1. A self-floating plugging gate comprises a gate leaf, a side wheel, a water stopping device and an embedded part arranged in a gate groove;

the door leaf comprises an upstream side, a downstream side and a sealing plate for connecting four sides of the upstream side and the downstream side, a sealing cavity is formed in the door leaf, and a reinforcing internal support framework is arranged in the cavity;

the water stopping device comprises gate-shaped water stopping belts arranged on the left side, the right side and the top of the downstream side of the gate leaf and a bottom water stopping belt arranged at the bottom of the gate leaf, wherein the gate-shaped water stopping belts and the bottom water stopping belt form a square shape, and are used for squeezing the water stopping belts for plugging gaps between the gate and the downstream side track under the head pressure of the upstream water after the plugging gate is placed in the gate slot, so that gaps between the gaps are fully plugged;

the embedded part comprises a reverse rail arranged on the downstream side of the gate slot, a positive rail arranged on the upstream side and a sill arranged at the bottom of the gate slot; the bottom waterstop belt can be matched with the bottom sill to realize sealing;

the side wheels are arranged on the upstream side of the gate leaf, and the left edge and the right edge are respectively arranged up and down and are used for sliding downwards along the water facing side of the gate track in the process of lowering the gate, so that large deformation and smooth sliding are avoided in the process of sliding downwards of the gate;

the top of the door leaf is provided with a water injection hole and an exhaust hole, and the bottom of the door leaf is provided with a drain hole.

2. The self-floating plugging gate of claim 1, wherein: the reinforced internal bracing framework comprises girder webs which are transversely braced between the top beams and the bottom beams at certain intervals, longitudinal girder webs which are vertically arranged are arranged in the middle of each layer of girder webs, the girder webs are divided into a left girder web and a right girder web, and a downstream sealing plate is arranged between the downstream sides of the girder webs of each layer; the left and right longitudinal beam webs and the longitudinal beam webs are provided with hollow windows to keep the inner space of the whole door leaf communicated.

3. The self-floating plugging gate of claim 2, wherein: the upper wing edge plates which are vertically arranged and connected with the panels are arranged on the upstream sides of the top beam, the bottom beam and the main beam web plate; the downstream sides of the top beam, the bottom beam, the two edge beams, the main beam web and the longitudinal beam web are respectively provided with a lower flange plate, and the lower flange plates are connected with the downstream sealing plates.

4. The self-floating plugging gate of claim 1, wherein: the door-shaped water stop comprises a hollow columnar portion and a sheet-shaped connecting portion, the sheet-shaped connecting portion is arranged on one side of the hollow columnar portion and tangent to a columnar excircle, a mounting bottom plate is arranged at the mounting position of the door-shaped water stop for the door leaf, the sheet-shaped connecting portion of the door-shaped water stop is arranged on the mounting bottom plate through a bolt and a plurality of water stop pressing plates, a first rubber pad is arranged at a gap between the hollow columnar portion and the door leaf and exposed above the water stop pressing plates, and a second rubber pad is arranged between the sheet-shaped connecting portion and the mounting bottom plate.

5. The self-floating plugging gate of claim 4, wherein: the bottom water stop belt comprises bottom water stop rubbers arranged along the bottom of the panel and the bottom of the edge beam and a bottom water stop pressing plate for tightly pressing and fixing the bottom water stop rubbers on the surfaces of the panel and the edge beam, and the lower edges of the bottom water stop rubbers are exposed out of the edges of the bottoms of the panel and the edge beam; the top of the bottom water stop rubber on the panel is provided with a bottom water stop baffle which is vertically connected with the panel, and the upper side of the bottom water stop baffle is provided with a plurality of bottom water stop rib plates which are vertical to the bottom water stop baffle and the panel.

6. The self-floating plugging gate of claim 5, wherein: the bottom water stop belt further comprises a second bottom water stop rubber arranged on the edge of the door leaf and extending to the second rubber pad, the second bottom water stop rubber is fixed with the door leaf through a water stop pressing plate of the door-shaped water stop belt and a second bottom water stop pressing plate respectively, and the bottom water stop rubber at the bottom of the boundary beam penetrates through the bottom of the downstream side of the door leaf and is connected with the second bottom water stop rubber.

7. The self-floating plugging gate of claim 1, wherein: the side wheel is including setting up side wheel seat on the door leaf, locating the shaft at side wheel seat center perpendicularly, symmetry setting at the shaft edge and with 4 blocks of floor that the side wheel seat links to each other, set up at epaxial wheel, the shaft includes that bottom, diameter that link to each other with side wheel seat, floor are less than the bottom and length and the middle part that wheel thickness is equivalent, the neck of middle part upside and the tip that is greater than the neck with the diameter, the wheel is gone into through a pair of card the half moon shape retaining ring of neck is fixed at the middle part of shaft, and the retaining ring card is gone into behind the neck and is passed through the bolt fastening with the wheel.

8. The self-floating plugging gate of claim 1, wherein: the embedded part further comprises a grouting plate, the grouting plate is arranged between the two front rails on the downstream side of the gate slot and covers the whole tunnel, the bottom of the grouting plate is connected with the edge of the downstream side of the bottom sill, and a circular hole is reserved at the position of the grouting plate in the sand washing hole.

9. The self-floating plugging gate of claim 1, wherein: a lifting lug is arranged in the middle of the top of the door leaf, so that the door leaf can be conveniently lifted by a crane during early installation.

10. A method of operating a self-floating gate, comprising the steps of:

(1) assembling the side wheels, the water stopping device and the door leaves into a gate, and hanging the gate at a gate groove by utilizing the dry construction period, and dropping the gate moving water to a bottom sill after aligning with the gate groove; a temporary sand prevention measure is arranged at the top of the gate slot so as to prevent sand from falling to the top of the gate and increase the weight of the gate body;

(2) the water filling hole and the exhaust hole bolt at the top of the gate body of the gate are opened, and water is filled into the cavity of the gate body through the water filling hole, so that the floating of the gate caused by reservoir water level change in the construction period is prevented; after the water is filled, the water filling hole and the exhaust hole on the top of the door are sealed;

(3) after the gate is tightly assembled and pressed, a drain hole at the bottom of a gate body of the gate and a vent hole at the downstream side are opened, water in a cavity of the gate body is drained, and the drain hole and the vent hole are sealed after the water is drained;

(4) after the gate blocks water, the grouting plate, the embedded part and the sand-washing hole steel pipe are welded firmly in time, so that concrete plugs can be poured, water flow leaked from the gate is removed by the steel pipe, and pressure cannot be built between the gate and the grouting closing plate in the construction period;

(5) after the tunnel is transformed, before the gate is blocked and self-floats and opened, the steel pipe is slowly filled with horizontal pressure under the condition of ensuring smooth exhaust in the steel pipe, then the sand washing hole is filled with water, the pressure on two sides of the gate is balanced, the gate is separated from the gate groove, the friction force is eliminated, and the gate passes through the self buoyancy;

(6) after the gate leaves the water surface, the gate valve of the bottom hole is used for blocking water.

Background

In water conservancy projects, temporary plugging gates exist, gates which are used less frequently or used temporarily, for example, plugging gates in front of a diversion tunnel of a dam can be used only after concrete pouring of the diversion tunnel is finished after plugging, in some water conservancy projects, particularly, the section size of the diversion tunnel is small, a pouring concrete plate is used as a plugging plate before plugging concrete, then the plugging concrete is poured together without any treatment, so that the construction cost is saved, the construction progress is accelerated, in some construction environments, a sand washing pipe needs to be reserved at a plugging section in front of a water tower, plugging cannot be directly carried out by adopting the method described above, and the plugging gates cannot be taken out after the water is stored in the dam.

The sand washing pipe is mainly used for cleaning sand and sludge in the water supply pipe in the tunnel by utilizing the water pressure of the high water head, and simultaneously, the sludge in front of the plugging section can be discharged to a sewage disposal pool at the tail end of the tunnel in time through a pipeline, so that the water supply pipeline is smooth and sufficient water supply is provided before the water intake tower, and the normal work of a water supply system is ensured.

In some construction environments, due to the requirement of the structure, the plugging gate needs to be arranged in the plugging gate groove before the dam stores water, so that the water level of the reservoir area is lifted, and meanwhile, the installation of the water pipeline of the diversion tunnel and the concrete pouring of the plugging section are completed; after the dam stores water and reaches the water supply condition, the plugging gate needs to be removed, otherwise the normal use of the sand washing pipe cannot be ensured; under the premise of not designing a power device, related measures need to be adopted, and the lifting of the plugging gate is also a technical problem.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide a self-floating type plugging gate, which is lifted by using the buoyancy of water when the gate is removed, so that the construction cost and the construction period are saved.

The technical scheme of the invention is as follows:

a self-floating plugging gate comprises a gate leaf, a side wheel, a water stopping device and an embedded part arranged in a gate groove; the door leaf comprises an upstream side, a downstream side and a closed plate with four sides connected with the upstream side and the downstream side, and a closed cavity is formed by the upstream side, the downstream side and the four sides together; the water stopping device comprises two sides, the bottom and the top which are arranged on the downstream side of the gate blade and is used for squeezing a water stopping belt for blocking gaps between the plugging gate and the downstream side track under the pressure of a water head on the water surface after the plugging gate is placed in the gate slot, so as to fully block the gaps between the gaps and prevent water in a dam area from entering the plugging section; the embedded part comprises a positive rail arranged on the downstream side of the gate slot, a reverse rail arranged on the upstream side and a sill arranged at the bottom of the gate slot; the bottom waterstop belt can be matched with the bottom sill to realize sealing; the side wheels are arranged on the upstream side of the gate leaf, are respectively arranged on the left side and the right side, and are used for sliding downwards along the water facing side of the gate track in the process of lowering the gate, so that large deformation and smooth sliding are avoided in the process of sliding downwards of the gate; the top of the door leaf is provided with a water injection hole, the other is an exhaust hole, and the bottom is provided with a drain hole.

In a second aspect, the present invention also provides a method of operating a self-floating gate, comprising the steps of:

(1) assembling the side wheels, the water stopping device and the door leaves into a gate, and hanging the gate at a gate groove by utilizing the dry construction period, and dropping the gate moving water to a bottom sill after aligning with the gate groove; a temporary sand prevention measure is arranged at the top of the gate slot so as to prevent sand from falling to the top of the gate and increase the weight of the gate body;

(2) the water filling hole and the exhaust hole bolt at the top of the gate body of the gate are opened, and water is filled into the cavity of the gate body through the water filling hole, so that the floating of the gate caused by reservoir water level change in the construction period is prevented; after the water is filled, the water filling hole and the exhaust hole on the top of the door are sealed;

(3) after the gate is tightly assembled and pressed, a drain hole at the bottom of a gate body of the gate and a vent hole at the downstream side are opened, water in a cavity of the gate body is drained, and the drain hole and the vent hole are sealed after the water is drained;

(4) after the gate blocks water, the grouting plate, the embedded part and the sand-washing hole steel pipe are welded firmly in time, so that concrete plugs can be poured, water flow leaked from the gate is removed by the steel pipe, and pressure cannot be built between the gate and the grouting closing plate in the construction period;

(5) after the tunnel is transformed, before the gate is blocked and self-floats and opened, the steel pipe is slowly filled with horizontal pressure under the condition of ensuring smooth exhaust in the steel pipe, then the sand washing hole is filled with water, the pressure on two sides of the gate is balanced, the gate is separated from the gate groove, the friction force is eliminated, and the gate passes through the self buoyancy;

(6) after the gate leaves the water surface, the gate valve of the bottom hole is used for blocking water.

The invention has the advantages and beneficial effects that:

the device ingeniously utilizes the closed cavity to generate buoyancy in water, so that a power device is saved; meanwhile, the gate is tightly extruded to the reverse rail by utilizing the dead weight and the pressure of the water head difference, so that the air tightness of the water seal is ensured; after the plugging section and the following water supply pipeline are installed, the back sand washing pipe is fully filled with water and then is subjected to flat pressing, and the gate can be automatically lifted.

Drawings

Fig. 1 is a schematic view of an environment for using a self-floating plugging gate according to an embodiment of the present invention;

FIG. 2 is a top view of the use environment of FIG. 1;

FIG. 3 is a front and rear view of a self-floating plugging gate according to an embodiment of the present invention;

FIG. 4 is a top and bottom view of a self-floating plugging gate according to an embodiment of the present invention;

fig. 5 is a side view of a self-floating plugging gate according to an embodiment of the present invention;

fig. 6 is a cross-sectional side view of a self-floating plugging gate according to an embodiment of the present invention;

FIG. 7 is a cross-sectional view taken along line A-A of FIG. 3;

FIG. 8 is a cross-sectional view taken along line B-B of FIG. 3;

FIG. 9 is a bottom view of one half of the leaves of a self-floating plugging gate in accordance with an embodiment of the present invention;

FIG. 10 is a schematic structural diagram of a side wheel in a self-floating plugging gate according to an embodiment of the invention;

fig. 11 is a part view of a middle side wheel of a self-floating plugging gate, provided by the embodiment of the invention.

Detailed Description

The present invention will be described in further detail with reference to specific examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, and the two components can be communicated with each other. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

As shown in fig. 1 and 2, a self-floating plugging gate 1000 is arranged at an upstream opening of a diversion tunnel 21 at the bottom of a water intake tower 20, after the plugging gate 1000 is arranged in a plugging gate groove, the water level of a reservoir area can be raised, and then the installation of a sand washing pipe 22 of the diversion tunnel and the pouring of a plugging section concrete plug 23 can be completed.

As shown in fig. 3 and 4, the self-floating plugging gate 1000 comprises a gate blade 200, a side wheel 300, a water stopping device 400 and an embedded part 500 arranged in a gate slot 24;

the door leaf 200 comprises an upstream side, a downstream side and a closing plate connecting four sides of the upstream side and the downstream side, a closed cavity is formed inside the door leaf, and a reinforced inner support framework is arranged in the cavity;

the side wheels 300 are arranged on the upstream side of the gate leaf 200, and the left edge and the right edge are respectively arranged up and down, so that the side wheels slide down along the water facing side of the gate track in the process of lowering the gate, and large deformation and smooth sliding are avoided in the process of sliding down the gate;

the water stopping device 400 comprises gate-shaped water stops 410 arranged on the left side, the right side and the top of the downstream side of the gate leaf 200 and a bottom water stop belt 430 arranged at the bottom of the gate leaf, wherein the gate-shaped water stops 410 and the bottom water stop belt 430 form a square shape, and are used for squeezing the gate-shaped water stops 410 and the bottom water stop belt 430 for blocking gaps between the gate and the downstream side rail under the head pressure of the upstream water after the blocking gate 1000 is placed in a gate slot, so that the gaps between the gaps are fully blocked, water in a dam area is prevented from entering a blocking section, and a sand washing pipe 22 is arranged in the tunnel 21;

the embedded part 500 comprises a counter rail 510 arranged at the downstream side of the gate slot, a positive rail 520 at the upstream side and a sill 530 at the bottom of the gate slot; the bottom waterstop belt 430 can be matched with the bottom sill 530 to realize sealing;

the top of the door leaf 200 is provided with a water injection hole 204 and an exhaust hole 205, the bottom of the door leaf is provided with a water discharge hole 206, the hole diameter is opened according to the size of a water delivery pipe of irrigation equipment in future, the hole diameters of the water discharge hole and the exhaust hole can be 2-5mm smaller than that of the water injection hole, and the downstream side surface of the door leaf is provided with at least one vent hole 203, so that the drainage speed is accelerated.

In some embodiments, a lifting lug 201 is disposed at the middle of the top of the door leaf 200, so as to facilitate lifting by a crane during early installation.

As shown in fig. 6, in some embodiments, the upstream side of the door leaf 200 is provided with a single panel 210, the closing plate 220 on four sides of the panel includes a top beam 221, a bottom beam 222 and two side beams 223, the reinforcing inner bracing skeleton includes a girder web 231 that is cross-braced between the top beam and the bottom beam at an interval of 65cm, the girder web is made of a 12mm thick steel plate, a vertically arranged girder web 232 is provided in the middle of each layer of girder web, the girder web is divided into a left girder web and a right girder web, and a downstream closing plate 240 is provided between the downstream sides of each layer of girder web; the left and right main beam webs 231 and the longitudinal beam webs 232 are provided with hollow windows 233, so that the inner space of the whole door leaf is communicated.

In some embodiments, the upstream sides of the top beams 221, bottom beams 222, and spar webs 231 are each provided with a vertically disposed upper flange plate 251 attached to the panel; the downstream sides of the top beam 221, the bottom beam 222, the two edge beams, the main beam web 231 and the longitudinal beam web 232 are all provided with lower flange plates 252, and the lower flange plates 252 are connected with the downstream sealing plate 240; a triangular plate 260 is arranged at the joint of the bottom beam 222 and the upper flange plate 251 and the lower flange plate 252 on the two sides of the bottom beam; the bottom beam 222 is provided with a triangular plate 260 at the connection part with the upper flange plate 251 and the lower flange plate 252 at the two sides.

As shown in fig. 7, in some embodiments, the door-shaped water stop 410 includes a hollow cylindrical portion 411 and a sheet-shaped connection portion 412, the sheet-shaped connection portion 412 is disposed on one side of the hollow cylindrical portion 411 and tangent to the cylindrical outer circle, the door leaf is provided with a mounting base plate 270 at the mounting position of the door-shaped water stop, the sheet-shaped connection portion 412 of the door-shaped water stop is disposed on the mounting base plate 270 through bolts and a plurality of water stop pressing plates 420, the hollow cylindrical portion 411 is exposed outside the water stop pressing plates 420, a first rubber pad 413 is disposed in a gap between the hollow cylindrical portion 411 and the door leaf, and a second rubber pad 414 is disposed between the sheet-shaped connection portion and the mounting base plate.

As shown in fig. 8 and 9, in some embodiments, the bottom water stop strip 430 comprises a bottom water stop rubber 431 arranged along the bottom of the panel and the bottom of the edge beam, and a bottom water stop pressure plate 432 for pressing and fixing the bottom water stop rubber 431 on the surface of the panel and the edge beam, wherein the lower edge of the bottom water stop rubber 431 is exposed out of the bottom edges of the panel 210 and the edge beam 223; the top of the bottom water stop rubber 431 on the panel 210 is provided with a bottom water stop baffle 433 vertically connected to the panel, and the upper side of the bottom water stop baffle is provided with a plurality of bottom water stop rib plates 434 vertical to the bottom water stop baffle and the panel.

The bottom waterstop belt 430 further comprises a second bottom waterstop rubber 436 arranged on the second rubber pad 414 and extending to the edge of the door leaf, the second bottom waterstop rubber 436 is fixed with the door leaf 200 through a waterstop pressing plate 420 and a second bottom waterstop pressing plate 421 of the door-shaped waterstop respectively, and the bottom waterstop rubber 431 at the bottom of the side beam penetrates through the bottom of the downstream side of the door leaf and is connected with the second bottom waterstop rubber 436.

The exhaust hole 205 comprises an exhaust hole bolt 2051, a weight 2052 and an exhaust hole rubber 2053, and the structures of the water injection hole 204 and the water discharge hole 206 are the same as those of the exhaust hole 205.

As shown in fig. 10 and 11, in some embodiments, the side wheel 300 includes a side wheel seat 301 disposed on the door leaf, an axle 302 disposed perpendicular to the center of the side wheel seat, 4 side wheel ribs 303 symmetrically disposed on the edge of the axle and connected to the side wheel seat, and a wheel 304 disposed on the axle, wherein the axle 302 includes a bottom portion 3021 connected to the side wheel seat and the ribs, a middle portion 3022 having a diameter smaller than that of the bottom portion and a length corresponding to the thickness of the wheel, a neck portion 3023 on the upper side of the middle portion, and an end portion 3024 having a diameter larger than that of the neck portion, the wheel 304 is fixed to the middle portion of the axle by a pair of half-moon-shaped retaining rings 305 inserted into the neck portion, the retaining rings are fixed to the wheel by bolts after being inserted into the neck portion, and a bushing is disposed between the wheel 304 and the axle 302.

In some embodiments, the embedment 500 further includes a grout plate 540 which is disposed between the two counter rails 510 at the downstream side of the gate slot, covers the entire tunnel, and has a bottom connected to the downstream side edge of the sill 530, and the grout plate 540 leaves a circular hole at the position of the sand wash pipe 22.

When the water-saving valve is used, the upstream water head difference is utilized to tightly depend the valve on the downstream counter rail after the water is emptied from the sealing valve, so that the sealing condition is achieved, the water pressure on two sides of the valve is balanced after the downstream side is utilized to flush water, the valve filled with air can automatically float under the buoyancy action of the water, the power lifting is reduced, and the cost is reduced.

It should be noted that the gate steel surface and the exposed surface of the embedded part are anticorrosive by adopting a coating: the primer adopts epoxy zinc-rich paint with the thickness of 0.06mm, the intermediate paint adopts epoxy micaceous iron intermediate paint with the thickness of 0.08mm, and the finish paint adopts light gray epoxy finish paint with the thickness of 0.07 mm.

In a second aspect, the present invention also provides a method of operating a self-floating gate, comprising the steps of:

(1) assembling the side wheels, the water stopping device and the door leaves into a gate, and hanging the gate at a gate groove by utilizing the dry construction period, and dropping the gate moving water to a bottom sill after aligning with the gate groove; a temporary sand prevention measure is arranged at the top of the gate slot so as to prevent sand from falling to the top of the gate and increase the weight of the gate body;

(2) the water filling hole and the exhaust hole bolt at the top of the gate body of the gate are opened, and water is filled into the cavity of the gate body through the water filling hole, so that the floating of the gate caused by reservoir water level change in the construction period is prevented; after the water is filled, the water filling hole and the exhaust hole on the top of the door are sealed;

(3) after the gate is tightly assembled and pressed, a drain hole at the bottom of a gate body of the gate and a vent hole at the downstream side are opened, water in a cavity of the gate body is drained, and the drain hole and the vent hole are sealed after the water is drained;

(4) after the gate blocks water, the grouting plate, the embedded part and the sand-washing hole steel pipe are welded firmly in time, so that concrete plugs can be poured, water flow leaked from the gate is removed by the steel pipe, and pressure cannot be built between the gate and the grouting closing plate in the construction period;

(5) after the tunnel is transformed, before the blocking gate floats automatically and before the gate is opened, the water is slowly filled into the steel pipe for horizontal pressure under the condition of ensuring smooth exhaust in the steel pipe, the water filling time is not less than 10min, the gate is pushed towards the upstream side, so that the gate is separated from the gate groove, the friction force is eliminated, and the gate passes through the self buoyancy;

(6) after the gate leaves the water surface, the gate valve of the bottom hole is used for blocking water.

(7) If the water level is low during construction, the gate can be placed on the sill through self weight, and the bottom stop can be pressed tightly, so that the operation of the (2) and (3) is not needed.

After the gate blocks water, construction and installation work such as the diversion tunnel concrete plug, the sand washing bottom hole steel pipe, the gate valve group, the bottom hole conical phase, the opening and closing device and the like are completed in two months in time.

After the door body is assembled, a static balance test is carried out, and a method of adding a balance weight can be adopted to ensure that the mass center and the geometric center are superposed so as to ensure that the floating door body does not topple to one side.

After the gate is manufactured, an airtight experiment should be carried out, and the test pressure P is 0.4MPa and is more than 30 min.

The total weight of the gate is 7.34t, considering the counterweight, about 7.5t and the total weight of the buoyancy is 9.39t, and the buoyancy exceeding weight is ensured to be 1.9 t-2.5 t in the manufacturing process.

The present invention has been described in detail with reference to the examples, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.