公开(公告)号：US5924845A

公开(公告)日：1999-07-20

申请号：US840109

申请日：1997-04-07

申请人： Ronald L. Bagley ,  Joseph J. Hollkamp ,  Robert W. Gordon

发明人： Ronald L. Bagley ,  Joseph J. Hollkamp ,  Robert W. Gordon

IPC分类号： F01D5/26 ,  F01D5/16

CPC分类号： F01D5/26 ,  Y02T50/671 ,  Y02T50/673 ,  Y10S416/50

摘要： A new apparatus and method for dynamically absorbing resonant vibration in jet engine blades and other rotating turbomachine components over all engine speeds is disclosed. A distributed pendulum (a pendulum having its axis of motion inside its body instead of at an end) is mounted inside a jet engine blade to function as a centrifugal pendulum. A centrifugal pendulum can be tuned so that its natural frequency linearly tracks the rotational speed of the engine or other turbomachine in which it is mounted and can absorb resonant vibrations from turbomachine components whenever the frequency of a source of vibratory excitation from a so-called speed line of the turbomachine coincides with a resonant frequency of the component. The equations of motion of a distributed pendulum are derived to show that a distributed pendulum small enough to fit inside a turbomachine component can be tuned to track a turbomachine speed line by adjusting its mass distribution about its axis of motion.

摘要翻译： 公开了一种用于在所有发动机速度下动态吸收喷气发动机叶片和其它旋转涡轮机组件中的共振振动的新装置和方法。 分布式摆锤（在其体内而不是端部具有其运动轴线的摆锤）安装在喷气发动机叶片内部，用作离心摆锤。 可以调节离心摆，使得其固有频率线性跟踪发动机或其它涡轮机的旋转速度，其中它安装在其中并且可以从涡轮机组件吸收共振振动，每当来自所谓速度的振动激励源的频率 涡轮机的线与部件的共振频率一致。 导出分布式摆的运动方程是为了表明小到足以装配在涡轮机组件内的分布式摆可以通过调整其在其运动轴线上的质量分布来跟踪涡轮机速度线。

公开(公告)号：US06827551B1

公开(公告)日：2004-12-07

申请号：US09498794

申请日：2000-02-01

申请人： Kirsten P. Duffy ,  Gerald V. Brown ,  Ronald L. Bagley

发明人： Kirsten P. Duffy ,  Gerald V. Brown ,  Ronald L. Bagley

IPC分类号： F03B1104

CPC分类号： F01D5/26 ,  F01D5/16 ,  F05D2260/96 ,  Y02T50/673 ,  Y10S416/50

摘要： A self-tuning impact damper is disclosed that absorbs and dissipates vibration energy in the blades of rotors in compressors and/or turbines thereby dramatically extending their service life and operational readiness. The self-tuning impact damper uses the rotor speed to tune the resonant frequency of a rattling mass to an engine order excitation frequency. The rattling mass dissipates energy through collisions between the rattling mass and the walls of a cavity of the self-tuning impact damper, as well as through friction between the rattling mass and the base of the cavity. In one embodiment, the self-tuning impact damper has a ball-in-trough configuration with tire ball serving as the rattling mass.

摘要翻译： 公开了一种自调谐冲击阻尼器，其吸收和消散压缩机和/或涡轮机中的转子叶片中的振动能量，从而显着延长其使用寿命和操作准备。 自调谐冲击阻尼器使用转子速度来将发出的振动质量的共振频率调节到发动机顺序激励频率。 咔哒声的质量通过碰撞物质与自调节冲击阻尼器的空腔壁之间的碰撞以及通过咔嗒声质量与空腔基座之间的摩擦而散发能量。 在一个实施例中，自调节冲击阻尼器具有滚珠槽配置，轮胎球用作摇动质量块。