CN215593920U

CN215593920U - Dam corridor drainage device

Info

Publication number: CN215593920U
Application number: CN202121512082.XU
Authority: CN
Inventors: 姚松; 卢斌; 王家志; 王贤发; 孙义兵
Original assignee: Guizhou Jingwei Botong Technology Co ltd; Guizhou Qianyuan Electric Power Co Ltd Pudding Power Generating Co
Current assignee: Guizhou Jingwei Botong Technology Co ltd; Guizhou Qianyuan Electric Power Co Ltd Pudding Power Generating Co
Priority date: 2021-07-05
Filing date: 2021-07-05
Publication date: 2022-01-21
Anticipated expiration: 2031-07-05

Abstract

The utility model discloses a dam gallery drainage device, which comprises a dam foundation body and a drainage device, wherein the dam foundation body is provided with a drainage hole; the drain hole comprises a drain section and a mounting section; the inner diameter of the mounting section is larger than that of the drainage section; the drainage and drainage device comprises a drainage pipe, an adapter, a water conduit, an end cover and an annular sealing ring; the annular sealing ring is sleeved on the drain pipe and is arranged between the adapter and the mounting section; the water conduit is arranged in the pipeline laying groove, and the tail end of the water conduit is connected with the drainage ditch. The utility model can discharge the water at the bottom of the dam foundation body and guide the water into the drainage ditch of the dam foundation body, thereby avoiding the water discharged from the drainage holes from flooding the passageway of the dam foundation body and being beneficial to the passage of the passageway.

Description

Dam corridor drainage device

Technical Field

The utility model relates to the field of drainage devices, in particular to a dam gallery drainage device.

Background

During the construction of the hydropower station, galleries are usually arranged, and the galleries are widely applied to all parts of a project and can be used as grouting construction passages, traffic, placing equipment and the like. The gallery is generally of a tunnel type, is lined by concrete full-section lining, and has a small tunnel section and a narrow construction operation space. Most galleries are usually provided with drain holes on a gallery foundation dam body in design, so that the excessive water pressure at the bottom of the foundation dam body plays a role in draining and relieving pressure, and the bulletin number is as follows: CN 204326032U, name: the utility model discloses a utility model patent of "drainage gallery structure in concrete dam" discloses a drainage gallery structure in concrete dam, including dam body concrete and set up the precast concrete arch cover on dam body concrete, precast concrete arch cover is semi-circular structure, and it has geotechnological cloth to encircle the surface covering at precast concrete, it is provided with the dam foundation wash port to lie in precast concrete arch cover below on the dam body concrete, owing to do not add the diversion device, can submerge whole dam foundation when the interior log raft of dam foundation wash port comes out the back, therefore is not convenient for walk in the gallery, therefore need provide a dam gallery drainage diversion device in order to solve the problem that prior art exists.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of providing a dam gallery drainage device which is convenient for drainage and diversion and avoids a gallery from being submerged by water.

In order to solve the technical problems, the technical scheme of the utility model is as follows: a dam gallery drainage device comprises a dam foundation body and a drainage device, wherein the dam foundation body is provided with a drainage hole, one side of the dam foundation body is provided with a drainage ditch, and the dam foundation body is provided with a pipeline laying groove; the drain hole comprises a drain section and a mounting section; the inner diameter of the mounting section is larger than that of the drainage section; the drainage and drainage device comprises a drainage pipe, an adapter, a water conduit, an end cover and an annular sealing ring; the annular sealing ring is sleeved on the drain pipe and is arranged between the adapter and the mounting section; the water conduit is arranged in the pipeline laying groove, and the tail end of the water conduit is connected with the drainage ditch.

Preferably, the drain pipe is connected with the adapter through threads.

Preferably, the drain pipe and the adapter are of an integrally formed structure.

Preferably, the outer diameter of the adapter is the same as the mounting section.

Preferably, the annular sealing ring is a rubber ring.

Preferably, the end cover and the adapter are in threaded connection.

Preferably, the water inlet end of the drain pipe is also provided with a filter screen.

Compared with the prior art, the utility model has the beneficial effects that: the utility model sets the drain hole as a drain section and a mounting section; the inner diameter of the mounting section is larger than that of the drainage section, so that a drainage device is convenient to mount; the annular sealing ring sleeve is arranged between the adapter and the mounting section, so that a sealing effect can be achieved, water flow of the drain hole is prevented from flowing onto the gallery, finally drained water is led into the drain ditch through the water diversion pipe to be drained away, the gallery is prevented from being submerged by water, and the passage is facilitated.

Drawings

FIG. 1 is a schematic structural view of a dam gallery drainage device of the present invention;

FIG. 2 is an exploded view of the structure of FIG. 1;

fig. 3 is a top view of fig. 1.

Detailed Description

The following further describes embodiments of the present invention with reference to the drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

As shown in fig. 1 to 3, the dam corridor drainage device of the utility model comprises a dam foundation body 1 and a drainage device 2, wherein the dam foundation body 1 is provided with a drainage hole 11, one side of the dam foundation body 1 is provided with a drainage ditch 12, and the dam foundation body 1 is provided with a pipeline laying groove 13 so as to lay a pipeline; the drain hole 11 includes a drain section 111 and a mounting section 112; the drainage section 111 and the mounting section 112 are both hollow cylindrical structures, and the inner diameter of the mounting section 112 is larger than that of the drainage section 111; the drainage and drainage device 2 comprises a drainage pipe 21, a joint 22, a water conduit 23, an end cover 24 and an annular sealing ring 25; the end cover 24 is in threaded connection with the adapter 22, so that the water can be conveniently opened and closed, the water drainage pipe 21 and the adapter 22 are of an integrally formed structure, the outer diameter of the adapter 22 is the same as that of the mounting section 112, the annular sealing ring 25 is sleeved on the water drainage pipe 21 and is mounted between the adapter 22 and the mounting section 112, and the annular sealing ring 25 is a rubber ring and has good sealing performance, so that water is prevented from flowing out; the water conduit 23 is installed in the pipe-laying tank 13 and connected at its end to the drainage ditch 12.

To facilitate installation and replacement of drain pipe 21, drain pipe 21 is threadably connected to adapter 22. In order to prevent residues mixed at the bottom of the dam foundation body 1 from entering the drain pipe 21 and causing blockage of the drain pipe 21, a filter screen (not shown in the figure) is arranged at the water inlet end of the drain pipe 21.

The installation and specific working principle of the utility model are as follows: when the dam foundation body 1 is poured, a mold which is consistent with the drain pipe 21 and the adapter 22 in an integrated forming structure is prepared in advance, after the dam foundation body 1 is formed, the mold is taken out, during installation, the annular sealing ring 25 is sleeved on the drain pipe 21 in advance, finally, all equipment is installed according to the scheme shown in the figure 1, finally, the drainage device 2 is fixed in the drain hole 11 by pouring cement mortar, when the bottom of the dam foundation body 1 is too much due to water accumulation, water is drained from the drain hole 11 continuously under the action of pressure, and finally, the water is drained into the drain ditch 12 from the water guide pipe 23 through the adapter 22, so that the water is prevented from flowing into the dam foundation body 1.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, and the scope of protection is still within the scope of the utility model. Finally, it should be noted that the contents not described in detail in the specification belong to the prior art known to those skilled in the art, and those skilled in the art can implement the contents without creative efforts, so that the details are not described herein.

Claims

1. A dam gallery drainage device comprises a dam foundation body (1) and a drainage device (2), wherein the dam foundation body (1) is provided with a drainage hole (11), one side of the dam foundation body (1) is provided with a drainage ditch (12), and the dam foundation device is characterized in that the dam foundation body (1) is provided with a pipeline laying groove (13); the drain hole (11) comprises a drain section (111) and a mounting section (112); the inner diameter of the mounting section (112) is larger than that of the drainage section (111); the drainage and drainage device (2) comprises a drainage pipe (21), an adapter (22), a water conduit (23), an end cover (24) and an annular sealing ring (25); the annular sealing ring (25) is sleeved on the drain pipe (21) and is arranged between the adapter (22) and the mounting section (112); the water conduit (23) is arranged in the pipeline laying groove (13), and the tail end of the water conduit is connected with the drainage ditch (12).

2. The dam corridor drainage device according to claim 1, characterized in that the drain pipe (21) is screwed to the adapter (22).

3. The dam corridor drainage device according to claim 1, characterized in that the drain pipe (21) and the adapter (22) are of an integrally formed structure.

4. The dam gallery drainage device of claim 1, wherein the adapter (22) has the same outer diameter as the mounting section (112).

5. The dam gallery drainage device of claim 1, wherein the annular sealing ring (25) is a rubber ring.

6. The dam gallery drainage device of claim 1, wherein the end cap (24) is threaded with the adapter (22).

7. The dam corridor drainage device according to any of claims 1 to 6, characterized in that the inlet end of the drain pipe (21) is further provided with a filter screen.