FI91650C - Steam box and method for adjusting the steam supply to the paper web - Google Patents

Description

9165091650

Hoyrylaatikko ja menetelmå hoyrynsyoton sååtåmiseksi paperirainaan Ånglåda och forfarande for att reglera ångmatningen till pappersbanan 5Steam box and method for adjusting steam input to a paper web Angle and forks for adjusting the flow to the paper web 5

Keksinnon kohteena on hoyrylaatikko ja menetelmå hoyrynsyotdn såatåmiseksi paperirainaan.The invention relates to a vapor box and to a method for introducing vapor input into a paper web.

Vedenpoiston tehostamiseksi paperikoneen muodostusosassa ja puristinosassa on raina 10 saatettu kuuman vesihoyryn vaikutuksen alaiseksi siten, ettå osa mainitusta hdyrystå lauhtuu rainarakenteeseen luovuttaen hoyry styslåmponså rainaan.In order to enhance dewatering in the forming section and the press section of the paper machine, the web 10 is subjected to hot water vapor so that a part of said heat condenses into the web structure, transferring the vapor to the web.

Tekniikan tasosta tunnetaan hoyrylaatikoita, joiden kautta hoyry tuodaan rainan yhteyteen. Tekniikan tason ratkaisuissa on hoyrylaatikon sisåinen hoyrynsyotto ollut 15 kaksiportainen. Ensin hoyry on johdettu sååtoventtiilin låpi, jolloin hoyrynpaine on laskenut syottoputken paineesta 1/3 - 1/5 osaan. Vålikammiosta hoyry on johdettu reikålevyn kautta rataan. Sååtoventtiiliå suljettaessa on mainitussa tekniikan tason ratkaisussa paine laskenut hoyryn syottokammiossa. Tålloin hoyrysuihkun nopeus rataan on vastaavasti laskenut. Pienempi hoyrysuihkun nopeus merkitsee huonompaa 20 hyotysuhdetta. Kun venttiili on enåå 25 % auki, on laskennallisesti todettu, ettå hoyrysuihkujen nopeus on enåå sama tai vain hiukan suurempi kuin radan pinnalla ajonopeudella 20-25 m/s kulkevan ilmakerroksen, jolloin hoyrysuihkut eivåt tåtå ilmakerrosta pysty låpåisemåån.Vapor boxes are known in the art, through which vapor is brought into contact with the web. In prior art solutions, the steam intake inside the steam box has been 15 two-stage. First, the steam is passed through the outlet valve, whereby the steam pressure has dropped from the inlet pipe pressure to 1/3 to 1/5. From the intermediate chamber, the steam is led through a perforated plate to the track. When the supply valve is closed, the pressure in the steam supply chamber has dropped in said prior art solution. In this case, the speed of the steam jet on the track has decreased correspondingly. A lower steam jet speed means a worse 20 efficiency. When the valve is more than 25% open, it has been calculated that the velocity of the steam jets is no longer the same or only slightly higher than that of the air layer running at 20-25 m / s on the track surface, whereby the steam jets cannot pass this air layer.

25 Hoyrylaatikon tulisi olla lisåksi siten konstruoitu, ettå låmpotilamuutokset eri kohdissa laatikkoa eivåt aiheuta hoyrylaatikkoon muodonmuutoksia. Jos muodonmuutokset ovat våhåiset, voidaan hoyrylaatikko asettaa låhelle rataa, jolloin radan mukaansa ottaman ilman pååsy hoyrystysalueelle pysyy våhåisenå.25 In addition, the steam box should be constructed in such a way that temperature changes at different points in the box do not cause deformation of the steam box. If the deformation is small, the steam box can be placed close to the track, so that the access of the air taken by the track to the evaporation area remains low.

30 Keksinnosså on oivallettu vålttåå edellå mainitut epåkohdat siten, ettå on poistettu hoyryn syotdn kaksiportaisuus. Syottohoyry johdetaan keksinnon mukaisesti suutin-reikien kautta rataan ja hoyryn syoton såato virtausta kuristamalla tapahtuu suoraan 2 9 i 650 hoyryn purkupinnan yhteydesså. Nåin olien hoyryn virtausnopeus myos pienellå hoyrynvirtausmåårillå pystytåån pitåmåån riittåvånå. Keksinnon mukaisesti hoyryn-syotdn såato tapahtuu sulkemalla ja/tai avaamalla hoyrysuuttimen eli hoyryn purkupinnan reikarivejå.The invention has been found to avoid the above-mentioned drawbacks by eliminating the two-stage nature of the steam supply. According to the invention, the feed steam is led through the nozzle holes to the track, and the feed feed of the steam by throttling the flow takes place directly in connection with the discharge surface of the steam. Thus, even with a small steam flow rate, the steam flow rate can be kept sufficient. According to the invention, the harvest of the steam feed takes place by closing and / or opening the steam nozzle, i.e. the rows of holes in the steam discharge surface.

55

Keksinnon mukaisella ratkaisulla saavutetaan hyvå hoyrytyksen hyotysuhde. Hukka-hoyryå ei myoskåån jåa ajelehtimaan ympåristdon. Hoyrylaatikon profllointi on tarkempi kuin tekniikan tason ratkaisuissa. Myoskin syottohoyryn paine voi olla alhaisempi kuin tekniikan tason ratkaisuissa. Koska syottolåmpotila on alhaisempi, on 10 rataan tapahtuva hoyryn lauhtuminen myos tehokkaampaa. Keksinnon mukainen rakenne on myos hitsaus- ja levytyoteknisesti edullisempi kuin tekniikan tason mukaiset rakenteet. Keksinnon mukaisessa rakenteessa ei tarvita erillisiå sååtolohkoja. Myos paljon koneistusta vaativa jakotukki voidaan korvata levyllå, johon on koneistettu paikat reikapintaa sulkevien jakotukki en såatoosien liikutuslaitteille. Keksinnon mukainen 15 hoyrylaatikko pysyy tasalåmpoisempånå, koska kylmiå lohkoja ei ole.The solution according to the invention achieves a good evaporation efficiency. The wasted steam must not be allowed to drift around the environment either. Profiling of the steam box is more accurate than in prior art solutions. Also, the feed steam pressure can be lower than in prior art solutions. Because the feed temperature is lower, condensation of steam in 10 lanes is also more efficient. The structure according to the invention is also more technically advantageous in terms of welding and sheet metal working than the structures according to the prior art. The structure according to the invention does not require separate control blocks. The manifold, which requires a lot of machining, can also be replaced by a plate with machined slots for the movement devices of the manifolds closing the hole surface. The steam box 15 according to the invention remains more even because there are no cold blocks.

Keksinnon mukaisessa ratkaisussa saådetaan hoyryn syottoå paperirainaan suoraan hoyryn purkupinnan alueelta varustamalla hoyrysuutinreikålevy erillisillå reikiå sulkevilla/avaavilla saåtoosilla, edullisesti sååtolevyillå. Sååtoosat on taivutettavissa 20 sulkemaan/avaamaan asteittain reikapintaa. Nåin olien kukin saatoosa tai saatoosaryh-må voidaan varustaa erillisellå toimilaitteella, esim. paineilmasylinterillå. Saatoosa voi olla muodostettu myos sisåisellå painekanavalla, jolloin painetta kanavassa muuttamalla taivutetaan saatoosaa sulkemaan/avaamaan hoyrysuutinreikålevyn reikarivejå.In the solution according to the invention, the introduction of steam into the paper web is effected directly from the area of the unloading surface of the steam by providing the steam nozzle hole plate with separate hole-closing / opening receptacles, preferably with discharge plates. The connecting parts can be bent 20 to gradually close / open the hole surface. Thus, each conveying part or group of conveying parts can be provided with a separate actuator, e.g. a pneumatic cylinder. The outlet part can also be formed by an internal pressure channel, in which case, by changing the pressure in the channel, the outlet part is bent to close / open the hole rows of the hole nozzle plate.

25 Keksinnon mukaiselle hoyrylaatikolle on pååasiallisesti tunnusomaista, ettå reikalevyn suutinreikien yhteydessa on sååtoosat, jotka ovat toimilaitteella saatettavissa erilaisiin peittoasentoihin reikålevyn suutinreikien suhteen.The steam box according to the invention is mainly characterized in that in connection with the nozzle holes of the perforated plate there are adjusting parts which can be brought into different covering positions with respect to the nozzle holes of the perforated plate by means of an actuator.

Keksinnon mukaiselle menetelmålle hdyrynsyoton sååtåmiseksi hoyrylaatikosta on 30 pååasiallisesti tunnusomaista, ettå hoyryntulon sååtåmiseksi osa reikålevyn rei’istå peitetåån yhdellå tai useammalla sååtoosalla.The method according to the invention for controlling the vapor input from a steam box is mainly characterized in that, in order to control the vapor input, a part of the holes in the perforated plate is covered with one or more contamination parts.

91650 391650 3

Keksintoå selostetaan seuraavassa viittaamalla oheisien piirustuksien kuvioissa esitettyi-hin keksinnon eråisiin edullisiin suoritusmuotoihin, joihin keksintoå ei ole tarkoitus kuitenkaan yksinomaan rajoittaa.The invention will now be described with reference to some preferred embodiments of the invention shown in the figures of the accompanying drawings, to which, however, the invention is not intended to be exclusively limited.

5 Kuviossa 1 on esitetty keksinnon mukaisen hoyrylaatikon asema paperikoneen puris-tinosassa.Figure 1 shows the position of a steam box according to the invention in the press section of a paper machine.

Kuviossa 2 on esitetty keksinnon mukaisen hoyrylaatikon ensimmåinen edullinen suoritusmuoto sivultapåin poikkileikkauskuvantona.Figure 2 shows a first preferred embodiment of a steam box according to the invention in a side cross-sectional view.

1010

Kuviossa 3 on esitetty laiteratkaisu kuvion 2 nuolen Kj suunnasta.Figure 3 shows the device solution of the arrow in Figure 2 Ki direction.

Kuviossa 4 on esitetty sååtdlaiteratkaisu, jolla kukin sååtdlevy on erikseen kytketta-visså kiinni reikapintaan, jolloin voidaan tapauskohtaisesti rainaleveyden mukaan 15 sååtåå haluttu hoyrytysleveys.Fig. 4 shows a control device solution with which each control plate can be connected separately to the hole surface, whereby the desired steaming width can be set on a case-by-case basis according to the web width.

Kuviossa 5 on esitetty keksinnon mukaisen såatoosa-toimilaiteyhdistelmån toinen suoritusmuoto.Figure 5 shows another embodiment of a 100-part actuator combination according to the invention.

20 Kuviossa 6 on esitetty suoritusmuoto kuvion 5 nuolen K2 suunnasta.20 Figure 6 shows an embodiment of the arrow K2 in Figure 5.

Kuviossa 1 on esitetty hoyrylaatikon asema paperikoneen puristinosassa. Raina W saatetaan kulkemaan vesihoyryn vaikutuksen alaiseksi siten, ettå osa mainitusta hoyrys-ta lauhtuu rainan W rakenteeseen luovuttaen hoyrystymislåmponså rainaan W. 25 Hoyrylaatikon kautta tapahtuvalla hoyryntuonnin avulla pystytåån lisååmåån paperin kuiva-ainepitoisuutta eli veden poistoa rainasta W. Hoyrylaatikon 10 avulla pystytaan lisaksi såatamåån rainan kosteusprofiilia paperirainan W leveydelta ja korvausilmapu-hallus estaa kylmån sali-ilman håiritsevåt sivuvaikutukset. Raina W kulkee imutelan S pinnalla ulommaisena ja huopa H rainan ja imutelan S pinnan S’ vålissa. Koska Sym-30 Press-sovellutuksessa on hoyrylaatikko 10 sovitettu nimenomaan imutelan S yhteyteen, edistetåån imutelan S imuvaikutuksella hoyryn kulkeutumista rainastruktuuriin.Figure 1 shows the position of the steam box in the press section of the paper machine. The web W is subjected to the action of water vapor in such a way that a part of said steam condenses on the structure of the web W, transferring the evaporation temperature to the web W. 25 the width of the paper web W and the replacement air hall prevents the disturbing side effects of cold hall air. The web W runs on the surface of the suction roll S as the outer one and the felt H between the surface S 'of the web and the suction roll S. In the Sym-30 Press application, since the steam box 10 is fitted specifically in connection with the suction roll S, the suction effect of the suction roll S promotes the transport of steam into the web structure.

4 916504,91650

Kuviossa 2 on esitetty keksinnon mukainen hoyrylaatikko 10. Hoyrylaatikko 10 kasittaa kotelorakenteisen rungon 11 ja siihen liitetyn hoyryn ulospurkautumispintana toimivan reikalevyn 12, jonka suutinreikien 12ai,12a2... kautta hoyry on sovitettu virtaamaan rainaan W. Hoyry tulee kotelorakenteisen rungon 11 sisåiseen tulokammioon 5 B hoyryn tuloaukon 13 kautta. Reikalevyn 12 ja rainan W vålillå on noin 12 mm:n rako.Figure 2 shows a steam box 10 according to the invention. The steam box 10 encloses a housing-structured body 11 and a connected steam discharge hole 12 connected thereto, through the nozzle holes 12ai, 12a2 ... of which the steam is arranged to flow into the web W. Hoyry enters the housing-shaped inlet 5 through inlet 13. There is a gap of about 12 mm between the perforated plate 12 and the web W.

Keksinnon mukaisesti kasittaa tulokammio B reikalevyn 12 yhteydesså saatoosan 14 ns. hetulaosan, joka on muotoaan muuttava taivutettava levyosa, joka on saatettavissa 10 asteittain kaarevan reikalevyn 12 pinnan myotaisesti sulkemaan ja avaamaan reikalevyn 12 suutinreikiå 12a1,12a2....; reikarivejå.According to the invention, the inlet chamber B is connected to the access plate 14 in connection with the hole plate 12. a hetero portion, which is a deformable bendable plate portion that can be made to close and open the nozzle holes 12a1,12a2 ... of the progressively curved perforated plate 12; hole rows.

Kotelomaisen rungon 11 påallyslevyyn 11a on kiinnitetty toimilaite 15 kuvion 2 suoritusmuodossa, edullisesti pneumatiikkasylinteri. Toimilaitteen 15 kara 15a on 15 sovitettu ulottumaan tulokammioon B ja siellå olevaan saatoosaan 14 vastelevyn 15b vålityksellå. Nåin olien kara 15a kytkeytyen vastalevyyn 15b liikuttaa såatoosaa 14 ja taivuttaa sitå kaarevan reikalevyn 12 pinnan myotaisesti sååtotapahtumassa såådettå-essa kammioon B virranneen hoyryn (nuoli Lj) virtausta suutinreikien 12a,12a2... kautta edelleen rainastruktuuriin. Kuviossa 2 esitetysti toimilaitteen 15 ollessa pneuma-20 tiikkasylinteri, sijaitsee månnån 15d ja sylinteripåådyn vålissa jousi 15c, joka palauttaa karan 15a ylåasentoon silloin, kun painetta ei ole johdettu sylinterin sisålle. Kuviossa on katkoviivoin esitetty saatoosan 14 asen to, jossa hoyrynsyotto on maksimissa reikalevyn 12 reikien ollessa taysin auki. Kuviossa on yhtenåisin viivoin piirretty saatoosan 14 asento, jossa saåtoosa 14 sijaitsee taysin reikalevyå 12 vasten. Kukin 25 saåtoosa 14 on påadyn taitoksesta liitetty ruuvilla R hoyrylaatikon 10 kotelorakenteen 11 sisallå olevaan rainaleveyden yli ulottuvaan kiinnityslevyyn lib. Keksinnon mukainen rakenne on yksinkertainen purkaa. Ruuvi R irrottamalla voidaan sååtoosat 14 saattaa pois reikålevyn 12 yhteydestå koteion 11 toisesta påådystå. Sååtoosat 14 voidaan myos asettaa paikalleen takaisin yhtenå kasettimaisena pakkauksena.An actuator 15 in the embodiment of Figure 2, preferably a pneumatic cylinder, is attached to the cover plate 11a of the housing-like body 11. The mandrel 15a of the actuator 15 is arranged to extend into the inlet chamber B and the outlet part 14 therein via the stop plate 15b. Thus, the spindle 15a coupling to the counter plate 15b moves the saddle portion 14 and bends the surface of the curved hole plate 12 anodically in the discharge event as the flow of steam (arrow Lj) flowing into the chamber B through the nozzle holes 12a, 12a2 ... As shown in Fig. 2, when the actuator 15 is a pneumatic-20 teak cylinder, a spring 15c is located between the piston 15d and the cylinder head, which returns the spindle 15a to the up position when no pressure is applied inside the cylinder. The figure shows in broken lines the position of the conveying part 14, in which the steam intake is at a maximum when the holes of the perforated plate 12 are completely open. The figure shows the position of the conveying part 14 in solid lines, in which the conveying part 14 is located completely against the hole plate 12. Each output portion 14 is connected by a screw F with a screw R to a fastening plate lib extending over the web width inside the housing structure 11 of the steam box 10. The structure according to the invention is simple to disassemble. By removing the screw R, the adjusting parts 14 can be removed from the connection of the perforated plate 12 at the other end of the housing 11. The container parts 14 can also be put back in one cassette-like package.

3030

IIII

5 916505,91650

Toimilaitteita 15’, 15", 15’" on useita rinnan ja ne on sovitettu kukin sååtåmåån omaa vyohykettåån Gj,G2.... Muutama reuna-alueen vyohyke Gj,G2... kåsittåå useita vierekkåisiå toisiinsa rajoittuvia sååtoosia 14’,14",14"’.... Kukin toimilaite 15’,15" on sovitettu sååtåmåån omaa vyohykettaan G^G^.. Reuna-alueen vyohykkeet Gj,G2...There are several actuators 15 ', 15 ", 15'" in parallel and they are each arranged to adjust their own zone Gj, G2 .... A few zone zones Gj, G2 ... comprise several adjacent adjacent components 14 ', 14 " , 14 "'.... Each actuator 15', 15" is adapted to set its own zone G ^ G ^ .. Edge zones Gj, G2 ...

5 kåsittåvåt useita vierekkaisiå sååtoakselilla 16 erikseen såådettåvisså olevia såatoosia 14’, 14”, 14’".5 comprise a plurality of adjacent adjustable axes 14 ', 14 ", 14'" on the output shaft 16.

Sååtoakselia 16 kierrettåesså ovat reunimmaisten vydhykkeitten Gi,G2... sååtdosat 14’, 14"... asetettavissa sulkuasentoon, jolloin hoyrynsyottoalue, sen leveys, voidaan 10 sååtåå kulloisenkin kåsiteltåvån paperirainan leveyden mukaan. Sekå paperikoneen hoitopuoli ettå kåyttopuoli kasittavåt kummatkin oman akselinsa 16, joilla voidaan sååtåå hoyrytyksen leveys kytkemållå reunimmaiset sååtdosat 14’, 14"... kiinni reikålevyyn 12. Hoyryn syotto niiden sulkeman reikålevyalueen kautta on tålloin estetty.When the supply shaft 16 is rotated, the control parts 14 ', 14 "... of the outermost zones Gi, G2 ... can be set to the closed position, whereby the steam intake area, its width, can be adjusted to the width of the paper web 16 to be processed. with which the width of the steaming can be adjusted by connecting the outermost adjusting parts 14 ', 14 "... to the perforated plate 12. The intake of steam through the area of the perforated plate closed by them is then prevented.

1515

Hoyrylaatikko 10 kåsittåå edelleen tekniikan tason mukaisesti ilman tuloaukon 17, josta ilma tuodaan tulokammioon C ja sen kautta aukosta 18 rainaleveyden yli ulottuvaan kanavaan 19. Kanavan 19 kautta johdetaan nuolella esitetysti verhosuihku hoyrylaati-kon 10 reuna-alueelle ilman sekoittumisen eståmiseksi hoyryyn.The steam box 10 further comprises, according to the prior art, an air inlet 17 from which air is introduced into the inlet chamber C and through it from the opening 18 to a web 19 extending across the web width, a curtain jet is passed through the duct 19 to the edge of the hairbox 10 to prevent air mixing.

2020

Kuviossa 2 esitetysti voi hoyrylaatikko kåsittåå myos rainan tulosuuntaan nåhden toisen hoyryntulokammion C, josta vakiohoyryvirta jaetaan reikålevyn 12 reikien 12b!,12b2... kautta rainaan W. Hoyry tuodaan tulokammioon C kanavan 13’ kautta. Reikien 13bj, 13b2-.. reikårivi ulottuu koko rainaleveydelle ja hoyryvirtausta mainittujen 25 reikien kautta ei såådetå vastaavalla tavalla kuin keksintomme mukaisessa ratkaisussa kammion B kohdalla. Kuviossa esitetysti voidaan reunimmaiset reiåt sulkea kaarevalla levyllå T ja nåin olien voidaan myos vakiohoyrytyksen osalta sååtåå hoyrytysleveys. Vakiohoyrytyksen tarkoituksena on nostaa hoyrytyksen tasoa ja sååto tapahtuu ainoas-taan kammiosta B ulosvirtautetun hoyryn avulla.As shown in Fig. 2, the steam box may also comprise a second steam inlet chamber C with respect to the inlet direction of the web, from which a constant steam stream is distributed through holes 12b !, 12b2 ... of the perforated plate 12 to the web W. Hoyry is introduced into the inlet chamber C via duct 13 '. The row of holes 13bj, 13b2- .. extends over the entire width of the web and the flow of steam through said holes 25 is not regulated in the same way as in the solution according to the invention at chamber B. As shown in the figure, the outermost holes can be closed by a curved plate T, and thus the steaming width can also be adjusted for standard steaming. The purpose of the standard evaporation is to increase the level of the evaporation and the production takes place only by means of the steam flowing out of the chamber B.

30 ♦ 6 9165030 ♦ 6 91650

Kuviossa 3 on esitetty laiteratkaisu kuvion 2 nuolen K2 suunnasta. Sååtoosat 14’, 14", 14"’ on sovitettu olemaan taivutettavissa karaa 15a liikuttamalla siten, ettå vyohykkeen Gj ja G2 sååtoosat 14’,14"... liikkuvat karan 15a vaikutuksesta samanai-kaisesti. Vyohykkeessa G2 on jåijestely vastaavanlainen. Kuviossa 3 esitetysti muodos-5 tuu vyohyke Gj viidesta vierekkåisestå såatoosasta 14’,14"... Kuitenkin tulee sååto-osien olla kytkettåvisså pois pååltå reunalta låhtien ja kyseinen jåijestely on toteutettu sååtoakselilla 16. Sååtoakseli 16 muodostuu nokkaosista 16aj,16a2.... Nokkaosat 16aj,16a2... kytkeytyvåt såatoakselia 16 nuolilla St esitetysti kierrettåesså sååtoosiin 14’, 14"... siten, ettå ensin kytketåån reunimmainen sååtoosa 14’ tåysin kiinni 10 reikalevyyn 12 ja tåmån jålkeen seuraava sååtoosa 14" jne. Vastaavanlainen sååtdak-seli 16 sijaitsee toisella hoyrylaatikon reuna-alueella. Nåin olien voidaan kahden sååtoakselin 16 avulla sååtåå hoyrytysleveys vastaamaan kulloisenkin kåsiteltåvån rainan leveyttå. Vyohyke G3 ei enåå kåsitå useita vierekkåisiå sååtoosia 14, vaan vyohyke G3 kåsittåå yhden ainoan leveåmmån sååtoosan 14. Sååtoosaa 14 liikuttaa 15 sylinterilaite 15"’.Figure 3 shows the device solution of arrow K2 in Figure 2. The end portions 14 ', 14 ", 14"' are adapted to be bendable by moving the mandrel 15a so that the end portions 14 ', 14 "... of the zone G1 and G2 move simultaneously under the action of the mandrel 15a. The zone G2 has a similar arrangement. As shown in Figure 3. a zone Gj is formed from five adjacent harvesters 14 ', 14 "... However, the leads must be disengageable from the top starting from the edge and this arrangement is effected by a drive shaft 16. The drive shaft 16 consists of camshafts 16aj, 16a2 .... 16a2 ... engage the rotary shaft 16 as shown by the arrows St in the rotation of the compartment 14 ', 14 "... so that first the outermost compartment 14' is fully engaged 10 in the hole 12 and then the next compartment 14" is located on the other. at the edge of the steam box. In this way, the steaming width can be adjusted by means of two output shafts 16 to correspond to the width of the respective web to be processed. The zone G3 no longer comprises a plurality of adjacent port 14, but the zone G3 comprises a single wider port 14. The port 14 is moved by a cylinder device 15 "'.

Reikålevy 12 kåsittåå kuviossa 3 esitetysti tiheåmmån rei’ityksen sillå osin reikålevyn 12 aluetta Mj, joka såådosså sulkeutuu viimeksi ja avautuu ensimmåisenå. Mainitulla jåijestelyllå tuotetaan tarpeeksi tihea hoyrysuihku rainaan W jo avautumisvaiheessa ja 20 estetåån paperirainan merkkautuminen.The perforated plate 12 comprises, as shown in Fig. 3, a denser perforation in that part of the region Mj of the perforated plate 12, which closes last in the ditch and opens first. Said arrangement produces a sufficiently dense steam jet in the web W already in the opening phase and prevents the paper web from being marked.

Kuviossa 4 on esitetty sååtoakselin 16 erås edullinen rakenne. Sååtoakseli 16 kåsittåå porrastetun nokkamekanismin, jossa on porrastus sååtoakselin pituudelta. Kukin nokka 16a!,16a2... sijaitsee lisåksi tietyllå kulmajaolla edelliseen nokkaan nåhden, jolloin 25 sååtoakselia kierrettåesså asettuu kukin nokka 16a!,16a2 kierron myotå kunkin kiertovaiheen jålkeen vuorollaan ala-asemaan D, jossa nokka joutuu kosketuksiin sen kohdalla olevaan sååtoosaan 14’; 14"... ja taivuttaa sen kiinni reikålevyå 12 vasten. Kyseisen sååtoosan 14 kohdalla suljetaan hoyryntulo.Figure 4 shows a preferred structure of the output shaft 16. The drive shaft 16 comprises a stepped cam mechanism with a step along the length of the drive shaft. Each cam 16a !, 16a2 ... is further located at a certain angular distribution with respect to the previous cam, whereby when rotating 25 drive axes, each cam 16a !, 16a2 is rotated after each rotation step to a lower position D, where the cam comes into contact with its position 14 at its position 14; 14 "... and bends it against the perforated plate 12. The steam inlet is closed at said outlet 14.

30 Kuviossa 5 on esitetty sååtoosan 14 taivutuksen toinen edullinen suoritusmuoto. Sååtoosan 14 toimilaite 15 muodostuu tåsså ratkaisussa taipuisaan sååtoosaan 14 li 91650 7 tehdystå keskeisestå kanavasta 140, joka paineistettaessa aikaansaa saåtoosan 14 taipumisen reikålevyn 12 kaarevan pinnan myotåisesti. Painetta asteittain lisååmållå saadaan haluttu reikalevyn 12 reikien I2a.l,l2a2...\ reikårivien peitto ja haluttu hoyry-virtaus ei-suljettujen reikien; reikårivien kautta.Figure 5 shows another preferred embodiment of the bending of the container 14. In this solution, the actuator 15 of the outlet part 14 consists of a central channel 140 made in the flexible outlet part 14 or 91650 7, which, when pressurized, causes the outlet part 14 to bend anodically to the curved surface of the perforated plate 12. Gradually increasing the pressure will give the desired coverage of the rows of holes I2a.1, 12a2 ... \ in the hole 12 and the desired steam flow in the non-closed holes; through the rows of holes.

55

Kuviossa 5 esitetysti on alkutilanteessa saåtoosan 14 sisållå oleva painekanava 140 kaareva. Kun paine tuodaan kanavan 140 sisålle, pyrkii se suoristamaan kanavaa 140, jolloin kuviossa katkoviivoin esitetysti taipuu sååtoosa 14 reikålevyå 12 vasten.As shown in Figure 5, in the initial situation, the pressure channel 140 inside the supply section 14 is curved. When the pressure is introduced inside the channel 140, it tends to straighten the channel 140, whereby the duct part 14 bends against the perforated plate 12, shown in broken lines in the figure.

10 Keksinnon puitteissa on mahdollinen my5s kuvioista 5 ja 6 poikkeava suoritusmuoto, jossa sååtoosat 14’, 14", 14’” konstruoidaan siten, ettå ne sulkevat reikålevyn 12 reiåt lepotilassa ja kanavaan 140 aikaansaatu paine avaa reikålevyn 12 reikiå ja reikårivejå.Within the scope of the invention, an embodiment different from Figures 5 and 6 is also possible, in which the adjusting parts 14 ', 14 ", 14'" are constructed so as to close the holes in the perforated plate 12 at rest and the pressure applied to the channel 140 opens the perforated plate 12 holes and perforated rows.

Kuviossa 6 on esitetty sååtoosien 14’, 14"... liikuttaminen kåyttåmållå kuvion 5 15 ratkaisua. Kanavan 20 kautta kohdistetaan paine samanaikaisesti vyohykkeen G! sååtoosiin 14’,14" ja 14"’. Vastaavasti voidaan vyohykkeem G2 sååtoosaa 14"" ohjata tuomalla paine saåtoosan 14"" kanavaan 140 kanavan 21 kautta. Paineet kanavissa 20 ja 21 on såadettåvisså toisistaan riippumattomasti, jolloin voidaan sååtåå hoyrytyksen aikaansaamaa rainan W kosteusprofiilia rainaleveydeltå. Reunimmaisten vyohykkeiden 20 Gj,G2 sååtoosia 14’,14"... voidaan erikseen sååtåå kiinni reikålevyyn 12 pyoritysle-veyden sååtåmiseksi vastaavin laitejåijestelyin kuin on esitetty kuvioiden aiemmissa suoritusmuodoissa. Reunaleveyden saåto voi tapahtua akselilaitteella 16 vastaavalla tavalla kuin on esitetty kuvioissa 3 ja 4. Sååtoosat 14’, 14"... voidaan myos sååtåå erikseen kiinni reikålevyyn 12 kanavajåijestelyn 140 avulla sååtåmållå kuhunkin 25 sååtdosaan 14 ’, 14"... liittyvåå kanavapainetta erikseen.Fig. 6 shows the movement of the control sections 14 ', 14 "... using the solution of Fig. 5 15. The pressure is simultaneously applied to the control sections 14', 14" and 14 "'of the zone G1 through the channel 20. Correspondingly, the control section 14" "of the zone G2 can be controlled by pressure in the duct 140 "" of the duct 140 via duct 21. The pressures in ducts 20 and 21 can be adjusted independently of each other, whereby the moisture profile of the web W caused by evaporation can be adjusted across the web width. The outermost zones 20 Gj, G2 can be connected separately 14 ', 14 to the perforated plate 12 for adjusting the width of rotation with device arrangements similar to those shown in the previous embodiments of the figures. The edge width can be obtained by the shaft device 16 in a manner similar to that shown in Figures 3 and 4. The adjusting parts 14 ', 14 "... can also be adjusted separately to the perforated plate 12 by means of a channel arrangement 140 by adjusting the channel pressure associated with each adjusting part 14', 14". .

Claims (11)

1. Anglåda (10), via vilken man leder ånga till pappersbanan, varvid en del av nåmnda ånga kondenseras i strukturen av banan (W) genom att dårmed overge sitt forångnings- 5 varme till banan (W), varvid man med hjalp av ångproduktionen som sker via ånglå-dan kan befråmja torkningen, varvid ånglådan (10) innefattar en fodralformig stomme (11), som innanfor sig begrånsar en ingångskammare (B) for ånga, ånglådan (10) innefattar en hålskiva, som fungerar som utstromningsyta, kånnetecknad dårav, att i samband med munstyckeshålen (I2a1,12a2···) av en hålskiva (12) det finns 10 reglerdelar (14), vilka reglerdelar kan bringas i olika tåcklågen med en funktionsanordning (15,16) i forhållande till munstyckeshålen (12aj,12a2) av hålskivan (12).A steam box (10) through which steam is fed to the paper web, wherein a portion of said steam is condensed into the structure of the web (W) by thereby passing its vapor heat to the web (W), thereby assisting with the steam production which occurs via the steam box can promote drying, the steam box (10) comprising a case-shaped body (11) which confines within it a steam chamber entrance chamber (B), the steam box (10) comprising a hole plate which acts as an outflow surface, , in connection with the nozzle holes (I2a1,12a2 ···) of a hole disk (12) there are 10 control parts (14), which control parts can be brought into different fog holes with a functional device (15,16) in relation to the nozzle holes (12a, 12a2) of the hole plate (12). 2. Ånglåda enligt patentkrav 1, kånnetecknad dårav, att reglerdelama (14’,14",14"’...) år bredvid varandra anordnade så att de begrånsar sig till varandra i 15 breddriktningen av pappersbanan och att att reglerdelama (14’, 14"...) år anordnade var f5r sig eller i en grupp att kunna placeras mot hålskivan (12) for att åstadkomma onskad ångstrøm till pappersbanastrukturen via hålskivan (12).Steam box according to claim 1, characterized in that the control parts (14 ', 14 ", 14"' ...) are arranged side by side so that they are bounded to each other in the width direction of the paper web and that the control parts (14 ', 14 "...) years were arranged for themselves or in a group to be positioned against the hole plate (12) to provide the desired steam flow to the paper web structure via the hole plate (12). 3. Ånglåda enligt något av foregående patentkrav, kånnetecknad dårav, att 20 funktionsanordningen (15) år en cylinderanordning, varvid man genom att forflytta spindeln (15a) påverkar reglerdelen (14) / gruppen (14’,14"...) av reglerdelar.Steam box according to any one of the preceding claims, characterized in that the operating device (15) is a cylinder device, whereby by moving the spindle (15a) the control part (14) / group (14 ', 14 "...) of control parts is actuated. . 4. Ånglåda enligt foregående patentkrav, kånnetecknad dårav, att spindeln (15a) år anordnad att påverka en motskiva (15b), som år kopplad till flera reglerdelar 25 (14’,14"...), varvid man med en enda funktionsanordning (15) samtidigt kan reglera zonen (Gj eller G2...) och reglerdelama (14’,14"...) i anslutning till denna.Steam box according to the preceding claim, characterized in that the spindle (15a) is arranged to actuate a counter-plate (15b) which is connected to several control parts 25 (14 ', 14 "...), whereby a single functional device ( 15) can simultaneously control the zone (Gj or G2 ...) and the control parts (14 ', 14 "...) adjacent thereto. 5. Ånglåda enligt något av foregående patentkrav, kånnetecknad dårav, att reglerdelen (14’,14"...) i ingångskammaren (B) for ångan år boj lig och den kan 30 bringas gradvis mot hålskivan (12) genom att påverka funktionsanordningen (15). 916505. A steam box according to any one of the preceding claims, characterized in that the control part (14 ', 14 "...) in the entrance chamber (B) for the steam is flexible and can be brought gradually towards the hole plate (12) by actuating the operating device ( 15) 91650 6. Ånglåda enligt något av foregående patentkrav, kånnetecknad dårav, att funktionsanordningen (15) består av en kanal (140) i reglerdelen (14) eller ett kanalsystem, som vid trycksåttning åstadkommer en bojning av reglerdelen (14) utmed den krokta ytan av hålskivan (12), varvid man efter trycket som åstadkommits i kanalen 5 (140) reglerar onskad tåckning av hålen (12aj,12a2...) i hålskivan (12) (figur 5).Steam box according to any one of the preceding claims, characterized in that the operating device (15) consists of a channel (140) in the control part (14) or a duct system which, when pressurized, provides a bend of the control part (14) along the curved surface of the hole plate. (12), according to the pressure created in the channel 5 (140), the desired clogging of the holes (12a, 12a2 ...) in the hole plate (12) (Fig. 5) is regulated. 7. Ånglåda enligt något av foregående patentkrav, kånnetecknad dårav, att dår finns en regleraxel (16) som innefattar nåbbar (16aj,16a2...) med en given vinkelfordeling i forhållande till varandra over långden av regleraxeln, varvid man genom 10 vridning av regleraxeln (16) placerar var och en nåbb (16aj,162...) i tur och ordning fast vid reglerdelen (14’, 14”) i anslutning till denna och varvid man genom vridning av regler-axeln (16) bringar reglerdelama (14’, 14"...) i forhållande till banbredden utgående från kanten fast vid hålskivan (12) for regiering av bredden av forångnings-området (figur 3). 15Steam box according to any one of the preceding claims, characterized in that there is a control shaft (16) comprising beakers (16aj, 16a2 ...) having a given angular distribution relative to one another over the length of the control shaft, whereby the control shaft (16) places each beak (16aj, 162 ...) in turn fixed to the control part (14 ', 14 ") adjacent thereto and by turning the control shaft (16) the control parts ( 14 ', 14 "...) in relation to the web width from the edge fixed to the hole plate (12) for controlling the width of the evaporation region (Figure 3). 8. Forfarande for regiering av ångmatningen till pappersbanan, i vilken losning ångan leds till en ingångskammare (B) innanfor ånglådan (10) och dårifrån via en hålskiva (12) i ånglådan till banstrukturen, kånnetecknat dårav, att fdr att reglera inmatningen av ångan tåcks en del av hålen (12aj,12a2...) i hålskivan (12) med en 20 eller flera reglerdelar (14’, 14"...).8. A method for regulating the steam feed to the paper web, in which the discharge of steam is conducted to an entrance chamber (B) within the steam box (10) and from there via a hole plate (12) in the steam box to the web structure, characterized accordingly, in order to regulate the steam input. a portion of the holes (12a, 12a2 ...) in the hole plate (12) with one or more control parts (14 ', 14 "...). 9. Forfarande enligt foregående patentkrav, kånnetecknat dårav, att man vid forfarandet anvånder av sig en bojlig reglerdel (14), som vid regiering bojs till onskat tåcklåge av munstyckeshålen (12aj,12a2...) av hålskivan (12) utmed ytan av hålskivan 25 (12).9. A method according to the preceding claim, characterized in that, during the process, a flexible control part (14) is used, which in connection with the installation is buoyed to the desired fog cover of the nozzle holes (12a, 12a2 ...) of the hole plate (12) along the surface of the hole plate. 25 (12). 10. Forfarande enligt foregående patentkrav, kånnetecknat dårav, att man vid forfarandet bojer var och en reglerdel (14’ eller 14"...) skilt for sig eller reglerdelama (14’,14",14"’...) i en grupp med en funktionsanordning (15), fordelaktigt en 30 cylinderanordning, genom att påverka åndan av reglerdelen (14’ eller 14" eller 14"’...) 91650 eller gruppen (14’,14",14’”...) av reglerdelar med spindeln (15a) av cylinderanordningen (15).10. A method according to the preceding claim, characterized in that during the process each control part (14 'or 14 "...) is bent separately or the control parts (14', 14", 14 "...) in a group having a functional device (15), advantageously a cylinder device, by influencing the spirit of the control part (14 'or 14 "or 14"' ...) 91650 or the group (14 ', 14 ", 14'" ...) of control parts with the spindle (15a) of the cylinder device (15). 11. Forfarande enligt något av foregående patentkrav 8-9, kånnetecknat 5 dårav, att man vid forfarandet åstadkommer bojningen av reglerdelen (14) med hjalp av ett tryck genom att producera ett trycksatt medium i en kanal (140) eller kanaler i reglerdelen (14) (figur 5).11. A method according to any one of the preceding claims 8-9, characterized in that in the process the bending of the control part (14) is achieved with the aid of a pressure by producing a pressurized medium in a channel (140) or channels in the control part (14). ) (Figure 5).