| 压力螺旋型喷嘴雾化特性及灭火有效性实验 |
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| 引用本文： | 刘志超,余明高,郑立刚.压力螺旋型喷嘴雾化特性及灭火有效性实验[J].西南交通大学学报,2010,45(2). |
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| 作者姓名： | 刘志超 余明高 郑立刚 |
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| 作者单位： | 1. 西南交通大学机械工程学院,四川成都610031;河南理工大学安全科学与工程学院,河南焦作454003
2. 河南理工大学安全科学与工程学院,河南焦作,454003 |
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| 基金项目： | 国家自然科学基金，河南省杰出科研人才创新工程项目，河南省高等学校新世纪优秀人才支持计划 |
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| 摘 要： | 为了优化压力螺旋型喷嘴参数,设计了压力螺旋型细水雾灭火喷嘴并进行了实验,分析了压力螺旋型喷嘴设计参数、系统压力和添加剂对雾化特性的影响.结果表明:当系统压力从0.5 MPa增加到1.5 MPa时,细水雾的索太尔直径减少8%;水中的添加剂可以降低雾的索太尔直径1.3%~15%;雾场中雾的索太尔直径越大,粒径分布越宽;粒径体积分数分布曲线有向大粒径方向移动的趋势;雾的速度与系统压力成近似线性增大关系;当喷嘴结构设计不合理时,喷嘴下游平面上的雾通量分布会不均匀,对熄灭火灾不利.
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| 关 键 词： | 细水雾 压力螺旋型喷嘴 雾化特性 测量 灭火 |
Experimental Study on Spray Characteristics and Fire Suppression Performance of Pressure Swirl Nozzle |
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| LIU Zhichao,YU Minggao,ZHENG Ligang.Experimental Study on Spray Characteristics and Fire Suppression Performance of Pressure Swirl Nozzle[J].Journal of Southwest Jiaotong University,2010,45(2). |
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| Authors: | LIU Zhichao YU Minggao ZHENG Ligang |
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| Institution: | LIU Zhichao1,2,YU Minggao2,ZHENG Ligang2(1.School of Mechanical Engineering,Southwest Jiaotong University,Chengdu 610031,China,2.School of Safety Science , Engineering,Henan Polytechnic University,Jiaozuo 454003,China) |
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| Abstract: | A pressure swirl nozzle for water mist fire suppression was developed and experimentally studied to optimize the parameters of the nozzle.The influences of the design parameters,the operating pressure,and the additive to plain water on spray characteristics were also investigated.The results show that the Sauter mean diameter(SMD) of droplets was decreased by 8% when the operating pressure was increased from 0.5 to 1.5 MPa;and that adding additive in water could decrease the SMD by about 1.3% to 15%.What's ... |
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| Keywords: | water mist pressure swirl type nozzle spray characteristics measurement fireextinguishment |
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