CONTROL DEVICE AND METHOD FOR A QUICK-ACTING GATE VALVE OF A STEAM TURBINE

European Patent Office Patent

PATENT NO 2276935
APP PUB NO EP-2276935-A1
SERIAL NO

09749621

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Abstract

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A control device for a quick-closing valve of a steam turbine including a relief valve for reducing a hydraulic pressure opening the quick-closing valve, and a relief valve control valve arrangement having at least three valves which are hydraulically interconnected with the relief valve in such a way that the relief valve does not close the quick-closing valve unless at least two valves of the relief valve control valve arrangement are switched to a quick-closing position. The system includes a test control valve arrangement for selectively reducing and increasing the hydraulic pressure opening the quick-closing valve when the relief valve is closed.

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Patent Owner(s)

Patent OwnerAddress
MAN DIESEL & TURBO SEDESTADTBACHSTRASSE 1 AUGSBURG 86153

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Inventor(s)

Inventor Name Address
POTTEN CHRISTIAN 46562 VOERDE
HENNECKE HOLGER GERMANY

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