US2341903A - Transformer - Google Patents

Description

Feb. 15, 1944. c o w 2,341,903

TRANSFORMER Filed Aug. 25, 1940 2* i gl.

Inventor: ax Chclewa,

H15 Attovn ey.

Patented Feb. 15, 1944 TRANSFORMER Max Qholewa, Berlin-Charlottenburg, Germany,

asslgnor to General Electric Company, a corporation of New York Application August 23, 1940, Serial No. 353,964 In Germany September 20, 1939 3 Claims.

The present invention relates to enclosed apparatus and more particularly to transformers of large physical dimensions.

A serious limitation in the design of large capacity transformers exists in the fact that the overall dimensions thereof, particularly the height, must be kept within the clearances of the railway route over which the transformer is to be shipped. Specially designed drop center cars have been provided for transporting such apparatus and while such cars have made possible an appreciable increase in the permissible transformer height, a considerable amount of the total height clearance is still taken up by the platform of the car. This is true because the usual transformer structure necessitates that the car be provided with a transverse platform upon which the bottom of the transformer is rested. In accordance with the transformer design herein disclosed the weight of the unit is not transmitted through the bottom of the tank so that no transverse platform is required on the transporting vehicle.

Therefore it is an object of this invention to provide a new and improved transformer structure which may be so supported upon a vehicle as to permit a maximum utilization of the shipping route clearances.

Further objects and advantages of the present invention will appear from the following description and the claims appended thereto taken in connection with the accompanying drawing in which Fig. 1 is a side view illustrating a car for transporting a transformer constructed in accordance with the invention; Fig. 2 is a crosssectional view of the transformer taken along the line 22 of Fig. 1 and illustrating the relative positions of the supporting girders with respect to the transformer; and Fig. 3 is an enlarged sectional view of the transformer further illustrating certain structural details.

Referring now to the drawing, in Fig. l is shown a railway car If! which, for example, may be of the drop center type and having substantially parallel spaced longitudinal girders H extending between the trucks suspended a relatively short distance above the track at the dropped central portion indicated at 12. Shown supported upon the longitudinal girders ll of the car is a transformer l3 constructed in accordance with my invention as is more clearly illustrated in Figs. 2 and 3.

The transformer includes an enclosing tank [5 within which is arranged the transformer unit comprising a core l6 and windings l'l arranged thereon. The lower yoke 58 of he core is not rested upon the bottom E9 of the tank but is spaced therefrom, the unit being supportedby brackets 20 and 2! extending from the opposite sides of the core yoke l3 considerably above the lower edge thereof. While any suitable bracket structure may be employed, as shown, the supporting brackets each include a pair of longitudinal angle irons 22 and 23, the oppositely extending vertical sides of which are fitted into the channel of the core clamp member 24 and further secured thereto by the transversely extending bolts 25. The outwardly extending horizontal sides or portions of the angle irons are juxtapcsitioned, providing sturdy shoulders by which the transformer may be supported as upon the upper surface of the girder members H. The upper angle iron 22 may be provided with ribs 26 for imparting additional strength thereto.

As indicated in the drawing, the lower corners of the tank on the opposite sides thereof are suitably recessed or stepped inwardly having horizontal portions 2'! suitably secured adjacent the under surface of the brackets and continuing side wall portions 28 connecting with the tank bottom IS. The portions 21 define shoulders through which the weight of the transformer is transmitted from the brackets to the members II. It is evident that the tank proper is unstressed by the weight of the enclosed apparatus except for the small portions thereof in flatwise compression between the brackets and the supporting members.

With the transformer constructed as described, it may be mounted upon the transporting vehicle so that the lower portion thereof depends downwardly between the longitudinal girders I! to a safe minimum clearance above the railway roadbed. Thus the overall height of the transformer is determined by the total height clearances of the route over which the transformer is to be shipped with no deductions being made therefrom to allow for the platform height of the transporting vehicle.

When the transformer is installed, the girder members H will be substituted by rails of a similar or greater height or upon any other suitable foundation structure upon which the transformer may be supported by the side brackets described.

Having described my invention in what I consider to represent a preferred embodiment thereof, I desire to have it understood that the specific arrangement shown is merely illustrative and that the invention may be carried out by other means.

What I claim as new and desire to secure by Letters Patent of the United States, is:

1. A transformer having an enclosing housing, brackets secured to and having portions extending horizontally outwardly from a pair of opposite sides of said transformer, said housing enclosing said brackets and being recessed therebeneath providing shoulders adjacent the un-- der surface of said portions whereby said transformer may be mounted through said brackets upon spaced supporting members, said brackets being secured to said transformer in such man-- ner that the lower portion of said transformer including said housing depends between said supporting members.

2. An apparatus having an enclosing housing, brackets secured to and having portions extending outwardly from a pair of opposite sides of said apparatus, said housing enclosing said brackets and having recessed portions extending therebeneathi providing shoulders engaged on the upper side by said portions of said brackets whereby said apparatus may be mounted upon spaced supporting members positioned beneath said brackets, said brackets being secured to said apparatus in such a manner that the lower portion of said apparatus including said housing depends between said supporting members, said housing supporting substantially no weight of said enclosed apparatus except by fiatwise compression of said recessed portions between said brackets and said members.

3. A transformer comprising an enclosing housing, a core structure for said transformer, brackets secured to and having portions extending outwardly from the opposite sides of said core structure above the lower edge thereof, said housing being stepped inwardly along the opposite lower edges beneath said brackets and adjacent said portions whereby said transformer may be mounted upon supporting members ex tending above the lower end of said transformer.

MAX CHOLEWA.

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