| US 7,461,544 B2 | ||
| Methods for detecting water induction in steam turbines | ||
| Jitendra Kumar, Mableton, Ga. (US); Abhay S. Kant, Bangalore, Ind. (US); Vivek V. Badami, Schenectady, N.Y. (US); Peter J Elsenzopf, Altamont, N.Y. (US); and Nicholas Giannakopoulos, Acworth, Ga. (US) | ||
| Assigned to General Electric Company, Schenetady, N.Y. (US) | ||
| Filed on Feb. 24, 2006, as Appl. No. 11/307,822. | ||
| Prior Publication US 2007/0204452 A1, Sep. 06, 2007 | ||
| Int. Cl. G01M 15/00 (2006.01); F01K 13/02 (2006.01) | ||
| U.S. Cl. 73—112.02 [60/660] | 17 Claims |
| 1. A method of detecting water induction in a steam turbine, comprising the steps of:
measuring the temperature of one of the steam lines of the steam turbine;
determining, from the measured temperatures, whether there has been a drop in temperature followed by a rise in temperature
in the steam line;
determining whether the rate of change of the drop in temperature exceeded the rate of change of the subsequent rise in temperature;
determining that water induction is probable if there has been a drop in temperature followed by a rise in temperature in
the steam lines wherein the rate of change of the drop in temperature exceeded the rate of change of the rise in temperature;
determining if the steam turbine is operating at approximately 20% of its maximum power output; and
determining that water induction is not probable unless it is first determined that the steam turbine is operating at a minimum
of approximately 20% of its maximum power output.
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