High temperature probe

Details High temperature probe High temperature probe

1995-06-29

1997-09-02

Bennett, G. Bradley

Thermal measuring and testing

Temperature measurement

Combined with diverse art device

374208, G01K 108

Patent

active

056624182

ABSTRACT:
In a high temperature probe (10), in particular for use in the hot gas stream of a gas turbine at temperatures of up to 1200.degree. C., which high temperature probe (10) comprises a metallic probe tube (11) having an internal drilled hole (12, 13) running in the direction of the tube axis of the probe tube (11) and a measurement space arranged at the lower end, which measurement space is separated from the internal drilled hole (12, 13) by a constriction (16a, b) and is in contact with the surroundings of the probe tube (11), and which high temperature probe (10) furthermore comprises at least one thermocouple (31, 32) which is conducted downwards in an insulated manner in the internal drilled hole (12, 13) and through the constriction (16a, b) into the measurement space, a high accuracy at a low time constant is achieved by the measurement space being configured as a flow-through channel (15) for the hot gases to be measured, which channel is oriented at right angles to the direction of the tube axis and runs through the probe tube (11) with one internal width (W), and by the thermocouple (31, 32), of which there is at least one, being arranged with its connection point (47) within the flow-through channel (15).

REFERENCES:
patent: 4018624 (1977-04-01), Rizzolo
patent: 4467134 (1984-08-01), Pustell
patent: 4721534 (1988-01-01), Phillippi et al.
patent: 4865462 (1989-09-01), Broomfield
patent: 4987749 (1991-01-01), Baier
patent: 5161894 (1992-11-01), Bourigault
patent: 5180227 (1993-01-01), John et al.
patent: 5456761 (1995-10-01), Auger et al.
patent: 5520461 (1996-05-01), Curry et al.

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