| 斜置喷嘴结构——降低喷嘴激振叶片动应力的有效途径 |
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| 引用本文： | 陆龙云.斜置喷嘴结构——降低喷嘴激振叶片动应力的有效途径[J].上海理工大学学报,1988(2). |
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| 作者姓名： | 陆龙云 |
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| 作者单位： | 上海机械学院动力机械工程系 |
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| 摘 要： | 本文从喷嘴激振力作功的原理出发,阐述了斜置喷嘴结构可以显著地降低叶片第一音调各类振型的动应力,并以国产某中压事故级组为例作了计算,可使切向弯曲B_0型等危险振型降低动应力达50%以上。
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| 关 键 词： | 透平振动 叶片振动 动应力 斜喷嘴 |
Inclinic Nozzle for Decreasing the Dynamic Stresses of Steam Turbine Blade |
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| Lu Longyun.Inclinic Nozzle for Decreasing the Dynamic Stresses of Steam Turbine Blade[J].Journal of University of Shanghai For Science and Technology,1988(2). |
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| Authors: | Lu Longyun |
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| Abstract: | Tudging from the Principle of the work done by the exciting force of the nozzles, the present paper describes the inclinic placement of the nozzles for decreasing the dynamic stresses of the first tone's vibration modes. An accident stage of the medium pressure rotor of the steam turbine produced in this country is calculated as an example. The calculating result indicates that the dynamic stresses of all the first tone's vibration modes can be remarkably reduced. In the dangerous tangential bending Bo modes, it decreases more than 50%. |
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| Keywords: | Turbine vibration Blade vibration Inclinic nozzle Dynamic stress |
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