Method and apparatus for corrosion sensing
AssigneeGeneral Electric Company
InventorsAndrew Philip Shapiro, Roger Warren Haskell
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Abstract
A corrosion sensor for use within a fluid flow path includes a sensing element and circuitry coupled to the sensing element for detecting corrosion of the sensing element. Another embodiment of a corrosion sensor for use within a fluid flow path comprises a hermetic housing, a sensing element attached to an external portion of the housing for exposure to the fluid flow path, and circuitry disposed within said hermetic housing, which circuitry is coupled to the sensing element for detecting corrosion of the sensing element.
Claims36
A corrosion sensor for use within a fluid flow path comprising:
- a sensing element;
- and
- circuitry coupled to said sensing element for detecting corrosion of said sensing element.
A corrosion sensor for use within a fluid flow path comprising:
- a hermetic housing;
- a sensing element attached to an external portion of said housing for exposure to said fluid flow path;
- and
- circuitry disposed within said hermetic housing which circuitry is coupled to said sensing element for detecting corrosion of said sensing element.
A corrosion sensor for use within a fluid flow path comprising:
- a wire sensing element;
- and
- circuitry coupled to said wire sensing element for generating an electrical current through said wire sensing element and for detecting interruption of electrical continuity through said wire sensing element upon corrosive failure of said wire sensing element.
A turbine assembly having a fluid flow path comprising:
- a compressor;
- a combustor;
- an exhaust;
- a corrosion sensor for use within said fluid flow path comprising:
- a sensing element;
- and
- circuitry coupled to said sensing element for detecting corrosion of said sensing element.
A method of detecting corrosion in a fluid flow path, said method comprising the steps of:
- heating a sensor element of a known thickness to a predetermined temperature;
- imposing an oscillating electric filed on said sensor element at said predetermined temperature;
- measuring at least one of an impedance or resistivity of said sensor element;
- exposing said sensor element to a potentially corrosive fluid flow;
- and
- measuring the change in the at least one of said impedance or said resistivity of said sensor element.
Dependencies are inferred from the claim text.