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

作　　者：顾正皓[1] 张宝[1] 光旭[2] 鲍文龙[1] GUZhenghao ZHANG Baox GUANG Xu BAO Wenlong(State Grid Zhejiang Electric Power Research Institute,Hangzhou 310014, China CEEG Zhejiang Electric Power Design Institute Co., Ltd.,Hangzhou 310012, China)

机构地区：[1]国网浙江省电力公司电力科学研究院,杭州310014 [2]中国能源建设集团浙江省电力设计院有限公司,杭州310012

出　　处：《浙江电力》2017年第5期34-37,52,共5页Zhejiang Electric Power

摘　　要：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 unclos-ing 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：回热抽汽系统 逆止阀 甩负荷 转速飞升 

分 类 号：TK267[动力工程及工程热物理—动力机械及工程]