A new active vertical sand trap is designed to implement the performance that airflows in all sampling tubes at different height are allowed simultaneously approach to the isokinetic state.

• 摘要提出了一种新型主动式竖直集沙仪，该集沙仪的最大优点是可以通过调节总抽气量使不同高度取样管同时趋于等动力取样状态。