full level detecting method of the water supply pump and the water supply pump

摘要

PROBLEM TO BE SOLVED: To provide a feed-water pump and a full water level detecting method of the feed-water pump capable of properly judging whether an internal part of a pump body arrives at a full water level when performing the priming water even in the case of pumping up sea water, lake water or the like.;SOLUTION: A feed-water pump which pumps up water from a water storage body and feeds the water to an external part comprises: a pump body; a water suction pipe through which the water is pumped up into the pump body from the water storage body; an air intake pipe which sucks and evacuates the internal part of the pump body; and a service water feed pipe which feeds the water to the external part from the internal part of the pump body. Therein, an air intake port as a connection part between the pump body and the air intake pipe is located above the pump body, a water suction port as a connection part between the pump body and the water suction pipe is located under the pump body and is provided with a means for measuring a differential pressure between a pressure in the air intake pipe and a pressure in the water suction pipe and can detect that the internal part of the pump body becomes full of water in the pump body from circumstances of fluctuation of the differential pressure when performing the priming water before operation of the feed-water pump.;COPYRIGHT: (C)2014,JPO&INPIT