| 摘要 |
PROBLEM TO BE SOLVED: To control the supply of a flammable liquid at low cost. SOLUTION: The supply control device for the flammable liquid includes a pneumatic drive system pump P that delivers the flammable liquid stored in a tank T, a detection pipe 2 inserted in the tank T so as to be soaked in the flammable liquid in the tank T, and an air supply source 4 that drives the pump P and continuously supplies air whose pressure and quantity are sufficient to cause air to constantly leak from the leading end of the detection pipe 2. The supply control device also includes a diaphragm 11 interposed between the detection pipe 2 and air supply source 4, an opening/closing control valve 6 interposed between the air supply source 4 and pump P, a pressure detector S connected to the detection pipe 2 so as to detect air pressure in the detection pipe 2, and a control unit C that determines a quantity of remaining flammable liquid in the tank T based on the detection value of the pressure detector S and controls the actuation of the opening/closing valve 6 so as to close the valve 6 when the quantity of remaining flammable liquid has decreased to a set quantity or below. COPYRIGHT: (C)2007,JPO&INPIT
|
