Measuring and testing – Blower – pump – and hydraulic equipment
Patent
1983-07-19
1985-09-24
Levy, Stewart J.
Measuring and testing
Blower, pump, and hydraulic equipment
137552, 7386227, 7386232, G01M 1900
Patent
active
045426490
ABSTRACT:
A means of measuring the operating characteristics of a valve and its operator (16) and the corresponding imposed valve stem load is attached to the valve operator. The device provides a means of statically calibrating the operator relative to the imposed valve load and provides the means for recording traces of the imposed load and associated parameters and during dynamic conditions as related to the operation of the operator and valve combined. The device provides initial dynamic traces after initial assembly, maintenance and/or periodic testing of the operator and valve. The device is then used to provide diagnostic dynamic traces at any specified time in the future for the operator and valve. These future traces are used to compare with earlier traces to verify correct performance and most importantly to detect induced or impending damage, malfunctions, or maintenance requirements for the operator and valve.
REFERENCES:
patent: 1734419 (1929-11-01), Chitty
patent: 1908763 (1933-05-01), Kelty
patent: 1979340 (1934-11-01), Norman
patent: 2007658 (1935-07-01), Parish
patent: 2155674 (1939-04-01), Morgan et al.
patent: 4085624 (1978-04-01), Nomura
patent: 4193720 (1980-03-01), Mochida
patent: 4194393 (1980-03-01), Boley
patent: 4261224 (1981-04-01), Sulzer
patent: 4435979 (1984-03-01), Gilgore
patent: 4454504 (1984-06-01), Jolz
"Electronic Torque Monitoring for Valve Drives"; Sulzer Technical Review; Apr. 1978; vol. 60; pp. 169-171; F. Konig.
Charbonneau Arthur G.
Godfrey Dwaine A.
McNennamy John A.
Nafziger Steven
Charbonneau and Godfrey Associates
Isaf Louis T.
Levy Stewart J.
Noland Tom
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