Plug-in coupling

1. Plug-in coupling for the transfer of high-power energy and for the transfer of a fluid under pressure, comprising:

at least one coupler plug ( 2 ) and at least one coupler socket ( 3 ), in which the coupler plug ( 2 ) can be introduced into the coupler socket ( 3 ) at least to some extent to produce a coupled state and can be removed from the coupler socket ( 3 ) to produce a decoupled state, characterized in that the coupler socket ( 3 ) and the coupler plug ( 2 ) respectively comprise an inner conductor ( 4 , 5 ) which is electroconductive in at least some sections and which is surrounded by a fluid channel ( 6 ) in at least some sections and that the coupler socket ( 3 ) and the coupler plug ( 2 ) have means ( 7 , 8 ) for sealing the fluid channel ( 6 ) in a liquid-tight manner in the decoupled state and for producing a continuous fluid channel ( 6 ) in the coupled state, characterized in that the means are spring-loaded, movable valve bodies ( 7 , 8 ), characterized in that the valve bodies ( 7 , 8 ) in the coupled state are moved so that the plug-in coupling ( 1 ) forms a continuous fluid channel ( 6 ), characterized in that at least one of the valve bodies ( 7 , 8 ) is designed to produce an electroconductive connection between the inner conductors ( 4 , 5 ) of the coupler socket ( 3 ) and of the coupler plug ( 2 ), wherein the valve body ( 7 ) of the coupler plug ( 2 ) consists at least to some extent of the inner conductor ( 4 ), wherein the coupler socket ( 3 ) comprises a coupler socket housing ( 3 . 2 ), the valve body ( 8 ) being movable between the inner conductor ( 5 ) and the coupler socket housing ( 3 . 2 ).

2. The plug-in coupling according to claim 1 , characterized in that the valve body ( 8 ) of the coupler socket ( 3 ) has a sleeve-like design.

3. The plug-in coupling according to claim 2 , characterized in that an electrically conductive contact sleeve ( 11 ) is electrically connected with the valve body ( 8 ) of the coupler socket ( 2 ).

4. The plug-in coupling according to claim 3 , characterized in that the contact sleeve ( 11 ) surrounds the inner conductor ( 5 ) of the coupler socket ( 3 ) on a partial length and can be moved relative to said inner conductor, wherein the inner conductor ( 5 ) of the coupler socket ( 3 ) is embodied as having several parts, wherein the inner conductor ( 5 ) comprises at least two inner conductor elements ( 5 . 1 , 5 . 2 ) that are connected with each other in an electrically insulated manner.

5. The plug-in coupling according to claim 4 , characterized in that the at least two inner conductor elements ( 5 . 1 , 5 . 2 ) are connected with each other by an electrically insulating pin, in particular a ceramic pin ( 10 ).

6. The plug-in coupling according to claim 5 , characterized in that the two inner conductor elements ( 5 . 1 , 5 . 2 ) in the coupled state are connected in an electrically conductive manner by means of the contact sleeve ( 11 ).

7. The plug-in coupling according to claim 6 , characterized in that the contact sleeve ( 11 ) connecting the two inner conductor elements ( 5 . 1 , 5 . 2 ) in the coupled state is the contact sleeve ( 11 ) that is connected with the valve body ( 8 ) of the coupler socket ( 3 ).

8. The plug-in coupling according to claim 7 , characterized in that at least one electrically conductive contact sleeve ( 12 ) is provided for producing an electroconductive connection between the inner conductor ( 4 ) of the coupler plug ( 2 ) and the inner conductor ( 5 ) of the coupler socket ( 3 ) in the coupled state.

9. The plug-in coupling according to claim 8 , characterized in that the inner side of the contact sleeve ( 12 . 1 ) simultaneously forms a contact and a sealing surface, wherein the contact between the contact sleeves ( 11 , 12 ) and the inner conductors ( 4 , 5 ) of the coupler plug ( 2 ) and the coupler socket ( 3 ) consists respectively of ring-shaped spring contacts ( 13 ).

10. The plug-in coupling according to claim 9 , characterized in that the fluid is an electrically insulating coolant, in particular an insulating oil.

11. The plug-in coupling according to claim 10 , characterized in that in the coupled state the coupler plug housing ( 2 . 2 ) and the coupler socket housing ( 3 . 2 ) are connected in an electrically conductive manner and form the chassis ground, wherein the coupler plug ( 2 ) and the coupler socket ( 3 ) are designed so that during transition from the decoupled state to the coupled state, first the fluid connection and then the electrical connection between the coupler plug ( 2 ) and the coupler socket ( 3 ) is produced.

12. The plug-in coupling according to claim 11 , characterized by cooling of the inner conductors ( 4 , 5 ) by the fluid.

13. The plug-in coupling according to claim 12 , characterized by an electric load capacity of up to 300 kW at an electric current of up to 400 A.

14. An arrangement of at least two plug-in couplings comprising:

at least two coupler plugs ( 2 , 2 ′) and at least two coupler sockets ( 3 , 3 ′), in which the coupler plugs can be introduced into the coupler sockets at least to some extent to produce a coupled state and can be removed from the coupler socket ( 3 ) to produce a decoupled state, characterized in that the coupler socket ( 3 ) and the coupler plug ( 2 ) respectively comprise an inner conductor ( 4 , 5 ) which is electroconductive in at least some sections and which is surrounded by a fluid channel ( 6 ) in at least some sections and that the coupler socket ( 3 ) and the coupler plug ( 2 ) have means ( 7 , 8 ) for sealing the fluid channel ( 6 ) in a liquid-tight manner in the decoupled state and for producing a continuous fluid channel ( 6 ) in the coupled state, wherein the coupler plugs ( 2 , 2 ′) and the coupler sockets ( 3 , 3 ′) of the plug-in couplings are connected with each other so that their first coupler plug ends ( 2 . 1 , 2 . 1 ′) and their first coupler socket ends ( 3 . 1 , 3 . 1 ′) form one plane, characterized in that the means consist of a lever mechanism ( 33 ) or a gear.

15. The arrangement according to claim 14 , characterized in that means ( 33 ) are provided for simplified connection of the coupler plugs ( 2 , 2 ′) and the coupler sockets ( 3 , 3 ′) and for securing the coupled state.

16. The arrangement according to claim 14 , characterized in that a centering device ( 30 , 31 , 32 ) is provided that counteracts tilting of the plug-in coupling elements ( 2 , 2 ′, 3 , 3 ′) against each other.