International Journal of Mechanical Engineering

During the operation of steam turbine, the leakage of cylinder caused by design, manufacture, installation and operating conditions is the most common equipment problem. The tightness of cylinder joint surface directly affects the safe and stable operation of the unit. It is an important work for cylinder maintenance to maintain the joint surface tightly. In the process of dealing with the leakage of cylinder joint surface, the causes of formation should be carefully analyzed and various comprehensive methods should be used. To meet the requirements of tight joint surface. In this paper, through practical research, the sealing material of improving cylinder joint surface is used, and expanded tetrafluoro belt is selected as the sealing material of cylinder shaft seal joint surface. Finally, the problem of steam leakage in cylinder of unit is thoroughly solved and very good effect is achieved.

Steam turbine; Joint surface; Steam leakage; Seal up; Expanded Teflon