The whole equipment has a close agile construction and easy to dismantle, assemble, move and adjust.This paper recommends emphatically on airproof design aim to decrease air leaking.

• 设计的整体装置要求结构紧凑、轻巧，便于拆装、移动与调整，著重介绍了其中减少漏气量方面的气密性方案设计。