Valve stem load monitoring system with means for monitoring chan

Details Valve stem load monitoring system with means for monitoring chan Valve stem load monitoring system with means for monitoring chan

1990-07-09

1992-05-12

Will, Thomas B.

Measuring and testing

Blower, pump, and hydraulic equipment

7386232, 7386263, G01M 1900

Patent

active

051116901

ABSTRACT:
A valve stem load monitoring system for determining the axial load on a valve stem of a valve assembly which includes distance measuring means for measuring elongation changes over a substantial portion of the entire length of the yoke whereby signals representative of the sensed elongation changes are generated, with the sensed elongation changes being proportional to the axial load on the valve stem. The distance measuring means is mounted on a portion of the valve assembly other than the yoke. Computation means may be connected to the distance measuring means for receiving the signal therefrom to determine the axial load on the valve stem based on elongation changes in the yoke. Temperature measuring means may be provided on the yoke for generating signals indicative of the temperature of the yoke which are transmitted to the computation means which compensates for any temperature changes in the yoke in determining the axial load on the valve stem.

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