CN217758622U - Leakage water collecting and discharging system for improving power generation benefit of hydropower station - Google Patents

Abstract

The utility model provides an improve percolating water of power generation benefit of power station and collect and discharge system, include: the system comprises a water retaining power generation building, a leakage water collecting system, a leakage water collecting well, a leakage water discharging pump and a leakage water discharging pipeline; the leakage water collecting well is internally provided with the leakage water discharging pump; one end of the water leakage drainage pipeline is connected with the water leakage drainage pump; the other end of the water leakage drainage pipeline is communicated with the upstream of the water retaining power generation building, and the outlet elevation of the water leakage drainage pipeline is higher than the highest water level of the upstream of the water retaining power generation building. The utility model provides an improve percolating water of power generation benefit of power station and collect and discharge system, the system layout is simple reasonable, and percolating water that percolating water was collected and discharge system retrieves leaks down through the power station unit and obtains extra electric energy, improves power generation benefit of power station.

Description

Leakage water collecting and discharging system for improving power generation benefit of hydropower station

Technical Field

The utility model belongs to the technical field of the power station percolating water is collected and is discharged, concretely relates to improve percolating water of power station electricity generation benefit and collect and discharge system.

Background

For the leakage water of the hydropower station, the following methods are adopted for collection and discharge at present: the water is collected to a basic drainage gallery through drainage ditches, drainage hidden culverts, drainage galleries, drainage pipes, drainage holes of a hydropower station foundation and the like distributed at each layer in a hydropower station building, collected to a seepage water collecting well through the basic drainage gallery, and pumped and drained to a downstream tail canal or a downstream river channel by a drainage pump. In order to avoid flooding the factory building, the pump lift of the water pump is determined according to the difference between the highest water level of the downstream and the lowest water level of the water collecting well and considering the head loss of the drainage pipeline. The drainage pump drains the leakage water to a downstream tail canal or a downstream river channel of the hydropower station, the water quantity of the leakage water is wasted, the benefits of the hydropower station are reduced, and particularly, the benefit loss is more obvious for the hydropower station with larger leakage water quantity and higher downstream highest water level.

SUMMERY OF THE UTILITY MODEL

Defect to prior art existence, the utility model provides an improve percolating water of power station electricity generation benefit and collect and discharge system, recoverable percolating water improves power station electricity generation benefit to manger plate electricity generation building upper reaches reservoir area.

The utility model adopts the technical scheme as follows:

the utility model provides an improve percolating water of power generation benefit of power station and collect and discharge system, include: the system comprises a water retaining power generation building (1), a leakage water collecting system (2), a leakage water collecting well (3), a leakage water discharge pump (4) and a leakage water discharge pipeline;

the water leakage collecting system (2) is arranged in the water retaining power generation building (1); the bottom of the water-retaining power generation building (1) is provided with the seepage water collecting well (3); the drainage end of the leakage water collecting system (2) is communicated with the leakage water collecting well (3);

the leakage water collecting well (3) is internally provided with the leakage draining pump (4); one end of the water leakage drainage pipeline is connected with the water leakage drainage pump (4); the other end of the water leakage drainage pipeline is communicated with the upstream of the water retaining power generation building (1), and the outlet elevation of the water leakage drainage pipeline is higher than the highest water level of the upstream of the water retaining power generation building (1).

Preferably, the leakage water collecting systems (2) are distributed in different elevations inside the water-retaining power generation building (1) and at a certain depth in the foundation of the water-retaining power generation building (1).

Preferably, the water leakage drainage pipeline comprises a water leakage vertical drainage pipe (5) and a water leakage horizontal drainage pipe (7);

the water outlet end of the seepage drainage pump (4) is connected with the bottom of the seepage vertical drainage pipe (5); the top of the water leakage vertical drain pipe (5) is connected with one end of the water leakage horizontal drain pipe (7); the other end of the water leakage horizontal drain pipe (7) is communicated with the upstream of the water retaining power generation building (1).

Preferably, the vertical water drainage pipe (5) for leaking water is provided with a check valve (6).

The utility model provides an improve percolating water of power generation benefit of power station and collect and discharge system has following advantage:

the utility model provides a leakage water collecting and discharging system for improving the generating benefit of a hydropower station, which can recover leakage water to an upstream reservoir area of a water-retaining generating building and improve the generating benefit of the hydropower station; and in the operation period of the hydropower station, the leakage water is collected and discharged to the reservoir area at the upstream of the water retaining building through the hydropower station leakage water collecting and discharging system, and the part of water can be used for generating power, so that the power generation benefit of the hydropower station is improved. The utility model discloses compare main advantage with traditional power station percolating water collection and discharge system and be: the traditional hydropower station leakage water collecting and discharging system directly discharges leakage water to a downstream tail canal or a downstream river channel, so that the part of water cannot be used for generating electricity; the utility model discharges the leakage water to the reservoir area at the upper reaches of the water retaining building, and the leakage water can be used for generating electricity; the utility model discloses it is great especially to be applicable to manger plate electricity generation building seepage water yield, and manger plate electricity generation building upper reaches maximum water level differs little with the maximum water level in low reaches, and normal operating period generating set upper and lower low reaches head differs great power station. The utility model discloses application scope is wide, has obvious technical and economic superiority.

Drawings

Fig. 1 is the structure diagram of the leakage water collecting and discharging system for improving the power generation benefit of the hydropower station provided by the utility model.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to further explain the present invention in detail. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

The utility model provides an improve percolating water of power generation benefit of power station and collect and discharge system is that the percolating water of retrieving percolating water to manger plate electricity generation building upper reaches reservoir area collects and discharge system, promptly: and in the operation period of the hydropower station, the leaked water is recovered to the upstream reservoir area of the water-retaining power generation building through the leaked water collecting and discharging system, and then is discharged downwards through the hydropower station unit to obtain extra electric energy. Therefore, the leakage water recovered by the leakage water collecting and discharging system can be discharged by the hydropower station unit to obtain additional electric energy; the problem of traditional percolating water collection and discharge system directly arrange the percolating water to low reaches tailrace or low reaches river course, can't retrieve the percolating water and the electric energy loss that leads to is solved.

Specifically, referring to fig. 1, the utility model provides a leakage water collecting and discharging system for improving the generating efficiency of hydropower station, which comprises a water retaining power generation building 1, a leakage water collecting system 2, a leakage water collecting well 3, a leakage draining pump 4 and a leakage water draining pipeline;

a leakage water collecting system 2 is arranged in the water-retaining power generation building 1; the bottom of the water-retaining power generation building 1 is provided with a leakage water collecting well 3; the water discharge end of the leakage water collecting system 2 is communicated with the leakage water collecting well 3;

a leakage draining pump 4 is arranged in the leakage water collecting well 3; one end of the water leakage drainage pipeline is connected with the water leakage drainage pump 4; the other end of the water leakage drainage pipeline is communicated with the upstream of the water retaining power generation building 1, and the outlet elevation of the water leakage drainage pipeline is higher than the highest water level of the upstream of the water retaining power generation building 1.

As a specific example, the leakage water collecting system 2 is distributed at different elevations inside the water-retaining power generation building 1 and at a certain depth inside the foundation of the water-retaining power generation building 1.

As a specific example, the water leakage drainage pipe includes a water leakage vertical drainage pipe 5 and a water leakage horizontal drainage pipe 7;

the water outlet end of the seepage drainage pump 4 is connected with the bottom of the seepage vertical drainage pipe 5; the top of the water leakage vertical drain pipe 5 is connected with one end of a water leakage horizontal drain pipe 7; the other end of the water leakage horizontal drainage pipe 7 is communicated with the upstream of the water retaining power generation building 1. In addition, the vertical drain pipe 5 for leakage water is mounted with a check valve 6.

In this application, the head loss of the vertical drain pipe 5 of the seepage water, the check valve 6 and the horizontal drain pipe 7 of the seepage water is determined according to the difference between the highest water level of the upstream of the water retaining power generation building 1 and the lowest water level of the seepage water collecting well 3.

Therefore, the leakage water collected by the leakage water collecting system 2 is collected to the leakage water collecting well 3, and the leakage water in the leakage water collecting well 3 flows through the leakage water vertical drain pipe 5, the check valve 6 and the leakage water horizontal drain pipe 7 in sequence under the action of the leakage water discharge pump 4 and finally is discharged to the upstream reservoir area of the water-retaining power generation building 1.

The utility model provides an improve percolating water of power generation benefit of power station and collect and discharge system, its theory of operation is:

taking the operation period of the hydropower station as an example, the leakage water collected by the leakage water collecting system 2 is collected to the leakage water collecting well 3, and the leakage water in the leakage water collecting well 3 sequentially flows through the leakage water vertical drain pipe 5, the check valve 6 and the leakage water horizontal drain pipe 7 under the action of the leakage water discharge pump 4 and is finally discharged to the upstream reservoir area of the water retaining power generation building 1; therefore, the leakage water is discharged by the hydropower station unit to obtain extra electric energy, and the leakage water can generate electric quantity by the generator unit, so that the power generation benefit is improved.

The utility model provides an improve percolating water of power generation benefit of power station and collect and discharge system can solve traditional percolating water and collect and discharge system and directly discharge the percolating water to low reaches tailrace or low reaches river course, can't retrieve the electric energy loss scheduling problem that percolating water caused.

Therefore, the utility model provides a leakage water collecting and discharging system for improving the generating benefit of the hydropower station, the system arrangement is simple and reasonable, the leakage water recovered by the leakage water collecting and discharging system is discharged by the hydropower station unit to obtain extra electric energy, and the generating benefit of the hydropower station is improved; the problem of traditional percolating water collect with discharge system directly arrange the percolating water to low reaches tailrace or low reaches river course, can't retrieve the electric energy loss that the percolating water caused is solved. As long as the electric energy obtained by the generator set of the water-retaining power generation building by utilizing the water leakage and the water head difference between the upper stream and the lower stream during power generation is larger than the electric energy consumed by the water leakage collecting and discharging system for overcoming the water head difference between the highest water levels of the upper stream and the lower stream of the water-retaining power generation building, the power generation benefit of the hydropower station can be improved. The utility model discloses application scope is wide, and the system layout is simple reasonable, has obvious technique and economic superiority.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be viewed as the protection scope of the present invention.

Claims (4)

1. A percolating water collection and discharge system for increasing the generating efficiency of a hydroelectric power station, comprising: the water leakage power generation system comprises a water retaining power generation building (1), a leakage water collecting system (2), a leakage water collecting well (3), a leakage drainage pump (4) and a leakage water drainage pipeline;

the water leakage collecting system (2) is arranged in the water retaining power generation building (1); the bottom of the water-retaining power generation building (1) is provided with the seepage water collecting well (3); the drainage end of the leakage water collecting system (2) is communicated with the leakage water collecting well (3);

the leakage water collecting well (3) is internally provided with the leakage water draining pump (4); one end of the water leakage drainage pipeline is connected with the water leakage drainage pump (4); the other end of the water leakage drainage pipeline is communicated with the upstream of the water retaining power generation building (1), and the outlet elevation of the water leakage drainage pipeline is higher than the highest water level of the upstream of the water retaining power generation building (1).

2. The leakage water collecting and draining system for improving the generating efficiency of the hydropower station according to claim 1, wherein the leakage water collecting system (2) is distributed at different elevations inside the water-retaining generating building (1) and at a certain depth inside the foundation of the water-retaining generating building (1).

3. The leakage water collecting and draining system for improving generating efficiency of a hydropower station as claimed in claim 1, wherein the leakage water draining pipe comprises a leakage water vertical draining pipe (5) and a leakage water horizontal draining pipe (7);

the water outlet end of the seepage drainage pump (4) is connected with the bottom of the seepage vertical drainage pipe (5); the top of the water leakage vertical drain pipe (5) is connected with one end of the water leakage horizontal drain pipe (7); the other end of the water leakage horizontal drain pipe (7) is communicated with the upstream of the water retaining power generation building (1).

4. The leakage water collecting and draining system for increasing the generating efficiency of a hydroelectric power station according to claim 3, characterised in that said leakage water vertical drain (5) is equipped with a non-return valve (6).

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