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    • 3. 发明专利
    • COOLING STRUCTURE BY STEAM OF COMBUSTOR
    • JPH10227229A
    • 1998-08-25
    • JP2770697
    • 1997-02-12
    • TOHOKU ELECTRIC POWER COMITSUBISHI HEAVY IND LTD
    • SATO MINORUKOBAYASHI YUICHIAKAGI KOICHIINADA MITSURU
    • F02C7/141F02C7/18F23M5/08F23R3/00F23R3/42
    • PROBLEM TO BE SOLVED: To enhance the cooling effect of a combustor, and reduce thermal stress, and also reduce the metal temperature of the combustor, by respectively arranging cooling steam supply openings in the inlet side and the outlet side of the combustion chamber of a steam cooling type gas turbine, and arranging a cooling steam exhaust opening in the center of this combustion chamber. SOLUTION: A plurality of cooling steam supply openings 4a, 4b arranged in the circumferential directions of the inlet side A being the upstream side of a combustion chamber 3 and the outlet side B being the downstream side thereof, are communicated with a plurality of cooling steam exhaust openings 5 arranged in the circumferential direction of the center part C of the combustion chamber 3 by being passed through the passage of the wall surface of the combustion chamber 3. This cooling structure is thusly formed that cooling steam supplied from the supply openings 4a, 4b arranged in parts to be exposed to high temperature, is recovered from the exhaust openings 5 of the center part C by being passed through the wall surface of the combustion chamber 3, and cooling is started from a part having high temperature, thereby heat exchange with cooling steam can be effectively favorably carried out. Then, this cooling steam is recovered from the exhaust openings 5 of the center part C by shortening a pass channel so that more than necessary raising of steam temperature can be suppressed.
    • 4. 发明专利
    • GAS TURBINE STATIONARY BLADE
    • JPH08189304A
    • 1996-07-23
    • JP187295
    • 1995-01-10
    • TOHOKU ELECTRIC POWER COMITSUBISHI HEAVY IND LTD
    • SATO MINORUKOBAYASHI YUICHIKAWAI HISATAKAAOKI SUNAOAKITA EIJI
    • F01D9/02
    • PURPOSE: To improve a material strength characteristic and to facilitate manufacture by connecting a blade part consisting of a unidirectional coagulated material growing a columnar crystal in the blade height direction and a shroud part consisting of a unidirectional coagulated material growing a columnar crystal orthogonal with the direction where thermal stress is the highest to each other. CONSTITUTION: A blade part 1 is cast of an Ni group alloy for unidirectional coagulation. Crystal grains (columnar crystal) are made to grow in the blade height direction, and the blade height direction is made to match with a direction where a Young's modulus of a unidirectional coagulated material is small (001). Additionally, an inside shroud part 2 is made to match with the direction where the Youngs's modulus is small (001) by growing the crystal grains (columnar crystal) in a direction where thermal stress becomes the maximum by the Ni group alloy for unidirectional coagulation in the same way. Furthermore, an outside shroud part 3 is manufactured of the unidirectional coagulated material in the same way as the inside shroud part 2. A fabricated frame structural type gas turbine stationary blade is manufactured by assembling the blade part 1, the inside shroud part 2 and the outside shroud part 3 and respectively connecting connecting parts 4, 4' with a blazing filler material.