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1.故障现象型号TYMC40×10A(Ⅱ)的多级卧式离心泵,比额定压力小很多且也不能稳压,泵的排量忽高忽低,无法正常排液。输送介质为原油(混合部分天然气)。用皮带钳转动联轴器盘车检查,感觉较灵活、平稳无卡阻。打开入口阀,关闭出口阀,点动试运转,电机旋转方向无误。用测速仪测得转速平均值为2895r/min,正常。让泵连续运转观察,泵出口压力表显示升到2500kPa即开始下降,远低于额定压力。用激光测温仪测量前后轴承温度65℃,用手背摸泵体感觉很烫,
1. Symptom Model TYMC40 × 10A (Ⅱ) multi-stage horizontal centrifugal pump, the rated pressure is much smaller and can not be regulated, the pump displacement suddenly high and low, can not be normal drainage. Transmission medium for the crude oil (mixed part of the natural gas). Use a belt clamp to turn the coupling disc drive inspection, feel more flexible, smooth without jamming. Open the inlet valve, close the outlet valve, and try to run the motor. The rotation direction of the motor is correct. Measured with a speedometer average speed of 2895r / min, normal. Pump continuous operation observed, the pump outlet pressure gauge showed that rose to 2500kPa began to decline, well below the rated pressure. Before and after the measurement with a laser thermometer bearing temperature 65 ℃, feel the pump with the hand back is very hot,