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 ›› 2024, Vol. 43 ›› Issue (10): 1443-1449.

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不同结构压力式比例混合器的流动特性研究

王海娟1,2,3, 罗宗军1,2,3, 田立伟1,2,3, 经子彤1,2,3   

  1. （1. 应急管理部天津消防研究所,天津300381；2. 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；3. 天津市消防安全技术重点实验室，天津 300381）
  • 收稿日期:2023-11-20 修回日期:2024-04-08 出版日期:2024-10-15 发布日期:2024-10-15
  • 作者简介:作者简介：王海娟(1986- )，女，应急管理部天津消防研究所助理研究员，硕士，主要从事消防产品检测及标准化工作，天津市南开区卫津南路110号，300381，wanghaijuan@tfri.com.cn。

Study on flow characteristics of pressure proportioner with different structure

Wang Haijuan1,2,3, Luo Zongjun1,2,3, Tian Liwei1,2,3, Jing Zitong1,2,3   

  1. (1. Tianjin Fire Science and Technolog Research Institute of MEM, Tianjin 300381, China; 2. Key Laboratory of Fire Protection Technology for Industry and Public Building, Ministry of Emergency Management, Tianjin 300381, China; 3. Tianjin Key Laboratory of Fire Safety Technology, Tianjin 300381, China)
  • Received:2023-11-20 Revised:2024-04-08 Online:2024-10-15 Published:2024-10-15

摘要： 结合压力式比例混合器特点建立了3种不同结构的节流部件几何模型，采用Fluent软件对含有不同节流部件的比例混合器内部流场进行数值模拟计算，分析在设计工况下的压力分布和速度分布状态，并通过试验对3种不同结构比例混合器的混合比和压力损失进行了研究，分析不同压力式比例混合器结构特性对主要性能参数的影响。在模拟和试验结果对比验证中，在大流量下压力损失相对误差在±10%以内，为比例混合器设计计算、选型和结构优化提供了理论参考。

关键词: 压力式比例混合器, 节流部件, 压力损失, 混合比, 流动特性

Abstract: In this paper, geometric models of throttling parts with three different structures are established based on the characteristics of pressure proportioner. The numerical simulation of the proportioner with different throttling parts is carried out by using Fluent software to analyze the pressure distribution and velocity distribution under design conditions.And through experiments, the mixing ratio and pressure loss of the three proportioner with different structures are studied. The influence of the structure characteristics of different pressure proportioner on the main performance parameters are analyzed. In the comparison of experimental and simulation results,the relative error of pressure loss under high flow rate is within ±10%, which provides a theoretical reference for the design calculation, selection and structure optimization of the proportional mixer.

Key words: pressure proportioner, throttling part, pressure loss, mixing rate, flow characteristics