排水管道闭气检验用板式密封管堵

SEALED PLUG FOR PRESSURIZING SEWER TESTING

管堵封堵闭气管道时,具有承压和封严管道两种作用,本文作者利用螺旋胀紧和空芯胶圈充气膨胀作用原理,试制成功了体积小、效率高的板式密封管堵.

There are two functions of plug in pressurizing sewer leakage testing, standing pressure and sealing. A small in size and high effective plug has been made by the author utilizing the principles of screw stretching and expanding of gum tube filling with pressurized air.