Relating to pipe
View Patent ↗A pipeline 100 comprising an outer rigid conduit 30 , which is formed of a composite material, the composite material being arranged such that thermal expansion in the longitudinal direction is an effective longitudinal CTE from zero to about −/+10×10 −6 ° K −1 .
1. A pipeline comprising
a. a composite pipe formed of composite material configured to convey cryogenic material wherein the pipe has an effective longitudinal coefficient of thermal expansion (“CTE”) from about −10×10 −6 ° K −1 to 0° K −1 and is not brittle at a cryogenic material temperature; and,
b. an inner tubular structure surrounded by the composite pipe and comprising;
i. a flexible hose disposed between an inner gripping member and an outer gripping member; and,
ii. an tubular axial strengthening sheath having a diameter and configured to elongate and to reduce its diameter when subjected to axial tension.
2. The pipeline of claim 1 further comprising insulation disposed between the composite pipe and the inner tubular structure.
3. The pipeline according to claim 1 , wherein the longitudinal CTE range is from about −4×10 −6 ° K −1 to 0° K −1 .
4. The pipeline according to claim 1 , wherein the longitudinal CTE range is from −2×10 −6 to about 0° K −1 .
5. The pipeline according to claim 1 , which is capable of withstanding internal pressures above 10 barg.
6. The pipeline according to claim 1 , which is adapted to be connected to a source of gas fluid.
7. The pipeline according to claim 1 , which is a subsea pipeline.