Coupling for feeding a heat-exchange medium to a rotating body

摘要

A coupling for supplying a heat-exchange liquid to a load has a shaft extending from the load and centered on the axis. A nonrotating housing surrounding the shaft at the tube end has a connection so that the heat-exchange liquid can be pumped into the load. A roller bearing is engaged between the housing and the shaft axially between the opening and the load. Respective seal rings rotationally fixed on and sealed to the housing and the shaft between the bearing and the opening bear axially on one another. A cooling sleeve on the housing surrounds and extends axially past the seal rings. An insulator has a part closely radially surrounding the shaft between the seal rings and the opening and forming therewith a small gap through which the heat-exchange liquid can flow.