一体式焊接截止阀的带压堵漏.PDF

投产与运行 2015 年1 月　第34 卷第1 期 1000-8241 2015 01-0046-04 文章编号： （ ） 一体式焊接截止阀的带压堵漏 1 2 2 解应涛 　陈利琼 　李云云 1. 天然气川气东送管道分公司，湖北武汉 430020；2. 西南石油大学，四川成都 610500 摘要：川气东送管道站场、阀室大量采用一体式焊接截止阀作为压力或气体取样的根部接口阀，自 投产以来，多次发生阀杆微漏，若处理不及时，持续泄漏会造成爆炸、火灾等安全事故。根据川气东 送管道站场的泄漏状况，在投产初期采用更换阀门方法不可取的情况下，采取不停输带压堵漏技术。 通过对现场泄漏状况的勘查，进行专用夹具的设计、制造，并在实验室内模拟现场压力表根阀泄漏后 的带压堵漏治理，取得了良好效果。经现场实际应用，成功解决了困扰输气生产过程中一体式焊接 截止阀阀杆泄漏的难题。（图3，表3，参6） 关键词：泄漏；一体式焊接截止阀；带压密封；堵漏 中图分类号：TE832 　　　　 文献标识码：A　 　　　doi ：10.6047/j .issn.1000-824 1.2015.01.009 Leakage stoppage of integrated welding globe valve under pressure 1 2 2 XIE Yingtao , CHEN Liqiong , LI Yunyun 1. Sichuan to Eastern China Gas Transmission Pipeline Company, Wuhan, Hubei, 430020; 2. Southwest Petroleum University, Chengdu, Sichuan, 610500 Abstract: At gas compressor stations and valve chambers along the Sichuan to Eastern China Gas Pipeline, the integrated welding globe valves are commonly used as the root valves at the time of pressure or gas sampling. However, since commissioning, minor leakage has frequently occurred at valve stem. If not treated timely, the continuous leakage will cause explosion, fire and other accidents. Against the leakage in gas compressor stations along the Sichuan to Eastern China Gas Pipeline, the leakage stoppage technology under pressure without shutdown is used when valve replacement is unacceptable at early stage of operation. Through the investigation of field leakages, special fixtures are designed and manufactured, an