Comprehensive Control System for Mobile Pumping Apparatus
First Claim
1. A pumping apparatus comprising:
- an engine;
a primary pump driven by said engine, the primary pump including a supply side and a discharge side;
an intake system coupled to the supply side of the primary pump for delivering liquid thereto;
an inlet pressure sensor communicating with the intake system and producing a first signal proportional to the inlet pressure;
an intake pressure regulating system for maintaining the pressure of fluid in the intake system above a preset low inlet pressure PLOW;
a discharge system coupled to the discharge side of the primary pump for dispensing liquid therefrom;
a discharge pressure sensor communicating with the discharge system and producing a second signal proportional to the discharge pressure;
a discharge pressure regulating system for maintaining the pressure of fluid in the discharge system below a preset maximum discharge pressure PMAX; and
a master control system communicating with the intake and discharge pressure regulating systems for actuating said systems in response regulating systems in response to said first and second signals.
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Accused Products
Abstract
A control system for a pumping apparatus consisting of an engine-driven primary pump includes an intake pressure regulating system for maintaining the intake pressure above a preset low value, a discharge pressure regulating system for maintaining the discharge pressure below a preset maximum value, and a master controller for monitoring, recording, and controlling the intake and discharge pressure regulating systems and other components of the system. The discharge pressure regulating system includes a pump governor which varies the engine RPM and operates a relief valve in response to fluctuations in discharge pressure. The intake pressure regulating system includes a reserve tank that is automatically maintained at a preset level which determines the minimum intake pressure of the system. The system may also include a priming pump, foam tanks, foam pumps, bottled nonflammable gas, and an air compressor.
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Citations
10 Claims
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1. A pumping apparatus comprising:
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an engine; a primary pump driven by said engine, the primary pump including a supply side and a discharge side; an intake system coupled to the supply side of the primary pump for delivering liquid thereto; an inlet pressure sensor communicating with the intake system and producing a first signal proportional to the inlet pressure; an intake pressure regulating system for maintaining the pressure of fluid in the intake system above a preset low inlet pressure PLOW; a discharge system coupled to the discharge side of the primary pump for dispensing liquid therefrom; a discharge pressure sensor communicating with the discharge system and producing a second signal proportional to the discharge pressure; a discharge pressure regulating system for maintaining the pressure of fluid in the discharge system below a preset maximum discharge pressure PMAX; and a master control system communicating with the intake and discharge pressure regulating systems for actuating said systems in response regulating systems in response to said first and second signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification