EP0444006B1 - An arrangement for installing and removing a lance into and from a metallurgical vessel and a method therefor - Google Patents

An arrangement for installing and removing a lance into and from a metallurgical vessel and a method therefor 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
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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
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EP91890014A
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German (de)
French (fr)
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EP0444006A1 (en
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
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Voest Alpine Industrienlagenbau GmbH
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Priority to AT91890014T priority Critical patent/ATE101877T1/en
Publication of EP0444006A1 publication Critical patent/EP0444006A1/en
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    • 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.

Abstract

Lances have hitherto been inserted into the metallurgical vessel by means of a lance carriage which can be moved along rails arranged next to the metallurgical vessel. Such arrangements are complex in construction and not sufficiently operationally reliable. The new arrangement is intended to take up little space and have a high degree of operational reliability. <??>The lance (7) is itself designed as a guide and is guided by means of a drive (26, 27, 30) fixed in the direction of the axis (24) of the lance (7) and can be moved in the direction of its axis (24). <??>The drive (26, 27, 30) is mounted in such a way that it can be swivelled about two intersecting axes (16,22). <IMAGE>

Description

Die Erfindung betrifft eine Einrichtung zum Ein- und Ausbringen einer Lanze, insbesondere einer Meß- und/oder Probenahmelanze, in ein und aus einem kippbaren metallurgischen Gefäß, insbesondere einem Stahlwerkskonverter, wobei die Lanze mittels eines in Richtung der Achse der Lanze angeordneten Antriebes geführt und in Richtung ihrer Achse bewegbar ist, und wobei der Antrieb um zwei einander kreuzende Achsen schwenkbar gelagert sowie in Richtung senkrecht zur Achse der Lanze in etwa horizontaler Richtung verschiebbar ist.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.

Einrichtungen zum Ein- und Ausbringen einer Lanze sind aus der DE-C- 27 38 291 und der EP-A - 0 079 290 bekannt. Bei diesen bekannten Einrichtungen ist die Lanze durch eine eigens für diesen Zweck vorgesehene Öffnung in der Wand des metallurgischen Gefäßes in dieses einschiebbar, wobei die Lanze mit ihrem oberen Ende an einem Lanzenträgerwagen montiert ist, der entlang neben dem Konverter angeordneter und in der Länge der Lanzenlänge entsprechenden Schienen verfahrbar ist.Devices for inserting and removing a lance are known from DE-C-27 38 291 and EP-A - 0 079 290. In these known devices, 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.

Zwecks fluchtender Anpassung der Lanze an die Öffnung in der Seitenwand des metallurgischen Gefäßes ist die Führung für den Lanzenträgerwagen gegenüber dem metallurgischen Gefäß verschiebbar bzw. neigbar. Hierfür sind aufwendige Einrichtungen notwendig, da die Führung für den Lanzenträgerwagen infolge ihrer großen Lange schwer ist und zur Vermeidung von Schwingungen der Lanze entsprechend stabil gebaut sein muß. Die Führung für den Lanzenträgerwagen und deren Abstützung am Tragwerk der Stahlwerkshalle benötigt seitlich des Konverters relativ viel Platz, so daß andere Manipulationen, wie z.B. das Aufstecken und Abnehmen einer Sonde auf die bzw. von der Lanze, nur mehr schwierig durchzuführen ist.For the purpose of aligning the lance to the opening in the side wall of the metallurgical vessel, the guide for the lance carrier carriage can be displaced or inclined relative to the metallurgical vessel. For this purpose, 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.

Die Bewegung der bekannten Lanzenträgerwagen entlang ihrer Führungen erfolgt mittels Seilwinden oder Kettenzüge. Hierbei ist die Gefahr eines Seil- bzw. Kettenrisses gegeben, wobei es zu Beschädigungen der Lanze und des metallurgischen Gefäßes kommt.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.

Eine Einrichtung zum Ein- und Ausbringen einer Lanze ist weiters aus der US-A - 4,637,592 bekannt. Bei dieser Einrichtung ist eine Vorrichtung zum Zurückhalten von Schlacke in einen Konverter einschwenkbar und in ein Abstichloch von der Konverterinnenseite her einsetzbar. Die Vorrichtung ist am Ende einer Lanze befestigt, und die Lanze ist in einer mit einem Antrieb versehenen Hülse verschiebbar eingesetzt. Die Hülse ist wiederum an einem ortsfesten Stützgerüst schwenkbar befestigt.A device for inserting and removing a lance is also known from US-A-4,637,592. In this device, 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.

Bei dieser bekannten Einrichtung kann es zu Schwierigkeiten kommen, sofern die Abstichöffnung des mettallurgischen Gefäßes nach einem Kippen des Gefäßes nicht stets ein- und dieselbe Lage einnimmt, wie es z.B. infolge eines Zahnflankenspieles oder nach einer gewissen Abnützung eines das metallurgische Gefäß kippenden, mit Zahnrädern bestückten Kippantriebes der Fall ist.In this known device, difficulties can arise if the tap opening of the metallurgical vessel does not always assume the same position after tilting the vessel, as is the case e.g. due to backlash or after a certain wear of a tilting drive that tilts the metallurgical vessel and is equipped with gearwheels.

Eine Einrichtung der eingangs beschriebenen Art ist aus der US-A - 4,747,582 bekannt. Bei dieser Einrichtung ist die Lanze an einer Führung starr befestigt, und diese Führung ist mittels eines Druckmittelzylinders in Achsrichtung der Lanze bewegbar. An der Führung der Lanze greifen weitere Druckmittelzylinder an, mit deren Hilfe die Führung der Lanze um zwei einander kreuzende Achsen schwenkbar ist. Zusätzlich hierzu ist die Führung der Lanze in horizontaler Richtung etwa senkrecht zur Längsrichtung der Führung der Lanze und damit etwa senkrecht zur Lanzenlängsachse verschiebbar. Mit Hilfe dieser Einrichtung gelingt es, die Lanze in verschiedene Positionen im Inneren des metallurgischen Gefäßes zu führen.A device of the type described in the opening paragraph is known from US-A-4,747,582. In this device, 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. In addition to this, 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.

Die Erfindung bezweckt die Vermeidung dieser Nachteile und Schwierigkeiten und stellt sich die Aufgabe, eine Einrichtung der eingangs beschriebenen Art derart auszubilden, daß sie nur wenig Platz benötigt und eine große Betriebssicherheit aufweist. Die Einrichtung soll trotz einfacher Bauweise besonders stabil sein. Insbesondere soll die Einrichtung eine genaue Einstellung der Lanzenlage gegenüber dem metallurgischen Gefäß mit konstruktiv einfachen und kostengünstigen Mitteln auch dann ermöglichen, wenn das metallurgische Gefäß nach einem Kippvorgang nicht stets ein- und dieselbe Lage einnimmt.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. Despite its simple construction, the device should be particularly stable. In particular, 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.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß an einem ortsfesten Stützgerüst horizontal verlaufende Schienen angeordnet sind, entlang der eine Tragplatte verschiebbar geführt ist, an welche Tragplatte eine Basisplatte um eine Achse senkrecht zur Tragplatte verschwenkbar gelagert ist und an welcher Basisplatte mindestens ein einen in Richtung der Achse der Lanze ortsfesten Antrieb für die als Führung ausgebildete Lanze aufweisendes Gehäuse um eine parallel zu den Führungsschienen gerichtete Achse schwenkbar gelagert ist, wobei eine Schiebeeinrichtung zum Bewegen der Tragplatte gegenüber dem ortsfesten Stützgerüst, eine Verschwenkeinrichtung zum Verschwenken der Basisplatte gegenüber der Tragplatte und eine weitere Schwenkeinrichtung zum Schwenken des Gehäuses gegenüber der Basisplatte vorgesehen sind.This object is achieved in that 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.

Vorzugsweise ist im Gehäuse neben dem Antrieb für die Lanze ein weiterer Antrieb für eine weitere in das metallurgische Gefäß einführbare Einrichtung, wie ein Räumer, vorgesehen.In addition to the drive for the lance, 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.

Gemäß einer bevorzugten Ausführungsform ist der Antrieb als Reibradantrieb ausgebildet. Hierdurch wird eine problemlose Bewegung der Lanze in Achsrichtung sichergestellt, u.zw. auch dann, wenn die Lanze verschmutzt ist. Kommt es trotzdem zu einer beispielsweise durch einen Schlackenansatz hervorgerufenen Störung, wird der eine Art Sicherheitsrutschkupplung darstellende Reibradantrieb nicht in Mitleidenschaft gezogen, und die Lanze kann nach Ausschaltung des Reibschlusses der Antriebsräder aus dem metallurgischen Gefäß gezogen werden, z.B. mittels eines Kranes. Nach einer Reinigung der Lanze ist die Einrichtung sofort wieder einsatzbereit.According to a preferred embodiment, 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.

Zur Sicherung des einwandfreien Betriebes der Lanze im rauhen Stahlwerksbetrieb weist zweckmäßig das Gehäuse an seiner dem metallurgischen Gefäß zugewendeten Durchtrittsöffnung für die Lanze oder im Falle des Vorhandenseins einer weiteren Einrichtung für diese Einrichtung eine Abstreifeinrichtung zum Reinigen der Lanze oder der weiteren Einrichtung auf.In order to ensure the correct operation of the lance in rough steelworks operation, 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.

Um ein Abstürzen der Lanze bei Versagen des Antriebes zu vermeiden, ist vorteilhaft in dem Gehäuse eine Bremseinrichtung zum Bremsen und Fixieren der Lanze oder im Falle des Vorhandenseins einer weiteren Einrichtung zum Bremsen und Fixieren der weiteren Einrichtung gegenüber dem Gehäuse vorgesehen.In order to prevent the lance from falling if the drive fails, 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.

Vorteilhaft ist die Lanze hohl ausgebildet und der Hohlraum der Lanze an eine Gas-Zuführungsleitung angeschlossen.The lance is advantageously hollow and the lance cavity is connected to a gas supply line.

Gemäß einer bevorzugten Ausführungsform ist weiten im Inneren der hohlen Lanze ein Schutzrohr für im Inneren der Lanze angeordnete Meßkabel vorgesehen, wobei zweckmäßig das Schutzrohr an eine Gas-Zuführungsleitung angeschlossen ist.According to a preferred embodiment, 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.

Eine bevorzugte Bauform ist dadurch gekennzeichnet, daB der Reibradantrieb von zwei Paaren Reibrädern gebildet ist, wobei jeweils ein Reibradpaar die Lanze an zwei einander gegenüberliegenden Seiten stützt und mindestens ein Reibrad eines Reibradpaares antreibbar und dieses Reibrad und/oder das gegenüberliegende Reibrad dieses Reibradpaares gegen die Lanze preßbar ist.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.

Vorteilhaft ist der Reibradantrieb von mindestens drei Reibrädern gebildet, von denen mindestens eines antreibbar und mindestens eines gegen die Lanze preßbar ist.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.

Ein Verfahren zum Positionieren einer Lanze gegenüber einer Öffnung eines kippbaren metallurgischen Gefäßes, insbesondere eines Stahlwerkskonverters, unter Verwendung der erfindungsgemäßen Einrichtung ist dadurch gekennzeichnet, daß eine Ist-Position des metallurgischen Gefäßes mittels eines am Gefäß angeordneten Positionsgebers aufgenommen wird und Einrichtungen zur Positionierung der Lanze in Abhängigkeit der aufgenommenen Ist-Position betätigt werden.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.

Zweckmäßig wird die Position der Lanze durch Positionsaufnehmer bestimmt, u.zw. einem Wegaufnehmer, der die Position der Tragplatte bestimmt, einen Winkelaufnehmer, der die Winkellage der Basisplatte gegenüber der Tragplatte bestimmt, einen Winkelaufnehmer, der die Winkelposition des Gehäuses gegenüber der Basisplatte bestimmt, und werden die Werte des Positionsnehmers des metallurgischen Gefäßes einem Rechner zugeleitet und dieser steuert die Einrichtungen zur Positionierung der Lanze, u.zw. die Schiebeeinrichtung, die Verschwenkeinrichtung und die Schwenkeinrichtung an, u.zw. solange, bis die Positionsaufnehmer, die der Lanze zugeordnet sind eine Übereinstimmung der Lage der Lanze und der Lage der Öffnung des metallurgischen Gefäßes ergeben.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.

Die Erfindung ist nachfolgend anhand der Zeichnung an einem Ausführungsbeispiel näher erläutert, wobei Fig. 1 eine Seitenansicht der erfindungsgemäßen Einrichtung mit in zurückgezogener Position dargestellter Lanze und Fig. 2 eine teilweise geschnittene Ansicht in Richtung des Pfeiles 11 der Fig. 1 zeigen. Fig. 3 veranschaulicht in schematischer Darstellung eine Variante des Lanzenantriebes. Fig. 4 veranschaulicht in Schemadarstellung ein Verfahren zur Positionierung einer Lanze.The invention is explained in more detail below with reference to the drawing using an exemplary embodiment, wherein 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.

In der Zeichnung ist ein Stahlwerkskonverter 1 im Schnitt dargestellt, wobei die Schnittebene durch die Längsachse des Konverters und seine Kippachse geführt ist. Die Mündung des Konverters ist mit 2 bezeichnet. Sie kann beim Kippen des Konverters 1 entlang eines Kreisbogens, der senkrecht zur Zeichen- bzw. Schnittebene steht, bewegt werden.In the drawing, 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. When the converter 1 is tilted, it can be moved along an arc that is perpendicular to the plane of the drawing or section.

In der Wand 3 des Konverters 1 ist in der Nähe der Mündung 2 eine Durchtrittsöffnung 4 zum Einbringen einer mit einer Meß- 5 und/oder Probenahmesonde 6 bestückten Lanze 7 vorgesehen. Die Lanze 7 kann auch als Zuführeinrichtung zum Chargieren von Zuschlagstoffen ausgebildet sein. Zum Ein- und Ausbringen der Lanze 7 dient eine an einem ortsfesten Stützgerüst, z.B. dem Hallengerüst 8, angeordnete Einrichtung 9, die wie folgt ausgebildet ist:In the wall 3 of the converter 1, 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. To insert and remove the lance 7, one is used on a stationary support frame, e.g. the hall scaffold 8, arranged device 9, which is designed as follows:

An dem Stützgerüst 8 sind ortsfest etwa horizontal verlaufende Schienen 10 angeordnet, die beim dargestellten Ausführungsbeispiel als schwalbenschwanzförmige Nuten ausgebildet sind. Diese Nuten 10 sind in einer Stützplatte 11 angeordnet, die am Hallengerüst über eine Unterkonstruktion 12 befestigt ist. Entlang der Nuten 10 ist eine an der Rückseite mit schwalbenschwanzförmigen Führungsleisten 13 versehene Tragplatte 14 verschiebbar, wobei die Führungsleisten 13 in die Nuten 10 ragen. Zum Verschieben dient ein einerseits an der Tragplatte 14 und andererseits an der Unterkonstruktion 12 gelagerter Druckmittelzylinder 15.Arranged in a stationary manner on the support frame 8 are approximately horizontally extending rails 10 which, in the exemplary embodiment shown, are designed as dovetail-shaped grooves. These grooves 10 are arranged in a support plate 11 which is fastened to the hall scaffold by means of a substructure 12. A support plate 14, which is provided on the rear with dovetail-shaped guide strips 13, can be displaced along the grooves 10, the guide strips 13 projecting into the grooves 10. A pressure medium cylinder 15 mounted on the one hand on the support plate 14 and on the other hand on the substructure 12 serves for displacement.

An der Tragplatte 14 ist zentral ein senkrecht zu ihr ausgerichteter Schwenkzapfen 16 angeordnet. An diesem Schwenkzapfen 16 ist eine parallel zur Tragplatte 14 angeordnete Basisplatte 17 schwenkbar gelagert. Als Schwenkantrieb ist ein Druckmittelzylinder 18 vorgesehen, der einerseits an einem Fortsatz 19 der Basisplatte 17 und andererseits an der Tragplatte 14 angelenkt ist. Die Basisplatte 17 ist mit zwei im Abstand voneinander und parallel zueinander angeordneten Lagerböcken 20 ausgestattet, die sich etwa senkrecht zur Basisplatte 17 nach vorne erstrecken. Zwischen diesen Lagerböcken 20 ist ein Gehäuse 21 eingesetzt und über Schwenkzapfen 22 an den Lagerböcken 20 schwenkbar gelagert. Auch hier ist als Schwenkantrieb für das Gehäuse 21 ein Druckmittelzylinder 23 vorgesehen, der einerseits an der Basisplatte 17 und andererseits an dem Gehäuse 21 angelenkt ist. Die Achse der Schwenkzapfen 22 und die Achse des Schwenkzapfens 16 müssen einander nicht schneiden; sie können sich auch im Abstand voneinander kreuzen, also windschief zueinander stehen.A pivot pin 16 oriented perpendicular to it is arranged centrally on the support plate 14. A base plate 17, which is arranged parallel to the support plate 14, is pivotably mounted on this pivot pin 16. 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. Here too, 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.

Das Gehäuse 21 ist gemäß dem dargestellten Ausführungsbeispiel zweigeteilt ausgebildet, wobei sich in jedem Teil des Gehäuses 21 zwei in Richtung der Längsachse 24 der Lanze 7 im Abstand voneinander angeordnete, von Reibrädern 25 gebildete Radpaare 26, 27 befinden. Die Reibräder 25 sind mit seitlichen Führungswulsten 28 ausgestaltet. Die Reibräder 25 eines ersten Teiles des Gehäuses 21 stehen mit einer Lanze 7 im Reibschluß, die im anderen Teil des Gehäuses 21 vorgesehenen Reibräder 25 stehen mit einem Räumer 29 im Reibschluß, der zum Reinigen der Durchtrittsöffnung 4 des Konverters 1 vor Durchführung einer Probenahme bzw. einer Messung dient, so daß die an der Lanze 7 vorgesehenen Probenahme- 6 bzw. Meßsonden 5 keine Beschädigung beim Einführen in den Konverter 1 erfahren können.According to the exemplary embodiment shown, 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.

Jedes Reibradpaar 26, 27 weist ein mittels eines Motors 30 antreibbares Reibrad 25 sowie ein gegen das zweite Reibrad 25 z.B. mittels Federn preßbares Reibrad 25 auf, so daß die Lanze 7 bzw. der Räumer 29 jeweils von den beiden Reibradpaaren 26, 27 sicher gehalten und bewegt wird.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.

Wie aus Fig. 1 ersichtlich ist, sind die zum Antrieb der Reibräder dienenden Motoren 30 so zum Zentrum des Gehäuses 21 angeordnet, daß das Gehäuse 21 möglichst gewichtsausgeglichen ist. Im Inneren des Gehäuses 21 befinden sich Bremsbacken 31, die zur Sicherung der Lanze 7 bzw. des Räumers 29 bei Betriebsstillstand dienen. Sämtliche Antriebe zum Verschieben bzw. Verschwenken des Gehäuses 21 bzw. Motoren für den Antrieb der Reibräder bzw. die Bremsen können elektromechanisch oder auch mit einem Druckmedium in Betrieb gesetzt werden.As can be seen from FIG. 1, 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. In the interior of the housing 21 there are 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.

Wie aus Fig. 3 ersichtlich ist, können anstelle der beiden oben beschriebenen Reibradpaare auch drei Reibräder 25' vorgesehen sein. Der Antrieb läßt sich jedoch auch mittels eines Zahnrades realisieren, das in eine an einer Seite der Lanze 7 angeordnete Zahnstange eingreift.As can be seen from FIG. 3, three friction wheels 25 'can also be provided instead of the two friction wheel pairs described above. However, 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.

An der unteren Stirnseite des Gehäuses 21 befinden sich Schlackenabstreifvorrichtungen 32, die die mit den Reibrädern 25 in Kontakt gelangenden Seiten 33 der Lanze 7 bzw. des Räumers 29 zumindest so weit reinigen, daß ein einwandfreier Reibschluß mit den Reibrädern 25 ohne Bewegungsbeeinträchtigung der Lanze 7 bzw. des Räumers 29 gesichert ist.On the lower end of the housing 21 there are 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.

Die Lanze 7 selbst ist von einem hohlen Vierkant-, Mehrkant- oder Rundstahlrohr gebildet. An der Lanzenspitze sind nicht näher dargestellte Aufnahmedorne für die Meß- 5 bzw. Probenahmesonden 6 vorgesehen, wobei sich die Anzahl der Dorne nach der gewünschten Betriebsart richtet, so daß auch gleichzeitig mehrere Messungen durchgeführt bzw. Proben entnommen werden können.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.

Im Zentrum der Lanze 7 ist ein Schutzrohr 34 für Meßkabel 35 vorgesehen. Sowohl das Schutzrohr 34 als auch die Lanze 7 selbst können mit Spülgas gespült werden, beispielsweise mit Stickstoff, wofür die am oberen Ende der Lanze 7 vorgesehenen Gaszuführungsleitungen 36, 37 dienen. Durch die Spülung des Schutzrohres 34 können die Kontakte zwischen den Meßkabeln 35 und der Sonde sauber gehalten werden. Die Lanze 7 selbst wird nur während des Einfahrens in den Konverter 1 mit einer größeren Gasmenge gespült, um sie zu kühlen.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.

Die Verschiebe- und Schwenkmöglichkeiten des Gehäuses 21 gestatten eine genaue Anpassung der Achse 24 der Lanze 7 an die Achse 38 der Durchtrittsöffnung 4, so daß das Ein- und Ausfahren der Lanze 7 bzw. des Räumers 29 problemlos vor sich gehen kann. Dies ist insbesondere dann von Bedeutung, wenn das metallurgische Gefäß 1 so wie beim dargestellten Ausführungsbeispiel kippbar ist. Infolge des für das Kippen vorgesehenen, mit Zahnrädern bestückten Kippantriebes läßt sich nämlich die für die Durchführung der Messung bestimmte Position eines metallurgischen Gefäßes 1 nicht genau festlegen. Hierfür sind Zahnflankenspiele und auch eine Zahnradabnützung verantwortlich. Die Einrichtung gestattet zudem, daß innerhalb eines gewissen Bereiches jeder beliebige Punkt mit der Lanzenspitze bzw. mit der Spitze des Räumers 29 angefahren werden kann.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. As a result of 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.

Zusätzlich zur genauen Anpassung der Lanzenachse 24 an die Achse 38 der Durchtrittsöffnung 4 kann die erfindungsgemäße Einrichtung auch dazu herangezogen werden, mit ein- und derselben Lanze 7 unterschiedliche Durchtrittsöffnungen 4 an einem metallurgischen Gefäß 1 anzufahren bzw. mit ein- und derselben Lanze 7 Messungen an mehreren nebeneinander angeordneten metallurgischen Gefäßen 1 durchzuführen.In addition to the exact adaptation of the lance axis 24 to the axis 38 of the passage opening 4, 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.

Als Vorteile der erfindungsgemäßen Einrichtung sind die leichte und kompakte Konstruktion infolge des Wegfalles einer eigenen, sich über die Länge der Lanze erstreckenden Lanzenführung hervorzuheben. Die erfindungsgemäße Einrichtung bietet eine hohe Betriebssicherheit, da kein Seilriß oder Schlaffseil und auch kein Kettenriß möglich sind. Zudem läßt sich eine Lanzeneinstellung in sehr kurzer Zeit bewerkstelligen, da nur kurze Einstellwege zurückzulegen sind und dabei nur geringe Massen - im Vergleich zum Stand der Technik - bewegt werden müssen.Advantages of 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. In addition, 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.

Der Betrieb der erfindungsgemäßen Einrichtung erfolgt wie folgt:The device according to the invention operates as follows:

Die Lanze 7 ist in eine Bereitposition, eine Wechselposition sowie in eine Meßposition bringbar. Die Bereitposition ist die Ausgangsposition zum Anfahren der Wechsel- und der Meßposition. In der Wechselposition wird die Sonde 5, 6 entweder automatisch oder manuell gewechselt. Die drei Positionen können jeweils durch Knopfdruck von einem Bedienungspult aus angefahren werden.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. In the change position, 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.

An dem Bedienungspult ist eine Taste zum Start der Messung vorgesehen. Wird diese Taste betätigt, wird zunächst der Räumer 29 in die Durchtrittsöffnung 4 gesenkt, um diese von Schlackenresten zu säubern. Anschließend wird der Räumer 29 in seine Ausgangsposition zurückbewegt und die Tragplatte 14 verfahren, bis die Lanze 7 durch die Durchtrittsöffnung 4 in den Konverter gesenkt werden kann. Nach Durchführung der Messung erfolgt die Rückkehr der Lanze 7 in die Bereitposition.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.

In Fig. 4 ist eine Einrichtung, wie sie in den Fig. 1 und 2 gezeigt ist, dargestellt, wobei diese Einrichtung jedoch mit Zusatzeinrichtungen versehen ist, die eine selbsttätige automatische Anpassung der Lage der Lanze 7 gegenüber der Durchtrittsöffnung 4 des Konverters 1 ermöglichen. Zu diesem Zweck ist der Konverter 1 mit einem Positionsgeber 39 ausgestattet, der die genaue Bestimmung der Kipplage des Konverters 1 ermöglicht, u.zw. unabhängig von einem Zahnflankenspiel des Konverterantriebs. Der Positionsgeber 39 ist z.B. fest am Tragzapfen 40 des Konverters 1 montiert. Der Wert des Positionsgebers wird einem Rechner 41 eingegeben. Mit diesem Positionsgeber 39, der als Winkelaufnehmer ausgebildet ist, ist somit auch die Lage der Achse 38 der die Wand 3 des Konverters 1 durchsetzenden Durchtrittsöffnung 4 ermittelbar.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. For this purpose, 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.

In Fig. 4 ist schematisch und im stark übertriebenen Maß eine Abweichung der Ist-Position A des Konverters von der vertikalen Soll-Position B veranschaulicht, welche Abweichung z.B. durch ein Zahnflankenspiel des Konverterantriebes bedingt ist. Weiters sind gemäß Fig. 4 Positionsaufnehmer 42, 43, 44, die die Position der Lanze 7 bestimmen, vorgesehen, u.zw. ist ein Wegaufnehmer 42, der die Position der Tragplatte 14 bestimmt, ein Winkelaufnehmer 43, der die Winkellage der Basisplatte 17 gegenüber der Tragplatte 14 bestimmt und ein weiterer Winkelaufnehmer 44, der die Winkelposition des Gehäuses 21 gegenüber der Basisplatte 17 bestimmt, vorgesehen. Diese Positionsaufnehmer 42, 43, 44 sind zweckmäßigerweise an den Antriebseinrichtungen 15, 18 und 23, die zur Positionierung der Lanze 7 dienen, angeordnet. Die von diesen Positionsaufnehmern 42, 43, 44 festgestellten Werte werden ebenfalls dem Rechner 41 zugeführt. Dieser Rechner ermittelt jene Soll-Werte, die die Positionsaufnehmer 42, 43, 44 anzeigen müssen, damit die Position der Lanze 7 zur Lage der Durchtrittsöffnung 4 optimal eingestellt ist, u.zw. aufgrund des vom Positionsgeber 39 ermittelten Wertes, der die Ist-Position A des Konverters 1 aufnimmt. Der Rechner 41 gibt anhand der ermittelten Soll-Werte, die die Positionsaufnehmer anzeigen müssen solange Steuerbefehle für die Antriebseinrichtungen 15, 18 und 23 aus, bis diese Soll-Werte erreicht sind. Anschließend kann mit der Einführung der Meß- bzw. Probenahmelanze 7 in die Durchtrittsöffnung 4 begonnen werden. Sollte es aufgrund der geometrischen Zusammenhänge nicht möglich sein, die Achse 38 der Durchtrittsöffnung 4 mit der Achse 24 der Lanze 7 zur Deckung zu bringen, genügt es, wenn mittels des Rechners die Achse 24 der Lanze 7 auf den Mittelpunkt 45 des Eintrittsquerschnittes der Durchtrittsöffnung 4 ausgerichtet wird.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, and 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. If it is not possible due to the geometric interrelationships to align the axis 38 of the passage opening 4 with the axis 24 of the lance 7, it is sufficient if the axis 24 of the lance 7 points to the center 45 of the entry cross section of the passage opening 4 by means of the computer is aligned.

Claims (12)

  1. An arrangement for installing and removing a lance (7), in particular a measuring and/or sampling lance, into and from a tiltable metallurgical vessel (1), in particular a steelworks converter (1), wherein the lance (7) is guided by means of a drive (26, 27, 30) arranged in the direction of the axis (24) of the lance (7) and is movable in the direction of its axis (24), and wherein the drive (26, 27, 30) is mounted to be pivotable about two crossing axes (16, 22) as well as is displaceable in an approximately horizontal sense in the direction perpendicular to the axis (24) of the lance (7), characterized in that horizontally extending rails (10) are arranged on a stationary supporting structure (8), along which a carrying plate (14) is displaceably guided, on which carrying plate a base plate (17) is mounted to be pivotable about an axis (16) perpendicular to the carrying plate (14) and on which base plate (17) at least one housing (21) comprising a drive (26, 27, 30) for the lance (7) designed as a guide, which drive is stationary in the direction of the axis of the lance, is mounted to be pivotable about an axis (22) directed parallel to the guide rails (10), wherein a displacement means (15) for displacing the carrying plate (14) relative to the stationary supporting structure (8), a pivot means (18) for pivoting the base plate (17) relative to the carrying plate (14) and a further pivot means (23) for pivoting the housing (21) relative to the base plate (17) are provided.
  2. An arrangement according to claim 1, characterized in that the housing (21) comprises a further drive (26, 27, 30) for a further means, such as a cleaning device (29), which is introducible into the metallurgical vessel (1).
  3. An arrangement according to claim 1 or 2, characterized in that the drive is designed as a frictional wheel drive (26, 27, 30).
  4. An arrangement according to one or several of claims 1 to 3, characterized in that the housing (21), at its passage opening facing the metallurgical vessel (1), comprises a scraping means (32) for the lance (7) or, if a further means (29) is provided, for this further means (29), for cleaning the lance (7) or said further means (29), respectively.
  5. An arrangement according to one or several of claims 1 to 4, characterized in that a braking means (31) is provided in the housing (21) for braking and fixing the lance (7) or, if a further means (29) is provided, for braking and fixing this further means (29), relative to the housing.
  6. An arrangement according to one or several of claims 1 to 5, characterized in that the lance (7) is designed to be hollow, the cavity of the lance being connected to a gas supply duct (37).
  7. An arrangement according to claim 6, characterized in that a protecting tube (34) is provided in the interior of the hollow lance (7) for measuring cables (35) arranged in the interior of the lance (7).
  8. An arrangement according to claim 7, characterized in that the protecting tube (34) is connected to a gas supply duct (37).
  9. An arrangement according to one or several of claims 3 to 8, characterized in that the frictional wheel drive (26, 27, 30) is formed by two pairs of frictional wheels (25), one pair (26, 27) of frictional wheels each supporting the lance (7) on two opposite sides (33) and at least one frictional wheel (25) of a pair (26, 27) of frictional wheels being drivable, said frictional wheel (25) and/or the oppositely arranged frictional wheel (25) of this pair (25, 26) of frictional wheels being pressable at the lance (7).
  10. An arrangement according to one or several of claims 3 to 8, characterized in that the frictional wheel drive is formed by at least three frictional wheels (25), at least one of which is drivable and at least one of which is pressable at the lance (7) (Fig. 3).
  11. A method of positioning a lance (7) relative to an opening (4) of a tiltable metallurgical vessel (1), in particular a steelworks converter (1), by using an arrangement according to claim 1, characterized in that an actual position (A) of the metallurgical vessel (1) is detected by means of a position transmitter (39) arranged on the vessel (1) and means (15, 18, 23) for positioning the lance (7) as a function of the actual position detected are actuated.
  12. A method according to claim 11, characterized in that the position of the lance (7) is determined by position sensors (42, 43, 44), i.e., a distance sensor (42) determining the location of the carrying plate (14), an angle sensor (43) determining the angular position of the base plate (17) relative to the carrying plate, and an angle sensor (44) determining the angular position of the housing (21) relative to the base plate (17), and that the values of the position transmitter (39) of the metallurgical vessel are transmitted to a computer (41), the latter triggering the means for positoning the lance (7), i.e., the displacement means (15), the pivot means (18) and the pivot means (23), until the position sensors allocated to the lance (7) indicate a coincidence of the position of the lance and of the position of the opening (4) of the metallurgical vessel (1).
EP91890014A 1990-02-02 1991-01-28 An arrangement for installing and removing a lance into and from a metallurgical vessel and a method therefor Expired - Lifetime EP0444006B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT91890014T ATE101877T1 (en) 1990-02-02 1991-01-28 DEVICE FOR INSTALLING AND REMOVING A LANCE INTO AND FROM A METALLURGICAL VESSEL.

Applications Claiming Priority (2)

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

Publications (2)

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

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP91890014A Expired - Lifetime EP0444006B1 (en) 1990-02-02 1991-01-28 An arrangement for installing and removing a lance into and from a metallurgical vessel and a method therefor

Country Status (9)

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

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FI925647A (en) * 1992-12-11 1994-06-12 Outokumpu Chrome Oy The gas pipe feeder melts into the furnace containing the material
DE59608799D1 (en) * 1995-05-30 2002-04-04 Clyde Bergemann Gmbh DRIVE SYSTEM FOR WATER Lance BLOWERS WITH HOUSING FOR LOCKING AND FLUSHING MEDIUM AND METHOD FOR OPERATION
NL1003186C2 (en) * 1996-05-23 1997-11-25 Hoogovens Staal Bv Pressure vessel, use of that pressure vessel in the preparation of pig iron, as well as pipe suitable for use in that pressure vessel.
US20040063212A1 (en) * 2002-09-30 2004-04-01 Allen Pratt Conditioning chamber for metallurgical surface science
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
JP5008559B2 (en) * 2004-07-27 2012-08-22 テクノロジカル リソーシズ プロプライエタリー リミテッド Device for injecting solid particulate material into a container
TWI373529B (en) * 2004-07-27 2012-10-01 Tech Resources Pty Ltd Smelting apparatus
DE602006014130D1 (en) * 2005-03-02 2010-06-17 Tech Resources Pty Ltd LANZ EXTRACTION
KR100758419B1 (en) 2006-06-08 2007-09-14 주식회사 포스코 An apparatus for crushing skulls in preheating opening of vessel in vacuum degasser
CN101245401B (en) * 2007-02-15 2010-07-28 中冶赛迪工程技术股份有限公司 Revolving furnace sublance probe clamper device
CN101307989B (en) * 2008-06-26 2010-06-02 缪建通 Cement kiln mechanically actuated arm device
JP6474746B2 (en) * 2016-01-29 2019-02-27 日立建機株式会社 Gas blower

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Also Published As

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

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