Multi-degree-of-freedom wave power generation device

Abstract

The utility model discloses a multi-degree-of-freedom wave power generation device, which belongs to the technical field of wave power generation devices and consists of an energy capturing device, a hydraulic rod component, a conversion integration device, a hydraulic power conversion module and a fixing device. The energy capturing device comprises a base and a floater, and the floater in the device captures energy from sea wave surging and transmits the energy to the hydraulic rod assembly; the hydraulic rod assembly comprises a cylinder sleeve, a push rod, a fixed hinge and a locking buckle, and the push rod receives energy to push and pull hydraulic oil in the cylinder sleeve to complete primary energy conversion; the conversion integration device comprises a converter, a hydraulic hose and an adapter, and high-pressure hydraulic oil is collected through the converter and flows into an oil inlet pipe. Liquid oil is pushed to flow into the converter in different directions, high-pressure liquid oil flows into the hydraulic motor through the converter to achieve secondary energy conversion, the liquid oil releasing energy flows back to the hydraulic push rod again through the oil outlet pipe, and therefore the technical level and economical efficiency of energy utilization are improved through circulation.

Description

Technical Field

[0001] The utility model relates to the technical field of wave energy power generation devices, in particular to a multi-degree-of-freedom sea wave power generation device. Background Art

[0002] With the increasing demand for electricity and the popularization of energy-saving and environmental protection concepts, more and more high-tech technologies are being widely applied to various aspects, among which wave energy power generation technology has attracted much attention. Wave energy power generation technology is an important supplement to renewable energy sources such as solar energy and wind energy. The source of wave energy is sufficient and stable, and has the advantages of low maintenance cost and environmental protection. The theoretical value of wave energy in the ocean on Earth is about 109kW, which is hundreds of times the total power generation in the world at present, and has broad commercial prospects and strategic value. At present, most wave energy power generation devices exist in the form of single degree of freedom, with low system efficiency, low energy utilization efficiency, poor stability and low penetration rate. Therefore, there is an urgent need for a wave power generation device that can fully utilize wave energy, has high versatility and strong stability. To achieve this goal, the utility model adds six hydraulic push rods on the basis of the previous floating wave power generation to realize the multi-degree-of-freedom wave energy collection and conversion of heave, roll, pitch and their combination, and drives the push rod and the cylinder sleeve to do push-pull movements in different directions, compresses the liquid oil in the cylinder sleeve to form high-pressure hydraulic pressure, which is then integrated through the converter and flows into the hydraulic motor, undergoing a process of converting wave energy into oil pressure, converting oil pressure into mechanical energy and then converting into electrical energy through the generator, ultimately realizing energy conversion; the liquid oil that releases energy flows back to the hydraulic push rod through the oil outlet pipe, and this is a cycle, realizing high-efficiency energy conversion, maximizing the flexibility of the device to achieve stable power generation, and making good improvements to the above-mentioned status quo. Utility Model Content

[0003] In view of the shortcomings of previous technologies, the purpose of the utility model is to provide a multi-degree-of-freedom wave power generation device, including: a hydraulic motor, an oil inlet pipe, an oil outlet pipe, a cylinder sleeve, a push rod, a fixed hinge, a locking buckle, a fixing frame, a fixing bracket, a base, a float, a converter, a hydraulic hose, and an adapter.

[0004] Based on the traditional floating wave energy power generation technology, the product combines the previous single-degree-of-freedom device and adds six sets of hydraulic rods to sense wave surges in different directions. It collects the multi-degree-of-freedom wave energy of heave, pitch, roll and their combination, so that the device can achieve multi-degree-of-freedom movement with the seawater to push the liquid oil, enhance the energy conversion efficiency, and adapt to different wave environments to the greatest extent, expand the versatility of the device, and optimize the technical level and economy of energy utilization.

[0005] Furthermore, the utility model places the hydraulic rod assembly, which accounts for a relatively large proportion of the mass, below the sea surface, so that the center of gravity is located below the water surface and the overall device is symmetrically designed, thereby preventing the device from capsizing due to the lateral force generated by the irregular fluctuations of the waves and the restoring torque generated by the movement of the hydraulic rod group, ensuring the balance of the device's own force, and enhancing the robustness of the device's operation, so as to achieve the purpose of stable power generation.

[0006] Furthermore, the float of the utility model is multifaceted and can not only absorb wave energy from multiple directions to maximize the absorption and utilization of energy, but also disperse the impact force of waves and extend the service life of the product.

[0007] Furthermore, the utility model uses hydraulic oil with good energy storage advantages, can effectively absorb and conduct energy, has high viscosity, is easy to withstand high-speed, high-pressure impact, is not easy to produce cavitation and corrosion, has high comprehensive performance, ensures stable operation of the device, and enhances energy conversion efficiency.

[0008] Furthermore, the utility model adopts a low-speed high-torque hydraulic motor, which has strong low-speed stability, small size and high power, and can output electrical energy stably; this type of motor has a compact structure, small size, light weight, simple installation, and the product is highly popularizable and promotable.

[0009] Furthermore, hydraulic hoses are used to transport liquid oil. Hydraulic hoses have good tolerance, high bearing pressure and pulse performance, can adapt to complex and changing environments, and improve the feasibility of equipment operation.

[0010] Furthermore, a locking buckle is provided at the connection between the hydraulic hose and the hydraulic rod assembly to tighten the hydraulic hose and the hydraulic rod assembly, thereby preventing leakage of liquid oil from affecting the normal operation of the device and extending the service life of the device.

[0011] The beneficial effects of the utility model are:

[0012] Compared with the prior art, the utility model utilizes the surge of sea waves to drive the float to move, thereby driving the push rod and the cylinder sleeve to do push-pull movements, compressing the liquid oil in the cylinder sleeve to form high-pressure hydraulic oil, which is then integrated into the hydraulic motor through a converter, and undergoes wave energy conversion into oil pressure, and the oil pressure is converted into mechanical energy and then converted into electrical energy through a generator to achieve energy conversion; the liquid oil that releases energy flows back to the hydraulic push rod through the oil outlet pipe, and this is a cycle to achieve high-efficiency energy conversion. Based on the traditional floating wave energy power generation technology, the utility model combines the previous single-degree-of-freedom device and adds six hydraulic push rods to realize the multi-degree-of-freedom wave energy collection of heave, roll, pitch and their combination, so as to push the liquid oil in the cylinder sleeve in different directions, and maximize the flexibility of the device to achieve high-efficiency and stable power generation; the utility model breaks the previous power generation mode, adopts hydraulic power generation, combines hydraulic oil with good comprehensive performance with a low-speed and high-torque hydraulic motor, and transports it through a hydraulic hose, which improves the operating stability and versatility of the device while extending the service life of the device; the utility model places the hydraulic rod assembly with a relatively large mass below the sea surface, so that the center of gravity is located below the water surface and the overall device is symmetrically designed, which prevents the device from overturning due to the lateral force generated by the irregular fluctuations of the waves and the restoring torque generated when the hydraulic rod group moves, thereby ensuring the balance of the device's own force. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The overall structural diagram provided for the embodiment of the utility model;

[0014] Figure 2 A schematic diagram of the structure of a hydraulic rod assembly provided by an embodiment of the utility model;

[0015] Figure 3 A schematic diagram of the structure of a fixing device provided in an embodiment of the utility model;

[0016] Figure 4 A schematic diagram of the structure of an energy capture device provided in an embodiment of the utility model;

[0017] Figure 5 A schematic cross-sectional view of a converter provided in an embodiment of the utility model.

[0018] In the figure: 1-1 hydraulic motor, oil inlet pipe 1-2, oil outlet pipe 1-3, cylinder sleeve 2-1, push rod 2-2, fixed hinge 2-3, locking buckle 2-4, fixed frame 3-1, fixed bracket 3-2, base 4-1, float 4-2, converter 5-1, hydraulic hose 5-2, adapter 5-3. DETAILED DESCRIPTION

[0019] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0020] As shown in the implementation diagram: A multi-degree-of-freedom wave power generation device belongs to the technical field of wave energy power generation devices. The utility model includes five parts: a hydraulic power conversion module, a hydraulic rod assembly, a fixing device, an energy capture device, and a conversion integrated device. The hydraulic power conversion module includes a hydraulic motor 1-1, an oil inlet pipe 1-2, and an oil outlet pipe 1-3; the hydraulic rod assembly includes a cylinder sleeve 2-1, a push rod 2-2, a fixed hinge 2-3, and a locking buckle 2-4; the fixing device includes the fixing frame 3-1 and a fixed bracket 3-2; the energy capture device includes a base 4-1 and a float 4-2; the conversion integrated device includes a converter 5-1, a hydraulic hose 5-2, and an adapter 5-3. The hydraulic rod assembly is hingedly connected to the fixing device and the energy collection device respectively; the converter 5-1 is bolted to the fixing frame 3-1. Liquid oil flows through the cylinder sleeve 2-1 and the hydraulic hose 5-2, and the push rod 2-2 reciprocates relative to the cylinder sleeve 2-1; the liquid oil enters and exits the converter 5-1 through the hydraulic hose 5-2, and enters and exits the hydraulic motor 1-1 through the oil inlet pipe 1-2 and the oil outlet pipe 1-3; the float 4-2 moves with the surge of the waves, driving the base 4-1 and the hydraulic rod assembly cylinder sleeve 2-1 and push rod 2-2 to move.

[0021] The device fixes the fixed bracket to the offshore buoy and the coastal land by bolts. The device is semi-submerged in the seawater. The device collects wave energy through the float 4-2. The float is made of two 5000mm*5000mm nylon plates spliced ​​together and connected to the base 4-1 by riveting. The base 4-1 is hinged to the push rod 2-2. The hydraulic rod assembly adopts GB / T2348-1993 hydraulic cylinder 2-1 with an inner diameter of 80mm, and the push rod 2-2 with an outer diameter of 36mm. The hydraulic cylinder is connected to the adapter 2-3 by a pin shaft type, and then hinged to the fixed frame 3-1; the oil inlet pipe 1-2, The oil outlet pipe 1-3 and the hydraulic hose 5-2 are of 4SP type. The hydraulic hose has a nominal diameter of 38mm and a length of 1000mm. It connects the hydraulic cylinder sleeve 2-1 and the converter 5-1. The converter integrates various hydraulic oils. The oil inlet pipe 1-2 and the oil outlet pipe 1-3 have a nominal diameter of 51mm. They connect the converter 5-1 and the hydraulic motor 1-1. The hydraulic motor 1-1 adopts a double-swash plate axial piston motor. The motor is fixed to the stable platform and the land by bolts. Except for standard parts and purchased parts, the remaining customized parts are made of HT200 and are coated with a silicone resin anti-corrosion coating on the outside.

[0022] The utility model adopts a symmetrical design as a whole to prevent the device from capsizing due to the lateral force generated by the irregular fluctuation of the waves and the restoring torque generated by the movement of the hydraulic rod group. The float is made of nylon material, which has high impact toughness while ensuring corrosion resistance. The overall non-standard parts are made of HT200, which has high toughness and strength. The silicone resin corrosion-resistant coating can protect the device body from marine corrosion.

[0023] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of the present invention, and are not intended to limit the present invention in any form. Although the above embodiments and the specification only describe the principle of the present invention, various changes can be made to them in form or detail, but they cannot deviate from the scope defined by the claims of the present invention. The protection scope of the present invention shall be based on the content of the claims, and any equivalent transformation based on the technical inspiration of the present invention shall fall within the protection scope of the technical solution of the present invention.

Claims

1. A multi-degree-of-freedom wave power generation device, characterized in that: The invention comprises a hydraulic power conversion module, a hydraulic rod assembly, a fixing device, an energy capture device and a conversion integrated device; the hydraulic power conversion module comprises a hydraulic motor (1-1), an oil inlet pipe (1-2) and an oil outlet pipe (1-3); the hydraulic rod assembly comprises a cylinder sleeve (2-1), a push rod (2-2), a fixed hinge (2-3) and a locking buckle (2-4); the fixing device comprises a fixing frame (3-1) and a fixing bracket (3-2); the energy capture device comprises a base (4-1) and a float (4-2); the conversion integrated device comprises a converter (5-1), a hydraulic hose (5-2) and an adapter (5-3); the hydraulic rod assembly is hingedly connected to the fixing device and the energy collection device respectively; the converter is bolted to the fixing frame; the cylinder sleeve and the push rod are respectively connected to the fixing frame and the base through hinges.

2. A multi-degree-of-freedom ocean wave power generation device according to claim 1, characterized in that: The hydraulic rod assembly is placed below the sea surface, so that the center of gravity is below the water surface and the device as a whole is symmetrically designed.

3. A multi-degree-of-freedom ocean wave power generation device according to claim 1 or 2, characterized in that: The float (4-2) has multiple faces.

4. A multi-degree-of-freedom ocean wave power generation device according to claim 1 or 2, characterized in that: The hydraulic motor (1-1) is a low-speed high-torque hydraulic motor.

5. The multi-degree-of-freedom ocean wave power generation device according to claim 3, characterized in that: The hydraulic motor (1-1) is a low-speed high-torque hydraulic motor.

6. A multi-degree-of-freedom ocean wave power generation device according to claim 1, 2 or 5, characterized in that: The connection between the hydraulic hose (5-2) and the hydraulic rod assembly is provided with a locking buckle which has a locking function, so that the hydraulic hose and the hydraulic rod assembly are tightly combined.

7. The multi-degree-of-freedom ocean wave power generation device according to claim 3, characterized in that: The connection between the hydraulic hose (5-2) and the hydraulic rod assembly is provided with a locking buckle which has a locking function, so that the hydraulic hose and the hydraulic rod assembly are tightly combined.

8. The multi-degree-of-freedom ocean wave power generation device according to claim 4, characterized in that: The connection between the hydraulic hose (5-2) and the hydraulic rod assembly is provided with a locking buckle which has a locking function, so that the hydraulic hose and the hydraulic rod assembly are tightly combined.

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