直升机灭火系统管网压力和阻力特性试验研究  

Experiment Study on Pressure and Resistance Characteristics of Helicopter Fire Extinguishing System

作　　者：李松松 李春[1] 吴燕燕[1] LI Songsong;LI Chun;WU Yanyan(China Helicopter Research and Development Institute,Jingdezhen 333001,China)

机构地区：[1]中国直升机设计研究所,江西景德镇333001

出　　处：《直升机技术》2022年第4期14-18,共5页Helicopter Technique

摘　　要：灭火系统管网的压力时间特性和阻力特性对灭火剂的快速释放和喷放后灭火剂浓度维持时间有重要影响。通过对直升机灭火系统灭火剂喷射过程进行试验研究,分析了高压充装系统和低压充装系统的压力时间特性和阻力特性,以及在高压系统和低压系统下灭火剂典型喷放过程和在各喷放阶段的灭火剂流动状态;通过对阻力特性的研究,分析了灭火瓶阀门、双单向活门、灭火管路等对系统阻力的影响,并给出后续灭火系统设计时,减少系统阻力,提高灭火剂释放速度的措施。The characteristics of pressure and resistance of the fire extinguishing system pipe network have important influence on the rapid release of fire extinguishing agent and the maintenance time of fire extinguishing agent concentration.This article analyzed the pressure and resistance characteristics of high-pressure charging system and low-pressure charging system,and the typical spraying process of extinguishing agent in high-pressure and low pressure system and the flow state of extinguishing agent in each spraying state of the spraying process of extinguishing agent in helicopter fire extinguishing system.The influence of fire cylinder valve,double one-way valve and fire extinguishing pipe on the system resistance were analyzed through the research on the resistance characteristics,and the measures to reduce the system resistance and improve the release speed of the extinguishing agent were obtained when the fire extinguishing system is designed.

关 键 词：灭火系统 压力特性 阻力特性 

分 类 号：V228.6[航空宇航科学与技术—飞行器设计]