US1308138A - young - Google Patents

Description

c. 0. YOUNG. FEED WATER HEATER. APPLICATION FILED APR.2, I9I6- 1 ,308 ,1 3-8. 1 Patented July 1, 1919.

3 SHEETS-SHEET I.

WITNESS:

ATTOHN EYS.

c. n. YOUNG.

FEED WATER H EEEE R.

c. D. YOUNG.

FEED WATER HEATER.

APPLICATION FILED APR.20. I916- 1,308,138. 1 Patented J111y1,1919.

WITNESS:

ATTORN EYS.

- Heaters, of which the following is a speci UNITED STATES 1 PATENT-ormo-E.

CHARLES some, OFIAIQTOQNLPENINSYLVANIA.

risen- ATER firem n. f l

isosgisa a To all whom it may concern:

Be it known that 1, CHARLES 1D. YOUNG, a

citizen of the United States, residin' at Altoona, in the county of Blair and tate' of,

Pennsylvania, have invented certain new and useful Improvements in Feed-Water fication.

The invention-relates to feed water.heaters and particularly, to those for use upon locomotives and traction-engines. The invention has for its primary Objects the provision of a water heater adapted to utilize both the waste heat ofjthe exhaust from the cylinders and that of the gases passing" through the smoke box; the provision of a construction wherein the feed water heater in the smoke box is made to serve the function of a spark netting or screen; theprov1s1on of a constructlon arranged to cause the'gases passing the heater to follow a tortuous path and absorb a maximum amount of heat from such gases; the pro.-

vision of improved means for increasing the path of travel of the water through the tubes of the heater and the velocity thereof thus increasing the'amount'of heat absorbed by the heater and reducing the. opportunity of scale formation; the provision of improvedmeans for securing the tubes of the heater in place and for permitting the clean ing of the tubes; and the provision of improved positive means for keeping down the formation-of scale upon the water tubes. Certain embodiments of the invention are illustrated in the accompanying drawings, wherein-- v Figure 1 is a longitudinal section through the smoke box" of'a locomotive equipped with my feed .Waterheating system; Fig. 2

is a front elevation of the apparatus of Fig. 1, the front end of the smoke boxbe-in-g removed; Fig. 3 is an enlarged section through one of the tubes of the heater in the smoke box; and Fig. 4 is a partial section through the front end of a smoke box provided with till a modified type of heater, and Fig. 5 illustrates a further modification.

Referring first to the general ,arrangement, A is the smoke box of a locomotive of the ordinary type to which the gases of combustion are conducted through "the fire tubeslB; C is the hood leadin 'to. the stack of the l0comotive;lD is the exhaust nozzle;

E is the smoke box feed water heater which also acts as a screen for cmders or sparks;

take the steam from any Specification of Letters Patent. Patented; J 1,- 1919, Application fi1edApri120,.1916'. Serial No. 92,351;

and is a feed water heater to which exsteam from the locomotive for heating the water in the heater F- The conduit 1 may oi-nt between the cylinders and the nozzle & the point from which the steam is withdrawn being immaterial in so j far as the'present invention is concerned, and a number of points of withdrawal being illustrated in myapplication above referred to. The water to be heated is supplied through the pipe 2 (Fig. 1) and withdrawn through the outlet pipe 3 which leads into the passage 4 (Fig. 1) at the bot- 6 tom of the heater F.

As shown in Fig. 1, the heater E is provided With two headers 5 and 6 and. with four sets of pipes, 7 8, 9 and 10. The lower 7 header 5 1s provided with three passages 4,

11 and 12 leading longitudinally, thereof while'the upper header 6 is provided with two passages 13 and 141 leading longitudinally thereof. Water supplied to the chamber 4 at the left-hand end thereof (Fig. 2)

passes upwardly through the set of pipes 7 to the passage 13. It then circulates downward through the tubes 8to the passage 11 and then upthrough the tubes 9 to the passage 14. From the passage 14: the water flows down through the tubes 10 to the pas- :sage 12, to the right-hand end of which is connected the outlet pipe 15 (Fig. 2) lead- :in to the boiler. 1

lates 16, 17, 18 and 19 (Fig. 1) are provided in the smoke box in order to cause the gases from the fire-tubes 'B to flow downward .and to the front of the smoke box 'and then upward and to the-rear through the'heater F to the hood C, the

heater F thus being. made to act as a screen for oinders and sparks. *lin order tomake the heater efi'ective for this purpose the tubes are made relatively small and closely spaced, and the sets are staggered, as indicated 111 Fig. 1, so that the gases are forced .to pursue a zig-zag path as they flow through the heater.

In order to still further increase the heating capacity of the heater and render it more effective as a screening device, the V-shaped plates 20 are employed, the tubes of the heater extending through such plates and the entire heater being galvanized to hold the plates in position and make a proper contact between the 'plates and the tubes. 'These plates are preferably made thimto increase their heat absorbing capacity and at inter- :1 0 vals heavier plates 21 are provided for s ac- .ing and supporting the tubes. The p ates are preferably made V-shaped in cross-section, as indicated in Fig. 1, so as to give a double change to the direction of move ment of the gases and the angle is such that cinders and sparks will fall off of the plates by gravity. Either the plates or the tubes might be sufiicient to perform the screening function, depending upon the spacing, but taken together a still more effective screening is secured combined with a-very efficient heat absorption.

The tubes are preferably held in place as indicated in-Fig. .3, the lower ends being threaded into the Wall of the lower header 5, as indicated at 22, and the upper ends beingexpanded into the header 6, as indicated at 23. This prevents any relative movement of the tubes with respect to the headers. In order togive access to the upper ends of the tubes the removable closure plugs 24 are employed opposite the ends of the tubes (Fig. 1). Grooves are also provided in the header 5 at the lower ends of the tubes, as indicated at 25 in Fig. 3. These grooves become filled with the galvanizing material and serve to make the Joints tight and prevent any accidental unscrewing of the tubes. I In order to keep down the scale in the tubes the rotatable spiral plates 26 are used. The flow of the water through the tubes causes these plates to rotate and not only prevents the formation of scale due to the 15 circular movement imparted to the water, but actually scrapes off such scale as it is formed andbefo're it has an opportunity to become fixed in position. The tubes also serve to give thelwater a spiral movement, thus increasing the' distance which the Water passes in travelingfrom one end of the tube to the other and also causing the water to move at a higher velocity. This is advantageous as the heat transfer from ,the walls of -.the tubes .to the wateris increased.

Fig. 1- illustrates a modification of the heater in the smoke box, such heater havinga modified header construction. The lower header consists of two members 27 and 28 provided with the passages 29-, 30'

the two members 32 and 33 provided with the passages 34, 35 and 36. The lower ends of the connecting tubes 37 are threaded into the member 32 as in the other type of construction, while their upper ends are expanded into the member 32, also as shown in the construction of Fig. 3. Water enters the passage 29 from the inlet ipe 38. The circulation of the water bac and forth from one header to the other issubstantially as heretofore described in connection with for cleaning and replacement from the out- In. this type of side of the smoke box. construction the heat absorb'in plates are not shown but might be use as in the construction of Fig. '1 or in a modified form.

Fig. 5 illustrates a modification of the "spiral plates 26 of Fig. 3. In the modified structure the spiral plate 40 is corrugated, such corrugations being shown as transverse but may be variously arranged. The purposeof the corrugations is to give a further agitation to the water flowing along the plates. I

The term spark arrester as found in the specification and claims is used in the sense in which such term is understood in the railroad art, namely, a device which will arrest sparks of a size sufiicient to cause fires adjacent the road bed.

What I claim is:

1. The. combination with having a smoke box with-a passageway for the gases from the locomotive fire-tubes, of a water heater located in such passageway and having-its heat absorbing'surfaces comprising closely spaced relatively. small water tubes and'transverse plates contactingwith the tubes and arranged to form a spark and cinder netting. 2. Th'e combination I with a locomotive having a smoke box with a passageway for .the gases from the locomotive fire-tubes, of a water heater located insuch passageway Iandhaving its heat absorbing surfaces comprising water tubes and transverse heat absorbing plates located thereon spaced closely enough to constitute a spark netting and arrest sparks and cinders above a predes termined slze.

oHAnnns D. round.

a. locomotive

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