关于爆炸性气体、粉尘同时存在的危险场所防爆问题

Some Aspect to Ex Equipment Used in Hazardous Areas Present Explosive Gas and Combustible Dust Simultaneous

随着科技的深入发展,爆炸性气体及爆炸性粉尘并存场所中的防爆问题日益凸现出来。文章以并存场所防爆电梯的定货为例,对所提定货要求不全面现象及技术参数存在的问题等进行了讨论。着重强调了并存场所的防爆要求;得出了并存场所设备必须为同时满足气体及粉尘防爆要求并获得防爆合格证的复合型产品,才能确保防爆安全的结论。

With the development of science and technology, the special ease where explosive gas and combustible dust present simultaneous is emerged more and room. This article, taking a order of Ex elevator which to be used in location where explosive gas and combustible dust present simultaneously （hereafter it is called as G/D location）, points out the items and requirements in this order for this case should be covered completed, especially for the technical data.By this special case, the authors emphas- ize the requirements for explosion protection, and achieve the conclusion that the pxeduct should be met the requirements both of gas and dust, indicated with double Ex - markings for the combined structure of equipment.