Method for determining the degree of wear of a valve, and apparatus for carrying out said method
OwnerWerner Zahlhaasinventor
Life of this patent
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Abstract
A method for determining the degree of wear of a valve, the degree of wear of the valve being dependent on the degree of wear of an operating element that is made of an expandable material and performs a mechanical movement each time the temperature changes, the change in temperature resulting in wear, the operating element made of an expandable material being mechanically connected to a piston; the movements of the operating element (3) made of an expandable material are calculated by initially sensing the change in temperature on the operating element (3), whereupon the changes in temperature are recalculated as movements on the basis of the temperature/expansion curve applicable to the operating element (3) made of an expandable material.
Claims8
A method for determining the degree of wear of a valve including an expandable material operating element that is present inside the valve, and a piston connected mechanically to the expandable material operating element, mechanical movements of the expandable material operating element leading to wear in the expandable material operating element, the method comprising:
- detecting changes in temperature of the expandable material operating element,
- converting the changes in temperature into movements by a certain distance of the expandable material operating element on the basis of a predetermined temperature/movement curve,
- determining a continuously updated value for a covered distance of the movements by continuously adding-up the absolute value of the distance of all the movements,
- calculating a degree of wear of the expandable material operating element from the value for the covered distance of the movements.
Dependencies are inferred from the claim text.