Sliding joint assembly for two parts subjected to large mechanical and
thermal stresses
    1.
    发明授权
    Sliding joint assembly for two parts subjected to large mechanical and thermal stresses 失效
    两个承受较大机械和热应力的部件的滑动接头组件

    公开(公告)号:US5445469A

    公开(公告)日:1995-08-29

    申请号:US166918

    申请日:1993-12-15

    摘要: The sliding joint assembly for a first part and a second part having different expansion coefficients comprises a plurality of radially-acting spring blades connected firstly at first ends to the first part only in the vicinity of a contact interface, and secondly via second ends to the second part only in a zone that is axially remote from the contact interface, the contact interface constituting a sliding contact interface between the first and second parts while the second ends of the spring blades are connected to the second part by mechanical fasteners constituted by detachable screw-and-nut type assemblies provided with spring washers for damping forces exerted in the axial direction.

    摘要翻译: 用于具有不同膨胀系数的第一部分和第二部分的滑动关节组件包括多个径向作用的弹簧叶片,其首先在第一端部连接到仅在接触界面附近的第一部分,其次通过第二端连接到 第二部分仅在远离接触界面的区域中,接触界面构成第一和第二部分之间的滑动接触界面,而弹簧叶片的第二端通过由可拆卸螺钉构成的机械紧固件连接到第二部分 螺母型组件设有弹簧垫圈,用于沿轴向施加的阻尼力。

    Damping system for high frequency combustion instabilities in a
combustion chamber
    2.
    发明授权
    Damping system for high frequency combustion instabilities in a combustion chamber 失效
    用于燃烧室中高频燃烧不稳定性的阻尼系统

    公开(公告)号:US5353598A

    公开(公告)日:1994-10-11

    申请号:US993013

    申请日:1992-12-18

    摘要: The damping system comprises at least one resonant acoustic cavity disposed around the combustion chamber and having a shape and dimensions such that it functions simultaneously as a quarter-wave resonator and with tangential coupling the resonant acoustic cavity comprises:a) a main annular part whose half axial section has a very elongate shape with a width dimension "e" which is very small compared to its longitudinal dimension "L.sub.1 " which extends substantially parallel to the axis of symmetry of the combustion chamber, the mean radius "R" of the main annular part being close to the equivalent radius of modes of oscillation to be damped, and b) an annular coupling part which originates from the main annular part and which opens into the combustion chamber near to a longitudinal or radial pressure anti-node, the annular coupling part having a length "L.sub.2 " in a half axial section and a width dimension "h" very much less than the sum of the longitudinal dimension "L.sub.1 " of the main annular part and the length "L.sub.2 " of the annular coupling part.

    摘要翻译: 阻尼系统包括设置在燃烧室周围的至少一个谐振声腔,并且其形状和尺寸使得其作为四分之一波长谐振器同时工作,并且具有切向耦合,谐振声腔包括:a)主环形部分,其一半 轴向截面具有非常细长的形状,其宽度尺寸“e”与其基本上平行于燃烧室的对称轴延伸的纵向尺寸“L1”相比非常小,主环形的平均半径“R” 部分接近要阻尼的振荡模式的等效半径,以及b)环形耦合部分,其起始于主环形部分,并且通向靠近纵向或径向压力抗节点的燃烧室,环形耦合 在半轴部分具有长度“L2”的部分和宽度尺寸“h”非常小于主环形的纵向尺寸“L1”的总和 部分和环形联接部分的长度“L2”。