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在采用压力润滑的压缩机中,油泵的进出口油压差过高或过低,都属于不正常现象.当油泵压差很小时,压差继电器就会动作而切断电源,使压缩机停机.对于没有压差继电器的机组,要经常注意油泵的压差变化,这个压差等于油压表指示值减去蒸发压力.经验证明:油压差维持在(1.47~2.94)× 10~5帕范围内,可以保证各摩擦面得到必要的润滑油量.当油压差出现过高或过低的现象时,应立即进行检查,先查外部管路系统,然后调整油压调节阀,若调整无效,就要检查机内油路.
In the pressure lubrication of the compressor, the import and export of oil pump hydraulic pressure is too high or too low, are not normal phenomenon.When the pump pressure is small, the differential relay will act to cut off the power, the compressor downtime. For units with no differential pressure relay, always pay attention to the pump differential pressure change, which is equal to the indication of the hydraulic gauge minus the evaporation pressure.Experience has shown that: the hydraulic pressure difference is maintained at (1.47 ~ 2.94) × 10 ~ 5Pa range , You can ensure that the friction surface to get the necessary amount of oil.When the oil pressure difference appears too high or too low, you should immediately check, check the external piping system, and then adjust the hydraulic control valve, if the adjustment is invalid , It is necessary to check the machine oil circuit.