US1789541A

US1789541A - Liquid-relief valve

Info

Publication number: US1789541A
Application number: US131645A
Authority: US
Inventors: Campbell Grant
Original assignee: Individual
Current assignee: Individual
Priority date: 1926-08-26
Filing date: 1926-08-26
Publication date: 1931-01-20
Anticipated expiration: 1948-01-20

Description

Jan. 20, 1931. G. CAMPBELL I LIQUID RELIEF VALVE Filed Aug. 26, 1926 KWWA g1 MWL A TTU/m15 ya.

.and this ymay be adjustedinwardly to in-` crease ythe e. compression, and .vice versa, by

"'- Lchamber 19 andfrom the casing projects in-` y 4wardly a post or extension 20 having an out# 'I Ineansof a screwl7 having a locknut 18 holding it in the kdesired adjustment. Y n nside the body or casing 12.isthe valv let ypassage-or bore 21, theI inner extremity of which is fittedwith a valve seat or` nozzle 22,

the passage within which is preferably atlv rightangles tothe diaphragm 10 andthe ef# fectiv'e'or seating surface ofk which yis parallel l with .the diaphragm. Opposite tothe valve* seat 22 is the movable valve member 23,`wh ich may consist of a simpleat; disk supported in agniovable yhead 24,. andl clamped ,mthe' `recess ofthe head-by an apertured nut orrire-r taining ring 25.l .c The head 24 is formed-with -an outstandingystem 26by whichit isguided y as thefvalve'more or less opensor closes.` vThe l stemftgis provi'dedwith a longitudinale-pasy `sage227V connectingiwith a laterall passage`28 by which the pressureiinthe valvechamber 19 may be communicated to the space at they endof the Stem26 to preclude theeifect ofa` y The valve disk 23 vandgits carryinghead "24;" are mounted at theV forward end of a yoke `:.30 attached vat the forward side'ovf-thedia-`v` phragm- 10,v its. threaded shank extendilfigk through vinto clamping engagement "with the l diaphragm disk 11;l T he yoke 30e`itends Aforf Vwardly atboth sides of theprojection 20 'and k'to the twoisides of the yoke are connectedV by a top Jpiece or archV 31, sovthat in front view the yoke will take substantially thelshapeof 'the' letterUVV inverted. The valve disk 'head 24 is connected to the arch by'a set screw 32.v

as seen in Fi'g. 1,fand atfthe two sides arc vset screws V33, as seen in Fig.l 3. These' de- "scribedparts may be accessible throughna re` movable cap 35 having ascrew engagement f v with the body 12. This screw cap has an in-A wardly extending barrel 36 forming agilide for thestemf26 of the head 24, while the bare.' ,rel is surrounded byacompressed spring37 pressing. rearwardlyv against the head. and

ytending to close the valve forcing'the disk 231tow`ards the seat22s 1 y y l y y y It will be observed that the adjustment of y the valveiscontrolled by the position ofy the` diaphragm which-in turn yis determi-ned byf thefexisting train pipe pressure in the chamber 19 opposed-by. the existingpressure inthe-chamber 38and modified by theper- Vmarient pressures of the containedsprings14,

, 15 4and 37. Inaccordance' with this inventiontherear chamber38-is employed as a valve controlling chamberyfor example-by con tinually'passing into and fromthe chamber hot water or steam or a combination of them, namely ,by means of inlet'andv outletorifices V'orequivalent progressive escapefclevices, and utilizing-the varying resulting pressurein the controlcliamber by applying it to thefsensitive'diaphragm to efectfthepartial or total than :when steam only traverses the orifice,

this bein'grdue to` the well known :restrictive action'y of the-oriceupon flow,t of Steam '01# 0theri ga,s ,m f M I i The orifices,` .connecting passages i may be `advantageously.4 and., compactly provided asl follows. AA vertical bore or passage 39 is y l shown formedin the upper partof the rear casing 13 extending from the y periphery into; the control chamber -38 while a similar vertical passage40' is shown formedfin the lower part of theV same" casing; the two vpassages 'v 39 and 40 being exteriorlyclosedby plugs 41.

K ,-.Aihorizontal passage 42 leadingto Ithe inl let orifice 48 may be formedjas aV horizontal bore through fthvecasing :13, stoppedjrby an externalplug whilel asimilar :horizontal ypassage43 I naygbe vprovided, at the lower part f 'fof-"the casing in connection with Vthe outlety orifice, this also stopped by afplug` 44. In

'alinenplent with j thel passages 42 and"V 43 there are shown vbores for. passages 45 `and 46 produced. at -therearsideof the valve casing 1 2, l the upper passage 45 `connecting with'- the upper partof the valve chamber,.while the lower passage 46 connects withv the outlet passage 21:.leading to the ldischarge lpipe 9.

An inlet'-;oriiice"48 is shownf interposed .in

line Withthe upper passages 45 and 42,*while an out-let.y orifice49 issilhlarly interposed be-v tweenthelower. -passages@ and; 46. The sizes of the orificeslwill vary in accordance with icoV theJ expected pressures, but preferably' the outlet orifice has a larger area than the inlet 'orifice Y. f. l

An advantageous way ofv producing the inlet and outletorifices isvby so extending the piece of sheet metal .lwhich constitutestlie diaphragm asto standvacross the orifice pas.v *Y

sages',;and forming the orificesby punctures in suchfsheet vmetal diaphragm. The arrangementfindicated ,in ,the figures may be varied. Thus as indicatedinFig. 4 the passages 45 and42 may be lomitted andthe inlet orifice 48'l may be formed directly in the annular or vflexing portion ofthe diaphragm' 10"` clamped between the casings 12a and 13a.

On the otherv hand-'the outlet orifice instead of discharging through'pa'ss'age 46' into the same finalpdischarge pipel 9 whichreceives thedischarge ofthe valve may` discharge di'- sirableto maintain the heating system in acvtion and the trainpipe free of condensate. 1 The orificey system is shown as containing two orifices, but might contain more, in vtalldem,l lthe final one being. preferably the'A largest, vand discharging to atinosl heric or comparablyv 'lowfpressure` The nal .dis-f charge may be into ,thel heating pipes of the car because the 'heating pressure is low due to thelcommon use of a pressure reducer or va-V por regulator between the train pipe and mating-pipes. For` example the Voutlet 9y from the reliefl valve may extend to the inlet of the car heating pipes.- This utilizes the' heat "of the outlet steam and combines the final water` discharge with that from the heating coils.

L vention;lbut since various matters of opera,-A

.l There has thus ,beendescribeda vuidrelief valveiortrap embodying the Lprinciples and .attaining the objects of the present intion, arrangement, combination, structure and detail may k.bemodified without` departing from the principles, it is not intended to limitthe invention vto such matters except sof far as set forth inthe appended claims.

f What is vclaimed is:`

1." Apparatus for automatically dischargin y accumulated `condensate comprising a collecting passage, a reliefl valve arranged to receive and dischargecondensateand having aV pressure sensitive devicecontrolling it,f,a

chamber at one side ofsaid sensitive device delivering full pressure thereto, and a cham-V ber at the other side delivering depressed pressure thereto, av connection conducting condensate to. the second chamber lwith rejstricted inlet thereto, anda continuously open4 restricted "outlet Vfrom said second chamber." e e ,2. Apparatus for automatically discharging ,accumulated condensate comprising a Vcollecting passage, a relief valvev arranged to receive anddischarge condensateand having a pressuresensitive device controlling it, a chamber at one side of'said sensitive device VdeliveringV fulll pressure thereto, and a chamber at the other side. delivering depressed pressure thereto, aconnection conducting condensate to the second chamber with restricted inlet, a restricted outlet from said secondv chamber, and means working with the depressed pressure to keep open the relief valve except Whenthe fulll pressure is greatly in excess of the depressed pressure.

- 3. A relief valve for relieving mixed fluid of excess liquid comprising a casing containing a 'pressure sensitive device withk a valve chamber at one side thereof and a control chamber athe-othe'r side, passages conduct-v ing fluid to the valve chamber and conducti ing excess l liquid to the controll chamber through an interposed orifice, an orifice outletfrom the control chamber permitting ycontinuousescape from the control chamber during admission of liquid thereto l'throughV the 'i first orifice, a valve arranged for` discharging liquid from: the yvalvel chamber, and a connection whereby theV sensitivev device adjuststhe valve 'to dischargeliquid when in excess yand vice versa.v v

4. Liquid relief-apparatus n for automatically vdischarging accumulaed vliquid coin,-`

prising {a` valve casing f containing a vvalve,

chamber and a controlchamber separated by a pressure sensitive "device, ka-valve means insaid valve chamber arranged to be controlled by the movements ofthe `sensitive vdevice and adapted'bodil'y togdischarge accumulated liquid, -an orifice connection "from the valve chamber to the Control chamber anda continuouslyr open orifice'outlet ,from the'control chamber. l

5. Liquid reliefl apparatus for automatically discharging acmmulatedk condensate comprising a valve casing containing a valve chamber andr a vapori'zation,y chamber separated by a pressure sensitive device, a valve `means in said valve chamber 'arranged to be controlledby the movements of4 the sensitive mulatedliquid, an orificeconnection from the valve chamberto the .vaporization chamber andan orifice outlet vfrom' the vaporization chamber; whereby constant .flow 'occurs through `the vaporization chamberfto the atmosphere, whereas'v direct discharge through the valve chamber occurs onlyV as permitted by or under controler thedi'aphra'gm. A6. Apparatus" as"` in claim 5 and wherein vboth the orifice'inlet tol andy orifice outlet from the vaporization chamber are formed in chamber-to-chamber passage-sin the casing walls. i

7 Liquid relief apparatus forautomati- 'cally dischargingl 'accumulated hot liquid comprising a valve casing containing a valve chamber and a'vaporization chamber with a pressure sensitive device separating them, a valve means in said valve chamber arranged to be controlledV by the movements of the sensitive 'device and adapted bodily to, discharge accumulatedliquid, an orifice formed directly in' the sensitive device for connection from the valve chamber to the vaporizaydevice and adapted bodily todischarge accullO tion chamber and a continuously open orifice Y formediin the Y the valvefchamber to the *control chamber, Y and 'vanforiiice]outlet-from*'the control` o c f Y valve arranged to receive and discharge con-UT chamber. Y f 9- Apparatus the i'irstorice connection inthe casing Walls,

.l .v `is formed near the Vupper .part ofthe'valvechambei,'vvhereby liquid ,will notlftraverse l the sameuntil thevalvechamber iills' up. rloically discharging accumulatedfliquid corn-f p j chamber and av constantly 'openjoriiice outleti e VlOQLiquid reliefgappfa'ratus `for automatprising 'afwalledcasing containingea valve Y chamberfand a control chambergivvith apres- Vsure "sensitive diaphragm separating" them,`.ja l"valve means in said valvechamber arranged Y to be controlled bythe movements-of 'the diav phraginand adapted bodilyto dischargevacg' N cufmulated liquid, an orifice connectionlfrom `v Y the'valve chamber? to the control chamber 1 andan oriiice outletfrom the control cham!v 'ber'; the first' orifice connection being :formed in Athe'ca'sing vvalls7'and' the Voi'iiceitself be# as inv claim v-8 land wherein 14:.1Rvelief apparatus. fori-f aiitomatically discharging .accumulated stean'n. condensatem i 'Comprising @valveicsigwntallng .a Valve fil chamber and a vaporizationchamber:witha kpressure sensitive device separa'tin'g';them,a .'O .1f g f., valve means'insaid-valve chamber arrange`d-- to ybebpened b5/approaching movement offv I; thefsensitive device! and-vice versa'V andfl` adapted to v discharge condensate," a cons tantlyV open orifice connection l fromga! high .i

pointvvin the valve chamber. it()y thecontrol fromfthe' control chamber. .In testimony Wh reof, z I signature hereto.

ing 'an'eXtension of the diaphragm extendingy c y l into the casing `Walls.

11; Liquid relief apparatus ffor'aut'omat" Y yicallydischarging accumulated l liquid .com-

prisinge'a valvecasingvlcontaining ayvalve` 1 chamber and a'control chamber separatedrbyi` jr.

a'pressure sensitive device,v a valve means in f said valve chamber arrangedto be controlled by the movements `of the sensitive device and adapted'fbodily to dischargeaccumulated Y y c liquid, an orifice connection :trom thegvalve Y chamber to the control chamber', and an oriv fice outlet from the control chamber arc K ranged in the .casing Walls and discharging into the valve chamber discharge outlet.

12. Relief-apparatus 'or. automatically!` i Y densate and having apressure sensitive device controlling 1t7 a` chamber at one side of Y thereto; a' connection conducting excess con-p densate to thevaporization chamber With a` restricted inlet thereto,and a restricted out- K jY 5o l said sensitivedevice delivering full'pressure thereto,f andv a vaporization chamber yat the otherV side delivering'` depressed pressure let from said second ch'amberi-f v13. Liquid relief apparatus for automats ically discharging accumulated liquid c o'nrl-y i i prising a collecting passage, a relief lvalve arf"l ranged to receive and discharge the liquidjl and having a. pressuresensitive device controlling it7 a first chamber at one side of said v` sensitive device delivering -full pressure theretogaiid achamber'atfthe other .side deflic.; l Y

have

Y 1 GRANT CAMPBELL",