US 1867032 A
Abstract available in
Claims available in
Description (OCR text may contain errors)
July 12, 1932.
F. S. SMITH CONSTRUCTION 0F TRANSFORMER TANKS AND THE LIKE Filed Aug. 10 1927 mi Q Pafentedduly 12, 1932 rRANKIiIn s. siu'rrmor `nano i: LYrL'NEW YORK-f eoilsfrruerror'orl'rnAusrmalvinas2 'ranksAND.'rnnfr-.rxnV
VApplication. ild August 10, 192i?. SerialNm 211,383.
This invention relates tothe construction of transformer tanks and the like. Y One of the objects thereof is to provide a construction of the above'nature which is dependably fluid-tight throughout and Wherein the possibility of leakage is minimized. by maintaining at al minimum the number of openings employed inl4 the tank walls. 'Another vobject is to provide means for utilizing a. single opening in the Vtanlrfor the insertion of1afluid dielectric or for exhausting the tank contents andV for the mountingof a pressure gage. VAnother object is to provide a simple and practicalmeans for forminga fluid connection with the tankinterior. Anotherobject is to provide a thoroughly fdependable Vseal at the tank openingthrough which Huid is passed to or fromthe tank. Other obj ectsv will be in partobvious or in part pointed out 20 hereinafter.
The invention accordingly consistsin the Y features of. construction, combinations of elements and arrangements of parts as willA be exemplified in the structure to be hereinafter described and thescope of the application of which 4 will be; indicated ini the following claims. 1 v' Y In the accompanying drawing in which is shown one-'of the various', possible embodiments oft-his invention, i
Figure 1 is a sectional view of a portion of a transformer tank orv the, like showing a pressure gage and fluid connection with the tank interior; .f
ASimilar reference' characters refer tosimidrawing. Y
'lar parts throughout the several views -of the Referring now drawingiin@ detail,
Figure 2 showsthe parts shown in Fig-ure there is shown i Figure portion of the wall 10 of a tank which contains ahightten- -sion transformer or other electrical apparatus. In this transformer there is preferably," employed aydielectric consisting "of, a luid,. such as. a suitable gas, under highpressure. Thepressure employed maybe inthe neighborhood of 2254 pounds.` Itis to be under# stood, also, that insteadof containing a-gas` under high pressure, the tankv may `befi'exhausted so that the Apressure therein, abouttheV transformer coils or other electrical .equipment is below atmosphericandv a substantial vacuum prevails. i Whether y the preferred high pressure gaseous dielectric orda vacuum is employed, itis of the greatest 4 importance that there be no leakage through the'tank walls. -The-greater the number `of openings which are employed in thetankthe greater becomes the difficulty of'mfoiding leaksv and Y of properly sealing the tank.`
Referring still to Figure 1, therefis shown A ajmember 1l threaded into anopening 13 in the tank. Mounted upon the outerend ofthe y member 11 is apressure gage 12 o fany suitvable construction, and extendingthrough the member .fromv thel inner end :thereof to the 'Y pressure gage is a fluidpassage 14. Between the pressure gage andthe tank vwall/s the member 11 isprovidedwith a somewhat eri-1 larged and squared por-tion'llaj which may be engaged by a wrench to `thread 4the .meinf ber 11 tightly into the opening 13. 1
In the party llaof thelmember'1lv is formed Y a fluid passage. lrcommunieating` with the.,
passage 14 atits inner end and extending outwardly therefromtoward theside ofthe member 11 atisubstanti'ally right anglesto the passage 14. f The'outer portion 15a ofthe pasenlarged portion `forms a valve seat lrwh-i'ch y is preferably substantially fla-t as shown. :4 In
vthe part'.I 15a is a valve ymemberwhichyconsists of a small threaded p lug .17. havin'gat lits inner end a tapered ysuri'ace 17 ato coact with the valve seat-16'. Thefplugjl? 4is provided at its outer end withatransverse slot 18 to be engaged by a screw driverfor thread- .ing thevalvetowardandawayfrom the valve lsage 15 is enlargedand the inner endoffthisw I.
l When'the valve member 17 is threaded'inwardlyv against the seat 16, the fluid passage is sealed thereby. The threads of the valve member 17 have preferably a somewhat loose fit with the threads of the passage portion the side surface of the plug or valve member "I 17 a shallow longitudinal groove 19Hwhich'insures a freeflow of fluid when the valve member is backed away from its seat..l The plug 17 is of such length, preferably, that it is at all times'contained wholly within 'thejpas- Vsage 15a. i
` In'Figures 1 and 2 there is shown lin posi tion about the member 11 a rigid frame 2O Vwhich is preferably in the shape of a closed loop or Vrectangle'. Mounted inthe left-hand side of this frame,-as viewed in the drawing,
is a lpar.t. 21 which may be termed a nozzle,
Vhavingl afluidv passage 22 extending axially therethrough and having'at its outer or'rear end means for making connection with a fluid conductor suchv asa flexible pipeor hose 23. The front or innery end of the nozzle21 is provided preferably with a tapered surface 24, the end of the'nozzle tapering down toa diameter less than that of the mouthof the 'passage 15a. vThreaded in the side" of ther frame 20 opposite the nozzle 21, and prefer- Ajicablyv axially aline'd with the nozzle, isv a rod 'or spindle 25 having a hand wheel 26 by means of which it may be Vturned and advanced through the frame toward the end of thenozzle 21 or movedjin the opposite vdirection. V
Y`The frame 20 is of suchL size that it is con veniently slipped, intoor out of position' over the pressure'gage 12. ",vhen the tank is being filled *withV a fluid 'under' pressure, or being exhausted, the frame ,V20 and the parts carried thereby are placedas shown in Figures 1 and 2. lThe end of the nozzle 21 is registered with the Vpassagel 15a and thereupon the Y spindle y25 is advanced Vby means of the hand wheel 26againstthe'side of themember 11 opposite to the passage 15a. Preferably, there is :formed in' the lsurface of theY member 11, -V against which the rounded end of thel spindley 25 engages, a rounded recess 11bv which properly' positionsthe end ofthe spindle in line with lthe nozzleV and the' passage 15d. The
' parts having been thus positioned, when the Yspindle 25 is turned tightly up', against the "fos member 11,"the` end of the nozzle 21 is pulled v` member 1-1-i's preferably 'solderedjto the tank `10 about the opening 13, as shown at 3.0"in vFigure 1.
tightly against theportion ofthe member 11 about themouth ofthe passage 15a.
againstthe sharpedge about thefmouthof'the passage 15a and kforms a dependablefluidloss of pr'essureor vacuum. 1-
In Figure 5Y thereis diagrammatically-il 'lustrated the transformertank 10 with the Y The 'member 11 is preferably formedy of brass and "the -nozzlje21 is preferably of'steel;V thetapered surface 24 ofthe nozzle jamsr tightly tight connection between the fluid conductor 23 and the passage'15. The nozzle is prefer ably provided with a shoulderl 27 which bears against the inner side of the frame 2O and takes the thrust exerted by the action of the c" screw 25. The roundedend of the screw or spindleA V25 and `the coactingjrounded. recess in which it operates'permits the'frame .to rock `and adjust itself as the screw isA tightened 1 so that the most effective sealis achieved at the endfofv the nozzle.
lPriortotheadjustment of the nozzle and its clamping device into position as above des,cribed,;the plug orvalve member 17 is'backed awaya slight distance vfrom' its seat 16. The
fluid conductor 23 is now connected to a source of Vfluid underpressure if'it is desired to fill the tank,orto, a vacuumpump if it is desired 'to exhaustithe tank. .As the processY of filling or exhausting proceeds, the pressure" gage 12 continually indicatesv the pressure.V
vwithin the tank; Vhenthe desired pressure has been achieved vthe screw! 25 isloosened the clampingdevice is removed-and the plug 17 is quickly given; a slight turn' toV advance it against its seat 16.` y
It will'be'noted that the plug 17 is of such length that its outer yend `is positioned sonic ydistance from the mouth of the .passage 15a anda space is' left between'the outer end ofi the plug and the end of the nozzle. rPhe fluid passes .through'peitherby working its way through the loosely fitting threads or through the# groove 19 as has been vdescribed in the foregoing. It will be seenl that, after the proclessof-filling or exhausting has been completed, the plug 17 may be very quickly seated Y toseal the passage without any apparatus hereinbefore .described mounted pressure or toexhaust the tank contents. `Afterthe desired lling or exhaustion of thetank has Vbeen accomplished, and V'after the' valve plug 17 'has been seated, the pas` substantial sagel 15a!l exteriorfoflthe end'of the plug ,is
preferably filled with solder, as shown -at 29 Vin `Figure 4I VThe plug 17 Visfpreferably formed of brass so that it forms a dependably tight "seal when seated againstthe `brass seat tionto Vthesoldering over lthe plug V17,theY
Thus, the possibility of V.leakage is dependably minimized "regardlessfof the noi "cumbersome `apparatus -is leftl rmounted 16 ofthe. member 11", and the brass is also4 'i conducive to a ltight soldered joint-.j VInaddi-v 4,867,032 y y i .13 Y
upon the transformer after the process of filling or the process ofiV exhausting 4v.the tank has been accomplished. i
As many possible. embodiments .be
made ofthe above invention .andr` as many changes might be made of the embodimentl above set forth, it is to be understoodthat` all matter hereinbefore, set forth or shownin the accompanying drawing isito be interpreted as illustrative and not ina limiting sense.v
tightly against said iirst member With thev mouths of saidy two. fluid passages in registry, andmeans operatively related to and housed within the passage in said member for sealing Vsaid passage and havinga part. for operating it tofeect a sealing accessible only Vupon removal or'V said device.
2. In a device of the class described, in combination, a member having a passage for Huid therethrough, a conduit for iuid, and
means for forming a fluid-tight connection between lsaid passage and said conduit comprising a second member having a fluid passage t erethrough and a device for removably clamping said members tightly together with the mouthsof said passages in registry, anda valve for sealing said rst passa-ge accessible for manipulation only after detachment and removal of said second member, said-'valve comprising a plug threaded in said first-mentioned passage and having fa seat at its inner end, said plug being of such length thatlit is contained wholly'within said passage when backed away from itsf seat.
3. In a device of the' class described, in combination, a member adapted to be secured in an opening in a tank and havinga fluid passage therethrough terminating at its outer end in a mouth positioned at one side of said member, a supporting bracket adapted to embrace said member, a fluid' nozzle carried in said bracket and adapted to coact with said mouth, and a threaded meinber in said bracket adapted to engage the side of said member opposite said mouth and to draw said nozzle against said mouth to form a duid-tight connection between said nozzle and said passage, said mouth having a sharp edge and the end of said nozzle being tapered to extend thereinto. Y
combination, a member adapted to be secured in an opening in a tank and havinga i fluid passage therethrough terminating at its outer end in a mouth positioned at one portion' thereof` internally threaded, ali-sup.-
porting. bracket` adapted to` embrace said member, fluid nozzle carriedfin said bracket and adapted to coact with said. mouth, a Ithreaded member in said, bracket adapted toi ,engage they side of said;` member opposite said mouth, and to ldraw s.aidnozzle againstA ysaid .mouth to form a fluid-tight connection between said nozzle and said passage,A and a valve member in said'passage comprising a threadedplug in threaded engagementlwith the threaded portion of` said passage "and tool when said' nozzleis removed. and having apart exposed, toward said mouth .and
with whichipart a tool may engage for rotating said plug when saidnozzle is removed. V35 l 5. In a device of the class described, in combination, a member adapted. to besecured in an opening in a tank and having a iiuidpassage therethrough terminating at 1 its outer yendfin 'a mouthpositioned at'rone side of said member, ay supporting bracket 'p adapted to embrace said member, a fluid nozzle carried in said bracket and-,adapted to Y coact with said. mouth', and a threaded member in said bracket adapted to engage the `side 4 of said 'memberoppositesaid mouth and to draw said nozzle against said mouth to form `having a seat'fat its. inner-endl and adapted when backed away from itscseat. tofpermit Vpassage of fiiiid,$said plugbeing accessible -from saidmouth forv rotation'byV means of a.
a fluid-tight VconnectionV between said nozzle and said passage, said mouthhaving a sharp edge and the end of'saidnozzle being tapered v1 to extendy thereinto, and. said member being formed ofi brass and said nozzle being formed of'steel. f i
i 6. A device-for conditioninga tank or theV like as to theilressure therein, comprising@ in combination,1a membersecured into an opening in a tank and having a passagefor fluid therethrough, a pressure gage connected i to said passage,'a removable device forv forming a fluid-tight connection between an outer `fluid conductor and said'passage, said device including ay supporting bracketv shaped topassloversaidpressure gage and havinga iiuid nozzle adapted to .connect withsaid passage and havingalso; a 'threaded member4 adapted to engage theside of= said lirst-mentionedV member and to draw and hold said l nozzle in Huid-tight connection with`l` said ing thepassage? thereini A 7*. Aldevice for conditioning a tank or the like as to the pressure therein comprising, "in combination, a member secured into an l. In a device of the class described, in
A fluid therethrough, a-'pressure gage connectopening-.in a tank and having a ypassage for ed to saidfpassage,aremovable device'for forming afluid-tight connection between an outer fluid conductor and said passage, said 65 side of said member, said passage having a f topass over said pressuregage and having. a
fluid nozzle` adapted to connect-.with said passage and'having means forvdra'wing and holding said nozzlein fluid-tight connection .withsaid passage,vr and valve meansl housed entirely within said passage for openingor v closing theflatter andv operable only when said device and said nozzle are removed from io Y j'comblnation, a tan-k,.a"stem'pro]ect1ng out- .'wardly vfrom said tank and having apassage rsaid'member.l
8." In apparatus-ofthe class-described,
wardly from said tank and having a passage for Vfluid extending therethrough, a' valve in .said passage, a gage permanently connected to said member and communicating with saidpassage in front of said valve to indicate'at` all times the pressure within said tank,
and detachable means for forming a `fluidtight connection between kan outer Huid conductor and said passage. f
9. InV apparatus of the class described, in combination, a tank, a stem projectingiouttherein leading from the interior of saidtank to a porton one side vof said stem, a valve seat insaid passage,a plug threaded kin said passage andforming a valve to coact with said Y =s`eat, a' gage permanently connected to said stem .and communicating withk said passage infront ofsaid valve toindicate at all times the pressure within saidt tank, and means for clamping a fluid conductor tosaid stemin Aregistration withA said uport, said valve being tioning said tank as to pressure thereinr comv 10. In apparatus of the class described, the
operable by .a tool inserted through said port.
combination with a tank of means for condi# prisingv a stem projecting outwardly from l said tank and having aV passage leading from the interior yoi' the tank' to zfport on one side of said stem, a valve in said passageoperable ,throughsaid port to control the flow of luidj.
through said passage, a supporting frame adapted to-embrace said stem, a fluid 'nozzle carried in said frame and adapted toy c oacty with said port, and a member adapted toencombination', 'a member threaded into an opening in a tank and having apassagey communicating withl the'interior of said tank, a
second passage leading from the first-mentioned passageand having aport'on one side able by atool inserted through said port, and
of saidfmember outside said: tank, a valve `seat formed insaid second passage, a threadved plug iny saidsecondpassage forming a valve to coact with said. valve seatand opera removable devieezfor forming a fluid-tight Y' connection lbetween `an outer lfluid conductor YYand ,saidfsecond' passage including a part zhaving a Huid passage therethrough,l and Imeans for clamping said part tightly against said member "with the mouth'of the passage in said'part registering withsaid port, said valve being accessible only when said` device is removed'. Y
' 13. A device forconditioning ay tank or the likecomprising, in combination, a, member -havingits inner. end threaded yinto an openf ingin'a tankand a passage extending from an inner portcommunicating with: the inp terior of said tank to'an outer port on one side of said member outside` said tank, aj valve f seatin said passage, a threaded plugin said passage forming a valve coacting with said seat ,and operable; only by a tool inserted through said outer port, a supporting frame'- adapted to envelopesaidfmember, a iiuid nozzle carried bysaid frame, and a clamping screw invsaid frame adapted Vto engager the `side of said; member opposite said outer port v to draw said nozzle againstsaid outer port to `form a fluid-tight connection between said .nozzle and said passage, said `valve being'accessible only when said frame is removed.
'In-testimony whereof, I have Vsigned my y name to this specification this twenty seventh day of'July'fl927. j Y, c, Y f l?lEtANKLINS.V SMITH.y v,
gage the side of said stem' oppositesaid port to 'draw said nozzle againstisaid port to `form Y a fluid-tight connection between said nozzle and said passage, said-valve being accessible a second passage leading from the lirst-menc' tioned passage and havinga port on one side Y of said member outside said tank,.a;valve seat vrformed' in said vsecond passage, and a threaded plug in said second-passage forming a valve to coact with said valve seat' and operable by a tool inserted through said port. v. 121A device V:for vconditioning a tankfor they like as topressure therein comprising-in A