间距及热敏性能对喷头控火性能影响的试验研究  

Experimental study on influence of sprinkler space and thermal sensitivity on suppression efficiency of sprinkler system

作　　者：倪照鹏[1,2] 彭磊[1,2] 黄益良[1,2] 杨丙杰[1,2] 王美南 文一明 彭玲龙 

机构地区：[1]公安部天津消防研究所消防规范研究室,天津300381 [2]建筑消防工程技术公安部重点实验室,天津300381 [3]远大可建科技有限公司,湖南湘阴410500

出　　处：《中国安全科学学报》2014年第10期48-53,共6页China Safety Science Journal

基　　金：公安部重点研究计划项目(201302ZDYJ014)

摘　　要：为研究受限房间内自动喷水灭火系统喷头布置间距及热敏性能对喷头的动作性能和控火效能的影响,采用公称动作温度均为68℃的快速响应喷头和特殊响应喷头,共开展11次实体火灾试验。试验房间的内部尺寸为7.8 m×7.8 m×2.73 m,喷头布置间距分别为3.6和3.9 m。试验结果表明,当喷头的布置间距相同时,快速响应喷头的动作时间比特殊响应喷头提前约15 s,且火场环境温度和燃料的烧损量均较特殊响应喷头低。快速响应喷头按间距3.9 m布置与特殊响应喷头按3.6 m布置相比,前者的喷头动作时间提早约5%,燃料箱的烧损率下降15%～19%。In total,11 full-scale fire tests were conducted to study the influence of sprinkler space and thermal sensitivity on activation characteristics and suppression efficiency of automatic sprinkler system.The test room had dimensions of 7. 8 m × 7. 8 m × 2. 73 m. Both fast response sprinklers and special response sprinklers with response temperature rating of 68 ℃ were included. The sprinkler spacing values of 3. 6 m and 3. 9 m were used in the tests respectively. The test results show that under the same spacing conditions,fast response sprinklers activated about 15 s earlier than special response sprinklers,and achieved lower room temperatures and less loss rate of combustible materials. Installed at a spacing of3. 9 m,fast response sprinklers was able to activate 5% faster and achieve 15%- 19% less loss rate of combustible materials than special response sprinklers at a spacing of 3. 6 m.

关 键 词：快速响应喷头 特殊响应喷头 热敏性能 喷头动作温度 时间响应指数(RTI) 

分 类 号：X932[环境科学与工程—安全科学]