Intermediate coupling for connecting rigid-pipe elements for conveying a fluid, and associated pipe network and assembly method

摘要

The invention relates to a coupling that comprises an inner rigid shell (60) and an electric connection line (68A, 68B) for heating the fluid flowing in the inner shell (60). The coupling (10) comprises a rigid outer shell (62) arranged around the inner shell (60), the outer shell (62) and the inner shell (60) defining an intermediate space (64) therebetween, said intermediate space containing the electric line (68A, 68B), a thermal insulation layer (66) being arranged in the intermediate space (64).