J&T

Corrosion-resistant centrifugal pump can be idle running? What will happen in time?

by:J&T     2020-06-19
Everyone knows corrosion-resistant centrifugal pump is generally not idle running, because generally corrosion-resistant centrifugal pump pump chamber without liquid storage chamber, is running short of vacuum pump cavity, must flow backward or drainage water vacuum pump cavity, to complete delivery. Centrifugal pump in practical applications, there is always a variety of conditions, when time phenomenon centrifugal pump fault one of the reasons, if corrosion-resistant centrifugal pump to occur? Centrifugal pump to accompany the situation, reasons and handling measures are summarized. After a, corrosion resistant centrifugal pump in time, or at the time of the phenomenon in the process of performance are: the pump after the time, using the rinse solution ( It is using pumping medium flushing) Mechanical seal of dynamic and static ring face lost its cooling and lubrication, dry friction, mechanical seal failure. Mechanical seal of pump body, vibration dynamic and static ring will continue to occur intermittent collision, lead to leakage, serious when mechanical seal failure; Mechanical seal pressure for static ring is medium pressure and the pre-tightening force sum of the spring, after the time, will be no media pressure, dynamic and static ring of the contact pressure will be smaller, seal failure. Corrosion-resistant centrifugal pump to the supplementary condition: motor current decline; A different acoustic noise; body vibrate; The pump cylinder temperature; Pressure fluctuations; Flow abnormal fluctuations. Second, corrosion-resistant centrifugal pump operation causes of time are as follows: 1, at the entrance of a centrifugal pump leakage, plugging, high pressure, medium temperature of saturated steam is too large, valve or valve core off or outlet opening is too big ( Small) 。 2, centrifugal pump seal oil with water, the motor reversal, within the impeller or grinding ring and serious. 3, centrifugal pump tower or container liquid level level low or no liquid level. Three, corrosion-resistant centrifugal water pump to solve processing method 1, and if the inlet pressure is not enough, should improve the liquid level back pressure. 2, if the impeller or wear rings, should be timely replacement. 3, if the motor reversal, should adjust to. 4, if the entrance to the medium temperature is exorbitant, should reduce the medium temperature, the centrifugal pump in steam vent line net. 5, if the entrance to a flat, should stop the pump check leakage of centrifugal pump inlet pipe and the flange. 6, if the access roads, should stop check leakage inlet pipeline centrifugal pump and impeller pump, after scavenging for maintenance. 7, if the inlet valve is not open, or falls off valve core, you should open the valve or pump for maintenance after the change. 8, if the outlet opening is too big ( Small) , should properly adjust the valve opening. 9, if the seal oil with water, dehydration treatment should be made for sealing oil tank. 10, if tower or container liquid level level is low, should be temporarily closed small centrifugal pump outlet valve or pump stop processing, liquid level rise after recovery.
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