Wave power device

Abstract

The present application relates to the technical fields of ocean engineering, and particularly relates to a wave power generation device, comprising at least one single wave power generation unit, the single wave power generation unit comprising: a floating body module, configured to be placed on the sea surface to receive wave action and generate heave motion; two bottom anchoring members, a lower connecting member rigidly connected between the two bottom anchoring members at both ends; two power generation damping units, each power generation damping unit having a fixed end and a movable end, the fixed end being hingedly connected to the bottom anchoring member; two groups of upper cables, symmetrically and obliquely arranged, the lower end of each group of upper cables being connected to the movable end of the corresponding power generation damping unit, and the upper end being connected to the floating body module to pull the movable end when the floating body module performs heave motion; wherein the two bottom anchoring members are kept at a fixed distance apart by the lower connecting member, and the two groups of upper cables are symmetrically and obliquely arranged, so that when the floating body module deflects, a restoring moment opposite to the deflection direction is formed between the two movable ends.

Description

Technical Field

[0001] This invention relates to the field of marine engineering technology, and in particular to a wave-damping and power generation device. Background Technology

[0002] Existing wave-dissipating technologies mostly employ structures such as gravity breakwaters, sloping revetments, wave-dissipating blocks, or floating breakwaters. These technologies consume wave energy through reflection, breaking, friction, or the movement of floating bodies with the waves. However, they generally do not output electrical energy themselves, and the wave energy cannot be recovered and reused after it is consumed, resulting in low energy utilization.

[0003] Existing wave power generation technologies using single-buoy generators typically employ a single mooring rope or a single-point connection to maintain the float's position. When subjected to oblique waves, transverse waves, backflow, or tidal currents, these devices are prone to yaw, twisting, or turning, causing changes in the force direction on the power generation mechanism and impacting power generation efficiency and structural lifespan. Some solutions attempt to improve stability using multi-point mooring or guiding structures; however, existing multi-point mooring schemes lack rigid connections between anchor points, leading to relative displacement under periodic wave loads. This results in uncontrollable float motion, an inability to generate a stable restoring torque, and difficulty in automatically righting the float after deflection. Furthermore, existing wave-damping and power generation structures are often independent, making it difficult to integrate both functions into a single device. Even in attempts to combine the two, issues remain, including poor float motion stability, structural complexity due to the separation of damping and power generation functions, and a lack of effective spacing control and energy collection methods when multiple devices are arrayed. Summary of the Invention

[0004] Therefore, in view of the above problems, the present invention proposes a wave-damping power generation device.

[0005] This invention is achieved through the following technical solution:

[0006] A wave-damping power generation device includes at least one individual wave-damping power generation unit, wherein the individual wave-damping power generation unit comprises:

[0007] A floating module is used to be placed on the sea surface to receive the action of waves and generate heave motion accordingly;

[0008] Two bottom anchors are anchored to the seabed or underwater foundation;

[0009] The lower connector is rigidly connected at both ends to the two bottom anchors respectively;

[0010] Two generating damping units, each generating damping unit having a fixed end and a movable end, the fixed end being hinged to the bottom anchor on the corresponding side;

[0011] Two sets of upper pull cables are symmetrically inclined. The lower end of each set of upper pull cables is connected to the movable end of the corresponding generating damping unit, and the upper end is connected to the left and right sides of the float module, so as to pull the movable end when the float module is in the rising and falling motion.

[0012] The two bottom anchors are kept at a fixed distance by the lower connector, and the two sets of upper cables are symmetrically inclined so that when the float module deflects, a restoring torque is formed between the two moving ends in the opposite direction of deflection.

[0013] As a further improvement of the present invention, the power damping unit includes:

[0014] shell;

[0015] The piston rod has one end extending into the housing and the other end connected to the upper pull cable, thus forming the movable end.

[0016] The moving part is fixed on the piston rod;

[0017] The stator coil is fixed inside the housing and is positioned opposite to the mover.

[0018] A hydraulic damping cavity is disposed within the outer shell, and the hydraulic damping cavity is filled with magnetorheological fluid to provide resistance to the movement of the piston rod;

[0019] A sealing structure is provided at the piston rod extension end and the cable lead-out end to prevent seawater from entering the interior of the outer casing;

[0020] The moving part reciprocates with the piston rod, causing an induced current to be generated in the stator coil;

[0021] An output cable or output terminal is electrically connected to the stator coil and extends out of the housing via the wall of the housing for connection to the power transmission cable.

[0022] As a further improvement of the present invention, the floating body module includes:

[0023] Sphere shell;

[0024] Closed-cell buoyancy foam is used to fill the interior of the spherical shell.

[0025] Connecting seats are located on the left and right sides of the outer shell of the sphere and are used to connect the upper cable;

[0026] An internal skeleton, located inside the outer shell of the sphere and connected to the outer shell of the sphere, is used to distribute the concentrated load at the connection seat.

[0027] As a further improvement of the present invention, the floating module is provided with an inspection port or manhole for inspecting the internal structure or filling with buoyancy foam.

[0028] As a further improvement of the present invention, the bottom anchor includes:

[0029] A rotating hinge base, on which a connecting member is hinged, the connecting member being hinged to the fixed end of the power generation damping unit;

[0030] The connecting platform is fixed to the rotating hinge seat;

[0031] Anchor bolts or expansion bolts are used to secure the connecting platform to the seabed or artificial foundation;

[0032] A waterproof cable connector is provided on the connection platform and is used to connect the output cable or output terminal of the power damping unit.

[0033] As a further improvement of the present invention, the lower connecting member is a steel pipe / section steel / composite material tie rod, and its two ends are connected to the two bottom anchors through flange / pin / threaded connecting members.

[0034] As a further improvement of the present invention, it includes a plurality of individual wave-dissipating power generation units, which are arranged at a preset interval along the shoreline and interconnected by array connectors to form a wave-dissipating array.

[0035] As a further improvement of the present invention, the array connector is provided with a power collection device, which is connected to the power transmission cable of each of the individual wave-damping power generation units, and is used to collect, rectify, stabilize or invert the electrical energy output by each power generation damping unit and output it to the onshore load or energy storage device.

[0036] As a further improvement of the present invention, the power damping unit is also configured with one or more of the following: a rectifier module, a voltage limiting module, an overcurrent protection module, a temperature sensor, a displacement sensor, or a pressure sensor.

[0037] As a further improvement of the present invention, the floating body module is also provided with an adjustable ballast system, the adjustable ballast system comprising:

[0038] Ballast chamber is located inside the float module;

[0039] The water inlet is located at the bottom of the ballast chamber and communicates with the external seawater.

[0040] A water injection valve is installed at the water inlet and is used to control the opening and closing of the water inlet to control the injection of seawater from the outside into the ballast chamber.

[0041] A drain outlet is provided at the bottom or side wall of the ballast chamber;

[0042] A drain valve is installed at the drain outlet;

[0043] A water pump, wherein the water inlet of the water pump is connected to the water outlet, and the water outlet of the water pump is connected to the external seawater.

[0044] The beneficial effects of this invention are:

[0045] 1. This invention utilizes the heave and sway of a floating module under wave action to drive the upper cable-driven damping unit, converting the mechanical energy of the waves into electrical energy output. Simultaneously, the movement of the floating module consumes the kinetic energy of the waves, reducing the wave height reaching the shore and achieving coastal protection. Compared to traditional breakwaters that simply consume wave energy, this invention achieves wave energy recovery and utilization, significantly improving the comprehensive utilization rate of marine energy.

[0046] 2. This invention employs two bottom anchors rigidly connected by a lower connector to form a fixed span foundation, solving the problem of relative displacement at each anchor point in multi-point mooring. Simultaneously, the two sets of upper cables are symmetrically and inclinedly arranged. When the float deflects, the moving ends of the damping units on both sides can generate a restoring torque opposite to the deflection direction, enabling the float to automatically return to its correct position. This effectively suppresses adverse motion postures such as yaw and torsion, ensuring the stability of the power generation mechanism and improving the structural lifespan.

[0047] 3. The power generation and damping unit of this invention integrates the mover, stator coils, and hydraulic damping cavity within a housing. During the reciprocating motion of the piston rod, electromagnetic induction power generation and hydraulic damping are simultaneously achieved, eliminating the need for separate damping components. This results in a compact overall structure and high reliability. Magnetorheological fluid is used as the damping medium, and an adjustable magnetic field electromagnetic coil is configured, allowing the damping force to be adjusted in real time according to the actual wave height and frequency: low damping in light waves ensures normal power generation under gentle waves; high damping in large waves enhances wave dissipation and power generation while suppressing excessive movement of the buoy and preventing structural damage. This ensures the device maintains excellent energy capture efficiency under various sea conditions.

[0048] 4. This invention uses magnetorheological fluid as the damping medium within the generating damping unit. When the piston rod reciprocates, the magnetorheological fluid generates damping force under the influence of flow and magnetic field. This process is accompanied by a significant thermal effect. In addition to the conversion of wave mechanical energy into electrical energy, the remaining portion is converted into heat energy and consumed. The additional energy dissipation path further weakens the wave kinetic energy, significantly improving the wave-damping capability of the device. On the other hand, the generated heat is directly transferred to the surrounding seawater through the metal shell, achieving rapid natural heat dissipation. Compared with traditional hydraulic dampers or pure electromagnetic power generation devices, this invention cleverly utilizes the balance between damping heating and seawater cooling. This avoids the decrease in viscosity and degradation of damping performance caused by heat accumulation and temperature rise of the magnetorheological fluid, and eliminates the need for additional external heat dissipation structures. This allows the device to maintain stable damping characteristics and power generation efficiency under long-term continuous operation, significantly extending its maintenance-free service life in deep-sea environments.

[0049] 5. Multiple individual wave-dissipating and power generation units can be arranged at preset intervals along the shoreline and interconnected with array connectors to form a wave-dissipating array, creating a continuous energy absorption zone. The wave-dissipating effect is far superior to that of a single-point arrangement. Attached Figure Description

[0050] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings to aid in understanding the objectives and advantages of the present invention, wherein:

[0051] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention;

[0052] Figure 2 This is a schematic diagram of the floating body module structure according to an embodiment of the present invention;

[0053] Figure 3 This is a schematic diagram of the damping unit structure according to an embodiment of the present invention;

[0054] Figure 4 This is a schematic diagram of the array structure according to an embodiment of the present invention;

[0055] Figure 5 This is a schematic diagram of the bottom anchor structure in an embodiment of the present invention.

[0056] The following components are labeled in the diagram: 1. Floating body module; 2. Bottom anchor; 3. Generating damping unit; 4. Upper cable; 301. Housing; 302. Piston rod; 303. Mover; 304. Stator coil; 305. Hydraulic damping chamber; 306. Output cable or output terminal; 101. Spherical housing; 102. Closed-cell buoyancy foam; 103. Connecting seat; 104. Internal frame; 201. Rotating hinge; 202. Connecting platform; 203. Waterproof cable connector; 5. Array connector; 6. Current collector. Detailed Implementation

[0057] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0058] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly used in this specification are defined relative to the construction shown in the accompanying drawings. The terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively. These are relative concepts and may therefore vary depending on their location and usage. Therefore, these or other directional terms should not be interpreted as restrictive.

[0059] refer to Figures 1 to 5 The embodiments of the present invention disclose:

[0060] A wave-damping power generation device includes at least one individual wave-damping power generation unit. Each individual wave-damping power generation unit includes a floating module 1, which is positioned on the sea surface to receive wave action and generate heave motion accordingly. Upper pull cables 4 are arranged on the left and right sides of the floating module 1, with two sets of upper pull cables 4 symmetrically inclined. A power-generating damping unit 3 is connected to the lower end of each upper pull cable 4. Each power-generating damping unit 3 has a fixed end and a movable end. The lower end of each upper pull cable 4 is connected to the movable end of the corresponding power-generating damping unit 3 for use in the floating... When the body module 1 undergoes heave motion, it pulls on the movable end. The fixed section of the generating damping unit 3 is hinged with the bottom anchor 2. Two bottom anchors 2 are anchored to the seabed or underwater foundation. A lower connector is provided between the two bottom anchors 2. Specifically, both ends of the lower connector are rigidly connected to the two bottom anchors 2, thus maintaining a fixed distance between the two bottom anchors 2 through the lower connector. The two sets of upper cables 4 are symmetrically inclined, so that when the floating body module 1 deflects, the movement of the two movable ends forms a [relationship / coupling]. The restoring torque has the opposite direction of deflection. During operation, specifically when waves propagate to the device, the float module 1 undergoes heave motion (up and down movement) under the action of buoyancy and wave dynamic pressure. When the float rises, it pulls the upper cables 4 on both sides, causing the upper cables 4 to pull the movable end (piston rod 302) of the generator damping unit 3 outward. When the float descends, under the action of gravity, the restoring force of the generator damping unit 3, or the downward pull of the waves, the upper cables 4 loosen, and the movable end of the generator damping unit 3 retracts. Inside the generator damping unit 3, the movable end drives the mover 303 to move relative to the stator coil 304. The movement (as shown below) generates an induced current, thereby converting the mechanical energy of the waves into electrical energy (power generation function), thus realizing the capture and generation of wave energy; at the same time, as the floating module 1 moves up and down under the action of waves, the movement of the floating module 1 consumes the kinetic energy of the waves, which can reduce the height of the waves reaching the shore, and take into account the function of wave dissipation and protection. That is, it can convert the energy contained in the waves into electrical energy output, and can also achieve coastal protection. Compared with traditional breakwater structures, it has a lower construction cost, less impact on the marine ecological environment, and flexible layout, adapting to different coastal conditions.

[0061] Specifically, in this embodiment, the generating damping unit 3 includes a housing 301, within which a piston rod 302 is disposed. One end of the piston rod 302 extends into the housing 301, and the other end extends out of the housing 301 and is connected to the upper pull cable 4. The piston rod 302 constitutes the movable end. A mover 303 is fixedly disposed at one end of the piston rod 302 located inside the housing 301. A stator coil 304 is fixedly disposed on the inner wall of the housing 301 and is disposed opposite to the mover 303. A hydraulic damping cavity 305 is also disposed inside the housing 301, and the damping medium filled in the hydraulic damping cavity 305 is a magnetorheological fluid. The system is isolated from a gas compensation chamber by a slidable floating piston, the gas compensation chamber being filled with compressed gas. An electromagnetic coil is positioned corresponding to the hydraulic damping chamber 305 to generate an adjustable magnetic field. When the piston rod 302 reciprocates, the mover 303 moves with the piston rod 302, inducing a current in the stator coil 304. Simultaneously, the piston rod 302 pushes the magnetorheological fluid to flow within the hydraulic damping chamber 305, generating basic viscous damping. When the electromagnetic coil is energized to generate a magnetic field, the magnetic particles in the magnetorheological fluid align along the magnetic field lines, increasing the damping force. The magnitude of the damping force is adjusted in real-time by regulating the current intensity of the electromagnetic coil. The function of the gas compensation chamber is as follows: when the piston rod 302 extends, the compressed gas pushes the floating piston to move, keeping the volume of the hydraulic damping chamber 305 constant and completely filled with magnetorheological fluid, thus preventing vacuum cavitation; the sealing structure is provided at the extended end of the piston rod 302 and the cable lead-out end to prevent seawater from entering the interior of the housing 301; the output cable or output terminal 306 is electrically connected to the stator coil 304 and leads out through the wall of the housing to the outside of the housing for connection with the power transmission cable; by integrating the permanent magnet (mover 303) and the stator coil 304 with the magnetorheological fluid damping chamber inside the housing 301, the wave-driven piston rod 302 reciprocates. Simultaneously achieving electromagnetic induction power generation and hydraulic damping generation, thereby absorbing the kinetic energy of the floating module 1, the device structure is simplified, eliminating the complex structure of separate damping and power generation components. The overall structure is compact and more reliable. At the same time, due to the real-time adjustable characteristics of magnetorheological fluid damping, the damping magnitude of the device can be adjusted according to the actual wave height and frequency. Specifically, the damping force is reduced in small waves, the movement of the piston rod 302 driven by the floating module 1 is more gentle, and the current output generated at this time is smaller. The corresponding magnetorheological fluid damping is also smaller, avoiding the device from hindering the movement of the floating body due to excessive damping in small wave conditions, and ensuring that the device can normally capture the energy of low-amplitude waves for power generation.Increasing the damping force during high waves not only improves the device's efficiency in absorbing wave energy and generating more power, but also allows for faster dissipation of wave kinetic energy. Specifically, the floating module 1 drives the piston rod 302 to move more strongly, resulting in a larger current output and correspondingly greater magnetorheological fluid damping. This suppresses excessive movement of the floating module 1, preventing structural damage to the device due to excessive wave impact. While achieving wave dissipation, it also enhances the device's durability and ensures that the device maintains a relatively good energy capture state under different sea conditions, further improving the overall efficiency of wave dissipation and power generation. In addition, the generating damping unit 3 is located in the seawater. When the magnetorheological fluid adjusts the damping, it generates a certain amount of heat, which consumes wave energy (wave energy is converted into heat energy and consumed). This heat can be directly transferred to the surrounding seawater through the shell, achieving rapid natural heat dissipation. This prevents the magnetorheological fluid from overheating and affecting the damping performance after prolonged operation. In other words, it not only improves the wave dissipation effect but also ensures the stability of damping adjustment, extends the service life of the generating damping unit 3, and allows the device to continuously and stably carry out wave dissipation and power generation operations in the marine environment for a long time. ;

[0062] The buoyancy module 1 includes a spherical shell 101, which is filled with closed-cell buoyancy foam 102. Connecting seats 103 are provided on the left and right sides of the outer shell 101 for connecting the upper pull cable 4. An internal skeleton 104 is provided inside the spherical shell 101 to distribute the concentrated load at the connecting seats 103. When the upper pull cable 4 applies tension through the connecting seats 103, the internal skeleton 104 distributes the concentrated load to the entire surface of the shell 301, preventing the shell 301 from cracking due to stress concentration.

[0063] Closed-cell foam needs to be injected during the manufacturing of the float. After long-term use, it may be necessary to check the internal structure, the buoyancy foam status, or install sensors. If there is no inspection port, internal maintenance cannot be performed. Based on this, the float module 1 is provided with an inspection port or manhole, which is connected to the inside of the spherical shell 101 for checking the internal structure or filling buoyancy foam.

[0064] The bottom anchor 2 includes a rotating hinge seat 201, on which a connector is hinged. The connector is hinged to the fixed end of the power generating damping unit 3. A connecting platform 202 is fixed to the rotating hinge seat 201. Anchor bolts or expansion bolts are used to fix the connecting platform 202 to the seabed or artificial foundation. A waterproof cable connector 203 is provided on the connecting platform 202 and is used to connect the output cable or output terminal 306 of the power generating damping unit 3. When the power generating damping unit 3 is working, the fixed end of the power generating damping unit 3 is hinged to the rotating hinge seat 201 through the connector. The rotating hinge seat 201 can swing around the hinge axis within a certain angle range to adapt to the angle changes caused by the movement of the floating module 1 and avoid stress concentration caused by rigid connection. The rotating hinge 201 and the connecting platform 202 below it are fixed to the seabed or artificial foundation by anchor bolts or expansion bolts, and bear the upward pull force and reciprocating impact load transmitted by the damping unit 3. The electrical energy generated by the damping unit 3 is led out through its output cable or output terminal 306, which is connected to the cable waterproof connector 203 set on the connecting platform 202. The waterproof cable connector 203 connects to the underwater cable buried on the seabed or laid in the underwater protection pipeline. The electrical energy output by the generating damping unit 3 is transmitted to the onshore collection device 6, energy storage device or power electronic conversion device via the complete underwater transmission line consisting of the output cable, the waterproof cable connector 203 and the underwater cable. The waterproof cable connector 203 adopts a waterproof connector for long-term underwater immersion and achieves multiple seals through potting, heat shrink sleeve, mechanical compression and secondary protective cover to ensure that the connection point between the output cable and the underwater cable remains watertight in the long-term underwater immersion environment. Since the waterproof cable connector 203 is set on the connection platform 202, which is close to the fixed foundation and far away from the active area of ​​the floating module 1, the underwater cable has a short suspension length and small range of motion at the connection point, which significantly reduces the risk of repeated bending, wear and pull-out of the cable caused by wave action and improves the long-term reliability of the underwater electrical connection.

[0065] The lower connector is a steel pipe / section steel / composite material tie rod, and its two ends are connected to the two bottom anchors 2 through flange / pin / threaded connectors. The rigid connection ensures that the distance between the two bottom anchor points remains unchanged under the reciprocating impact of waves. At the same time, a wire passage can be set inside the lower connector to protect the power transmission cable.

[0066] A single wave-dissipating power generation unit has a limited wave-dissipating width, making it impossible to form continuous nearshore protection. If multiple units are arranged haphazardly, problems such as collisions, cable tangles, and difficulty in collecting electrical energy may occur. Therefore, this design includes multiple single wave-dissipating power generation units, which are arranged at a preset interval along the shoreline and interconnected by array connectors 5 to form a wave-dissipating array. The multiple single wave-dissipating power generation units are arranged at a preset interval along the coastline or protection line, and adjacent units are mechanically connected by array connectors 5 (connecting beams, flexible limiting ropes, float spacers, etc.) to control the spacing between adjacent floating modules 1 and prevent collisions. At the same time, multiple units together form a continuous or quasi-continuous energy absorption zone, and the wave-dissipating effect is far superior to that of a single-point arrangement.

[0067] Since multiple individual wave-damping power generation units generate multiple power sources, if each source were to be individually routed to shore, the sheer number of cables would be excessive, the wiring complex, and the cost high. Therefore, the array connector 5 is equipped with a power collection device 6, which is connected to the transmission cables of each individual wave-damping power generation unit. This device collects, rectifies, stabilizes, or inverts the power output from each wave-damping unit 3 before outputting it to shore loads or energy storage devices. The power output from each individual wave-damping unit 3 is then transmitted to the power collection device 6 via its respective transmission cable. The power collection device 6 collects, connects, or series multiple power sources, then performs rectification, voltage stabilization, step-up / step-down, or inversion processes before finally outputting it to shore loads, batteries, supercapacitors, microgrids, or grid-connected power electronic devices. The collected power is then transmitted to shore via one or a few main cables, reducing the cost and complexity of submarine cable laying.

[0068] The generating damping unit 3 is also equipped with one or more of the following: a rectifier module, a voltage limiting module, an overcurrent protection module, a temperature sensor, a displacement sensor, or a pressure sensor. The rectifier module is used to rectify the AC power generated by the stator coil 304 into DC power for subsequent current collection and energy storage. The voltage limiting module / overcurrent protection module is used to automatically cut off or limit the output when the output voltage or current exceeds a set threshold, protecting the generating damping unit 3 and downstream circuits. The temperature sensor is used to monitor the internal temperature of the generating damping unit 3 to prevent overheating damage. The displacement sensor is used to monitor the stroke position of the piston rod 302 to calculate the amplitude and frequency of the float movement and feed it back to the control system to adjust the damping or load. The pressure sensor is used to monitor the hydraulic pressure in the hydraulic damping chamber 305 to determine the damping status and whether there is a leak in the seal.

[0069] Furthermore, sea level fluctuates tidally (tidal range can reach several meters). A floating body with a fixed draft may have insufficient draft at low tide (small range of motion, low power generation), and may have excessive draft at high tide (submerging the floating body, weakened wave action). The floating body module 1 is also equipped with an adjustable ballast system, which includes: a ballast chamber located inside the floating body module 1; a water inlet located at the bottom of the ballast chamber and connected to external seawater; a water injection valve located at the water inlet to control the opening and closing of the water inlet to control the injection of seawater into the ballast chamber from the outside; a drain outlet located at the bottom or side wall of the ballast chamber; a drain valve located at the drain outlet; and a water pump, with its inlet connected to the drain outlet and its outlet connected to external seawater. When increasing draft ( When adapting to low tide or when increasing inertia is required, the water injection valve is opened, and seawater automatically flows into the ballast chamber through the inlet (because the ballast chamber is under atmospheric pressure or negative pressure, the external water pressure pushes the seawater in). After the seawater is injected, the total weight of the float module 1 increases, the draft increases, and the float module 1 sinks to a lower position. When the draft is reduced (to adapt to high tide or when inertia is required), the water injection valve is closed, the drain valve is opened, and the water pump is started. The water pump draws the seawater out of the ballast chamber through the drain outlet and discharges it to the outside seawater through the water pump outlet. After the seawater is discharged, the total weight of the float module 1 is reduced, the draft decreases, and the float module 1 floats to a higher position. Thus, by adjusting the draft, the hydrodynamic characteristics of the float module 1 are changed, so that the device can maintain a high wave energy absorption rate under different wave periods, reducing the erosion of the shore slope by wave reflection.

[0070] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A wave-damping power generation device, characterized in that: It includes at least one individual wave-damping power generation unit, the individual wave-damping power generation unit comprising: The floating module (1) is used to be placed on the sea surface to receive the action of waves and generate heave motion accordingly; Two bottom anchors (2) are anchored to the seabed or underwater foundation; The lower connector is rigidly connected at both ends to the two bottom anchors (2); Two power damping units (3), each of the power damping units (3) having a fixed end and a movable end, the fixed end being hinged to the bottom anchor (2) on the corresponding side. Two sets of upper pull cables (4) are symmetrically inclined. The lower end of each set of upper pull cables (4) is connected to the movable end of the corresponding generating damping unit (3), and the upper end is connected to the left and right sides of the floating module (1) to pull the movable end when the floating module (1) is in a rising and falling motion. Among them, the two bottom anchors (2) are kept at a fixed distance through the lower connector, and the two sets of upper cables (4) are symmetrically inclined so that when the float module (1) deflects, a restoring torque opposite to the deflection direction is formed between the two moving ends.

2. The wave-damping and power generation device according to claim 1, characterized in that: The power damping unit (3) includes: Outer casing (301); The piston rod (302) has one end inserted into the housing (301) and the other end connected to the upper cable (4), and the piston rod (302) constitutes the movable end; The mover (303) is fixed to the piston rod (302); The stator coil (304) is fixed inside the housing (301) and is disposed opposite to the mover (303); A hydraulic damping cavity (305) is disposed inside the outer shell (301), and the hydraulic damping cavity (305) is filled with magnetorheological fluid to provide resistance to the movement of the piston rod (302); A sealing structure is provided at the protruding end of the piston rod (302) and the cable lead-out end to prevent seawater from entering the interior of the outer shell (301); The mover (303) reciprocates with the piston rod (302), causing the stator coil (304) to generate an induced current; An output cable or output terminal (306) is electrically connected to the stator coil (304) and extends out of the housing via the wall of the housing for connection to the power transmission cable.

3. The wave-damping and power generation device according to claim 1, characterized in that: The floating module (1) includes: Sphere shell (101); Closed-cell buoyancy foam (102) is filled inside the spherical shell (101); Connecting seats (103) are located on the left and right sides of the outer shell (101) of the sphere and are used to connect the upper cable (4). An internal skeleton (104) is disposed inside the spherical shell (101) and connected to the spherical shell (101) to distribute the concentrated load at the connecting seat (103).

4. The wave energy power plant according to claim 3, characterized in that: The floating module (1) is provided with an inspection port or manhole for inspecting the internal structure or filling with buoyancy foam.

5. The wave energy power plant according to claim 2, characterized in that: The bottom anchor (2) includes: A rotating hinge (201) is provided with a connecting member, which is hinged to the fixed end of the power generation damping unit (3). The connecting platform (202) is fixed to the rotating hinge (201); Anchor bolts or expansion bolts are used to secure the connecting platform (202) to the seabed or artificial foundation; A waterproof cable connector (203) is provided on the connection platform (202) for connecting the output cable or output terminal (306) of the power damping unit (3).

6. The wave energy power plant according to claim 5, characterized in that: The lower connecting member is a steel pipe / section steel / composite material tie rod, and its two ends are connected to the two bottom anchors (2) through flange / pin / threaded connecting members.

7. The wave energy power plant according to claim 1, characterized in that: It includes multiple individual wave-dissipating and power-generating units, which are arranged at a preset interval along the shoreline and connected to each other by array connectors (5) to form a wave-dissipating array.

8. The wave energy power plant according to claim 7, characterized in that: The array connector (5) is provided with a power collection device (6), which is connected to the power transmission cable of each of the individual wave-damping power generation units. It is used to collect, rectify, stabilize or invert the electrical energy output by each power generation damping unit (3) and output it to the onshore load or energy storage device.

9. The wave energy power plant according to claim 1, characterized in that: The power damping unit (3) is also equipped with one or more of the following: a rectifier module, a voltage limiting module, an overcurrent protection module, a temperature sensor, a displacement sensor, or a pressure sensor.

10. The wave energy power plant according to claim 3, characterized in that: The floating body module (1) is also provided with an adjustable ballast system, which includes: Ballast chamber is located inside the float module (1); The water inlet is located at the bottom of the ballast chamber and communicates with the external seawater. A water injection valve is installed at the water inlet and is used to control the opening and closing of the water inlet to control the injection of seawater from the outside into the ballast chamber. A drain outlet is provided at the bottom or side wall of the ballast chamber; A drain valve is installed at the drain outlet; A water pump, wherein the water inlet of the water pump is connected to the water outlet, and the water outlet of the water pump is connected to the external seawater.

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