Due to the characteristics of the process,the T202 kettle and the carbonization tank contain some crystalline salts in the bored.After a long time of operation,part of the crystalline salt causes the mechanical seal end face to wear,and the turbid liquid enters the pump body to accelerate the wear of the graphite bearing.Partially shielded pump has high pump body temperature,TRG display indicates that the motor insulation and current are normal.The shielded pump has higher requirements on the working flow.The outlet flow rate needs to be controlled above the minimum flow.If it is lower than the minimum flow,the rotor impeller is in the pump body.The material is repeatedly worked,the pump outlet opening is small,and the circulating fluid returned to the pump body by the pump outlet is limited,which can not effectively reduce the bearing temperature,and eventually the pump body temperature is high.
Treatment measures 1.The pump inlet and outlet lines are shielded to increase the tube holder to reduce the gravity applied to the pump body.2.Strengthen the management of circulating water or change the cooling water of the pump to the steam condensate tank,and the cooling coil and the jacket cooling water are connected in series to increase the water pressure;strengthen the process management,parameter control,and increase the auxiliary line of the pump inlet and outlet.Reduce the increase and decrease of the pump outlet flow to reduce the cavitation vibration caused by this cause,and reinforce the pump body
Anchor Bolts into four sets of
Bolts and tighten them at the same time.3,belonging to the selection problem,replaced with a common centrifugal pump,using a water-washed mechanical seal type centrifugal pump.4.The auxiliary line is added to the pump inlet and outlet.IV.Conclusion The above fault analysis and treatment measures are basically applicable to the failure of partially shielded pumps.Basically,the long-term operation of the shielded pump can be guaranteed,thereby reducing the maintenance cost of the equipment.It has good economic benefits.It can be seen that the daily maintenance management of the shielded pump is strengthened.The general fault bottleneck can be processed in a timely and effective manner to ensure the long-term smooth operation of the device.
