Device for weakening piping system vibration caused by vortex shedding

Abstract

The invention discloses a device for weakening piping system vibration caused by vortex shedding. The device is a surfacing (5), and the surfacing (5) is welded to the position, close to the joint ofa main pipeline (1) and a branch pipeline (3), on a main pipeline tee joint (4) in the main pipeline (1). According to the design, surfacing is carried out on the upstream of the main pipeline tee joint, the flow direction of local fluid in the pipeline is changed through surfacing, so that vortexes formed by the fluid in the main pipeline tee joint are weakened, vortex fluctuation is restrained from being amplified in the branch pipeline due to audio frequency coupling, and vibration of a piping system is reduced. The design starts from weakening vortexes at the tee joint, suppresses the acoustic resonance phenomenon, reduces piping system vibration, eliminates overlarge stress or fatigue of the pipeline due to acoustic resonance, and improves the safety of the piping system.

Description

technical field [0001] The invention relates to the technical field of piping system vibration, in particular to the technical field of reducing the piping system vibration caused by vortex shedding. Background technique [0002] In electric power, chemical industry and military industry, etc., there is widespread vibration of fluid piping system, and the vibration itself is related to piping structure, fluid working conditions and operation mode. Part of the vibration can be considered in the design stage, but due to deviations in manufacturing and installation, some vibrations cannot be completely resolved in the design stage. There are also many ways to eliminate vibration, but due to the limitation of space and other factors, the methods to solve the vibration problem are also limited. Acoustic resonance is a resonance phenomenon caused by fluid-induced vibration and acoustic frequency coupling. It often occurs in main pipes with branch pipes. It can be avoided by chang...

AI Technical Summary

Problems solved by technology

Part of the vibration can be considered in the design stage, but due to the existence of manufacturing and installation deviations, some vibrations cannot be completely resolved in the design stage

There are also many ways to eliminate vibration, but due to space and other factors, the methods to solve vibration problems are also limited

Acoustic resonance is a resonance phenomenon caused by fluid-induced vibration and acoustic frequency coupling. It often occurs in main pipes with branch pipes. It can be avoided by changing the size and length of branch pipes. However, due to the limitation of tee manufacturing or layout space, branch pipes may It is not easy to modify

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