High-water-level reservoir bottom one-way drainage device

Abstract

The utility model discloses a high-water-level reservoir bottom one-way drainage device which comprises a water guide pipe, one end of the water guide pipe is connected with a filtering portion, and the other end of the water guide pipe is connected with a one-way drainage valve. The water guide pipe is installed in a reservoir bottom impermeable layer, the end, provided with the filtering part, of the water guide pipe is located in a reservoir bottom foundation, and the one-way drainage valve is installed on the water guide pipe and exposed out of the reservoir bottom. Leakage water in the reservoir bottom impermeable layer is drained through the drainage pipe and the one-way drainage valve, the water level of the reservoir bottom foundation is lowered, the phenomenon of confined water is eliminated, then a bottom plate of the reservoir bottom is prevented from overturning and protruding, the stability of the reservoir bottom impermeable body is improved, the service life of the reservoir bottom impermeable body is prolonged, and the structural safety of buildings in the hub area is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of reservoir drainage equipment, in particular to a one-way drainage device at a high water level reservoir bottom. Background Art

[0002] Most pure pumped-storage power plants feature full-basin anti-seepage measures for both the upper and lower reservoirs. The upper reservoir is a suspended reservoir with drainage corridors at the bottom to promptly remove groundwater seepage, generally preventing the risk of high floor water levels. However, due to the lower terrain of the lower reservoir, the groundwater level is relatively high. Even in suspended reservoirs, portions of the reservoir floor are often only a short distance from the natural groundwater level. If leakage after impoundment or infiltration from heavy rainfall causes the water level in the foundation to rise above the reservoir basin, creating "confined water," then when water from the lower reservoir is pumped to the upper reservoir, the weight of the water within the reservoir is insufficient to offset the buoyancy, potentially causing the floor to overturn and rise, or causing soil flow damage at the base of the earth-rock dam, compromising the structural safety and anti-seepage effectiveness of the lower reservoir structures. While draining the reservoir basin for maintenance is feasible when this occurs, it can impact the normal operation of the power station and, in the long term, incur high repair costs. Utility Model Content

[0003] In order to solve the problem that the water level of the existing reservoir bottom foundation is higher than the reservoir basin bottom plate, becoming "pressurized water", causing the bottom plate to bulge and damage and the safe operation of the anti-seepage system, the utility model provides a high water level reservoir bottom one-way drainage device.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] The utility model discloses a one-way drainage device for a high water level reservoir bottom, comprising a water pipe, one end of which is connected to a filter portion, and the other end of which is connected to a one-way drainage valve;

[0006] The water pipe is installed in the anti-seepage layer at the bottom of the reservoir, and one end of the water pipe where the filter is installed is located in the foundation at the bottom of the reservoir. The one-way drain valve installed on the water pipe is exposed at the bottom of the reservoir.

[0007] Preferably, the water pipe is made of polyethylene.

[0008] Preferably, the diameter of the water pipe is 80-120 mm.

[0009] Preferably, the one-way drain valve includes a connecting platform, the connecting platform is mounted on the end of the water pipe, and a sealing cover is connected to the end of the connecting platform away from the water pipe;

[0010] A water storage cavity and an installation cavity are provided in the connecting platform. The water storage cavity surrounds the installation cavity. The water storage cavity and the installation cavity are connected to the water guide pipe. A drainage hole is provided on the end surface of the water storage cavity facing the cover.

[0011] A counterweight block is installed in the installation cavity, a connecting rod is connected to the counterweight block, and the connecting rod is connected to the cover.

[0012] Preferably, a buoyancy plate is provided on an end surface of the counterweight block opposite to the water conduit.

[0013] Preferably, a water flow accelerator is installed in the water conduit, and the water outlet of the water flow accelerator is connected to the cavity opening of the water storage cavity on the one-way drain valve.

[0014] Preferably, the water flow accelerator includes a mounting sleeve, which is installed in the water pipe, and the water outlet end of the mounting sleeve is connected to the water storage chamber outlet end provided on the one-way drain valve; the mounting sleeve is provided with a water guide plate.

[0015] Preferably, the installation sleeve is a conical sleeve, the large-diameter end of the conical sleeve is installed in the water pipe, and the small-diameter end of the conical sleeve is connected to the one-way drain valve.

[0016] Preferably, the filter portion includes a geotextile and a filter material, the filter material wraps the geotextile, the geotextile is tied to the end of the water pipe located inside the reservoir bottom, and the filter material is located at the end of the water pipe.

[0017] Preferably, the length and width of the geotextile are both 30-50 cm.

[0018] Compared with the prior art, the present invention has the following beneficial technical effects:

[0019] The utility model discloses a one-way drainage device for a high-water-level reservoir bottom, which comprises a drainage pipe arranged in an anti-seepage layer at the reservoir bottom, with a one-way drainage valve installed on the drainage pipe. When the water level of the reservoir bottom foundation is higher than the reservoir basin bottom plate, the leakage water in the anti-seepage layer at the reservoir bottom is discharged through the drainage pipe and the one-way drainage valve, thereby lowering the water level of the reservoir bottom foundation, eliminating the phenomenon of "pressurized water", and thus avoiding the overturning and bulging of the bottom plate of the reservoir bottom, thereby improving the stability of the anti-seepage body at the reservoir bottom, extending its service life, and ensuring the structural safety of buildings in the hub area.

[0020] Furthermore, the one-way drain valve in this device is operated by dragging the counterweight block along the installation cavity through the seepage water, and then the cover is opened. After the cover is opened, the seepage water in the water storage cavity will be discharged through the drain port. When the water pressure outside the reservoir is the same as the water pressure in the anti-seepage layer at the bottom of the reservoir, the water outside the reservoir will move downward under the action of gravity and the counterweight block in the valve body, and the one-way drain valve will be closed again. This structure is simple and can drain water in one direction, preventing the water in the reservoir from flowing back into the anti-seepage layer at the bottom of the reservoir through this device when the device is not draining water.

[0021] Furthermore, a buoyancy plate is provided on the bottom end surface of the counterweight block in the device, which can reduce the depth of the counterweight block sinking into the seepage water, increase the speed of opening the one-way drain valve, and improve the drainage efficiency of the device.

[0022] Furthermore, a water flow accelerator is installed in the water pipe of this device, which accelerates the water in the water pipe entering the one-way drain valve, increases the flow rate of the infiltrated water entering the one-way drain valve, and further improves the efficiency of opening the one-way drain valve.

[0023] Furthermore, the filter part of this device includes geotextile and filter material. The filter material wraps the geotextile, and then the geotextile is wrapped around the end of the water pipe to filter the infiltrated water, so as to prevent the infiltrated water from carrying a large amount of mud and sand during the discharge process and causing blockage of this device. At the same time, it prevents the migration of fine particulate matter in the reservoir foundation, causing settlement and deformation of the anti-seepage body, and affecting the use of this device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the installation of a one-way drainage device for a high water level reservoir bottom provided by the utility model;

[0025] Figure 2 This is a structural schematic diagram of a drain valve in a one-way drainage device for a high water level reservoir bottom provided by the utility model;

[0026] Figure 3 This is a structural schematic diagram of a water flow accelerator in a high water level reservoir bottom one-way drainage device provided by the utility model;

[0027] In the attached figure: 1. Anti-seepage layer at the bottom of the reservoir; 2. Filter part; 3. Water guide pipe; 4. One-way drain valve; 40. Water storage chamber; 41. Drain hole; 42. Sealing cover; 43. Connecting rod; 44. Counterweight; 45. Buoyancy plate; 46. Installation chamber; 5. Water flow accelerator; 51. Installation sleeve; 52. Water guide plate. DETAILED DESCRIPTION

[0028] Hereinafter, only certain exemplary embodiments are briefly described. As will be appreciated by those skilled in the art, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are to be regarded as illustrative in nature and not restrictive.

[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0030] In this utility model, unless otherwise expressly specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0031] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0032] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0033] See also Figure 1The utility model discloses a one-way drainage device for a high-water-level reservoir bottom. The device is arranged in a plum blossom shape at the bottom of the reservoir. The device includes a water pipe 3, which is installed in the anti-seepage layer 1 at the bottom of the reservoir, and one end of the water pipe 3 extends to the outside of the anti-seepage layer 1 at the bottom of the reservoir, and the other end is located in the reservoir bottom foundation at the position of the seepage water. A filter part 2 is installed on the end of the water pipe 3 located inside the anti-seepage layer 1 at the bottom of the reservoir. The filter part 2 can filter the seepage water in the bottom foundation of the reservoir to prevent the mixed sediment in the seepage water from entering the water pipe 3, which will cause blockage of the water pipe 3 in the long run. A one-way drainage valve is provided on the end of the water pipe 3 located outside the anti-seepage layer 1 at the bottom of the reservoir 4. The one-way drain valve 4 allows the seepage water in the water pipe 3 to be discharged only outwards; after the device is installed in the anti-seepage layer 1 of the reservoir bottom, when the water level of the reservoir bottom foundation is higher than the reservoir basin bottom plate due to leakage in the anti-seepage layer 1 after the reservoir is filled with water, infiltration of surface runoff from rainstorms, etc., the water level in the anti-seepage layer 1 of the reservoir bottom will be filtered through the filter part 2 of the device, and then enter the water pipe 3, and then the one-way drain valve 4 will be opened to discharge the seepage water into the reservoir, eliminating the phenomenon of "pressurized water", thereby avoiding the overturning and bulging of the bottom plate of the reservoir, improving the stability of the anti-seepage body at the bottom of the reservoir, extending its service life, and ensuring the structural safety of the buildings in the hub area.

[0034] Preferably, the water pipe 3 is made of polyethylene, has a diameter of 80-120 mm, and is inserted 10 cm into the foundation. In this embodiment, the diameter is preferably 80 mm.

[0035] See also Figure 2The one-way drain valve 4 includes a connecting platform, the lower end of the connecting platform is connected to the outer end of the water pipe 3 through a threaded sleeve, and the connection between the threaded sleeve and the connecting platform and the water pipe 3 is sealed. An annular water storage chamber 40 and an installation chamber 46 are provided in the connecting platform. The lower ends of the water storage chamber 40 and the installation chamber 46 pass through the lower end surface of the connecting platform. The installation chamber 46 is arranged at the center position of the connecting platform. The annular water storage chamber 40 surrounds the installation chamber 46. A drainage hole 41 is provided on the upper end surface of the water storage chamber 40. A counterweight block 44 is installed in the installation chamber 46. The counterweight block 44 is movably installed in the installation chamber 46, and a sealing process is performed between the counterweight block 44 and the inner wall of the installation chamber 46. A connecting rod 43 is connected to the upper end surface of the counterweight block 44. A mounting hole is vertically provided on the upper end surface of the connecting platform at its center position. The connecting rod 43 is movably installed in the mounting hole The closure 42 is connected to the top of the connecting rod 43 and the top of the connecting rod 43. When the closure 42 is opened, the water outside the water storage chamber 40 is discharged through the drain port. When the water pressure outside the reservoir is the same as the water pressure in the anti-seepage layer 1 at the bottom of the reservoir, the water outside the reservoir will move downward under the action of gravity and the counterweight 44 in the valve body, and the closure 42 will be closed again.

[0036] Preferably, a buoyancy plate 45 is provided on the bottom end face of the counterweight block 44. When the seepage water in the anti-seepage layer 1 at the bottom of the reservoir enters the one-way drain valve 4 through the water guide pipe 3, the buoyancy plate 45 can reduce the depth of the counterweight block 44 sinking into the center of the seepage water, thereby allowing the seepage water to accelerate the speed of lifting the counterweight block 44, increase the speed of opening the one-way drain valve 4, and improve the drainage efficiency of the device.

[0037] See also Figure 1 and Figure 3 A water flow accelerator 5 is installed at the outer end of the water pipe 3. The water flow accelerator 5 includes a mounting sleeve 51. The mounting sleeve 51 is a conical sleeve. The large-diameter end of the conical sleeve is located in the water pipe 3, and the small-diameter end is connected to the lower end of the one-way drain valve 4. A plurality of water guide plates 52 are arranged in the mounting sleeve 51, so that the infiltration water flow squeezed in the anti-seepage layer 1 at the bottom of the reservoir enters the water pipe 3 and flows along the water guide plate 52 before flowing into the one-way drain valve 4. Then, the infiltration water flow is accelerated in conjunction with the conical sleeve, thereby increasing the flow rate of the infiltration water entering the one-way drain valve 4, and further improving the efficiency of opening the one-way drain valve 4.

[0038] See also Figure 1The filter part 2 includes geotextile and filter material. The filter material wraps the geotextile, and then the geotextile is wrapped on the end of the water pipe 3. The infiltrated water is filtered by the geotextile and the filter material to prevent the infiltrated water from carrying a large amount of sediment during the discharge process to cause blockage of the device and affect the use of the device.

[0039] Preferably, the length and width of the geotextile are both 30-50 cm. In this embodiment, the length and width of the geotextile are both 30 cm.

[0040] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended that all changes that fall within the meaning and range of equivalents of the claims are included in the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

[0041] In addition, it should be understood that although this specification describes the embodiments, not every embodiment contains only one independent technical solution. This description is for clarity only. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art. The above content is only for the purpose of illustrating the technical concept of the present utility model and cannot be used to limit the scope of protection of the present utility model. Any changes made based on the technical solution in accordance with the technical concept proposed by the present utility model shall fall within the scope of protection of the claims of the present utility model.

Claims

1. A high water level reservoir bottom one-way drainage device, characterized in that: It comprises a water pipe (3), one end of which is connected to a filter unit (2), and the other end of which is connected to a one-way drain valve (4); The water pipe (3) is installed in the anti-seepage layer (1) at the bottom of the reservoir, and one end of the water pipe (3) installed on the filter part (2) is located in the foundation of the bottom of the reservoir, and the one-way drainage valve (4) is installed on the water pipe (3) and exposed at the bottom of the reservoir.

2. A high water level reservoir bottom one-way drainage device according to claim 1, characterized in that: The water guide pipe (3) is made of polyethylene.

3. A high water level reservoir bottom one-way drainage device according to claim 2, characterized in that: The diameter of the water conduit (3) is 80-120 mm.

4. A high water level reservoir bottom one-way drainage device according to claim 1, characterized in that: The one-way drainage valve (4) comprises a connecting platform, the connecting platform is mounted on the end of the water pipe (3), and a sealing cover (42) is connected to the end of the connecting platform away from the water pipe (3); A water storage cavity (40) and an installation cavity (46) are provided in the connection platform, the water storage cavity (40) surrounds the installation cavity (46), the water storage cavity (40) and the installation cavity (46) are in communication with the water conduit (3), and a drainage hole (41) is provided on the end surface of the water storage cavity (40) opposite to the sealing cover (42); A counterweight block (44) is installed in the installation cavity (46), a connecting rod (43) is connected to the counterweight block (44), and the connecting rod (43) is connected to the sealing cover (42).

5. A high water level reservoir bottom one-way drainage device according to claim 4, characterized in that: A buoyancy plate (45) is provided on an end surface of the counterweight block (44) opposite to the water conduit (3).

6. A high water level reservoir bottom one-way drainage device according to claim 4, characterized in that: A water flow accelerator (5) is installed in the water conduit (3); the water flow accelerator (5) is installed in the water conduit (3), and the water outlet of the water flow accelerator (5) is connected to the cavity opening of the water storage cavity (40) on the one-way drainage valve (4).

7. A high water level reservoir bottom one-way drainage device according to claim 6, characterized in that: The water flow accelerator (5) comprises a mounting sleeve (51), the mounting sleeve (51) being mounted in the water guide pipe (3), and the water outlet end of the mounting sleeve (51) being connected to the cavity outlet end of the water storage cavity (40) provided on the one-way drainage valve (4); the mounting sleeve (51) is provided with a water guide plate (52).

8. A high water level reservoir bottom one-way drainage device according to claim 7, characterized in that: The installation sleeve (51) is a conical sleeve, the large-diameter end of the conical sleeve is installed in the water pipe (3), and the small-diameter end of the conical sleeve is connected to the one-way drain valve (4).

9. The high water level reservoir bottom one-way drainage device according to claim 1, characterized in that: The filter part (2) comprises a geotextile and a filter material, the filter material wraps the geotextile, the geotextile is tied to the end of the water pipe (3) located inside the reservoir bottom anti-seepage layer (1), and the filter material is located at the end of the water pipe (3).

10. A high water level reservoir bottom one-way drainage device according to claim 9, characterized in that: The length and width of the geotextile are both 30-50 cm.

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