Pumps – Expansible chamber type – Inlet and discharge distributors at opposite ends of tubular...
Patent
1988-06-23
1989-12-12
Croyle, Carlton R.
Pumps
Expansible chamber type
Inlet and discharge distributors at opposite ends of tubular...
91237, 91240, 91250, 92 90, F04B 4308
Patent
active
048864323
ABSTRACT:
A downhole bladder pump for pumping ligher-than-water liquids. The pump includes an outer tube closed at its bottom and top, but having slots adjacent its upper end to admit the liquid to be pumped. Positioned concentrically within the outer tube is a cylindrical bladder chamber. A cylindrical bladder is mounted within the bladder chamber and registers with the internal surface of such chamber. A cyclically-operated pneumatic control system periodically delivers pressurized air to the space between the bladder and the bladder chamber to collapse the bladder and pump liquid which has flowed into the bladder. At other times during the cycle, the control system draws the bladder outwardly against the internal surface of the bladder housing by the application of vacuum. The liquid to be pumped is then forced into the bladder through a check valve subassembly positioned in the lower end of the bladder housing. This liquid is next expressed or discharged through an upper check valve system located in the upper end of the bladder housing.
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Pulse Pump Pneumatic Pumping System by QED Environmental Systems, Inc.
Teflon Bladder Pump and Controller Manual, Modes Industrial Plastics, the Duriron Company, Inc.
Blackman Robert N.
Croyle Carlton R.
Engineering Enterprises Inc.
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