Turbomachine with cabin bleed air through a tube with ball joint

The engine has a jamb connected to an external case of a diffuser grid and an external shell (14) of the engine casing. A tube is placed between an orifice (22) of the jamb and an exhaust opening (23) of the shell. An end (61) of the tube is mounted in the opening by a ball joint connection free in rotation and locked in translation. An end (63) of the tube is mounted in the orifice by the connection free in rotation and translation.