EP0498187B1 - Clay gun for a machine for plugging tapping holes in shaft furnaces - Google Patents
Clay gun for a machine for plugging tapping holes in shaft furnaces Download PDFInfo
- Publication number
- EP0498187B1 EP0498187B1 EP19920100707 EP92100707A EP0498187B1 EP 0498187 B1 EP0498187 B1 EP 0498187B1 EP 19920100707 EP19920100707 EP 19920100707 EP 92100707 A EP92100707 A EP 92100707A EP 0498187 B1 EP0498187 B1 EP 0498187B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- nose
- section
- piece
- clay
- plugging
- 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.)
- Expired - Lifetime
Links
- 239000004927 clay Substances 0.000 title claims description 12
- 238000010079 rubber tapping Methods 0.000 title description 2
- 230000000295 complement effect Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/12—Opening or sealing the tap holes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/15—Tapping equipment; Equipment for removing or retaining slag
- F27D3/1509—Tapping equipment
- F27D3/1536—Devices for plugging tap holes, e.g. plugs stoppers
Definitions
- the present invention relates to a clay cannon for a machine for plugging the tapping holes of wells, comprising a cylindrical clay chamber, a reduced section nose and a frustoconical piece connecting the clay chamber to the nose, as well as a piston. hydraulic sliding in the chamber to eject the plugging mass through the nose, in which the nose is connected to the frustoconical part by means of at least one hinge and a seal defined by the adjacent sides of the frustoconical part and nose.
- the hinge which is provided laterally between the nose and the frustoconical part, allows the opening of the barrel, by horizontal pivoting of the nose around the axis of the hinge, to offer easy access towards the interior of the nose and the frustoconical part for cleaning or maintenance purposes almost after each capping operation.
- the contact surfaces between the nose and the frustoconical part must be designed as a sealing surface defining a tight seal.
- the object of the present invention is to provide a new clay cannon of the kind described in the preamble which has an improved seal making it possible to ensure a better seal and to prevent leakage of the plugging material.
- the clay cannon proposed by the present invention is essentially characterized in that the joint is profiled in the shape of a "V" and formed by a joint surface with a pointed section and an adjacent joint surface with a hollow section. .
- the hollow section joint surface is preferably on the front side of the frustoconical part, while the pointed section joint surface will be formed by the rear side of the nose.
- a clay chamber 10 in which slides a hydraulic piston not shown to eject the plugging mass.
- This is ejected through a nose 12, in reduced section, in order to close the tap hole of an oven not shown.
- a frusto-conical part 14 forms the transition between the chamber 10 and the nose 12.
- the nose 12 is generally connected to the frusto-conical part 14 using a vertical hinge, not shown, allowing the nose to be pivoted horizontally backwards against the frusto-conical part 14. It is possible to provide such a hinge on each side, so you can open the nose from one side or the other.
- the possibility of pivoting of the nose 12 necessarily implies the presence of a seal between the nose 12 and the part 14 in order to ensure a tight closure and to prevent the leakage of plugging mass.
- the present invention proposes replacing the usual seals with a straight section with a seal with a profiled section.
- the seal 16 has, in section, a "V" shape defined by a sealing surface 18 with a point provided on the rear side of the nose 12 and by a hollow sealing surface 20 of complementary shape , provided on the frusto-conical part 14.
- the sealing surfaces could, of course, be reversed, but the arrangement shown deserves preference because the seal is less exposed to the pressure of the mass.
- the joint surfaces 18, 20 are preferably machined in separate rings fixed respectively to the wall of the nose 12 and to the wall of the part 14.
- This shape of the seal 16 provides a better seal, compared to a straight seal. Indeed, even if the wall of the nose 12 or that of the part 14 has a tendency to deformation, the seal of the joint will nevertheless be ensured, because, whatever the direction of the tendency to deformation, it will be either the interior of the seal 16, or its outer part which will be biased in the direction of strengthening the seal.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Furnace Charging Or Discharging (AREA)
- Blast Furnaces (AREA)
- Building Environments (AREA)
Description
La présente invention concerne un canon à argile pour machine à boucher les trous de coulée de fours à cuve, comprenant une chambre à argile cylindrique, un nez à section réduite et une pièce tronconique reliant la chambre à argile au nez, ainsi qu'un piston hydraulique coulissant dans la chambre pour éjecter la masse de bouchage à travers le nez, dans lequel le nez est relié à la piéce tronconique par l'intermédiaire d'au moins une charnière et d'un joint défini par les côtés adjacents de la pièce tronconique et du nez.The present invention relates to a clay cannon for a machine for plugging the tapping holes of wells, comprising a cylindrical clay chamber, a reduced section nose and a frustoconical piece connecting the clay chamber to the nose, as well as a piston. hydraulic sliding in the chamber to eject the plugging mass through the nose, in which the nose is connected to the frustoconical part by means of at least one hinge and a seal defined by the adjacent sides of the frustoconical part and nose.
La charnière, qui est prévue latéralement entre le nez et la pièce tronconique, permet l'ouverture du canon, par pivotement horizontal du nez autour de l'axe de la charnière, pour offrir un accès facile vers l'intérieur du nez et de la pièce tronconique à des fins de nettoyage ou d'entretien quasiment après chaque opération de bouchage. Pour éviter des fuites de la masse de bouchage au niveau de cette séparation, les surfaces de contact entre le nez et la pièce tronconique doivent être conçues comme surface d'étanchéité définissant un joint étanche.The hinge, which is provided laterally between the nose and the frustoconical part, allows the opening of the barrel, by horizontal pivoting of the nose around the axis of the hinge, to offer easy access towards the interior of the nose and the frustoconical part for cleaning or maintenance purposes almost after each capping operation. To avoid leakage of the plugging mass at this separation, the contact surfaces between the nose and the frustoconical part must be designed as a sealing surface defining a tight seal.
Jusqu'à présent les surfaces de contact entre la pièce tronconique et le nez du canon étaient biseautées par usinage, de façon complémentaire, pour définir un joint circulaire de section rectiligne divergent ou convergent. Pour avoir, en plus, l'assurance d'un contact ininterrompu sur toute la circonférence du joint, on a bombé légèrement une des deux surfaces de joint. Mais malgré cette précaution, on a constaté, surtout chez les grosses machines, des fuites de la masse de bouchage à travers le joint entre le nez et la partie tronconique. La raison est qu'il existe actuellement des machines qui opèrent avec une puissance de l'ordre de 600 tonnes. Or, ces puissances énormes provoquent, avec la contribution des conditions thermiques défavorables, des déformations des parois du nez et de la pièce tronconique. Il en résulte que les surfaces de joints, sous l'effet de ces déformations, finissent par ne plus être parfaitement rondes et ne peuvent plus être appliquées de manière étanche l'une sur l'autre.Up to now, the contact surfaces between the frustoconical part and the nose of the barrel have been beveled by machining, in a complementary manner, to define a circular joint of straight or divergent or convergent section. To have, in addition, the assurance of uninterrupted contact over the entire circumference of the joint, one of the two joint surfaces was slightly rounded. But despite this precaution, it has been observed, especially in large machines, that the plugging mass leaks through the seal between the nose and the frustoconical part. The reason is that there are currently machines that operate with a power of the order of 600 tonnes. However, these enormous powers cause, with the contribution of the unfavorable thermal conditions, deformations of the walls of the nose and the frustoconical part. As a result, the joint surfaces, under the effect of these deformations, end up no longer being perfectly round and can no longer be applied in a leaktight manner to one another.
Le but de la présente invention est de prévoir un nouveau canon à argile du genre décrit dans le préambule qui présente un joint amélioré permettant d'assurer une meilleure étanchéité et d'empêcher une fuite de la matière de bouchage.The object of the present invention is to provide a new clay cannon of the kind described in the preamble which has an improved seal making it possible to ensure a better seal and to prevent leakage of the plugging material.
Pour atteindre cet objectif, le canon à argile proposé par la présente invention est essentiellement caractérisé en ce que le joint est profilé en forme de "V" et formé par une surface de joint à section pointue et une surface de joint adjacente complémentaire à section creuse.To achieve this objective, the clay cannon proposed by the present invention is essentially characterized in that the joint is profiled in the shape of a "V" and formed by a joint surface with a pointed section and an adjacent joint surface with a hollow section. .
La surface de joint à section creuse se trouve, de préférence, sur le côté frontal de la pièce tronconique, tandis que la surface de joint à section pointue sera formée par le côté arrière du nez.The hollow section joint surface is preferably on the front side of the frustoconical part, while the pointed section joint surface will be formed by the rear side of the nose.
D'autres particularités et caractéristiques de l'invention ressortiront de la description d'un mode de réalisation préféré, présenté ci-dessous, à titre d'illustration, en référence à la figure unique qui présente schématiquement une coupe axiale à travers la partie frontale d'un canon à argile.Other features and characteristics of the invention will emerge from the description of a preferred embodiment, presented below, by way of illustration, with reference to the single figure which schematically shows an axial section through the front part. of a clay cannon.
Sur cette figure on aperçoit l'extrémité d'une chambre à argile 10 dans laquelle coulisse un piston hydraulique non montré pour éjecter la masse de bouchage. Celle-ci est éjectée à travers un nez 12, à section réduite, afin d'obturer le trou de coulée d'un four non représenté. Une pièce tronconique 14 forme la transition entre la chambre 10 et le nez 12. Pour pouvoir ouvrir le canon, le nez 12 est généralement relié à la pièce tronconique 14 à l'aide d'une charnière verticale non représentée, permettant au nez d'être pivoté horizontalement vers l'arrière contre la pièce tronconique 14. Il est possible de prévoir une telle charnière de chaque côté, afin de pouvoir ouvrir le nez d'un côté ou de l'autre.In this figure we see the end of a
La possibilité de pivotement du nez 12 implique nécessairement la présence d'un joint entre le nez 12 et la pièce 14 afin d'assurer une fermeture étanche et d'empêcher la fuite de masse de bouchage.The possibility of pivoting of the
Pour pouvoir assurer l'étanchéité à des pressions élevées, la présente invention propose de remplacer les joints habituels à section rectiligne par un joint à section profilée. Comme le montre la figure, le joint 16 présente, en section, une forme en "V" définie par une surface d'étanchéité 18 en pointe prévue sur le côté arrière du nez 12 et par une surface d'étanchéité creuse 20 de forme complémentaire, prévue sur la pièce tronconique 14. Les surfaces d'étanchéité pourraient, certes, être inversées, mais la disposition représentée mérite la préférence parce que le joint est moins exposé à la pression de la masse.In order to be able to seal at high pressures, the present invention proposes replacing the usual seals with a straight section with a seal with a profiled section. As shown in the figure, the
Les surfaces de joints 18, 20 sont, de préférence, usinées dans des anneaux séparés fixés respectivement sur la paroi du nez 12 et sur la paroi de la pièce 14.The
Cette forme du joint 16 assure une meilleure étanchéité, comparée à un joint droit. En effet, même si la paroi du nez 12 ou celle de la pièce 14 a tendance à la déformation, l'étanchéité du joint restera néanmoins assurée, car, quelque soit le sens de la tendance à la déformation, ce sera soit la partie intérieure du joint 16, soit sa partie extérieure qui sera sollicitée dans le sens d'un renforcement de l'étanchéité.This shape of the
Claims (2)
- Clay gun for shaft furnace tap-hole plugging machines, comprising a cylindrical clay chamber, a nose-piece with reduced cross-section and a frustoconical component connecting the clay chamber to the nose-piece, together with a hydraulic piston sliding in the chamber in order to expel the tap-hole clay through the nose-piece, in which the nose-piece is connected to the frustoconical component by means of at least one hinge and one joint defined by the adjacent sides of the frustoconical component and the nose-piece, characterised in that the joint is made in the shape of a "V" and formed by one contact surface (18) with a pointed cross-section and an adjacent complementary contact surface (20) with a hollow cross-section.
- Gun according to Claim 1, characterised in that the contact surface with hollow cross-section is located on the front side of the frustoconical component (14) and in that the contact surface with pointed cross-section is formed by the rear side of the nose-piece (12).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| LU87883A LU87883A1 (en) | 1991-01-30 | 1991-01-30 | CANNON A CLAY FOR A MACHINE FOR PLUGGING THE CASTING HOLES OF TANK OVENS |
| LU87883 | 1991-01-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0498187A1 EP0498187A1 (en) | 1992-08-12 |
| EP0498187B1 true EP0498187B1 (en) | 1995-06-14 |
Family
ID=19731275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19920100707 Expired - Lifetime EP0498187B1 (en) | 1991-01-30 | 1992-01-17 | Clay gun for a machine for plugging tapping holes in shaft furnaces |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0498187B1 (en) |
| CA (1) | CA2059810A1 (en) |
| DE (1) | DE69202871T2 (en) |
| ES (1) | ES2073190T3 (en) |
| LU (1) | LU87883A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7582272B2 (en) | 2004-03-12 | 2009-09-01 | Chevron Phillips Chemical Company Lp | Method of treating a catalytic reactor system prior to reactor servicing |
| US7868217B2 (en) | 2007-11-14 | 2011-01-11 | Chevron Phillips Chemical Company Lp | Extending the life of an aromatization catalyst |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113574186A (en) * | 2019-03-13 | 2021-10-29 | Tmt出铁测量技术有限公司 | Taphole blocking gun |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| LU71956A1 (en) * | 1975-03-03 | 1975-08-20 | ||
| US4072250A (en) * | 1975-03-28 | 1978-02-07 | Elkem-Spigerverket A/S | Apparatus for plugging holes in an electric smelting furnace or the like |
| LU85041A1 (en) * | 1983-10-07 | 1984-03-22 |
-
1991
- 1991-01-30 LU LU87883A patent/LU87883A1/en unknown
-
1992
- 1992-01-17 DE DE1992602871 patent/DE69202871T2/en not_active Expired - Fee Related
- 1992-01-17 EP EP19920100707 patent/EP0498187B1/en not_active Expired - Lifetime
- 1992-01-17 ES ES92100707T patent/ES2073190T3/en not_active Expired - Lifetime
- 1992-01-22 CA CA 2059810 patent/CA2059810A1/en not_active Abandoned
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7582272B2 (en) | 2004-03-12 | 2009-09-01 | Chevron Phillips Chemical Company Lp | Method of treating a catalytic reactor system prior to reactor servicing |
| US7868217B2 (en) | 2007-11-14 | 2011-01-11 | Chevron Phillips Chemical Company Lp | Extending the life of an aromatization catalyst |
| US8288603B2 (en) | 2007-11-14 | 2012-10-16 | Chevron Phillips Chemical Company Lp | Extending the life of an aromatization catalyst |
| US8563794B2 (en) | 2007-11-14 | 2013-10-22 | Chevron Phillips Chemical Company Lp | Extending the life of an aromatization catalyst |
Also Published As
| Publication number | Publication date |
|---|---|
| DE69202871D1 (en) | 1995-07-20 |
| CA2059810A1 (en) | 1992-07-31 |
| LU87883A1 (en) | 1992-10-15 |
| EP0498187A1 (en) | 1992-08-12 |
| DE69202871T2 (en) | 1996-02-15 |
| ES2073190T3 (en) | 1995-08-01 |
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