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    CONTROL DEVICE FOR PREVENTING VIBRATION OF ROTOR STAGE OF GAS TURBINE ENGINE
    1.
    发明专利
    CONTROL DEVICE FOR PREVENTING VIBRATION OF ROTOR STAGE OF GAS TURBINE ENGINE 失效

    公开(公告)号：JPH11141307A

    公开(公告)日：1999-05-25

    申请号：JP26099798

    申请日：1998-08-31

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： EL-AINI YEHIA M ,  BENEDICT BARRY K ,  BAGHDADI SAMY ,  MATHENY A PAUL

    IPC: F01D5/16 ,  F01D5/10 ,  F01D5/14 ,  F01D5/26 ,  F01D25/06 ,  F04D29/66 ,  F04D29/68

    Abstract: PROBLEM TO BE SOLVED: To provide a device which minimizes or eliminates vibration of a moving blade of a rotor stage of a gas turbine engine. SOLUTION: This device 20 has a high pressure gas source 48 and a plurality of holes 50 for distributing the high pressure gas. A rotor stage 34 is rotated by center gas streams 24 distributed in a circumferential direction, having first and second areas. The gas streams in the first and second areas, are flowed respectively with first and second velocities. The first velocity is actually faster than the second velocity. The holes 50 for distributing the high,pressure gas are selectively formed on an upstream side of the a moving blade, and aligned in the second area. The high pressure gas, flowed out of the holes 50, enter the second area. It is thus possible to increase velocity of center gas stream in the second area, while acutally reduce difference the velocities of the center gas streams between the first and second areas.

    HOLLOW BLADE HAVING INTERNAL DAMPER
    6.
    发明公开
    HOLLOW BLADE HAVING INTERNAL DAMPER 审中-公开
    HOHLSCHAUFEL MIT INTERNEM DEAMPFER

    公开(公告)号：EP3077625A4

    公开(公告)日：2017-01-25

    申请号：EP14867499

    申请日：2014-12-04

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： MORRIS ROBERT J ,  BENEDICT BARRY K

    IPC: F01D5/16 ,  F01D5/18

    CPC classification number: F01D5/16 ,  F01D5/147 ,  F05D2220/323 ,  F05D2240/30 ,  F05D2250/22 ,  F05D2250/23 ,  F05D2250/231 ,  F05D2260/96 ,  Y02T50/672

    Abstract: A hollow blade of a gas turbine engine has a sacrificial elongated damper disposed slideably in a chamber for minimizing modes of vibration during operation. The chamber is defined between two opposing surfaces generally spanning radially outward from an axis of the engine and a face facing radially inward. The damper is constructed and arranged to make loaded contact with the face via a centrifugal force created by rotation of the engine.

    Abstract translation: 燃气涡轮发动机的中空叶片具有可滑动地设置在室中的牺牲细长阻尼器，用于使操作期间的振动模式最小化。 腔室被限定在两个相对的表面之间，通常从发动机的轴线径向向外并且面向径向向内的面。 阻尼器被构造和布置成通过由发动机的旋转产生的离心力而与面部加载接触。

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