US1889924A - Locomotive exhaust piping and feed water heater - Google Patents

Description

Dec. 6, 1932.

F. KIESEL, JR

LOCOMQTIVE' EXHAUST PIPING AND FEED WATER HEATER 1927 2 Sheets-Sheet 1 Filed Dec.

Dec. 6, 1932. w. F. KHESEL, JR 1,389,924

LOCOMOTIVE EXHAUST PIPING AND FEED WATER HEATER Filed Dec. 30. 1927 2 Sheets-Sheet 2 %12?7M% 1M 51%- QYM "W- atlioz M11 Patented Dec. 6, 1932 UNITED STATES,

WILLIAM F. KIESEL, .13., or ALTOONA, rnnnsvrvanm LoooMo'rIvn EXHAUST PIPING AND FEED WATER. HEATER Application filed December 30, 1927i serial No. 243,725.

This invention relates to locomotives and more particularly to feed Water heater ar-- rangements and appurtenances for use conjunction with'locom'otives.

It is a general object of the present invention to provide a novel arrangement of feed water heater and appurtenancesfor use on locomotive boilers.

More particularly the various objects and features of novelty of the present invention may be enumerated as follows: I

1. The arrangement of a feed water heater supported by the smoke-box and arranged behind the stack. j

2. The provision of an opening in the smoke-box through which a portion of the feed water heater projects, the opening being closed by the heater. i

3. The provision of exhaust steam conduits from the steam chests of'the cylinders to the feed water heater entirely within the smokebox, whereby heat is conserved and the C011 struction of the locomotive simplified.- V

4. The arrangement of the hot water pipe,

from the feed water heater to the feed pump partially within the smoke-box.

' 5. The arrangement of the feed water heater in as close proximity to the valve chests as possible in order that the exhaust steam passages will be as short aspossible and the.

friction losses of the exhaust steam reduced to a minimum.

6. The connection of cold pipes to the outside portionof the feed water heater and hot pipes to the inside portion.

Other and further objects and features of the-invention will be apparent to those skilled in the art upon a consideration of the accompanying drawings and following specification whereinis disclosed a single exemplary embodiment of the invention, with the understanding however that such changes may be made therein as fall within the scope of the appended claim.

In said drawings:

the front end of a locomotive with certain parts of the boiler barrel broken away to more clearly illustrate the arrangement of feed water pumps and piping; and

steaminto the-petticoat 22 depending from Fig. 1 is a l'ongitudrnal vertical section of Fig. 2 is a composite view showing on the right hand side a front'elevation of alocomotive and'on the left hand side a transverse section-taken on broken line 22 of Fig. 1. Feed water heaters'of both the open and the closed type have been used in conjunction with locomotive boilersfor the purpose of increasing the economy and therefore it is not considered necessary to give a complete description of either the construction or the operation of such devices. The one disclosed in'the present application is of the'so-call'edj open type, i. e., the exhaust steam and the water. are; intimately intermingled, whereby the steam is condensed and'the condensate added to the feed waterywhereby all of the heat in the part of the exhaust steam which is condensed is made use of. a 1 i Referring'to the drawings,1there is disclosed-at 10 the barrel of a locomotive boiler provided at the front end with the flue sheet 11. The flues' have been omitted for the. sake of clearness of illustration. Fitted to the frontend of the boiler barrel is the smoke box 12', having the tubular portion 18 making an air-tight fit with the front end of the barrel 10, where it projects beyond the flue sheet; About midway of the length of the smoke-box and at'the top is the'stack 14, here shown as formedintegral with the smoke-box casting. The smoke-100x is supp'ortedron the'cylinder saddle 15- which carries at either side'the power cylinders16, each surmounted by a valve'charnber 17 and a steam chest 18, all as well known in the art.

Steam is supplied to the cylinders 16 in any desired manner and controlled by the valves 17. Exhaust steam from each cylinder 16 passes through the valve chamber 1 7 and is exhausted therefrom into the lateral passage 19. A portion of this steam passes through the conduit 20 to the centrallyarrangedexhaust nozzle 21, which directs the the internal stack'portion' 28 which is secured to the outer stack portion 14. It willobe un-, derstood that the hot flue gases are discharged into the smoke-box from the fines and are] then discharged through the stack by the ejector action of the steam issuingfrom the exhaust nozzle 21 in puffs alternating for opposite cylinders. Thereby the whole interior of the smoke-box is always filled with hot gases and smoke and the temperature within the smoke-box is always high when the locomotive is under steam.

A portion of the steam exhausted from each passage 19 1s conducted by an easy curved passage 24 to a p1pe or conduit 25 whlch 1s joined to the end ofv the passage 24' by suit able fastening means arranged between the flanges 26 and 27. This junction of the passage 24 and the pipe 25 is within the smokebox. Here it should be noted that the total quantity of steam issuing from each valve 17 is divided between the passages and 24,

each arranged with smooth curves and properly tapering sections to eliminate to a large extent friction, and to prevent a. reduction.

in the velocity head of the steam whereby maximum efficiency of the exhaust nozzle is obtained and also the maximum quantity of heat 1s retained 1n the steam which passes into the pipe 25. It will be understood here that the cylinder and steam chest arrangement is identical on each side of the locomotive and that there are thus two conduits passing into the feedwater heater. r

Just behind the stack 14 and in the upper wall of the smoke-box is a laterally elongatedopening 28. This is intended to accommodate a portion of the feed .water heater 29, the main part 30 of which is outside of the smoke-box and just behind the stack. It is of substantially the same diameter as the stack and is largely prevented from being cooled by air when the locomotive is moving forward by the shielding action of thestack. This will be clear from Fig. 2. A flange 31 on the feed water heater is adapted to be bolted down to a suitable seat 32 surrounding the opening 28, whereby the feed water heater eflectively seals the opening in the smoke-box. Thepcrtion 33 of the feed water heater which passes through the opening has the. goose neck 34 at the bottom and has the steam inlets 35 arranged laterally and diagonally of the goose neck portionwith flanges 37 thereon. These flanges are adapted to be attached into the boiler by means of a composite pump I assembly arranged outside of the boiler bar rel and rearward of the smoke-box and carried by the main frame of the locomotive. This assembly comprises a steam engine 40 connected in any suitable manner to a cold water pump 41 and a hot water pump 42 so that the pumps are driven in unison. The cold water suction line 43 leads back to the tender tank, and the cold water from the pump passes through the outside pipe 44 and is introduced into the feed water heater through the side opening 45 outside of the. smoke-box. The exhaust from the pump engine passes through the outside pipe 46 and is conducted into the iced water heater at47 outside of the smoke- The heated water infthe feed Water heater passes down the goose neck 34 and from there into the inside hot water pipe 50 which is connected to the gooseneck by means of suitable flanges as shown at 51. This pipe'50 has its lower end 52 attached to the flange of an elbow 53 formedintegral with the portion of the smoke-box at the rear face thereof near the bottom, which projects beyond the circumference of the boiler barrel ring 13. Thus the outlet of this elbow is outside of the boiler barrel. Fromthe outlet 54 of the elbow 53 a short outside pipe 55 leads to the intake 56 of the hot water pump 42. This pipe is quite short and is well insulated and forms the? only portion er the hot water conduit which is not within the heated smoke-box. The hot water is conducted from the hot water pump 42 by means of a suitably insulated pipe 57 to the boiler check valve (not shown). a The hot and cold water pumps working in unison maintain a substantialconstant quantity of water inthe feed water heater. How-' ever, means, which form no part of the present invention, are provided in the heaterto take care of the excess Water resulting from the condensed steam.

The invention provides an extremely ef fective feed water heating system. It must be realized thatthe quantity of the steam which can be supplied to the feed water heat er is materially limited, since a large. proportion of the exhaust steam is required to provide a suitable draft for the fire. The arrangement of parts as'just described'rmakes a most effective use of the quantity of steam allotted to the feed water heater since the extremely short exhauststeam conduits and the easy curved exhaust steam passages is such as to conserve the heat and the velocity head of the steam to a maximum extent. The particular location of the feed water heater results in a minimum length of steam passage and further also reduces the distance which the hot water must travel fromtheflfeed water heater to the pumps, the greater'part of the layout and one which is considerably neater in appearance and simpler and cheaper to I construct than those heretofore in vogue.

Having thus described the invention what is claimed as new and desired to be secured by smoke-box, exhaust steam outlets from said valves, a feed water heater mounted on top of said smoke-box and having a portion projecting above thesmoke-box Wall and a portion extending through the wall of the smoke-box toward said outlets, all of said feed water heater being behind the stack, conduits connecting said outlets directly to said heater and entirely in said smoke-box, a hot water outlet pipe extending from said heater to the bottom of said smoke-box, a continuation of said pipe extending through the rear wall of said smoke-box and alongside the outside of the boiler, and a cold water feed pipe connccted to the portion of the heater whichis above the smoke-box Wall.

In testimony whereof I hereunto aifix my signature,

WVILLIAM F. KIESEL, JR.

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