Method for testing a spring pack of a motor operated valve
AssigneeWisconsin Electric Power Company
InventorJeffrey J. Roberts
Life of this patent
Estimating the term…
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.
Claims9
A method for testing a valve operator, steps of the method comprising:
- attaching a testing device to the valve operator;
- operating the testing device to compress a spring pack within the valve operator;
- sensing the force applied to the testing device by the spring pack while the spring pack is being compressed;
- and
- sensing the displacement of the spring pack while the spring pack is being compressed.
A method for testing a valve operator, steps of the method comprising:
- attaching a testing device to the valve operator;
- compressing a spring pack of the valve operator with a moveable component of the testing device;
- measuring the force applied to the testing device by the spring pack while the spring pack is being compressed;
- and
- measuring the displacement of the moveable component while the spring pack is being compressed.
Dependencies are inferred from the claim text.