Patent ID: 7461544
Filing Date: 2008-12-09
Classification: F01D,Y10T

Abstract:
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.