输气管道调压系统压力参数设置探讨

Discussion on the Pressure Parameter Setting of Gas Transmission Pipeline Pressure Control System

为了规范和统一输气管道分输站调压系统的压力参数设定值,充分发挥输气干线分输站下游分输管道的输送能力,通过分析目前国内输气管道采用的主要设计规范GB50251—2015和欧洲输气管道采用的设计规范EN12816—2014、ISO13623—2007对输气线路和调压系统方面的具体要求,采用类比推理的分析方法,对比了我国标准和欧洲标准中影响输气线路和调压系统设计的重要因素,即线路地区等级的划分、管道强度设计系数的选取、管道壁厚计算公式、管道强度试验压力。参考EN12816—2014标准中调压系统压力参数的设置模式,类推出依据GB50251—2015设计的输气管道调压系统可以采取的压力参数设置模式,为输气管道调压系统和压气站的压力参数设置提出了理论依据,具有重要的实际应用和工程指导意义。

In order to standardize and unify the pressure parameter setting value of the pressure control system in gas pipeline distribution stations, and to give full play to the transportation capacity of the downstream pipeline in the main gas transmission station, the specific requirements of gas transmission lines and pressure control system in standard GB50251- 2015 that mainly adopted in Chinese gas transmission pipelines and standard EN12816- 2014 and ISO13623- 2007 mainly adopted in European gas transmission pipelines are analyzed. The analogism system analysis method is used to analyze and com - pare the important factors affecting gas transmission lines and pressure control system design in Chinese standards and European standards, namely the grading of line location class, selection of pipeline strength design coefficient,pipeline wall thickness calculation formula and test pressure of pipeline pressure. The pressure parameter setting method in EN12816- 2014 is seen as a sample,and then the pressure parameter setting method in the gas transmission pipeline pressure control system designed according to GB50251-2015 can be reasoned out. It also provides a theoretical basis for the pressure parameter setting of gas transmission pipeline in the pressure control system and the compressor station and has im - portant practical application and project guiding significance.