Verification device capable of reducing pipeline flow-induced vibration

Abstract

The invention discloses a verification device capable of reducing flow-induced vibration of a pipeline. The verification device comprises a replaceable test section, a measurement system and a fluid conveying mechanism, the replaceable test section is a section of pipeline of which the inner wall is loaded with a super-hydrophobic surface, and the replaceable test section is connected with the fluid conveying mechanism; the fluid conveying mechanism is used for conveying fluid into the replaceable test section according to the determined fluid flowing working conditions; the measuring system is used for measuring flow-induced vibration parameters generated when fluid flows through the replaceable test section. The device is used for testing the influence of the pipeline loaded with the super-hydrophobic surface on the reduction of the flow-induced vibration of the pipeline, the super-hydrophobic surface capable of effectively reducing the flow-induced vibration is obtained in the early stage of pipeline design, and the pipeline is pre-designed according to the super-hydrophobic surface, so that a pipeline design scheme capable of effectively reducing the flow-induced vibration of the pipeline is obtained; and the pipeline engineering is more efficient and economical.

Description

technical field [0001] The invention relates to the technical field of fluid mechanics and vibration mechanics, in particular to a verification device capable of reducing the vibration caused by pipeline flow. Background technique [0002] The pipeline vibration caused by fluid flow is called flow-induced vibration, and the mechanisms that cause flow-induced vibration mainly include vortex-induced vibration, turbulent buffeting, fluid elastic instability and acoustic resonance (collectively referred to as the excitation frequency of fluid flow here). ). When the excitation frequency of the fluid flow in the pipeline is equal to or similar to the natural vibration frequency of the pipeline, the resonance of the pipeline will be caused. Because the resonance will amplify the tiny vibration, its harmfulness will increase. The natural vibration frequency of a pipe depends on the elastic modulus and density of the pipe material, while the excitation frequency of fluid flow varie...

AI Technical Summary

Problems solved by technology

However, the above method has defects, and it is necessary to propose a new method for pipeline flow-induced vibration and the corresponding pipeline

[0004] However, for the method of pipeline flow-induced vibration and the corresponding pipeline, the existing technology lacks effective means of experimental verification.

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