华北科技学院学报
華北科技學院學報
화북과기학원학보
JOURNAL OF NORTH CHINA INSTITUTE OF SCIENCE AND TECHNOLOGY
2014年
4期
19-24
,共6页
瓦斯煤尘爆炸%火焰传播%实验测试系统
瓦斯煤塵爆炸%火燄傳播%實驗測試繫統
와사매진폭작%화염전파%실험측시계통
gas and dust explosion%flame propagation%experiment test system
为了研究管道瓦斯煤尘爆炸火焰的传播机理，确定表征瓦斯煤尘爆炸的主要物理量的变化特征，本文构建了瓦斯煤尘爆炸的实验测试系统，主要包括管体系统、爆炸压力及火焰数据测量系统、配气系统、激光器触发延时系统、激光纹影系统、真空舱（实验前抽真空）。气路、数据采集电缆和电源线分别通过相互隔离的沟槽，并与充配气系统集成在控制台。实验段和过渡段均设置专用光学窗口，用于流场显示和光谱测量（组分、温度）。实验测试系统还设计了多通道的压力（压电和压阻传感器）和火焰速度测量和数据采集系统。该实验测试系统能够模拟煤矿内复杂燃烧、爆炸及其传播机理，因此，在煤矿瓦斯爆炸事故，研制阻爆和隔爆设备，勘察事故现场，瓦斯爆炸基础研究等方面，有着较为广泛的应用前景。
為瞭研究管道瓦斯煤塵爆炸火燄的傳播機理，確定錶徵瓦斯煤塵爆炸的主要物理量的變化特徵，本文構建瞭瓦斯煤塵爆炸的實驗測試繫統，主要包括管體繫統、爆炸壓力及火燄數據測量繫統、配氣繫統、激光器觸髮延時繫統、激光紋影繫統、真空艙（實驗前抽真空）。氣路、數據採集電纜和電源線分彆通過相互隔離的溝槽，併與充配氣繫統集成在控製檯。實驗段和過渡段均設置專用光學窗口，用于流場顯示和光譜測量（組分、溫度）。實驗測試繫統還設計瞭多通道的壓力（壓電和壓阻傳感器）和火燄速度測量和數據採集繫統。該實驗測試繫統能夠模擬煤礦內複雜燃燒、爆炸及其傳播機理，因此，在煤礦瓦斯爆炸事故，研製阻爆和隔爆設備，勘察事故現場，瓦斯爆炸基礎研究等方麵，有著較為廣汎的應用前景。
위료연구관도와사매진폭작화염적전파궤리，학정표정와사매진폭작적주요물리량적변화특정，본문구건료와사매진폭작적실험측시계통，주요포괄관체계통、폭작압력급화염수거측량계통、배기계통、격광기촉발연시계통、격광문영계통、진공창（실험전추진공）。기로、수거채집전람화전원선분별통과상호격리적구조，병여충배기계통집성재공제태。실험단화과도단균설치전용광학창구，용우류장현시화광보측량（조분、온도）。실험측시계통환설계료다통도적압력（압전화압조전감기）화화염속도측량화수거채집계통。해실험측시계통능구모의매광내복잡연소、폭작급기전파궤리，인차，재매광와사폭작사고，연제조폭화격폭설비，감찰사고현장，와사폭작기출연구등방면，유착교위엄범적응용전경。
The experiment test system of gas and coal dust explosion is constructed in this paper , which main-ly include body of pipe system , measuring system of explosion pressure and flame data , gas distribution sys-tem, delay system of laser trigger , laser schlieren system and vacuum chamber ( pumping vacuum before exper-iment), in order to study the mechanism of propagation for gas and coal dust explosion in pipeline and ensure the change characteristics of main physical qualities characterizing gas and coal dust explosion.Gas circuit, data acquisition cable and power line are integrated in console with gas filling and distribution system through isolated slots respectively.Special optical windows are set in both experimental and transition section , which are used for flow visualization and spectral measurement ( component and temperature ).Multichannel pressure ( piezoelectric and piezoresistive sensors ) , flame speed measuring and data acquisition systems designed.The experiment test system can simulate complex burning , explosion and mechanism of propagation in coal mine , so it has broad application prospects in studying equipment of anti -explosion and explosion-proof, surveying accident scene and basic research of gas explosion in gas explosion accident of coal mine .
