旋芯高压细水雾喷嘴研制及性能测试  

Development and performance test of high-pressure water mist nozzle with a distributor

作　　者：陈怀民[1] 侯达盘[1] 

机构地区：[1]集美大学机械与能源工程学院,福建厦门361021

出　　处：《消防科学与技术》2017年第3期342-344,共3页Fire Science and Technology

基　　金：福建省工业高校产学重大合作项目(2014H6019)

摘　　要：根据细水雾喷嘴雾化原理,设计和制造了旋芯式细水雾喷嘴并进行雾化试验测试喷嘴的雾化性能。介绍喷嘴旋转室半径及锥角、旋转室入口、出水口段、内表面粗糙度等的设计,分析结构尺寸变化对细水雾雾化特性的影响。试验结果表明,当喷雾压力处于高压工作范围时,旋芯式喷嘴所产生的细水雾雾滴SMD均小于100μm,属于超细水雾范畴;喷雾压力处于高压范围时,压力变化对喷嘴流量系数影响有限,影响喷嘴流量系数的主要是喷嘴出口直径。According to the principle of water mist atomization, a rotary core type water mist spray nozzle was designed and man ufactured. The atomization performance was experimentally tested. The design of rotary room radius and cone angle, rotary room entrance, outlet section and inner surface roughness were introduced. The influence of structure size on the atomization characteristics of water mist was analyzed. Test results showed that when the spray pressure is in the high pressure range, water mist droplet SMD of an in line distributor nozzle was less than 100 μm, and helongs to the category of fine water mist; with the spray pressure being in high pressure range, the pres sure changes effect on the discharge coefficient of flow nozzle was limited, and the discharge coefficient of the nozzle was mainly determined by the outlet diameter of the nozzle.

关 键 词：细水雾 旋芯式喷嘴 雾化特性 流量系数 

分 类 号：X924.4[环境科学与工程—安全科学] TU892[建筑科学]