System for detecting tubing rupture in feedwater heaters of stea

Details System for detecting tubing rupture in feedwater heaters of stea System for detecting tubing rupture in feedwater heaters of stea

1985-05-09

1986-04-22

Husar, Stephen F.

Power plants

Motive fluid energized by externally applied heat

Having apparatus cleaning, sealing, lubricating, purging,...

60646, 60660, F01K 1900

Patent

active

045833699

ABSTRACT:
In a steam power plant, a system is provided for early detection of a rupture or extensive leak from the feedwater tubing in the feedwater heaters. The system senses the temperature and pressure in the steam space of each feedwater heater. A pressure rise followed by a temperature drop in the steam space of a feedwater heater is recognized as being caused by a rupture or extensive leak in the feedwater heater and in response to such occurrance, an alarm is activated and a power assisted check valve is closed in the extraction line feeding extraction steam from the turbine to the feedwater heater.

REFERENCES:
patent: 3135096 (1964-06-01), Schroedter
patent: 4003205 (1977-01-01), Matsumura
patent: 4020488 (1977-04-01), Martin et al.

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