摘要
液化天然气(LNG)管道施工过程产生焊渣、铁屑等异物,需要通过清洗、吹扫等方式将其移除,达到清洁要求。通过对空气吹扫方案在施工中的运用,总结了气源选择方案。根据气源的不同采用不同的吹扫方式,完成主管和支管的清洁。根据带动力理论,对所选管线进行吹扫有效性计算评估,通过清洁标准判定管线是否达到验收的要求,为应用空气吹扫方案进行的施工提供借鉴。
Welding slags,iron dusts and other foreign matter appear during liquefied natural gas(LNG)pipeline construction.Such materials need to be removed by cleaning or purging so as to meet the cleaning requirements.Through the use of air purge scheme during pipeline construction,we summarize the air source selection schemes.According to different air sources,different methods can be adopted to complete the cleaning of the main pipeline and branches.According to the theory of drag force,evaluation of air blowing effectiveness is demonstrated.Based on cleaning criteria,one can determine whether or not the pipeline achieves acceptance requirements.This research will provide reference for the pipeline construction using air purge scheme.
引文
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