COOLED TURBINE NOZZLE AND NOZZLE SEGMENT
    106.
    发明公开

    公开(公告)号:EP3862537A1

    公开(公告)日:2021-08-11

    申请号:EP20461510.8

    申请日:2020-02-10

    Abstract: A turbine nozzle segment (1) for a gas turbine engine comprising an outer band (2) comprising a cooling air inlet (9), an inner band (3) comprising a first cooling air outlet (24), at least one nozzle airfoil (10) comprising a pressure sidewall (7), a suction sidewall (8), a leading edge (4) and a trailing edge (6), wherein the nozzle airfoil (10) comprises cooling bores (26) arranged within the trailing edge (6), a cooling flow passage (12) in fluid communication with the cooling air inlet (9) that delivers the cooling air into the cooling flow passage (12) as cooling air stream, a first integral rib (15) protruding from the inner band (3) for defining a first channel (18) and a second channel (19) within the cooling flow passage (12), a deflector (14) arranged at the end the first integral rib (15) and configured for dividing flow of the cooling air stream into a first cooling air stream and a second cooling air stream, wherein the first and second cooling air streams are first and second cooling air jet streams, wherein the deflector (14) is configured to deflect the first cooling air jet stream obliquely to the suction sidewall (8) in the first channel (18) of the cooling flow passage (12), and the first channel (18) is configured to transport the first cooling air jet stream along said first channel (18) in a swirly flow.

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