Wave energy power generation device for semi-submersible wind power platform and wind power platform

Abstract

The invention discloses a wave energy power generation device for a semi-submersible type wind power platform and the wind power platform, and the wave energy power generation device comprises floaters which are arranged between platform stand columns and are connected with the platform stand columns at the same time; the hydraulic power generation system comprises a hydraulic cylinder, the hydraulic cylinder receives mechanical energy generated in the movement process of the floater and converts the mechanical energy into hydraulic energy, and the hydraulic power generation system can convert the hydraulic energy into electric energy to achieve power generation. According to the semi-submersible wind power platform, the floaters are arranged between the platform stand columns and serve as stable structures, the impact shaking effect of sea waves on the semi-submersible wind power platform is counteracted to a certain extent through heaving motion of the floaters, and the deflection amplitude of the semi-submersible wind power platform is reduced so as to improve the power generation efficiency of a fan; the floater and the platform stand columns are simultaneously provided with a connecting foundation, multiple sets of hydraulic cylinder structures can be arranged through the single floater, the hydraulic cylinders can conduct hydraulic energy conversion when the floater operates in any direction, and the stable power generation effect of the wave energy power generation device is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of wind power equipment, and in particular to a wave energy power generation device and a wind power platform for a semi-submersible wind power platform. Background Art

[0002] Floating wind turbine platforms are offshore wind turbines anchored to the seabed and supported by buoyancy. Currently, while these platforms utilize ocean wind energy, they also incorporate wave power generation devices to synchronize wave energy and generate electricity, further maximizing ocean energy resources. However, most current wave power generation devices are independently installed outside the floating wind turbine platform, relying solely on the floating wind turbine platform for their placement on the sea surface without any interaction. Furthermore, the wave power generation device's hydraulic cylinders, positioned in correspondence with the float, are easily affected by the operating status of a single float, leading to power generation stability issues.

[0003] Therefore, how to improve the overall power generation efficiency of semi-submersible wind power platforms is an urgent problem that technical personnel in this field need to solve. Summary of the Invention

[0004] In view of this, the purpose of this application is to provide a wave energy power generation device and a wind power platform for a semi-submersible wind power platform, so as to improve the overall power generation efficiency of the semi-submersible wind power platform.

[0005] To achieve the above objectives, this application provides the following technical solutions:

[0006] A wave energy power generation device for a semi-submersible wind power platform, comprising:

[0007] A float is disposed between a plurality of platform columns constituting the floating foundation of the platform, and a single float is connected to a plurality of the platform columns at the same time;

[0008] The hydraulic power generation system includes a hydraulic cylinder arranged between the float and the platform column. The hydraulic cylinder is used to receive the mechanical energy of the float during movement and convert it into hydraulic energy. The hydraulic power generation system can convert the hydraulic energy into electrical energy to generate electricity.

[0009] Preferably, in the above-mentioned wave energy power generation device for a semi-submersible wind power platform, there are two connection points between the float and a single platform column, and the two connection points are spaced apart in the axial direction of the column.

[0010] Preferably, in the above-mentioned wave energy power generation device for a semi-submersible wind power platform, the hydraulic power generation system includes a hydraulic rod, one end of which is hinged to the platform column and the other end extends into the cylinder barrel of the hydraulic cylinder; the end of the hydraulic cylinder away from the hydraulic rod is hinged to the float.

[0011] Preferably, in the above-mentioned wave energy power generation device for a semi-submersible wind power platform, the hydraulic cylinder is a single-rod double-acting hydraulic cylinder.

[0012] Preferably, in the above-mentioned wave energy power generation device for a semi-submersible wind power platform, the hydraulic power generation system includes a rectifier circuit and a hydraulic motor, and the hydraulic cylinder is connected to the hydraulic motor through the rectifier circuit;

[0013] The hydraulic cylinder includes a rod chamber and a rodless chamber, and the rod chamber and the rodless chamber are both connected to the rectification circuit; the rectification circuit includes four one-way valves. When the rod chamber and the rodless chamber produce any volume changes, the hydraulic oil inside the hydraulic cylinder flows out of the rectification circuit in one direction through the rectification effect of the rectification circuit and flows to the hydraulic motor.

[0014] Preferably, in the above-mentioned wave energy power generation device for a semi-submersible wind power platform, at least two of the hydraulic cylinders are connected to a single rectifier circuit and the hydraulic motor in the hydraulic power generation system.

[0015] Preferably, in the above-mentioned wave energy power generation device for a semi-submersible wind power platform, the hydraulic power generation system further comprises an accumulator, a flow meter and a relief valve arranged on the hydraulic oil circuit, and the flow meter is arranged close to the hydraulic motor.

[0016] Preferably, in the above-mentioned wave energy power generation device for a semi-submersible wind power platform, the accumulator includes at least a first accumulator connected to the rectifier circuit, and a second accumulator connected between the outlet of the rectifier circuit and the hydraulic motor.

[0017] Preferably, in the above-mentioned wave energy power generation device for a semi-submersible wind power platform, the hydraulic motor is connected to the generator via a coupling, and a tachometer and a torque meter are provided between the hydraulic motor and the generator.

[0018] A wind power platform comprises a wind turbine generator set, a semi-submersible floating platform and a wave energy power generation device for the semi-submersible wind power platform as described in any one of the above items.

[0019] Preferably, in the above-mentioned wind power platform, the semi-submersible floating platform includes three platform columns, and the wave energy power generation device for the semi-submersible wind power platform is arranged at the center position of the three platform columns.

[0020] Preferably, in the above-mentioned wind power platform, a heave plate is provided at the bottom of the platform column, and a ballast compartment for arranging ballast water is provided inside the platform column and the heave plate; and adjacent platform columns are fixedly connected by a plurality of transverse braces and a plurality of diagonal braces.

[0021] As can be seen from the above technical solutions, one aspect of the present disclosure provides a wave energy power generation device for a semi-submersible wind turbine platform. The wave energy power generation device mainly includes a float and a hydraulic power generation system. The float is arranged between several platform columns constituting the floating foundation of the platform, and a single float is simultaneously connected to several surrounding platform columns. It can obtain a stable support foundation while meeting the heave floating requirements, and it has a closer connection foundation with the semi-submersible wind turbine platform. It can serve as a stable structure and offset the impact and shaking of waves on the semi-submersible wind turbine platform to a certain extent through its heave movement, thereby improving the stability of the semi-submersible wind turbine platform and improving the power generation efficiency of the wind turbine. The hydraulic power generation system includes a hydraulic cylinder. When the relative position of the float and the surrounding platform columns changes, the hydraulic cylinder receives the mechanical energy of the float movement and converts it into internal hydraulic energy. The hydraulic power generation system converts the hydraulic energy into electrical energy to achieve power generation. Since a single float is simultaneously connected to several platform columns, the movement of the float in any direction can cause a relative position change with at least one platform column, so that the corresponding hydraulic cylinder receives mechanical energy and achieves power generation. In addition, the wave energy power generation device has a closer connection with the semi-submersible wind power platform, and can share the power transmission and distribution system and detection and maintenance resources with the semi-submersible wind power platform, thereby reducing the overall production cost of the semi-submersible wind power platform.

[0022] Another aspect of the present disclosure provides a wind power platform including the above-mentioned wave energy power generation device, which also has the technical effects of the above-mentioned wave energy power generation device and will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0024] Figure 1 A schematic diagram of the structure of assembling a float on a platform column according to an embodiment of the present disclosure;

[0025] Figure 2 It is a schematic diagram of the connection structure between the float, the hydraulic cylinder and the hydraulic rod;

[0026] Figure 3 is a schematic diagram of a hydraulic power generation system;

[0027] Figure 4 A schematic diagram of the wind power platform structure provided in one embodiment of the present disclosure;

[0028] Figure 5This is a schematic diagram of the structure of a semi-submersible floating platform in a wind power platform.

[0029] in:

[0030] 10- float; 110- connection point;

[0031] 20-Hydraulic power generation system; 210-Hydraulic cylinder; 2110-Rod chamber; 2120-Rodless chamber; 220-Hydraulic rod; 230-Rectifier circuit; 2310-First check valve; 2320-Second check valve; 2330-Third check valve; 2340-Fourth check valve; 240-Hydraulic motor; 2410-Tachometer; 2420-Torque meter; 2510-First accumulator; 2520-Second accumulator; 260-Flow meter; 270-Relief valve; 280-Generator; 2910-Flow diverter / collector valve; 2920-Throttle valve; 2930-Filter; 2940-Oil tank; 2950-Displacement sensor;

[0032] 30-wind turbine; 40-semi-submersible floating platform; 410-platform column; 420-heave plate; 430-cross brace; 440-diagonal brace. DETAILED DESCRIPTION

[0033] The core of this application is to disclose a wave energy power generation device and a wind power platform for a semi-submersible wind power platform.

[0034] In order to help those skilled in the art better understand the present invention, the following embodiments of the present invention are described with reference to the accompanying drawings. Furthermore, the embodiments shown below do not limit the invention as described in the claims. Furthermore, the entire contents of the configurations shown in the following embodiments are not limited to those necessary for the invention as described in the claims.

[0035] like Figure 1 and Figure 2 As shown, the embodiment of the present disclosure provides a wave energy power generation device for a semi-submersible wind turbine platform, which mainly includes a float 10 and a hydraulic power generation system 20. The float 10 is a component for receiving wave energy and is arranged between a plurality of platform columns 410 that constitute the platform's floating foundation. It should be noted that the embodiment of the present disclosure is preferably applied to a multi-column floating structure, such as a three-column semi-submersible wind turbine platform structure, in which the float 10 is arranged between multiple platform columns 410 and simultaneously connected to multiple platform columns 410. The multi-point connection method not only provides stable support for the float 10, but also enables the float 10 to serve as a stable structure. Through its offset heaving motion with the semi-submersible wind turbine platform, the float 10 can offset the impact and shaking of the semi-submersible wind turbine platform to a certain extent, thereby improving the stability of the semi-submersible wind turbine platform and the power generation efficiency of the wind turbine.

[0036] And as Figure 3 As shown, the hydraulic power generation system 20 includes a hydraulic cylinder 210, which is arranged between the float 10 and the platform column 410. It should be noted that the float 10 is connected to each platform column 410, and the hydraulic cylinder 210 is arranged on the connection structure between the float 10 and each platform column 410. For the three-column structure, when the float 10 moves in any direction, it can drive the piston in part of the hydraulic cylinder 210 to move through its floating action, thereby changing the pressure and flow of the hydraulic oil in the hydraulic cylinder 210, and realizing the conversion of the mechanical energy of the float 10 into hydraulic energy by the hydraulic cylinder 210. Unlike the coordinated structure of the float 10 and the single column, there may be a problem that the hydraulic cylinder 210 cannot obtain the mechanical energy of the float 10 due to the synchronization of the movement states of the float 10 and the single column. The float 10 connected to multiple platform columns 410 drives multiple hydraulic cylinders 210, so that the hydraulic power generation system 20 can generate continuous hydraulic energy during the movement of the float 10 and achieve a stable and continuous power generation effect.

[0037] Therefore, the wave energy power generation device provided by the embodiment of the present disclosure, through the float 10 between several platform columns 410, can, on the one hand, enable the wave energy power generation device to serve as a stable structure of the semi-submersible wind turbine platform. By staggering the platform columns 410 of the semi-submersible wind turbine platform, the tilt and sway amplitude of the platform columns 410 under the influence of waves is reduced, thereby improving the stability of the semi-submersible wind turbine platform, providing a more stable power generation foundation for the wind turbine and optimizing its power generation efficiency. On the other hand, the float 10 connected to the several platform columns 410 is provided with a hydraulic cylinder 210 between each platform column 410, so that the relative movement of the float 10 in any direction can cause the corresponding hydraulic cylinder 210 to receive mechanical energy and generate electricity, ensuring the normal operation of the hydraulic power generation system 20. In addition, the connection between the wave energy power generation device and the platform columns 410 is closer and more stable, and it can share detection and maintenance resources with the wind turbine platform, such as power sensors and remote control systems, thereby reducing equipment production and use costs.

[0038] Furthermore, in some embodiments of the present disclosure, two connection points 110 are provided between the float 10 and a single platform column 410, and the two connection points 110 are spaced apart in the axial direction of the column. It should be noted that, compared to a structure with a single connection point 110, the connection points 110 distributed at different heights on the platform column 410 can collectively support the float 10 when impacted by waves, thereby preventing the float 10 from excessive tilting or shaking due to uneven force, allowing the float 10 to swing more smoothly. At the same time, the spaced connection points 110 structure can also improve the efficiency of energy conversion. During the vertical swing of the float 10, the connection points 110 at different heights allow their respective hydraulic cylinders 210 to effectively receive the mechanical energy of the float 10 at different stages. For example, when the float 10 floats upward, the hydraulic cylinder 210 corresponding to the higher connection point 110 is compressed, driving the internal hydraulic oil to move, and realizing the conversion of the mechanical energy of the float 10 into hydraulic energy; while when the float 10 floats downward, the hydraulic cylinder 210 corresponding to the lower connection point 110 is compressed, driving the internal hydraulic oil to move, so that the hydraulic cylinder 210 can maintain a good working state throughout the entire movement process, thereby increasing the amount of hydraulic energy generated and improving the power generation efficiency of the wave energy power generation device.

[0039] Furthermore, in order to improve the efficiency of the hydraulic power generation system 20 in receiving the mechanical energy of the float 10, in some embodiments of the present disclosure, the hydraulic power generation system 20 includes a hydraulic rod 220, wherein one end of the hydraulic rod 220 is hinged to the platform column 410, and the other end directly extends into the cylinder barrel of the hydraulic cylinder 210. While the hydraulic cylinder 210 is connected to the hydraulic rod 220, its end away from the hydraulic rod 220 extends and is hinged to the float 10; when the float 10 floats up and down due to the action of waves, the hydraulic rod 220 will accordingly perform telescopic movement, thereby pushing the piston in the hydraulic cylinder 210 to move, and the direct drive method can make the transmission of mechanical energy more efficient. At the same time, since both ends of the hydraulic rod 220 and the hydraulic cylinder 210 are connected in an articulated manner, they can adapt to the changes in the relative motion angle between the float 10 and the platform column 410 to a certain extent. During actual operation, the motion trajectory of the float 10 will undergo complex changes due to changes in the direction and intensity of the waves. The articulated connection method enables the hydraulic rod 220 and the hydraulic cylinder 210 to adjust the angle within a certain range, and provide support for the float 10 from the circumference of the float 10, so that the movement of the float 10 can be closer to the heaving motion and achieve a stable mechanical energy transmission effect.

[0040] In addition, the hinged structure at both ends of the hydraulic rod 220 and the hydraulic cylinder 210 also allows greater freedom in the installation of the wave energy power generation device. The hydraulic rod 220 and the hydraulic cylinder 210 can be pre-installed and debugged as a relatively independent module, which is convenient for layout and adjustment on the platform. They can also be quickly disassembled for repair or replacement without large-scale disassembly of the entire device, thereby improving maintenance efficiency.

[0041] On the basis of the above embodiment, the hydraulic cylinder 210 is a single-rod double-acting hydraulic cylinder 210, that is, after the hydraulic rod 220 is extended into the hydraulic cylinder 210, the cylinder barrel of the hydraulic cylinder 210 is divided into two parts: a rod chamber 2110 and a rodless chamber 2120. During operation, the hydraulic oil can enter the rod chamber 2110 and the rodless chamber 2120 respectively, pushing the piston to perform reciprocating motion, ensuring that the flow pressure in the hydraulic power generation system 20 tends to be stable during the vertical swing motion of the float 10. Regardless of how the direction of the wave action changes, the hydraulic cylinder 210 can work effectively, thereby improving the efficiency of energy conversion.

[0042] Furthermore, in some embodiments of the present disclosure, the hydraulic power generation system 20 includes a rectifier circuit 230 and a hydraulic motor 240. Specifically, the hydraulic cylinder 210 is connected to the hydraulic motor 240 through the rectifier circuit 230 to transmit the converted hydraulic energy to the position of the hydraulic motor 240, thereby driving the hydraulic motor 240 to rotate and achieve subsequent power generation. It should be noted that the hydraulic cylinder 210 specifically includes a rod chamber 2110 and a rodless chamber 2120, and the rod chamber 2110 and the rodless chamber 2120 are both connected to the rectifier circuit 230. The rectifier circuit 230 includes four one-way valves to plan the flow path of the hydraulic oil through the four one-way valves. When the rod chamber 2110 and the rodless chamber 2120 produce any volume change, the hydraulic oil inside the hydraulic cylinder 210 will pass through the rectifier circuit 230 and, with the help of the rectification effect of the rectifier circuit 230, flow out of the rectifier circuit 230 in one direction and flow to the hydraulic motor 240.

[0043] The function of the rectifier circuit 230 is to ensure that when the float 10 floats up and down under the action of waves, the hydraulic oil flowing out of the rod chamber 2110 or the rodless chamber 2120 can flow unidirectionally to the hydraulic motor 240, and the hydraulic motor 240 can continuously obtain stable hydraulic energy input. Figure 4As shown, for a single hydraulic cylinder 210, when its corresponding hydraulic rod 220 compresses the rodless chamber 2120, the hydraulic oil in the rodless chamber 2120 is discharged and reaches point a through the limiting effect of the first one-way valve 2310 and the second one-way valve 2320, and is discharged from point a to the position of the hydraulic motor 240 downstream. At the same time, the hydraulic oil in the oil tank 2940 reaches the rod chamber 2110 from point b through the passage effect of the third one-way valve 2330 and the fourth one-way valve 2340 to maintain the liquid. The pressure inside cylinder 210 is stable. Accordingly, as hydraulic rod 220 drives rodless chamber 2120 to expand, hydraulic oil in rod chamber 2110 is discharged. This oil is also collected at point a through the limiting action of first and second check valves 2310 and 2320, and then discharged from point a to the downstream hydraulic motor 240. Meanwhile, hydraulic oil in oil tank 2940 reaches rodless chamber 2120 from point b, passing through the passages of third and fourth check valves 2330 and 2340. The hydraulic oil received by hydraulic motor 240 acts in a one-way manner, ensuring stable operation.

[0044] It should also be noted that in order to further improve the operating stability of the hydraulic motor 240, in some embodiments of the present disclosure, the hydraulic power generation system 20 is connected to a single rectifier circuit 230 and a single hydraulic motor 240 through at least two hydraulic cylinders 210, so that at least two hydraulic cylinders 210 can jointly provide hydraulic energy for the hydraulic motor 240. Since the hydraulic motor 240 receives energy from two or more hydraulic cylinders 210 at the same time, it can obtain a more stable hydraulic energy input. When the function of a single hydraulic cylinder 210 is insufficient, the remaining hydraulic cylinders 210 can compensate for the supply and achieve more efficient mechanical energy conversion. At the same time, the hydraulic power generation system 20 of at least two hydraulic cylinders 210 also has a certain redundancy. Even if one hydraulic cylinder 210 fails, the other hydraulic cylinders 210 can still continue to work, thereby ensuring the normal operation of the entire power generation system.

[0045] Furthermore, the hydraulic power generation system 20 provided in the embodiment of the present disclosure also includes an accumulator, a flow meter 260 and a relief valve 270, all of which are arranged on the hydraulic oil circuit of the hydraulic power generation system 20, wherein the flow meter 260 is arranged close to the hydraulic motor 240 to monitor the flow of hydraulic oil; through the flow meter 260, the flow of hydraulic oil near the hydraulic motor 240 can be understood in real time, the working efficiency of the hydraulic cylinder 210 and the load condition of the hydraulic motor 240 can be judged, thereby monitoring and adjusting the operating status of the hydraulic power generation system 20.

[0046] The accumulator is used to store and release hydraulic energy. When sea wave energy is unstable, such as when the waves are large, the hydraulic cylinder 210 generates a large amount of hydraulic energy, and the excess hydraulic energy can be stored in the accumulator. When the waves are small, the accumulator can release the stored hydraulic energy to supplement the energy needs of the hydraulic motor 240, ensuring the continuity of the power generation process. The relief valve 270 is used to limit the pressure in the hydraulic power generation system 20. When the pressure in the hydraulic power generation system 20 exceeds the set value, the relief valve 270 automatically opens to discharge the excess hydraulic oil, thereby protecting the various components of the hydraulic power generation system 20 from damage caused by excessive pressure.

[0047] In addition, a displacement sensor 2950 may be provided in the hydraulic power generation system 20 to detect the movement amplitude of the hydraulic cylinder 210 or the float 10, thereby detecting the operation of the hydraulic power generation system 20 and providing certain data support for subsequent regulation and maintenance.

[0048] It should be further explained that the hydraulic power generation system 20 can also be provided with equipment such as a diverter and collector valve 2910, a throttle valve 2920 and a filter 2930. The diverter and collector valve 2910 is arranged between the hydraulic cylinder 210 and the rectifier circuit 230 to control the flow distribution and collection of the hydraulic oil; the throttle valve 2920 is arranged in the hydraulic circuit and at the outlet position of the accumulator to achieve flow regulation by changing the flow area of ​​the hydraulic oil, thereby controlling the movement speed of the hydraulic cylinder 210 or the hydraulic motor 240; and the filter 2930 is used to filter the hydraulic oil when the oil tank 2940 supplies oil to the hydraulic cylinder 210 to reduce the entry of impurities into the hydraulic cylinder 210, which affects the service life of the hydraulic cylinder 210.

[0049] In addition, in some embodiments of the present disclosure, a first accumulator 2510 and a second accumulator 2520 are provided in the hydraulic power generation system 20, wherein the first accumulator 2510 is directly connected to the rectifier circuit 230 to maintain the pressure of the rectifier circuit 230 and improve the operating stability of the rectifier circuit 230; and the second accumulator 2520 is connected between the outlet of the rectifier circuit 230 and the hydraulic motor 240 to stabilize the pressure upstream of the hydraulic motor 240 and ensure that the hydraulic motor 240 can be in a continuous working state.

[0050] Furthermore, the hydraulic motor 240 receives hydraulic energy from the hydraulic power generation system 20 and generates electricity through the generator 280. It should be noted that the hydraulic motor 240 is connected to the generator 280 via a coupling, which provides a certain degree of buffering and compensation. This allows the generator 280 to operate more stably when the speed and torque of the hydraulic motor 240 fluctuate to a certain extent due to changes in waves. It should also be noted that a tachometer 2410 and a torque meter 2420 are provided between the hydraulic motor 240 and the generator 280 to monitor the operating status of the hydraulic motor 240 in real time. The tachometer 2410 is used to measure the speed of the hydraulic motor 240, and the torque meter 2420 is used to measure the torque output by the hydraulic motor 240 to evaluate the performance and power generation efficiency of the hydraulic motor 240. By monitoring the speed and torque, it is possible to promptly determine whether the hydraulic motor 240 is operating in an optimal operating state, and to make appropriate adjustments to the operating state or perform timely maintenance.

[0051] Furthermore, if Figure 4 and Figure 5 As shown, the embodiments of the present disclosure also disclose a wind power platform, which includes a wind turbine 30, a semi-submersible floating platform 40, and a wave energy power generation device of the semi-submersible wind power platform provided in any of the above embodiments; the semi-submersible floating platform 40 is floating on the sea surface, and the wind turbine 30 and the wave energy power generation device are both installed on the semi-submersible floating platform 40. It should be noted that since the wave energy power generation device has the technical effects provided in any of the above embodiments, the wind power platform also has the above technical effects, which will not be described in detail herein.

[0052] Furthermore, in the wind power platform provided in the embodiment of the present disclosure, the semi-submersible floating platform 40 includes three platform columns 410, and the wave energy power generation device for the semi-submersible wind power platform is arranged at the center position of the three platform columns 410 to improve the structural symmetry and stability of the wind power platform. It should be noted that the layout of the three platform columns 410 makes the entire platform have good stability. In the process of withstanding the impact of wind and waves, the structure of the three columns can effectively disperse the impact force, ensure the stable operation of the platform, and is suitable for deep-sea scenarios with more complex environments.

[0053] In addition, this layout also facilitates the installation and maintenance of the wave energy power generation device. That is, the device is located in the center of the platform, and the staff can operate and maintain it more conveniently. The symmetrical layout also makes the pipeline and line layout of the hydraulic power generation system 20 simpler, reducing the complexity of the system.

[0054] Based on the above embodiment, the bottom of the platform columns 410 is equipped with heave plates 420, and ballast compartments for arranging ballast water are located within the platform columns 410 and heave plates 420. It should be noted that the heave plates 420 extend into the seabed to enhance the platform's stability in waves. The ballast compartments are used to adjust the platform's buoyancy and stability. By distributing the ballast water within different ballast compartments, the buoyancy effect at different locations on the wind turbine platform can be varied. When the wind turbine platform yaws under the action of waves, the ballast water distribution can be adjusted to increase the buoyancy effect on the lower side of the yaw, thereby reducing the platform's swing amplitude and improving the operational stability of the wind turbine 30. Furthermore, two separated platform columns 410 are secured simultaneously by horizontal braces 430 and diagonal braces 440, dividing the area between the two platform columns 410 into multiple enclosed areas and enhancing the structural stability of the wind turbine platform.

[0055] In the specification and claims of this application, as well as in the accompanying drawings, the terms "first," "second," "left," and "right," etc., are used to distinguish between different objects, not to describe a specific order. Furthermore, the terms "including," "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or elements is not limited to the listed steps or elements and may include steps or elements that are not listed.

[0056] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present application. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A wave energy power generation device for a semi-submersible wind power platform, characterized in that: include: A float (10) is disposed between a plurality of platform columns (410) constituting a floating foundation of the platform, and a single float (10) is simultaneously connected to a plurality of the platform columns (410); The hydraulic power generation system (20) comprises a hydraulic cylinder (210) disposed between the float (10) and the platform column (410), wherein the hydraulic cylinder (210) is used to receive mechanical energy during the movement of the float (10) and convert it into hydraulic energy, and the hydraulic power generation system (20) is capable of converting the hydraulic energy into electrical energy to realize power generation.

2. The wave energy power generation device for a semi-submersible wind power platform according to claim 1, characterized in that: There are two connection points (110) between the float (10) and the single platform column (410), and the two connection points (110) are spaced apart in the axial direction of the column.

3. The wave energy power generation device for a semi-submersible wind power platform according to claim 1, characterized in that: The hydraulic power generation system (20) comprises a hydraulic rod (220), one end of the hydraulic rod (220) is hinged to the platform column (410), and the other end extends into the cylinder barrel of the hydraulic cylinder (210); the end of the hydraulic cylinder (210) away from the hydraulic rod (220) is hinged to the float (10).

4. The wave energy power generation device for a semi-submersible wind power platform according to claim 3, characterized in that: The hydraulic cylinder (210) is a single-rod double-acting hydraulic cylinder (210).

5. The wave energy power generation device for a semi-submersible wind power platform according to claim 4, characterized in that: The hydraulic power generation system (20) includes a rectification circuit (230) and a hydraulic motor (240), and the hydraulic cylinder (210) is connected to the hydraulic motor (240) via the rectification circuit (230); The hydraulic cylinder (210) includes a rod chamber (2110) and a rodless chamber (2120), and the rod chamber (2110) and the rodless chamber (2120) are both connected to the rectification circuit (230); the rectification circuit (230) includes four one-way valves, and when the rod chamber (2110) and the rodless chamber (2120) produce any volume change, the hydraulic oil inside the hydraulic cylinder (210) flows out of the rectification circuit (230) in one direction through the rectification effect of the rectification circuit (230) and flows to the hydraulic motor (240).

6. The wave energy power generation device for a semi-submersible wind power platform according to claim 5, characterized in that: At least two of the hydraulic cylinders (210) are connected to a single rectifying circuit (230) and the hydraulic motor (240) in the hydraulic power generation system (20).

7. The wave energy power generation device for a semi-submersible wind power platform according to claim 5, characterized in that: The hydraulic power generation system (20) further includes an accumulator, a flow meter (260), and a relief valve (270) arranged on the hydraulic oil circuit, wherein the flow meter (260) is arranged close to the hydraulic motor (240).

8. The wave energy power generation device for a semi-submersible wind power platform according to claim 7, characterized in that: The accumulator comprises at least a first accumulator (2510) connected to the rectification circuit (230), and a second accumulator (2520) connected between the outlet of the rectification circuit (230) and the hydraulic motor (240).

9. The wave energy power generation device for a semi-submersible wind power platform according to claim 5, characterized in that: The hydraulic motor (240) is connected to the generator (280) via a coupling transmission, and a tachometer (2410) and a torque meter (2420) are provided between the hydraulic motor (240) and the generator (280).

10. A wind power platform, characterized in that: It comprises a wind turbine (30), a semi-submersible floating platform (40), and a wave energy power generation device for a semi-submersible wind power platform as claimed in any one of claims 1 to 9.

11. The wind power platform according to claim 10, characterized in that: The semi-submersible floating platform (40) comprises three platform columns (410), and the wave energy power generation device for the semi-submersible wind power platform is arranged at the center of the three platform columns (410).

12. The wind power platform according to claim 11, characterized in that: A heave plate (420) is provided at the bottom of the platform column (410), and a ballast compartment for arranging ballast water is provided inside the platform column (410) and the heave plate (420); and adjacent platform columns (410) are fixedly connected by a plurality of transverse braces (430) and a plurality of diagonal braces (440).

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