US1259615A

US1259615A - Feed-water heater.

Info

Publication number: US1259615A
Application number: US18682317A
Authority: US
Inventors: William A Gibson
Original assignee: WILLIAM E HEARST
Current assignee: WILLIAM E HEARST
Priority date: 1917-08-17
Filing date: 1917-08-17
Publication date: 1918-03-19
Anticipated expiration: 1935-03-19

Description

W. A. GIBSON.

' FEED WATER HEATER.

APPLICATION HLED June. 1914. RENEWED AUG-17.19M-

1,259,615, Patentad Mar. 19,1918.

IJNITED %TATE% PATENT @FFIQE.

WILLIAM A. GIBSON, 0F PEORIA, ILLINOIS, ASSIG'NOR TO WILLIAM E. HEARST, OF PEORIA, ILLINOIS.

FEED-WATER HEATER.

Specification of Letters Patent.

Patented Mar. 19, 1918.

Application filed July 80, 1914, Serial No. 854,019. Renewed August 17, 1917. Serial No. 186,823.

To all whom it may concern:

Be it lmown that I, VILLIAM A. GIBSON, a citizen of the United States, residing at Peoria, in the county of Peoria and State of Illinois, have invented certain new and useful Improvements in Feed-Water I-Ieaters, of which the following is a specification.

This invention relates to improvements in feed water heaters for boilers, in which the water to be supplied to the boiler is passed in contact with steam heating elements for raising the temperature of the water before its admission to the boiler.

The object of my invention is to provide a heater of simple construction in which the steam, after passage through the steam heating elements, is exhausted directly into the water previous to its introduction into the heater, thereby preventing waste of steam and also utilizing all the heating properties of the steam to raise the temperature of the water.

A. further object is the introduction of steam into the water duct in such a manner that it will tend to force the water through the heater.

In the accompanying drawings which illustrate my invention Figure 1 is a side view'of the heater, a portion thereof being broken out of the center to allow an en larged view to be shown, a portion of the water feed pipe also being broken away at the point where the steam from the heater is delivered thereto so as to show the structure for introducing the steam to the water duct; Fig. 2 is a vertical longitudinal sectional view through the heater shown in Fig. l; and Fig. 3 is a partial view of a locomotive showing the manner of applying my heater thereto.

In the drawings 1 and 2 are end fittings which are connected and spaced apart by means of the tube 3, secured to said fittings. Extending entirely through the fittings 1 and 2 and the tube 3 is a tube 4 which is of somewhat less diameter than the tube 3 so as to provide a narrow annular passage way 5, for water, between the

tubes

3 and 4. This tube 4 is swaged or expanded at each end so as to provide a tight joint with the fitting 1 and a tight joint with the plate 6 which is bolted to the fitting 2 andforms a closure for the end of said fitting. Extending lengthwise within the tube 4 and placed at the top thereof, is the tube 8 which is of considerably smaller diameter than the tube 4 so as to allow a large space between the

tubes

4 and 8 for the passage and expansion of steam as hereinafter explained. The tube 8 at one end extends through and is secured to the head 9, which said head is bolted to the fitting 1 and forms a closure for the tube 4. The other end of the tube 4 is closed by means of the head 11 which is secured in contact with the plate 6 by means of the bolts 7 which pass through the head 11 and the plate 6. The intermediate plate 6 is provided at one end of the heater to facilitate replacement of the tube 4. As is apparent, when this tube 4 is to be replaced the swaged end of the tube 4, which engages the end fitting 1, is turned in by means of a chisel or otherwise so as to be released from the fitting 1 and the removal of plate 6 will. then withdraw the tube 4 from the heater.

The tube 8 terminates a short distance from the head 11 so as to provide an outlet therefrom into the larger tube 4 and this said end of the tube 8 is supported by means of a stem 12 which is secured to the head 11 and engages the inner surface of the tube 8. The tube 8 has a small opening 10 in the bot tom thereof adjacent the head 9 for dis charging the water from the pipe 8 which results from the condensation of steam therein.

13 (in Fig. 3) represents an injector or pump which is commonly used to force water into the boiler and the water feed pipe 14 therefrom is connected to the under side of the fitting 1 so as to communicate with the interior thereof and there is a pipe 15 connected to the fitting 2 at the bottom thereof which communicates through the check valve 24 with the boiler so that the water supplied by the injector 13 passes through the pipe 14 into the fitting 1 and is then passed in a narrow stream through the annular opening 5 to the interior of the fitting 2, thence through the pipe 15 into the boiler.

A pipe 16 is connected to the steam dome 17 of the boiler and is connected with the protruding end of the pipe 8 to supply steam to the heater, and the tube 18 is connected with the head 9 to provide an outlet from the tube 4 of the heater and this pipe is con nected through the

check valve

23 and 20. with the feed water pipe 14 at a point ust" Water through the heater into the boiler,

the valve 22 being opened steam will enter the tube 8 and pass from the end of said tube into the tube 4:, in which it is allowed to expand. Th; tube 4 presents a large surface to the water within the heater and by reason of the tube 8 being located within the tube 4 any heat from the tube 8 tends to raise the temperature of the steam within the tube 4, which acts upon the water in the heater and there is therefore no heat wasted in the passage of the steam through the heater. The exhausted steam from the heater through the pipe 18 into the chamber 21 of the T 20 and is forced into the water within the pipe 14 as it passes through the nozzle 19. This injection of the steam into the water not only heats the water but cooperates with the injector 13 to force the water through the heater.

It will be observed therefore that I have not only constructed the heater so that there isno possible waste of heat in the passage of steam therethrough, but I have also applied the steam exhausted from the heater for the purpose of raising the temperature of the water and also utilize the pressure of the escaping steam to assist in forcing the water through the heater.

What I claim is:

1. In a device of the class described, the

combination of a heater provided therein with a passageway for steam and a passageway for water surrounding the steam passageway, and means for introducing the steam after passing through the steam passageway and having its pressure and temperature lowered into the water flowing to the water passageway anterior to its delivery to said passageway.

2. In a device of the class dearibed, the

combination of a heater provided therein with a passageway for steam and a passageway for water surrounding the steam passageway, an inlet to and an outlet from said water passageway. and means for introducmg the steam after passing through the steam passageway and having itspressure and temperature lowered into the inlet anterior to its connection to the water passageway. r

3., Ina device of the class described, the combination of v a heater provided therein passes with a passageway for steam and a passageway for water surrounding the steam passageway, an inlet pipe leading to the water passageway and provided with 'a water delivery nozzle anterior to its connection to said passageway, a steam chamber surrounding said nozzle and an exhaust pipe from the steam passageway opening into said steam chamber. 1. In a device of the class described,; the combination of a heater provided therein with a passageway for steam and a passageway for water surrounding the steam passageway, an inlet pipe and an outlet pipe at opposite ends of the water passageway, a reducing nozzle forming a part ofthe inlet pipe exterior to the heater and in advance of the inlet end of the water passageway for forcing water through the inlet pipe, a

steam chamber encircling said nozzle and 85 communicating with the inlet pipe, and an exhaust pipe from the steampassageway to said steam chamber. 7 V

5. In a device of the class described,- the combination of a heater provided therein; with a return passageway for steam, a passageway for water entirely surrounding the steam passageway to provide for an exchange of heat between the steam and water, an outlet pipe and aninlet pipe at opposite ends of the water passageway, and a pipe 7 connecting the return end of the steam passageway to the water inlet pipe in advance of its connection to the water passageway.

6. In a device'of theclass described, the 100 combination of a heaterprovided therein with a return passageway for steam, a passageway for water entirely surrounding the steam passageway to provide for an exchange of heat between the steamand water,

connection to the water passageway, and

means in the inlet pipe at thepoint of connection with the steam pipe for forcing water into the heater and causing the steam of reduced temperature delivered thereto to commingle with the flowing water.

7. In a device of the class described, the combination of a heater provided therein with a tortuous passageway for steam having an inlet at one end and an outlet at its 010- posite end, a passageway for water entirely surrounding the steam passageway tcprovide for an exchange of heat between the steam and water, a water inlet pipe and a water outlet pipe at opposite ends of the water passageway, and a connection between the outlet end of the steam passageway and the water inlet pipe in advance of its opening into the water passageway to convey steam of reduced temperature to the entering water.

8. In a device of the class described, the combination of a heater provided therein with a relatively long steam passageway longitudinally divided to cause the steam to move from end to end and return, a passageway for water entirely surrounding the steam passageway, a water inlet pipe to and a water outlet pipe from said water passageway, and a pipe connecting the return end of the steam passageway with the water inlet pipe in advance of its connection to the water passageway.

9. In device of the class described, the combination of a heater provided therein with a relatively long steam passageway comprising an outer tubular member closed at one end surrounding an inner tubular member opening into the outer tubular member near its closed end, a water passageway encircling the steam passageway from end to end thereof, a water inlet pipe and a. water outlet pipe at opposite ends of the water passageway, a steam outlet pipe extending from the outer tubular member of the steam passageway to the water inlet pipe in advance of its connection to the water passageway to introduce steam of reduced temperature into the water entering the heater, and a steam inlet pipe connected to the inner tubular member of the steam passageway.

10. In a device of the class described, the combination of a heater comprising a longi tudinal casing, a steam passageway extending therethrough from end to end formed of an outer tubular member with closed ends having a steam outlet through one end, and an inner parallel tubular member near the top of the outer member extending through one or the closed ends and terminating near the, other end, an annular water passageway entirely surrounding the steam passageway, a water inlet pipe and a water outlet for the water passageway, a steam inlet con nected to the inner tubular member of the steam passageway, and a steam outlet leading from the outer tubular member to the water inlet pipe and opening into the same in advance of its connection to the water passageway.

In testimony whereof I have affixed my signature in presence of two Witnesses.

WILLIAM A. GIBSON. lVitnesses:

MARY E. CoMnGYs, H. V. GIBSON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner 01 Patents, Washington, D. 0.