Measuring and testing – Dynamometers – Responsive to torque
Patent
1993-12-03
1996-07-09
Chilcot, Richard
Measuring and testing
Dynamometers
Responsive to torque
73168, G01L 302
Patent
active
055334105
ABSTRACT:
Disclosed is apparatus and a system for measuring and monitoring the actual mechanical power being produced by an electric motor and measuring and monitoring the reactive torque acting on and the rotational speed of a drive shaft of the electric motor used to drive a valve actuator of a motor operated valve (MOV). The apparatus and system is comprised of a motor power measuring cell inserted between and bolted to the electric motor housing and to the valve actuator housing of commercial MOVs to provide continuous in-service valve and motor diagnostics. The motor power measuring cell is provided with a first measuring means for measuring the torque acting on the drive shaft and a second measuring means for measuring the rotational speed of the drive shaft.
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Chilcot Richard
Dougherty Elizabeth L.
Maire D. G.
Westinghouse Electric Corporation
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