A flexible tube system having an end section formed from an inner rigid tube and an outer shell, and the end section is joined to a central flexible portion having an inner decoupler tube, and an outer shell bridge is joined to the outer shell and the flexible central portion to define an insulation space.

An expansion compensator are at least two axially extending elongate members, which combined, circumferentially extend around the expansion compensator while each elongate member individually circumferentially extends only part way around the expansion compensator.

The invention relates to an expansion joint (1) for joining two adjacent parts of a pipe. The expansion joint (1) comprises an expansion bellows (5), an expanded wall (2) and an inner sleeve assembly (8). The expanded wall (2) comprises a first wall part (3) and a second wall part (4), wherein the first wall part (3) and the second wall part (4) are spaced apart from each other axially by an axial gap. The expansion bellows (5) is connected to the first wall part (3) and to the second wall part (4) such that the axial gap between the first wall part (3) and the second wall part (4) is closed and such that the first wall part (3) and the second wall part (4) are connected flexibly. The expanded wall (2) and the inner sleeve assembly (8) limit at least one sealed chamber (9, 10) between each other, and the at least one sealed chamber (9, 10) is filled by a first gas.

A joint for coupling ducts, the joint including: a flexible conduit section extending along an axial direction from a first end to a second end; a first connector at a first end of the flexible conduit, arranged to releasably couple the flexible conduit section to a first duct; a first bearing member extending from the first connector, and forming a first bearing surface defining a first plane, wherein the axial direction passes through the first plane; a second connector at the second end of the flexible conduit, arranged to releasably couple the flexible conduit section to a second duct; a second bearing member extending from the second connector, the second bearing member forming a second bearing surface facing the first bearing surface and defining a second plane, wherein the axial direction passes through the second plane; a rod extending between the bearing surfaces.

A hose and rigid pipe connecting system used in a high pressure system comprises: a hose made up of connecting a core pipe and a corrugated pipe, the outer side of the corrugated pipe being wound and woven by metal wires; a rigid pipe; a transition joint connecting the hose and the rigid pipe; and a retaining ring buckled on the outer side of the hose and the transition joint. The invention has the advantages that the sealing performance between the hose and the rigid pipe can be greatly improved, and the problem that the connecting part of the hose and the rigid pipe can not bear pressure Or resist high and low temperatures is solved; besides, the axial tensile strength and sealing reliability are improved by winding and weaving metal wires on the outer side of the metal corrugated pipe and then welding with the core pipe.

A gimbal expansion joint includes a first clevis adapted to be secured to one end of a first piece of ducting, a second clevis adapted to be secured to an end of a second piece of ducting, and a gimbal arrangement to which the first and second clevises are pivotably connected to form a universal joint between the ends of the pieces of ducting. A flexible duct extends between the first and second clevises to form a passage for fluid communication between the ends of the first and second pieces of ducting. The flexible duct has a respective flange at each end, each flange providing an axially-directed face across which a clamping load is applied to affix the flange to a corresponding axially-directed face of the respective clevis.

A flexible coupling for a fluid-carrying pipe extends in use between a first pipe portion and a second pipe portion. The flexible coupling comprises a tessellation of first regions and second regions in which the first regions have higher stiffness than the second regions.

The invention relates to line elements (600) consisting of a multi-layer inner element (IE) and an outer element (AE), wherein the inner element (IE) and the outer element (AE) are in contact with each other at points, at lines, over part of the surfaces thereof, or over the full surfaces thereof. Furthermore, a frictional contact protection means extending over the component length is provided, or a frictional layer (121) is provided in the contact region of the inner element (IE) and the outer element (AE). The wear of the outer element (AE) caused by friction can thereby be minimized.

A decoupler includes a short bellows of ten or fewer convolutions, an internal liner spaced from the bellows internally and a cover spaced radially outward from the bellows providing an air gap both internally and externally of the bellows. The liner has a free-standing downstream end proximate a damper which is captured by a cover, inner damper ring and slide ring. Two decouplers are mounted in series to accommodate angular, axial and lateral displacement when operably connecting two end pipes and one central pipe.

A device for transferring fluid between two separate structures includes a rigid pipe with a double shell extending along a longitudinal axis. The pipe includes an outer-shell housing (in the inner vacuum space thereof), at least one inner duct for fluid transfer, and at first and second ends thereof, includes respective first and second rigid connections of the outer shell to the first structure and second structures, respectively. The first and second ends of the outer shell are rigidly connected to the at least one inner duct. The pipe comprises a system to compensate for movements in the longitudinal direction.