SE188373C1

SE188373C1 -

Info

Publication number: SE188373C1
Authority: SE
Publication date: 1963-01-01

Description

Uppfinnare: A E Eklund och S E M Wessberg Vissa typer av vaggar i angpannor och aven andra rokgaskanaler och dylikt utfores ofta pa sã satt, att till parallella tuber fastas block, t. ex. av gjutjarn. Dessa block, som ha en bredd, som i stort sett svarar mat aystfindet mellan tuberna, anligga mot var och en av tuberna utmed en fjardedel av dennas omkrets. Mellan tva. intill varandra liggande block brukar det vara en liten springa, som svarar mot forekammande varmeutvidgningar, och blocken fastas sedan till baksidan av tuberna med en klammer av lamplig art. Monteringen av blocken ar i mycket stor utstrackning beroende av att avstandet mellan tuberna är exakt, vilket i praktiken minga aander fir svart att astadkomma. Det intrafb b far darfor latt, att varmeoverfOringen mellan tub och block blir mindre god genom bristfallig anliggning mellan. delarna. Dylika vaggar ãr mycket vanliga vid sodahuspannor och liknande eldstader, men vid vissa aggresiva lutar svarar detta utforande ej mot de krav som man bor stalla for skydd av tuberna. Ett utforande, som ãr mera oberoende av delningen mellan tuberna och alltid garanterar en noggrann anliggning mellan tub och block, erhfilles, om vaggen utfores pa sadant satt, att blocken ha en bredd, som vasentligen svarar mot delningen mellan tuberna och arc anordnade att vart och ett anligga mot och uppbaras enbart av en tub, delvis omslutande denna. Uppfinningen medger en kombination, ddr tatningen mellan blocken utformas med overlappande delar vid samtliga fyra sidor och den kannetecknas i huvudsak daray, att blockens samtliga sidokanter aro utformade att overlappa motstaende delar av intilliggande block, vilka delar pa i och for sig kant salt aro fiirskjutna 1 forhallande till vaggen.s plan, omvaxlande utat fran respektive mat mot ugnen och sa utforda, att av varmeutvidgning fororsakade rorelser dam emellan kan forsigga. Inventors: A E Eklund and S E M Wessberg Certain types of cradles in steam boilers and also other flue gas ducts and the like are often designed in such a way that blocks are attached to parallel tubes, e.g. of cast iron. These blocks, which have a width which largely corresponds to the food aystfindet between the tubes, abut against each of the tubes along a quarter of its circumference. Between two. adjacent blocks are usually a small gap, which corresponds to occurring thermal expansions, and the blocks are then attached to the back of the tubes with a staple of a suitable type. The assembly of the blocks is to a very large extent dependent on the distance between the tubes being exact, which in practice has little effect for black to achieve. It is therefore easy for the heat transfer between tube and block to be less good due to inadequate abutment between. the parts. Such cradles are very common in soda house boilers and similar fireplaces, but with certain aggressive inclinations this design does not meet the requirements that one should set for the protection of the tubes. An embodiment which is more independent of the division between the tubes and always guarantees an accurate abutment between the tube and the block is obtained, if the cradle is designed in such a way that the blocks have a width which substantially corresponds to the division between the tubes and the arc arranged to each abut against and supported only by a tube, partially enclosing it. The invention allows a combination in which the seal between the blocks is formed with overlapping parts at all four sides and it can be characterized mainly in that all the side edges of the blocks are designed to overlap opposite parts of adjacent blocks, which parts on per se edge salt are offset 1 relating to the plane of the cradle, alternating outwards from the respective food towards the oven and then challenging that movements caused by heat expansion between women can occur.

A bifogade ritning visas sasom exempel nagra detaljer av en utfiiringsform av uppfinningen. Figur 1 är en detaljvy av en sadaln vagg, sedd inifran ugnen. Figur 2 dr ett mitt efter linjei figur 1, och figur 3 ar ett horisontalsnitt efter linjei figur 2. The accompanying drawing shows, by way of example, some details of an embodiment of the invention. Figure 1 is a detail view of a saddle cradle, seen from inside the oven. Figure 2 is a center line on Figure 1, and Figure 3 is a horizontal section on line 2 on Figure 2.

Vaggen, som kan vara en eldstadsvagg i en sodahuspanna, liar en barande stomme av parallella tuber 1, vilka inga i angpannans vattencirkulationssystem och som salunda garanterar en tillracklig kylning av hela konstruktionen. Till dessa tuber aro fa.stade ett antal rektangulara block 2, vars utat eldstaden vanda ytor aro slata men aven kan vara rafflade eller pa annat satt anpassade for uppbarande av eldfast massa. Blocken aro pa kant satt utforda av gjutjarn. Blockens baksidor arc utformade med en langsgaende central ranna, vars botten begransas av en halvcirkel och som lfimpligen fir »centerless»slipad med nagra tiondels millimeter mindre radie an tuben.. Blocken parympas eller papressas pa tuberna, sá att en fullgod anliggning erhalles. Rannans sidor fortsatta bakat med delar 3, som stracka sig nastan. Over hela diametern av tuben och avslutas av utat riktade langsgaende lister 4. Dessa tjana som faste for klammer 5, vilka aro• forsedda med organ 6, utformade att omsluta listerna 4. Endera av sistnamnda delar kan darvid vara utformad med en kilformig del, sh att spannorganet kan drivas fast och lasa blocket. The cradle, which can be a fireplace cradle in a soda house boiler, has a load-bearing frame of parallel tubes 1, which are not in the steam circulation system of the steam boiler and which thus guarantee a sufficient cooling of the entire structure. A number of rectangular blocks 2 are provided for these tubes, the surfaces of which outside the fireplace are smooth but can also be knurled or otherwise adapted to support refractory mass. The blocks on the edge were challenged by cast iron. The backs of the blocks are formed with a longitudinal central channel, the bottom of which is bounded by a semicircle and which is usually "centerless" ground with a radius of a few tenths of a millimeter smaller than the tube. The sides of the gutter continue to be baked with parts 3, which stretch almost. Over the entire diameter of the tube and terminated by outwardly directed longitudinal strips 4. These serve as fasteners for clamps 5, which are provided with means 6, designed to enclose the strips 4. Either of the latter parts can then be formed with a wedge-shaped part, sh that the clamping means can be driven firmly and load the block.

Den mot eldstaden. vanda delen av blocket far en storre massa an den del som är valid utat. Den senare är ju skyddad mot direkt bestralning, och under drift koramer darfor en sadan varmeutvidgning att ske, att blocket pressas annu hardare mot tuben. For att astadkomma helt tfita skarvar mellan bloc-ken, oberoende av varmeutvidgningen aro de vertikala sidokanterna av blocken utformade pa sadant salt, att de overlappa varandra, -varvid vid ena sidokanten en med vaggen 2— — parallel!, mat ugnen vettande, i forhallande till vaggplanet forsankt yta 7 astadkommes, under det att vid blockets motsatta sidokant utbildas: en utat vettande, i det forsankta planet liggande yta 8. Dessa ytor bearbetas, och det blir harigenom mojligt att astadkomma en tat fog. Pa samma satt kunna de horisontella kanterna av blocket utformas med med varandra samverkande delar 9 resp. 10. The one towards the fireplace. the water part of the block has a larger mass than the part that is valid out. The latter is protected against direct irradiation, and during operation such a thermal expansion occurs that the block is pressed even harder against the tube. In order to obtain completely thick joints between the blocks, independently of the thermal expansion, the vertical side edges of the blocks are formed on such a salt that they overlap each other, one at the side edge being parallel to the cradle with the cradle 2 - parallel! a recessed surface 7 to the cradle plane is provided, while at the opposite side edge of the block an outwardly facing surface 8 is formed in the recessed plane. These surfaces are machined, and it thus becomes possible to create a tat joint. In the same way, the horizontal edges of the block can be designed with cooperating parts 9 resp. 10.

I bada fallen kvarstar alltid ett spelrum sa att en inberdes r8relse kan ske helt oberoende av varmeutvidgningen. Genom den visade utforingsformen är det mifojligt att astadkomma en tat vagg med en :enda typ av block. Det foreligger da. vissa svarigheter att utbyta enstaka block, som eventuellt blivit skadade, och man far rakna med att taga ut viss del av vaggytan eller eventuellt en hel rad av block. For att mojliggora uttagning av ett eller mojligen endast ett fatal block kan man utfora vaggen av tva typer block, av vilka den ena an forsedd med enbart utat frail ugnen och den andra med enbart inat forskjutna anliggningsdelar. In both cases, there is always room for maneuver so that a relative's movement can take place completely independently of the thermal expansion. Due to the embodiment shown, it is possible to provide a tat cradle with a single type of block. It is available then. certain responsibilities for replacing individual blocks, which may have been damaged, and you may be required to remove a certain part of the cradle surface or possibly an entire row of blocks. In order to make it possible to remove one or possibly only one fatal block, the cradle can be made of two types of blocks, one of which is provided with only the outer part of the furnace and the other with only slightly offset abutment parts.

Den visade utforingsforuaen kan varieras pd manga sat Mom ramen for efterfoljande patentansprak, och blocken kunna anvandas i manga andra sammanhang an just vid sodahuspannors eldstader, t. ex. i rokgaskanater av olika slag. Blockert kunna utformas att pd lampligt sat uppbara eldfast massa eller att samverka med andra typer av vaggbekladnadsmaterial. The design forum shown can be varied in many ways within the framework of subsequent patent claims, and the blocks can be used in many other contexts than just at the fireplaces of soda house boilers, e.g. in flue gas cannates of various kinds. The block can be designed to support refractory mass in a suitable manner or to cooperate with other types of cradle cladding material.

Claims

Pat entansprak:

1. From parallel tubes (1) and from these supported blocks (2) of refractory material consisting of rock for fireplaces and the like, at which. blocks (2) have one. width, which essentially corresponds to the division between the tubes (1) and are arranged to each abut against and supported only by a tube, partly enclosing it, characterized in that all the side edges of the blacks (2) are designed to overlap opposite parts (7). , 8 resp. 9, 10) of adjacent blocks, which parts of the per se edge sat pulled offset in forbidding to the plane of the cradle, alternating outwards from resp. food against the oven and sft utfiirda, that of varrne expansion widened movements between them can forsigga.

Device according to patent claim 1, characterized in that the blocks are of two types, one of which is provided exclusively on the outside. the oven and the other with food only offset bearing parts.

Device according to claim 1, characterized in that the part of the blocks facing the fireplace has a larger mass. the part thereof which is at the height of the center line of the tube, whereby in the case of thermal expansion better pressure against the tube is obtained.

Device according to claim 3, characterized in that the blocks (2) are designed by a longitudinal ilium to enclose resp. tubes (1) half omlu-ets, and that the rann dr finely worked to accurate abutment against the tube.

Device according to claim 4, characterized in that the ridge in the block has a radius which, by a few tenths of a millimeter, is less than the radius of the tube, in order for the blocks to be able to be pressed or shrunk in the intended use. Request publications: Patents [from Great Britain 380 330; Germany 560 707; USA 1 876 301.