Novel pumped storage power station power generation combination system

Abstract

The invention discloses a novel pumped storage power station power generation combination system which comprises a pumped storage system and a power generation system, the pumped storage system comprises a drainage pipeline, a reservoir, a pumping pipeline, a third-stage reservoir, a second-stage reservoir and a first-stage reservoir, one end of the drainage pipeline is connected to the reservoir arranged on a mountain top, and the other end of the drainage pipeline is connected to a power station; the multiple water drainage pipelines and the multiple water pumping pipelines are arranged, the multi-stage reservoir is arranged at the adjacent mountain top, the power generation system comprises a generator set, an impeller, a connecting shaft and a transmission, a connecting pipe is arranged in the generator set, and one end of the connecting pipe is connected to seawater. According to the novel power generation combination system of the pumped storage power station, the condition that seawater at the valley is low in salinity is utilized, the valley is selected to pump water, a large amount of inexhaustible water sources can be obtained through little filtration, and the problem that no water can be pumped due to the lack of water for residents or dry and dry seasons in a traditional pumped storage power station is solved; guarantee is provided for pumped storage, and a water storage reservoir with extremely high requirements does not need to be built.

Description

Technical Field

[0001] This invention relates to the field of hydropower generation equipment technology, specifically a novel pumped storage power station power generation combination system. Background Technology

[0002] Current traditional pumped-storage hydroelectric power stations typically consist of two reservoirs with a certain elevation difference, utilizing the time difference to mitigate peak demand. Water is pumped to the higher-potential reservoir during off-peak hours at night when electricity demand is high, and then released during peak hours to generate electricity. This model has several problems. During peak water demand or drought seasons, insufficient downstream water supply limits pumping capacity, rendering pumped-storage hydroelectric power generation ineffective or unusable. Furthermore, traditional pumped-storage hydroelectric power stations suffer from long construction periods and high costs. Building two reservoirs of nearly equal size is not only expensive but also requires relatively strict geological conditions. In current coastal areas, especially many islands with relatively developed economies and large electricity consumption, water and electricity shortages are common. Water is diverted across the sea, and electricity is primarily generated from thermal power, with a small amount utilizing nuclear power. Thermal power consumes energy irreversibly, and while nuclear power technology is very safe, the construction of nuclear power plants has often drawn strong reactions from local residents. Given the current severe energy shortages in coastal areas and the wishes of local residents, a new type of pumped-storage hydroelectric power station is needed.

[0003] This case arose in order to resolve the aforementioned issues. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] In view of the shortcomings of the prior art, the present invention provides a novel pumped storage power station power generation combination system, which solves the problems mentioned in the background art.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: a novel pumped-storage power station power generation system, comprising a pumped-storage system and a power generation system. The pumped-storage system includes a discharge pipe, a reservoir, a pumping pipe, a three-stage reservoir, a two-stage reservoir, and a first-stage reservoir. One end of the discharge pipe is connected to a reservoir located on a mountaintop, and the other end is connected to a power plant. Multiple discharge and pumping pipes are provided. The multi-stage reservoirs are located at adjacent mountaintops. The power generation system includes a generator set, an impeller, a connecting shaft, and a gearbox. A connecting pipe is provided inside the generator set, and one end of the connecting pipe is connected to seawater.

[0008] Preferably, the multi-stage water storage tank is divided into a primary water storage tank, a secondary water storage tank, and a tertiary water storage tank. The multi-stage water storage tanks are built in a staggered manner from the top of the mountain downwards. The primary water storage tank is connected to the end of a water discharge pipe and the end of a water pumping pipe.

[0009] Preferably, the water discharge pipe and the water pumping pipe connected to the primary water storage tank pass through the secondary water storage tank and the tertiary water storage tank respectively from top to bottom, and the ends of the two water pumping pipes are respectively connected to the valley.

[0010] Preferably, the valley is located in a mountain hollow between two mountains, a reservoir is set up in the hollow, and a water pipeline is provided in the middle of the valley to connect to seawater.

[0011] Preferably, the generator set includes a wind-powered water pumping device, an impeller is provided at the end of the wind-powered water pumping device, a connecting shaft is connected to the end of the impeller, and a gearbox is fixed on the connecting shaft.

[0012] Preferably, the water pump is installed in the water pumping pipeline, and the power plant and generator set are located above sea level.

[0013] Preferably, the generator set consists of multiple generator sets with water turbines running in parallel.

[0014] (III) Beneficial Effects

[0015] After adopting the above technical solution, the present invention has the following advantages compared with the prior art: The present invention provides a novel pumped storage power station power generation system that takes advantage of the low salinity of seawater in the valley. It selects alluvial valleys for pumping water, requiring only the digging of ponds and wells, and minimal filtration to obtain an inexhaustible large water source. This solves the problem of traditional pumped storage power stations having no water to pump due to residential water use or drought during the dry season, providing a favorable guarantee for pumped storage. Moreover, it does not require the construction of highly demanding reservoirs; it only requires digging ponds, pools, or wells underground. At the same time, it utilizes the drop in elevation to construct terraced reservoirs, which not only filters the salinity of the pumped seawater but also reduces the safety problems caused by dam failures due to the construction of large dams. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the generator set of the present invention.

[0018] In the diagram: 1. Seawater; 2. Power plant; 3. Water discharge pipe; 4. Reservoir; 5. Pumping pipe; 6. Valley; 7. Tertiary reservoir; 8. Secondary reservoir; 9. Primary reservoir; 10. Generator set; 11. Connecting pipe; 12. Impeller; 13. Connecting shaft; 14. Gearbox. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0020] like Figure 1-2 The diagram shows a novel pumped-storage power station power generation system, comprising a pumped-storage system and a power generation system. The pumped-storage system includes a discharge pipe 3, a reservoir 4, a pumping pipe 5, a three-stage reservoir 7, a two-stage reservoir 8, and a first-stage reservoir 9. One end of the discharge pipe 3 connects to the reservoir 4 located on a mountaintop, and the other end connects to the power plant 2. Multiple discharge pipes 3 and pumping pipes 5 are provided. The multi-stage reservoirs are located at adjacent mountaintops. This pumped-storage power station power generation system is located on an island, which is surrounded by water on all sides or bordered by water on one side. Many islands have various valleys or coves beneath them, which are also where mountain streams flow into the sea. The junction of mountains and sea often forms river valleys or coves, which are relatively wide and of varying sizes. The geological strata are mostly alluvial. Excavation down to the lowest tide level reveals abundant water sources, which, although salty, are largely desalinated. Pumped storage power stations utilize this condition, selecting alluvial valleys and gullies, and assessing the scale of water seepage. They only need to dig ponds and wells and pump water, requiring only minimal filtration, to have an inexhaustible water source. This solves the problem of traditional pumped storage power stations being unable to pump water due to residential water use or drought during the dry season, providing a favorable guarantee for pumped storage. At the same time, the pumped water source is seawater filtered through natural gravel layers, which not only provides the most basic guarantee for continuous pumped storage, but also eliminates the need to build extremely demanding reservoirs; it only requires digging ponds or wells underground.

[0021] The power generation system includes a generator set 10, an impeller 12, a connecting shaft 13, and a gearbox 14. The generator set 10 is equipped with a connecting pipe 11, one end of which is connected to seawater 1. The connecting pipe 11 is connected to a hydroelectric generator, which can generate electricity using seawater resources. At the same time, the impeller 12 on it can generate electricity using wind resources on the island, thereby making better use of geographical resource advantages.

[0022] The multi-stage reservoir consists of a primary reservoir (9), a secondary reservoir (8), and a tertiary reservoir (7). These reservoirs are built in a staggered fashion from the mountaintop downwards. The primary reservoir (9) is connected to the end of a water discharge pipe (3) and a water pumping pipe (5). The reservoirs are built on mountain peaks with significant elevation differences and close proximity. This tiered construction filters salinity and provides water storage or reservoirs for the island's fragile ecosystem. Due to the island's monsoon climate, most organisms are alkaline plants, which are completely harmless to the island. Therefore, utilizing the mountain shape to construct multi-stage reservoirs, and building terraced reservoirs based on elevation differences, not only filters the salinity of the pumped seawater but also reduces the safety issues caused by dam failures from the construction of large dams. Furthermore, the elevation difference of tens to hundreds of meters between the island's ground and the mountainside is common, fully meeting the potential energy requirements for pumped water storage.

[0023] The drain pipe 3 and pumping pipe 5 connected to the primary reservoir 9 pass through the secondary reservoir 8 and the tertiary reservoir 7 from top to bottom, respectively. The ends of the two pumping pipes 5 are connected to the valley 6. The pumping pipes 5 draw seawater with low salinity from the valley, filter it simply, and then put it into the reservoir. Since the valley 6 is located in a mountain valley, it is not far from the mountaintop, so pumping water does not consume too many resources. When generating electricity, the water in the reservoir 4 is discharged to the power plant located at the foot of the island through the drain pipe 3, so as to generate electricity through high potential energy.

[0024] Valley 6 is located in a valley between two mountains, with a reservoir in the valley. A water pipeline connects Valley 6 to Seawater 1, allowing seawater to be drawn directly from Seawater 1 into the reservoir when necessary. This pumped-storage power generation system utilizes naturally desalinated and filtered seawater, drawing water and materials locally, unaffected by water sources, potential energy, or long-distance power transmission costs. It does not damage the ecosystem and can even maintain or preserve it. Furthermore, by taking advantage of off-peak electricity at night, it can improve the fragile ecosystem of the island due to water scarcity, solve the noise and maintenance cost problems of wind power, and free up the large amount of limited and precious land resources required for building solar power generation.

[0025] The generator set 10 includes a wind-powered water pumping device. An impeller 12 is provided at the end of the wind-powered water pumping device. A connecting shaft 13 is connected to the end of the impeller 12. A gearbox 14 is fixed on the connecting shaft 13.

[0026] A water pump is installed in the water pumping pipe 5, and the power plant 2 and generator set 10 are located above the sea level of the seawater 1.

[0027] Generator set 10 consists of multiple generator sets with water turbines running in parallel.

[0028] The above-described embodiments are provided for illustrative purposes. Based on the above description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this utility model is not limited to the contents of the specification; its protection scope must be determined according to the claims.

Claims

1. A novel pumped-storage power station power generation combination system, comprising a pumped-storage system and a power generation system, characterized in that: The pumping and storage system includes a water discharge pipe (3), a water storage tank (4), a pumping pipe (5), a three-stage water storage tank (7), a two-stage water storage tank (8), and a first-stage water storage tank (9). One end of the water discharge pipe (3) is connected to the water storage tank (4) located on the mountaintop, and the other end is connected to the power plant (2). Multiple water discharge pipes (3) and pumping pipes (5) are provided. The multi-stage water storage tanks are located at adjacent mountaintops. The power generation system includes a generator set (10), an impeller (12), a connecting shaft (13), and a gearbox (14). The generator set (10) is provided with a connecting pipe (11), one end of which is connected to seawater (1).

2. The novel pumped-storage power station power generation system according to claim 1, characterized in that: The multi-stage water storage tank is divided into a first-stage water storage tank (9), a second-stage water storage tank (8), and a third-stage water storage tank (7). The multi-stage water storage tanks are built in a staggered manner from the top of the mountain downwards. The first-stage water storage tank (9) is connected to the end of the water discharge pipe (3) and the end of the water pumping pipe (5).

3. A novel pumped-storage power station power generation system according to claim 2, characterized in that: The water discharge pipe (3) and water pumping pipe (5) connected to the primary water storage tank (9) pass through the secondary water storage tank (8) and the tertiary water storage tank (7) from top to bottom, respectively, and the ends of the two water pumping pipes are respectively connected to the valley (6).

4. A novel pumped-storage power station power generation system according to claim 3, characterized in that: The valley (6) is located in a mountain hollow between two mountains. A water storage pool is set up in the mountain hollow. A water pipe is set up in the middle of the valley (6) to connect to seawater (1).

5. A novel pumped-storage power station power generation system according to claim 1, characterized in that: The generator set (10) includes a wind-powered water pumping device. The wind-powered water pumping device has an impeller (12) at its end. The impeller (12) is connected to a connecting shaft (13) at its end. A gearbox (14) is fixed on the connecting shaft (13).

6. A novel pumped-storage power station power generation system according to claim 1, characterized in that: The pumping pipe (5) is equipped with a water pump, and the power plant (2) and generator set (10) are located above the sea level of the seawater (1).

7. A novel pumped-storage power station power generation system according to claim 1, characterized in that: The generator set (10) consists of multiple generator sets with water turbines running in parallel.

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