焊管2024，Vol.47Issue(9)：34-39,6.DOI:10.19291/j.cnki.1001-3938.2024.09.006
输气管道泄漏过程管内瞬态特性研究
Transient Characteristics in Gas Transmission Pipeline during Leakage Process
李明 1高鸣 2杨妮 3董华进 4罗衍涛 5梁昌晶1
作者信息
- 1. 中国石油华北油田公司第五采油厂,河北 辛集 052360
- 2. 中国石油西南油气田分公司物资分公司,成都 610000
- 3. 中国石油西南油气田公司华油公司重庆凯源石油天然气有限责任公司,重庆 400021
- 4. 国家管网集团西南管道有限责任公司天水输油气分公司,甘肃 天水 741002
- 5. 国家石油天然气管网集团有限公司山东省分公司聊城作业区,山东 聊城 252000
- 折叠
摘要
Abstract
In order to improve the emergency response strategy of gas pipeline leakage,a pipeline leakage model was established based on OLGA,a transient simulation software for multiphase flow,and the influence of leakage aperture,inlet flow,leakage position and back pressure on the leakage process was analyzed.The influence of different response modes of cut-off valve on leakage volume and direct economic loss was studied,and the time limit of maintenance and repair for different leakage aperture was discussed.The results show that after the leakage of gas transmission pipeline,the pressure and rate have experienced rapid decline zone,slow decline zone and stable operation zone,and the rapid decline zone has the shortest duration.The maximum and stable values of leakage rate increase with the increase of leakage aperture and gas transmission.The stability value of leakage point pressure decreases with the increase of leakage aperture and increases with the increase of gas transmission.The leak aperture is the most sensitive to the leak rate.When small hole and medium hole leak occur,it is recommended not to stop production,and repair the pipeline within 3 h and 1 h respectively.When leakage of large holes or above occurs,it is recommended to make emergency closing of the cut-off valve at both ends of the pipe section in order to better control the development of the situation.关键词
输气管道/管道修复/泄漏孔径/泄漏速率Key words
gas pipeline/pipeline repair/leakage aperture/leakage rate分类
能源科技引用本文复制引用
李明,高鸣,杨妮,董华进,罗衍涛,梁昌晶..输气管道泄漏过程管内瞬态特性研究[J].焊管,2024,47(9):34-39,6.
