US332002A - Injector - Google Patents

Description

(Model.) 2 Sheets-Sheet 1.

J. REIGHMANN.

INJBGTOR.

atented Deo; 8, 1885.

\ llml O M llfnrumm NR E um Alun il- (Model.) 2 Sheets-Sheet 2.

A J. RBICHMANN.

INJBCTOR.

Patented Deo. 8, 1885.

PATENT Erica,

JOSEPH REICHMANN, OF CHICAGO, ILLINOIS.

INJECTOR.

SPECIFICATON forming part of l.llietters Patent No. 332,002, dated December 8, 1885.

Application filed March 18, 18H5. Serial No. 159,272.

To aZZ whom t may concern: Y

Beit known that 1, J osnPH REICHMANN, a citizen of the United States, residing at Ohicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Injectors for Steam-Boilers; and I hereby declare the following to be a full, clear, and exact description ofthe same.

My present invention,which is in the nature of an improvement upon a device for a similar purpose, for which Letters Ilaten't of the United States No. 301,004.1 weregranted to me June 24, 1884, relates particularly to the construction and operation of the delivery-tube and parts immediately connected therewith, and-to a simplified and compact construction of the ejector portion. rlhe present device belongs to the class of self-adjusting injectors in which the general object of the feature of adjustability in the mechanism is to enable the operation of raising the feed-water to be effected equally well with any variation in the steampressure by a limited longitudinal movement of the combining-tube, whereby the capacity of the closed overflow-chamber is increased or diminished, according to whether the steam opera-ting to create the vacuum for the purpose of drawing the water produces too large or too small a supply for the capacity of the device.

It is the object of my present improvement to provide an injector which will not only be adjustable in the manner above set forth, but which will operate to raise the feed-water from great depths without having its efficiency varied either by a variation in the steam-pressure or in the level or temperature of the feedwater. To accomplish this purpose, both the combining and delivery tubes must be permitted to move in a longitudinal direction sufficiently far to produce union with the steam-jet of the feed-water which surrounds it, for which purpose such feed-water requires a space proportionate to its gravity and temperature. Of course, if the device is used, as

it may be, not only for raising the feed-Water previous to injecting it, but to operate below the feed-water level, the space between the receiving and combining tubes need be only short to effect the union of the feed-Water With the forcing steam-jet, owing to the absence, to

(Model.)

a great extent, of the necessity for overcoming the gravity of the feed-Water, in which operation atmospheric pressure materially assists; but, naturally, where the device has to raise the water from a depth before injecting it, a greater space is required, owing to the gravity to be overcome and to the reduction in degree of the force of atmospheric pressure. In the latter case, therefore,with an equal steampressurc, the space between the receiving and combining tubes must greater than in the former.

It is a further object of my construction to prevent the counter-pressure from the boiler from effecting the efficacy of the deliverytube, which would tend to cause leakage; and it is also my object to avoid by my particular construction the wear upon the delivery-tube incident to other constructions wherein the combining-tube rests upon and is supported by the movable delivery-tube.

To accomplish the foregoing purposes, my invention consists in constructing the adjustable combining-tube to carry the movable delivery-tube,and to be supported independently of the delivery-tube.

My invention further consists in constructing the movable delivery-tube internally and externally of cylindrical form; and my invention still further consists in certain details of construction and combinations of parts, all as hereinafter particularly set forth.

Referring to the drawings, Figure l is a longitudinal section of the injector portion of the device, taken on theline 1 1 of Figs. 3 and 4; Fig. 2, a similar view ofthe ejector portion, taken on the line 2 2 of Figs.l 3 and 4, Fig. 3, a transverse vertical section of the injector and ejector, taken on the lines 3 3 of Figs. 1 and 2, and Fig. 4:, a similar view taken on th linesfi 4 of Figs. 1 and 2. A

A A', Figs. 1, 3, and 4, is the casing of the injector G. To the part A of the casing the receiving-tube t is secured, as also a stuffing- 9 5 IOO and having, toward its rear end, a collar, m, and a backward-projecting cylindrical bearing, m', which enters a seat in the forward part ofthe combining-tube,which is thus made to carry the delivery-tube. A cylindrical extension, Z, provided with an internally-screwthreaded head, k, having an internal chamber, Z', is secured upon the forward extremity of the combining-tube p, and holds the deliverytube in place by the pressure of the shoulder against the collar m. The extension Zprojects beyond the delivery-tube,thus forming a guard and also a guide in adj nsting the deliv ery-tube into the tube n, which is connected with the casing A toward its forward extremity, as shown in Fig. 1, and leads to the boiler-pressure chamber, and the diameter of which permits it to enter the extension Z and slide between the external surface of the deliverytube o and the internal surface ofthe extension. The overflow-valve h and check-valve Z' are secured to the part A of the casing in the usual manner. rlhe rear end of the combiningtube p serves as a piston, forming a partition between the feed-water and closed overflowchamberB,and supported within the cylinder B,in which the part p may reciprocate, carrying with it its extension Z and the inclosed delivery-tube o between the confines x x. An opening, g, is provided in the extension Z to afford communication between the overiiowchamber B and the interior of the extension, and the enlarged part of the latter, by means of which it is attached to the part p, is constructed to provide a passage, j', between the combining and delivery tubes,which serves as an. overflow and communicates with the overflow-chamber. The delivery-tube 0 moves freely with the reciprocal movement of t-he combining-tube, which supports and incases it,within the guide-tube a, connected with the part A of the casing, to cause it to be in line with the combining-tube and receiving-tube t. The casing of the ejector C is not formed sepa rately from that of the injector portion of the device, but is cast Ywith it and provided with the steam-chamber c, having the steam-port d, and with the vacuum-chamber c, having the watercommunication b. It contains a steamvalve, D, steam tube or nozzle E, discharging-tube F, and check-valve a, the construction, except as to the fact of the ejector being cast as a whole with the injector, and the operation being the same as described in my aforesaid patent.

The operation of the device is as follows: The overow-valve h being first opened and the plug q nearly closed, steam is introduced into the chamber in the casing A, whence a small jet will pass through the overflow and prevent the entrance of air into the watersupply and vacuum chamber of the injector and ejector. The steam-valve D of the ejector portion is then opened, admitting ajet of steam into the discharge-tube F, whereby the air contained in the chamber c is exhausted. producing a vacuum therein and causing the check- `valve a to rise by the pressure underneath, and thus exhausting the air from the injector portion and pipe leading to the reservoir through the chambers A2 b @and the dischargetube F. At the simultaneous appearance of water at the overflow and the discharge-tube F the operation of the ejector is stopped by closing the valve D, and the plug q is opened to admit a quantity of steam to give the jet sufficient force to enter into the boiler. overflow-valve h is then closed, and the inj ector operates in the usual manner. The jet of fluid will pass through the delivery-tube o with sufficient velocity to enter the boiler.- pressure chamber, and in consequence of the only slightly-increased diameter over the delivery-tube of the tube n, and to its proper length of cylindrical bore, the jet will retain sufficient of its initial velocity while passing The through the guide-tube n to prevent any portion of the jet from being forced or held back, whereby leakage between the interior of the tube a and the exterior of the tube o would be caused, and thus, also, the boiler-pressure will not effect the operation of the delivery-tube. The adjustment of the combining-tube and delivery-tube is automatically effected by the fluid-jet and the piston p, which latter moves the combiningtuoe with the delivery-tube toward the receiving-tube t, when, owing to a surplus of feed-water, an overpressure in the overflow-chamber is produced, while the fluidjet tends, by the exertion of its force, to move them in the opposite direction, which latter movement will take place in case of a deciency of the feed-water supply, until a suiii` lcient quantity is afforded.

My device is not limited to the operation hereinbefore described, but may be actuated in the various manners set forth in my aforesaid Letters Patent; but in the described operation steam at boiler-pressure may, if preferred, be introduced into the chamber e of the ejector independently of the injector, in which case the steam-communication d would be closed or could be omitted.

Vhat I claim as new, and desire to secure by Letters Patent, is

l. In an injector, the combination of a movable delivery-tube and a self-adjusting combining-tube supported independently of the delivery-tube by means of supports p and Z.

2. In aninjector, the combination of a selfadjusting combining-tube and a movable delivery-tube operating to discharge the jet into a tube wherein the initial velocity of the jet is maintained throughout most of its length.

3. In an injector, an adjustable combiningtube carrying and incasing a movable delivery-tube, in combination with a tube, n, into which the delivery-tube extends, substantially as and for the purpose set forth.

4. In an injector, the combination of an adjustable combining-tube carrying and incasing a movable delivery-tube, and aguide-tube extendinginto the said combining-tube around backward into the said combining-tube around 1o the said delivery-tube, as and for the purpose the said delivery-tube, and the ejector portion set forth. C, cast as a part of the said injector portion,

5. An injector comprising the injector porsubstantially as described. 5 tlon G, having the adjustable eonibming-tube JOSEPH REICHMANN.

Z, carrying and incasing the movable deliverytube o, and supported toward one end by a In presence ofguide-tube,n, secured Within the said injector EDWARD THORPE, toward its forward extremity and extending MASON BROSS.

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