Air supply pipe joint leakage detection alarm device

The invention discloses an air supply pipe joint leakage detection alarm device. The air supply pipe joint leakage detection alarm device comprises a sealing capsule, a piezoelectric plate, collecting rings and an alarm, and the sealing capsule wraps an air supply pipe joint; the piezoelectric plate is arranged on the lining of the sealing capsule; the collecting rings are arranged at the two ends of the piezoelectric plate; and the alarm is arranged on the outer side of the sealing capsule and is electrically connected with the collector rings. Air leakage of the air supply pipe joint is completely eradicated; leakage of an air supply pipe system in the running process of a vehicle is found in time, and alarm information is transmitted to the vehicle for centralized display; and compared with a traditional leakage checking method, environmental influence is avoided, the working efficiency is improved, the labor cost is reduced, and the labor intensity is reduced. 本发明公开供风管接头泄露检测报警装置，供风管接头泄露检测报警装置包括：密封胶囊，包裹在供风