Thermocouple for use in a hostile environment

Details Thermocouple for use in a hostile environment Thermocouple for use in a hostile environment

1987-06-11

1988-10-11

Yasich, Daniel M.

Thermal measuring and testing

Temperature measurement

Of molten metal

136234, 374125, 374141, 431121, G01K 108

Patent

active

047767057

ABSTRACT:
A thermocouple system for use in a high temperature reactor wherein a carbonaceous fuel is burned to produce a usable gas and a residual slag. The thermocouple is enclosed in a gas tight metal protection sheath which is inserted inside a multi-segment refractory thermowell. An annular space formed between the sheath and the thermowell is continuously purged with a minute quantity of a gas or a gaseous mixture. Gasification products from the residual slag, which are normally in a form that reacts with and destroys the thermocouple wires, are neutralized within the annular space by reaction with the purge gas mixture.

REFERENCES:
patent: 3080755 (1963-03-01), Percy
patent: 4324945 (1982-04-01), Sivyer
patent: 4435093 (1984-03-01), Krause et al.
patent: 4466808 (1986-06-01), Colls
patent: 4510343 (1985-04-01), Sivyer

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