Pulsation air current vibration-damping arrangement

Abstract

The invention discloses a pulse air-flow damping device in the vibration damping and damageproof technique domain, which comprises the following parts: outer case, inside component and air-flow expansion space, wherein the inside component contains transition section and injector whose exit connects the air-flow expansion space between inside component and outer case; the cross-section shape of injector is periodic plane curve structure in space along the circle direction or quadrangle, triangle and regular polygon direction to extend arrangement, which is composed of straightway, arc segment or parabolic segment or hyperbolic segment or expansion segment; forming a closed plane curve in space; stretching the section shape along the axial direction of outer case; forming hollow channel with two end opening; the outlet of condenser sprays out through transition section and forms current direction vortex, extension vortex structure in the gas flow expansion space, which turns the pulse air-flow as stable air-flow.

Description

Technical field [0001] The invention belongs to the technical field of vibration damping and disaster prevention, and mainly relates to a pulsating airflow vibration damping device. Background technique [0002] The piping system is widely used in industrial production, especially in the petrochemical, electric power, and chemical industries. Usually, the vapor-liquid two-phase flow piping system, the pipeline with large pressure difference and the pulsating gas flow piping system will vibrate during operation, especially In the delivery piping system of reciprocating compressors. The working characteristic of the reciprocating compressor is that the suction and exhaust flow are periodic and / or intermittent, so it is inevitable to stimulate the air flow in the inlet and outlet piping of the compressor to be in a pulsating state. This phenomenon is called air pulsation. The flow parameters (such as pressure, velocity, density) of pulsating airflow change periodically with lo...

AI Technical Summary

Problems solved by technology

It is the best way to reduce the excitation force, that is, to reduce the vibration source. It is theoretically feasible, but the actual situation is that no effective solution has been found at home and abroad.

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