MECHANISM AND METHOD FOR REMOVING STEAM REMAINING IN STEAM COOLING PIPING OF GAS TURBINE

WIPO Patent Application WO/2007/066569

A1

A combustor (10) has steam cooling piping (11), and steam is caused to flow in steam supply piping (20), the steam cooling piping (11), steam discharge piping (70), in that order, to cool the combustor (10) by the steam. When a gas turbine is stopped, a piping system is set to a state where valves (V73, V71, V51, etc.) are closed to tightly close the piping (20, 11, 70), and then the valve (V71) is opened and vacuum is drawn by a condenser (90). After that the valve (V71) is closed, the valve (V51) is opened, nitrogen is loaded in the piping (20, 11, 70), and then the valve (V51) is closed. By this, remaining steam in the steam cooling piping (11) is reliably removed to replace it with the nitrogen. Accordingly, when the gas turbine is stopped, remaining steam can be reliably and quickly removed.

JPH076410	INDUSTRIAL APPLICABILITY A cooling method that provides an endothermic fuel system for a propulsion engine and a heat sink for cooling a high-speed aircraft.
JP2001041005	PIPING SUPPORT OF GAS TURBINE STEAM COOLED COMBUSTOR
WO/1993/024754	A GAS COMPRESSOR

MASAKI MORIHIKO (JP)

PCT/JP2006/323951

June 14, 2007

November 30, 2006

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MITSUBISHI HEAVY IND LTD (JP)
MASAKI MORIHIKO (JP)

F02C7/16; F01K23/10; F02C6/18; F02C7/18

JPH1193693A	1999-04-06
JPH1077806A	1998-03-24
JPH05163960A	1993-06-29
JP2003120328A	2003-04-23

MITSUISHI, Toshiro et al. (Akasaka 1-chome Minato-k, Tokyo 52, JP)

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