Analysis of Key Technologies for Maintenance of Large Steam Turbine Valves in Power Plants
This paper takes the maintenance project of a large steam turbine valve in a power plant as an example.Due to the modification of oil pipes,the maintenance time of the steam turbine valve needs to be shortened,and the grinding time of the steam turbine valve is the only compressible process.By drawing on the application prin-ciples of other valve grinders,grinding rods,and positioning covers,a new device using a steam valve grinding de-vice instead of the valve core for grinding is proposed.Applying this device to the maintenance of large steam tur-bine valves can timely detect local poor contact and damage problems of the sealing surface,and carry out targeted grinding treatment,achieving good grinding effect and ensuring the tightness of the steam turbine valves.
Power plantLarge steam turbineValve maintenanceGrinding rodTightness
万方数据
维普
