天然气冷放空模拟及实验研究
Study on the Simulation and Experimental of Natural Gas Cold Venting
马剑林 1李又绿 2王爱玲 1余东亮 1余双宁 1解正一2
作者信息
- 1. 国家管网集团西南管道有限责任公司,成都 610500
- 2. 西南石油大学石油与天然气工程学院,成都 610500
- 折叠
摘要
天然气放空是输气管道生产运行过程中的重要环节,是压力、温度、放空流量都随着时间变化的复杂过程.基于放空管道的实际情况,对相关规范所推荐的计算方法进行改进完善.改进的模型考虑了出口临界流动和亚临界流动的放空计算,研究放空管阀门开度、天然气气体膨胀导致的内能变化对管道放空的影响.该模型的计算结果与工程实际中的管道放空数据大致吻合,为以后的生产调度和事故维抢修提供了技术支持.
Abstract
Natural gas venting is an important part of the production and operation process of gas pipeline,which is a complex process in which pressure,temperature and venting flow rate all change with time.Based on the actual situation of the venting pipeline,the calculation method that is recommended is improved and perfected by the relevant specifications.The model takes into account the venting calculations of the critical flow and subcritical flow at the outlet,the effects of the venting pipe valve opening and the internal energy changes caused by the expansion of natural gas on the venting of the pipeline are studied.The calculation results of the model are generally consistent with the actual pipeline venting data,which provides technical support for future production scheduling and accident repair.
关键词
天然气/长输管道/放空时间/放空量/迭代计算Key words
natural gas/long-distance pipeline/venting time/venting volume/iterative calculation引用本文复制引用
出版年
2024
NETL
NSTL
维普
万方数据