Anti-settling magneto-rheological vibration absorber for high-pressure hydraulic pipeline system and working process of anti-settling magneto-rheological vibration absorber

Abstract

The invention provides an anti-settling magneto-rheological vibration absorber for a high-pressure hydraulic pipeline system and a working process thereof, the anti-settling magneto-rheological vibration absorber comprises an upper end cover, a lower end cover and a cylinder body, the upper end cover is connected with an external fluid system, and an internal space is formed between the cylinder body and the two end covers; a magnetorheological fluid damping mechanism is arranged in the internal space, divides the internal space into an oil liquid cavity, a high-pressure gas cavity and a magnetorheological fluid cavity, and comprises a sealed mushroom type piston, a sealed fixed piston, a porous damping block, a permanent magnet and a sealed piston plate; a sealing low-pressure gas containing cavity is further formed in the inner space, and the sealing piston plate can compress gas in the gas cavity under the action of the magnetorheological fluid cavity. A permanent magnet is arranged in the magnetorheological fluid cavity, and suspended magnetic conductive particles in the magnetorheological fluid can be kept in ordered arrangement for a long time in a magnetic field formed by the permanent magnet. A baffle ring is further arranged on the inner wall of the cylinder body and used for limiting the initial position of the sealed mushroom type piston. The damper is suitable for a high-pressure hydraulic pipeline system, and vibration and noise of the system can be greatly attenuated.

Description

technical field [0001] The invention relates to the technical field of vibration control of fluid mechanical devices and hydraulic pipeline systems, in particular, to an anti-subsidence magneto-rheological damper for high-pressure hydraulic pipeline systems and its working process. Background technique [0002] In recent years, with the development of hydraulic technology in the direction of high pressure, high speed, high power, durability, and high integration, the reliability of hydraulic piping systems has become more and more important. The high-pressure hydraulic system refers to the hydraulic pipeline system with the working pressure of the hydraulic system between 25-32 MPa (MPa). The vibration of the high-pressure hydraulic pipeline system during work is an important factor that causes pipeline fatigue damage. The vibration of the pipeline is mainly caused by the pulsation and fluid shock of the fluid in the hydraulic system. The fluid pulsation and fluid shock prod...

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Problems solved by technology

[0010] Most of the existing damping devices proposed above have good application effects only in low-pressure hydraulic systems, and cannot well absorb the technical problems of fluid pulsation and fluid shock in high-speed and high-pressure hydraulic pipeline systems, and provide a An anti-subsidence magneto-rheological shock absorber for high-pressure hydraulic pipeline system

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