A self-adjusting magneto-rheological damper for pipeline vibration reduction

Abstract

The invention discloses a self-adjusting magnetorheological damper for vibration reduction of a pipeline. The self-adjusting magnetorheological damper for vibration reduction of the pipeline comprisesan upper pipe clamp, a lower pipe clamp, a piston rod, a cylinder cover, a damper cylinder body, a magnetic isolation cover, a spring upper pressing disc, a self-adjusting spring, a spring lower pressing disc, a permanent magnet, a magnetic isolation cover sealing cover, a magnetic isolation disc and magnetorheological damping fluid; the self-adjusting magnetorheological damper is applied to pipeline vibration reduction of petroleum and petrochemical industry, high temperature and high pressure, oil and gas transportation and inflammable and explosive media, and compared with an actively controlled magnetorheological damper and other self-adjusting magnetorheological dampers, the self-adjusting magnetorheological damper is simple in structure, convenient to disassemble and assemble, freeof complex threading and control parts, single in equipment fault point, convenient to maintain and capable of saving cost. According to Newton's first law and Hooke's law, the permanent magnet stretches and retracts in the closed magnetic isolation cover along with the vibration of the pipeline, the magnetic induction intensity exposed from the magnetic isolation cover is different due to different volumes of the permanent magnet exposed out of the magnetic isolation cover, the damping size of the magnetorheological damper is changed, and the vibration reduction function of the pipeline is realized.

Description

Technical field: [0001] This patent relates to a device used for pipeline vibration reduction, in particular to a self-regulating magneto-rheological damper for pipeline vibration reduction of high-temperature and high-pressure oil and gas pipelines in petroleum and petrochemical industries. Background technique: [0002] For devices that use pumps and compressors, especially those that transport high temperature and high pressure, inflammable and explosive devices, the stability of pipelines directly affects the normal production and operation of the entire device. 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 part of the pipeline, causing problems such as pipeline rupture and medium leakage. The additional thrust generated by the vibration will cause equipment damage, affect the safety production and economic benefits of the ente...

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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 201710513449.1 discloses a magnetorheological damper with adjustable damping. The magnetorheological damper in this scheme is mechanically The structure and installation are relatively complicated, and the precision requirements are high, and when adjusting the damper damping, it is easy to cause the adjustment knob to be stuck and other faults

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