Device for suppressing vortex-induced vibration of marine riser

A vortex-induced vibration and marine technology, which is applied in the direction of drill pipe, casing, drilling equipment, etc., can solve the problems of poor suppression effect of vortex-induced vibration, and achieve the effect of suppressing vortex-induced vibration, low manufacturing cost and simple structure

Active Publication Date: 2020-02-14
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing devices for suppressing the vortex-induced vibration of the standpipe generally adopt a linear spring structure, which is not effective in suppressing the vortex-induced vibration

Method used

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  • Device for suppressing vortex-induced vibration of marine riser
  • Device for suppressing vortex-induced vibration of marine riser
  • Device for suppressing vortex-induced vibration of marine riser

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0023] It should be noted that, in the description of the present invention, the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer" and the like are based on the orientation or positional relationship shown in the drawings, and are only No limitation on the invention is to be construed for the convenience of describing the invention without requiring that the invention must be constructed and operated in a particular orientation.

[0024] Such as figure 1 As shown, a device for suppressing vortex-induced vibration of a marine riser includes a clamp 1, a support 3 and a damping mechanism capable of providing resistance; the support 3 is fixed on the ...

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Abstract

The invention discloses a device for suppressing vortex-induced vibration of a marine riser, and belongs to the technical field of ocean engineering. The device for suppressing the vortex-induced vibration of the marine riser comprises a clamp, a supporting seat fixed to a marine floating body and a vibration damping mechanism capable of providing resistance, the clamp is arranged on the outside of the marine riser, one end of the vibration damping mechanism is fixed to the supporting seat, the other end of the vibration damping mechanism directly faces the clamp, and spacing exists between the other end of the vibration damping mechanism and the clamp. The device for suppressing the vortex-induced vibration of the marine riser is simple in structure, convenient to install and good in vortex-induced vibration suppression effect.

Description

technical field [0001] The invention belongs to the technical field of ocean engineering, and in particular relates to a device for suppressing vortex-induced vibration of an ocean riser. Background technique [0002] The riser is a key part of the marine resource development system. In the actual working environment, the riser will undergo vortex-induced vibration under the action of flow load, causing fatigue or structural damage, so it must be suppressed. The riser connects the seabed and the floating structure on the water surface, and in addition to being subjected to hydrodynamic forces, it may also undergo a certain displacement along with the floating structure. Therefore, the vibration-damping bracket must allow a certain displacement at the top of the riser while suppressing the vortex-induced vibration of the standpipe. The existing devices for suppressing the vortex-induced vibration of the standpipe generally adopt a linear spring structure, which is not effect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B17/01E21B17/10
CPCE21B17/01E21B17/017E21B17/1078
Inventor 倪问池唐明昊胡琦凡张旭张蔚
Owner HOHAI UNIV
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