| 欧阳海水电站1号机组水力共振分析 | |
| 王正伟 ; 唐拥军 ; 何成连 ; 肖建新 ; WANG Zhengwei ; TANG Yongjun ; HE Chenglian ; XIAO Jianxin | |
| 2010-06-08 ; 2010-06-08 | |
| 关键词 | 水力共振 叶道涡 涡壳进口压力 尾水管压力 预盖压力 hydraulic resonance blade channel vortex pressure in spiral inlet pressure in draft tube pressure in headcover TV734 |
| 其他题名 | Hydraulic resonance analysis of 1# unit of Ouyanghai hydropower station |
| 中文摘要 | 欧阳海水电站计划进行增容改造,为了保证引水管路和机组的安全稳定运行,需了解水电站的水力特性。从而进行了甩负荷、变负荷和变速试验。做变负荷试验时发现1号机组在小负荷运行区域出现共振现象,在上机架垂直振动,涡壳进口压力、尾水管锥管压力和顶盖压力实测分析发现均含有1 4倍频的相同频率成份。为探知出现此频率的原因,本文对此频率成分做了详细分析,得知它是由于1号机在小负荷工况运行时上冠处叶道涡产生的水力共振频率。本文还对消除或避免此水力共振现象提出了一些看法; Ouyanghai hydropower station is planned to make reformation for increasing capacity. In order to ensure safe operation of inlet pipeline and unit, hydraulic characteristic of this hydropower station is required to be known. Thereby load rejection tests, variable load tests and variable rotating speed tests are performed. Resonance phenomena is found at small load while variable load tests are carried out. The same frequency which is 1 4 times of rotative frequency is found in analysis of vertical vibration in upper generator bracket, pressure in spiral case inlet, pressure in draft tube and in headcover. For detecting the course of this frequency, it is discovered by detailed analysis that separation fluid at cavity leads to produce the hydraulic resonance frequency when 1# unit is working under the small load condition. Some methods to eliminate or avoid this hydraulic resonance are presented in this paper. |
| 语种 | 中文 ; 中文 |
| 内容类型 | 期刊论文 |
| 源URL | [http://hdl.handle.net/123456789/50734]  |
| 专题 | 清华大学 |
| 推荐引用方式 GB/T 7714 | 王正伟,唐拥军,何成连,等. 欧阳海水电站1号机组水力共振分析[J],2010, 2010. |
| APA | 王正伟.,唐拥军.,何成连.,肖建新.,WANG Zhengwei.,...&XIAO Jianxin.(2010).欧阳海水电站1号机组水力共振分析.. |
| MLA | 王正伟,et al."欧阳海水电站1号机组水力共振分析".(2010). |
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