CN219220616U

CN219220616U - Pumped storage power station for overall linkage reservoir feeding

Info

Publication number: CN219220616U
Application number: CN202320747764.1U
Authority: CN
Inventors: 杨江龙; 赵云云; 李志刚; 姚春萍; 吴海波
Original assignee: Gansu Water Conservancy And Hydropower Survey Design And Research Institute Co ltd
Current assignee: Gansu Water Conservancy And Hydropower Survey Design And Research Institute Co ltd
Priority date: 2023-04-07
Filing date: 2023-04-07
Publication date: 2023-06-20
Anticipated expiration: 2033-04-07

Abstract

The utility model discloses a pumped storage power station for comprehensively linking an upper reservoir, which comprises an upper reservoir, a lower reservoir and a water channel system connected between the upper reservoir and the lower reservoir, wherein the lower end of the water channel system is connected with a water pump-water turbine set, at least 2 upper reservoirs are communicated with each other through communicating pipes, the middle of each communicating pipe is connected with a blow-down pipe and is provided with 2 gates, and the 2 gates are positioned on two sides of the blow-down pipe; the number of the lower reservoirs is at least 1. The utility model is suitable for areas with poor site building conditions, and can increase the available storage capacity of the upper reservoirs by integrally linking a plurality of upper reservoirs, thereby increasing the installed capacity and the generated energy of the pumped storage power station, improving the freedom degree of site selection of a water channel system, reducing engineering risks and improving the economic index of site building.

Description

Pumped storage power station for overall linkage reservoir feeding

Technical Field

The utility model belongs to the technical field of hydroelectric engineering, and particularly relates to a pumped storage power station for comprehensively linking a water supply reservoir.

Background

With the continuous adjustment of the energy structure, the proportion of clean new energy such as wind power, photovoltaic and the like in the electric power system is increased. However, due to the characteristics of instability of new energy sources such as wind power, photovoltaic and the like, the novel power system has more urgent demands on the flexible adjusting power supply.

The pumped storage power station is used as the current most mature, economical and flexible power supply regulating mode, has the functions of peak regulation and valley filling, energy storage, frequency modulation, phase modulation, standby and the like, and plays an indispensable role in the construction process of a novel power system.

The pumped storage power station reservoir generally comprises an upper reservoir and a lower reservoir, the lower reservoir is generally a channel type reservoir, and the upper reservoir is relatively various in development mode due to condition limitation. In a new energy centralized area, due to the condition limitations of topography, geology, environmental assessment, water conservation, occupied land and civil migration and the like, the construction conditions of the pumped storage power station are generally poor, such as thicker soil coverage layer, smaller water head difference, limited water channel system layout and site selection and the like, the installed capacity of the pumped storage power station is not large, the economic index is poor, the engineering risk is high, and the pumped storage power station cannot be flexibly matched with an upper reservoir.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a pumped storage power station capable of integrally linking upper reservoirs, which is used for areas with poor site building conditions.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: the pumped storage power station for integrally linking the upper reservoirs comprises at least 2 upper reservoirs, at least 2 lower reservoirs and a water channel system connected between the upper reservoirs and the lower reservoirs, wherein the upper reservoirs are communicated through communicating pipes, the middle of each communicating pipe is connected with a blow-down pipe and provided with 2 gates, the 2 gates are positioned on two sides of the blow-down pipe, and the blow-down pipe is provided with a blow-down valve; the number of the lower reservoirs is at least 1.

As a preferable technical scheme of the utility model, water inlets and water outlets at two ends of the communicating pipe are respectively arranged at the bottom or the bank of the upper reservoir.

As a preferable technical scheme of the utility model, the dead water level elevation of each upper reservoir is the same, and the normal water level elevation of each upper reservoir is the same.

As a preferred technical scheme of the utility model, the water channel system is arranged between at least 1 upper reservoir and the lower reservoir.

As a preferable technical scheme of the utility model, the highest position of the communicating pipe is not higher than the bottom of the upper reservoir, and the emptying pipe is connected with the lowest position of the communicating pipe.

As a preferable technical scheme of the utility model, the water inlet and outlet at two ends of the communicating pipe are provided with a sewage blocking net.

As a preferable technical scheme of the utility model, the upper reservoir is connected in series in a linear sequence or in series from head to tail in a communicating manner through the communicating pipe.

As an optimal technical scheme of the utility model, the upper reservoirs are connected in pairs by communicating pipes.

The beneficial effects of adopting above-mentioned technical scheme to produce lie in: the utility model is suitable for areas with poor site building conditions, can integrally link a plurality of upper reservoirs, increases the available reservoir capacity of the upper reservoirs, further increases the maximum installed capacity of the pumped storage power station, ensures more flexible collocation and use of the upper reservoirs, improves the freedom degree of water channel system site selection, reduces engineering risks, and more highlights the functions of peak and valley regulation, energy storage, frequency modulation, phase modulation and standby of the pumped storage power station, thereby improving the economic index of site building. In addition, each upper reservoir can be independently emptied for maintenance, and the downtime caused by maintenance is reduced.

Drawings

The utility model will be described in further detail with reference to the drawings and the detailed description.

Fig. 1 is a schematic plan view of the present utility model.

Fig. 2 is an elevational schematic of the present utility model.

In the figure: 1. the water supply system comprises a water supply reservoir 2, a water channel system 3, a communicating pipe 4, a gate 5, a blow-down pipe 6, a blow-down valve 7, a water inlet and outlet 10, a ground line 101, a dead water level 102 and a normal water storage level.

Detailed Description

Referring to fig. 1 and 2, the structure of one specific embodiment of the utility model comprises an upper reservoir 1, a lower reservoir and a water channel system 2 connected between the upper reservoir 1 and the lower reservoir, wherein the lower end of the water channel system is connected with a water pump turbine unit, at least 2 upper reservoirs are communicated with each other through communicating pipes 3, the middle of each communicating pipe 3 is connected with a blow-down pipe 5 and is provided with 2 gates 4, the 2 gates 4 are positioned at two sides of the blow-down pipe 5, and a blow-down valve 6 is arranged on the blow-down pipe 5; the number of the lower reservoirs is at least 1.

The water inlet and outlet ports 7 at the two ends of the communicating pipe 3 are respectively arranged at the bottom or the bank of the upper reservoir 1.

The dead water level of each upper reservoir 1 is the same, and the normal water level of each upper reservoir 1 is the same.

The water channel system 3 is arranged between at least 1 upper reservoir 1 and a lower reservoir. The installation site of the water channel system 3 can be flexibly selected according to specific requirements of topography, geology, environmental assessment, water conservation and occupied land migration, and the design and construction of the power station can be carried out with the lowest cost, the lowest risk and the maximum installed capacity.

The highest position of the communicating pipe 3 is not higher than the bottom of the upper reservoir 1, and the emptying pipe 5 is connected with the lowest position of the communicating pipe 3.

The water inlet and outlet 7 at the two ends of the communicating pipe 3 are provided with a dirt blocking net. Avoiding the blockage caused by the dirt in the reservoir entering the communicating pipe 3.

The upper reservoir 1 is connected in a linear sequence or end to end manner through the communicating pipe 3. The present embodiment is applicable to a plurality of upper reservoirs 1 arranged linearly or in a circular arrangement.

In other embodiments of the present utility model, the upper reservoirs 1 are connected in pairs by communicating pipes 3. The present embodiment is applicable to an arrangement mode in which a plurality of upper reservoirs 1 are arranged at random and no other upper reservoirs 1 are blocked between every two upper reservoirs.

The plurality of upper reservoirs 1 are mutually communicated and are coordinated, the maximum installed capacity is increased, the upper reservoirs are matched and used more flexibly, the freedom degree of the water channel system 3 system site selection is improved, the engineering risk is reduced, the functions of peak regulation and valley filling, energy storage, frequency modulation, phase modulation and standby of the pumped storage power station are highlighted, and therefore the economic index of building a station is improved. In addition, through the regulation and control of gate 4 and relief valve 6, each upper reservoir 1 can independently empty and overhaul, has improved maintenance efficiency, has also avoided the mutual interference of maintenance work, reduces the dead time because of overhaul causes.

As can be seen from the ground line 10 in FIG. 2, the site of the upper reservoir 1 is located on a natural or artificial land at the mountain top, the shape of the reservoir basin is flexibly selected according to the topography, and the topography condition can be fully utilized to improve the available water head of the pumped storage power station.

The above description is presented only as a practical solution of the utility model and is not intended as a single limitation on the solution itself.

Claims

1. The utility model provides a water-pumped storage power station of overall linkage upper reservoir, includes upper reservoir, lower reservoir and connects the water course system between upper reservoir and lower reservoir, and the lower extreme water pump turbine unit of water course system, its characterized in that: the number of the upper reservoirs is at least 2, the upper reservoirs are communicated through communicating pipes, the middle of each communicating pipe is connected with a blow-down pipe and provided with 2 gates, the 2 gates are positioned at two sides of the blow-down pipe, and the blow-down pipe is provided with a blow-down valve; the number of the lower reservoirs is at least 1.

2. The pumped storage power station for comprehensively linking an upper reservoir according to claim 1, wherein: and water inlets and water outlets at two ends of the communicating pipe are respectively arranged at the bottom or on the bank of the upper reservoir.

3. The pumped storage power station for comprehensively linking an upper reservoir according to claim 1, wherein: the dead water level elevation of each upper reservoir is the same, and the normal water level elevation of each upper reservoir is the same.

4. The pumped storage power station for comprehensively linking an upper reservoir according to claim 1, wherein: the water channel system is arranged between at least 1 upper reservoir and lower reservoir.

5. The pumped storage power station for comprehensively linking an upper reservoir according to claim 1, wherein: the highest position of the communicating pipe is not higher than the bottom of the upper reservoir, and the emptying pipe is connected to the lowest position of the communicating pipe.

6. The pumped storage power station for comprehensively linking an upper reservoir according to claim 1, wherein: and the water inlet and outlet at two ends of the communicating pipe are provided with a sewage blocking net.

7. The pumped storage power station for the overall linked upper reservoir according to any one of claims 1 to 6, wherein: the upper reservoir is connected in series in a linear sequence or in series from head to tail in a communicating pipe communication mode.

8. The pumped storage power station for the overall linked upper reservoir according to any one of claims 1 to 6, wherein: the upper reservoirs are connected in pairs through communicating pipes.