摘要:
The liner (102) includes a rib formation (110) with a transverse section configured to mechanically lock the liner (102) to a concrete shell (109) and a joint (114) to allow the rib formation (110) to flex. The joint (114) for the rib formation (110) can comprise a first side (116) spaced apart from a second side (118) with each joined to the transverse section to allow each side to flex with respect to each other. The space (122) between the first side (116) and the second side (118) can be filled with a weld material to add rigidity to the rib formation (110) while allowing it to flex. Each of the first side (116) and the second side (118) can be combined at the other end to a shell. The combined rib formation (110) and shell are spirally wound to create the liner (102).
摘要:
Begehbares Vorpressrohr (10), insbesondere zum Transport von aggressiven Medien, umfassend ein Innenrohr (12) aus einem chemikalienbeständigen Material und ein Außenrohr (14) aus Beton, dadurch gekennzeichnet, dass das Innenrohr (12) von einem Faserverbundwerkstoff (13) gebildet ist, dass der Faserverbundwerkstoff (13) mindestens eine tragende Schicht (38, 40) aufweist, welche 50 Gew.-% bis 80 Gew.-% an Fasern umfasst, die in einer Umfangsrichtung (16) und/oder schraubenförmig, und zudem mehrlagig gewickelt sind, und dass die tragende Schicht (38, 40) 20 Gew.-% bis 40 Gew.-% an Matrixmaterial umfasst, welches auf Reaktivharz basiert.
摘要:
Pressure cast lined steel pipes comprise an annular concrete or mortar liner (14) along an inside diameter, and a metal shell (12) surrounding the liner, wherein the liner (14) is in direct contact with the metal shell (12). The wall thickness of the liner can be from 10 to 50 times the thickness of the metal shell The pipe may be coated with a dielectric material A mold assembly used to form the pipe includes an annular concrete or mortar composition chamber formed between the metal shell and an inner mold member Pressurized water is used in the mold assembly to pressurize the concrete or mortar composition and exert a desired pressure force onto the metal shell while the composition cures in the mold Once a desired degree of cure is achieved, the pressure is removed causing the metal shell to exert a desired compression force onto the cured liner
摘要:
A reinforcement of a coating of a cylindrical object, such as a steel pipe (10), takes the form of a wire construction (12). The wire construction (12) comprises a spiral wound wire. The spiral wound wire comprises different turns (14), which are connected to each other in a way to allow the wire construction to form diamond meshes when the wire construction is extended to cover the cylindrical object (10).