Zero-leakage static pressure box for air leakage detector

The utility model discloses a zero-leakage static pressure box for an air leakage detector. The zero-leakage static pressure box comprises a box body and a sealing mechanism, an air inlet pipe is arranged in an air inlet formed in the upper end of the box body, a connecting pipe is arranged in a connecting opening formed in the left end of the box body, mounting holes are formed in the ends, away from the center in the box body, of the air inlet pipe and the connecting pipe, and guide sliding grooves are formed in the upper end and the right end of the box body correspondingly; the sealing mechanism is arranged in the guide sliding groove, the sealing mechanism is rotationally connected to the interior of the air inlet pipe and the interior of the connecting pipe through bearings, and the sealing mechanism comprises a vertical plate, a transverse plate, a first limiting plate, a connecting plate, a fixing plate, a second limiting plate and a guide sliding column. The positions of the first limiting plate and