SHIM FOR A TURBOMACHINE BLADE
    11.
    发明申请
    SHIM FOR A TURBOMACHINE BLADE 审中-公开
    一个涡轮叶片的SHIM

    公开(公告)号:US20090060745A1

    公开(公告)日:2009-03-05

    申请号:US12171736

    申请日:2008-07-11

    IPC分类号: F01D5/30

    摘要: A shim (20) for a turbomachine blade (14), the shim comprising two branches (20A) for coming against bearing surfaces (16A) of the blade rotor (16), and a base part (20B) interconnecting the branches. The shim presents, at least in its branches (20A), a multilayer structure having at least three layers (31, 32, 33) that are fastened to one another and superposed in the following order: a first layer (31) of a first material; a second layer (32) of a second material; and a third layer (33) of a third material that is optionally different from the first material, said first and third materials presenting respective first and third Young's moduluses of values E and E′ at any arbitrary operating temperature in the operating temperature range of the shim, and said second material presenting a second Young's modulus of value lying in the range E/20 to E/5 and in the range E′/20 to E′/5 at said operating temperature.

    摘要翻译: 一种用于涡轮机叶片(14)的垫片(20),所述垫片包括用于抵靠所述叶片转子(16)的轴承表面(16A)的两个分支(20A)和互连所述分支的基部(20B)。 至少在其分支(20A)中,垫片呈现出具有至少三层(31,32,33)的多层结构,它们彼此紧固并按以下顺序重叠:第一层(31),第一层 材料; 第二材料的第二层(32); 和可选地与第一材料不同的第三材料的第三层(33),所述第一和第三材料在任意工作温度下在第一和第三材料的工作温度范围内呈现值E和E'的相应的第一和第三杨氏模量 并且所述第二材料在所述工作温度下具有在E / 20至E / 5范围内且在E'/ 20至E'/ 5范围内的第二杨氏模量值。

    TURBOMACHINE ROTOR ASSEMBLY
    15.
    发明申请
    TURBOMACHINE ROTOR ASSEMBLY 审中-公开
    涡轮转子总成

    公开(公告)号:US20090016890A1

    公开(公告)日:2009-01-15

    申请号:US12171775

    申请日:2008-07-11

    IPC分类号: F01D5/02

    摘要: A turbomachine rotor assembly comprising: a rotor disk (2) presenting slots (4) in its outer periphery; blades (14) fastened via their roots (16) in said slot (4); and shims (20) mounted between the blade roots (16) and the disk (2), each shim (20) comprising two branches (20A) and a base part (20B) interconnecting the branches, each branch (20A) being disposed between the bearing surface (16A) of a blade root (16) and the corresponding bearing surface (22A) of the disk (2); each branch (20A) being made of a first material presenting a first Young's modulus of value E, at any operating temperature in the operating temperature range of the shim (20). The rotor assembly includes pads (40) adhering to the bearing surfaces (22A) of the disk and/or to the bearing surfaces (16A) of the blade root, the pads (40) being made of a second material presenting a second Young's modulus of value lying in the range E/20 to E/5 at said operating temperature.

    摘要翻译: 一种涡轮机转子组件,包括:转子盘(2),其外周具有槽(4); 通过其根部(16)固定在所述槽(4)中的叶片(14); 和安装在叶片根部(16)和盘片(2)之间的垫片(20),每个垫片(20)包括两个分支(20A)和互连分支的基部(20B),每个分支(20A) 叶片根部(16)的轴承表面(16A)和盘(2)的对应支承表面(22A); 在所述垫片(20)的工作温度范围内的任何工作温度下,每个分支(20A)由具有值E的第一杨氏模量的第一材料制成。 转子组件包括粘附到盘的轴承表面(22A)和/或叶片根部的支承表面(16A)的垫(40),垫(40)由具有第二杨氏模量 的值在所述工作温度下在E / 20至E / 5的范围内。

    Method for reducing the vibration levels of a propeller of a turbine engine
    17.
    发明授权
    Method for reducing the vibration levels of a propeller of a turbine engine 有权
    一种用于降低涡轮发动机的螺旋桨的振动水平的方法

    公开(公告)号:US08398372B2

    公开(公告)日:2013-03-19

    申请号:US12548008

    申请日:2009-08-26

    IPC分类号: B63H5/10 B64C11/48 B64C27/10

    摘要: A method for reducing the vibration levels capable of occurring, in a turbine engine including at least one propeller and one coupling structure of the turbine engine, because of the turbulence of aerodynamic origin generated by the coupling structure on the propeller. The method includes: defining an initial configuration of the aerodynamic profiles, calculating the synchronous forced response on the propeller as a function of the force of harmonic excitation generated by the coupling structure expressed in the form of a linear function of the generalized aerodynamic force for the mode in question, and determining a tangential geometric offset value θ of the individual aerodynamic profiles for stacked sections of one of the propeller or of the coupling structure in order to reduce the term corresponding to the generalized aerodynamic force. The combination of the sections with the tangential offsets therefore defines a new configuration of the aerodynamic profiles.

    摘要翻译: 由于由螺旋桨上的联接结构产生的空气动力学起源的湍流,在涡轮发动机中减少能够发生的振动水平的方法,该涡轮发动机包括涡轮发动机的至少一个螺旋桨和一个联接结构。 该方法包括:定义空气动力学分布的初始配置,计算螺旋桨上的同步强制响应作为由耦合结构产生的谐波激励力的函数,该耦合结构以用于线性函数的广义气动力的线性函数的形式表示 模式,并确定切向几何偏移值&thetas; 的螺旋桨或耦合结构之一的堆叠部分的单个空气动力学轮廓,以便减少对应于广义气动力的项。 因此,切片与切向偏移的组合定义了空气动力学特性的新配置。

    Method for reducing vibration levels of a bladed wheel in a turbomachine
    18.
    发明授权
    Method for reducing vibration levels of a bladed wheel in a turbomachine 有权
    降低涡轮机叶片轮的振动水平的方法

    公开(公告)号:US08286347B2

    公开(公告)日:2012-10-16

    申请号:US12035966

    申请日:2008-02-22

    IPC分类号: B21K25/00 B23P15/04

    摘要: A method for reducing vibration levels in a turbomachine including at least a first and a second bladed wheel, due to aerodynamic perturbations that are produced by the second bladed wheel or an obstacle on the first bladed wheel is disclosed. The method includes: defining an initial configuration of the blades; calculating the synchronous forced response on the first bladed wheel as a function of the harmonic excitation force produced by the second bladed wheel expressed in the form of a linear function of the generalized aerodynamic force for the mode considered; determining a geometric tangential shift value θ for the stacked cross sections of one of the two wheels to reduce the corresponding term to the generalized aerodynamic force. The set of cross sections with the tangential shifts thus defines a new configuration of the blades of one of the two wheels.

    摘要翻译: 公开了一种用于减少包括至少第一和第二叶轮的涡轮机中的振动水平的方法,这是由于由第二叶轮产生的空气动力扰动或第一叶片轮上的障碍物。 该方法包括:定义刀片的初始配置; 根据所考虑的模式的广义气动力的线性函数的形式,计算第一叶片轮上的同步强制响应作为由第二叶片轮产生的谐波激励力的函数; 确定几何切向位移值& 对于两个车轮之一的堆叠横截面,将相应的术语减小到广义气动力。 因此,具有切向位移的一组横截面限定了两个轮之一的叶片的新构造。