Patent attributes
Such a gas turbine is provided as can put into practical use a control technology which detects clearance between the tip of rotating blade and the inner circumference surface of ring segment surrounding them and adjusts the temperature, the pressure and the flow volume of the cooling fluid for blade rings/ring segments and the cooling fluid for rotors based on the output. A sensor is provided to detect the clearance between the tip of the rotating blade and the inner circumference surface of the ring segment. A sensor is integrated together with a first guide pipe by having a posterior portion thereof screwed together to a secondary pipe being installed to an edge of the first guide pipe inside of which a cooling fluid is introduced into. The first guide pipe is pressed to the blade ring from the outside of the casing so as to retain. The sensor and the first guide pipe being integrated together by being screwed together will not be separated although they are subject to vibrations during operation of a gas turbine and can be pulled out and inserted from the outside of the casing in replacement.
