Sealing detection device applied to tank welding quality

The invention provides a sealing detection device applied to tank body welding quality, and relates to the field of tank body sealing detection, the sealing detection device comprises a supporting table, an air pressure detection mechanism, an air tightness detection piece and a bearing table, and the air tightness detection piece comprises an annular detection pipe, a connecting disc and a second sealing ring. When the sealing detection device applied to the welding quality of the tank body detects the tank to be detected, when the barometer detects the change of a pressure value and bubbles appear in the detection liquid, air leakage at the joint of the detection pipe and the tank to be detected can be judged, and when the detection liquid does not change and the barometer detects the change of the pressure value, the air leakage is judged. When the barometer detects that the air pressure changes, it can be judged that the sealing performance of the to-be-detected tank is unqualified, that is, when the baro