METAL EXPANSION JOINT AND VIBRATION ABSORBER APPARATUS FOR PIPE SYSTEMS

摘要

The device comprises a bellows 1 and a first protective sleeve element 8 having a substantially radially end rounded end 13 and a second protective sleeve element 8 having a substantially radially- (6). The bellows (1) forms an end portion at both ends of the neck (2, 3). The cylindrical portion 12 of the first protective sleeve element 8 is surrounded by a cylindrical portion 10 and a lid portion 9 having a substantially radially end-bent annular end portion 11. Likewise, the cylindrical portion 25 of the second protective sleeve element 6 is surrounded by a cylindrical portion 15 and a lid portion 14 having an annular end 16 which is substantially radially end-bent. The necks 2 and 3 of the bellows 1 are interposed between the cylindrical portions 10, 12; 15 and 25 of the respective lid portions 9 and 14 and are provided with a first protective sleeve element 8 and a second protection The sleeve element 6 is welded thereto. The end portions 11, 13; 16, 17 of the end portions of the cover portions 9, 14 and the first protective sleeve element 8 and the second protective sleeve element 6 are brought into contact with each other to form the flanges 4 , 5) are formed.