1. The utility model provides a shutoff ware in modularization reducing pipeline which characterized in that includes:

the sealing barrel (1) is made of rubber materials with deformability, and the sealing barrel (1) is of a cylindrical barrel-shaped structure with one open end;

the pressing mechanism (2) is a series structure formed by connecting at least two reducing modules (4) together through universal joints (3), and the pressing mechanism (2) is installed inside the sealing barrel (1).

2. The modular reducer pipe inner stopper according to claim 1, wherein the reducer module (4) comprises:

the reducing driving mechanism (6) can radially stretch and reduce the diameter;

and the diameter-changing coordination ring (5) is arranged on the radial outer side of the diameter-changing driving mechanism (6).

3. The modular reducer pipe inner plugging device according to claim 2, wherein the reducer driving mechanism (6) comprises:

the arc-shaped barrel wall (10) is of an arc-shaped shell structure with a quarter of a circular surface and made of spring steel, symmetrical semi-cylindrical surface linear sliding grooves which form an angle of 20-70 degrees with the axis of a cylindrical surface are designed at two ends of the arc-shaped barrel wall (10), the four arc-shaped barrel walls (10) are distributed in a circumferential array mode, and annular grooves for installing variable-diameter coordination rings (5) are designed on the outer sides of the four arc-shaped barrel walls (10); two adjacent semi-cylindrical linear sliding grooves on the inner side of a cylindrical surface joint formed by four arc-shaped barrel walls (10) form trapezoidal sliding ways for mounting trapezoidal sliding blocks (11) on two sides respectively;

the oil cylinder (13), the said oil cylinder (13) is formed by cylinder block, hydraulic stem cooperation, the outer wall of cylinder block and outer wall of hydraulic stem are all mounted flanges, the said both ends of oil cylinder (13) connect the said universal joint (3);

the number of the U-shaped connecting rods (12) is 8, the radial inner ends of four U-shaped connecting rods are hinged with a flange on the cylinder body, and the radial inner ends of the other four U-shaped connecting rods are hinged with a flange on the hydraulic rod;

trapezoidal slider (11), trapezoidal slider (11) include four groups, all slide in trapezoidal slide, and each trapezoidal slider of group all includes preceding slider and back slider, and wherein preceding slider is articulated with the radial outer end of the U-shaped connecting rod on the cylinder body flange, and wherein the radial outer end of the U-shaped connecting rod on back slider and the hydraulic stem flange is articulated.

4. The modular reducer pipe inner stopper according to claim 2 or 3, characterized in that the reducer coordination ring (5) comprises:

the rubber packing ring (7) is of a cylindrical annular structure, and an annular groove is formed in the inner surface of the rubber packing ring (7) and is arranged on the outer side of the spiral steel ring (8);

the spiral steel ring (8), the said spiral steel ring (8) is the complete cylindrical surface structure welded by a plurality of spiral spring plates (14) and little spring plate (15), the little spring plate (15) is distributed in the interval of the spiral spring plate (14); the spiral steel ring (8) is arranged on the radial outer side of the arc-shaped barrel wall (10) of the reducing driving mechanism (6).

5. The modular reducer pipe inner stopper according to claim 4, wherein the reducer coordination ring (5) further comprises:

the strip-shaped steel bars (9) are filled in an annular cavity formed by the spiral steel ring (8) and the rubber wrapping ring (7).

6. The modular reducer pipe inner plugging device according to claim 4 or 5, wherein the outer wall of the rubber packing ring (7) and the inner wall of the sealing barrel (1) are tightly attached to each other.

7. The modular reducer pipe inner plugging device according to claim 4 or 5, wherein the arc-shaped barrel wall (10) is provided with a radial square hole.

8. The modular inner diameter-variable pipeline plugging device according to claim 1, 2 or 3, wherein the tail universal joint (3) of the plugging device is provided with a thread pair for connecting with a pipeline robot or a mechanical arm.

9. A reducing drive mechanism, comprising:

the arc-shaped barrel wall (10) is of an arc-shaped shell structure with a quarter of a circular surface and made of spring steel, symmetrical semi-cylindrical surface linear sliding grooves which form an angle of 20-70 degrees with the axis of a cylindrical surface are designed at two ends of the arc-shaped barrel wall (10), the four arc-shaped barrel walls (10) are distributed in a circumferential array mode, and annular grooves for installing variable-diameter coordination rings (5) are designed on the outer sides of the four arc-shaped barrel walls (10); two adjacent semi-cylindrical linear sliding grooves on the inner side of a cylindrical surface joint formed by four arc-shaped barrel walls (10) form trapezoidal sliding ways for mounting trapezoidal sliding blocks (11) on two sides respectively; the arc-shaped barrel wall (10) is provided with a radial square hole;

the oil cylinder (13), the said oil cylinder (13) is formed by cylinder block, hydraulic stem cooperation, the outer wall of cylinder block and outer wall of hydraulic stem are all mounted flanges, the said both ends of oil cylinder (13) connect the said universal joint (3);

the number of the U-shaped connecting rods (12) is 8, the radial inner ends of four U-shaped connecting rods are hinged with a flange on the cylinder body, and the radial inner ends of the other four U-shaped connecting rods are hinged with a flange on the hydraulic rod;

trapezoidal slider (11), trapezoidal slider (11) include four groups, all slide in trapezoidal slide, and each trapezoidal slider of group all includes preceding slider and back slider, and wherein preceding slider is articulated with the radial outer end of the U-shaped connecting rod on the cylinder body flange, and wherein the radial outer end of the U-shaped connecting rod on back slider and the hydraulic stem flange is articulated.

10. A variable diameter unison ring, comprising:

the rubber packing ring (7) is of a cylindrical annular structure, and an annular groove is formed in the inner surface of the rubber packing ring (7) and is arranged on the outer side of the spiral steel ring (8);

the spiral steel ring (8), the said spiral steel ring (8) is the complete cylindrical surface structure welded by a plurality of spiral spring plates (14) and little spring plate (15), the little spring plate (15) is distributed in the interval of the spiral spring plate (14); the spiral steel ring (8) is arranged on the radial outer side of the arc-shaped barrel wall (10) of the reducing driving mechanism (6);

the strip-shaped steel bars (9) are filled in an annular cavity formed by the spiral steel ring (8) and the rubber wrapping ring (7).

Background

At present, infrastructure of the domestic petroleum and natural gas industry is basically perfect, corresponding oil and gas pipelines are also in service for years, the problems of corrosion, damage, potential cracks and the like inevitably occur in the pipelines along with the increase of service life, the technical problem of pipeline maintenance and sealing is natural, and a plurality of pipeline plugging devices are also generated at present. A common method for repairing a pipe after it has been broken is to interrupt the fluid delivery and then perform the repair operation on the pipe. However, most of the existing plugging technologies adopt inflation or plugging operation by using deformation of a simple rubber material, and the plugging operation is difficult to be implemented for a pipeline with a large caliber and high pressure. And the radial telescopic range of the existing plugging equipment is limited, so that the requirement on the radius of the inner plugging device in the pipeline plugging operation is very strict, and if the damaged part occurs at the bent part of the pipeline or a reducer pipe exists in the pipeline, the existing inner plugging device can not complete the plugging task.

The search results are as follows:

patent retrieval: the retrieval keywords of 'pipeline', 'plugging device' and 'reducing' are used for retrieving the patent 2 in the patent retrieval of the national intellectual property office. 2 items which are different from the patent in essence can be separated from the using mode and the structure principle, and the items comprise (1) a device for temporarily blocking the leakage of the compensator with the publication number of CN 104712876A; (2) an occluder of publication No. CN 105805486A.

The device for temporarily blocking the leakage of the compensator with the publication number CN104712876A comprises: the shell is used for being sealed on the outer wall of the compensator when a leakage point occurs to the compensator and comprises an upper shell and a lower shell which are symmetrically arranged, and annular bulges protruding outwards are arranged on the outer walls of the upper shell and the lower shell; the fastening bolt penetrates through the upper shell and the lower shell through a pin hole and is used for fixedly connecting the upper shell and the lower shell; an intertube packing layer is arranged between the inner wall of the shell and the outer diameter of the pipeline, an intertube packing layer is arranged between the upper shell and the lower shell, and the packing layer is made of flexible substances such as rubber pads. Simple structure, convenient operation can in time the leak source on the shutoff compensator and the shutoff process need not the shut down to reduce the repair time.

An occluder of publication No. CN105805486A, comprising: a columnar body; an anchoring device, comprising: the anchoring slip and the wedge block push the anchoring slip to radially expand, and the wedge block is assembled on the main body in a sliding mode; the sealing device comprises a rubber barrel extrusion ring which is arranged on the main body in a sliding manner, and a sealing rubber barrel which is arranged on the rubber barrel extrusion ring; one end of the telescopic device pushes the wedge-shaped push block, the other end of the telescopic device pushes the sealing rubber barrel to deform radially, and when the telescopic device extends out, the wedge-shaped push block and the rubber barrel extrusion ring are pushed to slide. In the technical scheme, when the telescopic device extends out, the anchoring device is controlled to anchor, the plugging device is positioned at a required position, and the sealing device is driven to seal, so that the pipeline is sealed. By adopting the plugging device, the anchoring device and the sealing device are driven by the same telescopic device, so that the structure of the plugging device is simplified. And when the structure is adopted, the anchoring and sealing of the occluder can be completed only by sending a control signal.

A pipeline leakage self-adaptive series plugging and repairing device based on spiral driving crawling with the publication number of 105782633B belongs to the field of pipeline engineering; the technical problem to be solved is to provide a pipeline leakage self-adaptive series connection plugging and repairing device based on spiral driving crawling, self-adaptive driving in a pipeline of the plugging device is achieved by adopting a spiral driving mechanism, the pipeline can smoothly pass through an elbow or a reducing pipeline part, and an air bag is used as a plugging unit to perform self-adaptive plugging and repairing on a special reducing pipeline; the technical scheme for solving the technical problem is as follows: pipeline leakage self-adaptation series connection shutoff prosthetic devices based on spiral drive crawls, including spiral actuating mechanism and shutoff unit, spiral actuating mechanism includes rotary mechanism and guiding mechanism, and rotary mechanism realizes rotatoryly through the motor, and the drive wheel is the angle setting with the pipeline axial and makes rotary mechanism radial movement, and guiding mechanism moves through rotary mechanism's radial movement, and the shutoff unit moves in the pipeline through spiral actuating mechanism's removal.

The variable-diameter half joint disclosed in the publication No. 105972354B comprises two semi-annular shells, wherein the two semi-annular shells are clamped to form a tubular shell, and the diameter of one end of the tubular shell is larger than that of the other end of the tubular shell, so that the tubular shell can be clamped at the joint of two different-diameter pipelines; sealing gaskets are arranged at the joint of the two semi-annular shells and between the pipe orifices at the two ends of the tubular shell and the outer wall of the pipeline; the semi-annular shell is of a groove-shaped structure, when the two semi-annular shells are clamped, two ends of the tubular shell are in a closed-up shape, and the middle section of the tubular shell is arched outwards along the radial direction of the pipeline; two arc-shaped strip grooves are arranged on the inner sides of the arc-shaped edges at the two ends of the semi-annular shell; two arched strip grooves are arranged on the arched edges at the two sides of the semi-annular shell; the two arc-shaped grooves are communicated with each other in sequence to form a closed annular groove for accommodating the sealing gasket; the arched edges at two sides of the semi-annular shell are provided with flange edges which protrude outwards, and the two semi-annular shells are connected through bolts by utilizing bolt mounting holes arranged on the flange edges; the arched strip groove is arranged on the end surface of the flange edge; the sealing gasket comprises two arc-shaped sealing strips, wherein the radius of one arc-shaped sealing strip is larger than that of the other arc-shaped sealing strip; two ends of the two arc-shaped sealing strips are connected through the two arc-shaped sealing strips respectively to form a closed-loop sealing ring; a plurality of convex parts are distributed on two sides of the arc-shaped sealing strip and two sides of the arc-shaped sealing strip, and the convex parts are in interference fit with the side walls of the arc-shaped strip groove and the arc-shaped strip groove to enable the sealing gasket to be expanded and fixed; the convex parts are semi-cylindrical, and the length direction of each convex part is arranged along the direction when the sealing gasket enters and exits the ring groove; two ends of the arc-shaped sealing strip are respectively provided with a wedge-shaped lug, and the edge of the inner side of the lug is higher than the edge of the outer side of the lug; a plurality of arc-shaped convex ridges are arranged on the inner ring surface of the arc-shaped sealing strip; the positioning convex block is arranged on the arched sealing strip and convexly extends towards the bottom of the arched strip groove, and the bottom of the arched strip groove is provided with a positioning groove matched with the positioning convex block. The diameters of the two ends of the half joint are designed independently aiming at the diameter change of the pipeline to form the variable diameter type half joint, and the variable diameter type half joint can be used for plugging the variable diameter pipeline to adapt to the actual working condition requirement.

Publication No. 110260090a discloses a novel pipe leakage stopper, includes: the device comprises a spiral driving robot (1), a plugging and repairing unit (2) and a universal connector (3), wherein the spiral driving robot (1) and the plugging and repairing unit (2) are connected through the universal connector (3), the front end of the plugging and repairing unit (2) is connected with a rear support system (13) on the spiral driving robot (1) through the universal connector (3), and the rear end of the plugging and repairing unit is fixed on an independent rear support system (13); the structure of the spiral driving robot (1) is as follows: the front driving system (11) is arranged on an output shaft of the outer rotor motor (12), and the rear supporting system (13) is arranged on a motor shell; the structure of the front driving system (11) is as follows: the driving wheel system (111) is fixed on the supporting and diameter-changing system (112) through bolts; wherein the driving wheel system (111) is structured as follows: an angle modulation steering engine (1111) is fixed on a steering engine connecting plate (1112) through a bolt, the steering engine connecting plate (1112) is connected on a rudder rack (1113) through a bolt, the rudder rack (1113) is connected on a hinge (1127) of a support and reducing system (112) through a bolt, an output shaft of the angle modulation steering engine (1111) is directly connected on a driving wheel carrier (1116), and a driving wheel (1114) is fixed on the wheel carrier (1116) through a wheel shaft (1115) and rotates along with the wheel carrier (1116); the supporting and diameter-changing system (112) is structurally characterized in that: the triangular fixing support (1129) is designed in a hollow shaft type, the triangular fixing support (1129) is installed on an output shaft of an outer rotor motor (12) through a connecting flange plate (1130), a pull rod (1122) is embedded in a hollow shaft of the triangular fixing support (1129), one end of the pull rod is connected with the outer rotor motor (12) through a spring (1131), the other end of the pull rod is fixed on a connecting plate (1121) through a bolt, the connecting plate (1121) is in a regular hexagon structure and is connected onto a short connecting rod (1124) through a hinge A (1123), the short connecting rod (1124) is connected onto a supporting aluminum frame A (1126) through a hinge B (1125), the supporting aluminum frame A (1126) and the supporting aluminum frame B are arranged in parallel, one ends of the supporting aluminum frame A (1126) and the supporting aluminum frame B (1128) are connected onto the triangular fixing support (1129) through bolts, and the other ends of the supporting aluminum frame A (1126) and the supporting aluminum frame B (1128) are connected onto a hinge (1127) through bolts; the structure of the outer rotor motor (12) is as follows: the motor consists of a motor main body (121) and a motor shell (122), the motor main body (121) is fixed on the connecting flange plate (1130) by using bolts, and the motor shell (122) is fixed at the tail of the motor by using bolts and is connected with the rear support system 13; the rear support system 13 has the following structure: the driven wheel system (131) is fixed on the support and variable diameter system (112) through a rudder frame (1113) by using bolts; wherein the driven wheel system (131) is configured to: the driven wheel (1311) is fixed on a wheel carrier (1116) through a wheel shaft (1115) to rotate, the wheel carrier (1116) is fixed on a rudder frame (1113) through bolts, and the rudder frame (1113) is connected on a hinge (1127) of the support and diameter-variable system (121) through bolts; the plugging and repairing unit (2) consists of a support frame (21), plugging air bags (22), repairing air bags (23) and a metal coating layer (24), wherein the two ends of the support frame (21) are coated with the plugging air bags (22), the inner sides of the plugging air bags (22) at the two ends of the support frame (21) are respectively coated with the repairing air bags (23), the metal coating layer (24) is coated between the two repairing air bags (23), two side surfaces of the support frame (21) are respectively provided with a support wheel for supporting the plugging and repairing unit (2) to move along the pipe wall, one side surface is provided with a plugging air inlet interface and a repairing air inlet interface, the plugging air inlet interface is communicated with a plugging air inlet pipeline inside the support frame (21), the plugging air inlet pipeline is communicated with the plugging air bags (22) inside the support frame (21), and the repairing air inlet interface is communicated with the repairing air inlet pipeline inside the support frame (21), the repairing air inlet pipeline is communicated with a repairing air bag (23) in the support frame (21), wherein the pipe diameter of the repairing air inlet pipeline communicated with the repairing air bag (23) is smaller than that of the plugging air inlet pipeline communicated with the plugging air bag (22). When a pipeline has a leakage accident, the leakage can be divided into three conditions of single-point leakage, short-distance multi-point section leakage and multi-point long-distance distributed section leakage according to the pipeline leakage condition. The spiral driving unit drags the plugging and repairing unit to a leakage area, and emergency treatment and disposal are carried out on the pipeline leakage by adopting plugging, isolating, repairing and replacing repairing according to the leakage condition.

And (4) conclusion: the patent is essentially different from the patent contents recorded in the prior national intellectual property office.

The technical scheme of the disclosed technology, the technical problems to be solved and the beneficial effects are all different from the technical scheme of the invention, or the technical field or the application occasion is different, and no technical inspiration exists in the technical scheme disclosed above.

Disclosure of Invention

The invention aims to provide a modular variable diameter pipeline inner plugging device, a driving mechanism and a coordination ring aiming at the defects in the prior art so as to improve the adaptability of a pipeline plugging system to the plugging work of an elbow part and a variable diameter pipe.

In order to achieve the purpose, the invention adopts the following technical scheme:

an inner stopper of a modular reducing pipeline, comprising:

the sealing barrel (1) is made of rubber materials with deformability, and the sealing barrel (1) is of a cylindrical barrel-shaped structure with one open end;

the pressing mechanism (2) is a series structure formed by connecting at least two reducing modules (4) together through universal joints (3), and the pressing mechanism (2) is installed inside the sealing barrel (1).

Further, the reducing module (4) comprises:

the reducing driving mechanism (6) can radially stretch and reduce the diameter;

and the diameter-changing coordination ring (5) is arranged on the radial outer side of the diameter-changing driving mechanism (6).

Further, the reducing drive mechanism (6) comprises:

the arc-shaped barrel wall (10) is of an arc-shaped shell structure with a quarter of a circular surface and made of spring steel, symmetrical semi-cylindrical surface linear sliding grooves which form an angle of 20-70 degrees with the axis of a cylindrical surface are designed at two ends of the arc-shaped barrel wall (10), the four arc-shaped barrel walls (10) are distributed in a circumferential array mode, and annular grooves for installing variable-diameter coordination rings (5) are designed on the outer sides of the four arc-shaped barrel walls (10); two adjacent semi-cylindrical linear sliding grooves on the inner side of a cylindrical surface joint formed by four arc-shaped barrel walls (10) form trapezoidal sliding ways for mounting trapezoidal sliding blocks (11) on two sides respectively;

the oil cylinder (13), the said oil cylinder (13) is formed by cylinder block, hydraulic stem cooperation, the outer wall of cylinder block and outer wall of hydraulic stem are all mounted flanges, the said both ends of oil cylinder (13) connect the said universal joint (3);

the number of the U-shaped connecting rods (12) is 8, the radial inner ends of four U-shaped connecting rods are hinged with a flange on the cylinder body, and the radial inner ends of the other four U-shaped connecting rods are hinged with a flange on the hydraulic rod;

trapezoidal slider (11), trapezoidal slider (11) include four groups, all slide in trapezoidal slide, and each trapezoidal slider of group all includes preceding slider and back slider, and wherein preceding slider is articulated with the radial outer end of the U-shaped connecting rod on the cylinder body flange, and wherein the radial outer end of the U-shaped connecting rod on back slider and the hydraulic stem flange is articulated.

Further, the reducing coordination ring (5) comprises:

the rubber packing ring (7) is of a cylindrical annular structure, and an annular groove is formed in the inner surface of the rubber packing ring (7) and is arranged on the outer side of the spiral steel ring (8);

the spiral steel ring (8), the said spiral steel ring (8) is the complete cylindrical surface structure welded by a plurality of spiral spring plates (14) and little spring plate (15), the little spring plate (15) is distributed in the interval of the spiral spring plate (14); the spiral steel ring (8) is arranged on the radial outer side of the arc-shaped barrel wall (10) of the reducing driving mechanism (6).

Further, the reducing coordination ring (5) further comprises:

the strip-shaped steel bars (9) are filled in an annular cavity formed by the spiral steel ring (8) and the rubber wrapping ring (7).

Furthermore, the outer wall of the rubber packing ring (7) is tightly attached to the inner wall of the sealing barrel (1).

Furthermore, the arc-shaped barrel wall (10) is provided with a radial square hole.

Furthermore, the tail universal joint (3) of the plugging device is provided with a thread pair for connecting with a pipeline robot or a mechanical arm.

In order to achieve the purpose, the invention adopts the following technical scheme:

a variable diameter drive mechanism comprising:

the arc-shaped barrel wall (10) is of an arc-shaped shell structure with a quarter of a circular surface and made of spring steel, symmetrical semi-cylindrical surface linear sliding grooves which form an angle of 20-70 degrees with the axis of a cylindrical surface are designed at two ends of the arc-shaped barrel wall (10), the four arc-shaped barrel walls (10) are distributed in a circumferential array mode, and annular grooves for installing variable-diameter coordination rings (5) are designed on the outer sides of the four arc-shaped barrel walls (10); two adjacent semi-cylindrical linear sliding grooves on the inner side of a cylindrical surface joint formed by four arc-shaped barrel walls (10) form trapezoidal sliding ways for mounting trapezoidal sliding blocks (11) on two sides respectively; the arc-shaped barrel wall (10) is provided with a radial square hole;

the oil cylinder (13), the said oil cylinder (13) is formed by cylinder block, hydraulic stem cooperation, the outer wall of cylinder block and outer wall of hydraulic stem are all mounted flanges, the said both ends of oil cylinder (13) connect the said universal joint (3);

the number of the U-shaped connecting rods (12) is 8, the radial inner ends of four U-shaped connecting rods are hinged with a flange on the cylinder body, and the radial inner ends of the other four U-shaped connecting rods are hinged with a flange on the hydraulic rod;

trapezoidal slider (11), trapezoidal slider (11) include four groups, all slide in trapezoidal slide, and each trapezoidal slider of group all includes preceding slider and back slider, and wherein preceding slider is articulated with the radial outer end of the U-shaped connecting rod on the cylinder body flange, and wherein the radial outer end of the U-shaped connecting rod on back slider and the hydraulic stem flange is articulated.

In order to achieve the purpose, the invention adopts the following technical scheme:

a variable diameter unison ring, comprising:

the rubber packing ring (7) is of a cylindrical annular structure, and an annular groove is formed in the inner surface of the rubber packing ring (7) and is arranged on the outer side of the spiral steel ring (8);

the spiral steel ring (8), the said spiral steel ring (8) is the complete cylindrical surface structure welded by a plurality of spiral spring plates (14) and little spring plate (15), the little spring plate (15) is distributed in the interval of the spiral spring plate (14); the spiral steel ring (8) is arranged on the radial outer side of the arc-shaped barrel wall (10) of the reducing driving mechanism (6);

the strip-shaped steel bars (9) are filled in an annular cavity formed by the spiral steel ring (8) and the rubber wrapping ring (7).

Compared with the prior art, the invention has the following beneficial effects:

1. the plugging system adopts a hydraulic system to provide power, and a complex gas supply system is not needed;

2. the reducing driving mechanism main body adopts a plugging mode of combining spring steel and a sealing flexible material, has good structural strength and has higher plugging pressure than a common plugging device;

3. the reducing driving mechanism adopts a composite deformation mode of spiral steel ring deformation and strip steel bar rolling, new distribution can be formed according to the geometric form in the pipe, certain adaptability is provided for the inner wall of a fault pipeline, the distribution of load is improved, the pressure resistance of the whole structure is improved, and the working pressure of the plugging device is further improved;

4. the invention adopts a modularized design method, and the number of the variable diameter modules 4 can be selected according to the pipeline plugging pressure to form the plugging device corresponding to different pressure operations;

5. the variable-diameter modules are connected by universal joints, and the deformable serial snake-shaped structure has good trafficability and plugging adaptability to the bent pipe.

Drawings

FIG. 1 is a schematic diagram of the overall structure layout of a stopper in a modular reducing pipeline according to the invention;

FIG. 2 is a half-sectional isometric view of FIG. 1;

FIG. 3 is a schematic view of the structural layout of the pressing mechanism of the present invention;

FIG. 4 is an isometric view of FIG. 3;

FIG. 5 is a partial schematic view of a diameter-variable module according to the present invention;

FIG. 6 is a schematic view of a partial cross-section of a diameter-variable module according to the present invention;

FIG. 7 is a schematic structural layout of a diameter-varying coordination ring according to the present invention;

FIG. 8 is a schematic view of the spiral steel ring structure of the present invention;

FIG. 9 is an enlarged view of a portion of FIG. 8 at A;

FIG. 10 is a schematic perspective view of the variable diameter driving mechanism of the present invention;

FIG. 11 is a schematic front view of the variable diameter driving mechanism of the present invention;

FIG. 12 is a partial schematic view of the edge driving principle of the reducing driving mechanism according to the present invention;

FIG. 13 is a schematic view of the center driving principle of the reducing driving mechanism of the present invention;

FIG. 14 is a schematic view of the cylinder structure of the present invention.

In the figure: the device comprises a sealing barrel 1, a pressing mechanism 2, a universal joint 3, a reducing module 4, a reducing coordination ring 5, a reducing driving mechanism 6, a rubber packing ring 7, a spiral steel ring 8, a strip-shaped steel bar 9, an arc barrel wall 10, a trapezoidal sliding block 11, a U-shaped connecting rod 12, an oil cylinder 13, a spiral spring plate 14 and a small spring plate 15.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1:

referring to fig. 1 to 14, the present invention provides a technical solution:

as shown in fig. 1 and 2, which are schematic diagrams of the overall structural layout of the invention, the modular reducer pipeline inner plugging device of the invention mainly comprises a sealing barrel 1 and a pressing mechanism 2; the sealing barrel 1 is made of rubber materials with deformability, and is of a cylindrical barrel-shaped structure with one open end;

as shown in fig. 2 and 3, which are schematic structural layout diagrams of the compressing mechanism of the present invention, the compressing mechanism 2 is a deformable series structure formed by connecting a plurality of reducing modules 4 together through universal joints 3, and is installed inside the sealing barrel 1, and during plugging operation, the sealing barrel 1 can be compressed on the inner wall of the pipeline through each reducing module 4 to complete the sealing operation;

as shown in fig. 5 and 6, a first schematic diagram and a second schematic diagram of a partial structure of the diameter-variable module of the present invention are shown; the reducing module 4 consists of a reducing driving mechanism 6 and a reducing coordination ring 5; the reducing driving mechanism 6 consists of an arc-shaped barrel wall 10, a trapezoidal sliding block 11, a U-shaped connecting rod 12 and an oil cylinder 13; the main structure of the arc-shaped barrel walls 10 is an arc-shaped shell structure with a quarter of a circular surface and made of spring steel, a square hole is designed in the middle of the arc-shaped barrel walls for enhancing the coordination and deformation capacity of the arc-shaped barrel walls, symmetrical semi-cylindrical surface linear sliding grooves which form 20-70 degrees with the axis of a cylindrical surface are designed at two ends of the arc-shaped barrel walls, an approximate complete cylindrical surface can be formed by one-time circumferential array of the four arc-shaped barrel walls 10, and an annular groove is designed at the outer side of the complete cylindrical surface for installing a variable-diameter coordination ring 5; linear sliding grooves are respectively arranged on two adjacent semi-cylindrical surfaces at the inner sides of all joints of an approximate complete cylindrical surface formed by one-time circumferential array of the four arc-shaped barrel walls 10, and trapezoidal sliding ways for mounting trapezoidal sliding blocks 11 are respectively formed on two sides of each of the two adjacent linear sliding grooves; a cylindrical surface hinge interface is designed on the trapezoidal sliding block 11 and is connected with flanges at two ends of the oil cylinder 13 through cylindrical hinges at two ends of the U-shaped connecting rod 12; the oil cylinder 13 synchronously drives the four trapezoidal sliding blocks 11 at two ends to move along the axis direction of the cylindrical surface through the eight U-shaped connecting rods 12, and the trapezoidal sliding blocks 11 slide in the trapezoidal slide ways to generate thrust on the arc-shaped barrel walls 10 at two sides of the gap so as to increase the circumference of the cylindrical surface and achieve the purpose of increasing the radius. Since the gap between the arc-shaped barrel walls 10 is continuously increased during the increase of the radius, the phenomenon of local insufficient sealing pressure occurs during the plugging process. In order to prevent the influence of the increased gap on the plugging effect, a reducing coordination ring 5 is installed outside the reducing drive mechanism 6.

As shown in fig. 7, 8 and 9, the layout of the diameter-variable coordination ring structure of the present invention is schematically illustrated; the diameter-variable coordination ring 5 consists of a rubber wrapping ring 7, a spiral steel ring 8 and a strip-shaped steel bar 9; fig. 6 is a schematic structural diagram of the spiral steel ring of the present invention, the spiral steel ring 8 is a completed cylindrical surface formed by welding a plurality of spiral spring plates 14 and small spring plates 15, the small spring plates 15 are distributed in the gaps of the spiral spring plates 14, and the small spring plates coordinate with each other to deform, so that the diameter-variable coordination ring 5 can elastically deform with a small force; the rubber packing ring 7 and the structure are cylindrical annular structures, and the inner part of the rubber packing ring is provided with an annular groove which is arranged on the outer side of the reducing coordination ring 5; a plurality of strip-shaped steel rods 9 are filled in an annular cavity formed by the diameter-changing coordination ring 5 and the rubber packing ring 7, the distribution of load is improved by utilizing the mutual rolling of the strip-shaped steel rods 9 in the diameter-changing process, and meanwhile, the pressure resistance of the whole structure is improved, so that the working pressure of the plugging device is improved.

As shown in fig. 10 and 11, a first schematic diagram and a second schematic diagram of the reducing driving mechanism of the invention are shown; the reducing driving mechanism 6 consists of an arc barrel wall 10, a trapezoidal sliding block 11, a U-shaped connecting rod 12 and an oil cylinder 13; the main structure of the arc-shaped barrel walls 10 is an arc-shaped shell structure with a quarter of circular surfaces made of spring steel, a square hole is designed in the middle for enhancing the coordination and deformation capacity of the arc-shaped barrel walls, symmetrical semi-cylindrical surface linear sliding grooves forming a certain angle with the axis of a cylindrical surface are designed at two ends of the arc-shaped barrel walls, an approximate complete cylindrical surface can be formed by one-time circumferential array of the four arc-shaped barrel walls 10, and an annular groove is designed on the outer side of the complete cylindrical surface for installing a diameter-variable coordination ring; two adjacent semi-cylindrical linear sliding grooves at the inner side of an approximate complete cylindrical surface joint can be formed on four arc-shaped barrel walls 10 in a one-time circumferential array, and trapezoidal sliding ways for mounting trapezoidal sliding blocks 11 are respectively formed at two sides of each linear sliding groove;

FIG. 12 is a partial schematic view of the edge driving principle of the reducing mechanism according to the present invention; the upper design of the trapezoidal sliding block 11 is connected with flanges at two ends of an oil cylinder 13 through cylindrical hinges at two ends of a U-shaped connecting rod 12 by cylindrical surface hinge interfaces;

as shown in fig. 13 and 14, which are schematic diagrams illustrating the center driving principle of the reducing mechanism of the present invention, the oil cylinder 13 synchronously drives the four trapezoidal sliding blocks 11 at two ends to move along the axis direction of the cylindrical surface through eight U-shaped connecting rods 12, and the trapezoidal sliding blocks 11 slide in the trapezoidal sliding ways to generate thrust on the arc-shaped bucket walls 10 at two sides of the gap, so that the circumference of the cylindrical surface is increased, and the purpose of increasing the radius is achieved. Since the gap between the arc-shaped barrel walls 10 is continuously increased during the increase of the radius, the phenomenon of local insufficient sealing pressure occurs during the plugging process. In order to prevent the influence of the increased gap on the plugging effect, a reducing coordination ring 5 is installed outside the reducing drive mechanism 6.

It is desirable to block the fluid in the pipeline when the pipeline is to be repaired after a failure or rupture. At the moment, a certain number of reducing modules 4 are connected by universal joints 3 according to the pressure in the pipeline to form a series structure, and the reducing modules are assembled in a sealed barrel to form a plugging device corresponding to the plugging pressure in the pipeline. The tail universal joint 3 of the plugging device is reserved with a thread for being connected with a pipeline robot or a mechanical arm, and the mechanical arm or a pipeline robot carrying platform is adopted to convey the plugging device to an appointed plugging position in the pipeline.

After the specified plugging position is reached, starting the oil cylinders 13 in the variable diameter modules 4 in sequence, enabling the oil cylinders to move back and forth in a telescopic mode, enabling the oil cylinders 13 to synchronously drive the four trapezoidal sliding blocks 11 at two ends to move along the axis direction of the cylindrical surface through the eight U-shaped connecting rods 12, enabling the trapezoidal sliding blocks 11 to slide in the trapezoidal slide ways to generate thrust on the arc-shaped barrel walls 10 at two sides of the gap, and enabling the circumference of the cylindrical surface to be increased and the radius of the cylindrical surface to be increased; with the increase of the radius of the reducing driving mechanism 6, the reducing coordination ring 5 is pushed to increase, the sealing barrel is tightly pressed on the inner wall of the pipeline to form an annular sealing strip, a plurality of annular sealing strips are formed in the area where the reducing modules 4 are located, finally, a gradient sealing structure is formed in the pipeline, and the plugging process is completed.

In the process of increasing the radius of the dynamic diameter-changing coordinating ring 5, the spiral spring plate 14 of the spiral steel ring 8 at the inner side plays a supporting role in the gap between the arc-shaped barrel walls 10 in the deformation process, and the adverse effect of the gap is avoided; the annular cavity formed by the variable diameter coordination ring 5 and the rubber packing ring 7 is filled with a plurality of strip steel bars 9, a series of strip steel bars 9 roll with each other in the process of increasing the radius of the spiral steel ring 8, new distribution is formed according to the geometric shape in the pipe, and certain adaptability to the geometric shape in the pipe is achieved in the process of making up the gap of the spiral spring plate 14 in the spiral steel ring 8, so that the distribution of load is improved, the pressure resistance of the whole structure is improved, and the working pressure of the plugging device is further improved.

Example 2:

referring to fig. 1 to 14, the present invention provides a technical solution:

as shown in fig. 1 and 2, which are schematic diagrams of the overall structural layout of the invention, the modular reducer pipeline inner plugging device of the invention mainly comprises a sealing barrel 1 and a pressing mechanism 2; the sealing barrel 1 is made of rubber materials with deformability, and is of a cylindrical barrel-shaped structure with one open end;

as shown in fig. 2 and 3, which are schematic structural layout diagrams of the compressing mechanism of the present invention, the compressing mechanism 2 is a deformable series structure formed by connecting a plurality of reducing modules 4 together through universal joints 3, and is installed inside the sealing barrel 1, and during plugging operation, the sealing barrel 1 can be compressed on the inner wall of the pipeline through each reducing module 4 to complete the sealing operation;

as shown in fig. 5 and 6, a first schematic diagram and a second schematic diagram of a partial structure of the diameter-variable module of the present invention are shown; the reducing module 4 consists of a reducing driving mechanism 6 and a reducing coordination ring 5; the reducing driving mechanism 6 consists of an arc-shaped barrel wall 10, a trapezoidal sliding block 11, a U-shaped connecting rod 12 and an oil cylinder 13; the main structure of the arc barrel walls 10 is an arc shell structure with a quarter of a circular surface made of spring steel, symmetrical semi-cylindrical surface linear sliding grooves which form an angle of 20-70 degrees with the axis of the cylindrical surface are designed at two ends, an approximate complete cylindrical surface can be formed by one-time circumferential array of the four arc barrel walls 10, and an annular groove for installing a reducing coordination ring 5 is designed at the outer side of the complete cylindrical surface; linear sliding grooves are respectively arranged on two adjacent semi-cylindrical surfaces at the inner sides of all joints of an approximate complete cylindrical surface formed by one-time circumferential array of the four arc-shaped barrel walls 10, and trapezoidal sliding ways for mounting trapezoidal sliding blocks 11 are respectively formed on two sides of each of the two adjacent linear sliding grooves; a cylindrical surface hinge interface is designed on the trapezoidal sliding block 11 and is connected with flanges at two ends of the oil cylinder 13 through cylindrical hinges at two ends of the U-shaped connecting rod 12; the oil cylinder 13 synchronously drives the four trapezoidal sliding blocks 11 at two ends to move along the axis direction of the cylindrical surface through the eight U-shaped connecting rods 12, and the trapezoidal sliding blocks 11 slide in the trapezoidal slide ways to generate thrust on the arc-shaped barrel walls 10 at two sides of the gap so as to increase the circumference of the cylindrical surface and achieve the purpose of increasing the radius. Since the gap between the arc-shaped barrel walls 10 is continuously increased during the increase of the radius, the phenomenon of local insufficient sealing pressure occurs during the plugging process. In order to prevent the influence of the increased gap on the plugging effect, a reducing coordination ring 5 is installed outside the reducing drive mechanism 6.

As shown in fig. 10 and 11, a first schematic diagram and a second schematic diagram of the reducing driving mechanism of the invention are shown; the reducing driving mechanism 6 consists of an arc barrel wall 10, a trapezoidal sliding block 11, a U-shaped connecting rod 12 and an oil cylinder 13; the main structure of the arc-shaped barrel walls 10 is an arc-shaped shell structure with a quarter of circular surfaces made of spring steel, a square hole is designed in the middle for enhancing the coordination and deformation capacity of the arc-shaped barrel walls, symmetrical semi-cylindrical surface linear sliding grooves forming a certain angle with the axis of a cylindrical surface are designed at two ends of the arc-shaped barrel walls, an approximate complete cylindrical surface can be formed by one-time circumferential array of the four arc-shaped barrel walls 10, and an annular groove is designed on the outer side of the complete cylindrical surface for installing a diameter-variable coordination ring 5; two adjacent semi-cylindrical linear sliding grooves at the inner side of an approximate complete cylindrical surface joint can be formed on four arc-shaped barrel walls 10 in a one-time circumferential array, and trapezoidal sliding ways for mounting trapezoidal sliding blocks 11 are respectively formed at two sides of each linear sliding groove;

FIG. 12 is a partial schematic view of the edge driving principle of the reducing mechanism according to the present invention; the upper design of the trapezoidal sliding block 11 is connected with a flange of an oil cylinder 13 through cylindrical hinges at two ends of a U-shaped connecting rod 12 by a cylindrical surface hinge interface;

as shown in fig. 13 and 14, which are schematic diagrams illustrating the center driving principle of the reducing mechanism of the present invention, the oil cylinder 13 synchronously drives the four trapezoidal sliding blocks 11 at two ends to move along the axis direction of the cylindrical surface through eight U-shaped connecting rods 12, and the trapezoidal sliding blocks 11 slide in the trapezoidal sliding ways to generate thrust on the arc-shaped bucket walls 10 at two sides of the gap, so that the circumference of the cylindrical surface is increased, and the purpose of increasing the radius is achieved. Since the gap between the arc-shaped barrel walls 10 is continuously increased during the increase of the radius, the phenomenon of local insufficient sealing pressure occurs during the plugging process. In order to prevent the influence of the increased gap on the plugging effect, a reducing coordination ring 5 is installed outside the reducing drive mechanism 6.

Although all of the above embodiments use one drawing, it will be apparent to those skilled in the art that no separate drawing is shown, as long as the parts or structural features missing from the embodiments are removed from the drawings. As will be clear to the skilled person. Of course, the embodiments with more components are only the best embodiments, and the embodiments with less components are the basic embodiments, but the basic objects of the invention can also be achieved, so all of them are within the protection scope of the invention.

All parts and parts which are not discussed in the present application and the connection mode of all parts and parts in the present application belong to the known technology in the technical field, and are not described again. Such as welding, threaded connections, etc.

In the present invention, the term "plurality" means two or more unless explicitly defined otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or unit must have a specific direction, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.