Research and practice of comprehensive treatment of steam turbine cylinder leakage
汽轮机汽缸渗漏综合治理研究与实践

摘要

汽轮机在运行过程中，由于设计、制造、安装、运行工况等原因，造成的汽缸渗漏是最为常见的设备问题，汽缸结合面的严密性直接影响机组的安全稳定运行，检修处理汽缸的结合面使其达到严密，是汽缸检修的重要工作，在处理结合面漏汽的过程中，要仔细分析形成的原因，综合的运用各种方法，以达到结合面严密的要求。通过实践研究采用改进汽缸结合面的密封材料，选用膨化四氟带用于汽缸轴封结合面的密封材料，最终彻底解决机组气缸蒸汽渗漏问题，取得非常好的效果。

Abstract

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.