A connector for a pipeline, in particular for conveying hydrocarbons, extends along a longitudinal axis and has a gripping portion configured to be fitted around and clamped to the outer face; a sleeve portion, which is mounted in sliding manner to the gripping portion; a metal front gasket configured to be placed between the front end face and a face of the sleeve portion; and linear actuators connected with the gripping portion and the sleeve portion to axially compress the metal front gasket between the front end face of the pipeline and the face of the sleeve portion.

A system for making a connection between a first tubular member and a second tubular member having coincident bores for conveying a fluid, the connection having an axis in the general direction of flow of said fluid therethrough, the system comprising a connection (1) and a tensioning tool (100), the connection having a first tubular end (6) comprising a first end flange (16) having an end face (17) and a collar (20) comprising a sleeve (21) and an end stop (30) fixed to the sleeve (21), said sleeve (21) arranged about said flange (18) and said end stop (30) arranged about said tubular end (6), said collar (20) slideable along said tubular end (6), the connection further having a second tubular end (7) comprising a second end flange (43) having an end face (45) and a locking nut (50) about and slideable along said first tubular end (7), the tensioning tool (100) for applying axial tension to said collar (30) relative to said second tubular end (7) characterised in that at least one of said sleeve (20) and said second tubular end (7) has a set of parallel circumferential grooves (23,47) therein and said tensioning tool (100) has a set of ridges (142), the system comprising the steps of moving said set of ridges (142) into said set of grooves (23,47) and applying an axial tension to said collar (20) relative to said second tubular end (7).

The embodiments of the present disclosure provide a detachable anti-vibration sealing protection device for a pipe flange. The protection device includes a casing, wherein left and right end surfaces of the casing have through holes for the pipeline to pass through, and the casing has an accommodation cavity for placing the flange; a first shock absorption assembly for radial shock absorption of the flange; and a second shock absorption assembly which is installed in a one-to-one correspondence with the flange and is configured for axial shock absorption of the corresponding flange. The first shock absorption assembly and the second shock absorption assembly are installed in the accommodation cavity.

A connector for use in an ultra-high vacuum system is disclosed herein. The connector has a metal conduit section with a first hardness, a metal fitting with a second hardness greater than the first hardness of the conduit section, and a metallic reaction-inhibiting barrier positioned between the conduit section and the fitting to sealingly attach the fitting to the conduit section. Oxide formation on the surface of the metal conduit section proximal to the reaction-inhibiting barrier is prevented either mechanically or via treatment with an oxide inhibitor. The reaction-inhibiting barrier is selected from a group of metals that will substantially inhibit metallic and chemical interaction between the conduit section and the fitting under ultra-high vacuum, temperature cycling, and reactive chemical conditions.

The present disclosure relates to an apparatus for connecting to the end of a duct, the apparatus comprising: an outer ring having a central axis (C) and an inner surface extending between a first axial end and a second axial end of the outer ring; and an inner ring positioned within the outer ring and having a central axis (C) and an outer surface extending between a first and second axial end of the inner ring. A gap is provided between the outer surface of the inner ring at its first end and the inner surface of the outer ring at its first end, the gap extending in the direction of the second ends of the inner and outer rings.

Techniques for implementing and/or operating a pipeline system. The pipeline system includes a pipe segment, in which the pipe segment includes tubing that defines a pipe bore and a fluid conduit in a tubing annulus, and a pipe fitting to be secured to the pipe segment. The pipe fitting includes a fitting body that defines a fitting bore, a fitting jacket implemented circumferentially around the fitting body to define a tubing cavity, in which the tubing of the pipe segment is to be inserted into the tubing cavity and the fitting jacket is to be conformally deformed around the tubing of the pipe segment, and a fitting liner secured in the fitting bore of the pipe fitting such that a body section of the fitting liner is secured directly against the fitting body to facilitate blocking a solid particle in a slurry that flows therethrough from contacting the fitting body.

Techniques for implementing and/or operating a pipeline system. The pipeline system includes a pipe segment, in which the pipe segment includes tubing that defines a pipe bore and a fluid conduit in a tubing annulus, and a pipe fitting to be secured to the pipe segment. The pipe fitting includes a fitting body that defines a fitting bore, a fitting jacket implemented circumferentially around the fitting body to define a tubing cavity, in which the tubing of the pipe segment is to be inserted into the tubing cavity and the fitting jacket is to be conformally deformed around the tubing of the pipe segment, and a fitting liner secured in the fitting bore of the pipe fitting such that a body section of the fitting liner is secured directly against the fitting body to facilitate blocking a solid particle in a slurry that flows therethrough from contacting the fitting body.

A polymer-lined fluid transmission line includes various structures, including a first polymer-lined pipe, a second polymer-lined pipe, and one or more sleeve retainers installed at a pipe junction between the polymer-lined pipes. Among other things, the sleeve retainers may include one or more protuberances to frictionally engage the polymer-lined pipes or a one or more portions that protrude into a space between the polymer-lined pipes to help retain and protect polymer sleeves.

A polymer-lined fluid transmission line includes various structures, including a first polymer-lined pipe, a second polymer-lined pipe, and one or more sleeve retainers installed at a pipe junction between the polymer-lined pipes. Among other things, the sleeve retainers may include one or more protuberances to frictionally engage the polymer-lined pipes or a one or more portions that protrude into a space between the polymer-lined pipes to help retain and protect polymer sleeves.

A joint assembly for joining two pipes together comprises first and second liners and first and second pipe flanges. Each liner includes a sleeve and a liner flange with the liner flange coupled to one end of the sleeve. The first liner may be positioned within a first pipe and the second liner may be positioned within a second pipe. Each pipe flange is of generally annular disc shape with an inner surface, an opposing outer surface, an inner edge, and a radially-spaced outer edge. Each pipe flange includes an annular outer recess formed on the outer surface adjacent to the inner edge. The first pipe flange may be coupled to one end of the first pipe and the second pipe flange may be coupled to one end of the second pipe. Each liner flange may be positioned within the outer recess of a successive one of the pipe flanges.