Flow-induced vibration test device for two-phase flow in inclined pipeline with fixed support fixture

Abstract

A flow-induced vibration test device for two-phase flow in an inclined pipeline with a fixed support fixture, including: a sequentially connected supply and return liquid system, a test pipeline system fixed by a fixed support fixture, a measurement system, and a data acquisition system; the supply and return liquid system Including: gas phase delivery pipeline and liquid phase delivery pipeline, wherein: the gas phase delivery pipeline and the liquid phase delivery pipeline mix the gas phase and the liquid phase uniformly through the gas-liquid mixer and transport them to the test pipeline system, and then the test pipeline system The liquid phase is transferred back to the liquid phase transfer line through the gas-liquid separator for reuse. The fixed support fixture provided by the present invention solves the problem of insufficient rigidity of the fixed support fixture in the flow-induced vibration test of the inclined pipeline. When the inclination angle and the diameter of the pipeline change, only part of the components are replaced, saving costs; it can absorb and attenuate the vibration of the supply and return liquid system, Avoid the coupling vibration between the liquid supply and return system and the inclined pipeline; by changing the opening and closing of the valve in the gas phase transmission pipeline, the interchangeability of the single-phase flow and two-phase flow-induced vibration test conditions of the inclined pipeline can be realized.

Description

technical field [0001] The invention relates to a technique in the field of pipeline engineering, in particular to a flow-induced vibration test device for two-phase flow in an inclined pipeline with a fixed support fixture. Background technique [0002] When a high-speed and high-pressure fluid flows in an inclined pipeline, the change of fluid velocity and pressure will cause the vibration of the pipeline, especially when there are two media in the pipeline, the velocity and pressure of the two-phase medium will change with the flow Vibration response caused by two-phase flow in the pipeline will be induced, which will cause fatigue damage to the pipeline, or even burst the pipeline, seriously affecting the reliability and safety of the pipeline and equipment; long-term pipeline vibration will cause the connection The breakage and falling off of the equipment may easily cause safety accidents and affect its working performance. At present, the existing two-phase flow test...

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Problems solved by technology

[0003] Aiming at the above-mentioned deficiencies in the prior art, the present invention proposes an inclined pipeline two-phase flow-induced vibration test device with fixed support fixtures, which solves the problem of insufficient rigidity of the fixed support fixtures in the flow-induced vibration test of inclined pipelines; The liquid return system vibrates to avoid the coupling vibration between the liquid supply and return system and the inclined pipeline; by changing the opening and closing of the valves in the gas phase delivery pipeline and the liquid phase delivery pipeline, the single-phase flow and two-phase flow flow-induced vibration tests of the inclined pipeline can be realized Conversion of working conditions; by replacing the clamping body, it can be used for flow-induced vibration test research on inclined pipes with different pipe diameters

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