Measuring and testing – Spring testing
Patent
1994-03-03
1995-07-25
Gutierrez, Diego F. F.
Measuring and testing
Spring testing
73168, 73790, 73791, G01L 104, G01D 710, G01N 308, G01N 326
Patent
active
054351774
ABSTRACT:
An apparatus, for testing a spring pack of a valve operator, includes 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.
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Gutierrez Diego F. F.
Wisconsin Electric Power Company
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