US827203A - Water-circulating apparatus for steam-boilers. - Google Patents

Description

No- 327,20s. PATENTEDJULY 31,1906.

- J. N{BARNU M.

WATER OIRGULATING APPARATUS FOR STE-AM BOILERS.

APPLICATION PILBPYSEPT. 2a. 1905.

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Specificqtip of Letters Rettmt. e eee e tee eee e. 0. e ett ve e I Patented. uly 31 1996 Q? t? whem it "my en e 9f the feedrweter, the ifeu e i h end W t? .eet eh e ng p o u ed y the eelnhi e n e heile et f ed-We r P r fier hite e e e hee e end Wh el e se es hiits eetieh te edue e ap d e eele i Q Wete in th heifer h eelid W ie e m he eedime t in a b i e enter y Weyv e h f e -w t et p- Ply, end e fore they ust eithe b reme ed b f re he nt r he'hei t r ee e- 'jggslted therein; With this invention a Cireu eti h is Pl'QY d d Wh on in through the purifier, andhenpe any impurities et em v at s t y he eet d 511d remeved eubeeq ht y- A p rt e e ventege o h is tha i el t e Who b il r el n e isp nse w t t e te f h eld m dr r m a su h, e ilit sj ee e te generatqr in addition to the other parts of the h f r- V It is known that a rapid circulation in Weterbe boiler e eel ed y ed n e ee being her eter zed'ee he li of e' t' 'rrt h he ler- It es? be n feu y expe men at e v y f W ter o w milee P hee in he ubular ystem o bl the fi e n y e th heile 'in he'e 'eb etptiem a d t ei ee e eh e e m impe n he eeethe d f e tehee n tempet u e e ween e he giviug and heatateeeiving elements thatis,

"the greatenthe' temperature of the ater Q1 the newe t eppre h ha of e the h t' eter the eeee ity for pid e e -e Such circulation also reduces the liebilitybf sudden expansipu and eontracti qn tap a minill end e ects he mee p ett t'eWe te line obtainable in e bei er f t e l n ide e eenneeti t een these s Qt eIIW e h e hro gh the ube? Qt h boiler,' and said connection has g sipher tion lev l an ny ex essive flu'etue i Thi in tiqh ev -id he tiete e y'fif any Steie -epe e. f r the t r ef imp ties 'wh eh my enter the. b iler; be'eet'ee such spate "sleitr eete st hat mi eh.tr'ehh he thr ilefb etteet vee eee 9 he h il Yetitieh e y pert .e he 'he lefte tfih it duty in steam 'eh te eh he eilt e ion' e effee ed by m ehe Qt Wh eh ehde e e ree hy d tee 111 te h ete eh the ee ereteeee- Ve y editg a heating thud pun ing de pettie'ted eeteid'e h flet. 'Sue.,g1evic e ieht y t due e ew nd de' et h'ed h h t d Stat le Pe e e 1775 eli t e 'v tie 1e t letie ed n' eilhe i e fe d ete he t t nd lti er e m- Pti ee e y iid e ee'eel 6, Wjeh; wth i 'e e 7 terms Ott eee'ihg 9 theheetet. At the b t i e ed meht he hher '1 teem which a mttte eeetrt ttbmeht wat an he l 1 'e ei p ee p t te wt fe depee te et tetl we' i t't e zh' h P pe 2 W e e e de i'ed- Theffeedwtte t le? .3 ee'd iigt the heat r, s ef u fi eh eepeeity t s pp y the bj le't"- T e'h z Weter P p 1. is 'e e t e e t e peei teh t he fe d-We er he t tl lei ee lytq a1 o hetiefth t! l t be er Th f Wate is d cha e hlbl glltl e few 1 which is eh e 'etl tr tm ed I ieh "ente s thr the 'h twejter pip injecting b hfeed e d ee g'we te o ,e' e e t Pl t '0, whi h e e fi e it eter end m k e't e die easy. The W v It' r the tei s eer he-tel? 1 f the ylin e endd w thidl ght he W eh 'e id eyl hder d he outer ftet" Wh ekee en "eptfet e thro gh' he' intlet t, w'hi h t een a h he tehl t t e el hef eh p 1'i hd' e the the ib i l t will be etieed thle ttl l P eit Q he eyl' hdet 9 i eil'tlt enil the 9 the t be 15, Wh h e ten s nto h ey locity of the water in its upward course is greatly reduced, which favors the dropping of sediment in the quiet space 11. This construction is substantially that shown and described in my patent above referred to.

The boiler is of the usual Stirling type, comprising an upper drum D, into which the feed-water enters, connected by tubes T to the lower drum B, which is connected by sets of tubes T to the pair of steam-drums O and C. The drums C and D have steam connec tions S, and the drums C and C have steam and water connections S and W.

It is to be noticed that the lower or mud drum B instead of being located beyond the bridge-wall of the furnace is positioned di rectly over the fire in direct line of the heat, and, in fact, the whole boiler is so placed that all of its parts will receive the most intense heat possible, since with the circulation provided by my invention it is unnecessary that any part of the boiler should be kept cool or relatively cool, all parts being utilized for generation. Heretofore the way these boilers were set about nineteen per cent. of the heating-surface of the boiler absorbed fifty per cent. of the heat, so that this nineteen per cent. of heating-surface generated fifty per cent. of the steam. By my invention and the rapid circulation induced thereby all parts of the boiler may receive a share of the heat and will receive nearer a proper proportion.

The hot-water pipe 14 leads from the middle drum 0 to the purifier, opening into said drum just below the low-water line and as near said line as possible. The supply-pipe 21 from the purifier dips into the drum D and has its outlet lower than the inlet to the pipe 14. Most of the steam generated by the boiler is generated in the first and second bank of tubes T, whereby the water-line of the first and second drums C and C is buoyed up and held at a higher level by the rising currents of steam, and any rise of water-level in sald drums Wlll accordingly lower the water-level in the drum D, producing a siphon action through the purifier in consequence of the greater weight of water in the leg 21. This action is automatic with the operation of the boiler and is assisted by the injection of water through the feed-water pipe 13 and nozzle 16, the result being that a relatively large quantity of water is drawn u through the pipe 14 and fiows down throug the pipe 21 after mixing with the feed-water needed to supply the loss by steam. A correspondi 'ing circulation is thereby produced down through the bank T and through the drum B and up through the banks T and the steamdrums C and O. In short, the purifier'and heater and its connecting-pipes form a siphon connection between the drums O and D,

which tends to keep the levels in these drums equal and sets up a continuous water circulation through all parts of the boiler. This circulation is augmented when the feedpump or injector is in operation, because the weight and force of the feed-water is being added to the longer leg of the siphon. This keeps up a continuous circulation of water through the entire heating system, including the lower drum B, which keeps all parts swept clean of deposits. The purifier performs its heating and purifying function as described in my patent above referred to; but should any matter escape collection in its first passage through the heater it is at once carried by the water-currents through the boiler and to the drum C, where it is picked up by the hot-water pipe 14 and carried again to the purifier. This action is continued as long as the boiler is in operation, whereby all the impurities are collected in the purifier-space 11 and no deposits can find lodgment in any portion of the boiler.

As above indicated, the circulation provided is decidedly advantageous in the generation of steam and greatly increases the eificiency. The change of the so-called muddrum into a steam-generator adds reatly to the efficiency of the boiler. A high temperature is maintained by reason of the circulation throughout all the parts of the boiler.

What I claim as new, and desire to secure by Letters Patent, is

1. The combination with a steam-boiler having banks of upright water-tubes terminating in headers at the top, of a feed-water heater and purifier having connections with the respective headers arranged to provide a flow of water through the heater and purifier from one header to another, and also having a feed-water supply.

2. The combination with a water tube boiler having drums at the upper ends of separate banks of upright tub es, of a siphon connecting said drums and embodying a purifying-chamber for the deposit of sediment.

3. The combination with a water-tube boiler of the Stirling type, of a feed-water heater and purifier located above the same and having a hot-water pipe connected to one of the front or steam drums and a su])- ply-pipe connected to the rear drum, said heater and pipes providing a circulation between said drums.

4. The combination with a furnace, of a steam-boiler having upper drums and a lower drum, connected by water-tubes, the lower drum being located in the combustion-chamber of the furnace and the upper drums being connected to each other by a siphon into which the feed-water is delivered.

'5. The combination with a water-tube boiler having separate drums connected by water-tubes, of a feed-Water heater and puri- In-testimony whereof I have signed my fier having a hot-Water pipe which dips bename to this specification in the presence of 10 low the Watier in the llilotierc'1 or bstfamil drum two subscribing Witnesses.

and a supp ipe W ic ips e ow t e water in the o fer. or rear drum, said heater JOHN BARNUM' and pipesprovidi-ng for a flow of water from Witnesses: the former drumto the latter, thereby in- JOHN A. BOMMHARDT, ducing a circulation through the boiler-tubes. SHIRLEY BOMMHARDT.

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