US2300536A - Electrical induction apparatus - Google Patents

Description

NOV. 3, 1942. w R 2,3002536 r ELECTRICAL INDUCTION APPARATUS Filed July 12, 1940 2 Sheets-Sheet 1 /8 m m f t /4 I4 I! w /e wnuesszs: INVENTOR k 7- I Wi/h'amL. Curry.

\ I W. 6 M 771W ,6) ATTORNEY Nov. 3, 1942'. w, L, URRY- 2,300,536

ELECTRICAL INDUCTION APPARATUS ATTORNEY Patented Nov. 55, 1942 ELECTRICAL INDUCTION APPARATUS William L. Curry, Sharpsville, Pa., assignor to Westinghouse Electric & Manufacturing Com pany, East Pittsburgh, Pa., a corporation of Pennsylvania Application July 12, 1940, Serial No. 345,043

3 Claims.

- My invention relates to electrical induction apparatus, and more particularly to means for Cantering the apparatus in the tank and retaining it therein against vibration.

It is an object of the invention to provide means for centering electrical induction apparatus such as transformers in the enclosing casings or tanks in which they operate, and in retaining the apparatus therein, that is simple in construction, inexpensive to manufacture and efficient in use.

More specifically, it is an object of the invention to provide channel members within the transformer tank and attached to the walls thereof having flange portions extending inwardly from the wall and cooperating with guiding surfaces on the apparatus for guiding and positioning the apparatus while it is being lowered into the tank, and providing projections at the upper end of the channel members that are bendable and positioned at such elevation as to engage cooperating members provided on the apparatus, so as to tightly retain the apparatus against movement.

Other objects and advantages of the invention will be apparent from the following description of a preferred embodiment of the invention, reference being had to the accompanying drawings, in which:

Figure 1 is a plan view of a transformer positioned within a casing provided with the guiding and retaining means of the invention, showing the casing wall in section;

Fig. 2 is a perspective view of a guiding and retaining member;

Fig. 3 is a vertical sectional view taken along the line III--III of Fig. 1; and

Fig. 4 is a detail view of a modified structure.

The apparatus to be retained within the casing may be a transformer having a core and end frame comprising four members attached to the edges of the stack of laminated sheet steel com.- prising the core of the magnetic circuit as described and claimed in the copending application of A. D. Forbes for Electrical apparatus, Serial No. 345,081, filed July 12, 1940, and assigned to the same assignee as this application.

Referring to the drawings, a circular tank I is illustrated containing a transformer or like apparatus having a core 2 of magnetic material provided with a pair of windows 3 for accommodating windings 4, 5 and B that are positioned about the winding leg of the core structure between the windows. An end frame structure is shown about the edges of the stack of laminations comprising the core structure 2 and consisting of a bottom member I, two vertical side members 8 and 9 on opposite edges of the stack of laminated steel sheets and a top member II, the four members 1, 8, 9 and II being connected together to form an end frame about the core.

The side end frame members 8 and 9 are shown in Fig. 1 and are provided with channel-shaped portions I2 that xtend vertically between the flat portions I3 that are positioned snugly against the edges of the core structure, thus providing a vertical rib or corrugation on opposite sides of the core structure adjacent the tank wall. Guide channel-shaped members I4 are positioned within the transformer tank wall and welded thereto as shown at I5 in Fig. 1, the side flanges I 5 of the channel extending inwardly from the tank on opposite sides of the channelshaped portions I2 of the end frame side members B and 9 so that the members cooperate to center the transformer structure within the tank while it is being lowered into place.

The channel guide members I4 are so positioned within the tank that the top edge I8 thereof is substantially at the elevation of the upper edge IQ of the channel-shaped portion I2 of the side frame members 8 and 9 when the transformer is in its final position in the tank. As best shown in Fig. 2, a projection 2I is provided at the upper end of the channel guide members I4 which extends upwardly, in the manner shown in that figure, until after the transformer has been positioned within the tank, after which the projection or car 2| is bent over at substantially right angles from its initial position so that it extends substantially horizontally inwardly from the outer wall of the tank as shown in Figs. 1 and 3, and thus snugly engages the upper end I9 of the end frame channel-shaped portion I2. This projection may, if desired, be of sufiicient length to give the end portion thereof a second right angle bend so that it extends downwardly a short distance on the inner side of the frame in Fig. 4. It will be appreciated that after the transformer core and coil structure has been lowered into position with the side walls I6 of the channel members I4 cooperating with the vertical rib portions I2 of the end frames to guide the transformer centrally of the tank, these side walls It plus the bent over ears 2I at the upper ends of the members I4 retain the structure tightly within the tank against appreciable vibration or movement.

It will be apparent to those skilled in the art members 8 and 9, as shown that modifications of the structure shown and described may be within the spirit of my invention and I do not wish to be limited otherwise than by the scope of the appended claims.

I claim as my invention:

1. In combination, a casing for containing electrical apparatus including a core structure and an end frame therefor, guide means comprising channel members fastened within the casing having flanges extending inwardly from the casing wall, said apparatus having cooperating surfaces for engaging said channel members to guide said apparatus centrally of the easing while being lowered to its final position within the casing, said channel members having upwardly extending ears thereon bendable at right angles from the wall and positioned at such elevations with respect to the apparatus that when bent inwardly after the apparatus is in place within the casing the apparatus is held tightly thereby.

2. In combination, a casing for containing elec trical apparatus including a core structure and an end .frame therefor, said end frame having outwardly pressed channel sections providing ribs on opposite sides thereof, guide means comprising channel members fastened within the casing and having flanges extending inwardly from the casing wall for engaging the ribs on the end frame to guide and center said apparatus within the casing while being lowered to its final position within the casing, said channel members having upwardly extending ears thereon bendable inwardly at substantial angles from the wall and positioned at such elevations with respect to the apparatus that when bent inwardly after the apparatus is in place within the casing the apparatus is held tightly thereby.

3. In combination, a casing for containing electrical apparatus including a core structure and an end frame therefor, said end frame having chanel portions providing ribs extending vertically on opposite sides thereof, guide means within the casing for engaging the ribs on the end frame to guide and center said apparatus centrally of the casing while it is being lowered to its final position within the casing, said channel members having upwardly extending ears thereon bendable inwardly from the wall and positioned at such elevations with respect to the apparatus that when bent inwardly after the apparatus is in place within the casing, they engage cooperating members provided on the apparatus, whereby the apparatus is held tightly thereby.

WILLIAM L. CURRY.

Images