US1851598A - Attachment for gas governors - Google Patents

Description

m m H m w/ M N H N N2 w Q m F. P. SMITH ATTACHMENT FOR GA S GOVERNORS Filed April 29. 1950 March 29,1932.

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lPatentecl'Mar. 29, 7

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FREDERICK n emigr t GnessBoRo, nuwannsny, nssrenlonononn -nzanu TO Jennies I r:- i

. gznrparl, OEGLEN taxnnnw JERSEY I:, A ATTACHIVIFNTPFQBGAS GM-ERRORS i A iplicat ionffiled lpril 2e,

My invention relates to a new and useful I attachment for gas governor of the general type disclosed inmy Patent No. 1,763,376 and employed for controlling and regulating 5 the'fiow of gas preliminary to fits flow through a conventional gas meter whichf is interposed between the source of supply-and the point of use or consumption' My invention further-relates toian attach 1L ment for gas governor of this general char? acter which, in addition to controlling and" regulating the flow of gas to the desired volume is' also adapted to stop thefiow of gas entirely, when the consumption of the gas 1 is partially or completely stopped, thereby eliminating all danger of explosion dueflto an accumulation of unconsumed gas, and at the same time preventing waste of the gas. My invention further relates toan attachment for gas v governorfof this character which is equally adapted'for use in conjunction with allkinds of gas meters and supply systems without necessitating any' alteration of the construction orinterfering with-the operation of the same;

My invention further relates to a novel attachment embodying the novel and advan;

tageous features of my invention which is adapted for installation on gas governors of future manufacture as well as on conventional gas governors already in actual use to impart to the latter certain novel advan tageous functions and attributes not heretofore possessed or accomplished thereby eliminating the necessity of totally discarding governors already installed and rendering the advantages of my novel invention attainable at a minimum cost," 7 :1 I 1 To the above ends my invention consists 4c of a casing having a gas inlet leading from a source of supply, and a gas outlet'leading' through a gas meter to apoint of consumption, there being free communication between said inlet and outlet, a diaphragm transversely dividing said casing into upper and lower compartments, a pipeleading from the lower of said compartments tothe atmosphere, a fluid for normally sealing the lower end of said "pipe, a pipe leading from the upper of said compartmentsto the atmosphere and and claimed.

1930. Serial Nb. 1448320.

having itslowerifre'e an juxtaposed mule adapted to be actuated by the increase; of pressure in said lower compartment- "to yseal I the pip ment fromthe atmosphere.

tageous features" which is adapted to be installed upon governors of conventional con stru'ction already in {actual use and operation.

'My'invention' still; further consists of various; other novel features of construction and advantage all as hereinafter described For the purpose of'illustrating my 'inven-' tion Ihave shown in the'accompanying draw-- ings several forms thereof -w hioh are at present preferred by'me', s'incefthe same have been found in practice to 1 give satisfactory and reliable results;although it isto be u'nderstood that the various instrumentalities of Which'my inventionconsistscan be variously v v arranged and organiied and that my invention is not limited to-the precise arran'gement and organization of the instrumentalities as herein shown andldescribed. I

e leading from s'aidiupperfcompart- 1 Myfinventionffurther consists'ioff-an" at-' '7 tachmont embodying the "foregoing adva'n Fig." 1 represents; a vertical sectional" view l of a; governor-"embodying my invention,' cer; tain partsjbeingshownin elevation? f Fig. 1 2 represents ayiew; similar to Fig; 1 showing a modified form of myinvention f Referring to Fig. 1 of the drawings,fwhich y illustratesa-novel governor constructionembodymg' my-1nvent1on,..and- 1n which similar numerals of referenceindmate 11ke parts, 1

designates the governor casing whichis composed of bottom 2 and top 3, suitably secured or assembled'as at ,5 designates a gas inlet leading fromasource of supply (not shown) a and 6 designatesa gas outlet leadingto'a point of consumption through a conventional gas meter (not shown); 7 des gnates a cap secured to the outer'wallsof'the inlet 5fand outlet 6 at 8. Inlet 5 is provided with a U- shaped "extension 9 which is provided with the port 10 which is controlled by the valve ll adjustablycarried' at jone end of the lever 12 which is fulcrumed n13, andthe other end of which is pivoted tothe bracket 14; at 15. w

"The bottom wall of the U-shaped extension 9 I of inlet is spaced from the uxtaposed' wall 7 cipitated therefrom due to a decrease in the .screw'21or'its'equivalent,- 23 designatesa spring which extends upwardly through the air-tight boss 24 and the tension of whichis' I regulated by set screws 25, said spring being of the cap 7 to form a channel 16 for the reception of foreign matter which maybe prevelocity of the gas. 18 designatesfia .diaphragm which is'clamped between the bottom disc 19 carried by the bracket 14 and the "upper disc 20, said discs bei-ng'se'curedby the adapted normally to urge the diaphragm 1 8 downwardly.) The diaphragm 18 is flexiblev and lagsat 26 to permit of upwardand down- I ward movement in a; manner hereinafter de -i scribed; .28 designates a cup-like member which is, secured to the casing 1 by azunion joint .29 or in anyjother' suitable manner, and

j 'which is provided with. the outlet 30 leading to' theatmosphere. Thecup 28 is provided 7 18 and terminatingata point in proximity to the bottom, 36 of. the cup 28. 37 designates with the;'{inner 'partition31 which divides said cup into 'two compartments '32, and" 33- said: partitions terminating at, the point below the upper edge'ofthe cup 28 so that'com munication is established between the chami '0' bers32 and 33 over the ,topedgeof saidpara, i nates ap pe or'tube leading'from the'lowe'r tition in the direction of the arrow. 34 desigr.

compartment .35 formedbelow the diaphragm asimilar pipe or, tube which communicates through the passage38 Withthe compartment 1 39'formed above-the diaphragm18. the lower endfof said pipe being positioned in proxunity to the bottom'36 of-thecup. 28. It will be seen" that thetube 34 leading from the lower compartment 35 leads intothe chamber 32 While the tube 37 leading from the upper compartment; 39 leads into the "chamber 33.

' 4O designates a' fluid suchasymercury, vin a therreferredito, r

; out-through the outlet 6 to they point of con-.

sumption. If the consumptionof the gasiis partly or completely stopped, theexcess accumulation of gas in. the compartment 35 raises the diaphragm 18, which inturn l'owers the valve 11 to'close the port 10 to shut off the gas supply automatically- When the pressureof the-gas in the compartment 35 has been relieved due to a resumption, of the i consumption of the gas, thediaphragm 18 is lowered by the'spring 23 and by the pressure of the atmosphere with which thejcompar t ment39 above said diaphragm.communicates,

thereby raising thevalve 11 toopen theport 10 to permit the further flow of gas through the "inlet 5and the outlet 6, the usual-j manner. ,g V (a o To take care of leaks or defects in the valve 11, it has heretofore beenthe practiceto provide the compartment 35 with a safety valve arrangement which permitted the escape of gas accumulated in the compartment when thepressure reacheda predetermined flimit,

thus guarding against the occurrence of'expl o sions,v (see Smith Patent No.71,l99,885; if

Gaunt etal. No."1,626,581, andothers). The

disadvantage of thispractiee, which it'is the primary object of'my invention to remedy,

resided in the fact thatfwhen theepressurejof the gas in the compartment 35, was relievedf (by the escape of the 'accumulated'gas there in into: the atmosphere) the diaphragm 18 was lowered (by the spring 23 and the pres-- sure of the atmosphere) and the'valvell raised, thereby fully opening the port 10 and permitting the free flow ofjgas into: the compartment 35. This resulted inthe rapid refilling of the compartment 35 -with gas, which-in turn escaped into the atmosphere whenever thepressure in said compartment" reached thelimit'tofwhichthe device is ad:

usted.

Bymy construction. (see left hand portion 1) when the pressure of thegas within I the compartment-35has reached the limit to which the device ,is adjusted,-the' vmercury 40-is e iec'ted ifrom thetube 34 thus causing an overflow Of themercury .Ofrom'the Cl'ltlln: bGZ'BQ- into the cha1nber;,33, thus sealing.-,tl1e I lower-end of'the pipe '37. .The excess gas from the compartment 35' .now escapes through theftube-34 to. the atmosphere through the'outlet 30, Due to'vthe partial vacuum thus created in the compartment'39 (by the raising o-frthe diaphragm ltl bythe pressureof gas in the compartment 35 ):and

by sealing the lower end, of the'pipe or tube 37 toshut off the-compartment 39 from the atmosphere, the diaphragnrl8 is maintained finite upper position, thereby. maintaining a the valve 11- in its lower position to close j the port 10'. In this position of the parts thejflow of gas into the compartment 35 is determined by the size of the leak in the Valve 11,ascom-paredw1th the flowxof gas through the fully'opened port 10as would be the case were the diaphra'gmlowered and'the valve 11 raised, inthe referredgto. V e r V i Furthermorejn this condition of the parts, and until the leak in the valve llshall have been repairech'theexcess gas in the co-mpartmeat 35 bubbles through the mercuryor other sealing fluid in theco'mpartment32 and esor danger of explosion and without theaid of any safety valve arrangements; Thus, by F prior art constructions 7 capes to the atmosphere through the tube 34 and the outlet- 30, thereby eliminatmg' rislr providing the tubes 34 and 37 communicating with the compartments 35and 39 respectively; I provide a vent for the compartment 35' to permit the escape'of gas'accumulated therein into the atmosphere,and I sealthe com-- partment 39 from the atmosphere to maintain a partial vacuum which :tendsto retain the diaphragm 18 in its upper position and the valve 11 in its lower closing position, thus reducingthe amount of gas flowing into the compartment 35 to the mmimum amount flowing past aleaky-valve11 in'lieu ofithe volume of gas which would normally fiowf through the port 110 whenthe latter is opened by the raising of the valve 11'. i

In order to guard against tne undue and undesired sealing of the compartment 39 and the consequent permanent-retention of the diaphragm '18 in its upper position, andgof valve. ll in its lower. closing position,iI space the bottom end of thetube 37 fromthe bottom ofthe chamber 33. Thus, if thegas' pressure in the compartment shouldb'e comeexcessive, but not sufficiently so to:justify or warrant the permanent closlng of the valve 11, and only a part of the mercury istransterred from the chamber 32 into the chamber 33, the compartment 35 rema ns sealed and the compartment 39 remains in communication with the'atmospheresince the lower end of the tube 37 is spaced from the bottom of the chamber 33 so that, when the temporary congestion of the gas in the compartment 35 has been relieved, the diaphragm 18 may still be lowered to open the valve 11, and is not locked in its upper position. In other words, by spacing the end of tube 37 from the bottom of chamber 33, it is necessary that all the mercury ;40 should be ejected from tube 34 and into chamber 33 (which can take place only when the pressure in compartment 35 is such as to warrant permanent closing of valve 11) before the compartment 39 is shut off from the atmosphere to maintain the diaphragm 18 in its upper position and the valve 11 in its lower closing position. I I

The mercury 40, transferred into the chamber 33 may be drained therefrom by removing the plug 41, and is then poured back into the chamber 32 sothat the same amount of mer cury initially placed in the chamber 32'can be used indefinitely. It is'further under-' mercury 40 is placed in the chamber 43- (in lieuiof the chamber 32)@ and overflows into the chamber 44 throughthe aperture '46 in partition 45intoithechamber 44, when the pressure in the compartment 35 below the diaphragnr 18 has reached a 'predetermined limit. The operation of thisformofmyim vention is the same as that detailed; in connection with Fig; 1,, and it is not; necessary to dwellupon Ililjlil greater detail.

' t willthusbe seenthat the pr nciple of 1,

operation-oi my inventionconsists in displac ing the sealingfiuid initially contained" in the j tubes 34,'to causean overflow Lot the s aling fluid contained in thechambers 32 "or 42 into "the adjacent chambersand 44 'to se'al;the,

bottom ends of the tubes 37. In orderjtodo th s, it ls merely necessary-to have'the chambrsaa'a and 42 brimful of sealing'fiuid,

'andt'o so regulate-the si'Ze ofthe tubes 34 and the spacing of the bottom ends of the tubes 37 from thebottom of the chambers 33 and 44, that when the liquid initially? contained inthat portion of thetubes 34 which is im- 1,

mers'ed in the sealing fluid 40 is" displaced theretrom,due to the excess pressure inthe l compartment 35,1 it will cause the overflow of "sui licient amount of; fluid from the compartments 32 and 42 into the compartments 33'and-44respectively to seal the bottom ends of the tubes 37 Afterthat has been accomplished, any further excess pressure in the compartment 35 will cause theexoess gasto escape through the fluid 'remainingin'the 'compartments32 and 42 and pass out to the atmosphere{throughthe'openings o I am aware that the invention may be embodiedin other specificforms without departing-from the spirit or essential "attributes thereoi a'nd I therefore, desire thepresent embodiment to be considered mall-respects as illustrative and not restrictive, reference being hadto the appended claims rather than to the toregoingde'scription. scope of the invention. Havingthus describ indicate the d my invention a what I' claim is new and useful, andfdesire ,tdfse cure by Letters 'Patent, is r a ":1; An attaclintent for-a gas prising two I chambers separated by a partif tion, pipes :leading from saidchambers to said" gas governorand a sealing 'iiuid in one governor cam of said chambers for;normally sealingithe end of the corresponding pipe, said fluid being adapted to=overflow into the other of saidchambers to seal the bottom end ofthe corresponding pipe, when. said fluid is subiected top'redetermine d pressure.

2. An attachment for a governor comprising two chambers separated by apartition communicating with each other and with the atmosphereypipes leading from said gas governor into said chambers, and afsealing' fluid inthe bo-ttomof one of said chambers for normally sealing the end otthe corre-' spendil gip pe, as fluid being adapted to overflow intoctlvle other osf' said -,cha;mhers to a v An attachment flora seal the bottom endqoifibhe corresponding p pe -when said fluid'is subgected to prede termin'ed pressure. I

zgas governor com.-

prising a casing, partition dividing saidcas ing into twopompartments which intercommunicate over theztop edge' of said partition, pipes leading from said gas governor to said compartments, and a sealing zfl'uid in one of said compartments forfnorm'a'lly r scaling the lower. end of.the:correspondingpipe, said fluid being adaptedto overflow into, the other of chambers to seal'the bottom end of the corresponding pipe, avhensaid fluid is subjected to predetermined pressure; .jj l An attachmentfor a governor coinprising a casingya partition in-sa'id casing dividing the latter into we communicating 'c ompartments,;a sealijngfluid ino'ne of said compartments, a pipeleading from said gas governor and havingitslfree end sealed by said fluid, a second pipe leading from said gas governor into thesecond of said compartments, the fluid in said first [compartment beof said second pipe.

ring adapted to be displaced therefrom 'into' said second compartment by the pressure within the pipe leading to said first mentioned compartment to relieve the pressure Within said pipe and toseal the lower end 5; An attachment for a-gas governor includingaeasing and a movable diaphragm dividing'said casing intotwO compartments, said attachment; comprising two chambers separated a partition, two pipes leading from, said compartments to said. chambers,

was I communicating witheachotherandwith the atmosphere, :pipes leading irom said com-' partments into said chambers, anda sealing flnidiinthe bottom 10f one-of said chambers V fornormally sealing the end of thelcorre- 'sponding pipe, the ends of :said pipes being a unequally spac'ed from; the bottomsgof the said ,attachmentcoinprising two chambers separated a partition, and ,intercommunieating over the topedge of said partition,

pipesleading from said'compartments to said chambers, the latter having a commonoutlet 1 leading tothe atmosphere, and a'sealing fluid V in the' bottom of one of saidchambers for normally sealing the end of the'corresponding pipes'aid fluid being adapted to be disj placed the pressure within said pipe into j the other of said chambersto relieve the pressure with-in I the corresponding compartment-of said gas governor and to seal the end of the pipe leading from the other of i said compartments from the atmosphere.-

; FREDERICK,- B. SMITH;

and a sealing fluid in one of said chambers,

for normally sealing the end ofthef corres spending" pipe, said Ifluid' being adapted to overflow-into the other-of said chambers to Seal'the' bottom'end of the{ corresponding pipe, .Whens'aid fluid is subjected to predeteri' mined pressure. r a 1 6. An attachment for a gas governor ncIuding a casing and a movable diaphragm dividing said easing into two compartments, said attachment comprlslng two; chambers communicating with each other and with the atmosphere, pipes leading from said compartm'ent's into said chambers and asealing.

fluid in the bottom of-one ofsaid chambers for normally sealing the end of the corre-Vv sponding pipe, the ends of both of said pipes 7 being spaced from thebottom ofthe corr'esponding chambers, said fluid being adapted to overflow into the other of said chambers to seal the bottom end of the corresponding pipe, When'said fluid is subjected to predetermined pressure.

" 7. An attachment fora gas. governor, in; Y

eluding a casing and a movable diaphragm dividing said easing into two compartments,

1 said attachment comprising. two chambers

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