Oscillating water column array fan coupling power generation device capable of adapting to tide level change

Abstract

The invention discloses an oscillating water column array fan coupling power generation device capable of adapting to tide level changes, belongs to the field of energy utilization equipment, and solves the problems that in the prior art, the wave energy flow density of partial sea areas is low, and the power generation efficiency of an existing OWC wave energy conversion device is low. According to the technical scheme, an inner cavity is formed in the shared gas chamber; a plurality of oscillating water columns are arranged; each oscillating water column is a hollow tubular column body with openings in two ends, and the opening in one end of each oscillating water column is communicated with the inner cavity of the shared air chamber; and the inner cavity of the shared air chamber is communicated with the power input end of the turbine device. The system has the beneficial effects that multi-element energy utilization is realized, and different natural resources are fully utilized. And the volatility of the power system is reduced. When the output of the wind energy or the wave energy is unstable, the other energy may be in a high-output state, so that the power supply of the system is balanced, and the instability of the power system is reduced.

Description

Technical Field

[0001] The invention relates to an oscillating water column array fan-coupled power generation device capable of adapting to tidal level changes, and belongs to the field of energy utilization equipment. Background Art

[0002] The sea contains abundant wind and wave energy. Wave energy power generation devices can be divided into three categories according to their power generation principles: oscillating water column type (OWC), oscillating body type and overriding wave type. The oscillating water column type wave energy device has a simple structure, and the moving parts for energy conversion are all located above the water surface and do not contact the seawater. It has good anti-corrosion performance and is easy to maintain.

[0003] In the process of researching, developing and utilizing wave energy, it was found that the development of wave energy as a single energy source also has certain limitations. Therefore, combining offshore wind power generation makes it possible to couple wind turbines with wave energy generation devices. Oscillating water column wave energy devices are gradually coupled with foundation structures such as breakwaters and wind turbines, which improves the utilization rate of waves.

[0004] At present, the structural forms of oscillating water column wave energy devices include shore-based and offshore types, and the shapes include rectangular, U-shaped, cylindrical, etc. The air chamber structures include single air chamber and multiple air chambers. In view of the low wave energy flow density in some sea areas and the low power generation efficiency of existing OWC wave energy conversion devices, it is particularly important to design a natural energy-gathering array oscillating water column wave energy capture system that can gather wave resources from multiple aspects. Summary of the invention

[0005] In view of the problem of "low wave energy flow density in some sea areas and low power generation efficiency of existing OWC wave energy conversion devices" in the prior art, the present invention provides an oscillating water column array wind turbine coupled power generation device that can adapt to tidal changes, realize multi-energy utilization, and make full use of the advantages of different natural resources. Reduce the volatility of the power system. When the output of wind energy or wave energy is unstable, another energy source may be in a high output state, thereby balancing the power supply of the system and reducing the instability of the power system.

[0006] The technical solution adopted by the present invention is an oscillating water column array wind turbine coupled power generation device that can adapt to tidal changes, including a shared facility platform and an oscillating water column, wherein the oscillating water column is installed at the lower part of the shared facility platform;

[0007] It also includes a shared air chamber and a turbine device, wherein the shared air chamber has an internal cavity; the oscillating water column has a plurality of columns;

[0008] The oscillating water column is a hollow tubular column with openings at both ends, and one end opening of all oscillating water columns is connected to the internal cavity of the shared air chamber;

[0009] The inner cavity of the shared air chamber is communicated with the power input end of the turbine device.

[0010] Optimized, the above-mentioned oscillating water column array wind turbine coupled power generation device that can adapt to tidal changes, the shared facility platform is the pillar of the offshore wind power equipment platform.

[0011] Optimized, the above-mentioned oscillating water column array wind turbine coupled power generation device that can adapt to tidal changes, the lower end opening of the oscillating water column is a water inlet, and the water inlet of the oscillating water column is located on one side of the lower end of the oscillating water column;

[0012] A contraction water channel is provided at the water inlet of the oscillating water column; the opening size of the contraction water channel at one end close to the oscillating water column is smaller than the opening size of the contraction water channel at one end away from the oscillating water column.

[0013] Optimized, the above-mentioned oscillating water column array fan-coupled power generation device that can adapt to tidal changes, the upper end of the oscillating water column is an exhaust port, and the upper end of the oscillating water column is connected to the internal cavity of the shared air chamber.

[0014] Optimally, the above-mentioned oscillating water column array wind turbine coupled power generation device that can adapt to tidal changes, all oscillating water columns are arranged into several rows of oscillating water column groups;

[0015] Of the two adjacent groups of oscillating water column groups, the oscillating water column group on the wave-facing side is the front row; the pipe length of the oscillating water column of the front row oscillating water column group is shorter than the pipe length of the oscillating water column of the rear row oscillating water column group.

[0016] Optimally, in the above-mentioned oscillating water column array wind turbine coupled power generation device that can adapt to tidal changes, the oscillating water columns of two adjacent groups of oscillating water columns are staggered.

[0017] Optimized, the above-mentioned oscillating water column array wind turbine coupled power generation device that can adapt to tidal changes also includes an energy-gathering wall;

[0018] The wave-facing side of the energy-gathering wall is provided with a groove body, and all the oscillating water columns are relatively fixed to the energy-gathering wall and are arranged in coordination with the groove body of the energy-gathering wall.

[0019] Optimized, the above-mentioned oscillating water column array wind turbine coupled power generation device that can adapt to tidal changes, the energy-gathering wall is an arc-shaped plate, and the groove body of the energy-gathering wall is an arc-shaped groove of the arc-shaped plate;

[0020] The arc section of the energy-gathering wall is a parabolic arc.

[0021] Optimized, the above-mentioned oscillating water column array wind turbine coupled power generation device that can adapt to tidal changes has a pulley-type connection system between the energy-gathering wall and the shared facility platform that drives the energy-gathering wall to move longitudinally along the shared facility platform.

[0022] Optimally, the above-mentioned oscillating water column array wind turbine coupled power generation device that can adapt to tidal changes also includes a water level monitor;

[0023] The opening where the oscillating water column communicates with the internal cavity of the shared air chamber has a closing door for opening or closing the opening;

[0024] The control output end of the water level monitor is electrically connected to the control input end of the closed door.

[0025] The beneficial effects of this application are:

[0026] The technical solution of this application realizes the hybrid power generation of wind energy and wave energy. The wind turbine platform is used as a supporting structure, and the wave energy device is connected to it, which initially realizes the combination of wind energy and wave energy power generation devices, fully utilizes the characteristics of the two energy sources, reduces the intermittent nature of the power generation of the two energy sources, and can improve the reliability of the energy system.

[0027] The technical solution of this application shares infrastructure, relies on existing infrastructure to arrange wave energy power generation devices, reduces the installation cost and use cost of wave energy equipment, and thus reduces the cost per kilowatt-hour. In addition, the wind turbine platform, as a shared infrastructure for the composite device, transmits the electricity generated by wind and wave energy to the same location through a common cable arrangement system, thereby improving energy concentration and utilization efficiency while reducing costs.

[0028] The technical solution of the present application provides a design that adapts to tide levels. The design of several oscillating water columns of different lengths can adapt to different tide levels and wave heights, so that the device has the ability to work continuously under tidal changes; the orderly arrangement of several oscillating water columns according to length can further improve the utilization rate of different wave heights.

[0029] The technical solution of the present application uses an energy-gathering wall design. Through the design of the energy-gathering wall device, the mechanical energy of the waves can be gathered into a small range, thereby increasing the energy density and making the energy easier to capture and convert.

[0030] The technical solution of the present application has a coordinated control system, which controls the pulley link system and cover structure of the energy-gathering wall through the coordinated system, thereby solving the problem of tidal changes, ensuring stable energy collection and conversion, and increasing the sustainability of the device.

[0031] The technical solution of the present application improves the overall wave energy conversion of the system by achieving exponential amplification of the captureable wave energy. Array layout: When waves pass through the two rows of OWC arrays, each device can capture the energy of the waves. Through combined action, multiple devices in the array can jointly convert wave energy into electrical energy. Hydrodynamic interaction between devices: Each OWC device in the array can affect the waves around it because they change the way the waves propagate. One device may cause other surrounding devices to capture more wave energy. Layout optimization: When setting the OWC array layout, consideration has been given to how to maximize the use of wave energy, and a wave-focusing wall has been introduced to further concentrate the captureable wave energy on the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is the overall structure diagram of this application;

[0033] Figure 2 It is the structural diagram of the shared facility platform;

[0034] Figure 3 is a structural diagram of a wave energy device;

[0035] Figure 4 The specific structure of the pulley type link system;

[0036] Figure 5 This is a top view of the structure of the wave energy device;

[0037] Figure 6 is the plane view of the oscillating water column, DETAILED DESCRIPTION

[0038] The technical features of the present invention are further described below in conjunction with the accompanying drawings and specific embodiments.

[0039] The present application discloses an oscillating water column array wind turbine coupled power generation device that can adapt to changes in tidal levels, wherein the shared facility platform 1 is an offshore wind power equipment platform, wherein the oscillating water column array wind turbine coupled power generation device that can adapt to changes in tidal levels is externally connected to the offshore wind power equipment platform through a process, and the offshore wind power equipment platform is used as a supporting structure of the multi-resonance oscillating water column power generation device, thereby realizing a preliminary combination of a wind turbine and a wave energy power generation device.

[0040] The oscillating water column array wind turbine coupled power generation device that can adapt to tidal changes in the present application includes an oscillating water column 2, a shared air chamber 3, a turbine device 4, an energy-gathering wall 5, a pulley-type link system, a closed door 6, and a water level monitor 7.

[0041] In this embodiment, there are 11 oscillating water columns 2, and the oscillating water columns 2 are hollow tubular columns with openings at both ends. The lower end opening of the oscillating water column 2 is a water inlet, and the water inlet of the oscillating water column 2 is located on one side of the lower end of the oscillating water column 2. The water inlet of the oscillating water column 2 has a contraction water channel 201, and the opening size of the contraction water channel 201 close to one end of the oscillating water column 2 is smaller than the opening size of the contraction water channel 201 away from the end of the oscillating water column 2. The upper end of the oscillating water column 2 is an exhaust port, and the upper end of the oscillating water column 2 is connected to the internal cavity of the shared air chamber 3. All oscillating water columns 2 share a shared air chamber 3. Under the action of waves, the gas in the tube is squeezed and transmitted to the shared air chamber 3. The internal cavity of the shared air chamber 3 is connected to the power input end of the turbine device 4 to achieve energy conversion.

[0042] In the present application, all the oscillating water columns 2 can be arranged into several rows of oscillating water column groups. In this embodiment, all 11 oscillating water columns 2 are arranged in two rows, with the wave-facing side as the front, and the arrangement is 5 oscillating water columns 2 in the front row and 6 oscillating water columns 2 in the back row.

[0043] In order to adapt to the constant changes in tide level during the day, the length of the 6 oscillating water columns 2 in the back row is designed to be longer, and the length of the 5 oscillating water columns 2 in the front row is designed to be shorter. The length of the oscillating water columns 2 is designed according to local tide and wave data, so that the device can effectively adapt to local tide level changes.

[0044] In tidal areas, oscillating water column wave energy power generation devices of varying lengths can make full use of the water flow and wave energy brought about by tidal changes, thereby obtaining more power generation time and higher energy utilization within a day.

[0045] The front and rear rows of devices are arranged at intervals, and each oscillating water column 2 in the front row is in the gap between the two oscillating water columns 2 in the rear row, and will not affect the energy acquisition of the rear row.

[0046] In order to prevent problems that occur when the tide is too low, that is, the front row device may be higher than the sea level, thereby affecting the closed air chamber design of the shared air chamber, measures need to be taken to ensure the continuous operation and efficiency of the power generation system. In this embodiment, the opening where the oscillating water column 2 communicates with the internal cavity of the shared air chamber 3 has a closed door 6 that opens or closes the opening, and the control output end of the water level monitor 7 is electrically connected to the control input end of the closed door 6. The closed door 6 can use an electrically controlled cover device, and the electrically controlled opening and closing part of the closed door 6 can be an electrically controlled hydraulic tappet or a telescopic motor tappet. The control input end of the electrically controlled opening and closing part of the closed door 6 is electrically connected to the control output end of the coordinated control system.

[0047] The coordination control system and the electrical room are both located on the shared facility platform 1. The coordination control system is an intelligent control system that cooperates with the water level detector to control the opening and closing of the closed door on the top of the OWC. The working principle of the OWC is that the seawater reciprocates up and down in the air chamber to compress and expand the air in the air chamber to create a pressure difference between it and the external atmosphere, thereby forcing the gas in the air chamber to flow out or flow in through the pipe connected to the external atmosphere. The air turbine in the pipe is driven by the air to rotate and drive the generator to generate electricity. If the closed door 6 cannot be closed in time, the shared air chamber will be connected to the atmosphere, there will be no pressure difference, and power generation cannot be achieved.

[0048] The closed door 6, the water level monitor 7 and the coordinated control system cooperate with each other. The water level monitor 7 is located at the upper end of the bottom opening of the OWC. When the water level monitor 7 is in the water, the entire OWC system has only one pipe in the shared air chamber connected to the atmosphere, and the device can work normally. When the water level is lower than the water level monitor 7, the water level monitor 7 sends a signal to the coordinated control system to control the closing of the closed door to prevent the shared air chamber from connecting to the atmosphere through the bottom opening, so that the pressure in the air chamber is equal to the atmospheric pressure.

[0049] In the figure, the detection end 701 of the water level monitor 7 extends to the upper end of the opening of the contraction water channel 201 at the bottom of the oscillating water column 2, and is used to monitor whether the water level can completely submerge the opening of the contraction water channel 201. The water level monitor 7 receives signals and cooperates with the coordination control system.

[0050] In the present application, the water level change is monitored by the water level monitor 7. When the water level is about to fall below the bottom opening, the closed door 6 is closed, so that the rear row device can still form a closed air chamber with the shared air chamber to generate electricity. This improvement allows the air chamber to still effectively collect and utilize the volume change of gas to generate electricity when the tide is low. Through this adaptive design, the system can still maintain effective air chamber operation even at low tide, thereby ensuring stable collection and conversion of energy, and further improving the overall performance and sustainability of the oscillating water column wave energy power generation device.

[0051] In the application, the coordinated control system can be arranged in the coordinated control room 102, and the control end of the coordinated control system is electrically connected to the control end of the electrical device in the electrical room 101 to realize the electrical coordinated control of each part.

[0052] In the present application, the energy-gathering wall 5 adopts a parabolic energy-gathering wall panel, and the oscillating water column 2 is collected and fixedly installed with the energy-gathering wall 5 through a fan-shaped plate.

[0053] The energy-gathering wall 5 is designed to be parabolic, and the arc formed by the parabola can effectively collect waves from multiple directions, and focus the reflected waves on a specific area to form a wave energy enrichment area. The parabolic energy-gathering wall 5 can be applied to sea areas with low wave energy flow density to achieve a multiple amplification of the wave energy that can be stopped, thereby improving the overall wave energy conversion efficiency of the wave energy device. Oscillating water columns 2 are arranged in different wave energy enrichment areas of the parabolic energy-gathering wall 5, and the oscillating water columns 2 form an array, thereby maximizing the utilization of wave energy and reducing the cost of electricity by sharing infrastructure.

[0054] In order to solve the problem that the energy-gathering wall 5 cannot effectively gather waves when the tide is too low, the solution is to install a pulley-type link system behind the energy-gathering wall 5, which drives the energy-gathering wall 5 to move longitudinally along the shared facility platform 1. When the tide drops or rises, causing the energy-gathering wall 5 to be partially or completely exposed above or below the water surface, the coordination system in the shared infrastructure will intervene to control the energy-gathering wall 5 to move up and down along the pulley to maintain a suitable position. This system ensures that the energy-gathering wall 5 is always in the best position on the water surface, whether it is at the peak or the trough of the tide.

[0055] The pulley link system of the present application includes a gear 8 and a chain. The chain is installed on the side of the shared facility platform 1 along the lifting direction of the energy focusing wall 5, and the gear 8 is installed on one side of the energy focusing wall 5, and the gear 8 is meshed with the chain. The gear 8 can be driven to rotate by a motor, thereby driving the energy focusing wall 5 to move up and down. A guide rail can be provided between the energy focusing wall 5 and the side of the shared facility platform 1, and the guide rail is used to limit the relative movement direction between the energy focusing wall 5 and the shared facility platform 1, and to provide a certain support to the energy focusing wall 5.

[0056] Through the design of this pulley-type link system, the energy-gathering wall 5 can be intelligently adjusted to adapt to different tidal water levels. When the tide is low, the energy-gathering wall can be lowered below the water surface to avoid the problem of not being able to gather waves. When the tide is high, the energy-gathering wall can be raised above the water surface to maximize the capture of wave energy. The application of this mechanism can effectively reduce the loss of energy during transmission and ensure that more wave energy is captured and converted into electrical energy.

[0057] The energy-gathering wall design with a pulley-type link system can not only solve the problem when the tide is too low, but also adjust the position of the energy-gathering wall more accurately to achieve more effective wave energy aggregation. This will improve power generation efficiency, optimize the energy conversion process, and bring greater potential for the sustainable use of marine energy.

[0058] After the energy-gathering wall 5 and the oscillating water column 2 are aggregated, the front row of oscillating water columns 2 need to be optimized again to ensure that the air tightness of the entire device will not be affected regardless of changes in the tidal position. The optimization mainly includes installing a closed door 6 and a water level monitor 7 at the top opening of the front row of oscillating water columns 2, and the detection end 701 of the water level monitor 7 extends to the upper end of the opening of the contraction water channel 201 at the bottom of the oscillating water column 2. The detector monitors the change of the water level. When the water level is about to be lower than the bottom opening, the closed door 6 is closed. When the water level again steadily exceeds the detector, the closed door 6 is opened, so that the oscillating water column 2 can always form a closed air chamber with the shared air chamber for power generation.

[0059] The shared air chamber 3 is a hollow body, which is connected to the turbine device 4 on the wind turbine platform. The coordinated control system and the electrical room are connected to the turbine device 4. The coordinated control system is mainly responsible for the lifting and lowering of the wave-gathering wall and other secondary functions. The electrical room contains a cable arrangement system that can transmit the electricity generated by wind energy and wave energy to the same location.

[0060] Finally, the combination of the integral tubular oscillating water column wave energy device and the wind turbine platform requires the use of pillars to connect the two to ensure the overall stability of the tubular oscillating water column wave energy device. After the combination, an appropriate monitoring and management system needs to be established to monitor the performance and operation of the device. This includes regular inspections and evaluations of wave energy conversion efficiency, power output, equipment status, etc. to ensure the normal operation and maintenance of the array.

[0061] 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. An oscillating water column array wind turbine coupled power generation device that can adapt to tidal changes, comprising a shared facility platform (1) and an oscillating water column (2), wherein the oscillating water column (2) is installed at the lower part of the shared facility platform (1); characterized in that: It also includes a shared air chamber (3) and a turbine device (4), wherein the shared air chamber (3) has an internal cavity; the oscillating water column (2) has a plurality of columns; The oscillating water column (2) is a hollow tubular column with openings at both ends, and one end opening of all the oscillating water columns (2) is connected to the internal cavity of the shared air chamber (3); The internal cavity of the shared air chamber (3) is in communication with the power input end of the turbine device (4).

2. The oscillating water column array wind turbine coupled power generation device capable of adapting to tidal level changes according to claim 1 is characterized in that: The shared facility platform (1) is a support column for an offshore wind power equipment platform.

3. The oscillating water column array wind turbine coupled power generation device capable of adapting to tidal level changes according to claim 1 is characterized in that: The lower end opening of the oscillating water column (2) is a water inlet, and the water inlet of the oscillating water column (2) is located on one side of the lower end of the oscillating water column (2); The water inlet of the oscillating water column (2) is provided with a contraction water channel (201); the opening size of the contraction water channel (201) at one end close to the oscillating water column (2) is smaller than the opening size of the contraction water channel (201) at one end away from the oscillating water column (2).

4. The oscillating water column array wind turbine coupled power generation device capable of adapting to tidal level changes according to claim 1 is characterized in that: The upper end of the oscillating water column (2) is an exhaust port, and the upper end of the oscillating water column (2) is connected to the internal cavity of the shared air chamber (3).

5. The oscillating water column array wind turbine coupled power generation device capable of adapting to tidal level changes according to claim 1 is characterized in that: All the oscillating water columns (2) are arranged into a plurality of rows of oscillating water column groups; Of the two adjacent groups of oscillating water column groups, the oscillating water column group on the wave-facing side is the front row; the pipe length of the oscillating water column (2) of the front row oscillating water column group is shorter than the pipe length of the oscillating water column (2) of the rear row oscillating water column group.

6. The oscillating water column array wind turbine coupled power generation device capable of adapting to tidal level changes according to claim 5 is characterized in that: The oscillating water columns (2) of two adjacent oscillating water column groups are arranged in a staggered manner.

7. The oscillating water column array wind turbine coupled power generation device capable of adapting to tidal level changes according to claim 1 is characterized in that: Also includes an energy-gathering wall (5); The wave-facing side of the energy-gathering wall (5) is provided with a groove body, and all the oscillating water columns (2) are relatively fixed to the energy-gathering wall (5) and are arranged in coordination with the groove body of the energy-gathering wall (5).

8. The oscillating water column array wind turbine coupled power generation device capable of adapting to tidal level changes according to claim 7 is characterized in that: The energy-gathering wall (5) is an arc-shaped plate, and the groove body of the energy-gathering wall (5) is an arc-shaped groove of the arc-shaped plate; The arc-shaped cross section of the energy-gathering wall (5) is a parabolic arc.

9. The oscillating water column array wind turbine coupled power generation device capable of adapting to tidal level changes according to claim 7 is characterized in that: A pulley-type link system is provided between the energy-gathering wall (5) and the shared facility platform (1) for driving the energy-gathering wall (5) to move longitudinally along the shared facility platform (1).

10. The oscillating water column array wind turbine coupled power generation device capable of adapting to tidal level changes according to claim 1 is characterized in that: Also includes a water level monitor (7); The opening where the oscillating water column (2) communicates with the internal cavity of the shared air chamber (3) is provided with a closing door (6) for opening or closing the opening; The control output end of the water level monitor (7) is electrically connected to the control input end of the closed door (6).

Images