输气管道系统调整技术研究

【作者】 刘智；

【导师】 袁宗明；

【作者基本信息】 西南石油学院 ， 油气储运工程， 2003， 硕士

【摘要】 本文对一个有进分气支线的枝状输气管网系统进行了调整改造方案的研究。针对一个有普遍意义的有进分气支线的枝状输气管网系统，建立了用于系统分析的数学模型。当气源气量、位置发生变化和用户数量、用气量变化时，原来的输气管网系统可能不能满足输送工艺的要求，需要对管网系统进行改造，本文考虑了三种调整改造方案，一是在原来的管网中增设压缩机站；二是更换原有的部分输气管段；三是铺设副管。在满足输气工艺的要求下，同时遵循下面的原则：增设的压缩机站数越少、压比越小就越经济；更换管段的长度越短、管径越小就越经济；铺设副管的长度越短、管径越小就越经济。对每一需要改造的管道提出了三种改造方案。 最后，以川西南地区的输气管网系统为例，进行了实例计算，提出了既满足气源和用户要求，又满足输送工艺要求的较经济的改造调整方案，可以为管网经营管理者提供决策依据。更多还原

【Abstract】 This paper focuses on the research of the adjustment and reconstruction scheme for a treed nature gas line network system with discharge of branch lines. For such generalized system, the mathematical model which be used for system analysis has been established . When the production of the gas sources and locations change, with the consumer number and gas requirement changing as well, the existent nature gas line network system may not meet the need of the transportation process, so that the gas line network system has to be reconstructed. Three kinds of schemes have been considered in this paper as follows: one is to add the compressor station to the old nature gas line network, the other is to replace part of original segment of the existent gas pipeline, and the last is to lay the looped pipeline. The primary condition is to meet the need of the transportation process and the following principles have also to be obeyed: the system will be more economical with fewer numbers and smaller compression ratio of the added compressor station, shorter length and smaller pipe diameter of the replacing pipe segment, and the same of the laying looped pipeline as well. Three kinds of reconstruction schemes have been brought forward for each pipeline which needs to be reconstructed.Finally, take the gas line network system in the southwest region of Sichuan as an example to calculate, and bring forward a comparatively economical adjustment and reconstruction scheme. It can meet the need of gas sources and consumers’ requirement, but also the need of the transportation process. And then provide decisional proof for the network manager.更多还原