Diagnosis method for detecting ageing symptoms in a steam...

Details Diagnosis method for detecting ageing symptoms in a steam... Diagnosis method for detecting ageing symptoms in a steam...

2005-06-28

2005-06-28

Larkin, Daniel S. (Department: 2856)

Measuring and testing

Instrument proving or calibrating

Volume of flow, speed of flow, volume rate of flow, or mass...

C073S001280, C073S112060, C702S034000, C702S050000, C702S113000, C702S182000, C702S183000

Reexamination Certificate

active

06910364

ABSTRACT:
A diagnosis method is for detecting ageing symptoms in a steam turbine. The efficiency and the steam flow rate of an aged steam turbine is compared to the efficiency and the steam flow rate of a relatively new steam turbine. The efficiency and the steam flow rate are calculated using readings at several operating points on the steam turbine. The time history of the efficiency and steam flow rates applied in contrast to parameters such as the peripheral. Mach number, pressure figure and adjustment of the inlet valve provide information on the extent of ageing of the steam turbine.

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