WO1993000579A1 - Core extracting device in a metallurgical blast furnace or the like - Google Patents

Core extracting device in a metallurgical blast furnace or the like Download PDF

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Publication number
WO1993000579A1
WO1993000579A1 PCT/FR1992/000541 FR9200541W WO9300579A1 WO 1993000579 A1 WO1993000579 A1 WO 1993000579A1 FR 9200541 W FR9200541 W FR 9200541W WO 9300579 A1 WO9300579 A1 WO 9300579A1
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WO
WIPO (PCT)
Prior art keywords
tube
working unit
coring device
blast furnace
cutting
Prior art date
Application number
PCT/FR1992/000541
Other languages
French (fr)
Inventor
Jean-Louis Bailly
Hervé Pierret
Georges Weber
Original Assignee
Techmetal Promotion
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Techmetal Promotion filed Critical Techmetal Promotion
Publication of WO1993000579A1 publication Critical patent/WO1993000579A1/en

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/24—Test rods or other checking devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/04—Devices for withdrawing samples in the solid state, e.g. by cutting
    • G01N1/08—Devices for withdrawing samples in the solid state, e.g. by cutting involving an extracting tool, e.g. core bit
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/10—Devices for withdrawing samples in the liquid or fluent state
    • G01N1/12—Dippers; Dredgers
    • G01N1/125—Dippers; Dredgers adapted for sampling molten metals

Definitions

  • the present invention relates to a coring device intended to take samples of the materials found in a steel blast furnace or the like to analyze the composition as well as the structure.
  • Coring devices of this type currently used include a movable chassis on which is mounted a working unit which can move in translation on the chassis, said working unit comprising a cylindrical tube movable in rotation on itself and equipped with a cutting ring at one of its ends and able to penetrate the material to be cored by carrying out a combined movement of translation on the chassis and rotation on itself.
  • This coring operation is intended to take a material sample in a blast furnace at a standstill, with a view to carrying out analyzes and verifications of the composition of the material found in the blast furnace.
  • This known coring device has the drawback that the sample taken undergoes rotations on itself as well as friction against the open end of the tube, which modifies its structure and composition. As a result, the analyzes made on the sample thus collected are not very representative of the actual state of the material in the blast furnace.
  • the recovery of the core for analysis purposes can generally only be done by longitudinal cutting of the tube, which leads to a prohibitive cost of each coring, as well as to risks. to further modify the structure of the sample during this cutting.
  • the present invention therefore proposes to produce a coring device which makes it possible to obtain a practically intact sample, that is to say one which has undergone only a minimum of disturbances during its sampling.
  • the invention therefore relates to a coring device for the materials contained in a steel blast furnace or the like, comprising a chassis on which is mounted a working unit which can move in translation on the chassis, said working unit comprising a first tube cylindrical equipped at one of its ends with a cutting tool to separate, during the advancement of the work unit, the core taken from the neighboring materials.
  • the device is characterized in that it comprises a second cylindrical tube, fixed in rotation and movable in axial translation inside the first tube and in that the cutting tool consists of a crown covering the ends of the two tubes, detachably fixed on the first tube, and whose internal diameter is at least slightly smaller than the internal diameter of the second tube.
  • the formed core does not undergo disturbance in translation or rotation friction in the inner tube, and its structure therefore corresponds to that of the material from which it was taken.
  • the crown is removable, the inner tube can be easily removed from the outer tube, after removal from the working unit, to be sent as is to the analysis laboratory. It is enough to replace the inner tube to be able to immediately start another coring.
  • the inner tube may be of reduced thickness since it does not undergo any force, nor penetration, nor friction, during the coring. It follows that this tube can be more easily cut to analyze the carrot.
  • the first tube is rotated and the cutting ring has a front face provided with cutting teeth.
  • the cutting ring has a circular front edge.
  • the working unit then preferably comprises a percussion system acting on the first tube which can be fixed or also driven in rotation.
  • the cutting ring constitutes a centering support for the free end of the inner tube.
  • the cutting ring is removably mounted on the free end of the first tube by means for example of removable radial pins. This arrangement facilitates the extraction operation of the inner tube when the coring operation is completed, the pins can be easily put in place and extracted with a hammer.
  • the second inner tube consists of two assembled half-shells. Thanks to this arrangement, the carrot can be removed easily.
  • Figure 1 is an axial mid-sectional view, longitudinal mid-elevation of an embodiment of the coring device according to the invention.
  • Figure 2 is a detailed view of the end of the tubes according to a second variant.
  • FIG. 1 shows a coring device in a steel blast furnace or the like (not shown), which comprises a frame X on which is mounted a working unit Y which can move in translation on the frame X.
  • a coring device in a steel blast furnace or the like (not shown), which comprises a frame X on which is mounted a working unit Y which can move in translation on the frame X.
  • the chassis is shown fixed relative to the ground, but that preferably this chassis is mounted on wheels and motorized, in a manner known per se, to facilitate movement around the blast furnace.
  • the chassis comprises a slide 1 resting on uprights 10 and comprising at its end contiguous with the blast furnace, a support 2.
  • the working unit Y can move in translation on the chassis X and comprises a cylindrical tube 3 movable in rotation on itself and equipped with a crown 8 provided with cutting teeth 9 at its end adjacent to the blast furnace.
  • the crown 8 is fixed to the tube 3 by means of removable radial pins 11.
  • the tube 3 is supported on the support 2 on which it can slide while turning around its axis.
  • the bottom of the outer tube 3, opposite its end carrying the cutting ring 8, 9, is fixed to an axis 4 of rotary drive mounted in a bearing 5 and coupled to motorized means, constituted for example as represented by a motor 6 and a sprocket and chain system 7.
  • the bearing 5 is supported on a support 15 constituting a carriage movable in translation at the same time as the assembly of the working unit Y, on the slide 1 and the terminal support 2, by means known per se and not shown .
  • the working unit Y comprises a second cylindrical tube 12 fixed in rotation and mounted movable in translation in the first rotary tube 3.
  • the cutting ring 8, 9 covers the end of the internal tube 12, the internal diameter d of the ring 8 being slightly smaller than the internal diameter of the second tube 12.
  • the cutting ring 8, 9 therefore constitutes a support ensuring the centering of the internal tube 12 on the axis of the rotary tube 3, by maintaining its free end.
  • the axis 4 for driving the outer tube 3 is hollow and crossed by an axial rod 13, one end of which is fixed to the bottom 16 of the inner tube 12. The end of the rod 13 adjoining the bottom penetrates for this purpose into a housing formed in the bottom 16, itself supported by a bearing 17 integral with the outer tube 3.
  • the end of the rod 13 is fixed to the bottom, for example by a key, as shown.
  • the axial rod 13 allows the tube 12 to move in translation inside the outer tube 3.
  • the end of the rod 13 opposite the bottom 16 is slidably mounted without freedom of rotation in a part 14 integral with the carriage constituted by the support 15.
  • the cutting ring 8 covers the free ends of the two coaxial tubes 3 and 12, and therefore has an annular housing on its face opposite to the cutting teeth 9, housing in which the ends of the coaxial tubes 3, 12 can engage.
  • the interior wall of this annular housing thus constitutes a support for the interior tube 12.
  • the displacement in translation is controlled on the slide 1 and on the support 2 of the assembly of the working unit Y, that is to say of the carriage 15, of the drive 6, 7 and tubes 3, 12 to the right of the drawing, so that the cutting teeth 9 penetrate into the load C of the blast furnace.
  • the mechanism is to say of the carriage 15, of the drive 6, 7 and tubes 3, 12 to the right of the drawing, so that the cutting teeth 9 penetrate into the load C of the blast furnace.
  • the sample E penetrates inside the tube 12, which it ends up filling when the whole unit Y has reached the end of its translational travel.
  • the working unit Y is moved in translation in opposite direction, so as to release it from the blast furnace.
  • the invention therefore makes it possible to obtain a core E which is not rotated during its removal and therefore retains the exact structure of the material C from which it was removed.
  • the friction suffered by the sample E is reduced to a minimum at the level of the crown 8, so that this core E undergoes very little disturbance and modification. Because the crown 8 covers the end of the two tubes 3, 12, it is not possible for elements of material to enter the space between the two tubes.
  • FIG. 2 represents a variant of the invention, in particular usable in coring without rotation of the outer tube 3 ′, also called coring by punching, with percussion, or also in rotational percussion.
  • the percussion or roto-percussion means are conventional means such as those used for example on hole punches, and have not been shown. Suffice it to say that these means are adapted to act on the outer tube 3 '.
  • the driving crown 8 ′ comprises a continuous circular front edge 19 forming a tapered cutting edge 20 facilitating the penetration into the material by the only pushing force exerted on the outer tube.
  • the crown is in abutment on the front face 21 of the outer tube 3 'which it completely covers.
  • the crown is extended inside the tube 3 ′ by a cylindrical part 22, provided, on the side opposite the cutting edge 20, with an internal shoulder 23 which centers the inner tube 12 * and serves as an axial stop. It will be noted that this arrangement is particularly suitable in the case where the inner tube is formed of two half-shells, because, held by the shoulder, the half-shells cannot deviate from one another.
  • the crown is held on the outer tube 3 by removable radial pins 11 '.
  • a sealing braid 24, inserted between the two tubes, against the rear face of the crown, provides additional sealing.
  • the internal tube 12 ′ is notably thinner than the external tube 3 •, which makes it possible to reduce the total thickness of the assembly and therefore of the cutting crown, and thus to limit the necessary penetration force. .

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
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  • General Physics & Mathematics (AREA)
  • Biochemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Hydrology & Water Resources (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Organic Chemistry (AREA)
  • Metallurgy (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

A core extracting device for materials contained in a metallurgical blast furnace or the like includes a support frame (X) having translatably mounted thereon a working unit (Y) comprising a first cylindrical tube (3) which is provided at one end with a cutting tool (8, 9) for separating the core from the surrounding materials when the working unit is advanced. The device comprises a second, rotationally fixed and axially translatable cylindrical tube (12) within the first tube (3), and the cutting tool (8, 9) consists of a ring fitted over the ends of both tubes and releasably fixed to the first, said ring having an at least slightly smaller internal diameter than that of the second tube. By means of the device, a virtually intact, undisturbed sample may be obtained.

Description

DISPOSITIF DE CAROTTAGE DANS UN HAUT FOURNEAU SIDERURGIQUE OU ANALOGUE CORING DEVICE IN A STEEL BLAST OR THE LIKE
La présente Invention concerne un dispositif de carottage destiné à prélever des échantillons des matériaux se trouvant dans un haut fourneau sidérurgique ou analogue pour en analyser la composition ainsi que la structure.The present invention relates to a coring device intended to take samples of the materials found in a steel blast furnace or the like to analyze the composition as well as the structure.
Les dispositifs de carottage de ce type actuellement utilisés comprennent un châssis déplaçable sur lequel est montée une unité de travail pouvant se mouvoir en translation sur le châssis, ladite unité de travail comportant un tube cylindrique mobile en rotation sur lui-même et équipé d'une couronne de découpe à l'une de ses extrémités et pouvant pénétrer dans la matière à carotter en effectuant un mouvement combiné de translation sur le châssis et de rotation sur lui-même.Coring devices of this type currently used include a movable chassis on which is mounted a working unit which can move in translation on the chassis, said working unit comprising a cylindrical tube movable in rotation on itself and equipped with a cutting ring at one of its ends and able to penetrate the material to be cored by carrying out a combined movement of translation on the chassis and rotation on itself.
Cette opération de carottage est destinée à effectuer un prélèvement de matière dans un haut fourneau à l'arrêt, en vue d'effectuer des analyses et des vérifications de la composition de la matière se trouvant dans le haut fourneau.This coring operation is intended to take a material sample in a blast furnace at a standstill, with a view to carrying out analyzes and verifications of the composition of the material found in the blast furnace.
Ce dispositif de carottage connu présente l'inconvénient résidant dans le fait que l'échantillon prélevé subit des rotations sur lui-même ainsi que des frottements contre l'extrémité ouverte du tube, ce qui modifie sa structure et sa composition. Il en résulte que les analyses faites sur l'échantillon ainsi recueilli ne sont pas très représentatives de l'état réel de la matière se trouvant dans le haut fourneau.This known coring device has the drawback that the sample taken undergoes rotations on itself as well as friction against the open end of the tube, which modifies its structure and composition. As a result, the analyzes made on the sample thus collected are not very representative of the actual state of the material in the blast furnace.
De plus, la récupération de la carotte aux fins d'analyse ne peut généralement se faire que par découpe longitudinale du tube ce qui conduit à un coût prohibitif de chaque carottage, ainsi qu'à des risques de modifier encore la structure de l'échantillon lors de cette découpe.In addition, the recovery of the core for analysis purposes can generally only be done by longitudinal cutting of the tube, which leads to a prohibitive cost of each coring, as well as to risks. to further modify the structure of the sample during this cutting.
On connaît par ailleurs, par le document FRWe also know from the document FR
2617599, un dispositif de carottage dans un haut fourneau dans lequel la sonde de carottage est constituée par un tube fixe en rotation, introduit par simple poussée dans le matériau dont on veut prélever un échantillon. Ce dispositif nécessite un effort de poussée très important qui implique une structure de support de grande dimension et un ancrage de celle-ci sur la paroi du haut fourneau. De ce fait un tel ensemble, décrit par exemple dans le document FR2617599, a coring device in a blast furnace in which the coring probe consists of a fixed rotating tube, introduced by simple push into the material from which it is desired to take a sample. This device requires a very large thrust force which involves a large support structure and an anchoring thereof on the wall of the blast furnace. Therefore such an assembly, described for example in the document FR
2606035, ne peut être déplacé pour effectuer des carottages dans des zones différentes du haut-fourneau, et ne répond pas à la mobilité maintenant requise.2606035, cannot be moved to perform core drilling in different areas of the blast furnace, and does not meet the mobility now required.
La présente invention propose donc de réaliser un dispositif de carottage qui permette d'obtenir un échantillon pratiquement intact c'est-à-dire qui n'ait subi qu'un minimum de perturbations durant son prélèvement.The present invention therefore proposes to produce a coring device which makes it possible to obtain a practically intact sample, that is to say one which has undergone only a minimum of disturbances during its sampling.
L'invention a donc pour objet un dispositif de carottage des matières contenues dans un haut fourneau sidérurgique ou analogue, comprenant un châssis sur lequel est montée une unité de travail pouvant se mouvoir en translation sur le châssis, ladite unité de travail comportant un premier tube cylindrique équipé à l'une des ses extrémités d'un outil de découpe pour séparer, lors de l'avancée de l'unité de travail, la carotte prélevée des matières avoisinantes. Selon l'invention, le dispositif est caractérisé en ce qu'il comporte un deuxième tube cylindrique, fixe en rotation et déplaçable en translation axiale à l'intérieur du premier tube et en ce que l'outil de découpe est constitué d'une couronne coiffant les extrémités des deux tubes, fixée de manière démontable sur le premier tube, et dont le diamètre intérieur est au moins légèrement plus petit que le diamètre intérieur du deuxième tube.The invention therefore relates to a coring device for the materials contained in a steel blast furnace or the like, comprising a chassis on which is mounted a working unit which can move in translation on the chassis, said working unit comprising a first tube cylindrical equipped at one of its ends with a cutting tool to separate, during the advancement of the work unit, the core taken from the neighboring materials. According to the invention, the device is characterized in that it comprises a second cylindrical tube, fixed in rotation and movable in axial translation inside the first tube and in that the cutting tool consists of a crown covering the ends of the two tubes, detachably fixed on the first tube, and whose internal diameter is at least slightly smaller than the internal diameter of the second tube.
Du fait que le tube intérieur ne tourne pas sur lui-même et que son diamètre intérieur est au moins légèrement plus grand que celui de la couronne, la carotte formée ne subit pas de perturbation de frottement de translation ou de rotation dans le tube intérieur, et sa structure correspond donc à celle de la matière où elle a été prélevée.Because the inner tube does not rotate on itself and its inner diameter is at least slightly larger than that of the crown, the formed core does not undergo disturbance in translation or rotation friction in the inner tube, and its structure therefore corresponds to that of the material from which it was taken.
Par ailleurs du fait que la couronne est démontable, le tube intérieure peut être facilement extrait du tube extérieur, après retrait de l'unité de travail, pour être envoyé tel quel au laboratoire d'analyse. Il suffit de remplacer le tube intérieur pour pouvoir aussitôt recommencer un autre carottage.Furthermore, because the crown is removable, the inner tube can be easily removed from the outer tube, after removal from the working unit, to be sent as is to the analysis laboratory. It is enough to replace the inner tube to be able to immediately start another coring.
Enfin, le tube intérieur peut être d'épaisseur réduite puisqu'il ne subit pas d'effort, ni de pénétration, ni de frottement, lors du carottage. Il s'ensuit que ce tube peut être plus facilement découpé pour analyser la carotte.Finally, the inner tube may be of reduced thickness since it does not undergo any force, nor penetration, nor friction, during the coring. It follows that this tube can be more easily cut to analyze the carrot.
Selon une première variante de l'invention, le premier tube est entraîné en rotation et la couronne de découpe comporte une face frontale pourvue de dents de découpe.According to a first variant of the invention, the first tube is rotated and the cutting ring has a front face provided with cutting teeth.
Selon une autre variante, la couronne de découpe comporte une arête circulaire frontale. L'unité de travail comporte alors préférentiellement un système à percussion agissant sur le premier tube qui peut être fixe ou également entraîné en rotation.According to another variant, the cutting ring has a circular front edge. The working unit then preferably comprises a percussion system acting on the first tube which can be fixed or also driven in rotation.
Selon une autre caractéristique de l'invention, la couronne de découpe constitue un support centreur pour l'extrémité libre du tube intérieur.According to another characteristic of the invention, the cutting ring constitutes a centering support for the free end of the inner tube.
Selon d'autres caractéristiques de l'invention : - la couronne de découpe est montée de manière amovible sur l'extrémité libre du premier tube au moyen par exemple de chevilles radiales amovibles. Cette disposition facilite l'opération d'extraction du tube intérieur lorsque l'opération de carottage est terminée, les chevilles pouvant être facilement mises en place et extraites au marteau.According to other characteristics of the invention: - The cutting ring is removably mounted on the free end of the first tube by means for example of removable radial pins. This arrangement facilitates the extraction operation of the inner tube when the coring operation is completed, the pins can be easily put in place and extracted with a hammer.
- le deuxième tube intérieur est constitué de deux demi-coquilles assemblées. Grâce à cette disposition, la carotte peut être dégagée de manière aisée.- the second inner tube consists of two assembled half-shells. Thanks to this arrangement, the carrot can be removed easily.
D'autres caractéristiques et avantages de l'invention ressortiront de la description qui suit de deux modes de réalisation non limitatifs de l'invention, en référence aux dessins annexés.Other characteristics and advantages of the invention will emerge from the following description of two nonlimiting embodiments of the invention, with reference to the accompanying drawings.
La figure 1 est une vue mi-coupe axiale, mi- élévation longitudinale d'un mode de réalisation du dispositif de carottage selon l'invention.Figure 1 is an axial mid-sectional view, longitudinal mid-elevation of an embodiment of the coring device according to the invention.
La figure 2 est une vue de détail de l'extrémité des tubes selon une deuxième variante.Figure 2 is a detailed view of the end of the tubes according to a second variant.
On voit au dessin de la figure 1 un dispositif de carottage dans un haut fourneau sidérurgique ou analogue (non représenté) , qui comprend un châssis X sur lequel est monté une unité de travail Y pouvant se mouvoir en translation sur le châssis X. On notera que, par souci de simplification, le châssis est représenté fixe par rapport au sol, mais que préférentiellement ce châssis est monté sur roues et motorisé, de manière connue en soi, pour faciliter le déplacement autour du haut fourneau.The drawing in FIG. 1 shows a coring device in a steel blast furnace or the like (not shown), which comprises a frame X on which is mounted a working unit Y which can move in translation on the frame X. It will be noted that, for the sake of simplification, the chassis is shown fixed relative to the ground, but that preferably this chassis is mounted on wheels and motorized, in a manner known per se, to facilitate movement around the blast furnace.
Le châssis comprend une glissière 1 reposant sur des montants 10 et comportant à son extrémité contigùe au haut fourneau, un support 2. L'unité de travail Y peut se mouvoir en translation sur le châssis X et comporte un tube cylindrique 3 mobile en rotation sur lui-même et équipé d'une couronne 8 munie de dents de découpe 9 à son extrémité adjacente au haut fourneau. La couronne 8 est fixée sur le tube 3 au moyen de chevilles radiales 11 amovibles. Le tube 3 prend appui sur le support 2 sur lequel il peut coulisser tout en tournant autour de son axe. Le fond du tube extérieur 3, opposé à son extrémité portant la couronne de découpe 8, 9, est fixé à un axe 4 d'entraînement en rotation monté dans un palier 5 et couplé à des moyens motorisés, constitués par exemple comme représenté par un moteur 6 et un système 7 à pignons et chaîne. Le palier 5 prend appui sur un support 15 constituant un chariot déplaçable en translation en même temps que l'ensemble de l'unité de travail Y, sur la glissière 1 et le support terminal 2, grâce à des moyens connus en soi et non représentés.The chassis comprises a slide 1 resting on uprights 10 and comprising at its end contiguous with the blast furnace, a support 2. The working unit Y can move in translation on the chassis X and comprises a cylindrical tube 3 movable in rotation on itself and equipped with a crown 8 provided with cutting teeth 9 at its end adjacent to the blast furnace. The crown 8 is fixed to the tube 3 by means of removable radial pins 11. The tube 3 is supported on the support 2 on which it can slide while turning around its axis. The bottom of the outer tube 3, opposite its end carrying the cutting ring 8, 9, is fixed to an axis 4 of rotary drive mounted in a bearing 5 and coupled to motorized means, constituted for example as represented by a motor 6 and a sprocket and chain system 7. The bearing 5 is supported on a support 15 constituting a carriage movable in translation at the same time as the assembly of the working unit Y, on the slide 1 and the terminal support 2, by means known per se and not shown .
L'unité de travail Y comprend un deuxième tube cylindrique 12 fixe en rotation et monté mobile en translation dans le premier tube rotatif 3. La couronne de découpe 8, 9 coiffe l'extrémité du tube intérieur 12, le diamètre intérieur d de la couronne 8 étant légèrement plus petit que le diamètre intérieur du deuxième tube 12. La couronne de découpe 8, 9 constitue donc un support assurant le centrage du tube intérieur 12 sur l'axe du tube rotatif 3, par maintien de son extrémité libre. L'axe 4 d'entraînement du tube extérieur 3 est creux et traversé par une tige axiale 13 dont une extrémité est fixée au fond 16 du tube intérieur 12. L'extrémité de la tige 13 attenante au fond pénètre à cet effet dans un logement ménagé dans le fond 16, lui-même supporté par un palier 17 solidaire du tube extérieur 3. L'extrémité de la tige 13 est fixée au fond par exemple par une clavette, comme représenté. La tige axiale 13 permet de déplacer en translation le tube 12 à l'intérieur du tube extérieur 3. L'extrémité de la tige 13 opposée au fond 16 est montée à coulissement sans liberté de rotation dans une pièce 14 solidaire du chariot constitué par le support 15.The working unit Y comprises a second cylindrical tube 12 fixed in rotation and mounted movable in translation in the first rotary tube 3. The cutting ring 8, 9 covers the end of the internal tube 12, the internal diameter d of the ring 8 being slightly smaller than the internal diameter of the second tube 12. The cutting ring 8, 9 therefore constitutes a support ensuring the centering of the internal tube 12 on the axis of the rotary tube 3, by maintaining its free end. The axis 4 for driving the outer tube 3 is hollow and crossed by an axial rod 13, one end of which is fixed to the bottom 16 of the inner tube 12. The end of the rod 13 adjoining the bottom penetrates for this purpose into a housing formed in the bottom 16, itself supported by a bearing 17 integral with the outer tube 3. The end of the rod 13 is fixed to the bottom, for example by a key, as shown. The axial rod 13 allows the tube 12 to move in translation inside the outer tube 3. The end of the rod 13 opposite the bottom 16 is slidably mounted without freedom of rotation in a part 14 integral with the carriage constituted by the support 15.
La couronne de découpe 8 coiffe les extrémités libres des deux tubes coaxiaux 3 et 12, et présente donc un logement annulaire sur sa face opposée aux dents de découpe 9, logement dans lequel peuvent venir s'engager les extrémités des tubes coaxiaux 3, 12. La paroi intérieure de ce logement annulaire constitue ainsi un support pour le tube intérieur 12.The cutting ring 8 covers the free ends of the two coaxial tubes 3 and 12, and therefore has an annular housing on its face opposite to the cutting teeth 9, housing in which the ends of the coaxial tubes 3, 12 can engage. The interior wall of this annular housing thus constitutes a support for the interior tube 12.
Le fonctionnement du dispositif de carottage qui vient d'être décrit est le suivant.The operation of the coring device which has just been described is as follows.
Lorsqu'on veut exécuter un carottage, on commande le déplacement en translation sur la glissière 1 et sur le support 2 de l'ensemble de l'unité de travail Y, c'est-à-dire du chariot 15, du mécanisme d'entraînement 6, 7 et des tubes 3, 12 vers la droite du dessin, de manière que les dents de découpe 9 pénètrent dans la charge C du haut fourneau. En même temps le mécanismeWhen it is desired to execute a coring operation, the displacement in translation is controlled on the slide 1 and on the support 2 of the assembly of the working unit Y, that is to say of the carriage 15, of the drive 6, 7 and tubes 3, 12 to the right of the drawing, so that the cutting teeth 9 penetrate into the load C of the blast furnace. At the same time the mechanism
6, 7 d'entraînement en rotation du tube extérieur 3 est mis en route, tandis que le tube intérieur 12 -reste bloqué en rotation mais accompagne le déplacement en translation du tube extérieur 3. La couronne de découpe6, 7 for driving the outer tube 3 in rotation is started, while the inner tube 12 remains locked in rotation but accompanies the translational movement of the outer tube 3. The cutting ring
8 tourne avec ce dernier et ses dents 9 découpent une carotte qui est comprimée dans la partie arrière de la couronne 8, de telle manière que sa section soit légèrement inférieure à la section du tube intérieur8 rotates with the latter and its teeth 9 cut a carrot which is compressed in the rear part of the crown 8, so that its section is slightly less than the section of the inner tube
12. Au fur et à mesure que les tubes 3 et 12 pénètrent à l'intérieur de la charge C, l'échantillon E pénètre à l'intérieur du tube 12, qu'il finit par remplir lorsque l'ensemble de l'unité de travail Y est parvenu au terme de sa course en translation. Lorsque le prélèvement de l'échantillon E est terminé, l'unité de travail Y est déplacée en translation en sens inverse, de manière à la dégager du haut fourneau.12. As the tubes 3 and 12 penetrate inside the load C, the sample E penetrates inside the tube 12, which it ends up filling when the whole unit Y has reached the end of its translational travel. When the removal of the sample E is finished, the working unit Y is moved in translation in opposite direction, so as to release it from the blast furnace.
On procède alors au démontage de la couronne 8 en enlevant les chevilles amovibles 11. On déplace ensuite le tube intérieur 12 en translation vers la droite sur le dessin, à l'intérieur du tube extérieur 3 en poussant la tige 13. Lorsque le tube intérieur 12 est totalement dégagé du tube extérieur 3, ce tube 12 est ouvert en deux afin de permettre la récupération de l'échantillon E.We then proceed to disassemble the crown 8 by removing the removable pins 11. We then move the inner tube 12 in translation to the right in the drawing, inside the outer tube 3 by pushing the rod 13. When the inner tube 12 is completely disengaged from the outer tube 3, this tube 12 is opened in two to allow the recovery of the sample E.
L'invention permet donc d'obtenir une carotte E qui n'est pas entraîné en rotation durant son prélèvement et conserve par conséquent la structure exacte de la matière C dans laquelle elle a été prélevée. En outre, les frottements subis par l'échantillon E sont réduits au minimum au niveau de la couronne 8, de sorte que cette carotte E subit très peu de perturbations et de modifications. Du fait que la couronne 8 coiffe l'extrémité des deux tubes 3, 12, il n'est pas possible que des éléments de matières viennent pénétrer dans l'espace compris entre les deux tubes.The invention therefore makes it possible to obtain a core E which is not rotated during its removal and therefore retains the exact structure of the material C from which it was removed. In addition, the friction suffered by the sample E is reduced to a minimum at the level of the crown 8, so that this core E undergoes very little disturbance and modification. Because the crown 8 covers the end of the two tubes 3, 12, it is not possible for elements of material to enter the space between the two tubes.
La figure 2 représente une variante de l'invention, notamment utilisable en carottage sans rotation du tube extérieur 3' , encore appelé carottage par poinçonnage, avec percussion, ou encore en roto- percussion. Les moyens de percussion ou roto-percussion sont des moyens classiques tels que ceux utilisés par exemple sur des parforatrices, et n'ont pas été représentés. Il suffit de mentionner que ces moyens sont adaptés pour agir sur le tube extérieur 3' .FIG. 2 represents a variant of the invention, in particular usable in coring without rotation of the outer tube 3 ′, also called coring by punching, with percussion, or also in rotational percussion. The percussion or roto-percussion means are conventional means such as those used for example on hole punches, and have not been shown. Suffice it to say that these means are adapted to act on the outer tube 3 '.
Dans cette variante la couronne d'attaque 8' comporte une arête frontale circulaire continue 19 formant un tranchant effilé 20 facilitant la pénétration dans la matière par le seul effort de poussée exercée sur le tube extérieur. La couronne est en butée sur la face frontale 21 du tube extérieur 3' qu'elle recouvre entièrement. La couronne se prolonge à l'intérieur du tube 3' par une partie cylindrique 22, pourvue, du côté opposé au tranchant 20, d'un épaule ent interne 23 qui centre le tube intérieur 12* et lui sert de butée axiale. On notera que cette disposition convient particulièrement dans le cas où le tube intérieur est formé de deux demi-coquilles, car, maintenues par l'épaulement, les demi-coquilles ne peuvent s'écarter l'une de l'autre.In this variant, the driving crown 8 ′ comprises a continuous circular front edge 19 forming a tapered cutting edge 20 facilitating the penetration into the material by the only pushing force exerted on the outer tube. The crown is in abutment on the front face 21 of the outer tube 3 'which it completely covers. The crown is extended inside the tube 3 ′ by a cylindrical part 22, provided, on the side opposite the cutting edge 20, with an internal shoulder 23 which centers the inner tube 12 * and serves as an axial stop. It will be noted that this arrangement is particularly suitable in the case where the inner tube is formed of two half-shells, because, held by the shoulder, the half-shells cannot deviate from one another.
La couronne est maintenue sur le tube extérieur 3 par des chevilles radiales 11' amovibles. Une tresse d'étanchéité 24, insérée entre les deux tubes, contre la face arrière de la couronne, assure un complément d'étanchéité.The crown is held on the outer tube 3 by removable radial pins 11 '. A sealing braid 24, inserted between the two tubes, against the rear face of the crown, provides additional sealing.
On notera que le tube interne 12' est notablement plus fin que le tube externe 3•, ce qui permet de réduire l'épaisseur totale de l'ensemble et donc de la couronne de découpe, et de limiter ainsi l'effort de pénétration nécessaire. It will be noted that the internal tube 12 ′ is notably thinner than the external tube 3 •, which makes it possible to reduce the total thickness of the assembly and therefore of the cutting crown, and thus to limit the necessary penetration force. .

Claims

REVENDICATIONS
1) Dispositif de carottage des matières contenues dans un haut fourneau sidérurgique ou analogue, comprenant un châssis (X) sur lequel est montée une unité de travail (Y) pouvant se mouvoir en translation sur le châssis, ladite unité de travail comportant un premier tube cylindrique (3) équipé à l'une des ses extrémités d'un outil de découpe (8, 9) pour séparer, lors de l'avancée de l'unité de travail, la carotte prélevée des matières avoisinantes, caractérisé en ce qu'il comporte un deuxième tube cylindrique (12), fixe en rotation et déplaçable en translation axiale à l'intérieur du premier tube (3) et en ce que l'outil de découpe (8, 9) est constitué d'une couronne coiffant les extrémités des deux tubes, fixée de manière démontable sur le premier tube, et dont le diamètre intérieur est au moins légèrement plus petit que le diamètre intérieur du deuxième tube.1) Coring device for the materials contained in a steel blast furnace or the like, comprising a chassis (X) on which is mounted a working unit (Y) which can move in translation on the chassis, said working unit comprising a first tube cylindrical (3) equipped at one of its ends with a cutting tool (8, 9) to separate, when advancing the working unit, the core taken from the neighboring materials, characterized in that it comprises a second cylindrical tube (12), fixed in rotation and movable in axial translation inside the first tube (3) and in that the cutting tool (8, 9) consists of a crown covering the ends of the two tubes, detachably attached to the first tube, and the internal diameter of which is at least slightly smaller than the internal diameter of the second tube.
2) Dispositif selon la revendication 1, caractérisé en ce que le premier tube (3) est entraîné en rotation, et la couronne de découpe (8) comporte une face frontale pourvue de dents de découpe (9) .2) Device according to claim 1, characterized in that the first tube (3) is rotated, and the cutting ring (8) has a front face provided with cutting teeth (9).
3) Dispositif selon la revendication 1, caractérisé en ce que la couronne de découpe (8') comporte une arête circulaire frontale (19) .3) Device according to claim 1, characterized in that the cutting ring (8 ') has a circular front edge (19).
4) Dispositif selon la revendication 1, caractérisé en ce que 1'unité de travail comporte un système à percussion ou roto-percussion agissant sur le premier tube (3').4) Device according to claim 1, characterized in that the work unit comprises a percussion or roto-percussion system acting on the first tube (3 ').
5) Dispositif de carottage selon la revendication 1, caractérisé en ce que la couronne de découpe (8) constitue un organe de support et de centrage pour le tube intérieur (12) par maintien de son extrémité libre.5) Coring device according to claim 1, characterized in that the cutting ring (8) constitutes a support and centering member for the inner tube (12) by maintaining its free end.
6) Dispositif de carottage selon la revendication 1, caractérisé en ce que la couronne de découpe (8, 9) est montée sur l'extrémité libre du premier tube (3) au moyen de chevilles radiales amovibles (11) .6) Coring device according to claim 1, characterized in that the cutting ring (8, 9) is mounted on the free end of the first tube (3) by means of removable radial pins (11).
7) Dispositif de carottage selon la revendication 1, caractérisé en ce que le tube intérieur (12) est constitué de deux demi-coquilles assemblées.7) Coring device according to claim 1, characterized in that the inner tube (12) consists of two assembled half-shells.
8) Dispositif de carottage selon la revendication 2, caractérisé en ce que le fond du premier tube extérieur rotatif (3) porte un axe d'entraînement en rotation (4) monté dans un palier (5) et couplé à des moyens motorisés (6, 7) .8) Coring device according to claim 2, characterized in that the bottom of the first rotary outer tube (3) carries a rotary drive shaft (4) mounted in a bearing (5) and coupled to motorized means (6 , 7).
9) Dispositif de carottage selon la revendication 1, caractérisé en ce que l'axe (4) d'entraînement du premier tube extérieur (3) est creux et en ce que l'extrémité arrière du tube intérieur (12) est solidaire d'une tige axiale (13) d'actionne ent en translation qui traverse ledit axe creux. 9) Coring device according to claim 1, characterized in that the axis (4) for driving the first outer tube (3) is hollow and in that the rear end of the inner tube (12) is integral with an axial rod (13) actuates ent in translation which crosses said hollow axis.
PCT/FR1992/000541 1991-06-28 1992-06-16 Core extracting device in a metallurgical blast furnace or the like WO1993000579A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR91/08095 1991-06-28
FR9108095A FR2678377A1 (en) 1991-06-28 1991-06-28 CORING DEVICE IN A STEEL BLAST OR THE LIKE.

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WO1993000579A1 true WO1993000579A1 (en) 1993-01-07

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080253411A1 (en) * 2004-04-16 2008-10-16 D.K. And E.L. Mc Phail Enterprises Pty Ltd. Optically Active Matrix with Void Structures

Citations (5)

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Publication number Priority date Publication date Assignee Title
US2492158A (en) * 1946-11-08 1949-12-27 Compte George C Le Wool coring device
GB2012651A (en) * 1977-10-19 1979-08-01 Foster Garton Ltd Probing or drilling machine
US4456079A (en) * 1982-07-08 1984-06-26 Central Mine Equipment Company Apparatus and method for taking soil samples
SU1264030A1 (en) * 1984-12-17 1986-10-15 Войсковая часть 51105 Device for taking samples of soil of non-deformed texture from various levels
SE453536B (en) * 1983-02-16 1988-02-08 Bjerking Sven Erik Archeological earth sampling tool

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Publication number Priority date Publication date Assignee Title
US2492158A (en) * 1946-11-08 1949-12-27 Compte George C Le Wool coring device
GB2012651A (en) * 1977-10-19 1979-08-01 Foster Garton Ltd Probing or drilling machine
US4456079A (en) * 1982-07-08 1984-06-26 Central Mine Equipment Company Apparatus and method for taking soil samples
SE453536B (en) * 1983-02-16 1988-02-08 Bjerking Sven Erik Archeological earth sampling tool
SU1264030A1 (en) * 1984-12-17 1986-10-15 Войсковая часть 51105 Device for taking samples of soil of non-deformed texture from various levels

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Title
SOVIET INVENTIONS ILLUSTRATED Section EI, Week 8722, 10 Juin 1987 Derwent Publications Ltd., London, GB; Class S, AN 87-156278/22 & SU,A,1 264 030 (L.S. EVTEREV) 15 Octobre 1986 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080253411A1 (en) * 2004-04-16 2008-10-16 D.K. And E.L. Mc Phail Enterprises Pty Ltd. Optically Active Matrix with Void Structures

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