Failure analysis and technical countermeasures of high-side control valve of 1030MW unit
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.
国家科技期刊平台
NSTL
万方数据
