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天然气与石油 NATURAL GAS AND OI
2017年6月
基于显式分析的 LNG装车臂拉断阀
作用过程研究
周怀发申永亮
中国石化青岛液化天然气有限责任公司，山东青岛266400
摘要：紧急拉断阀（紧急脱离装置)是防止鹤管和软管意外断裂造成泄漏事故的关键设备。限据移动式压力容器充装许可规则，装卸台要有防止装卸用管拉脱的连锁保护装置。目前装车情安装拉断阀的应用经验较少，且现有实验仅是针对拉断阅个体进行的，人们对其安全可靠性存在疑虑，而带臂带液实地测试则着损坏设备以及大规模泄漏的风险，经济及安全成本较大。针对这一现状，以国产某LNG装车臂为例，利用LS-DYNA建立装车臂拉断阅的有限元模型，结合设计参数和实际工况进行仿真计算，得到了拉断阅的作用情形和规律，对拉断阀的设计及使用提出了若干建议。
关键词：LNG；槽车；装车情；拉断阀；LS-DYNA；有限元 D0I:10. 3969/ j. issn. 1006 5539. 2017. 03. 008
Research ontheBreakingofBreak-Away Coupling at
LNGLoadingArmBasedonExplicitAnalysis
Zhou Huaifa,Shen Yongliang
Sinopec Qingdao Liquefied Natural Gas Co. , Ltd, Qingdao, Shandong, 266400, China
Abstract: Break-away coupling is a key equipment to prevent the leakage caused by the hose breaks unexpectedly- According to the filling permission rules for mobile pressure vessels , interlocking protection device shall be installed on the station to prevent pipeline pull-out. At present, there is little experience in application of break-away coupling in the loading arm, and the existing experiment is only for the individual of the break-away coupling- There are doubts about its safety and reliability, while the field testing with arm and liquid may cause damage to equipment and large-scale leakage, as well as the economic and security costs. In response to this situation, taking certaion domestice LNG load-arm break-away coupling as an example, the finite element model of break-away coupling is established by LS-DYNA, and the simulation results under the design parameters and actual working conditions are given.Several recommendations are made for the design and application of break-away coupling
Keywords : LNG; Truck ; Loading arm; Break-away coupling; LS-DYNA; FEM
收稿日期：2016-12-13
作者简介：周怀发（1990一），男，山东德州人，助理工程师，硕士，主要从事液化天然气装卸运输管理工作，
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