Reasons and Damage of Multi - stage High Pressure Feed Water Pump idling

Multi-level high-pressure feed pump idling is a very dangerous behavior, will cause unnecessary impact, then why will the centrifugal pump empty, there will be what harm, how to deal with idling, first of all is sure that the seal will be damaged, Sealed flushing water normally open, this problem should be able to solve it?
 Multi-stage high-pressure feed pump idling reasons:
        1, the pump is not sufficient import media or water pressure is not enough, or pump inlet pipe blockage, or pump air inside the cavity is not exhausted;
        2, the pump idling, the impeller without contact or very little contact with the media, can not work effectively, the liquid can not be properly transported out, these are doing useless work;
        3, because there is no effective work, the motor load is very small, resulting in a small current, the impact of the motor will not have anything, the pump idling on the pump is really fatal;
        4, idling pump is easy to cavitation, the pump and the flow of parts caused damage;
        5, idle pump mechanical seal form or packing seal form of idle, will not get the liquid lubrication, resulting in dry grinding, and thus quickly damaged;
        6, idle pump rotor parts, the pump will be hot, no liquid cooling, by the role of thermal expansion and contraction of those small gap position (such as sealing ring) is easy to kill;
        7, idle multi-stage centrifugal pump balance plate no one of the lubrication, the balance plate will soon be burned to death.
        Multi-stage high-pressure water pump idling hazards:
        1, if it is packing seal, the filler will dry grinding, immediately burned;
        2, there is no balance between the balance plate and the balance between the hydraulic balance, the two will soon wear;
        3, idle start on the pump shaft damage is very large, it is easy to break the shaft;
        4, idling start on the pump bearing life greatly affected, easy to bad weather bearing, resulting in noise;
        5, frequent idle start easy to burn the motor;
        6, idling start on the impact of the pipeline is very large, easy to burst pipe.
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