US1093519A - Superheater. - Google Patents

Description

E. J. AKINS. SUPERHEATER. I APPLICATION FILED NOV. 29, 19 12.

1,093,519. 3 Patented Apr. 14, 1914,

FFERTS-SHEET 1.

T121. l l5 ARA w 1 l N T I Q: T 1 I I \55 1,)" l J i I I L I E' 1 I" I N Q Ii Q N e WITNESSES INVENTOR sowmr J.AAINS,

ATTORNEYS E. J. AKINS.

SUPERHEATER.

APPLICATION FILED NOV. 29, 1912.

WITNE88E8 one 0 a o H.

Patented Apr. 14:, 1914;

3 SHEETS-SHEET 3.

IIVVEIVTOR EDWIN. JAKINS,

ATTORNEYS I To all whom it .1. AKINS, or mounnsvnmu, wnsr vrnemm.

- surnnnne'rnn.

Be it known that I, EDWIN J. Amps, a citizen of the United States, and a resldent of Moundsville in thecounti of Marshall and State of west Virginia, a've invented a new and Im roved-Superheater, of which the following is a full, clear, and exact descri tion.

T 's invention relates to im rovements 1n superheaters, and particular y to superheating devices connected to and designed to be used in'conjunction with traction e nnes. The ob'ect in view is to provide a superheating evice for utilizing the waste eat from a'traction engine or similar machine, for superheating the exhaust steam and again utilizing the same in any desired manner, a for instance, m a low pressure cylinder. a

A further object of the invention is to provide in a traction on inc 9. superheater device formed with a ousing arranged preferably on top of the engine and designed. to have passed therethrough smoke and heated products of combustlon after the same have left the flues of the engine. This housing includes a plurality of steam pipes carrying live steam and exhaust steam which is superheated for mum energy to be exerte and high pressure cylinders connected with both the live and exhaust steam respectively.

In carrying out the objects of the invention, a steam traction en 'ne of any desired. kind on both the low is provided, to whic is secured a housing, the

housin bein preferably arranged on top of the boi er an extendingfor substantially the full lenah and merging into the smoke stack at the An independent smoke stack is provided with the housing at the end opposite the ordinary smoke stack and dampers or covers are provided for both smoke stacks so that the draft maybe directed to fines of the boiler, or lon 'tu either stack and consequently caused to pass either directly into the atmos here from the (finally through the shellor superheater ousing to the auxiliary smoke stack. A dome isprovided in the superheater housing, formed substantially of an enlar ed tube or pipe connected at both ends to t e boiler so that the same will be receiving live steam regardless of the angle at which the engine is traveling, and

the steam will be maintained in a dry or superheated condition by the'liot gases passing out of the second or auxiliary smoke stack.

providing a maxi-' Specification of Letters Patent. Patented Apr. 14, 1914. Application filed November 28, 1912. Serial No. 734,032.

- sure cylinder. In this way the steam, either live steam or exhaust steam, is caused to enter the respective cylinders of'the engine at the highest possible temperature so as to provide the greatestpossibleenergy with a 'ven amount of heat generated in the fire ox. Y

- A practical embodiment of the invention is represented in the accompanying drawings forming a art of this specification, in which similar 0 aracters of reference indicate corresponding parts in all the views.

through the boiler and part of the frame of ing the invention; Fig. 2 is a section through Fig. 1 approximately on the line 2-2; Fig.

3-3; and Fig. dis a view of a boiler and the superheater housing surrounding the same, together with the superheater coil, this view disclosing a slightly modified form of the invention, whereby the housingentirely surrounds the boiler barrel thus causing the smoke and unburned products of combustion to return in a spiral path or long travel distance.

by numera' s, 1 indicates a frame of any desired kind provided with suitable supporting traction wheels 2 propelled by engines 3 and 4, which are provided with cylinders 5 and 6, the cylinder 5 being a high pressure cylinder, and the cylinder 6 being a low pressure cylinder.

The detail construction of the cylinders, engines, and frame 1,. may be of any form, as the samelform no part of the present invention being shown to display the, advantages of the superheater forming the invention.

Mounted on the'frame 1 is a boiler 7 having a fire\box 81- of any usual or preferred kind. The" boiler 7 is provided with a front .chamber 9 which is usual in boilers of this Figure 1 is a longitudinal vertical sectiona traction engine and a superheater embody- 3 1s a section through Fig. 1 on the line Referrin to the accompanying drawings kind, the chamber 9 opening into a smoke stack 10. The smoke stack 10 is provided with a cover 11 pivotally mounted so as to be operated by a rod 12. The smoke stack merges into and forms part of a superheater housing 13 which extends preferably for the full length of the boiler 'Z' and is provided with an auxiliary stack 14. The stack 14 has associated therewith a pivotally 10 mounted cover 15 designed to be operated by a rod or link 16. The lower part of the housin 13 may be secured directly to the boiler as shown in Fig. 3, or may be bent around and connected together so as to de- 15 fine an independent housing or tube. From the construction just described it will be seen that the smoke and hot products of combustion may pass out stack 10 when the lid or cover 11 is open, but when the lid or cover is closed the smoke and hot products of combustion will pass out stack 14, the

cover thereof being, of course, held open.

In traction enginesit is often found necessary to transport the same over roads or other places having a greater or less amount of grades so that special means must be provided for directing the steam to the cylinders of the engine. According to the present arrangement a dome 17 is provided which is connected by suitable pipes 18 and 19 to the opposite ends of the boiler 7 so that if one of the pipes is covered with water the other pipe will be feeding steam to the dome and thus maintain a proper pressure in the dome from which the steam is directed to the engine. One end of the dome is closed, while the other end is provided with an aperture designed to receive pipe 20, which pipe projects to a central point in the dome but does not fit snugly the dome so that there is ample space around pipe 20 for steam from pipe 16 to enter the dome By this construction and arrangement a substantially even pressure of steam is provided for pipe 20 which has connected therewith a superheating pipe 21 coiled around dome 17 and finally connected with the discharge pipe 22 connected with the steam chest of cylinder 5. After the'steam from pipe 22 has been utilized in the high pressure cylinder 5, the same isexhausted into pipe 23 and from thence it is discharged into a coiled pipe 24 which is arranged in housing 13 so that the exhaust steam is thus superheated or again raised in temperature.

The steam from coil 24 passes into a discharge pipe 25, and discharge pipe 25 leads to the low pressure cylinder 6. The exhaust from low pressure cylinder 6 may be directed to the atmosphere or to either of the smoke stacks, as desired, for assisting the draft.

In starting there is of course no steam in the pipe 25, or at least there is only a small amount of steam even after the cylinder 5 27 carriesa puppet valve 28 designed to be I set so as to be opened at any desired pressure. The puppet valve 28 could be, for instance, set so as to close when the pressure in pipe 25 was half that in pipe 20. If the puppet valve was set for operating in this manner the low pressure cylinder would be provided with live steam at the time of starting with the pressure half that of the high pressure cylinder so that substantially a maximum impulse is provided at the starting. As the high pressure cylinder exhausts into the coil 24 the amount of live steam supplied to pipe 25 will be gradually diminished until there is substantially no live steam supplied and thus a minimum amount of steam will be used while a maximum result will be obtained.

When first starting the fire the cover 11 is raised and cover 15 is closed so that a direct draft will be provided. After the fire has'been properly started the cover 11 is closed and the cover 15 opened so that the draft will be through the housing 13. After the proper amount of steam has been raised and it 1s designed to startthe engine, the manually operated valve 29 is opened so as to allow the live steam to pass through the puppet valve 28 into the pipe 25. After. this has been done the steam is turned on to the cylinders 5 and 6 in any desired way and live steam will be utilized in both cylinders until the exhaust from the high pressure cylinder 5 will be suflicient for supplying the low pressure cylinder 6 with steam. When this occurs the valve 28 automatically closes under .the pressure of the steam. If desired, the valve 29 could be closed also. In connection with these superheating coils and the 'domes, it will be observed that the same is arranged on top of the boiler 7 so as to receive any heat radiating therefrom as well as the heat from the smoke and hot products of combustion pipes. It will also be noticed that this superheater covers or protects the upper part of the boiler and consequently prevents the radia-. tion at that point.

In Fig. 4 will be seen a slightly modified form of the invention, in which the front part of the boiler 7 issurrounded by a housing 1-3 which thus receives heat by radiation from the boiler as well as from the smoke and hot roducts of'combustion designed to be directed through the smoke, stacks 10 and 14 respectively. In this form of the invention the boiler 17 is mounted in the same manner as shown in Fig. 1, but the superheating coil 30 is wound or passed mast c around the entire boiler so as to receive a maximum amount of heat therefrom. In

this form of the invention it will be observed that the steam may be taken directly from the boiler 7 by the pipe 31 or may be caused to pass through the superheating coil 30 and be discharged out pipe 32. The

pipes 31 and 32 may be connected to one or more cylinders in any desired manner,

the same not forming any part of the invention.

Having thus described my inventioml claim as new and desire to secure by Letters Patent 1. In a superheater device for traction engines, the combination with the boiler of a traction engine, of a steam dome connected to the upper part of said boiler and in free communication with the upper part of the interior of the boiler, means for directing steam from said steam dome to a point of discharge," and exhaust reheating coil surrounding said dome, and means for automatically connecting said dome and said coil for maintaining a predetermined pressure in said coil. I v v 2. In'a superheater for engines, the combinationlwitha boiler, of a dome connected at th'e'upper part of "said boiler whereby the same is adapted to receive steam regardless of the angle of said boiler, means for direct-' ing steam from said dome to a point of utilization, an exhaust reheating coil arranged adjacent said dome,'means for directing the exhaust from said point of utiliza-' tion to said superhea'ter coil, and means for a pipe for discharging'said steam to a second point 'of-discharge. Y Y

4. Ina superheater of the class described,

. thecombinatio'n with a boiler, of asteam dome Y connected with said boiler," and a superheater pipe connected with and surrounding said steam dome.

5; In-a'superheaterof he class described,

, the combination with a boiler, of a steam dome positioned adjacent said boiler, means for connectin boiler, a super eater coil connected with said dome, means. for directing the steam from said'superheater coil to apoint of utilizasaid steam dome with said tion, an exhaust reheating coil surrounding said superheater coil, means for directing the exhaust from said pointof utilization to said exhaust reheating coil, and a pipe connected with said exhaustreheating coil for directing the steam to a .second point of utilization. V

6. In a superheater of the class described, the combination with a boiler, of a dome arranged near said boiler, an exhaust reheat-' ing coil surrounding said dome, and auto-- matic means for maintaining a certain pressure in said exhaust reheating coil.

7. In a superheater of the class described, the combination with a boiler, of a steam dome connected with said boiler and ar ranged adjacent thereto, means for directing the steam from said dome to a point of utilization, an exhaust reheating coil sur rounding said dome, means for directing the exhaust from said point of utilization into said coil, means for directing the steam from said coil to a second point of-utilization,

connecting pipes for connecting-said dome and said coil, and means for regulating the amount of steam passin from saiddome to said coil through said connecting pipes whereby the pressure in said coil will bear a predetermined relationship to the pressure in said dome. v

8. In a superheater of the class described, the combination with a boiler, of a dome connected with the boiler, means for connecting the opposite ends of said dome with said boiler, said means entering said boiler adjacent the opposite ends thereofla pipe extending through one end of said donieinto and to substantially a central point whereby steam is distributed from the center ofthefmeans for directing steam from .said super-.

heater coil to a point of utilizatioman exhaust reheating'coil surrounding said dome,

dome to said pipe, a superheatercoil con- 1 nected with said pipe adjacent said dome,

means for directing the exhaust from said" point of utilization to said exhaust reheating coil, means connected with said second exhaust reheating coil for directing the steam therefrom to a second point of utilization, means for connecting the pipe extending into said dome and said exhaust reheating coil whereby steam may pass from said dome into said exhaust reheating coil, and means for regulating the amount of steam passing from said dome into said exhaust reheating 'coil.

, In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

EDWIN J. AKINS. Witnesses D. L.TimNEn, J. AQSIeaFoos r.

- Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

.wath ing ton, D. 0. i

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