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Vortex-induced vibration inhibition device

A suppression device and vortex-induced vibration technology, which is applied to mechanical equipment, drill pipes, drill pipes, etc., can solve problems such as harsh underwater environments and complex stress, achieve good connection stability, improve tensile capacity, and extend service life The effect of longevity

Inactive Publication Date: 2019-06-28
CHONGQING UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The underwater environment of the marine riser is harsh and the force is complex

Method used

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  • Vortex-induced vibration inhibition device
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  • Vortex-induced vibration inhibition device

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Embodiment Construction

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0024] see Figure 1-4 , the present invention provides a technical solution: a vortex-induced vibration suppression device, including a standpipe 1, an upper sleeve 2 and a lower sleeve 3, the upper end and the lower end of the standpipe 1 are thin tubes, and the upper end Between the upper end and the lower end is a thick tube, the upper sleeve 2 is installed on the outer wall of the upper end, the lower sleeve 3 is installed on the outer wall of the lower e...

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Abstract

The invention discloses a vortex-induced vibration inhibition device. The device comprises a vertical pipe, an upper sleeve, a lower sleeve and a plurality of flow disturbing plates, the upper end andlower end of the vertical pipe are thin pipes, and a thick pipe is formed between the upper end and the lower end; the upper sleeve is installed on the outer wall of the upper end, the lower sleeve is installed on the outer wall of the lower end, and the upper ends of the flow disturbing plates are connected with the outer side of the upper sleeve through locking screws; the lower ends of the flow disturbing plates are connected with the lower side of the lower sleeve through locking screws, several flow disturbing holes are uniformly distributed in the surface of each flow disturbing plate,the outer walls of the flow disturbing plates are sprayed with a wear-proof corrosion-resistant material, and the flow disturbing plates adopt arc flow disturbing plates. The device is novel in structure design, high in structure intensity, difficult to damage, long in service life and capable of achieving local jet flow on ocean currents and inhibiting vortex-induced vibration.

Description

technical field [0001] The invention relates to the technical field of vortex-induced vibration suppression, in particular to a vortex-induced vibration suppression device. Background technique [0002] From the point of view of fluid, any non-streamlined object will alternately generate vortices on both sides of the object that are separated from the surface of the structure under a certain constant flow rate. For structures with a cylindrical cross-section commonly used in marine engineering, the alternating vortex discharge will generate pulsating pressure on the cylinder that changes periodically along the flow direction and across the flow direction. If the cylinder is elastically supported at this time, or the flexible pipe is allowed to deform elastically, the pulsating fluid force will cause periodic vibration of the cylinder (tube), and this regular vibration of the cylinder will in turn change its The release form of the vortex of the wake. This fluid-structure i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B17/01E21B17/10C22C30/02C22C32/00F16L55/04
Inventor 张梦平李奇敏张治成赵祥凯
Owner CHONGQING UNIV
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