PIPING STRUCTURE ABOUT RECIPROCATING PUMP

摘要

PROBLEM TO BE SOLVED: To operate a reciprocating pump continuously or without interruption even if the air quantity of a pressure tank drops, by replenishing the pump with air. SOLUTION: A pipeline 3 connected to the downstream side of a reciprocating pump P for force-feeding fluid is provided with a pressure tank 5 situated near the reciprocating pump P. The pressure tank 5 is provided with a contact-type pressure gauge 7 for detecting the pressure of an air chamber 6 defined in the pressure tank 5 and transmitting corresponding signals to a controller 8. At least a pipeline 2 connected up to the upstream side of the reciprocating pump P is provided with an air intake pipeline 15, in which a stop valve 17 is disposed in electrical connection with the controller 8 so as to open the pipeline 15 in accordance with the signals that the pressure gauge 7 outputs and lead air into the pipeline 15.