Static pressure device

The utility model relates to a static pressure device. The static pressure device comprises a static pressure box, an air port, a first connecting piece and a second connecting piece, the static pressure box is provided with an opening and a cavity, the air port comprises a body and a protruding part, the protruding part extends out of the end of the body, a first groove is formed between the body and the protruding part, the first connecting piece comprises a first part and a second part, and the second part is perpendicularly connected with the first part. One end of the first part is arranged in the first groove, the end, with an opening, of the static pressure box abuts against the other end of the second part and the other end of the first part, the second connecting piece is provided with a third part and a fourth part, the third part is provided with a second groove, and the fourth part is formed by extending outwards from the side wall of the second groove; the third part is used for being arranged in