EP0498187A1 - 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 PDF

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Publication number
EP0498187A1
EP0498187A1 EP92100707A EP92100707A EP0498187A1 EP 0498187 A1 EP0498187 A1 EP 0498187A1 EP 92100707 A EP92100707 A EP 92100707A EP 92100707 A EP92100707 A EP 92100707A EP 0498187 A1 EP0498187 A1 EP 0498187A1
Authority
EP
European Patent Office
Prior art keywords
nose
plugging
section
joint
clay
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
Application number
EP92100707A
Other languages
German (de)
French (fr)
Other versions
EP0498187B1 (en
Inventor
Jean Metz
Fernand Roemen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Paul Wurth SA
Original Assignee
Paul Wurth SA
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Filing date
Publication date
Application filed by Paul Wurth SA filed Critical Paul Wurth SA
Publication of EP0498187A1 publication Critical patent/EP0498187A1/en
Application granted granted Critical
Publication of EP0498187B1 publication Critical patent/EP0498187B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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 tank ovens, comprising a cylindrical clay chamber, a reduced section nose and a frustoconical part 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 joint 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 an 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 a complementary 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, of reduced section, in order to close the tap hole of a furnace 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 frustoconical part 14. It is possible to provide such hinge on each side, so you can open the nose from one side or the other.
  • the possibility of pivoting 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 pointed sealing surface 18 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 remain ensured, because, whatever the direction of the tendency to deformation, it will be either the inner part of the seal 16, or its outer part which will be biased in the direction of strengthening the seal.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Blast Furnaces (AREA)
  • Building Environments (AREA)

Abstract

The present invention relates to a clay gun for machines for plugging tapping holes in shaft furnaces. Such a gun comprises a cylindrical clay chamber (10), a nose (12) of reduced cross-section and a frustoconical piece (14) connecting the clay chamber to the nose, as well as a hydraulic piston which slides into the chamber to eject the plugging mass through the nose. The nose (12) is connected to the frustoconical piece (14) by means of at least one hinge so that it is possible to open the nose by pivoting. This possibility of pivoting the nose (12) necessarily implies the presence of a joint (16) between the nose (12) and the piece (14). In the present invention, the joint (16) is profiled in the shape of a "V" and is formed by a joint surface (18) of pointed cross-section and a complementary adjacent joint surface (20) of hollow cross-section. <IMAGE>

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 tank ovens, comprising a cylindrical clay chamber, a reduced section nose and a frustoconical part 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 joint 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 an 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 converging 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 noted, especially in large machines, leaks of the plugging mass through the joint 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 sealed 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 a complementary 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 clay chamber 10 in which slides a hydraulic piston not shown to eject the plugging mass. This is ejected through a nose 12, of reduced section, in order to close the tap hole of a furnace not shown. A frusto-conical part 14 forms the transition between the chamber 10 and the nose 12. In order to be able to open the barrel, 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 frustoconical part 14. It is possible to provide such hinge on each side, so you can open the nose from one side or the other.

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 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.

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 seal 16 has, in section, a "V" shape defined by a pointed sealing surface 18 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.

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 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.

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 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 remain ensured, because, whatever the direction of the tendency to deformation, it will be either the inner part of the seal 16, or its outer part which will be biased in the direction of strengthening the seal.

Claims (2)

Canon à argile pour machines 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 pièce 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, caractérisé en ce que le joint est profilé en forme de "V" et formé par une surface de joint (18) à section pointue et une surface de joint (20) adjacente complémentaire à section creuse.Clay cannon for machines for plugging the tapping holes of wells, comprising a cylindrical clay chamber, a reduced section nose and a frustoconical part connecting the clay chamber to the nose, as well as a hydraulic piston sliding in the chamber for ejecting 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 joint defined by the adjacent sides of the frustoconical part and the nose, characterized in that the joint is profiled in the shape of a "V" and formed by a joint surface (18) with a pointed section and an adjacent joint surface (20) with a hollow section. Canon selon la revendication 1, caractérisé en ce que la surface de joint à section creuse se trouve sur le côté frontal de la pièce tronconique (14) et en ce que la surface de joint à section pointue est formée par le côté arrière du nez (12).Barrel according to claim 1, characterized in that the hollow section joint surface is on the front side of the frustoconical part (14) and in that the pointed section joint surface is formed by the rear side of the nose ( 12).
EP19920100707 1991-01-30 1992-01-17 Clay gun for a machine for plugging tapping holes in shaft furnaces Expired - Lifetime EP0498187B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LU87883 1991-01-30
LU87883A LU87883A1 (en) 1991-01-30 1991-01-30 CANNON A CLAY FOR A MACHINE FOR PLUGGING THE CASTING HOLES OF TANK OVENS

Publications (2)

Publication Number Publication Date
EP0498187A1 true EP0498187A1 (en) 1992-08-12
EP0498187B1 EP0498187B1 (en) 1995-06-14

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EP19920100707 Expired - Lifetime EP0498187B1 (en) 1991-01-30 1992-01-17 Clay gun for a machine for plugging tapping holes in shaft furnaces

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EP (1) EP0498187B1 (en)
CA (1) CA2059810A1 (en)
DE (1) DE69202871T2 (en)
ES (1) ES2073190T3 (en)
LU (1) LU87883A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20210126048A (en) * 2019-03-13 2021-10-19 티엠티 태핑-매져링-테크놀로지 에스에이알엘 tap hole plug gun

Families Citing this family (2)

* Cited by examiner, † Cited by third party
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

Citations (3)

* Cited by examiner, † Cited by third party
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

Patent Citations (3)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20210126048A (en) * 2019-03-13 2021-10-19 티엠티 태핑-매져링-테크놀로지 에스에이알엘 tap hole plug gun

Also Published As

Publication number Publication date
ES2073190T3 (en) 1995-08-01
DE69202871D1 (en) 1995-07-20
LU87883A1 (en) 1992-10-15
CA2059810A1 (en) 1992-07-31
DE69202871T2 (en) 1996-02-15
EP0498187B1 (en) 1995-06-14

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