BE739657A - Visual examination of blast furnace - Google Patents

Visual examination of blast furnace

Info

Publication number
BE739657A
BE739657A BE739657DA BE739657A BE 739657 A BE739657 A BE 739657A BE 739657D A BE739657D A BE 739657DA BE 739657 A BE739657 A BE 739657A
Authority
BE
Belgium
Prior art keywords
blast furnace
gas
probe
furnace
visual examination
Prior art date
Application number
Other languages
French (fr)
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 filed Critical
Publication of BE739657A publication Critical patent/BE739657A/en

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21BMANUFACTURE OF IRON OR STEEL
    • C21B7/00Blast furnaces
    • C21B7/24Test rods or other checking devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Blast Furnaces (AREA)

Abstract

During visual examination of charge, walls and internal accessories, gas is blown discontinuously in direction of part of charge or furnace being observed. Preferably, gas used is inert to materials which it contacts. Specifically, control device includes gas blower pipeset inside probe's hollow outer walls. End of pipe is inside probe's control conduit, beyond transparent protective device which separates probehs optical system from atmosphere in furnace. Applications are controlling running of blast furnace. Advantages include improving clearness of image obtained.

Description

  

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  Procédé et dispositif de contrôle de la marche d'un haut-fourneau. 



     Le   brevet principal décrit un procédé de contrôle de la marche d'un haut-fourneau et'un dispositif pour la mise en oeuvre de ce procédé, lequel consiste essentiellement à effectuer un examen visuel de la charge et/ou des parois et accessoires internes dudit haut fourneau en introduisant dans la charge du haut fourneau une sonde mobile comportant un appa- reillage émetteur et un appareillage récepteur de rayons optiques, en dirigeant lesdits rayons optiques vers la partie de la charge ou du four que l'on veut examiner, en réceptionnant les ayons   retransmis   par ladite partie, ce qui permet d'en obtenir une   @   image représentative, et en déduisant de ladite image les caractéristiques recherchées. 



   Selon ledit brevet principal, la sonde est munie d'un racleur destiné à maintenir propre la face la plus extérieure de la lame transparente séparant la partie 

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 optique de la sonde de l'atmosphère interne du haut fourneau: ce racleur est actionné par un ou plusieurs jets de gaz inerte qui, après avoir traversé le racleur, sont introduits dans la charge du haut fourneau,   11--en   résulte   qu ' un   important volume de gaz est ainsi insufflé dans la charge du haut fourneau, où il provoque des perturbations 'dans les conditions de   température #=   et de pression à l'endroit-même des observations. 



   Dans une précédente addition audit brevet principal, on a décrit une sonde munie de deux lames transparentes parallèles entre lesquelles circule un agent de refroidissement, et dont la face la plus extérieure est maintenue propre au moyen d'un racleur mû par un moteur mécanique ou électrique. 



   Ce dernier dispositif permet d'assurer le refroidissement et le nettoyage continu desdites lames trans- - parentes, tout en supprimant l'insufflation permanente dudit gaz inerte qui perturbait considérablement les conditions locales à l'endroit même des observations. 



   Le demandeur a toutefois constaté que la suppression de l'insufflation dudit gaz inerte entraîne certains inconvénients, tels que par exemple un manque de netteté de l'image obtenue. 



   En vue de remédier à ces inconvénients, la présente addition a pour objet un procédé de contrôle de la marche d'un haut fourneau dans lequel on effectue un examen visuel de la charge   et/ou   des parois et accessoires internes dudit haut fourneau, conformément au brevet principal, ledit procédé étant essentiellement caractérisé en ce que, au cours des observations, on pratique une insufflation discontinue d'un gaz en direction de la partie de la charge ou du four que l'on observe. 



   Un mode avantageux de mise en oeuvre du pro- cédé objet de la présente addition consiste à   insuffler.'un   gaz inerte vis-à-vis des matières au contact desquelles il est insufflé. 



   Au cours de ses essais, le demandeur a cons- taté qu'un insufflation intermittente de gaz inerte, au cours   des   observations, permettait en particulier d'améliorer la netteté de 

 <Desc/Clms Page number 3> 

 l'image obtenue et de préciser les objets observés. Ce phénomène semble dû au refroidissement temporaire et local de la charge. 



   Il est important de noter que l'insufflation intermittente de faibles volumes de gaz ne perturbe pas les observations comme le faisait l'insufflation continue du gaz entraînant le racleur pneumatique décrit dans le brevet principal. 



   La présente addition a également pour objet un dispositif pour la mise en oeuvre de ce procédé. 



   Le dispositif de contrôle de la marche d'un haut fourneau, objet de la présente addition, constitué d'une sonde équipée d'appareils émetteur et récepteur de rayons optiques et d'un organe de protection conformément au brevet principal et aux précédentes additions, est en outre caractérisé en ce que la sonde comporte au moins une conduite d'insufflation de gaz logée à l'intérieur des parois extérieures creuses de la sonde, l'extrémité de ladite ou desdites   conduite(s)   d'insuffla- tion étant disposée à l'intérieur du conduit central de la sonde, au-delà de l'organe de protection transparent. 



   A titre d'exemple nullement limitatif, la figure annexée montre un mode de réalisation d'un dispositif conforme à la présente addition,- dans   lequel   lesdites   condui- .   tes (22) débouchent au niveau des ailettes de protection (15).. au-delà de l'organe de protection (6)- 
Sur cette figure, les mêmes repères ren- voient aux mêmes éléments que dans les figures annexées au brevet principal et aux précédentes additions.



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  Method and device for controlling the operation of a blast furnace.



     The main patent describes a process for controlling the operation of a blast furnace and a device for implementing this process, which essentially consists in carrying out a visual examination of the load and / or of the internal walls and accessories of said process. blast furnace by introducing into the blast furnace charge a mobile probe comprising a transmitter apparatus and a receiver apparatus for optical rays, by directing said optical rays towards the part of the charge or of the furnace to be examined, by receiving have retransmitted them by said part, which makes it possible to obtain a representative image thereof, and by deducing from said image the desired characteristics.



   According to said main patent, the probe is provided with a scraper intended to keep clean the outermost face of the transparent blade separating the part.

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 optical sensor of the internal atmosphere of the blast furnace: this scraper is actuated by one or more jets of inert gas which, after having passed through the scraper, are introduced into the charge of the blast furnace, 11 - the result is that a a large volume of gas is thus blown into the charge of the blast furnace, where it causes disturbances in the conditions of temperature # = and of pressure at the very place of the observations.



   In a previous addition to said main patent, we described a probe provided with two parallel transparent blades between which circulates a cooling agent, and whose outermost face is kept clean by means of a scraper driven by a mechanical or electric motor. .



   This latter device makes it possible to ensure the cooling and continuous cleaning of said transparent plates, while eliminating the permanent insufflation of said inert gas which considerably disturbed the local conditions at the very point of the observations.



   The applicant has however observed that the elimination of the insufflation of said inert gas entails certain drawbacks, such as for example a lack of sharpness of the image obtained.



   With a view to remedying these drawbacks, the present addition relates to a method of controlling the operation of a blast furnace in which a visual examination of the load and / or of the internal walls and accessories of said blast furnace is carried out, in accordance with main patent, said method being essentially characterized in that, during the observations, a discontinuous insufflation of a gas is carried out in the direction of the part of the load or of the furnace which is observed.



   An advantageous mode of carrying out the process which is the subject of the present addition consists in blowing in a gas which is inert with respect to the materials in contact with which it is blown.



   During his tests, the applicant noted that an intermittent blowing of inert gas, during the observations, made it possible in particular to improve the sharpness of the image.

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 the image obtained and to specify the objects observed. This phenomenon seems to be due to the temporary and local cooling of the load.



   It is important to note that intermittent insufflation of small volumes of gas does not disturb observations as did the continuous insufflation of gas driving the pneumatic scraper described in the main patent.



   The present addition also relates to a device for implementing this method.



   The device for controlling the operation of a blast furnace, which is the subject of this addition, consisting of a probe fitted with apparatus for emitting and receiving optical rays and a protection member in accordance with the main patent and the previous additions, is further characterized in that the probe comprises at least one gas insufflation line housed inside the hollow outer walls of the probe, the end of said insufflation line (s) being arranged inside the central duct of the probe, beyond the transparent protection member.



   By way of non-limiting example, the appended figure shows an embodiment of a device according to the present addition, - in which said condui-. your (22) emerge at the level of the protection fins (15) .. beyond the protection member (6) -
In this figure, the same references refer to the same elements as in the figures appended to the main patent and to the preceding additions.

 

Claims (1)

REVENDICATIONS. CLAIMS. 1. Procédé de contrôle de la marche d'un haut fourneau, dans lequel on effectue un examen visuel de la charge et/ou des parois et accessoires internes dudit haut fourneau conformément au brevet principal, caractérisé en ce que. au cours dudit examen visuel, on pratique une insufflation discontinue d'un gaz en direction de la partie de la charge ou du four que l'on observe. 1. A method of controlling the operation of a blast furnace, in which a visual examination of the load and / or the internal walls and accessories of said blast furnace is carried out in accordance with the main patent, characterized in that. during said visual examination, a discontinuous blowing of a gas is carried out in the direction of the part of the load or of the furnace which is observed. 2. Procédé de contrôle suivant la revendi- cation 1, caractérisé en ce que l'on insuffle par intermittence un gaz inerte vis-à-vis des matières au contact desquelles il est insufflé. 2. A control method according to claim 1, characterized in that a gas is intermittently blown in with respect to the materials in contact with which it is blown. 3. Dispositif de contrôle pour la mise en oeuvre des procédés de l'une ou l'autre des revendications 1 et 2, comportant des appareils émetteur et récepteur de rayons optiques ainsi qu'un organe de protection conformément au brevet principal et aux précédentes additions, caractérisé en ce qu'il comporte au moins une conduite d'insufflation de gaz logée à l'intérieur des parois extérieures creuses de-la sonde, l'ex- trémité de ladite ou desdites conduite (s) d'insufflation étant disposée à l'inférieur du conduit central de la sonde, au-delà de l'organe de protection transparent qui sépare le syatème optique de la sonda de l'atmosphère régnant dans le haut fourneau. 3. Control device for the implementation of the methods of either of claims 1 and 2, comprising apparatus for emitting and receiving optical rays as well as a protection member in accordance with the main patent and the preceding additions. , characterized in that it comprises at least one gas insufflation pipe housed inside the hollow outer walls of the probe, the end of said insufflation pipe (s) being disposed at the lower part of the central duct of the probe, beyond the transparent protection member which separates the optical system of the probe from the atmosphere prevailing in the blast furnace.
BE739657D 1969-09-30 1969-09-30 Visual examination of blast furnace BE739657A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE739657 1969-09-30

Publications (1)

Publication Number Publication Date
BE739657A true BE739657A (en) 1970-03-31

Family

ID=3855431

Family Applications (1)

Application Number Title Priority Date Filing Date
BE739657D BE739657A (en) 1969-09-30 1969-09-30 Visual examination of blast furnace

Country Status (1)

Country Link
BE (1) BE739657A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110682011A (en) * 2019-10-23 2020-01-14 包宇峰 Laser cutting equipment with protection function for tubular part

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110682011A (en) * 2019-10-23 2020-01-14 包宇峰 Laser cutting equipment with protection function for tubular part

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