Broadband gas-liquid two-phase spring pulsation damper

Abstract

The invention discloses a broadband gas-liquid two-phase spring pulsation damper which comprises parts including an inlet end communication body, a sealing ring, a buffer cap, a body, a rubber spring or corrugated pipe spring, a flow passing net barrel, an outlet end communication body and the like. According to pulsatile fluid flowing through the inlet end of the broadband gas-liquid two-phase spring pulsation damper, fluid peak value kinetic energy is transmitted to the rubber spring or corrugated pipe spring in the body through end flanges of the buffer cap and the flow passing net barrel, and the rubber spring or corrugated pipe spring generates elastic deformation to absorb pulsation kinetic energy; and when a fluid peak value comes, the rubber spring or corrugated pipe spring releases stored energy and recover deformation. Through circulated reciprocation of the above process, fluid pressure pulsation is restrained. The broadband gas-liquid two-phase spring pulsation damper is suitable for fluid pulsation eliminating of liquid flow and gas flow within the 0-80Hz pulsation frequency range. The broadband gas-liquid two-phase spring pulsation damper has the obvious effects of being simple in device structure, small in size, light and high in bearing pressure compared with a traditional damper, and the pulsation eliminating rate is 95% or above.

Description

technical field [0001] The invention belongs to the technical field of hydraulic and pneumatic fluids, and relates to a broadband gas-liquid two-phase spring pulsation damper including gas, liquid and gas-liquid two-phase fluid. Background technique [0002] A fluid conveying device that includes pistons, plungers, diaphragms, gears or blades and other working parts that reciprocate or rotate in the pump body is alternately inhaled by periodically changing the volume of a single or several working chambers in the pump body. And the displacement of fluid, the change in volume will cause the pulsation of the delivered fluid. The fluid pulsation generated when the volumetric conveying equipment is working will not only cause the instantaneous flow imbalance of the fluid, but also cause the vibration and wear of the conveying pipeline, which will cause the failure and damage of the pipeline and the pipeline connection. In order to solve this problem, some devices such as diaphr...

AI Technical Summary

Problems solved by technology

The fluid pulsation generated during the operation of the volumetric conveying equipment will not only cause the instantaneous flow imbalance of the fluid, but also cause the vibration and wear of the conveying pipeline, and then cause the failure and damage of the pipeline and the pipeline connection.

In order to solve this problem, some devices such as diaphragm buffer tanks, hose buffers and piston buffers have been applied in engineering practice in this technical field. Defects such as short life, high replacement cost, and difficulty in withstanding high pressure; especially the above-mentioned diaphragm buffer tanks, hose buffers, and piston buffers absorb pulsation energy through the deformation of filling compressible gas, so they are only suitable for pulsation Applications with frequency less than 7Hz, because if the frequency is too high, the diaphragm, air bag or piston will not respond in time, and the effect of eliminating pulsation will not be achieved

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