Pipeline gas leakage detection device for gas sealing

The utility model relates to the technical field of pipeline gas leakage detection devices, and discloses a pipeline gas leakage detection device for gas sealing, which comprises a first box body, a second box body is hinged to the top of the first box body through a hinge, first grooves are formed in the tops of the two sides of the first box body, and first sliding grooves are formed in the inner sides of the first grooves; according to the utility model, the first box body, the second box body, the first groove, the first chute, the second groove, the second chute, the first plugboard, thefirst slide block, the second slide block and the second slide block are arranged; an existing air leakage detection device can not carry out detection according to diameters of different pipelines. The air leakage detection device solves the problem that a large amount of time and labor are wasted in the using process due to the fact that an existing air leakage detection device cannot detect airleakage according to the