US1660261A - Feed-water heater for locomotives - Google Patents

Description

Feb. 21, 1928. 1,660,261

G. H. EMERSON FEED WATER HEATER FOR LOCOMOTIVES Filed Dec. 22, 1922 4 Sheets-Sheet 1 Mam 17mm Feb 21, 1928.

G. H. EMERSON FEED WATER HEATER FOR LOCOMOTIVES 4 Sheets-Sheet 2 Filed Dec. 22, 1922 Feb. 21, 1628. 1,660,261

G. H. EMERSON FEED WATER HEATER FOR LOCOMOTIVES Filed Dec. 22, 1922 4 SheetsSheet 5' 9, l) PT] I Feb. 21", 1928. 1,660,261

G. H; EMERSON FEED WATERHEATER FOR LOCOMOTIVES Filed Dec. 22. 1922 4 ShetS-Sheet 4 Patented Feb. 21, 1928.

GEORGE E. EMERSON, 0F BALTIMORE, MARYLAND.

FEED-WATER HEATER FOR LOCON OTIVES.

Application filed December 22, 1922. Serial No. 608,548.

My invention relates to locomotives, having particular relation to locomotive feedwater heaters.

One object of my invention is to provide a locomotive with a feed-water heater andpurifier and to locate the feed-water heater and purifier in front of the smoke box of the locomotive.

'A further object of the invention is to design the feed-water heater and purifier so that it can be moved bodily to one side to allow access to the tubes of the boiler.

A still further object of my invention is to provide common means for heating the feed-water and for reducing the back pressure on the valve chamber.

A still further object of-my invention is to provide a novel locomotive feed-water heater comprising, a heater tank, means for supplying feed-water thereto, an eductor condenser operatively associated with said teed-water supply means, a valve chamber, and means operatively associating said eductor condenser and said valve chamber, whereby the back pressure on the locomotive pistons may be reduced.

A still further object of my invention is to provide a locomotive feed-water heater and purifier comprising a heating tank, a plurality of trays disposedwithin said tank and a chemical reagent positioned in said trays, said trays being so positioned that said reagent is widely exposed to the feedwater in said tank.

Other objects and applications of my invention, as Well as the details of construction and operation, whereby my invention may be practiced will be apparent from'the following description and claims, when takenin connection with the accompanying "drawings wherein,

Fig, 1 is a side view of the'forward end of a locomotive illustrating my invention: Fig. 1 is a side view of the rear end of a locomotive;

Fig. 2 is a longitudinal sectional view through the smoke box and the feed-water heater at the forward end of the locomotive;

Fig. 3 is a transverse'sectional view on the line 3-3, Fig. 1; p

Fig. at is a perspective view of one ot'the brackets; and,

Fig. 5 is a Perspective view of one of the trays.

Referring to the drawlngs, 1 is the frame.

of a locomotive of the ordinary construction.

2 is the boiler. the boiler. 5 is the smoke box located in front of the forward tube sheet 6. 7, 7 are the cylinders. 8 is the exhaust nozzle in the smoke box 5. 9 IS the stack of the locomotive. Located in front of the smoke box, and of the same diameter as the smoke box, is the heater tank 10 having an imperforate'rear wall 11, which closes the front end of the smoke box 5. The front end 12 of the heater tank is shaped to resemble the ordinary front end of the locomotive boiler. This heater tank is mounted on hinges 13, secured to the shell of the boiler, as shown clearly in Figs. 1 and 3 3 is the fire box section of 4 is the cab of the locomotive. I

so that it can be turned on its pivots to one side of the boiler in order that access may be had to the smoke box and to the tubes of the boiler. The smoke box and the heater tank are flanged and bolts 14 extend through the flanges and firmly secure the heater tank in position. Projecting from the back plate 11 of the heater tank is a series of brackets 15, Fig. 4. These brackets are arranged singly and in pairs, as shown clearly in Fig. 3, and support the trays 16. Each tray is flanged at each side, as at 17. The flanges fit over'the brackets. The inner end of each tray extends under a projection 18 at. the rear, end of the bracket and is perforated at 20 through which a projection 19 extends. By this construction, the trays are held firmly in position, but can be easily removed, when desired.

It will be noticed, on referring to Fig. 3, that the trays are arranged in series. One series is above the other and the spaces between the trays of one series are directly any water that may escape from the trays into the trays below.

In the upper portion of the heater tank is a condenser 22 to which is secured a coupling 23,having extensions 24 leading to perforated pipes 25 extending longitudinally in the upper trays 16. This condenser is connected at the upper end with a pipe 26 for the feed-water, the pipe being coupled, in turn, to an ejector 27 at the rear end of the locomotive, Fig. 1 The condenser 22 is also connected to a pipe 28 having branches 29 leading to the front valve chamber head of whereby a flow of steam may be established from the valve-chamber heads to the condenser 22 tending to decrease the back pressure on the locomotive pistons (not shown). In each branch is a valve 30. Leading from the bottom of the heater tank is a drain pipe 31. This drain pipe'exends to a feed pump 32'having a pipe 33, which is attached to a check valve 34 communicating with the upper portion of the boiler, Fig. 1. The condensed exhaust steam from the Valve chamber heads as well as the heated feed-water supplied through the-pipe 26 is thus returned in a pre-heated condition to locomotive boiler 2.

35 designates a valve for draining the heater tank. The front of the heater tank is provided with a vertically extending guideway for a ball float 37 which is connected by a cord 38 extending through a pipe 39 to a registering gauge 40 on the cab of the locomotive.

The water is purified as it flows from one tray to another. Any acids, which may be present in the water," are neutralized through the use of a proper neutralizing agent 41, such as limestone, etc., which is placed in the trays. Since the trays 16 are disposed in a number of different horizontal planes, the neutralizing agent 41 as well as other agents to be described hereinafter are supported over a comparatively large area, thereby facilitating the action of the same on the feed-water and affording ready ac cess thereto. The feed water heater 10 and more especially the trays 16 are of such a capacity as to allow the water to remain therein a suflicient time to liberate any oxygen, or carbon dioxide, before the water is delivered to the locomotive boiler.

The operation is as follows: Cold water is drawn from the locomotive tender tank in the usual manner and is forced through the exhaust steam ejector 27 and is delivered to the exhaust steam eductor condenser 22 discharging into the upper series of trays 16 1n the upper portion of the heater tank 10.

As hereinabove noted, the operation of the exhaust steam eductor condenser 22 establishes a vacuum in the pipes 28 and 29 which lead to the valve chamber head of the cylinders, so that a portion of the exhaust steam is drawn up into the condenser 22, the remainder of the exhaust steam passing from the valve chambers through the exhaust nozzle 8 in the smoke box 5.

The preheated water discharged from the condenser 22 then flows over the precipitating trays 16 in the heater, remaining a suflioient length of time for the carbon dioxide and oxygen to be boiled out. From the heater and purifier, thewater is delivered "through the pipe 31to the centrifugal pump 32, which is controlled by a steam valve in the cab, operated by the engineer. From this centrifugal pump the heated water is discharged into the boiler through the pipe 33 and check valve 34.

For feeding the heater when the locomotive is standing still, or operating at a very slow speed, the exhaust steam ejector 27 is provided with suitable nozzles (not shown) adapted to receive high pressure live steam through pipe 42, as shown in Fig. 1 The upper series of trays may be made solid or perforated. They may also be made The gases liberated during the heating'of the feed-water and condensed steam may be permitted to escape from the feed-water heater 10 through a pipe 44 extending, say, from the upper side of the heater 10, as shown in Fig. 2.

While I have. shown only one form of embodiment of my invention, for the purpose of describing the same and illustrating its principles of construction and operation, it is apparent that various changes and modifications may be made therein, without dearting from the spirit of my invention and thereforedesirethat only such limitations shall be imposed thereon as are indicated in the appended claims or as are demanded by the prior art.

I claim: 1. In a locomotive, a boiler having a smoke box at the forward end thereof; a

smoke stack for said smoke box; and a feed:

means for supplying said trays wit feed water and for preheating the same.

3. In a locomotive havin a valve chamber, the combination with a Eoiler; of a feedwater heater movably positioned in front of said boiler; a series of trays in-said heater' a condenser in the upper portion of said heater; said condenser'discharginginto the trays mounted on said trays and also communicating with said valve chamber, and a feed-water pipe communicating with said condenser. I

4. In a locomotive, a smoke box having a tank mounted on the end thereof, said tank having an imperforate back plate constituting one wall of said smoke ox and also a front plate; and a series of trays carried by at least one of said plates.

5. In a locomotive, a smokebox; a tank mounted on the end of the smoke box, said tank having a: back plate constituting the closure wall of said smoke box; brackets extending into said tank from said back plate; and trays detachably mounted on the brackets.

6. A locomotive having a smoke box at its forward end; a tank having a solid back plate closing the end of the smoke box, said tank being hinged to said smoke box; a series of brackets'secured to the back plate; and a series of trays mounted on the brackets.

Z. A locomotive snfoke box provided with a stack; .an open tank vertically hinged thereto forwardly of said stack so that the walls of said tank constitute substantially a continuation of the walls of said smoke box; and a plurality of horizontally positioned trays in said tank. i

8. The combination in a locomotive, of a boiler having a smoke box at the forward end; an open heater tank located in front of the smoke box and closing the end thereof; a series of trays in the tank; a cbnde'nser in the upper portion of the tank; and a feedwater pipe communicating with the condenser.

9. The combination in a locomotive, of a,

boiler; a feed-Water tank located in front of the boiler; a series of brackets secured to the walls of the tank; a series of detachable the brackets, each tray being flanged to extend over a bracket, each bracket having a projection extending over a tray,to hold it in position a condenser in the upper portion of the tank; means for supplying the condenser with water, said condenser discharging into the upper trays;

and a pipe leading from said tank to the boiler.

10. In a locomotive, a feed water heater having a solid back; a series of brackets on the back plate extending part way across-the tank, each bracket havinga lug at its inner end and a lug at its of flanged trays mounted on the brackets, the flanges of the trays being perforated for the reception of the lugs at the outer ends of the brackets, the inner lugs extending over the inner ends of the trays.

11. A locomotive comprising a boiler having a smoke box at the forward end thereof; a casing forming a continuation of said smoke box pivotally mounted on the same, whereby the casing may be so moved as to permit of access to the smoke box; and means for supplying feed water to said casing, said means comprising an injector and condenser, the latter being positioned in said casing.

12. In a locomotive, the combination a boiler; ofa feed water heater located in front of the boiler, said feed water heater comprising a closed casing; a plurality of series of trays in said casing, one series being above another, whereby the trays of one series may flow into the trays of the series below; means for supplying feed Water to the upper trays; deflector plates extending from the sides of .said closed casing, whereby Water may be deflected from the sides'of the easing into said trays; and a pipe leading from the lower portion of the casing to the boiler. 1

13. In a device of the class described, a supporting wall; a bracket secured thereto outer end; and a series.

with

and extending outwardly therefrom to provide a supporting arm; a tray havin a flange, the underside of which is adapte to GEORGE H. EMERSON.

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