| 摘要 |
A sealed flange joint for high pressure and/or high purity fluid channels comprises a first flange (10) with a first fluid channel (12) and a cylindrical front cavity (14). The front cavity (14) is axially delimited by a ground surface (18) and radially by a peripheral surface (20). The first fluid channel (12) passes axially through the first flange (10) to open into the ground surface (18). A polymer seal ring (30) has a radial outer surface (32) and a radial inner surface (34), and is fitted into the cylindrical front cavity (14) so that its radial outer surface (32) engages the peripheral surface (20) of the front cavity. A second flange (16) is removably fixed onto the first flange (10), and has a second fluid channel (22) in axial continuation of the first fluid channel (12). The second flange (16) has an axially protruding cylindrical front nipple (24) with a conical head (26), the second fluid channel (22) axially opening into an end surface (28) of the conical head (26). The conical head (26) engages the radial inner surface (34) of the seal ring (30) to radially press the latter with its radial outer surface (32) against the peripheral surface (20) of the front cavity (14). |
