Method of monitoring the condition of a motor operated valve sys

Details Method of monitoring the condition of a motor operated valve sys Method of monitoring the condition of a motor operated valve sys

1990-06-19

1993-08-31

Ruehl, Charles A.

Measuring and testing

Dynamometers

Responsive to torque

73168, 324158MG, G01M 1900, G01L 500, F16K 3700

Patent

active

052398749

ABSTRACT:
A method of evaluating degradations throughout a MOV (i.e. motor operated valve) by establishing specific interrelationships between a power related parameter from the MOV motor (being, for an AC motor, preferably the motor load; and being, for a DC motor, preferably motor torque or motor torque factor) and actuator torque; then utilizing the established interrelationships to further establish a given percent change in the power related parameter as a warning point; and, then, trending the power related parameter during valve-in-use operation of the valve system to evaluate the condition of the valve system.

REFERENCES:
patent: 4831873 (1989-05-01), Charbonneau et al.
patent: 4869102 (1989-09-01), Hale et al.
patent: 4888996 (1989-12-01), Rak et al.
patent: 4965513 (1990-10-01), Haynes et al.
patent: 5009075 (1991-04-01), Okoren
patent: 5029597 (1991-07-01), Leon

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