EP0111283A1 - Appareil suspendu pour le remplacement du busillar-porte-vent - Google Patents

Appareil suspendu pour le remplacement du busillar-porte-vent Download PDF

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Publication number
EP0111283A1
EP0111283A1 EP83112198A EP83112198A EP0111283A1 EP 0111283 A1 EP0111283 A1 EP 0111283A1 EP 83112198 A EP83112198 A EP 83112198A EP 83112198 A EP83112198 A EP 83112198A EP 0111283 A1 EP0111283 A1 EP 0111283A1
Authority
EP
European Patent Office
Prior art keywords
removal device
nozzle
support frame
support
assembly
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
EP83112198A
Other languages
German (de)
English (en)
Other versions
EP0111283B1 (fr
Inventor
Pierre Mailliet
Edgar Kraemer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Paul Wurth SA
Original Assignee
Paul Wurth SA
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 Paul Wurth SA filed Critical Paul Wurth SA
Priority to AT83112198T priority Critical patent/ATE21936T1/de
Publication of EP0111283A1 publication Critical patent/EP0111283A1/fr
Application granted granted Critical
Publication of EP0111283B1 publication Critical patent/EP0111283B1/fr
Expired legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/16—Tuyéres
    • C21B7/166—Tuyere replacement apparatus

Definitions

  • the invention relates to a hanging nozzle assembly device, in particular a nozzle assembly device for blast furnaces with a hot wind ring line running circularly and concentrically to the furnace axis, on which the nozzle assembly device is suspended by means of rollers on rails, which form a mechanical unit with the hot wind ring line, and can be moved along these.
  • the hearth of a blast furnace is fed via a series of so-called wind forms arranged in the furnace wall with a hot wind, which can be enriched with oxygen.
  • the hot wind is supplied by the hot air heaters to a ring line which gives the blast furnace and from there it reaches the individual wind forms via so-called nozzle sticks.
  • These nozzle assemblies essentially consist of a down pipe which runs obliquely downwards from the ring line and is provided with devices for compensating for thermal expansions, a bend connected to this down pipe and finally a so-called blowing nozzle which horizontally connects this bend to the wind form.
  • the designer naturally offers a multitude of options, among which, however, only those can take into account which promise the best possible ratio of effort to efficiency, with a minimal furnace shutdown, as mentioned above as inevitable, also being striven for in terms of efficiency.
  • German patent application 28333o3 A proposal to solve this constructive requirement, which has already proven itself in practice, will be described in German patent application 28333o3.
  • remote-controlled, appropriately designed handling tools are mounted on a lifting arm of a floor vehicle by the vehicle driver, with the aid of which the nozzle assembly is removed. Since this vehicle can be designed as a multi-purpose vehicle, when comparing this system with others it must be taken into account that the vehicle is used during the period when it is not used for the exchange of wind forms, and this is of course the case for most of the furnace operating time , can be used for other in-house use, which minimizes the actual outlay on equipment for removing the nozzle assembly.
  • the proposed hanging nozzle assembly device is generally referred to with the reference number lo. It hangs by means of outer rollers 12, 12 ' and inner rollers 14, 14 'on rails 16 and 18, respectively, which in turn are fastened to the hot wind ring line 20 of the blast furnace, which is shown partly in section.
  • the rails 16, 18 preferably consist of I or U profiles.
  • a part of the blast furnace wall in the area of a molding box 22, a cooling ring 24 and a wind mold 26 (shown schematically) is shown in section and designated by the reference number 28.
  • Upstream of the windform 26 is the nozzle assembly 27, consisting of a blowing nozzle 3o with an elbow 32 and an inclined downpipe 34. The latter is connected to the ring line 2o.
  • the rollers 12, 12 ', 14, 14' are the driving rollers of a carriage 36, with the aid of which the removal device 10 is brought into position in front of the nozzle assembly 27 to be removed.
  • the frame of this carriage 36 is made in two parts, namely it consists of a Y-shaped part 38, seen from above (FIG. 2), with the driving rollers 12, 12 'and a straight, horizontal connecting support 40 between the rollers 14, 14'.
  • the leg 42 of the Y-shaped part 38 is mounted in the center by means of a pivot bearing 44 on the connecting support 40, so that the load present at this point is evenly distributed over the rollers 14, 14 '.
  • the carriage 36 moves along the rails 16, 18 by actuation of self-locking gears 46, 48 acting on the outer 12, 12 'and / or inner rollers 14, 14', which in turn are manually operated with the aid of chain hoists 5o, 52, be operated.
  • a yoke 56 Pivotally mounted on the carriage 36 around a vertical axis 54 is a yoke 56, each with two hinwe g thereof extending arms 58,58 'and 6 0, 6 0'.
  • the arms 58, 58 ' run essentially horizontally and have at their end a pivot point 62 for the extremity of the piston rod 64 of a double-acting hydraulic cylinder 66, while the arms 6 0 , 6 0 ' run obliquely downwards to the right (in FIG. 1) and on have articulation points 68,68 'at their ends.
  • the yoke 56 with the arms 58, 58 'and 6 0 , 6 0 ', hereinafter briefly with swivel support 7o referred to, is also operated by means of chain hoist 72 and a self-locking worm gear 74, ie pivoted about the vertical axis 54.
  • a self-locking gear is important since the load can generate undesirable torque about the axis 54 if the latter is not exactly vertical, which can be the case due to assembly inaccuracies, warping of the ring line, etc.
  • a support frame 78 is suspended from the swivel support 7o and the hydraulic cylinder 66 articulated thereon with a cylinder-side articulation point 76, the lower part 8 0 of which essentially consists of two rails 82, 84, preferably with a U-profile, in which an assembly carriage 86 on rollers 88 , 88 'and 9o, 9o' can be moved essentially horizontally.
  • the body of the assembly carriage 86 is preferably essentially tubular.
  • the upper part 92 of the support frame 72 is also preferably tubular. Upper part 92 and lower part 8o are rigidly connected to one another by suitably shaped steel plates 94, 96 (hidden by rails 16 and 18 in FIG. 2).
  • the assembly carriage 86 is also moved here by a manually operated, self-locking worm gear (not shown) with drive wheel 98, and a rack and pinion drive with pinion loo on the output shaft of the worm gear and rack lo2 (teeth not shown) attached to the upper part 92 at the upper part of the Assembly trolley 86.
  • the self-locking worm gear has the purpose of rendering forces in the direction of travel of the assembly trolley 86 ineffective due to the load.
  • Such forces arise e.g. among other things, when the support frame 78 together with the assembly carriage 86 is pivoted out of the horizontal by actuating the hydraulic cylinder 66 about the articulation points 68, 68 '.
  • the hydraulic cylinder 66 with the articulation points 62 on the swivel support 70 and 76 on the upper part 92 of the support frame 78 which can be swiveled about the articulation points 68, 68 'is double-acting and is manually operated by a hand pump, not shown, similar to a jack.
  • An electrical or air powered hydraulic power device can also be used to facilitate operation.
  • the tubular body of the assembly carriage 86 is extended in the direction of the blast furnace wall in the form of a cantilever arm lo4.
  • Its limb lo6 is designed accordingly, e.g. in the form of a flange in order to be able to attach the tools suitable for removing and installing the nozzle block.
  • this tool consists of a support frame lo8, in which a support bracket llo for the blowing nozzle 3o and elbow 32 can be mounted.
  • the support frame lo8 can e.g. consist of two L-shaped flat steels 112, 112 ′ which are fastened to the extremity lo6 of the arm lo4, preferably with the aid of a known pin / plug-in wedge connection (not shown).
  • the support stool llo is a simplified version of an analog stool adapted to the proposed nozzle block removal device, the structure and mode of operation of which are described in detail in the document mentioned above.
  • This stool llo seen from the side ( Figure 1), has a rock-like shape and essentially consists of two side pieces, e.g. cradle-shaped flat steels 114, 114 'connected to (not visible) cross struts, on the furnace-side cross struts of which two rollers 116, 116' are rotatably mounted.
  • This roller mounting on a support bracket refer to the cited patent.
  • the support frame llo can form a unit with the support frame lo8 by constantly being pivotally connected to the support frame lo8 at pivot points 118, 118 '. However, it can also be connected to this support frame lo8 only before the nozzle assembly is removed, e.g. with the help of a plug pin through points 118, 118 '. In this case, the support frame lo8 can not only serve to hold the stool, but also, after removing the latter, to hold other dismantling tools.
  • FIGS. 3, 4 and 5 show different, successive steps in the dismantling of blowing nozzle 3o together with elbow 32.
  • the arm lo4 is pivoted upwards by a certain angle (FIG. 3) from the horizontal by actuating the cylinder 66 (FIG. 1) until the rollers 116, 116 'come to rest on the fastening flange 12o of the blowing nozzle 3o and the elbow 32.
  • the stool llo is only connected to the support frame lo8 at the pivot points 118, 118 ', for example by means of plug bolts (see also FIG. 3a).
  • the stool llo is pivoted up manually around the pivot points 118, 118 'until bores 122, 122' in the stool llo are aligned with an eyelet 124 on the elbow 32, whereupon by inserting a plug pin or the like, stool llo and elbow 32 (with a blowing nozzle 3 0 ) at point 124.
  • the stool llo then assumes the position in relation to the arm lo8 as best shown in FIG. 3a, that is to say that bores 126, 126 ' in the stool are essentially above bores 128, 128' in the support frame lo8.
  • the next phase consists in loosening the screw connection (not shown) between the flanges of the downpipe 34 and the elbow 32.
  • the arm lo4 is then lowered by corresponding actuation of the cylinder 66, the blow nozzle mouthpiece being supported on the wind form 26 at 13o and the elbow 32 with the left part (in FIG. 4) of the stool llo goes down a greater distance than the points 118, 118 '.
  • the bores 126, 126 'in the stool llo come into alignment with the bores 128, 128' in the support frame lo8, so that the stool llo and support frame lo8 can be connected to one another by a plug pin.
  • FIG. 5 shows the position of assembly trolley 86 and manifold 32 with blowing nozzle 3o after the extraction process has ended.
  • the support frame lo8 with the nozzle block parts mounted on it can now be picked up and moved away by a forklift 132.
  • the use of a turntable pallet 134 is advantageous here. It goes without saying that, due to the furnace wall 28, the forklift 132 cannot in fact assume the position shown in FIG. 5 (for illustration's sake), just as the support frame lo8 has not been received by the horn-type forklift 132 in the position of the blowing nozzle 30 shown the molding box 22 must be done.
  • the load can be brought to any point below the ring line 20 and can be pivoted into an arbitrary position about the vertical axis 54 by actuating the chain hoist 72.
  • One is therefore largely free to choose the point at which the load is picked up by the forklift, although normally moving the carriage 36 along the rails 16, 18 will also be kept to a minimum. Moving the load along the rails 16, 18 cannot be avoided if the forklift truck path is interrupted under the nozzle assembly to be removed.
  • the support frame lo8 can simply be hooked onto the arm lo4 of the assembly carriage 86, instead of the support frame and the arm being connected to one another by a pin / plug-in wedge connection, or the like PN.
  • This attachment by means of pin 136 and hook 138 is shown schematically in FIGS. 5 and 5a and indicated in FIGS. 3a and 4a.
  • FIGS. 6 and 7 show the removal of the wind form 26, which can also be carried out with the aid of the proposed nozzle block removal device.
  • a known windform extraction device 14o is mounted, for which purpose the bores 218 and 228 which are present on the support frame 2o8 and which correspond to the bores 118 and 128 in FIG. 3a can be used.
  • the extraction device 14o is articulated directly at 218 on the support frame 2o8 and on plug pins through the bores 228 with the interposition of an adjusting spindle 142.
  • the extraction rod 148 can be brought into any desired position in relation to the wind form 26.
  • the extraction process itself and any support (not shown) between the extraction device 14o and the cooling ring 24 to prevent undesired loosening of the same in the furnace wall and in the molding box 22 are described in more detail in the aforementioned patent specification.
  • FIG. 7 shows the wind form in the extended position.
  • the Windform 26 can now be deflected into a stool on the work platform and replaced by a new Windform (for installation).
  • the support frame 2o8 together with the extraction device 14o and Wihdform 26 can, however, also be picked up and moved away by a lift truck, analogously to FIG. 5, this lift of the load by the lift truck, as mentioned above, at a practically arbitrary point in the area of the ring line 2o can be done.
  • FIG. 8 shows the removal of the inclined downpipe 34 of the nozzle block 27.
  • the nozzle block removal device can be provided with an adapter 15o, which essentially consists of a longitudinally adjustable, turnbuckle-like strut 152, a support and support arm 154, and an actuating lever 156.
  • the strut 152 is articulated on the one hand on a cantilever of the pivotable yoke 56 and on the other hand on the upper extremity of the support and support arm 154.
  • a bolt (not shown) is provided, which is connected to a Upper flange portion 158 of the downpipe 34 located hole (not shown) can be engaged.
  • the actuating lever 156 is a two-armed lever with the arms 166 and 168.
  • the fulcrum 17o of this two-armed lever 156 corresponds to a bearing on a first Ausleqer 172, which is rigidly connected to the upper part 92 of the support frame 78 (see also Figure 1).
  • the extremity of the arm 166-of the actuation lever 156 is articulated on the support and support arm 154, while the extremity of the arm 168 is articulated on the piston rod extremity of a manually operated actuation cylinder 174.
  • the actuation can be carried out analogously to the hydraulic cylinder 66, but also by means of an electrically or air-operated hydraulic power device.
  • this actuating cylinder 174 is articulated on a second arm 176, which in turn is also rigidly connected to the upper part 92. If the piston of cylinder 174 is retracted, i.e. When actuated to the left in the direction of arrow 178 in FIG. 8, the downpipe 34 is lowered into the position 34 ′ shown in dashed lines. Since the articulation points 17o, 18o, 182, 184 of parts 152 and 166 represent the corners of a parallelogram (see also FIG. 9), this lowering of the downpipe 34 corresponds kinematically to a shift, i.e. that the axis O of the downpipe 34 maintains its direction when lowered.
  • the upper parallelogram corner point 182 can be moved between the positions 182 'and 182 ", which facilitates the insertion of the above-mentioned bolt on the arm 154 into the hole in the flange part 158
  • the articulation point 17o of the lever 156 can be attached to the first rigidly attached to the upper part 92
  • Boom 172 can be shifted between the positions 17o 'and 17 0 "in that, with the help of the cylinder 66, the upper part 92 is pivoted about its articulation point 68 on the swivel support 7o. This makes it possible to remove the down pipe 34 from the ring line 2o Bring the support plates 162, 162 'to the flange 164 of the downpipe.
  • nozzle assembly removal device described is also used to reinstall the various nozzle assembly components. The handling movements then take place in essentially the reverse order.
  • the assembly carriage 86 could also be extended to the left (according to the position selected in the figures) by an extension arm similar to the extension arm lo4 pointing to the right.
  • the windform extraction device 14o could, for example, remain permanently installed if the space permits.
  • To remove the tuyere 26 of the pivot support would be pivoted about the vertical axis 54 by 18 ° 7o 0 then easily could be made whereby the extraction unit 14o also in the position shown in Figures 6 and 7 position.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Blast Furnaces (AREA)
  • General Preparation And Processing Of Foods (AREA)
  • Seal Device For Vehicle (AREA)
  • Window Of Vehicle (AREA)
  • Cleaning In General (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Coating With Molten Metal (AREA)
  • Processing Of Solid Wastes (AREA)
EP83112198A 1982-12-10 1983-12-05 Appareil suspendu pour le remplacement du busillar-porte-vent Expired EP0111283B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83112198T ATE21936T1 (de) 1982-12-10 1983-12-05 Haengende duesenstockausbauvorrichtung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LU84522A LU84522A1 (de) 1982-12-10 1982-12-10 Haengende duesenstockausbauvorrichtung
LU84522 1982-12-10

Publications (2)

Publication Number Publication Date
EP0111283A1 true EP0111283A1 (fr) 1984-06-20
EP0111283B1 EP0111283B1 (fr) 1986-09-03

Family

ID=19729995

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83112198A Expired EP0111283B1 (fr) 1982-12-10 1983-12-05 Appareil suspendu pour le remplacement du busillar-porte-vent

Country Status (9)

Country Link
US (1) US4582302A (fr)
EP (1) EP0111283B1 (fr)
AT (1) ATE21936T1 (fr)
BR (1) BR8306934A (fr)
CA (1) CA1220024A (fr)
DE (1) DE3365913D1 (fr)
ES (1) ES527547A0 (fr)
LU (1) LU84522A1 (fr)
ZA (1) ZA838934B (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6221313B1 (en) 1999-11-15 2001-04-24 North American Refractories Co. Taphole knockout device
CN110980518A (zh) * 2020-01-17 2020-04-10 东阳格盘机械科技有限公司 一种门吊夹轨器装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE428866C (de) * 1926-05-11 Gelsenkirchener Bergwerks Akt Vorrichtung zum Auswechseln der Armaturteile von Schachtoefen
US3459418A (en) * 1966-07-21 1969-08-05 Yawata Seitetsu Kk Blast furnace servicing apparatus
FR2314119A1 (fr) * 1975-06-13 1977-01-07 Usinor Appareil de manutention a auto-centrage, notamment pour busillon de porte-vent pour haut fourneau
US4087084A (en) * 1975-10-28 1978-05-02 Louis A. Grant, Inc. Apparatus for changing blast furnace tuyeres
US4266907A (en) * 1977-07-28 1981-05-12 Paul Wurth, S.A. Device for handling the various components of an installation for the injection of pre-heated air into a shaft furnace

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5237426B2 (fr) * 1972-06-15 1977-09-22
CA1119399A (fr) * 1978-12-07 1982-03-09 James L. Egan Dispositif de remplacement des tuyeres de haut-fourneau

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE428866C (de) * 1926-05-11 Gelsenkirchener Bergwerks Akt Vorrichtung zum Auswechseln der Armaturteile von Schachtoefen
US3459418A (en) * 1966-07-21 1969-08-05 Yawata Seitetsu Kk Blast furnace servicing apparatus
FR2314119A1 (fr) * 1975-06-13 1977-01-07 Usinor Appareil de manutention a auto-centrage, notamment pour busillon de porte-vent pour haut fourneau
US4087084A (en) * 1975-10-28 1978-05-02 Louis A. Grant, Inc. Apparatus for changing blast furnace tuyeres
US4266907A (en) * 1977-07-28 1981-05-12 Paul Wurth, S.A. Device for handling the various components of an installation for the injection of pre-heated air into a shaft furnace

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DERWENT JAPANESE PATENTS REPORT, Band 74, Nr. 21, 25. Juni 1974, Nr. M24 & JP - A - 49 019964 (OSAKE IRON & STEEL CO., LTD.) *
PATENTS ABSTRACTS OF JAPAN, Band 4, Nr. 46(C-6)(528), Seite 78C6 & JP - A - 55 018587 (KOBE SEIKOSHO K.K.) 08-02-1980 *

Also Published As

Publication number Publication date
CA1220024A (fr) 1987-04-07
ES8500331A1 (es) 1984-11-01
ES527547A0 (es) 1984-11-01
US4582302A (en) 1986-04-15
EP0111283B1 (fr) 1986-09-03
ATE21936T1 (de) 1986-09-15
BR8306934A (pt) 1984-07-24
ZA838934B (en) 1984-08-29
DE3365913D1 (en) 1986-10-09
LU84522A1 (de) 1984-10-22

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