Workpiece air tightness detection device

The utility model discloses a workpiece air tightness detection device, which relates to the technical field of workpiece performance detection devices, solves the problems of low detection efficiency and low accuracy of detection results of the conventional workpiece air tightness detection device, and comprises a test box connected to a supporting bottom plate, a supporting frame is connected to the test box, a moving rod is connected to the supporting frame, a driving structure for driving the moving rod to move up and down is connected to the supporting frame, a connecting plate is connected to the lower portion of the moving rod, a workpiece containing groove is formed in the portion, over each cavity, of the connecting plate, and a cover plate is connected to the workpiece containing groove through a bolt assembly. An inflation inlet is formed in the cover plate; a temperature control structure is connected in each cavity; the detection efficiency is improved, and meanwhile, workers can conveniently com