Safety device for subcritical pressure steam boilers

Details Safety device for subcritical pressure steam boilers Safety device for subcritical pressure steam boilers

1987-04-27

1989-02-07

Favors, Edward G.

Liquid heaters and vaporizers

Safety devices

Fire extinguishers

1224511, 122448S, 236 14, F22B 3742

Patent

active

048024465

ABSTRACT:
A safety device for subcritical natural and forced circulation boilers wherein the differential between downcomer fluid temperature and drum saturation temperature is measured and the trend of the differential is determined by computer means on a continuous basis. If the differential approaches a defined limit in its trend in a defined time interval or the furnace tube temperature increases instantaneously, the heat source for the boiler is diminished.

REFERENCES:
patent: 3310039 (1967-03-01), Holt
patent: 4497283 (1985-02-01), La Spisa et al.
patent: 4541365 (1985-09-01), Jennings et al.

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