Pipe fitting sealing performance detection device

The invention provides a pipe fitting sealing performance detection device. The device comprises a bracket; the bracket is provided with a cross beam; the cross beam is provided with a vertical lifting device; the lower end of the lifting device is connected with a lifting frame; the lifting frame is provided with at least one set of clamping mechanism; each clamping mechanism includes a movable plate and a fixed plate which are oppositely disposed; the opposite sides of the movable plate and the fixed plate are respectively provided with sealing pads; an air inlet hole is formed in at least one of the movable plates or fixed plates; the air inlet is connected with an air source; a water tank is arranged below the lifting frame; and the lifting frame can enter the water tank through the lifting device. With the pipe fitting sealing performance detection device of the invention adopted, a detection result is clearer and can be directly understood by a user; wrong detection results can be nearly avoided; and de