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公开(公告)号：US20100329847A1
公开(公告)日：2010-12-30
申请号：US12666022
申请日：2008-10-24
IPC分类号： F01D5/14
CPC分类号： F01D9/041 , F01D5/16 , F05D2220/31 , Y10S416/50
摘要： A stationary blade and a steam turbine capable of reducing self-excited vibrations with a simple configuration are provided. A stationary blade has a cavity, extending in a blade-width direction, formed therein and slits communicating between the cavity and the outside. A wave-shaped plate spring that is in sliding contact with at least one of a pressure-side member and a suction-side member is provided between the pressure-side member, which is a portion on the pressure side of the cavity, and the suction-side member, which is a portion on the suction side of the cavity. When the stationary blade is elastically deformed, the wave-shaped plate spring causes friction between itself and at least one of the pressure-side member and the suction-side member. This friction attenuates relative positional displacement between the pressure-side member and the suction-side member. Thus, self-excited vibrations occurring at the stationary blade can be reduced.
摘要翻译： 提供了能够以简单的结构减少自激振动的固定叶片和蒸汽轮机。 固定叶片具有在叶片宽度方向上延伸的腔体，其形成在腔体和外部之间连通的缝隙。 在压力侧部件之间与压力侧部件和吸入侧部件中的至少一个滑动接触的波形板簧设置在作为空腔的压力侧的一部分的压力侧部件与 吸入侧构件，其是空腔的吸入侧的一部分。 当固定叶片弹性变形时，波形板簧引起其与压力侧构件和吸入侧构件中的至少一个之间的摩擦。 这种摩擦使得压力侧构件和吸入侧构件之间的相对位置偏移减弱。 因此，可以减少在固定叶片处产生的自激振动。
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公开(公告)号：US08851844B2
公开(公告)日：2014-10-07
申请号：US12666022
申请日：2008-10-24
CPC分类号： F01D9/041 , F01D5/16 , F05D2220/31 , Y10S416/50
摘要： A stationary blade and a steam turbine capable of reducing self-excited vibrations with a simple configuration are provided. A stationary blade has a cavity, extending in a blade-width direction, formed therein and slits communicating between the cavity and the outside. A wave-shaped plate spring that is in sliding contact with at least one of a pressure-side member and a suction-side member is provided between the pressure-side member, which is a portion on the pressure side of the cavity, and the suction-side member, which is a portion on the suction side of the cavity. When the stationary blade is elastically deformed, the wave-shaped plate spring causes friction between itself and at least one of the pressure-side member and the suction-side member. This friction attenuates relative positional displacement between the pressure-side member and the suction-side member. Thus, self-excited vibrations occurring at the stationary blade can be reduced.
摘要翻译： 提供了能够以简单的结构减少自激振动的固定叶片和蒸汽轮机。 固定叶片具有在叶片宽度方向上延伸的腔体，其形成在腔体和外部之间连通的缝隙。 在压力侧部件之间与压力侧部件和吸入侧部件中的至少一个滑动接触的波形板簧设置在作为空腔的压力侧的一部分的压力侧部件与 吸入侧构件，其是空腔的吸入侧的一部分。 当固定叶片弹性变形时，波形板簧引起其与压力侧构件和吸入侧构件中的至少一个之间的摩擦。 这种摩擦使得压力侧构件和吸入侧构件之间的相对位置偏移减弱。 因此，可以减少在固定叶片处产生的自激振动。
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