A dual float wave energy generator

Abstract

The application discloses a double-floater wave energy power generation device, which comprises a connecting rod and two same floater power generation assemblies; the two floater power generation assemblies are arranged at the two ends of the connecting rod; the floater power generation assembly comprises a floater shell, a generator, a connecting rod, a supporting piece, a first transmission assembly, a second transmission assembly and a gear ring which are arranged in the floater shell; one end of the connecting rod is hingedly connected to one end of the connecting rod in a rotary pair mode, and the other end of the connecting rod is fixedly connected to the gear ring; the inner ring of the gear ring is provided with two staggered and reverse ratchet racks, and the two ratchet racks are arranged in alignment at one end; one end of the supporting piece is fixedly connected to the bottom surface of the floater shell, and the other end of the supporting piece is hingedly connected to the connecting rod in a rotary pair mode; the ratchet rack of the gear ring is meshed with the gear wheel at the input end of the first transmission assembly, and the output end of the first transmission assembly is transmissionally connected to the input end of the generator. The double-floater power generation assembly is subjected to the wave force to make relative heaving motion, the double-floater power generation assembly can generate power at the same time, and the power generation efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wave energy power generation, in particular to a double-floater wave energy power generation device. BACKGROUND

[0002] With the continuous development of human society and world economy, traditional energy is increasingly scarce, and the ecological environment is seriously polluted and destroyed. Large-scale use of fossil fuels has caused serious ecological and environmental problems. Under this circumstance, human beings gradually turn their attention to the vast field of ocean energy. Wave energy is widely distributed, has large energy flow density, is less limited by time, and has low development difficulty. It is called the highest grade ocean energy, and the research on its conversion device has become a hot issue in the world.

[0003] In recent years, wave energy power generation devices have evolved and there are many types. Among them, the oscillating floater wave energy power generation device has high power generation efficiency, flexible equipment arrangement, and small impact on the device. It has become one of the hotspots of wave energy power generation device research. Since a single floater cannot completely absorb the wave energy on the wave surface within the floater width, wave energy is lost and wasted. To solve the above problems, a wave energy power generation device that can improve the utilization rate of wave energy and the power generation efficiency of the device and improve the overall transmission and survival performance is needed. SUMMARY

[0004] The present application provides a double-floater wave energy power generation device to solve the problem of limited wave energy absorption by a single floater in the prior art.

[0005] The present application provides a double-floater wave energy power generation device, comprising: a connecting rod, two identical floater power generation assemblies; the two floater power generation assemblies are respectively arranged at both ends of the connecting rod;

[0006] The float power generation assembly comprises a float shell, a generator, a connecting rod, a support, a first transmission assembly, a second transmission assembly and a gear ring arranged in the float shell; one end of the connecting rod is hingedly connected to one end of the connecting rod in a rotary pair mode, and the other end of the connecting rod is fixedly connected to the gear ring; the inner ring of the gear ring is provided with two staggered and reverse ratchet racks, and the two ratchet racks are arranged in alignment at one end; the support is vertically arranged in the float shell, one end of the support is fixedly connected to the bottom surface of the float shell, and the other end of the support is hingedly connected to the connecting rod in a rotary pair mode; the connecting rod is arranged in parallel with the support and has the same hinged movement direction; the ratchet rack of the gear ring is meshed with the gear of the input end of the first transmission assembly, and the output end of the first transmission assembly is transmissionally connected to the input end of the generator; the float power generation assembly floats up and down with waves, one side of the float power generation assembly makes lever movement with the hinge point of the support and the connecting rod, drives the connecting rod at the same end and the gear ring connected to the connecting rod to make up-and-down reciprocating movement, the gear ring drives the first transmission assembly to rotate in the same reverse direction through the ratchet rack, and the first transmission assembly drives the input shaft of the generator to rotate to generate electricity.

[0007] Further, the float power generation assembly further comprises a turbofan and a second transmission assembly; the generator is a double-rotor generator; the turbofan is arranged in parallel at the bottom of the float shell, the output shaft of the turbofan penetrates into the float shell and is transmissionally connected to the input shaft of the second transmission assembly, and the output end of the second transmission assembly is transmissionally connected to the other input end of the double-rotor generator.

[0008] Further, the blade chord surface normal in the turbofan is aligned with the rotation shaft.

[0009] Further, the distance between the hinge points of the support and the connecting rod of the float power generation assemblies on two sides is not equal to an integer multiple of the wavelength of the sea waves.

[0010] Further, the support in the float power generation assembly on one side is a spring, and the support in the float power generation assembly on the other side is a support rod.

[0011] The float power generation assembly has the following advantages:

[0012] The application adopts double-floater power generation assembly to make relative heaving motion under wave force, realizes double-floater power generation assembly to generate power at the same time, and improves power generation efficiency. The floater power generation assembly is fixed with a support, the transmission efficiency of the floater energy capturing mechanism is increased through the action of the connecting rod, the engine is continuously rotated to generate power. The normal line of the blade chord surface of the fan is aligned with the rotating shaft, the double fan rotates in one direction all the time, the power mechanism is repeatedly rotated through the transmission mechanism, and the continuity of the generator is ensured. Double floater each adopts a set of system parallel transmission mechanism, increases the relative speed of the generator, can effectively utilize wave energy under the condition of low amplitude of floater and low speed of fan, and improves the utilization rate of wave energy. The double-rotor generator is adopted, the double rotors rotate in opposite directions, the relative speed is more than doubled compared with the stator and the rotor, and the captured energy is greatly improved. The power output system is placed in the floater, which is convenient for maintenance, far away from corrosive seawater, so as to improve the reliability and survivability of the equipment. The device transmission system has simple structure and high energy transmission efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0013] The features and advantages of the present application will be more clearly understood through the following detailed description taken in conjunction with the accompanying drawings, which are given by way of illustration and are not to be considered limiting of the present application, in which:

[0014] Figure 1 It is a schematic diagram of the overall structure of the embodiment of the present application;

[0015] Figure 2 It is an internal perspective view of the embodiment of the present application;

[0016] Figure 3 It is an internal perspective view of the floater power generation assembly of the embodiment of the present application;

[0017] Figure 4 It is a schematic diagram of the fan transmission connection of the embodiment of the present application;

[0018] Figure 5 It is a schematic diagram of the one-way rotation principle of the fan blade of the embodiment of the present application. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in conjunction with the drawings of the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0020] The present invention will be further illustrated below with reference to specific embodiments. Those skilled in the art should understand that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Modifications to the present invention in various equivalent forms all fall within the scope defined by the appended claims.

[0021] This invention provides, for example Figures 1-4 As shown in the figure, a specific embodiment of the present invention provides a dual-buoy wave energy generation device, including: a connecting rod 1, and two identical float power generation components hinged to the connecting rod 1 at both ends by a revolute joint, as shown in the figure. Figures 2-4As shown, the float power generation assembly comprises a float shell 2, a support, a connecting rod 4, a turbofan 5, the support in one float power generation assembly is a spring 31, and the support in another float power generation assembly is a support rod 32. One end of the connecting rod 4 is connected to one end of the connecting rod 1 in a rotary pair mode, and the other end of the connecting rod 4 extends into the float shell 1 and is fixedly connected to the gear ring 11. The gear ring 11 is in the shape of an oval racetrack, and the inner walls of the two straight edges of the gear ring 11 are each provided with a rack 111 in the opposite direction. The two racks 111 are arranged in a staggered manner, and the two ends close to each other are arranged in a position. The rack 111 is engaged with the irregular gear 121 on the first transmission shaft 12, and the two ends of the first transmission shaft 12 are arranged in the float shell 1 through a bearing seat. The turbine 122 on the first transmission shaft 12 is engaged with the worm 13 arranged on the bottom surface of the float shell 1 through a bearing seat, and the output end of the worm 13 is connected to the input end of the outer rotor of the double-rotor engine 14 through the first transmission belt 15. The first transmission shaft 12, the worm 13 and the first transmission belt 15 can constitute a first transmission assembly. One end of the support is hinged to the connecting rod 1 in a rotary pair mode, and the support and the connecting rod 4 move in the same plane relative to the connecting rod 1 with their respective hinge points as the shaft. When the support is a spring 31, the other end of the spring 31 is fixedly connected to a rod vertically arranged on the bottom of the float shell 1, and the whole is vertically arranged, and the first conical gear 16 is connected to the rod through a bearing sleeve; when the support is a support rod 32, the other end of the support rod 32 is fixedly connected to the bottom of the float shell 1, and the whole is vertically arranged, and the first conical gear 16 is connected to the other end of the support rod 32 through a bearing sleeve. The first conical gear 16 is engaged with the second conical gear 17 arranged on the bottom of the float shell 1 through a bearing seat, and the output end of the second conical gear 17 is connected to the input end of the inner rotor of the double-rotor engine through the second transmission belt 18. The first conical gear 16, the second conical gear 17 and the second transmission belt 18 constitute a second transmission assembly. The structure of the first transmission assembly and the second transmission assembly is not limited to the structure given in the specific embodiment of the present application, as long as it can transmit the motion to the input shaft of the double-rotor engine. The distance between the hinge points of the supports of the two-side float power generation assemblies and the connecting rod 1 is not equal to an integer multiple of the wavelength of the sea wave. The turbofan 5 has five blades, and the turbofan 5 is horizontally arranged on the outside of the bottom of the float shell 1. The input shaft of the turbofan 5 extends into the float shell 1 and is coaxially connected to the first conical gear 16. Figure 5 As shown, the blade chord surface normal is aligned with the rotation axis, and when the turbofan rotates, the rotational speed will obviously cause a water flow angle and thereby generate a lift perpendicular to the water flow direction and a drag parallel to the water flow direction. The above forces can be decomposed into an axial force F x and a tangential force F θ (F θ = Lsina-Dcosa, F x= L cos a + D sin a) For a given value of a, the direction of the tangential force is independent of the positive or negative value of a, so the turbofan rotates in one direction regardless of the upward or downward movement of the float.

[0022] The working process of the present application is as follows:

[0023] The present application is placed in the sea, and the float power generation assembly will float on the sea surface and make up and down movement with the waves. Due to the position of the support on both sides of the connecting rod, there will be a high-low difference between the two float power generation assemblies in the waves. In the process of forming the high-low difference, the float power generation assembly on one side will be too high for the connecting rod on that side, similar to the principle of a lever, the float power generation assembly on that side will make a lever movement with the hinge point of the support as the fulcrum, and the connecting rod will move upward to drive the first transmission shaft to rotate through the gear ring, and then to the input end of the outer rotor of the double-rotor generator through the worm and the first transmission belt, to drive the outer rotor to rotate. The float power generation assembly on the other side will make a lever movement with the hinge point of the support as the fulcrum, and at this time the connecting rod will move downward to drive the first transmission shaft to rotate through the gear ring, and then to the input end of the outer rotor of the double-rotor generator through the worm and the first transmission belt, to drive the outer rotor to rotate. Due to the cooperation of the gear ring and the irregular gear, when the float power generation assembly that was originally at the bottom rises, the gear ring can still make the first transmission shaft rotate in the same direction, so as to keep the outer rotor of the double-rotor generator rotating in the same direction. The float power generation assembly moves through the effect of heave inertia, and when the relative displacement amount of the double-float power generation assemblies in the heave direction is small or large, the spring is effectively stretched or compressed, increasing its relative height displacement, which can amplify the movement of the float power generation assembly. Due to the design structure of the turbofan blades, the turbofan will only rotate in one direction under the action of the wave force, and the rotation is transmitted to the input end of the inner rotor of the double-rotor generator through the first and second tapered teeth and the second transmission belt, to drive the inner rotor to rotate. Through the gear cooperation, the inner and outer rotors of the double-rotor generator can rotate in opposite directions, thereby realizing power generation of the double-rotor generator.

[0024] The application has the advantages of ingenious design, reasonable structure, full use of vertical movement of wave energy to drive the device to generate electricity, support member fixed in the float, transmission efficiency of the energy capturing mechanism increased by the effect of the connecting rod, continuous rotation of the engine to generate electricity, improved conversion efficiency of the device, rigid connection of the float and the turbofan, one-way rotation of the double turbofans, repeated rotation of the power mechanism through the transmission mechanism to ensure the continuity of the generator, one set of system for each of the double floats in parallel transmission mechanism to increase the relative rotation speed of the generator, effective use of wave energy under the condition of low amplitude of the float and low speed of the turbofan, improved utilization rate of wave energy, and further conversion of electric energy. The double-rotor generator is adopted, the double rotors rotate in opposite directions, the relative speed is more than doubled compared with the stator and the rotor, and the captured energy is greatly improved. The power output system is placed in the float, which is convenient for maintenance and far away from corrosive seawater, thereby improving the reliability and survivability of the equipment. The transmission system of the device has simple structure and high energy transmission efficiency.

[0025] Although the embodiments of the application are described in conjunction with the drawings, various modifications and changes can be made by those skilled in the art without departing from the spirit and scope of the application, and such modifications and changes fall within the scope defined by the appended claims.

Claims

1. A dual floater wave energy generator, characterised in that, The utility model relates to a floating power generation device, including: a connecting rod, two identical floating power generation assemblies; the two floating power generation assemblies are arranged at the two ends of the connecting rod respectively; the floating power generation assembly includes a floating shell, a generator, a connecting rod, a support, a first transmission assembly, a gear ring, a turbofan and a second transmission assembly are arranged in the floating shell; the generator is a double-rotor generator; one end of the connecting rod is hingedly connected to one end of the connecting rod in the form of a revolute pair, and the other end of the connecting rod is fixedly connected to the gear ring; the inner ring of the gear ring is provided with two misaligned and reverse ratchet racks, and the two ratchet racks are arranged in alignment at one end; the support is vertically arranged in the floating shell, one end of the support is fixedly connected to the bottom surface of the floating shell, and the other end of the support is hingedly connected to the connecting rod in the form of a revolute pair; the connecting rod and the support are arranged in parallel and have the same hinged movement direction; the distance between the hinged points of the supports and the connecting rod of the two floating power generation assemblies is not equal to an integral multiple of the wavelength of the sea wave; the support in one floating power generation assembly is a spring, and the support in the other floating power generation assembly is a support rod; the ratchet rack of the gear ring is meshed with the gear of the input end of the first transmission assembly, the output end of the first transmission assembly is transmissionally connected to the input end of the generator; the floating power generation assembly floats up and down with the sea wave, one floating power generation assembly makes lever movement with the hinged point at the hinge between the support and the connecting rod, drives the connecting rod at the same end and the gear ring connected to the connecting rod to make up-down reciprocating movement, the gear ring drives the first transmission assembly to rotate in the same reverse direction through the ratchet rack, and the first transmission assembly drives the input shaft of the generator to rotate to generate electricity; the turbofan is arranged in parallel at the bottom of the floating shell, the output shaft of the turbofan penetrates into the floating shell and is transmissionally connected to the input shaft of the second transmission assembly, and the output end of the second transmission assembly is transmissionally connected to the other input end of the double-rotor generator; the blade chord surface normal of the turbofan is aligned with the rotation shaft.

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