基于天然气放空系统的水力计算软件开发  

Development of Software for Hydraulic Calculation of Natural Gas Venting System

作　　者：娄晨[1] 林棋[1] 

机构地区：[1]中国石油大学(北京)油气管道输送安全国家工程实验室,北京昌平102249

出　　处：《石油工业技术监督》2014年第4期1-6,共6页Technology Supervision in Petroleum Industry

基　　金：国家科技重大专项"煤层气田集输系统优化技术"(编号:2011ZX05039-002)

摘　　要：高压天然气放空系统由放空干线管段气体、放空管线及外界大气组成。放空管路属于非稳定流动,其水力计算不能采用一般站场管路的达西公式。以Fano方程为基础,运用流体力学及输气管路流动基础理论进行程序编写,计算软件可实现对各时刻放空所对应的瞬时放空量、累计放空时间、截面压力及温度、储气量的求解。计算结果与图解法进行对比,误差控制在2%以内,弥补了图解法仅可求得瞬时放空量而无法得到其他参数的缺陷,并利用东河伴生气管线下沉工程现场放空数据与本计算软件对比,计算结果吻合度高,符合现场工程实际。High-pressnre natural gas wenting system pipeline ennsists of main venting pipeline, venting pipes and the atmosphere. There is unsteady flow in tile venting pipes, and therefore Darey formula is nnt suitable to their hydraulic calculatinn. Based on Fano equation, the software for the hwlraulie calculation of natural gas venting system is developed applying fluid meehanit＇s theory and the hasie theory of gas transporting pipe flow. To use the software can solve instantaneous venting quantity, aeetnnulative venting time, the pressure and lenlperattn＋e al any sec＇tion, and storage amounl of natural gas. The relative error between the result computed using lhe software and the result obtained using graphic＇ method is less Ihan 2%. The software overcomes the difficulty that only instantaneous venting quantity can be calculated but other parameters cannot be obtained using graphic method. The venting data of l）onghe assoi- ated gas pipeline aleulated using the software are compared with field measuring data, and it is shown thai they are coincident.

关 键 词：天然气 放空系统 水力计算 软件开发 

分 类 号：TE97[石油与天然气工程—石油机械设备]