US1673569A

US1673569A - Transformer oil tank

Info

Publication number: US1673569A
Application number: US592643A
Authority: US
Inventors: Kubler Johann
Original assignee: BBC Brown Boveri France SA
Current assignee: BBC Brown Boveri AG Germany; BBC Brown Boveri France SA
Priority date: 1921-10-15
Filing date: 1922-10-05
Publication date: 1928-06-12
Anticipated expiration: 1945-06-12

Description

June 12, 1928.

.L KUBLER TRANSFORMER OIL TANK Filed Oct. 5. 1922 Patented June 12,1928.

JOHANN KUBLER, OF BADEN, SWITZERLAND. ASSIGNOR TO AKTIENGESELLSCHAFT BROWN, BOVER AND CE.,

OF BADEN, SWITZERLAND. y

TRANSFORMER OIL TANK'.

Application filed October `5, 1922, Serial N0.,592,Gl3, and in Switzerland October 15, 1921.y

Those constructions have various drawi backs, of which may be mentioned, the hin- 'F edges and connected together'in pairs in an oil-tight manner, and the several pockets being connected in communication with one another and the tank by means of flanges or bushings affixed to the pla-tes about the communicating apertures in an oil-tight manner.

An embodiment of this invention is illustrated in the accompanying drawings in which:

Figure l is a diagrammatic verticaly section of a transformer oil-box according to tained from the illustrative example shown y in the drawing. In this, the reference character a designates the transformer olil box or tank, the same having flanges o formed thereon by pressing, welding or riveting, at the desired locations andaifording apertures for the passage of oil. The cooling pockets c are each composed of two sheet metal plates welded together at the edges d, whereby the parallel-portions of the plates are spaced apart to afford thin oil circulating chambers of .Y substantial .areal These plates are provided withconnecting fianges or bushings e which `afford oil passages through the plates and reinforce the plates about such passages. The dimensions of these pocket members preferably `are such j that they cover substantially the area of the respective sides `of the `transformer tank to which they are to be connected, and the location of the flanges or bushings fe is pref-v erably suchthat theoil "passages therethrough align withthe oil passages through the passages. of the tank walls. The pocket members as thus constructed are mounted on the tank by oil tight connections which perform the double function ofsupporting the pockets on the tank and afford- 'ing communicating flow.. connections be-y tween the interior of the tank and the respective pocket members.l The form of con-y nections may be of any sort appropriate to accomplish these results.` i. a i

As shown in Figs. 3 and 4, the flanges e are connected together in anoil-tight manner by means of right and left hand screwf threaded radiator nipples fwith the inten` position'of packing or gaskets betweenthe flanges of juxtaposed pocket members.

As shown in Figs. 5 and6, a short piece of tube g is screwed, soldered or welded in each pair of oppositely situated flanges of sert-ed through the tube orifices of the several pockets, and by their means the flanges are pressed together in an oil-tight manner.

As shown in Figs. 7 and 8, the flanges e of each cooling pocket o are made in one piece, and are formed with radial apertures i for the passage of the oil into the cooling pockets. The several cooling pockets are pressed together in an oil-tight manner lone and. the Isame pocket, and bolts it are in-` y against the flange of the tank a by means of through bolts 71, with the interposition of packing rings.

rl`he outer closure of the oil passage aperture may be formed or constituted by a pocket which is provided with flanges e on one side only. A pocket of this kind would however be a separate construction and be capable neither of beingchanged nor removed nor extended. For this reason it is preferred to construct all the pockets alike, and to close the outer aperture by means of a screw-onlid m or a bolted lid n as shown in the drawings.

In this fashion, as many as desired ol the pocket members may be assembled in collateral relationship, extending parallel to the sides of the tanks, so that the entire assembly conforms in general to the contour and wall dimensions of the tank. The fianges or bosses e constitute spacing members between juxtaposed pocket members, so that an intervening air circulation space is aforded, the width of which space may be governed by the thickness of the gaskets inserted between the flanges of the juxtaposed pocket members. These air circulating spaces are open' to the surrounding atmosphere at the top, bottom and ends of the pocket members, so that free circulation of cooling air over the entire wall areas of the pocket members is permitted. By virtue of the communicating passages afforded through the connecting flanges, an automatic circulation of oil is accommodated, from the ytop of the transformer tank into the upper portions of the pocket members, down through the pocket members as the oil cools, and back into the tank at the bottom. By virtue of the location of the connections adjacent the corners of the pocket members, they are afforded` very stable support on the tank, in spite'of their vextensive area, and, consequently, they may be formed of quite thin plates which expedite the conduction of heat from the contained oil to the external air.

It will beobserved, therefore, that the invention permits of a very material simplication in they construction of air cooled transformer containers, as any desired amount of cooling surface may be provided by use of pocket members of a standardized construction. Thus a transformer tank of standardized size and construction may be equipped to meet the requirements of any of different climatic conditions, a larger number of cooling pockets being employed if the apparatus is to he installed in a hot climate, and a smaller number if 'for a cooler climate.

lVhat I claim is:-

1. Apparatus of the class described comprising, in combination with an oil tank, a plurality of similar pocket members coliforming approximately in area and contour with a Wall of the tank, said pocket members being,r disposed in collateral relationship with one another and with said wall of the tank and being spaced trom one another and from the tank wall to afford intervening,lr air circulation spaces, means connecting said pocket members to one another and to the tank at distributed points adjacent their top and bottom margins, said tank and pocket Incinbers beingr provided with comnnmicating,r passages in their upper and lower parts, and said intervening air spaces having comunication with surrounding atmosphere at the margins of the pocket members.

2. In apparatus of the character dcscribed, a receptacle havingr fluid inlet and outlet openings, and a cooling unit disposed in proximity to a wall of said receptacle and providinpr with thc latter by Way of said openings a closed circulatinpr circuit ior fluid; said unit comprising,y a plurality of superimposed spaced radiating elements each comprising a pair of complementary plates fitted and secured together at their marginal portions and formed to provide a chamber forming part of such circuit, the plates bcingr provided with flanged openings registering with each other and with one oi said receptacle openings, and means extending through the flanges at the plate openings and into fastening: relation with said receptacle wall at said receptacle opening and operatink;r to hold said unit in assembled relation with respect to said receptacle and to hold said elements comprising said unit in assembled relation with respect to themselves.

In testimony whereof I have signed my name to this specification.

JOHANN KUBLER