Power supply system using water level fall
By adopting a multi-storage tank and siphon structure in the small hydropower system, the hydropower generator unit is driven by the water level difference. Combined with water level detection and valve control, the problems of insufficient power generation capacity and continuity are solved, and the system achieves complementarity with solar photovoltaic and offshore wind power and efficient operation during system maintenance.
Patent Information
- Application Number
- CN202520112781.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-17
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2035-01-17
AI Technical Summary
Existing small hydropower technologies are insufficient in terms of power generation capacity and sustainability, making it difficult to effectively complement solar photovoltaic and offshore wind power. Furthermore, system maintenance often leads to overall shutdowns.
The power supply system, which adopts a multi-storage tank and siphon structure, drives the hydroelectric generator unit through the water level difference. Combined with water level detectors and valve control, it achieves efficient power generation and reduces downtime during system maintenance.
It has increased power generation capacity and sustainability, achieved complementary functions with solar photovoltaic and offshore wind power, reduced downtime during system maintenance, and improved system reliability and efficiency.
Smart Images
Figure CN223781543U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of small hydropower technology, specifically relating to a power supply system that utilizes water level differences. Background Technology
[0002] Small hydropower generation utilizing irrigation canals or existing water conservancy facilities is a reuse of existing water sources. Suitable locations for small hydropower installations include water supply systems (tap water systems), sewage treatment systems (sewage treatment systems), agricultural water (agricultural irrigation canal systems), river water (first and second level rivers), tailwater (adjustment ponds, discharge ponds, tailwater channels, etc.), and underground water (barrier dams, underground water sources), etc. It is currently the most known method of power generation with the cleanest energy conditions and the least impact on the environment and ecology. It is a truly green energy source with sustainable and regenerative benefits. Utility Model Content
[0003] This utility model is a power supply system that utilizes the difference in water level. The advantages of small hydropower generation are as follows: (1) Small hydropower generation has a high capacity factor (usually >40%) and a long average annual operating time. When water resources are sufficient, small hydropower generation devices can generate electricity 24 hours a day, which complements and assists solar photovoltaic and offshore wind power, making up for the time and geographical deficiencies of intermittent energy sources such as photovoltaic and wind power, and is one of the best energy solutions. (2) Small hydropower generation has the characteristics of distributed energy. Common small hydropower generator sets generate electricity by utilizing the potential energy generated by the difference in water head. Multiple flow-velocity small hydropower generator sets are integrated into an array to supply power, accumulating small amounts into large amounts.
[0004] This utility model belongs to the category of drop-type small hydropower generation. The principle of drop-type small hydropower generation mainly utilizes the difference in terrain elevation or pipelines with elevation differences. Water from a higher elevation flows downwards, converting the water's potential energy into kinetic energy (mechanical energy). This kinetic energy is then used by a turbine to drive a generator, converting the kinetic energy into electrical energy to generate electricity. Figure 2 As shown, the estimated power generation of small hydropower can be calculated using the water flow energy formula: Theoretical power generation due to water level difference P = ηxρxgxQxΔh, where P: power (kW), η: turbine + generator conversion efficiency, and ρ: fluid density (kg / m³). 3 g: acceleration due to gravity (m / s²) 2 Q: flow rate (cms), Δh: water level drop (m).
[0005] A power supply system utilizing water level difference, comprising: a first water storage tank connected to a first water supply pipe; a first hydroelectric generator installed on the first water supply pipe at a distance from the first water storage tank at a first water level difference; the first water supply pipe including a first siphon pipe with a rise height less than the first water level difference; one end of the first siphon pipe being a first outlet; water from the first water storage tank being injected into a second water storage tank through the first outlet; the second water storage tank being connected to a second water supply pipe at a distance from the second water storage tank at a second water level difference. A second hydraulic generator is installed at a distance from the second water level difference. The second water supply pipe includes a second siphon pipe with a rising height less than the second water level difference. One end of the second siphon pipe is a second outlet. Water from the second water storage tank is injected into a third water storage tank through the second outlet. The third water storage tank is connected to a third water supply pipe. A third hydraulic generator is installed on the third water supply pipe at a distance from the third water level difference of the third water storage tank. The second water supply pipe includes a third siphon pipe with a rising height less than the third water level difference. One end of the third siphon pipe is a third outlet.
[0006] Water from the first water storage tank flows into the first water supply pipe, driving the first hydroelectric generator. The water then flows into the second water storage tank through the first outlet. Water from the second water storage tank flows into the second water supply pipe, driving the second hydroelectric generator. The water then flows into the third water storage tank through the second outlet. Water from the third water storage tank flows into the third water supply pipe, driving the third hydroelectric generator. The water then flows out through the third outlet. Attached Figure Description
[0007] Figure 1 This is a schematic diagram of a power supply system that utilizes the water level difference on a hillside.
[0008] Figure 2 This is a schematic diagram of water flow energy;
[0009] Figure 3 This is a schematic diagram of a power supply system that utilizes the difference in water level.
[0010] Figure 4 This is a schematic diagram of a power supply system utilizing the difference in water level.
[0011] Figure 5 This is a schematic diagram of a multi-segment power supply system that utilizes water level differences and includes a siphon.
[0012] Figure 6 This is a schematic diagram of a power supply system that utilizes the water level difference, including water pipes for water allocation;
[0013] Figure 7 This is a schematic diagram of an embodiment with a water tank cover and a funnel-shaped connecting pipe;
[0014] Figure labeling: 5-Water flow; 6-Valve; 7-Water level detector; 10-Water tank; 11-First water tank; 12-Second water tank; 13-Third water tank; 14-Fourth water tank; 20-Water supply pipe; 21-First water supply pipe; 22-Second water supply pipe; 23-Third water supply pipe; 24-Fourth water supply pipe; 30-Hydropower generator; 31-First hydropower generator; 32-Second hydropower generator; 33-Third hydropower generator; 34-Fourth hydropower generator Generator; 40-Water level difference; 41-First water level difference; 42-Second water level difference; 43-Third water level difference; 44-Fourth water level difference; 50-Outlet; 51-First outlet; 52-Second outlet; 53-Third outlet; 81-First regulating water pipe; 82-Second regulating water pipe; 91-Water tank cover; 92-Funnel-shaped connecting pipe; 201-Siphon pipe; 211-First siphon pipe; 212-Second siphon pipe; 213-Third siphon pipe. Detailed Implementation
[0015] The following description, in conjunction with the accompanying drawings and component reference numbers, provides a more detailed account of the embodiments of this utility model, enabling those skilled in the art to implement it after studying this specification. It should be understood that some of the display methods in these embodiment drawings do not represent a limitation of this utility model.
[0016] This utility model discloses a power supply system that utilizes water level differences on hillsides, such as... Figure 1 As shown, the power supply system utilizing water level difference includes multiple water storage tanks 10, multiple water supply pipes 20, multiple hydroelectric generators 30, multiple water outlets 50, and multiple siphon pipes 201. The system structure includes a water supply pipe 20 introducing a water flow 5, which is then injected into the water storage tank 10 at the first highest position through a water outlet 50 of a siphon pipe 201. The water in the water storage tank 10 at the first highest position then impacts the hydroelectric generator 30 through the water supply pipe 20. After impacting the hydroelectric generator 30, the water flows back into the siphon pipe 201 through the water supply pipe 20, and through the siphon principle, the water is injected into the water storage tank 10 at the second highest position through the water outlet 50. The position of the water storage tank 10 at the second highest position is lower than the position of the hydroelectric generator 30 in the water storage tank 10 at the first highest position. The above structure is repeated by connecting these water storage tanks 10 in series.
[0017] This utility model discloses a power supply system utilizing water level differences, such as... Figure 3As shown, the power supply system utilizing water level difference includes: a first water storage tank 11 connected to one end of a first water supply pipe 21, the other end of the first water supply pipe 21 being a first water outlet 51; water from the first water storage tank 11 is injected into a second water storage tank 12 through the first water outlet 51; a first hydroelectric generator 31 is installed on the first water supply pipe 21 at a distance of a first water level difference 41 from the first water storage tank 11; the second water storage tank 12 is connected to one end of a second water supply pipe 22, the other end of the second water supply pipe 22 being... A second water outlet 52 is provided, through which water from the second water storage tank 12 is injected into a third water storage tank 13. A second water supply pipe 22 is installed at a distance of a second water level drop 42 from the second water storage tank 12. The third water storage tank 13 is connected to one end of a third water supply pipe 23, the other end of which is a third water outlet 53. A third water supply pipe 23 is installed at a distance of a third water level drop 43 from the third water storage tank 13.
[0018] Water from the first water storage tank 11 flows into the first water supply pipe 21, driving the first hydroelectric generator 31 to operate. The water then flows into the second water storage tank 12 through the first outlet 51. Water from the second water storage tank 12 flows into the second water supply pipe 22, driving the second hydroelectric generator 32 to operate. The water then flows into the third water storage tank 13 through the second outlet 52. Water from the third water storage tank 13 flows into the third water supply pipe 23, driving the third hydroelectric generator 33 to operate. The water then flows out through the third outlet 53.
[0019] The power generation from the water level difference generated by the first, second, and third hydroelectric generators 31, 32, and 33 is P = ηxρxgxQxΔh, where: P: power (kW), η: turbine + generator conversion efficiency, ρ: fluid density (kg / m³). 3 g: acceleration due to gravity (m / s²) 2 Q: flow rate (cms), Δh: water level drop of 40 (m).
[0020] Each of the first, second, and third water storage tanks 11, 12, and 13 includes a water level detector 7, which detects the water level height in the tank. Each of these water storage tanks 11, 12, and 13 corresponds to the water level detector 7.
[0021] Each of the first, second, and third water storage tanks 11, 12, and 13 is connected to the first, second, and third water supply pipes 21, 22, and 23, and a corresponding valve 6 is installed between them. The valve 6 controls the flow of water from the water storage tanks into the water supply pipes. Each of these water storage tanks 11, 12, and 13 corresponds to one valve 6.
[0022] This utility model provides a power supply system that utilizes water level difference. The system also includes a control device (not shown) connected to the water level detector 7 and the valve 6. The control device controls the valve 6 to open or close according to the water level detected by the water level detector 7 in these water storage tanks.
[0023] In one embodiment, when the water level detector 7 detects that the water level in these water storage tanks is lower than a first threshold, the valve 6 corresponding to these water storage tanks is closed.
[0024] In one embodiment, when the water level detector 7 detects that the water level in these water storage tanks is higher than a second threshold, the valve 6 corresponding to these water storage tanks is opened.
[0025] The first, second, and third hydroelectric generators 31, 32, and 33 are connected to an external device, which includes a lighting device, a water pump, an energy storage device, etc.
[0026] One embodiment is a power supply system utilizing a water level difference, wherein the water level difference is 40 mm. Figure 4 As shown, the first water level drop 41 is less than the second water level drop 42, and the second water level drop 42 is less than the third water level drop 43.
[0027] In one embodiment, the first water outlet 51 faces the second water storage tank 12, and the second water outlet 52 faces the third water storage tank 13.
[0028] One embodiment is a power supply system that utilizes water level differences, such as... Figure 5As shown, the power supply system utilizing water level difference includes: a first water storage tank 11 connected to a first water supply pipe 21; a first hydroelectric generator 31 installed on the first water supply pipe 21 at a distance of a first water level difference 41 from the first water storage tank 11; the first water supply pipe 21 includes a first siphon pipe 211 with a rising height less than the first water level difference 41; one end of the first siphon pipe 211 is a first outlet 51; water from the first water storage tank 11 is injected into a second water storage tank 12 through the first outlet 51; the second water storage tank 12 is connected to a second water supply pipe 22; a second hydroelectric generator 32 is installed on the second water supply pipe 22 at a distance of a second water level difference 42 from the second water storage tank 12; the second water supply pipe 22 includes a second siphon pipe 21 with a rising height less than the second water level difference 42. 2. One end of the second siphon pipe 212 is a second outlet 52. Water from the second water storage tank 12 is injected into a third water storage tank 13 through the second outlet 52. The third water storage tank 13 is connected to a third water supply pipe 23. A third hydroelectric generator 33 is installed on the third water supply pipe 23 at a distance of a third water level difference 43 from the third water storage tank 13. The second water supply pipe 23 includes a section of a third siphon pipe 213 with a rising height less than the third water level difference 43. One end of the third siphon pipe 213 is a third outlet 53. Water from the third water storage tank 13 is injected into a fourth water storage tank 14 through the third outlet 53. The fourth water storage tank 14 is connected to a fourth water supply pipe 24. A fourth hydroelectric generator 34 is installed on the fourth water supply pipe 24 at a distance of a fourth water level difference 44 from the fourth water storage tank 14.
[0029] This utility model can be connected in series with multiple sections of the aforementioned power supply system utilizing water level differences, such as... Figure 3 The diagram shows a three-section power supply system utilizing water level differences, such as... Figure 5 The diagram shows a four-section power supply system that utilizes water level differences.
[0030] One embodiment is a power supply system that utilizes water level differences, such as... Figure 6As shown, the power supply system utilizing water level difference includes: a first water storage tank 11 connected to one end of a first water supply pipe 21, the other end of the first water supply pipe 21 being a first water outlet 51; water from the first water storage tank 11 is injected into a second water storage tank 12 through the first water outlet 51; a first hydroelectric generator 31 is installed on the first water supply pipe 21 at a distance of a first water level difference 41 from the first water storage tank 11; the second water storage tank 12 connected to one end of a second water supply pipe 22, the other end of the second water supply pipe 22 being a second water outlet 52; water from the second water storage tank 12 is injected into a third water storage tank 13 through the second water outlet 52; a second hydroelectric generator 32 is installed on the second water supply pipe 22 at a distance of a second water level difference 42 from the second water storage tank 12; the third water storage tank 13 connected to one end of a third water supply pipe 23, the other end of the third water supply pipe 23 being a third water outlet 51. 3. A third hydroelectric generator 33 is installed at a distance of a third water level difference 43 from the third water storage tank 13 on the third water supply pipe 23. The first water storage tank 11 is connected to one end of a first regulating water pipe 81, and the other end of the first regulating water pipe 81 is connected to the second water supply pipe 22. Furthermore, the first water storage tank 11 is connected to one end of a second regulating water pipe 82, and the other end of the second regulating water pipe 82 is connected to the third water supply pipe 23. A corresponding valve 6 is installed between the first, second, and third water storage tanks 11, 12, and 13 and the first, second, and third water supply pipes 21, 22, and 23. A corresponding valve 6 is also installed between the first water storage tank 11 and the first and second regulating water pipes 81 and 82. A control device is connected to these valves 6, and the control device controls these valves 6 to allow water from the first water storage tank 11 to flow into the first, second, and third water storage tanks 11, 12, and 13.
[0031] This utility model also includes a database, which records a water level-electricity relationship diagram of the water storage levels of the first, second, and third water storage tanks 11, 12, and 13 and the power generation of the first, second, and third hydroelectric generators 31, 32, and 33. The control device controls these valves 6 according to the water level-electricity relationship diagram to maintain the water levels of the second and third water storage tanks 12 and 13 at the optimal power generation levels.
[0032] When the first hydroelectric generator 31 is undergoing maintenance due to a malfunction, the system can use the first transfer water pipe 81 to introduce water from the first water storage tank 11 into the second hydroelectric generator 32, or when the second hydroelectric generator 32 is undergoing maintenance due to a malfunction, the system can use the second transfer water pipe 82 to introduce water from the first water storage tank 11 into the third hydroelectric generator 33. Compared with the prior art, the present invention can reduce the problem of complete system shutdown during system maintenance.
[0033] One implementation example Figure 7 As shown, a water tank cover 91 is installed above the first, second, and third water storage tanks 11, 12, and 13. The water tank cover 91 is used to prevent debris from falling into these water tanks. The first, second, and third water storage tanks 11, 12, and 13 are connected to a funnel-shaped connecting pipe 92, which in turn connects to the first, second, and third water supply pipes 21, 22, and 23. The funnel-shaped connecting pipe 92 creates a drainage vortex in these water tanks, accelerating the water flow speed.
[0034] In one embodiment, an automatic cleaning device is installed in the first, second, and third water storage tanks 11, 12, and 13, which can clean the sediment in the water tanks.
[0035] The above description is merely an embodiment of this utility model and is not intended to limit the patent scope of this utility model. All equivalent implementations that vary from the content, features and spirit of this utility model should be included within the patent scope of this utility model.
Claims
1. A power supply system utilizing water level difference, the system comprising: A first water storage tank is connected to one end of a first water supply pipe, and the other end of the first water supply pipe is a first water outlet. Water from the first water storage tank is injected into a second water storage tank through the first water outlet. A first hydroelectric generator is installed on the first water supply pipe at a distance of a first water level difference from the first water storage tank. The second water storage tank is connected to one end of a second water supply pipe, and the other end of the second water supply pipe is a second water outlet. Water from the second water storage tank is injected into a third water storage tank through the second water outlet. A second hydroelectric generator is installed on the second water supply pipe at a distance from the second water level drop of the second water storage tank. The third water storage tank is connected to one end of a third water supply pipe, and the other end of the third water supply pipe is a third water outlet. A third water generator is installed on the third water supply pipe at a distance from the third water level drop of the third water storage tank. The first water storage tank is connected to one end of a first water transfer pipe, the other end of the first water transfer pipe is connected to the second water supply pipe, the first water storage tank is connected to one end of a second water transfer pipe, and the other end of the second water transfer pipe is connected to the third water supply pipe. A corresponding valve is installed between the first water storage tank and the first and second water transfer pipes.
2. The power supply system utilizing water level difference as described in claim 1, wherein the first, second, and third water storage tanks are connected to the first, second, and third water supply pipes, and each of the first, second, and third water storage tanks includes a water level detector.
3. The power supply system utilizing water level difference as described in claim 2, the system further includes a control device connected to the water level detector and the valve, the control device controlling these valves to allow water from the first water storage tank to flow into the first, second, and third water storage tanks.
4. In the power supply system utilizing water level difference as described in claim 1, a water tank cover is installed above the first, second, and third water storage tanks.
5. The power supply system utilizing water level difference as described in claim 1, wherein the first, second, and third water storage tanks are connected to a funnel-shaped connecting pipe and then connected to the first, second, and third water supply pipes.
6. A power supply system utilizing water level difference, the system comprising: A first water storage tank is connected to a first water supply pipe. A first water supply pipe is installed at a distance from the first water storage tank at a first water level difference. The first water supply pipe includes a first siphon pipe with a rising height less than the first water level difference. One end of the first siphon pipe is a first outlet. Water from the first water storage tank is injected into a second water storage tank through the first outlet. The second water storage tank is connected to a second water supply pipe. A second water generator is installed on the second water supply pipe at a distance from a second water level difference of the second water storage tank. The second water supply pipe includes a second siphon pipe with a rising height less than the second water level difference. One end of the second siphon pipe is a second water outlet. Water from the second water storage tank is injected into a third water storage tank through the second water outlet. The third water storage tank is connected to a third water supply pipe. A third water generator is installed on the third water supply pipe at a distance from the third water storage tank at a third water level difference. The second water supply pipe includes a third siphon pipe with a rising height less than the third water level difference. One end of the third siphon pipe is a third water outlet.
7. The power supply system utilizing water level difference as described in claim 6, wherein each of the first, second, and third water storage tanks includes a water level detector, and a corresponding valve is installed between each of the first, second, and third water storage tanks and the first, second, and third water supply pipes.
8. The power supply system utilizing water level difference as described in claim 7, the system further comprising a control device connected to the water level detector and the valve, the control device controlling the valve to open or close according to the water level in the water tanks detected by the water level detector.
9. The power supply system utilizing water level difference as described in claim 6, wherein a water tank cover is installed above the first, second, and third water storage tanks.
10. The power supply system utilizing water level difference as described in claim 6, wherein the first, second, and third water storage tanks are connected to a funnel-shaped connecting pipe and then connected to the first, second, and third water supply pipes.