US1445691A - Means for controlling elastic fluids - Google Patents

Description

Patented Feb. Ehi, i923,

italiaanse Constantina `routines, JN., or LONDON,` ENGLAND.

,p non conraonmna .nazismo rLUrns.

#elongation medecine- 31, 1ere. sensi up. 334,570.

`Beit `kneufn that I, rlljinxnnnnn Generals Tina lemons, unior, a subject ojlthc lingj of Great Ireland, and residingr at Porchester Terrace, London, VV. 2,

VIlngi'laiul, have inyentedycertain new` and use-` iul improvements lli/,leans fou Controlling `Elastic ,l `lljiids, ol which the l'ollowingis a Spenicatiani ,'llns niventlon relates to rneans tor 1na1ntaining a constant ionslup `between `the `pressures of ,tufo elas icflluids'by the `nipotelnent `oit apartition,` floating' bell, or the eqi,` went subjected upon opposite sidesto the pressures el tht` ysaitlilufuls and by its movement operatillg' lvalues which coi'itiol their passa-ee Y lnfllnited States a1iplication, Serial No. 12%?,889 and th 'further application Serial Nif). 334,877 o divided ther 1n a pressure balanelli,fr` ldevice d er bell 'Heating in Mqudw l iorlns a partii tion betyyeentyyo chanibers,`and is subjected to` the pressure of air Menthe like "in one @hunter @11d a Combustible aas 11 the ether, said air and gas enteringsaid chainfbers each through a double beat or bziijlanced yalye, actliated by the inoueinents ot saidbell to maintain a constant determined lelfitieeshr betufeen the presSllleS ,of two elastic fluids which pass at the controlled pressures troni said device to gaseous :fuel combustion el@ ,liasses e e i `.arias operates ,drop 111 the 4iNLeSSelf-l of one ofthe supplied to the device results inthe Valye` controlling that fluid being ope-ned to a `greater`,extent, while the 'valvecontrolling the otherfluid which `re t@ nsogits pressureis coriespondingly closed. Under these conditionsqtlie immediate re,u

` sulla of the complete failure of one supply,

` for exainple, the `air; is Vthat the ,dus is promptly Slut effiaed would relefl so, pnouidedthe neces/ary pressurelwas maintained `upon tbe surface ,0iv the bell, that is,

y in the space ybeyondthe` regulating" t Value wramunicatjua luilffflie meilf'laclilat the combustionappllances. `lllaintenanceof pressure theniain is howeyer unlillelyunless the failure were enticed and eamedatetais talren to prevent the further escape oit fluid fheretiqm Thus-itl the Levee@ 0f the @if Steely' tailiaaesl meintest maravilla 0f theses restiamo' Naive and :Contea-lent leak-ase aises 'ist ly teileufltt d, in fwhich a" it is the objectofthe present invention to overcome.

The invention consists in a fluid pressure balancingdevice having a movable partition subjected upon opposite sides tothe pressures of'two elastic fluids "aftertheir passager through valveineans actuated by the Inovenent i of said partition," whereby their pressures are "controlled so that they asslun'e' a constantrelationship at the outlets of said deyice, in4 4Whichupon failure ofthe ,supply of one fluid a communication islopened to' allow the uncontrolled supply pres ure of the other Ytiuid l,to act upon the partition and coinpletely`Stop`u the passage ot said otherfluid throughthe deviceV until a supplyoll the first fluid is restored.

Tigre invention'fuitheiconsists infan elastic tluidqiressure balancing" device accordceding paragraph in which an""aperture"ead` inittihg gaslrom the outlet'of the regulating valve to the vsurface oiE the bell'is adaptedto be closed'by ayalve which is seated at or e is'seated; While the additional!unbalanced .force exerted upon the bell due to failure ci the air pressure opens a valve leading from about the time that the gas regulating Valve `the gas inlet passage to the surface "of the bell.' t

`The invention further consists in a device as indicatedhaving a xcoinluitleading from the space adjoining the underside Aofthe bell to a chamber the entry to uihicliiis controlled by jthegas regulatingivalye, and froinwhich the outlet passage opens, said conduit being provided with `faishut-'off valve which "is seated contemporaneously*Witlithe regl-11mm ingyalye,while a hollow 1spindle connecting` said shutoff Yand regulating yalve is' provided with a signing-loaded valve `which opening underthe additional force admits thefgas at full supply pressure from the inlet passage to the underfsurface bell.

I as a casting,l and control The invention also consists in the improvements in or relating to means for controlling gaseous fluids as hereinafter described. l

Referring now to the accompanying drawings:

Figure l is a sectional elevation of an improved fluid pressure balancing device in accordance with this invention, and

Figure 2 is an enlarged detail of the gas and communication valves.

Figure 3 is a diagram oi' the levers and connections. f In carrying the invention into etl'ect in one convenient iorm, as shown by way oii example in the drawings, two double beat valves L and Z9 having between them a. pressure'bell c ioating ina liquid seal (Z are positioned within an upright casing Jformed oit .the various members e-c5- rl'he double beat valve which in the em bodiment illustrated is intended 'lior regulating the air, is of considerably larger dimensions than the gas valve e, which is suitable for comparatively rich gas. The valve l) is positioned in a cylindrical casing c formed apertures y f? f2, in the air inlet passage f.

-Upon the side of the casing c opposite to the inlet f is an outlet branch g leading from the'surrounding space to the main feeding ythe combustion appliances. The casing c is vprovided at the upper end with a remov able cover c for giving access to the Valve l),

and at its lower end is jointed by means of the section' e2 to the tank c3 containing the floating bell hereinafter described.

The bell c forming a moving partition between the air and gas and actuating the valves by tension members and delicately balanced levers as shown diagrammatically y inFigureB and more fully described in the above mentioned applications., operates in an annular tank ye3 preferably formed ot stamped material and having an out-turned flange round the upper edge of the outer shell by means oi2 which thev section c2 is attached thereto. A. domed top 71 corresponding` in shape with the top of the floating` bell c extendsfrom the inner shell ot the annular tank e3, said domed top forming a support for the top of the bell when the latter is in its lowest position, The annular tank contains the liquid seal (l andA is seated within a channel-shaped ringe4k supported upon a series ot legs e preferably provided with height adjusting screws z' at their lower ends orsetting the structure truly upright.

A tube j depends from the centre of the dome 71, to about the level of the bottom of the tank e3, said tube being connected to the top cover e7 of a cylindrical casing e0 containing the double beat gas regulating valve a. The casing e6 has a gas inlet passage 7J with apertures k1, k2, controlled by the valve a. and a gas outlet branch Z; being generally oit a construction similar to that ot the air valve casing. Itis connected by suitable bracing members c9 with. the legs c upon which the tank rests. The tube j which forms a communicating passage leading from the underside oi the bell c to the gas regulating valve casing e is fitted at thc lower end with a shut-oil;l valve m.. adapted to close the end ot' the tube. and thus prevent communication between the under suri'ace of the bell and the gas main leading trom the outlet branch Z to the combustion appliances. The valve m is connected. to the upper ineinber al of the double beat gas regulating valve a by a hollow spindle u, openinglo the 2gas inlet passage 1 by apertures u. in the underside ot the hollow upper valve member al so that a communication is vformed between the ungoverned gas supply in the inlet passage and the underside ot the bell e.

The hollow spindle a communicates through the chamber m1 and ports in? in the screw plug m3 with the interior ot the tube j and it is provided with a spring loaded valve 0 held to its seat by a coiled spring l) positioned within the chamber m1.

The valve o is attached to the bottoni ot the tension member y forming the operating connection between the bell and the gas regulating valve a. Under all normal conditions of working the load exerted upon the valve 0 by the spiral spring y? is sullicent to hold the valve tightly upon its seat so that the passage through the hollow spindle 1t into the tube j remains closed, but under exceptional circumstances as hereinafter described the spring p is compressed and the valve is opened and admits the full uncontrolled supply pressure ot the gas to the underside ot the bell c.

In the event of the air supply 'failing from any cause say for example due to slippingr off or breaking of a driving belt or any other accident of a like nature, the unbalanced pressure of the gas acting upon the underside ot the bell will operate to coinpletely close the gas regulating valve fr. and :it the saine time the shut-oli valve m., which controls the open bottom ot the tube j `will be closedQ The additional force due to the gas pressure being entirely unbalanced by any air will cause the spring 7J loading the valve 0 to be compressed so that thecontrolled pressure of the gas already below the. bell will then be reinforced by the full pressure of the gas supply passing through the hollow spindle n. The bell will therefore Fall lll)

lll() llO hold the double beat valve a and the shut ifiliaeai y i supply of gas to pass through untilthe `failure of the air supply has been discovered,

paratus the gas valves a inayclose and the `communication valve o be openedprior to the closing of the shutsoff valve m. Under siA and closes the passage y'. i i

`By the provision of the shut-off valve and `liv-pass provided the hollow spindle the `these conditions the member u` will. be ei:-

tended above the, communication valve 0 in hollow forni, so as, to forman abutiijlent foi" the upper end of the spring p, or in other words, perform the function of the plug m2; 'llhe shut-off valvefniwill be made a sliding' fit upon the outside ofthe member a, and supported so that it isclear of'its seat when the valve a is closed. The communication valve 0 or its spindle z] will be adapted to engage the shutoff valve vii after the communication valve o has opened, and as the lcom'iniinication valve 0,. is lifted `a further distance, the shut-off `valve m will be moved upon the member a .until it eiimages its seat saf'ety of a gaseous fuel supply system is greatly increased as it is practically impossible for an unnoticed leakage of ,gras to occur to any extent which. can'le-ad to a dangerous explosion. i

Modifications in the pressure balance and the manner of applying a safety-shutoff may be made without in any way departing from the spirit of this invention.

Having` now described my invention, what l` claim as new and desire to secure by Letters Patent is l. ln combination in a fluid pressure balanciiig` device, a movable partition separating two fluids, two pressure balanced valves operated b-y said partitionand adapted each to regulate one fluid, separate means whereby each of the said fluids after regulation Arains access to said partition, and `valve means controlling,r the access means 'for one fluid which operatein the event of thefsupply of' the other fluid failing to prevent the regulated pressure of the one fluid from acting on the partition and permit the unregulated pressureof the said fluid to dofso. 2. In combination in a fluidpressure balancing device adapted to maintain a. constaiit relationship between the pressures of two gaseous fluids, a movable partition separatingr said fluids, a. pressure balanced valve operated by said partition and adapted to regulate one fluid, a pressure balanced valve connected to said partition and adapted to regulate the second fluid, a conduit whereby `the second fluid after regulation gains aecess to said partition, a shutoff valve where by said conduit is closed,in the event of the supply of the first mentioned fluid failing,Y and a further valve which under such conditioiis permits the unregulated pressure of the second fluid to act upon the. partition.

3. 'ln combination ina fluid pressurebalancing device adapted to niaintaina constant relationship between the pressures of two; gaseous flu'ids, a movable partition separatingsaid fluids, two double disc pressure balanced valves operated by said partition and adapted each to regulate one fluid, ,al

4;. In combination in a fluid pressure balancing device adapted to maintain a constant relationship between the pressures of two n gaseous fluids, a' movable `partition separating said fluids, a double disc pi-essurobalunced valve operated by said iiiaiitition and adaptedto regi'llate one fluid, a double disc pressure balanced valve operated by said partition and adapted to regulate the econd fluid, ay conduit whereby the second fluid after regulation ,egaiiis access` to said parti` tion, a shutoff valve whereby said conduit is closed in the event of the supply of the first mentioned fluid failing, a passage from between the two discs ofthe valve regulating' the second fluid leading through said shutoff' valve, a resilieiitly pressed valveclosingr `said passage and means for opening said valve to permit the unregulated pressure of the second fluid to act upon the partition upon suoli a failure of the supply.

5. In combination in a gaseous fluid pre."- sure controlling device, an upright casing, a movable partition dividing said casing into an upper and a lower compartment. valves balanced in relation to the fluid pressures controlling.; the admission of fluids to said compartments, means connecting; the lower valve to said partition, a conduit whereby the fluid after regulation by said valve gains access to said partition, a shut-od' valve whereby said conduit is closed in the event of the supply of the other fluid failing,r and a further valve which under such conditions i compartments, means connecting the lower valveit-o said partition, a conduit whereby lll@ llOh

the fluid after regulation by said valve gains access to said partition, a shut-ofil valve whereby said conduit is closed in the eventof-the supply of the other fluid failing, a further lvalve which under such conditions permits the unregulated pressure of the fluid supply to the lower compartment 'to act upon the partition, a lever vtulcruined in said casing, means connecting the diaphragm to said lever, a second lever' lulerumed in said easing, ineans connecting the Valve in the upper compartment to said second lever, and means connecting' said second lever with `the first mentioned lever.

7. In combina-'tion in a fluid pressure balancing device, a movable partition separating` two fluids, two pressure balanced valves operated by s'iidpartition and adapted each to regulate one fluid and means affecting' one only of said fluids whereby upon failure of `the supply olf the other fluid a communica.-

tion is opened to allow the uncontrolled pressure of' the one fluid to act upon the partition and coinpletel)y stop the passage until a supply ot the other fluid is restored.

8. ln combination in a fluid pressure balancing` device, a movable. partition separat- 'ing` two fluids, two pressure balanced vulves operated by said partition and adapted each to regulate one fluid, n'ieans whereb7 upon failure of one fluid the movement ol the partition coinpleteljiY closes the regulating; valve 'for the other fluid, 1n Haus controlling one only ot said fluids whereliiy eonnnnniration between the partition and the outlet l'or llie said other fluid is closed and ineans \\'liereli eonnnunication between said partition and the inlet passage in LFront olf the said closed regulating valve is opened, so that said reignlatingl valve is held tightly closed until the pressure of the first liuid is restored.

9. ln combination in a luid pre1-suie bal* aneingdevice adapted to n'iuinlain a constant relationship between the in'essures o l two gaseous fluids, such as ras and air, u niovable partition separating said fluids, a. pressure balanced valve operated by said partition and adapted to regulate the air, u pressure balanced i'alve operated by said partition and adapted to regulate the gras, a f

conduit whereb the gas after regulation gains access to said partition, a shut-ell' valve whereby said conduit is closed in the event ol the supply ot air 'failing and a 'further valve which under such conditions permits the unregulated pressure of the njas to act upon the partition and hold the fas regulatinici- Valve tig'litlyv sluit until the air pressure is restored. .v

In testimony whereof I have signed in v naine to this specification.

ALEXANDER CONSTANTINE lNlDES, Jr.

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