CH213398A

CH213398A - Multitube vertical boiler.

Info

Publication number: CH213398A
Authority: CH
Inventors: Groll Charles
Original assignee: Groll Charles
Priority date: 1937-10-23
Filing date: 1938-10-22
Publication date: 1941-02-15

Description

Chaudiere verticale multitubnlaire. Multitube vertical boiler.

La pre'sente invention a pour .objet une ehaudiere verticale multitubulaire ä foyer interieur. The subject of the present invention is a multitubular vertical boiler with an interior hearth.

Cette chaudiere est caracterisee en ce que la surface de chauffe comporte üne serie de tubes verticaug disposes, autour de la cham bre de combustion et reliant une caisse pla c6e au-(dessus de cellä-ei! ä un collecteur qui entoure la Partie inferienre de cette cham bre, les intervalles entre ces tubes, etant ob stru6s sur toute leur hauteur, sauf ä leur Partie superieure, afin de ne laisser les gaz de combustion sortir de ladite chambre qu'au voisinage de laidite caisse. This boiler is characterized in that the heating surface comprises a series of vertical tubes arranged around the combustion chamber and connecting a box placed above it to a collector which surrounds the lower part of the combustion chamber. this chamber, the intervals between these tubes being ob stru6s over their entire height, except at their upper part, so as not to let the combustion gases leave the said chamber except in the vicinity of the box.

Le dessin ' annege represente, ä eitre d'.egemple, une forme d'egecution ide la chaudiere faisant 1'objet de 1'invention, ainsi que des variantes de certaines Parties. The drawing annege represents, to be an example, a form of execution of the boiler forming the subject of the invention, as well as variants of certain parts.

La fig. 1 est une coupe verticale de la dite forme d'egecution; Les fig. 2, 3, 4, 5 et 6 sont des coupeis transversales suivant les lignes II-II, fig. 1 is a vertical section of said form of execution; Figs. 2, 3, 4, 5 and 6 are cross sections along lines II-II,

III-III, IV-IV, V-V et VI=VI de la fig. 1; La fig. 7 est une coupe transversale par tielle, -ä plus-grande echelle, montrant deug tubes et un element d'etancheite interme diaire; Les fig. 8 et .9 sont une coupe verticale partielle et uns coupe horizontale corres pondante dune variante; Les fig. 10 et 11 sont des coupes ver ticales partielles de deug autres variantes; La fig. 12 est une coupe verticale mon trant une autre disposition des tubes ä eaü; La fig. 13 est, une- Elevation de pieces de Joint entre deug tubes droits; La fig. 14 est une coupe horizontale sui vant la ligne XIV-XIV de la fig. 13 La fig. 15 est une coupe verticale -d'une carcasse ou charpente dune variante; Les fig. 16 et 17 sont ödes coupes hori zontales suivant les lignes XVI XVI et XVII-XVII de 1a fig. 15; La fig. 18 est une e16vation de face dun cadre de Porte; Les fig. 19 et 20 sont des coupes verticale et horizontale suivant les lignes XIX-XIX et XX-XX de la fig. 18; Les fig. 21 et 22 sont des coupes verti- cale et horizontale d'un garnissage r6frac- taire de Porte; La fig. 23 est une coupe horizontale par tielle montrant 1e joint dune Porte avec son caxlre. III-III, IV-IV, V-V and VI=VI of fig. 1; fig. 7 is a partial cross-section, to an enlarged scale, showing two tubes and an intermediate sealing element; Figs. 8 and 9 are a partial vertical section and a corresponding horizontal section of a variant; Figs. 10 and 11 are partial vertical sections of two other variants; fig. 12 is a vertical section showing another arrangement of water tubes; fig. 13 is, a- Elevation of Joint pieces between two straight tubes; fig. 14 is a horizontal section following the line XIV-XIV of FIG. 13 Fig. 15 is a vertical section of a carcass or frame of a variant; Figs. 16 and 17 are horizontal sections along lines XVI XVI and XVII-XVII of FIG. 15; fig. 18 is a front elevation of a door frame; Figs. 19 and 20 are vertical and horizontal sections along lines XIX-XIX and XX-XX of FIG. 18; Figs. 21 and 22 are vertical and horizontal sections of a Porte refractory lining; fig. 23 is a partial horizontal section showing the joint of a Door with its casing.

La chaudiere represent6e aux fig. 1 ä 7 comporte une s6rie,de tubes verticaux 1 pla- ces les uns pres des autres et d6bouchant en bas dann un collessteur annulaire 2 de section trapezoidale et en haut dans une caisse cireulaire plate 3, mais de hauteur variable selon qu'il s'agit de produire de Feau chaude ou de la vapeur. The boiler represented in figs. 1 to 7 comprises a series of vertical tubes 1 placed close to each other and opening at the bottom into an annular collessteur 2 of trapezoidal section and at the top into a flat circular box 3, but of variable height depending on whether it is It's about producing hot water or steam.

Ces 61ements forment une chambre de combustion eylindrique dopt la section hori zontale (fig. 2) a la forme d'un fer ä cheval, sa Partie anterieure presentant une solution de continuit6 qui laisse place pour une Porte de chargement et ide decrassage 5 et 6ven- tuellement pour les orifiees necessites par les divers modes de combustion que Fon est susceptible d'employer. These elements form an eylindrical combustion chamber whose horizontal section (fig. 2) has the shape of a horseshoe, its front part presenting a solution of continuity which leaves room for a loading and cleaning door 5 and 6ven - tually for the openings required by the various modes of combustion that Fon is likely to use.

Autour de cette chambre de combustion est pr6vue une enveloppe compos6e de pan- neaux calorifiques 6 ä 1'avant et 7 sur 1e restant du pourtour, et dune virole m6talli- que 8 entourant la base de la chaudiere. Around this combustion chamber is provided a casing composed of heating panels 6 at the front and 7 on the remainder of the periphery, and of a metal shroud 8 surrounding the base of the boiler.

Cette Base comprend une pike .de fonte 9 formant cendrier, qui supporte 1e collec- teur 2 et dopt 1e fond repose sur 1e sol, en Partie direetement par son fond plat et en Partie par des pieds 10 disposes radialement; ce cendrier pHsente une Partie circuläire ou- verte en haut, au-dessous dune grille 11 pla- c6e au centre du collecteur 2, et une Partie prismatique dirig6e vers Favant et ouverte pour 1'entree de Fair et la sortie des cendres. This base comprises a pike .de cast iron 9 forming an ashtray, which supports the first manifold 2 and its bottom rests on the ground, in part directly by its flat bottom and in part by feet 10 arranged radially; this ashtray has a circular part open at the top, below a grid 11 placed in the center of the collector 2, and a prismatic part directed forwards and open for the entry of air and the exit of the ashes.

La Partie antdrieure de Fenveloppe 8 comporte une boite d'arriv6e d'air 12 avec Buse laterale 13 destink ä eire relke ä une soufflerie, et au-dessous de cette boite une Porte de cendrier 14. Les tubes 1 out, dans la plus grande Partie de leur hauteur, un diamMre tel qu'ils se touchent presque, tandis que leurs extr6- mit6s la et 1b out un diametre r6duit. La reduction des extrömit6s inUrieures la a pour but de permettre leur fixation conve- nable sur 1e collecteur 2, par exemple au moyen de brides. Cette Partie de la chambre de combustion est revetue int6rieurement dune garniture refractaire 15 en forme de fer ä cheval, s'Mendant jusqu'ä Fouverture de dkrassage 5. The anterior part of the envelope 8 comprises an air inlet box 12 with side nozzle 13 intended to be connected to a blower, and below this box an ashtray door 14. The tubes 1 out, in the largest Part of their height, a diameter such that they almost touch each other, while their extremities there and 1b out have a reduced diameter. The purpose of reducing the lower ends 1a is to enable them to be suitably fastened to the manifold 2, for example by means of flanges. This part of the combustion chamber is lined internally with a refractory lining 15 in the shape of a horseshoe, extending as far as the release opening 5.

D'autre Part, la r6duction de diametre des extr6mites sup6rieures lb a surtout pour but de m6nager entre ces extremit6s des pas- sages 1.6 pour la sortie des gaz de combus- tion. On the other hand, the main purpose of reducing the diameter of the upper ends 1b is to provide passages 1.6 between these ends for the exit of the combustion gases.

Les interstices restant entre les RTI ID="0002.0272" WI="13"HE="4" LX="1730" LY="930"> portions larges des tubes 1, du fait que ceux-ei ne sont jamais parfaitement rectilignes, sont obtures de fagon Manche au moyen de lames 17 en acier mince (fig. 7), courMes trans- versalement de fagon ä former deux ailes cintrks, qui une fois introduites par force- ment entre les tubes et convenablement ma- tAes s'appliquent exactement contre les pa- rois de oes tubes. The interstices remaining between the RTI ID="0002.0272" WI="13"HE="4" LX="1730" LY="930"> wide portions of the tubes 1, because these are never perfectly straight, are closed in the handle way by means of blades 17 of thin steel (fig. 7), running transversely so as to form two curved wings, which, once introduced by force between the tubes and suitably matted, apply exactly against the walls of these tubes.

Gräce ä ces dispositions, les gaz ,de com- bustion s'6chappent seulement par les inter- valles 16 et passent dann un espace annu- laire 18 compris entre la rangee de tubes 1 et les panneaux 7; ils descendent ainsi, en chauffant la surface exgrieure des tubes 1 et du colleeteur 2, dans une chambre annu- laire 19 qui entoure 1e cendrier. Thanks to these arrangements, the combustion gases escape only through the gaps 16 and pass through an annular space 18 comprised between the row of tubes 1 and the panels 7; they thus descend, by heating the outer surface of the tubes 1 and of the collector 2, into an annular chamber 19 which surrounds the ashtray.

Cette derniere chambre est divis6e par deux cloisons annulaires 20 et 21 dispos6es en chicanes et comprend ainsi 4eux Parties, Tune ext6rieure 19a destink ä recueillir les poussieres et la suie entrainees par les fu- mees et 1'autre intdrieure 19b; eelle-ei de- bouche en bas dans un evidement 22 de 1a magonnerie supportant la chaudiere; au cen- tre de cet evidement se trouve un orifice 23 d'un carneau 24 allaut ä la cheminee. This last chamber is divided by two annular partitions 20 and 21 arranged in baffles and thus comprises 4 two Parts, one outer 19a intended to collect the dust and soot entrained by the fumes and the other inner 19b; it emerges at the bottom in a recess 22 of the masonry supporting the boiler; at the center of this recess is an opening 23 of a flue 24 leading to the chimney.

Il r6sulte de la disposition rdguli6re et concentrique des passages 16, 18, 19, 22, 23 que les Parcours des gaz de combustion sont egaux entre eux sur tont le pourtour de la chaudiere et que 1e debit de ces gaz, 1e long de tous les tubes 1, est parfaitement uni forme. It follows from the regular and concentric arrangement of the passages 16, 18, 19, 22, 23 that the paths of the combustion gases are equal to each other all around the perimeter of the boiler and that the flow rate of these gases, along all the tubes 1, is perfectly uniform.

L'eau ä chauffer est introduite dann le collecteur 2 par une tubulure 25 menagee sur 1a partie anterieure saillante de celui-ci, et ayant une forme coudee vers le cete de la chaudiere. Le depart de 1'eau chaude ou de la vapeur s'effectue ä la partie superieure de 1a -caisse 3 par une tubulure centrale 26. The water to be heated is introduced into the collector 2 through a pipe 25 provided on the projecting front part of the latter, and having a shape bent towards the side of the boiler. The departure of hot water or steam takes place at the upper part of the box 3 through a central pipe 26.

Afin de permettre 1e nettoyage de la sur- face externe des tubes 1, les panneaux 7 sont montes de fagon amovible; pour facil- ter la manoeuvre de ceux-ei, an a prevu une potence 27 pivotant autour de la tubulure 26 et reposant par des roulettes 28 sur un ehe min circulaire 29 supporte ä 1a partie supe- rieure de la chaudiere par des pattes 30 po- sees sur la caisse 3; sur la partie de cette potence faisant saillie hors du chemin 29 peut rouler une autre roulette 31 supportant une gatte 32 munie d'un ergot ou crochet qu'on peut engager dans un trou menage a la partie superieure de chaque panneau 7. 0n peut ainsi amener la potence 27 succes,- sivement en face de tous les panneaux 7 et y suspendre ceux-ei de maniere qu'on puisse les deplaeer radialement et circulairement saus etre gene par leurs poids. Les. Bords superieur et inferieur de chaque panneau peuvent etre appliques par 1'action de lo- quets ou autres organes de serrage ä ma- noeuvre rapide (non representes) contre des garnitures d'etancheite placees autour des vi- roles 29 et B. D'autres garnitures ou des couvre-joints appropries peuvent eire prevus sur les, cötes verticaux de ces panneaux pour completer 1@etancheite de 1'enveloppe. In order to allow the cleaning of the external surface of the tubes 1, the panels 7 are mounted in a removable way; to facilitate the maneuvering of these, a bracket 27 has been provided, pivoting around the pipe 26 and resting by rollers 28 on a circular end 29 supported at the upper part of the boiler by legs 30 in. - sees on crate 3; on the part of this stem protruding out of the way 29 can roll another wheel 31 supporting a gate 32 provided with a lug or hook which can be engaged in a hole provided in the upper part of each panel 7. 0n can thus bring the bracket 27 successfully, - sively in front of all the panels 7 and suspend them therein so that they can be moved radially and circularly without being hindered by their weight. THE. The upper and lower edges of each panel can be applied by the action of latches or other quick-acting clamping members (not shown) against sealing gaskets placed around the ferrules 29 and B. other fittings or appropriate joint covers may be provided on the vertical sides of these panels to complete the tightness of the envelope.

En raison du changement de direction produit par les cloisone 20, 21, les particules solides contenues dans, 1e courant gazeux descendant ä travers 1e passage 18 sont pro jetees au fond de la chambre exterieure 19a et s'y accumulent. 0n peut les en extraire de temps en temps gräce ä des portes 33 menagees dans la virole B. Il est .ä remarquer que la disposition de cette chaudiere se prete ü 1'obtention de sur- faces de chauffe plus ou moiris developpees soit par la variation @de la hauteur des tubes, soit par un simple changement de diametre de la chaudiere et du nombre ides tubes 1, sans modification de la hauteur de cette chaudiere. Due to the change in direction produced by the partitions 20, 21, the solid particles contained in the gas stream descending through the passage 18 are thrown to the bottom of the outer chamber 19a and accumulate there. They can be extracted from it from time to time by means of doors 33 made in shell B. It should be noted that the layout of this boiler lends itself to obtaining more or less developed heating surfaces either by variation @de the height of the tubes, either by a simple change in the diameter of the boiler and the number of tubes 1, without modifying the height of this boiler.

Dans une variante, la surface de chauffe est augmentee par la disposition, autour de 1a. rangee de tubes 1RTI ID="0003.0276" WI="12" HE="4" LX="1426" LY="579"> jointifs (fig. 8 ä 10), dune seconde rangee de tubes 34, egalement verticaux, mais suffisamment espaces les uns des autres pour qu'on puisse passer entre eux une brosse lorsqu'il s'agit de debarrasser la surface des tubes de la suie et des pous- srieres adherentes. Alternatively, the heating surface is increased by the arrangement, around 1a. row of tubes 1RTI ID="0003.0276" WI="12" HE="4" LX="1426" LY="579"> contiguous (fig. 8 to 10), a second row of tubes 34, also vertical, but sufficiently spaced from each other so that a brush can be passed between them when it is a question of clearing the surface of the tubes of soot and adhering dust.

Dans la variante representee en fig. 8, les tubes 34 sont semblables aux tubes 1 et fixes de la meme fagon au collecteur 2 et ä la caisse 3. Dans la variante de la fig. 10, les tubes 34 ont leur extremite inferieure 34a cintree et dispos6e pour se fixer sur 1e pourtour du collecteur 2, dopt 1a` section est de meme largeur que Jans 1e cas de la fig. 1. In the variant represented in FIG. 8, the tubes 34 are similar to the tubes 1 and fixed in the same way to the collector 2 and to the box 3. In the variant of fig. 10, the tubes 34 have their lower end 34a bent and arranged to be fixed on the first periphery of the manifold 2, its section having the same width as the first case of FIG. 1.

La variante de la fig. 8 presente encore un bloc refractaire 35 suspendu par des bou- lons 36 au-dessous de la caisse 3 afin d'en proteger 1e fond de 1'action directe des flammes. Les boulons 36 passent librement ä travers des tubes-entretoises 37 fixes aux parois superieure et inferieure de la caisse. La presence de ce bloc protecteur 35 contri- bue ä äviter 1a formation d'incrustations sur 1e fond de lai caisse et evite toute deterio- ration par coups (de feu; les assemblages du fond avec les tubes 37 se trouvent egalement prot9ges des effets nuis.ibles des dilatations. The variant of fig. 8 also shows a refractory block 35 suspended by bolts 36 below the box 3 in order to protect the bottom from the direct action of the flames. The bolts 36 pass freely through spacer tubes 37 fixed to the upper and lower walls of the crate. The presence of this protective block 35 helps to prevent the formation of incrustations on the bottom of the box and avoids any deterioration by gunshots; the joints of the bottom with the tubes 37 are also protected from harmful effects. .ibles of expansions.

La fig. 1@1 montre 1'agencement d'un dis- positif de retour d'eau qui peut etre prevu aux lieu et place de quelques-uns,des tubes 1 et 34 et qui comporte un tube de large dia- m6tre 38 relie ä la caisse 3 par une tübü- lure 39 et au collecteur 2 par un: tube 40 s'elevant ä 1'interieur @de ce large tube 38; au-dessus @du tube 40 est place un chapeau conique 41 obligeant 1'eau qui redesoend de 3 en 2 de suivre un Parcours en S tel que les matieres solides entrainees tombent au fand de 1'espace annulaire 42 entourant 1e tube 40, d'oü elles peuvent eire extraites de temps en temps par un tube de purge 43. 0n 6vite ainsi taut risque d'accumulation de depöts solides sur 1e fand de la caisse 3. fig. 1@1 shows the arrangement of a water return device which can be provided instead of some of the tubes 1 and 34 and which comprises a large diameter tube 38 connected to the box 3 by a tube 39 and to the collector 2 by a tube 40 rising inside this wide tube 38; above the tube 40 is placed a conical cap 41 obliging the water which reddens 3 in 2 to follow an S-shaped course such that the entrained solid matter falls in the fand of the annular space 42 surrounding the first tube 40, 'where they can be extracted from time to time by a purge tube 43. 0n thus avoids any risk of accumulation of solid deposits on the first fand of the box 3.

L'intervalle cre6 par la presence de ce dispositif dann la serie des tubes 1 peut eire obture par une garniture refractaire 44 sur tonte la. hauteur de la chambre de combus- tion. The interval created by the presence of this device in the series of tubes 1 can be closed by a refractory lining 44 on the mowing. height of the combustion chamber.

Dans d'autres formes d'execution, an pourra varier 1e Profil transversal du collec- teur 2, par exemple donner ä ce dernier la forme d'un tore; de meme, an pourra varier la forme de la caisse 3, celle-ei pouvant avoir par exemple une forme annulaire avec de- part sur un cöte. 0n pourra aussi disposer les tubes 1 suivant un contour polygonal, par exemple rectangulaire. Le mode d'assem- blage de ces tubes avec 1e collecteur 2 et avec la caisse 3 peut egalement varier; si 1e collecteur est en acier, par exemple, an pourra y fixer les extremites la par vissage; les extremites superieures 1b seront fixees au fand de la caisse preferablement par ser- tissage au dudgeonnage. Les panneaux 7 pourront etre montes sur des Bonds Portes par des montants fixes lorsqu'on disposera autour de la chaudiere Tun espace libre suf- fisant pour permettre leur pivotement. 0n pourra aussi disposer la chaudiere pour 1'utilisation de divers combustibles, charbon, cohe, mazout, etc., et la munir dune grille rotative, par exemple, selon 1e brevet suisse no 196310, ajustee contre la paroi du col- lecteur 2. In other embodiments, it will be possible to vary the transverse profile of the collector 2, for example to give the latter the shape of a torus; likewise, the shape of the body 3 may be varied, it being possible, for example, to have an annular shape with departure on one side. 0n can also arrange the tubes 1 along a polygonal contour, for example rectangular. The method of assembly of these tubes with the manifold 2 and with the box 3 can also vary; if the first manifold is made of steel, for example, one can fix the ends there by screwing; the upper ends 1b will be fixed to the fand of the body, preferably by crimping with expansion. The panels 7 can be mounted on Bonds carried by fixed uprights when there is sufficient free space around the boiler to allow them to pivot. It is also possible to arrange the boiler for the use of various fuels, coal, cohe, fuel oil, etc., and to provide it with a rotating grate, for example, according to Swiss patent no. 196310, fitted against the wall of the manifold 2.

0n va decrire ei-apres, en reference aux fig. 12 ä 23, des variantes de details qu'on peut apporter ä diverses Parties de la chau- .di6re idecrite ei-dessus en vue d'en rendre la fabrication plus facile et plus economique taut en assurant parfaitement 1'etancheite des joints entre les tubes, les elements re- fractaires des parois, les Portes et leurs enca- drements, etc. Pour que, dans la forme d'execution de- crite precedemment, les gaz de combustion puissent passer entre les extremites supe- rieures des tubes et que les autres Parties de ceux-ei soient ä peu pres jointives, an a prevu 1'emploi de tubes droits ayant leurs extremites retreintes, ce qui entrainait ä, des difficultes et des frais de fabrication. 0n will describe ei-after, with reference to FIGS. 12 to 23, variants of details that can be made to various parts of the boiler described above with a view to making its manufacture easier and more economical, while ensuring perfect sealing of the joints between the tubes, the refractory elements of the walls, the doors and their frames, etc. In order that, in the form of execution described above, the combustion gases can pass between the upper ends of the tubes and that the other Parts thereof are more or less contiguous, provision has been made for the use of straight tubes having their ends constricted, which resulted in difficulties and manufacturing costs.

0n peut eviter ces inconvenients en uti- lisant (fig. 12) des tubes 1 de section uni forme, dopt les uns sont droits, et les autres cintres pres de leurs extremites, et enRTI ID="0004.0274" WI="6" HE="4" LX="1786" LY="659"> pla- gant ces tubes les uns contre les autres taut en les disposant @de fagon que leurs points d'insertion sur 1e collecteur 2 et sur la caisse 3 soient alternes sur des cercles concentri- ques. Gräce ä oet agencement, les extremit4bs des tubes peuvent etre suffisamment espa- c6es pour permettre leur assemblage avec les parois de 2 et 3, et pour laisser passer les gaz de combustion entre elles. 0n can avoid these drawbacks by using (FIG. 12) tubes 1 of uniform section, dopt some are straight, and the other bends near their ends, and enRTI ID="0004.0274" WI="6" HE ="4" LX="1786" LY="659"> placing these tubes against each other while arranging them so that their insertion points on the first collector 2 and on the box 3 are alternated on concentric circles. Thanks to this arrangement, the ends of the tubes can be sufficiently spaced to allow their assembly with the walls of 2 and 3, and to allow the combustion gases to pass between them.

Au lieu de tubes, les uns droits, les autres cintres ä leurs deux extremites, an pourra de maniere analogue utiliser des tubes tour semblables ayant une seule extremite cintree et disposer ces tubes cöte ä cöte et tete-beche en alternant une extremite cintree en haut et une extremite cintree en bas. Instead of tubes, some straight, the others bent at their two ends, one could in a similar way use similar tower tubes having a single curved end and arrange these tubes side by side and head to tail, alternating a curved end at the top and a curved end at the bottom.

Une solution encore preferable indiquee sur les fig. 13 et 14 consiste ä. utiliser des tubes @droits 1, de section uniforme, qu'on dispose circulairement en menageant entre eux des intervalles relativement larges, et ä obturer ces intervalles sur taute la hauteur voulue au moyen d'elements appropries com- prenant deux cornieres 45 ayant chacune une aile cintree au diametre du tube 1 adja- cent, et des moyens pour maintenir ces cor- nieres fortement appliquäes contre ces tubes, tels que des boulons-entretoises 46 et des boulons 47 maintenant los ailes planes ali- gnees entre des rondelles au plaquettes de serrage 48, 49. Un leger jeu menage entre ces cornieres permet de garer aux irr6gula- rit6s des tubes et aux inexactitudes de man tage. L'interieur des cornieres est garni d'un mastic refractaire (non represente) et une Bande de Garton refractaire 50 est suspendue aua boulons 47 ä, une petite distance der- riere las cornieres afin de bien proteger celles-ei contre 1'action des gaz en combus- tion. A still preferable solution indicated in FIGS. 13 and 14 is ä. using straight tubes 1, of uniform cross-section, which are arranged in a circular manner leaving relatively wide intervals between them, and closing these intervals over the entire height desired by means of suitable elements comprising two angle irons 45 each having a wing bent to the diameter of the adjacent tube 1, and means for maintaining these angle irons firmly applied against these tubes, such as spacer bolts 46 and bolts 47 maintaining the flat wings aligned between washers at the plates of tightening 48, 49. A slight play provided between these angle irons makes it possible to compensate for irregularities in the tubes and inaccuracies in handling. The interior of the angles is lined with a refractory mastic (not shown) and a refractory Garton strip 50 is suspended from the bolts 47 ä, a short distance behind the angles in order to protect them well against the action of the burning gas.

Une autre variante se rapporte ä la öons- truction de 1a carcasse ou charpente de la chaudiere (fig. 15, 16, 17). Celle-ei com- prend un cercle inferieur 51 place sur champ, .des colonnettes 52 reposant sur ce cercle, un anneau plat 53 soutenu par ces colonnettes, un cercle 54,de diametre plus. Petit que celui ,du cerele 51 et pose .sur champ sur 1'anneau 53, des colonnettes 55 en fer ä.<B>T</B> supportees par 1e cercle 54, et un cercle supdrieur 56 egalement place sur champ. Another variant relates to the construction of the carcass or frame of the boiler (Figs. 15, 16, 17). This comprises a lower circle 51 placed on the field, small columns 52 resting on this circle, a flat ring 53 supported by these small columns, a circle 54, of greater diameter. Smaller than that of the hoop 51 and placed on the ring 53 on the field, small iron posts 55 supported by the hoop 54, and an upper hoop 56 also placed on the field.

Las, intervalles compris entre las colon- nettes 52, sauf ä 1'endroit de la Porte de cendrier, sont remplis par des panneaux de tele 57 fixes ä demeure de fagon jointive et garnis exterieurement de carton isolant afin de reduire 1e rayonnement de la chaleur. D'autre Part; las intervalles; compris entre las colonnettes, 55 .sont remplis par -des Portes %a Bonds dont chacune (fix. 18, 19, 20) com- porte un cadre metallique garni de briques refractaires. Alas, the intervals between the columns 52, except at the location of the ashtray door, are filled with permanently fixed TV panels 57 in a contiguous manner and lined on the outside with insulating cardboard in order to reduce the radiation of heat. . On the other hand; the intervals; between the small columns, 55 .are filled with Bond Doors, each of which (fix. 18, 19, 20) has a metal frame lined with refractory bricks.

Chacun de ces cadres comprend deux montants en fer plat 58 reunis en haut et en Bads par des segments d'anneaux en fer plat 59 et 60, ainsi. quo par des fers plats eintr.es 6-1 et 62 places sur ehamp, 1'un contre 1e segment 59, 1'autre ä une petite distance au-des.sous du Segment 60 afin @de permettre Paccrochage des briques refractaires 63. Ces dernieres (fix. 21 et 22) sont encastrees par leur face externe dann des gaines en tsle 64 et sont placees@ las unes ä cöte des autres ä 1'interieur du cadre de Porte de fagon que leurs Bords internes se touchent et qu'elles forment une surface continue destinee ä etre ldchee par las gaz de combustion Jans leur Parcours descendant rä 1'exterieur de la cou- ronne de tubes 1. Each of these frames comprises two flat iron uprights 58 joined at the top and bottom by flat iron ring segments 59 and 60, as well. quo by flat bars 6-1 and 62 places on the field, one against the segment 59, the other at a small distance below the segment 60 in order to allow the attachment of the refractory bricks 63. The latter (fix. 21 and 22) are embedded by their external face in sheaths made of sheet metal 64 and are placed side by side inside the door frame so that their internal edges touch and that they form a continuous surface intended to be released by the combustion gases on their path descending outside the crown of tubes 1.

L'etancheite des joints entre las cadres de Portes et la carcasse de la chaudiere peut etre assuree (fix. 23) par un cordon 65 en matiere souple et refractaire telle que 1'amiante, qui est maintenu autour du cadre par des Bandes de fer plat 66 et des vis 67 dont la serrage est limite par des entretoises reglables 68. The tightness of the joints between the door frames and the carcass of the boiler can be ensured (fix. 23) by a cord 65 of flexible and refractory material such as asbestos, which is held around the frame by iron bands plate 66 and screws 67 whose tightening is limited by adjustable spacers 68.

Claims

CLAIM Vertical multitubular boiler with an internal hearth, characterized in that the heating surface comprises a series of vertical tubes arranged around the combustion chamber and connecting a box placed bare above the latter to a collector which surrounds the lower part of this chamber, the intervals between these Rant tubes obstructed over their entire height, except at their upper part, in order to allow the combustion gases to leave @from said chamber only at the RTI ID="0005.0271" WI="9" HE="4" LX="1691" LY="803"> vicinity of said fund. SUB-CLAIMS 1 Boiler according to claim, characterized in that the tubes are placed close to each other and have in their upper part a reduced section in order to provide passages for the combustion gases.

2 Boiler according to claim and sub-claim 1, characterized in that the Parties quo. The lower sections of the tubes also have a section of reduced width in order to facilitate their assembly with the lower manifold, the intervals between these reduced parts being sealed off by a refractory lining.

3 Boiler according to claim and sub-claim 1, characterized in that the gaps between the wide parts of the tubes are made sleeves by means of -elastic blades inserted between these tubes.

4 Boiler according to claim, characterized in that after their exit from the combustion chamber, the combustion gases are drawn downwards and descend the Jong of the tubes following equal paths all around. the boiler, since the inlet of an exhaust flue is centrally located under the boiler.

5 Boiler according to claim, characterized in that on their paths, the gases undergo a sudden change of direction and abandon the solid maueres dopt they are loaded into a deposition chamber surrounding the first ashtray.

6 Boiler according to claim, charac- terized in that a row of tubes spaced from each other is 4isposee around the row of tubes arranged around the combustion chamber.

7 Boiler according to the claim, characterized in that the upper box is connected to the lower manifold by an additional tube of large diameter and by a tube starting from the said manifold and rising inside this large tube, in order to allow water to descending from the upper body to abandon the solid matter entrained in the annular space between these two tubes.

8 Boiler according to claim, characterized in that the bottom of the upper case is preserved from the direct action of the flames by a refractory block suspended by bolts passing through tubular spacers which connect the top and the bottom. of the cash register.

9 Boiler according to claim, characterized in that the combustion gases going to the flue circulate against the walls of the ash pan and thus serve to heat the fuel admitted therein.

10 Boiler according to claim, characterized in that the casing of the boiler is constituted by easily movable panels.

11 Boiler according to claim, characterized in that the casing of the boiler is constituted by panels mounted on hinges and opening outwards.

12 Boiler according to claim, characterized in that the casing of the boiler is constituted by removable panels which can be moved radially and circularly with respect to the base of the boiler with the aid of a conveyor device comprising a radial pivoting bracket concentrically ä, the boiler and a carriage which rolls on this bracket, each gtant panel provided with a means of attachment which allows the first suspending said carriage.

13 Boiler according to claim, characterized in that the vertical tubes are placed close to each other and alternately have their upper end and their lower end bent so as to create the intervals necessary for their installation on the manifold and on the body. as well as a PassageRTI ID="0006.0275" WI="8" HE="4" LX="1646" LY="811"> for combustion gases.

14 Boiler according to claim, characterized in that the gaps between the tubes are obturated by spacer devices comprising two angle irons (45) each having an wing curved to the diameter of the adjacent tube, and means for holding these angle irons strongly applied against the tubes.

15 Boiler according to claim, characterized in that the carcass comprises a lower circle (51) lying on the field, columns (52) resting on this circle, a flat ring (53) supported by these columns, a circle (54) of diameter smaller than that of the lower circle (51) and field weight on said flat ring (53), small iron columns (55) supported by said circle (54) of smaller diameter and an upper circle (56) also placed in the field.

16 Boiler according to claim and sub-claim 15, characterized in that the intervals between the upper columns (55) are filled by Doors e, hinges each of which comprises a metal frame lined with refractory bricks .

17 Boiler according to claim and sub-claim 15, with Doors mounted between the upper posts (55), characterized in that each Door frame comprises two flat iron uprights (58) joined at the top and bottom by flat iron segments (59 and 60), as well as by curved flat irons (61 and 62) field places, one against the lower segment (59), the other at a small distance below the segment from the top (60) in order to allow the attachment of refractory bricks (63).

18 Boiler according to claim and sub-claim 15, with Doors mounted on the casing of the boiler, characterized in that the tightness of the joints between the Door frames and the casing of the boiler is ensured by a cord (65) in flexible and refractory material.