Self-regulating fairing for suppressing vortex-induced vibrations of marine risers

Abstract

The application discloses a self-adjustable wing-shaped strake device for inhibiting vortex-induced vibration of a marine riser, wherein the wing-shaped strake is rotatably sleeved on the marine riser to inhibit vortex-induced vibration of the marine riser; a first rubber rod is rolled to generate an electric potential difference by rubbing against polytetrafluoroethylene, and a second rubber rod is rolled to generate an electric potential difference by rubbing against an aluminum foil, so that an electric current is generated between a positive electrode and a negative electrode; an automatic control module is arranged in the wing-shaped structure and is electrically connected with a rubbing power generation module; a flow rate sensor is fixed to a sealing cover and is located outside the wing-shaped structure to measure flow rate data in real time; a rolling gear is connected with a rotating shaft of an electric motor and is engaged with a fixed gear; when the electric motor drives the rotating gear to rotate, the wing-shaped strake rotates around the marine riser; and a computer controller is connected with the rubbing power generation module, the flow rate sensor and the electric motor to control the wing-shaped strake to rotate around the marine riser to an optimal position for inhibiting vibration of the riser based on the flow rate data. The device can self-supply power and adjust vortex-induced vibration of a marine riser structure.

Description

Technical Field

[0001] This invention relates to the field of marine engineering technology, and in particular to a self-adjusting airfoil plate device for suppressing vortex-induced vibration of marine risers. Background Technology

[0002] Marine riser systems are riser systems used to connect surface floating bodies to wellheads on the seabed, and are among the most complex types of equipment in deep-sea production systems. Under the influence of complex marine environmental loads, marine riser structures can experience vortex-induced vibration (VIV), which is one of the main causes of fatigue failure in risers. Therefore, it is necessary to develop a self-powered and automatically adjustable device to suppress vortex-induced vibration in marine risers.

[0003] The information disclosed in the background section is only intended to enhance the understanding of the background of the present invention, and therefore may contain information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0004] The purpose of this invention is to provide a self-adjusting airfoil plate device for suppressing vortex-induced vibration of marine risers. The airfoil plate can prevent the formation of vortices in the wake region of the marine riser, thereby suppressing vortex-induced vibration of the riser. The triboelectric power generation module converts the vibration energy into electrical energy for use by the automatic control module. The automatic control module can automatically adjust the position of the airfoil plate according to the change of the outflow velocity to achieve the best vibration suppression effect.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] The present invention provides a self-adjusting airfoil plate device for suppressing vortex-induced vibration of marine risers, comprising:

[0007] Marine risers are installed in the marine environment;

[0008] An airfoil plate, which is rotatably fitted onto the marine riser to suppress vortex-induced vibration of the marine riser, the airfoil plate comprising a cylindrical body fitted onto the marine riser and an airfoil structure with a cavity extending from the cylindrical body.

[0009] A fixed gear, which is fixedly sleeved onto the marine riser;

[0010] The slide rails are fixedly installed on the inner walls at both ends of the cylinder.

[0011] The guide rail is fixedly installed on the outer wall of the marine riser and fitted onto the slide rail;

[0012] A triboelectric power generation module, disposed within the airfoil structure, the triboelectric power generation module comprising,

[0013] The first triboelectric power generation unit includes,

[0014] First grille

[0015] A copper foil sheet is attached to the bottom of the first grid as the negative electrode.

[0016] A polytetrafluoroethylene film is attached to the surface of the copper foil sheet.

[0017] A first rubber rod, which is freely rolled on the polytetrafluoroethylene film,

[0018] The second triboelectric power generation unit includes,

[0019] Second grille,

[0020] An aluminum foil sheet is attached to the bottom of the second grid as the positive electrode.

[0021] The second rubber rod is placed freely rolling on the aluminum foil. When the first rubber rod rolls, it rubs against the polytetrafluoroethylene, and when the second rubber rod rolls, it rubs against the aluminum foil, generating a potential difference that causes a current to be generated between the positive and negative electrodes.

[0022] An automatic control module, disposed within the airfoil structure and electrically connected to the triboelectric power generation module, the automatic control module comprising:

[0023] The sealing cap is located at the top of the wing-shaped structure.

[0024] A flow velocity sensor, fixed to the sealing cap and located outside the airfoil structure, measures flow velocity data in real time.

[0025] An electric motor, which is fixed to the sealing cover,

[0026] A rolling gear, connected to the shaft of the electric motor and meshing with a fixed gear, causes the airfoil plates to rotate around the marine riser when the electric motor drives the rotating gear to do so.

[0027] A computer controller, located at the bottom of the airfoil structure, is connected to the triboelectric power generation module, a flow velocity sensor, and an electric motor to control the airfoil plates to rotate around the marine riser to the optimal position to suppress riser vibration based on flow velocity data.

[0028] In the self-adjusting airfoil plate device for suppressing vortex-induced vibration of marine risers, at least one set of fixed gears, an automatic control module, and airfoil plates are sequentially installed on the marine riser.

[0029] In the self-adjusting airfoil plate device for suppressing vortex-induced vibration of a marine riser, the airfoil plate is installed along the vertical direction of the marine riser and can rotate 360° along the marine riser.

[0030] In the self-adjusting airfoil plate device for suppressing vortex-induced vibration of marine risers, the copper foil is connected to the negative terminal of the computing controller via a connecting wire, and the aluminum foil is connected to the positive terminal of the computing controller via a connecting wire, forming a closed circuit. The electrical energy generated by the triboelectric power generation module drives the operation of the automatic control module.

[0031] In the self-adjusting airfoil plate device for suppressing vortex-induced vibration of marine risers, the flow velocity sensor and the sealing cover are connected and fixed by the flow velocity sensor fixing bolts.

[0032] In the self-adjusting airfoil plate device for suppressing vortex-induced vibration of marine risers, the flow velocity sensor and the computing controller are connected by a data cable. The flow velocity sensor acquires flow velocity data in real time and transmits the data to the computing controller.

[0033] In the self-adjusting airfoil plate device for suppressing vortex-induced vibration of marine risers, the electric motor and the sealing cover are connected and fixed by electric motor fixing bolts.

[0034] In the self-adjusting airfoil plate device for suppressing vortex-induced vibration of marine risers, the electric motor and the computing controller are connected by a control wire, so that the computing controller controls the rotation of the electric motor.

[0035] In the self-adjusting airfoil plate device for suppressing vortex-induced vibration of marine risers, the first and second grids are closely attached to the inner walls of the airfoil plate cavity on both sides, and the rear of the first and second grids are closely attached to the airfoil plate cavity partition.

[0036] In the aforementioned self-adjusting airfoil plate device for suppressing vortex-induced vibration of marine risers, a sealing cover is installed at the top of the airfoil plate for waterproofing.

[0037] In the above technical solution, the self-adjusting airfoil plate device for suppressing vortex-induced vibration of marine risers provided by this invention has the following beneficial effects: Triboelectric power generation utilizes frictional motion to generate electrical energy. When two dielectric materials rub against each other, an electrostatic effect occurs between them, resulting in charge separation and the formation of a potential difference. This potential difference can drive electron flow, generating current in a closed circuit. Under the action of external flow load, marine risers experience vortex-induced vibration, and the airfoil plates interfere with the flow field in the riser's wake region, hindering the formation of vortices in the riser's wake region, thus achieving vibration suppression. The triboelectric power generation module converts vibration energy into electrical energy for use by the automatic control module. The automatic control module's computational controller calculates and analyzes the flow velocity data collected by the flow velocity sensor to control the rotation of the electric motor and adjust the position of the airfoil plates to achieve the optimal vibration suppression effect. This invention can adjust its position in a timely manner according to changes in the incoming flow to achieve the best effect in suppressing riser vibration, while simultaneously capturing vibration energy and converting it into electrical energy for its own use, thus having a wide range of practical applications. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0039] Figure 1 This is a schematic diagram of a self-adjusting airfoil plate device for suppressing vortex-induced vibration of a marine riser, provided in an embodiment of the present invention.

[0040] Figure 2 This is an exploded view of a self-adjusting airfoil plate device for suppressing vortex-induced vibration of a marine riser, provided in an embodiment of the present invention.

[0041] Figure 3 This is a schematic cross-sectional view of the overall assembly of a self-adjusting airfoil plate device for suppressing vortex-induced vibration of a marine riser, provided in an embodiment of the present invention.

[0042] Figure 4 This is a schematic diagram of the installation of the top component of a self-adjusting airfoil plate device for suppressing vortex-induced vibration of a marine riser, provided in an embodiment of the present invention.

[0043] Figure 5 This is a schematic diagram of the assembly of a triboelectric power generation module and an automatic control module for a self-adjusting airfoil plate device for suppressing vortex-induced vibration of a marine riser, provided in an embodiment of the present invention.

[0044] Figure 6 This is an exploded view of the triboelectric power generation unit of a self-adjusting airfoil plate device for suppressing vortex-induced vibration of a marine riser, provided in an embodiment of the present invention. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0046] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0047] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0048] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0049] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0050] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0051] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0052] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0053] See Figure 1-6As shown, in one embodiment, the self-adjusting airfoil plate device for suppressing vortex-induced vibration of marine risers according to the present invention includes,

[0054] Marine riser 1, which is installed in the marine environment;

[0055] Airfoil plate 3, which is rotatably sleeved on the outer wall of the marine riser 1 to suppress vortex-induced vibration of the marine riser 1, the airfoil plate 3 includes a cylindrical body sleeved on the marine riser 1 and an airfoil structure with a cavity extending from the cylindrical body.

[0056] Fixed gear 2 is fixedly sleeved on the outer wall of marine riser 1;

[0057] Slide rails 7a and 7b are fixedly installed on the inner walls at both ends of the cylinder.

[0058] Guide rails 6b and 6b are fixedly installed on the outer wall of the marine riser 1 and fitted onto slide rails 7a and 7b;

[0059] A triboelectric power generation module is disposed within the airfoil structure. The triboelectric power generation module includes a first triboelectric power generation unit 14a and a first triboelectric power generation unit 14b.

[0060] The first triboelectric power generation unit 14a includes,

[0061] First grille 18a,

[0062] Copper foil 21 is attached to the bottom of the first grid 18a as a negative electrode.

[0063] A polytetrafluoroethylene film 20 is attached to the surface of the copper foil 21.

[0064] The first rubber rod 19a is placed freely and rolling on the polytetrafluoroethylene film 20.

[0065] The second triboelectric power generation unit 14b includes,

[0066] Second grille 18b,

[0067] Aluminum foil 22 is attached to the bottom of the second grid 18b as a positive electrode.

[0068] The second rubber rod 19b is placed freely on the aluminum foil 22. When the first rubber rod 19a rolls, it rubs against the polytetrafluoroethylene film 20, and when the second rubber rod 19b rolls, it rubs against the aluminum foil 22, generating a potential difference, which causes a current to be generated between the positive and negative electrodes.

[0069] An automatic control module 8, which is disposed in the airfoil structure and electrically connected to the triboelectric power generation module, includes,

[0070] Sealing cap 12, which is located on the top of the wing-shaped structure,

[0071] A flow velocity sensor 5 is fixed to the sealing cover 12 and located outside the airfoil structure to measure flow velocity data in real time.

[0072] Electric motor 10, which is fixed to the sealing cover 12,

[0073] The rolling gear 4 is connected to the shaft of the electric motor 10 and meshes with the fixed gear 2. When the electric motor 10 drives the rotating gear to rotate, the airfoil plate 3 rotates around the marine riser 1.

[0074] A computer controller 16 is located at the bottom of the airfoil structure. The computer controller 16 is connected to the triboelectric power generation module, the flow velocity sensor 5 and the electric motor 10 to control the airfoil plate 3 to rotate around the marine riser 1 to the optimal position to suppress riser vibration based on the flow velocity data.

[0075] In a preferred embodiment of the self-adjusting airfoil plate device for suppressing vortex-induced vibration of a marine riser, at least one set of fixed gears 2, an automatic control module 8, and airfoil plates 3 are sequentially installed on the marine riser 1.

[0076] In a preferred embodiment of the self-adjusting airfoil plate device for suppressing vortex-induced vibration of a marine riser, the airfoil plate 3 is installed vertically along the marine riser 1 and can rotate 360° along the marine riser 1.

[0077] In a preferred embodiment of the self-adjusting airfoil plate device for suppressing vortex-induced vibration of marine risers, the copper foil 21 is connected to the negative terminal of the computing controller 16 via a connecting wire 17a, and the aluminum foil 22 is connected to the positive terminal of the computing controller 16 via a connecting wire 17b, forming a closed circuit. The electrical energy generated by the triboelectric power generation module drives the operation of the automatic control module 8.

[0078] In a preferred embodiment of the self-adjusting airfoil plate device for suppressing vortex-induced vibration of marine risers, the flow velocity sensor 5 and the sealing cover 12 are connected and fixed by the flow velocity sensor 5 fixing bolts.

[0079] In a preferred embodiment of the self-adjusting airfoil plate device for suppressing vortex-induced vibration of marine risers, the flow velocity sensor 5 and the computing controller 16 are connected via a data cable 15. The flow velocity sensor 5 acquires flow velocity data in real time and transmits the data to the computing controller 16.

[0080] In a preferred embodiment of the self-adjusting airfoil plate device for suppressing vortex-induced vibration of marine risers, the electric motor 10 and the sealing cover 12 are connected and fixed by the electric motor 10 fixing bolts.

[0081] In a preferred embodiment of the self-adjusting airfoil plate device for suppressing vortex-induced vibration of marine risers, the electric motor 10 and the computing controller 16 are connected by control wires 13a and 13b, so that the computing controller 16 controls the electric motor 10 to rotate.

[0082] In a preferred embodiment of the self-adjusting airfoil plate device for suppressing vortex-induced vibration of marine risers, the first grid 18a and the second grid 18b are closely attached to the inner wall of the cavity of the airfoil plate 3 on both sides, and the rear of the first grid 18a and the second grid 18b are closely attached to the cavity partition of the airfoil plate 3.

[0083] In a preferred embodiment of the self-adjusting airfoil plate device for suppressing vortex-induced vibration of marine risers, the sealing cover 12 is installed at the top of the airfoil plate 3 for waterproofing.

[0084] In one embodiment, such as Figure 1-5 As shown, the first triboelectric power generation unit 14a, the second triboelectric power generation unit 14b, and the computing controller 16 are connected by connecting wires 17a and 17b, respectively. The flow velocity sensor 5 and the sealing cover 12 are connected and fixed by flow velocity sensor fixing bolts 11a, 11b, 11c, and 11d. The flow velocity sensor 5 and the computing controller 16 are connected via data cable 15. The flow velocity sensor 5 acquires flow velocity data in real time and transmits the data to the computing controller 16. The electric motor 10 and the sealing cover 12 are connected and fixed by electric motor fixing bolts 9a, 9b, 9c, and 9d. The shaft of the electric motor 10 is connected and fixed to the rolling gear 4, allowing the electric motor 10 to drive the rolling gear 4 to rotate. The electric motor 10 and the computing controller 16 are connected by control wires 13a and 13b, allowing the computing controller 16 to control the rotation of the electric motor 10. After the automatic control module 8 is connected, it is assembled with the airfoil plate 3. The computing controller 16, the first triboelectric power generation unit 14a, the second triboelectric power generation unit 14b, the connecting wires 17a and 17b, the control wire 13, and the data cable 15 are placed in the reserved cavity of the airfoil plate 3. The computing controller 16 is placed at the bottom of the airfoil plate 3. The two sides of the grille 18 are close to the inner wall of the airfoil plate 3 cavity, and the rear of the grille 18 is close to the airfoil plate 3 cavity partition. The sealing cover 12 is installed on the top of the airfoil plate 3 and waterproofed. The slide rails 6a and 6b are respectively fixedly installed at both ends of the inner core of the airfoil plate 3. The guide rails 7a and 7b are respectively fitted inside the slide rails 6a and 6b. After assembly, the guide rails 7a and 7b are fixedly installed on the outer wall of the marine riser 1. The airfoil plate 3 can rotate 360 ​​degrees along the marine riser 1. Fixed gear 2 is fixedly installed on the outer wall of marine riser 1 and meshes with rotating gear 4. When electric motor 10 drives rotating gear 4 to rotate, airfoil plate 3 rotates around marine riser 1. The computational controller 16 analyzes the flow velocity data collected by flow velocity sensor 5 and controls electric motor 10 to rotate, adjusting airfoil plate 3 to the optimal position to suppress riser vibration.

[0085] like Figure 5 , Figure 6 As shown, a copper foil sheet 21 is attached to the bottom of the first grid 18a, a polytetrafluoroethylene film 20 is attached to the top of the copper foil sheet 21, and a freely rolling second rubber rod 19a is placed on top. An aluminum foil sheet 22 is attached to the bottom of the second grid 18b, and a freely rolling second rubber rod 19b is placed on top. When the airfoil plate 3 vibrates with the riser, the rubber rods 18a and 18b roll and rub against the polytetrafluoroethylene film 20 and the aluminum foil sheet 22 respectively, generating a potential difference. The aluminum foil sheet 22 is the positive electrode, and the copper foil sheet 21 is the negative electrode. After being connected to the computing controller 16 via connecting wires 17a and 17b, it provides power to the automatic control module 8.

[0086] Finally, it should be noted that the described embodiments are only some embodiments of this application, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0087] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A self-adjusting airfoil plate device for suppressing vortex-induced vibration of marine risers, characterized in that, It includes, Marine risers are installed in the marine environment; An airfoil plate, which is rotatably fitted onto the marine riser to suppress vortex-induced vibration of the marine riser, the airfoil plate comprising a cylindrical body fitted onto the marine riser and an airfoil structure with a cavity extending from the cylindrical body. A fixed gear, which is fixedly sleeved onto the marine riser; The slide rails are fixedly installed on the inner walls at both ends of the cylinder. The guide rail is fixedly installed on the outer wall of the marine riser and fitted onto the slide rail; A triboelectric power generation module, disposed within the airfoil structure, the triboelectric power generation module comprising, The first triboelectric power generation unit includes, First grille A copper foil sheet is attached to the bottom of the first grid as the negative electrode. A polytetrafluoroethylene film is attached to the surface of the copper foil sheet. A first rubber rod, which is freely rolled on the polytetrafluoroethylene film, The second triboelectric power generation unit includes, Second grille, An aluminum foil sheet is attached to the bottom of the second grid as the positive electrode. The second rubber rod is placed freely rolling on the aluminum foil. When the first rubber rod rolls, it rubs against the polytetrafluoroethylene, and when the second rubber rod rolls, it rubs against the aluminum foil, generating a potential difference that causes a current to be generated between the positive and negative electrodes. An automatic control module, disposed within the airfoil structure and electrically connected to the triboelectric power generation module, the automatic control module comprising: The sealing cap is located at the top of the wing-shaped structure. A flow velocity sensor, fixed to the sealing cap and located outside the airfoil structure, measures flow velocity data in real time. An electric motor, which is fixed to the sealing cover, A rolling gear, connected to the shaft of the electric motor and meshing with a fixed gear, causes the airfoil plates to rotate around the marine riser when the electric motor drives the rolling gear to rotate. A computer controller, located at the bottom of the airfoil structure, is connected to the triboelectric power generation module, a flow velocity sensor, and an electric motor to control the airfoil plates to rotate around the marine riser to the optimal position to suppress riser vibration based on flow velocity data.

2. The self-adjusting airfoil plate device for suppressing vortex-induced vibration of marine risers according to claim 1, characterized in that, The marine riser is equipped with at least one set of fixed gears, an automatic control module, and airfoil plates in sequence.

3. The self-adjusting airfoil plate device for suppressing vortex-induced vibration of marine risers according to claim 1, characterized in that, The airfoil-shaped array is installed vertically along the marine riser and can rotate 360° along the marine riser.

4. The self-adjusting airfoil plate device for suppressing vortex-induced vibration of marine risers according to claim 1, characterized in that, The copper foil is connected to the negative terminal of the computer controller via a connecting wire, and the aluminum foil is connected to the positive terminal of the computer controller via a connecting wire, forming a closed circuit. The electrical energy generated by the triboelectric power generation module drives the operation of the automatic control module.

5. The self-adjusting airfoil plate device for suppressing vortex-induced vibration of marine risers according to claim 1, characterized in that, The flow rate sensor and the sealing cap are connected and fixed by the flow rate sensor fixing bolts.

6. The self-adjusting airfoil plate device for suppressing vortex-induced vibration of marine risers according to claim 1, characterized in that, The flow velocity sensor is connected to the computer controller via a data cable. The flow velocity sensor acquires flow velocity data in real time and transmits the data to the computer controller.

7. The self-adjusting airfoil plate device for suppressing vortex-induced vibration of marine risers according to claim 1, characterized in that, The electric motor and the sealing cover are connected and fixed by electric motor fixing bolts.

8. The self-adjusting airfoil plate device for suppressing vortex-induced vibration of marine risers according to claim 1, characterized in that, The electric motor is connected to the computer controller by a control wire, which enables the computer controller to control the rotation of the electric motor.

9. The self-adjusting airfoil plate device for suppressing vortex-induced vibration of marine risers according to claim 1, characterized in that, The first and second grilles are attached to the inner walls of the cavities of the airfoil plates on both sides, and the rear of the first and second grilles are attached to the cavity partitions of the airfoil plates.

10. The self-adjusting airfoil plate device for suppressing vortex-induced vibration of marine risers according to claim 1, characterized in that, The sealing cap is installed at the top of the wing-shaped plate for waterproofing.

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