Relay sealing performance detection device

The invention discloses a relay sealing performance detection device, which comprises a detection device body, the detection device body comprises an air tightness tester and a test tool mold, the air tightness tester is installed on the detection device body, and the air tightness tester is connected with the test tool mold; the testing tool mold comprises an upper mold and a lower mold, the upper mold is arranged above the lower mold, the upper mold is connected with the detection device body in a lifting mode through an air cylinder, and the upper mold and the lower mold form a containing cavity matched with the relay. According to the invention, by arranging the air tightness tester and the test tool mold, air pressure dynamic monitoring can be realized, the change of quantitative air pressure during large leakage of the relay and the air pressure change rate during micro leakage can be monitored, the overall test time is shortened from original 10 minutes to within 10 seconds, and rapid detection of larg