A multi-stage damping vibration reduction system for a deep-sea floating energy island

Abstract

The present application relates to the technical field of floating energy island, and discloses a deep-sea floating energy island multistage damping vibration reduction system, which comprises a base, a top plate fixed on the base, and a buffer assembly arranged on the base, wherein the buffer assembly is composed of a plurality of primary buffer structures, the primary buffer structures are distributed in a circumferential array around the base, each primary buffer structure comprises a first buffer plate, each first buffer plate is fixed with a flow guide plate on the side surface, and each flow guide plate is provided with two symmetrical inclined surfaces.

Description

Technical Field

[0001] This invention relates to the field of floating energy island technology, and more particularly to a multi-stage damping vibration reduction system for deep-sea floating energy islands. Background Technology

[0002] A deep-sea floating energy island is an integrated energy platform that floats in deep-sea areas. It aims to achieve efficient energy production and conversion by integrating multiple renewable energy technologies. Its core functions include power generation, energy storage, hydrogen production, and comprehensive utilization of marine resources.

[0003] Floating platforms at sea are constantly exposed to complex dynamic loads such as wind, waves, currents, and earthquakes. Vibration issues directly affect structural safety and operational efficiency, making cushioning and vibration reduction crucial. Floating platforms rely on built-in spring damping systems for cushioning, but springs have limited lifespans and cannot be replaced manually on a regular basis. This characteristic leads to the platform being in a high-vibration-risk environment for extended periods. In the marine environment, springs are susceptible to salt spray corrosion, moisture erosion, and strong impact loads, accelerating material fatigue and gradually reducing performance. Their vibration-damping effect decreases significantly over time, failing to effectively absorb wind and wave energy. This, in turn, subjects the platform structure to greater dynamic stress, increasing the risk of fatigue damage. Furthermore, spring aging or breakage can trigger a chain reaction, such as stress concentration leading to loosening or damage to connecting components, further exacerbating platform vibration and even affecting equipment stability and operational safety. Because regular replacement is not possible, the platform requires frequent shutdowns for maintenance, increasing maintenance costs, interrupting marine resource development or clean energy production, and reducing overall operational efficiency.

[0004] Therefore, it is necessary to design a multi-stage damping vibration reduction system for deep-sea floating energy islands to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a multi-stage damping vibration reduction system for deep-sea floating energy islands.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A multi-stage damping vibration reduction system for a deep-sea floating energy island includes a base, a top plate fixed on the base, and a buffer assembly on the base. The buffer assembly is composed of several primary buffer structures, which are arranged in a circumferential array around the base. Each primary buffer structure includes a first buffer plate, and a guide plate is fixed to the side of each first buffer plate. Each guide plate has two symmetrical inclined surfaces.

[0007] As a preferred embodiment of the present invention, the primary buffer structure further includes two first slide rods and one second slide rod. The two first slide rods are fixed to the side of the base, and a sliding plate is slidably sleeved on the two first slide rods. The first buffer plate is fixed to the side of the sliding plate. The second slide rod is fixed to the bottom surface of the base, and a counterweight seat is slidably sleeved on the second slide rod. The primary buffer structure also includes a mounting rod and a pulley. The mounting rod is fixed to the side of the base, and the pulley is fixed to the end of the mounting rod away from the base. The first buffer plate and the counterweight seat are connected by a first pull rope, which passes around the pulley.

[0008] As a preferred embodiment of the present invention, the back of the first buffer plate is provided with a groove for adapting to the sliding plate, and the sliding plate is embedded in the groove so that the side of the first buffer plate is flush with the side of the sliding plate.

[0009] As a preferred embodiment of the present invention, each of the second slide rods is provided with a secondary buffer structure. The secondary buffer structure includes a counterweight slide sleeve, two first connecting rods, two second connecting plates, and a third slide rod. The counterweight slide sleeve is slidably sleeved on the second slide rod. The two first connecting plates are rotatably mounted on the counterweight slide sleeve. The two second connecting plates are rotatably mounted on the top of the second slide rod. The two first connecting plates are rotatably connected to the two second connecting plates respectively. The third slide rod is fixed on the second slide rod and is perpendicular to the second slide rod. A second buffer plate is slidably sleeved on the third slide rod. A fixing block is fixed on the side of the second buffer plate. The fixing block is directly opposite the hinge position of the first connecting plate and the second connecting plate. The fixing block is connected to the counterweight slide sleeve by a second pull rope. Two limiting rods are fixed on the second slide rod. The two limiting rods are respectively positioned directly opposite the two second connecting plates.

[0010] As a preferred embodiment of the present invention, the inner ring of the counterweight sliding sleeve is in contact with the outer surface of the second sliding rod.

[0011] As a preferred embodiment of the present invention, each of the counterweights is fixed with a crossbar, and the base is provided with a damping adjustment component. The damping adjustment assembly includes a fixed column and a hydraulic cylinder. The fixed column is fixed to the bottom surface of the base and is hollow inside. The fixed column has several openings, each of which communicates with the interior of the fixed column. A damping plate is slidably disposed in each opening. A fixing plate is fixed to the side of each damping plate. Each fixing plate has an inclined surface. The fixing plates are located inside the fixed column. The hydraulic cylinder is installed inside the base. The telescopic end of the hydraulic cylinder extends into the interior of the fixed column and is fixed with a push block. The push block is positioned opposite the inclined surface of the fixing plates. The damping plates are arranged in a circumferential array. The crossbars are in contact with the damping plates respectively.

[0012] As a preferred embodiment of the present invention, each of the crossbars has a slot at the end away from the counterweight, the damping plate extends into the slot, and the side of the damping plate fits against the slot wall.

[0013] As a preferred embodiment of the present invention, a plurality of the counterweight seats are arranged in a circumferential array around the fixed column.

[0014] As a preferred embodiment of the present invention, the base is provided with a gathering assembly for gathering a plurality of first buffer plates. The gathering assembly includes a gear ring and a motor. The gear ring is rotatably mounted on the base, and the motor is installed inside the base. The output shaft of the motor is fixed with a gear, and the gear meshes with the gear ring. A plurality of third pull ropes are connected to the gear ring, and the ends of the plurality of third pull ropes away from the gear ring are respectively connected to a plurality of first buffer plates.

[0015] As a preferred embodiment of the present invention, the gear and gear ring are subjected to corrosion-resistant treatment.

[0016] The present invention has the following beneficial effects: 1. In the present invention, in the primary buffer structure, the first buffer plate moves under the impact of seawater, and the counterweight moves upward through the first pull rope and pulley, converting the kinetic energy of the seawater into the gravitational potential energy of the counterweight. The guide plate changes the direction of the seawater flow and reduces the impact force. The secondary buffer structure is triggered when the impact force of the seawater is large. The counterweight pushes the counterweight sliding sleeve to move upward, and the second buffer plate moves through mechanical linkage. The resistance of the seawater is used to further consume energy, enhance the impact resistance, and effectively reduce the force of the seawater impact on the base. The entire buffer system does not require springs and can achieve efficient buffering. 2. In this invention, the damping adjustment component can automatically adjust the damping according to the seawater flow rate. When the flow rate increases, the hydraulic cylinder pushes the damping plate outward to increase the friction with the crossbar and increase the resistance of the counterweight. When the flow rate decreases, the damping plate moves inward to reduce the friction and resistance. Through the flow rate detection and hydraulic control system, the damping adjustment is ensured to be stable and accurate, so that the buffer structure can work well under different seawater conditions and protect the base and equipment. 3. In this invention, the retracting component can retract the first buffer plate when the base moves. The motor drives the gear to rotate the gear ring, and the gear ring pulls the first buffer plate close to the base until it fits together through the third pull rope, which greatly reduces the contact area between the first buffer plate and the seawater, reduces the seawater resistance, and facilitates the smooth movement of the base in the seawater. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a multi-stage damping vibration reduction system for a deep-sea floating energy island proposed in this invention. Figure 1 ; Figure 2 This is a schematic diagram of the structure of a multi-stage damping vibration reduction system for a deep-sea floating energy island proposed in this invention. Figure 2 ; Figure 3 This is a cross-sectional structural schematic diagram of a multi-stage damping vibration reduction system for a deep-sea floating energy island proposed in this invention. Figure 4 This is a schematic diagram of a primary buffer structure and a secondary buffer structure. Figure 5 for Figure 4 Enlarged view of the structure at point A; Figure 6 This is a diagram showing the operational status of the secondary buffer structure. Figure 7 A schematic diagram of the structure when several first buffer plates are retracted to the side of the base; Figure 8 This is a schematic diagram of the damping adjustment component.

[0018] In the diagram: 1. Base; 11. Top plate; 21. First slide rod; 22. Sliding plate; 23. First buffer plate; 24. Guide plate; 25. Mounting rod; 26. Pulley; 27. Second slide rod; 28. Counterweight seat; 281. Crossbar; 29. ​​First pull rope; 31. Counterweight sleeve; 32. Third slide rod; 321. Protruding strip; 33. Second buffer plate; 331. Fixing block; 34. First connecting plate; 35. Second connecting plate; 36. Limiting rod; 37. Second pull rope; 41. Fixing column; 411. Opening; 42. Damping plate; 421. Fixing plate; 43. Hydraulic cylinder; 44. Push block; 51. Gear ring; 52. Third pull rope; 53. Motor; 54. Gear. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0020] Example 1 This embodiment describes a multi-stage damping vibration reduction system for a deep-sea floating energy island, as disclosed in this embodiment, with reference to... Figure 1-6 The system includes a base 1, on which a top plate 11 is fixed. The base 1 serves as a buoy structure to provide buoyancy. An energy supply module is installed on the top plate 11. The base 1 is equipped with structures such as floats to increase buoyancy. This is prior art and is not shown in the figure. It will not be described in detail here. The base 1 is equipped with a buffer assembly, which consists of several primary buffer structures. The primary buffer structures are arranged in a circumferential array around the base 1. Each primary buffer structure includes two first slide rods 21 and one second slide rod 27. The two first slide rods 21 are fixed to the side of the base 1. A sliding plate 22 is slidably mounted on each of the two first slide rods 21. A first buffer plate 23 is fixed to the side of the sliding plate 22. When the first buffer plate 23 moves, the two first slide rods 21 provide a limit to its movement, ensuring the stability of the first buffer plate 23. Additionally, a slot for the sliding plate 22 is provided on the back of the first buffer plate 23, allowing the sliding plate 22 to be inserted into the slot, making the side of the first buffer plate 23 flush with the side of the sliding plate 22, facilitating the first slide plate to fit against the side of the base 1. A guide plate 24 is fixed to the side of the first buffer plate 23, and the guide plate 24 is provided with… Two symmetrical inclined planes, the flow guide plate 24 guides the surging seawater, thereby reducing the impact of seawater on the first buffer plate 23; the second sliding rod 27 is fixed to the bottom surface of the base 1, and a counterweight 28 is slidably sleeved on the second sliding rod 27. A ball cap is fixed to the bottom end of the second sliding rod 27, and the ball cap provides constraint on the counterweight 28. In the initial state, under the action of the counterweight 28's own weight, the counterweight 28 falls on the ball cap. The primary buffer structure also includes a mounting rod 25 and a pulley 26. The mounting rod 25 is fixed to the side of the base 1, and the pulley 26 is fixed to the end of the mounting rod 25 away from the base 1. The first buffer plate 23 and the counterweight 28 are connected by a first pull rope 29, which passes around the pulley 26.

[0021] The implementation principle of this embodiment is as follows: Since several primary buffer structures are completely identical, only the specific principle of any one of them will be explained here. In the initial state, under the gravity of the counterweight 28 itself, the counterweight 28 is located at the bottom end of the second slide bar 27. The counterweight 28 and the first buffer plate 23 are connected by the first pull rope 29. Under the traction of the first pull rope 29, the first buffer plate 23 is located away from the base 1. When seawater impacts the base 1, the seawater will first push the first buffer plate 23. When the first buffer plate 23 is pushed by the seawater, it can move and move closer to the base 1. During the movement of the first buffer plate 23, because the first buffer plate 23 and the counterweight 28 are connected by the first pull rope 29, the first buffer plate 23 is located away from the base 1. A first pull rope 29 is connected and passes around a pulley 26 fixed on the mounting rod 25. According to the principle of force transmission, the movement of the first buffer plate 23 will pull the first pull rope 29. Under the guidance of the pulley 26, the first pull rope 29 converts the horizontal tension into a tension along the second slide rod 27, which in turn pulls the counterweight 28 to move upward along the second slide rod 27. During the upward movement, the counterweight 28 needs to do work against its own gravity. According to the law of conservation of energy, part of the kinetic energy of the seawater impacting the first buffer plate 23 is converted into the gravitational potential energy of the counterweight 28. As the first buffer plate 23 moves closer to the base 1, the counterweight 28 rises continuously, the gravitational potential energy increases continuously, and the energy of the seawater impact is gradually consumed.

[0022] Meanwhile, the guide plate 24 fixed to the side of the first buffer plate 23 has two symmetrical inclined surfaces. When the seawater surges and impacts, the special shape of the guide plate 24 can change the direction of seawater flow and guide the seawater. The guiding design can change the direction and magnitude of the force exerted by the fluid on the object. The guide plate 24 diverts some seawater along the inclined surface, thereby reducing the impact force of the seawater vertically impacting the first buffer plate 23 and further reducing the impact of the seawater impact on the base 1. In summary, the multiple primary buffer structures effectively reduce the force of the seawater impact on the base 1 and achieve a good buffering effect.

[0023] Example 2 Based on Example 1, this example discloses a multi-stage damping vibration reduction system for a deep-sea floating energy island, such as... Figure 4-6As shown, each second slide rod 27 is provided with a secondary buffer structure, which includes a counterweight slide sleeve 31, two first connecting plates 34, two second connecting plates 35, and a third slide rod 32. The counterweight slide sleeve 31 is slidably sleeved on the second slide rod 27. The two first connecting plates 34 are rotatably mounted on the counterweight slide sleeve 31, and the two second connecting plates 35 are rotatably mounted on the top of the second slide rod 27. The two first connecting plates 34 are rotatably connected to the two second connecting plates 35 respectively. The third slide rod 32 is fixed on the second slide rod 27, and the third slide rod 32 is perpendicular to the second slide rod 27. The third slide rod 32 is slidably fitted with a second buffer plate 33. A fixing block 331 is fixed on the side of the second buffer plate 33. The fixing block 331 is directly opposite the hinge position of the first connecting plate 34 and the second connecting plate 35. The fixing block 331 is connected to the counterweight slide sleeve 31 by a second pull rope 37. Two limiting rods 36 are fixed on the second slide rod 27. The two limiting rods 36 are respectively set directly opposite the two second connecting plates 35. A protrusion 321 is fixed on the second slide rod 27 to prevent the second buffer plate 33 from rotating. The two limiting rods 36 provide limits for the two second connecting plates 35 respectively. like Figure 5 As shown, in the initial state, the two second connecting plates 35 are in contact with the two limiting rods 36 respectively. At this time, the first connecting plate 34 and the second connecting plate 35 form an obtuse angle of nearly 180°. This design facilitates the rotation of the first connecting plate 34 and the second connecting plate 35. In addition, the gravity of the counterweight sleeve 31 acts on the two first connecting plates 34. In the initial state, the counterweight sleeve 31 is located near the counterweight seat 28. The counterweight sleeve 31 is connected to the fixed block 331 through the second pull rope 37, which makes the second buffer plate 33 located near the second sliding rod 27.

[0024] The implementation principle of this embodiment is as follows: The secondary buffer structure relies on the synergistic effect of mechanical linkage and seawater resistance to further buffer the overall structure when the seawater impact force is large. During the primary buffering process, when the seawater impact force is small, the first buffer plate 23 only moves slightly, thereby causing the counterweight seat 28 to move slightly upward. At this time, the counterweight seat 28 has not yet touched the counterweight sliding sleeve 31, and the secondary buffer structure is not triggered. However, when the seawater impact force is large, the movement range of the first buffer plate 23 increases significantly. The first pull rope 29 pulls the counterweight seat 28 to move significantly upward along the second sliding rod 27. As the counterweight seat 28 continues to rise, it contacts the counterweight sliding sleeve 31 and pushes the counterweight sliding sleeve 31 to slide upward along the second sliding rod 27. Since the two first connecting plates 34 are rotatably installed on the counterweight sliding sleeve 31 and the two second connecting plates 35 are rotatably installed on the top of the second sliding rod 27, and the first connecting plates 34 and the second connecting plates 35 are rotatably connected, when the counterweight sliding sleeve 31 moves upward, it causes the first connecting plates 34 and the second connecting plates 35 to rotate.

[0025] In the initial state, the two second connecting plates 35 are in contact with the two limiting rods 36 respectively, and the first connecting plate 34 and the second connecting plate 35 form an obtuse angle of approximately 180°. This structure provides good initial conditions for the rotation of the first connecting plate 34 and the second connecting plate 35. During the rotation process (such as... Figure 6 As shown, the hinge position of the first connecting plate 34 and the second connecting plate 35 gradually approaches the fixing block 331 on the side of the second buffer plate 33. When the counterweight sliding sleeve 31 moves upward, its gravity is transmitted to the hinge position through the first connecting plate 34 and the second connecting plate 35, generating an outward thrust on the hinge position, causing the hinge position to push the fixing block 331, thereby driving the second buffer plate 33 to move along the third sliding rod 32. The second buffer plate 33 is submerged in seawater. According to the principle of fluid mechanics, when an object moves in a fluid, it will be subject to resistance opposite to the direction of movement. During the movement of the second buffer plate 33, it is subject to the resistance of the seawater. The direction of this resistance is opposite to the direction of movement of the second buffer plate 33, hindering the movement of the second buffer plate 33. The seawater resistance consumes part of the energy of the seawater impact, converting the kinetic energy of the seawater into other forms of energy such as heat energy, thereby further reducing the force of the seawater impact on the base 1. Through the synergistic effect of the above mechanical linkage and the seawater resistance, the secondary buffer structure effectively plays a buffering role when the seawater impact force is large, further enhancing the impact resistance of the overall structure.

[0026] As the waves recede and the impact force decreases, the secondary buffer structure has the ability to automatically reset. When the waves recede and the impact force decreases, the resistance of the seawater to the second buffer plate 33 decreases. At this time, the weight of the counterweight sleeve 31 itself comes into play. Since the second pull rope 37 connects the counterweight sleeve 31 to the fixed block 331, the weight of the counterweight sleeve 31 will generate a pulling force through the second pull rope 37, attempting to pull the second buffer plate 33 back to its initial position close to the second slide rod 27. Simultaneously, as the impact force of the seawater decreases, the movement range of the first buffer plate 23 becomes smaller, and the counterweight seat 28 moves downward, no longer exerting resistance on the second buffer plate 33. The counterweight sliding sleeve 31 applies an upward pushing force. Under the combined influence of the counterweight sliding sleeve 31's own weight being pulled by the second pull rope 37 and the counterweight seat 28 no longer applying an upward force, the counterweight sliding sleeve 31 will slide downward along the second sliding rod 27. The first connecting plate 34 and the second connecting plate 35 rotate in opposite directions, and the hinge position moves away from the fixed block 331. With the reduced tension of the second pull rope 37 and the reduced seawater resistance, the second buffer plate 33 can be smoothly pulled back to its initial position, thereby realizing the automatic reset of the entire secondary buffer structure and preparing for the next possible seawater impact.

[0027] Example 3 Based on Example 2, this example discloses a multi-stage damping vibration reduction system for a deep-sea floating energy island, such as... Figure 8As shown, a damping adjustment assembly is provided on the base 1. The damping adjustment assembly includes a fixed column 41 and a hydraulic cylinder 43. The fixed column 41 is fixed to the bottom surface of the base 1. The fixed column 41 is hollow inside and has several openings 411. Each opening 411 communicates with the interior of the fixed column 41. A damping plate 42 is slidably arranged in each opening 411. A fixing plate 421 is fixed to the side of each damping plate 42. Each fixing plate 421 has an inclined surface. Several fixing plates 421 are located inside the fixed column 41. The hydraulic cylinder 43 is installed inside the base 1. The telescopic end of the hydraulic cylinder 43 extends into the interior of the fixed column 41 and is fixed with a push block 44. The push block 44 is set opposite to the inclined surface of several fixing plates 421. Several damping plates 42 are distributed in a circumferential array. Each counterweight seat 28 is fixed with a crossbar 281. Several crossbars 281 are in contact with several damping plates 42 respectively. Each crossbar 281 has a slot at the end away from the counterweight seat 28. The damping plate 42 extends into the slot and the side of the damping plate 42 fits against the groove wall.

[0028] The implementation principle of this embodiment is as follows: The device has an automatic damping adjustment function, which can adjust the damping according to the flow speed of seawater. Specifically, when the seawater flow speed increases, according to the principle of fluid mechanics, the impact force of seawater on the base 1 and related structures increases. In order to effectively buffer this impact, the telescopic end of the hydraulic cylinder 43 extends and pushes the push block 44 downward. During the downward movement of the push block 44, it contacts the inclined surface of the fixed plate 421 and applies a force. From the perspective of force analysis, the force of the push block 44 on the inclined surface of the fixed plate 421 can be decomposed into components along the inclined surface and perpendicular to the inclined surface. The component perpendicular to the inclined surface causes the fixed plate 421 to drive the damping plate 42 to move outward along the opening 411, away from the center position of the fixed column 41. As the damping plate 42 moves outward, the normal pressure between it and the crossbar 281 increases. As the friction between the damping plate 42 and the crossbar 281 increases, the counterweight 28 must overcome this increased friction when it moves, thus experiencing greater resistance. This slows down the movement of the counterweight 28, consuming more energy from the seawater impact and improving the buffering effect. Conversely, when the seawater flow rate decreases, the impact force weakens, the telescopic end of the hydraulic cylinder 43 retracts, and the push block 44 moves upward. During the upward movement of the push block 44, the force on the inclined surface of the fixed plate 421 decreases, and the damping plate 42 moves towards the center of the fixed column 41 under its own weight or other restoring force. The normal pressure between the counterweight 42 and the crossbar 281 decreases, and the friction also decreases. The resistance experienced by the counterweight 28 when it moves decreases, and the movement speed increases relatively, so as to adapt to the smaller impact force of the seawater and avoid the structural response being slow due to excessive resistance.

[0029] It should be noted that, for the structure where the damping plate 42 slides within the opening of the fixed column and is interconnected internally and externally, dynamic sealing technology is employed to ensure that seawater does not enter the base. For example, a lip seal can be used. The lip seal has a unique lip structure, and after installation, its lip can fit tightly against the surface of the damping plate 42. When the damping plate 42 slides, the lip will elastically deform according to the pressure difference, always maintaining tight contact with the damping plate 42, thereby effectively preventing seawater from entering the base through the opening. Furthermore, the lip seal is made of a special rubber that is resistant to seawater corrosion, wear-resistant, and has good elasticity to adapt to the harsh environmental conditions of the deep sea. Additionally, a labyrinth seal can also be used in conjunction with this technology. The structure incorporates a series of tortuous channels at the interface between the opening and the damping plate 42. When seawater attempts to enter the base through these channels, the tortuous nature of the channels and the increased resistance prevent it from penetrating further, thus achieving a sealing effect. Furthermore, special greases with lubricating and sealing properties can be filled into the gaps of the labyrinth seal to further enhance the sealing effect. In addition, the structural design may include a dedicated sealing cavity at the opening, where the sliding contact portion of the damping plate 42 and the opening is placed. A sealing fluid is injected into the sealing cavity, and its pressure is used to balance the pressure of the external seawater. At the same time, the sealing fluid also serves as a lubricant and sealant, preventing seawater from entering the base.

[0030] The hydraulic cylinder 43 drives the push block 44 to move, thereby changing the normal pressure between the damping plate 42 and the crossbar 281, realizing the mechanism of dynamic adjustment of friction. The damping adjustment component can automatically adjust the resistance to the movement of the counterweight 28 according to the seawater flow rate, so that the entire buffer structure can maintain good buffering performance under different seawater conditions, effectively protecting the base 1 and related equipment from damage caused by seawater impact. It should be noted that the hydraulic cylinder 43 communicates with the seawater flow rate through flow rate detection and feedback from the hydraulic control system. A flow rate sensor is installed on the base 1, which uses principles such as thermal film and turbine to convert the seawater flow rate into an electrical signal and transmit it to the controller. The controller has a built-in preset flow rate-hydraulic control algorithm. When the seawater flow rate increases, the sensor signal is analyzed, and the controller sends a command to the solenoid directional valve to extend the telescopic end of the hydraulic cylinder 43. When the seawater flow rate decreases, the controller sends a reverse command to retract the telescopic end of the hydraulic cylinder 43. At the same time, the relief valve in the hydraulic system is set to a maximum pressure to prevent component damage, and the throttle valve adjusts the hydraulic oil flow rate to control the telescopic end. The movement speed is designed to ensure smooth and precise extension and contraction in response to changes in seawater flow velocity. Specifically, a segmented control logic can be used to control the flow velocity and hydraulic pressure. When the seawater flow velocity is within a certain range, such as V1-V2, the hydraulic cylinder extends by L1. At this time, the friction between the damping plate and the crossbar effectively buffers the movement of the counterweight, dissipating the energy of the seawater impact and achieving a good vibration reduction effect. When the seawater flow velocity is greater than V2, the hydraulic cylinder does not extend indefinitely but maintains the maximum safe extension Lmax. This design prevents the damping plate and crossbar from collapsing due to excessive extension of the hydraulic cylinder. Excessive friction can cause the counterweight to "lock up." Simultaneously, the maximum thrust of the hydraulic cylinder (or the maximum extension of the friction plate) is strictly limited mechanically or programmatically. Mechanically, a limiting device is incorporated into the hydraulic cylinder's structural design. When the cylinder's extension reaches its maximum extension, the limiting device prevents further extension, thus ensuring the damping plate does not move excessively outward. Programmatically, the controller's built-in flow-hydraulic control algorithm sets a maximum thrust threshold. When the required thrust calculated based on the flow rate reaches this threshold, the controller stops sending commands to the solenoid directional valve to allow the hydraulic cylinder to continue extending, ensuring that the thrust remains constant regardless of seawater flow. Regardless of speed variations, the maximum frictional force under extreme sea conditions remains less than the fracture threshold when the counterweight is lifted. Thus, even in extremely harsh sea conditions, the entire vibration damping system can still function normally, effectively buffering the impact of seawater while avoiding the direct rigid transfer of wave impact force to the base. This ensures the safe and stable operation of the deep-sea floating energy island and related equipment. Through this design, the flow velocity-hydraulic control algorithm can operate reasonably and reliably under various working conditions, enabling the damping adjustment component to automatically adjust the resistance to the movement of the counterweight according to the seawater flow velocity, so that the entire buffer structure can maintain good buffering performance under different seawater conditions.

[0031] Example 4 Based on Example 3, this example discloses a multi-stage damping vibration reduction system for a deep-sea floating energy island, such as... Figure 1As shown, a gathering assembly is provided on the base 1 for gathering several first buffer plates 23. The gathering assembly includes a gear ring 51 and a motor 53. The gear ring 51 is rotatably mounted on the base 1, and the motor 53 is installed inside the base 1. The output shaft of the motor 53 is fixed with a gear 54, and the gear 54 meshes with the gear ring 51. Several third pull ropes 52 are connected to the gear ring 51, and the ends of the several third pull ropes 52 away from the gear ring 51 are respectively connected to several first buffer plates 23. The implementation principle of this embodiment is as follows: When the deep-sea floating energy island needs to be adjusted in position and the base 1 is ready to move, the motor 53 starts, and the output shaft drives the gear 54 to rotate. According to the transmission principle of the gear 54, the gear 54 meshes with the gear ring 51, and the rotational motion of the gear 54 is converted into the rotation of the gear ring 51. During the rotation of the gear ring 51, a pulling force is applied to the third pull rope 52. This pulling force is transmitted to the first buffer plate 23. Under the tension of the third pull rope 52, the first buffer plate 23 is subjected to a resultant force pointing towards the base 1. Under the action of this resultant force, the first buffer plate 23 gradually approaches the base 1 until it is in contact with it. At this time, the contact area between the first buffer plate 23 and the seawater is greatly reduced. According to the fluid resistance formula, the resistance of an object in a fluid is related to factors such as the contact area. As the contact area decreases, the resistance of the seawater to the first buffer plate 23 is significantly reduced, thereby reducing the overall resistance experienced by the base 1 when it moves, making it easier for the base 1 to move smoothly in the seawater.

[0032] It should be noted that both gear 54 and gear ring 51 have undergone corrosion-resistant treatment, enabling them to rotate stably in marine environments. In addition, motor 53 uses a servo motor with a holding brake to prevent loss of tension due to power failure.

[0033] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A multi-stage damping vibration reduction system for a deep-sea floating energy island, comprising a base (1), characterized in that, A top plate (11) is fixed on the base (1), and a buffer assembly is provided on the base (1). The buffer assembly includes several primary buffer structures, and the several primary buffer structures are arranged in a circumferential array around the base (1). Each of the primary buffer structures includes a first buffer plate (23), two first slide rods (21) and a second slide rod (27). The two first slide rods (21) are fixed to the side of the base (1). A slide plate (22) is slidably sleeved on the two first slide rods (21). The first buffer plate (23) is fixed to the side of the slide plate (22). The second slide rod (27) is fixed to the bottom surface of the base (1). A counterweight seat (28) is slidably sleeved on the second slide rod (27). The primary buffer structure also includes an installation rod (25) and a pulley (26). The installation rod (25) is fixed to the side of the base (1). The pulley (26) is fixed to the end of the installation rod (25) away from the base (1). The first buffer plate (23) and the counterweight seat (28) are connected by a first pull rope (29). The first pull rope (29) passes around the pulley (26).

2. The deep-sea floating energy island multi-stage damping vibration reduction system according to claim 1, characterized in that, Each of the first buffer plates (23) has a guide plate (24) fixed on its side, and each guide plate (24) has two symmetrical inclined surfaces.

3. The deep-sea floating energy island multi-stage damping vibration reduction system according to claim 1, characterized in that, The back of the first buffer plate (23) is provided with a slot for the sliding plate (22), and the sliding plate (22) is embedded in the slot so that the side of the first buffer plate (23) is flush with the side of the sliding plate (22).

4. The deep-sea floating energy island multi-stage damping vibration reduction system according to claim 1, characterized in that, Each of the second slide rods (27) is provided with a secondary buffer structure, which includes a counterweight slide sleeve (31), two first connecting plates (34), two second connecting plates (35), and a third slide rod (32). The counterweight slide sleeve (31) is slidably sleeved on the second slide rod (27). The two first connecting plates (34) are rotatably mounted on the counterweight slide sleeve (31), and the two second connecting plates (35) are rotatably mounted on the top of the second slide rod (27). The two first connecting plates (34) are rotatably connected to the two second connecting plates (35) respectively. The third slide rod (32) is fixed to the second slide rod (27). On the slide rod (27), and the third slide rod (32) is perpendicular to the second slide rod (27), the third slide rod (32) is slidably fitted with a second buffer plate (33), and the side of the second buffer plate (33) is fixed with a fixing block (331), the fixing block (331) is directly opposite to the hinge position of the first connecting plate (34) and the second connecting plate (35), the fixing block (331) and the counterweight slide sleeve (31) are connected by a second pull rope (37), and two limiting rods (36) are fixed on the second slide rod (27), and the two limiting rods (36) are respectively set directly opposite the two second connecting plates (35).

5. The deep-sea floating energy island multi-stage damping vibration reduction system according to claim 4, characterized in that, The inner ring of the counterweight sleeve (31) is in contact with the outer surface of the second slide rod (27).

6. The deep-sea floating energy island multi-stage damping vibration reduction system according to claim 4, characterized in that, The outer surface of the third slide bar (32) is fixed with a protrusion (321) along the axial direction. The inner wall of the central sleeve surface of the second buffer plate (33) is provided with a groove that cooperates with the protrusion (321) to restrict the second buffer plate (33) from rotating circumferentially.

7. The deep-sea floating energy island multi-stage damping vibration reduction system according to claim 1, characterized in that, Each of the counterweights (28) is fixed with a crossbar (281), and the base (1) is provided with a damping adjustment component; The damping adjustment assembly includes a fixed column (41) and a hydraulic cylinder (43). The fixed column (41) is fixed to the bottom surface of the base (1). The fixed column (41) is hollow inside and has several openings (411) on its circumference. Each opening (411) communicates with the interior of the fixed column (41). A damping plate (42) is slidably disposed in each opening (411). A fixing plate (421) is fixed to the side of each damping plate (42). Each plate (421) is provided with an inclined surface. Several fixed plates (421) are located inside the fixed column (41). The hydraulic cylinder (43) is installed inside the base (1). The telescopic end of the hydraulic cylinder (43) extends into the interior of the fixed column (41) and is fixed with a push block (44). The push block (44) is set facing the inclined surface of several fixed plates (421). Several damping plates (42) are arranged in a circumferential array. Several crossbars (281) are in contact with several damping plates (42).

8. The deep-sea floating energy island multi-stage damping vibration reduction system according to claim 7, characterized in that, Each of the crossbars (281) has a slot at the end away from the counterweight (28), and the damping plate (42) extends into the slot, with the side of the damping plate (42) fitting against the groove wall.

9. A multi-stage damping vibration reduction system for a deep-sea floating energy island according to claim 8, characterized in that, Several of the aforementioned counterweights (28) are arranged in a circumferential array around the fixed column (41).

10. A multi-stage damping vibration reduction system for a deep-sea floating energy island according to claim 1, characterized in that, The base (1) is provided with a gathering assembly for gathering a number of first buffer plates (23). The gathering assembly includes a gear ring (51) and a motor (53). The gear ring (51) is rotatably mounted on the base (1). The motor (53) is installed inside the base (1). The output shaft of the motor (53) is fixed with a gear (54), and the gear (54) meshes with the gear ring (51). A number of third pull ropes (52) are connected to the gear ring (51). The ends of the third pull ropes (52) away from the gear ring (51) are respectively connected to a number of first buffer plates (23).

Images