US1038826A - Injector. - Google Patents

Description

J. BASGHKIN.

INJEGTOR.

APPLXCATION FILED' P21121, 1912.

J. BASCHKIN.

INJBGTOR.

APPLICATION FIL'BD I`E B. 2l. 1912.

Patented Sept. 1'?, 1912.

3 SHEETS-SHEET 2.

J. BASCHKIN.

INJEGTOR.

APPLIUATloN FILED PEB. 21, 1912.

Patented Sept. 17, 1912.

3 SHEETS-SHEET 3.

N Mmm www JOHANN BASCHKN, CF KOLMNA, MDSCCYW, RUSSIA.

NJECTT' Specication of Letters Patent.

llatciitcd Sept. 17, 1912.

Application led February 2l.y 1812. Serial No. 679,036.

lornicd by the parts ot the two bores of the nnxing nozzle and ot the opposite outside iroveinents in ln'ectors of which the l'olg assembling, that is to say, il the one nozzle lowing is a specification.

'.lhe present invention relates to improve,

f ispushed too far or too little into the othe will change the dimensions of these pas-- ments in injectors and hasI the object tor improve the working of such injectors by a pecl liar construction and arrangement ot' the parts and to facilitate the assembling otE the various parts ci which the injector composed.

lhe invention :further relates to an injector in which after it has been started an additional conveyance oit water can be effected by the overflow or slohbering tube without any valves or the 'like having `to be operated. without the vater and .hot steam being lost, which are discharged `from the mixing chamber during the starting period.

The invention lastly relates to the ari sages. .-l change in the dimensions of th passacs will, however,-uutavorabl rangement ot' certain hose connect-ions when i injectors are employed in pairs, by which arrangement the number of necessary hose connections is reduced and the freezing o't the one injector is avoided, when it might, have become defective and only one .of the injectors can be kept Working.

For obtaining,r these objects the present invention vprovides that the insides of the 1 condensation or mixing; nozzle at the point I ot'inlet t'or the water and at both sides of the tiret overflow. and the opposite outsides z o' the suction 'nozzle and the steam nozzle are iliade ot e. cylindrical shape. Also ,the inside oit the suction nozzle at its nari-cwest part and the opposite outside' of the steam nozzle rare if a cylindrical shape. From this `4arrangfeinent it results that at the nari-cwest part of the annular passage :formed between the suction. and the steam nozzles for the suction steam, and at the inlet lor the water at the condensation nozzle and the` boi'elof the. condensation nozzle inoli- ..both sides of the first overdow and of the steam nozzle must he ofabsolutely the same area. lt is extremely diiliciilty to obtain this with the conical nozzles hitherto usually employed as the least. inaccuracy in ao the e 'cicncy of the injector and incre: the loss of water. This explains the frcquently obscrifed tact, that injectors of thc type hitherto used show, according to the c wear of the nozzles, in consequence of the in creasing irregularity ot' the passage'aper turcs at both vsides 'ot the first overflow an increasing,l loss of water. Even itthe no'z zles are accurately made after gages and are properly assembled, it will sometimes happen, that the injcctoi-:inust be readjusted A when tested, which will of course consider ably increase the cost of manufacture.

The object of the present invention is to obriate these existing troubles so as to simplify the repairing of injectors on the one hand, and on the other to reduce their mannfactoring cost, and lastly Vto render them` less sensitive against wear of the nozzles;

A further improvement in the construction of injectors consists according to the present invention in that the steam passagcs,'which form thc communication between the suction nozzle and the steam chamber enter -into the conical seating sur tace of the conc closing the steam nozzle between the scat proper of the conc and the bore ot the steam nozzle, whereas hitherto these passages were arranged at the bottom ot' the cylindrical enlargement of the central nozzle. l'n consequence of the new arrangement much less steam than hitherto will flow into the suction nozzle when the central or steam nozzle is completely opene'd,'fs0 that the sucked up water will be less highly heated than. it istlie case in injectors, the suction steam passages of which are arranged in the.'aforementioned manner.

Preferably `these improvements' in the nozzles according to the present invention are embodied in such apparatus, in which the mixing or -overflow Chalabi-1i"may,` after the injector has been started, be used for an additional conveyance' of Water. For this purles pose the suction chamber and the mixing chamber are preferably made in injectors of this type to communicate with the water tank by means of two tubes reaching into the water, these tubes being either entirely valveless or having valves of such a type that a continuous unobstructed passage from the suction or mixing chamber respectively to those ends of the two tubes which are located toward the water tank can be produced. The tube communicating with the mixing or overflow chamber will hereinafter be termed the supplementary tube, as it is employed to supplement the conveyance of water after the injector has been started. Thissupplementary tube mayiduring the starting period of the injector act as an overflow tube and guide the water, the steam, and the -air emerging trom the overflow chamber into the water tank.

lll/'hen the injector has been started, the' yefciency of the injector is increased by the two tubes sucking up the water, whereby the reliability is increased by no intermediate valves subject to wear being necessary, and whereby finally the loss of water by the mixing valvesis reduced. Such injectors maybe arranged in pairs and for insuring a greater simplicity the pipes leading to the water tank may be joined in pairs as shall be hereinafter described.

In the accompanying drawings Figure 1 is a longitudinal section through the preferred embodiment of the invention, Fig. 2 is a longitudinal section through an injector according to Fig. 1, in which the suction and the mixing chambers communicate by means ot two independent pipes with the water tank, and in which the mixing overflow chamber 1s provided with a mixing or f overflow valve. which may be operated only when the supplementary tube communicating with thc mixing chamber is or has been shutoff. Fig. 3fis an embodiment accord-- ing; to Fig. 2 in which the mixing valve is arranged in a valve chamber laterally projccting'l from the supplcmcntaryv pipe and can be .made to communicate with the mining chamber by means ot a three way cock; Fig. 4t i a plan view ot two injectors,'each of which communicates with its separate suction piilc,'\\f'hcrcas the two supplementary pipes join ftio one common pipe. l `ig.'5 is a plan View of two injectors, the supplemenvtary pipe oii thc one injector being con nectcd with thc suction pipe 'of the other injector.

ln the drawings 1' is the body or cas- ,steam supply, a connection 3 for the water supply, and an overflow or slobberi'ng aperture el, through which the water entering into the mixing chamber 5 can escape. rlhe 'injector has besides, as customary, a mixing or condensation nozzle G, a pressure nozzle 7, a connection piece 3 for the vater delivery pipe, a feed valve 9, a central or steam nozzle 10. and a starting nozzle 11. The condensation nozzle 6 and the pressure or delivery nozzle 7 are as usual connected with each other oii their narrowest part by means of a connection piece 12, which contains overliow openings 13, through which the surplus water can escape.

The condensation nozzle -6 is conically tlared to vard the water chamber 14 and has at its narrowest part the customary overflow openings 15, thrmxgh which the surplus water can pass into the mixing chamber 5 when the injector is started. The two sections 16 and 17 ot the bore of the conciensation nozzle at the two sides of these overtlow openings 15 are of a cylindrical shape; likewise the rear part 18 of the bore leading into the water chamber le is cylindrically shaped.

The suction or starting nozzle 11 is carried by the cylindrical head 19 of the steam nozzle 10. On its outside opposite the inlet 18 for the water of the condensation nozzle it is of a cylindrical shape and has a bore which is conically enlarged toward both sides. The two conical ends of the bore communicate by means or" a cylindrical part 20. rThe outside of the steam .nozzle 10 opposite to this part 20, and theA outside of this steam nozzle 10 opposite to the cylindrical parts 16 and 17 of the bore ot the condensation nozzle are made of-a cylif'uirical shape. lThus considerable independence ot tbe accuracy with which theassembling is carried out is obtained, as the area of the passages iormed4 by the saidparts Jfor the steam and the water rcspectivclv will remain the same even if the assembling should not be so accurately carried out, which is not the case with injectors of the hitherto customary kind, which employ conical nozzlcs only.

The bore 21 ot the steam nozzlel 10 is closed by a conical plug 22 coperat-ing with a conical bore *23 inl the cylindrical part-19 of the steam nozzle. lBehind the scat of the cone 22 are arranged steam passages 24, through which steam can pass from the steam 'chamber 25 into the annular passage foi-mcd by the outside ot' the steam nozzle l() and the bore ot the starting nozzle 1l, when, the cone 22 is lifted. The conc 22 Ais carried by the end of a. rectilincarly guided rod 26 and may inv the embodiments represented in the drawings be forced against or lifted is eoinpieteiy iititei 'irom its sent by Ineens of eiienfi ievei The roei 26 1s passed through e shifting bei: S58 o* enyimown snitehie type..

ii'oif 'mig the ehgiiiy man the @one 22 is :eelv troni ti'oin ii'phie wales: openiiiiligs Li .hen .e'f

eene 2Q ie eteenii. the reine nsiiei, in cone ieeniier enneigement et Se? the efnnniiinieeeiisin'ihe mici tt i "ty inne eeein een to the snee'eii en She. cone iii erhieh ineens the einoni me 'have e detiin'ieimei etteetl on in@ eiiisimellei,1 than it the cieney of the injection ie n netto Chilton; y

pesseges Q4 openeii in the front envi o into the steeni Steam can nw iieiiiy es l; frein the sienne. ehn the steam i sages 224i: however opening into the eoniemi seat of the cone inneh ieee steen will entei' into the einreihig; nomie, ne the steinn supplied, wiii ehieiy pees through the more 2 ot' the steam momie which oli snmiiei iesistenoe than the hoses In the eniholimens .eeeoitlingg to Figs. 2 to 5 two iniienei'iiient pipes filth 30 nie connecten. to the sneu p eenneetmn ii :ini'i the oven ow ei'inneeiien :i et these pipes 29, 50 the former may suction pipe the other the The pipes Q9T 30 muy tion chamber le hy cocks Ble 3Q ene which ie noimniiy Figs. f and Si) in Winch they provide tor fi iliee Comnniniention hetn'een the suetion anti the mixing chainhei iespeetiveiy and the Waiter teni; in, the en'ihotiinient :im-owl ing to 3 the eoelc 232 ot the minnie-A n'entery pipe 50 provided 'tor Pensons given heieinefeeif i h. siile fmsseg'efits so that the pipe 30 shut oi'i :troni the mixing oir overtiow han'ihei: 5 hy ineens o t ii thee wey cock.

iiite. The 'vfiiye 36 is guide loy e guide 39 en@ may desire'oie he under the infinenee e eyeing; which tends to keep it penne` nent/ly pieeseci against its seat. Late-rally ng kein the valve casing i0 is en a thiongh. which, it necessary, water, einem Miei the like may he discharged. me enihoeiin'ien: fieeoi'fiing to Fig. 3 piatte enhetiuuteei for the valve casing eli-ti, ivy nies e which plete access muy he heil to overow chiunher so that this cheminee may he inspected. To the supplei.iii'ie 30 n valve fit-2 is connected s. he the fwny Coeli 32, in which e. waive moves in n guide 441, anni, 'is he against its seatby the :ie-uien e aiming' 116. The valve controls the communication between a passage 47 et the one eifie emi, :in ootiet i8. According; io the position of the Coeli 32 this vulve et the eide is entiiely stint; ofi or it is in eominni sation with the mixing ehmnhei." ,"5 tin'engh the eide passage 35 attter the suppienienteiy pipe B0 hes heen shutol so thatthe veine een he need like an. ordinary slol'ihei'ing viiive.

The opeifzition et the injectors shown in sind 23 is es foliows: Normally the .w .tt-i ie7 in the embodiment according to in its (iepiessecl position, so that the fi ie positively held againsty its seat, :imi the eoeizs 3l sind S2 ni'e in the positions shown in eine. 2 .end 3, in which there exists e eieiii eonnnnnicetion between the suction suction, nine or the mixing pipe respectively, Whie the sioohei'ing vulves :1re Completely tiippeci ont ot' action. in this ense the inieetoi onezites foilmisi: Atthe Commencen escaping tieni the overtlows 15 or 13, the not condensed steam and the like pass thi'ongh the vertical opening 33 in the oook 3525 inni the supplementary pipe 30 into the toi is nt full work, that is when there exists e vneinnn in the mixing chamber, the direction ot the tlow in the supplementary pipe is; eiiniiy reversed, and water will now flow pipe 30 into the mixing chamber 5 and 'thence into the overflows nml the delivery pipe i3. The'supplementary pipe will thus eet es an :intonnitio regulating meinher,

ehinnhei" having4 changed to the vacum" peiioii, \vill :intonmtiezilly eqntroluthe snp; plementiii'y conveyance of water through tie mixing chamber, which.supplementary con titi Bti

einmihei' or the niixingiehmnher and the :we

` nient of the n'oilfi, viz., in starting the Water 105 ei teni( Sii, -Coneeqiiently no slobhering 110 he eontienseti respectively. TWhen the injeema 'troni the teni( 34 through the enpplementery 120 whiehnn the pressure period in the mixing'lz veyeneeie hy itselitE known, but only by' means of mechanically operated valves. If for some reason or other an additional con veyance or" Water through the supplementary pipe cannotI or shall not occur, the supplementary pipe 30 is shut olf from the tank 34 by the cock 32 and the mixing valve 36 or 45 respectively according to Figs? and 3 is turned on. For the purpose the screw 38 is screwed up in the casing Ll() by means ot the handle 3T, so thatthe valve 36 can play freely. ln the emlmdiment according to Fig. 3 the valve is in the above mentioned case adjusted in euch a manner. that the lateral passage 35 comes into alincment with the passage lll", so that the pipe 30 is sluit olf and the valve can act as mixing valve. In this case the injectors shown in Figs. 2 and 3 act as ordinary injectors, and Water is conveyed through the suction pipe Q9 only while the pipe 30 remains'idle and the mixing valves act in the usual manner allowing hot `Water. steam, air and the like to escape when the injector is started While as soon as a vacuum appears in the mixing chamber they will settle down on their seat-s and close the 'mixing chamber against the' outer atmosphere. y

In Fig. t is shown a plan view of two injectors, which are to be employed simultaneously, say on a locomotive or the like. These injectors have the nozzles constructed as shown and described with regard to Fig. l, and the special constructional form according to Fig. 2. Oi? course also injectors accoi-ding to Fig. 3 or injectors in which no safety overflow valvey aty all is provided may be used. The two supplementary pipes 30 are joined to one common pipe 49, while the pipes 29 are left separate, so that only three hosel connections lead from the tivo injectors to the water tank.

In the embodiment according to Fig. 5 the suction pipe 29 of the one injector commu- .nicates with the supplementary pipe 30 of the other injector, so that both injectors communicate by two pipes 50 only with the water tank. In consequence of these hose connections the number of hose between the locomotive and the tender can be considerably reduced. Besides the hose connection according to Fig. 5 avoids that the one injector can freeze, in case for some reason or.

the other only one injector is working and the two do not alternate. For it' 'the one injector is started, the hotI surplus Waterfp will 'flow from the mixing chamber of the one injector through its supplementary pipe into the Water pipe of the other injector and heat the latter so that its hose cannot freeze. It' the other, say the left, injector is already working, it will suck the water through both its pipes, that is from its lett pipe and the pipe of the injector on the right. It the injectors have not such a pipe connection, the aforedescribed movement of the water is Leccese idle injector mayA become choked, both injectors will stop.

Working. It' iu this case thel defective sup-i plementary pipe iscut otf from the injector on the right, and the mixing valve isturned' on. the injector on the right:- will Work like an ordinary injector, independently of the other injector on the lefti The necessity of employing the mixing valves will also be observed, if with' the pipe connections according to Fig. 5 'the one inj jector, say the right one is to be started, While the other, th'evleft; one is already Working. In this case thehot water, which esl flows through the right supplementary pipe.

into the lett suction pipe may cause the left mjector to refuse.

nly necessary to shut ot the supplementary pipe of the right injector on starting theylatter and to turn on the mixing Valve. After starting, when the right injector is fully at Work, the supplementary vipe can be turned on agaith,` whereupon oth injectors will continue lWorking uninterruptedly. i i

What I claim is:

1. In an injector, a casing, a steam inlet, 4a Water inlet, an overflow chamber, an overflow outlet and a. Water outlet in the said casing, a pressure nozzje located within the said overflow chamber and adapted to communicate with the said Water out-let. a mixing nozzle communicating with' the Suid water inlet and connected to the said pressure nozzle, overflow apertures between the mixing nozzle and the pressure nozzle,l a steam nozzle, having a cylindrical end portion, adapted to communicate with the steam inlet and projecting into the`said mixing nozzle, and means for controlling the admission of steam from the said steam chamber to the sai-d steam nozzle, said mixing nozzle haring arcylindrical bore opposite to the said cylindrical portion of the said steam nozzle.

2. In an injector, a casing, a steam inlet, a water inlet, an overflow chamber, an over 'flow outlet and a Water outletin thesaid casing, a pressure nozzle located Within the said overflow chamber and adapted to communicate with the-said Water outlet, a. mixing nozzle, being provided with a cylindr--- cal bore at its inlet end, communicating with the said Water inlet and connected to F orravoiding this it the said pressure nozzle, overflow apertures between the mixing nozzle` and the pressure nozzle, a steam nozzle adaptedfto communi` cate with the said steam inlet and projecting nozzle, having a cylindrical outside on its end adjacent to the said mixing nozzle,

lit

lflow outlet and a Water surrounding the said steam nozzle, and adapted to communicate with the said steam inlet, and means for controlling the admission of steam to the said steam nozzle and to the said starting nozzle,

3. In an injector, a casing,a steam inlet, a Water inlet, an overflow chamber, an overoutlet in the said casing, a pressure nozzle, located withinthe said overflow chamber and adapted ,to communicate with the said Water outlet, a mining nozzle communicating with the said water inlet and connected to the said pressure nozzle, overflow apertures between the mixing nozzle and the pressurel nozzle, a steam nozzle adapted to communicate with the said steam inlet, projecting into the said mixing nozzle and having a cylindrical outside on that end projecting into the bore of the said mixing nozzle, said mixing nozzle haring a cylindrical here at the inletenel and on that part surrounding the cylindrical part ot the said steam. nozzle, a starting nozzle, having a cylindrical outside on its end adjacent to the said mining nozzle, surrounding the said steam nozzle and adapted hy 'he cylindrical part oit the bore of the to communicate with the said steam inlet, and means tor controlling the admission of steam from the said steam chamber to the said starting vnozzle and to the said steam nozzle.

4,111 an injector, a casing, a steam inlet, a water inlet, an overtiovv chamber, an overow outlet and a Water outlet in the said casing, a pressure nozzle located Within the said overflow chamber and adapted to communicate with the said Water outlet,a mixing nozzle, having a cylindrical here at its -inlet end, communicating' with the said Water inletand connected to the said pressure nozzle, overllow apertures between the said mixing nozzle and the said pressure nozzle, a steam nozzle adapted to communicate with the said steam inlet and projecting into the said mixing nozzle, a starting nozzle surrounding the said steam nozzle, and having a cylindrical outside on that end adjacent to the said mining nozzle and a partially cylindrical bore, and adapted to communicate with the said steam inlet, the

Isaid, steam nozzle being provided with a cylindrical outside on that part surrounded said4 starting nozzle, and mean' for con-- trolling the admission of steana rom the said' steam chamber to the said starting nozzle and to the said steam nozzle.

5. In an injector, a casing, a steam inlet, a water inlet, an overflow chamber, an overi flow outlet and a' Water outlet in the said casing, a pressure nozzle located Within the said overflow chamber and adapted to, coin- -said mixing nozzle and the said pressure nozzle, a steam nozzle, adapted to communicate with the said steam inlet, projecting into the said mining,r nozzle and lia-ving a cylindrical outside between its ends and on that end projecting into the mixing nozzle, the` said mixing nozzle having a cylindrical bore on that part surrounding the cylindrical outside of the said steamnozzle, a starting nozzle surrounding the said steam nozzle, adapted to communicate with the said steam inlet and havinga cylindrical outside on the end adjacent .to the inlet end of the said mixing nozzle, and a partially cylindrical here around the' cylindrical middle-portion of the said steam nozzle, and means for controllingr the admission of steam from the said steam chamber to the said starting nozzle andto the said steam nozzle.

6. ln an injector a casing, a steam inlet, a water inlet, an overflow chamber, an overflow outlet and a Water outlet in the said casing', a pressure nozzle, located Within the said overllow chamber and adapted in communicate with the said water outlet, a mixing nozzle, communicating with the said Water inlet and connected with the said pressure nozzle, overflow apertures between the said mining nozzle and Athe said 1pressure nozzle, a steam nozzle adapted to coinmunieate with the said steam. inlet and projecting into the said. mixing nozzle, a, head carrying the said steam nozzle, a starting nozzle carried hy the said head and surroundin the said steam nozzle, controlling* means or the admission of steam to the said steam nozzle and to the said starting nozzle comprising a cone controlling the admission of steam to the said starting nozzle., and a stud adapted to enter the here ot the said steam nozzle and controlling the admission o'li steam to the said steam nozzle and steam passages in the said head. he tween the bore of the said starting nozzle and the said steam nozzle, and having their entrance opening loe-hind the cone and in front of the stud controlled part oi' the bore of the said steam nozzle.

7. In an injector a casing, a steam inlet,

.a Water inlet, an overflow chamber, an overlloiv outlet and a water outlet in the said casing, a pressure nozzle located within the said overflow chamber and adapted to communicate with the said water outlet, a mixing nozzle communicating With the said Water inlet and connected to the said pres sure nozzle, overtlouv apertures between the said mixing nozzle and the said pressure nozzle, a steam nozzle adapted to c on'imuniico,

cate with the said steam` inlet and projecting into the saidmixing nozzle, means for controlling the admission of steamy to the said steam nozzle, a suction pipe connecting' the water inlet to a 'water tank, a supplementary pipe, connect-ing the Water tank to the overflow' chamber and adapted to convey hot water or uncondensed steam to the Water tank during the starting period and to convey water through the said overflow chamber and the said overflow apertures to the said pressure nozzle after the injector having been started, manually-operated means for throwing the said supplenientarj7 pipe into or out of action and an overflow L valve adapted to be thrown into or out of action.

S. ln an injector a casing, a steam inlet, a Water inlet, an overflow chamber, an overflow outletand a. water outlet in the said casing, a pressure nozzle located Within the said overflow chamber and adapted to comw niunicate with the said Water outlet, a mixing nozzle conm'ninicating with the said water inlet, means connecting the said pressure nozzle to the said mixing nozzle, overliow apertures in the said connecting means connecting the said mixing nozzle and the said pressure nozzle to the said overflow chamber, means for controlling the admission of steam from the said steam chamber to the said steam nozzle, a Water tube connected to the. said water inlet and adapted to convey water from a tank through the said water inlet, the said mixing nozzleand the said pressure nozzle to the said Water outlet, a'supplementary tube connected to the said overflow chamber and adapted to discharge water from the overflow chamber to the said water tank during the starting period of the injector and to conveyv water trom the Water tank through the said over,-

I How apertures and the said connectingmeans to the said pressure nozzle after the injector having been started, a valve casing adapted `tors to the said Water tank, supplementary tubes connecting the said Water tank to the overflow chamber of the tivo injectors, the supplementary tube of the one injector being connected to the supplementary tube of the other injectorsubstantially as and for the purpose described.

10. ln an injector arrangement two in jectors, each injector provided With an over iiovv chamber, an overflow valve and means -for throwing the overlow valve into and out vof action, a -Water tank, Watery tubes connecting the Water inlet of both injectors to the said water tank, supplementary tubes connecting the said Water tank to .the overflow chamber of the tWo injectors, the Water tube of either injector being connected to the supplementary tube of the otherA injector substantially as and for the purpose described.

ln testimony whereof Vl affix my signature ijn presence Of two Witnesses.

JUHANN BASCHKIN.

v Witnesses:

RiPLuY WILSON, CHRISTIAN IRFURT.

xiv.

Images