Device for fuelling motor vehicles with liquefied gas

A device for fueling motor vehicles with a fluid used as a fuel and composed of liquefied gas the device comprising:

• at least one storage container;
• a cooling device;
• at least one conveying device configured to feed the fluid from the at least one storage container to at least one fueling device for motor vehicles;
• and
• at least one line configured to supply the fluid to the fueling device,
• wherein the at least one line comprises a media-conveying central pipeline as a medium pipe and at least one additional media-conveying pipeline that is arranged concentrically with respect to the central pipeline and defines an annular space together with the media-conveying central pipeline, the media-conveying central pipeline and the at least one annular space being configured to supply and return the fluid or a gas flow,
• wherein the at least one additional media-conveying pipeline is surrounded by a jacket pipe,
• wherein the jacket pipe is thermally insulated from the at least one additional media-conveying pipeline and the media-conveying central pipeline and comprises a metal corrugated pipe,
• wherein the media-conveying central pipeline and at least one media-conveying annular space are not thermally insulated from one another and each comprise a respective metal corrugated pipe,
• wherein the device further comprises a leakage-monitoring device arranged in an outer annular space between the jacket pipe and the at least one additional media-conveying pipeline, and
• wherein the outer annular space comprises a sealed and evacuated insulation space thermally vacuum insulating the jacket pipe from the at least one additional media-conveying pipeline and the media-conveying central pipeline.