CN208455807U

CN208455807U - A kind of powerhouse of hydropower station sump

Info

Publication number: CN208455807U
Application number: CN201820706869.1U
Authority: CN
Inventors: 袁幸朝; 梁涛; 熊亮
Original assignee: Sinohydro Bureau 5 Co Ltd
Current assignee: Sinohydro Bureau 5 Co Ltd
Priority date: 2018-05-11
Filing date: 2018-05-11
Publication date: 2019-02-01
Anticipated expiration: 2028-05-11

Abstract

The utility model discloses a kind of powerhouse of hydropower station sumps, including leakage sump and maintenance sump；Leak sump and maintenance sump between by discharge pipe line from leakage sump to maintenance sump unilaterally connected；Casing with holes is arranged in leakage sump, bottom is equipped with impervious barrier；Band hole sleeve is outer to be filled with permeable formation between leakage sump inner wall；The utility model structure is simple, easy to use, improves the utilization rate of unit maintenance sump and its pumping equipment, reduces the investment of civil engineering and electromechanical equipment, the consumption and equipment operation maintenance expense of station service.

Description

A kind of powerhouse of hydropower station sump

Technical field

The utility model relates to a kind of sumps, and in particular to a kind of powerhouse of hydropower station sump.

Background technique

Drainage system is the position for being easier to occur accident in power station, and accident occurs by direct threat power station Safe operation, should attract great attention；For example, sump, which occurred, for the Hunan hydroelectric power plant Feng Tan floods accident, Anhui Xiang Hongdian, Lee Also once there is the accident of water logging workshop in family gorge, Huanglong beach, the green hill power station Dian Deng, suffered heavy losses.

The draining of powerhouse of hydropower station unit maintenance mainly excludes conduit pipe, spiral case, runner envelope and draft tube internal water accumulation；Inspection Draining is repaired using gallery sump pattern, gallery is a part of sump, and the ponding of spiral case and draft tube passes through disc type valve row To drainage for overhaul gallery through-hole, then by being mounted on the deep well pump of sump to downstream；Seepage drainage is to exclude to seep in workshop Water rinses the sewage of water filter and catchmenting for each layer ground；Each layer is equipped with gutter in factory, is drained into up and down by floor drain It swims after main sewer to sump, underground power house will also exclude can not to flow automatically the country rock percolating water of discharge, be converged by scupper Collect to sump；Downstream is drained by the deep well pump being mounted in sump.

When too big or turbine chamber the water amount of seepage of flood season workshop hydraulic structure water percolating capacity is too big or seepage drainage pump And its when discharge pipe line failure, the water in seepage from powerhouse sump may cause water logging workshop because that can not be discharged in time Serious accident；Since unit maintenance sump is that have kill-job, i.e., when unit maintenance drains, sump top plate will be by hydraulic pressure Effect, and seepage from powerhouse sump is no kill-job, therefore two sumps are usually to be individually separated, be independently arranged；Due to water Turbine generator group needs the probability of drainage for overhaul low and lasting of draining every time is also shorter, therefore unit maintenance sump and its row Usually the most of the time is only used for excluding a small amount of leak of unit maintenance drain valve drainage facility, lies substantially in " free time " state, Utilization rate is very low；And on the other hand, in order to avoid may occur in the main building of power station leak sump in water because can not and When discharge and cause the serious accident of water logging workshop, usually the dischargeable capacity setting of sump will be leaked in main building very Greatly, and drain discharge and capacity that seepage drainage pumps are increased, the quantity or setting temporary drainage for increasing draining pump pump；So both not The function and effect that are individually separated, two sumps being independently arranged connection after can be sufficiently excavated out in main building；Also it increases The investment of civil engineering and electromechanical equipment increases the consumption and equipment operation maintenance expense of station service, is unfavorable for energy-saving and water The performance of economy of power plant benefit.

Utility model content

Powerhouse of hydropower station sump unobstructed, that utilization rate is high is drained the utility model discloses a kind of.

The technical solution adopted in the utility model is: a kind of powerhouse of hydropower station sump, including leakage sump and inspection Repair sump；Unidirectionally connected by discharge pipe line from leakage sump to maintenance sump between leakage sump and maintenance sump It is logical；Casing with holes is arranged in leakage sump, bottom is equipped with impervious barrier；Band hole sleeve is outer to be filled out between leakage sump inner wall Filled with permeable formation.

Further, the discharge pipe line includes sequentially connected water inlet pipe and communicating pipe；Communicating pipe is equipped with first row Water valve, water inlet pipe are equipped with the second drain valve.

Further, the leakage sump and maintenance sump top top plate are equipped with and are respectively equipped with entrance.

Further, the communicating pipe consolidation is located at leakage sump and overhauls in the structural body between sump.

Further, long handle gate valve is equipped with far from its water inlet side on the water inlet pipe.

Further, the bracket being used to support is equipped with below the water inlet pipe.

Further, the entrance is equipped with cover board.

Further, the water inlet pipe Bottom Altitude is identical as leakage sump alarm water level.

Further, the top plate is equipped with deep water well pump.

The beneficial effects of the utility model are:

(1) the utility model is being additionally arranged between leakage sump in unit maintenance sump in the main building of power station and factory A piece horizontal connecting pipeline, keep in the main building of power station in unit maintenance sump and factory leakage sump respectively function and Act on it is constant on the basis of, function and effect after both sufficiently having excavated out in main building two sumps connections, to improve unit The utilization rate of sump and its pumping equipment is overhauled, and can suitably reduce the dischargeable capacity and seepage drainage pump of leakage sump Drain discharge, capacity and quantity cancel temporary drainage pump, reduce the investment of civil engineering and electromechanical equipment, the consumption of station service and set Standby operation and maintenance cost, prevents the serious accident of water logging workshop from occurring, it is ensured that the operation of hydroelectric power plant's long-term safety and economic effect The performance of benefit；

(2) the utility model is equipped with band hole sleeve and permeable formation, so that sump draining is more unobstructed；

(3) the utility model water inlet pipe is arranged in leakage sump by bracket, so that its fixation is more stable；

(4) the utility model is provided with the first drain valve and the second drain valve, carries out in maintenance process in maintenance sump It can close, prevent malfunction operation.

Detailed description of the invention

FIG. 1 is a schematic structural view of the utility model.

In figure: 1- leaks sump, and 2- overhauls sump, 3- impervious barrier, 4- permeable formation, 5- water inlet pipe, 6- communicating pipe, 7- Second drain valve, the first drain valve of 8-, 9- band hole sleeve, 10- long handle gate valve, 11- top plate.

Specific embodiment

The utility model is described further in the following with reference to the drawings and specific embodiments.

As shown in Figure 1, a kind of powerhouse of hydropower station sump, including leakage sump 1 and maintenance sump 2；Leakage collection Well 1 and maintenance sump 2 between by discharge pipe line from leakage sump 1 to maintenance 2 unilaterally connected of sump；Leakage is catchmented Casing 9 with holes is arranged in well 1, bottom is equipped with impervious barrier 3；Outer be filled between leakage 1 inner wall of sump of band hole sleeve 9 is seeped Permeable layers 4.

Further, the discharge pipe line includes sequentially connected water inlet pipe 5 and communicating pipe 6；Communicating pipe 6 is equipped with first Drain valve 8, water inlet pipe 5 are equipped with the second drain valve 7.

Further, the leakage sump 1 and maintenance 2 top top plate 11 of sump are equipped with and are respectively equipped with entrance.

Further, it consolidates the communicating pipe 6 in the structural body being located between leakage sump 1 and maintenance sump 2.

Further, long handle gate valve 10 is equipped with far from its water inlet side on the water inlet pipe 5.

Further, the bracket 12 being used to support is equipped with below the water inlet pipe 5.

Further, the entrance is equipped with cover board.

Further, 5 Bottom Altitude of water inlet pipe is identical as leakage 1 alarm water level of sump.

Further, the top plate 11 is equipped with deep water well pump.

The utility model is being additionally arranged one between leakage sump in unit maintenance sump in the main building of power station and factory The horizontal connecting pipeline of root is keeping leaking sump respectively function and work in unit maintenance sump and factory in the main building of power station On the basis of constant, the function and effect in main building after two sump connections were both sufficiently excavated out, to improve unit inspection The utilization rate of sump and its pumping equipment is repaired, and can suitably reduce the dischargeable capacity of leakage sump and the row of seepage drainage pump Water flow, capacity and quantity cancel temporary drainage pump, reduce the investment of civil engineering and electromechanical equipment, the consumption and equipment of station service Operation and maintenance cost prevents the serious accident of water logging workshop from occurring, it is ensured that the operation of hydroelectric power plant's long-term safety and economic benefit Performance；Equipped with band hole sleeve and permeable formation, so that sump draining is more unobstructed；Water inlet pipe is arranged by bracket to be collected in leakage In well, so that its fixation is more stable；It is provided with the first drain valve and the second drain valve, overhauled in maintenance sump Cheng Zhongke is closed, and prevents malfunction operation.

Claims

1. a kind of powerhouse of hydropower station sump, which is characterized in that including leakage sump (1) and maintenance sump (2)；Leakage Unidirectionally connected by discharge pipe line from leakage sump (1) to maintenance sump (2) between sump (1) and maintenance sump (2) It is logical；It is arranged with casing with holes (9) in leakage sump (1), bottom is equipped with impervious barrier (3)；Band hole sleeve (9) catchments with leakage outside Permeable formation (4) are filled between well (1) inner wall.

2. a kind of powerhouse of hydropower station sump according to claim 1, which is characterized in that the discharge pipe line include according to The water inlet pipe (5) of secondary connection and communicating pipe (6)；Communicating pipe (6) is equipped with the first drain valve (8), and water inlet pipe (5) is equipped with second Drain valve (7).

3. a kind of powerhouse of hydropower station sump according to claim 1, which is characterized in that the leakage sump (1) It is equipped with top plate (11) above maintenance sump (2) and is respectively equipped with entrance.

4. a kind of powerhouse of hydropower station sump according to claim 2, which is characterized in that communicating pipe (6) consolidation It is located at leakage sump (1) and overhauls in the structural body between sump (2).

5. a kind of powerhouse of hydropower station sump according to claim 2, which is characterized in that remote on the water inlet pipe (5) Long handle gate valve (10) are equipped with from its water inlet side.

6. a kind of powerhouse of hydropower station sump according to claim 2, which is characterized in that below the water inlet pipe (5) Equipped with the bracket (12) being used to support.

7. a kind of powerhouse of hydropower station sump according to claim 3, which is characterized in that the entrance is equipped with lid Plate.

8. a kind of powerhouse of hydropower station sump according to claim 2, which is characterized in that water inlet pipe (5) bottom Elevation is identical as leakage sump (1) alarm water level.

9. a kind of powerhouse of hydropower station sump according to claim 3, which is characterized in that the top plate (11) is equipped with Deep water well pump.