Plugging device suitable for marine engineering air pipe tightness test

The utility model belongs to the field of ocean engineering, and particularly relates to a plugging device suitable for ocean engineering air pipe tightness test, which comprises a cubic structure, an air inlet is arranged at the top of the front end face of the cubic structure, handles are arranged on two sides of the front end face of the cubic structure, and an exhaust device is arranged on the front end face of the cubic structure below the handles. According to the plugging device suitable for the marine engineering air pipe tightness test, the cubic structure is arranged, the plugging device can be expanded after being inflated, the four faces of the plugging device are tightly attached to the inner wall of an air pipe, and the good plugging effect is achieved; by arranging the air inlet with the air pressure reverse sealing structure, leakage of the air inlet is avoided, and the sealing effect of the device is improved; by arranging the exhaust device, the exhaust efficiency of the exhaust pipe can be