Claims
- 1. A pump construction for liquid sodium including a plurality of circular and discrete coil elements for being placed around a central and cylindrical central duct, a plurality of ring laminate constructions for placement to said central cylindrical duct, said plurality of ring laminate constructions for trapping and firmly engaging therebetween said coil elements, said laminate constructions comprising:
- a plurality of groups of laminates arrayed side-by-side, each laminate for extending in a plane parallel to the axis of said cylindrical duct, said laminates formed from a material for conducting a magnetic field;
- each group of laminates abutted to the central duct to form an arch about a segment of said central duct;
- said plurality of groups of laminates each having at least one laminate parallel to a radius of said central cylindrical duct and being abutted to said central cylindrical duct to form an endless arch adjacent said central cylindrical duct completely surrounding said duct;
- said groups of laminates each defining coil element receiving grooves for receiving and firmly clamping therebetween said coil elements of said pump;
- means for binding said laminates radially to and towards said central duct to maintain said group of laminates as an endless arch whereby said laminate construction can be manipulated as a unitary construction with respect to said central duct; and
- means for compressing said ring laminates construction together along the length of said duct for trapping said coil elements therebetween.
- 2. The invention of claim 1 and wherein:
- each of said radial laminates of said group of laminates is formed of a first material having a thermal index of expansion to expand and compress at said central arch and key to said central duct upon heating; and means for binding said laminates radially to and toward said central duct, said radial binding means providing radial tension to said laminates whereby expansion of said laminates to permit said expanding laminates to rigidly key to said central duct.
- 3. A submersible sodium pump for pumping liquid sodium, said pump comprising in combination:
- a central duct for permitting a cylindrical stator member to be formed thereon;
- a plurality of coil members having discrete spiral wound coil configurations for surrounding said central duct;
- a plurality of ring laminate constructions formed about said central duct, two adjacent ring laminate constructions trapping one of said coil segments therebetween;
- said ring laminate constructions for placement to said central cylindrical duct each including a plurality of groups of laminates arranged side-by-side for extending in a plane parallel to the axis of said cylindrical duct;
- each group of ring laminates constructions abutted in an arch to and towards the central duct of said palm to form an arch about the segment of said central duct;
- said plurality of groups of ring laminate constructions each having at least one laminate parallel to a radius of the axis of said central cylindrical duct and being abutted to said central cylindrical duct to form an endless arch adjacent said central cylindrical duct completely surrounding said duct;
- said plurality of groups of ring laminate constructions further defining top and bottom coil member receiving indentations for receiving and trapping said coil segments on either side of said ring laminate constructions;
- means for binding said laminates radially to and towards a central duct to maintain said group of laminates as an endless arch whereby said ring laminate constructions can be maintained as a unitary construction with respect to said central cylindrical duct;
- means for compressing said ring laminate constructions one towards another whereby said coil elements are firmly held between respective ring laminate constructions; and
- central magnetic conductive iron placed interiorly of said central duct whereby helical magnetic fields are conveyed from the bottom of said duct to and towards the top of said duct.
- 4. The invention of claim 3 and wherein said laminates of each said ring expand upon heating, said laminates in expansion upon heating confined by hoop tension to impress upon said central duct and key rigidly to said central duct to conduct heat from said coil to said central duct.
- 5. The invention of claims 1 or 3 and wherein said coil constructions include;
- at least one elongate bus member said bus member having a flattened major planar surface with two spaced apart side edges defining a constant width strip along the length of said bus, said bus member fabricated from a flat bendable conductive material;
- an insulation layer wrapping said bus member;
- a central bend made within the major plane of said bus member for defining transition between a lower spiral wind and an upper spiral wind to form upper and lower spiral halves of said coil;
- said lower coil spiralled outward from said central bend in a first rotational direction from said central bend to one of the edges of said coil to dispose half the length of said bus in a spiral wind with the flat major surfaces of successive winds confronted one upon another in continuously outwardly spiral layers terminating at one of the ends of said elongate bus;
- said upper coil wound outward in a second rotational direction from said central bend to one of the ends of said coil to dispose the remaining half of the length of said bus in a spiral wind with the flat major surface of successive winds confronted one upon another in continuously spiraling layers terminating at the other end of said elongate bus, the layers spiraling in the same first rotational direction whereby said upper and lower coil sections when conducting current are series connected at said central bend and form complementary magnetic fields;
- means for insulating said upper and lower coil sections to prevent electric arcing between distant portions of said coil; and,
- means for binding said upper and lower coil sections together to form a unitary member for independent handling.
- 6. The invention of claim 5 and including three elongate bus members, each said successive bus member wound one upon the other to form three discrete overlying conductive members on said upper and lower coil halves.
- 7. The coil construction of claim 6 and wherein said three bus members begin and end at equal angular intervals with respect to said coil member.
Government Interests
The U.S. Government has rights in this invention pursuant to Contract No. DE-AC03-85NE37937 awarded by the U.S Department of Energy.
US Referenced Citations (5)
Foreign Referenced Citations (4)
Number |
Date |
Country |
2545293 |
Nov 1984 |
FRX |
247532 |
Mar 1947 |
CHX |
580585 |
Sep 1946 |
GBX |
723570 |
Feb 1955 |
GBX |
Non-Patent Literature Citations (1)
Entry |
Monroe, "Developments in Circular Core Transformers", Electrical Engineer, Apr. 1970, pp. 28-31. |