A power generation system utilizing tidal energy

Abstract

This application relates to a tidal energy power generation system, belonging to the field of tidal energy utilization technology. It includes a receiving tank, a storage tank, a watertight chamber, positioning screws, and foundation piles. The storage tank, with its open top, is fixed above the receiving tank, and the two tanks are connected by a drain pipe. The water flow inside the drain pipe drives the impeller to rotate. A generator set is installed inside the watertight chamber, and the input shaft of the generator set is connected to the impeller shaft. The foundation piles are located below the receiving tank and connected to it via positioning screws. The drainage channel of the receiving tank is equipped with a drain valve. This application miniaturizes, modularizes, and makes the tidal energy power generation system mobile, eliminating the need for reservoirs and dams, reducing investment, and making it more suitable for the electricity needs of coastal fishing grounds.

Description

Technical Field

[0001] This application belongs to the field of tidal energy utilization technology, specifically relating to a power generation system utilizing tidal energy. Background Technology

[0002] Tidal power generation technology is a renewable energy technology that utilizes the water level difference or tidal energy generated by the periodic rise and fall of seawater to convert it into electricity through devices such as water turbines. It typically involves building dams in bays or estuaries to create reservoirs, using tidal differences to drive water turbines. These are large-scale marine energy power generation facilities, and current technology cannot be applied to the power supply systems of marine fishing grounds.

[0003] However, most marine fishing grounds are built offshore. To avoid the impact of human activities on fish, even coastal fishing grounds are built at least 5 nautical miles from the coastline. In the operation of coastal fishing grounds, because the number of fish per unit area is greater than that in the natural environment, aerators are needed for oxygenation, feeders are needed for automated feed distribution, and other equipment requires electricity to operate.

[0004] The traditional power supply method for coastal fishing grounds is to extend the port's power grid to the fishing grounds via submarine cables to provide a stable power supply for aquaculture equipment, cold storage, etc., with diesel generator sets as an emergency backup. This power supply architecture requires high initial investment, and electricity costs account for a significant proportion of the operating costs in the later stages. Summary of the Invention

[0005] The technical problem to be solved by this application is to overcome the shortcomings of the existing technology and provide a power generation system that utilizes tidal energy. This application miniaturizes, modularizes, and makes the tidal energy power generation system mobile, eliminating the need to build reservoirs and dams, reducing investment, and making it more suitable for the electricity needs of coastal fishing grounds.

[0006] The technical solution adopted in this application to solve the problems existing in the prior art is:

[0007] A power generation system utilizing tidal energy includes a water receiving tank, a water storage tank, a watertight compartment, positioning screws, and foundation piles.

[0008] The water storage tank, which is open at the top, is fixed above the water receiving tank. The water storage tank and the water receiving tank are connected by a drain pipe, and the water flow inside the drain pipe drives the impeller to rotate.

[0009] The watertight chamber is equipped with a generator set, and the input shaft of the generator set is connected to the shaft of the impeller.

[0010] The foundation piles are installed below the water receiving tank and are connected to the water receiving tank by positioning screws. The drainage channel of the water receiving tank is equipped with a drain valve.

[0011] Preferably, two foundation piles are arranged below the water receiving tank, and each foundation pile is provided with at least two positioning screws arranged at intervals.

[0012] The water receiving tank has a first mounting plate protruding from its length end. The first mounting plate has mounting holes that fit onto the positioning screw. Nuts that are threadedly connected to the positioning screw are abutted on the upper and lower sides of the first mounting plate.

[0013] Preferably, a drive chamber is connected through the drain pipe, the axis of the drive chamber is perpendicular to the drain pipe and arranged at intervals, and the impeller is rotatably disposed inside the drive chamber.

[0014] Preferably, the cross-sectional shape of the drainage channel of the water receiving tank is T-shaped, and the drainage valve includes a T-shaped slider. The height of the T-shaped slider is greater than or equal to the height of the drainage channel, and the T-shaped slider is slidably disposed inside the drainage channel.

[0015] The top of the drainage channel is provided with an upper baffle, and an upper extension plate is fixed to the outer side of the top of the T-shaped slider. A first float plate is provided on the upper extension plate.

[0016] Preferably, the water tank is equipped with a drainage control assembly. When the liquid level inside the water tank is higher than a threshold, the drainage control assembly controls the water tank to drain into the water pipe.

[0017] Preferably, the drain pipe is located below the water tank, and the connection between the drain pipe and the water tank is located on the bottom surface of the water tank.

[0018] Preferably, the drainage control assembly includes a vertically arranged valve core, with a second float plate connected to the top of the valve core. In the free state, the valve core extends into the drain pipe.

[0019] Preferably, the valve core has a sliding sleeve extending outward from the top, and the bottom surface of the water tank has a vertically arranged sliding rod fixed thereon, with the sliding sleeve fitted onto the sliding rod.

[0020] Preferably, an energy storage assembly is connected to the positioning screw.

[0021] Preferably, the energy storage assembly includes a housing, and the housing has a plurality of partitions inside, which divide the housing into an energy storage unit placement cavity and a cooling isolation cavity arranged at intervals. The energy storage unit placement cavity contains an energy storage unit, and the housing at the cooling isolation cavity has a plurality of through holes running vertically through it.

[0022] Compared with the prior art, the beneficial effects of this application are as follows:

[0023] (1) The power generation assembly, energy storage assembly and foundation piles have been modularized and miniaturized, making them more suitable for power supply in coastal fishing grounds. Their modularization and miniaturization, through the assembly connection method, also facilitate disassembly, recycling and reuse.

[0024] (2) Not only can tidal energy be used to generate electricity, but the water tank can also be replenished by ocean waves to generate electricity, which increases the total power generation time and thus improves the utilization efficiency.

[0025] (3) By controlling the liquid level of the drained water through the drainage control assembly inside the water tank, the utilization of the potential energy of the seawater inside can be optimized, thereby increasing the power generation time and power generation efficiency. Attached Figure Description

[0026] The present application will be further described below with reference to the accompanying drawings and embodiments.

[0027] Figure 1 This is a structural diagram of a power generation system utilizing tidal energy according to this application.

[0028] Figure 2 This is a structural diagram of a power generation assembly in a power generation system utilizing tidal energy, as described in this application.

[0029] Figure 3 This is a structural diagram of the power generation assembly in this application when the water tank drain valve is closed.

[0030] Figure 4 This is a structural diagram of the power generation assembly in this application when the drain valve of the water tank is open.

[0031] Figure 5 This is a sectional view of the water tank in the power generation assembly of this application.

[0032] Figure 6 This is a structural diagram of the water tank in the power generation assembly of this application.

[0033] Figure 7 This is a schematic diagram of the bottom of the water tank in the power generation assembly of this application.

[0034] Figure 8 This is an exploded view of the water tank in the power generation assembly of this application.

[0035] Figure 9 This is a cross-sectional view of the water tank drain outlet in the power generation assembly of this application when it is open.

[0036] Figure 10 This is a partial sectional view of the water tank drainage control assembly in the power generation assembly of this application.

[0037] Figure 11 This is a cross-sectional view of the water tank drain outlet in the power generation assembly of this application when it is closed.

[0038] Figure 12This is a first cross-sectional view of an energy storage assembly in a power generation system utilizing tidal energy, as described in this application.

[0039] Figure 13 This is a second cross-sectional view of an energy storage assembly in a power generation system utilizing tidal energy, as described in this application.

[0040] In the diagram: 1-Water tank, 101-Water inlet, 102-Drainage channel, 103-Upper baffle, 104-First mounting plate, 105-Slot, 2-Drain valve, 201-T-slider, 202-Upper extension plate, 203-First float plate, 3-Exhaust pipe, 301-Float ball, 4-Water tank, 401-Support leg, 5-Drain pipe, 6-Drive chamber, 7-Impeller, 701-Shaft, 702-Insertion hole, 8-Watertight compartment, 801-Input shaft, 802-Insertion plate, 9-Sleeve, 901-Water inlet, 902-Support sleeve, 903 - Adapter plate, 10- Valve core, 1001- Conical head, 1002- Limiting plate, 1003- Sliding sleeve, 11- Second float plate, 12- Sliding rod, 13- Top rod, 1301- Third float plate, 14- Rotating block, 15- Positioning screw, 16- Foundation pile, 17- Nut, 18- Energy storage assembly, 1801- Housing, 1802- Second mounting plate, 1803- Partition plate, 1804- Wiring cavity, 1805- Energy storage unit placement cavity, 1806- Cooling isolation cavity, 1807- Wiring hole, 1808- Through hole, 1809- Energy storage unit. Detailed Implementation

[0041] The accompanying drawings provide a more detailed description of a tidal energy power generation system, but this is not intended to limit the scope of the application.

[0042] Depend on Figure 1 As shown, a power generation system utilizing tidal energy includes a power generation assembly positioning screw 15 and a foundation pile 16. Figure 2 As shown, the power generation assembly includes a water receiving tank 1, a water storage tank 4, and a watertight compartment 8.

[0043] A water storage tank 4, with its upper open end, is fixed above the water receiving tank 1 and is securely connected via a supporting leg 401 below it. The water storage tank 4 and the water receiving tank 1 are connected by a drain pipe 5, and the water flow inside the drain pipe 5 drives the impeller 7 to rotate. Furthermore, a drive chamber 6 is connected through the drain pipe 5, with its axis perpendicular to and spaced apart from the drain pipe 5. The impeller 7 is coaxially rotatably disposed inside the drive chamber 6.

[0044] At least three sets of water storage tanks 4 are arranged above the water receiving tank 1, and the sum of the internal volumes of all the water storage tanks 4 is less than or equal to the internal volume of the water receiving tank 1.

[0045] The watertight chamber 8 is equipped with a generator set, and the input shaft 801 of the generator set is connected to the rotating shaft 701 of the impeller 7.

[0046] Depend on Figures 3 to 5 As shown, the drainage channel 102 of the water receiving tank 1 is equipped with a drainage valve 2. The cross-sectional shape of the drainage channel 102 of the water receiving tank 1 is T-shaped. The drainage channel 102 is arranged vertically with open ends. The top of the drainage channel 102 is equipped with an upper baffle 103, and the lower outer side of the drainage channel 102 is equipped with a protrusion.

[0047] The drain valve 2 includes a T-shaped slider 201, the height of which is greater than or equal to the height of the drain channel 102, and the T-shaped slider 201 is slidably disposed inside the drain channel 102.

[0048] An upper extension plate 202 is fixed to the outer top of the T-shaped slider 201, and a first float plate 203 is provided on the upper extension plate 202.

[0049] As the sea level rises and falls, the first float 203 moves the T-shaped slider 201 up and down. When the first float 203 moves to the top and is blocked by the upper baffle 103, the T-shaped slider 201 blocks the drainage channel 102. When the sea level drops, the first float 203 moves down and is blocked by the protrusion on the lower outer side of the drainage channel 102, preventing the drainage valve 2 from completely disengaging from the drainage channel 102. At this time, the drainage channel 102 opens, and the water tank 1 drains water outward.

[0050] Depend on Figures 6 to 11 As shown, the water tank 4 is equipped with a drainage control assembly. When the liquid level inside the water tank 4 is higher than the threshold, the drainage control assembly controls the water tank 4 to drain water into the drain pipe 5 to ensure that the water pressure inside the drain pipe 5 is higher than the threshold, so as to drive the impeller 7 to rotate, thereby driving the generator set inside the watertight chamber 8 to generate electricity.

[0051] The drain pipe 5 is located below the water tank 4, and the connection between the drain pipe 5 and the water tank 4 is located on the bottom surface of the water tank 4. The top surface of the water receiving tank 1 is provided with a water receiving hole 101, and the bottom of the drain pipe 5 is connected to the water receiving hole 101.

[0052] In this embodiment, the drainage control assembly includes a vertically arranged valve core 10, with a conical head 1001 at the bottom and a second float plate 11 connected to the top of the valve core 10. In its free state, the valve core 10 extends into the drain pipe 5, with the outer diameter of the valve core 10 being the same as the inner diameter of the drain pipe 5. After entering the drain pipe 5, it seals the drain pipe 5. The opening liquid level of the drainage control assembly is adjusted by the height design of the valve core 10.

[0053] The valve core 10 has a sliding sleeve 1003 extending outward from the top. The bottom surface of the water tank 4 is fixed with a vertically arranged sliding rod 12. The sliding sleeve 1003 is sleeved on the sliding rod 12, and the sliding rod 12 guides the valve core 10 so that it can only move up and down.

[0054] To achieve a modular design for the drainage control assembly, facilitating production and replacement, the drainage control assembly includes a sleeve 9, which is open at both the top and bottom. A ring-shaped mounting flange is fitted onto the bottom of the sleeve 9, and the mounting flange is detachably connected to the bottom surface of the water tank 4 by bolts.

[0055] The sleeve 9 has several water inlet holes 901 on its lower circumference. The height of the water inlet holes 901 controls the minimum liquid level of the water tank 4, which is also the minimum pressure of the water flow inside the drain pipe 5. The top of the slide rod 12 is fixedly connected to the top surface of the sleeve 9 through a plate. The cylindrical valve core 10 is coaxially set in the middle of the sleeve 9. The valve core 10 is connected to the second float plate 11 above the extension rod. The outer diameter of the second float plate 11 is larger than the outer diameter of the sleeve 9.

[0056] During high tide, the sea level rises. When the sea level is higher than the top of the water tank 4, seawater flows into the water tank 4, causing the liquid level inside the water tank 4 to rise. When the liquid level reaches the height of the second float 11, it pushes the second float 11 upward, which in turn moves the valve core 10 upward. After the valve core 10 is completely removed from the drain pipe 5, the seawater inside the water tank 4 flows through the drain pipe 5 into the drive chamber 6, driving the impeller 7 to rotate.

[0057] Since the drain valve 2 is controlled by the first float 203, when the sea surface rises, the second float 203 rises, closing the drain channel 102 in advance, preventing seawater from flowing into the water receiving tank 1 through the drain channel 102. To allow for early closure of the drain valve 2, the second float 203 can be positioned in the middle or lower part of the T-shaped slider 201. This creates an empty chamber inside the water receiving tank 1, eliminating back pressure on the seawater discharged through the drain pipe 5, thus ensuring smooth drainage from the drain pipe 5 and efficient energy conversion with the impeller 7.

[0058] A vent pipe 3 is connected through the top of the water receiving tank 1. The vent pipe 3 is a flexible hose, and its end is connected to a float 301, which has a vent hole. The float 301 can float on the sea surface to ensure unobstructed venting. The vent pipe 3 ensures that the internal pressure of the water receiving tank 1 remains stable during the water intake process.

[0059] With the above arrangement of the drainage control assembly, when the sea level drops and the second float 11 moves downward, the valve core 10 is inserted into the drain pipe 5, preventing the water tank 4 from draining to generate electricity. However, at this time, the liquid level inside the water tank 4 is higher than the height of the sleeve 9, and the potential energy of the seawater inside can still be used to drive the generator set to rotate and generate electricity.

[0060] In order to make more thorough use of the potential energy of the seawater inside the water tank 4, in this embodiment, two sets of symmetrically arranged adapter plates 903 are fixed on the upper part of the inner wall of the sleeve 9, and a rotating block 14 is rotatably connected between each set of adapter plates 903.

[0061] A support sleeve 902 is fixed to the inner wall of the sleeve 9 located below the adapter plate 903. A top rod 13, which is arranged vertically, is inserted inside the support sleeve 902. A third float plate 1301 is fixed to the bottom of the top rod 13. The top of the top rod 13 is located directly below the rotating block 14. A limiting ring is fitted on the top rod 13. The limiting ring is located below the support sleeve 902. When the buoyancy of the seawater pushes the top rod 13 upward through the third float plate 1301, and the limiting ring abuts against the bottom of the support sleeve 902, the top of the top rod 13 abuts against the bottom surface of the horizontally arranged rotating block 14.

[0062] A limit plate 1002 is fixed at the position corresponding to the top of the valve core 10 and the rotating block 14. When the liquid level inside the water tank 4 rises, it first pushes the third float 1301 upward until the limit ring of the push rod 13 abuts against the support sleeve 902, and the push rod 13 pushes the rotating block 14 to a horizontal position.

[0063] As the liquid level inside the water tank 4 continues to rise, the second float 11 causes the valve core 10 to move upward. When the limiting plate 1002 of the valve core 10 contacts the rotating block 14, it pushes the rotating block 14 to rotate around one end of the center of its principle sleeve 9, allowing the valve core 10 to continue moving upward. When the limiting plate 1002 moves above the rotating block 14, the rotating block 14 returns to a horizontal position under its own weight. At this time, the valve core 10 disengages from the drain pipe 5, and the water tank 4 begins to drain.

[0064] As the liquid level inside the water tank 4 decreases, the valve core 10 falls, and the limiting plate 1002 falls directly above the rotating block 14. The two contact, and the rotating block 14 supports the valve core 10, preventing it from falling further. At this point, the valve core 10 has not yet entered the drain pipe 5, and the drain pipe 5 continues to drain water. Only when the liquid level inside the water tank 4 is lower than the third float plate 1301, and the push rod 13 moves down, allowing the rotating block 14 to rotate downwards, will the limiting plate 1002 of the valve core 10 push the rotating block 14 to rotate downwards, causing it to disengage from the rotating block 14, and the valve core 10 falls rapidly.

[0065] The maximum height of the third float 1301 is level with the water inlet 901, thus enabling effective utilization of the potential energy of the seawater inside the water tank 4. This allows it to utilize not only tidal energy, but also, when the sea level is lower than the upper opening of the water tank 4, waves can push seawater into the water tank 4, allowing it to generate electricity using wave energy.

[0066] In the event of a generator set failure, to facilitate rapid replacement, this embodiment includes a slot 105 on the top surface of the water tank 1 and an insert plate 802 on the watertight compartment 8. The insert plate 802 and the slot 105 are connected by horizontal sliding to achieve rapid positioning. Fastening bolts can be added between the insert plate 802 and the slot 105 for secure connection after positioning.

[0067] The impeller 7 shaft 701 has a polygonal insertion hole 702 recessed at its end. The generator set input shaft 801 also has a polygonal end. The end of the insertion shaft 801 is inserted into the insertion hole 702 for quick connection. The top of the watertight compartment 8 is equipped with a lifting ring for easy hoisting.

[0068] The foundation piles 16 are installed below the water receiving tank 1 and are connected to the water receiving tank 1 via positioning screws 15. To ensure smoother drainage from the water receiving tank 1 during low tide, the drainage tank 1 is positioned above the lowest point of the sea surface at low tide. Therefore, two foundation piles 16 are arranged below the water receiving tank 1, and each foundation pile 16 is equipped with at least two spaced positioning screws 15.

[0069] The water receiving tank 1 has a first mounting plate 104 protruding from its end along the length direction. The first mounting plate 104 has mounting holes that fit onto the positioning screw 15. Nuts 17 that are threadedly connected to the positioning screw 15 are abutted on the upper and lower sides of the first mounting plate 104.

[0070] The foundation pile 16 can be made of concrete and rests on the seabed. It is supported and positioned by connecting to the water tank 1 through the bolts 15 and nuts 17.

[0071] Depend on Figure 12 as well as Figure 13 As shown, an energy storage assembly 18 is connected to the positioning screw 15. The energy storage assembly 18 includes a housing 1801, inside which are provided several partitions 1803. The partitions 1803 divide the interior of the housing 1801 into spaced-apart energy storage unit placement cavities 1805 and cooling isolation cavities 1806. Energy storage units 1809 are housed within the energy storage unit placement cavities 1805. Several through holes 1808 are provided on the housing 1801 at the cooling isolation cavities 1806. The energy storage unit 1809 adopts existing technology, including a battery and a power control module, and its connection to the generator set also adopts existing technology.

[0072] The cooling isolation chamber 1806 primarily serves two functions: isolation and cooling. If one energy storage unit 1809 malfunctions and catches fire, it will not affect the other energy storage units 1809. Seawater enters and exits the cooling isolation chamber 1806 through two sets of through-holes 1808 arranged vertically. The heated seawater exits through the lower through-hole 1808, while the cooler seawater flows into the cooling isolation chamber 1806 through the upper through-hole 1808 for cooling.

[0073] The housing 1801 has a wiring cavity 1804 inside, which is connected to the energy storage unit placement cavity 1805 through a wiring hole 1807 for wiring.

[0074] A second mounting plate 1802 is provided on the end face of the housing 1801. The second mounting plate 1802 is provided with an insertion hole, which is sleeved on the positioning screw 15. The bottom end of the housing 1801 overlaps the top of the foundation pile 16.

[0075] At least two towing ropes are connected to the shell 1801, and the ends of the towing ropes are fixed to the water receiving tank 1, so that the energy storage assembly 18 can be pulled out of the sea surface for maintenance in the future.

[0076] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application.

Claims

1. A power generation system utilizing tidal energy, characterized in that... : It includes a water receiving tank (1), a water storage tank (4), a watertight compartment (8), a positioning screw (15), and a foundation pile (16); The water storage tank (4) with an open top is fixed above the water receiving tank (1). The water storage tank (4) and the water receiving tank (1) are connected by a drain pipe (5). The water flow inside the drain pipe (5) drives the impeller (7) to rotate. The watertight chamber (8) is equipped with a generator set, and the input shaft (801) of the generator set is connected to the rotating shaft (701) of the impeller (7); The foundation pile (16) is located below the water receiving tank (1), and the foundation pile (16) is connected to the water receiving tank (1) by a positioning screw (15). The drainage channel (102) of the water receiving tank (1) is equipped with a drainage valve (2). Two foundation piles (16) are arranged below the water receiving tank (1), and each foundation pile (16) is provided with at least two spaced positioning screws (15). The water receiving tank (1) has a first mounting plate (104) protruding from its end along the length direction. The first mounting plate (104) has mounting holes, which are fitted onto the positioning screw (15). Nuts (17) that are threadedly connected to the positioning screw (15) are abutted on the upper and lower sides of the first mounting plate (104). The water tank (4) is equipped with a drainage control assembly, which includes a vertically arranged valve core (10). The top of the valve core (10) is connected to a second float plate (11). The outer diameter of the valve core (10) is the same as the inner diameter of the drain pipe (5). In the free state, the valve core (10) passes through the drain pipe (5) to seal the drain pipe (5). When the sea level is higher than the top of the water tank (4), the seawater flows into the water tank (4). The liquid level inside the water tank (4) pushes the second float (11) upward. When the valve core (10) is completely removed from the drain pipe (5), the seawater inside the water tank (4) flows through the drain pipe (5) into the drive chamber (6), driving the impeller (7) to rotate.

2. A power generation system utilizing tidal energy according to claim 1, characterized in that... : The drain pipe (5) is connected to a drive chamber (6). The axis of the drive chamber (6) is perpendicular to the drain pipe (5) and arranged at intervals. The impeller (7) is rotatably disposed inside the drive chamber (6).

3. A power generation system utilizing tidal energy according to claim 2, characterized in that... : The horizontal cross-sectional shape of the drainage channel (102) of the water receiving tank (1) is T-shaped, and the drainage valve (2) includes a T-shaped slider (201). The height of the T-shaped slider (201) is greater than or equal to the height of the drainage channel (102), and the T-shaped slider (201) is slidably disposed inside the drainage channel (102). The top of the drainage channel (102) is provided with an upper baffle (103), and an upper extension plate (202) is fixed on the outer side of the top of the T-shaped slider (201). The upper extension plate (202) is provided with a first float plate (203).

4. A power generation system utilizing tidal energy according to claim 3, characterized in that... : The drain pipe (5) is located below the water tank (4), and the connection between the drain pipe (5) and the water tank (4) is located on the bottom surface of the water tank (4).

5. A power generation system utilizing tidal energy according to claim 4, characterized in that... : The valve core (10) has a sliding sleeve (1003) extending outward from the top, and the water tank (4) has a vertically arranged sliding rod (12) fixed on the bottom surface, with the sliding sleeve (1003) sleeved on the sliding rod (12).

6. A power generation system utilizing tidal energy according to claim 5, characterized in that... : The positioning screw (15) is connected to an energy storage assembly (18).

7. A power generation system utilizing tidal energy according to claim 6, characterized in that... : The energy storage assembly (18) includes a housing (1801), and the housing (1801) is provided with a plurality of partitions (1803). The partitions (1803) divide the interior of the housing (1801) into an energy storage unit placement cavity (1805) and a cooling isolation cavity (1806) arranged at intervals. The energy storage unit placement cavity (1805) is provided with an energy storage unit (1809). The housing (1801) at the cooling isolation cavity (1806) is provided with a plurality of through holes (1808) extending vertically.

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