EP2783773B1 - Device and method for extracting a gas purging plug from the wall of a metallurgical container - Google Patents
Device and method for extracting a gas purging plug from the wall of a metallurgical container Download PDFInfo
- Publication number
- EP2783773B1 EP2783773B1 EP14162500.4A EP14162500A EP2783773B1 EP 2783773 B1 EP2783773 B1 EP 2783773B1 EP 14162500 A EP14162500 A EP 14162500A EP 2783773 B1 EP2783773 B1 EP 2783773B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- gas purging
- unlocking
- coupling device
- coupling
- purging plug
- 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.)
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Links
- 238000010926 purge Methods 0.000 title claims description 91
- 238000000034 method Methods 0.000 title claims description 17
- 230000008878 coupling Effects 0.000 claims description 103
- 238000010168 coupling process Methods 0.000 claims description 103
- 238000005859 coupling reaction Methods 0.000 claims description 103
- 230000006835 compression Effects 0.000 claims description 17
- 238000007906 compression Methods 0.000 claims description 17
- 238000013459 approach Methods 0.000 claims description 7
- 238000010276 construction Methods 0.000 claims 1
- 238000000926 separation method Methods 0.000 claims 1
- 238000006073 displacement reaction Methods 0.000 description 6
- 239000011470 perforated brick Substances 0.000 description 4
- 230000005484 gravity Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
- B22D1/002—Treatment with gases
- B22D1/005—Injection assemblies therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/08—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like for bottom pouring
-
- 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
- C21C5/48—Bottoms or tuyéres of converters
Definitions
- the invention relates to a device and a method for extracting a gas purging plug with a gas purging pipe from a perforated brick, which is arranged in the wall of a metallurgical vessel.
- EP 2 343 386 A1 a device for extracting a gas purging plug from the wall of a metallurgical vessel with a coupling device for coupling to the gas purging of the gas purging plug, with a traversing device for moving the coupling device with or without the coupled gas purging plug and with a support device for supporting the associated with the support displacement device against the outside of the metallurgical vessel and for positioning the coupling device with respect to the gas purging plug.
- DE 298 07 416 U1 also a device for extracting a gas purging plug from the wall of a metallurgical vessel with a coupling device in the form of a bell, at the periphery of a plurality of radially acting into the interior of the bell engaging elements, wherein the engagement elements serve for engaging behind a flange-like projection on the outside of the gas purging pipe , Outside the coupling device, an unlocking device is provided, which is displaceable coaxially to the coupling device for Moving the engaging radially outward and thus unlocking the gas purging plug from the coupling device.
- the invention has the object of developing a known device and a known method for extracting a gas purging plug from the wall of a metallurgical vessel to the effect that the device and the method are less expensive to realize and easier to handle.
- the flange-like projection may also be part of a groove in the gas purging line.
- the locking compression springs offer the advantage that the locking of the gas purging line in the coupling device still works reliably even in cases where a radial offset between the longitudinal axis of the coupling device and the longitudinal axis of the introduced into the coupling device gas purging should be given when coupling.
- the radial bias of the engaging elements via the individually associated locking springs allows an individual radial movement of the engaging elements over different radial distances, as in the described radial offset is required to allow even in this case still a safe engaging behind or a secure locking.
- the radial bias when coupling the coupling device to the gas purging plug ensures automatic snapping of the engaging elements behind the flange-like projection on the gas purging line when the coupling device is correctly positioned. This only requires the traversing device for the coupling device, but no separate drive for the engaging elements.
- the coupling device and the unlocking device although not rigid, but yet resiliently coupled to each other via the claimed Entriegelungstikfeder.
- This elastic coupling has the advantage that for pulling out the gas purging plug from the wall of the metallurgical vessel and for unlocking the device or the coupling device of the coupled gas purging plug in a discharge position only a single drive means in the form of the claimed traversing required.
- the device according to the invention is designed so that it allows the automatic execution of said functions even waiving the evaluation of proximity sensors.
- the usage of Proximity sensors may be helpful in monitoring the performance of the above functions.
- the claimed traversing device is preferably designed as a piston-cylinder unit; However, it can alternatively also z. B. be designed as a spindle drive.
- FIG. 1 shows a longitudinal section through the device according to the invention in a coupling position, ie when it is coupled to the gas purging line 210 of a gas purging plug 200 in the wall 310 of a metallurgical vessel.
- the device 100 comprises a hood-shaped support device 130, which is employed by means of a robot on the outside of the wall 310 of a metallurgical vessel.
- the support device 130 for example via a buffer device, in FIG. 1 not shown, connected to the robotic arm 420 of the robot.
- the supporting device 130 is set against the wall 310 in such a way that it covers the gas purging plug 200 and its gas purging line 210.
- the device comprises a coupling device 110 in the form of a bell with a plurality of circumferentially spaced engaging elements for engaging behind a flange projection 212 on the outside of the gas purging line 210.
- Each of the engaging elements 112 is associated with a locking compression spring 115 for biasing the engaging elements radial direction.
- the coupling device 110 is connected to a displacement device 120 for the axial movement of the coupling device 110 with or without the coupled gas purging plug 200.
- the shuttle is located at the in FIG. 1 shown embodiment in the form of a piston-cylinder unit, in which a piston 122 is mounted axially displaceably with a piston rod 124 in a cylinder 126.
- the coupling device 110 is fastened to the piston-distal end of the piston rod 124.
- the piston-cylinder unit attached to one side of a bottom plate 132 of the hood-shaped support device.
- the piston rod 124 is guided freely displaceable through an opening in the bottom plate 132.
- the coupling device 110 which is attached to the distal end of the piston rod 124, on the other side of the bottom plate 132, here within the hood-shaped support means 130th
- the device 100 comprises an unlocking device 140, which is also bell-shaped. It surrounds the coupling device 110 substantially coaxially.
- the unlocking device 140 comprises a bottom plate in the form of a perforated disc 144 and distributed at its periphery a plurality of axially, but parallel to the longitudinal axis of the piston rod 124, extending unlocking elements 146.
- the unlocking elements 146 are fixed at one end to the perforated disc 144 and are on its other opposite end 147 formed wedge-shaped.
- the number of unlocking elements 146 corresponds to the number of engaging elements 112, because according to the invention, each of these engaging elements 112 must be assigned an unlocking element 146.
- the unlocking device 140 is elastically connected via a Entriegelungsdruckfeder 142 in the axial direction with the coupling device 110.
- the unlocking device 140 is pushed onto the piston rod 124, wherein the piston rod 124 is guided freely displaceable through a hole in the perforated disc 144 of the unlocking device.
- the unlocking device is aligned such that the wedge-shaped ends 147 their unlocking elements 146 can be brought into engagement with the engagement elements 112.
- the perforated disc 144 of the unlocking device is mounted axially displaceably between the coupling device 110 and the bottom plate 132 of the support device 130. In this way, the unlocking device 140, as far as it allows a travel limit for the unlocking elements 146, also relative to the coupling device 110 axially displaceable.
- axial is used in the present description for the designation of a direction corresponding to the longitudinal axis of the piston rod; the reference numeral for the axial direction is a. Perpendicular to this, the radial direction r is aligned.
- FIG. 2 shows a detailed view of the coupling device 110 from FIG. 1 with the engagement elements 112. Wedge-shaped stops 114 of the engagement elements for raising and slipping the wedge-shaped ends 147 of the unlocking elements 146 are clearly visible.
- the bottom of the bell-shaped coupling device 110 has the reference number 118.
- FIG. 3 shows the device 100 according to the invention in a transport position.
- the gas purging plug 200 is pulled out of the perforated brick or the wall 310 of the metallurgical vessel.
- the support device 130 is still supported on the wall 310 of the metallurgical vessel, however, the coupling device 110 with the coupled gas purging plug 200 is moved further under the support device 130 or into its interior; specifically so far that the perforated disc 144 or bottom plate of the unlocking device 140 abuts against the bottom plate 132 of the support device 130 or this has approached by less than a predetermined second maximum distance d2.
- This approximation can be detected by means of a second proximity sensor 160.
- the second proximity sensor 160 could, for example, be arranged on the perforated disc 144 of the unlocking device or on the bottom plate 132 of the supporting device. It's important, that in the transport position the unlocking compression spring 142 is still relaxed or biased only, ie a fourth predetermined distance d4 between the bottom 118 of the coupling device 110 and the bottom plate 132 of the support device has not fallen below. The distance between the bottom plate 118 of the coupling device 110 and the bottom plate 132 of the support device 130 can be monitored by means of a third proximity sensor 170.
- the third proximity sensor could be, for example, at the bottom of the coupling device or, as in FIG FIG. 3 shown to be arranged on the bottom plate of the support device. In the transport position, the entire apparatus 100 together with the coupled gas purging plug can be moved away from the wall 310 of the metallurgical vessel with the aid of the robot.
- the three situations of coupling, pulling out the gas purging plug into a transport position and disconnecting or unlocking the gas purging plug from the coupling device 110 are to be distinguished. All three situations are described in more detail below.
- the support device 130 is adjusted by means of a robot to the wall 310 of the metallurgical vessel such that the gas purging line 210 of the gas purging plug 200 to be extracted at least approximately with the longitudinal axis of the piston rod 124 flees.
- a certain offset between the longitudinal axes of the two components mentioned and / or tilting is tolerable.
- the coupling device 110 is then to move with the aid of the shuttle 120 to the gas purging plug 200.
- the approach to the gas purging plug can be monitored by means of a first proximity sensor 150. Specifically, it can be ensured in this way that a permissible maximum distance between z. B. the front side of the coupling device and the end face of the gas purging plug is smaller than a permissible maximum distance d1.
- the proximity switch 150 is designed to monitor the falling below a predetermined distance d1; when reaching or falling below the predetermined first maximum distance d1, the coupling position, in which the coupling device is coupled to the gas purging line, is reached.
- the first proximity sensor 150 may be arranged, for example, on the front side of the coupling device 110 facing the gas purging plug, as shown in FIG FIG. 1 is shown.
- the coupling device is preferably designed so that upon reaching or falling below the maximum distance d1, the coupling device 110 is pushed so far over the Gas Jardin endeavour 210 that the engagement elements 112 snap in due to their radial bias by the locking compression springs 115 into a groove in the gas purging 210 and thus a projection Engage 212 in the gas purging pipe.
- This situation is called coupling position and is in the Figures 1 and 2 shown. In the coupling position, the engagement elements 112 are in a locked position.
- the radially biased engaging elements are chamfered or chamfered at its the gas purging plug 200 side facing, as shown in FIG. 2 is clearly visible. This slope simplifies the temporary radial Retreat of the engaging radially outward when sliding onto the gas purging 210th
- the gas purging plug 200 is pulled out of the wall 310 of the metallurgical vessel, possibly from a perforated brick 320.
- the coupling device 110 together with the gas purging plug 200 coupled thereto, is pulled out of a perforated brick 320 with the aid of the displacement device 120.
- the coupling device 110 with the aid of the piston rod 124 by a first distance S1 further under the hood-shaped support means 130, that is further drawn into this into a so-called transport position.
- This transport position is in FIG. 3 shown.
- the transport position is typically reached when a predetermined maximum distance d2 between the perforated disc 144 of the unlocking and the bottom plate 132 is reached or fallen below. This can be detected with the aid of a second proximity sensor 160. Just like the first maximum distance d1, the second maximum distance d2 can also be set to 0 cm; at the in FIG. 3 As shown, this is the case. It is important that in this in FIG. 3 shown transport position the Entriegelungs réellefeder 142 is basically still relaxed or just biased, but at least not compressed beyond an acceptable level. This is important because in the transport position the gas purging plug 200 must remain securely coupled to the coupling device 110, which is only ensured if the engagement elements 112 are in their locking position described above. An excessive compression of the Entriegelungsdruckfeder 142 and thus an undesirable here relative displacement between the unlocking 140 and the coupling device 110 would lead in the present case to an unwanted unlocking of the gas purging plug 200 of the coupling device 110.
- Unlocking is desired only when the device according to the invention was moved together with the still coupled gas purging plug with the help of the robot to a Abschort.
- the device 100 according to the invention is preferably rotated relative to the coupling position by 90 ° to the gas purging 200 z. B. to drop over a disposal container due to its weight; this is in FIG. 4 indicated by the vertical arrow pointing downwards.
- the device 100 is moved to a discharge position and unlocked there.
- the coupling device 110 is moved further into the supporting device 130 with the aid of the traversing device 120, more precisely with the aid of the piston rod 124.
- the process is carried out deliberately against the force of Entriegelungstikfeder 142, wherein this is compressed, as in FIG. 4 can be seen.
- Said retraction of the coupling device 110 can be carried out until a predetermined third maximum distance d3 between the perforated disc 144 and the bottom plate 132 is reached or undershot.
- the reaching or falling below the third maximum distance can be detected by means of a third proximity sensor 170.
- the unlocking elements 146 are displaced coaxially with the coupling device 110 and relative thereto. Concretely, the wedge-shaped ends 147 of the unlocking elements 146 then slide on the wedge-shaped stops 114 of the engagement elements 112 during this relative movement, as a result of which the engagement elements are displaced radially outward against the force of the locking compression springs 115. Both the sliding of the unlocking elements 146 as well as the displacement of the engagement elements 112 radially outward in the FIGS. 5a and 5b to recognize. Due to the displacement to the outside, the engagement elements 112 are pulled out of the groove in the gas purging line 210 and Thus, the gas purging plug 210 is unlocked or released. This position of the engagement elements 112 is also referred to as the unlocked position. In the unlocked state, the gas purging plug 200 may fall off the coupling device due to its weight, as shown in FIG FIG. 5b is shown.
- the key advantage of the device according to the invention is the fact that all three functions mentioned, namely the coupling of the coupling device 110 to the Gas Jardin Gustav 210, the withdrawal of the gas purging plug from the hole stone in a transport position and unlocking alone with a single drive device, namely the said traversing device can take place by the coupling device being moved into three different positions, namely the said coupling position, transport position or discharge position or unlocking position.
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- Organic Chemistry (AREA)
- Treatment Of Steel In Its Molten State (AREA)
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Description
Die Erfindung betrifft eine Vorrichtung und ein Verfahren zum Herausziehen eines Gasspülsteins mit einer Gasspülleitung aus einem Lochstein, welcher in der Wandung eines metallurgischen Gefäßes angeordnet ist.The invention relates to a device and a method for extracting a gas purging plug with a gas purging pipe from a perforated brick, which is arranged in the wall of a metallurgical vessel.
Im Stand der Technik sind derartige Vorrichtungen und Verfahren grundsätzlich bekannt, z. B. aus der
Darüber hinaus offenbart die europäische Patentanmeldung
Schließlich offenbart das deutsche Gebrauchsmuster
Bei der Vorrichtung gemäß der Gebrauchsmusteranmeldung
Der Erfindung liegt die Aufgabe zugrunde, eine bekannte Vorrichtung und ein bekanntes Verfahren zum Herausziehen eines Gasspülsteins aus der Wandung eines metallurgischen Gefäßes dahingehend weiterzubilden, dass die Vorrichtung und das Verfahren kostengünstiger realisierbar und einfacher handhabbar werden.The invention has the object of developing a known device and a known method for extracting a gas purging plug from the wall of a metallurgical vessel to the effect that the device and the method are less expensive to realize and easier to handle.
Die kanadische Patentanmeldung
Diese Aufgabe wird bezüglich der Vorrichtung durch den Gegenstand des Patentanspruchs 1 gelöst. Dieser ist dadurch gekennzeichnet, dass die Eingreifelemente aufgrund ihrer radialen Vorspannung durch die Verriegelungsdruckfeder in eine Nut in der Gasspülleitung einschnappen und damit den Vorsprung 212 in der Gasspülleitung hintergreifen.This object is achieved with respect to the device by the subject-matter of
Der flanschartige Vorsprung kann auch Teil einer Nut in der Gasspülleitung sein.The flange-like projection may also be part of a groove in the gas purging line.
Die Verriegelungsdruckfedern bieten den Vorteil, dass auch in den Fällen, bei denen beim Ankuppeln ein radialer Versatz zwischen der Längsachse der Kupplungseinrichtung und der Längsachse der in die Kupplungseinrichtung eingeführten Gasspülleitung gegeben sein sollte, das Verriegeln der Gasspülleitung in der Kupplungseinrichtung noch sicher funktioniert. Konkret ermöglicht die radiale Vorspannung der Eingreifelemente über die individuell zugeordneten Verriegelungsdruckfedern ein individuelles radiales Verfahren der Eingreifelemente auch über unterschiedliche radiale Wegstrecken, wie dies bei dem beschriebenen radialen Versatz erforderlich ist, um auch in diesem Fall noch ein sicheres Hintergreifen beziehungsweise ein sicheres Verriegeln zu ermöglichen. Darüber hinaus gewährleistet die radiale Vorspannung beim Ankuppeln der Kupplungseinrichtung an den Gasspülstein ein automatisches Einschnappen der Eingreifelemente hinter den flanschartigen Vorsprung an der Gasspülleitung, wenn die Kupplungseinrichtung richtig positioniert ist. Dafür bedarf es lediglich der Verfahreinrichtung für die Kupplungseinrichtung, aber keines separaten Antriebs für die Eingreifelemente.The locking compression springs offer the advantage that the locking of the gas purging line in the coupling device still works reliably even in cases where a radial offset between the longitudinal axis of the coupling device and the longitudinal axis of the introduced into the coupling device gas purging should be given when coupling. Specifically, the radial bias of the engaging elements via the individually associated locking springs allows an individual radial movement of the engaging elements over different radial distances, as in the described radial offset is required to allow even in this case still a safe engaging behind or a secure locking. In addition, the radial bias when coupling the coupling device to the gas purging plug ensures automatic snapping of the engaging elements behind the flange-like projection on the gas purging line when the coupling device is correctly positioned. This only requires the traversing device for the coupling device, but no separate drive for the engaging elements.
Gemäß einem ersten Ausführungsbeispiel werden die Kupplungseinrichtung und die Entriegelungseinrichtung zwar nicht starr, aber doch federelastisch über die beanspruchte Entriegelungsdruckfeder miteinander gekoppelt. Diese elastische Kopplung bietet den Vorteil, dass zum Herausziehen des Gasspülsteins aus der Wandung des metallurgischen Gefäßes und zum Entriegeln der Vorrichtung bzw. der Kupplungseinrichtung von dem angekuppelten Gasspülstein in einer Abwurfposition lediglich eine einzige Antriebseinrichtung in Form der beanspruchten Verfahreinrichtung erforderlich ist.According to a first embodiment, the coupling device and the unlocking device, although not rigid, but yet resiliently coupled to each other via the claimed Entriegelungsdruckfeder. This elastic coupling has the advantage that for pulling out the gas purging plug from the wall of the metallurgical vessel and for unlocking the device or the coupling device of the coupled gas purging plug in a discharge position only a single drive means in the form of the claimed traversing required.
Für die drei genannten Funktionen Ankuppeln, Herausziehen und Entriegeln sind deshalb bei der erfindungsgemäßen Vorrichtung keine separaten Antriebe erforderlich, weshalb die erfindungsgemäße Vorrichtung kostengünstiger produziert werden kann und einfacher gehandhabt werden kann. Die einfachere Handhabung ergibt sich insbesondere auch aus der Tatsache, dass bei einem Verfahren der Kupplungseinrichtung mit Hilfe der Verfahreinrichtung in bestimmte Stellungen das Ankuppeln an die Gasspülleitung, das Herausziehen des Spülsteins aus der Wandung des Gefäßes sowie das Entriegeln automatisch erfolgen, wie dies weiter unten noch näher beschrieben ist.For the three mentioned functions coupling, pulling and unlocking therefore no separate drives are required in the device according to the invention, which is why the device according to the invention can be produced more cheaply and can be handled more easily. The easier handling results in particular from the fact that in a method of coupling device using the traversing in certain positions, the coupling to the Gasspülleitung, pulling out of the purging plug from the wall of the vessel and the unlocking done automatically, as further below is described in more detail.
Darüber hinaus ist die erfindungsgemäße Vorrichtung so ausgelegt, dass sie die automatische Ausführung der genannten Funktionen selbst unter Verzicht auf die Auswertung von Näherungssensoren erlaubt. Die Verwendung von Näherungssensoren kann jedoch zur Überwachung der Durchführung der genannten Funktionen hilfreich sein.In addition, the device according to the invention is designed so that it allows the automatic execution of said functions even waiving the evaluation of proximity sensors. The usage of Proximity sensors, however, may be helpful in monitoring the performance of the above functions.
Die beanspruchte Verfahreinrichtung ist vorzugsweise als Kolben-Zylinder-Einheit ausgebildet; sie kann jedoch alternativ auch z. B. als Spindelantrieb ausgebildet sein.The claimed traversing device is preferably designed as a piston-cylinder unit; However, it can alternatively also z. B. be designed as a spindle drive.
Die genannte Aufgabe wird weiterhin durch ein System gemäß Patentanspruch 11 und ein Verfahren gemäß Patentanspruch 12 gelöst. Die Vorteile dieser Lösungen entsprechen den oben mit Bezug auf die beanspruchte Vorrichtung genannten Vorteilen.The above object is further achieved by a system according to claim 11 and a method according to claim 12. The advantages of these solutions correspond to the advantages mentioned above with respect to the claimed device.
Vorteilhafte Ausgestaltungen der beanspruchten Vorrichtung und des beanspruchten Verfahrens sind Gegenstand der abhängigen Ansprüche.Advantageous embodiments of the claimed device and the claimed method are the subject of the dependent claims.
Der Beschreibung sind insgesamt 6 Figuren beigefügt, wobei
Figur 1- einen Längsschnitt durch die erfindungsgemäße Vorrichtung in einer Ankoppelposition;
Figur 2- eine Detailansicht der erfindungsgemäßen Kupplungseinrichtung aus
Fig. 1 mit angekoppelter Gasspülleitung; - Figur 3
- einen Längsschnitt durch die erfindungsgemäße Vorrichtung in einer Transportposition;
- Figur 4
- einen Längsschnitt durch die erfindungsgemäße Vorrichtung in einer Abwurfposition;
- Figur 5a
- eine Detailansicht zur
Figur 4 mit der Kupplungseinrichtung in einer Entriegelungsstellung unmittelbar nach dem Entriegeln; und - Figur 5b
- die erfindungsgemäße Kupplungseinrichtung in der Entriegelungsstellung mit aufgrund der Schwerkraft herausfallendem Gasspülstein
- FIG. 1
- a longitudinal section through the device according to the invention in a coupling position;
- FIG. 2
- a detailed view of the coupling device according to the invention
Fig. 1 with coupled gas flushing line; - FIG. 3
- a longitudinal section through the device according to the invention in a transport position;
- FIG. 4
- a longitudinal section through the device according to the invention in a discharge position;
- FIG. 5a
- a detailed view of the
FIG. 4 with the coupling device in an unlocked position immediately after unlocking; and - FIG. 5b
- the coupling device according to the invention in the unlocked position with falling out due to gravity gas purging plug
Die Erfindung wird nachfolgend unter Bezugnahme auf die genannten Figuren in Form von Ausführungsbeispielen detailliert beschrieben. Gleiche technische Elemente sind in allen Figuren mit gleichen Bezugszeichen bezeichnet.The invention will be described in detail below with reference to the said figures in the form of embodiments. The same technical elements are designated in all figures with the same reference numerals.
Die Vorrichtung 100 umfasst eine haubenförmige Abstützeinrichtung 130, welche mit Hilfe eines Roboters außen an die Wandung 310 eines metallurgischen Gefäßes angestellt ist. Zu diesem Zweck ist die Abstützeinrichtung 130 beispielsweise über eine Puffereinrichtung, in
Neben der Abstützeinrichtung umfasst die Vorrichtung eine Kupplungseinrichtung 110 in Form einer Glocke mit einer Mehrzahl von an ihrem Umfang verteilt angeordneten Eingreifelementen zum Hintergreifen eines flanschartigen Vorsprungs 212 an der Außenseite der Gasspülleitung 210. Jedem der Eingreifelemente 112 ist eine Verriegelungsdruckfeder 115 zugeordnet zum Vorspannen der Eingreifelemente in radialer Richtung. Die Kupplungseinrichtung 110 ist mit einer Verfahreinrichtung 120 verbunden zum axialen Verfahren der Kupplungseinrichtung 110 mit dem oder ohne den angekuppelten Gasspülstein 200. Die Verfahreinrichtung ist bei dem in
Konkret ist bei dem in
Weiterhin umfasst die erfindungsgemäße Vorrichtung 100 eine Entriegelungseinrichtung 140, welche ebenfalls glockenförmig ausgebildet ist. Sie umfängt die Kupplungseinrichtung 110 im Wesentlichen koaxial. Die Entriegelungseinrichtung 140 umfasst eine Bodenplatte in Form einer Lochscheibe 144 und an ihrem Umfang verteilt eine Mehrzahl von sich axial, jedoch parallel zur Längsachse der Kolbenstange 124, erstreckenden Entriegelungselementen 146. Die Entriegelungselemente 146 sind mit ihrem einen Ende an der Lochscheibe 144 befestigt und sind an ihrem anderen gegenüberliegenden Ende 147 keilförmig ausgebildet. Die Anzahl der Entriegelungselemente 146 entspricht der Anzahl der Eingreifelemente 112, denn jedem dieser Eingreifelemente 112 muss erfindungsgemäß ein Entriegelungselement 146 zugeordnet sein. Die Entriegelungseinrichtung 140 ist über eine Entriegelungsdruckfeder 142 in axialer Richtung mit der Kupplungseinrichtung 110 elastisch verbunden. Die Entriegelungseinrichtung 140 ist auf die Kolbenstange 124 aufgeschoben, wobei die Kolbenstange 124 durch ein Loch in der Lochscheibe 144 der Entriegelungseinrichtung frei verschiebbar geführt ist. Dabei ist die Entriegelungseinrichtung derart ausgerichtet, dass die keilförmigen Enden 147 ihrer Entriegelungselemente 146 mit den Eingreifelementen 112 in Eingriff bringbar sind. Die Lochscheibe 144 der Entriegelungseinrichtung ist zwischen der Kupplungseinrichtung 110 und der Bodenplatte 132 der Abstützeinrichtung 130 axial verschiebbar gelagert. Auf diese Weise ist die Entriegelungseinrichtung 140, soweit es eine Wegbegrenzung für die Entriegelungselemente 146 zulässt, auch relativ gegenüber der Kupplungseinrichtung 110 axial verschiebbar.Furthermore, the
Der Begriff axial wird in der vorliegenden Beschreibung für die Bezeichnung einer Richtung entsprechend der Längsachse der Kolbenstange verwendet; das Bezugszeichen für die axiale Richtung ist a. Senkrecht dazu ist die radiale Richtung r ausgerichtet.The term axial is used in the present description for the designation of a direction corresponding to the longitudinal axis of the piston rod; the reference numeral for the axial direction is a. Perpendicular to this, the radial direction r is aligned.
Die Funktionsweise der zuvor beschriebenen erfindungsgemäßen Vorrichtung 100 wird nachfolgend erläutert:
- Anmerkung:
Die erfindungsgemäße Vorrichtung 100 dient primär ausschließlich zum Herausziehen des Gasspülsteins aus der Wandung des metallurgischen Gefäßes, nicht jedoch zum Einsetzen eines neuen Gasspülsteins; dafür ist eine andere Vorrichtung vorgesehen, die nicht Gegenstand der vorliegenden Erfindung sind.
- Note: The
device 100 according to the invention serves primarily to extract the gas purging plug from the wall of the metallurgical vessel, but not to insert a new gas purging plug; For this purpose, another device is provided which is not the subject of the present invention.
Beim Betrieb der erfindungsgemäßen Vorrichtung 100 sind die drei Situationen Ankuppeln, Herausziehen des Gasspülsteins in eine Transportposition und Entkuppeln bzw. Entriegeln des Gasspülsteins von der Kupplungseinrichtung 110 zu unterscheiden. Alle drei Situationen werden nachfolgend genauer beschrieben.When operating the
Zu Beginn jedes Ausziehvorganges wird zunächst die Abstützeinrichtung 130 mit Hilfe eines Roboters an die Wandung 310 des metallurgischen Gefäßes derart angestellt, dass die Gasspülleitung 210 des herauszuziehenden Gasspülsteins 200 zumindest näherungsweise mit der Längsachse der Kolbenstange 124 fluchtet. Wie oben beschrieben, ist jedoch auch ein gewisser Versatz zwischen den Längsachsen der beiden genannten Komponenten und/oder ein Verkippen tolerabel.At the beginning of each extraction process, first the support device 130 is adjusted by means of a robot to the
Nach dem Anstellen der Abstützeinrichtung 130 an die Wandung 310 wird die Kupplungseinrichtung 110 dann mit Hilfe der Verfahreinrichtung 120 auf den Gasspülstein 200 zu verfahren. Die Annäherung an den Gasspülstein kann mit Hilfe eines ersten Näherungssensors 150 überwacht werden. Konkret kann auf diese Weise sichergestellt werden, dass ein zulässiger Maximalabstand zwischen z. B. der Stirnseite der Kupplungseinrichtung und der Stirnseite des Gasspülsteins kleiner als ein zulässiger Maximalabstand d1 ist. Insbesondere ist der Näherungsschalter 150 ausgebildet, das Unterschreiten eines vorbestimmten Abstandes d1 zu überwachen; bei Erreichen oder Unterschreiten des vorgegebenen ersten Maximalabstandes d1 ist die Ankoppelposition, in welcher die Kupplungseinrichtung an die Gasspülleitung angekuppelt ist, erreicht. Der erste Näherungssensor 150 kann beispielsweise an der dem Gasspülstein zugewandten Stirnseite der Kupplungseinrichtung 110 angeordnet sein, wie dies in
Die Kupplungseinrichtung ist vorzugsweise so konstruiert, dass bei Erreichen oder Unterschreiten des Maximalabstandes d1 die Kupplungseinrichtung 110 soweit über die Gasspülleitung 210 geschoben ist, dass die Eingreifelemente 112 aufgrund ihrer radialen Vorspannung durch die Verriegelungsdruckfedern 115 in eine Nut in der Gasspülleitung 210 einschnappen und damit einen Vorsprung 212 in der Gasspülleitung hintergreifen. Diese Situation wird als Ankoppelposition bezeichnet und ist in den
Nach dem Ankuppeln wird der Gasspülstein 200 aus der Wandung 310 des metallurgischen Gefäßes, gegebenenfalls aus einem Lochstein 320 herausgezogen. Zu diesem Zweck wird die Kupplungseinrichtung 110 zusammen mit dem darin angekuppelten Gasspülstein 200 mit Hilfe der Verfahreinrichtung 120 aus einem Lochstein 320 herausgezogen. Dabei wird die Kupplungseinrichtung 110 mit Hilfe der Kolbenstange 124 um eine erste Strecke S1 weiter unter die haubenförmige Abstützeinrichtung 130, d. h. weiter in diese hinein in eine sogenannte Transportposition gezogen. Diese Transportposition ist in
Ein Entriegeln ist dagegen erst dann erwünscht, wenn die erfindungsgemäße Vorrichtung zusammen mit dem noch angekuppelten Gasspülstein mit Hilfe des Roboters an einen Abwurfort bewegt wurde. An dem Abwurfort ist die erfindungsgemäße Vorrichtung 100 vorzugsweise gegenüber der Ankoppelposition um 90° gedreht, um den Gasspülstein 200 z. B. über einem Entsorgungsbehälter aufgrund seiner Gewichtskraft fallen zu lassen; dies ist in
An dem Abwurfort wird die Vorrichtung 100 in eine Abwurfposition gefahren und dort entriegelt. Zum Entriegeln wird die Kupplungseinrichtung 110 mit Hilfe der Verfahreinrichtung 120, genauer gesagt mit Hilfe der Kolbenstange 124 noch weiter in die Abstützeinrichtung 130 hinein verfahren. Das Verfahren erfolgt dabei bewusst entgegen der Kraft der Entriegelungsdruckfeder 142, wobei diese komprimiert wird, wie dies in
Durch die Komprimierung der Entriegelungsdruckfeder 142 werden die Entriegelungselemente 146 koaxial zu der Kupplungseinrichtung 110 und relativ zu dieser verschoben. Konkret gleiten die keilförmigen Enden 147 der Entriegelungselemente 146 dann bei dieser Relativbewegung auf die keilförmigen Anschläge 114 der Eingreifelemente 112 auf, wodurch die Eingreifelemente entgegen der Kraft der Verriegelungsdruckfedern 115 radial nach außen verschoben werden. Sowohl das Aufgleiten der Entriegelungselemente 146 wie auch die Verschiebung der Eingreifelemente 112 radial nach außen ist in den
Der entscheidende Vorteil der erfindungsgemäßen Vorrichtung ist darin zu sehen, dass alle drei genannten Funktionen, nämlich das Ankuppeln der Kupplungseinrichtung 110 an die Gasspülleitung 210, das Herausziehen des Gasspülsteins aus dem Lochstein in eine Transportposition sowie auch das Entriegeln alleine mit einer einzigen Antriebseinrichtung, nämlich der besagten Verfahreinrichtung erfolgen kann, indem diese die Kupplungseinrichtung in drei unterschiedliche Positionen, nämlich die besagte Ankoppelposition, Transportposition oder Abwurfposition bzw. Entriegelungsposition verfährt.The key advantage of the device according to the invention is the fact that all three functions mentioned, namely the coupling of the
- 100100
- Vorrichtungcontraption
- 110110
- Kupplungseinrichtungcoupling device
- 112112
- Eingreifelementengaging
- 114114
- keilförmige Anschlägewedge-shaped stops
- 115115
- VerriegelungsdruckfederLocking spring
- 118118
- Bodenground
- 120120
- Verfahreinrichtungtraversing
- 122122
- Kolbenpiston
- 124124
- Kolbenstangepiston rod
- 126126
- Zylindercylinder
- 130130
- Abstützeinrichtungsupport means
- 132132
- Bodenplattebaseplate
- 140140
- Entriegelungseinrichtungunlocking
- 142142
- EntriegelungsdruckfederEntriegelungsdruckfeder
- 144144
- Lochscheibeperforated disc
- 146146
- Entriegelungselementunlocking
- 147147
- keilförmiges Endewedge-shaped end
- 150150
- erster Näherungssensorfirst proximity sensor
- 160160
- zweiter Näherungssensorsecond proximity sensor
- 170170
- dritter Näherungssensorthird proximity sensor
- 200200
- Gasspülsteingas sink
- 210210
- Gasspülleitunggas purge
- 212212
- Vorsprunghead Start
- 310310
- Wandungwall
- 320320
- LochsteinLochenstein
- 420420
- Roboterarmrobot arm
- d1d1
- erster Maximalabstandfirst maximum distance
- d2d2
- zweiter Maximalabstandsecond maximum distance
- d3d3
- dritter Maximalabstandthird maximum distance
- d4d4
- vierter Abstandfourth distance
- S1S1
- Streckeroute
- S2S2
- Streckeroute
Claims (19)
- Device (100) for withdrawal of a gas purging plug (200) with a gas purging line (210) from the wall (310) of a metallurgical vessel, comprising:- a coupling device (110) for coupling to the gas purging line (210) of the gas purging plug;- a displacing device (120) for moving the coupling device (110) with or without the coupled gas purging plug; and- a support device (130) for supporting the displacing device (120), which is connected with the support device, against the outer side of the metallurgical vessel and for positioning the coupling device (110) with respect to the gas purging plug (200);wherein
the coupling device (110) is constructed in the form of a bell with a plurality of engaging elements (112), which are arranged in distribution at its circumference, for engagement behind a flange-like projection (212) at the outer side of the gas purging line (210); and
a locking compression spring (115) for biasing the engaging elements in radial direction is associated with each of the engaging elements (112);
characterised in that
the engaging elements (112) snap into a groove in the gas purging line (210) by virtue of their radial bias through the locking compression springs (115) and thus engage behind the projection (212) in the gas purging line. - Device (100) according to claim 1, characterised in that an unlocking device (140) associated with the coupling device (110) is provided, which unlocking device Is constructed coaxially with the coupling device and is displaceable relative to the coupling device for unlocking the gas purging line from the coupling device by displacing the engaging elements (112) radially outwardly against the force of the respective locking compression springs (115); and
an unlocking compression spring (142) is provided for connecting the coupling device (110) and the unlocking device (140) together axial direction. - Device (100) according to one of the preceding claims 1 and 2,
characterised in that
the displacing device (120) is constructed in the form of a piston-cylinder unit in which a piston (122) with a piston rod (124) is mounted in a cylinder (126) to be displaceable and wherein the coupling device (110) is secured to the end of the piston rod remote from the piston. - Device (100) according to claim 3,
characterised in that
the piston-cylinder unit is secured to a side of a base plate (132) of the hood-shaped support device;
the piston rod (124) is led through an opening in the base plate to be freely displaceable; and
the piston rod (124) with the coupling device (110) secured thereto is arranged on the other side of the base plate and below the hood-shaped support device (130). - Device (100) according to any one of the preceding claims 2 to 4,
characterised In that
the bell-shaped unlocking device (140) comprises a base plate in the form of an apertured disc (144) and in distribution at the circumference thereof a plurality of unlocking elements (146) which extend parallel to the longitudinal axis of the piston rod (124) and which are attached at one end thereof to the apertured disc (144) and each of wedge-shaped construction at the other end (147) thereof; and
wherein an unlocking element (146) for displacing the respective engaging element (112) radially outwardly when unlocking takes place Is individually associated with each of the engaging elements (112). - Device (100) according to claim 5,
characterised in that
the unlocking device (140) is pushed onto the piston rod (124), which is led through a hole in the apertured disc (144), in such a way that the wedge-shaped ends (147) of the unlocking device can be brought into engagement with the engaging elements (112) and that the apertured disc (144) of the unlocking device is mounted between the coupling device (110) and the base plate (132) of the support device (130) to be axially displaceable. - Device (100) according to claim 6,
characterised in that
the engaging elements (112) each have a respective wedge-shaped abutment (114) for sliding on and sliding off the wedge-shaped ends (147) of the unlocking elements. - Device (100) according to any one of the preceding claims,
characterised by
a first proximity sensor (150) for detecting approach of the coupling device (110) to the gas purging plug, wherein the first proximity sensor Is arranged at, for example, the end of the coupling device (110) facing the gas purging plug. - Device (100) according to any one of the preceding claims,
characterised by
a second proximity sensor (160) for detecting approach of the apertured disc (144) of the unlocking device (140) to the base plate (132) of the support device, wherein the second proximity sensor (160) is arranged at, for example, the apertured disc (144) of the unlocking device (140) or the base plate (132) of the support device. - Device (100) according to any one of the preceding claims,
characterised by
a third proximity sensor (170) for detecting approach of the base (118) of the coupling device (110) to the base plate of the support device, wherein the third proximity sensor is arranged at, for example, the base of the coupling device or the base plate (132) of the support device. - System comprising
a robot with a robot arm (420); and
a device (100) according to any one of the preceding claims, wherein the support device (130) is connectible, preferably by way of a buffer device, with the robot arm for placing the device against the outer side of the metallurgical vessel by way of the gas purging line (210). - Method of withdrawing a gas purging plug (200) from the wall (310) of a metallurgical vessel with the help of the device (100) according to any one of the preceding claims, comprising the following steps:- placing the hood-shaped support device (130) against the wall of the vessel by way of a gas purging line projecting from the gas purging plug (210);- connecting the coupling device (110) with the gas purging line (210) of the gas purging plug (200);- withdrawing the gas purging plug (200) from the wall of the metallurgical vessel; and- separating the gas purging plug (200) from the coupling device (110);characterised in that
for connection of the gas purging line (210) with the coupling device (110) the bell-shaped coupling device Is moved by its open side over the free end over the gas purging line (210) in direction out from the support device (130) until the engaging elements (112) by virtue of the radial bias thereof engage behind a flange-like projection (212) at the outer side of the gas purging line. - Method according to claim 12, characterised in that on withdrawal of the gas purging plug (200) from the wall of the metallurgical vessel the coupling device (110) together with the coupled gas purging plug is drawn through a first path (S1) further into the hood-shaped support device into a transport setting.
- Method according to claim 12 or 13, characterised in that for separation of the gas purging plug (200) from the coupling device (110) the coupling device together with the coupled gas purging valve is drawn against the spring force of the unlocking compression spring (142) relative to the unlocking device (140) through a second path (S2) further into the hood-shaped support device (130) into a discharge position, whereby at the same time the wedge-shaped ends (147) of the unlocking elements are brought to increasing extent into engagement with the engaging elements (112) and whereby the engaging elements are moved against the force of the locking compressions springs (115) radially outwardly from a locking setting Into an unlocking setting.
- Method according to claim 12,
characterised in that
the placing of the support device (130) against the wall (310) of the metallurgical vessel and the transport of the support device together with the gas purging plug into the transport setting is carried out with the help of a robot, with which the device according to any one of claims 1 to 11 is connected. - Method according to claim 12,
characterised in that
during movement of the coupling device (110) by the open side thereof over the free end of the gas purging line (210) the approach of the coupling device to the gas purging plug (200) to below a predetermined first maximum spacing (d1) is detected with the help of the first proximity sensor (150), wherein the first maximum spacing is so dimensioned that the engaging elements (112) then securely engage behind the flange-like projection (212) at the outer side of the gas purging line (210). - Method according to claim 3,
characterised in that
on movement of the coupling device (110) together with the coupled gas purging plug (200) through the first path (S1) into the hood-shaped support device (130) to the transport setting the unlocking device (140) is simultaneously moved under the hood-shaped support device by virtue of the coupling of the unlocking device to the coupling device by way of the unlocking compression spring (142). - Method according to claim 17,
characterised in that
on approach of the unlocking device (140) to the base plate (132) of the support device the falling-below of a predetermined second maximum spacing (d2) is detected, with the help of the second proximity switch (160), as reaching of the transport setting. - Method according to claim 18,
characterised in that
the falling-below of a predetermined third maximum spacing between the base (118) of the coupling device (110) and the base plate (132) of the support device is detected, with the help of a third proximity switch (170), as unlocking setting when the coupling device (110) together with the coupled gas purging plug (200) is drawn against the spring force of the unlocking compression spring (142) through the second path (S2) further into the hood-shaped support device (130) to a discharge position.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE102013205536 | 2013-03-28 | ||
DE102013224641 | 2013-11-29 |
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EP2783773A1 EP2783773A1 (en) | 2014-10-01 |
EP2783773B1 true EP2783773B1 (en) | 2017-02-01 |
Family
ID=50433968
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14162500.4A Active EP2783773B1 (en) | 2013-03-28 | 2014-03-28 | Device and method for extracting a gas purging plug from the wall of a metallurgical container |
Country Status (2)
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EP (1) | EP2783773B1 (en) |
DE (1) | DE102014205899A1 (en) |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
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AT396885B (en) | 1990-09-14 | 1993-12-27 | Veitscher Magnesitwerke Ag | DEVICE FOR THE INSTALLATION AND REMOVAL OF FLUSH BLOCKS FOR METALLURGICAL VESSELS |
DE29807416U1 (en) | 1998-04-27 | 1998-08-13 | Veitsch-Radex AG für feuerfeste Erzeugnisse, Wien | Device for installing and removing sink blocks |
CA2298399A1 (en) * | 2000-02-16 | 2001-08-16 | Gamma Engineering Ltd. | Nozzle- and porous plug-extracting apparatus |
DE102005018020B4 (en) | 2005-04-18 | 2007-05-03 | esb Schweißbetrieb Burbach & Bender GmbH & Co. KG | Pull-out and push-in device for a gas purging plug |
CH699948A2 (en) | 2008-11-17 | 2010-05-31 | Stopinc Ag | Container for molten metal, and a method for an interchangeable connection of a refractory porous plug or a refractory sleeve. |
DE102010004958A1 (en) | 2010-01-12 | 2011-07-14 | SMS Siemag Aktiengesellschaft, 40237 | Purge plug installation and removal tool |
-
2014
- 2014-03-28 EP EP14162500.4A patent/EP2783773B1/en active Active
- 2014-03-28 DE DE201410205899 patent/DE102014205899A1/en active Pending
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DE102014205899A1 (en) | 2014-10-02 |
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