Device for connection of two double-wall pipes and hydrogen line including said connection device
AssigneesAirbus SAS, Airbus Operations GmbH
InventorsJulien Laverne, Jonathan Landolt
Life of this patent
Estimating the term…
Abstract
A device for connection of double-wall pipes including an interior connection system connecting the first and second interior pipes and an exterior connection system including a first part that cooperates with an end section of the first exterior pipe and a second part that cooperates with an end section of the second exterior pipe. The exterior connection system is configured so that at a first temperature at least one of the first and second parts exerts a contact force on the end section of the corresponding first or second exterior pipe greater than at a second temperature higher than the first temperature.
Claims11
A device for connection of a first pipe and a second pipe, both being double-wall pipes, the first pipe including a first interior pipe that has an end section and an end surface and a first exterior pipe spaced from the first interior pipe that has an end section and an end surface, the second pipe including a second interior pipe that has an end section and an end surface and a second exterior pipe spaced from the second interior pipe that has an end section and an end surface, the connection device comprising:
- an interior connection system for connecting the first and second interior pipes, and an exterior connection system for connecting the first and second exterior pipes, including a first part that cooperates with the end section of the first exterior pipe and a second part that cooperates with the end section of the second exterior pipe, the exterior connection system being made of a first material different from those of the first and second exterior pipes, the first material having a coefficient of expansion greater than those of the first and second exterior pipes, wherein the exterior connection system is configured so that at a first temperature at least one of the first and second parts exerts a contact force on the end section of the corresponding first or second exterior pipe greater than at a second temperature higher than the first temperature, wherein the connection device includes an annular space around the interior connection system and around at least a portion of each of the first and second interior pipes situated on either side of the interior connection system and at least one thermal insulation element positioned in the annular space and at least partly filling the annular space, wherein the insulation element occupies at least 75% of the annular space, the annular space having a remaining volume subjected to a vacuum, wherein the insulation element includes at least one mattress filled with microballs.
A device for connection of a first pipe and a second pipe, both being double-wall pipes, the first pipe including a first interior pipe that has an end section and an end surface and a first exterior pipe spaced from the first interior pipe that has an end section and an end surface, the second pipe including a second interior pipe that has an end section and an end surface and a second exterior pipe spaced from the second interior pipe that has an end section and an end surface, the connection device comprising:
- an interior connection system for connecting the first and second interior pipes, and
- an exterior connection system for connecting the first and second exterior pipes, including a first part that cooperates with the end section of the first exterior pipe and a second part that cooperates with the end section of the second exterior pipe, the exterior connection system including a sleeve that has a first part positioned around the end section of the first exterior pipe, a second part positioned around the end section of the second exterior pipe and an intermediate part situated between the first and second parts,
- wherein the exterior connection system is configured so that at a first temperature at least one of the first and second parts exerts a contact force on the end section of the corresponding first or second exterior pipe greater than at a second temperature higher than the first temperature,
- wherein the end sections of the first and second exterior pipes each have a male thread and an outside diameter greater than the outside diameters of the first and second exterior pipes apart from in the male threaded end sections,
- wherein the first and second parts of the sleeve each have a female thread matching the male thread of the end section of the corresponding first or second exterior pipe, an intermediate part of the sleeve having an inside diameter greater than the greatest outside diameter of the first or second exterior pipe to allow the sleeve to slide relative to said first or second exterior pipe, and
- wherein the connection device includes at least one sacrificial material inserted between the male thread of the exterior connection system and female thread of the end section of the corresponding first or second exterior pipe.
Dependencies are inferred from the claim text.