Floating plate type self-adaptive tide level oscillating water column wave energy power generation device

Abstract

The invention discloses a floating plate type self-adaptive tide level oscillating water column wave energy power generation device, belongs to the field of wave energy, and solves the problem that the water depth and the water pressure of a water inlet of an air chamber cannot be kept in a relatively constant state in the prior art. According to the invention, the OWC air chamber is slidably mounted on the guide rail and slides along the length extension direction of the guide rail; a sliding locking device is arranged between the OWC air chamber and the guide rail, and the OWC air chamber slides or is locked on the guide rail through the sliding locking device; the OWC air chamber is connected with a buoyancy device, and a pushing mechanism set for pushing the buoyancy device to move towards the sea surface or be away from the sea surface is arranged between the buoyancy device and the OWC air chamber. According to the floating plate type self-adaptive tide level oscillation water column wave energy power generation device, the water pressure of the water inlet of the OWC air chamber and the liquid level in the air chamber are controlled to be in a reasonable range all the time through the floating plate, and the power generation device is kept to have good conversion efficiency.

Description

Technical Field

[0001] The invention relates to a floating plate type self-adaptive tide level oscillation water column wave energy power generation device, belonging to the field of wave energy power generation. Background Art

[0002] Under the threat of increasing shortage of fossil energy and environmental degradation, it is crucial to develop renewable energy such as ocean energy. Traditional wave energy converters are based on electromagnetic generators, which are complex in structure, bulky in size, and have problems of high cost, low reliability and efficiency. People have begun to adopt oscillating water column (OWC) converters with unique advantages, which can realize wave energy conversion at low frequency.

[0003] The main components of the oscillating water column wave energy power generation device include an air chamber and an air turbine. When the wave approaches the device, water enters the air chamber to push the water level up, increasing the air pressure in the air chamber, and the air is ejected at high speed through the air outlet. When the trough approaches the air chamber, water is pumped out of the air chamber, the air pressure decreases, and the external air enters the air chamber at high speed, driving the air turbine to work. The air turbine drives the generator to rotate, thereby converting wave energy into electrical energy.

[0004] The water pressure at the water inlet of the air chamber is an important indicator of the air chamber operation. The water pressure at the water inlet of the air chamber affects the intake pressure of the turbine, thereby affecting the power generation efficiency of the power generation device. In the sea area, due to the influence of tides, weather factors, etc., the water depth and wave height will change, and it is impossible to ensure that the water depth and water pressure at the water inlet of the air chamber remain in a relatively constant state, and it is impossible to ensure that the power generation device obtains the optimal wave energy conversion efficiency. Summary of the invention

[0005] The present invention provides a floating plate type self-adaptive tide-level oscillating water column wave energy power generation device, which utilizes a floating plate to control the water pressure at the water inlet of an OWC air chamber and the liquid level inside the air chamber to always be within a reasonable range, thereby maintaining a good conversion efficiency of the power generation device.

[0006] The technical solution adopted by the present invention is a floating plate type adaptive tide level oscillation water column wave energy power generation device, comprising an OWC air chamber, and the lower part of the side wall of the OWC air chamber has an air chamber water inlet;

[0007] It also includes a guide rail; the OWC air chamber is slidably mounted on the guide rail and slides along the length extension direction of the guide rail;

[0008] There is a sliding locking device between the OWC air chamber and the guide rail, and the OWC air chamber slides or locks on the guide rail through the sliding locking device;

[0009] The OWC air chamber is connected with a buoyancy device, and a driving mechanism group for driving the buoyancy device to move toward or away from the sea surface is provided between the buoyancy device and the OWC air chamber.

[0010] Optimally, in the above-mentioned floating plate type adaptive tide level oscillation water column wave energy power generation device, the lower end of the OWC air chamber is provided with a counterweight.

[0011] Optimally, the above floating plate type adaptive tide level oscillation water column wave energy power generation device further includes an annular clamp, which is sleeved on the OWC air chamber and fixed relatively to the OWC air chamber;

[0012] A sliding locking device is provided at the rear of the clamp, the guide rail has a groove body arranged along the length extension direction thereof, and the sliding locking device is installed in the groove body of the guide rail.

[0013] Optimized, the above floating plate type adaptive tide level oscillating water column wave energy power generation device, the sliding locking device includes two water breaking blocks and a plurality of pulleys;

[0014] The pulley is rotatably connected with the hoop through the wheel shaft; the two water-breaking blocks are fixed with the hoop, and all the pulleys are located between the two water-breaking blocks.

[0015] Optimized, in the above floating plate type adaptive tide level oscillation water column wave energy power generation device, the water breaking block is a wedge-shaped block, and the end of the water breaking block away from the pulley has a pointed end;

[0016] The side of the water-breaking block is provided with a locking device; the inner two sides of the guide rail are respectively provided with racks which are arranged in cooperation with the locking device.

[0017] Optimized, in the above-mentioned floating plate type adaptive tide level oscillation water column wave energy power generation device, the OWC air chamber has wave gathering plates on both sides of the air chamber water inlet; the wave gathering plates on both sides of the air chamber water inlet are arranged at an angle.

[0018] Optimized, in the above floating plate type adaptive tide level oscillation water column wave energy power generation device, the buoyancy device is a floating plate;

[0019] A swing rod is fixed on one side of the floating plate, and one end of the swing rod away from the floating plate is hinged to the outer surface of the OWC air chamber.

[0020] Optimized, the above-mentioned floating plate type adaptive tide oscillation water column wave energy power generation device, the driving mechanism group includes an active telescopic arm, one end of the active telescopic arm is hinged to the outer surface of the OWC air chamber, and the other end of the active telescopic arm is hinged to the side of the floating plate away from the rocker arm.

[0021] Optimally, the above-mentioned floating plate type adaptive tide oscillation water column wave energy power generation device has several groups of buoyancy devices, all of which are arranged around the OWC air chamber at intervals; each group of buoyancy devices is connected to a group of driving mechanism groups.

[0022] The advantage of the present application is that in the technical solution of the present application, a float is provided as a buoyancy device, and a guide rail is provided as a guide for the lifting and lowering of the OWC air chamber. When the water pressure at the air chamber water inlet of the OWC air chamber is too high, the float is pushed to swing by the pushing mechanism group and the float enters the water, and the OWC air chamber rises along the guide rail by the buoyancy of the float until the water pressure at the air chamber water inlet of the OWC air chamber enters a suitable range, and then the pushing mechanism group pushes the float to swing and leave the water surface, and locks the height by the sliding locking device. In this way, the OWC air chamber can be adjusted with changes in wave height and water depth, ensuring that the water pressure at the air chamber water inlet of the OWC air chamber is in the optimal range, and maintaining a good conversion efficiency of the power generation device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the structure of this application;

[0024] Figure 2 This is a schematic diagram of the connection structure between the clamp and the sliding locking device of the present application;

[0025] Figure 3 A schematic diagram of the internal structure of the guide rail of the present application;

[0026] Figure 4 This is a schematic diagram of the structure of the locking device of the present application. DETAILED DESCRIPTION

[0027] The technical features of the present invention are further described below in conjunction with the accompanying drawings and specific embodiments.

[0028] As shown in the figure, the present invention is a floating plate type adaptive tide level oscillation water column wave energy power generation device, including an internal hollow OWC air chamber 1. In this application, the upper part of the OWC air chamber 1 has an exhaust port connected to the interior, the exhaust port is connected to the air intake drive port of the turbine device, and the lower part of the side wall of the OWC air chamber 1 has an air chamber water inlet connected to the interior. Under the action of wave energy, seawater enters the OWC air chamber 1 through the air chamber water inlet, pushing the air in the OWC air chamber 1 through the exhaust port into the turbine device, and pushing the turbine device to generate electricity.

[0029] The rear part of the OWC air chamber 1 has a guide rail 7. In this embodiment, the length extension direction of the guide rail 7 can be set in a direction perpendicular to the sea level. In other embodiments, the length extension direction of the guide rail 7 can also be set at an acute angle or an obtuse angle with the sea level. The setting standard needs to refer to the wave energy state, geological and climatic conditions of the geographical location where the oscillating water column wave energy power generation device is set.

[0030] The OWC air chamber 1 is slidably mounted on the guide rail 7 and slides along the length extension direction of the guide rail 7. The sliding of the OWC air chamber 1 can change the water pressure at the air chamber water inlet at the lower end of the OWC air chamber 1, thereby ensuring better power generation efficiency.

[0031] In this embodiment, a water pressure sensing device 5 is provided on the limit clamp 2 located just above the water inlet of the air chamber to sense the water pressure at the corresponding position.

[0032] In this embodiment, the OWC air chamber 1 is connected to the guide rail 7 through a clamp 2. The clamp 2 is sleeved on the OWC air chamber 1 and fixed relatively to the OWC air chamber 1 by welding.

[0033] The rear part of the clamp 2 is provided with a sliding locking device, the guide rail 7 has a slot body arranged along the length extension direction thereof, and the sliding locking device is installed in the slot body of the guide rail 7. The OWC air chamber 1 slides or locks on the guide rail 7 through the sliding locking device.

[0034] As shown in the figure, in this embodiment, the sliding locking device includes two water-breaking blocks 10 and four sets of pulleys 12. A wheel frame is provided on the hoop 2, and the axle of the pulley 12 is rotatably connected to the wheel frame through a bearing. The two water-breaking blocks 10 are fixed to the hoop 2, and all the pulleys 12 are located between the two water-breaking blocks 10. Part of the surface of the water-breaking block 10 can be in sliding contact with the inner wall of the groove body of the guide rail 7 or can be arranged at intervals, and the pulley 12 is in rolling contact with the inner wall of the groove body of the guide rail 7. Through the cooperation of the sliding locking device and the guide rail 7, the lifting and lowering movement direction of the OWC air chamber 1 can be limited, and the shaking of the OWC air chamber 1 during the movement can be limited by cooperation.

[0035] In other embodiments, the sliding locking device may also be in the form of a full pulley set or a single slider. The specific form of the sliding locking device may be adaptively selected according to the sea conditions of the sea area where the oscillating water column wave energy power generation device is installed.

[0036] In this embodiment, the water-breaking block 10 is a wedge-shaped block, and the end of the water-breaking block 10 away from the pulley 12 has a sharp tip. The sharp tip of the water-breaking block 10 can play a role in breaking water during the movement of the sliding locking device, reducing the water resistance of the water-breaking block 10 and the entire sliding locking device during the movement, and avoiding the situation where the movement is difficult due to excessive water resistance.

[0037] In this embodiment, the water breaking block 10 has a locking device 11 on the side, and the inner sides of the guide rail 7 are respectively provided with racks 13 arranged in cooperation with the locking device 11. After the OWC air chamber 1 is raised or lowered, the locking block of the locking device 11 is engaged with the rack 13 and is stuck on the rack 13 to limit the position of the OWC air chamber 1.

[0038] The structure of the locking device 11 is shown in the figure. The locking device 11 is mainly composed of a driving gear 14 and a locking pin 15 with a rack. The power source of the driving gear 14 can be a driving motor with mature technology. The rack 13 inside the guide rail 7 is used to fix the locking pin 15 between two adjacent teeth to achieve the effect of locking the device position.

[0039] When the device is working normally, the locking pin 15 is embedded between two adjacent teeth of the rack 13, and the device is locked. At this time, the drive motor does not work.

[0040] When it is detected that the liquid level in the air chamber of the device is too high, the driving motor drives the gear 14 counterclockwise to disengage the locking pin 15 from the rack 13, and after the water depth at the water inlet returns to a reasonable range through the floating plate 3, the driving motor starts again to drive the gear 14 to rotate clockwise, so that the locking pin 15 is embedded between two adjacent teeth of the rack 13, the locking is completed, and the motor is turned off.

[0041] On the contrary, when the liquid level in the air chamber is too small, the driving motor drives the gear 14 counterclockwise to disengage the locking pin 15 from the rack 13, and after the water depth at the water inlet of the device returns to a reasonable range through breeding, the driving motor is started again, and the driving motor starts again to drive the gear 14 to rotate clockwise, so that the locking pin 15 is embedded between two adjacent teeth of the rack 13, completing the locking, and the motor is turned off.

[0042] In other embodiments, the structure of the locking device 11 can be magnetic, for example, the locking device 11 has an electromagnet, and the inner wall of the guide rail 7 has a bar-shaped magnetic block that cooperates with the electromagnet. After the electromagnet is energized and attracted to the bar-shaped magnetic block, the height position of the OWC air chamber 1 can be locked. Other forms can also be used as long as the height position of the OWC air chamber 1 can be locked, which will not be described in detail here.

[0043] In the present application, the OWC air chamber 1 is connected to a buoyancy device, and a propulsion mechanism group is provided between the buoyancy device and the OWC air chamber 1 to propel the buoyancy device toward or away from the sea surface.

[0044] The buoyancy device is a floating plate 3. In this embodiment, the floating plate 3 can be a hollow nylon plate, which has high strength and good corrosion resistance, and is in the shape of a rectangular plate. In other embodiments, the floating plate 3 can also be a polymer foam plate and the outer surface is coated with a wrapping resin layer, which can also have corresponding corrosion resistance, but the strength is lower.

[0045] In this embodiment, three groups of floating plates 3 are provided, each group of floating plates 3 is connected to a group of pushing mechanism groups, and the number of floating plates 3 is determined according to the size of the OWC air chamber 1 and the buoyancy requirement.

[0046] A swing arm 8 is fixed to one side of the floating plate 3, and one end of the swing arm 8 away from the floating plate 3 is hinged to the outer surface of the OWC air chamber 1. One end of the active telescopic arm 9 is hinged to the outer surface of the OWC air chamber 1, and the other end of the active telescopic arm 9 is hinged to the side of the floating plate 3 away from the swing arm 8. In this embodiment, the active telescopic arm 9 adopts a hydraulic telescopic arm. In other embodiments, the active telescopic arm 9 can also adopt other forms such as a pneumatic telescopic arm. In another embodiment, the active telescopic arm 9 can be replaced by a steel wire rope, one end of which is hinged to the side of the OWC air chamber 1, and the other end of the steel wire rope is connected to an electric pulley. The steel wire rope is retracted and released by rotating the pulley to lift or lower the floating plate 3.

[0047] The lower end of the OWC air chamber 1 is provided with a counterweight 4, which can be in the form of a lead block, a stainless steel block, a solid nylon block or other high-density counterweight, or in the form of a steel block wrapped with a rubber film.

[0048] The OWC air chamber 1 has wave-forming plates 6 on both sides of the air chamber water inlet. The wave-forming plates 6 on both sides of the air chamber water inlet are arranged at an angle. The angle between the wave-forming plates 6 can be an acute angle or an obtuse angle. In special cases, the angle between the two wave-forming plates 6 can be vertical.

[0049] The specific implementation process of the floating plate type adaptive tide oscillation water column wave energy power generation device of the present application is as follows: before starting to work, the floating plate 3 is almost in contact with the limiting clamp 2, so that the floating plate 3 is parallel to the OWC air chamber 1.

[0050] When the water pressure monitoring device 5 detects that the water pressure at the water inlet of the air chamber is higher than the optimal range value, it means that the liquid level of the device is too large. At this time, the active telescopic arm 9 starts to work and extend, and slowly pushes the floating plate 3 to the water surface through the swing arm 8. After the floating plate 3 contacts the water surface, the OWC air chamber 1 will move upward with the guide rail under the influence of buoyancy. During the upward movement, the water pressure detection device 5 continues to work until the water pressure at the water inlet of the air chamber returns to a reasonable range. At this time, the locking device 11 located inside the guide rail 7 is started, and the locking block is inserted into the rack 12 on both sides of the guide rail to complete the device position locking. After the locking is completed, the active telescopic arm 9 will start to work and retract, and the floating plate 3 will be retracted to the initial position through the swing arm 8.

[0051] On the contrary, when the water pressure at the water inlet of the air chamber is lower than the optimal range, the locking device 11 will be unlocked, and the counterweight 4 located at the lower part of the air chamber will pull the air chamber to move downward along the guide rail until the water pressure at the water inlet of the air chamber returns to a reasonable range. The locking device 11 is started and the locking block is inserted into the rack 12 located on both sides of the guide rail to complete the position locking of the device.

[0052] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Any changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention should fall within the protection scope of the present invention.

Claims

1. A floating plate type self-adaptive tide-level oscillating water column wave energy power generation device, comprising an OWC air chamber (1), wherein the lower part of the side wall of the OWC air chamber (1) is provided with an air chamber water inlet; characterized in that: It also includes a guide rail (7); the OWC air chamber (1) is slidably mounted on the guide rail (7) and slides along the length extension direction of the guide rail (7); A sliding locking device is provided between the OWC air chamber (1) and the guide rail (7), and the OWC air chamber (1) slides or locks on the guide rail (7) through the sliding locking device; The OWC air chamber (1) is connected to a buoyancy device, and a propulsion mechanism group for propulsing the buoyancy device to move toward or away from the sea surface is provided between the buoyancy device and the OWC air chamber (1).

2. The floating plate type adaptive tide level oscillation water column wave energy power generation device according to claim 1 is characterized by: The lower end of the OWC air chamber (1) is provided with a counterweight (4).

3. The floating plate type adaptive tide level oscillation water column wave energy power generation device according to claim 1 is characterized by: It also includes an annular hoop (2), which is sleeved on the OWC air chamber (1) and fixed relatively to the OWC air chamber (1); The rear part of the clamp (2) is provided with a sliding locking device, the guide rail (7) has a groove body arranged along the length extension direction thereof, and the sliding locking device is installed in the groove body of the guide rail (7).

4. The floating plate type adaptive tide level oscillation water column wave energy power generation device according to claim 3 is characterized by: The sliding locking device comprises two water-breaking blocks (10) and a plurality of pulleys (12); The pulley (12) is rotatably connected to the hoop (2) via a wheel axle; the two water-breaking blocks (10) are fixed to the hoop (2), and all the pulleys (12) are located between the two water-breaking blocks (10).

5. The floating plate type adaptive tide level oscillation water column wave energy power generation device according to claim 4 is characterized by: The water-breaking block (10) is a wedge-shaped block, and one end of the water-breaking block (10) away from the pulley (12) has a pointed end; The side of the water-breaking block (10) is provided with a locking device (11); the inner sides of the guide rail (7) are respectively provided with racks (13) arranged in cooperation with the locking device (11).

6. The floating plate type adaptive tide level oscillation water column wave energy power generation device according to claim 1, characterized in that: The OWC air chamber (1) has wave condensing plates (6) on both sides of the air chamber water inlet respectively; the wave condensing plates (6) on both sides of the air chamber water inlet are arranged at an angle.

7. The floating plate type adaptive tide oscillation water column wave energy power generation device according to claim 1, characterized in that: The buoyancy device is a floating plate (3); A swing rod (8) is fixed to one side of the floating plate (3), and one end of the swing rod (8) away from the floating plate (3) is hinged to the outer surface of the OWC air chamber (1).

8. The floating plate type adaptive tide level oscillation water column wave energy power generation device according to claim 7 is characterized in that: The pushing mechanism group comprises an active telescopic arm (9), one end of the active telescopic arm (9) is hinged to the outer surface of the OWC air chamber (1), and the other end of the active telescopic arm (9) is hinged to a side of the floating plate (3) away from the swing rod (8).

9. The floating plate type adaptive tide level oscillation water column wave energy power generation device according to claim 1, characterized in that: It comprises a plurality of groups of buoyancy devices, all of which are arranged at intervals around the OWC air chamber (1); each group of buoyancy devices is connected to a group of propulsion mechanisms.

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