US1776369A - Superheater for steam generators - Google Patents

Description

Spt. 23, 1930. R. PATON SUPERHEATER FOR STEAM GENERATORS Filed Oct. 1, 1925 3 Sheets-Sheet 1 m E N M T T A Sept. 23, 1930. R. PATON SUPERHEATER FOR s'i'mm emmnruroas 5 shuts-sheet s Filed Oct. 1 1925 ATTORNEKS Patented Sept. 23; 1930 Bonn er eron, or: oaano imnn, unan'ioimseow, SCOTLAND, ASSIGNOB'IQ T311 3A3- .coox & WILCOX ooivrrnnzonisnrou vs; unw JERSEY, A1 CORPORATION, on NEW FR E? 1 1 Isurnnnnnrrnitfro zf STEAM. GENERATORS Application filed ca e 1.1 1925", Serial No.- 59,784, amrmsreat rrita n aura-1w.

,;This invention: relates. to; steam super? heaters n which a largezdecrease of pressure of the steam passing through the superheater is avoided, and: the invention will be understood from the description: in connec tion;;with the? accompanying drawings,uin

which Fig. l is a Verticalvsection through a T steam boiler in connectioniwith which an illustrated embodiment a of the'invention" is shown; Fig. 2 is a front'vi'ew ofthe same 7 partly :brokenaway; Fig; 3qisa view similar to Fig. ,1fshowing a modification; and Fig.4 isra fro'ntyiew similartoi'Figl2.

* lathe drawings; reference-character .10 indicatesiabank oft'ubes Ofai Wa'tBIrtUbBbOilGr whichiterminates inheaders' ll and 12 and are: installed above a'furnaoe of aboiler so H a as to becontactedbythe hotgasesorproducts ofcombnstion from the furnace. The steam and water drum" 13. o-f'ra usual. type is con-'' nected by means of? tubes l and 15' to the headers :11 and 12;. the'tu'bes l' being interp'osediinrthe path ofthe' hot ga'sesyaslindi-v dated:

, As illustrated-in the accompanying draw ings,- the improved 'superheaterfis installed in thevg'as passage "that is provided above the tubes :14; butiit willbe understood: that this 'is'for illustrative purposes; as the superheater itself may be installed in-other locations.

Saturated steam pipes'16-and 16 lead from the fsteam'tspace" near therespective. ends of I the d'rlum'l'3..toiupper headers' l liand 17 of the 'superheater which i are diirided. into sec,

tions by; partitions 18' 187,!w'hich sections will be termed entry and exit sections-,respec H 'tivel'ya Lowert-superheaterflheaders19 and 1-9. are connected 'by sets :bfxtubes 201 and 7201 tofiithe fentrynsec tions ofjheaders '17 and 17 and by: setspf: tu.bes 2O .:and 20 to the exit sections of headers 17 and 17'. The tubes connecting theheaders 17 and 19 may be provided with one or more reverse bends and these tubes constitute the tubes of the superheater, being located in the superheater space of the boiler so that hot gases will contact therewith. Nipples 21 and 21 connect the exit sections of headers 17 and 17' to a comwhich'the superheatedsteam pipe;25 leads to anengine or other place wher'ethesteam .islto-beused. p

-' The-saturated steam from the "steam space ofthe drum 13'passes, as'shoWn by the arrows onthedrawings, through pipes 16 and 16to 'the'entry sectionsof the headers-17; and 17;, thence; through the tubes 20 and to :the headers 19 and .19, througli the tubes 20 and 2O 'Lto the exit sections ofheaderS l7: and

17; through the: nipples '21 and 215 to the steam enters the superheater headers at a plurality of points andftrav'elsin multiple paths through'the heatingrspace thereby 'securing an evenvdistribution of the: steam be- 7 tweenthe superheater tubes with alower fric-v tional resistance to-the; flow of steam through the superheater" than would be obtainable with the steam entering the superheat'erata single point; 1 r

a In the'modi'fication shown iniFigswd and 4," theisa-turatedvsteam pipes-36 :and 36 lead from the steam space-near therespect-ive ends of the drum 13" to the entry: sections of the upper headers 37 and 37 of the superheater whichwareqdividediintoentry and exit sec ti'o'ns, asi-above describedainconnection with vided into entry.- and Exit sectionszby means of partitions 40'and 40.

may be provided with one or more. reverse bends,' lead" from the entry sections, of head'- ers 39 and 39 to the lower headers 43 and 43 ofthe super-heater. Similarsets ofsuper; heater tubes 42,; and 42 in the same" plane, lead from the headers 43 andbto the exit sections of'liea'ders '39 and 39'. Sets of tubes 44' I and 44" lead from the entry sections' of headersifl and37-to:headers 45" and'45 which are shorter than the i headers? 43' and 43. Sets ofssuperheate'r tubes 44 Jand 445" similantoxsetsi andAf-lead'fifnomethewheadsi 10 i :Sets of up hea er tubl di and. w i h it ers'45 and 45' in the same plane to the exit sections of headers 37 and 37. Nipples 46 connect the exit sections of the headers 37 and39, and nipples 46 connect the exit sections of headers 37' and 39. Tubes48 lead from the exit sections of headers 37 and Y37 to a header 49 from which-a saturated steam pipe 50 leads to a steam engine or other place where thesteamisto be-used,

g, for withdrawing 4e .LYIn' zepemtiom; saturated steam passesff through thepipes scene 36? from the drum 13 to the entry sections oftheheaders 37 and; 37 where the steam divides, part ofit pass ing through .thenipples 41 and 41" to 'the.

entry sections of the headers 39 and,39.'. The

steam then passes from the entry sections of the'respective headers 37, 37, 39and 39 in parallel through thesuperheater tubes 42, 42, 44 and -i44-:to theheaders 43, '43*,- 45' and 45, thence through thesuperheater tubes 42 42 44 and 44 1to the'exit sectionsof the headers 37, 37",39 and'39; The

steam entering the exit sections oftheheaders 39and-39f passes through the nipples 46an'd 46' into the'exit sections of the headers 37ai1'd'37 uniting with other superheated steam therein, and all of the superheated disposed upper headers and lower headers' connected by tube's,"a plurality of saturated steam inletsto .said upperheaders, and'a oommon'outl'et',forfsaidupper headers; In a steam superheater, horizontally disposed upper" headers and lower headers connectedby tubes, said-upper headersbeing divided into sections, a plurality ofslturated steam inlets to. said upper headers,'andmeans for withdrawing superheated steam from saidrupper headers 1; 4.. In a steam "superheater,- horizontally r disposed upper headers and lower headers connected by. tubes, a pluralityof saturated steaminlets to said upper headers, and means for causing steam to travel in opposite direc;

tions in difl'erentbnes of said'tubes, I .5.QI11 a steam. superheater, horizontally disposed upper r headers and, lower," headers connected by tubes,- 1 a plurality of saturated Steam: 2 inlets "to said 2 upper :headers, and means for, causing. steannto travel in one direction through tubes near oneend of saidthrough tubes nearthe other ends thereof.

headers and in the opposite direction 6. Ina steam superheater, horizontallydisposed upper headers and lower headers connectedby tubes, a plurality ofsaturated steam inlets to said upperheaders, and means for causingsteam to passthrough said tubes from said upper headers to said lower headers and back again. I r s 7."In a steam superheater, horizontally disposed u per headers and lowers headers 1 connected by tubes,,a plurality of saturated steam inlets to'saidupper headers, said upper headers being divided-into sections and means for conducting steam' from one section to alower; header and thence to another section of said upper header; I .8. In asteam superheater, horizontally disposed upper headers and lower headers vconnected by tubes, a plurality of saturated steaminlets to said upper headers, and eans to pass steamabetween saidheaders in a plural-ity 'oit pathsin parallel. f

9.- In a superheater, a plurality .olfaligned steam inlet 'headersjeach dividedinto' sections, groups of superheatertubes each group being connected in' parallel respectively to'a section of said-headers, headers to which said groups of tubes are connected, and a group a of tubes from'eachofsaid last named-headers each group leading to another section of said aligned headers and an outlet header connected to all of said last-named sections.

10. 111 a superheater for a steam-boiler having afsteam and water drum, inlethead a ers substantiallyparallel to said drum, a-plurality of saturated: steam inlets from said drum to :said headers, and a superheated steam outlet from s'aid 'superheater at=sub-- stantial-ly the same level as said inlet headers.

11.;In a superheater for a steamlboiler having asteam and water drum, inlet head plurality of saturated steaminletsfromsaijd drum to said headers, a. row 'ofreverse bend tubes connectedto said headers. located in a single gas path, and a superheated steam outy. f I let from saidsuperheaterat substantially the same. level'as said inlet headers,

127111 a T11PeThater fora steam boiler ers substantially parallelto' said drum, a

having asteam-sand water drum,;said super-. heater-I com-prising'headers. and tubes; and formed in Iaplurality of sections subjectedto the same heating gases, are means toconduct steam separately from the drum to the tubes in each of said sections.

ROBERT arons

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