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1·The packer and telescopic tube are designed to a whole body and V-shaped inflatable graphite sealing ring is used to form the sealing system, ensuring the sealing performance of.

它将封隔器与伸缩管设计成一体，采用V形膨胀石墨密封圈组成密封系统，确保伸缩管热力伸长时封隔器的密封性。

2·Furthermore, a dynamical model that the rod on the telescopic penetrator spread out from the tube, and a model of locking device were established too.

此外还建立了伸缩式双弹芯圆杆体伸出的动力学模型和双弹芯体的气压闭锁模型。

3·The side surface of a port of the lower tube is provided with a notch which is provided with a clamping and fixing device of the telescopic rod.

下管的 端口侧面开设有缺口，缺口处设有伸缩杆的卡固装置。

4·The utility model relates to a water pot with a rotary automatic-telescopic water suction tube and is mainly characterized in that a pot body is covered with a pot cover.

一种旋转式自动伸收吸水管的水壶，它包括：一具有容室和一开口端的壶身；