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    51.
    发明专利
    未知

    公开(公告)号：TR23587A

    公开(公告)日：1990-04-19

    申请号：TR20390

    申请日：1990-03-07

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： SELLERS ROBERT R ,  SOECHTING FRIEDRICH O ,  HUBER FRANK W ,  AUXIER THOMAS A

    IPC: F01D5/18 ,  F01D11/10 ,  F02C ,  F01P

    Abstract: An axial flow turbine comprises a number of air cooled blades each of which have an airfoil surface exposed to the working medium defining a pressure side, a suction side, a root section, a tip section, and a mid chord section. Each blade having internal passages including at least one radial passage (26) defining a first feed channel adjacent the pressure side conducting cooling air from the root section to an outlet opening in the tip section, a number of radially spaced film cooling holes (28) in the airfoil surface being fed cool air from the feed channel, a second radial passage (32) defining a feed chamber in the mid chord section conducting cooling air from the root section to an orifice in the tip section, a number of radially spaced replenishment cooling holes communicating with the feed chamber for replenishing air in the feed channel whereby the rotation of the turbine centrifuges the air in the radial passages to increase the pressure of the cooling air as the air progresses toward the tip section of the blade.

    54.
    发明专利
    未知

    公开(公告)号：DE60025074D1

    公开(公告)日：2006-02-02

    申请号：DE60025074

    申请日：2000-06-23

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： AUXIER THOMAS A ,  KVASNAK WILLIAM S ,  DOWNS JAMES P ,  SOECHTING FRIEDRICH O ,  CALHOUN WILLIAM H ,  HAYES DOUGLAS A

    IPC: F01D5/18 ,  F01D9/02

    Abstract: A method and apparatus for cooling a wall within a gas turbine engine is provided which comprises the steps of: (1) providing a wall having an internal surface and an external surface; (2) providing a cooling microcircuit within the wall that has a passage for cooling air that extends between the internal surface and the external surface; and (3) increasing heat transfer from the wall to a fluid flow within the passage by increasing the average heat transfer coefficient per unit flow within the microcircuit. According to one aspect, the present invention method and apparatus can be tuned to substantially match the thermal profile of the wall at hand.

    56.
    发明专利
    未知

    公开(公告)号：DE69417375T2

    公开(公告)日：1999-11-04

    申请号：DE69417375

    申请日：1994-12-19

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： AUXIER THOMAS A

    IPC: F01D5/18 ,  F01D5/20 ,  F01D11/10 ,  F02C7/18 ,  F02C7/28

    Abstract: The airfoil of the rotor is solid or where coolant is unavailable or is available but not at sufficient quantity to provide passive clearance control. In this situation a judiciously located curved slot extending from the tip of the blade adjacent the pressure side and terminating at the pressure side at a location. There is sufficient static pressure so that the pressure drop across the slot induces a pumping action. There is sufficient coolant for tip cooling, the curved slot is judiciously located to be in communication with the film cooling hole discharging on the pressure side of the blade and the tip of the blade adjacent the pressure side of the blade.

    59.
    发明专利
    未知

    公开(公告)号：DE69417375D1

    公开(公告)日：1999-04-29

    申请号：DE69417375

    申请日：1994-12-19

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： AUXIER THOMAS A

    IPC: F01D5/18 ,  F01D5/20 ,  F01D11/10 ,  F02C7/18 ,  F02C7/28

    Abstract: The airfoil of the rotor is solid or where coolant is unavailable or is available but not at sufficient quantity to provide passive clearance control. In this situation a judiciously located curved slot extending from the tip of the blade adjacent the pressure side and terminating at the pressure side at a location. There is sufficient static pressure so that the pressure drop across the slot induces a pumping action. There is sufficient coolant for tip cooling, the curved slot is judiciously located to be in communication with the film cooling hole discharging on the pressure side of the blade and the tip of the blade adjacent the pressure side of the blade.

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