A method and apparatus for shutting down a pumpjack

Details A method and apparatus for shutting down a pumpjack A method and apparatus for shutting down a pumpjack

F - Mech Eng,Light,Heat,Weapons

04

B

F04B 49/02 (2006.01) F04B 47/02 (2006.01) F04B 53/04 (2006.01)

Patent

CA 2361350

A method and apparatus for shutting down a pumpjack. A first step involves securing a liquid trap above packing of a wellhead stuffing box through which a sucker rod for the pumpjack passes, such that as liquid leaks past the packing it becomes trapped in the liquid trap. A second step involves providing a switch that is activated by an accumulation of liquid within the liquid trap. A third step involves a circuit that connects to the switch and is adapted for connection to a drive system for the pumpjack. Activation of the switch by an accumulation of liquid within the liquid trap shuts down the pumpjack.

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