US1092592A - Feed-water heater for steam-boilers. - Google Patents

Description

E. PELTON & S. D. HOPTON.

EEED WATER HEATER EOE STEAM EOILEES.

APPLICATION FAILED MARL28,1Y913.

Patented Apr. 7, 1914 larly pointed out Iin the claims. AIn the accompanying drawings, Figure 1 FEED-waren HEATER ron. sweep-Bormes.

Specification of Letters Patent.

YPatenteol Apr. 7, 11914.

Appiieauon mea march as, 191s. serial n.\757,s55.

To all whom it may concern Be it known that we, ERNEST' 'Piemon and STANLEY D. HoProN, citizens of the United States, residing at Geneva, in the county of Ashtabula-and State of Ohio, have vinvented certain new anduseful Im rovements in Feed-Water Heaters for team- Boilers, of which lthe following is a speciication. f

Our invention. comprises an improved feed water heater and oil and vapor separator for steam boilers, and the invention is of especial utility in heatingthe supply waiter furnished to the main feed pum of the feed water system of a Steamship wit out causing the said pump to be air orV vapor bound. In other words the invention comprises an improved heater. adapted to be used as an auxiliary to the main heater of a feed Water system, thereby securing economy and greater efficiency in operation, all substantially as shown` and described and particuis a diagram showing the invention embodied in a feed water installation, and

Fig. 2 is a sectionalview of thev heater` and its immediate connections. Having reference now particularly to Fig.

1, A represents a hot well which receives the condensed steam from a steam engine on board a ship, and from which the wateris discharged by suitable apparatus as usual. Connected with' the hot well is a stand-pipe which furnishes a head for the water-in the hot well from which the feed water for the boiler is constantly supplied when it is "liver it to a heater the boiler.

not otherwise taken from the sea. Theeir and vapors rising 1n the condenser of the engine and which otherwise'might make the feedl Water system steam o r air bound, are

. also conveyed awa by the stand pipe.

In taking the eedl water from the hot well A, a main feed ump B is used to de! l before .forcing it into Our heater (represented by 2) is designedlto be used as an auxiliary to main heaterv QV and is placed yin the suction '-line of pipe 3, 3,

between thehot well A and pump B. 1

Heretofore andl so far as'we areA aware it has not been fo `nd practicable to heat the water to high temperatures on the supply side of the main feed pump and maintain a solid 'stream of water without seriously affecting the operation of the pump;

to jet exhaust steam into but with a heaterand separator of the kind herein ,set forth, the water can be successfully heated to a very high temperature as it comes from the hot well A and Vis delivered to the main`feed'pump B under the pressure of the head of water in the standpipe, vall without affecting the operation of the pum Thus it occurs that when the water is ischarged b pump B to the surface heater C and t ere further heated that` a materially lhigher temperature is obtained for the water. discharged into the boiler` than by use of the main heater alone as is the General practice. In fact, with our invention the water which is delivered to the pum may be heated to 200 Fahrenl heit or hig er before it is discharged into the main heater C which raises the temperature of the water still-higher (approximately to the temperature of the exhaust steam) before -it enters thel boiler, great economy in fuel consumption.

In detailour heater comprises a cylinder 2 having a short intake pipe 4 at its bottom connected with a coupling 'into which the water from the hot well is discharged by a short pipe 6. The coupling member 7 for pipe 6 supports a perforated pipe 8 which extends lengthwise into pipe -6 and is used the water in its passage through said pipe. A valve 9 controls tlev flow of exhaust steam which is obtained om the auxiliary'steam lines of the ship by a pipe 9 coming from the auxiliary steam connect-lon for main heater C. Cylinder 2 is also provided with a water' discharge pipe 10 which in effect is an extension of the discharge pipe 3 leading to 4pump B. Pipe 10 extends downwardly from the -upperhead of cylinderf2't'o` about the middle so that theA intakeend of said outlet pipe l0 isxbeneath the'lzone4 where air or uncondensed vapor would naturally accumu- -latewhen taken` into the cylinder vas occurs when the exhaustl steam is forced into the water lby jet pipe 8. f A shield 12 which divides the heater 2into an upper and alower chamber and which is of cup shape or coni- `calform`is supported by -a pipe 13 below and-a'bout the mouth of the said pipe 10, and vthis shield 'therefore forms something of a trap for sediment, but its main function is to guard against escape of air and vapors through pi e 10. In other words the water at the inta re end of suction pipe 10 will be guarded and kept free from dis- 40 the cylinder can be drawn olf through -the r,turb'ance by this shield from the action of the steam -jet `8 on the water, particularly as vent and relief for the air an vapors isy afforded at the top of this heater by a pipe 5 14 having one or more branches or elbows 15 connecting with pipe 14. The said pipe 14 extends to a considerable level above the normal head of water in the stand-pipe a, and may be provided with a valve at some oint in the line thereof if desired, but no va ve is shown as it is designed to leep the pipe 14 open to the atmosphere.` However, said pipe has an overflow pipe 16 (Fig. 1) connected therewithiat a point slightly below the normal head of 'water todraw off the'oil or other accumulations which rise to the top of the heater and enter pipe 14. It will be understood that in the course of operations more o'r less grease or-oil will accumulate in the steam and water connections, which ob- 'ectionable substances should be eliminated efore Areturning the .water of condensationto thel boiler. y

Other features are a valved clean-out pipe 17 at the side and topl of cylinder 2,-' and a valved sediment clean-out pipe 13 from shieldfor cup 12 through pipe 4 andthe bottom of coupling 5.y The shield- Vshould be" cleaned out occasionall or it will become filled with sediment W ich will be carried forward to the boiler. However, the location of the said shield at about the lmiddle of the heater and the relatively 1 narrow space between the shield and c linder wall helps materially to prevent sedlmentar accumulations from rising inthe -lower cliamber. to the overflow point into'said shield and the main ysedimentary deposits naturally gravitate to theV bottom of the cylinder,and this sediment gathering in the bottom of lvalved connection 19,/whereas the sediment 1n the pipe 6 can be removed through valved connection 20.` Therefore, this device also` serves as a water purifier. A

What we claim is: 1. A feed water heater for steamboilers comprising a cylinder havin a discharge pipe extending downwardly mto the same and rovided with meansvto produce a downward) flow of water in said cylinder before escaping through saidfpipe, in combination with a steam jet to heat the water iiowingto said cylinder discharge pipe, and a vent pipe cylinder, for the air and vapor. A v "2. An auxiliary heater for feed water opening'directly into the upper end of sald for steam boilers comprising a cylinder having a water intake connection, an outlet pipe extendin intosaid cylinder, a sediment trap and shie d to guard the mouth end of said pipe, and a discharge connection at the upper end of said cylinder for the air, vapor and oil which is trapped therein.

3. In a feed water heater for boilers, a cylinder having a water supply connection provided with a steam jet to heat the water v passing therethrough, a centrally located shield in said cylinder slightly spaced apart from the Walls thereof and subdividing said l cylinder into upper and lower chambers, a

water discharge ipe and a vapor discharge connection for t e up er chamber, and a valved connection for t 1e lower chamber to vpermit removal of sedimentary deposits.

4. In a feed water heater for boilers, a water receptacle having a water supply con`r nection at its bottom and a discharge pipe 4extending part way into the receptacle from the top, a shield about the end of said pipe having a pipe support adapted to draw ofi' accumulating sediment, and pipe connections with the top of said heater providing an esa vent pipe' for the air and vapors accumulating within said receptacle.

6.A feed water heating apparatus for `steam boilers adapted to be used on the suc-y tion side ofthe feed pump, comprising a- 'water receptacle having a water supply connection, a steam jet to heat the water, a water discharge connection, and a vapor outlet pipe opening directly into said receptaclel and extending, above the nornal head of water supply and being open to the atmosphere;4 A

In testimony whereof we aflix our signatures in presence of two witnesses.

ERNEST PELToN. STANLE'YDHOPTON.

Witnesses: X

C. D. ADAMS, v BLANCHE HUMrHREY.-

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