Pumped storage and gravity energy storage power generation system
By adopting pumped energy storage and gravity energy storage power generation systems in coastal areas, and using the combination of motor generators and vertical shafts, the problems of high terrain requirements and high construction difficulty are solved, and efficient energy storage and power generation are achieved to adapt to different terrain types. , simplifies installation of facilities.
Patent Information
- Application Number
- CN202411516083.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-29
- Publication Date
- 2025-01-17
AI Technical Summary
The existing energy storage technology is difficult to adapt to the terrain requirements in coastal areas, and the construction is difficult, resulting in a low utilization rate of new energy power.
The pumped energy storage and gravity energy storage power generation system is adopted, including motor generators, vertical shafts and reversible water pump turbines. Through the coordination of gravity blocks and steel cables, water improvement and energy storage are achieved, reducing the difficulty of building a facility, and through the longitudinal structure. Set up inside the mountain to reduce construction complexity.
It improves power generation efficiency, simplifies the installation and use of devices, adapts to different terrain types, and realizes reliable energy storage and power generation functions.
Smart Images
Figure CN119321386A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of energy storage technology, and in particular to a pumped storage and gravity energy storage power generation system. Background Art
[0002] my country's new energy sources such as wind and solar energy are mainly distributed in the northwest region. Among them, solar power generation is mainly concentrated in the daytime, but the actual power load is mainly distributed in the southeast coastal area, and the ratio of power consumption at night is even greater. Therefore, this phenomenon has caused a strong time and space mismatch between the production and consumption of new energy power. At the same time, the volatility of new energy power generation is also large due to climatic conditions, and the phenomenon of wind and power abandonment is relatively serious, resulting in low utilization of new energy power. Therefore, some mountainous areas began to use the height difference of the mountain to build water storage power stations, and divert water to high places through peak power consumption. When electricity is used, it is used in conjunction with turbines to generate electricity to achieve power supply during peak power consumption. However, this energy storage method often requires the construction of large-capacity reservoirs upstream and downstream, which has high requirements for terrain and is difficult to construct, so it cannot be constructed and used in coastal areas. Summary of the invention
[0003] The purpose of the present invention is to provide a pumped storage and gravity energy storage power generation system, which solves the technical problems in the prior art that the topography requirements are high and the construction of related facilities is difficult, and achieves the technical effect of being able to adapt to different terrain types and reducing the difficulty of constructing related facilities.
[0004] In order to achieve the above-mentioned object of the invention, the technical solution adopted by the present invention is:
[0005] A pumped storage and gravity energy storage power generation system, comprising an electric generator, a shaft and a reversible water pump turbine, wherein a gantry is fixed at the lower end of the electric generator, a winch is provided on one side of the electric generator, a speed change gear box is fixed on the side of the winch close to the electric generator, a speed change gear set is rotatably connected inside the speed change gear box, one end of the speed change gear set is connected to the rotating shaft of the winch, and the other end is connected to the rotating shaft of the electric generator through transmission, the shaft is located directly below the winch, and the shaft The interior of the shaft has a cavity, a gravity block is arranged inside the cavity, the weight block is cylindrical in shape, the diameter of the weight block is smaller than the inner diameter of the shaft, a connecting structure is fixed to the upper end of the weight block, a steel cable is fixed to the upper end of the connecting structure, the steel cable is wound and fixedly connected with a winch, the reversible pump turbine is located below the shaft, one end opening of the reversible pump turbine is provided with a pressure connecting pipe connected with the shaft, and the end of the reversible pump turbine away from the shaft is provided with a tailwater pipe connected with a water reservoir.
[0006] As an improvement, the electric generator, shaft and reversible pump-turbine are provided in two groups for alternating power generation, the gantry is erected at the upper end of the mountain, the shaft is erected inside the mountain, and the water storage capacity of the reservoir is three times that of a single shaft.
[0007] As an improvement, a steel cable cleaning structure is provided on one side of the gantry, and the steel cable cleaning structure is fixedly connected to the gantry by bolts. The steel cable cleaning structure is located directly below the winch, and a brush is fixedly mounted on the inner side of the steel cable cleaning structure, and the steel cable cleaning structure is used to clean the steel cable.
[0008] As an improvement, the outer side of the vertical shaft is provided with a reinforcement layer, and the inner side is provided with a smooth steel plate layer. The upper and lower side edges of the gravity block are provided with arc chamfers, and the inner side of the gravity block is provided with a cavity. The lower end of the gravity block is provided with a water filling valve, and the upper end of the gravity block is provided with an exhaust valve, and the lower end of the exhaust valve is connected to the cavity of the gravity block.
[0009] As an improvement, one end of the reversible pump turbine is provided with a flow meter, the connection between the pressure connecting pipe and the shaft is provided with a control valve, and the material of the pressure connecting pipe is metal.
[0010] As an improvement, the connection between the tailwater pipe and the water reservoir is provided with a filtering structure, and the filtering structure is used to intercept debris in the water reservoir from entering the reversible pump turbine and the shaft.
[0011] The beneficial effects of the present invention are as follows: by arranging an electric generator and a gravity block, energy can be stored by lifting the gravity block, and it can be released to generate electricity when power is needed; by arranging a vertical shaft and a reversible water pump turbine, water can be lifted to a high place for energy storage, and the gravity block can also be assisted in lifting, thereby realizing water storage and energy generation, improving the overall power generation efficiency; and by arranging the longitudinal structure within the mountain, the construction difficulty is greatly reduced, and the installation and use of the device are convenient. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a structural schematic diagram of a pumped storage and gravity energy storage power generation system of the present invention.
[0013] In the figure: 1. electric generator; 2. speed change gear box; 3. capstan; 4. gantry; 5. steel cable cleaning structure; 6. vertical shaft; 7. steel cable; 8. connecting structure; 9. gravity block; 10. exhaust valve; 11. water filling valve; 12. pressure connecting pipe; 13. reversible pump turbine; 14. tailwater pipe; 15. reservoir. DETAILED DESCRIPTION
[0014] In order to make the content of the present invention more clearly understood, the technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. The same parts are represented by the same figure marks. It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the following description refer to the directions in the drawings, and the words "inside" and "outside" refer to the directions toward or away from the geometric center of a specific component, respectively.
[0015] like Figure 1 As shown, a pumped storage and gravity energy storage power generation system includes an electric generator 1, a shaft 6 and a reversible pump turbine 13. A gantry 4 is fixed to the lower end of the electric generator 1. A winch 3 is provided on one side of the electric generator 1. A speed change gear box 2 is fixed on the side of the winch 3 close to the electric generator 1. A speed change gear set is rotatably connected inside the speed change gear box 2. One end of the speed change gear set is connected to the rotating shaft of the winch 3 through transmission, and the other end is connected to the rotating shaft of the electric generator 1 through transmission. The shaft 6 is located directly below the winch 3. The interior of the shaft 6 The hollow cavity is provided with a gravity block 9, which is cylindrical in shape, and has a diameter smaller than the inner diameter of the shaft 6. A connection structure 8 is fixed to the upper end of the gravity block 9, and a steel cable 7 is fixed to the upper end of the connection structure 8. The steel cable 7 is wound and fixedly connected with the winch 3. The reversible pump turbine 13 is located below the shaft 6. One end of the reversible pump turbine 13 is opened with a pressure connection pipe 12 connected to the shaft 6. The end of the reversible pump turbine 13 away from the shaft 6 is connected with a tailwater pipe 14 and a reservoir 15. The shaft 6 can confirm its diameter and depth according to the terrain of the mountain, and the gravity block 9 can be adjusted to different sizes according to the diameter of the shaft 6.
[0016] The electric generator 1, the shaft 6 and the reversible pump turbine 13 are provided in two groups for alternating power generation. The gantry 4 is erected at the upper end of the mountain, and the shaft 6 is erected inside the mountain. The water storage capacity of the water reservoir 15 is three times the water storage capacity of a single shaft 6. A steel cable cleaning structure 5 is provided on one side of the gantry 4. The steel cable cleaning structure 5 is fixedly connected to the gantry 4 by bolts. The steel cable cleaning structure 5 is located directly below the winch 3. A brush is fixedly sleeved on the inner side of the steel cable cleaning structure 5. The steel cable cleaning structure 5 is used to clean the steel cable 7. The shaft 6 has a reinforcement layer on the outside and a smooth steel plate layer on the inside. The upper and lower side edges of the weight block 9 have arc chamfers. The weight block 9 has a cavity inside. The lower end of the weight block 9 has a water filling valve 11. The upper end of the weight block 9 has an exhaust valve 10. The lower end of the exhaust valve 10 is connected to the cavity of the weight block 9. One end of the reversible pump turbine 13 is provided with a flow meter, and the connection between the pressure connecting pipe 12 and the shaft 6 is provided with a control valve, and the material of the pressure connecting pipe 12 is metal. The connection between the tailwater pipe 14 and the reservoir 15 is provided with a filtering structure, and the filtering structure is used to intercept the debris in the reservoir 15 from entering the reversible pump turbine 13 and the shaft 6. The electric generator 1 and the reversible pump turbine 13 can be equipped with a remote signal control module to facilitate the unified control and use of multiple power generation systems.
[0017] When storing energy, the electric generator 1 will drive the winch 3 to rotate through the speed change gear box 2, thereby lifting the weight block 9 to the wellhead of the shaft 6. At the same time, the reversible pump turbine 13 will pump water from the reservoir 15 and send the water into the shaft 6 through the pressure connection pipe 12 to assist the lifting of the weight block 9. When the weight block 9 reaches the specified position and the water level reaches the warning line, the reversible pump turbine 13 stops running. When power generation is required, the valves related to the reversible pump turbine 13 are opened, and the water stored in the shaft 6 begins to be output to the reversible pump turbine 13 through the pressure connection pipe 12. At this time, the reversible pump turbine 13 begins to be driven to generate electricity, and then the locking structure of the winch 3 is opened to release the weight block 9. The winch 3 will rotate accordingly and drive the speed change gear box 2 to transmit. The electric generator 1 will generate electricity at this time. The two sets of energy storage devices need to run back and forth alternately to complete the energy storage and power generation tasks.
[0018] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.
Claims
1. A pumped storage and gravity energy storage power generation system, characterized in that: The invention comprises an electric generator (1), a shaft (6) and a reversible water pump turbine (13), wherein a gantry (4) is fixed at the lower end of the electric generator (1), a capstan (3) is provided on one side of the electric generator (1), a speed change gear box (2) is fixed on the side of the capstan (3) close to the electric generator (1), a speed change gear set is rotatably connected inside the speed change gear box (2), one end of the speed change gear set is connected to the rotating shaft of the capstan (3), and the other end is connected to the rotating shaft of the electric generator (1), the shaft (6) is located directly below the capstan (3), the shaft (6) has a cavity inside, and the cavity is A gravity block (9) is provided, the gravity block (9) is cylindrical in shape, the diameter of the gravity block (9) is smaller than the inner diameter of the shaft (6), a connection structure (8) is fixed to the upper end of the gravity block (9), a steel cable (7) is fixed to the upper end of the connection structure (8), the steel cable (7) is wound and fixedly connected to a winch (3), the reversible pump turbine (13) is located below the shaft (6), one end of the reversible pump turbine (13) is opened with a pressure connection pipe (12) and is connected to the shaft (6), and the end of the reversible pump turbine (13) away from the shaft (6) is provided with a tailwater pipe (14) and is connected to a water reservoir (15).
2. A pumped storage and gravity energy storage power generation system according to claim 1, characterized in that: The electric generator (1), the vertical shaft (6) and the reversible pump turbine (13) are arranged in two groups for alternately generating electricity. The gantry (4) is erected at the upper end of the mountain, the vertical shaft (6) is erected inside the mountain, and the water storage capacity of the water reservoir (15) is three times the water storage capacity of a single vertical shaft (6).
3. A pumped storage and gravity energy storage power generation system according to claim 2, characterized in that: A steel cable cleaning structure (5) is provided on one side of the gantry (4). The steel cable cleaning structure (5) is fixedly connected to the gantry (4) by bolts. The steel cable cleaning structure (5) is located directly below the winch (3). A brush is fixedly sleeved on the inner side of the steel cable cleaning structure (5). The steel cable cleaning structure (5) is used to clean the steel cable (7).
4. A pumped storage and gravity energy storage power generation system according to claim 1, characterized in that: The shaft (6) has a reinforcement layer on the outside and a smooth steel plate layer on the inside. The upper and lower side edges of the gravity block (9) have arc chamfers. The gravity block (9) has a cavity inside. The lower end of the gravity block (9) has a water filling valve (11). The upper end of the gravity block (9) has an exhaust valve (10). The lower end of the exhaust valve (10) is connected to the cavity of the gravity block (9).
5. A pumped storage and gravity energy storage power generation system according to claim 1, characterized in that: One end of the reversible water pump turbine (13) is provided with a flow meter, the connection between the pressure connecting pipe (12) and the shaft (6) is provided with a control valve, and the material of the pressure connecting pipe (12) is metal.
6. A pumped storage and gravity energy storage power generation system according to claim 1, characterized in that: The connection between the tailwater pipe (14) and the water reservoir (15) is provided with a filtering structure, and the filtering structure is used to intercept debris in the water reservoir (15) from entering the reversible pump turbine (13) and the vertical shaft (6).