Liquid metal slip-ring arrangement for a dynamo electric machine
AssigneeGeneral Electric Company
InventorsAlbert Benjamin John Reece, Anthony John Walkden
Life of this patent
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Abstract
An alternating current generator of the kind having a superconductive direct current field winding wherein: the field winding is carried on the stator; the armature winding is carried on the rotor; shaft and current collection from the armature winding is effected via a liquid metal slip-ring arrangement. The invention also provides a liquid metal slip-ring arrangement, for use with dynamo electric machines, comprising a first annular member which rotates with the machine rotor, and a non-rotating second annular member which is electrically connected to the first annular member via the liquid metal of the slip-ring arrangement, and arranged to move axially with the first annular member during axial movement of the rotor.
Claims7
A dynamo electric machine including:
- A. a rotor shaft;
- B. a member supporting the rotor shaft;
- C. a winding carried on the rotor shaft;
- and
- D. a liquid metal slip-ring arrangement for the supply of current to or from said winding, said slip-ring arrangement comprising:
- I. a first electrically conductive annular member which is coaxial with said rotor and rotates therewith and which is electrically connected with said winding;
- Ii. a second electrically conductive annular member;
- Iii. support means connected between said second annular member and said member supporting the rotor shaft so as to support said second annular member coaxially with said first annular member and to provide an annular gap between said first and said second annular members, and to hold said second annular member non-rotating while permitting axial movement thereof;
- Iv. coupling means connected at one end to said second annular member and at its other end to the rotor shaft to cause said second annular member to move axially with said first annular member during axial movement of the rotor shaft;
- and
- V. a supply of liquid metal in said annular gap between said first and said second annular members whereby electrical connection between said members is established.
Dependencies are inferred from the claim text.