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离心压缩机的转轴振动测量一般都采用非接触式电涡流位移探头作为传感器,但是由于转轴的测振表面可能存在机械偏差(MR)和电气偏差(ER),就会产生非振动偏差的输出信号,给压缩机的运行监测、故障诊断和安全保护带来一定的困难。因此,在转子装入缸体之前,就必须对涡流探头测振轴表面进行非振动偏差的检查,然后再设法加以消除。要检查的转子应先经动平衡试验合格,轴颈去磁。转子可以在动平衡机、车床或置于带有四氟乙烯衬垫的 V 形铁上进行检查。在转轴测振部位,即涡流探头测振部位的中心线的两侧约10～15cm 处贴上标记带,并用一个带存储的示波器或数字电压表作为读数输出显示装置。测量时用一个非接触式的振动
Centrifugal compressor shaft vibration measurement are generally used non-contact eddy current displacement sensor as a sensor, but because of the shaft vibration measurement surface may be mechanical deviation (MR) and electrical deviation (ER), it will produce a non-vibration deviation of the output signal , To run the compressor monitoring, fault diagnosis and safety protection to bring some difficulties. Therefore, before the rotor is loaded into the cylinder, it is necessary to inspect the surface of the eddy current probe vibrating shaft for non-vibration deviation and then try to eliminate it. The rotor to be checked should pass the dynamic balancing test and the shaft should be demagnetized. The rotor can be inspected on a balancing machine, a lathe, or on a V-shaped iron with PTFE gaskets. Mark the band around 10-15 cm on both sides of the center line of the vibration measurement part of the rotating shaft, that is, the vibration measurement part of the vortex probe, and use a oscilloscope or digital voltmeter with storage as the reading output display device. Use a non-contact vibration measurement