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    • 10. 发明专利
    • GAS TURBINE COMBUSTOR COOLING STRUCTURE AND GAS TURBINE
    • JP2003214185A
    • 2003-07-30
    • JP2002012825
    • 2002-01-22
    • MITSUBISHI HEAVY IND LTD
    • AOYAMA KUNIAKI
    • F02C7/18F02C5/10
    • PROBLEM TO BE SOLVED: To provide a gas turbine combustor cooling structure capable of damping the pressure fluctuation in a combustor, reducing the use of cooling air, and efficiently cooling a wall member of the combustor, and to provide a gas turbine applying the same. SOLUTION: This gas turbine combustor cooling structure has a double wall part wherein a cavity is formed by covering a cooling air side of the wall member partitioning a gas turbine combustor into a cooling air side and a high-temperature gas side, with a cover, an impingement cooling hole is formed on the cover, and the wall member of the double wall part is provided with a sound absorbing hole communicating the high-temperature gas side and the cavity. A vapor cooling passage for allowing the cooling vapor to pass in the wall member is formed in a state of bypassing the sound absorbing hole, whereby the inflow air quantity to the high-temperature gas side can be determined small while damping the combusting vibration by the cavity, and a problem on high temperature generated in a single wall part can be solved. COPYRIGHT: (C)2003,JPO