抽出式对旋风机隔流腔内瓦斯超限原因及解决对策  

Cause of Disallowed Gas Concentration in Flow-separation Chamber of Exhaust Contra-rotary Fan and Its Solution

作　　者：张福喜 张广勋[2] 李德文[2] 杜安平 

机构地区：[1]阳泉煤业集团公司,山西阳泉045000 [2]煤炭科学研究总院重庆分院,重庆400037

出　　处：《矿业安全与环保》2003年第2期44-45,49,共3页Mining Safety & Environmental Protection

摘　　要：针对国内矿用防爆对旋抽出式风机使用中出现的Ⅱ级电动机隔流腔内冷却风流瓦斯浓度超限而存在的安全隐患问题,介绍了一种能够有效解决该问题的负压腔体,该腔体的结构特点、工作原理、设计计算及应用效果。实验表明,采用负压腔体能有效控制主风流道的含瓦斯风流进入Ⅱ级电动机隔流腔。To counter the existence of unsafe hidden peril due to disallowed gas concentration in the cooling air in flow separation chamber of Class Ⅱ electrical motor during the operation of flame-proof mine contra-rotary exhaust fan in our country,the paper describes an effective negative-pressure flow-separation chamber for solving this problem and discusses the structural features,working principle,design computation and application effect of this chamber.Experiments showed that the use of negative-pressure chamber can effectively control the gas-containet air flow in the main air channel entering the flow separation chamber of Class Ⅱ elecric motor.

关 键 词：抽出式对旋风机 隔流腔 瓦斯超限 解决对策 

分 类 号：TD441[矿业工程—矿山机电]