Patent ID: 8276621

Claim:
A thermal insulation element for use in a pipe arrangement for transporting gases at high temperature comprising: an outer envelope of longitudinal axis, at least one fibrous type thermal insulation arranged in said envelope with said thermal insulation being encapsulated in the envelope, an inner jacket concentric with the outer envelope and intended to be in contact with the fluid to be transported, said outer envelope and said inner jacket having a first longitudinal end and a second longitudinal end opposite to the first longitudinal end, a male connector adapted to be connected to both the outer envelope and to the jacket at one longitudinal end thereof, a female connector adapted to be connected to both the outer envelope and to the jacket at the opposite longitudinal end, and with said female connector having portions which form an axially adaptable annular zone situated at the level of the female connector comprising a first and a second cylindrical surface that overlap and are able to slide against each other in the case of expansions of said pipe insulation element.