Double-air-chamber floating oscillating water column type wave energy power generation device

Abstract

The invention discloses a double-air-chamber floating oscillating water column type wave energy power generation device which comprises a front air chamber oscillating water column module, a rear air chamber oscillating water column module, a buoyancy cabin module and a turbine generator set module, the front air chamber oscillating water column module and the rear air chamber oscillating water column module are adjacently connected in an attached mode, and a first pipeline and a second pipeline are arranged in the front air chamber oscillating water column module and the rear air chamber oscillating water column module respectively. A first pipeline water inlet and a second pipeline water inlet are formed in the buoyancy cabin module, turbine generator set modules are arranged on the tops of the buoyancy cabin module and the buoyancy cabin module is connected with the front air chamber oscillating water column module or the rear air chamber oscillating water column module. By arranging the front air chamber and the rear air chamber and utilizing multi-degree-of-freedom vibration of a water column and a floating body, efficient wave energy capture of different wave periods is achieved, the wave absorbing response range is expanded, and the conversion efficiency under irregular waves is improved. Water column oscillation phases in the front and back air chambers are different, different air flows are output, the defect of large output power fluctuation of a one-way turbine can be overcome, and the stability of output electric energy is improved.

Description

Technical Field

[0001] The invention relates to the technical field of marine renewable energy utilization, and in particular to a double-air-chamber floating oscillating water column type wave energy power generation device. Background Art

[0002] The world's available wave energy is 2 billion kW, which is a considerable amount. my country has a vast territorial sea with rich marine resources, and wave energy is inexhaustible. my country's wave energy resources are considerable, with the offshore wave energy content reaching about 150 million kW, and the exploitable amount is about 23 to 35 million kW. These figures and information show that wave energy has great development potential and utilization value as a renewable energy source.

[0003] It involves wave energy capture, and the principle of wave energy capture involves the process of capturing energy from waves through specific devices. This process includes the design of wave energy converters, which can capture energy by using the up and down oscillation and left and right swinging of waves. The captured wave energy is then converted into usable energy forms such as electrical energy or mechanical energy through internal mechanisms. The indicators of wave energy capture characteristics include capture width ratio and energy capture efficiency. The capture width ratio is an important parameter and indicator for measuring the wave energy capture characteristics of the device. The capture width ratio is defined as the ratio of the wave energy captured by the float to the wave energy of the incident wave within the width of the float. It reflects the ability of the device to capture wave energy under specific conditions; the energy capture efficiency is an indicator for measuring the energy conversion efficiency of the wave energy power generation system. It indicates the ability of the device to convert wave energy into electrical energy. The level of energy capture efficiency directly affects the performance and economic benefits of the device. Wave energy devices can capture and utilize wave energy more effectively, improve energy utilization efficiency, improve energy capture efficiency, and reduce the operating cost of wave energy power generation systems. By improving the efficiency and stability of the device, the frequency of maintenance and replacement of equipment can be reduced, and maintenance costs can be reduced.

[0004] At present, the utilization of ocean wave energy is mainly focused on the research and development of wave energy power generation technology. Among the many wave energy power generation devices, the oscillating water column wave energy power generation device stands out for its unique energy conversion method and good environmental adaptability. The oscillating water column wave energy power generation device uses the oscillating motion of the water column to compress the exhaust or extract the air like a piston to form a reciprocating airflow, and then uses the airflow to drive the turbine to achieve energy conversion. This device has a simple structure, easy maintenance, and high reliability, but the conversion efficiency is relatively low. Only when the wave period is close to or reaches the resonant period of the water column, the oscillating water column wave energy device can efficiently capture and convert wave energy. However, the actual waves are complex and changeable, and are composed of waves of multiple different periods. It is difficult for the device to operate continuously in the high-efficiency range, which reduces the wave capture performance.

[0005] Therefore, there is an urgent need for a double-air-chamber floating oscillating water column wave energy power generation device to solve the problem of relatively low conversion efficiency of the oscillating water column wave energy power generation device under actual irregular waves. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a double-air-chamber floating oscillating water column type wave energy power generation device to solve the problem that the conventional oscillating water column type wave energy power generation device has relatively low conversion efficiency under irregular waves.

[0007] To achieve the above object, the present invention adopts the following technical solutions: A double-chamber floating oscillating water column wave energy power generation device, characterized in that it includes a front air chamber oscillating water column module, a rear air chamber oscillating water column module, a buoyancy chamber module and a turbine generator set module, the front air chamber oscillating water column module and the rear air chamber oscillating water column module are adjacent to each other and are connected in a close fit, a first pipe is provided inside the front air chamber oscillating water column module, a second pipe is provided inside the rear air chamber oscillating water column module, and the front air chamber oscillating water column module and the rear air chamber oscillating water column module are respectively provided with a first pipe water inlet and a second pipe water inlet which are arranged opposite to each other and located below the water surface, the tops of the front air chamber oscillating water column module and the rear air chamber oscillating water column module located above the water surface are respectively provided with a turbine generator set module connected to the first pipe and the second pipe, the buoyancy chamber module is connected to the front air chamber oscillating water column module or the rear air chamber oscillating water column module, and is used to maintain an oscillating water column in the first pipe and the second pipe with a liquid level lower than the top of the inner cavity of the first pipe and the second pipe, respectively.

[0008] To optimize the above technical solutions, the specific measures taken also include: Furthermore, the front air chamber oscillating water column module and the rear air chamber oscillating water column module are connected to a common wall surface adjacent to the first pipe and the second pipe.

[0009] Furthermore, the first pipeline is a first vertical pipeline, the lower end of the first vertical pipeline is provided with a first pipeline water inlet located below the water surface, the upper end of the first vertical pipeline is connected to the turbine generator module, the second pipeline is an L-shaped pipeline, the L-shaped pipeline is composed of a second vertical pipeline and a transverse pipeline, the end of the transverse pipeline away from the first pipeline water inlet is located below the water surface and is provided with a second pipeline water inlet, the second vertical pipeline is connected to the transverse pipeline and the upper end is connected to the turbine generator module.

[0010] Furthermore, the first vertical pipe and the second vertical pipe are both rectangular pipes with equal pipe widths, and the second vertical pipe and the transverse pipe have equal cross-sectional areas.

[0011] Furthermore, the buoyancy tank module includes a main buoyancy tank module and a secondary buoyancy module. The main buoyancy tank module is arranged above the top wall of the transverse pipe of the L-shaped pipe and forms a whole with the L-shaped pipe. The secondary buoyancy module is arranged in the middle of the bottom ends of the front air chamber oscillation water column module and the rear air chamber oscillation water column module.

[0012] Furthermore, the main buoyancy tank module is a pentagonal prism, and the end away from the front air chamber oscillation water column module is a triangular tip. The interior of the main buoyancy tank module is a hollow structure and is divided into multiple cabins, and hatch covers are provided above the cabins.

[0013] Furthermore, the auxiliary buoyancy module is of a triangular prism type, a side edge of the triangular prism type auxiliary buoyancy module is arranged between the front air chamber oscillation water column module and the rear air chamber oscillation water column module, and the interior of the auxiliary buoyancy module is a hollow structure and is fully enclosed.

[0014] Furthermore, the turbine generator set module includes a first turbine generator set and a second turbine generator set, the first turbine generator set is arranged at the top of the front air chamber oscillation water column module and is connected to the first pipeline through a pipeline, and the second turbine generator set is arranged at the top of the rear air chamber oscillation water column module and is connected to the second pipeline through a pipeline.

[0015] Furthermore, it also includes an anchoring system, which includes an anchor, an anchor chain and an anchor windlass. The anchor windlass is installed on the buoyancy compartment module, and is connected to an extendable or retractable anchor chain. The end of the anchor chain away from the anchor windlass is connected to an anchor.

[0016] Furthermore, the mooring system is provided with three groups, and the three groups of mooring systems are respectively arranged on the left and right sides of the buoyancy chamber module and on the side away from the water inlet of the first pipe.

[0017] The beneficial effects of the present invention are: The present invention arranges a front air chamber oscillating water column module, a rear air chamber oscillating water column module and a buoyancy chamber module, so that a front air chamber and a rear air chamber located above the oscillating water column can be formed in the first pipe and the second pipe respectively. Through the arrangement of the front air chamber and the rear air chamber, the front air chamber and the rear air chamber can absorb waves of different periods respectively, and the buoyancy chamber module is used to carry the device under the action of waves to capture wave energy, broaden the response wave period range, and thus improve the conversion efficiency of the device under irregular waves in real sea conditions. Under the action of low-period waves, the movement response of the entire device is small, but the opening of the front air chamber can face the direction of the incoming wave, the water column is directly affected by the waves, and has a high-frequency resonance period. The water column tends to resonate and captures wave energy with high efficiency. At the same time, the front air chamber can also absorb the energy of the reflected wave on the front wall of the rear air chamber to improve the capture performance. When the wave period increases, the motion response of the entire device increases, and the wave energy can be captured and absorbed through the vertical swing, vertical swing and pitch motion of the floating body. Since the second pipe opens backward, the water column in the pipe is less affected by the waves. The buoyancy module carries the pipe to produce relative motion with the water column in the pipe to form an oscillating water column, which will have three resonance periods. Therefore, this technology can broaden the effective response period range of the wave energy device, so that it has a higher conversion efficiency under irregular waves in actual sea conditions.

[0018] The oscillating water columns in the first pipe and the second pipe of the present invention promote the reciprocating motion of the air in the front air chamber and the rear air chamber. Since the phases of the oscillating motion of the water columns under the two air chambers are different, when one air chamber is in the intake stage, the other air chamber is in the exhaust or intake stage, which can make up for the disadvantage of large fluctuations in the output power of the one-way turbine and improve the stability of the output electrical energy; at the same time, the first pipe water inlet and the second pipe water inlet arranged opposite to each other can cause the oscillating water column in the second pipe to change when the front air chamber receives the incident wave and changes, because the device is in a floating state, thereby further increasing the energy acquisition efficiency; in addition, the front air chamber can also effectively absorb the reflected wave energy from the rear air chamber and its adjacent wall, so as to further improve the performance of the device.

[0019] The present invention adopts a double air chamber structure, and under the action of low-period waves, realizes the characteristics of the fixed oscillating water column device to efficiently capture wave energy, and uses the front air chamber to improve the capture width ratio of the device; under the action of large-period waves, the overall swaying motion of the floating motion oscillating water column device can be realized to participate in the absorption of wave energy, and has the characteristics of the antenna "wave gathering" effect, which can significantly improve the capture width ratio of the device. Therefore, by increasing the number of degrees of freedom of movement of the oscillating water column device that effectively participates in wave energy capture, the number of effective resonance periods is increased, so that it has a higher capture performance within a wider wave period range, so that in random waves, the device has a wider effective wave absorption response period range, and can better adapt to real sea conditions. The size and aerodynamic damping of the two air chambers can be reasonably adjusted according to the changes in the waves in the sea area, so that it is always in the best response state to obtain a higher conversion efficiency.

[0020] The present invention is equipped with two sets of turbine generator sets, which can not only reduce the failure rate but also improve the power generation characteristics of the device. Since the phases of the oscillating motion of the water column under the two air chambers are different, when one air chamber is in the intake stage and the other air chamber is in the exhaust stage, this can make up for the disadvantage of large output power fluctuation of the one-way turbine and improve the stability of the output electric energy. The efficient design of the two sets of air turbine generator sets used in the double air chambers, the two sets can optimize and complement each other to share a set of loads and control circuits, so that the turbine generator sets can effectively operate under rated conditions, ensuring the stability and efficiency of the sets.

[0021] The turbine generator module of the present invention does not come into direct contact with seawater, thereby avoiding corrosion from seawater and improving the reliability of the device.

[0022] The present invention uses a floating structure of a main buoyancy tank module and an auxiliary buoyancy module, which reduces the movement resistance of the device, improves the swaying motion response characteristics of the L-shaped pipeline under the action of waves, reduces the energy loss of transmitted waves and the energy loss of radiation waves caused by the movement of the device, and greatly improves its primary conversion performance.

[0023] The front air chamber oscillating water column module and the rear air chamber oscillating water column module of the present invention are adjacently connected, and are respectively provided with a first pipe with an opening facing forward and a second pipe with an opening facing backward. Under the action of low-period waves, the floating body motion response is weak, and the wave energy is absorbed by the active oscillating motion of the water column in the front air chamber, and the reciprocating airflow is output to drive the air turbine unit to generate electricity; when the wave period becomes larger and the floating body motion response is enhanced, the wave energy is captured by the relative movement of the water column in the L-shaped pipe of the rear air chamber. The device realizes efficient wave energy capture of different wave periods through the multi-degree-of-freedom vibration of the water column and the floating body, expands the wave absorption response range, and improves the conversion efficiency under irregular waves. The multi-degree-of-freedom vibration of the water column and the floating body is used to realize efficient wave energy capture of different wave periods, expand the wave absorption response range, and improve the conversion efficiency under irregular waves. The phases of the oscillation of the water column in the front and rear air chambers are different, and different airflows are output, which can make up for the disadvantage of large output power fluctuation of the one-way turbine and improve the stability of the output electric energy. The invention has a simple and reliable structure and high power generation efficiency, and can promote the development of pneumatic wave energy technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of the use of a double-air-chamber floating oscillating water column type wave energy power generation device proposed by the present invention; Figure 2 This is a schematic diagram of the overall structure of a double-air-chamber floating oscillating water column type wave energy power generation device proposed by the present invention; Figure 3 This is a cross-sectional view of the overall structure of a double-air-chamber floating oscillating water column type wave energy power generation device proposed by the present invention; Figure 4This is a top view of the overall structure of a double-air-chamber floating oscillating water column type wave energy power generation device proposed by the present invention.

[0025] Figure markings: 1-front air chamber oscillating water column module; 2-rear air chamber oscillating water column module; 3-buoyancy compartment module; 4-turbine generator set module; 5-anchoring system; 11-front air chamber; 12-first oscillating water column; 131-first vertical pipe; 132-front wall of first vertical pipe; 21-rear air chamber; 22-second oscillating water column; 23-L-shaped pipe; 231-second vertical pipe; 232-lateral pipe; 31-main buoyancy compartment module; 32-auxiliary buoyancy module; 41-first turbine generator set; 42-second turbine generator set; 51-anchor; 52-anchor chain; 53-anchor windlass. DETAILED DESCRIPTION

[0026] The present invention will now be described in further detail with reference to the accompanying drawings.

[0027] As attached Figure 1 and attached Figure 2 As shown, a double-chamber floating oscillating water column type wave energy power generation device according to an embodiment of the present invention comprises a front air chamber oscillating water column module 1, a rear air chamber oscillating water column module 2, a buoyancy chamber module 3 and a turbine generator set module 4, the front air chamber oscillating water column module 1 and the rear air chamber oscillating water column module 2 are adjacently and closely connected, a first pipe is arranged inside the front air chamber oscillating water column module 1, a second pipe is arranged inside the rear air chamber oscillating water column module 2, and a first pipe water inlet and a second pipe water inlet which are arranged opposite to each other and located below the water surface are respectively opened on the front air chamber oscillating water column module 1 and the rear air chamber oscillating water column module 2, the top of the front air chamber oscillating water column module 1 and the rear air chamber oscillating water column module 2 which are located above the water surface are respectively provided with a turbine generator set module 4 which is connected to the first pipe and the second pipe, and the buoyancy chamber module 3 is connected to the front air chamber oscillating water column module 1 or the rear air chamber oscillating water column module 2, and is used to maintain an oscillating water column in the first pipe and the second pipe with a liquid level lower than the top of the inner cavity of the first pipe and the second pipe respectively.

[0028] The present invention arranges the front air chamber oscillating water column module 1, the rear air chamber oscillating water column module 2 and the buoyancy chamber module 3, so that the front air chamber 11 and the rear air chamber 21 located above the oscillating water column can be formed in the first pipe and the second pipe respectively. The arrangement of the front air chamber 11 and the rear air chamber 21 can absorb low-period waves, and the swaying motion of the buoyancy chamber module 3 carrying the device under the action of waves can be used to capture wave energy. Alternatively, the front air chamber 11 absorbs low-period waves, and the rear air chamber 21 uses the swaying motion of the buoyancy chamber module 3 carrying the device under the action of waves to capture wave energy. The oscillating water column in the pipe drives the air in the front air chamber 11 and the rear air chamber 21 to reciprocate. Since the phases of the oscillating motion of the water columns under the two air chambers are different, when one air chamber is in the intake stage, the other air chamber is in the exhaust or intake stage, which can make up for the shortcoming of large fluctuation in output power of the one-way turbine and improve the stability of the output electric energy; at the same time, the first pipe water inlet and the second pipe water inlet arranged opposite to each other can cause the oscillating water column in the second pipe to change when the front air chamber 11 receives the incident wave and changes, because the device is in a floating state, thereby further increasing the energy acquisition efficiency; in addition, the front air chamber 11 can also effectively absorb the reflected wave energy from the rear air chamber 21 and its adjacent wall, so as to further improve the performance of the device.

[0029] In this embodiment, the buoyancy compartment module and the front and rear air chamber oscillation water column modules are welded together to form the entire floating body.

[0030] In another specific embodiment, the front air chamber oscillating water column module 1 and the rear air chamber oscillating water column module 2 are connected to a common wall surface adjacent to the first pipe and the second pipe. Thus, by sharing a common wall surface, energy transfer and absorption can be better achieved.

[0031] In another specific embodiment, the first pipe is a first vertical pipe 131, the lower end of the first vertical pipe 131 is provided with a first pipe water inlet located below the water surface, the upper end of the first vertical pipe 131 is connected to the turbine generator module 4, the second pipe is an L-shaped pipe 23, the L-shaped pipe 23 is composed of a second vertical pipe 231 and a transverse pipe 232, the end of the transverse pipe 232 away from the first pipe water inlet is located below the water surface and is provided with a second pipe water inlet, the second vertical pipe 231 is connected to the transverse pipe 232 and the upper end is connected to the turbine generator module 4.

[0032] Specifically, the first vertical pipe 131 is located above the first pipe water inlet, and the first vertical pipe front wall 132 is partially located below the water surface. Seawater enters the first vertical pipe 131 through the first pipe water inlet below the first vertical pipe front wall 132 to form a first oscillating water column 12. The transverse pipe 232 is located below the water surface, and seawater enters the L-shaped pipe 23 through the second pipe water inlet to form a second oscillating water column 22. That is, a front air chamber 11 is formed above the waterline in the first pipe, a first oscillating water column 12 is formed below the waterline in the first pipe, a rear air chamber 21 is formed above the waterline in the second pipe, and a second oscillating water column 22 is formed below the waterline in the second pipe.

[0033] In this embodiment, the first pipe water inlet of the first vertical pipe 131 of the front air chamber oscillating water column module 1 can be set to face the incoming wave direction, and the second pipe water inlet of the rear air chamber oscillating water column module 2 can face away from the incoming wave direction and connect to the seawater. When in use, the first pipe water inlet directly faces the incoming wave direction, so that the first oscillating water column 12 can be directly affected by the waves, thereby generating a high-frequency resonance cycle. In addition, the front air chamber 11 can also effectively absorb the energy of the reflected wave from the front wall of the rear air chamber 21, further improving its performance; while the rear air chamber 21 is located in the second vertical pipe 231 of the L-shaped pipe 23, and the movement of the second oscillating water column 22 inside it can be affected by the movement of the floating body, generating a unique relative movement, thereby forming another resonance cycle. Under the action of the forward incident wave, the entire device will experience three motion modes: vertical swing, vertical swing and pitching. Each mode has its own unique resonance period. This design significantly broadens the effective response cycle range of the device, ensuring that it can still maintain a high energy conversion efficiency in a complex and changeable marine environment.

[0034] The first vertical pipe 131 and the second vertical pipe 231 are both rectangular pipes, and the pipe widths, that is, the distances between the left and right walls are equal, and the cross-sectional areas of the second vertical pipe 231 and the horizontal pipe 232 are equal.

[0035] As attached Figure 3 As shown, in a further embodiment, the buoyancy tank module 3 includes a main buoyancy tank module 31 and a secondary buoyancy module 32. The main buoyancy tank module 3 is arranged above the top wall of the transverse pipe 232 of the L-shaped pipe 23 and forms a whole with the L-shaped pipe 23 to provide buoyancy for the entire device. The secondary buoyancy module 32 is arranged in the middle of the bottom ends of the front air chamber oscillation water column module 1 and the rear air chamber oscillation water column module 2 to adjust the balance of the device and provide a certain buoyancy.

[0036] The main buoyancy chamber module 31 is a pentagonal prism, and the end away from the front air chamber oscillation water column module 1 is a triangular tip. The interior of the main buoyancy chamber module 31 is a hollow structure and is divided into multiple compartments, and hatches are provided above the compartments. In this way, the counterweight of the device can be increased or decreased as needed through the multiple compartments to adjust to a suitable liquid level.

[0037] Among them, the auxiliary buoyancy module 32 is a triangular prism type, and a side edge of the triangular prism type auxiliary buoyancy module 32 is arranged between the front air chamber oscillation water column module 1 and the rear air chamber oscillation water column module 2. The interior of the auxiliary buoyancy module 32 is a hollow structure and is fully enclosed, and the outer surface is smoothly connected to the bottom of the front air chamber oscillation water column module 1 and the rear air chamber oscillation water column module 2 to form a whole.

[0038] In another specific embodiment, the turbine generator module 4 includes a first turbine generator 41 and a second turbine generator 42. The first turbine generator 41 is arranged at the top of the front air chamber oscillation water column module 1 and is connected to the front air chamber 11 of the first pipeline through a pipeline. The second turbine generator 42 is arranged at the top of the rear air chamber oscillation water column module 2 and is connected to the rear air chamber 21 of the second pipeline through a pipeline. In this way, by configuring two sets of turbine power generation devices respectively, the stability and efficiency of power generation are improved, the power generation characteristics of the device are improved, and the power output of the front air chamber 11 and the rear air chamber 21 can be better collected.

[0039] The docking of the two air chambers and the two turbine power generation devices of the present invention not only significantly reduces the failure rate, but also optimizes the power generation characteristics of the device. Since there is a phase difference in the oscillation movement of the water column under the two air chambers, when one air chamber is in the intake stage, the other air chamber is just in the exhaust stage. This complementary working mode effectively compensates for the problem of large output power fluctuation of the one-way turbine and greatly improves the stability of the output power.

[0040] The first turbine generator set 41 and the second turbine generator set 42 both include an air turbine and a generator. The air turbine is used to convert airflow energy into mechanical energy, and the generator is responsible for converting mechanical energy into electrical energy, thereby realizing energy conversion and utilization.

[0041] As attached Figure 4 As shown, in another specific embodiment, a mooring system 5 is further included, the mooring system 5 includes an anchor 51, an anchor chain 52 and an anchor windlass 53, the anchor windlass 53 is installed on the buoyancy chamber module 3, the anchor windlass 53 is connected with an extendable or retractable anchor chain 52, and the end of the anchor chain 52 away from the anchor windlass 53 is connected with an anchor 51. In this way, the floating range of the device can be easily controlled by the mooring system 5.

[0042] Among them, there are three groups of anchoring systems 5, and the three groups of anchoring systems 5 are respectively arranged on the left and right sides of the buoyancy tank module 3 and the side away from the first pipe water inlet. In this embodiment, the three groups of anchoring systems 5 can be respectively arranged in the cabin of the above-mentioned main buoyancy tank 41, and are respectively arranged at the left and right ends and the tail tip of the main buoyancy tank 41.

[0043] Part of the device of the present invention is a device for capturing wave energy and outputting unidirectional airflow energy, and the other part is a device for converting airflow energy into rotational mechanical energy, storing it and stably converting it into electrical energy. The present invention adopts a double air chamber structure. When low-period waves act on the device and the motion response of the floating body is weak, the wave energy can be absorbed by the active oscillating motion of the first oscillating water column 12 in the front air chamber 11; when the wave period becomes larger and the motion response of the floating body of the device is enhanced, the vertical swing, longitudinal swing and pitching motion of the floating body can force the water column in the second pipe to produce relative motion, and the wave energy can be captured and absorbed by the relative motion of the second oscillating water column 22 in the rear air chamber 21.

[0044] The present invention utilizes the multi-degree-of-freedom forced vibration of the water column and the buoy to capture wave energy, and by increasing the number of effective resonance periods and optimizing the air chamber configuration, it can achieve efficient capture of wave energy under different wave periods, which can broaden the effective wave absorption response period range and improve its conversion efficiency under irregular waves in actual sea conditions. The present invention has the advantages of simple and reliable structure, efficient and stable power generation, etc., and can promote the development of pneumatic wave energy utilization technology. The double air chamber design has a significant gain effect in terms of wave energy conversion efficiency and the effective bandwidth of wave energy capture, which not only improves the overall efficiency of energy conversion, but also broadens the frequency range of stable operation of the device under complex wave conditions. The airflow continuously output by the double air chamber enables the air turbine to operate efficiently within the rated operating conditions, thereby further improving the energy acquisition efficiency. It should be noted that the terms such as "upper", "lower", "left", "right", "front", "back", etc. cited in the invention are only for the convenience of description and are not used to limit the scope of implementation of the present invention. Changes or adjustments in their relative relationships should be regarded as the scope of implementation of the present invention without substantially changing the technical content.

[0045] The above are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should be regarded as the protection scope of the present invention.

Claims

1. A double-chamber floating oscillating water column wave energy power generation device, characterized in that: The invention comprises a front air chamber oscillating water column module (1), a rear air chamber oscillating water column module (2), a buoyancy chamber module (3) and a turbine generator module (4), wherein the front air chamber oscillating water column module (1) and the rear air chamber oscillating water column module (2) are adjacently connected, a first pipe is provided inside the front air chamber oscillating water column module (1), a second pipe is provided inside the rear air chamber oscillating water column module (2), and a first pipe water inlet and a second pipe water inlet are respectively provided on the front air chamber oscillating water column module (1) and the rear air chamber oscillating water column module (2), which are arranged opposite to each other and are located below the water surface. The tops of the front air chamber oscillating water column module (1) and the rear air chamber oscillating water column module (2) located above the water surface are respectively provided with turbine generator modules (4) connected to the first pipe and the second pipe, and the buoyancy chamber module (3) is connected to the front air chamber oscillating water column module (1) or the rear air chamber oscillating water column module (2) and is used to maintain an oscillating water column in the first pipe and the second pipe, respectively, with the liquid level being lower than the top of the inner cavity of the first pipe and the second pipe.

2. A double-air-chamber floating oscillating water column wave energy power generation device according to claim 1, characterized in that: The front air chamber oscillating water column module (1) and the rear air chamber oscillating water column module (2) are connected to a common wall surface adjacent to the first pipe and the second pipe.

3. The double-air-chamber floating oscillating water column wave energy power generation device according to claim 1, characterized in that: The first pipeline is a first vertical pipeline (131), the lower end of the first vertical pipeline (131) is provided with a first pipeline water inlet located below the water surface, the upper end of the first vertical pipeline (131) is connected to the turbine generator module (4), the second pipeline is an L-shaped pipeline (23), the L-shaped pipeline (23) is composed of a second vertical pipeline (231) and a transverse pipeline (232), the end of the transverse pipeline (232) away from the first pipeline water inlet is located below the water surface and is provided with a second pipeline water inlet, the second vertical pipeline (231) is connected to the transverse pipeline (232) and the upper end is connected to the turbine generator module (4).

4. The double-air-chamber floating oscillating water column wave power generation device according to claim 3 is characterized by: The first vertical pipe (131) and the second vertical pipe (231) are both rectangular pipes with equal pipe widths, and the second vertical pipe (231) and the transverse pipe (232) have equal cross-sectional areas.

5. The double-air-chamber floating oscillating water column wave energy power generation device according to claim 3, characterized in that: The buoyancy chamber module (3) comprises a main buoyancy chamber module (31) and a secondary buoyancy module (32); the main buoyancy chamber module (3) is arranged above the top wall of the transverse pipe (232) of the L-shaped pipe (23) and forms a whole with the L-shaped pipe (23); the secondary buoyancy module (32) is arranged in the middle of the bottom ends of the front air chamber oscillation water column module (1) and the rear air chamber oscillation water column module (2).

6. The double-air-chamber floating oscillating water column wave energy power generation device according to claim 5, characterized in that: The main buoyancy chamber module (31) is in the shape of a pentagonal prism, and one end away from the front air chamber oscillation water column module (1) is a triangular tip. The interior of the main buoyancy chamber module (31) is a hollow structure and is divided into a plurality of chambers, each of which has a hatch cover disposed above it.

7. The double-air-chamber floating oscillating water column wave energy power generation device according to claim 5, characterized in that: The auxiliary buoyancy module (32) is of a triangular prism type, a side edge of the triangular prism type auxiliary buoyancy module (32) is arranged between the front air chamber oscillation water column module (1) and the rear air chamber oscillation water column module (2), and the interior of the auxiliary buoyancy module (32) is a hollow structure and is fully enclosed.

8. The double-air-chamber floating oscillating water column wave energy power generation device according to claim 1, characterized in that: The turbine generator module (4) comprises a first turbine generator set (41) and a second turbine generator set (42), wherein the first turbine generator set (41) is arranged at the top of the front air chamber oscillation water column module (1) and is connected to the first pipeline through a pipeline, and the second turbine generator set (42) is arranged at the top of the rear air chamber oscillation water column module (2) and is connected to the second pipeline through a pipeline.

9. The double-air-chamber floating oscillating water column wave energy power generation device according to claim 1, characterized in that: The invention also comprises an anchoring system (5), the anchoring system (5) comprising an anchor (51), an anchor chain (52) and an anchor windlass (53), the anchor windlass (53) being installed on the buoyancy chamber module (3), the anchor windlass (53) being connected to an extendable or retractable anchor chain (52), and the end of the anchor chain (52) away from the anchor windlass (53) being connected to the anchor (51).

10. The double-air-chamber floating oscillating water column wave energy power generation device according to claim 9, characterized in that: The mooring system (5) is provided with three groups, and the three groups of mooring systems (5) are respectively arranged on the left and right sides of the buoyancy chamber module (3) and on the side away from the water inlet of the first pipeline.

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