1. Inner core protective structure of natural gas well intelligence flow regulator, its characterized in that includes:

the valve comprises a valve body, a valve body and a valve body, wherein a working cavity extending along a preset axis is formed in the valve body, an inlet and an outlet are further formed in the valve body, the inlet is communicated with the working cavity and the outside along the radial direction, the outlet is communicated with one end of the working cavity, and a driving device mounting hole communicated with the other end of the working cavity is further formed in the valve body;

the valve seat is fixed in the outlet, and a fluid channel for communicating the working cavity with the outside is formed in the valve seat;

the driving device is fixedly connected with the driving device mounting hole;

the valve core device is arranged in the working cavity and is connected with the driving device; and

the protecting sleeve can rotate around the preset axis and is arranged in the working cavity, and the valve core device is positioned in the protecting sleeve;

the length of the protective sleeve is smaller than the shortest distance between the valve seat and the driving device, a gap is reserved between the outer peripheral surface of the protective sleeve and the inner peripheral surface of the working cavity, and a fluid through hole is formed in the protective sleeve; the driving device is configured to drive the valve core device to reciprocate between a valve closing position matched with the valve seat and a valve opening position far away from the valve seat; when the valve core device is located at the valve opening position, the fluid is communicated with the fluid channel through the hole.

2. The inner core protection structure of the intelligent natural gas well flow regulator according to claim 1, characterized in that:

the protective sleeve is further provided with a long-strip-shaped flow adjusting hole, and the flow adjusting hole extends along the direction from the valve seat to the driving device.

3. The inner core protection structure of the intelligent natural gas well flow regulator according to claim 2, wherein:

the flow regulating hole is parallel to the preset axis.

4. The inner core protection structure of the intelligent natural gas well flow regulator according to claim 2, wherein:

the flow regulating orifice is closer to the valve seat than the fluid passing orifice.

5. The inner core protection structure of the intelligent natural gas well flow regulator according to claim 1, characterized in that:

the outer peripheral face of the protection sleeve is provided with a plurality of arc-shaped flow guide protrusions, and the flow guide protrusions are evenly distributed around the axis of the protection sleeve.

6. The inner core protection structure of the intelligent natural gas well flow regulator according to claim 1, characterized in that:

the number of fluid passing holes is an even number, and the fluid passing holes are uniformly arranged around the axis of the shield.

7. The inner core protection structure of the intelligent natural gas well flow regulator according to claim 1, characterized in that:

the length of the protective sleeve is 1-5mm smaller than the shortest distance between the valve seat and the driving device.

8. The inner core protection structure of the intelligent natural gas well flow regulator according to claim 1, characterized in that:

the protecting sleeve sequentially comprises a small-diameter section and a large-diameter section along the direction from the valve seat to the driving device; the valve seat is provided with a containing hole, and one end of the small-diameter section, which is far away from the large-diameter section, is rotatably inserted into the containing hole.

Background

In order to provide fine control over the production conditions of gas wells, more and more production outlets of gas wells are equipped with flow regulators. The flow regulator mainly comprises a valve seat and a valve core device. The poppet device is a moving part for cooperating with the valve seat to close the flow regulator or disengaging the valve seat to open the flow regulator. By adjusting the position between the valve cartridge and the flow regulator, the production flow rate of the gas well can be varied.

In the existing flow regulator, an inlet is communicated with a working cavity of the flow regulator and the outside along the radial direction. Fluid entering the flow regulator through the inlet can erode a specific position on the radial direction of the valve core device, and the valve core device is obviously damaged in a short time by the eroded position, so that the condition that the movement of the valve core device is limited or the valve core device cannot be effectively sealed occurs.

Disclosure of Invention

The embodiment of the application provides a natural gas well intelligence flow regulator's inner core protective structure, and it can effectively avoid the condition that specific position was eroded to take place on the case device.

In order to achieve the above purpose, the embodiments of the present application adopt the following technical solutions:

inner core protective structure of natural gas well intelligence flow regulator includes: the valve body is internally provided with a working cavity extending along a preset axis, the valve body is also provided with an inlet and an outlet, the inlet is communicated with the working cavity and the outside along the radial direction, the outlet is communicated with one end of the working cavity, and the valve body is also provided with a driving device mounting hole communicated with the other end of the working cavity; the valve seat is fixed in the outlet, and a fluid channel for communicating the working cavity with the outside is formed in the valve seat; the driving device is fixedly connected with the driving device mounting hole; the valve core device is arranged in the working cavity and is connected with the driving device; the protecting sleeve can rotate around a preset axis and is arranged in the working cavity, and the valve core device is positioned in the protecting sleeve; the length of the protective sleeve is smaller than the shortest distance between the valve seat and the driving device, a gap is reserved between the outer peripheral surface of the protective sleeve and the inner peripheral surface of the working cavity, and a fluid through hole is formed in the protective sleeve; the driving device is configured to drive the valve core device to reciprocate between a valve closing position matched with the valve seat and a valve opening position far away from the valve seat; when the spool arrangement is in the open valve position, fluid is communicated with the fluid passage through the orifice.

Furthermore, the protective sleeve is also provided with a strip-shaped flow adjusting hole, and the flow adjusting hole extends along the direction from the valve seat to the driving device.

Further, the flow regulating hole is parallel to the preset axis.

Further, the flow regulating orifice is closer to the valve seat than the fluid passing orifice.

Furthermore, the outer peripheral face of the protecting sleeve is provided with a plurality of arc-shaped flow guide protrusions which are uniformly arranged around the axis of the protecting sleeve.

Further, the number of fluid passing holes is an even number, and the fluid passing holes are uniformly arranged around the axis of the shield.

Furthermore, the length of the protective sleeve is 1-5mm smaller than the shortest distance between the valve seat and the driving device.

Further, the protecting sleeve sequentially comprises a small-diameter section and a large-diameter section along the direction from the valve seat to the driving device; the valve seat is provided with a containing hole, and the small-diameter section is far away from the large-diameter section and is rotatably inserted into the containing hole.

The technical scheme of the application has following advantage and beneficial effect at least:

the inner core protective structure of natural gas well intelligence flow regulator that this application embodiment provided, it possesses the lag, and the lag can be around the setting of presetting axis pivoted at the work intracavity. Fluid entering the working chamber radially through the inlet will cause the protective sleeve to rotate. When fluid enters the protective sleeve through the fluid through holes, the fluid can uniformly impact each position of the valve core device, so that concentrated impact of the fluid on a specific position on the valve core device is avoided, the problem that the valve core device is obviously damaged in a short time due to erosion of the valve core device is solved, and the situation that the movement of the valve core device is limited or the valve core device cannot be effectively sealed due to erosion damage of the specific position is avoided. The service life of the intelligent flow regulator of the natural gas well is greatly prolonged.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments are briefly described below. It is appreciated that the following drawings depict only certain embodiments of the application and are not to be considered limiting of its scope. From these figures, other figures can be derived by those skilled in the art without inventive effort.

Fig. 1 is a schematic cross-sectional structural diagram of an inner core protection structure of an intelligent flow regulator for a natural gas well provided in the present embodiment, wherein a valve core device is located at an open valve position;

fig. 2 is a schematic cross-sectional structural diagram of an inner core protection structure of an intelligent flow regulator for a natural gas well provided in the present embodiment, wherein a valve core device is located in an off valve position;

fig. 3 is a schematic perspective view of a protective sleeve in an inner core protective structure of an intelligent flow regulator for a natural gas well according to this embodiment.

In the figure: 010-inner core protection structure of intelligent flow regulator of natural gas well; 100-a valve body; 100 a-a preset axis; 110-a working chamber; 120-inlet; 130-an outlet; 140-drive mounting holes; 200-valve seat; 210-a fluid channel; 220-a receiving hole; 300-a drive device; 400-a cartridge device; 500-protective sleeve; 501-small diameter section; 502-large diameter section; 510-fluid passing through the aperture; 520-flow regulating holes; 530-flow guiding bulges.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be described in detail and completely with reference to the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all embodiments.

Thus, the following detailed description of the embodiments of the present application is not intended to limit the scope of the claimed application, but is merely representative of some embodiments of the application. 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 application.

It should be noted that, in the embodiments and the features and technical solutions in the embodiments of the present application may be combined with each other without conflict.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present application, it should be noted that the terms "upper", "lower", and the like refer to orientations or positional relationships based on those shown in the drawings, or orientations or positional relationships that are conventionally arranged when the product of the present invention is used, or orientations or positional relationships that are conventionally understood by those skilled in the art, and such terms are used for convenience of description and simplification of the description, and do not refer to or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present application.

In the description of the present application, "oil and gas well" may refer to both oil and gas wells. When the "oil and gas well" is a natural gas well, it may be a natural gas well for collecting conventional natural gas, or a natural gas well for collecting unconventional natural gas (shale gas, coal bed gas, etc.).

Example 1:

fig. 1 is a schematic cross-sectional view of an inner core protection structure 010 of an intelligent flow regulator for a natural gas well according to this embodiment, where a valve core device 400 is located in an open valve position. Fig. 2 is a schematic cross-sectional view of an inner core protection structure 010 of an intelligent flow regulator for a natural gas well according to this embodiment, wherein the valve core device 400 is in an off-valve position. Fig. 3 is a schematic perspective view of a protective cover 500 in an inner core protection structure 010 of an intelligent flow regulator for a natural gas well according to this embodiment.

Referring to fig. 1 and fig. 2 in combination, in the embodiment, the inner core protection structure 010 of the intelligent flow regulator for the natural gas well includes a valve body 100, a valve seat 200, a driving device 300, a valve core device 400, and a protection sleeve 500.

A working chamber 110 extending along a predetermined axis 100a is formed in the valve body 100. The valve body 100 is further provided with an inlet 120 and an outlet 130. The inlet 120 radially communicates the working chamber 110 with the outside, and the outlet 130 communicates with one end of the working chamber 110. Outlet 130 is coaxial with working chamber 110. The valve body 100 is further opened with a driving device mounting hole 140 communicating with the other end of the working chamber 110.

A valve seat 200 is secured in the outlet 130, and a fluid passage 210 is formed in the valve seat 200 to communicate the working chamber 110 with the outside. The driving device 300 is fixedly coupled to the driving device mounting hole 140. The valve core device 400 is disposed in the working chamber 110 and connected to the driving device 300.

The shield 500 is rotatably disposed within the working chamber 110 about a predetermined axis 100a, and the valve cartridge assembly 400 is disposed within the shield 500. The length of the protective sleeve 500 is smaller than the shortest distance between the valve seat 200 and the driving device 300, a gap is formed between the outer circumferential surface of the protective sleeve 500 and the inner circumferential surface of the working chamber 110, and the protective sleeve 500 is provided with a fluid through hole 510; the drive device 300 is configured to reciprocate the poppet device 400 between a closed valve position (the position shown in fig. 2) engaged with the valve seat 200 and an open valve position (the position shown in fig. 1) away from the valve seat 200. When the valve cartridge device 400 is in the open valve position, fluid is communicated with the fluid passage 210 through the orifice 510.

The inner core protection structure 010 of the intelligent natural gas well flow regulator provided by the embodiment is provided with a protection sleeve 500, and the protection sleeve 500 can be arranged in the working chamber 110 around the preset axis 100 a. When the valve cartridge assembly 400 is in the open valve position, fluid entering the working chamber 110 radially through the inlet 120 will rotate the shield 500. When fluid enters the protective sleeve 500 through the fluid passing hole 510, the fluid can uniformly impact each position of the valve core device 400, thereby avoiding concentrated impact of the fluid on a specific position on the valve core device 400, solving the problem that the valve core device 400 is obviously damaged in a short time by an erosion position, and avoiding the situation that the movement of the valve core device 400 is limited or the valve core device 400 cannot be effectively sealed due to the erosion damage of the specific position. The service life of the intelligent flow regulator of the natural gas well is greatly prolonged.

In this embodiment, the driving device 300 may be a pneumatic driving mechanism, a hydraulic driving mechanism, or an electric driving mechanism, as long as the valve core device 400 can be driven to reciprocate between the closed valve position and the open valve position.

Further, in this embodiment, the protecting sleeve 500 is further provided with a strip-shaped flow adjusting hole 520, and the flow adjusting hole 520 extends along the direction from the valve seat 200 to the driving device 300. The valve core device 400 has a cylindrical shape as a whole, and is slidably engaged with the inner circumferential surface of the shield 500 along the predetermined axis 100 a. When the valve cartridge device 400 moves directly between the open valve position and the closed valve position, the exposed length of the flow regulating bore 520 changes. When the valve cartridge assembly 400 is in the closed position, the flow regulating bore 520 is completely blocked by the valve cartridge assembly 400 and the flow regulating bore 520 has a minimal area of communication with the interior space of the shield 500. When the valve core device 400 is located at the valve-opening position, the flow rate adjustment hole 520 is completely exposed, and the communication area with the inner space of the shield 500 is maximized. In this manner, the flow rate of the fluid exiting the outlet 130 may be adjusted by adjusting the position of the valve cartridge assembly 400.

Further, in the present embodiment, the flow rate adjustment hole 520 is parallel to the preset axis 100 a.

Further, in the present embodiment, the flow regulating hole 520 is closer to the valve seat 200 than the fluid passing hole 510. In this way, the flow rate of the fluid flowing out of the outlet 130 can be more finely adjusted.

Further, in the present embodiment, the outer circumferential surface of the shield 500 is provided with a plurality of arc-shaped flow guide protrusions 530, and the plurality of flow guide protrusions 530 are uniformly arranged around the axis of the shield 500. By providing the guide protrusion 530, the protection sleeve 500 can be more easily rotated under the impact of the fluid, so as to further increase the uniformity of the impact on various portions of the valve core device 400.

Further, in the present embodiment, the number of the fluid passing holes 510 is 2, and the fluid passing holes 510 are uniformly arranged around the axis of the shield 500. In other embodiments, the number of fluid passing holes 510 is an even number.

Further, in this embodiment, the length of the shield 500 is 1-5mm less than the shortest distance between the valve seat 200 and the actuating means 300.

Further, in this embodiment, the shield 500 comprises a small diameter section 501 and a large diameter section 502 in sequence along the direction from the valve seat 200 to the driving device 300. The valve seat 200 is provided with a receiving hole 220, and one end of the small diameter section 501, which is far away from the large diameter section 502, is rotatably inserted into the receiving hole 220. Large diameter section 502 is rotatably engaged with the inner surface of working chamber 110.

The above description is only a few examples of the present application and is not intended to limit the present application, and those skilled in the art will appreciate that various modifications and variations can be made in the present application. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.