US537019A - ceawley - Google Patents

Description

. (No Model.) 2 Sheets-Sheet 1.

' J. E. ORAWLEY.

FEED WATER HEATER AND PURIFIER.

No. 5s7,019. Patented Apr. 9, 1895 .-...--H Q h u (No Model.) 2 Sheets-Sheet 2.

J. E. ORAWLEY. FEED WATER HEATER AND PURIEIER.

No. 537,019. Patented Apr. 9, 1895.

UNITED. STATES I PATENT OFFICE.

JAMES E. ORAWLEY, OF MILWAUKEE, WISCONSIN, ASSIGNOR OF ONE-HALF TO THOMAS L. MCGREGOR, OF SAME PLACE.

FEED- WATER HEATER AND PUHIFIER.

SPECIFICATION forming part of Letters Patent No. 537,019, dated April 9, 1895. Application filed August 15, 1894. S ial No. 620,342- (No model.) Patented in Canada July 25, 1894, No. 46,648.

To all whom it may concern:

Milwaukee, in the county of Milwaukee, and.

in the State of Wisconsin, haveinvented certain new and useful Improvements in Feed- Water Heaters and Purifiers, (for which Letters Patent of the Dominion of Canada No. 46,648 were granted July 25, 1894;) and I do hereby declare that the following is a full, clear, and exact description thereof.

My invention has for its object to provide a simple economical feed water heater and condenser having means for the filtration and purification of the Water and the extraction of oil and grease therefrom prior to the discharge of the water into a boiler pump orinector, and to that end said invention consists in certain peculiarities of construction and combination of parts, as will be fully set forth hereinafter and subsequently claimed.

In the drawings: Figure 1 represents a vertical central section of my improved device. Fig. 2 is a horizontal sectional view, on the line 22 of Fig. 1. Fig. 3 is an end elevation of my device, partly in section on the line 33 of Fig. 1. Fig. 4 is a horizontal sectional view on the line 44 of Fig. 1. Fig. 5 is a detail perspective view of the lower end of the cold water supply pipe within the receiver.

Referring by letter to said drawings, A is a condensing chamber, and receiver for cold water, having a half-head or partition aatits head end, rising to a little above its vertical center, and another half-head or partition b, at its inner end, of somewhat less height, so that the water will always flow out over the top of the partition I) at said inner end, and never rise to the height of the partition a.

B represents the outer shell of the vertical heater, and the described partition b at the inner end of the condensing chamber A is preferably an integral part of the said shell B, above which an opening is cut through said shell (preferably of the form'of a half circle, as shown) and the flanged inner end a of'the part A is secured around this opening and partition,'as by rivets b b, as best shown in Fig. 3.

O is the inside tank, which is cut out, at its upper end, on one side, around or beyond the line of attachment of the said flange 0., as shown at C, in full lines in Fig. 1, and in dotted lines in Fig. 3, and secured, as by rivets c c to the said shell B. This inside tank 0 is flanged out below and around its point of attachment to the shell B, and of considerably less diameter than that of said shell, so as to provide a steam-space c all around the tank, between it and said shell, and this tank is further open at'the top, as shown at c.

D is a wash-out pipe, extending from the bottom of the said inside tank 0 through the bottom of the shell B, and provided with a suitable cock d.

The heater is preferably supported on suitable legs E E and there is an open outlet, 6, for exhaust steam, in the bottom of the shell B.

F is a surface blow-off, extending from the inside tank 0, near the top of the water line,

and projecting out through the shell B, and provided with a suitable cock f.

At the head end of the condensing chamber A is a shell or casing G, whose adjacent wall forms the described partit on a, above which, as shown at a it is open to the chamber A, the said partition at extending down below the bottom of said part A, which is flanged and riveted to said shell or casing G, which latter is tubular in transv erse crosssection, and provided with a closed top 9, and a lower dished head g, from the bottom of which there extends a drain pipe 9 connecting with a sewer, 0rd rain (not shown). The top Q is provided with a cast iron'flange h riveted or bolted thereto, as shown at h it, there beingascrew-th readed opening through said flange and top to receive the lower screwthreaded end, h of the exhaust inlet pipe H. Just below the said inlet is a half round disk I, of less diameter than that of said shell or casing G, a series of lugs or hangers t z', preferably riveted to both the shell andthe disk,

as shown, serving to keep the said disk in its desired position, with an annular free space between the disk and interior of the shell G, as shown, for the purpose hereinafter specified.

J represents the vertical filter'within the inside tank 0, said filter being preferably supported upon a standard or post j, as shown. The exterior of this filter is composed of suitable coarse textile material L, preferably burlaps, wound continuously around a perforated metal tube, formed of two or more sections K K (the number being immaterial), which sections are formed with edge flanges 7c secured together by bolts 70', at intervals, and the burlaps being wound in as many layers as desirable, fifteen being frequently employed, the object of making the sheet metal tube in sections, bolted together, being to enable the same to be readily taken apart for cleansing or repair, whenever necessary.

M represents an inner perforated metal pipe, and between this pipe and the described sectional tube K K, the space is filled with any suitable filtering material, m, such as coke.

N is a round closed tube, forming a receiver for the filtered water and a surface trap, as afterward described, which has a bottom opening to receive the described inner pipe M of the filter, and contains a hollow lioat O, preferably of copper, which has projecting from 3 its upper side a vertical rod, 11, passing up and out through a hole in the top N" of the tube N. This top N is flanged, and bolted, as shown at 'n n, to a corresponding flange on the upper end of the said tube N.

P is a pipe which screws into the described opening in said top N and at its upper end this pipe is fitted with a stuffing-100x19, and the described rod it passes up and ou'tthrongh said pipe P and stuffing-box p, as shown, the said pipe P also passing up and out "through the top B of the shell B of the heater.

P is a transverse pipe entering the said pipe P, and provided with an equalizing valvep,said valve being controlled bye handrod 19 which passes up and out through the described shell-top B, said rod having as'uitable handwheel p at its upper end. The shell-top B is provided with a suitable manhole b secured by a proper closing device 13 as shown.

Q, q Q is a pipe leading from the supply of cold water, and entering chamberA, within which it is preferably provided with an elbow q to which is coupled a trough Q having an open top, and a closed end 1 as best shown in Fig. 5. The horizontal portion Q of the pipe is provided with a valve Q the journal g of said valve being pivoted to a link (1 which in turn is pivoted, as shown at q, to another link q, whose other end is pivoted, as shown at .1 to the upper end of the described rod n, to automatically control the flow of water in said pipe Q.

R is the outlet pipe for the hot filtered feedwater from the receiver N extending (at a plane above that of the surface blow-off F) to a four-way coupling 0", from the lowerbranch of which a pipe, R, goes to the pump (not shown) that supply the boilers with the said purified feed water. S is a live-steam pipe connecting with the upper branch of the said coupling 0", and leading from the boiler (not shown), and provided with a suitable cock 8. The remaining and outer branch of the coupling 4 is connected with a vertical equalizing pipe '1, which passes up and enters the described pipe P adjacent to its upper end, just below the stuifing-box 19, said pipe T being made in two parts, with a coupling t, as shown. The lower end of the pipe T is connected to a watergage U, the upper end of which intercepts said pipe T at the point it.

Above the water line of the described inside tank C is an overflow opening '0, from which extends the upper end of a siphon V, which empties into a receiving pipe W, which in turn empties into a drain or sewer.

X is a washout pipe leading from the condensing chamber A, to a sewer or drain, said pipe being provided with a suitable cock to, as shown. The bottom of the sectional metallic tube K K of the filter J is closed by a solid plate as shown at Y, and adjacent to this bottom plate one of said sections is out out, to form a door-way, as shown at 2, so that, when the coke or other filling m is changed, the layers of burlaps L are unwound and removed, and the said filling is readily emptied out through said door-way z, which latter is protected by a vertically sliding perforated door Z, moving in exterior guide-ways of any ordinary construction. The fresh coke is filled in through the open top 3 of the sectional tube K K,between its inner wall and theouter wall of the receiver N, when "the burlaps have been removed.

The operation of my device will be readily understood from the foregoing description of its construction, taken in connection with the accompanying drawings. I have already explained how the filter is filled with coke or other suitable material, and how it can be emptied of spent coke and the parts of the filter taken apart and replaced. If the filter J becomes clogged with impurities, this can quickly be remedied, by opening the cock d in the wash-out pipe D, and the cock 3 in the live-steam pipe S, thereby blowing out all impurities in from fifteen to twenty minutes while the engine is running. As this filter J is always under water the impurities that adhere to it never get hard, and hence, owing to their said softened state, this blowing out with live steam for the length of time stated produces a clean filter, which, in the very worst of waters can be operated from nine months to a year without changing burlaps, and from two to two and a half years before there is any necessity of changing the coke or analogous filling. The exhaust steam from the engine which is employed to heat the IIO feed-water is mixed with considerable grease and oil, and as said steam escapes from the exhaust inlet pipe Hit strikes first against the half round disk I and the oil clings to this disk, moving by gravity over its surface and dropping down through the space between the bottom of said disk and the adjacent inner wall of the casingG into the dished head g and thence passing out through the drain- .instantly heating it. This steam passes along,

above the mass of water in the chamber A and enters the tank 0, through the opening above the partition I) and after filling said tank above the water line, the steam passes up and out through the open top of said tank, from whence it fills the described steam-space 0 between said tank 0 and its outer shell, B, forming thereby a steam-jacket for the said,

tank, and eventually escaping out through the open outlet e, but keeping the water in the tank 0 always at the temperature of the exhaust. As this heated water passes through the burlaps, perforated tube, and coke filling of the filterJ, and enters the perforated pipe M itpasses up into the tubular receiver N,-

which likewise forms a surface trap, as it is a closed tube and the surface water in the tank cannot possibly get within the tube N except through the filter, as described. When the water in thetank reaches a certain level the float 0 within the tube N rises to the same level, and its rod n closes the valve Q in the cold water inlet pipe Q by means of the described link connections, in an obvious manner, the gage U always showing the height of the water within the said tube N, and if the water within the tube Nis ever forced, by the exhaust pressure within the tank C, to a higher level than that of the water in said tank, (which would be instantly shown by the described water-gage U) it is only necessary to open the valve p in the pipe P, by means of the hand-rod 19 so that said pipe Pwould be open, to enable the exhaust pressure within the said tank 0 to act upon the water within the tube N (the exhaust steam entering through the open pipe P, and passing down through pipe P) to instantly equalize the pressure and reduce the Water in the tank 0 and tube N to a common level, the described equalizing pipe T serving to perform the same function with respect to the water in the gage U.

Whenever the surface water within the tank 0 becomes foul or dirty, it can be gotten rid of by merely opening the cockf of the surface blow-off F. Should the water within the tank rise to the level of the outlet 4), it is instantly siphoned off and automatically carried to the sewer, through the siphon V and receiving pipe W. Should it be necessary to clean or repair the chamber A, at any time, the water therein can be quickly emptied by opening the-cock a: in the wash-out pipe X.

It will beunderstood thata considerable part of the exhaust steam which enters the casing G and thence passes into the chamber A becomes immediately condensed within said chamber, the water of condensation flowing therefrom into the inside tank 0.

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

1. The combination with afeed water heater comprising a vertical outer shell and vertical inside tank supported therein andiof less diameter than that of said shell to afford a steam-space all around the said tank, of a horizontally disposed condensing chamber and cold water receiver secured to and communicating with the'upper end of said tank, a casing secured to, and communicating with the other end of said chamber, an exhaust steam inlet within said casing, and a cold water supply pipe entering said chamber adjacent to the passage-therein from the said casing and terminating in an open topped and closed-ended trough located above the waterline of said chamber..

2. The combination with the condensing chamber and cold water receiver, of a feedwater heater, of a casing secured thereto and having a steam-passage communicating therewith, an exhaust steam inlet entering the up per part of said casing, a dished head forming the lower part of said casing, a drain pipe leading from said dished head, and a half round disk supported within said casing at some distance from the inner wall thereof and located immediately below the said exhaust steam inlet, to receive the oil and grease from said exhaust steam, and convey the same to the said dished head and drain pipe.

3. The combination in a feed-water heater of a suitable tank, a vertically arranged filter supported within said tank, a tubular receiver communicating with said filter, and having a vertically extending pipe projecting from its upper end, a cold water receiver and condensing chamber communicating with the upper end of said tank above its water line, an ex haust steam inlet, and a cold water supply pipe communicating with said chamber, a valve within said last named pipe, a float within said tubular receiver, a rod projecting from said float and passing up and out through said tubular receiver and its vertical pipe, and linked to the journal of said valve to automatically control the flow of Water in said pipe, a pressure equalizing pipe leading from the pipe above the tubular receiver, an opening into the space within the tank above its water-line, a valve in said pipe, an outlet for the purified hot-waterleading from said tubular receiver, a four-way coupling connected to said pipe, a live-steam pipe and a pipe lead ing to the boiler connected to said coupling, another pressure equalizing pipe also connected to said coupling and leading to the vertical pipe above the tubular receiver, and a watergage connected to said last named pressure equalizing pipe.

4. The combination with an open-topped feed-water tank of an outer shell surrounding the same with a steam space between the two, a condensing chamber and water receiver communicating with the upper end of said tank, a cold water supply pipe having an outlet within said chamber, a casing at the end of said chamber opposite the tank containing an inlet for exhaust steam and a receiver for oil and grease beneath said inlet, and having a steam passage into said chamber adjacent to the cold water outlet, a filter in said tank, a closed tube communicating with said filter and forming areceiver for filtered Water and a surface water trap, a vertical pipe projecting up from said tube, a float within said tube, a rod extending up from said float and passing JAMES E. CRAVVLEY.

Witnesses:

H. G. UNDERW'OOD, HENRY DANKERT.

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