Method and apparatus for monitoring temperature of blast furnace

Details Method and apparatus for monitoring temperature of blast furnace Method and apparatus for monitoring temperature of blast furnace

1993-05-18

1994-10-18

Cuchlinski, Jr., William A.

Thermal measuring and testing

Temperature measurement

Nonelectrical, nonmagnetic, or nonmechanical temperature...

374124, 374131, G01N 2165, G01J 510

Patent

active

053562208

ABSTRACT:
An optical fiber is laid in a spiral shape on a surface of an iron skin of a hot-air oven constituting a blast furnace facility, and one end of the optical fiber is connected to a temperature measuring apparatus. A temperature distribution of an optical fiber laid area is measured based on the intensity of Raman back scattering light of a light pulse transmitted into the optical fiber and based on a time interval until the Raman back scattering light returns to the transmission end of the optical fiber. The temperature distribution is displayed on a display screen to monitor the temperature distribution of the whole area of the iron skin of the hot-air oven to detect an abnormal condition thereof.

REFERENCES:
patent: 4508461 (1985-04-01), Lambert
patent: 4878226 (1989-10-01), McQuoid et al.
patent: 5028146 (1991-07-01), Wada
patent: 5178465 (1993-01-01), Amano et al.
patent: 5217306 (1993-06-01), Wada
"Raman Scattering Light Utilized Distribution Type Temperature Sensor" Sensor Technology, vol. 9, No. 7, May 1989.
"Fibre Loop Thermometry", Electronics & Wireless World, vol. 95, No. 1636, Feb. 1989, Surrey, Great Britain, pp. 170-172.
C. R. Batchellor, et al., "Some Recent Advances in Fibre-optic Sensors", Electronics & Communication Engineering Journal, vol. 2, No. 5, Oct. 1990, London, Great Britain, pp. 175-184.

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