Steam turbine

Details Steam turbine Steam turbine

2007-05-29

2007-05-29

Edgar, Richard A. (Department: 3745)

Rotary kinetic fluid motors or pumps

Selectively adjustable vane or working fluid control means

Upstream of runner

C137S613000

Reexamination Certificate

active

10979239

ABSTRACT:
The invention relates to a steam turbine comprising a valve arrangement for regulating the admission of live steam into the turbine consisting of two serially connected regulating valves. The two regulating valves enable a step-by-step separation of the live steam and ensure operational security in the case of a partial load operation of the turbine. Said valve arrangement is particularly suitable for steam turbines devoid of regulating steps in a fixed-pressure operation mode.

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“ABB Modular Reheat Steam Turbines”, ABB Power Generation, ABB Review No. 5/1990, HTGD 666 159, printed in Germany, Sep. 1994, pp. 3-10.

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