Turbine trip system

Details Turbine trip system Turbine trip system

1976-12-20

1978-11-07

Ostrager, Allen M.

Power plants

Motive fluid energized by externally applied heat

Process of power production or system operation

60644, 60657, 415 17, 176 38, F01K 1302

Patent

active

041239091

ABSTRACT:
An improved high-water-level trip control for a steam turbine is disclosed. Instead of causing a trip of the turbine (or reactor) based merely on the water level in the steam generator, the present invention generates a trip command that is based on a function of more than one parameter. Such a function more accurately indicates the quantity of water droplets in the steam leaving the steam generator than a function of a single parameter does. In particular, it is disclosed to trip the turbine when the water level exceeds a variable reference that increases as steam velocity decreases; this takes into account the effect of steam velocity on the entrainment of water droplets by the steam.

REFERENCES:
patent: B557153 (1976-02-01), Wonn et al.
patent: 3247069 (1966-04-01), Powell et al.

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