F - Mech Eng,Light,Heat,Weapons – 04 – B
Patent
F - Mech Eng,Light,Heat,Weapons
04
B
F04B 51/00 (2006.01) G01L 3/18 (2006.01) G08C 17/02 (2006.01)
Patent
CA 2309523
A sucker rod pump dynamometer has a movable signal device secured to and movable with the polish rod and which transmits a first signal and receives wireless signals. A fixed signal source receives the first signal and returns a wireless return signal. A controller directs the movable signal device to send the first signal and measures the elapsed time between its transmission and the receipt of the wireless return signal, be it a reflection of the first signal or an independent signal emitted by the fixed signal source. Preferably, the first signal is an infrared signal which instantaneously triggers the second signal device to return an ultrasound return signal; the reverse also being a preferred embodiment. If both the first and return signals are ultrasonic, then the second device introduces a built in delay to permit spurious reflections to dissipate. The controller calculates the polish rod position based upon the elapsed time and the speed of travel of the first and wireless return signals. Multiple calculated positions over time permit rod velocity to be determined. The controller further monitors the load on the polish rod. A data radio connected to the controller wirelessly transmits information regarding polish rod load and position from the controller to a remote computer.
Gunthorpe Gary E.
James Donald E.
Vyskocil Thomas A.
Diagnostic Engineering Inc.
Vyskocil Thomas A.
LandOfFree
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