洞穴型地下储气库热力分析  

Thermodynamic Analysis of Cavern-type Underground Gas Storage

作　　者：严铭卿[1] 赵梦涛 李军[3] 石珍[3] 李宏阳[3] 

机构地区：[1]中国市政工程华北设计研究总院有限公司,天津300074 [2]成都城市燃气设计研究院有限公司,四川成都610045 [3]天津城建大学,天津300384

出　　处：《煤气与热力》2015年第2期1-7,共7页Gas & Heat

摘　　要：洞穴型地下储气库洞腔空间经历注气、储气、采气、待储四个周期性运行阶段。通过对洞穴型地下储气库洞腔空间中天然气压力和温度变化的热力过程和岩体中发生导热过程的分析,建立热力分析模型。针对具体项目,以盐穴地下储气库为例,将模型参数具体化,采用有限差分法编程计算盐穴内的温度、压力以及岩体温度场并进行各种因素的敏感性分析。洞穴型地下储气库热力工况与储气库运行阶段有密切的关系,对天然气和岩体的热力学物性参数有相当的敏感性。在进行模型敏感性分析的同时,也检验了模型计算的稳定性。There are four periodic operation sta- ges including gas injection, storage, withdrawing andready for storage for cavern-type underground gas stor- age. Based on analyzing the thermodynamic process of gas temperature and pressure in cavern and the heat conduction inside the rock, a thermodynamic analysis model has been established. Aimed at the specific pro- ject, taking a salt cavern-type underground gas storage for example, the model parameters are specified, the temperature and pressure in the salt cavern as well as the temperature filed in the rock are programmed and calculated by finite difference method, and the sensi-bilities of various parameters are analyzed. The ther- modynamic conditions of cavern-type underground gas storage closely relate to the operation stages of the stor- age, and have a considerable sensitivity to the thermo- dynamic parameters of natural gas and rock. The sta- bility of the model is proved when the sensitivity of the model is analyzed.

关 键 词：地下储气库 热力分析 洞穴型地下储气库 盐穴地下储气库 

分 类 号：TE822[石油与天然气工程—油气储运工程]