Method for testing a spring pack of a motor operated valve

Details Method for testing a spring pack of a motor operated valve Method for testing a spring pack of a motor operated valve

1995-05-05

1996-12-03

Gutierrez, Diego F. F.

Measuring and testing

Blower, pump, and hydraulic equipment

73161, 73790, 73791, G01L 104, G01D 710, G01N 308, G01N 326

Patent

active

055796591

ABSTRACT:
A method and apparatus for testing a spring pack of a valve operator, the apparatus including a hollow housing with a coupling for attaching to the valve operator. A slider is received within the housing and moves therein when driven by a bolt that extends through a threaded aperture in the housing. A load sensor is attached to the slider and extends through the coupling and engages a valve operator component that is connected to the spring pack. As a technician turns the bolt, the apparatus compresses the spring pack within the valve operator and the load sensor produces an electrical signal that indicates how much force is exerted by the spring pack. At the same time, a transducer produces another electrical signal indicating the displacement of the spring pack.

REFERENCES:
patent: 2920482 (1960-01-01), Droke
patent: 3285065 (1966-11-01), Ragen et al.
patent: 3640129 (1972-02-01), Bandimere
patent: 3834228 (1974-09-01), Wachholz
patent: 4157033 (1979-06-01), Shereda et al.
patent: 4660416 (1987-04-01), Charbonneau et al.
patent: 4690003 (1987-09-01), McNennamy et al.
patent: 4860596 (1989-08-01), Charbonneau et al.
patent: 5167151 (1992-12-01), Hinant et al.
patent: 5168761 (1992-12-01), Hinant et al.

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