AY系列多級離心油泵_圖文

1、 AY SERIES MULTI-STAGE OIL CENTRIFUGAL PUMP FAILURES CAUSES AND TROBLEXHOOTING Vibration and Noise by Pump Too Much Power Consumed Insufficient Flow Lift Not Liquid Output by Pump Too Much Leakage from Stuffing Box Heating of Stuffing Box Pump Overheating and Not being Able to Revolve Heating and Ab

2、rasion of Bearing 6 Table6 Possible Causes Gas existing inside pump or suction pump Suction Lift going too high or pouring-in height not going high enough Pressure in suction pipe lower or close to vaporization pressure Gas leakage from suction pipe Transportation speed too high or too slow Wrong re

3、volution direction Device lift not in line with that of pump Density and viscosity of medium not in line with original design Operating vibration while rate of flow keeps low Carved shaft caused by pump shaft and prime mover not having uniform axis Bumping and rubbing in revolution positions Bearing

4、 damage Too much abrasion of sealing ring Too much abrasion of bearings or stuffing Stuffing not properly selected or mounted Vibration caused by unbalanced revolution positions Too much oil or too dirty in bearing box Off-center rotor caused by too much abrasion of bearing or sealing ring Miscellan

5、eous articles blocked inside pump or pipeline Improper sealing hydraulic pressure Stuffing gland going too loose or tight failure Troubleshooting Refilling pump to expel gas Lowering standard height to reduce resistance of suction pipe and increase inlet pressure Boost pressure Checking and fastenin

6、g Stipulating as instruction says Pump is revolving counterclockwise on shaft coupling side Trying to lower resistance of vane wheel Carrying out calculating bypass circulating pipe Correcting <50oC/h Correcting bearing and heating speed floor heating equipment <50oC/h Replacing Replacing Repl

7、acing or polishing bearing sleeve Choosing and mounting as regulation says Carrying out inspection and eliminating it Replacing oil as regulation for oil indicator says Replacing and correcting Inspecting and cleaning 0.050.015MPa Pressure is 0.050.015Mpa higher than stuffing pressure Loosening or compressing tight 24 / PAGE AY SERIES MULTI-STAGE OIL CENTRIFUGAL PUMP OPERATION GUIDE 1 2 3 O O 1. Find breakdown happened in Breakdown Phenomenon Column; 2. Follow straight line to find places marked with O which are possible reasons and right are solutions; 3. If there ar