EP0444006B1 - Einrichtung zum Ein- und Ausbringen einer Lanze in ein und aus einem metallurgischen Gefäss - Google Patents

Einrichtung zum Ein- und Ausbringen einer Lanze in ein und aus einem metallurgischen Gefäss Download PDF

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Publication number
EP0444006B1
EP0444006B1 EP91890014A EP91890014A EP0444006B1 EP 0444006 B1 EP0444006 B1 EP 0444006B1 EP 91890014 A EP91890014 A EP 91890014A EP 91890014 A EP91890014 A EP 91890014A EP 0444006 B1 EP0444006 B1 EP 0444006B1
Authority
EP
European Patent Office
Prior art keywords
lance
drive
metallurgical vessel
arrangement according
housing
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.)
Expired - Lifetime
Application number
EP91890014A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0444006A1 (de
Inventor
Norbert Dipl.-Ing. Ramaseder
Hubert Öllinger
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.)
Primetals Technologies Austria GmbH
Original Assignee
Voest Alpine Industrienlagenbau GmbH
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 Voest Alpine Industrienlagenbau GmbH filed Critical Voest Alpine Industrienlagenbau GmbH
Priority to AT91890014T priority Critical patent/ATE101877T1/de
Publication of EP0444006A1 publication Critical patent/EP0444006A1/de
Application granted granted Critical
Publication of EP0444006B1 publication Critical patent/EP0444006B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • C21C5/4606—Lances or injectors
    • C21C5/462—Means for handling, e.g. adjusting, changing, coupling

Definitions

  • the invention relates to a device for inserting and removing a lance, in particular a measuring and / or sampling lance, in and out of a tiltable metallurgical vessel, in particular a steelworks converter, the lance being guided by means of a drive arranged in the direction of the axis of the lance and is movable in the direction of its axis, and wherein the drive is pivotally mounted about two crossing axes and displaceable in the direction perpendicular to the axis of the lance in an approximately horizontal direction.
  • Devices for inserting and removing a lance are known from DE-C-27 38 291 and EP-A - 0 079 290.
  • the lance can be inserted into the wall of the metallurgical vessel through an opening provided specifically for this purpose, the upper end of the lance being mounted on a lance carrier carriage which is arranged alongside the converter and in the length of the lance length corresponding rails can be moved.
  • the guide for the lance carrier carriage can be displaced or inclined relative to the metallurgical vessel.
  • complex devices are necessary, since the guide for the lance carrier carriage is heavy due to its large length and must be built to be stable in order to avoid vibrations of the lance.
  • the guide for the lance carrier carriage and its support on the supporting structure of the steelworks hall requires a relatively large amount of space on the side of the converter, so that other manipulations, e.g. the insertion and removal of a probe on or from the lance is now difficult to carry out.
  • the known lance carrier carriages are moved along their guides by means of cable winches or chain hoists. There is a risk of a rope or chain break, causing damage to the lance and the metallurgical vessel.
  • a device for inserting and removing a lance is also known from US-A-4,637,592.
  • a device for retaining slag can be pivoted into a converter and inserted into a tap hole from the inside of the converter.
  • the device is attached to the end of a lance, and the lance is slidably inserted in a sleeve provided with a drive.
  • the sleeve is in turn pivotally attached to a stationary support structure.
  • a device of the type described in the opening paragraph is known from US-A-4,747,582.
  • the lance is rigidly attached to a guide, and this guide can be moved in the axial direction of the lance by means of a pressure medium cylinder.
  • Further pressure medium cylinders act on the guide of the lance, with the aid of which the guide of the lance can be pivoted about two crossing axes.
  • the guidance of the lance can be displaced in the horizontal direction approximately perpendicular to the longitudinal direction of the guidance of the lance and thus approximately perpendicular to the longitudinal axis of the lance. With the help of this device it is possible to guide the lance into different positions inside the metallurgical vessel.
  • the invention aims to avoid these disadvantages and difficulties and has as its object to design a device of the type described in such a way that it takes up little space and has great operational reliability.
  • the device should be particularly stable.
  • the device should enable a precise adjustment of the lance position relative to the metallurgical vessel with structurally simple and inexpensive means even if the metallurgical vessel does not always assume the same position after a tilting process.
  • horizontally extending rails are arranged on a stationary support frame, along which a support plate is slidably guided, on which support plate a base plate is pivotally mounted about an axis perpendicular to the support plate and on which base plate at least one in the direction of Axis of the lance fixed drive for the housing formed as a guide lance is pivotally mounted about an axis parallel to the guide rails, a sliding device for moving the support plate relative to the fixed support frame, a pivoting device for pivoting the base plate relative to the support plate and a further pivoting device are provided for pivoting the housing relative to the base plate.
  • a further drive for a further device that can be inserted into the metallurgical vessel, such as a scraper, is preferably provided in the housing.
  • the drive is designed as a friction wheel drive. This ensures problem-free movement of the lance in the axial direction, etc. even if the lance is dirty. If a malfunction occurs, for example due to a slag approach, the friction wheel drive, which is a kind of safety slip clutch, is not affected and the lance can be pulled out of the metallurgical vessel after the frictional engagement of the drive wheels has been switched off, e.g. by means of a crane. After cleaning the lance, the device is immediately ready for use again.
  • the friction wheel drive which is a kind of safety slip clutch
  • the housing expediently has a stripping device for cleaning the lance or the further device on its passage opening for the lance facing the metallurgical vessel or in the case of the presence of a further device for this device.
  • a braking device for braking and fixing the lance or, if there is a further device for braking and fixing the further device in relation to the housing, is advantageously provided in the housing.
  • the lance is advantageously hollow and the lance cavity is connected to a gas supply line.
  • a protective tube is provided in the interior of the hollow lance for measuring cables arranged in the interior of the lance, the protective tube advantageously being connected to a gas supply line.
  • a preferred design is characterized in that the friction wheel drive is formed by two pairs of friction wheels, one pair of friction wheels supporting the lance on two opposite sides and at least one friction wheel of a pair of friction wheels being drivable and this friction wheel and / or the opposite friction wheel of this pair of friction wheels against the lance is pressable.
  • the friction wheel drive is advantageously formed by at least three friction wheels, at least one of which can be driven and at least one can be pressed against the lance.
  • a method for positioning a lance relative to an opening of a tiltable metallurgical vessel, in particular a steelworks converter, using the device according to the invention is characterized in that an actual position of the metallurgical vessel is recorded by means of a position transmitter arranged on the vessel and devices for positioning the lance in Dependent on the recorded actual position.
  • the position of the lance is expediently determined by position sensors, etc. a displacement sensor that determines the position of the support plate, an angle sensor that determines the angular position of the base plate with respect to the support plate, an angle sensor that determines the angular position of the housing with respect to the base plate, and the values of the position sensor of the metallurgical vessel are sent to a computer and the latter controls the devices for positioning the lance, etc. the sliding device, the swiveling device and the swiveling device, etc. until the position sensors assigned to the lance match the position of the lance and the position of the opening of the metallurgical vessel.
  • FIG. 1 shows a side view of the device according to the invention with the lance shown in the retracted position and FIG. 2 shows a partially sectioned view in the direction of arrow 11 of FIG. 1.
  • Fig. 3 illustrates in a schematic representation a variant of the lance drive. 4 illustrates a method for positioning a lance in a schematic representation.
  • a steel mill converter 1 is shown in section, the section plane through the longitudinal axis of the converter and its tilt axis is led.
  • the mouth of the converter is labeled 2.
  • the converter 1 When the converter 1 is tilted, it can be moved along an arc that is perpendicular to the plane of the drawing or section.
  • a passage opening 4 is provided near the mouth 2 for introducing a lance 7 equipped with a measuring probe 5 and / or sampling probe 6.
  • the lance 7 can also be designed as a feed device for charging aggregates.
  • a stationary support frame e.g. the hall scaffold 8, arranged device 9, which is designed as follows:
  • a pivot pin 16 oriented perpendicular to it is arranged centrally on the support plate 14.
  • a pressure medium cylinder 18 is provided as a swivel drive, which is articulated on the one hand on an extension 19 of the base plate 17 and on the other hand on the support plate 14.
  • the base plate 17 is equipped with two bearing blocks 20 which are spaced apart from one another and parallel to one another and extend approximately perpendicularly to the base plate 17 to the front.
  • a housing 21 is inserted between these bearing blocks 20 and is pivotably mounted on the bearing blocks 20 via pivot pins 22.
  • a pressure medium cylinder 23 is provided as a swivel drive for the housing 21, which on the one hand on the base plate 17 and on the other hand on the housing 21 is articulated.
  • the axis of the pivot pin 22 and the axis of the pivot pin 16 do not have to intersect; they can also cross at a distance from each other, i.e. they are skew to each other.
  • the housing 21 is formed in two parts, wherein in each part of the housing 21 there are two wheel pairs 26, 27 which are arranged at a distance from one another in the direction of the longitudinal axis 24 of the lance 7 and are formed by friction wheels 25.
  • the friction wheels 25 are designed with lateral guide beads 28.
  • the friction wheels 25 of a first part of the housing 21 are in frictional engagement with a lance 7, the friction wheels 25 provided in the other part of the housing 21 are in frictional engagement with a scraper 29 which is used to clean the passage opening 4 of the converter 1 before a sampling or serves a measurement so that the sampling 6 or measuring probes 5 provided on the lance 7 cannot experience any damage when being introduced into the converter 1.
  • Each pair of friction wheels 26, 27 has a friction wheel 25 which can be driven by a motor 30 and a friction wheel 25 against the second friction wheel 25, e.g. by means of springs pressable friction wheel 25 so that the lance 7 or the reamer 29 is held and moved securely by the two pairs of friction wheels 26, 27.
  • the motors 30 used to drive the friction wheels are arranged towards the center of the housing 21 in such a way that the housing 21 is as weight-balanced as possible.
  • brake shoes 31 which serve to secure the lance 7 or the scraper 29 when the plant is at a standstill. All drives for moving or pivoting the housing 21 or motors for driving the friction wheels or the brakes can be started electromechanically or with a pressure medium.
  • three friction wheels 25 ' can also be provided instead of the two friction wheel pairs described above.
  • the drive can also be realized by means of a toothed wheel which engages in a toothed rack arranged on one side of the lance 7.
  • slag scrapers 32 which clean the sides 33 of the lance 7 or the reamer 29 which come into contact with the friction wheels 25 at least to such an extent that a perfect frictional engagement with the friction wheels 25 without impairing the movement of the lance 7 or the reamer 29 is secured.
  • the lance 7 itself is formed by a hollow square, polygonal or round steel tube. At the tip of the lance there are not shown holding mandrels for the measuring 5 or sampling probes 6, the number of mandrels depending on the desired operating mode, so that several measurements can be carried out or samples can be taken simultaneously.
  • a protective tube 34 for measuring cable 35 is provided in the center of the lance 7. Both the protective tube 34 and the lance 7 itself can be flushed with purge gas, for example with nitrogen, for which the gas supply lines 36, 37 provided at the upper end of the lance 7 are used. By flushing the protective tube 34, the contacts between the measuring cables 35 and the probe can be kept clean.
  • the lance 7 itself is only flushed with a larger amount of gas during the entry into the converter 1 in order to cool it.
  • the displacement and pivoting possibilities of the housing 21 permit a precise adaptation of the axis 24 of the lance 7 to the axis 38 of the passage opening 4, so that the insertion and extension of the lance 7 or the scraper 29 can proceed without problems.
  • This is particularly important if the metallurgical vessel 1 can be tilted as in the exemplary embodiment shown.
  • the tilting drive provided for the tilting and equipped with gear wheels, the position of a metallurgical vessel 1 intended for carrying out the measurement cannot be precisely determined. Tooth flank play and gear wear are responsible for this.
  • the facility also allows that within a certain range any point can be approached with the tip of the lance or with the tip of the reamer 29.
  • the device according to the invention can also be used to approach different passage openings 4 on a metallurgical vessel 1 with one and the same lance 7, or for measurements with one and the same lance 7 to perform several metallurgical vessels 1 arranged next to one another.
  • the device according to the invention are the light and compact construction due to the omission of a separate lance guide extending over the length of the lance.
  • the device according to the invention offers a high level of operational safety since no rope break or slack rope and no chain break are possible.
  • a lance adjustment can be accomplished in a very short time, since only short adjustment distances have to be covered and only small masses have to be moved in comparison to the prior art.
  • the device according to the invention operates as follows:
  • the lance 7 can be brought into a ready position, a changing position and a measuring position.
  • the ready position is the starting position for moving to the change and measurement positions.
  • the probe 5, 6 is changed either automatically or manually.
  • the three positions can be accessed from a control panel at the push of a button.
  • a button for starting the measurement is provided on the control panel. If this key is actuated, the scraper 29 is first lowered into the passage opening 4 in order to clean it of slag residues. The reamer 29 is then moved back into its starting position and the support plate 14 is moved until the lance 7 can be lowered through the passage opening 4 into the converter. To When the measurement is carried out, the lance 7 returns to the ready position.
  • FIG. 4 shows a device as shown in FIGS. 1 and 2, but this device is provided with additional devices which enable the lance 7 to be automatically adjusted in relation to the passage opening 4 of the converter 1.
  • the converter 1 is equipped with a position sensor 39, which enables the tilt position of the converter 1 to be determined precisely, etc. independent of backlash of the converter drive.
  • the position sensor 39 is e.g. firmly mounted on the support pin 40 of the converter 1.
  • the value of the position transmitter is entered into a computer 41. With this position transmitter 39, which is designed as an angle pickup, the position of the axis 38 of the passage opening 4 passing through the wall 3 of the converter 1 can thus also be determined.
  • FIG. 4 shows schematically and to a greatly exaggerated degree a deviation of the actual position A of the converter from the vertical target position B, which deviation is caused, for example, by a backlash of the converter drive.
  • 4 position transducers 42, 43, 44 which determine the position of the lance 7, are provided, etc.
  • a displacement sensor 42 which determines the position of the support plate 14
  • an angle sensor 43 which determines the angular position of the base plate 17 with respect to the support plate 14
  • a further angle sensor 44 which determines the angular position of the housing 21 with respect to the base plate 17, are provided.
  • These position sensors 42, 43, 44 are expediently arranged on the drive devices 15, 18 and 23, which serve to position the lance 7.
  • the values determined by these position sensors 42, 43, 44 are also fed to the computer 41.
  • This computer determines the target values that the position sensors 42, 43, 44 must display so that the position of the lance 7 relative to the position of the passage opening 4 is optimally set, etc. on the basis of the value determined by the position transmitter 39, which takes up the actual position A of the converter 1.
  • the computer 41 outputs the determined target values that the position sensors must display for as long as Control commands for the drive devices 15, 18 and 23 until these target values are reached. The introduction of the measuring or sampling lance 7 into the passage opening 4 can then be started.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
EP91890014A 1990-02-02 1991-01-28 Einrichtung zum Ein- und Ausbringen einer Lanze in ein und aus einem metallurgischen Gefäss Expired - Lifetime EP0444006B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT91890014T ATE101877T1 (de) 1990-02-02 1991-01-28 Einrichtung zum ein- und ausbringen einer lanze in ein und aus einem metallurgischen gefaess.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4003068 1990-02-02
DE4003068A DE4003068C1 (enrdf_load_stackoverflow) 1990-02-02 1990-02-02

Publications (2)

Publication Number Publication Date
EP0444006A1 EP0444006A1 (de) 1991-08-28
EP0444006B1 true EP0444006B1 (de) 1994-02-23

Family

ID=6399273

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91890014A Expired - Lifetime EP0444006B1 (de) 1990-02-02 1991-01-28 Einrichtung zum Ein- und Ausbringen einer Lanze in ein und aus einem metallurgischen Gefäss

Country Status (9)

Country Link
US (1) US5200136A (enrdf_load_stackoverflow)
EP (1) EP0444006B1 (enrdf_load_stackoverflow)
JP (1) JPH0742493B2 (enrdf_load_stackoverflow)
CN (1) CN1022575C (enrdf_load_stackoverflow)
AT (1) ATE101877T1 (enrdf_load_stackoverflow)
CA (1) CA2035127A1 (enrdf_load_stackoverflow)
DE (2) DE4003068C1 (enrdf_load_stackoverflow)
RU (1) RU1836439C (enrdf_load_stackoverflow)
TR (1) TR26915A (enrdf_load_stackoverflow)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU88056A1 (de) * 1992-01-24 1993-08-17 Paul Wurth S.A. Vorrichtung zur medienversorgung einer blaslanze
FI925647A7 (fi) * 1992-12-11 1994-06-12 Outokumpu Chrome Oy Kaasuputken syöttölaite sulaa materiaalia sisältävään uuniin
DE59608799D1 (de) * 1995-05-30 2002-04-04 Clyde Bergemann Gmbh Antriebssystem für wasserlanzenbläser mit gehäuse für sperr- und spülmedium und verfahren zum betrieb
NL1003186C2 (nl) * 1996-05-23 1997-11-25 Hoogovens Staal Bv Drukvat, toepassing van dat drukvat bij de bereiding van ruw ijzer, alsmede leiding geschikt voor toepassing in dat drukvat.
US8001853B2 (en) * 2002-09-30 2011-08-23 Her Majesty The Queen In Right Of Canada, As Represented By The Minister Of Natural Resources Conditioning chamber for metallurgical surface science
US20040063212A1 (en) * 2002-09-30 2004-04-01 Allen Pratt Conditioning chamber for metallurgical surface science
WO2006010210A1 (en) * 2004-07-27 2006-02-02 Technological Resources Pty Limited Apparatus for injecting solid particulate material into a vessel
TWI373529B (en) * 2004-07-27 2012-10-01 Tech Resources Pty Ltd Smelting apparatus
US8114337B2 (en) * 2005-03-02 2012-02-14 Technological Resources Pty. Limited Lance extraction
KR100758419B1 (ko) 2006-06-08 2007-09-14 주식회사 포스코 진공 탈가스 베셀의 예열구 지금 파쇄장치
CN101245401B (zh) * 2007-02-15 2010-07-28 中冶赛迪工程技术股份有限公司 一种转炉副枪探头夹持器装置
CN101307989B (zh) * 2008-06-26 2010-06-02 缪建通 水泥窑机械操作臂装置
JP6474746B2 (ja) * 2016-01-29 2019-02-27 日立建機株式会社 気体吹精機

Citations (1)

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Publication number Priority date Publication date Assignee Title
US4747582A (en) * 1984-10-10 1988-05-31 Bergstroem Sven E Manipulator at furnaces

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JPS5625778Y2 (enrdf_load_stackoverflow) * 1974-07-30 1981-06-18
JPS5237605U (enrdf_load_stackoverflow) * 1975-09-10 1977-03-17
DE2738291A1 (de) * 1977-08-25 1979-03-08 Krupp Gmbh Einrichtung zum zufuehren von stoffen mittels einer oder mehrerer lanzen in elektrooefen
US4226407A (en) * 1979-03-26 1980-10-07 Bethlehem Steel Corporation Metallurgical lance deskuller
JPS5796955U (enrdf_load_stackoverflow) * 1980-12-03 1982-06-15
FR2516095A1 (fr) * 1981-11-10 1983-05-13 Fives Cail Babcock Installation d'affinage equipee d'un dispositif de mesure de la temperature et/ou de prelevement d'echantillons d'un bain d'acier liquide
JPS6119440U (ja) * 1984-07-11 1986-02-04 中島造機株式会社 精穀機の加圧蓋装置
US4637592A (en) * 1984-08-23 1987-01-20 Insul Company, Inc. Elevated swinging device for placing slag retention devices in tapping converters
JPS61108350U (enrdf_load_stackoverflow) * 1984-12-17 1986-07-09
JPS63176413A (ja) * 1987-01-16 1988-07-20 Daido Steel Co Ltd 溶鋼測温用熱電対プロ−ブ
NL8700371A (nl) * 1987-02-16 1988-09-16 Hoogovens Groep Bv Sub-lansinrichting voor het doen van metingen en/of het nemen van monsters in een metallurgische oven.
LU87385A1 (de) * 1988-11-16 1989-11-14 Wurth Paul Sa Automatische lanzenwechselvorrichtung

Patent Citations (1)

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US4747582A (en) * 1984-10-10 1988-05-31 Bergstroem Sven E Manipulator at furnaces

Also Published As

Publication number Publication date
DE59101037D1 (de) 1994-04-07
TR26915A (tr) 1994-08-22
RU1836439C (ru) 1993-08-23
JPH04214815A (ja) 1992-08-05
CN1053816A (zh) 1991-08-14
JPH0742493B2 (ja) 1995-05-10
CA2035127A1 (en) 1991-08-03
US5200136A (en) 1993-04-06
ATE101877T1 (de) 1994-03-15
DE4003068C1 (enrdf_load_stackoverflow) 1991-07-25
EP0444006A1 (de) 1991-08-28
CN1022575C (zh) 1993-10-27

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