Floating body suspension wave energy collecting device

Abstract

The invention discloses a floating body suspension wave energy collecting device which comprises a floating body structure connected with a seabed through at least one mooring anchoring system. The conversion part is connected with the mooring and anchoring system and used for converting the tension change of the mooring and anchoring system and the movement of the floating body structure into mechanical movement; the power generation module is connected with the conversion part and used for converting the mechanical motion into electric energy; the mooring and anchoring system, namely a static assembly which only has a fixing function originally, is converted into an energy capture carrier, and dynamic tension and inertial load induced by multi-direction movement such as heaving, rolling, pitching and transverse drifting generated by the floating body under the action of wind, waves and tides are directly utilized; potential energy neglected for a long time can be effectively captured and utilized, an independent energy collecting device does not need to be additionally built in the design, the function is achieved through a mooring system necessary for the floating body, and the energy utilization efficiency of the offshore floating body structure is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of energy acquisition equipment, and more particularly to a floating body suspended wave energy collection device. Background Art

[0002] Wave energy is a specific form of ocean energy and one of the most important energy sources in ocean energy. Its development and utilization are very important to alleviate the energy crisis and reduce environmental pollution. The surging wave movement generates huge, eternal and environmentally friendly energy. If wave energy can be fully utilized, the world's energy prospects will be quite broad and bright.

[0003] Under the influence of natural forces such as wind, waves, and tides, floating bodies at sea will inevitably produce multi-directional movements. These movements generate huge potential energy. As these offshore structures become larger, farther away from the coast, and the waters become deeper, the combination of these factors means that more energy can be captured. However, for a long time, this type of dynamic energy induced by the movement of floating bodies has not been effectively utilized and has been ignored or neglected. The capture and conversion of related energy has also been a neglected technical gap in the industry.

[0004] Therefore, how to provide a floating suspended wave energy harvesting device that can efficiently capture dynamic energy from a mooring anchoring system, has a simple structure and low cost to fill the technical gap in the industry is an urgent problem that needs to be solved by those skilled in the art. Summary of the Invention

[0005] In view of this, the present invention provides a floating body suspended wave energy collection device, aiming to solve the above technical problems.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: A floating body suspended wave energy collection device, comprising: a floating structure connected to the seabed by at least one mooring anchor system; a conversion portion connected to the mooring and anchoring system, configured to convert a tension change of the mooring and anchoring system and a movement of the floating structure into mechanical movement; A power generation module is connected to the conversion unit and is used to convert mechanical motion into electrical energy.

[0007] Preferably, the conversion portion includes a motion conversion amplification module and a spring loading module, the motion conversion amplification module is connected to the mooring anchoring system, and the spring loading module is connected to the motion conversion amplification module.

[0008] Preferably, the motion conversion amplification module includes a fixed pulley assembly connected to a fixed member, and a movable pulley assembly connected to the mooring anchoring system, the fixed pulley assembly and the movable pulley assembly are configured by winding a multi-stage rope, and the rope has a fast end.

[0009] Preferably, two ends of the spring loading module are connected to the fixed pulley assembly and the movable pulley assembly respectively.

[0010] Preferably, the power generation module is connected to the fast end of the rope.

[0011] Preferably, the motion conversion amplification module includes a slide rail and a slider slidably connected to the slide rail, and the slider is connected to the mooring anchoring system.

[0012] Preferably, a pinion is provided in the slide groove of the slide rail, and racks meshing with the pinion are provided on both sides of the slider. The slider is slidably connected to the slide rail through the meshing racks and pinion.

[0013] Preferably, one end of the spring loading module is connected to the fixing member, and the other end is connected to the sliding block.

[0014] Preferably, the power generation module is connected to the pinion.

[0015] Preferably, a protective box is further included, and the conversion part and the power generation module are integrated in the protective box.

[0016] It can be seen from the above technical solutions that, compared with the prior art, the present invention provides a floating body suspended wave energy harvesting device, which has the following beneficial effects: The present invention transforms the mooring and anchoring system, a static component that originally only had a fixing function, into an energy capture carrier. It directly utilizes the dynamic tension and inertial load induced by the multi-directional movements of the floating body under the action of wind, waves and tides, such as heave, roll, pitch and lateral drift, so that the potential energy that has long been neglected can be effectively captured and utilized. This design does not require the construction of an additional independent energy collection device, but relies on the necessary mooring system of the floating body itself to realize its function, greatly improving the energy utilization efficiency of offshore floating structures.

[0017] The present invention converts the tiny wave displacement of the floating body into high-speed mechanical motion by designing a motion conversion and amplification module, significantly amplifying the speed and displacement through mechanical advantages, so that low-amplitude motion that is originally difficult to directly drive the generator is converted into high-efficiency kinetic energy, greatly improving the energy capture and conversion efficiency; and designs a spring loading module to maintain the constant tension of the mooring line to avoid impact on the equipment due to tension fluctuations, and can store transient energy and output it smoothly, solving the problem of unstable power generation caused by the dynamic nature of natural loads and ensuring the continuity and stability of power output.

[0018] The overall structure of the present invention is integrated into a protective box, which fundamentally isolates the environmental influences such as seawater erosion, salt spray corrosion and marine organism attachment, significantly reduces the loss of equipment caused by harsh environments, extends the service life of the equipment, and at the same time reduces maintenance requirements and costs, thereby improving the reliability of the system in complex marine environments.

[0019] The structural design of the present invention is simple and compact. It is modified and integrated based on the existing mooring system, without occupying a large amount of additional space or adding complex independent structures, effectively reducing the overall manufacturing cost. In addition, the structure of the present invention is not limited to a specific type of floating body, and can be adapted to a variety of offshore floating renewable energy equipment such as floating wind turbines, wave power generation devices, tidal power devices, etc. It has a wide range of applications and is easy to promote and apply on a large scale. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention 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 merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0021] Figure 1 The accompanying drawing is a schematic diagram of the overall structure provided by the present invention; Figure 2 The accompanying drawing is a schematic structural diagram of a conversion unit according to Example 1 of the present invention; Figure 3 The accompanying drawing is a schematic structural diagram of a conversion unit according to Example 2 of the present invention; in: 1. Floating structure; 2. Conversion unit; 21. Motion conversion amplification module; 22. Spring loading module; 211. Fixed pulley assembly; 212. Movable pulley assembly; 213. Slide rail; 214. Slider; 3. Power generation module. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] Example 1: See also Figure 1-Figure 2 , an embodiment of the present invention discloses a floating body suspended wave energy collection device, comprising, A floating structure 1 connected to the seabed via at least one mooring anchor system; The mooring and anchoring system is connected between the floating structure 1 and the seabed, and is used to convert the multi-directional movements of the floating structure 1 such as heave, roll, pitch, lateral drift, etc. caused by wind, waves, and tides into tension changes and inertial loads of the mooring line. The mooring and anchoring system can be a single connection method or a combination of multiple materials; mooring ropes or composite materials, wire ropes, chains, etc. can be selected. This is an existing conventional structure and will not be repeated here.

[0024] The conversion unit 2 is connected to the mooring and anchoring system and is used to convert the tension change of the mooring and anchoring system and the movement of the floating structure 1 into mechanical movement; The power generation module 3 is connected to the conversion unit 2 and is used to convert mechanical motion into electrical energy.

[0025] In this embodiment, the conversion unit 2 and the power generation module 3 are integrated into a drying chamber inside the protective box. The chamber has a waterproof and sealed design and a relative humidity control design to avoid erosion by environmental factors and seawater. The protective box is a semi-submersible cylindrical structure.

[0026] The conversion unit 2 includes a motion conversion amplification module 21 and a spring loading module 22 . The motion conversion amplification module 21 is connected to the mooring anchoring system, and the spring loading module 22 is connected to the motion conversion amplification module 21 .

[0027] The motion conversion amplification module 21 includes a fixed pulley assembly 211 connected to a fixed part and a movable pulley assembly 212 connected to a mooring anchoring system. The fixed pulley assembly 211 and the movable pulley assembly 212 are arranged by winding a multi-stage rope, and the rope has a fast end.

[0028] Two ends of the spring loading module 22 are connected to the fixed pulley assembly 211 and the movable pulley assembly 212 respectively.

[0029] The power generation module 3 is connected to the fast end of the rope.

[0030] The motion conversion amplification module 21 is a pulley group, and there is an anchor chain between each group of pulleys connected to the seabed; in the pulley group, the fixed pulley assembly 211 is connected to the fixed part in the protective box, and the movable pulley assembly 212 is connected to the mooring rope end on the floating body side, and moves synchronously with the movement of the floating body. A vertical track and a slider are provided on one side of the movable pulley assembly 212, and the slider is connected to the movable pulley assembly 212 to ensure that the movable pulley assembly 212 can move in the vertical direction. The fixed pulley assembly 211 and the movable pulley assembly 212 are configured by multi-stage rope winding. The two ends of the spring loading module 22 are respectively connected to the fixed pulley assembly 211 and the movable pulley assembly 212, and the fast end of the rope is connected to the power generation module 3.

[0031] Among them, the spring loading module 22 is a mechanical spring. The introduction of the spring loading module 22 and the connection of the fixed pulley assembly 211 and the movable pulley assembly 212 can not only maintain the tension of the mooring line, but also store transient energy and output it smoothly; in the pulley system, the "fast line" high-speed section can also be used to drive the generator to generate electricity.

[0032] When the motion conversion amplification module 21 adopts a pulley system, the pulley system can be single or multiple and can be operated individually. Each pulley system is connected to an anchor mooring, or multiple pulley systems are connected in series with other anchor moorings to generate a reciprocating motion direction.

[0033] When waves act on the floating body, it produces movements such as heave and roll, which drives the tension of the mooring cable to change. Through the pulley group structure, the movement speed and displacement of the fast line are amplified. At the same time, the spring loading module 22 expands and contracts with the pulley group to maintain the continuous movement of the fast line. The power generation module 3 is a generator. The high-speed reciprocating motion of the fast line drives the generator rotor to rotate through the pulley and one-way clutch, converting mechanical energy into electrical energy. Transient excess electrical energy is stored in the lithium battery pack and released during low-voltage periods to ensure stable output voltage. It is finally supplied to the floating body's own equipment or other uses through cables.

[0034] The rise and fall of waves changes the buoyancy of the floating structure and its height above the seabed. Wave forces, tides, and currents also cause the floating structure to move laterally on the water surface, and this lateral movement typically results in changes in the tension of the mooring system. By utilizing the wave-induced tension fluctuations, lateral sway, and lateral drift of the mooring system, the floating structure is fixed to one or more points and sides, causing relatively small linear motion displacement changes at the end of the mooring system cable. Through the motion conversion and amplification module 21, the displacement distance and speed of the end of the mooring system are amplified / enhanced. As a pulley system, this causes the length displacement and movement speed of the rope on the pulley assembly to increase, thereby significantly increasing the lateral motion length and high-speed motion, generating reciprocating motion, which can be converted into mechanical rotational kinetic energy. The high-speed lateral motion of the rope between the pulleys is connected to the generator and power output device via a one-way clutch to maintain the hydraulic / pneumatic energy of the floating structure tensioning system. Because the pulley transmission mainly relies on the friction between the sheave and the rope, the kinetic energy and speed obtained from each lateral motion are unbalanced. The generator not only generates energy but also provides energy storage to stabilize the kinetic energy output.

[0035] Example 2: See also Figure 3 The difference between this embodiment and embodiment 1 is that, in this embodiment, the motion conversion amplification module 21 includes a slide rail 213 and a slider 214 slidably connected to the slide rail 213, and the slider 214 is connected to the mooring anchoring system.

[0036] A pinion is provided in the sliding groove of the slide rail 213 , and racks meshing with the pinion are provided on both sides of the slider 214 . The slider 214 is slidably connected to the slide rail 213 through the meshing racks and pinion.

[0037] One end of the spring loading module 22 is connected to a fixing member in the protective box, and the other end is connected to the slider 214 .

[0038] The power generation module 3 is connected to the pinion gear.

[0039] The slide rail 213 is fixed in the protective box, and a pinion is provided in the slide groove of the slide rail 213. The slider 214 realizes reciprocating motion in the slide rail 213 through the mutually meshing rack and pinion. Through the above design, the reciprocating motion of the slider 214 is converted into the rotational motion of the pinion, and the movement speed is increased through the gear ratio.

[0040] When waves push the floating structure 1 to produce heave and sink motion, the mooring and anchoring system converts the vertical displacement of the floating body into changes in the tension of the cable; the slider 214 rigidly connected to the end of the cable then undergoes reciprocating linear motion; the rack and the special pinion form an engaged transmission pair. The core innovation of this gear set is to convert the slow and large displacement of the floating body into high-speed rotation of the pinion. This motion form conversion significantly increases the output speed; the pinion is connected to the generator through a high-precision one-way clutch to convert mechanical energy into electrical energy; transient excess electrical energy is stored in the lithium battery pack and released during low periods to ensure stable output voltage, and is ultimately supplied to the floating body's own equipment or other uses through cables.

[0041] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Reference can be made to the common and similar parts between the various embodiments. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple, and the relevant parts can be referred to the method description.

[0042] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. 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 invention. Therefore, the present invention 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 floating body suspended wave energy collection device, characterized in that: include, a floating structure connected to the seabed by at least one mooring anchor system; a conversion portion connected to the mooring and anchoring system, configured to convert a tension change of the mooring and anchoring system and a movement of the floating structure into mechanical movement; A power generation module is connected to the conversion unit and is used to convert mechanical motion into electrical energy.

2. A floating body suspended wave energy harvesting device according to claim 1, characterized in that: The conversion portion includes a motion conversion amplification module and a spring loading module. The motion conversion amplification module is connected to the mooring anchoring system, and the spring loading module is connected to the motion conversion amplification module.

3. The floating body suspended wave energy collection device according to claim 2, characterized in that: The motion conversion amplification module includes a fixed pulley assembly connected to a fixed member and a movable pulley assembly connected to the mooring anchoring system. The fixed pulley assembly and the movable pulley assembly are arranged by winding a multi-stage rope, and the rope has a fast end.

4. The floating body suspended wave energy collection device according to claim 3, characterized in that: Two ends of the spring loading module are respectively connected to the fixed pulley assembly and the movable pulley assembly.

5. The floating body suspended wave energy collection device according to claim 4, characterized in that: The power generation module is connected to the fast line end of the rope.

6. The floating body suspended wave energy collection device according to claim 2, characterized in that: The motion conversion amplification module includes a slide rail and a slider slidably connected to the slide rail, and the slider is connected to the mooring anchoring system.

7. The floating body suspended wave energy collection device according to claim 6, characterized in that: A pinion is provided in the slide groove of the slide rail, and racks meshing with the pinion are provided on both sides of the slider. The slider is slidably connected to the slide rail through the meshing racks and pinion.

8. The floating body suspended wave energy collection device according to claim 7, characterized in that: One end of the spring loading module is connected to the fixing member, and the other end is connected to the sliding block.

9. The floating body suspended wave energy harvesting device according to claim 7, characterized in that: The power generation module is connected to the pinion gear.

10. The floating body suspended wave energy collection device according to claim 1, characterized in that: It also includes a protection box, in which the conversion part and the power generation module are integrated.

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