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 ›› 2022, Vol. 41 ›› Issue (11): 1487-1490.

• • 上一篇    下一篇

全氟己酮远距离喷射特征及射流特性研究

周天念，陈 杰，陈宝辉，吴传平   

  1. （国网湖南省电力有限公司防灾减灾中心 电网输变电设备防灾减灾国家重点实验室，湖南 长沙 410129）
  • 出版日期:2022-11-15 发布日期:2022-11-15
  • 作者简介:周天念（1989- ），男，四川万源人，国网湖南省电力有限公司防灾减灾中心电网输变电设备防灾减灾国家重点实验室工程师，博士，主要研究方向为电网设备火灾防治技术，湖南省长沙市榔梨镇龙华路，410129。
  • 基金资助:
    基金项目：国家电网公司科技项目(5216A019007H)

Study on long-distance spraying characteristics and jet features of perfluorohexanone

Zhou Tiannian, Chen Jie, Chen Baohui, Wu Chuanping   

  1. (State Key Laboratory of Disaster Prevention & Reduction for Power Grid Transmission and Distribution Equipment, Hunan Electric Power Corporation Disaster Prevention and Reduction Center, Hunan Changsha 410129， China)
  • Online:2022-11-15 Published:2022-11-15

摘要： 通过测试不同喷头类型、喷射压力下全氟己酮远距离喷射特征，获得了全氟己酮射流特性，可为其在阀厅等大空间火灾防治的应用提供指导。试验结果表明：要实现全氟己酮远距离喷射，应采用单喷孔喷头。DN16和DN28喷枪在0.8～1.0 MPa压强下，全氟己酮喷射距离达到18～22 m，但如果采用更大口径DN40喷枪，射流末端雾化明显，喷射距离会减小，此外水平角度更有利于远距离喷射全氟己酮。在大口径喷枪下，全氟己酮落地后覆盖范围远超水介质，范围达6～10 m。

关键词: 全氟己酮, 喷头, 喷射距离, 射流特性, 压力, 流量

Abstract: This study attempts to obtain the jet features of perfluorohexanone so as to provide a guidance for the application of perfluorohexanone in fire prevention for large space such as the valve hall. A series of experiments considering different nozzle types and injection pressures were carried out. Results demonstrated that a single orifice nozzle should be employed to achieve the long-distance injection of perfluorohexanone. The spraying distance can reach 18~22 m using the spraying guns of DN 16 and DN 28 under the pressure of 0.8~1.0 MPa. However, the atomization at the end of the jet flow was observed significantly when the spray gun with a larger diameter of DN 40 was used, consequently, the spraying distance was reduced. In addition, the horizontal angle was more conducive to acquiring a long-distance spraying of perfluorohexanone. The coverage of perfluorohexanone was far beyond that of aqueous medium and it was in a range of 6~10 m.

Key words: perfluorohexanone, nozzle, spraying distance, jet characteristics, pressure, flow rate