The control stage of improved 300MW steam turbine used bowed static blade cascades with convergent tip endwall and integral shroud triple pin rotating blades.

By using 3D solid model,the twist-back angle of steam turbine twisted long blade with integral shroud was analyzed and calculated.

The preheater s rotor and shroud was found to be overstressed but it was impossible to restore them to the conventional construction.

This paper states that medial and small thermo - eletric plant and power station need develop technique reformation, use corporation skill and solve the cover band cutting of turbo generator impeller to improve the examine and repairing quality and reduce examine and repairing cos

The breaking state of shroud band on the last stage blade of low voltage rotor of a electrothermal Co since commissioning of 125 MW set is presented.

6 in Huaneng Luohuang Power Generation Co Ltd,and resulted from non-solidness in secondary cement grouting of the unit,impact-rubbing between stationary and movable parts of the sealing shoe,decrease of connecting rigidity in pipeline structure of the hydogen cooler,as well as fracture and fly-away of shroud band used for the final-stage blades in low-pressure cylinder no.

This section expatiate on the parameter design method of the tongs for producting prick shroud: Apply the computer to make the design process be simpler and more consecutive ,and so you can according to the analysis to go along the parameter design method.