王志方, 李熠辰, 张玉良, 李波. 天然气站场泄漏爆炸对站控室影响的模拟分析[J]. 油气储运, 2014, 33(7): 740-743. DOI: 10.6047/j.issn.1000-8241.2014.07.011
引用本文: 王志方, 李熠辰, 张玉良, 李波. 天然气站场泄漏爆炸对站控室影响的模拟分析[J]. 油气储运, 2014, 33(7): 740-743. DOI: 10.6047/j.issn.1000-8241.2014.07.011
WANG Zhifang, LI Yichen, ZHANG Yuliang, LI Bo. Simulation of influences of leakage-induced explosion on control chamber at gas compressor station[J]. Oil & Gas Storage and Transportation, 2014, 33(7): 740-743. DOI: 10.6047/j.issn.1000-8241.2014.07.011
Citation: WANG Zhifang, LI Yichen, ZHANG Yuliang, LI Bo. Simulation of influences of leakage-induced explosion on control chamber at gas compressor station[J]. Oil & Gas Storage and Transportation, 2014, 33(7): 740-743. DOI: 10.6047/j.issn.1000-8241.2014.07.011

天然气站场泄漏爆炸对站控室影响的模拟分析

Simulation of influences of leakage-induced explosion on control chamber at gas compressor station

  • 摘要: 长输天然气管道部分站场站控室、值班室面向工艺装置区设置,且开设非全密闭式玻璃窗,工艺装置区一旦发生泄漏爆炸将对站控室产生极大危害。在气象条件、运行压力、站控室与工艺区的间距等因素一定的情况下,天然气爆炸事故对站控室的影响取决于泄漏孔径的大小。以某典型运行站场为研究对象,利用SAFETI软件,对不同孔径下的泄漏爆炸事故进行模拟计算,结果表明:管道泄漏孔径小于5 mm的泄漏不会引发爆炸;孔径为29 mm及以下的泄漏爆炸对建筑物影响较小;孔径为71 mm的泄漏发生爆炸时,站控室的门窗及屋顶会严重破坏并可能坍塌;孔径90 mm及以上孔径泄漏发生爆炸时,建筑物可能会发生崩塌甚至倾倒。由此,虽然站控室至工艺装置区的距离满足了规范要求,但是遭受泄漏爆炸冲击波的危害后果仍较严重,建议对已建在用的站控室进行防爆加固,新建的工程项目需要进一步计算确定安全距离。

     

    Abstract: At gas compressor stations along a gas pipeline, control chamber and duty room are often set facing the process area and configured with non-fully-closed glass windows. Once any leakage and explosion happen in the process area, the control chamber may be harmed significantly. Under given meteorological conditions, operation pressure and the distance between control chamber and process area, influences of a gas explosion on control chamber depends on the size of leakage opening. SAFETI software is used for analog calculation of leakage-induced explosion under different leakage openings in a typical gas compressor station. The results show that (1) if the leakage opening is less than 5 mm, no explosion may be induced; (2) if the leakage opening is 29 mm or less, the induced explosion may bring small influences on buildings; (3) if the leakage opening is 71 mm, the induced explosion may destroy seriously doors, windows and roofs, or even collapse the control room; and (4) if the leakage opening is 90 mm or more, the induced explosion may cause the building collapse or fall. Although the distance between control chamber and process area meets the specification required, the control chamber may be seriously affected by shock wave of leakage-induced explosion. Therefore, it is suggested to reinforce the existing control chambers in service by explosion-proof measures and carefully calculate the safe distance for new engineering projects.

     

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