FR2460380A1 - Variable converging conduit for chimney top - has flow control vanes operated by rod from ground to vary orifice dependent on number of boilers in use - Google Patents
Variable converging conduit for chimney top - has flow control vanes operated by rod from ground to vary orifice dependent on number of boilers in use Download PDFInfo
- Publication number
- FR2460380A1 FR2460380A1 FR7917508A FR7917508A FR2460380A1 FR 2460380 A1 FR2460380 A1 FR 2460380A1 FR 7917508 A FR7917508 A FR 7917508A FR 7917508 A FR7917508 A FR 7917508A FR 2460380 A1 FR2460380 A1 FR 2460380A1
- Authority
- FR
- France
- Prior art keywords
- flaps
- chimney
- boilers
- articulated
- rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L17/00—Inducing draught; Tops for chimneys or ventilating shafts; Terminals for flues
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Incineration Of Waste (AREA)
Abstract
Description
La présente invention a pour objet un dispositif de conduit convergent disposé au sommet d'une cheminée. The subject of the present invention is a converging flue device arranged at the top of a chimney.
La réglementation, en matière de pollution atmosphérique, impose de respecter des vitessesminimales d'éjection des gaz de combustion, en fonction de la puissance de chauffe installée. Cette obligation, dans le cas d'une installation comprenant plusieurs chaudières, entraîne la construction d'autant de conduits de fumée que de chaudières, de façon à respecter cette vitesse quel que soit l'ordre de fonctionnement des chaudières. The regulations on atmospheric pollution require that minimum combustion gas ejection speeds be observed, depending on the heating power installed. This obligation, in the case of an installation comprising several boilers, entails the construction of as many smoke ducts as boilers, so as to respect this speed regardless of the operating order of the boilers.
Le dispositif suivant l'invention a pour but de permettre l'évacuation des gaz de combustion de plusieurs chaudières par l'intermédia ire d'un seul conduit. Conformément à l'invention, le conduit convergent disposé au sommet d'une cheminée présente une section de passage des gaz qui varie en fonction du nombre des chaudières en fonctionnement afin de modifier la vitesse des gaz et d'atteindre la vitesse optimale. The purpose of the device according to the invention is to allow the evacuation of the combustion gases from several boilers via a single conduit. According to the invention, the converging duct disposed at the top of a chimney has a gas passage section which varies as a function of the number of boilers in operation in order to modify the gas speed and reach the optimal speed.
Du fait que la section de passage des gaz à travers le conduit convergent est plus ou moins grande, ceci a pour effet d'accélérer plus ou moins la vitesse des gaz, de façon à atteindre la vitesse minimale imposée. Because the cross-section of the gases passing through the converging duct is more or less large, this has the effect of accelerating more or less the speed of the gases, so as to reach the minimum speed imposed.
Suivant une autre caractéristique de l'invention, le conduit convergent est constitué de deux jeux de volets qui sont articulés à leur base suivant un axe horizontal fixe sur un organe de support solidaire de la cheminée, un premier jeu de volets étant relié par sa partie supérieure à un moyen de manoeuvre commandé à partir du sol, alors que le deuxième jeu de volets est en appui sur le premier jeu de volets par les bords latéraux desdits volets. According to another characteristic of the invention, the converging duct consists of two sets of flaps which are articulated at their base along a fixed horizontal axis on a support member integral with the chimney, a first set of flaps being connected by its part greater than an operating means controlled from the ground, while the second set of flaps is supported on the first set of flaps by the lateral edges of said flaps.
D'autres caractéristiques et avantages de l'invention seront mieux compris à la lecture de la description qui va suivre d'un mode de réalisation et en se référant aux dessins annexés, sur lesquels
- la figure 1 est une vue en perspective du conduit convergent suivant l'invention
- la figure 2 est une vue en élévation et en coupe longitudinale du conduit convergent suivant l'invention ;
- la figure 3 est une vue en plan du conduit convergent ; et
- la figure 4 est une vue de détail montrant l'articulation d'un volet.Other characteristics and advantages of the invention will be better understood on reading the following description of an embodiment and with reference to the accompanying drawings, in which
- Figure 1 is a perspective view of the converging conduit according to the invention
- Figure 2 is an elevational view in longitudinal section of the converging conduit according to the invention;
- Figure 3 is a plan view of the converging duct; and
- Figure 4 is a detail view showing the articulation of a flap.
Aux figures 1, 2 et 3,on on a représenté la partie supérieure d'une cheminée 1 dans laquelle est monté un conduit convergent suivant l'invention qui est constitué d'un jeu de volets 2, 2a, 2b et d'un jeu de volets 3, 3a, 3b qui sont articulés à leur base suivant un axe horizontal fixe x, xl sur un organe de support 4 constitué d'une couronne circulaire fixée sur la cheminée 1 et dont le bord intérieur est relié à la cheminée par un tronc de cûne 5. Figures 1, 2 and 3, there is shown the upper part of a chimney 1 in which is mounted a converging duct according to the invention which consists of a set of flaps 2, 2a, 2b and a set flaps 3, 3a, 3b which are articulated at their base along a fixed horizontal axis x, xl on a support member 4 consisting of a circular crown fixed to the chimney 1 and whose inner edge is connected to the chimney by a trunk 5.
Le premier jeu de volets 2, 2a, 2b est relié par sa partie supérieure à un moyen de manoeuvre commandé à partir du sol qui sera décrit plus en détail ultérieurement, alors que le deuxième jeu de volets 3, 3a, 3b est en appui sur le premier jeu par les bords latéraux MP des volets 2, 2a, 2b. Les volets 3, 3a, 3b accompagnent le mouvement des volets 2, 2a, 2b qui comportent des crochets 6 engagés sur le bord supérieur des volets 3, 3a, 3b.Les volets 2, 2a, 2b comportent à leur partie supérieure une chape 7 (figures 2, 3) munie d'un axe 8 sur lequel est articulée l'une des extrémités d'une biellette 9 dont l'autre extrémité est articulée sur un axe 10 d'une chape 11 fixée à la partie supérieure d'une tige de manoeuvre 12 s'étendant sur toute la hauteur de la cheminée 1 et susceptible d'être actionnée à partir de la base de la cheminée pour lui imprimer un déplacement axial. La partie supérieure de la tige 12 est guidée dans un manchon 13 fixé au moyen de bras 14 sur la partie tronconique de support 5. The first set of flaps 2, 2a, 2b is connected by its upper part to an operating means controlled from the ground which will be described in more detail later, while the second set of flaps 3, 3a, 3b is supported on the first set by the lateral edges MP of the flaps 2, 2a, 2b. The flaps 3, 3a, 3b accompany the movement of the flaps 2, 2a, 2b which have hooks 6 engaged on the upper edge of the flaps 3, 3a, 3b. The flaps 2, 2a, 2b have at their upper part a yoke 7 (Figures 2, 3) provided with an axis 8 on which is articulated one of the ends of a link 9 whose other end is articulated on an axis 10 of a yoke 11 fixed to the upper part of a operating rod 12 extending over the entire height of the chimney 1 and capable of being actuated from the base of the chimney to impart axial displacement thereto. The upper part of the rod 12 is guided in a sleeve 13 fixed by means of arms 14 on the frustoconical support part 5.
Suivant un mode particulier de réalisation, l'articulation des volets 2 > 2a, 2b et 3, 3a, 3b, est obtenue au moyen de pattes 15 (figure 4) prévues à la partie inférieure des volets et engagées dans des orifices 16 ménagés dans la couronne circulaire 4, lesdites pattes 15 étant repliées à 90" par rapport à la surface des volets. Le dispositif suivant l'invention fonctionne de la manière suivante
Lorsque le conduit convergent se trouve dans la position représentée en trait interrompu à la figure 3, la section de passage est minimale et il suffit d'agir sur la tige 12 dans le sens de la flèche F pour provoquer au moyen des biellettes 9 le pivotement des volets 2, 2a, 2b suivant la flèche F1, ainsi que celui des volets 3, 3a, 3b qui sont en appui sur les volets 2, 2a, 2b.Ce déplacement des volets 2, 2a, 2b et 3, 3a, 3b qui forment un tronc de pyramide et dont la grande base est fixe provoque l'augmentation de la section de passage des gaz. Pour réduire la section de passage et augmenter la vitesse des gaz de combustion,il suffit de déplacer la tige 12 en sens inverse de la flèche F. La manoeuvre consiste donc, en fonction du nombre de chaudières en fonctionnement, d'ouvrir plus ou moins le passage au sommet de la cheminée.According to a particular embodiment, the articulation of the flaps 2> 2a, 2b and 3, 3a, 3b, is obtained by means of lugs 15 (FIG. 4) provided at the lower part of the flaps and engaged in orifices 16 formed in the circular crown 4, said tabs 15 being folded 90 "relative to the surface of the flaps. The device according to the invention operates in the following manner
When the converging duct is in the position shown in broken lines in FIG. 3, the passage section is minimal and it suffices to act on the rod 12 in the direction of the arrow F to cause the pivoting by means of the links 9 flaps 2, 2a, 2b along arrow F1, as well as that of flaps 3, 3a, 3b which are supported on flaps 2, 2a, 2b. This movement of flaps 2, 2a, 2b and 3, 3a, 3b which form a pyramid trunk and whose large base is fixed causes the increase in the cross section of the gases. To reduce the passage section and increase the speed of the combustion gases, it suffices to move the rod 12 in the opposite direction to the arrow F. The operation therefore consists, depending on the number of boilers in operation, of opening more or less the passage at the top of the chimney.
Cette manoeuvre peut être manuelle et conduite sous la responsabilité du préposé à la chaufferie ; elle peut aussi être automatisée, soit suivant le débit de combustible arrivant à la chaufferie, soit suivant la vitesse des gaz mesurée à la sortie de la cheminée. This operation can be manual and carried out under the responsibility of the boiler room attendant; it can also be automated, either according to the flow of fuel arriving at the boiler room, or according to the speed of the gases measured at the outlet of the chimney.
Bien entendu, diverses modifications peuvent être apportées par l'homme de l'art aux procédés qui viennent d'être décrits sans sortir du cadre de l'invention. Of course, various modifications can be made by those skilled in the art to the methods which have just been described without departing from the scope of the invention.
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7917508A FR2460380A1 (en) | 1979-07-05 | 1979-07-05 | Variable converging conduit for chimney top - has flow control vanes operated by rod from ground to vary orifice dependent on number of boilers in use |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7917508A FR2460380A1 (en) | 1979-07-05 | 1979-07-05 | Variable converging conduit for chimney top - has flow control vanes operated by rod from ground to vary orifice dependent on number of boilers in use |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2460380A1 true FR2460380A1 (en) | 1981-01-23 |
FR2460380B1 FR2460380B1 (en) | 1982-12-10 |
Family
ID=9227566
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7917508A Granted FR2460380A1 (en) | 1979-07-05 | 1979-07-05 | Variable converging conduit for chimney top - has flow control vanes operated by rod from ground to vary orifice dependent on number of boilers in use |
Country Status (1)
Country | Link |
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FR (1) | FR2460380A1 (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE51649C (en) * | p deghilage in Brüssel, 80 Rue Renkin; Vevr_ treter: G. brandt in Berlin SW., Kochstrafse ^ | Rotary chimney attachment | ||
FR1477098A (en) * | 1966-04-22 | 1967-04-14 | British Petroleum Co | Adjustable hat fireplace |
DE2360264A1 (en) * | 1973-11-23 | 1975-05-28 | Sulzer Ag | FLUE CHIMNEY WITH CHANGEABLE FLUE FLUE THROTTLE DEVICE |
CH572190A5 (en) * | 1973-11-23 | 1976-01-30 | Sulzer Ag | |
US4095514A (en) * | 1976-11-08 | 1978-06-20 | Airtek Corporation | Air pollution control device |
-
1979
- 1979-07-05 FR FR7917508A patent/FR2460380A1/en active Granted
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE51649C (en) * | p deghilage in Brüssel, 80 Rue Renkin; Vevr_ treter: G. brandt in Berlin SW., Kochstrafse ^ | Rotary chimney attachment | ||
FR1477098A (en) * | 1966-04-22 | 1967-04-14 | British Petroleum Co | Adjustable hat fireplace |
DE2360264A1 (en) * | 1973-11-23 | 1975-05-28 | Sulzer Ag | FLUE CHIMNEY WITH CHANGEABLE FLUE FLUE THROTTLE DEVICE |
CH572190A5 (en) * | 1973-11-23 | 1976-01-30 | Sulzer Ag | |
US4095514A (en) * | 1976-11-08 | 1978-06-20 | Airtek Corporation | Air pollution control device |
Also Published As
Publication number | Publication date |
---|---|
FR2460380B1 (en) | 1982-12-10 |
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