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US 4,749,415 AGranted
Fast response thermocouple element
AssigneeWestinghouse Electric Corp.
InventorSerge P. Barton
Life of this patent
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Abstract
A thermocouple element (10) for use in high-pressure, high temperature fluid applications having a cylindrical body portion (12) formed from a first metal and a cap (14) formed from a dissimilar metal. The cap is fused to the body such that the junction (18) forms an axial thermocouple junction. A plurality of grooves (13, 20) is formed in the cap and body to reduce the mass of material adjacent the junction for rapid conduction heat transfer from the fluid being monitored.
Claims14
A stress resistive, heat sensitive thermocouple device for detecting temperature changes in a working fluid, said device comprising:
- an elongated body portion formed from a first metal and comprising a cylindrical wall surrounding a thermocouple lead receiving opening;
- a cap formed from a second metal, said first and second metals being dissimilar metals, said cap having a cylindrical skirt disposed over one end of the body portion;
- a thermocouple junction formed between an inner surface of the skirt and an outer surface of the body portion;
- heat transfer increasing means on the outer surface of the cylindrical wall adjacent said junction;
- and
- heat transfer increasing means on the outer surface of the cyindrical skirt adjacent said junction,
- said means on the cylindrical wall and said means on the cylindrical skirt each being arranged and adapted for directly contacting the working fluid.
4 more elements
Dependencies are inferred from the claim text.