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1988年我厂加氢装置需要二台热水泵作为伴热设施用,流量40m~3/h,扬程60m,温度60～70℃。车间利用了现有的二台80Y-100离心油泵。投运二年来,电机超负荷运行,只得靠调整出口阀门控制,但电机电流达92A,超过额定值(78A),经常出现过载跳闸。经过查找原因,是此泵原用于输送汽油,现改为输送热水,比重增大了,泵量也较大。于是将叶轮按80Y-100A 切割,外径由290mm 减小到268mm,实测全开出口阀门的流量45m~3/h,扬程90m,电流41A,
In 1988, our hydrogenation plant required two hot water pumps as the heat tracing facilities with a flow rate of 40m 3 / h, a lift of 60m and a temperature of 60-70 ℃. The workshop used the existing two Taiwan 80Y-100 centrifugal pump. Put into operation two years, the motor overload operation, only by adjusting the outlet valve control, but the motor current up to 92A, exceeds the rated value (78A), often overload trip. After looking for reasons, this pump was originally used to transport gasoline, now transferred to hot water, the proportion increased, the pump is also larger. So the impeller 80Y-100A cut by the outer diameter reduced from 290mm to 268mm, the measured full-outlet valve flow 45m ~ 3 / h, lift 90m, current 41A,