An arrangement for use in adjoining a support structure to a pipe that passes through the support structure. The arrangement comprises a mount attachable to the support structure. Radial bellows are connected to the mount. The bellows are arranged in use to extend circumferentially around a pipe and be connectable thereto such that a volume is defined by the bellows, mount and pipe.

Systems and methods according to one or more embodiments are provided for providing a durable and thermally insulated duct network. A duct network may be provided by coupling two or more foam ducts to each other. In one example, a system includes a plurality of foam ducts and a plurality of foam bellows configured to couple the foam ducts to each other. The foam bellows include one or more bellow folds to allow an expansion and contraction of the foam ducts. A plurality of structural fastening systems couple the duct network to a structure of a vessel. The structural fastening systems allow for an axial movement of the duct network as the foam ducts expand and contract. Additional systems and methods are also provided.

An expansion joint fitting for conveying liquid includes a radially inner bellows defining a liquid-conveying passage for conveying liquid between the first and second longitudinal ends of the expansion joint fitting. A radially outer bellows is disposed radially outward from and extending around the radially inner bellows. An annular plenum is defined between the radially inner bellows and the radially outer bellows.

A flexible pipe element is provided formed as a metal bellows with at least one corrugated bellows section and a bellows brim, which forms one end of the metal bellows, and a connection element for connecting the metal bellows to a continuing pipe part or to a connector, with the connection element having a connection area for abutting a contact area of the bellows brim. An annular bulge is formed in the contact area of the bellows brim and/or in the connection area of the connection element projecting beyond an average level of the contact area and/or an average level of the connection area in order to form a linear seal between the contact area and the connection area. A method for producing such a flexible line part is also provided.

An expansion joint of the present disclosure includes: a first flange disposed outside a pipe; a second flange disposed outside the pipe and is disposed away from the first flange in an axial direction of the joint; a main bellows connected to the first and second flanges and in which a flow passage of a fluid is formed; and a balancing device connected to the first and second flanges outside the main bellows and applies a thrust force opposite to a thrust force, applied to the first and second flanges in the axial direction by the main bellows, to the first and second flanges, wherein the balancing device includes a fluid supply unit, an elastic portion connected to the fluid supply unit and is allowed to expand and contract in the axial direction, and a connection portion connecting the elastic portion to the first and second flanges.

A decompression heat-insulating pipe structure that can exhibit the desired heat-insulating performance and is easy to assemble. In the structure, a space between ends of inner and outer tubes is decompressed. The outer tube includes a first flange, which extends radially inward from an axially one end thereof, and a second flange, which extends radially outward from the axially other end thereof. The inner tube includes a third flange, which extends radially inward from an axially one end thereof and is opposed to the first flange at an axially inward position of the first flange, and a fourth flange, which extends radially outward from the axially other end thereof and being opposed to the second flange at an axially outward position of the second flange. First and second elastic seal members are disposed between the first and third flanges and between the second and fourth flanges, respectively.

A sealing system including a first end and a second end with flexible bellows extending therebetween. The first end includes a base plate with an inner ring having an inner diameter. The inner ring is configured to receive a pipe therethrough. The pipe has an outer diameter, which is smaller than the inner diameter of the inner ring. The bellows of the sealing system has a first length in a first position and second length in a second position. Upon axial expansion of the pipe, the bellows is configured to move from the first position to the second position. The sealing system may also comprise a mechanical protective element, such as a shroud which extends around the bellows. Movement of the bellows can be further limited with rods extending from the shroud to a surrounding substrate or a cable fixing a maximum distance between the pipe and the shroud.

The invention relates to a line element (100) having an inner element (IE), an outer element (AE) surrounding the inner element, and a sliding layer (131, 132) in the form of an anti-friction lacquer, which is arranged in the contact region on the inner element (IE) and/or on the outer element (AE).

A free-floating load ring for assembly into a flexible coupling having a convoluted bellows and a surrounding mesh sleeve, the ring captured by the sleeve at an end of the coupling and spacing the sleeve from the bellows when forces are applied to the coupling. Various rings can be added to existing non-load supporting or flexible couplings having no previous rings. The load ring is retained in place by engagement of coupling components with the ring without physical connection of the ring to any coupling component.

A flow management system includes an expandable device configured for attachment to a wall surface of a conduit and being adjustable between an expanded configuration and a collapsed configuration, an electric actuator in fluid communication with the expandable device, and a control module. The control module is configured to control the electric actuator to flow a current to the expandable device to expand the expandable device for compacting a flow blockage within the conduit to create a channel adjacent the flow blockage and to terminate a flow of the current to the expandable device to collapse the expandable device for opening the channel to a fluid flow within the conduit.