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合理的压缩机安全运行参数的选取研究,是提高管道可靠性、降低压气站及整个长输管道运行风险的主要手段,因此,对压缩机出口管段进行安全性研究,找出该管段出现事故的影响因素及各因素在管道事故中的影响程度是非常必要的。本文在管道二次应力的校核中从最大剪切应力强度理论入手,利用有限元计算程序分析了不同出口温度、出口压力条件下管道最大剪切应力的变化趋势,从而发现并验证了该压缩机出口管段承受的最大设计工况为(9.8MPa、120℃),因此表明现场将压缩机停车上限设置为该值是准确的;另外,通过研究不同沉降支点组合对管道应力的影响,获得了工程现场和施工过程中不允许出现沉降的支点组合,便于站场运行管理及施工监管。
Reasonable selection of compressor safety operating parameters is to improve pipeline reliability and reduce the compressor station and the long-distance pipeline operation risk of the main means, therefore, the compressor outlet pipe safety study to identify the accident occurred in the pipe section Influencing factors and the impact of various factors in the pipeline accident is very necessary. This paper starts with the theory of maximum shear stress in the check of pipeline secondary stress, and uses the finite element program to analyze the trend of maximum shear stress of pipeline under different outlet temperature and outlet pressure, and then finds and verifies the compression The maximum design condition of the machine outlet pipe is (9.8MPa, 120 ℃), so it is accurate to set the upper limit of the compressor on site to this value. In addition, by studying the influence of different settlement sub-sets on the pipe stress, The construction site and the construction process does not allow the settlement of the fulcrum combination of station operations and construction management.