US839319A - Steam-regenerative accumulator. - Google Patents

Description

` PATBNTBD DEG. z5, 1906. A. o. E. BATEAU. f STEAM REGENBRATIVB AGGUMULATOR.

APPLICATION FILED IAB.. 3. 1905. v

sel.

UNITED STATES PATENT OFFGE.

AUGUSTE cAMiLLE EDMoND BATEAU, or PARIS, FRANCE. STEANlv-F-IEGENERATIVE ACCUNIULTCR.

,Specification of LettersPatent.

Patented Dec. 25, 1906.

Applicatin `filed March 3, 1905. Seria-1 No.4 248,188.

I To. all-whom'zlt may con/cern:

Be it known that I, AUGUSTE CAMILLE ED'- -MoND RATEAU, a citizen ofthe United States,

residing at Paris, France, have invented a certain newl and useful Improvement in Stearn- Regenerative Accumulators, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming a part of this specification. f

M y invention relates to steam-regenerative accumulatore of such a type, for example, as that illustrated in my reissued Letters Patentl No. 12,295, dated December 27,1904,

though the inventionneed not berestricted discharge duct or opening for substantiallyl kpreventing the liquid from exceeding a given level by permitting the excess of liquid to .flow awayfrom the vessel, and a steam-escape valve preventing thepressure within the ves- 25 sel from Aexceedingl a predetermined limit, said vessel having-an outlet above v the level of the liquid for conveyingv steam from the vesln apparatus 4of this class as hitherto constructed there is danger of the pressure within the accumulator Aforcing the liquid (Water) back through thepipe that conveysthe steam to be regenerated, which may occasion great damage, lparticularly where the steam to beregencrated is suppliedirom theexliaust of an engine, as isusually the case. Obviously. backiiow .of water through this pipe that supplies the steam to be regenerated to the cylind'erof the engine would cause great inconvenience, if not material harmful results, as will be apparent to those skilled. in. lthe art. Such results are 'likely to happen when the engine stops, for

then the pressure within the vesselv of the accum ulator is n ot sulliciently counteracted by gine.

plemented by the pumping action of the env My invention resides in providing means for preventing the backflow of the water when the exhaust-pressure is removed or soreduced as to otherwise cause a backow of the Water. This result has been accomplished by means of a check-valve speciiically claimed in my application, Serial No. 248,189, iiled March 3, 1905, the invention, however, being broadly claimed in my present application, .or by means of valves regulated by Steam-pressure.

Where steam-pressurefcontrolled valves are employed, I preferably provide a shunt or bypass-between the pipe that conveys the exhaust-steam to the vessel of the accumulator, in which bylpass there is included a valve that is so adjusted that when the pressure of the exhaust-steam is notl below a predetermined value said valve will be closed but when the ressure due to the exhaust-y steam within tfie pipe is sufficiently reduced or is absent lor when there is the pum ing action heretofore specified the pressure om the vessel of the accumulator will be effective upon the valve to unseat the valve, and thereby permit steam to pass through the said by-passjnto the exhaust-steam-'supply pipe, whereupon 'sullicient pressure is established within the said pipe to revent the backhow of water. l do not wis i to be limited, however, to the source of supplemental pressure `from which pressure-is supplied to the pipe that conveys the exhaust-steam to `the accumulator, as in practice it may be desirable to eliminate the by-pass between the source of pressure distinct from that afforded by the steam within the vessel of the accumulator, vwhich supplemental source of pressure (that is, supplemental with respect to the pressure afforded by the exhaust-steam) may evenbe the boiler that supplies the steam to operate the engine from which the exhaust is passed to the accumulator. y

. I Willexplain my invention more fully by reference to the accompanyingdrawings, in

which- Figure 1"'is a view insectional elevation diagrammatically indicating the preferred embodiment ofthe invention. Big. 2 -=is a of my invention.

view in sectional elevation of a modification Fig. 3 is another view in sectional elevation of another modification of my invention specifically claimed in my copending application.

Like parts are indicated by similar characters of reference throughout the different figures.

The-vessel a of the accumulator is that in which the exhaust-steam is regenerated, this Vessel a being designed to contain liquid b, which is prevented from exceeding a predetermined level by means of the .discharge duct or opening @,that projects within a vessel d, which communicates with the vessel a through pipes e and f, located above and below the level that is desired for the liquid b, respectively, Va float-valve g opening and closing the communication between the pipes c and the vessel d, according to the evel of the liquid in the vessels a and d. Piping h affords communication between the sup lyof steam that is to be regenerated,

suc as theexhaust-piping of an engine, the pi ing h directing steam into the liquid, for w ich purpose said pipe may be provided with a horizontal perforated extenslon i, extending substantially the length of the vessel a, as indicated in Figs. l and 3, or whichmay terminate at the Wall of the vessel a; immediately adjacent to the piping h, Jfor with either .construction the steam is led into the Water from said piping h, the water serving .to operate upon the steam thus admitted hitherto in a manner now well understood by .those skilled in the art and explained in my aforesaid patent, which operation need not here be specifically described. An outlet l7c is provided above that level of the liquid b to which said liquid desirably is limited, so that the regenerated steam may be conveyed from said vessel without carrying with it the water of the vessel, whereby such regenerated steam may be effectively adapted to o crate steam-driven motors or engines. In view of the fact that the steam within the vessel a may fluctuate lwidely in pressure and in order that the regenerated steam may be supplied to the load it is to operate at a pressure not exceeding a given limit a safety or steam-escape valve l 1s employed, which.

valve is only unseated when the pressure 1n the vessel a exceeds the limit for which the said valve is set to accomplish the result desired. 1

In order that the ressure Within the vessel a may not force tiie li uid b back through the piping' h and in or er that the engine that may be connected with said piping z may not pump said liquid through the pipe after the operating-steam has been cut-oli from the engine and before the said engine is brought to a stop, provide the apparatus shown in Fig. l or Fig. 2 or Fig. 3, that serves to prevent such backilow of said liquid. I .n

Fig. 1 this supplemental apparatus resides 1n a by-pass m, that includes as a component part thereof a valve-chamber n, this by-pass or shunt being lconnected between the vessel a at a point above the liquid b and the piping h. The valve o within the valve-chamber n is so weighted or balanced that it will not open when the pressure within the piping h, due to the exhaust or low-pressure steam. flowing therein, is at or above a predetermined value, such low-pressure steam exerting pressure upon the upper side of the valve 0, while the steam withmthe vessel a exerts pressure upon the lower side of said valve, said latter pressure, under conditions just mentioned, then not serving to effect the elevation of' the valve. When, however, for any reason'the pressure of the steam upon the upper side of the valve o is below the predetermined value, the pressure of the steam within thevessel a will ciiect an elevation of the valve o, whereupon steam is admitted from the said vessel to the piping it at a point above the level of' the liquid 1)sosthat the liquid in the said vessel is prevented from rising within the piping 7i.. lfhepressure in the vessel a may fluctuate, in which case the lower limit placed for the steam-pressure Within the piping 71, may correspondingly fiuctuate. Obviously the level of the liquid b may fluctuate within certain limits in the operation of the accumulator.

In Fig. 2 a valve p is interposed between a supplemental source of steam-pressure q and the piping'h. l speak of the source of steampressure as being supplemental," by which term I mean that it is supplemental with respect to the source of vlow-pressure steam that supplies the piping h. The valve p is so set that when the pressure in the piping l1l is below a predetermined value said valve will open to admit steam from the source q, the steam admitted from this source being of sufficiently high pressure to restore the pressure within the piping or provide su fiici'cnt pressure within said piping to prevent the steam within the vessel a from forcing the water b back through said piping and to prevent any )umping action of the engine from drawing t is Water.

In Fig, 3 there is not provided any means for supplying steam to the piping h in the manner indicated in Figs. 1 and 2, but said piping is provided with a valve 1, desirably a Heat-valve, that is subject to the pressure from the steam within the piping h normally to maintain said valve from its seat, whereupon the said steam may be passed through the valve-opening into the vessel a, but which' valve is subject to the pressure of the steam from the interior of the vessel a. when the pressure in the piping h has been suiiiciently reduced, so that the said valve is Ils to the connection of lthe by-pass .connected with the vessel c, as any connection that will make the valve in saidby-pass subject to regenerated steam-pressure comes Within the scolpe of my invention.

is obviousthat many changes may be vmade in the apparatus of inyinvention-without departing ronithe spirit thereof, and I do not, therefore, wish to be limited to the precise construction shown; but',

' Having thus described my invention, I

claim as new; and desire to secure by Letters K Patent, the following:

1. In a steamfregenerative accumulator in combination, a vessel containing liquid as a heat-carrier, piping' for directing steam into the liquid, a duct or opening for substantially maintaining the liquid at a given level, a steam-escape valve, said vessel having an outlet above said level for conveying steam from said vessel, a by-.pass between a portion of the accumulator containing regenerated steam and said piping, and a valve in said by-pass subject to regenerated-steam pressureandpressure of steam'within said piping'to check backflow of liquid through said 2. n a steam-regenerative accumulatorin combination, a vessel containing liquid as a heat-carrier, piping for directing steam into the liquid, a duct or opening forsubstantially maintaining the liquid at a given level, a

` steam-escape valve, said vessel having an outlet above said level for convey-ing steam fromsaidvessel, a by-pass between a portion of the 'accumulator containing. regenerated steam and said piping, and a valve in said by-l ass for admitting regenerated steam to sai piping to cheek the backflow of liquid throughsaid piping. v v

3 In a steam-regenerative accumulator in combination, azvessel containing liquid as a heat-carrier, pi ling for directing steam into the liquid, a uct o r opening ,for substan- V tially maintaining the liquid at a given level,

a steam-escape' valve, said vessel having an outlet above said level for conveyingste'am from saidl vessel, and a vvalve between .said

piping and,A a source of steam-pressure and 4su )ject to pressure ofsteam in said pipin and said source to check the backflow of liqui through said piping.

p n av v"steam regenerative accumulatorv in combiiiationfa,vessel containingliquid as aheat-carrier, ipingi'or directing steam into the liquid, a uctor openingfor substantially maintaining the liquid ata given ievel, 'a steam-'escape valve, said vessel having an outlet above said level for conveying steam from said vessel, anda valvebetween said piping and a source of steam-pressure to check the"backflow of liquid through ,said piping. I

v5. In a steainregenerative Aaccumulator in combinatiom a vessel containing liquid as a heat-carrier, piping Jfor directin0r steam into the liquid, a duct or opening stantially maintaining the liquid at a given level, a steam-escape valve, said vessel hav-l ing an outlet above said level Jfor conveying steam from said vessel, and a valve subject to regenerated-steam pressure and 'to pressure of steam within said piping and. serving to check backilow of said liquid through the piping.

6. In a steam-regenerative accumulator in combination, a vessel containing liquid as a heat-carrier, piping for directing steam into the liquid, a duct or opening for substantially maintaining the liquid at a iven level, a steam-escape valve, said vessel aving an outlet above-said level for conveyingsteam from said vessel, vand a valve subject yto regenerated-steam How of said iquid through the piping.

7. In a steaiii-regenerative accumulator in combination, a vessel containing liquid as a heat-carrier, piping for directing steam'into the liquid, va by-pass between a portionvofV the accumulator' containing regenerated steam and said piping, and a valve in said by-pass subject to regenerated-steam pres' heat-carrier, piping for directing steam into f the liquid, a by-pass between a portion of the accumulatorcontaining `regenerated steam and said piping, and a valve in said ,by-pass' `for adinittingregenerated steam tol said piping to check the backflow of liquid through. saidl piping. K

9. In a steam-regenerative vaccumulator in combination, a vessel containing liquid as a,

heat-carrier, piping vfor directing steam into the liquid, and a valve between said piping and .a source of 'steam-pressure and subject topressure of steam in said pipingand said ifor sub-A roo IIO

source to. check the backflow of liquid through said piping.

10. "In a steam-regenerative accumulator in combination, ,a vessel containing liquid as a heat-carrier, iping for directing steam into theliquid, an a valve between said piping and a source of steam-pressure to check the bac-know of liquid through said piping.

' 11. In' a steam-regenerative accumulator Vin combination, a vessel containing liquid as a heat-carrier, piping for directing steam into,

the liquid, and a valvejsub'jectto regeneratedn semen;

steam pressure and to pressure of steam l In Witness whereof I hereunto subscribe lo. Within said ipingand serving to check baokmy name this 8th day of February, A. D.

`HOW of seid `iquid through the piping. 1905.

. said liquid through the piping.

12. In'asteam-re eneative uccumulator g in combination7 .a vesel containing liquid as AUGUSTE' CAMILLE EDMOD RATEAU' a heat-carrier, piping for directing steam into Witnesses: the liquid, and avalvesubjeot to regenerated- P. J. A. CHALEIL, steam pressure'serving to check backiow of JOHN BAKER,

i EDWARD W. DIEUL.

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