并介绍了一种适合强制循环方式的新颖的活动烟罩和烟罩密封形式，推荐了一种活动烟罩管道柔性连接件。
A new type of moving petticoat pipe structure and petticoat pipe seal which fit for forced circulation way is introduced. A kind of flexible fastening of moving petticoat pipe is also recommended.
大口径管道柔性内胀式密封圈及连接结构和方法。工作密封圈用侧面装有气料嘴的中空橡胶密封圈内充填物料而形成。
The inventive working seal ring is formed by filling the hollow rubber seal ring with a gaseous material mouth on its side with material.
柔性管道便于在紧凑的空间安装。
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