Improvement in combined injectors, feed-water heaters, and condensers
US 123264 A
Description (OCR text may contain errors)
2 Sheevts--Sheet 1.
E. KORTlN Q improvement in Combined Injector Feed Waer Heater E. KORTIM.
Improvement in Combinedl Injector Feed Water Heater and Condens-ers.
No. 123,264. PatentedJamaoAaz.,
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Uurrnn ame N ERNST KORTING, OF VIENNA, AUSTRIA.
Specilication forming part of Letters Iatent No. 123,264, dated January 30, 1872.
To all whom it muy concern:
Be it known that I, ERNST KORTING, of Vienna, in the Empire of Austria, have invented certain Improveinei'lts in Combined Injector, Feed-Vater Heater, and Condenser, of which the following is a specification, reference being had to the accompanying drawing.
My invention relates to water-injectors for feeding steam-boilers; and consists in so constructing the injector and connecting' it with the engine that the exhaust steam from the latter is brought in contact with the water-jet of the injector, whereby the exhaust steam is condensed and the feed water heated; and the invention further consists in a novel manner of constructing certain portions of the in jeetor, by which it is caused to operate more perfect-ly, and also enabled to start quickly. My improvements can be applied to all forms and styles of injectors with but little alteration in their construction.
Figures l to 7, inclusive, represent sections of diiferent styles of injectors having my improvements embodied.
Fig. l represents an injector with xed nozzles; A representing the steam -nozzle, fed from the pipe A connecting with the boiler; C, the. condensing-nozzle; D, the pressurecone, E, the water-supply pipe; F, the overflow-pipe; and Gr, the pipe which I apply for bri n gin g the exhaust steam from the engine into the injector. This pipe enters and admits steam into the annular space T around the outside of the nozzles C D, so that the steam can ilow through the overilow-openings e and come in contact with the jet of water.
The operation of the injector is as follows: Steam, being admitted through pipe A', blows out through nozzleAand through nozzles C D, and draws the feed w at er in around nozzle A and forces it through into the boiler in the usual manner. As soon after starting as the injector operates properly-that is, without waste at the overflowan inward draught or suction is produced through the overtlow-openings c, and thus a vacuum produced in the surrounding chamber T, so that the exhaust steam is dra-wn in through the overflow-openin gs e and comes in contact with the water-j et, which condenses the steam and carries it forward into the boiler.
A check-valve, s, is placed in the overiiowpipe F, opening from the injector, to prevent air from entering' and coming in contact with the exhaust steam, and a check-valve, t, opening toward the injector, is placed in the exhaust-steam pipe G to prevent water from entering the same when starting the injector. lNhile in the injector thus arranged the exhaust steam is utilized for heating the feed water, no improvement is ei'ected in starting the injector.
The advantages gained, as regards the utilization of the exhaust steam, are not considerable, owing to the imperfect vacuum formed in chamber T and the small surface of the jet, which is brought in contact with the exhaust steam; but the arrangement recommends itself on account ofthe facility with which it may be adapted to the ordinary injectors in use, it being merely necessary to apply a checkvabe to the overilow-pipe and to connect the pipe between the injector and the engine.
Fig. 2 represents an injector with iixed nozzles, similar in construction to the one above described, except that an additional nozzle, H, is inserted between the condensing-nozzle C and the pressure-cone D, so as to leave au annular space or opening, a, for the entrance of the exhaust steam to the water-jet. The injector thus arranged isstarted in the usual way, and, as soon as it works properly, a strong inward suction will be produced at the opening c and the exhaust steam from pipe G will ow in through said opening and come in contact with the water-jet, which will condense the steam and carry it into the boiler, as in the previous case. A division or diaphragm, c, is also placed in this injector around the condensing-nozzle C, as shown, 'so as to cut o communication between the exhaust steam and the overiow-openings e, and thus obviate the necessity for a check-valve in the overflowpipe, as was described in the previous instance. Instead of the single nozzle H, two or more of them-may be used so as to obtain alarge contact surface between the exhaust steam and the water-jet.
-An injector of this construction possesses the advantages of a strong suction for drawing the exhaust steam inward into contact with the water, and of a large surface ot' water to act upon the exhaust steam, whereby a very considerable portion ofthe steam is condensed.
Fig. 3 represents an injector constructed in r @raten a manner very similar to the one shown in Fig. 2, the principal difference being that the division c is removed, so that the exhaust stea-m comes in contact with the water-jet, both at the annular space a and at the overflow-openings c. A represents the steam-nozzle; C, the. condensing-cone or nozzle; D, the pressure cone; E, the feed-water supply-pipe; F, the overliow-pipe; G, the exhaust-steam supply pipe; and H, the extra nozzle for bringing the exhaust steam in contact with the water-jet. I is an extra nozzle, placed in the injector, but relating in no way to my improvements. In this injector the steam, entering the space T, comes in contact with the water-jet at the overiiow-openings c, and also at the annular space a.. Y The inner end of the condensingnozzle (l I make of greater internal diameter than the steam-nozzle A, so that there is no tendency otl nozzle C to choke or till up with steam when starting the injector. The-wastepipe F is also left open or with a valve opening outward, so that, when starting the injector, the steam, instead ot lling the interior and preventing the steam-jet from drawing the water forward, can escape through the overtlow-openings e and the space a, and pass out through pipe F into the atmosphere. Under this arrangement there is no pressure formed in the nozzle to prevent the action ofthe steamjet. and consequently the injector will draw water immediately upon being started.
This construction of the injector gives the advantage ot' quickness in starting and certainty ot' action; but, having two openings through which the steam is brought in contact with the water-jet, only a slight inward suction is produced, and consequently the condensation of exhaust steam is not as great as in the form shown in Fig. 2.
Fig'. 4 represents an injector with a movable condensing-nozzle and pressure-cone. A is the steam-nozzle; C, the condensing-cone; D, the pressure-cone; E, the water-supply pipe;
F, the overflow-pipe; G, the exhauststeanr suljiply-pipe; and K, the exhaust-steam nozzle. In this instance, the exhaust steam is carried into the condensing-nozzle C through a central nozzle, K, which passes in through the center ofthe steam-nozzle A, the exhaust steam being thus discharged into the center ot' the water-jet. The nozzle or tube K may be fixed or movable by any suitable means, in which latter case it also serves for regulat` ing the steam in the sa-memanncr as the spindle of the Giliard injector, shown in Fig. 6. The steam from the exhaust-steam pipe G en.- ters the nozzle K through holes or perforations t made in its back portion, as shown in the drawing. The nozzles thus arranged enable the injector to draw water immediately upon being started.
The purposes of the nozzles may be reversed and steam passed through K while water is drawn through A. This injector is started in the ordinary manner. The steam, blowing Ythrough the nozzle A past the nozzle K, causes a strong draught or suction inward. through the latter, and the exhaust steam, entering through `itsla-rge end, with a series of holes or perforations, j', andthe exhaust-steam pipe is arranged to discharge into the space Il around said cone, so that the exhaust steam comes in contact with the water-jet, both at the overtlow and by passing in through the holes j'. The operation and the advantages ot' this form of device are the same as in the form represented in Fig. 4.
Fig. 6 represents the common Giliard injector with my improvements applied. A is the steam-nozzle; U, the condensing-cone or nozzle 5 D, the pressure-cone; E,watersupply pipe; F, the overliow-pipe; G, the exhaust steam supply-pipe; N, the waste-pipe for the excess oi'exhaust steam 5 andff, holes through which the exhaust steam enters the condensing-cone. rIhe annular space T outside ot' the condensing-cone and the overliow-openings both communicate with the external atmospherel through the pipes N and F, so that when the injector is being started the steam, instead of obstructing the nozzle U, can pass out therefrom and escape into the air, so as to leave the nozzle (l clear and permit the injector to draw water at once. As soon as the injector is t'airl y in operation the overiiow of water and the waste ot' steam ceases, and astron g inward suction is produced through the overflow-openings e andthe holes j', and the exhaust steam thereby drawn inward into Contact with the jet, which condenses the steam and carries it forward into the boiler.
Fig. 7 an injector with fixed nozzles arranged to draw the water immediately upon being started. A is the steam-nozzle; U, the condensing-cone, D, the pressure-cone; E, the water-supply pipe 5 F, the overflow-pipe; G, the exhaust-steam pipe; H, the nozzle through which the exhaust steam is brought in contact with the water-jet; E, the water-supply pipe; F, the overiiow-pipe; G, the supply-pipe for exhaust steam, and N, the waste-pipe for the surplus ot' exhaust steam, and which also serves as an overflow-pipe when starting.
The operation of this injector, when starting and while in operation, is the same as the one shown in Fie'. 3-viz., the steam, entering through nozzle A, escapes freely at both ends of nozzle C and passes out into the air, so that a suction is at once produced and thewater drawn forward. When the injector first commences to operate Water will overflow and escape through the overflow-pipe F, and also through the pipe N; but as soon as it Works properly the overflow will cease, and a strong inward suction will be produced at the outer end ot nozzle C, and the exhaust steam will be drawn inward with the jet and condensed thereby and carried along into the boiler.
W'here quickness in starting is one ot' the principal objects sought, and when it is not desirable to make the nozzles of di'erent diameters, as in' Fig. 2, the construction shown in Fig. 7 is recommended.
All ot' the constructions above described majr be combined in other forms and applied to other injectors. It is best in every case to it a valve in the exhaust-steam pipe to be closed When the en gine is not ruiming. There it is no object to utilize the exhaust steam the pipes G may be removed, and still the injector will possess the advantage ot' starting or com` niencing operation very quickly.
Although the various injectors shown a-nd described vary in construction, still in each case the exhaust steam is brought in convtact with the feed Water, and thereby the feed Water heated and the steam condensed. In the forms shown in Fi gs. 3, 5, and 6, where a free communication is left between the interior ot' the condensing-nozzle and the atmosphere, great readiness or quickness in starting is attained, the readiness being increased when the condensing-cone is made larger inside than the steam-nozzle, as before mentioned.
By means of my improvement the exhaust steam of steam-engines can be utilized for hea-ting the feed Water for the boiler, thereby obviating the necessity tor any other heater, and in addition the injector is caused to operate with great er certainty, and is enabled to commence dra-wing water instantljr and without changing the area of the steam-nozzle, as has heretofore been necessary.
Having described my invention, what I claim l. In combination With an injector constructed substantially as described, I claim the check-valve t, arranged in the steam-pipe G, as a-nd for the purpose set t'orth. T312. I also claim the check-valve s, located in the overflow-pipe F, as described, to prevent the admission ot' air when starting the injector, as set forth.
3. The central nozzle K, Whether fixed or movable, arranged to deliver the exhaust steam in the center of the stream ot' Water in the condensing-nozzle, substantially as de scribed.
ERNST KORTING. Witnesses:
JOHN P. SCOTT, C. DoNHon.