US1807088A - Equalizing feed means for water tube boilers - Google Patents

Description

May 26, 1931. F. c. GEDGE EQUALIZING FEED MEANS FOR WATER TUBE BOILERS Filed Oct. 5, 1927 2 Sheets-Shet 1 F. C. GEDGE May 26, 1931.

EQIjALIZING FEED MEANS FOR WATER TUBE BOILERS Filed Oct. 5, 1927 2 Sheets-Sheet '2 Patented May 26, 1931 i i I UNITED STATE-S PATENT; OFFICE FREDERICK C. GEDGE, OF PLAINFIELD, ILLINOIS EQUALIZILTG FEED MEANS FOR WATER TUBE BOILERS Application filed October 1927; Serial No. 224,072.

My invention relates to feed means for Figure 3 is a plan view on lines 33 of steam boilers and has particular reference to Figure 2; Y a feed pan for use with water tube boilers in Figure 1 is a vertical sectional viewon lines .which the water is fed into the feed pan and 1 of Figure 2; and Y passes therefrom in the form of thin sheets Figure 5 is a detailed sectional view on of water which pass over the edges of the feed lines 55-55 of Figure 2. pan and come into contact with the steam. Referring now specifically to the drawings, The feed water in this form is quickly heated a boiler shell 10 is shown'having a steamto substantially the same temperature as the header 11 mounted therein and also having 10 water already in the boiler, thus preventing a lower water header 12. An upper header injurious results caused by bringing cold feed 13 is also provided, the headers 12 and 13 Water in contact with the hot boiler surface. being connected by a plurality of tubes 1 1, 1 1

Another and further object of my invenand the headers 11 and 12 being connected by 1 tion is the provision of feed means in which a plurality of pipes 15, 15, a plurality of short hammering of the pipes, check valves and pipes 16 connecting the headers 11 and 13, the like, is prevented because the pipes used this combination forming what is usually for conveying the feed water into the boiler rm d the pr mary circuit in Water tube are kept sealed at all times, thereby preventboilers. A header 17 is provided which is ing the entry of steam into these pipes which connected with the header 12 by a plurality causes hammering of the check valves and of tubes 18, 18 which forms what is known as Water pipes and the like. the secondary circuit, it being usual. to intro- Another and further object of my invenduce the boiler feed water into the header 17. tion is the provision of a feed pan in which Mounted in the header 17 and extending the accumulation of mud, scale and the like, longitudinally thereof, is an elongated tubuis prevented in the boiler itself, thus renclerlar feed pan 19, suitably supported in the ing the boiler more efficient in steam producheader 17 above the usual water line 1n the tion. header 17 by brackets 20, 20 and-through Another and further object of my invenwhich inverted U-bolts 21, 21 pass so that -tion isthe provision of a feed water means the pan 19 is held in fixed position in the in which the entrained oxygen carried by the header 17. In mounting the pan "in the headwater is removed from the incoming feed er 1? it is necessary that the feed pan 19 be waterbefore it comes in contact with parts level so that the water draining therefrom of the boiler subject to oxidation, this result passes out with an equal volume throughout M being accomplished by feeding the water out the entire length of the feed pan 19. In each of the feed pipe in a thin sheet which coming end of the feed pan 19are steel heads 22, 22

in contact with the steam already formed in which are welded in position, thus effectively 7 the boiler, drives out the oxygen into the closing the ends of the feed pan 19. The upsteam as the temperature of the feed water per side of the feed pan 19 has a plurality 43 i raised, of elongated slots 23, 23 formed therein These and other objects of my invention through which the feed water passes from will be more fully andbetter understood by the pan 19 over the sides thereof and into reference to the accompanying sheet of the header 17 in sheet-like formation, thus drawings, and in which bringing the water into intimate contact with Figure 1 is a cross sectional view of the the steam in the header 1'? and raising its usual water tube boiler, embodying my intemperature to substantially the same devention; gree as that of the water in the boiler, and

Figure 2 is a longitudinal sectional view also driving the entrained oxygen out of the of the feed water pan and water connections water. The slots 23 are less in Width than employed in connection with my invention; the diameter of the feed pan, thus forcing the W) water to pass over a considerable surface of the feed pan as it flows therefrom.

A pair of feed water pipes 24 and 25 are provided, the said pipes 24 and 25 being welded to the feed pan 19 and have their ends projected into the feed pan and terminating. adjacent the bottom of the feed pan 19 so that thereisv suflicient clearance for the discharge of the feed water from the pipes 2% and 25 into'the pan 19. Pipe unions 26 are provided by means of Which-sections of the feed pipes are connecte d together in the usual manner.

In operation, the feed Water is fed into the n boiler through the pipes 24 and 25 in the usual manner, and is discharged into the feed pan 19 and out through the slots 23 over'thesides of the pan 19 and into the header 17 The feed pan 19 is filled with water at all times regardless of the rate of feed into the boiler, thus sealing the ends of the feed pipes 24: and 25 preventing steam from entering these pipes, flowing backward therethrough and causing a destructive hammering of the check valves and water pipes common in feed water systems for boilers. The feed.

water leaving the pipes feeding the feed pan 19, is discharged through the slots 28 which extend throughout the entire" length of the feed pan in thin sheets which pass over the surface of the feed pan 19 intermediate the ends thereof on each side of the slots 23 and downward into the header 17 and into the pipes 18. The feed pan 19 being level the water is discharged along the entire length of the feed pan-19 thereby equally distributed I throughout the entire series of water tubes 18 so that an unusual quantity of Water or load'is not thrown upon a particular section of the Water pipes 18, which is common with the feeding apparatus now in use. p

The feed pan can be removed from the boiler for the washing out of mud and dirt 1 which accumulates therein but because ot any withdrawal of these pipes away from the.

feed pan due to the contraction and eXpan-V sion of the parts of the b iler, and insures that the ends of the feed water pipes are always submerged in water to prevent the entry 7 into these pipes of steam from the boiler.

While I have described more or less pre cisely the details of construction, I do not wish to be understood as limiting myself thereto, as I contemplate changes in form and the proportion of parts'and the substitution of equivalents as circumstances may suggest or render expedient without departing from the spirit or scope of my invention;

I claim: r I

1. Water supply means for boilers comprising in combination, a feed pan extending longitudinally of the boiler above the normal water line thereof, having slots in the upper side thereof extending substantially the entire length of the feed pan, brackets upon which said feed pan is mounted, andlaj: feed water pipe extending into said feed water pan and termmatmg ad acent the bottom thereof,.the saidi feedwater pipe extending 7 into said feed pan in a vertical direction.

2: Watersupplymeans-for boilers comprising 1n combination, a feed pan circular 1n form andcl'ose'd' at each of its ends and hav-- ing-slots in theiuppe-r side thereof extending substantially throughout its entire length,

brackets secured to the header for supporting said feed pan" above the normal; water lineof the boiler, and water supply; pipes extending into said feed pan and terminate ing adjacent the bottom thereof. 7

3. Water supply means for boilers com- Y prising in combination, a feed pan circular in,

form and closed at each of'its ends andliaving slots in the uppcrxsid'e thereof extending substantially throughout" its entire length", brackets secured to-the header for support- .ing said feed'pan in-the' steam space 111 said boiler, and water supply pipes extending into .I

said feed pan-and terminating adjacentzth'e' bottom thereof, the said'slots being of less width than the diameter of the feed pan;

4; A boiler having a. water distributing member extending longitudinally of'a boiler drum, in the steam space thereof, said memberhaving spillway openings'for uniformly discharging the feed water throughout the length of said drum in sheet-like form, means supportingsaid member in the drum, and a water supply pipe whose outlet terminates atan elevation lower than said spillway open: ings.

5. A boiler having." a water distributing member extending longitudinally: of the boiler drum and'havingslots in the upperside thereof, the said slots being less in width than the diameter of the said water distributing member and formingspilllways' for uniformly discharging'the feedwat'er through out'the length ofsaid drum, means support ing saidmember in saiddrum above the-water line thereofganda water supply pipe ex tending into .said'member and terminating below the level of the spillway openings;-

Signed at Joliet, Illinois, this QStlr-day of September, 1927;

FREDERICK 3. (E

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