某水电机组异常水力振动分析与处理
发布时间：2018-09-13 09:43
【摘要】：某水电机组在运行时,发现压力脉动、机组振动与噪声较往常明显增大,且随负荷的增加而增大,这将严重威胁机组的安全稳定运行。为此进行了变负荷试验,对变负荷数据进行分析,发现活动导叶过流不均是引起机组振动过大的原因,停机检查发现活动导叶处卡有异物,取出异物后,机组压力脉动与振动过大问题得到解决,为类似问题的处理提供了参考依据。
[Abstract]:When a hydroelectric unit is in operation, it is found that the pressure pulsation, the vibration and noise of the unit are obviously increased than usual, and increase with the increase of load, which will seriously threaten the safe and stable operation of the unit. For this reason, the variable load test was carried out, and the variable load data were analyzed. It was found that the uneven flow of the moving guide vane was the cause of the excessive vibration of the unit. The problems of pressure pulsation and excessive vibration are solved, which provides a reference for the treatment of similar problems.
【作者单位】： 国网新源控股有限公司技术中心;
【分类号】：TV738
[Abstract]:When a hydroelectric unit is in operation, it is found that the pressure pulsation, the vibration and noise of the unit are obviously increased than usual, and increase with the increase of load, which will seriously threaten the safe and stable operation of the unit. For this reason, the variable load test was carried out, and the variable load data were analyzed. It was found that the uneven flow of the moving guide vane was the cause of the excessive vibration of the unit. The problems of pressure pulsation and excessive vibration are solved, which provides a reference for the treatment of similar problems.
【作者单位】： 国网新源控股有限公司技术中心;
【分类号】：TV738
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