Abstract: A continuous testing device for a water pipe, comprising a frame, a left fixed plate and a right fixed plate, a tested pipe section, a compensating pipe section, a central plate, two horizontal oil pressure cylinders, a vertical oil pressure cylinder, and a connecting tube. The left and right fixed plates provide fixed bases at left and right ends of the frame. The tested and compensating pipe sections are located between the left and right fixed plates. The tested pipe section is a tube body that allows monitoring. The compensating pipe section, separated from the tested pipe section by the central plate, has an inner space to be filled with liquid to exert a compensating axial force on the tested pipe section. The two horizontal oil pressure cylinders are respectively mounted next to upper and lower sides of the tested pipe section, exerting a horizontal force on the central plate. The vertical oil pressure cylinder is mounted below the central plate, exerting a vertical force on the central plate.

Abstract: An axial force blocking pipe joint, comprising an insertion part, a sleeve and several sealing rings. The insertion part is attached to a second pipe. The sleeve is attached to a first pipe, taking in the insertion tube. The sealing rings are mounted on the insertion tube, ensuring a tight connection thereof with the sleeve. The main characteristic of the present invention is that the sleeve has a far end part that forms an axial positioning part, which is located around the second pipe, leaving a gap. The axial positioning part has a blocking element at a far end which extends inwards and a plurality of axial positioning blocks. The plurality of axial positioning blocks are disposed in the gap and fit between a step at a remote end of the insertion tube and the blocking element, thus blocking the insertion tube from separating from the sleeve.