A pipeline magnetorheological damper based on active control

Abstract

The invention discloses a pipeline magnetorheological damper based on active control. The pipeline magnetorheological damper based on active control comprises an upper pipe clamp, a lower pipe clamp,a connecting plate, a cylinder cover, an upper cylinder body, a magnetism isolating cover, a piston, a hollow threaded pin, a supporting spring, a lower cylinder body, a diaphragm, a diaphragm pressure plate, a quick-change permanent magnet excitation coil, a magnetorheological damping liquid filled in the cylinder bodies, a connecting part and a sealing part. The pipeline magnetorheological damper based on active control is applied to pipeline vibration reduction of pumps and compressors. Compared with a passive magnetorheological damper, the active control magnetorheological damper is high in precision, wide in applicable place and good in damping effect. According to the magnetorheological damper, signals transmitted by a vibration sensor are transmitted to a control module, and then the amplified electric signals are transmitted to the permanent magnet excitation coil to change the magnetic field strength, so that the damping force generated by shearing and flowing is changed, andthe vibration reduction function of a pipeline is realized.

Description

Technical field: [0001] This patent relates to a pipeline damping device, in particular to a pipeline magnetorheological damper based on active control for vibration damping of high-temperature and high-pressure oil and gas pipelines in petroleum and petrochemical industries. Background technique: [0002] For equipment using pumps and compressors, especially the stability of pipelines conveying high-temperature, high-pressure, flammable and explosive media directly affects the normal production and operation of the entire equipment. The severe vibration of the pipeline will bury hidden dangers for the smooth operation of the compressor, and the reciprocating inertial force generated will cause fatigue damage to the local pipeline, causing pipeline rupture, medium leakage and other problems, causing a certain degree of harm to the safety of life and property. Therefore, pipeline vibration reduction is an important topic in petroleum and petrochemical high-temperature and hig...

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Problems solved by technology

[0003] In the prior art, magnetorheological dampers more or less have some defects. For example, the Chinese patent document with application number 201510418618.4 discloses a magnetorheological damper with adjustable damping. The magnetorheological damper in this solution is When adjusting the damping, the structure is too complicated and the accuracy is poor, and the damper needs to be adjusted many times under different working conditions, which is time-consuming and laborious

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