US1159770A - Coil construction. - Google Patents

Description

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COIL CONSIRUCHON.

APPLICATiON HLED 02c. 25. m4.

Patented Nov. 9, 1915.

3 SHEETS-SHEET I.

Ir vntor': Russel! lTlHyde, 8

His fitiorn eg UNITED STATES PATENT OFFICE.

RUSSELL M. HYDE, OF PITTSFIELD, MASSACHUSETTS, ASSIGNOR TO GENERAL ELECTRIC COMPANY, A CORPORATION OF NEW YORK.

COIL CONSTRUCTION.

Specification of Letters Patent.

Patented Nov. 9, 1915..

Applicationfiled December 26, 1914. Serial No. 879,050.

To allwhom it may concern:

Be it known that I, RUssnLL M. HYDE, a citizen of the United States, residing at littsfield, county of Berkshire, State of Massachusetts, have invented certain new and useful Improvements in Coil Construction, of which the following is a specification.

My invention relates to windings of electrical apparatus, particularly transformers, and has for its object an improvement in the mechanical details of their construction.

The invention is, in some of its features, an improvement on. the construction disclosed in the patent to Mayer, No. 974,167, issued November 1, 1910, in that it provides an improved arrangement of somewhat similar coil spacing blocks.

In the arrangement described in the above mentioned patent, the locking members for the spacing blocks extend across the outer edges of the disk-shaped coils; I propose to locate the locking members within the coils. By this arrangement danger of accidental or unauthorized removal of the spacing blocks from between the coils is prevented, the locking means for the spacing blocks do not interfere with the terminal leads or crosswer connections between coils, and the coils may be centralized by extending the inner ends of the spacing blocks to abut any suitable centralizing member within 'the coils, such as the insulation around the core leg.

My invention further provides means for reducing the, possibility of leakage bet-ween coils or groups of coils, which is of great importance in high voltage apparatus, and also allows the sectionalizing of the locking members.

My invention will best be understood by reference to the accompanying drawings, in Which-'- Figure 1 is a side view of a transformer built in accordance with my invention; Fig. 2 is a sectional view on line 2-2 in Fig. 1; Figs. 3 to 8 inclusive illustrate various forms of locking members adaptable to my invention; Fig. 9 is a side view partly in section of a portion of a well known type of transformer embodying a modified form of my invention; Fig. 10 is a sectional View on line 10-10 of Fig.9; and Fig. 11 is a detail.

Referring to Figs. 1 and 2 which show a core-type transformer: 1 is a core of well known form, the legs 2 of which are sur rounded by the coils 3 which are arranged in pairs with disks or collars of insulation 4: placed between the coils of each pair. Be tween adjacent pairs of coils are placed the spacing blocks 5; these are substantially oblong in shape and may be built up of a plurality of layers of insulating or other suitable material to the thickness desired. The blocks 5 between each two adjacent coils are spaced apart to provide for a free circulation of the cooling fluid between the coils. and are arranged so their inner ends extend beyond the inner edges of the coil. The portions of the blocks 5 which extend beyond the inner edges of the coils are provided with notches or holes which interlock with members 6 of insulation or other material, extending parallel with the core-lcg, adjacent to and across the edges of the coils.

One method of interlocking the blocks 5 and members 6 is illustrated in detail in Fig. 3. It will be seen that this may be accomplished by inserting the block 5 edgcwise through the slot 7 in the i. ember 6 until the notches in the block 5 coincide with the side portions or legs of the member 6 when it can be turned into position to lock with the member 6 as illustrated. The locking mernher 6 and the holes in the spacing blocks may assume any of a variety of forms, and several modifications are illustrated in Figs. 4 to 8. These modifications and the method of attaching the respective spacing blocks to the various forms of interlocking members will be readily understood from an inspection of the drawings.

The inner ends of the spaccblocks are preferably extended to abut a centralizing member, in this case the insulating cylinder 8 surrounding the core-leg as shown in Fig. 2. In this arrangement, the members 6, interlocked with the space-blocks 5, by engaging the inner edges of the coils serve also to center the coils about the core leg.

In Figs.'9 to 11 is shown a somewhat different arrangement of the coils and other parts. The coils are arranged in groups, the groups being separated by the collars 4 which have their inner and outer edges extending beyond the inner and outer edges of the coils for the stray-current leakage paths between the coils of adjacent groups, the adjacent coils in each group being separated by the spacing blocks 5( The locking members 6 in this case are divided into sections which extend across the inner edges of the coils between the collars 4.

As in the form shown in Figs. 1 and 2, a lo'cylinder of insulation 8 surrounds the core legs within the coils; in addition an insulating casing 9 surrounds all the coils assembled on both legs thereof and partitions 10 extend between the walls of the casing 9 be- 1., tween the coils on the two legs of the core. In this arrangement the ends of the spacing blocks 5 abut both the inner insulating cylinder 8 and the outer casing 9 and the partitions 10, thus centralizing them and holding them away from the coils. The inner "edges of the collars 4 may also be provided with projections 11, as in Fig. 11, to abut the insulating cylinder 8 and thus centralize the collars.

While I have shown my invention as applied to a core-type transformer with two legs, it is obvious that it may be applied to other types of transformers, and to other forms of apparatus. It will also be obvious that the coils may be grouped in various other ways than those shown without departing from the spirit of my invention. Therefore, while I have shown my invention as applied in a certain manner to a special type of transformer, I do not limit myto any specific manner of application or orm of construction, but seek in the appended claims to cover all such forms of construction which do not depart from the 0 spirit of my invention.

What Iclaim as new and desire to secure by Letters Patent of the United States, is z- 1. In combination, a plurality of disk coils, spacing blocks between and extending beyond the inner edges of adjacent coils, and locking members for said spacing blocks interlocking with the inner ends of the spacing blocks and extending across the edges of the coils.

2. In combination, a plurality of disk coils, spacing blocks between and extending beyond the inner edges of adjacent coils, said spacing blocks being built up of lamina, and locking members for said spacing blocks interlocking with the inner ends of the spacing blocks and extending across the edges of the coils.

3. In combination, a plurality of disk coils arranged in groups, spacing blocks between and extending beyond the inner edges of adjacent coils of each group, collars of insulating material between the coils of adjacent groups, the inner edges of said collars extending beyond the inner edges of said coils, and locking members for said spacing purpose of increasing the blocks interlocking with the inner ends of the spacing blocks and extending across the edges of the coils between said collars.

4. In combination, a plurality of disk coils arranged in groups, spacing blocks between and extending beyond the inner edges of adjacent coils of each group, collars of insulating material between the coils of adjacent groups, the inner and outer edges of said collars extending beyond the inner and outer edges of said coils, and locking members for said spacing blocks interlocking with .the inner ends of the spacing blocks and extending across the edges of the coils between said collars.

5. In combination, a plurality of disk coils and means for spacing and centralizing the coils, said means comprising a centralizing member within the coils and spacing blocks between and extending beyond the inner edges of the coils and having holes near their inner ends, and rods extending through the holes across and in engagement with the inner edges of adjacent coils, the inner ends of said spacing blocks abutting the centralizing member.

6. The combination in an electrical apparatus, of a core, a plurality of coils surrounding said core, spacers therefor consisting of spacing blocks between and extending be yond the edges of the coils and having holes near their inner ends, and rods extending through said holes across the inner edges of adjacent coils.

7. The combination in an electrical apparatus of a core, a plurality of coils surrounding said core, insulation between the core and coils, spacing blocks between and extending beyond the edges of the coils having holes near their inner ends, and rods extending through the holes across and in engagement with the inner edges of adjacent coils, the inner ends of said blocks abutting the insulation between the core and coils.

8. The combination in an electrical apparatus of a core, a plurality of coils surrounding said core. a cylinder of insulation surrounding said =:ore within the coils, blocks formed of isolating material between adjacent coils and separated by spaces from each other, the ends of the blocks extending beyond the inner edges of the coils and provided with holes, and locking members of insulating material passing through vsaid holes across and in engagement with the inner edges of the coils. the extreme inner ends of the blocks abutting said cylinder to centralize the coils.

9. The combination in an electrical apparatus, of a core, a rounding said core, a cylinder of insulation between the core and coils, an outer insulating casing surrounding the core and coils, spacing blocks between and extending beyond the edges of the coils having holes near plurality of coils SUI! their inner ends, and rode extending through the holes across and in engagement with the inner edges of adjacent coils, the inner ends of said blocks abutting the cylinder of insulation between the core and coils, and the outer ends of said blocks abutting said outer insulating casing.

RUSSELL M. HYDE.

\Vitnesses: V

J. II. Bin'rnux, J12, T. A. RJLODI'IS, Jr.

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