Nexans

Michele Di Palma

Stephan Lange

Klaus Schippl

Christian Frohne

Mark Stemmle

Rainer Soika

Erik Marzahn

Thomas Merten

Ing Christian Frohne

Rainer Dr Soika

Christian Dr-Ing Frohne

Klaus Dipl-Ing Schippl

A pipeline to transport a frozen medium is indicated which has an outer transversely to its longitudinal direction undulated limiting pipe, arranged inside are at least one metal pipe for guiding the frozen medium as well as a cooling pipe composed of metal for guiding a second frozen medium. In the limiting pipe hollow areas are available for evacuation. Fitted inside the limiting pipe are at least two transversely to their longitudinal direction undulated metal pipes for guiding the frozen medium, which are each surrounded by a thermal insulation. During the operation of the pipeline the frozen medium is led in different directions through both the metal pipes. Attached around both the metal pipes and the cooling pipe is a pipe shaped closed sleeve composed of a thermally good conductive material that is in contact with the cooling pipe.

Flexible pipeline

An arrangement is provided for a helically corrugated pipe made of metal, which has an end face extending along a turn of the thread of its corrugation and a connecting element to be fastened to the pipe. The connecting element includes a pipe piece which has a helically extending inner surface corresponding to the turn of the thread of the corrugation of the pipe. The pipe piece is mounted on the pipe in the corrugation of the pipe. A metal ring is arranged on the pipe piece, where the pipe piece has sections with different inner diameters arranged one behind the other in the axial direction.

Arrangement with a metal pipe and a connecting element, as well as method of mounting the connecting element

An arrangement is provided with at least one superconductive cable and a cryostat surrounding the cable is disclosed. The cryostat includes at least one thermally insulated pipe which encloses the superconductive cable and a hollow space for conducting a cooling agent therethrough. The cryostat is constructed in the same manner as the superconductive cable located in the cryostat for connection to stationary parts of a transmission path for electrical energy. At each of the ends of the cryostat (KR) constructed for connection to the stationary parts of the transmission path, two spaced apart bellows are mounted in the cryostat (KR), and between the two bellows each of the two ends of the cryostat (KR) a thermally insulated and curved pipe piece is mounted belonging to the cryostat (KR).

Arrangement with at least one superconductive cable

An arrangement is provided for a helically undulated pipe made of metal, which has an end face extending along a turn of the thread of its undulation and a connecting element to be fastened to the pipe. The connecting element includes a pipe piece which has a helically extending inner surface corresponding to the turn of the thread of the undulation of the pipe. The pipe piece is mounted on the pipe in the undulation of the pipe. A metal ring is arranged on the pipe piece, where the pipe piece has sections with different inner diameters arranged one behind the other in the axial direction.

A coupling arrangement has a coupling body and a helically shaped undulated metal pipe which has an end face extending along a screw thread of its undulation. A metal holding ring is mounted on the connecting part resting against the latter, where the outer diameter of the holding ring corresponds approximately to the outer diameter of the pipe, where the end face of the holding ring facing the pipe extends along a screw thread corresponding to the screw thread of the pipe, and where the holding ring is connected in the mounted position, fixedly to the connecting part by resting fixedly and tightly against the end face of the pipe.

Coupling arrangement comprising a coupling body and a metal pipe, as well as method for assembly of the coupling body

A plug-in coupling for cryogenic lines is described, having at least two pipes () fitted one inside the other like a male/female connection while forming an annular gap (), in which plug-in coupling the pipes () are releasably connected to one another by a flange connection () located at their 'warm' end, the annular gap () between the two pipes () is sealed at the 'cold' end by an annular seal () and at the &#x201c;warm&#x201d; end by an annular seal () located in the region of the flange connection (), and the annular gap () is connected to a safety valve () in the region of the flange connection ().

Plug-in coupling for cryogenic lines

A line pipe for the transport of deep-frozen media, consisting of at least two corrugated metal pipes () arranged concentrically and at a distance from one another, an insulation layer () being arranged in the annular gap between the two metal pipes (), the annular gap being evacuated, and a closing valve () provided in the outer metal pipe () being connectable to a vacuum pump, the closing valve being welded, vacuum-tight, into a smooth-walled metal pipe () welded, vacuum-tight, to the exterior of the metal pipes (). The valve body () of the closing valve projects into the interior of the smooth-walled metal pipe () and is flush with the outer surface area of the smooth-walled metal pipe ().

Growing community of inventors

Springe, Germany

Michele Di Palma