SYSTEM FOR SEALED CONNECTION BETWEEN TUBULAR SECTIONS, IN PARTICULAR FOR THE SEALED CONNECTION OF A PIPE FOR FEEDING COMBUSTIBLE GAS AT HIGH PRESSURE WITH A PRESSURE REDUCER IN AUTOMOTIVE INTERNAL COMBUSTION MACHINES.

摘要

A system is described for sealed connection between a pair of tubular sections (3, 2a) intended to convey a gaseous fluid under pressure, wherein the sections are capable of relative orientation from and towards a preselected positioning at which they are rigidly connected to each other with a sealed connection. The system comprises nesting coupling means, respectively provided on one and the other of the tubular sections coaxially engageable with each other, gastight sealing means between the tubular sections, axial checking means (6, 7) between the nesting coupling means for holding one of the tubular sections relative to the other section in the direction of mutual axial coupling (X). The system also comprises removable locking means (10) between the sections (3, 2a) for rigidly locking the tubular sections to each other in the state of preselected relative positioning, wherein the locking means (10) for the relative orientation between the sections are independent of the axial checking means (6, 7), such that the gastight seal is ensured in the state in which the tubular sections are freely orientable with respect to each other without any action of the locking means.