US1605026A - Transformer - Google Patents

Description

Nov. 2 1926. 1,605,026

L. H. HILL El AL TRANSFORMER Filed Sept. 10. 1 2 Sheets-Sheet 1 WITNESSES:

INVENTORS Leland/ MW AF /3 BY Wa/ferfll Dan/1.

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Nov. 2 1926. 1,605,026 I L. H. HILL Fr AL @l' 1 23 r B 27 'l 26 2f M 5 F I .4. F7 .5

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WITNESSES: INVENTORS gakihwq Patented Nov. 2, 192a.

-LELAND H. HILL, EWIBGVALI, L1H) WALTEB mam, 0]

PERI-- mvam ABSIGH'OBS T0 WESTINGHOUSE ELEGIEBIG G: MAM! GOI- FLH'Y, A. GOBPORLTIOH OI PENNSYLVANIA.

Application fled September 10, 198. Serial 10. 186,888.

Ourinvention relates to incased apparatus, such as oil-immersed transformers, and particularly'to apparatus of this character, that is provided with external I radiators for aiding in the dissipation of the heat (generated in the transformer.

It is desirable to have the external radiators of large transformers or similar apparatus detachable in order that they may be removed during transit on accountof the size Y of the transformer tank. The transformer windings are carefully dried and the tank filled with hydrated oil when the transformer is tested in the factory prior to ship'- ment. In order to avoid a repetition of these operations when the transformer is placed in service, it is desirable to ship the tank filled with oil. Prior to our invention it was necwsary to remove the oil after the transformer was tested, re1nove the radiators and provide special closures for the radiator openings, refill the tank with oil and then remove the oil again at the place of installatio in order to attach the radiators.

25 it has been proposed to use valves between the tank and the radiator but this ement has not been considered practicable be- A cause the ordinary valves obstructed the flow of oil and the length of the valve greatly increased the acing between the radiator and the tank. The disadvantages of this construction were the decreased rating efliciency and the increased size of the transformer, and these defects were so serious as to preclude the use of any type of valve heretofore. The increased sizeof the trans f 7 limi ed the maximum capacityof apparatus that could be shipped assembled.

Furthermore the increased spacing of the radiators weakened the construction, as the raglirators are ordinarily supported on the In accordance with ourinvention, a telescoping valve is provided which does not obstruct the flow of oil through the radiator,

and does not appreciably increase the spacing between the radiator and the tank. In this manner, the disadvantages attendant upon the use of an ordinary valve are over-' M come. In a transformer equi pad with these valves between the tank an the radiator, the'removal and replacement of a defective radiator may be accomplished without disconnecting the transformer from service, if one of the radiators becomes damaged.

For a more complete understanding of the nature of our. invention, reference should be had to the accompanying drawings in which Flgure 1 is a view in vertical section of an incased transformer invention;

Fig. 2 is an end view of the valve shown in connection with the transformer of Fig.1;

Fig. 3 is a vertical sectional view througi the valve shown in Fig. 2;

Fig. 4 is a plan view, partially in section and partially 1n elevation,'of thevalvc shown in'Figs. 2 and 3; and I Fig. 5 is a vertical sectional viewof a mfication. F d

to ig. 1, 10 enotes a casing enclosing an oil-immersed transformer 11 and provided with detachable radiators 12, onl one being shown. Valves 13 of a. s cia construction are interposed between 2 e :gsipgg of the transformer 10 and the rad1a-' It will be understood that the purpose of the radiator 12 is to increase the heat-dissipating and radiating capacity of the tank and thereby increase the load rat' of the transformer. The telescoping v ves 13 have a valve disc and seat projecting into the transformer tank and ofl'er substantiall no obstruction to the flow of oil throng 85 the radiators. If it is no to detach the radiators 12 during transit or in case the radiator is damaged, the valves are covered with a cover plate 14 to prevent loss of oil in case the-valve istampered with.

As shown in Figs. 2, 3 and 4, the valve 13 comprisesa fian 'e or base member 15 in which the operating rod '16 of the valve is supported. An integral tubular portion 17 of the valve projects through the connecting portion '18 of the transformer tank into the tank'itself. The valve 13 is secured to the transformer flange 19 by threaded studs 20 having a shoulder 21 engagin the base 15 of the valve. The opening in e tubular portion 17 of the valve is closed b means of a valve disc 22 sup rted upon a orizon tal valve stem 23. line valve stem 23 is mounted in a fin or crossbar 24 (see Fig. 4)

embodying our an appreciable extent.

tween these e and is tprovided with a collar 25 oo-operating wi a compression spring 26 encircling the valve stem. ,The spring 26, being normally under compression, tends to close the valve. disc 22 upon the vahleiseat formed bytheend of the tubular member 17. A layer of cork or .other suitable packing material 27 is carried by the valve disc '22 to cooperate with the valve seat in order to make the valve oil tight. An eccentric cam 28 is mounted on the valve rod 16 and isadapted to reciprocate the .valve stem and disc as the valve rod 16 is turned, thereby opening and closins the valve. The valve rod 16 1s rovided. withan operating member or han e 35 for mani ulating the same. The cam 28, is provided with a notch 29 co-operating with the rounded head of the collar 25 to latch the valve rod and disc in the open position.

As shown in 4,;the radiator 12 is securedtothetank yanut30uponthestud 20, the radiator havin a flange 31 co-opcrating with said stu This construction permits removal of the radiator while mainthe valve in osition on the flan of the tank since the oulder21 of the stud 20 holds the valve in place. Since the same stud secures boththe valve and the radiator to the tank the construction is simple and compact. The connections between the flangeof the tank, the valve and theradiator are made oiltight by the use of gaskets 32.

. The area of the opening through the valve 18 is substantially the same as thearea of the opening in e radiator flange 18- and tests have indicated that the heat radiating ca aci of the apparatus is not redu wliim evalve is used. Therefore, the flow of oil to the radiators is not obstructed to Furthermore, the spacing of the radiator item the tank is only in by an amount equal to the thickness of the flange or base 15, which is only a small part of the normal spacing ements. Therefore, the use of the valvedoes not weaken the construction as would be the'case if the heavy radiator were aced at a relatively large distance from a tank. Such a'construction would require ertra heavy flangesjon the transformer tank or additional braces and these are avoided by the use of our invention. In Fig, Ii is shown a modification of our inventionin which the flange 19 of the transformer tank is drilled to receive the valve rod 16-andthe inner surface of the flange is finished at the point Blito provide a seat for the valve disc 22. The bly of the valve shown in Fig. 5 is exactly the same as that shown" in the preceding I I except for the changes noted. The t a r issecumddirectl'ytotheflan 19'inthe usual manner. By means of construction, structure of the valve is further -'sun abile we have described the best'means known to us for carrying out the invention, it should be understood that such descrip-- tion is to be 'interpretcdin an illustrative rather than in'a' limiting sense and that we do, not wish to be restricted thereby tb the exactdetails shown except as may be defined in the appended claims.

- We claim as our invention:

1. The combination of a transformer tank, a radiator, said tank having a tubular pro portion to which said radiator- 18 secu and a valve-telescoping with the transformer, the valve comprising operating elements I nrn vill said PlQjOOtifi o rtion and a disc connected thereto in r insideofsaidtank. f 2. The combination of a transform tank, a radiator,*a horizontal connection be 7 tween-said tank and said radiator, a valve disc provided with a horizontal a sa'id oonnectiomand means includmg a cam coopera' with'said stem for operating said valv ia disc.

3. The combination with a transformer stem fortank, a radiator and a valve between said tank and radiator, of securing studs-in said tank having a shoulder'engaging said valve and means on said stud for the radiator to the tank. 4. The combination of a. transformertank, a radiator, said tank ha atubular proj portion to which an radiatorssecure avalveatructurecomp" a tubular portion mscrtable into thevtfaliifiar portion oi the a disc io'rcl Inner amid the, tubular portion 0 the valve,ope n means forthedisc, anda co opera i; with the outerends' of the tubular portiom of the tank and valve for forming a fluid-tight -'0int.

5. The combination 0 'a transformer tank, a radiator, said tank having a tubular proiecting rtion to which said radiator is secured, a ve structure comprisinga tubular portion insertable into the tubular portion of the tank, a disc biased to its closed position for closing'the inner end of the tubular portion of the'valve, operating means for the disc,.and a flange co-operating with the outer ends of the tubular portions of the tank and valve for forming a fluid-tight-joint.

6. The combination of a transformer tank, a radiator, said tank havin atubular g p i c ing portion to which said radiator is se a structure comprising a r tubular In on insertable into the tubular portion of the tank, a at its outer end,a disc'biased to its closed position'for closing the inner end of the tubular'por- -tion of the valve, and operatingmeans for the disc, said flange co-operating with the p tubular portion of the tank and the radiator of the valve, and operating means for the for forming a fluid-tight joint. disc, said flange fitting between the tubular 7. The combination of a transformer portion of the tank and the radiator for tank, a radiator, said tank having a tubular forming a fluid-tight joint.

5 projecting portion to which said radiator is In testimony whereof, we have hereunto secured, a valve structure comprising a subscribed our names this 4th day of Septubular portion insertable into the tubular tember, 1924. portion of the tank, a flange at its outer i end, a disc biased to its closed position for -LELAND H. HILL.

10 closing the inner end of the tubular portion WALTER M. DANN.

10 closing the inner end of the tubular portion of the valve, and o crating means for the disc, said flange fitting between the tubular portion of the tank and the radiator for forming a fluid-tight joint.

In testimony whereof, We have hereunto subscribed our names this 4th day of September, 1924.

LELAND H. HILL. WALTER M. DANN.

Certificate of Correction.

It is hereby certified that in Letters Patent No. 1,605,026, granted November 2. 1926, upon the application of Leland H. Hill, of Swissvale, and \Valtr-ar M. Dann, of ilkinsburg, Pennsylvania, for an improvement in Transformers, errors appear in the printed specification requiring correction as follows: Page 1, line 13. for the word hydrated read dehydrated, and line 32, for the Word rating, read radiating; page 2, line 81, claim 1, after the Word transformer insert the word tank; and that the said, Letters Patent should be read with these corrections therein that the same may conform to the record of the case in the Patent ()fiice.

Signed and sealed this 7th day of December, A. D. 1926.

[sun] M. J. MOORE, Acting Commissioner of Patents.

Certificate of Correction.

It is hereb certified that in Letters Pabent No. 1,605,026, granted November 2. 1926, u on tie up lication of Leland H. Hill, of Swissvale, and Walter M. Dam, of Wil insburg, ennsylvania, for an improvement in Transformers, errors appear in the rinted specification requiring correction as follows: Page 1, line 13. for the word ydrated read dehydrated and line 32, for the word rating, road mdzbting" age 2, line 81, claim 1, after the word transformer insert the word tank; and-t at the sai Letters Patent should he read with these corrections therein that the same ma con cm to the record of the case in the Patent ()flice.

Signed and se ed this 7th day of December, A. D. 1926.

[SEAL] V M. J. MOORE,

Acting Gammksa'oner of Patents.

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