Cause Analysis and Solution of Excessive Vibration of Heat Pump Compressor in Hybrid Dehydrogenation Unit
The problem of vibration value exceeding the standard of heat pump compressor was analyzed in 300,000 t/a propane/isobutane hybrid dehydrogenation unit,then the spectrum analysis and simulation calculation were carried out.And the reasons were found,such as the insufficient rigidity of the supporting beam of pipeline at the inlet and the first-stage outlet of the heat pump compressor,the insufficient restraint force of the constant-force spring bracket on the pipeline in the horizontal direction,and change of propylene flow rate and direction in pipeline,etc.Then some improvements were made,such as building new steel frame,installing power pipe clip to replace constant force spring support,adding hydraulic damper rod and hydraulic damper,and replacing reinforced support beam.Finally,the stability of pipeline steel structure foundation has been effectively strengthened,the vibration of pipeline has been effectively controlled,and the vibration of inlet and outlet of heat pump compressor has been obviously improved,the maximum amplitude of pipeline vibration decreased from 5.4 mm to 1.16 mm,which eliminated the safety risk of the device and ensured the safe,stable and long period running period of the heat pump compressor.
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