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[1]芦建华,刘泰碧.双清管器间充氮气置换在输气管道投产中应用[J].油气储运,1994,13(6):16-19.[doi:DOI:10.6047/j.issn.1000-8241.1994.06.005]
　Lu Jianhua,Liu Taibi.Nitrogen Fed between Two Srapers to Replace Natural Gas in Gas Pipeline Commissioning[J].Oil & Gas Storage and Transportation,1994,13(6):16-19.[doi:DOI:10.6047/j.issn.1000-8241.1994.06.005]

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双清管器间充氮气置换在输气管道投产中应用

《油气储运》[ISSN:1000-8241/CN:13-1093/TE] 卷: 13 期数: 1994年6期页码: 16-19 栏目: 出版日期: 1900-01-01

Title:: Nitrogen Fed between Two Srapers to Replace Natural Gas in Gas Pipeline Commissioning

作者:: 芦建华; 刘泰碧; 华北油田采油四厂工程技术大队

Author(s):: Lu Jianhua; Liu Taibi

关键词:: 输气管道; 清管器; 隔离; 天然气; 氮气; 应用; 置换

Keywords:: gas pipeline; scraper; segregation; natural gas; nitrogen; application; replacement

DOI:: DOI:10.6047/j.issn.1000-8241.1994.06.005

摘要:: 在输气管道投产中,最关键的环节是管道的天然气置换工作。承担着为首都供气任务的华北油田北京供气复线工程,为确保安全投产,采用了双清管器间加充氮气形成隔离带进行置换的方法。该管道长64.16km、管径DN529,沿线穿越铁路、公路、河流较多,地处村庄广布、人口稠密地区。介绍了双清管器间加充氮气隔离置换工艺的实施过程,包括清管器的选择和发送、加充氮气工艺、天然气置换、收球等。选用了DQZ系列电子跟踪清管器,首先用压风车将第一个清管器推入管道,接着向管道内加充氮气49瓶,关发球筒阀门后,管内氮气压力为0.022MPa,共充氮气约220m³,再用外输天然气发送第二个清管器进行置换,通过监听及计算,得知平均置换球速为1.61～7.04m/s。置换后管道内含氧量小于0.2%,满足了输气的要求。

Abstract:: During the commissioning of a gas pipeline, the most critical link is the replacement of the natural gas in the pipeline. A method of feeding nitrogen to replace gas between two scrapers is adopted in Beijing Gas Loop Line originating from Huabei Oil Fields which is the source of gas supply for Beijing City. This consideration provided possibility of safe commissioning. The gas pipeline is 64.16 km in length,529 in diameter (DN), passing through many a railway, highway, river, villege and highly populated area.Introduced in the paper is how this method was realized and its procedure including the selection of scrapers, launching and receiving process, and that of replacement of natural gas. Electronic tracing scrapers of DQZ series are recommended. The operation procedure is like this: first, push the scraper into the pipeline by means of a mobile compressor, then feed 49 cylinders of nitrogen, close the valve of the launcher; (The internal, nitrogen pressure is 0.022 MPa, the quantity of nitrogen being about 220 m³;) and finally launch the second scraper for replacement by means of the outgoing natural gas. Through mornitoring and calculation, the replacing speed is 1.61-7.04 m/s. The nitrogen content inside the pipeline is less than 0.2% after replacement, which can meet the requirements of gas transportation.

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备注/Memo

收稿日期:1994-5-31。
作者简介:芦建华,工程师,1962年生,1983年毕业于西南石油学院油气储运专业,现从事采、输气技术的管理工作。

更新日期/Last Update: 1900-01-01