【Q&A No. 022】2018.01.22
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This post was last edited by liuquan1100 on 2018-1-22 at 14:29. [Q&A No. 022] 2018.01.22: What should be checked for pump equipment during normal operation? 1) Check the pump outlet pressure and flow rate according to the operating parameters ； 2) Bearing temperatures of the pump and motor ； 3) Is there any noise in the motor vibration? ； 4) Check for leaks in the mechanical seal and all connections ； 5) Cooling and lubrication conditions ； 6) Motor, current, and motor temperature rise ； 7) Oil level, seal oil, and flushing oil conditions ； 8) Standby status of the backup pump ； 9) The on/off status of the valve, etc. (Unless otherwise specified, all questions and answers are based on hydrogenation units.) ) Due to the limitations on the number of posts in the “One Question per Day” section, “One Image per Day” has been moved to the registered devices section; you can access it through the directory I posted. For management purposes, if you need to view content from a few days ago, please access it through the summary post below. 2018 Chemical Engineering Technology Training – Daily Question Summary Thread: https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=18889712018 Registered Equipment Section – Daily Image Summary Thread: https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1888970
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1) Electric motor: current, interlock activation status, outlet air temperature, bearing temperature, bearing vibration, operating sound, etc. Furthermore, there should be no strange odors, the grounding wire should be in good condition, and the foot screws should be firmly secured. (2) Pump: The outlet pressure should be normal; the packing should not heat up nor spill water, the operating noise should be normal, the cooling water for the bearing shells should flow smoothly, the drain tray should not be clogged, the oil level in the bearings should be normal, the oil quality should be good, the oil seals should be properly lubricated, and there should be no oil leaks. The backwheel cover should be securely fixed
What should be checked for pump equipment during normal operation? Answer: 1) Check the pump outlet pressure and flow rate according to the operating parameters ； 2) Bearing temperatures of the pump and motor ； 3) Is there any noise in the motor vibration? ； 4) Check for leaks in the mechanical seal and all connections ； 5) Cooling and lubrication conditions ； 6) Motor, current, and motor temperature rise ； 7) Oil level, seal oil, and flushing oil conditions ； 8) Standby status of the backup pump ； 9) The on/off status of the valve, etc.
1) Electric motor: current, interlock activation status, outlet air temperature, bearing temperature, bearing vibration, operating sound, etc. Furthermore, there should be no strange odors, the grounding wire should be in good condition, and the foot screws should be firmly secured. (2) Pump: The outlet pressure should be normal; the packing should not heat up nor spill water, the operating noise should be normal, the cooling water for the bearing shells should flow smoothly, the drain tray should not be clogged, the oil level in the bearings should be normal, the oil quality should be good, the oil seals should be properly lubricated, and there should be no oil leaks. The backwheel cover should be securely fixed
Answer: 1) Check the pump outlet pressure and flow rate according to the operating parameters； 2) Bearing temperatures of the pump and motor ； 3) Is there any noise in the motor vibration? ； 4) Check for leaks in the mechanical seal and all connections ； 5) Cooling and lubrication conditions ； 6) Motor, current, and motor temperature rise ； 7) Oil level, seal oil, and flushing oil conditions ； 8) Standby status of the backup pump ； 9) The on/off status of the valve, etc.
Bearing temperature, pressure, flow rate, leakage, vibration
1) Electric motor: current, interlock activation status, outlet air temperature, bearing temperature, bearing vibration, operating sound, etc. Furthermore, there should be no strange odors, the grounding wire should be in good condition, and the foot screws should be firmly secured. (2) Pump: The outlet pressure should be normal; the packing should not heat up nor spill water, the operating noise should be normal, the cooling water for the bearing shells should flow smoothly, the drain tray should not be clogged, the oil level in the bearings should be normal, the oil quality should be good, the oil seals should be properly lubricated, and there should be no oil leaks. The backwheel cover should be securely fixed
1. Check whether parameters such as the voltage and current of the drive motor, as well as the water output pressure of the water pump, are within normal ranges. If any abnormalities are detected, the cause must be investigated; if necessary, stop the pump for inspection. 2. Check the operating sound and vibration of the unit. 3. Check whether the packing gland is properly tightened, whether there is normal dripping, and whether the packing box is overheating. 4. Check whether the bearing is operating properly (oil temperature, oil level, oil quality), and look for any abnormal noises. 5. Check whether the temperature of the motor windings is normal and whether the temperature rise exceeds the allowable value. 6. Check whether there are any unusual odors in the pump room; if a burnt smell is detected, it is necessary to verify whether electrical equipment such as the motor is functioning properly, and the machine should be shut down for a thorough inspection if needed. 7. Pay attention to checking the water level in the tank to prevent the pump from running dry.
1. Motor operation status: motor temperature, motor bearings, motor fan, etc. 2. Pump inspection: pressure gauge, seal leakage, whether there are any misalignments or abnormal noises in the coupling, pump head temperature, whether the foot bolts are loose, etc； 3. Inspection of the pump’s bearings: bearing temperature, oil seal leakage, lubricant condition, etc
Electric motor: current, interlock activation status, outlet air temperature, bearing temperature, bearing vibration, operating noise, etc. In addition, there should be no unusual odors, the grounding wire should be in good condition, and the anchor bolts should be secure.
During normal operation, pump equipment should be checked for vibrations or abnormal noises in the pump body, whether the temperature of the motor and bearings is within normal limits, whether the foundation bolts are loose, and whether the outlet pressure is normal.