Tidal power generation system
By designing a tidal power generation system including a work cylinder, a piston fuel tank and a power generation device, using the buoyancy and gravity at high tide and low tide for energy conversion and storage, the problem of failure to effectively utilize the water level rise energy in the prior art is solved, and the problem of improving the energy of the water level rise is improved. Power generation efficiency and energy utilization rate.
Patent Information
- Application Number
- CN202420934306.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-29
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2034-04-29
AI Technical Summary
The existing tidal power generation system only utilizes the energy generated when the water level in the sink drops, and fails to effectively utilize the energy when the water level rises, resulting in low power generation efficiency.
A tidal power generation system is designed, including a first working cylinder, a second working cylinder, a piston fuel tank and a power generation device. At high tide, the buoyancy of the first piston is used for work. At low tide, the gravity of the second piston is used for work. Through the cooperation of the hydraulic cylinder and hydraulic oil, efficient energy conversion and storage can be achieved.
It improves the energy utilization rate of the tidal power generation system and realizes clean, low-carbon, renewable tidal power generation, which is stable and reliable.
Smart Images
Figure CN222436504U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of power generation, in particular to a tidal power generation system. Background Art
[0002] With the acceleration of industrialization and the continuous growth of population, the consumption of traditional energy is becoming more and more rapid, and the problems of environmental pollution and resource depletion are becoming increasingly prominent. In this context, new energy has emerged, and with its clean and renewable characteristics, it has become a key force in promoting sustainable social development. With the rapid development of my country's national economy, the supply of electricity has increased dramatically, thereby increasing the consumption of coal. Due to its low energy conversion rate and high environmental pollution, coal will be gradually replaced in the future development.
[0003] Tidal power generation is a way of generating electricity by converting potential energy into kinetic energy and then into electrical energy from the water level difference between full and low tides. Seawater tides are the process of sea level rising and falling due to the gravitational pull of the moon. The tidal energy caused by the gravitational pull of the moon is an inexhaustible clean energy, and it is not affected by other factors such as climate and is a stable energy source.
[0004] The existing tidal power generation system accumulates seawater in a water tank during high tide, and the seawater in the water tank is gradually discharged from the water tank, and the water level in the water tank gradually decreases. When the water level in the water tank decreases, a buoy floating on the water surface in the water tank gradually descends accordingly. When the buoy descends, it drives a rod connected to the buoy to move, and the linear motion of the rod drives a generator gear to rotate, and the generator gear drives a generator to generate electricity. This method uses the rise and fall of the tide to generate electricity, but it only uses the electrical energy converted by the buoy descending and driving the rod descending when the water level in the water tank decreases, but does not use the energy generated when the water level in the water tank rises, and the power generation efficiency still needs to be further improved. Utility Model Content
[0005] Based on this, the purpose of the utility model is to provide a tidal power generation system with high energy utilization rate.
[0006] The utility model adopts the following technical solutions:
[0007] A tidal power generation system comprises a first working cylinder, a second working cylinder, a piston oil tank and a power generation device; the first working cylinder comprises a first cylinder body, a first piston arranged inside the first cylinder body, and a first hydraulic cylinder arranged at the bottom of the first piston; the second working cylinder comprises a second cylinder body, a second piston arranged inside the second cylinder body, and a second hydraulic cylinder arranged at the bottom of the second piston; when the tide is high, the water level rises, the buoyancy of the first piston is greater than its gravity, and compressed air enters the power generation device to generate high-pressure gas to generate electricity; when the tide is low, the water level drops, the gravity of the second piston is greater than its buoyancy, and compressed air enters the power generation device to generate high-pressure gas to generate electricity.
[0008] A further improvement to the above technical solution is that the first working cylinder and the second working cylinder are respectively connected to the power generation device, and the first hydraulic cylinder and the second hydraulic cylinder are respectively connected to the piston oil tank.
[0009] A further improvement to the above technical solution is that the first piston is a hollow piston.
[0010] A further improvement to the above technical solution is that the power generation device includes a storage box for storing high-pressure gas, a steam turbine and a generator, the steam turbine is connected to the storage box, and the steam turbine is connected to the generator through a connecting air valve.
[0011] A further improvement to the above technical solution is that the power generation device also includes a pressure gauge and a first pressure relief valve, and the pressure gauge and the first pressure relief valve are respectively connected to the storage tank.
[0012] A further improvement to the above technical solution is that the top of the first working cylinder is connected to a first ventilation valve and a first one-way valve arranged on one side of the first ventilation valve, and the first one-way valve is connected to a storage box.
[0013] A further improvement to the above technical solution is that the top of the second working cylinder is connected to a second ventilation valve and a second one-way valve arranged on one side of the second ventilation valve, and the second one-way valve is connected to the storage box.
[0014] A further improvement to the above technical solution is that hydraulic oil is provided inside the piston oil tank.
[0015] A further improvement to the above technical solution is that the top of the piston oil tank is connected to a second pressure relief valve, and the bottom of the piston oil tank is respectively connected to a third one-way valve and a fourth one-way valve, the third one-way valve is connected to the second hydraulic cylinder, the fourth one-way valve is connected to the first hydraulic cylinder, and the hydraulic oil of the second hydraulic cylinder flows from the third one-way valve to the fourth one-way valve to the first hydraulic cylinder.
[0016] A further improvement to the above technical solution is that an oil valve is provided between the third one-way valve and the fourth one-way valve, and both ends of the oil valve are respectively connected to the first hydraulic cylinder and the second hydraulic cylinder.
[0017] The beneficial effects of the utility model are:
[0018] The utility model utilizes natural tidal energy to generate electricity, which is clean, low-carbon, renewable, stable and reliable, and improves energy utilization.
[0019] Specifically, when the water level is at a low point and the tide is rising, the first vent valve, oil valve, and second pressure relief valve are closed, and the third one-way valve, fourth one-way valve, and second vent valve are opened. As the water level rises, the buoyancy of the first piston increases and begins to rise. The volume of the first hydraulic cylinder increases and the pressure decreases. At this time, the hydraulic oil flows from the second hydraulic cylinder through the third one-way valve to the fourth one-way valve and then to the first hydraulic cylinder. At the same time, the gas in the first cylinder is compressed. When the gas pressure is greater than the pressure in the storage tank, the first one-way valve automatically opens, and the high-pressure gas enters the storage tank through the first one-way valve. When the water level reaches the highest, the tide is completed.
[0020] When the water level is at a high point and work is being done during ebb tide, the fourth one-way valve, the second pressure relief valve, and the second vent valve are closed, and the first vent valve and the oil valve are opened. When the water level drops, the first piston is subjected to gravity and atmospheric pressure, pushing the first hydraulic cylinder downward and being squeezed, and the pressure is transmitted to the second hydraulic cylinder through the hydraulic oil. The gas pressure in the second cylinder body begins to increase. When the gas pressure in the second cylinder body is greater than the pressure in the storage tank, the second one-way valve is automatically opened, and the compressed gas in the second cylinder body enters the storage tank through the second one-way valve. When the water level reaches the lowest point, a ebb tide process is completed.
[0021] When the gas pressure in the storage tank reaches a certain value, the connecting valve opens, and the gas drives the steam turbine to drive the generator to generate electricity. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 It is a structural schematic diagram of the tidal power generation system of the utility model.
[0023] Numbers in the figure:
[0024] 10. First working cylinder; 11. First cylinder body; 12. First piston; 13. First hydraulic cylinder; 14. First ventilation valve; 15. First non-return valve;
[0025] 20. Second working cylinder; 21. Second cylinder body; 22. Second piston; 23. Second hydraulic cylinder; 24. Second ventilation valve; 25. Second non-return valve;
[0026] 30. Piston oil tank; 31. Hydraulic oil; 32. Second pressure relief valve; 33. Third one-way valve; 34. Fourth one-way valve; 35. Oil valve;
[0027] 40. Power generation device; 41. Storage tank; 42. Steam turbine; 43. Generator; 44. Air connecting valve; 45. Pressure gauge; 46. First pressure relief valve. DETAILED DESCRIPTION
[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0029] In the description of the present invention, it should be noted that the terms "vertical direction", "upper", "lower", "horizontal" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, "first", "second", "third", and "fourth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.
[0030] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0031] like Figure 1 As shown, an embodiment of the utility model relates to a tidal power generation system, including a first working cylinder 10, a second working cylinder 20, a piston oil tank 30 and a power generation device 40; the first working cylinder 10 includes a first cylinder body 11, a first piston 12 arranged inside the first cylinder body 11, and a first hydraulic cylinder 13 arranged at the bottom of the first piston 12; the second working cylinder 20 includes a second cylinder body 21, a second piston 22 arranged inside the second cylinder body 21, and a second hydraulic cylinder 23 arranged at the bottom of the second piston 22; when the tide is high, the water level rises, the buoyancy of the first piston 12 is greater than its gravity, and compressed air enters the power generation device 40 to generate high-pressure gas to generate electricity; when the tide is low, the water level drops, the gravity of the second piston 22 is greater than its buoyancy, and compressed air enters the power generation device 40 to generate high-pressure gas to generate electricity.
[0032] Furthermore, the first working cylinder 10 and the second working cylinder 20 are respectively connected to the power generation device 40 , and the first hydraulic cylinder 13 and the second hydraulic cylinder 23 are respectively connected to the piston oil tank 30 .
[0033] Furthermore, the first piston 12 is a hollow piston.
[0034] Furthermore, the power generation device 40 includes a storage box 41 for storing high-pressure gas, a steam turbine 42 and a generator 43 . The steam turbine 42 is connected to the storage box 41 , and the steam turbine 42 is connected to the generator 43 via a connecting valve 44 .
[0035] Furthermore, the power generation device 40 further includes a pressure gauge 45 and a first pressure relief valve 46 , and the pressure gauge 45 and the first pressure relief valve 46 are respectively connected to the storage tank 41 .
[0036] Furthermore, a first ventilation valve 14 and a first non-return valve 15 provided at one side of the first ventilation valve 14 are connected to the top of the first working cylinder 10 , and the first non-return valve 15 is connected to the storage box 41 .
[0037] Furthermore, a second ventilation valve 24 and a second one-way valve 25 provided at one side of the second ventilation valve 24 are connected at the top of the second working cylinder 20 , and the second one-way valve 25 is connected to the storage box 41 .
[0038] Furthermore, hydraulic oil 31 is provided inside the piston oil tank 30 .
[0039] Furthermore, a second pressure relief valve 32 is connected to the top of the piston oil tank 30, and a third one-way valve 33 and a fourth one-way valve 34 are respectively connected to the bottom of the piston oil tank 30. The third one-way valve 33 is connected to the second hydraulic cylinder 23, and the fourth one-way valve 34 is connected to the first hydraulic cylinder 13. The hydraulic oil 31 of the second hydraulic cylinder 23 flows along the third one-way valve 33 to the fourth one-way valve 34 to the first hydraulic cylinder 13.
[0040] Furthermore, an oil valve 35 is provided between the third one-way valve 33 and the fourth one-way valve 34 , and two ends of the oil valve 35 are respectively connected to the first hydraulic cylinder 13 and the second hydraulic cylinder 23 .
[0041] The working principle of the utility model is:
[0042] When the water level is at a low point and the rising tide does work, the first ventilation valve 14, the oil valve 35, and the second pressure relief valve 32 are closed, while the third one-way valve 33, the fourth one-way valve 34, and the second ventilation valve 24 are open. As the water level rises, according to the formula: F_buoyancy = ρ_fluid * g * V_displaced - G1, with the increase of V_displaced, the buoyancy force on the first piston 12 increases, and it begins to rise. The volume of the first hydraulic cylinder 13 becomes larger and the pressure becomes smaller. At this time, the hydraulic oil 31 flows from the second hydraulic cylinder 23 through the third one-way valve 33 to the fourth one-way valve 34 and then to the first hydraulic cylinder 13. Meanwhile, the gas in the first cylinder block 11 is compressed, and the gas in the first cylinder block 11 is equal to F_buoyancy = ρ_fluid * g * V_displaced - G1. As F_buoyancy increases, when the gas pressure is greater than the pressure in the storage tank 41, the first one-way valve 15 automatically opens, and the high-pressure gas enters the storage tank 41 through the first one-way valve 15. When the water level reaches the highest point, a rising tide work process is completed.
[0043] When the water level is at a high point and the ebbing tide does work, the fourth one-way valve 34, the second pressure relief valve 32, and the second ventilation valve 24 are closed, while the first ventilation valve 14 and the oil valve 35 are open. When the water level drops, the first piston 12 is subject to gravity and atmospheric pressure, pushing the first hydraulic cylinder 13 downward to squeeze, and it is transmitted to the second hydraulic cylinder 23 through the hydraulic oil 31. The upward thrust formula of the second hydraulic cylinder 23 is: F = (G1 + P / S1) * S2 / S3 - ρ_fluid * g * V_displaced1 - G2 + P / (S4 - S3). When the water level drops, the buoyancy force of ρ_fluid * g * V_displaced1 becomes smaller, and the downward force of F becomes larger. The gas pressure in the second cylinder block 21 begins to increase. When the gas pressure in the second cylinder block 21 is greater than the pressure in the storage tank 41, the second one-way valve 25 automatically opens, and the compressed gas in the second cylinder block 21 enters the storage tank 41 through the second one-way valve 25. When the water level reaches the lowest point, an ebbing tide work process is completed.
[0044] When the gas pressure in the storage tank 41 reaches a certain value, the connecting air valve 44 opens, and the gas drives the steam turbine 42 to drive the generator 43 to generate electricity.
[0045] Parameter description: G1 is the gravity of the first piston 12, P is the atmospheric pressure, S1 is the surface area of the first piston 12, S2 is the surface area of the first hydraulic cylinder 13, S3 is the surface area of the second hydraulic cylinder 23, S4 is the surface area of the second piston 22, G2 is the gravity of the second piston 22, V_displaced is the volume of the first piston 12 underwater, and V_displaced1 is the volume of the second piston 22 underwater.
[0046] The above only represents the preferred technical solution of the present invention, and its description is relatively specific and detailed, but it should not be construed as a limitation to the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and the present invention also intends to include these changes and modifications.
Claims
1. A tidal power generation system, characterized in that: It includes a first working cylinder, a second working cylinder, a piston oil tank and a power generation device; the first working cylinder includes a first cylinder body, a first piston arranged inside the first cylinder body, and a first hydraulic cylinder arranged at the bottom of the first piston; the second working cylinder includes a second cylinder body, a second piston arranged inside the second cylinder body, and a second hydraulic cylinder arranged at the bottom of the second piston; when the tide is high, the water level rises, the buoyancy of the first piston is greater than its gravity, and compressed air enters the power generation device to generate high-pressure gas for power generation; when the tide is low, the water level drops, the gravity of the second piston is greater than its buoyancy, and compressed air enters the power generation device to generate high-pressure gas for power generation.
2. The tidal power generation system according to claim 1, characterized in that: The first working cylinder and the second working cylinder are respectively connected to the power generation device, and the first hydraulic cylinder and the second hydraulic cylinder are respectively connected to the piston oil tank.
3. The tidal power generation system according to claim 1, characterized in that: The first piston is a hollow piston.
4. The tidal power generation system according to claim 1, characterized in that: The power generation device comprises a storage box for storing high-pressure gas, a steam turbine and a generator. The steam turbine is connected to the storage box, and the steam turbine is connected to the generator through a connecting gas valve.
5. The tidal power generation system according to claim 4, characterized in that: The power generation device further includes a pressure gauge and a first pressure relief valve, and the pressure gauge and the first pressure relief valve are respectively connected to the storage tank.
6. The tidal power generation system according to claim 1, characterized in that: The top of the first working cylinder is connected to a first ventilation valve and a first one-way valve arranged at one side of the first ventilation valve, and the first one-way valve is connected to the storage box.
7. The tidal power generation system according to claim 1, characterized in that: The top of the second working cylinder is connected to a second ventilation valve and a second one-way valve arranged at one side of the second ventilation valve, and the second one-way valve is connected to the storage tank.
8. The tidal power generation system according to claim 1, characterized in that: Hydraulic oil is arranged inside the piston oil tank.
9. The tidal power generation system according to claim 1, characterized in that: The top of the piston oil tank is connected to a second pressure relief valve, and the bottom of the piston oil tank is respectively connected to a third one-way valve and a fourth one-way valve. The third one-way valve is connected to the second hydraulic cylinder, and the fourth one-way valve is connected to the first hydraulic cylinder. The hydraulic oil of the second hydraulic cylinder flows from the third one-way valve to the fourth one-way valve to the first hydraulic cylinder.
10. The tidal power generation system according to claim 9, characterized in that: An oil valve is connected between the third one-way valve and the fourth one-way valve, and both ends of the oil valve are connected to the first hydraulic cylinder and the second hydraulic cylinder respectively.