主管：中华人民共和国应急管理部
主办：应急管理部天津消防研究所
ISSN 1009-0029  CN 12-1311/TU
消防科学与技术

消防科学与技术 ›› 2023, Vol. 42 ›› Issue (11): 1472-1476.

• • 上一篇    下一篇

220 kV地下主变压器室爆炸泄压研究

谢丰蔚1, 吴培红1, 陈凯1, 吕东2，3,4   

  1. （1. 国网北京市电力公司经济技术研究院，北京 100055；2. 应急管理部天津消防研究所，天津 300381；3. 工业与公共建筑火灾防控技术应急管理部重点实验室，天津 300381；4. 天津市消防安全技术重点实验室，天津 300381）
  • 出版日期:2023-11-15 发布日期:2023-11-15
  • 作者简介:谢丰蔚(1990- )，男，河南叶县人，国网北京市电力公司经济技术研究院工程师，硕士，主要从事变电站建筑结构设计技术、变电站减灾和防灾技术研究，北京市西城区广安门外街道车站西街15号，100055。
  • 基金资助:
    国家电网有限公司科技项目（52023420000S）

Study on explosive pressure relief in 220 kV underground main transformer chamber

Xie Fengwei1, Wu Peihong1, Chen Kai1, Lv Dong2,3,4   

  1. (1. State Grid Economic and Technological Research Institute Co., Ltd., Beijing 100055, China; 2. Tianjin Fire Science and Technology Research Institute of MEM, Tianjin 300381, China; 3. Key Laboratory of Fire Protection Technology for Industry and Public Building, Ministry of Emergency Management, Tianjin 300381, China; 4. Tianjin Key Laboratory of Fire Safety Technology, Tianjin 300381, China)
  • Online:2023-11-15 Published:2023-11-15

摘要： 由于地下变电站空间密闭性较高、爆炸破坏结果严重，科学设置泄压成为保障其结构安全的重要因素。通过缩尺试验,对不同可燃气体量以及泄压面积下封闭空间中气体爆炸规律进行研究，采用计算流体力学软件FLACS对典型220 kV全地下变电站进行全尺寸建模，设置不同爆炸气体量和泄压面积，对主变压器室中可燃气体爆炸超压进行模拟计算。结果表明：随着可燃气体量的增加，在某一临界量爆炸超压会由缓慢增长转化为急剧增长；随着泄压面积的增大，爆炸超压增长的突变点对应的泄漏气体临界量与爆炸超压之间呈非线性关系。提出了220 kV地下主变压器室爆炸泄压超压与泄压面积的计算式，该计算式的计算误差约为11.27%。

关键词: 全地下变电站, 变压器室, 爆炸超压, 泄压面积, 计算式, FLACS, 可燃气体

Abstract: High confinement of the underground substation could reduce severe explosion, scientific setting of pressure relief has become one of an important factor to ensure the safety of underground substations. The basic law of gas explosion in confined room under different combustible gas volumes and pressure relief areas were studied by small-scaled experiments. A computational fluid dynamics software FLACS was used to model the typical 220 kV underground substation and calculate the explosion overpressure of the combustible gas in the main transformer chamber by setting different gas masses and relief areas. The results show that the explosion overpressure will change from slow growth to sharp growth at a critical mass point with the increase of combustible gas mass. A nonlinear relationship between the critical mass of the leakage gas and the explosion overpressure can be discovered with the increase of the pressure relief area. A correlation of explosion overpressure and pressure relief area of 220 kV underground main transformer chamber is proposed. with the error about 11.27%.

Key words: underground substation, transformer room, explosion overpressure, pressure relief area, calculation correlation, FLACS, combustible gas