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    • 3. 发明公开
    • VANE FOR GAS TURBINE
    • GASTURBINENSCHAUFEL
    • EP0805263A4
    • 1999-10-20
    • EP96938510
    • 1996-11-20
    • MITSUBISHI HEAVY IND LTD
    • AOYAMA KUNIAKITERAZAKI MASAO
    • F01D5/18F02C7/18
    • F01D5/186F05D2260/202
    • Shower head cooling in film cooling for vanes of a gas turbine has a drawback that since the cooling holes are arranged linearly from the tip side to the hub side, the pressures at the respective cooling holes are different from one another in association with the swirl and so film cooling cannot be uniformly effected. Such drawback being removed, the pressures at all the cooling holes are uniform and the film cooling is also uniform. A plurality of shower head cooling holes (1) made in the tip end of a vane (2) are so arranged differently as to be adapted to the swirl which revolves rightward in the combustor and the swirl revolves leftward. For the rightward swirl, the cooling holes are arranged on a line extending from the tip side (TS) where the line is curved to the left when viewed from the upstream side of the vane (2), to the hub side (HS) where the line is curved to the rightward when viewed from the upstream side of the vane (2). For the leftward swirl, the cooling holes are arranged on a line extending reversely to the above line. Thus the influence of the swirl is averted, the pressures are made constant at the respective cooling holes (1), and uniform cooling is achieved.
    • 用于燃气轮机叶片的膜冷却中的喷淋头冷却的缺点在于,由于冷却孔从尖端侧到轮毂侧线性地布置,所以各个冷却孔处的压力与涡流相关地彼此不同 所以薄膜冷却不能均匀地进行。 这种缺点被消除,所有冷却孔处的压力均匀并且薄膜冷却也是均匀的。 在叶片(2)的末端制成的多个喷头冷却孔(1)的布置方式不同,以适应在燃烧器中向右旋转的旋涡并且旋涡向左旋转。 对于向右旋转,当从叶片(2)的上游侧观察时,冷却孔布置在从线弯曲的尖端侧(TS)延伸到轮毂侧(HS)的左侧的线上 当从叶片(2)的上游侧观察时,该线向右弯曲。 对于向左漩涡,冷却孔布置在与上述线相反的线上。 因此避免了涡流的影响,在相应的冷却孔(1)处使压力恒定,并且实现均匀的冷却。
    • 5. 发明专利
    • DE69628818D1
    • 2003-07-31
    • DE69628818
    • 1996-11-20
    • MITSUBISHI HEAVY IND LTD
    • AOYAMA KUNIAKITERAZAKI MASAO
    • F01D5/18F02C7/18
    • Shower head cooling in film cooling for vanes of a gas turbine has a drawback that since the cooling holes are arranged linearly from the tip side to the hub side, the pressures at the respective cooling holes are different from one another in association with the swirl and so film cooling cannot be uniformly effected. Such drawback being removed, the pressures at all the cooling holes are uniform and the film cooling is also uniform. A plurality of shower head cooling holes (1) made in the tip end of a vane (2) are so arranged differently as to be adapted to the swirl which revolves rightward in the combustor and the swirl revolves leftward. For the rightward swirl, the cooling holes are arranged on a line extending from the tip side (TS) where the line is curved to the left when viewed from the upstream side of the vane (2), to the hub side (HS) where the line is curved to the rightward when viewed from the upstream side of the vane (2). For the leftward swirl, the cooling holes are arranged on a line extending reversely to the above line. Thus the influence of the swirl is averted, the pressures are made constant at the respective cooling holes (1), and uniform cooling is achieved.
    • 6. 发明专利
    • GAS TURBINE BLADE
    • CA2209851C
    • 2000-05-02
    • CA2209851
    • 1996-11-20
    • MITSUBISHI HEAVY IND LTD
    • AOYAMA KUNIAKITERAZAKI MASAO
    • F01D5/18F02C7/18
    • In shower head cooling out of a prior art film cooling of gas turbine blade, as cooling holes (1) are arrayed on a straight line toward blade hub side (HS) from blade tip side (TS), there occur different pressures at each position of the cooling holes (1) with result that uniform film cooling cannot be done. The present invention is to provide a gas turbine blade which dissolves said problem in the prior art and attains uniform pressure over the shower head cooling holes, so that uniform film cooling can be done. A plurality of shower head cooling holes (1) bored in blade leading edge portion are arranged on one line biased so as to correspond to a respective case where direction of swirling flow in combustor is clockwise or counter-clockwise; that is, on one line biased to the left hand side, seen from upstream, toward blade hub side (HS) from blade tip side (TS) in the former case or on one line biased to the reverse side in the latter case, thus avoiding influence of the swirling flow, pressure at each position of the cooling holes (1) is made constant, so that uniform cooling can be attained.
    • 10. 发明专利
    • COOLING STRUCTURE TO COOL PLATFORM FOR DRIVE BLADES OF GAS TURBINE
    • CA2230291A1
    • 1998-08-25
    • CA2230291
    • 1998-02-23
    • MITSUBISHI HEAVY IND LTD
    • TERAZAKI MASAOTOMITA YASUOKIAKITA EIJI
    • F01D5/08F01D5/18F01D5/30F02C7/18F01D25/12
    • A mechanism for cooling the platform for the drive blades of a gas turbine, which uses a simple configuration which will reliably cool the platform, the mechanism being constituted by cooling channels in the interior of the platform which open out from one of the cooling air channels for cooling the turbine blades and which exit the platform through the edge nearest the tail. In a preferred embodiment cooling channels 6a and 6b in platform 2 open out from the entrance to blade cooling channel 5a and travel from the head of the blade along the blade sides 3c and 3b and exit through the edge 3e near the tail of the blade. This structure diverts a portion of the cooling air 4a entering the blade 3 from the cooling channel in base 1 in order to cool platform 2. Alternatively or in addition, at least one of the following types of cooling passages may be provided: (a) cooling air channels 7, which extend from enclosed air space 11 below platform 2 to the upper surface of the platform; (b) convection cooling channels 8 which extend from the leading edge of the platform to the upper surface of the platform at the front or rear side of the blade, and/or (c) air channels 9 which extend on the rear of the turbine blade obliquely from the underside of the platform to the trailing edge of the platform. These various channels or combinations thereof constitute a cooking structure through which air can flow to cool a platform for the drive blades of a gas turbine in an efficient and effective manner.