A fluid-transferring expander, wherein a tube is disposed through a bladder structure, an expansion space is formed between the tube and the bladder structure, the tube is continuously extrudedly formed, the tube is formed with a first passage connected with a first fluid source and a second passage connected with a second fluid source and outside therein, and the tube is further formed with a through hole communicating with the expansion space and the first passage.

A fluid-transferring expander, wherein a tube is disposed through a bladder structure, an expansion space is formed between the tube and the bladder structure, the tube is continuously extrudedly formed, the tube is formed with a first passage connected with a first fluid source and a second passage connected with a second fluid source and outside therein, and the tube is further formed with a through hole communicating with the expansion space and the first passage.

A high pressure swivel system provides fluid communication on a turret-moored vessel between a swivel core member being in fixed rotational alignment with a seabed mooring system and a swivel revolving member being in fixed rotational alignment with the hull of the vessel. The revolving member has upper and lower radially extending surfaces. On each of the radially extending surfaces are a series of radially spaced apart pressure seals. Hydraulic barrier fluid pressure is regulated in each of the volumes formed between the pressure seals. The pressures in the volumes are regulated such that a process fluid pressure higher than could be tolerated by any one individual pressure seal is safely accommodated by sharing the high process fluid pressure between or among two or more of the radially spaced apart pressure seals.

A fitting for coupling to at least one pipe, comprising: a sleeve for receiving the pipe; at least one sealing member to provide a seal between the sleeve and the pipe; a pressure member for applying a pressure to the sleeve and to the pipe; gripper teeth provided on the pressure member and arranged to act on the pipe; and actuation means for exerting a pressure to the pressure member comprising a pressure ring acting on the pressure member through adjoining slanting contacting surfaces of said pressure ring and pressure member, respectively; wherein the at least one sealing member is positioned between the pressure member and the pipe;
wherein the at least one sealing member is connected with or pressed against the sleeve without being positioned between the pressure member and the sleeve.

A pipe coupling has an outer shell with a flexible inner liner therein. The liner is secured to the shell by a clamping arrangement, which uses inner rings at the ends of the shell and an inner ring intermediate of the ends. The inner rings are hydraulically expanded out to the shell to form a seal between the shell and the liner at the ends and to retain the liner to the shell at the intermediate ring. In use, compressed fluid is provided to cavities between the liner and the shell to force the liner to seal against a pipe joint. The intermediate inner ring prevents the intermediate portion of the liner from expanding into the pipe joint. A protective handle is provided.

A pipe coupling has an outer shell with a flexible inner liner therein. The liner is secured to the shell by a clamping arrangement, which uses inner rings at the ends of the shell and an inner ring intermediate of the ends. The inner rings are hydraulically expanded out to the shell to form a seal between the shell and the liner at the ends and to retain the liner to the shell at the intermediate ring. In use, compressed fluid is provided to cavities between the liner and the shell to force the liner to seal against a pipe joint. The intermediate inner ring prevents the intermediate portion of the liner from expanding into the pipe joint. A protective handle is provided.

A plug-type sleeve for fastening on an object which is, in particular, in the form of a rod, cable or pipe, and which includes an end which has an opening for receiving a section of the object and has a circumferential groove with annular seal which is composed of an elastomeric material arranged in it, it being possible for the plug-type sleeve to be placed against an outer surface of said section. The plug-type sleeve includes a substantially sleeve-like clamping element, which can be coupled to the annular seal in the longitudinal direction of the plug-type sleeve to shear, for axial compression and resulting radial constriction of the annular seal, wherein the clamping element is formed and designed such that external application of a fluid pressure medium causes axial extension of the clamping element.

A plug-type sleeve for fastening on an object which is, in particular, in the form of a rod, cable or pipe, and which includes an end which has an opening for receiving a section of the object and has a circumferential groove with annular seal which is composed of an elastomeric material arranged in it, it being possible for the plug-type sleeve to be placed against an outer surface of said section. The plug-type sleeve includes a substantially sleeve-like clamping element, which can be coupled to the annular seal in the longitudinal direction of the plug-type sleeve to shear, for axial compression and resulting radial constriction of the annular seal, wherein the clamping element is formed and designed such that external application of a fluid pressure medium causes axial extension of the clamping element.

One or more embodiments relate to a method and device able to maintain the integrity of pipelines, improving sealing and safety. One or more embodiments relate to the method and device that monitors leaked hazardous substances in the event of a leak. One or more embodiments relate to a pipeline connection seal device including a first pipe connector; a second pipe connector; and a vacuum-pumped interspace defined by at least the first pipe connector and the second pipe connector. The vacuum-pumped interspace reduces the pressure gradient across the pipeline connection seal device and monitors leaking hazardous substances and prevents them from escaping the seal device and going ambient.

One or more embodiments relate to a method and device able to maintain the integrity of pipelines, improving sealing and safety. One or more embodiments relate to the method and device that monitors leaked hazardous substances in the event of a leak. One or more embodiments relate to a pipeline connection seal device including a first pipe connector; a second pipe connector; and a vacuum-pumped interspace defined by at least the first pipe connector and the second pipe connector. The vacuum-pumped interspace reduces the pressure gradient across the pipeline connection seal device and monitors leaking hazardous substances and prevents them from escaping the seal device and going ambient.