Gas drainage drilling leakproofness detection device

The utility model discloses a gas drainage drilling leakproofness detection device, including cylindrical cavity, the one end opening of cylindrical cavity, a centre bore is opened to the centre of the other end, and open in the around the Center hole has the round air intake, takes out to adopt to manage and passes the centre bore inserts in the drilling on the rib to with hole sealing material hole sealing, central drill way installation round gasbag is inflated the back and is taken out to adopt to manage and combine closely, the open end of cylindrical cavity is fixed on the rib and is welded there is round gasbag groove, and the gasbag has been put to the gasbag inslot, and the gasbag is inflated the back and is combined closely with the rib, the cylindrical cavity is internal to be equipped with the round slide rail along the circumference, and the one end of telescopic link is passed through slider and is adorned on the slide rail, and the other end is equipped with the wind speed sensor, the gasbag is connected with the gasbag pump. Programmable controller and wind speed sensor, telescopic link and slider pass through the connecting wire contact. The leakproofness that can realize different drillings detects, confirms gas leakage position and air leakage, practicality, safety, accuracy, high efficiency.