SE176470C1 - - Google Patents
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- Publication number
- SE176470C1 SE176470C1 SE176470DA SE176470C1 SE 176470 C1 SE176470 C1 SE 176470C1 SE 176470D A SE176470D A SE 176470DA SE 176470 C1 SE176470 C1 SE 176470C1
- Authority
- SE
- Sweden
- Prior art keywords
- fireplace
- chamber
- gases
- flue gas
- fireplace chamber
- Prior art date
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Description
Uppfinnare: P I-1 Koch Prioritet begard Iran den 26 december 1952 (Amerikas Forenta Stater) Foreliggande uppfinning Unfair sig till med overhettare forsedda rOranggeneratorer, vilka ha en eldstadskammare med angbildningsror utefter sina vertikala vaggar och tak och aro anordnad'e att eldas medelst brannaranordningar i eldstadskammarens framva.gg samt ha en rokgasbana i forbindelse med en bakre del av eldstadskammaren och innehallande en konvationsoverhettare. Inventor: P I-1 Koch Priority Requested Iran on December 26, 1952 (United States) Present Invention Unfair to overheated tube generators, which have a fireplace chamber with forming tubes along their vertical cradles and ceilings and arranged to be fired by fire devices. in the front of the fireplace chamber and have a flue gas path in connection with a rear part of the fireplace chamber and containing a convection superheater.
Overhettningstemperaturen Fran konvektionsoverhettaren tenderar att stiga eller falla med Rad respektive minskad belastning och anordningar bara darf5r vidtagas, vilka kunna reglera overhettningstemperaturen i beroende av belastningen. Det hr kant att anordna en forbigangsledning, genom vilken heta gaser kunna ph. ett kontrollerbart satt ledas forbi konvektionsaverhettaren titan att komma i beroring med denna och det ar kant aft anordna angtempereringsanordningar exempelvis av en typ, vid vilken vatten insprutas i en kontrollerbar mangd i angan. Med dessa anordningar kan overhettningen regleras genom att sanka overhettningstemperaturen Aid hogre belastning, men det iir mer onskvart aft reglera overhettningen genom att haja overhettningstemperaturen vid lagre belastningar och detta kan gams med anordningar [Or att fran ragasbanan uttaga ragaser, som kylts genom beroring med konvektionsuppvarmningsytor, samt aterinfora dessa rokgaser i eldstadskammaren. The overheating temperature From the convection superheater tends to rise or fall with Rad respectively reduced load and devices only need to be taken, which can regulate the overheating temperature depending on the load. It is advisable to arrange a bypass line, through which hot gases can ph. a controllable means is passed past the convection superheater titanium to come into contact with it and it is possible to provide steaming devices, for example of a type, in which water is injected in a controllable amount into the steam. With these devices the overheating can be regulated by lowering the overheating temperature Aid higher load, but it is more inconvenient to regulate the overheating by raising the overheating temperature at lower loads and this can be done with devices [Or that from the ragas track and re-introduce these flue gases into the fireplace chamber.
Dot Or mojligt att infora de aterledda kylda ragaserna i eldstadskammaren sO. att en effektiv blandning med de aterledda gaserna sker Over eldstadskammarens hela volym. Ex- empelvis kunna de kylda ragaserna blandas med forbranningsluften till brannarna. Genom en sadan atgard kommer den proportion ay varmen, som upptages av eldstadskammarens vaggar, att reduceras i jamforelse med den proportion varme, som upptages av overhetta- ren, eftersom de RV forbranningen joke verksamma gaserna i forbranningszonen komma att reducera den maximala temperaturen i eldstadskammaren. Denna temperaturminskning vet man atstadkommer en relativt stor minskning am det varme, som stralas mot eldstadskammarens vaggar, och f5ljaktligen kommer det varme, sorn genom straining icke overfOrts till eldstadsvaggarna, att aterfinnas i gaserna, som senare komma i beroring med overhettaren. Dot Or possible to introduce the returned refrigerated gases into the fireplace chamber sO. that an efficient mixing with the returned gases takes place over the entire volume of the fireplace chamber. For example, the cooled ragas can be mixed with the combustion air for the burners. By such a measure the proportion of the heat absorbed by the cradles of the fireplace chamber will be reduced in comparison with the proportion of heat absorbed by the superheater, since the RV combustion joke gases in the combustion zone will reduce the maximum temperature in the fireplace chamber. This decrease in temperature is known to bring about a relatively large reduction in the heat radiated to the cradles of the fireplace chamber, and consequently the heat which, by straining, is not transferred to the fireplace cradles, is found in the gases which later come into contact with the superheater.
Vid en roranggenerator med overhettare ay det slag, som hat en eldstad forsedd med huggenereringstuber utefter sina vertikala vaggar och tak saint Or anordnad att eldas medelst brannaranordningar i framvaggen, varj amte en r8kgasbana star i forbindelse med en bakre del av eldstadskammaren samt innehaller en konvektionsoverhettare, forestas enligt uppfinningen en annan atgard. Vid en sadan reoranggenerator utrnarkes forfarandet for att reglera overhettningstemperatur enligt uppfinningen darav, att gaser uttagas fran ett stalle i rokgasbanan eller overhettaren, och att sh.- lunda uttagna gaser injiceras i eldstadskammaren i horisontell riktning bakat genom vertikala slitsar parallellt med eldstadskammarens vaggar nara dessa och intill framvaggen for att darigenom aka forhallandet mellan den varme, som upptages ay overhettaren, och den marine, som upptages ay angbildninigen. At a rorang generator with superheaters ay the kind, which has a fireplace equipped with chopping generation tubes along its vertical cradles and roof saint Or arranged to be fired by means of fire devices in the front wall, each amte a flue gas path stands in connection with a rear part of the fireplace chamber and contains a convection, according to the invention another act. In such a reorang generator, the method for controlling overheating temperature according to the invention is characterized in that gases are taken from a stable in the flue gas path or superheater, and that sh- thus taken gases are injected into the fireplace chamber in horizontal direction baked through vertical slits parallel to the vaginal slits. next to the front wall to thereby aka the ratio between the heat absorbed by the superheater and the marine absorbed by the superheater.
Genom detta forfarande astadkommes en fardrojning i blandningen ay aterledda gaser med de nybildade r5kgaserna av hog temperatur, pa grund av att rakgaserna inforas i form av skiktartade strommar Over de angivna varmeupptagande omradena vilken algard ar motsatt atgarden att infora aterledda gaser i eldstadskammaren pa sadant satt, att de helt och hallet blanda sig med eldstadskammarens innehall i syfte att sanka eldstadskammarens temperatur. Harigenom behover 2--- — det icke bli overhuvud taget nagon eller nagon niarkbar sankning .av flammornas maximitemperatur, och foljaktligen firms det ingen risk for osaker tandning eller and& lag hastighet av flammans utveckling. Eftersom dessutom de aterledda gaserna icke inforas i eldstadskammaren genom brannaroppningarna,- aro f5rhallandena vid brannaroppningarna opaverkade. Harvid astadkommes varken en -vasentlig okning av hastigheten hos den inga.ende bransleluftblandningen eller behovet av att andra brannaroppningarna f5r att bibehalla konstant hastighet och ingendera and7_ ringen Or onskvard. This process results in a displacement in the mixture of recirculated gases with the newly formed flue gases of high temperature, due to the fact that the shaving gases are introduced in the form of stratified streams over the specified heat-absorbing areas which are opposite to the recirculation of recirculated gases in the fireplace chamber. that they completely mix with the contents of the fireplace chamber in order to lower the temperature of the fireplace chamber. As a result, there is no need for any or any appreciable reduction of the maximum temperature of the flames, and consequently there is no risk of improper ignition or the rapid rate of flame development. In addition, since the returned gases are not introduced into the fireplace chamber through the fire openings, the conditions at the fire openings are unaffected. This does not provide a significant increase in the velocity of the incoming fuel-air mixture or the need for other fire openings to maintain a constant velocity and neither to breathe.
De nybildade rokgaserna hoptrangas genom de aterledda gaserna till en mindre tvarsektion an titan Aterledning av gaser eller riled alerledning av gaser via brannaroppningarna. Hoptrangningen av gaserna till en mindrestromningsarea, under det att andra forhallanden Oro oforandrade, minsliar arean hos stralningskallan i eldstadskammaren. The newly formed flue gases are condensed through the recirculated gases into a smaller transverse section called titanium Recirculation of gases or riled conduction of gases via the fire openings. The convergence of the gases into a minor flow area, while other conditions Oro remain unchanged, reduces the area of the radiation head in the fireplace chamber.
Genom fOreliggande forfarande astadkommes, att stallen med aterledd gas bildas mellan de nybildade rakgaserna och eldstadskammarens angbildningsvOggytor trots m5jligheten, att eldstadskammaren kan sakna trattbotten, och vidare trots att man, eftersom de nybildade roligaserna sakna tendens att i huvndsak stromma uppat i eldstadskammaren mot ett ovre utlopp, icke eller joke i storre utstrackning kan utnyttja deras hastighet uppat far att Abu de aterledda gaserna uppat till beratring med eldstadskammarens vaggar mot dessa aterledda gasers stravan att genom sin storre tyngd sjunka i eldstadskammaren. By the present procedure it is achieved that the stables with recirculated gas are formed between the newly formed shaving gases and the furnace chamber's formation wall surfaces despite the possibility that the fireplace chamber may lack the funnel bottom, and further despite the fact that the newly formed funnels have no tendency to flow upwards into the fireplace chamber. , not or joke to a greater extent can utilize their speed up father that Abu the returned gases up to consult with the cradle of the fireplace against the punishment of these returned gases to sink through its greater weight in the fireplace chamber.
Uppfinningen beskrives i det efterfoljande narmare med hanvisning till bifogade, delvis schematiska ritning. The invention is described in the following description with reference to the accompanying, partly schematic drawing.
A ritningen visar fig. 1 on langdsektion av en anggenerator med .6-verhettare enligt uppfinningen, fig. 2 en sektion efter linjen 2-2 i fig. 1 och fig. 3 en sektion av en del av anordningen enligt uppfinningen efter linjen 3-3 i fig. 1. In the drawing Fig. 1 shows a longitudinal section of a steam generator with .6 preheater according to the invention, Fig. 2 a section along the line 2-2 in Fig. 1 and Fig. 3 a section of a part of the device according to the invention along the line 3- 3 in Fig. 1.
En anggenerator med overhettare enligt fig. 1-3 innefattar en eldstad 1, vars omgivande ytor, inbegripande Ink, golv onk vaggar, aro forsedda med angbildningsror forbundna med ett cirkulationssystem far ett arbetsmedel. Eldstaden ar anordnad for horisontell eldning genom ett antal brannare 15-18 anordnade i en framre eller brannarvagg 3, sà att forbranningsgaserna, under det anordningen arbetar, riktas mot ett rokgasutlopp 4, vilket leder till en gaskanal 4A, i vilken Or anordnad en konvektionsoverhettare 5 f5r att overhetta den genom angbildningsroren genererade angan. A steam generator with superheater according to Figs. 1-3 comprises a fireplace 1, the surrounding surfaces, including Ink, floor onk rocks, are provided with steam forming pipes connected to a circulation system for a working means. The fireplace is arranged for horizontal firing by a number of burners 15-18 arranged in a front or burner wall 3, so that the combustion gases, while the device is working, are directed towards a flue gas outlet 4, which leads to a gas duct 4A, in which a convection superheater 5 is arranged. to overheat the steam generated by the steaming tubes.
Angbildningsraren i aggregatet kommunicera med en averpanna 27 oeh en underpanno. 28. Vissa angbildningsror utgara ror 29 i eldstadsgolvet, vilka stracka sig till kylare 30 1 brannarvaggen. Fran denna kylare stracka sig angbildningsror 31 utmed brannarvOggen och darifran utmed eldstadens tak 2 till pannan 27. Ror 52 i varje sidovagg stracka sig mellan en nedre kylare 50 och en byre kylare 51, pa lampligt satt farbundna med respektive pan-nor 28 och 27. The steam generator in the unit communicates with an aver boiler 27 or a sub-boiler. 28. From this cooler, steaming tubes 31 extend along the burner wall and from there along the fireplace roof 2 to the boiler 27. Tubes 52 in each side cradle extend between a lower cooler 50 and an additional cooler 51, suitably connected to the respective panels 28 and 27.
Di anordningen arbetar, traffa rokgaser, som stromma inuti eldstaden 1 mot utloppet 4, forst en grupp angbildningsror 33, vilka straeka sig sinsemellan atskilda tvars Over utloppet direkt frail underpannan 28 till overpannan 27 for att astadkomma ett galler framfar overhettaren. Gasstrommen passerar raren 33 vinkelrfitt mot dessa och sedan forbi de vertikala roren i averhettaren 5 for att na en grupp angbildningsrar 34 anordnade mellan skarmar 35 och 36, vilka bilda en nedatriktad gaskanal. When the device is working, flue gases, which flow inside the fireplace 1 towards the outlet 4, first form a group of steam formation pipes 33, which extend separately across the outlet directly from the lower pan 28 to the upper pan 27 to create a grate in front of the superheater. The gas stream passes the tube 33 angularly towards them and then past the vertical tubes in the superheater 5 to reach a group of steam forming tubes 34 arranged between screens 35 and 36, which form a downwardly directed gas channel.
Uppvarmningsgaserna stri5mma uppat vid bottnen av den nedatriktade gaskanalen och genom en bakre gaskanal 37, i vilka en bakre rorgrupp kan verka sasom fallror direkt forbindande pannorna 27 och 28. Vid overanden av den bakre gaskanalen 37 vanda gaserna nedat inuti en hakre kammare 38 och stromma sedan nedat genom tuberna till en luftfarvarmare 9 och vidare till en kanal 8 fOrbunden med inloppet till en flat 6 f5r astadkommande av konstgjort drag. The heating gases flow upwards at the bottom of the downwardly directed gas duct and through a rear gas duct 37, in which a rear rudder group can act as traps directly connecting the boilers 27 and 28. At the upper end of the rear gas duct 37 the gases wander down inside a hook chamber 38 and then flow down through the tubes to an air heater 9 and further to a duct 8 connected to the inlet to a flat 6 for producing artificial draft.
Luftforvarmaren 9 visas med tre tvargaende luftkanaler. Luft inkommer i en forsta luftuppvarmningskanal 40 fran luftintaget 44, fortsatter genom kanalen, vander inuti ett rum 43 i holjet och striimmar sedan i motsatt riktning genom en mellanliggande kanal 41. Den forandrar ater riktning i ett rum 45 och strommar genom en sista kanal 42 och sedan nedat genom en kanal 46 till en. kanal eller kammare 47 under eldstadsgolvet. Darefter strommar luften framat till en andra luftkammare eller blasterlada 48 for brannarna 15--18. The air preheater 9 is shown with three transverse air ducts. Air enters a first air heating duct 40 from the air intake 44, continues through the duct, travels inside a space 43 in the housing and then flows in the opposite direction through an intermediate duct 41. It changes direction in a space 45 and flows through a last duct 42 and then descended through a channel 46 to a. duct or chamber 47 under the fireplace floor. Then the air flows forward to a second air chamber or blaster charge 48 for the burners 15--18.
Far att vidmakthalla en forutbestamd Augtemperatur vid utloppet frail overhettaren Ras varmeupptagningen hos angbildningsroren i eldstadens omgivande ytor vid avtagande angbildning genom att ett ratkga.saterledningssystem innefattande rokgasflakten 6 bringas att verka. Flaktens utlopp 10 star genom en kanal 11 i farbindelse med en skorsten 24 och genom kanaler 11-14 med eldstaden, vanid spj011 26 och 25 Oro anordnade vid inloppet till skorstenen respektive en kanal 12. Kanalen 12. stracker sig under anggeneratorn mot brannarvaggen och Or ansluten till den tvarga' ende kanalen 13, fran vars andar kanalerna 14 fora uppat vid lagen nara eldstadens sidovaggar respektive motsatta sidor av brannarna 15-18. De vertikala kanalernas 14 ovre andar sta i forbindelse med varandra genom en horisontell kanal 19, vilken utefter hela sin langd star i forbindelse med en horisontell utloppsspalt 20 for att aterleda rakgas ge- — —3 nom brannarvaggen nara intill taket 2. De vertikala kanalerna 14 star pu liknande salt I forbindelse med vertikala spalter 21 respektive 22 nara eldstadens sidovaggar, sa:som sarskilt angives i fig. 3. De vertikala spalterna 21 och 22 kunna vid sina avre andar sta i forbindelse med den horisontella spalten 20, men vid den visade anordningen ãr spalten 20 skild fran de vertikala spalterna 21 och 22 och .spjall 23 aro anordnade i de byre andarna av de vertikala kanalerna 14 sa att fordelningen av de aterledda gaserna kunna regleras genom att stoppa gastillforseln utmed eldstadstaket. Maintain a predetermined Augment temperature at the outlet from the superheater. The heat absorption of the steam formation pipes in the surrounding surfaces of the fireplace is reduced by decreasing steam formation by actuating a coil duct system comprising the flue gas flue 6. The outlet 10 of the flue stands through a duct 11 in communication with a chimney 24 and through ducts 11-14 with the fireplace, usually at the inlet to the chimney and a duct 12, respectively. connected to the transverse end channel 13, from whose spirits the channels 14 lead up to the law near the side walls of the fireplace and opposite sides of the fires 15-18. The upper spirits of the vertical channels 14 communicate with each other through a horizontal channel 19, which along its entire length is connected to a horizontal outlet gap 20 to divert shear gas through the burner cradle close to the roof 2. The vertical channels 14 star pu similar salt In connection with vertical columns 21 and 22 near the side cradles of the fireplace, respectively, as indicated in Fig. 3. The vertical columns 21 and 22 may in their lower spirits be connected to the horizontal gap 20, but at the shown the device 20 is the gap 20 separated from the vertical slots 21 and 22 and slats 23 are arranged in the upper spirits of the vertical channels 14 so that the distribution of the returned gases can be regulated by stopping the gas supply along the fireplace roof.
Rakkgasflakten 6 suger salunda relativt kalla rokgaser fran luftforvarmarens utlopp genom kanalen 8 och matar ut dem i kanalen 11. Genom paverkan av spjallen 26 kan gasstrommen till skorstenen 24 begransas, varvid salunda trycket i kanalen 11 Ras och medfor att en del av rokgaserna strommar in i Aterledningssystemet, reglerad av spjallen 25. The shear gas flue 6 thus sucks relatively cold flue gases from the air preheater outlet through the duct 8 and discharges them into the duct 11. By the action of the shutters 26 the gas flow to the chimney 24 can be limited, whereby the pressure in the duct 11 is reduced. The return system, regulated by the damper 25.
DA man onskar Oka averhettningstemperaturen kan man tillgripa rakgasaterledning. De aterledda rokgaserna, som inforts i form av skikt genom spalterna 21 och 22 mellan brannarna 15-18 och eldstadens sidovaggar eller genom spalten 20 mellan brannarna 15-18 och taket 2, strommar over och i stort sett parallellt med narliggande eldstadsytor far att bilda skikt over dessa sa att minskad stralningsvarmeupptagning astadkommes i dessa ytor. De aterledda rokgaserna, som inmatats tall intill och striimma i stort sett parallellt med dessa ytor, stora mycket litet, orn ens ails, forbranningsprocessen i eldstaden. Sadan minskad varmeupptagning minskar angbildningen i angbildningsroren, varvid ytorna kylas och astadkommer att en storre varmemangd medfores fran eldstaden i den okade gasmangd, som blir foljden av den aterledda gasstrommen Pante de nybildade forbranningsgaserna. Den starre gasstrammen och varmeinnehallet hos de gaser, som stromma forbi averhettaren 5, astadkomma storre var- meupptagning i overhettaren och hogre hugoverhettningstemperatur an som skulle hli re- sultatet utan rokgasaterledning. Genom att reglera mangden av aterledda rokgaser me-deist spj Allen 25 och 26 och deras fordelning medelst spjallen 23 kan overhettningstemperaturen regleras. If you want to increase the overheating temperature, you can resort to shaving gas line. The returned flue gases, which are introduced in the form of layers through the gaps 21 and 22 between the fires 15-18 and the side walls of the fireplace or through the gap 20 between the fires 15-18 and the roof 2, flow over and largely parallel to nearby fireplace surfaces form layers. over these said that reduced radiant heat absorption is achieved in these surfaces. The resulting flue gases, which are fed pine next to and strip largely parallel to these surfaces, large very small, orn even ails, the combustion process in the fireplace. Such reduced heat absorption reduces the vapor formation in the vapor formation tubes, cooling the surfaces and causing a larger heat mantle to be carried from the fireplace in the increased amount of gas, which is followed by the returned gas stream Pante the newly formed combustion gases. The more rigid gas stream and the heat content of the gases flowing past the superheater 5, achieve greater heat absorption in the superheater and higher suction overheating temperature than would result in the result without flue gas line. By controlling the amount of flue gases returned by means of dampers 25 and 26 and their distribution by means of the dampers 23, the overheating temperature can be regulated.
Claims (4)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE176470T |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SE176470C1 true SE176470C1 (en) | 1961-01-01 |
Family
ID=41965472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE176470D SE176470C1 (en) |
Country Status (1)
| Country | Link |
|---|---|
| SE (1) | SE176470C1 (en) |
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0
- SE SE176470D patent/SE176470C1/sv unknown
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