Horizontal multi-stage centrifugal pump troubleshooting
Horizontal centrifugal pump in the power plant, construction, life has been widely used, with the development of industry and technological progress, single-stage centrifugal pump has gradually failed to meet the new process requirements, multi-stage centrifugal pump This situation began to rise. Horizontal multi-stage centrifugal pump in the event of failure, may lead to the entire production stopped, we must make the appropriate inspection and maintenance work. Horizontal multi-stage centrifugal pump horizontal multistage centrifugal pump failure causes and solutions 1, the pump is not absorbent, pressure gauge and vacuum gauge pointer violently beating. Solution: not enough water into the pump, water pipes and instruments leaking. Then into the pump, tighten the plug leak. 2, the pump does not absorb water, the vacuum gauge indicates a high degree of vacuum. Solution: the end of the valve did not open, or have been blocked, suction pipe resistance is too high, water absorption height is too high. Correct or change the end valve condition. Or change the suction pipe to reduce the water absorption height. 3, pressure gauge pressure, however, the pump is still not water. Solution: the outlet pipe resistance is too large, the rotation direction is wrong, the impeller is blocked. Pump not enough revolutions. Check or shorten the hose and check the motor. Remove the water pipe connector, cleaning the impeller to increase the number of revolutions of the pump shaft. 4, the flow below the design requirements. Solution: the pump is blocked. Sealing ring wear too much. Not enough revolutions. Clean the pump and pipe and replace the seal ring. Increase the pump shaft rotation. 5, the pump consumes too much power. Solution: packing gland is too tight. Stuffing box fever impeller wear. Pump water supply increased. Relax packing gland. Replace the impeller. Increase outlet pipe drag to reduce flow. 6, abnormal sound pump internal water pump. Solution: traffic is too large, the resistance of the suction pipe is too large, there is air infiltration at the water absorption. Aspirated liquid temperature is too high. Increase the water pipe resistance to reduce the flow, check the pump and water pipe. Check the end of the valve, reduce the height of water absorption, plug the leak, reduce the water absorption height. 7, pump vibration. Solution: The pump shaft and the motor are not on the same center line, or the pump bearing is bent. Align pump with motor shaft centerline. 8, bearing overheating. Solution: no oil, pump and motor shaft are not in the same center line. Fuel, align the shaft centerline, check or clean bearing body. Further Reading: pump valve pipe fittings Exhibition Water Expo Xiamen exhibition of marine equipment Internet + Forum Yiwu Fair 2016 exhibition mold top ten brands of the Internet information industry (Xiamen) Technology Co., Ltd. Author: Asian pumps Network Editor: Yao Xiaoxia (QQ / WeChat:) http://beng.liuti.cn/ (Service Hotline:)
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