A three-pontoon combined mooring type sloshing wave power generation device

Abstract

The application discloses a kind of three floating pontoon combination mooring type sloshing wave absorbing power generation device;Belong to the field of ocean engineering and wave energy utilization technology, including middle large floating pontoon, left and right small floating pontoon being arranged in the middle large floating pontoon both sides, three segment combination mooring component being connected with the middle large floating pontoon, tension tendon component being connected with both sides small floating pontoon, liquid tank being arranged in the middle large floating pontoon interior, sloshing float being arranged in the liquid tank of the middle large floating pontoon and the like;Three segment combination mooring component is used to provide constraint and recovery effect to the middle large floating pontoon;Left and right small floating pontoon is clamped in the slide of the protruding part of the middle large floating pontoon both sides, locking mechanism is arranged in the slide, locking mechanism can directly lock the middle large floating pontoon when being impacted by extra-large wave, to improve the impact resistance of the device in extreme sea conditions, slide and power generation mechanism are drivingly connected;Liquid tank float is drivingly connected with power generation mechanism.The application can utilize the swing of middle large floating pontoon and the movement of liquid tank sloshing float to realize wave absorbing and power generation.

Description

Technical Field

[0001] This invention belongs to the technical fields of marine engineering, floating wave-damping devices and comprehensive utilization of marine renewable energy, and relates to a three-buoy combined moored swaying wave-damping power generation device; specifically, it relates to a liquid-loaded three-buoy spiral meshing swaying wave-damping power generation device. Background Technology

[0002] With the increasing demand for marine resource development, nearshore aquaculture, offshore platform protection, and integrated marine energy utilization, floating wave damping devices have received growing attention due to their advantages such as easy installation, minimal disturbance to the seabed, and suitability for deep water and soft soil foundation areas. Existing research shows that floating wave damping structures can weaken incident wave energy through mechanisms such as reflection and diffraction, thereby providing a relatively stable aquatic environment for harbor basins, platforms, and offshore facilities.

[0003] To further improve the applicability and comprehensive utilization value of floating wave damping devices, multi-module floating wave damping structures and hybrid systems combined with wave energy utilization devices have emerged in recent years. Some studies have also combined multi-buoy systems with wave energy conversion devices, enabling the device to achieve a certain degree of energy harvesting while damping waves. This indicates that multi-unit floating structures help form more complex wave scattering and structural response modes, thus providing possibilities for improving wave damping performance. On the other hand, multi-buoy coupled floating wave damping devices and floating wave damping-power generation integrated systems can, to a certain extent, balance wave attenuation and energy harvesting. Installing liquid tanks inside the floating body and utilizing liquid sloshing to participate in wave energy dissipation is also an effective way to improve wave damping capabilities. However, current technologies still struggle to simultaneously meet multiple requirements such as multi-buoy differential response, liquid tank sloshing wave damping, extreme sea state protection at connection points, and wave energy power generation. Summary of the Invention

[0004] Purpose of the invention: The purpose of this invention is to provide a three-buoy combined moored swaying wave-damping power generation device that can improve the wave-damping capability, structural safety, and comprehensive utilization value of the device under complex sea conditions.

[0005] The technical solution of the present invention is as follows: The present invention provides a three-buoy combined mooring type swaying wave-damping power generation device, comprising a large intermediate buoy, a liquid tank installed on the bottom side inside the large intermediate buoy, and swaying floats installed inside the liquid tank. A power generation mechanism and a transmission mechanism are respectively installed on both sides of the upper end of the inner wall of the large intermediate pontoon. The transmission mechanism includes two large gears on both sides and a small gear in the middle. The small gear in the middle is connected to the input end of the power generation mechanism. Two large gears on both sides are connected to rods. The other end of one of the rods is connected to the swing output part of the middle large buoy, and the other rod is connected to the end of the large gear and connected to one end of the traction component through a configured hinge device.

[0006] Furthermore, a traction connection hinge device is installed on the swaying float, and traction members on the left and right sides are connected to the upper part of the traction connection hinge device. The other end of the traction member is connected to a large gear of the transmission mechanism on both sides.

[0007] Furthermore, outwardly protruding left and right mounting portions are respectively installed on both sides of the outer wall of the central large pontoon. A left slide rail and a right slide rail are correspondingly opened on the inner side wall of the left and right mounting portions. Locking buckle assemblies are installed inside the left slide rail and the right slide rail.

[0008] Furthermore, left and right small buoys are installed on the outer sides of both ends of the large central buoy. On the side of each of the left and right small buoys facing the large central buoy, there are traveling components that cooperate with the left and right sliding tracks. The left and right small buoys are respectively secured in the corresponding left and right slide rails by the installed traveling components.

[0009] Furthermore, a three-section combined mooring assembly is installed on the outer bottom side of the central large buoy. The three-section combined mooring assembly includes a surface mooring section, an underwater mooring section, and a seabed mooring section connected in sequence.

[0010] Furthermore, the surface mooring section includes two branch mooring components, the upper ends of which are respectively connected to connecting seats arranged at intervals on the left and right sides of the lower part of the central large buoy. Their lower ends are combined into a main branch mooring component and then connected to the underwater mooring section through the installed connecting buckle. The upper end of the underwater mooring section is connected to the surface mooring section via a connecting buckle, and its lower end is connected to the upper end of the seabed mooring section via another installed connecting buckle. The three combined mooring components, consisting of the surface mooring section, the underwater mooring section, and the seabed mooring section, are connected in series to form a complete force chain.

[0011] Furthermore, a counterweight is also provided at the other end of the seabed mooring section, away from the water mooring section.

[0012] Furthermore, the surface mooring section is made of synthetic fiber rope, which is selected from nylon rope, polyester fiber rope and ultra-high molecular weight polyethylene fiber rope; The mooring section in the water is made of synthetic fiber rope, which is selected from one of polyester fiber rope, ultra-high molecular weight polyethylene fiber rope and aramid fiber rope. The seabed mooring section is made of metal anchor chain, which is selected from one of the following: corrosion-resistant steel links, alloy steel links, or anchor chain links with an anti-corrosion coating on the outer surface.

[0013] Furthermore, at least three left-side tension rib assemblies are connected to the lower part of the left small buoy, and at least three right-side tension rib assemblies are connected to the lower part of the right small buoy. The lower ends of the left and right tension rib assemblies are connected to the anchors on the seabed.

[0014] Furthermore, the interior of the liquid tank contains liquid, and the swaying float is partially submerged in the liquid.

[0015] Beneficial Effects: Compared with the prior art, the present invention has the following significant advantages: 1. The present invention uses a three-section combined mooring assembly to connect the central large buoy to the seabed, so that the mooring system not only undertakes the functions of buoy positioning and safety restraint, but also participates in the collaborative design of the swing boundary, recovery characteristics and force transmission path of the central large buoy, thereby improving the motion control capability of the buoy under wave action and enhancing the adaptability of the device in complex sea conditions; 2. The present invention sets small buoys on both sides of the central large buoy and uses the tension rib assembly at the bottom of the small buoys to connect them to the seabed, so that the small buoys on both sides mainly serve as auxiliary restraint support units, while the central buoy... The large central buoy forms a pendulum-like elliptical oscillation relative to the smaller buoys on both sides and the sliding track constraint system. This allows the wave-damping mechanism of the buoy's oscillation to be combined with the mechanical energy extraction process, which is beneficial for balancing wave-damping performance and energy utilization. 3. This invention sets up a liquid tank and a swaying float inside the large central buoy. The swaying of the liquid in the tank and the reciprocating oscillation of the float form a coupled motion. This allows the motion unit inside the liquid tank to not only serve as a power generation input source but also to assist in adjusting the oscillation amplitude, oscillation phase, and recovery process of the large central buoy, thereby achieving synergy between internal oscillation adjustment and external oscillation wave-damping. 4. This invention utilizes the large central buoy... The device generates electricity through the oscillation and swaying motion of the liquid tank floats, enabling energy conversion using different forms of mechanical response at different stages of motion. Even when the oscillation of the central large buoy weakens, the movement of the liquid in the tanks and the swaying floats can continue to drive power generation for a certain period, thus improving overall power generation continuity and comprehensive energy utilization efficiency. 5. This invention integrates three-section combined mooring, large buoy oscillation wave suppression, auxiliary constraint support from two small buoys on both sides, and liquid tank swaying float adjustment and power generation functions into one unit. Compared to floating devices with only a single wave suppression or power generation function, it can achieve wave suppression and wave reduction within the same structural system. The coordinated configuration of vibration and wave energy utilization is conducive to improving the integration level of the device and the comprehensive utilization value of marine space; 6. The present invention sets a locking buckle component inside the slideway, which can lock the adjacent buoys when subjected to extremely large wave impacts, which is conducive to improving the impact resistance and structural safety of the connection parts of the device; 7. The present invention adopts an arrangement of a large central buoy as the main swing and small buoys on both sides as auxiliary constraints, which can improve the force balance through left and right symmetrical constraints while ensuring that the floating body has controllable swing freedom. Therefore, it is conducive to reducing the risk of force concentration at local connection positions and improving the overall structural stability. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the small buoy with the large buoy slideway embedded inside in this invention; Figure 3 This is a schematic diagram of the locking buckle assembly in this invention; Figure 4This is a schematic diagram of the structure of the three-section combined mooring assembly in this invention; Figure 5 This is a schematic diagram showing the connection between the power generation mechanism and the gear transmission mechanism inside the large pontoon in this invention; In the diagram: 1 is the central large buoy, 2 is the left small buoy, 3 is the right small buoy, 4 is the left slipway, 5 is the right slipway, 6 is the locking buckle assembly, 7 is the power generation mechanism, 8 is the gear transmission mechanism, 9 is the liquid tank, 10 is the three-section combined mooring assembly, 11 is the left tension rib assembly, 12 is the right tension rib assembly, 13 is the surface mooring section, 14 is the underwater mooring section, 15 is the seabed mooring section, 16 is the swaying buoy, 17 is the towing component, and 18 is the connecting buckle. Detailed Implementation

[0017] The specific technical solution of the present invention will be further described in detail below with reference to specific examples.

[0018] As shown in the figure, the liquid-loaded three-buoy spiral meshing swaying wave-damping power generation device of the present invention includes a central large buoy 1, a left small buoy 2, a right small buoy 3, a left side slide rail 4, a right side slide rail 5, a locking buckle assembly 6, a power generation mechanism 7, a transmission mechanism 8, a liquid tank 9, a three-section combined mooring assembly 10, a left side tension rib assembly 11, a right side tension rib assembly 12, a surface mooring section 13, a submerged mooring section 14, a seabed mooring section 15, a swaying float 16, a traction component 17, and a connecting buckle 18; The central large buoy 1 serves as the main float of the device and is positioned in the middle of the entire device. The left small buoy 2 and the right small buoy 3 are respectively arranged on the left and right sides of the central large buoy 1. Outwardly protruding mounting portions are respectively installed on the outer walls of the left and right sides of the central large buoy 1. A left slide rail 4 is opened on the inner side of the mounting portion on the left side, and a right slide rail 5 is opened on the inner side of the mounting portion on the right side. Locking buckle assemblies 6 are installed inside the slide rails on the left side and the right side. The small buoys are locked in the corresponding slide rails, and the central large buoy 1 can rotate back and forth along the slide rails. The slideway is located on the inner wall of the side mounting part of the middle large buoy 1; the small buoy is provided with a traveling component that cooperates with the slideway on the side facing the middle large buoy 1, and the locking buckle assembly 6 and the traveling component cooperate in the slideway; since the lower part of the small buoy is connected to the seabed through tension ribs, the motion amplitude of the small buoy under the action of waves is smaller than the motion amplitude of the middle large buoy 1, so that the middle large buoy 1 swings back and forth like a pendulum relative to the small buoys on both sides and the slideway constraint system under the action of waves.

[0019] A liquid tank 9 is installed in the middle area of ​​the bottom side inside the large intermediate pontoon 1, and liquid is contained inside the liquid tank 9; the swaying float 16 is arranged in the liquid tank 9, and is partially submerged in the liquid. The swaying float 16 is located in the liquid tank 9 and swings back and forth with the swaying of the liquid in the liquid tank 9.

[0020] The three-section combined mooring assembly 10 includes a surface mooring section 13, a submerged mooring section 14, and a seabed mooring section 15 connected sequentially from top to bottom. The surface mooring section 13 is located near the sea surface, with its upper end connected to the lower part of the central large buoy 1 and its lower end connected to the submerged mooring section 14. The submerged mooring section 14 is located in the middle water layer, with its upper end connected to the surface mooring section 13 and its lower end connected to the seabed mooring section 15. The seabed mooring section 15 is located near the seabed, with its end away from the submerged mooring section 14 connected to a counterweight.

[0021] The surface mooring section 13 is preferably a bifurcated structure, which includes two branch mooring components, one on the left and one on the right. The upper ends of the two branch mooring components are respectively connected to the connecting seats arranged at intervals on the left and right sides of the lower part of the central large buoy 1. The lower ends of the two branch mooring components merge into a main branch mooring component, which is then connected to the underwater mooring section 14 through the connecting buckle 18. The upper end of the underwater mooring section 14 is connected to the connecting buckle 18, and the lower end is connected to the seabed mooring section 15. This bifurcated connection method can make the lower part of the central large buoy 1 more evenly stressed and facilitate the controlled swing of the central large buoy 1 under the action of waves. In terms of material selection, the water surface mooring section 13 can be made of nylon rope, polyester fiber rope or ultra-high molecular weight polyethylene fiber rope to take into account both flexibility and corrosion resistance. The underwater mooring section 14 can be made of polyester fiber rope, ultra-high molecular weight polyethylene fiber rope, aramid fiber rope or composite cable rope. The seabed mooring section 15 is preferably made of metal anchor chain, such as corrosion-resistant steel anchor chain or alloy steel anchor chain; The surface mooring section 13, the underwater mooring section 14, and the seabed mooring section 15 can be sequentially connected and fixed by connecting buckles 18.

[0022] The left small buoy 2 and the right small buoy 3 are located on the left and right sides of the middle large buoy 1, respectively. The lower part of each small buoy is connected to the seabed through tension rib assemblies (left tension rib assembly 11 and right tension rib assembly 12). Specifically, a left tension rib assembly 11 is installed at the lower part of the left small buoy 2, and a right tension rib assembly 12 is installed at the lower part of the right small buoy 3. The lower ends of the left tension rib assembly 11 and the right tension rib assembly 12 are respectively fixed to the seabed foundation. The function of the tension rib assembly is to provide vertical constraint and position holding for the small buoys, so that the left small buoy 2 and the right small buoy 3 maintain a small motion amplitude under the action of waves. In other words, the two small buoys are not the main motion units of this device, but are mainly used as auxiliary constraint support units for the middle large buoy 1. Thus, under the action of waves, the swing amplitude of the middle large buoy 1 is greater than the motion amplitude of the two small buoys, so that the middle large buoy 1 forms a significant relative swing with respect to the two small buoys and the slide constraint system. When the wave propagates to the device from one side, the middle large buoy 1 is first subjected to wave load and tends to rotate. Since the lower part of the middle large buoy 1 is constrained by the three-section combined mooring assembly 10, and the two sides are geometrically restricted by the left small buoy 2 and the right small buoy 3 through the slide, the middle large buoy 1 will not drift without constraint, but will swing back and forth around the constrained position. Since its motion is simultaneously affected by the mooring restoring force, the geometric constraint of the slide, and the buoyancy recovery effect of the buoy itself, the motion trajectory of the middle large buoy 1 is an elliptical swing trajectory similar to a simple pendulum.

[0023] The locking buckle assembly 6 is located inside the slideway. When encountering extreme wave loads, i.e., when the relative displacement, relative rotation angle or impact load between adjacent buoys reaches a set threshold, the locking buckle assembly 6 engages and locks to improve the impact resistance and structural safety of the connection part under extreme sea conditions. The locking buckle assembly 6 includes a buckle, a locking groove, an elastic reset component, and a trigger component. When the relative displacement, relative rotation angle, or impact load between the middle large buoy 1 and the left small buoy 2 and right small buoy 3 reaches a preset threshold, the trigger component is activated, causing the buckle to engage with the locking groove, thereby locking the adjacent buoys together to prevent the connection from failing or being damaged under conditions of extremely large waves. When the impact load decreases, the locking buckle assembly 6 can be manually released.

[0024] A power generation mechanism 7 and a transmission mechanism 8 are installed on the upper left and right sides of the interior of the large intermediate pontoon 1. The transmission mechanism 8 includes two large gears on both sides and a small gear in the middle. The small gear in the middle is connected to one end of the power generation mechanism 7. The other end of one of the rods is connected to the swing output part of the large intermediate pontoon 1 and is movably inserted in the corresponding left slide rail 4 or right slide rail 5. The other rod is connected to the end of the large gear and is connected to one end of the traction member 17 through a configured hinge device. When the large intermediate pontoon 1 swings in a pendulum-like elliptical manner relative to the small pontoons on both sides and the slide rail constraint system under the action of waves, the transmission mechanism 8 transmits the swing displacement, swing speed or relative rotation angle of the large intermediate pontoon 1 to the power generation mechanism 7 to drive the power generation mechanism 7 to generate electricity. The power generation mechanism 7 is used to convert the oscillating mechanical energy of the central large buoy 1 into electrical energy, and at the same time convert the motion of the swaying float 16 into electrical energy, so that the device has both oscillating wave damping and swaying power generation functions; the transmission mechanism 8 can be a linkage mechanism, the basic principle of which is: when the central large buoy 1 oscillates under the action of waves, the central large buoy 1 generates displacement difference, velocity difference or rotation angle change relative to the two small buoys and the sliding track constraint system. This motion is amplified or converted by the transmission mechanism 8 and transmitted to the power generation mechanism 7, thereby driving the power generation mechanism 7 to generate electricity.

[0025] The liquid tank 9 is located in the middle area inside the central pontoon 1. The swaying float 16 is partially submerged in the liquid in the liquid tank 9, and oscillates back and forth with the liquid under the combined action of the central pontoon 1's oscillation and external waves. Two traction members 17 are installed above the swaying float 16, and the other ends of the two traction members 17 are connected to the transmission mechanism 8. Specifically, when the swaying float 16 moves to the left, the left flexible traction member 17 is relaxed, and the right flexible traction member 17 is tightened, and the input end of the power generation mechanism 7 completes one power generation input. When the swaying float 16 moves back to the right, the right flexible traction member 17 is relaxed, and the left flexible traction member 17 is tightened, and the power generation mechanism 7 continues to receive mechanical input and generate electricity. In this way, each reciprocating swaying process of the swaying float 16 in the liquid tank 9 can drive the power generation mechanism 7 to output electrical energy. The swaying float 16 pulls the traction component 17 to reciprocate under the action of liquid swaying, thereby driving the power generation mechanism 7 to generate electricity; at the same time, the swaying float 16 forms a coupled motion with the liquid in the liquid tank 9, and adjusts the swing amplitude, swing phase or recovery process of the intermediate large float 1 through liquid mass migration and float position change, so as to improve the synergy and power generation continuity of the swing power generation of the intermediate large float 1 and the sway power generation of the liquid tank 9. The swaying float 16 not only serves to generate electricity, but also forms an internal motion regulation unit together with the liquid in the liquid tank 9. When the intermediate large buoy 1 begins to oscillate, the mass distribution of the liquid in the liquid tank 9 will shift with the direction of oscillation, and the swaying float 16 will shift along with the liquid. The mass shift of the liquid and the change in the position of the swaying float 16 will change the instantaneous mass distribution and torque distribution inside the intermediate large buoy 1, thereby regulating the oscillation amplitude, oscillation phase and recovery process of the intermediate large buoy 1. Specifically, in some oscillation stages, the movement of the liquid and the swaying float 16 can form an additional recovery effect on the intermediate large buoy 1, preventing its oscillation from continuously amplifying. In other stages, the hysteretic movement of the liquid and the swaying float 16 can delay the instantaneous recovery process of the intermediate large buoy 1, so that the internal motion continues to exist. Thus, the liquid tank 9 and the swaying float 16 not only participate in wave damping, but can also maintain an internal reciprocating response for a certain period of time after the oscillation of the intermediate large buoy 1 weakens.

Claims

1. A three-buoy combined mooring type swaying wave-damping power generation device, characterized in that, It includes a large intermediate buoy (1), a liquid tank (9) is installed on the bottom side inside the large intermediate buoy (1), and a swaying float (16) is installed inside the liquid tank (9). A power generation mechanism (7) and a transmission mechanism (8) are respectively installed on both sides of the upper end of the inner wall of the middle large pontoon (1). The transmission mechanism (8) includes two large gears on both sides and a small gear in the middle. The small gear in the middle is connected to the input end of the power generation mechanism (7). Two large gears on both sides are connected to rods. The other end of one of the rods is connected to the swing output part of the middle large buoy (1), and the other rod is connected to the end of the large gear and connected to one end of the traction member (17) through a configured hinge device.

2. The three-buoy combined mooring type swaying wave-damping power generation device according to claim 1, characterized in that, A traction connection hinge device is installed on the swaying float (16), and traction members (17) on the left and right sides are connected to the upper part of the traction connection hinge device. The other end of the traction member (17) is connected to a large gear of the transmission mechanism (8) on both sides.

3. The three-buoy combined mooring type swaying wave-damping power generation device according to claim 1, characterized in that, On the outer sides of the middle large pontoon (1), there are outwardly protruding left and right mounting parts. On the inner sidewall of the left and right mounting parts, there are corresponding left slide rails (4) and right slide rails (5). Locking buckle assemblies (6) are installed inside the left slide rails (4) and right slide rails (5).

4. The three-buoy combined mooring type swaying wave-damping power generation device according to claim 3, characterized in that, Left small buoys (2) and right small buoys (3) are installed on the outer sides of both ends of the large central buoy (1). On the side of the left small buoy (2) and right small buoy (3) facing the large central buoy (1), there are traveling parts that cooperate with the left side slide rail (4) and the right side slide rail (5). The left small buoy (2) and the right small buoy (3) are respectively locked in the corresponding left slide rail (4) and right slide rail (5) by the installed walking parts.

5. The three-buoy combined mooring type swaying wave-damping power generation device according to claim 1, characterized in that, A three-section combined mooring assembly (10) is installed on the bottom outside of the central large buoy (1). The three-section combined mooring assembly (10) includes a surface mooring section (13), an underwater mooring section (14), and a seabed mooring section (15) connected in sequence.

6. The three-buoy combined mooring type swaying wave-damping power generation device according to claim 5, characterized in that, The surface mooring section (13) includes two branch mooring components on the left and right. The upper ends of the two branch mooring components are respectively connected to the connecting seats set at intervals on the left and right sides of the lower part of the middle large buoy (1). Their lower ends are combined into a main branch mooring component and then connected to the underwater mooring section (14) through the installed connecting buckle (18). The upper end of the underwater mooring section (14) is connected to the surface mooring section (13) via a connecting buckle (18), and its lower end is connected to the upper end of the seabed mooring section (15) via another installed connecting buckle (18). The three combined mooring components (10), consisting of the surface mooring section (13), the underwater mooring section (14), and the seabed mooring section (15), are connected in series to form a complete force chain.

7. The three-buoy combined mooring type swaying wave-damping power generation device according to claim 6, characterized in that, A counterweight is also provided at the other end of the seabed mooring section (15) away from the water mooring section (14).

8. The three-buoy combined mooring type swaying wave-damping power generation device according to claim 6, characterized in that, The surface mooring section (13) is made of synthetic fiber rope, which is selected from nylon rope, polyester fiber rope and ultra-high molecular weight polyethylene fiber rope; The underwater mooring section (14) is made of synthetic fiber rope, which is selected from one of polyester fiber rope, ultra-high molecular weight polyethylene fiber rope and aramid fiber rope; The seabed mooring section (15) is made of metal anchor chain, which is selected from one of corrosion-resistant steel links, alloy steel links, or anchor chain links with an anti-corrosion coating on the outer surface.

9. The three-buoy combined mooring type swaying wave-damping power generation device according to claim 1, characterized in that, At least three left tension rib assemblies (11) are connected to the lower part of the left small buoy (2), and at least three right tension rib assemblies (12) are connected to the lower part of the right small buoy (3). The lower ends of the left tension rib assembly (11) and the right tension rib assembly (12) are connected to the anchors on the seabed.

10. The three-buoy combined mooring type swaying wave-damping power generation device according to claim 1, characterized in that, The liquid tank (9) contains liquid, and the swaying float (16) is partially submerged in the liquid.

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