EP3938547B1 - Canon de rebouchage de trou de coulée - Google Patents

Canon de rebouchage de trou de coulée Download PDF

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Publication number
EP3938547B1
EP3938547B1 EP19711076.0A EP19711076A EP3938547B1 EP 3938547 B1 EP3938547 B1 EP 3938547B1 EP 19711076 A EP19711076 A EP 19711076A EP 3938547 B1 EP3938547 B1 EP 3938547B1
Authority
EP
European Patent Office
Prior art keywords
material chamber
nozzle part
ring segment
tap hole
edge portion
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.)
Active
Application number
EP19711076.0A
Other languages
German (de)
English (en)
Other versions
EP3938547A1 (fr
Inventor
Franck MORELLATO
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.)
TMT Tapping Measuring Technology SARL
Original Assignee
TMT Tapping Measuring Technology SARL
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 TMT Tapping Measuring Technology SARL filed Critical TMT Tapping Measuring Technology SARL
Publication of EP3938547A1 publication Critical patent/EP3938547A1/fr
Application granted granted Critical
Publication of EP3938547B1 publication Critical patent/EP3938547B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/15—Tapping equipment; Equipment for removing or retaining slag
    • F27D3/1509—Tapping equipment
    • F27D3/1536—Devices for plugging tap holes, e.g. plugs stoppers
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/12—Opening or sealing the tap holes
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/42—Constructional features of converters
    • C21C5/46—Details or accessories
    • C21C5/4653—Tapholes; Opening or plugging thereof

Definitions

  • the invention relates to a taphole gun with a material chamber for accommodating a volume of plugging compound, a mouthpiece for introduction into a taphole and a nozzle part which tapers towards the mouthpiece and is connected to the material chamber by means of a detachable connecting device.
  • Taphole guns of the type mentioned above are used to close the tapholes of reduction or smelting furnaces, e.g. During the tamping operation, the taphole tamping gun is pressed against the kiln breast with great force by means of a pivoting device, with the pressing force being maintained until the plastic tamping mass pressed through the mouthpiece of the taphole tamping gun into the taphole opening of the kiln has hardened.
  • the stuffing compound is received in a material chamber of the taphole gun, which is regularly designed as a cylinder space, and is removed from the material chamber by means of a tamping piston is pressed through the mouthpiece of the taphole tamping gun into the taphole opening.
  • a regularly cone-shaped nozzle part is arranged between the material chamber and the mouthpiece, which is interchangeably connected to the material chamber via a connecting device.
  • a taphole gun which has a nozzle part which is connected to the material chamber via a flange connection.
  • the flange connection connects the nozzle part to the material chamber in a connection plane arranged perpendicularly to the ejection direction, with connecting bolts arranged distributed over the circumference of the taphole tamping gun and each extending parallel to the ejection direction connecting two opposite flanges arranged on the material chamber and the nozzle part to form the flange connection .
  • the present invention is therefore based on the object of proposing a taphole gun which has a connecting device which on the one hand enables a secure mechanical connection between the material chamber and the nozzle part and on the other hand enables the nozzle part to be replaced with comparatively little assembly effort.
  • the taphole gun according to the invention has the features of claim 1.
  • the material chamber and the nozzle part have axial connecting projections formed complementary to one another on two opposite axial connecting edges of a chamber wall of the material chamber and a nozzle wall of the nozzle part, such that the connecting projection formed on an upper part of the nozzle part rests on the one on a lower part of the between the connecting projection of the nozzle part and the upper part of the material chamber and/or between the connecting projection of the material chamber and the lower part of the nozzle part, a radial form-fitting engagement is formed, which is non-positively secured by means of a radially acting securing device.
  • the design of the connecting device according to the invention makes it possible to absorb the ejection forces that act separatingly on the connecting device through the form fit formed between the connecting projections, so that the radially effective securing device is only required to secure the arrangement of the connecting projections on one another, without the securing device for Recording the extrusion forces would be needed. Rather, the securing device serves to secure the position of the connecting projections in a plane that is perpendicular to the ejection direction.
  • the safety device can be arranged in such a way that access only from the top of the taphole gun is sufficient.
  • the connecting device it is possible to enable the establishment of the connection or the disconnection of the connection between the nozzle part and the material chamber by accessing the connecting device from the top of the taphole gun, so that it is also not necessary to remove any shielding device that may be arranged on the underside of the taphole gun as a prerequisite for access to the connecting device.
  • the connecting device enables both a secure mechanical connection between the material chamber and the nozzle part and simplified assembly work when replacing the nozzle part.
  • a ring segment web is formed radially inside on the nozzle wall to form the form-fitting engagement on a connecting wall section on the connecting projection of the nozzle part and/or a ring segment web is formed radially on the outside of the nozzle wall on a connecting edge section on the lower part of the nozzle part and engages in a ring segment groove formed on a connecting edge section on the connecting projection of the material chamber radially on the inside of the chamber wall.
  • the form-fitting engagement that is advantageously designed in this way makes it possible to carry out the form-fitting engagement without affecting the outer contour of the taphole gun, so that the transition between the nozzle part and the material chamber is designed to be essentially flush, particularly on the underside of the taphole gun, so that a correspondingly close radially adjacent Arrangement of an optionally arranged on the underside shielding device is possible and thus the arrangement of a shielding device on the taphole gun is made possible without the external dimensions of the taphole gun being significantly increased as a result.
  • connecting edge sections of the nozzle part are each provided with an annular segment web extending essentially over the entire length of the connecting edge sections and the connecting edge sections of the material chamber are each provided with an annular segment groove extending essentially over the entire length of the connecting edge sections, a continuous distribution of the connecting forces over the ensures the entire scope of the taphole gun or the connecting device.
  • the radially inner annular segment groove formed in the connecting projection of the material chamber preferably extends over a circumferential angle > 180°, such that mutually opposite ring segment groove ends have a vertical extension for the formation of vertical guides for ends of the ring segment web formed on the connecting projection of the nozzle part, so that the joining process is guided during the production of the form-fitting engagement.
  • connecting projections are detachably connected to one another on horizontal connecting edge sections lying opposite one another in order to form the securing device, the configuration of the securing device with only two securing elements is possible.
  • the safety device preferably has two bolt connections arranged in the region of the horizontal connection edge sections on the circumference of the taphole tamping gun.
  • the bolted connections are used for the non-positive connection of a connecting strap arranged on the horizontal connecting edge section of the nozzle part and a connecting strap arranged on the horizontal connecting edge section of the material chamber, the bolted connections can be realized in the simplest possible way.
  • the bolted connections each have a bolt, preferably designed as a threaded bolt, which is provided with a protective device arranged between the bolt and the mouthpiece and shielding the bolt from external influences, so that the function or handling of the bolted connection is not affected by external influences, such as metal or slag spatter coming from the tapping channel, which could possibly lead to corresponding deposits on the bolt connection.
  • a protective device arranged between the bolt and the mouthpiece and shielding the bolt from external influences, so that the function or handling of the bolted connection is not affected by external influences, such as metal or slag spatter coming from the tapping channel, which could possibly lead to corresponding deposits on the bolt connection.
  • At least one connecting strap of the bolted connections is provided with a protective web extending parallel to the bolt.
  • FIG 1 shows a taphole gun 20, shown with its essential components, with a—as in particular from the illustration according to FIG 4 emerges - designed as a hollow cylinder material chamber 21, which serves to accommodate a stuffing compound, which is filled into the material chamber 21 via a filling opening not shown in detail here and compressed in the material chamber 21 by means of a piston 22 guided in the material chamber 21 and from a via a nozzle part 23 with the material chamber 21 in communication mouthpiece 24, which is formed independently of the nozzle part 23 in the case of the present embodiment of the taphole gun 20, can be output into a not shown here taphole of a furnace device.
  • a stuffing compound which is filled into the material chamber 21 via a filling opening not shown in detail here and compressed in the material chamber 21 by means of a piston 22 guided in the material chamber 21 and from a via a nozzle part 23 with the material chamber 21 in communication mouthpiece 24, which is formed independently of the nozzle part 23 in the case of the present embodiment of the taphole gun 20, can be output into a not shown here tap
  • the nozzle part 23 enables a reduction in the inner diameter of the taphole gun 20 required for the transition from the material chamber 21 to the mouthpiece 24 and is truncated for this purpose, in particular obliquely truncated in the present embodiment.
  • a connecting device 25 formed between the material chamber 21 and the nozzle part 23 as a result of the compression forces transmitted from the piston 22 to the tamping mass, which, like 6 1 shows an axial connecting projection 28 and for producing a form-fitting connection between the material chamber 21 and the nozzle part 23 on an axial connecting edge 26 of a chamber wall 27 of the material chamber 21 has a connecting projection 30 on an axial connecting edge 54 of a nozzle wall 29 of the nozzle part 23 .
  • the connecting projection 30 of the nozzle part 23 is formed on an upper part 31 of the nozzle part 23 and the connecting projection 28 of the material chamber 21 is formed on a lower part 32 of the material chamber 21, so that the connecting projection 30 of the nozzle part 23 rests on the one formed on the material chamber 21 Connecting projection 28 rests, a radial form-fitting engagement being formed between the connecting projection 30 of the nozzle part 23 and a connecting edge section 33 on an upper part 34 of the material chamber 21 on the one hand and the connecting projection 28 of the material chamber 21 and a connecting edge section 35 on a lower part 36 of the nozzle part 23 on the other hand .
  • nozzle part 23 is on the one hand in a relative arrangement immediately before the production of the form-fitting engagement ( 6 ) and on the other hand in a relative arrangement immediately after the production of the form-fitting engagement ( 2 ) show, it is understandable that the nozzle part 23 is already secured in its relative position in the connection to the material chamber 21 by the effect of gravity after the positive engagement has been produced.
  • a radially effective securing device 37 is provided in addition to the form-fitting engagement, which is attached to horizontal connecting edge sections 38, 39 ( 6 ) one bolt connection each 40, 41 ( 1 ) have , which by means of a threaded bolt, not shown here, two opposite each other on the connecting edge portion 38 of the connecting projection 30 of the nozzle part 23 and on the connecting edge portion 39 of the connecting projection 28 connect the material chamber 21 formed connecting tabs 42 and 43 with each other.
  • the connecting projections 28, 30 are therefore secured in their radial arrangement by the bolt connections 40, 41, so that compression forces occurring in the taphole tamping gun 20 cannot lead to the form-fitting engagement formed between the connecting projections 28, 30, which is used to accommodate the axial portion which serves to compress forces is released.
  • a ring segment web 45 ( 4 ) is formed, which extends into an annular web groove 47 ( figure 5 ) intervenes.
  • a ring segment web 49 is formed radially on the outside on the nozzle wall 29, which engages in a ring segment groove 51 formed on a connecting edge section 50 on the connecting projection 28 of the material chamber 21, radially on the inside on the chamber wall 27.
  • the radially inner annular segment groove 51 formed in the connecting projection 28 of the material chamber 21 extends over a circumferential angle > 180° in such a way that opposite groove ends 52, 53 of the annular segment groove 51 can be used to form vertical guides for the ends of the Ring segment web 45, which extend vertically accordingly, can serve during the production of the engagement.
  • the bolt connections 40, 41 are designed so that a along a bolt axis 55, the connecting straps 42, 43 that connects the bolts non-positively to one another, which is preferably designed as a threaded bolt 75, through a protective device 56, which is formed from protective webs 57, 58 formed vertically on the connecting straps, which at the same time enable the connecting straps 42, 43 to be rigidly formed, to the mouthpiece 24 is protected against external influences.
  • a shielding device 76 is arranged on the lower part 32 of the material chamber 21 or on the lower part 36 of the nozzle part 23 , in particular to protect against thermal radiation emitted from below the taphole tamping gun 20 against the taphole tamping gun 20 .
  • the mouthpiece 24 is designed as a component formed independently of the nozzle part 23, with a hinge joint arrangement 59 being provided for connecting the mouthpiece 24 to the nozzle part 23, which has two oppositely arranged hinge joints 60, 61, which each a joint plate arrangement 64 formed here from two joint plates 62, 63 arranged parallel to one another and in the present case only one joint plate 65 having joint plate arrangement 66 of the nozzle part 23, which are connected to one another via a joint pin 67.
  • the joint plate 65 arranged on the mouthpiece 24 has a reveal section 68 of a joint eye 69 which is wedge-shaped in the direction of a joint axis 77 and which forms a wedge section 70 ( 9 ) of the hinge pin 67 has a complementary wedge formation, such that when the hinge pin 67 is arranged in the hinge joints 60, 61, the hinge pin, as in 7 shown, the joint strap arrangement 64 of the nozzle part 63 connects to the joint strap 65 of the mouthpiece 24 in such a way that the wedge section 70 is arranged in the joint eye 69 of the joint strap 65 and is non-rotatably connected to the joint strap 65 .
  • both hinge joints 60, 61 arranged opposite one another are provided with the joint pin 67 to form the joint axis 77, so that the mouthpiece 24 is fixed in relation to the nozzle part 23 and, if necessary, can be inserted into the taphole with a feed movement of the taphole tamping gun 20.
  • the mouthpiece 24 can be swiveled open on one side about the hinge axis 77 formed by the hinge pin 67 remaining in the hinge joint 60 or 61, for example for maintenance purposes.
  • the mouthpiece 24 can be pivoted about a joint axis 77 either in one direction or the other.
  • an engagement device is formed between opposing axial connecting edges 71, 72 of the nozzle part 23 and the mouthpiece 24, which here consists of an annular web 73 formed on the connecting edge 71 of the nozzle part 23 on the one hand and an annular groove formed on the connecting edge 72 of the mouthpiece 24 74 on the other hand is formed and a radial sealing of the connection formed by the hinge joint arrangement 59 between the nozzle part 23 and the mouthpiece 24 is made possible.
  • the annular web 73 preferably has a truncated cone-shaped cross section which is designed to be complementary to the cross section of the annular groove 74 . Due to the wedge effect made possible between the reveal sections 68 of the joint straps 65 and the wedge sections 70 of the joint bolts 67, an axial sealing force acting between the nozzle part 23 and the mouthpiece 24 can be generated by inserting the joint bolts 67 into the joint eyes 69 of the joint straps 65, with which a effective sealing relative arrangement between the mouthpiece 24 and the nozzle part 23 can be achieved.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Metallurgy (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Coating Apparatus (AREA)
  • Nozzles (AREA)
  • Supply Of Fluid Materials To The Packaging Location (AREA)
  • Blast Furnaces (AREA)
  • Furnace Charging Or Discharging (AREA)

Claims (9)

  1. Canon de bouchage (20) de trous de coulée comprenant une chambre de matériau (21) pour recevoir une masse de bouchage, un embout (24) pour être introduit dans un trou de coulée et une partie de buse (23) qui est conique dans la direction de l'embout (24) et reliée à la chambre de matériau au moyen d'un moyen de liaison (25) amovible,
    caractérisé en ce que
    pour réaliser le moyen de liaison (25), la chambre de matériau (21) et la partie de buse (23) ont des saillies de liaison (28, 30) axiales complémentaires sur deux bords de liaison (26, 54) axiaux opposés d'une paroi de chambre (27) de la chambre de matériau (21) et d'une paroi de buse (29) de la partie de buse (23) de manière que la saille de liaison (30) formée sur une partie supérieure (31) de la partie de buse (23) est disposée sur une partie inférieure (32) de la chambre de matériau (21), un engagement positif étant établit entre la saille de liaison (30) de la partie de buse (23) et la partie supérieure (34) de la chambre de matériau (21) et/ou la saillie de liaison (28) de la chambre da matériau (21) et la partie inférieure (36) de la partie de buse (23), ledit engagement positif étant sécurisé de manière à être solidaire au moyen d'un moyen de sécurité (37) agissant radialement.
  2. Canon de bouchage de trous de coulée selon la revendication 1,
    caractérisé en ce que
    pour réaliser l'engagement positif, une barrette (45) de segment annulaire est formée sur une section (44) de bord de liaison sur la saillie de liaison (30) de la partie de buse (23) radialement à l'intérieur sur la paroi de buse (29), ladite barrette (45) de segment annulaire venant en prise avec une rainure (47) de segment annulaire formée sur une section (46) de bord de liaison sur la partie supérieure (34) de la chambre de matériau (21) radialement à l'extérieur sur la paroi de chambre (27), et/ou une barrette (49) de segment annulaire est formée sur une section (48) de bord de liaison sur la partie inférieure (36) de la partie de buse (23) radialement à l'extérieur sur la paroi de buse (29), ladite barrette (49) de segment annulaire venant en prise avec une rainure (51) de segment annulaire formée sur une section (50) de bord de liaison sur la saillie de liaison (28) de la chambre de matériau (21) radialement à l'intérieur sur la paroi de chambre (27).
  3. Canon de bouchage de trous de coulée selon la revendication 1 ou 2,
    caractérisé en ce que
    chaque section (44, 48) de bord de liaison de la partie de buse (23) est pourvue d'une barrette (45, 49) de segment annulaire qui s'étend essentiellement sur toute la longueur de la section (44, 48) de bord de liaison, et chaque section (33, 50) de bord de liaison de la chambre de matériau (21) est pourvue d'une rainure (47, 51) de segment annulaire qui s'étend essentiellement sur toute la longueur de la section (33, 50) de bord de liaison.
  4. Canon de bouchage de trous de coulée selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    la rainure (51) de segment annulaire radialement intérieure formée dans la saillie de liaison (28) de la chambre de matériau (21) s'étend sur un angle circonférentiel de > 180° de manière que des extrémités (52, 53) opposées de la rainure de segment annulaire s'étendent dans la direction verticale pour former des guidages verticaux pour des extrémités de la barrette (45) de segment annulaire formées sur la saillie de liaison (30) de la partie de buse (23).
  5. Canon de bouchage de trous de coulée selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    pour réaliser le moyen de sécurité (37), les saillies de liaison (28, 30) sont reliées l'une à l'autre de manière amovible sur des sections (38, 39) de bord de liaison horizontales opposées.
  6. Canon de bouchage de trous de coulée selon la revendication 5,
    caractérisé en ce que
    le moyen de sécurité (37) a deux liaisons par boulon (40, 41) disposées sur la circonférence du canon de bouchage (20) de trous de coulée dans la zone des sections (38, 39) de bord de liaison horizontales.
  7. Canon de bouchage de trous de coulée selon la revendication 6,
    caractérisé en ce que
    les liaisons par boulon (40, 41) chacune servent à relier des pattes de liaison (42, 43) disposées sur une section (38) de bord de liaison horizontale de la partie de buse (23) et sur une section (39) de bord de liaison horizontale de la chambre de matériau (21) de manière à être solidaire.
  8. Canon de bouchage de trous de coulée selon la revendication 6 ou 7,
    caractérisé en ce que
    chaque liaison par boulon (40, 41) a un boulon qui est, de préférence, réalisé comme boulon fileté (75) et est pourvu d'un moyen de protection (56) qui est disposé entre le boulon et l'embout (24) et protège le boulon contre des influences extérieures.
  9. Canon de bouchage de trous de coulée selon la revendication 8,
    caractérisé en ce que
    pour réaliser le moyen de protection (56), au moins une patte de liaison (42, 43) de chaque liaison par boulon (40, 41) est pourvue d'une âme protectrice (57, 58) qui s'étend parallèlement au boulon.
EP19711076.0A 2019-03-13 2019-03-13 Canon de rebouchage de trou de coulée Active EP3938547B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2019/056261 WO2020182303A1 (fr) 2019-03-13 2019-03-13 Canon de rebouchage de trou de coulée

Publications (2)

Publication Number Publication Date
EP3938547A1 EP3938547A1 (fr) 2022-01-19
EP3938547B1 true EP3938547B1 (fr) 2023-02-15

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19711076.0A Active EP3938547B1 (fr) 2019-03-13 2019-03-13 Canon de rebouchage de trou de coulée

Country Status (9)

Country Link
US (1) US20220178615A1 (fr)
EP (1) EP3938547B1 (fr)
JP (1) JP7166469B2 (fr)
KR (1) KR102556111B1 (fr)
CN (1) CN113574185B (fr)
CA (1) CA3129886C (fr)
TW (1) TWI766246B (fr)
UA (1) UA126844C2 (fr)
WO (1) WO2020182303A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7450326B2 (ja) 2017-07-19 2024-03-15 大阪化成株式会社 機能性繊維およびその製造方法
EP3938548B1 (fr) * 2019-03-13 2023-05-03 Tmt - Tapping Measuring Technology Sàrl Canon de rebouchage de trou de coulée

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Also Published As

Publication number Publication date
EP3938547A1 (fr) 2022-01-19
KR102556111B1 (ko) 2023-07-14
KR20210126041A (ko) 2021-10-19
TWI766246B (zh) 2022-06-01
CA3129886A1 (fr) 2020-09-17
BR112021017123A2 (pt) 2021-11-03
JP7166469B2 (ja) 2022-11-07
CA3129886C (fr) 2024-01-16
JP2022522471A (ja) 2022-04-19
TW202040076A (zh) 2020-11-01
CN113574185A (zh) 2021-10-29
US20220178615A1 (en) 2022-06-09
CN113574185B (zh) 2022-10-25
UA126844C2 (uk) 2023-02-08
WO2020182303A1 (fr) 2020-09-17

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