回热抽汽管道容积对汽轮机甩负荷时转速飞升的影响Effect of Regenerative Extraction Pipeline Volume on Speed Rise of Steam Turbine in Load Rejection
顾正皓,张宝,光旭,鲍文龙
GU Zhenghao,ZHANG Bao,GUANG Xu,BAO Wenlong
摘要(Abstract)：
通过对回热抽汽管道系统进行建模和仿真,分析了各级抽汽系统对汽轮机甩负荷时转速飞升的影响,计算了抽汽逆止阀不关闭以及不同的延时关闭时间,所引起的转速飞升值,并按照甩负荷后转速飞升的2种不同准则对抽汽逆止阀的关闭时间提出了建议。
Through modeling and simulation of the regenerative extraction steam pipeline, effect of extraction system at all levels on speed rise during load rejection is analyzed, and the speed rise values during unclosing time of withdrawal valve and the different delayed closing times are calculated. The paper brings forward suggestion on the closing time of withdrawal valve in accordance to two different criteria of speed rise after load rejection.
关键词(KeyWords)：
回热抽汽系统;逆止阀;甩负荷;转速飞升
regenerative extraction system;withdrawal valve;load rejection;speed rise
基金项目(Foundation):
作者(Author):
顾正皓,张宝,光旭,鲍文龙
GU Zhenghao,ZHANG Bao,GUANG Xu,BAO Wenlong
DOI: 10.19585/j.zjdl.201705009
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