Calibration auxiliary device for negative pressure container equipment

The utility model discloses a calibration auxiliary device for negative pressure container equipment. The calibration auxiliary device comprises a cover body, the cover body is conical; two handles are arranged on the upper surface of the cover body; a nut seat is embedded in the middle position of the cover body; a joint is arranged in the nut seat in a sleeving manner; the static and dynamic calibration device for the negative pressure container equipment is simple in structure, and solves the problem of static and dynamic calibration of the negative pressure container equipment. According to the utility model, the operation is simple, and effective calibration and measurement can be carried out on the pressure vessel equipment without any change and disassembly of the pressure vessel equipment. The inverted-cone-shaped closed pressure maintaining disc structure ensures the air tightness in the measuring process, further simplifies the operation, and can adapt to negative pressure equipment with more differ