Sight tube assembly and sensing instrument for controlling a gas

Details Sight tube assembly and sensing instrument for controlling a gas Sight tube assembly and sensing instrument for controlling a gas

1985-05-02

1987-03-10

McGraw, Vincent P.

Optics: measuring and testing

Optical pyrometers

With sample engaging rod or tube

356 43, 374125, 374130, G01J 548, G01J 560

Patent

active

046487115

ABSTRACT:
A slight tube assembly, in combination with a sensing instrument, such as an optical pyrometer, for use in continuously monitoring the temperature of the first row of rotating blades in large gas turbines, particularly the type used in industry. Temperature data received by the pyrometer unit is fed to a control circuit, which regulates fuel input to the tubine to control the firing temperature. The key to obtaining reliable blade temperature data in the practice of this invention is the position of the sight tube in the turbine, which enables the pyrometer to "view" the rotating blades along a direct line of sight that penetrates a hot gas duct, but not the turbine section of the engine.

REFERENCES:
patent: 2576514 (1951-11-01), Bianco et al.
patent: 3436965 (1969-04-01), Land
patent: 4306835 (1981-12-01), Hurley
patent: 4411533 (1983-10-01), Loftus et al.
Curwen, "Turbine Blade Radiation Pyrometer System", Aircraft Engineering, vol. 44, No. 12, Dec. 1972, pp. 16-21.

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