Underwater mooring cable-carried vortex-induced oscillation power generation mobile buoyancy block

Abstract

The invention discloses an underwater mooring cable-loaded vortex-induced oscillation power generation mobile buoyancy block. Belongs to the field of marine mooring cables and comprises a movable adjusting floating block which moves on an anchor chain to adjust the stress of a mooring system of an offshore floating platform. The device is mainly composed of a floating block floater, a vortex-induced oscillation power generation connecting rod and a floating block moving base. The movable buoyancy block is designed, so that the adaptive capacity of the offshore platform mooring system can be improved, and the complex marine environment working condition can be resisted; by integrating an ocean current energy power generation structure, clean energy is provided for the system, energy supply of the movable adjusting floating block is guaranteed, and environmental friendliness is achieved; and by utilizing an intelligent control means, the movement of the movable adjusting floating block is automatically controlled, so that the movable adjusting floating block has good engineering application adaptability.

Description

Technical Field

[0001] The invention belongs to the field of marine mooring cables and relates to a vortex-induced oscillation power generation mobile buoyancy block carried by an underwater mooring cable. Background Art

[0002] With the continuous advancement of marine development, offshore floating platforms, as important tools for the exploitation of marine resources, are facing increasingly severe environmental challenges. The marine environment is complex and changeable, and natural factors such as ocean currents, wind, and waves have a huge impact on the stability of the platform. Traditional mooring systems mainly rely on the fixing method of anchor piles and anchor chains to maintain the stability of the platform, but in complex marine environments, these traditional systems are often difficult to adapt to various extreme working conditions, which can easily cause uneven force on the mooring system and even cause accidents such as platform instability or anchor chain breakage. Therefore, how to improve the adaptability and stability of marine platform mooring systems through innovative technologies is a technical problem that needs to be solved urgently in the current marine engineering field.

[0003] Existing mooring systems usually rely on the length and tension of the anchor chain to control the position and stability of the platform. However, such systems cannot flexibly adjust their mooring methods when dealing with strong currents and waves, causing the system to be overstressed and easily damaged or fail. In order to enhance the adaptability of the system, some intelligent adjustable mooring systems have begun to be applied to the design of offshore platforms, aiming to optimize the stability of the platform by real-time monitoring of sea conditions and adjusting mooring parameters. However, these technologies still face the problems of insufficient energy supply and insufficient intelligent control methods, especially in remote areas such as deep sea, where traditional energy supply can hardly guarantee the continuous operation of the system. Summary of the invention

[0004] In view of the above problems, the present invention aims to propose a mobile buoyancy block for generating electricity by vortex-induced oscillation carried by an underwater mooring cable.

[0005] The technical solution of the present invention is: the underwater mooring cable-borne vortex-induced oscillation power generation mobile buoyancy block of the present invention comprises a floating platform, anchor chains are respectively connected to both ends of the floating platform, and anchor piles installed on the seabed are respectively connected to the other ends of the anchor chains;

[0006] Movable and adjustable floating blocks are installed on the anchor chains on both sides. The movable and adjustable floating blocks include a floating block movable base connected to the anchor chain, a vortex-induced oscillation power generation connecting rod is installed on the upper end of the floating block movable base, and a floating block float is installed on the upper end of the vortex-induced oscillation power generation connecting rod, and the floating block float is connected to the floating block movable base through the vortex-induced oscillation power generation connecting rod.

[0007] Furthermore, the buoyancy block float comprises a buoy platform, a wireless signal transmission module is fixedly mounted on the buoy platform, and a single chip microcomputer is mounted inside the buoy platform.

[0008] Furthermore, both the floating block float and the float platform are made of high-strength buoyancy materials.

[0009] Furthermore, the vortex-induced oscillation power generation connecting rod includes a rotor sleeve, inside which a stator connecting rod and a buffer spring are arranged. The rotor sleeve is elastically connected to the stator connecting rod through the buffer spring.

[0010] Both ends of the stator connecting rod are respectively connected to the floating block float and the floating block moving base.

[0011] An upper stopper and a lower stopper are respectively arranged at the upper and lower ends of the stator connecting rod. The upper stopper and the lower stopper are connected to the upper and lower ends of the stator connecting rod through a connection structure.

[0012] Furthermore, the upper stopper, the lower stopper, the stator connecting rod and the connection structure are composed of a stopper block, a sliding gear, a connecting bearing, a rack slide rail, a control motor, a spiral slide rail, an oscillation detector and a flow velocity meter.

[0013] One side of the stopper block is connected to the rack slide rail through a sliding gear and a connecting bearing.

[0014] The control motor is arranged on the stator connecting rod and connected to the spiral slide rail. The spiral slider penetrates through the stopper block and is connected through a spiral chute.

[0015] The oscillation detector is fixedly arranged on the stopper block.

[0016] The flow velocity meter is fixedly arranged at the end of the stator connecting rod.

[0017] Furthermore, the control motor, the oscillation detector and the flow velocity meter are all connected to the single-chip microcomputer.

[0018] Furthermore, the automatic control process steps of the upper stopper, the lower stopper, the stator connecting rod and the connection structure are as follows:

[0019] (1): The upper stopper and the lower stopper are not at the upper and lower ends of the rack slide rail, and the vortex-induced oscillation power generation connecting rod works normally.

[0020] (2): The single-chip microcomputer judges whether the moving adjustment floating block is in the moving condition.

[0021] (2.1): When the moving adjustment floating block is in the moving condition, both the oscillation detector and the flow velocity meter are turned off. The upper control motor rotates to control the upper stopper to slide down a distance H; the lower control motor rotates to control the lower stopper to slide up a distance H; H is the distance between the end of the rack slide rail and the end of the rotor sleeve, and the specific size depends on the specification of the moving adjustment floating block.

[0022] (2.2): When the moving adjustment floating block is not in the moving working condition, proceed to step (3);

[0023] (3): The oscillation detector is turned on to detect the oscillation amplitude A and frequency f of the oscillation outer cylinder rotor, and the vibration information is transmitted to the single-chip microcomputer in real time; the flowmeter is turned off;

[0024] (4): The single-chip microcomputer determines whether there is A≥A1 or f≥f1; where A1 and f1 are the dangerous amplitude and dangerous frequency of the rotor sleeve respectively, and the actual sizes depend on the actual working conditions;

[0025] (4.1): When A≥A1 or f≥f1, proceed to step (5);

[0026] (4.2): When there is no A≥A1 or f≥f1, proceed to step (3) and continue to loop;

[0027] (5): The oscillation detector is turned off, and the control motor on the upper side rotates to control the upper stopper to slide down a distance H; the control motor on the lower side rotates to control the lower stopper to slide up a distance H;

[0028] (6): The flowmeter is started to monitor the flow velocity v, and the flow velocity information is transmitted to the single-chip microcomputer in real time;

[0029] (7): The single-chip microcomputer determines whether there is v<v1;

[0030] (7.1): When v<v1, proceed to step (8);

[0031] (7.2): When there is no v<v1, proceed to step (6) and continue to loop;

[0032] (8): The control motor on the upper side rotates to control the upper stopper to slide up a distance H; the control motor on the lower side rotates to control the lower stopper to slide down a distance H; at the same time, the flowmeter is turned off and the oscillation detector is turned on.

[0033] Furthermore, the floating block moving base includes a base housing made of high-strength corrosion-resistant material, and an anchor chain passes through the middle position thereof;

[0034] Two first thrusters and a second thruster are symmetrically arranged at the tail of the base housing;

[0035] A storage battery is arranged on one side inside the base housing;

[0036] An upper chain gripper and a lower chain gripper are respectively fixed on both sides of the anchor chain inside the base housing.

[0037] Furthermore, the upper chain gripper and the lower chain gripper have similar compositions; specifically including a control gear, a motion control motor, a rack track and a chain clamp;

[0038] The motion control motor is fixedly installed inside the base housing and is fixedly riveted to the control gear. The control gear is connected to the rack track through gear meshing.

[0039] The chain clamp is of a conical structure and is fixedly welded to the end of the rack track. By inserting or pulling out the anchor chain hole of the anchor chain, the clamping and releasing of the chain are realized.

[0040] Further, the steps of the automatic control process for clamping and releasing the chain are as follows:

[0041] (1): The control gears of the upper chain clamp and the lower chain clamp are respectively at the upper and lower ends of the rack track. The chain clamps are both inserted into the chain holes of the anchor chain. The floating block moving base is fixed on the anchor chain, and the first thruster and the second thruster do not work.

[0042] (2): The single-chip microcomputer judges whether the moving and adjusting floating block is in the moving condition.

[0043] (2.1): When the moving and adjusting floating block is in the moving condition, go to step (3).

[0044] (2.2): When the moving and adjusting floating block is not in the moving condition, go to step (1) and continue to loop.

[0045] (3): The motion control motors of the upper chain clamp and the lower chain clamp rotate counterclockwise and clockwise by an angle a respectively. Driven by the control gears, the rack tracks move upward and downward respectively, so that the chain clamps leave the anchor chain.

[0046] Among them, the angle a corresponds to the moving distance when the chain clamp is completely inserted into the anchor chain hole, which depends on the specific specifications.

[0047] (4): Control the first thruster and the second thruster to work.

[0048] (5): The single-chip microcomputer judges whether the moving and adjusting floating block reaches the target position.

[0049] (5.1): When the moving and adjusting floating block reaches the target position, go to step (6).

[0050] (5.2): When the moving and adjusting floating block does not reach the target position, go to step (4) and continue to loop.

[0051] (6): The first thruster and the second thruster stop working.

[0052] (7): The motion control motors of the upper chain clamp and the lower chain clamp rotate clockwise and counterclockwise by an angle a respectively. Driven by the control gears, the rack tracks move downward and upward respectively, so that the chain clamps are both inserted into the chain holes of the anchor chain, and the floating block moving base is fixed on the anchor chain.

[0053] Basic principles of the present invention: 1. Based on the buoyancy principle and the force characteristics of the mooring system of an offshore platform, a movable buoyancy block is designed to adjust the force on the mooring system to adapt to different working conditions; 2. Based on the principle of vortex-induced oscillation, a sea current energy generation structure is designed to provide clean energy for the system; 3. Through the principle of automation, the self-adaptive adjustment of the equipment under different working conditions is realized.

[0054] The beneficial effects of the present invention are as follows: 1. By designing a movable buoyancy block, the present invention can improve the adaptability of the mooring system of an offshore platform to resist complex marine environmental working conditions; 2. By integrating a sea current energy generation structure, the present invention provides clean energy for the system, ensures the energy supply of the movable adjustment floating block, and has environmental protection; 3. Through intelligent control means, the present invention realizes the automatic control of the movement of the movable adjustment floating block, making its engineering application better adaptable. Brief Description of the Drawings

[0055] Figure 1 It is a schematic diagram of the overall structural composition of the system of the present invention;

[0056] Figure 2 It is a schematic diagram of the structure of the movable adjustment floating block of the present invention;

[0057] Figure 3 It is a schematic diagram of the structure of the vortex-induced oscillation power generation connecting rod of the present invention;

[0058] Figure 4 It is a self-operating flow chart of the vortex-induced oscillation power generation connecting rod of the present invention;

[0059] Figure 5 It is a schematic diagram of the structure of the floating block moving base of the present invention;

[0060] Figure 6 It is a working flow chart of the floating block moving base of the present invention;

[0061] In the figure: 1 is the movable adjustment floating block, 11 is the floating block float, 12 is the vortex-induced oscillation power generation connecting rod, and 13 is the floating block moving base;

[0062] 111 is the float platform, 112 is the wireless signal transmission module, and 113 is the single-chip microcomputer;

[0063] 121 is the stator connecting rod, 122 is the rotor sleeve, 123 is the buffer spring, 124 is the upper stopper, and 125 is the lower stopper;

[0064] 131 is the base housing, 132 is the first thruster, 133 is the second thruster, 134 is the storage battery, 135 is the upper chain gripper, and 136 is the lower chain gripper;

[0065] 20 is a stopper, 21 is a sliding gear, 22 is a connecting bearing, 23 is a rack slide rail, 24 is a control motor, 25 is a spiral slide rail, 26 is an oscillation detector, and 27 is a flow meter;

[0066] 30 is a control gear, 31 is a motion control motor, 32 is a rack track, and 33 is a chain clip. DETAILED DESCRIPTION

[0067] The specific technical scheme of the present invention is further described in detail below with reference to specific examples.

[0068] As shown in the figure, the underwater mooring cable-borne vortex-induced oscillation power generation mobile buoyancy block of the present invention comprises a mobile adjustment buoy 1, which adjusts the force of the mooring system of the offshore floating platform by moving on the anchor chain;

[0069] The mobile regulating buoy 1 is mainly composed of a buoy 11, a vortex-induced oscillation power generation connecting rod 12 and a buoy mobile base 13. The buoy 11 is made of high-strength buoyancy material to provide buoyancy and lift the anchor chain during the adjustment of the mooring system to change the stress of the mooring system. The buoy 11 is connected to the buoy mobile base 13 through the vortex-induced oscillation power generation connecting rod 12. The vortex-induced oscillation power generation connecting rod 12 plays an important role in connection on the one hand, and on the other hand, it captures the ocean current energy through vortex-induced oscillation to provide electrical energy for the mobile regulating buoy 1.

[0070] The floating block moving base 13 has the functions of holding the anchor chain tightly and moving and pushing the movable and adjusting floating block 1, and is connected through the anchor chain.

[0071] Furthermore, the floating block float 11 mainly comprises a floating platform 111, a wireless signal transmission module 112 and a single chip computer 113; wherein the floating platform 111 is made of a high-strength buoyancy material, provides buoyancy for the platform, and provides installation space for components on the floating block float 11;

[0072] The wireless signal transmission module 112 is fixedly mounted on the floating platform 111, and cooperates with the signal receiving module on the floating platform to perform real-time underwater and surface information interaction;

[0073] The single chip microcomputer 113 is installed inside the floating platform 111 to receive and process the signals transmitted by the wireless signal transmission module 112 and other underwater components, perform processing, and issue corresponding control instructions.

[0074] Further, the vortex-induced oscillation power generation connecting rod 12 is mainly composed of a stator connecting rod 121, a rotor sleeve 122, a buffer spring 123, an upper stopper 124 and a lower stopper 125; among them, the stator connecting rod 121 serves as the generator stator and also plays the role of connecting the floating block float 11 and the floating block moving base 13;

[0075] The rotor sleeve 122 is elastically connected to the stator connecting rod 121 through the buffer spring 123. Under the action of the ocean current, vortex shedding is generated outside the rotor sleeve 122, thereby inducing vortex-induced oscillation and shaking to capture the ocean current energy, and generating electric energy by cutting the magnetic induction line in cooperation with the stator connecting rod 121;

[0076] The upper stopper 124 and the lower stopper 125 are respectively arranged at the upper and lower ends of the stator connecting rod 121 to suppress the movement of the rotor sleeve 122 under extreme working conditions or moving conditions, thereby ensuring the service life of the vortex-induced oscillation power generation connecting rod 12;

[0077] Among them, the composition of the upper stopper 124, the lower stopper 125, the stator connecting rod 121 and the connection structure mainly includes a stopper block 20, a sliding gear 21, a connecting bearing 22, a rack slide rail 23, a control motor 24, a spiral slide rail 25, an oscillation detector 26 and a flow velocity meter 27;

[0078] The stopper block 20 is connected to the rack slide rail 23 through the sliding gear 21 and the connecting bearing 22 to ensure that the stopper block 20 can slide stably along the rack slide rail 23;

[0079] The control motor 24 is arranged on the stator connecting rod 121 and connected to the spiral slide rail 25. The spiral slider 25 penetrates through the stopper block 20 and is connected through a spiral chute. When the control motor 24 rotates, the stopper block 20 can move up and down stably along the spiral slide rail 25 and the rack slide rail 23;

[0080] The oscillation detector 26 is fixedly arranged on the stopper block 20, the flow velocity meter 27 is fixedly arranged at the end of the stator connecting rod 121, and the control motor 24, the oscillation detector 26 and the flow velocity meter 27 are all connected to the single-chip microcomputer 113. Its automatic control process includes the following steps:

[0081] 1. The upper stopper 124 and the lower stopper 125 are not at the upper and lower ends of the rack slide rail, and the vortex-induced oscillation power generation connecting rod 12 works normally;

[0082] 2. The single-chip microcomputer 113 judges whether the moving adjustment floating block 1 is in the moving condition;

[0083] 2.1. When the moving adjustment float 1 is in the moving condition, the oscillation detector 26 and the flowmeter 27 are both closed. The control motor 24 on the upper side rotates to control the upper stopper 124 to slide downward by a distance H; the control motor 24 on the lower side rotates to control the lower stopper 125 to slide upward by a distance H; H is the distance between the end of the rack slide rail 23 and the end of the mover sleeve 122, and the specific size depends on the specification of the moving adjustment float.

[0084] 2.2. When the moving adjustment float 1 is not in the moving condition, go to step 3.

[0085] 3. The oscillation detector 26 is turned on to detect the oscillation amplitude A and frequency f of the oscillation outer cylinder mover, and the vibration information is transmitted to the single-chip microcomputer 113 in real time; the flowmeter is closed.

[0086] 4. The single-chip microcomputer 113 determines whether A≥A1 or f≥f1; where A1 and f1 are the dangerous amplitude and dangerous frequency of the mover sleeve 122 respectively, and the actual size depends on the actual working condition.

[0087] 4.1. When A≥A1 or f≥f1, go to step 5.

[0088] 4.2. When there is no A≥A1 or f≥f1, go to step 3 and continue to loop.

[0089] 5. The oscillation detector 26 is closed. The control motor 24 on the upper side rotates to control the upper stopper 124 to slide downward by a distance H; the control motor 24 on the lower side rotates to control the lower stopper 125 to slide upward by a distance H.

[0090] 6. The flowmeter 27 is started to monitor the flow velocity v, and the flow velocity information is transmitted to the single-chip microcomputer 113 in real time.

[0091] 7. The single-chip microcomputer 113 determines whether v<v1.

[0092] 7.1. When v<v1, go to step 8.

[0093] 7.2. When there is no v<v1, go to step 6 and continue to loop.

[0094] 8. The control motor 24 on the upper side rotates to control the upper stopper 124 to slide upward by a distance H; the control motor 24 on the lower side rotates to control the lower stopper 125 to slide downward by a distance H; at the same time, the flowmeter 27 is closed and the oscillation detector 26 is opened.

[0095] Furthermore, the float moving base 13 includes a base housing 131, a first thruster 132, a second thruster 133, a storage battery 134, an upper chain gripper 135 and a lower chain gripper 136; wherein, the base housing 131 is made of high-strength corrosion-resistant material, and the middle part is penetrated by an anchor chain, and at the same time provides an installation space for the components of the float moving base 13.

[0096] The first propeller 132 and the second propeller 133 are symmetrically arranged at the tail of the base housing 131 to provide power for the movement of the movable regulating float 1, and can also regulate the direction of movement through differential propulsion;

[0097] The storage battery 134 is used to store the electric energy generated by the vortex-induced oscillation power generation connecting rod 12, and at the same time provide electric energy for the electric components of the mobile regulating floating block 1;

[0098] The upper chain gripper 135 and the lower chain gripper 136 are fixedly installed and distributed on both sides of the anchor chain to grip or release the anchor chain to cope with corresponding working conditions;

[0099] The upper chain holder 135 and the lower chain holder 136 have similar components, mainly including a control gear 30, a motion control motor 31, a rack track 32 and a chain clamp 33;

[0100] The control gear 30 is fixedly riveted to the motion control motor 31 and meshed with the rack track 32. The motion control motor 31 is fixedly installed inside the base housing 131 and drives the control gear 30 to rotate by rotating, thereby driving the rack track 32 to move up and down.

[0101] The chain clip 33 is a conical structure, but is not limited thereto, and can be adaptively adjusted according to the mooring system form in actual engineering. The chain clip 33 is fixedly welded to the end of the rack track 32, and the chain can be tightened and released by inserting or pulling out the anchor chain hole;

[0102] Furthermore, the automatic control process of holding the chain and releasing it includes the following steps:

[0103] 1. The control gears 30 of the upper chain holder 135 and the lower chain holder 136 are respectively located at the upper and lower ends of the rack track 32, the chain clips 33 are all inserted into the chain holes of the anchor chain, the floating block moving base 13 is fixed on the anchor chain, and the first propeller 132 and the second propeller 133 do not work;

[0104] 2. The single chip computer 113 determines whether the mobile regulating float 1 is in a moving condition;

[0105] 2.1. When the movable adjustment float 1 is in the moving state, proceed to step 3;

[0106] 2.2. When the movable adjustment float 1 is not in the moving condition, enter step 1 and continue the cycle;

[0107] 3. The motion control motors 31 of the upper chain gripper 135 and the lower chain gripper 136 rotate counterclockwise and clockwise by an angle a respectively. Driven by the control gear 30, the controlled rack tracks 32 move upward and downward respectively, causing the chain clip 33 to leave the anchor chain. The angle a corresponds to the moving distance when the chain clip 33 is fully inserted into the anchor chain hole, which depends on the specific specifications.

[0108] 4. Control the operation of the first thruster 132 and the second thruster 133.

[0109] 5. The single-chip microcomputer 113 determines whether the moving and adjusting floating block 1 reaches the target position.

[0110] 5.1 When the moving and adjusting floating block 1 reaches the target position, proceed to step 6.

[0111] 5.2 When the moving and adjusting floating block 1 does not reach the target position, proceed to step 4 and continue to loop.

[0112] 6. The first thruster 132 and the second thruster 133 stop working.

[0113] 7. The motion control motors 31 of the upper chain gripper 135 and the lower chain gripper 136 rotate clockwise and counterclockwise by an angle a respectively. Driven by the control gear 30, the controlled rack tracks 32 move downward and upward respectively, causing the chain clips 33 to be inserted into the anchor chain holes, and the floating block moving base 13 is fixed on the anchor chain.

[0114] In the present invention, ocean current energy is a renewable energy source with a relatively high energy density, especially suitable for deep - sea areas. Using ocean current energy to generate electricity to provide energy for the mooring system of an offshore platform can not only reduce the dependence on traditional energy sources but also reduce the negative impact on the environment. In addition, the development of intelligent control technology enables the offshore platform to adjust its mooring system more precisely, improving the adaptability and stability of the platform in complex sea conditions.

[0115] The core component of the present invention is the moving and adjusting floating block 1. By moving on the anchor chain, it can effectively adjust the force on the mooring system of the offshore floating platform, thereby optimizing the stability of the platform in various ocean environments. The moving and adjusting floating block 1 integrates a vortex - induced vibration power generation structure, which can convert ocean current energy into electrical energy to provide sustainable clean energy for the system and ensure the energy supply of the floating block. In addition, through intelligent control means to automatically adjust the movement of the floating block, the system can flexibly respond to different sea conditions, further enhancing the adaptability and engineering applicability of the system.

[0116] The disclosed underwater mooring cable - borne vortex - induced vibration power generation moving buoyancy block technology of the present invention not only effectively improves the stability and adaptability of the mooring system of the offshore platform but also realizes the green and sustainable supply of energy, which is of great significance for promoting the intelligent and green development of offshore platforms.

Claims

1. An underwater mooring cable-borne vortex-induced oscillation power generation mobile buoyancy block, characterized in that, It includes a floating platform, with anchor chains respectively connected to both ends of the floating platform, and anchor piles installed on the seabed respectively connected to the other ends of the anchor chains; On both sides of the anchor chains, movable adjustment floating blocks (1) are installed. The movable adjustment floating block (1) includes a floating block moving base (13) connected to the anchor chain. At the upper end of the floating block moving base (13), a vortex-induced oscillation power generation connecting rod (12) is installed. At the upper end of the vortex-induced oscillation power generation connecting rod (12), a floating block float (11) is installed. The floating block float (11) is connected to the floating block moving base (13) through the vortex-induced oscillation power generation connecting rod (12).

2. The mobile buoyancy block for underwater mooring cable-borne VIV power generation according to claim 1, wherein The floating block float (11) includes a float platform (111). On the float platform (111), a wireless signal transmission module (112) is fixedly installed, and a single-chip microcomputer (113) is installed inside the float platform (111).

3. The mobile buoyancy block for underwater mooring cable-borne VIV power generation according to claim 2, characterized in that, Both the floating block float (11) and the float platform (111) are made of high-strength buoyancy materials.

4. An underwater mooring cable-borne vortex-induced oscillation power generation mobile buoyancy block according to claim 1, characterized in that, The vortex-induced oscillation power generation connecting rod (12) includes a rotor sleeve (122). Inside the rotor sleeve (122), a stator connecting rod (121) and a buffer spring (123) are installed. The rotor sleeve (122) is elastically connected to the stator connecting rod (121) through the buffer spring (123). Both ends of the stator connecting rod (121) are respectively connected to the floating block float (11) and the floating block moving base (13); An upper stopper (124) and a lower stopper (125) are respectively installed at the upper and lower ends of the stator connecting rod (121). The upper stopper (124) and the lower stopper (125) are connected to the upper and lower ends of the stator connecting rod (121) through a connection structure.

5. An underwater mooring cable-borne VIV power generation movable buoyancy block according to claim 4, characterized in that, The composition of the upper stopper (124), the lower stopper (125), the stator connecting rod (121) and the connection structure includes a stopper block (20), a sliding gear (21), a connecting bearing (22), a rack slide rail (23), a control motor (24), a spiral slide rail (25), an oscillation detector (26) and a flow velocity meter (27); One side of the stopper block (20) is connected to the rack slide rail (23) through the sliding gear (21) and the connecting bearing (22); The control motor (24) is installed on the stator connecting rod (121) and connected to the spiral slide rail (25). The spiral slider (25) penetrates through the stopper block (20) and is connected through a spiral chute; The oscillation detector (26) is fixedly installed on the stopper block (20); The flow velocity meter (27) is fixedly installed at the end of the stator connecting rod (121).

6. The mobile buoyancy block for underwater mooring cable-borne vortex-induced oscillation power generation according to claim 2 or 5, characterized in that The control motor (24), the oscillation detector (26), and the flow velocity meter (27) are all connected to the single-chip microcomputer (113).

7. An underwater mooring cable-borne vortex-induced oscillation power generation mobile buoyancy block according to claim 5, characterized in that, The automatic control process steps of the upper stopper (124), the lower stopper (125), the stator connecting rod (121) and the connection structure are as follows: (1): The upper stopper (124) and the lower stopper (125) are not at the upper and lower ends of the rack slide rail (23), and the vortex-induced oscillation power generation connecting rod (12) works normally; (2): The single-chip microcomputer (113) judges whether the movable adjustment floating block (1) is in a moving working condition; (2.1): When the moving adjustment float block (1) is in the moving condition, the oscillation detector (26) and the flow meter (27) are both closed. The upper control motor (24) rotates to control the upper stopper (124) to slide downward by a distance H; the lower control motor (24) rotates to control the lower stopper (125) to slide upward by a distance H; H is the distance between the end of the rack slide rail (23) and the end of the mover sleeve (122), and the specific size depends on the specification of the moving adjustment float block (1); (2.2): When the moving adjustment float block (1) is not in the moving condition, go to step (3); (3): The oscillation detector (26) is turned on to detect the oscillation amplitude A and frequency f of the oscillation outer cylinder mover, and the vibration information is transmitted to the single-chip microcomputer (113) in real time; the flow meter (27) is closed; (4): The single-chip microcomputer (113) determines whether there is A≥A1 or f≥f1; where A1 and f1 are the dangerous amplitude and dangerous frequency of the mover sleeve (122) respectively, and the actual size depends on the actual working condition; (4.1): When A≥A1 or f≥f1, go to step (5); (4.2): When there is no A≥A1 or f≥f1, go to step (3) and continue to loop; (5): The oscillation detector (26) is closed. The upper control motor (24) rotates to control the upper stopper (124) to slide downward by a distance H; the lower control motor (24) rotates to control the lower stopper (125) to slide upward by a distance H; (6): The flow meter (27) is started to monitor the flow velocity v, and the flow velocity information is transmitted to the single-chip microcomputer (113) in real time; (7): The single-chip microcomputer (113) determines whether there is v<v1; (7.1): When v<v1, go to step (8); (7.2): When there is no v<v1, go to step (6) and continue to loop; (8): The upper control motor (24) rotates to control the upper stopper (124) to slide upward by a distance H; the lower control motor (24) rotates to control the lower stopper (125) to slide downward by a distance H; at the same time, the flow meter (27) is closed and the oscillation detector (26) is turned on.

8. An underwater mooring cable-borne vortex-induced oscillation power generation mobile buoyancy block according to claim 1, characterized in that, The float moving base (13) includes a base shell (131) made of high-strength corrosion-resistant material, and an anchor chain passes through the middle position thereof; Two first thrusters (132) and a second thruster (133) are symmetrically arranged at the tail of the base shell (131); A storage battery (134) is arranged on one side inside the base shell (131); An upper chain gripper (135) and a lower chain gripper (136) are respectively fixed on both sides of the anchor chain inside the base shell (131).

9. The mobile buoyancy block for underwater mooring cable-borne VIV power generation according to claim 8, wherein, The upper chain gripper (135) and the lower chain gripper (136) have similar compositions; specifically, they include a control gear (30), a motion control motor (31), a rack track (32) and a chain clip (33); The motion control motor (31) is fixedly arranged inside the base shell (131) and is fixedly riveted to the control gear (30), and the control gear (30) is meshed with the rack track (32) by gears; The chain clamp (33) is of a conical structure and is fixedly welded to the end of the rack track (32). The chain is held and released by inserting or pulling out the anchor chain hole of the anchor chain.

10. An underwater mooring cable-borne VIV power generation mobile buoyancy block according to claim 9, characterized in that, The steps of the automatic control process for holding and releasing the chain are as follows: (1): The control gears (30) of the upper chain holder (135) and the lower chain holder (136) are respectively located at the upper and lower ends of the rack track (32). The chain clamps (33) are both inserted into the chain holes of the anchor chain. The floating block moving base (13) is fixed to the anchor chain, and the first thruster (131) and the second thruster (132) do not work. (2): The single-chip microcomputer (113) judges whether the moving and adjusting floating block (1) is in the moving condition. (2.1): When the moving and adjusting floating block (1) is in the moving condition, go to step (3). (2.2): When the moving and adjusting floating block (1) is not in the moving condition, go to step (1) and continue to loop. (3): The motion control motors (31) of the upper chain holder (135) and the lower chain holder (136) rotate counterclockwise and clockwise by an angle a respectively. Driven by the control gears (30), the rack track (32) moves upward and downward respectively, so that the chain clamps (33) leave the anchor chain. Among them, the angle a corresponds to the moving distance when the chain clamp (33) is completely inserted into the anchor chain hole, which depends on the specific specifications. (4): Control the first thruster (131) and the second thruster (132) to work. (5): The single-chip microcomputer (113) judges whether the moving and adjusting floating block (1) reaches the target position. (5.1): When the moving and adjusting floating block (1) reaches the target position, go to step (6). (5.2): When the moving and adjusting floating block (1) does not reach the target position, go to step (4) and continue to loop. (6): The first thruster (131) and the second thruster (132) stop working. (7): The motion control motors (31) of the upper chain holder (135) and the lower chain holder (136) rotate clockwise and counterclockwise by an angle a respectively. Driven by the control gears (30), the rack track (32) moves downward and upward respectively, so that the chain clamps (33) are both inserted into the chain holes of the anchor chain. The floating block moving base (13) is fixed to the anchor chain.

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