[go: up one dir, main page]

EP0254659A1 - Tip for a probe and method and apparatus for handling this probe in a melt furnace - Google Patents

Tip for a probe and method and apparatus for handling this probe in a melt furnace Download PDF

Info

Publication number
EP0254659A1
EP0254659A1 EP87470010A EP87470010A EP0254659A1 EP 0254659 A1 EP0254659 A1 EP 0254659A1 EP 87470010 A EP87470010 A EP 87470010A EP 87470010 A EP87470010 A EP 87470010A EP 0254659 A1 EP0254659 A1 EP 0254659A1
Authority
EP
European Patent Office
Prior art keywords
probe
plug
nose
gas
face
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
EP87470010A
Other languages
German (de)
French (fr)
Other versions
EP0254659B1 (en
Inventor
Jean-Claude Daverio
Dominique Rocchi
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.)
Institut de Recherches de la Siderurgie Francaise IRSID
Original Assignee
Institut de Recherches de la Siderurgie Francaise IRSID
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 Institut de Recherches de la Siderurgie Francaise IRSID filed Critical Institut de Recherches de la Siderurgie Francaise IRSID
Priority to AT87470010T priority Critical patent/ATE56048T1/en
Publication of EP0254659A1 publication Critical patent/EP0254659A1/en
Application granted granted Critical
Publication of EP0254659B1 publication Critical patent/EP0254659B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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

Definitions

  • the present invention relates to a plug for a probe nose implantable in a melting furnace, more particularly a reduction-reduction furnace such as a blast furnace, in particular a steel blast furnace, as well as a method and associated device for probing in this furnace. using a probe fitted with such a plug.
  • probes used to carry out measurements, analyzes or samples in blast furnaces are generally tubular, at the very least at their end having a tubular part, so that they can either receive the measurement means or take the desired samples.
  • these probes can advantageously be permanently closed at their end, and has only an orifice sufficient for the passage of gases.
  • This orifice is preferably located on the side wall near the end of the nose of the probe. This arrangement reduces the risk of inadvertent destruction of this orifice by solid or liquid materials when the probe is introduced into the oven.
  • the gas pressure, inside the metallurgical furnace into which the probe is introduced is not necessarily well known, especially since it can vary, for example during the time of introduction of the probe, the plug risks being extracted under the action of too great a difference between the gas pressure in the probe and the pressure prevailing in the oven.
  • One of the aims of the present invention is to solve the above problems in a simple, safe and economical manner.
  • Another object of the invention is to be able to regulate the pressure of protective gas as a function of the pressure conditions, which are variable and not known with precision, encountered inside the furnace.
  • Another object of the invention is to provide a device allowing, safely for the apparatus it contains, the introduction of a probe into a melting furnace, such as a blast furnace, avoiding the inappropriate extraction of the probe nose cap.
  • a plug for a probe nose which can be installed in a melting furnace such as a blast furnace, intended to temporarily close the tubular end of said probe, consisting of two contiguous parts: a body, of substantially cylindrical shape in order to be able to be forced into the probe nose and to have a front end face inside the probe, and a head intended to cover the probe nose externally by presenting a free face facing the furnace as well as an abutment shoulder on the tubular end of the probe, plug characterized in that it has an internal conduit passing right through it and bringing the free face of the head into communication with the face frontal of the body, and in that the body comprises, on its side wall, means for ensuring a seal between it and the probe.
  • Another object of the invention is a method for implanting a tubular probe in an oven such as a blast furnace, according to which the nose of the probe is closed by the pierced plug defined above, fitted in the probe nose, a gas under pressure is injected into the probe and the probe is introduced into the oven; the supply rate of injected gas is continuously monitored, until the plug is expelled (this flow being due to the exhaust of said gas through the internal pipe of the plug), and the pressure is adjusted supply of the protective gas so as to maintain this flow rate between a minimum value below which the gas from the oven may penetrate in the probe, and a maximum value beyond which the plug may be expelled prematurely.
  • the invention it is possible to introduce into a furnace a tubular probe provided at its end with a plug, and inside of which a protective gas is injected, without risking an untimely ejection of the plug.
  • the invention makes it possible to avoid expulsion of the plug and the subsequent deterioration of the apparatuses due to their over-exposure to thermal radiation or to harmful gases coming from the furnace.
  • Another advantage of the invention is to present a plug whose additional cost, compared to the solid plugs according to the prior art, is minimal since a drilling operation may be sufficient to produce the desired transverse conduit. This advantage is particularly decisive because these plugs are "consumable" elements, which must be renewed each time the probe is introduced into the oven.
  • the conduit opens at the surface of the head out of the axial end thereof, and in a direction inclined relative to the axis of the plug.
  • This arrangement is particularly advantageous: on the one hand, it greatly reduces the risk of obstruction of the orifice by solid or liquid materials with which the plug is likely to come into contact when the probe is introduced into the oven .
  • the inclined direction of the through part of the conduit no radiation can directly reach the interior of the probe and in particular the apparatus which may be there.
  • the means necessary for the implementation of the method according to the invention consist of apparatus for controlling the flow and regulating the pressure of a gas which are common measurement devices available commercially and for use. easy.
  • the probe which will be described is a cooled probe, more particularly intended for use in a steel blast furnace, and in particular for probing operations by the nozzles of the H.F.
  • Such a probe 1 generally consists of a hollow metallic tubular casing 2.
  • This casing has an interior wall 21 and an exterior wall 22, both cylindrical and coaxial. These two walls are connected to each other, at the end of the probe, to form the probe nose 3.
  • a partition 23 is arranged between the outer 22 and inner 21 walls and coaxially with them so to divide the space between the walls 21 and 22 into two concentric annular chambers 24 and 25.
  • the end of the partition 23, on the side of the nose 3, is not connected to the latter so as to provide this location communication between the two rooms. Spacers not shown keep said partition 23 in a centered position relative to the outer 22 and inner walls 21. This arrangement allows forced circulation of a cooling fluid of the probe (generally water) in the chambers 24 and 25, following the arrows in figure 1.
  • a cooling fluid of the probe generally water
  • the probe nose has a countersink 31, machined so as to have a flat abutment surface for the plug 4.
  • the latter made in one piece, has two contiguous parts: a cylindrical body 41 of diameter substantially equal to the diameter inside of the envelope 2 of the probe and a head 42, of generally conical shape so as to offer in contact with the interior of the oven a face 52 which facilitates the penetration of the probe into the oven.
  • the diameter of the head is greater than that of the body, thus forming a shoulder 46 which abuts on the counterbore 31 of the probe nose, when the plug is fitted at the end of the latter.
  • the base of the cone forms a cylindrical portion 43 of small height corresponding to the depth of the counterbore 31 produced on the probe nose.
  • the diameter of the cylindrical portion 43 of the cap head (and therefore the maximum outside diameter of said cap) is less than the outside diameter of the tubular casing 2 of the probe, and therefore of the probe nose 3. Said diameter of the head of the plug is only very slightly less than the diameter of the countersink 31 of the probe nose. This feature ensures continuity between the apparent surface 52 of the cap and that of the nose, which facilitates the penetration of the probe when it is brought through an area of solid materials, by improving the sliding of these materials on the surface. end of the probe.
  • the body 41 of the plug has on its side wall 53 one or more circular grooves 44. (In Figure 1 two of these grooves are shown). These grooves receive seals or packings 45 made of a material having sufficient resistance to the high temperatures to which the plug is exposed despite the cooling of the probe. In particular, these seals 45 can be made of asbestos.
  • the plug is itself made of refractory material, for example asbestolite®.
  • the seals 45 also participate by their elasticity in maintaining the plug in the probe nose.
  • the plug is traversed right through by a conduit 47 of small diameter, for example 1 or 2 millimeters, opening onto the conical face 52 of the head, preferably, for the reasons already mentioned, in a direction inclined relative to the axis of the plug, and substantially towards the middle of a generator of this conical part through an orifice 50.
  • the other end of the internal conduit 47 opens onto the free front face 48 of the body 41 facing the inside of the probe, through an orifice 51 advantageously located in a groove 49 hollowed out transversely in this face along a diameter.
  • the plug should be particularly well studied. Its shape should facilitate penetration of the probe. It must effectively seal the probe for the duration of the introduction thereof, until its ejection by appropriate means.
  • the force exerted on the plug results from the difference between the pressure inside the oven and that of the gas injected into the probe, in accordance with the invention, and thanks to which one can appreciate this pressure difference and adjust the supply of shielding gas accordingly.
  • the introduction of the probe is carried out as described below.
  • the probe 1 is provided with a pierced plug 4 in accordance with the invention and with the internal apparatuses required to perform the metrology or sample collection operations desired.
  • a pressurized gas preferably a neutral gas and advantageously nitrogen, is introduced into the probe in the vicinity of its end 5 opposite the nose 3, through a flow controller 6 and a pressure regulator 7 .
  • the probe is introduced by the nozzle into the blast furnace, through sealing means of known type, so that the pressurized gas of the H.F. cannot inadvertently escape to the atmosphere.
  • the plug As soon as the probe nose is in contact with the internal gas of the blast furnace, the plug is subjected, on the one hand to the pressure of this gas which tends to keep it in abutment on the probe, and on the other hand, to the nitrogen pressure which tends to eject it.
  • the plug being force fitted into the probe nose, resists a certain differential pressure tending to drive it out.
  • the invention is based on the fact that it suffices to maintain a minimum flow of nitrogen through the conduit 47 of the plug 4. This flow is controlled by the flow controller 6. If the flow increases, this means that the blast furnace pressure decreases, and as a result the nitrogen pressure will be reduced to maintain equilibrium. Conversely, if the flow rate decreases, it means that the pressure of the blast furnace increases and the nitrogen pressure will likewise be increased.
  • a range of flow rate value is determined, determined by a maximum beyond which the plug risks being expelled, and a minimum below which the gas from the blast furnace risks entering the probe.
  • This minimum is not zero in order to prevent uncontrolled nitrogen leaks, and especially because in the event of an increase in pressure in the oven, the nitrogen contained in the probe would compress and allow it to penetrate through the duct 47 for blast furnace gas.
  • the maximum flow rate corresponds to a maximum allowable pressure difference between the inside of the probe and the oven for holding the plug on the probe nose, it is possible to use the device described above to expel the plug at the end of penetration, by a voluntary increase in pressure, beyond the limits provided previously for the operation being introduced.
  • the nitrogen pressure regulator 7 can be controlled by the flow controller 6, by means of a control device 8 which will automatically adjust the pressure as a function of the flow.
  • the invention advantageously applies to all the probes carried out by means of a tubular probe in a metallurgical furnace containing gases under pressure.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Blast Furnaces (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Measuring Fluid Pressure (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Materials For Medical Uses (AREA)
  • Adornments (AREA)
  • Investigating And Analyzing Materials By Characteristic Methods (AREA)
  • Electric Ovens (AREA)
  • Measuring Leads Or Probes (AREA)

Abstract

A plug for a probe nose is produced in one piece having two contiguous parts. The first part is a substantially cylindrical body designed to be inserted in the probe nose such that it ensures tightness between the probe and the plug body. The second part is a substantially conical or semi-spherical head, co-axial to the body and provided at the level of its junction with the latter with a shoulder by which it can abut on the end of the probe. The plug comprises an inner through conduit which connects the surface of the head with the free front face of the body. This conduit authorizes the discharge of a protective gas introduced into the probe, and it is possible by controlling the flow of this gas to assess the difference of pressure exerted on each side of the plug and to adjust accordingly the pressure of the protective gas in order to prevent both the ejection of the plug and the penetration into the probe of hot gases from the furnace. The invention finds an application in the probing of furnaces used for reducing materials containing pressurized gases, such as blast furnaces.

Description

La présente invention concerne un bouchon pour nez de sonde implantable dans un four de fusion, plus particulièrement de fusion-réduction tel qu'un haut fourneau, notamment un haut fourneau sidérurgique, ainsi qu'un procédé et dispositif associé pour sondage dans ce four à l'aide d'une sonde munie d'un tel bouchon.The present invention relates to a plug for a probe nose implantable in a melting furnace, more particularly a reduction-reduction furnace such as a blast furnace, in particular a steel blast furnace, as well as a method and associated device for probing in this furnace. using a probe fitted with such a plug.

On connait déjà des sondes utilisées pour réaliser des mesures, analyses ou prélèvements dans les hauts fourneaux. Ces sondes sont généralement tubulaires, out tout au moins com­portent en leur extrémité une partie tubulaire, de façon à pou­voir, soit recevoir les moyens de mesure, soit effectuer les prélèvements désirés.We already know of probes used to carry out measurements, analyzes or samples in blast furnaces. These probes are generally tubular, at the very least at their end having a tubular part, so that they can either receive the measurement means or take the desired samples.

Dans le cas de prélèvements gazeux ou de mesures de pression par exemple, ces sondes peuvent avantageusement être obturées à demeure à leur extrémité, et ne comporte qu'un ori­fice suffisant au passage des gaz. Cet orifice est situé de préférence sur la paroi latérale proche de l'extrémité du nez de la sonde. Cette disposition réduit le risque d'une destruc­tion malencontreuse de cet orifice par les matières solide ou liquide lors de l'introduction de la sonde dans le four.In the case of gas samples or pressure measurements for example, these probes can advantageously be permanently closed at their end, and has only an orifice sufficient for the passage of gases. This orifice is preferably located on the side wall near the end of the nose of the probe. This arrangement reduces the risk of inadvertent destruction of this orifice by solid or liquid materials when the probe is introduced into the oven.

Par contre, dans le cas où l'on veut procéder avec une telle sonde à des prélèvements de matière non gazeuse, ou par exemple, à des repérages de température avec un pyromètre optique dans l'axe de la sonde, il est nécessaire que l'extrémité de celle-ci soit libre. Toutefois, si l'on introduit sensiblement axialement une sonde tubulaire, dont l'extrémité est ouverte, dans un four de fusion, donc contenant des matières à haute température, on risque d'obstruer rapidement le nez de la sonde, ou encore de détruire l'appareillage placé à l'intérieur de la sonde, par exemple, par le contact de gaz nocifs ou corrosifs ou par des températures trop élevées.On the other hand, in the case where it is desired to carry out with such a probe samples of non-gaseous material, or for example, temperature markings with an optical pyrometer in the axis of the probe, it is necessary that the end of it is free. However, if a tubular probe, the end of which is open, is introduced substantially axially into a melting furnace, therefore containing materials at high temperature, there is a risk of rapidly obstructing the nose of the probe, or of destroying the apparatus placed inside the probe, for example, by contact with harmful or corrosive gases or by excessively high temperatures.

Pour résoudre ce problème, il a déjà été prévu d'obturer temporairement le nez de sonde par un bouchon, qui peut être enlevé ou expulsé,par des moyens ou procédés adéquats, lorsque le nez de sonde est parvenu à l'endroit souhaité. Ces bouchons sont bien sûr non récupérables puisqu'ils sont abandonnés, après expulsion, à l'intérieur du four.To solve this problem, provision has already been made to temporarily close the probe nose with a plug, which can be removed or expelled, by suitable means or methods, when the probe nose has reached the desired location. These plugs are of course not recoverable since they are abandoned, after expulsion, inside the oven.

La demande de brevet français no 2472018 de Nippon Steel Corp. décrit des sondes munies de tels bouchons. Ce document décrit des bouchons qui sont insérés à l'extrémité de la sonde, et dont l'enlèvement est assuré par frottement avec la matière dans le four lors d'un mouvement de retrait de la sonde après pénétration de celle-ci au-delà de l'endroit à sonder. Cette manière de procéder ne paraît pas totalement fiable, car le bouchon,devant être facilement amovible, risque de s'extraire malencontreusement lors de l'introduction de la sonde, ce qui est à prohiber. Inversement, si l'emmanchement est suffisamment serré pour éviter une expulsion prématurée du bouchon, celle-ci risque de ne pas se produire à l'endroit voulu.The French patent application No. 2472018 of Nippon Steel Corp. describes probes provided with such plugs. This document describes plugs which are inserted at the end of the probe, and whose removal is ensured by friction with the material in the oven during a movement of withdrawal of the probe after penetration of the latter beyond of the place to be probed. This procedure does not appear to be completely reliable, since the plug, which must be easily removable, risks accidentally being extracted during the introduction of the probe, which is to be prohibited. Conversely, if the fitting is tight enough to prevent premature expulsion of the stopper, it may not occur at the desired location.

De plus, il peut être nécessaire de protéger les instru­ments de mesure introduits dans la sonde à l'égard des hautes températures atteintes et des éventuelles pollutions par des gaz qui pénètreraient dans la sonde par un manque d'étanchéité du bouchon dans le nez de sonde. Pour cela, il est prévu d'in­jecter un gaz neutre, tel l'azote, à l'intérieur de la sonde, sous une certaine pression.In addition, it may be necessary to protect the measuring instruments introduced into the probe against the high temperatures reached and possible pollution by gases which would enter the probe by a lack of tightness of the plug in the probe nose. . For this, it is planned to inject a neutral gas, such as nitrogen, inside the probe, under a certain pressure.

Cependant, comme la pression gazeuse, à l'intérieur du four métallurgique dans lequel la sonde est introduite, n'est pas forcément bien connue, d'autant qu'elle peut varier, par exemple pendant le temps d'introduction de la sonde, le bouchon risque de s'extraire sous l'action d'une différence trop impor­tante entre la pression du gaz dans la sonde et la pression régnant dans le four.However, as the gas pressure, inside the metallurgical furnace into which the probe is introduced, is not necessarily well known, especially since it can vary, for example during the time of introduction of the probe, the plug risks being extracted under the action of too great a difference between the gas pressure in the probe and the pressure prevailing in the oven.

On se trouve alors confronté au problème de l'adaptation de la pression du gaz injecté dans la sonde à la pression régnant dans le four, pour éviter, d'une part, une introduction dans la sonde de gaz provenant du four, et d'autre part,l'extraction inopportune du bouchon.We are then faced with the problem of adapting the pressure of the gas injected into the probe to the pressure prevailing in the oven, to avoid, on the one hand, an introduction into the probe of gas coming from the oven, and on the other hand, the untimely extraction of the plug.

Un des buts de la présente invention est de résoudre les problèmes précités d'une façon simple, sûre et économique.One of the aims of the present invention is to solve the above problems in a simple, safe and economical manner.

Un autre but de l'invention est de pouvoir réguler la pression de gaz protecteur en fonction des conditions de pres­sion, variables et non connues avec précision, recontrées à l'intérieur du four.Another object of the invention is to be able to regulate the pressure of protective gas as a function of the pressure conditions, which are variable and not known with precision, encountered inside the furnace.

Un autre but de l'invention est de fournir un dispositif permettant, en toute sécurité pour l'appareillage qu'elle con­tient, l'introduction d'une sonde dans un four de fusion, tel qu'un haut fourneau, en évitant l'extraction inopportune du bouchon de nez de sonde.Another object of the invention is to provide a device allowing, safely for the apparatus it contains, the introduction of a probe into a melting furnace, such as a blast furnace, avoiding the inappropriate extraction of the probe nose cap.

Afin d'atteindre ces différents buts, il est proposé un bouchon pour nez de sonde, implantable dans un four de fusion tel qu'un haut fourneau, destiné à obturer temporairement l'ex­trémité tubulaire de ladite sonde, constitué de deux parties contiguës : un corps, de forme sensiblement cylindrique pour pouvoir s'insérer à force dans le nez de sonde et présenter une face frontale d'extrémité à l'intérieur de la sonde, et une tête destinée à coiffer extérieurement le nez de sonde en présentant une face libre en regard du four ainsi qu'un épaulement de butée sur l'extrémité tubulaire de la sonde, bouchon caractérisé en ce qu'il présente un conduit interne le traversant de part en part et mettant en communication la face libre de la tête avec la face frontale du corps, et en ce que le corps comporte, sur sa paroi latérale, des moyens pour assurer une étanchéité entre lui et la sonde.In order to achieve these various goals, a plug for a probe nose is proposed, which can be installed in a melting furnace such as a blast furnace, intended to temporarily close the tubular end of said probe, consisting of two contiguous parts: a body, of substantially cylindrical shape in order to be able to be forced into the probe nose and to have a front end face inside the probe, and a head intended to cover the probe nose externally by presenting a free face facing the furnace as well as an abutment shoulder on the tubular end of the probe, plug characterized in that it has an internal conduit passing right through it and bringing the free face of the head into communication with the face frontal of the body, and in that the body comprises, on its side wall, means for ensuring a seal between it and the probe.

Un autre objet de l'invention est un procédé pour l'im­plantation d'une sonde tubulaire dans un four tel qu'un haut fourneau, selon lequel on obture le nez de la sonde par le bou­chon percé défini ci-dessus, emmanché dans le nez de sonde, on injecte un gaz sous pression dans la sonde et on introduit la sonde dans le four; on contrôle en permanence, jusqu'au moment de l'expulsion du bouchon, le débit d'alimentation en gaz in­jecté (ce débit étant dû à l'échappement dudit gaz par le conduit interne du bouchon), et on règle la pression d'alimentation du gaz protecteur de façon à maintenir ce débit entre une valeur minimum en-deçà de laquelle le gaz du four risque de pénétrer dans la sonde, et une valeur maximum au-delà de laquelle le bouchon risque d'être expulsé prématurément.Another object of the invention is a method for implanting a tubular probe in an oven such as a blast furnace, according to which the nose of the probe is closed by the pierced plug defined above, fitted in the probe nose, a gas under pressure is injected into the probe and the probe is introduced into the oven; the supply rate of injected gas is continuously monitored, until the plug is expelled (this flow being due to the exhaust of said gas through the internal pipe of the plug), and the pressure is adjusted supply of the protective gas so as to maintain this flow rate between a minimum value below which the gas from the oven may penetrate in the probe, and a maximum value beyond which the plug may be expelled prematurely.

Grâce à l'invention, on peut introduire dans un four une sonde tubulaire pourvue à son extrémité d'un bouchon, et à l'intérieur de laquelle un gaz protecteur est injecté, sans risquer une éjection inopportune du bouchon.Thanks to the invention, it is possible to introduce into a furnace a tubular probe provided at its end with a plug, and inside of which a protective gas is injected, without risking an untimely ejection of the plug.

En particulier, lors de l'utilisation de sondes contenant des appareillages de mesure, ceux-ci peuvent être efficacement protégés par l'injection d'un gaz. L'invention permet d'éviter l'expulsion du bouchon et la détérioration subséquente des appa­reillages due à leur sur-exposition à des rayonnements thermiques ou à des gaz nocifs provenant du four.In particular, when using probes containing measuring equipment, these can be effectively protected by the injection of a gas. The invention makes it possible to avoid expulsion of the plug and the subsequent deterioration of the apparatuses due to their over-exposure to thermal radiation or to harmful gases coming from the furnace.

Un autre avantage de l'invention est de présenter un bouchon dont le supplément de coût, par rapport aux bouchons pleins selon l'art antérieur, est minime puisqu'une opération de perçage peut suffire à réaliser le conduit traversier recher­ché. Cet avantage est particulièrement déterminant car ces bouchons sont des éléments "consommables", qu'il faut renouveller à chaque introduction de la sonde dans le four.Another advantage of the invention is to present a plug whose additional cost, compared to the solid plugs according to the prior art, is minimal since a drilling operation may be sufficient to produce the desired transverse conduit. This advantage is particularly decisive because these plugs are "consumable" elements, which must be renewed each time the probe is introduced into the oven.

Selon une réalisation préférée de l'invention, le conduit débouche à la surface de la tête hors de l'extrémité axiale de celle-ci, et selon une direction inclinée par rapport à l'axe du bouchon. Cette disposition est particulièrement avantageuse : d'une part, elle diminue fortement le risque d'obstruction de l'orifice par les matériaux solides ou liquides avec lesquels le bouchon est susceptible de venir en contact lors de l'intro­duction de la sonde dans le four. D'autre part, du fait de la direction inclinée de la partie débouchante du conduit, aucun rayonnement ne peut atteindre directement l'intérieur de la sonde et en particulier l'appareillage qui peut s'y trouver.According to a preferred embodiment of the invention, the conduit opens at the surface of the head out of the axial end thereof, and in a direction inclined relative to the axis of the plug. This arrangement is particularly advantageous: on the one hand, it greatly reduces the risk of obstruction of the orifice by solid or liquid materials with which the plug is likely to come into contact when the probe is introduced into the oven . On the other hand, due to the inclined direction of the through part of the conduit, no radiation can directly reach the interior of the probe and in particular the apparatus which may be there.

De plus, les moyens nécessaires pour la mise en oeuvre du procédé selon l'invention, consistent en des appareils de contrôle de débit et de régulation de pression d'un gaz qui sont des appareils de mesure courants disponibles dans le com­merce et d'utilisation aisée.In addition, the means necessary for the implementation of the method according to the invention consist of apparatus for controlling the flow and regulating the pressure of a gas which are common measurement devices available commercially and for use. easy.

D'autres particularités et avantages apparaîtront au vu de la description qui suit d'un mode de réalisation de l'inven­tion, qui va être faite en liaison avec les dessins annexés dans lesquels :

  • - la figure 1 est une vue en coupe partielle d'un bou­chon percé selon l'invention en place dans le nez de sonde ;
  • - la figure 2 est une vue de la face frontale libre du corps du bouchon ;
  • - la figure 3 est une représentation schématique du dispositif pour la mise en oeuvre du procédé de sondage dans un four.
Other particularities and advantages will become apparent on reading the following description of an embodiment of the invention, which will be made in conjunction with the appended drawings in which:
  • - Figure 1 is a partial sectional view of a pierced plug according to the invention in place in the probe nose;
  • - Figure 2 is a view of the free front face of the body of the plug;
  • - Figure 3 is a schematic representation of the device for implementing the probing method in an oven.

La sonde qui va être décrite est une sonde refroidie, plus particulièrement destinée à une utilisation dans un haut fourneau sidérurgique, et notamment pour des opérations de son­dage par les tuyères du H.F.The probe which will be described is a cooled probe, more particularly intended for use in a steel blast furnace, and in particular for probing operations by the nozzles of the H.F.

Une telle sonde 1 est généralement constituée d'une enveloppe tubulaire métallique creuse 2. Cette enveloppe comporte une paroi intérieure 21 et une paroi extérieure 22, toutes deux cylindriques et coaxiales. Ces deux parois sont reliées l'une à l'autre, à l'extrémité de la sonde, pour former le nez de sonde 3. Une cloison 23 est disposée entre les parois extérieure 22 et intérieure 21 et coaxialement à celles-ci de manière à partager l'espace entre les parois 21 et 22 en deux chambres annulaires concentriques 24 et 25. L'extrémité de la cloison 23, du côté du nez 3, n'est pas reliée à celui-ci de manière à ménager à cet endroit une communication entre les deux cham­bres. Des écarteurs non représentés maintiennent ladite cloison 23 en position centrée par rapport aux parois extérieure 22 et intérieure 21. Cette disposition autorise une circulation forcée d'un fluide de refroidissement de la sonde (généralement de l'eau) dans les chambres 24 et 25, suivant les flèches de la figure 1.Such a probe 1 generally consists of a hollow metallic tubular casing 2. This casing has an interior wall 21 and an exterior wall 22, both cylindrical and coaxial. These two walls are connected to each other, at the end of the probe, to form the probe nose 3. A partition 23 is arranged between the outer 22 and inner 21 walls and coaxially with them so to divide the space between the walls 21 and 22 into two concentric annular chambers 24 and 25. The end of the partition 23, on the side of the nose 3, is not connected to the latter so as to provide this location communication between the two rooms. Spacers not shown keep said partition 23 in a centered position relative to the outer 22 and inner walls 21. This arrangement allows forced circulation of a cooling fluid of the probe (generally water) in the chambers 24 and 25, following the arrows in figure 1.

Le nez de sonde comporte un lamage 31, usiné de façon à présenter une surface de butée plane pour le bouchon 4. Celui-­ci, réalisé d'une seule pièce, présente deux parties contiguës : un corps cylindrique 41 de diamètre sensiblement égal au diamètre intérieur de l'enveloppe 2 de la sonde et une tête 42, de forme générale conique de manière à offrir au contact de l'intérieur du four une face 52 qui facilite la pénétration de la sonde dans le four. Le diamètre de la tête est supérieur à celui du corps, formant ainsi un épaulement 46 qui vient en butée sur le lamage 31 du nez de sonde, lorsque le bouchon est emmanché à l'extrémité de celle-ci. La base du cône forme une portion cylindrique 43 de faible hauteur correspondant à la profondeur du lamage 31 réalisé sur le nez de sonde.The probe nose has a countersink 31, machined so as to have a flat abutment surface for the plug 4. The latter, made in one piece, has two contiguous parts: a cylindrical body 41 of diameter substantially equal to the diameter inside of the envelope 2 of the probe and a head 42, of generally conical shape so as to offer in contact with the interior of the oven a face 52 which facilitates the penetration of the probe into the oven. The diameter of the head is greater than that of the body, thus forming a shoulder 46 which abuts on the counterbore 31 of the probe nose, when the plug is fitted at the end of the latter. The base of the cone forms a cylindrical portion 43 of small height corresponding to the depth of the counterbore 31 produced on the probe nose.

Le diamètre de la portion cylindrique 43 de la tête du bouchon (et donc le diamètre extérieur maximal dudit bouchon) est inférieur au diamètre extérieur de l'enveloppe tubulaire 2 de la sonde, et donc du nez de sonde 3. Ledit diamètre de la tête du bouchon n'est que très légèrement inférieur au diamètre du lamage 31 du nez de sonde. Cette particularité permet d'assurer une continuité entre la surface apparente 52 du bouchon et celle du nez, ce qui facilite la pénétration de la sonde lorsqu'elle est amenée à traverser une zone de matières solides, en amélio­rant le glissement de ces matières sur l'extrémité de la sonde.The diameter of the cylindrical portion 43 of the cap head (and therefore the maximum outside diameter of said cap) is less than the outside diameter of the tubular casing 2 of the probe, and therefore of the probe nose 3. Said diameter of the head of the plug is only very slightly less than the diameter of the countersink 31 of the probe nose. This feature ensures continuity between the apparent surface 52 of the cap and that of the nose, which facilitates the penetration of the probe when it is brought through an area of solid materials, by improving the sliding of these materials on the surface. end of the probe.

Le corps 41 du bouchon comporte sur sa paroi latérale 53 une ou plusieurs gorges circulaires 44. (Sur la figure 1 deux de ces gorges sont représentées). Ces gorges reçoivent des joints ou garnitures d'étanchéité 45 en matériau ayant une résistance suffisante aux hautes températures auxquelles le bouchon est exposé malgré le refroidissement de la sonde. En particulier, ces joints 45 peuvent être en amiante. Le bouchon est lui-même en matériau réfractaire, par exemple en asbestolite®.The body 41 of the plug has on its side wall 53 one or more circular grooves 44. (In Figure 1 two of these grooves are shown). These grooves receive seals or packings 45 made of a material having sufficient resistance to the high temperatures to which the plug is exposed despite the cooling of the probe. In particular, these seals 45 can be made of asbestos. The plug is itself made of refractory material, for example asbestolite®.

Outre leur fonction d'étanchéité, les joints 45 partici­pent également par leur élasticité au maintien du bouchon dans le nez de sonde.In addition to their sealing function, the seals 45 also participate by their elasticity in maintaining the plug in the probe nose.

Le bouchon est traversé de part en part par un conduit 47 de petit diamètre, par exemple 1 ou 2 millimètres, débouchant sur la face conique 52 de la tête, de préférence, pour les rai­sons déjà mentionées, selon une direction inclinée par rapport à l'axe du bouchon, et sensiblement vers le milieu d'une géné­ratrice de cette partie conique par un orifice 50. L'autre extré­mité du conduit interne 47 débouche sur la face frontale libre 48 du corps 41 en regard de l'intérieur de la sonde, par un orifice 51 situé avantageusement dans une rainure 49 creusée transversalement dans cette face suivant un diamètre. Cette particularité évite l'obstruction de l'orifice au cas où un objet placé à l'intérieur de la sonde viendrait se plaquer sur la face frontale 48 du corps du bouchon. Dans ce cas, grâce à la rainure 49, un passage est conservé par les extrémités diamétralement opposées de ladite rainure, car les objects norma­lement introduits dans la sonde n'occupent pas toute la section interne de celle-ci.The plug is traversed right through by a conduit 47 of small diameter, for example 1 or 2 millimeters, opening onto the conical face 52 of the head, preferably, for the reasons already mentioned, in a direction inclined relative to the axis of the plug, and substantially towards the middle of a generator of this conical part through an orifice 50. The other end of the internal conduit 47 opens onto the free front face 48 of the body 41 facing the inside of the probe, through an orifice 51 advantageously located in a groove 49 hollowed out transversely in this face along a diameter. This feature avoids obstruction of the orifice in the event that an object placed inside the probe comes to be pressed against the front face 48 of the body of the plug. In this case, thanks to the groove 49, a passage is preserved by the diametrically opposite ends of said groove, because the objects normally introduced into the probe do not occupy the entire internal section of the latter.

On va maintenant, en se référant au schéma de la figure 3, décrire une opération d'implantation d'une sonde dans un four métallurgique. Pour donner un exemple plus précis, on dé­crira plus particulièrement l'introduction d'une sonde pariétale dans un haut fourneau sidérurgique par une tuyère, afin d'amener l'extrémité de la sonde dans le massif central de coke, habi­tuellement dénommé l'"homme mort". Cette opération délicate, car réalisée dans une partie très chaude du haut fourneau, implique, lors de la pénétration le passage du nez de sonde dans des zones de caractéristiques très différentes. Dans ce cas particulier, la sonde traverse d'abord une zone gazeuse au niveau de la tuyère et de la cavité tourbillonnaire du haut fourneau, puis une zone pratiquement solide au niveau de l'"homme mort". Le nez de la sonde doit être capable de résister aux diverses contraintes résultant de cette variété des matières recontrées.We will now, referring to the diagram in Figure 3, describe an operation of implanting a probe in a metallurgical furnace. To give a more precise example, we will describe more particularly the introduction of a parietal probe into a steel blast furnace by a nozzle, in order to bring the end of the probe into the central mass of coke, usually called the " dead man". This delicate operation, since it is carried out in a very hot part of the blast furnace, involves, during penetration, the passage of the probe nose into zones of very different characteristics. In this particular case, the probe first crosses a gaseous zone at the level of the nozzle and the vortex cavity of the blast furnace, then a practically solid zone at the level of the "dead man". The nose of the probe must be able to withstand the various stresses resulting from this variety of materials encountered.

De ce fait, le bouchon doit être particulièrement bien étudié. Sa forme doit faciliter la pénétration de la sonde. Il doit obturer efficacement la sonde pendant la durée de l'in­troduction de celle-ci, jusqu'à son éjection par des moyens appropriés.Therefore, the plug should be particularly well studied. Its shape should facilitate penetration of the probe. It must effectively seal the probe for the duration of the introduction thereof, until its ejection by appropriate means.

Lorsque le nez de sonde traverse une zone gazeuse du four, l'effort s'exerçant sur le bouchon résulte de la diffé­rence entre la pression à l'intérieur du four et celle du gaz injecté dans la sonde, conformément à l'invention, et grâce à laquelle on peut apprécier cette différence de pression et ajuster en conséquence l'alimentation en gaz de protection.When the probe nose passes through a gaseous zone of the oven, the force exerted on the plug results from the difference between the pressure inside the oven and that of the gas injected into the probe, in accordance with the invention, and thanks to which one can appreciate this pressure difference and adjust the supply of shielding gas accordingly.

Typiquement, l'introduction de la sonde se réalise comme décrit ci-dessous. La sonde 1 est munie d'un bouchon 4 percé conforme à l'invention et des appareillages internes voulus pour effectuer les opérations de métrologie ou de prélèvement d'échantillons souhaités. Un gaz sous pression, de préférence un gaz neutre et avantageusement de l'azote, est introduit dans la sonde au voisinage de son extrémité 5 opposé au nez 3, au travers d'un contrôleur de débit 6 et d'un régulateur de pres­sion 7.Typically, the introduction of the probe is carried out as described below. The probe 1 is provided with a pierced plug 4 in accordance with the invention and with the internal apparatuses required to perform the metrology or sample collection operations desired. A pressurized gas, preferably a neutral gas and advantageously nitrogen, is introduced into the probe in the vicinity of its end 5 opposite the nose 3, through a flow controller 6 and a pressure regulator 7 .

Puis la sonde est introduite par la tuyère dans le haut fourneau, à travers des moyens d'étanchéité de type connu, de façon que le gaz sous pression du H.F. ne puisse intempestivement s'échapper à l'atmosphère.Then the probe is introduced by the nozzle into the blast furnace, through sealing means of known type, so that the pressurized gas of the H.F. cannot inadvertently escape to the atmosphere.

On veille à loger le bouchon 4 de manière que son orifice 50 soit dirigé vers le bas avant l'introduction de la sonde et à conserver cette orientation pendant toute la durée de la pénétration, afin d'éviter une obstruction, au cas où des matiè­res solides ou liquides tomberaient malencontreusement sur le nez de la sonde.Care is taken to house the plug 4 so that its orifice 50 is directed downwards before the introduction of the probe and to keep this orientation throughout the duration of penetration, in order to avoid an obstruction, in the event that materials solid or liquid would accidentally fall on the nose of the probe.

Dès que le nez de sonde est au contact du gaz interne du haut fourneau, le bouchon est soumis, d'une part à la pression de ce gaz qui tend à le maintenir en butée sur la sonde, et d'autre part, à la pression d'azote qui tend à l'éjecter. Le bouchon étant emmanché à force dans le nez de sonde, résiste à une certaine pression différentielle tendant à le chasser. Par ailleurs, comme il faut empêcher une introduction de gaz de haut fourneau dans la sonde, il est donc nécessaire de main­tenir la pression d'azote supérieure à celle du gaz du haut fourneau. L'invention repose sur le fait qu'il suffit pour cela de maintenir un débit minimal d'azote au travers du conduit 47 du bouchon 4. Ce débit est contrôlé par le contrôleur de débit 6. Si le débit augmente, cela signifie que la pression du haut fourneau diminue, et en conséquence on réduira la pres­sion d'azote pour maintenir l'équilibre. Inversement, si le débit diminue, c'est que la pression du haut fourneau augmente et on augmentera de même la pression d'azote.As soon as the probe nose is in contact with the internal gas of the blast furnace, the plug is subjected, on the one hand to the pressure of this gas which tends to keep it in abutment on the probe, and on the other hand, to the nitrogen pressure which tends to eject it. The plug being force fitted into the probe nose, resists a certain differential pressure tending to drive it out. Furthermore, since it is necessary to prevent an introduction of blast furnace gas into the probe, it is therefore necessary to maintain the nitrogen pressure higher than that of the blast furnace gas. The invention is based on the fact that it suffices to maintain a minimum flow of nitrogen through the conduit 47 of the plug 4. This flow is controlled by the flow controller 6. If the flow increases, this means that the blast furnace pressure decreases, and as a result the nitrogen pressure will be reduced to maintain equilibrium. Conversely, if the flow rate decreases, it means that the pressure of the blast furnace increases and the nitrogen pressure will likewise be increased.

Pratiquement, on se fixe une fourchette de valeur du débit déterminée par un maximum au-delà de laquelle le bouchon risque d'être expulsé, et un minimum en-deçà duquel le gaz du haut fourneau risque de pénétrer dans la sonde.In practice, a range of flow rate value is determined, determined by a maximum beyond which the plug risks being expelled, and a minimum below which the gas from the blast furnace risks entering the probe.

Ce minimum n'est pas nul afin de prévenir des fuites d'azote non contrôlées, et surtout du fait qu'en cas d'une augmen­tation de pression dans le four, l'azote contenu dans la sonde se comprimerait et laisserait pénétrer par le conduit 47 du gaz de haut fourneau.This minimum is not zero in order to prevent uncontrolled nitrogen leaks, and especially because in the event of an increase in pressure in the oven, the nitrogen contained in the probe would compress and allow it to penetrate through the duct 47 for blast furnace gas.

Etant donné que le maximum de débit correspond à une différence de pression maximum admissible entre l'intérieur de la sonde et le four pour le maintien du bouchon sur le nez de sonde, il est envisageable d'utiliser le dispositif décrit ci-avant pour expulser le bouchon en fin de pénétration, par une augmentation volontaire de la pression, au-delà des limites prévues précédemment pour le fonctionnement en cours d'introduc­tion.Since the maximum flow rate corresponds to a maximum allowable pressure difference between the inside of the probe and the oven for holding the plug on the probe nose, it is possible to use the device described above to expel the plug at the end of penetration, by a voluntary increase in pressure, beyond the limits provided previously for the operation being introduced.

On peut avantageusement asservir le régulateur de pres­sion d'azote 7 au contrôleur de débit 6, au moyen d'un disposi­tif d'asservissement 8 qui assurera automatiquement le réglage de la pression en fonction du débit.Advantageously, the nitrogen pressure regulator 7 can be controlled by the flow controller 6, by means of a control device 8 which will automatically adjust the pressure as a function of the flow.

L'invention s'applique avantageusement à tous les sonda­ges réalisés au moyen d'une sonde tubulaire dans un four métal­lurgique contenant des gaz sous pression.The invention advantageously applies to all the probes carried out by means of a tubular probe in a metallurgical furnace containing gases under pressure.

La description qui vient d'être faite l'a été à titre d'exemple et n'est nullement limitative de l'invention. Des modifications peuvent y être apportées sans pour autant sortir du champ de l'invention définie par les revendications annexées.The description which has just been given has been given by way of example and is in no way limitative of the invention. Modifications can be made thereto without departing from the scope of the invention defined by the appended claims.

Claims (10)

1) Bouchon pour nez de sonde tubulaire, implantable dans un four de fusion-réduction tel qu'un haut fourneau, des­tiné à obturer temporairement l'extrémité de ladite sonde et constitué de deux parties contiguës: un corps de forme sensible­ment cylindrique pour pouvoir être inséré à l'intérieur du nez de la sonde et présenter une face frontale au contact avec l'es­pace intérieur de la sonde, et une tête destinée à coiffer exté­rieurement le nez de sonde en présentant une face de contact avec l'intérieur du four ainsi qu'un épaulement de butée sur l'extrémité tubulaire de la sonde, bouchon caractérisé en ce qu'il comporte un conduit interne (47) traversant le bouchon (4) de part en part et mettant en communication ladite face (52) de la tête (42) avec ladite face frontale (48) du corps (41), et en ce que le corps (41)présente sur sa paroi latérale (53) des moyens (44,45) piour assurer une étanchéité entre lui et la sonde.1) Cap for tubular probe nose, implantable in a melting-reduction furnace such as a blast furnace, intended to temporarily close the end of said probe and consisting of two contiguous parts: a body of substantially cylindrical shape so that it can be inserted inside the probe nose and present a front face in contact with the interior space of the probe, and a head intended to cover the probe nose externally by presenting a contact face with the interior of the oven as well that an abutment shoulder on the tubular end of the probe, plug characterized in that it comprises an internal conduit (47) passing through the plug (4) right through and placing said face (52) of the head (42) with said front face (48) of the body (41), and in that the body (41) has on its side wall (53) means (44,45) to ensure a seal between it and the probe . 2) Bouchon selon la revendication 1, caractérisé en ce que le conduit interne (47) débouche sur la face (52) de la tête (42), hors de l'extrémité axiale de celle-ci, et selon une direction inclinée par rapport à l'axe longitudinal du bouchon.2) Plug according to claim 1, characterized in that the internal conduit (47) opens onto the face (52) of the head (42), outside the axial end thereof, and in a direction inclined relative to to the longitudinal axis of the plug. 3) Bouchon selon la revendication 1, caractérisé en ce que le conduit interne (47) débouche, au niveau de la face frontale libre (48) du corps, dans une rainure (49) creusée transversalement dans cette face.3) Cap according to claim 1, characterized in that the internal conduit (47) opens, at the free front face (48) of the body, in a groove (49) hollowed transversely in this face. 4) Bouchon selon la revendication 1, caractérisé en ce que les moyens pour assurer une étanchéité entre le corps (41) et la sonde sont constitués par au moins une gorge circu­laire (44) destinée à recevoir une garniture d'étanchéité (45).4) A plug according to claim 1, characterized in that the means for ensuring a seal between the body (41) and the probe are constituted by at least one circular groove (44) intended to receive a seal (45). 5) Bouchon selon la revendication 1, caractérisé en ce que le diamètre maximal de la tête (42) est inférieur au diamètre extérieur du nez (3) de sonde sur lequel il doit être placé.5) A plug according to claim 1, characterized in that the maximum diameter of the head (42) is less than the outside diameter of the nose (3) of the probe on which it is to be placed. 6) Bouchon selon la revendication 1, caractérisé en ce que la surface (52) de la tête (42) est de forme conique et que le conduit interne (47) débouche sensiblement vers le milieu d'une génératrice de ce cône.6) A plug according to claim 1, characterized in that the surface (52) of the head (42) is conical and that the internal conduit (47) opens out substantially towards the middle of a generator of this cone. 7) Bouchon selon l'une des revendications 1 à 6, caracté­risé en ce qu'il est réalisé en matériau réfractaire.7) Cap according to one of claims 1 to 6, characterized in that it is made of refractory material. 8) Procédé pour l'implantation d'une sonde tubulaire dans un four de fusion-réduction, notamment un haut fourneau, selon lequel on obture temporairement le nez de ladite sonde par un bouchon muni d'un conduit interne selon l'une des reven­dications 1 à 7, inséré dans le nez de sonde, caractérisé en ce qu'on injecte un gaz dans la sonde, et on introduit la sonde dans le four et en ce qu'on contrôle en permanence, jusqu'à ce que le nez de sonde ait atteint la position désirée, le débit de gaz injecté, et en ce qu'on règle la pression d'alimentation dudit gaz de façon à maintenir son débit entre une valeur minimum en-deçà de laquelle les gaz du four risquent de pénétrer dans la sonde, et une valeur maximum au-delà de laquelle le bouchon risque d'être expulsé prématurément.8) Method for implanting a tubular probe in a melting-reduction furnace, in particular a blast furnace, according to which the nose of said probe is temporarily closed by a plug provided with an internal conduit according to one of claims 1 to 7, inserted in the probe nose, characterized in that a gas is injected into the probe, and the probe is introduced into the oven and in that it is continuously checked, until the nose of probe has reached the desired position, the flow rate of gas injected, and in that the supply pressure of said gas is adjusted so as to maintain its flow rate between a minimum value below which the gases from the oven risk entering the probe, and a maximum value beyond which the plug risks being expelled prematurely. 9) Procédé selon la revendication 8, caractérisé en ce que on dispose le bouchon sur la sonde de façon que l'orifice (50) du conduit interne (47) sur la face (52) du bouchon soit dirigé vers le bas pendant toute la durée d'introduction de la sonde.9) Method according to claim 8, characterized in that the plug is placed on the probe so that the orifice (50) of the internal conduit (47) on the face (52) of the plug is directed downward throughout the duration of insertion of the probe. 10) Dispositif pour la mise en oeuvre du procédé selon la revendication 8, comprenant un bouchon muni d'un conduit interne selon l'une des revendications 1 à 7, emmanché dans le nez de sonde, et des moyens pour assurer la pénétration de la sonde dans le four, caractérisé en ce qu'il comporte en outre des moyens pour injecter un gaz dans la sonde, des moyens de contrôle (6) du débit de ce gaz, des moyens de réglage de la pression (7) dudit gaz, et des moyens d'asservissement (8) de la pression au débit.10) Device for implementing the method according to claim 8, comprising a plug provided with an internal conduit according to one of claims 1 to 7, fitted in the probe nose, and means for ensuring the penetration of the probe in the oven, characterized in that it further comprises means for injecting a gas into the probe, means for controlling (6) the flow of this gas, means for adjusting the pressure (7) of said gas, and means for controlling the pressure at the flow rate (8).
EP87470010A 1986-06-30 1987-06-09 Tip for a probe and method and apparatus for handling this probe in a melt furnace Expired - Lifetime EP0254659B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87470010T ATE56048T1 (en) 1986-06-30 1987-06-09 CAP FOR PROBE, METHOD AND DEVICE FOR SAMPLING FROM MELTING FURNACES WITH SUCH PROBE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8609809 1986-06-30
FR8609809A FR2600771B1 (en) 1986-06-30 1986-06-30 PLUG FOR PROBE NOSE, METHOD OF PROBING IN A MELTING OVEN USING A PROBE PROVIDED WITH SUCH A PLUG AND DEVICE FOR IMPLEMENTING SAME

Publications (2)

Publication Number Publication Date
EP0254659A1 true EP0254659A1 (en) 1988-01-27
EP0254659B1 EP0254659B1 (en) 1990-08-29

Family

ID=9337122

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87470010A Expired - Lifetime EP0254659B1 (en) 1986-06-30 1987-06-09 Tip for a probe and method and apparatus for handling this probe in a melt furnace

Country Status (11)

Country Link
US (2) US4829836A (en)
EP (1) EP0254659B1 (en)
JP (1) JPS6326304A (en)
KR (1) KR880000600A (en)
AT (1) ATE56048T1 (en)
AU (1) AU599389B2 (en)
BR (1) BR8703287A (en)
CA (1) CA1286522C (en)
DE (1) DE3764570D1 (en)
ES (1) ES2017525B3 (en)
FR (1) FR2600771B1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2600771B1 (en) * 1986-06-30 1988-09-09 Siderurgie Fse Inst Rech PLUG FOR PROBE NOSE, METHOD OF PROBING IN A MELTING OVEN USING A PROBE PROVIDED WITH SUCH A PLUG AND DEVICE FOR IMPLEMENTING SAME
JP2816159B2 (en) * 1988-10-04 1998-10-27 株式会社日立製作所 Information processing device
US5076103A (en) * 1990-08-31 1991-12-31 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Water cooled static pressure probe
JP2009156705A (en) * 2007-12-26 2009-07-16 Toyota Motor Corp Cover structure of in-vehicle radar system
JP6275162B2 (en) 2012-12-21 2018-02-07 コーニンクレッカ フィリップス エヌ ヴェＫｏｎｉｎｋｌｉｊｋｅ Ｐｈｉｌｉｐｓ Ｎ．Ｖ． Plaque detection using a stream probe
CN115200774B (en) * 2022-07-22 2023-12-01 北京超测智能系统有限公司 Method and system for measuring or adjusting gas pressure in submerged arc furnace

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1533829B1 (en) * 1967-02-06 1971-08-05 Dango & Dienenthal Kg PROBE FOR TAKING GAS AND MOELLER SAMPLES AND OR TEMPERATURE AND GAS PRESSURE MEASUREMENT IN SHAFT FURNACES IN PARTICULAR HOCH OVEN
FR2472018A1 (en) * 1979-12-21 1981-06-26 Nippon Steel Corp Sampling probe for blast furnace - where very long lance can be used to remove sample of solid charge inside large furnace

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU681097A1 (en) * 1977-12-27 1979-08-25 Всесоюзный Научно-Исследовательский Институт Автоматизации Черной Металлургии Device for gas sampling
JPS5690908A (en) * 1979-12-21 1981-07-23 Nippon Steel Corp Sonde device for blast furnace
SU933716A2 (en) * 1980-06-09 1982-06-07 Всесоюзный Научно-Исследовательский Институт Автоматизации Черной Металлургии Device for gas sampling from blast furnace
DE3243098A1 (en) * 1982-11-22 1984-05-24 Rheinische Braunkohlenwerke AG, 5000 Köln PROBE TUBLED INTO A REACTION CONTAINER FOR DETERMINING THE OPERATING CONDITION OF A MEDIUM
US4495810A (en) * 1983-04-20 1985-01-29 General Electric Company Probe mounting system
ATE34615T1 (en) * 1984-12-12 1988-06-15 Kempe Eberhard PROBE DEVICE FOR SAMPLING VOLATILE COMPONENTS FROM LIQUIDS OR GASES.
FR2600771B1 (en) * 1986-06-30 1988-09-09 Siderurgie Fse Inst Rech PLUG FOR PROBE NOSE, METHOD OF PROBING IN A MELTING OVEN USING A PROBE PROVIDED WITH SUCH A PLUG AND DEVICE FOR IMPLEMENTING SAME
US4788871A (en) * 1986-08-14 1988-12-06 Steeltin Can Corporation Probe for sensing temperature and/or pressure
US4742717A (en) * 1986-09-16 1988-05-10 Kaijo Denki Co., Ltd. Gas flow rate measuring device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1533829B1 (en) * 1967-02-06 1971-08-05 Dango & Dienenthal Kg PROBE FOR TAKING GAS AND MOELLER SAMPLES AND OR TEMPERATURE AND GAS PRESSURE MEASUREMENT IN SHAFT FURNACES IN PARTICULAR HOCH OVEN
FR2472018A1 (en) * 1979-12-21 1981-06-26 Nippon Steel Corp Sampling probe for blast furnace - where very long lance can be used to remove sample of solid charge inside large furnace

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
SOVIET INVENTIONS ILLUSTRATED, semaine 8433, 26 septembre 1984, Derwent Publications, Ltd; & SU-A-1 062 267 (KULAKOV P.A.) 23-12-1983 *
SOVIET INVENTIONS ILLUSTRATED, semaine C16, 28 mai 1980, Derwent Publications Ltd; & SU-A-681 097 (FERR METALLURGY AUTOMN) 25-08-1979 *
SOVIET INVENTIONS ILLUSTRATED, semaine K15, 25 mai 1983, Derwent Publications Ltd; & SU-A-933 716 (FERR METALLURGY AUTOMN) 09-06-1982 *

Also Published As

Publication number Publication date
BR8703287A (en) 1988-03-15
AU7478487A (en) 1988-01-07
FR2600771A1 (en) 1987-12-31
JPS6326304A (en) 1988-02-03
ATE56048T1 (en) 1990-09-15
FR2600771B1 (en) 1988-09-09
CA1286522C (en) 1991-07-23
DE3764570D1 (en) 1990-10-04
US4890503A (en) 1990-01-02
ES2017525B3 (en) 1991-02-16
KR880000600A (en) 1988-03-28
US4829836A (en) 1989-05-16
AU599389B2 (en) 1990-07-19
EP0254659B1 (en) 1990-08-29

Similar Documents

Publication Publication Date Title
EP0254659B1 (en) Tip for a probe and method and apparatus for handling this probe in a melt furnace
WO2008056062A2 (en) Device and method for automatic under-water welding for making a welding joint on a surface
FR2772118A1 (en) COMBUSTION PROCESS AND FUEL SPRAY BURNER IMPLEMENTING SUCH A METHOD
EP0298872A1 (en) Process and apparatus for dividing a primary volume of fluid into a certain number of secundary volumes having a predetermined ratio
EP0103515A1 (en) Nozzle for hot guniting
FR2718241A1 (en) Drilling mud evaluation appts
EP0795519A1 (en) Device for injecting non-oxidising gas inside a furnace
FR2802916A1 (en) PREFORM INPUT ARRANGEMENT FOR FIBER OPTIC DRAWING OVEN, OVEN HAVING SUCH ARRANGEMENT AND PREFORM EQUIPPED TO COOPERATE WITH THIS ARRANGEMENT
FR2736194A1 (en) DEVICE FOR MEASURING AT LEAST ONE PHYSICAL PARAMETER WITHIN THE HEART OF A NUCLEAR REACTOR
FR2504663A1 (en) METHOD AND APPARATUS FOR LOADING AN OVEN
EP0613955A1 (en) Loading device comprising a flow-control member
FR2584487A1 (en) METHOD AND DEVICE FOR MONITORING COMBUSTION IN AN OVEN.
EP0495764B1 (en) Preheating device for a molten metal casting nozzle
EP0645601A1 (en) Measuring procedure and device for the evolution of the ablation length of a tube
EP0406208B1 (en) Preheating device for a molten metal casting nozzle and metal casting installation comprising such device
EP0024985B1 (en) Fission product calibration device for calibrating a system that detects cladding tube ruptures in nuclear reactors
EP0211853B1 (en) Device for sheathing fuel pellets
CA1310075C (en) Device and process for the positioning and retrieval of a plasma torch in hostile pressure and temperature conditions
FR2656694A1 (en) Device for sampling a liquid
FR2605733A1 (en) Method and device for measuring the temperature of a gas by optical means
FR2867546A1 (en) Screw-threaded connector for tube and pipe, has sleeve with notch, extending radially, in zone of its end rotated towards connection part, and recess extending from notch until end of external threading rotated opposite to connection part
FR3120978A1 (en) MAINTENANCE PLUG, MAINTENANCE METHOD USING SUCH PLUG AND CANNULA FOR IMPLEMENTING THIS METHOD
FR3118168A1 (en) Leak test device for a remote manipulator handle and leak test method implementing such a device in a shielded cell
FR2685008A1 (en) Device for removing solid residues formed in an enclosure subjected to high temperature
FR3120979A3 (en) MAINTENANCE PLUG, MAINTENANCE METHOD USING SUCH PLUG AND CANNULA FOR IMPLEMENTING THIS METHOD

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE DE ES GB IT LU NL SE

17P Request for examination filed

Effective date: 19880620

17Q First examination report despatched

Effective date: 19891110

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE DE ES GB IT LU NL SE

REF Corresponds to:

Ref document number: 56048

Country of ref document: AT

Date of ref document: 19900915

Kind code of ref document: T

ITF It: translation for a ep patent filed
REF Corresponds to:

Ref document number: 3764570

Country of ref document: DE

Date of ref document: 19901004

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19910424

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 19910514

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19910521

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19910605

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 19910607

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19910612

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19910614

Year of fee payment: 5

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19910630

Year of fee payment: 5

26N No opposition filed
EPTA Lu: last paid annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19920609

Ref country code: GB

Effective date: 19920609

Ref country code: AT

Effective date: 19920609

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19920610

Ref country code: ES

Free format text: LAPSE BECAUSE OF THE APPLICANT RENOUNCES

Effective date: 19920610

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Effective date: 19920630

BERE Be: lapsed

Owner name: INSTITUT DE RECHERCHES DE LA SIDERURGIE FRANCAISE

Effective date: 19920630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19930101

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19920609

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19930302

EUG Se: european patent has lapsed

Ref document number: 87470010.7

Effective date: 19930109

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 19991102

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050609