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    IN-SITU WIRELESS MONITORING OF ENGINE BEARINGS
    1.
    发明申请
    IN-SITU WIRELESS MONITORING OF ENGINE BEARINGS 有权

    公开(公告)号：US20210131308A1

    公开(公告)日：2021-05-06

    申请号：US16673141

    申请日：2019-11-04

    Applicant: United Technologies Corporation

    Inventor： Zaffir A. Chaudhry ,  Goran Djuknic ,  Yan Chen

    IPC: F01D25/16 ,  F16C19/52

    Abstract: A bearing assembly monitoring system includes a bearing assembly supporting rotation of a rotating member. The bearing assembly includes a fixed portion and rotatable portion. A piezoelectric element is mounted to the fixed portion and generates an electric signal in response to a vibration of the fixed portion. A first transceiver is electrically coupled to the piezoelectric element to receive the electrical signal generated by the piezoelectric element and generate a signal indicative of the vibration of the fixed portion. A gas turbine engine bearing monitoring system and a method are also disclosed.

    SYSTEM AND METHOD FOR MONITORING GEAR AND BEARING HEALTH
    2.
    发明申请
    SYSTEM AND METHOD FOR MONITORING GEAR AND BEARING HEALTH 有权
    用于监测齿轮和轴承健康的系统和方法

    公开(公告)号：US20150369699A1

    公开(公告)日：2015-12-24

    申请号：US14737257

    申请日：2015-06-11

    Applicant: United Technologies Corporation

    Inventor： Yan Chen ,  Zaffir A. Chaudhry

    IPC: G01M13/04

    CPC classification number: G01M13/045 ,  G01M13/028

    Abstract: A method for monitoring a gear and bearing system having at least two inter-meshing gears and at least one bearing includes detecting gear and bearing vibrations with at least one vibration sensor operable to generate a signal representative of the detected gear vibrations. A carrier frequency is identified from the generated signal. A band pass filter is applied to the signal at the carrier frequency to create a filtered signal. An envelope is extracted from the filtered signal to create an extracted signal. A time-frequency analysis is then applied to the extracted signal which allows for identification of degradation of the gears.

    Abstract translation: 一种用于监测具有至少两个相互啮合的齿轮和至少一个轴承的齿轮和轴承系统的方法，包括用至少一个振动传感器检测齿轮和轴承振动，所述振动传感器可操作以产生表示检测到的齿轮振动的信号。 根据产生的信号识别载波频率。 带通滤波器以载波频率施加到信号以产生滤波信号。 从滤波的信号中提取包络线以产生提取的信号。 然后对提取的信号应用时间 - 频率分析，其允许识别齿轮的劣化。

    COMPRESSOR ABRADABLE MATERIAL SEAL WITH TAILORED WEAR RATIO AND DESIRABLE EROSION RESISTANCE
    3.
    发明申请
    COMPRESSOR ABRADABLE MATERIAL SEAL WITH TAILORED WEAR RATIO AND DESIRABLE EROSION RESISTANCE 审中-公开
    压缩机不可磨损的材料密封具有定制的磨损比和耐腐蚀性

    公开(公告)号：US20160186595A1

    公开(公告)日：2016-06-30

    申请号：US14862430

    申请日：2015-09-23

    Applicant: United Technologies Corporation

    Inventor： Christopher W. Strock ,  Changsheng Guo ,  Yan Chen

    IPC: F01D11/12 ,  F01D5/28 ,  C22C9/06 ,  C22C19/05 ,  C22C9/01 ,  C22C9/00 ,  F01D5/20 ,  F01D25/24

    CPC classification number: F01D11/122 ,  C22C9/00 ,  C22C9/01 ,  C22C9/06 ,  C22C19/055 ,  F05D2300/172 ,  Y02T50/672

    Abstract: What is described is a wear resistant seal system that is adapted for resisting wear of a rotating part in a gas turbine engine as it rotates against a stationary part in the engine. The system includes an axially rotable member including an abrasive tip having a first tensile strength. The system also includes a stationary structure radially exterior and adjacent to the rotable member and including an abradable material. The abradable material includes a matrix material having a second tensile strength that, at least in a first temperature range, is lower than the first tensile strength and a filler material interspersed with the matrix material.

    Abstract translation: 所描述的是一种耐磨密封系统，其适于抵抗燃气涡轮发动机中的旋转部件在其相对于发动机中的静止部件旋转时的磨损。 该系统包括轴向可旋转构件，其包括具有第一拉伸强度的研磨尖端。 该系统还包括径向外部并且与可旋转构件相邻并包括可磨损材料的固定结构。 可磨损材料包括具有至少在第一温度范围内低于第一拉伸强度的第二拉伸强度的矩阵材料和散布有基质材料的填充材料。

    ALUMINUM FAN BLADE TIP WITH THERMAL BARRIER
    4.
    发明申请
    ALUMINUM FAN BLADE TIP WITH THERMAL BARRIER 有权
    铝制风扇叶片带热障板

    公开(公告)号：US20160040538A1

    公开(公告)日：2016-02-11

    申请号：US14711237

    申请日：2015-05-13

    Applicant: United Technologies Corporation

    Inventor： Yan Chen ,  Changsheng Guo

    IPC: F01D5/28 ,  B05D7/14 ,  F01D5/14

    CPC classification number: F01D5/288 ,  B05D7/14 ,  F01D5/147 ,  F01D11/122 ,  F02K3/06 ,  F05D2230/90 ,  F05D2300/611

    Abstract: A fan blade for a gas turbine engine is described. The fan blade may comprise a body portion formed from a metallic material, and it may include a suction side, a pressure side, a leading edge, a trailing edge, and a tip. A coating may be applied to the tip, and the coating may have a thermal conductivity of no more than about 10 watt per meter kelvin. The coating may be a thermal barrier coating comprising yttria-stabilized zirconia.

    Abstract translation: 描述了用于燃气涡轮发动机的风扇叶片。 风扇叶片可以包括由金属材料形成的主体部分，并且其可以包括吸力侧，压力侧，前缘，后缘和尖端。 可以将涂层施加到尖端，并且涂层的热导率可以不超过约10瓦特/米尔开尔文。 涂层可以是包含氧化钇稳定的氧化锆的热障涂层。

    System and method for monitoring gear and bearing health
    10.
    发明授权
    System and method for monitoring gear and bearing health 有权

    公开(公告)号：US09841352B2

    公开(公告)日：2017-12-12

    申请号：US14737257

    申请日：2015-06-11

    Applicant: UNITED TECHNOLOGIES CORPORATION

    Inventor： Yan Chen ,  Zaffir A. Chaudhry

    IPC: G01M13/04 ,  G01M13/02

    CPC classification number: G01M13/045 ,  G01M13/028

    Abstract: A method for monitoring a gear and bearing system having at least two inter-meshing gears and at least one bearing includes detecting gear and bearing vibrations with at least one vibration sensor operable to generate a signal representative of the detected gear vibrations. A carrier frequency is identified from the generated signal. A band pass filter is applied to the signal at the carrier frequency to create a filtered signal. An envelope is extracted from the filtered signal to create an extracted signal. A time-frequency analysis is then applied to the extracted signal which allows for identification of degradation of the gears.

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