Pumps – Condition responsive control of pump drive motor – Having timer or delay means
Patent
1989-09-26
1991-07-02
Smith, Leonard E.
Pumps
Condition responsive control of pump drive motor
Having timer or delay means
417 36, 166 66, F04B 4900
Patent
active
050282123
ABSTRACT:
The present invention provides a method and apparatus for removing floating, substantially immiscible liquids such as hydrocarbons from containers or wells containing both floating liquids and water. In one aspect of the invention, a microprocessor control receives and processes input signals from a liquid sensor, an upper water interface sensor and a skim pump. The skim pump is located in the well proximate to the water interface. The liquid sensor is located proximate to the skim pump. The upper water interface sensor is located adjacent to and below the liquid sensor. The microprocessor control is initialized by setting certain parameters such as the initial conditions for pump output values. The microprocessor controls and operates the skim pump in response to the input signals so as to operate the skim pump in a manner responsive to the input signals.
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Brophey Robert W.
Kadwell Robert J.
Scheuermann David W.
Smith Leonard E.
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