压缩机出口管道应力与参数敏感性研究

The compressor outlet piping stress and the parameter sensitivity study

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。

the reasonable selection reliability, reduce the pressure QiZhan of parameters of the safe operation of the compressor research, is to improve the pipeline and the primary means of long-distance pipeline operation risk, therefore, to safety study of compressor outlet section, find out the influence factors of the section into accidents and the influence degree of various factors in pipeline accidents is very necessary. This paper in the secondary stress check, from the perspective of the maximum shear stress strength theory, using the finite element calculation program is analyzed under the condition of different outlet temperature, outlet pressure change trend of the maximal shear stress, so as to find and verify the maximum design conditions of the compressor outlet section under（9.8 MPa, 120 ℃）, therefore suggests that the scene will compressor stop limit is set to the value is accurate;In ad- dition, through study the influence of different settlement fulcrum combination of pipe stress, get the scene of the engineering and construction are not allowed to appear in the process of subsidence fulcrum of combination, is advantageous for the yard operation management and construction supervision.