A Vortex-induced Vibration Suppression Device Applicable to Water Flows in Multiple Directions

Abstract

The present invention provides a vortex-induced vibration suppression device applicable to water flows in multiple directions, belonging to the technical field of offshore drilling and production. The vortex-induced vibration suppression device applicable to water flows in multiple directions includes a suppression assembly and two limiting rings. In the present invention, when the impact end of the sleeve is impacted by the water flow, the sleeve moves to the second position, and at least one baffle rod away from the impact end is inserted into the corresponding opening. Then, a part of the water flow flows along the outer wall direction of the sleeve, and another part of the water flow enters the gap between the sleeve and the pipeline from the opening near the impact end. The water flow flowing into the gap remains dynamically static at the farthest point from the entering opening, avoiding the generation of vortex-induced vibration on the outer periphery of the sleeve. After the gap is filled with water, the water flows out from the unblocked opening, causing the outflowing water to interfere with the water flow flowing along the outer wall of the sleeve, avoiding the transmission of the vortex-induced vibration generated on the outer wall of the sleeve to the pipeline, and effectively suppressing the generation of vortex-induced vibration.

Description

Technical Field

[0001] The present invention relates to the technical field of offshore drilling and production, and particularly relates to a vortex-induced vibration suppression device applicable to water flows in multiple directions. Background Art

[0002] The Karman vortex street at the tail of a bluff body causes periodically varying fluid forces, and when these fluid forces act on a structure, they cause displacement, vibration, and deformation responses of the structure. The structural vibration response caused by the alternately shedding vortices is called vortex-induced vibration. For cylindrical-section structures commonly used in ocean engineering, such as drilling and production strings, as key components to ensure the normal operation of deep-sea oil and gas exploration and development, they will encounter vortex-induced vibration problems caused by wave-current action during service. When the vortex-induced vibration frequency is close to the natural frequency of the string, resonance will occur, which will seriously affect the service strength and life of the string. In a deep-water environment, the main ocean environmental load borne by the string is the action of water flow. When the water flow passes through the string, it will cause the alternate shedding of vortices on the string, thereby generating periodically varying forces on the string. Generally, deep-sea strings have a relatively low fundamental vibration frequency. Under the action of vortex-induced water flow, the string is prone to vortex-induced vibration, resulting in large-amplitude vibration of the string structure, and even collisions between strings and fatigue damage. Therefore, it is necessary to equip the string with corresponding devices to suppress vortex-induced vibration to reduce damage to the drilling and production string.

[0003] Chinese Patent CN107091059A, published on August 25, 2017, discloses a flexible vortex-induced vibration suppression device for underwater risers, which consists of a riser connection device, a perturbation device, and a fixing device. The fixing device fixes the perturbation device and evenly distributes it on the outer surface of the riser connection device. By installing this flexible vortex-induced vibration suppression device on the cylindrical riser of an offshore platform, the perturbation devices evenly arranged around the underwater riser will interfere with the formation of vortices behind the cylindrical underwater riser, and comb the vortices with a larger vorticity intensity into vortices with a smaller vorticity intensity, effectively suppressing the vortex-induced vibration generated by the underwater riser. The design structure of this prior art is relatively simple, convenient for installation and maintenance, and can effectively suppress the vortex-induced vibration of the underwater riser, with good economy and practicality. In order to adapt to the vortex-induced vibration generated by water flows in different directions in the above patent, multiple flexible ribbons are used, and the multiple flexible ribbons are prone to knotting and entanglement, affecting their subsequent normal operation. Summary of the Invention

[0004] The object of the present invention is to propose a vortex-induced vibration suppression device applicable to water flows in multiple directions in view of the above-mentioned deficiencies of the prior art.

[0005] The present invention provides a vortex-induced vibration suppression device applicable to water flows in multiple directions for suppressing the vortex-induced vibration generated by water flows on a pipeline, including a suppression component and two limiting rings respectively arranged along the length direction of the pipeline. The two limiting rings are parallel and both are fixed on the outer wall of the pipeline. The suppression component includes a sleeve, a plurality of connecting pieces, and a plurality of blocking rods. The sleeve is sleeved on the outer periphery of the part of the pipeline located between the two limiting rings. A plurality of openings are evenly arranged in the circumferential direction on the sleeve. The plurality of connecting pieces respectively correspond to the openings one by one. One end of each connecting piece is connected to the pipeline, and the other end passes through the corresponding opening and is connected to the corresponding blocking rod. The two ends of the sleeve are respectively slidably connected to the two limiting rings. When the sleeve slides to the first position, each blocking rod is arranged at an interval from the corresponding opening. When the impact end of the sleeve is impacted by the water flow, the sleeve moves to the second position, and at least one blocking rod away from the impact end is inserted into the corresponding opening.

[0006] Further, the two limiting rings are detachably fixed on the outer wall of the pipeline.

[0007] Further, a plurality of limiting grooves are provided on one side surface of the limiting ring opposite to each other. The plurality of limiting grooves respectively correspond to the plurality of blocking rods one by one. A sliding block inserted into the limiting groove is provided on the blocking rod.

[0008] Further, a plurality of limiting grooves are provided on one side surface of each of the two limiting rings opposite to each other. Sliding blocks inserted into the corresponding limiting grooves are provided at both ends of the blocking rod.

[0009] Further, the connecting piece is a bendable elastic rod. The diameter of the opening is greater than or equal to twice the diameter of the elastic rod. One end of the elastic rod is fixedly connected to the blocking rod, and the other end is hinged to the pipeline.

[0010] Further, the connecting piece is a flexible rope. The two ends of the flexible rope are respectively connected to the blocking rod and the pipeline.

[0011] Further, the connecting piece is a rubber rod. The two ends of the rubber rod are respectively fixedly connected to the blocking rod and the pipeline.

[0012] Further, the opening is a strip-shaped through groove. The extending direction of the opening is parallel to the extending direction of the sleeve. A strip-shaped protrusion is provided on one side surface of the blocking rod close to the corresponding opening. The strip-shaped protrusion can be inserted into the corresponding opening.

[0013] Further, the opening includes a plurality of through holes. The plurality of through holes are arranged in sequence along the extending direction of the sleeve. A plurality of circular protrusions are provided on one side surface of the blocking rod close to the corresponding opening. The plurality of circular protrusions correspond to the plurality of through holes one by one. The circular protrusions can be inserted into the corresponding through holes.

[0014] Further, a bevel is provided at the edge of the opening close to the blocking rod.

[0015] The vortex-induced vibration suppression device applicable to water flows in multiple directions of the present invention has the following beneficial effects:

[0016] When the sleeve slides to the first position, each stop bar is spaced apart from the corresponding opening. At this time, the sleeve is not impacted by the water flow. When the impact end of the sleeve is impacted by the water flow, the water flow pushes the sleeve, and the sleeve moves to the second position. At least one stop bar away from the impact end is inserted into the corresponding opening, that is, at least one opening on the side of the sleeve away from the water flow is blocked by the stop bar. Then, a part of the water flow flows along the outer wall direction of the sleeve, and another part of the water flow enters the gap between the sleeve and the pipeline from the opening near the impact end. The water flow flowing into the gap reaches the farthest point from the entering opening and remains dynamically static, so that no vortex can be generated in the gap, avoiding vortex-induced vibration on the outer periphery of the sleeve. After the gap is filled with water, the water flows out from the unblocked opening, making the outflowing water interfere with the water flow flowing along the outer wall of the sleeve, avoiding the transmission of the vortex-induced vibration generated on the outer wall of the sleeve to the pipeline, and effectively suppressing the generation of vortex-induced vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings incorporated into the specification and constituting a part of the specification illustrate embodiments of the present invention and are used in conjunction with the description to explain the principles of the present invention. In these drawings, like reference numerals are used to represent like elements. The drawings in the following description are some embodiments of the present invention, not all embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 is a schematic diagram of the overall structure of the vortex-induced vibration suppression device applicable to water flows in multiple directions provided by an embodiment of the present invention;

[0019] Figure 2 is a schematic diagram of the structure of the sleeve of the vortex-induced vibration suppression device applicable to water flows in multiple directions provided by an embodiment of the present invention when the sleeve is in the first position;

[0020] Figure 3 is a schematic diagram of the structure of the sleeve of the vortex-induced vibration suppression device applicable to water flows in multiple directions provided by an embodiment of the present invention when the sleeve is in the second position;

[0021] Figure 4 is a schematic diagram of the structure of the sleeve of the vortex-induced vibration suppression device applicable to water flows in multiple directions provided by an embodiment of the present invention;

[0022] Figure 5 is a schematic diagram of the structure of the connection between the stop bar and the flexible rope of the vortex-induced vibration suppression device applicable to water flows in multiple directions provided by an embodiment of the present invention;

[0023] Figure 6 This is a schematic structural diagram of the limiting ring in the vortex-induced vibration suppression device applicable to water flows in multiple directions provided by an embodiment of the present invention.

[0024] In the figure: 100 - pipeline, 200 - limiting ring, 210 - limiting groove, 300 - suppression assembly, 310 - sleeve, 311 - opening, 320 - connecting member, 330 - blocking rod. Specific embodiments

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention. It should be noted that, without conflict, the embodiments in this application and the features in the embodiments may be combined with each other arbitrarily.

[0026] Please refer to Figures 1-6 An embodiment of the present invention provides a vortex-induced vibration suppression device applicable to water flows in multiple directions, which is used to suppress the vortex-induced vibration generated by water flow on the pipeline 100. The device includes a suppression assembly 300 and two limiting rings 200 respectively arranged along the length direction of the pipeline 100. The two limiting rings 200 are parallel and both fixed to the outer wall of the pipeline 100. The suppression assembly 300 includes a sleeve 310, a plurality of connecting members 320, and a plurality of blocking rods 330. The sleeve 310 is sleeved on the outer periphery of the part of the pipeline 100 between the two limiting rings 200. A plurality of openings 311 are evenly arranged circumferentially on the sleeve 310. The plurality of connecting members 320 respectively correspond to the openings 311 one by one. One end of the connecting member 320 is connected to the pipeline 100, and the other end passes through the corresponding opening 311 and is connected to the corresponding blocking rod 330. The two ends of the sleeve 310 are respectively slidably connected to the two limiting rings 200. When the sleeve 310 slides to the first position, each blocking rod 330 is spaced from the corresponding opening 311. When the impact end of the sleeve 310 is impacted by water flow, the sleeve 310 moves to the second position, and at least one blocking rod 330 away from the impact end is inserted into the corresponding opening 311.

[0027] Here, two limiting rings 200 are arranged in sequence along the length direction of the pipeline 100, and the two limiting rings 200 are arranged in parallel. If the pipeline 100 is arranged vertically, the two limiting rings 200 are both arranged horizontally. The two limiting rings 200 are respectively fixed at different heights on the pipeline 100. After fixing one limiting ring 200, the sleeve 310 is sleeved on the outer periphery of the pipeline 100, and the bottom of the sleeve 310 is abutted against this limiting ring 200. Then, according to the height of the sleeve 310, the other limiting ring 200 is fixed on the pipeline 100, so that the bottom of the other limiting ring 200 abuts against the top end of the sleeve 310. The two ends of the sleeve 310 are respectively slidably connected with the two limiting rings 200, ensuring that the sleeve 310 can slide between the two limiting rings 200. The pipeline 100 is arranged vertically, the blocking rod 330 is arranged vertically, and a plurality of openings 311 are circumferentially and uniformly arranged on the sleeve 310. Then the angles between adjacent two openings 311 are the same. The number of openings 311 can be an even number, ensuring that the connection line between one opening 311 and the other opening 311 opposite to it coincides with a diameter of the sleeve 310, and the angle between these two openings 311 is 180 degrees. If the flowing direction of the water flow is the same as the connection line direction of these two openings 311, the water flow impacts the sleeve 310, causing the sleeve 310 to move along the connection line direction of the two openings 311, so that a part of the water flow enters the sleeve 310 from one opening 311. Since the axis of the blocking rod 330 corresponding to each opening 311 coincides with the connection line of these two openings 311, the other opening 311 moves towards the direction close to its corresponding blocking rod 330. When the sleeve 310 moves to the second position, the blocking rod 330 corresponding to the other opening 311 can block the other opening 311. At this time, a part of the water flow enters the gap between the sleeve 310 and the pipeline 100, and the other part of the water flow flows along the outer wall direction of the sleeve 310 and enters the gap. The water flow entering the gap fills the gap and then flows out from the unblocked opening 311. The water flow flowing out from the opening 311 interferes with the part of the water flow passing through the outer wall of the sleeve 310, effectively suppressing the generation of vortex-induced vibration. The even number of openings 311 enables a group of openings 311 to be arranged along a plurality of radial directions of the sleeve 310, so that there are an even number of connecting pieces 320 and an even number of blocking rods 330, making it applicable to water flows in multiple directions, with good vortex-induced vibration suppression effect and high working stability. The sleeve 310 can include two semi-cylindrical tubes arranged symmetrically, and the two semi-cylindrical tubes are butted to form a circular sleeve 310.

[0028] Both of the two limiting rings 200 can be detachably fixed to the outer wall of the pipeline 100.

[0029] Specifically, the two limiting rings 200 can be detachably mounted on the outer wall of the pipeline 100, which facilitates the installation of the limiting rings 200 on the pipeline 100 and also facilitates the removal of the limiting rings 200 from the pipeline 100. When it is necessary to adjust the position of the sleeve 310, the limiting ring 200 can be removed again, the position of the limiting ring 200 can be adjusted, and then the limiting ring 200 can be reinstalled on the pipeline 100. The limiting ring 200 can be sleeved and fixed on the pipeline 100.

[0030] See Figure 6 , a plurality of limiting grooves 210 can be provided on one side surface of the limiting ring 200 opposite to each other. The plurality of limiting grooves 210 respectively correspond to a plurality of blocking rods 330 one by one. A slider inserted into the limiting groove 210 is provided on the blocking rod 330.

[0031] A plurality of limiting grooves 210 can be provided on one side surface of each of the two limiting rings 200 opposite to each other. Sliders inserted into the corresponding limiting grooves 210 are provided at both ends of the blocking rod 330.

[0032] Specifically, the limiting grooves 210 can be uniformly arranged on the limiting ring 200. A plurality of limiting grooves 210 can be provided on one limiting ring 200, and the slider at one end of the blocking rod 330 is inserted into the limiting groove 210, so as to fix the blocking rod 330 through one limiting ring 200. Alternatively, a plurality of limiting grooves 210 can be provided on the two limiting rings 200, and the limiting grooves 210 correspond to the blocking rods 330 one by one. The sliders at both ends of the blocking rod 330 are respectively inserted into the corresponding sliding grooves, so as to fix the blocking rod 330 through the two limiting rings 200. When the sleeve 310 is in the first position, the cross-sections of the sleeve 310 and the pipeline 100 are two concentric circles. The pipeline 100 is vertically arranged, and the blocking rod 330 is also vertically arranged. The blocking rod 330 is parallel to the pipeline 100. The limiting ring 200 fixes the blocking rod 330, and the pipeline 100 cannot move, so the limiting ring 200 cannot move. Then, the blocking rod 330 is restricted by the limiting grooves 210 on the limiting ring 200 and cannot move towards the direction close to the sleeve 310, and only the sleeve 310 can move.

[0033] Specifically, both ends of multiple shift levers 330 are respectively slidably connected to two limit rings 200 and can both be moved to be clamped in corresponding openings 311; the sleeve 310 can slide to a first position and a second position. When the sleeve 310 slides to the first position, the multiple shift levers 330 and the multiple openings 311 are arranged at intervals. When the sleeve 310 slides to the second position, at least one shift lever 330 is clamped in the corresponding opening 311. The two limit rings 200 in the present application are structures for fixing and restricting the position of the suppression assembly 300 in the length direction of the pipeline 100 and provide a bearing for the sleeve 310 to slide relative to the pipeline 100 in the radial direction of the pipeline 100. The suppression assembly 300 in the present application is a structure for suppressing the vortex-induced vibration generated by the water flow in any direction on the pipeline 100. The shift lever 330 is arranged parallel to the pipeline 100, and the perpendicular distance from the shift lever 330 to the pipeline 100 is greater than the difference between the outer diameters of the sleeve 310 and the pipeline 100.

[0034] The connecting member 320 can be a bendable elastic rod. The diameter of the opening 311 is greater than or equal to twice the diameter of the elastic rod. One end of the elastic rod is fixedly connected to the shift lever 330, and the other end is hinged to the pipeline 100.

[0035] Specifically, the shift lever 330 can be a cylindrical rod, the pipeline 100 can be a cylindrical pipe, the axis of the connecting member 320 can be perpendicular to the tangent at the connection between the connecting member 320 and the pipeline 100, and the axis of the connecting member 320 can also be perpendicular to the tangent of the connecting member 320 at the connection between the connecting member 320 and the shift lever 330. The axis of the elastic rod can coincide with the axis of the opening 311. In the present application, when the sleeve 310 moves to the second position, the sleeve 310 may not hit the elastic rod. Of course, the sleeve 310 may also hit the elastic rod. Since the elastic rod is elastic, when the sleeve 310 hits the elastic rod, the middle of the elastic rod bends, and the end of the elastic rod connected to the pipeline 100 rotates. The rotation direction of the elastic rod is within a cross-section of the sleeve 310.

[0036] See Figure 5 , the connecting member 320 can be a flexible rope, and both ends of the flexible rope are respectively connected to the shift lever 330 and the pipeline 100.

[0037] Specifically, the flexible rope can be in a taut state. See Figure 6 , the position of the above-mentioned limit groove 210 can be defined to keep the flexible rope always in a taut state. One end of the flexible rope can be tied to the pipeline 100, and the other end can be tied to the shift lever 330.

[0038] The connecting member 320 can be a rubber rod, and both ends of the rubber rod are respectively fixedly connected to the shift lever 330 and the pipeline 100.

[0039] Specifically, when the sleeve 310 moves from the first position towards the second position, the sleeve 310 squeezes the middle part of the flexible rope or the middle part of the rubber rod. Since the flexible rope and the rubber rod are elastic, the middle part of the flexible rope or the rubber rod deforms, ensuring that the sleeve 310 can move stably. The aperture of the opening 311 is at least twice the diameter of the connecting rod. The connecting rod rotates around the middle stop rod 330, and one end of the stop rod 330 rotates through a very small angle. Refer to Figure 2 、 Figure 3 , and one end of the stop rod 330 rotates through a very small angle along the direction of the water flow. In the embodiment where the connecting member 320 is a flexible rope and a rubber rod, the displacement of the stop rod 330 is provided by elastic deformation. In the embodiment where the connecting member 320 is a connecting rod, the displacement of the stop rod 330 is provided by rotation. Of course, in other embodiments, the connecting member 320 can also be replaced by other forms of structures, and the embodiments of the present invention do not limit this.

[0040] Refer to Figure 4 , the opening 311 can be a strip-shaped through slot, and the extending direction of the opening 311 is parallel to the extending direction of the sleeve 310. A strip-shaped protrusion is provided on one side surface of the stop rod 330 close to the corresponding opening 311, and the strip-shaped protrusion can be inserted into the corresponding opening 311.

[0041] The opening 311 can include a plurality of through holes, and the plurality of through holes are arranged in sequence along the extending direction of the sleeve 310. A plurality of circular protrusions are provided on one side surface of the stop rod 330 close to the corresponding opening 311, and the plurality of circular protrusions correspond to the plurality of through holes one by one, and the circular protrusions can be inserted into the corresponding through holes.

[0042] Specifically, in other embodiments, the opening 311 can also adopt other forms of structures to achieve the cooperation with the stop rod 330.

[0043] A bevel can be provided at the edge of the opening 311 close to the stop rod 330.

[0044] Specifically, in order to facilitate the stop rod 330 to completely block the opening 311, in one embodiment, a bevel is provided at the edge of the opening 311 close to the stop rod 330, and the inner diameter of the bevel gradually increases along the direction close to the stop rod 330, which is convenient for inserting the stop rod 330 into the opening 311.

[0045] Specifically, refer to Figure 3, for ease of understanding, the pipe 100 and the sleeve 310 are described by taking the water flow in the vertically upward direction as an example. At this time, the sleeve 310 moves relative to the pipe 100 in the vertically upward direction until the uppermost opening 311 of the sleeve 310 is blocked by the corresponding stop bar 330. A cavity is formed between the pipe 100 and the sleeve 310 with water inlet from the bottom and water outlet from both sides. The water flow in the sleeve 310 stagnates when it flows to the uppermost part. At this time, the water flow maintains a dynamic stillness in the gap between the sleeve 310 and the pipe 100, avoiding the generation of vortex-induced vibration above the pipe 100. At the same time, the water flowing out from both sides of the sleeve 310 interferes with the water flow flowing along the outer wall of the sleeve 310, preventing the vortex-induced vibration generated on the outer wall of the sleeve 310 from being transmitted to the pipe 100, effectively suppressing the generation of vortex-induced vibration. Affected by the connecting member 320, the sleeve 310 only rotates slightly even if it rotates, and forms Figure 3 The layout method of the position does not affect the implementation of the present invention. It should be noted that the above-mentioned "upper" and other orientations are Figure 3 The orientations shown in the figure. The left, right, bottom, and top respectively represent the water flows in the four horizontal directions received by the pipe 100. The movement of the sleeve and the cooperation with the stop bar 330 can effectively suppress the generation of vortex-induced vibration.

[0046] Specifically, compared with the prior art, the provided suppression assembly 300 includes a sleeve 310, a plurality of connecting members 320, and a plurality of stop bars 330 corresponding to the plurality of connecting members 320 one by one. When the sleeve 310 slides to the first position, the plurality of stop bars 330 are arranged at intervals from the plurality of openings 311. At this time, the sleeve 310, that is, the pipe 100, is not impacted by the water flow. When the sleeve, that is, the pipe 100, is impacted by the water flow, the water flow pushes the sleeve 310 to slide relative to the pipe 100 to the second position. At this time, at least one stop bar 330 is embedded in the corresponding opening 311, and the opening 311 on the side of the sleeve 310 away from the water flow is blocked by the stop bar 330. Part of the water flow flows along the outer wall direction of the sleeve 310, and another part of the water flow enters the gap between the sleeve 310 and the pipe 100 from the opening 311 facing the water flow, and flows out from the plurality of openings 311 on both sides of the water flow direction. The water flow flowing out from the opening 311 interferes with part of the water flow on the outer wall of the sleeve 310, effectively suppressing the generation of vortex-induced vibration. This device is applicable to water flows in any direction, with good vortex-induced vibration suppression effect and high working stability.

[0047] The content described above can be implemented alone or in various combinations, and these variant ways are all within the protection scope of the present invention.

[0048] It should be noted that in the description of the present application, the terms "upper end", "lower end", and "bottom end" indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this application is usually placed during use. These are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application. Moreover, the term "comprise", "include" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising one..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the said element.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A vortex-induced vibration suppression device applicable to water flows in multiple directions, which is used to suppress the vortex-induced vibration generated by water flows on a pipeline (100). Characterized in that: It includes a suppression component (300) and two limiting rings (200) respectively arranged along the length direction of the pipeline (100). The two limiting rings (200) are parallel and both are fixed on the outer wall of the pipeline (100). The suppression component (300) includes a sleeve (310), a plurality of connecting pieces (320), and a plurality of blocking rods (330). The sleeve (310) is sleeved on the outer periphery of the part of the pipeline (100) located between the two limiting rings (200). A plurality of openings (311) are evenly arranged in the circumferential direction on the sleeve (310). The plurality of connecting pieces (320) respectively correspond to the openings (311) one by one. One end of the connecting piece (320) is connected to the pipeline (100), and the other end passes through the corresponding opening (311) and is connected to the corresponding blocking rod (330); both ends of the sleeve (310) are slidably connected to the two limiting rings (200); when the sleeve (310) slides to the first position, each blocking rod (330) is spaced from the corresponding opening (311); when the impact end of the sleeve (310) is impacted by water flow, the sleeve (310) moves to the second position, and at least one blocking rod (330) far from the impact end is inserted into the corresponding opening (311).

2. A vortex-induced vibration suppression device applicable to water flows in multiple directions according to claim 1, Characterized in that: The two limiting rings (200) are detachably fixed on the outer wall of the pipeline (100).

3. A vortex-induced vibration suppression device applicable to water flows in multiple directions according to claim 1 or 2, Characterized in that: A plurality of limiting grooves (210) are provided on one side surface of the limiting ring (200) opposite to each other. The plurality of limiting grooves (210) respectively correspond to the plurality of blocking rods (330) one by one. A sliding block inserted into the limiting groove (210) is provided on the blocking rod (330).

4. A vortex-induced vibration suppression device applicable to water flows in multiple directions according to claim 3, Characterized in that: A plurality of limiting grooves (210) are provided on one side surface of each of the two limiting rings (200) opposite to each other. Sliding blocks inserted into the corresponding limiting grooves (210) are provided at both ends of the blocking rod (330).

5. A vortex-induced vibration suppression device applicable to water flows in multiple directions according to claim 3, Characterized in that: The connecting piece (320) is a bendable elastic rod. The diameter of the opening (311) is greater than or equal to twice the diameter of the elastic rod. One end of the elastic rod is fixedly connected to the blocking rod (330), and the other end is hinged to the pipeline (100).

6. A vortex-induced vibration suppression device applicable to water flows in multiple directions according to claim 3, Characterized in that: The connecting piece (320) is a flexible rope. Both ends of the flexible rope are respectively connected to the blocking rod (330) and the pipeline (100).

7. A vortex-induced vibration suppression device applicable to water flows in multiple directions according to claim 3, Characterized in that: The connecting member (320) is a rubber rod, and two ends of the rubber rod are fixedly connected to the blocking rod (330) and the pipeline (100) respectively.

8. An in-line flow-induced vibration suppression device applicable to water flows in multiple directions according to claim 1 or 2, characterized in that: the opening (311) is a strip-shaped through groove, an extending direction of the opening (311) is parallel to an extending direction of the sleeve (310), a strip-shaped protrusion is arranged on a side surface of the blocking rod (330) close to the corresponding opening (311), and the strip-shaped protrusion can be inserted into the corresponding opening (311).

9. An in-line flow-induced vibration suppression device applicable to water flows in multiple directions according to claim 1 or 2, characterized in that: the opening (311) comprises a plurality of through holes which are sequentially arranged along the extending direction of the sleeve (310), a plurality of circular protrusions are arranged on a side surface of the blocking rod (330) close to the corresponding opening (311), the plurality of circular protrusions correspond to the plurality of through holes one by one, and the circular protrusions can be inserted into the corresponding through holes.

10. An in-line flow-induced vibration suppression device applicable to water flows in multiple directions according to claim 1 or 2, characterized in that: a bevel is arranged at an edge of the opening (311) close to the blocking rod (330).

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