Device for measuring nitrogen sealing performance

The utility model relates to the technical field of aero-engines, in particular to a device for measuring nitrogen sealing performance, which comprises a tool shell, a main door core cavity is arranged in the tool shell, a gas circuit is arranged at the bottom of the main door core cavity, and an auxiliary door plug cavity is arranged on the right side of the gas circuit. Through the arrangement of the tool shell, the main door core cavity, the gas circuit, the auxiliary door plug cavity, the main lining, the first sealing ring, the first spring, the cover plate, the clamping ring, the main door plug, the auxiliary lining, the second sealing ring, the adjusting ring, the auxiliary door column, the second spring and the limiting clamping ring, the operation procedure is simplified, and the working time is greatly shortened; the production safety of parts and operators is guaranteed while the production efficiency is improved, the maintenance damage rate is reduced, the maintenance quality risk is reduced, and