摘要
为指导煤矿瓦斯输送管道水封阻火泄爆装置的正确设计和使用,采用DN500、DN700两种瓦斯爆炸试验管道系统,对管道内不同浓度瓦斯爆炸压力火焰传播规律及2种管径水封阻火泄爆装置阻火泄爆性能进行研究。结果表明:水封阻火泄爆装置安装位置和有效水封高度是影响阻火泄爆性能的关键因素,水封桶内气体流速决定了水封高度和装置阻力损失。为保证阻火泄爆性能,应在装置上设置可靠的水位监测控制系统,管径小于DN500的装置水封桶气体过流面积应大于输送管道过流面积的4倍;使用时,装置安装位置距离爆炸点不大于30 m,控制输送管道气体流速不超过10 m/s。
In order to guide a correct design and application of water sealing fire barriering and explosion venting device applied to the mine gas transport pipeline,gas explosion test pipeline system with two different diameters of DN500、DN700 were applied to the experi-ment study on the pressure and flame spreading law of different density gas explosion,and the fire barriering and explosion venting perform-ances.The results showed that an installation location and the effective water sealing height would be the key factor affected to the fire bar-riering and explosion performances.The air velocity in water sealing tank determined the water sealing height and resistance lost of the de-vice.In order to ensure the fire barriering and explosion venting performances,a reliable water level monitoring and control system should be installed on the device.The gas flow area of the water sealing tank of device with pipe diameter below DN500 should be four times larger than the gas flow area of the gas transport pipeline.During the application,the installation location of the device should have a distance not over 30 m to the explosion location and the gas velocity in the gas transport pipeline should be controlled not over 10 m/ s.
出处
《煤炭科学技术》
CAS
北大核心
2014年第8期29-32,共4页
Coal Science and Technology
关键词
煤矿瓦斯
瓦斯爆炸
爆炸特性
水封阻火
泄爆
mine gas
gas explosion
explosion features
water sealing fire barriering
explosion venting
