US182225A - Improvement in injectors - Google Patents

Description

2 Sheets-Sheetl.

J. P'ROEGER. INJECITOR;

Patented. Sept. 12, 1876.

MITNESBEi INVENTUL 1.1a 46M V A4 M ma N.PETERS. PNOTO-UTHOGRAFHER. WASHINGTON. D C.

UNITED STATES PATENT OFFICE.

JULIUS PROEGER, OF PITTSBURG, PENNSYLVANIA.

IMPRCVEMENT IN INJECTORS.

Specification forming part of Letters Patent No. 182.225, dated September 12,1876; application filed August 7, 1876.

To all whom 'it may concern.-

Be it known that I, JULIUs PROEGER, of

Pittsburg, in the county of Allegheny and being bad to the accompanying drawing, form- 1ng part of this specification, in which Figure l is a longitudinal section of an injector embodying my improvements. Fig. 2 is an elevation, partly in section, showing the steam-port of the overflow. Fig. 3 is atransverse section on the line a m, Fig. 2. Fig. 4 is a similar section on the line y y, Fig. 2. Fig. 5 is a transverse section on the line 2 2. Fig. 6 is a detached view of the valve located on the feed-water-return pipe. tached elevation of the guide-plate of the jet and combining tubes.

Like letters refer to like parts wherever they occur. 7

My invention relates to the construction and operation of injectors for raising and feeding water to steam-boilers, andfor like purposes; and consists, first, in combining with a single head, two receiving, combining, and

delivery tubes, of difl'erent capacities, so that the feed may be varied at pleasure without breaking the jet or otherwise deranging the action of the injector; secondly,in combining with an injector-head, having two receiving tubes or jets of different capacity, a valvechamber provided with two delivery-ports, and two valves for guarding the same, whereby either receiving-tube may be employed at the will of the operator; thirdly, in perforatingthe combining-tube so as ,to insure an additional supply of water to, and the regular working of, the jet; fourthly, in forming the steam-port of the overflow in one with the head or main casting; fifthly, in the interposi tion of automatic valves between the combincifically set forth.

I will now proceed to describe my invention Fig. 7- is a de-.

so that others skilled in the art to which it ap pertains may apply the same.

A indicates the injector-head or main castin one with the casting, continuingit through the same, so as to connect with the valvechamber B; and I also form the feed-water:

return passage a in like manner, except as to connecting it with the valve-chamber, thus avoiding a series of independent pipes liable -to become injured, andobtaining a compact head, A. c (1 represent tw(steam-jets or receiving-tubes) secured in .the head 12 of the valve-chamber, and projecting through a guideplate or disk,b, likewise secured to head b.-

This guide-plate]; serves to center the jets or receiving-tubes 0 d with their respective combining-tubes, when the several parts of the injector are being put together. The steamjets or receiving-tubes are of different sizes, the proportionate size being regulated by the variation in work required, and each is provided with its corresponding combining-tube and delivery-tube c c and (1 d".

The forward end of the steam-jet is rounded or convex, asshown at i, and the receiving end or mouth of the combining-tube is formed with a reverse convexity or curve, so that when the jet and combining-tube are in position the Water-way is constricted only at one point, and widens both ways therefrom. This construction reduces the friction and enables the combining-tube to take water more easily. The delivery-tubes d d are preferably formed in a single casting, as shown, with two heads, d? d, one of which, at, is flanged to seat upon a shoulder, d formed in the head or main casting A, and the other, at, threaded to engage with a threaded sleeve or nut, d, by which the casting is drawn up to'shoulder d" and held in position. The combining-tubes c d which are arranged in the water-chamber G, and, as before specified, correspond in size to their respective nozzles, are perforatedat one or more points, 6 e forward of the jet, so that, should the combining-tube fail from any cause to take suflicient water at the mouth,

2 reggae an additional supply will enter through the perforations, and insure the perfect action of the injector. Tubes 0 d are threaded at their extremities, as shown at 6 and are secured in position by screwing into the head d In the head vii-and between the extremities of the combining-tubes c d, is a small passage leading to the overflow and guarded by a flap or other automatic valve, f, so arranged that it is seated by pressure upon either side. This valve serves to close the connection between the idle connecting-tube and the overflow, and

between the two combining-tubes. In order to close the idle delivery-tube, valves f f ,-having a similar function, are attached to the head (1 and may be the usualflap, or, preferably, a sliding conical sleeve-valve, with a guide-pin, as shown in the drawing. D is the overflow-nozzle, provided with the usual checkvalve d controlled by a suitable spring. Within this nozzle is arranged the annular steamnozzle or jet D, which receives steam from the valve chest or chamberB through port a The nozzle D is provided with the ordinary steam-plug, by means of which the steam to the nozzle may be cut off at pleasure.

Erepresents the chamber of the valve which controls the feed-water-return pipe. Said chamber is divided by a slotted diaphragm, g,

below which is the orifice of the return-pipe and above which the valve-chamber connects with the feed-water-discharge pipe. This diaphragm 9 forms the seat of a valve or gate, 91, similarly slotted and provided with a stem upon which is a loose sleeve, 9 between which and valve 9 is a coiled spring that forces the upper flange of the sleeve against the cap of the valve box or chamber, and forms an effective packing.

In order to control the supply of steam to the two steam-jets or receiving-tubes c d, and to the steam-jet of the overflow-nozzle D, a series of valves are required, which I shall next describe. The steam-chestor valve-chamberB is providedwith a single steam-inlet, B, and is divided by a series of partitions, b b b b, through which are openings ground or otherwise finished to form seats for a series of valves, m m m, arranged upon a common stem, M.

The upper valve m may be formed on the stem; but the middle valve m is usually slipped loosely upon the stem and held up by valve 1% 0E its seat'without jamming the lower valve. k Theupper valve m has two seats and controls the port a leading from the steam-chest or receiving-tubes.

or valve-chamber to the overflow-nozzle D. The middle valve m controls port 0,- which conducts the steam to the larger jet or receiving-tube 0, while the lowervalve controls the port 1', which supplies the smallerjet d.

I have shown and described, in connection with the above, an overflow-nozzle located in the usual position, and operated in the usual manner but before proceedingto describe the operation of my devices, I wish to describe a preferred arrangement of the overflow-nozzie, which is illustrated in Fig. 3 of the drawin g. P indicates said overflow-nozzle, provided with the annular steam-jet and plug, as usual. This I attach to the side of valve-box B, and take steam directly from the valve chest or box through a port, 1). I close the connection of port a 'with the valve-chest B, and connect said port directly with the overflow-nozzle P, as at p The usual check-valve may retain its former position, ormay be at tached to nozzle P. The advantages derived from this change of location are that the operator has it continually under his control and in sight, can manipulate it readily in starting the injector, and can always detect any defect in the action of the injector.

' The operation of my devices is as follows:

Steam having been admitted toyaIve-chamber B, the stem M is manipulated so as to throw valve m off of its seats and permit the steam to pass through port a to the steam-jet of the overflow -nozzle D, thus creating a vacuum in the injector, and lifting the water into chamber O. As soon as this is accomplished the stern M is further manipulated to open one of the ports-leading to the steam-jets If a large supply of feedwater is required the stem M is turned down so that the collar thereon forces valve m down off its seat, at the same time closing port a and the steam passes through port o to the jet 0, following the expansions and contractions of the jet, and forces the water through combining-tube c and delivery-tube 0 into the feed-water-pipe. Owing to the form of the mouth of the combining-tube and the jet (both of which are clearly shown in the drawing, and are deemed important) the friction of both steam and water currents will be reduced to the minimum, thus facilitating the establishing and maintenance of a full stream of water; but if from any cause a deficient supply of water enters the receiving end of p the combining-tube, any derangement in the action of the injector will be corrected by the additional supply of water entering through perforations c of the combining-tube.

The pressure of the water passing through the combining-tube 0 will force the automatic valve f over against its seat upon the smaller combining-tubes, and thus close the connection between the combining-tubes without disturbing the direct communication with the overflow-nozzle. The pressure, acting in a similar manner upon valve f will close the end of the idle delivery-tube d to sustain the 'qolumn of water in the injector during the changing of the valves. By con-.

tinuing to raise the stem M the valve m is al.- lowed to seat .itself, closing port 0, and the valve m is lifted off its seat, unclosing port 4",

and admitting a supply of steam to the steamjet or receivingtube d.- By the time valve m is fully open, valve m will have closed port a by coming in contact with its upper seat. The further action of the injector (or tubes d (1 (Z is the same as that specified above for the larger series ca 0 and need not, therefore, be

repeated. When it is necessary to use avolume of the supply-water intermediate to the supply of the two jets, &c., the larger series 00 0 are used, and the valve 9 or gate of chamber E is turned so as to open so much of the slot in diaphragm g as will permit the escape of the surplus water by the return feedwater passage a, from which it is returned to the tender or other source of supply. I

Where the overflow-nozzle is attached to and takes steam direct from chest B the operation will be as follows: When the steam causes a vacuum in the injector the water will fiow from the injector through port a of the main casting, which port is then simply a waste-water tube.

Among the advantages of my improvement are that the volume of feed-water may be varied through a great range, without interfering with the perfect action of the injector, and any irregularity in the action of the injector can be quickly detected and remedied.

Having thus described my invention, what I claim, and desire to secure by Letters Patcut, is-

1. An injector provided with two jets or specified.

receiving-tubes and two combining and delivery tubes, substantially as and for the purpose specified.

2. The combination, in an injector, oftwo jets or receiving-tubes with a valve-chamber having suitable ports andtwo valves for controlling the admission of steam to the jets, substantially as specified.

'3. In an injector, the combination of the two jets or receiving-tubes and the overflowsteamv jet, with the three valves arranged upon a common stem, and suitable valve-seats and ports, substantially as and for the purpose specified.

4.. In an injector, the combination of the independent guide plate or disk I) with the jet or receiving-tube and the combining-tube, substantially as and for the purpose specified.

5. The perforated combining-tube, substantially as and for the purpose specified.

6. The combination of the automatic valve with the two combining-tubes and the overflow-port, substantially as and for the purpose 7. In an injector, the combination of the automatic valves ff f with the delivery-tubes, substantially as and for the purpose specified.

8. In an injector, the case or casting, having the port of a formed therein, substantially as and for the purpose specified.

9. The combination of'the jet or receivingtube, having the rounded or convex nose, with the combining-tube, having the convex lip, substantially as and for the purpose set forth.

10. In combination with an injector the overflow-nozzle, arranged upon the valve-chest, and taking its steam directly therefrom, substantially as and for the purpose specified.

In testimony whereof I, the said JULIUS PROEGER, have hereunto set my hand.

JULIUS PROEIGER- Witnesses:

JAMES I. KAY, F. W. RITTEn, Jr.

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