1030MW机组高压旁路调节阀失效分析及技术对策  

Failure analysis and technical countermeasures of high-side control valve of 1030MW unit

作　　者：张宇飞 ZHANG Yufei(Zhejiang Zheneng Zhongmei Zhoushan Coal Power Co.,Ltd.,Zhoushan 316000,China)

机构地区：[1]浙江浙能中煤舟山煤电有限责任公司,浙江舟山316000

出　　处：《能源工程》2024年第4期31-35,共5页Energy Engineering

摘　　要：某电厂超超临界1030MW汽轮机在运行时高压旁路调节阀阀盖螺栓发生断裂,螺栓质量和阀门结构因素是高压旁路调节阀失效的主要原因。为了避免因阀门泄漏蒸汽、螺栓断裂造成人身伤害、设备损坏、机组非计划性停机,提高机组效率,利用原管口、执行机构、控制组件和液压油站,提出一个采用自密封结构高压旁路调节阀的技术改进方案。During the operation of steam turbine of a 1030MW ultra supercritical power plant,the bolts on valve cover of high bypass control valve broke,which reduced the safety of the unit.Through analysis,it is considered that bolt quality and valve structure are the main reasons for the failure of high bypass control valve.In order to avoid personal injury,equipment damage,the unit was unscheduled shutdown due to valve steam leakage and bolt fracture,and improve the unit efficiency,a technical transformation scheme using self-sealing high bypass control valve is proposed by using the original nozzle,actuator,control component and hydraulic oil station.

关 键 词：高压旁路 调节阀 螺栓 断裂 自密封 

分 类 号：TK267[动力工程及工程热物理—动力机械及工程]