EP1403603A1 - Connecting element for cooling element of a shaft furnace - Google Patents
Connecting element for cooling element of a shaft furnace Download PDFInfo
- Publication number
- EP1403603A1 EP1403603A1 EP03016951A EP03016951A EP1403603A1 EP 1403603 A1 EP1403603 A1 EP 1403603A1 EP 03016951 A EP03016951 A EP 03016951A EP 03016951 A EP03016951 A EP 03016951A EP 1403603 A1 EP1403603 A1 EP 1403603A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- shaft furnace
- flexible
- piece
- connection line
- furnace wall
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 41
- 239000002826 coolant Substances 0.000 claims abstract description 15
- 238000007789 sealing Methods 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000565 sealant Substances 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- IWZSHWBGHQBIML-ZGGLMWTQSA-N (3S,8S,10R,13S,14S,17S)-17-isoquinolin-7-yl-N,N,10,13-tetramethyl-2,3,4,7,8,9,11,12,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-3-amine Chemical compound CN(C)[C@H]1CC[C@]2(C)C3CC[C@@]4(C)[C@@H](CC[C@@H]4c4ccc5ccncc5c4)[C@@H]3CC=C2C1 IWZSHWBGHQBIML-ZGGLMWTQSA-N 0.000 description 1
- 244000089486 Phragmites australis subsp australis Species 0.000 description 1
- 206010041953 Staring Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/12—Casings; Linings; Walls; Roofs incorporating cooling arrangements
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/10—Cooling; Devices therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B1/00—Shaft or like vertical or substantially vertical furnaces
- F27B1/10—Details, accessories, or equipment peculiar to furnaces of these types
- F27B1/24—Cooling arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D9/00—Cooling of furnaces or of charges therein
- F27D2009/0002—Cooling of furnaces
- F27D2009/0018—Cooling of furnaces the cooling medium passing through a pattern of tubes
Definitions
- the invention relates to a connection line for a cooling element for a shaft furnace, in particular for a blast furnace, which has at least one channel arranged in its interior, through which a coolant flows, the connection line connecting the connection piece between the mouth region of the coolant channel assigned to it and a pipe system is beyond the shaft furnace wall and extends through an opening in the shaft furnace wall.
- the invention also relates to a cooling element.
- Cooling elements for example the so-called staves, are used to protect the wall of shaft furnaces or the furnace shell in blast furnaces against the temperatures prevailing inside the furnace, to which coolant, usually water, is applied.
- coolant usually water
- the expansion of the cooling elements can lead to thermal expansion. Since the rigid connection lines or supply and discharge pipes are fixed via direct or indirect, ie unintentional fixed points on the tank, these thermal stresses can cause stress cracks, especially in the connection points between the cooling element and pipes, which are responsible for leaks.
- compensators are installed between the blast furnace and the connection pipes welded firmly in the stave. This ensures a limited relative movement between the blast furnace and the cooling element.
- Such compensators are known for example from DE 296 08 464 U1.
- the freedom of movement achieved due to the expansion joints is not sufficient.
- the freedom of movement of the connecting pipes is increasingly restricted by other criteria that cannot be directly influenced, such as clogging of the expansion joints due to deposits from the inside of the furnace.
- the invention has for its object to provide a solution for a connecting line of a cooling element, in particular a stave, which ensures the greatest possible avoidance of constraint points between the connecting line or the coolant-promoting components and the blast furnace shell.
- the costs for implementation should not significantly exceed the previous framework for the known connecting lines or pipes.
- connection piece or the connection line between the cooling duct and the coolant treatment system not as a rigid pipe connection but as a flexible line piece.
- This piece of line is flexible in terms of its shape and type and remains flexible even during use in the installed state.
- connection line to the furnace Since only the connecting lines, i.e. the supply and discharge pipes are replaced by a flexible pipe section, there is no change in the heat dissipation performance of the cooling element.
- the flexible pipe section can be installed easily.
- the flexible line piece consists in particular of a heat-resistant metallic material, for example of a heat-resistant stainless steel.
- the line piece is a metallic corrugated hose, for example with a spiral corrugation. This combines the properties of flexibility and elasticity with heat resistance.
- the flexible line piece is preferably embedded in an elastic mass. With flexible storage, this ensures a seal against accidental deposits of furnace dust or abrasion of backfill materials on the pipe section.
- a gas-tight seal of the part of the flexible pipe section, which is located on the other side, ie outside, of the shaft furnace wall, subsequently specified as a blast furnace shell, is achieved by means of a hood. It is welded gas-tight to the outside of the furnace.
- the part of the flexible pipe section which extends between the (cold) outside of the cooling element and the inside of the blast furnace shell is surrounded by a protective tube for the purpose of protection against mechanical damage.
- the annular space that then arises between the flexible line piece and the protective tube, the breakthrough in the blast furnace shell and the hood is filled with the elastic sealing compound or packing, which elastically supports and surrounds the flexible line piece during use.
- a tube piece in the sense of a coupling element is arranged at the inner end of the flexible line piece. This is shaped in such a way that it can be inserted precisely into the mouth area of the coolant channel.
- the pipe section is then welded from the outside to the rear of the cooling element.
- the connection can also be achieved by a flange or screw connection with a corresponding thread or by a plug connection.
- the coupling element can be formed from the corrugated hose itself or attached to it at the end.
- a pipe section is also arranged. This is used to connect to the pipes of the blast furnace pipe system. Due to the inner and outer pipe section of the flexible pipe section, quick and easy installation is possible.
- the flexible pipe section can be mounted on the cooling element far from the construction site in workshops or on the blast furnace itself.
- cooling elements already equipped with connecting lines according to the invention are then made available on the blast furnace. It is also possible, if necessary already to convert assembled cooling elements with originally rigid connecting lines with the proposed flexible lines.
- FIG. 1 schematically shows the upper part of a cooling element 1.
- This cooling element can have been produced from a cast or a rolled or forged base body 2. These are, for example, GGG staves with cast-in cooling tubes or staves with milled channels, which are closed with covers welded on the back. They can also be stavelets.
- vertical blind holes 3 are drilled into the base body of the cooling element by deep drilling, which merge into horizontal blind holes 4, the vertical and the two horizontal blind holes forming the cooling channel 5.
- a plurality of these cooling channels 5 can be arranged next to one another in a Cu stave.
- the horizontal blind bores 4 are not closed at the edges like the vertical blind bores 3, but instead form mouth regions 6 to the outside 7 des Staves. If one speaks in this context of vertical blind bores, then these should run parallel to the longitudinal extension of the stave in the not yet installed state.
- the staves are installed along the shaft furnace wall 8, hereinafter referred to as the blast furnace shell.
- the course of the cooling channels 5 then corresponds to the orientation of the furnace.
- Such staves are flowed through with coolant, usually water, which is transported in and out of a pipe system (not shown) arranged outside the blast furnace.
- coolant usually water
- the corrugated hose 10 is mounted flexibly and extends through the opening 11 or the opening in the blast furnace shell without further contact points.
- the corrugated hose 10 has a pipe socket 12, 13 at the end as a coupling element. With the help of the inner pipe socket 12, the corrugated hose 10 is inserted and welded in the mouth region 6 of the cooling channel 5.
- the outer pipe socket 13 is a connecting element to the pipe system (not shown) for cooling water treatment.
- the outer pipe socket 13 serves as a connecting element between the corrugated hose 10 and a sealing hood 14, which is welded to the outside 16 of the blast furnace shell with its other end 15 and takes over the gas-tight seal to the blast furnace shell.
- a protective tube 18 or a sleeve is arranged between the stave and the inside 17 of the furnace.
- the corrugated hose 10 itself is embedded over its entire length in an elastic sealing compound 19, which keeps the hose 10 tight and free of deposits and, above all, does not influence its flexibility. Due to the flexible or elastic corrugated hose 10 and The elastic sealant 19 between the corrugated hose and the annular space of the opening 11 of the blast furnace shell ensures that there are no fixed points in the connector. Danger points for possible leaks are prevented.
- the connecting line is designed as a rigid connecting pipe 20, as can be seen from FIG. 2.
- the connecting pipe is rigidly welded in the mouth area 6 of the cooling channel 5 or on a pipe socket of the stave.
- a compensator 21 By means of a compensator 21, the pipe is connected and sealed only indirectly to the blast furnace.
- a tube 22 serves as mechanical protection.
- this fixed piping is replaced by a flexible line piece, in particular a corrugated hose.
- Fixed points are avoided and thus the build-up of critical stresses during thermal expansion of the cooling element or the resulting leakages. Installation is also quick and easy.
Abstract
Description
Die Erfindung betrifft eine Anschlussleitung für ein Kühlelement für einen Schachtofen, insbesondere für einen Hochofen, das mindestens einen in seinem Inneren angeordneten Kanal, der von einem Kühlmittel durchströmt wird, aufweist, wobei die Anschlussleitung das Verbindungsstück zwischen dem ihr zugeordneten Mündungsbereich des Kühlmittelkanals und einem Rohrsystem jenseits der Schachtofenwand ist und sich durch einen Durchbruch in der Schachtofenwand erstreckt. Zudem betrifft die Erfindung ein Kühlelement.The invention relates to a connection line for a cooling element for a shaft furnace, in particular for a blast furnace, which has at least one channel arranged in its interior, through which a coolant flows, the connection line connecting the connection piece between the mouth region of the coolant channel assigned to it and a pipe system is beyond the shaft furnace wall and extends through an opening in the shaft furnace wall. The invention also relates to a cooling element.
Zum Schutz der Wandung von Schachtöfen bzw. des Hochofenpanzers bei Hochöfen gegen die im Inneren des Ofens herrschenden Temperaturen werden Kühlelemente, zum Beispiel die sogenannten Staves, eingesetzt, die mit Kühlmittel, meist Wasser, beaufschlagt werden. Als Verbindungsstück zwischen dem jeweiligen Kühlkanal und dem Rohrsystem, das üblicherweise mit einem Aufbereitungssystem für das Kühlmittel verbunden ist, sind bei herkömmlichen Staves starre Kühlrohranschlüsse mit entsprechenden Rohrstutzen am Mündungsbereich, d.h. am Eintritts- oder Austrittsbereich des Kühlmittelkanals, verschweißt. Bedingt durch die Einsatzbeanspruchung der Kühlelemente kann es zu Wärmedehnungen kommen. Da die starren Anschlussleitungen bzw. Zu- und Abführungsrohre über direkte oder indirekte, d.h. unbeabsichtigte Festpunkte am Panzer, fixiert sind, können diese Wärmespannungen zu Spannungsrissen vor allem in den Anschlussstellen zwischen Kühlelement und Rohren führen, die für Leckagen verantwortlich sind.Cooling elements, for example the so-called staves, are used to protect the wall of shaft furnaces or the furnace shell in blast furnaces against the temperatures prevailing inside the furnace, to which coolant, usually water, is applied. As a connecting piece between the respective cooling channel and the pipe system, which is usually connected to a treatment system for the coolant, rigid cooling pipe connections are welded in conventional staves to corresponding pipe sockets at the mouth area, ie at the entry or exit area of the coolant channel. The expansion of the cooling elements can lead to thermal expansion. Since the rigid connection lines or supply and discharge pipes are fixed via direct or indirect, ie unintentional fixed points on the tank, these thermal stresses can cause stress cracks, especially in the connection points between the cooling element and pipes, which are responsible for leaks.
Um diesen Defekten vorzubeugen, werden Kompensatoren zwischen dem Hochofenpanzer und den fest im Stave verschweißten Anschlussrohren angebracht. Dadurch wird eine begrenzte Relativbewegung zwischen dem Hochofenpanzer und dem Kühlelement gewährleistet. Derartige Kompensatoren sind beispielsweise aus der DE 296 08 464 U1 bekannt.To prevent these defects, compensators are installed between the blast furnace and the connection pipes welded firmly in the stave. This ensures a limited relative movement between the blast furnace and the cooling element. Such compensators are known for example from DE 296 08 464 U1.
Bei bestimmten, durch die Ofenfahrweise vorgegebenen Bedingungen, reicht die aufgrund der Kompensatoren erzielte Bewegungsfreiheit allerdings nicht aus. Zudem wird die Bewegungsfreiheit der Anschlussrohre durch weitere nicht direkt beeinflussbare Kriterien, wie beispielsweise das Zusetzen der Kompensatoren durch Ablagerungen aus dem Ofeninneren, zunehmend eingeschränkt.In certain conditions given by the furnace operation, however, the freedom of movement achieved due to the expansion joints is not sufficient. In addition, the freedom of movement of the connecting pipes is increasingly restricted by other criteria that cannot be directly influenced, such as clogging of the expansion joints due to deposits from the inside of the furnace.
Der Erfindung liegt die Aufgabe zugrunde, eine Lösung für eine Anschlussleitung eines Kühlelementes, insbesondere eines Staves, zu schaffen, die eine weitestgehende Vermeidung von Zwangspunkten zwischen der Anschlussleitung bzw. den kühlmittelfördernden Bauteilen und dem Hochofenpanzer gewährleistet. Dabei sollen die Kosten zur Realisierung den bisherigen Rahmen für die bekannten Anschlussleitungen bzw. - rohre nicht wesentlich übersteigen.The invention has for its object to provide a solution for a connecting line of a cooling element, in particular a stave, which ensures the greatest possible avoidance of constraint points between the connecting line or the coolant-promoting components and the blast furnace shell. The costs for implementation should not significantly exceed the previous framework for the known connecting lines or pipes.
Diese Aufgabe wird mittels einer Anschlussleitung mit den Merkmalen des Anspruchs 1 sowie mittels eines Kühlelementes mit den Merkmalen des Anspruchs 9 gelöst. Vorteilhafte Weiterbildungen sind in den Unteransprüchen enthalten.This object is achieved by means of a connecting line with the features of
Kerngedanke der Erfindung ist, das Anschlussstück bzw. die Anschlussleitung zwischen dem Kühlkanal und dem Kühlmittelaufbereitungssystem nicht als starre Rohrverbindung sondern als flexibles Leitungsstück auszubilden.The main idea of the invention is to design the connection piece or the connection line between the cooling duct and the coolant treatment system not as a rigid pipe connection but as a flexible line piece.
Dieses Leitungsstück ist von seiner Form und Art heraus in sich flexibel und bleibt auch während des Einsatzes im eingebauten Zustand flexibel.This piece of line is flexible in terms of its shape and type and remains flexible even during use in the installed state.
Auf diese Weise werden Festpunkte jeder Art der Anschlussleitung zum Hochofenpanzer gänzlich vermieden. Da nur die Anschlussleitungen, d.h. die Zu- bzw. Abführrohre, durch ein flexibles Leitungsstück ersetzt werden, kommt es zu keinerlei Veränderungen der Wärmeabfuhrleistung des Kühlelementes.In this way, fixed points of any kind of the connection line to the furnace are completely avoided. Since only the connecting lines, i.e. the supply and discharge pipes are replaced by a flexible pipe section, there is no change in the heat dissipation performance of the cooling element.
Da der Kompensator als Bauteil der bekannten Lösung mit starren Anschlussrohren wegfällt und ein starres Rohr durch ein flexibles Leitungsstück ersetzt wird, kommt es insgesamt zu einer Kostensenkung durch Verringerung der Anzahl der notwendigen Bauteile.Since the compensator as a component of the known solution with rigid connecting pipes is eliminated and a rigid pipe is replaced by a flexible pipe section, there is an overall cost reduction by reducing the number of necessary components.
Zudem kann das flexible Leitungsstück montagefreundlich installiert werden.In addition, the flexible pipe section can be installed easily.
Das flexible Leitungsstück besteht insbesondere aus einem hitzebeständigen metallischen Material, beispielsweise aus einem hitzebeständigen Edelstahl. Insbesondere handelt es sich bei dem Leitungsstück um einen metallischer Wellschlauch, beispielsweise mit einer Wendelwellung. Dieser verbindet die Eigenschaften der Flexibilität bzw. Elastizität mit einer Hitzebeständigkeit.The flexible line piece consists in particular of a heat-resistant metallic material, for example of a heat-resistant stainless steel. In particular, the line piece is a metallic corrugated hose, for example with a spiral corrugation. This combines the properties of flexibility and elasticity with heat resistance.
Das flexible Leitungsstück wird vorzugsweise in eine elastische Masse eingebettet. Diese gewährleistet bei flexibler Lagerung eine Abdichtung gegenüber unbeabsichtigten Ablagerungen von Ofenstaub oder Abrieb von Hinterfüllmassen auf dem Leitungsstück.The flexible line piece is preferably embedded in an elastic mass. With flexible storage, this ensures a seal against accidental deposits of furnace dust or abrasion of backfill materials on the pipe section.
Eine gasdichte Abdichtung des Teils des flexiblen Leitungsstücks, das sich jenseits, d.h. außerhalb, der Schachtofenwand, nachfolgend als Hochofenpanzer konkretisiert, befindet, erfolgt mittels einer Haube. Sie wird gasdicht mit der Aussenseite des Hochofenpanzers verschweißt.A gas-tight seal of the part of the flexible pipe section, which is located on the other side, ie outside, of the shaft furnace wall, subsequently specified as a blast furnace shell, is achieved by means of a hood. It is welded gas-tight to the outside of the furnace.
Der Teil des flexiblen Leitungsstücks, der sich zwischen der (kalten) Außenseite des Kühlelementes und der Innenseite des Hochofenpanzers erstreckt, ist mittels eines Schutzrohres zwecks Schutz gegen mechanische Beschädigung umgeben.The part of the flexible pipe section which extends between the (cold) outside of the cooling element and the inside of the blast furnace shell is surrounded by a protective tube for the purpose of protection against mechanical damage.
Der sich dann zwischen dem flexiblen Leitungsstück und dem Schutzrohr, dem Durchbruch in dem Hochofenpanzer sowie der Haube ergebende Ringraum wird mit der elastischen Dichtungsmasse bzw. -packung aufgefüllt, die das flexible Leitungsstück während des Einsatzes elastisch lagert und umgibt.The annular space that then arises between the flexible line piece and the protective tube, the breakthrough in the blast furnace shell and the hood is filled with the elastic sealing compound or packing, which elastically supports and surrounds the flexible line piece during use.
Zur schnellen und dichten Verbindung in den Mündungsbereichen des Kühlmittelkanals ist an dem inneren Ende des flexiblen Leitungsstücks ein Rohrstück im Sinne eines Kupplungselementes angeordnet. Dieses ist so geformt, dass es passgenau in den Mündungsbereich des Kühlmittelkanals einsetzbar ist. Von außen erfolgt dann ein Verschweißen des Rohrstücks mit der Rückseite des Kühlelementes. Die Verbindung kann auch durch eine Flansch- oder Schraubverbindung mit entsprechendem Gewinde oder durch eine Steckverbindung erreicht werden. Das Kupplungselement kann aus dem Wellschlauch selbst geformt sein oder endseitig an diesen angesetzt sein.For a quick and tight connection in the mouth areas of the coolant channel, a tube piece in the sense of a coupling element is arranged at the inner end of the flexible line piece. This is shaped in such a way that it can be inserted precisely into the mouth area of the coolant channel. The pipe section is then welded from the outside to the rear of the cooling element. The connection can also be achieved by a flange or screw connection with a corresponding thread or by a plug connection. The coupling element can be formed from the corrugated hose itself or attached to it at the end.
Am anderen Ende des flexiblen Leitungsstücks, das jenseits des Hochofenpanzers liegt, ist ebenfalls ein Rohrstück angeordnet. Dieses dient zur Verbindung mit den Rohren des Rohrsystems des Hochofens. Aufgrund des inneren und äußeren Rohrstücks des flexiblen Leitungsstücks ist eine schnelle und einfache Montage möglich.At the other end of the flexible pipe section, which lies beyond the blast furnace shell, a pipe section is also arranged. This is used to connect to the pipes of the blast furnace pipe system. Due to the inner and outer pipe section of the flexible pipe section, quick and easy installation is possible.
Die Montage des flexiblen Leitungsstücks an das Kühlelement kann fern der Baustelle in Werkstätten oder am Hochofen selbst erfolgen. Im ersten Fall werden dann bereits mit erfindungsgemäßen Anschlussleitungen ausgerüstete Kühlelemente am Hochofen zur Verfügung gestellt. Es ist auch möglich, ggfs. bereits montierte Kühlelemente mit ursprünglich starren Anschlussleitungen mit den vorgeschlagenen flexiblen Leitungen umzurüsten.The flexible pipe section can be mounted on the cooling element far from the construction site in workshops or on the blast furnace itself. In the first case, cooling elements already equipped with connecting lines according to the invention are then made available on the blast furnace. It is also possible, if necessary already to convert assembled cooling elements with originally rigid connecting lines with the proposed flexible lines.
Weitere Einzelheiten und Vorteile der Erfindung ergeben sich aus den Unteransprüchen und aus der nachfolgenden Beschreibung, in der die in der Figur dargestellte Ausführungsform der Erfindung näher erläutert wird. Es zeigen:
- Fig. 1
- eine Schnittansicht eines Teils des Kühlelementes mit einer Anschlussleitung aus einem flexiblen Leitungsstück nach der Erfindung;
- Fig. 2
- eine Schnittansicht eines Teils des Kühlelementes mit einer Anschlussleitung aus einem starren Rohr nach dem Stand der Technik.
- Fig. 1
- a sectional view of part of the cooling element with a connecting line from a flexible line piece according to the invention;
- Fig. 2
- a sectional view of part of the cooling element with a connecting line from a rigid tube according to the prior art.
Fig. 1 zeigt schematisch den oberen Teil eines Kühlelementes 1. Dieses Kühlelement kann aus einem gegossenen oder einem gewalzten oder geschmiedeten Grundkörper 2 hergestellt worden sein. Es handelt sich beispielsweise um GGG-Staves mit eingegossenen Kühlrohren oder Staves mit eingefrästen Kanälen, die mit rückseitig aufgeschweißten Abdeckungen verschlossen sind. Es kann sich auch um Stavelets handeln.1 schematically shows the upper part of a
Eine Ausführungsform mit Kühlkanälen als Sackbohrungen wird nachfolgend beispielhaft beschrieben, wobei die Erfindung - wie ausgeführt - hierauf nicht beschränkt ist.An embodiment with cooling channels as blind bores is described below by way of example, the invention - as stated - not being restricted to this.
Nach Fig. 1 sind in den Grundkörper des Kühlelementes vertikal verlaufende Sackbohrungen 3 durch Tiefbohren eingebracht, die in horizontal verlaufende Sackbohrungen 4 übergehen, wobei die vertikalen und die beiden horizontalen Sackbohrungen den Kühlkanal 5 bilden. In einem Cu-Stave können beispielsweise mehrere von diesen Kühlkanälen 5 nebeneinander angeordnet sein. Die horizontal verlaufenden Sackbohrungen 4 werden nicht wie die vertikalen Sackbohrungen 3 randseitig verschlossen, sondern bilden Mündungsbereiche 6 zur Außenseite 7 des Staves. Wenn in diesem Zusammenhang von vertikalen Sackbohrungen gesprochen wird, dann sollen diese parallel zur Längserstreckung des Staves im noch nicht montierten Zustand verlaufen. Wie auch aus den Fig. ersichtlich, werden die Staves entlang der Schachtofenwand 8, nachfolgend als Hochofenpanzer bezeichnet, montiert. Der Verlauf der Kühlkanäle 5 entspricht dann der Ausrichtung des Hochofenpanzers.According to FIG. 1, vertical
Derartige Staves werden mit Kühlmittel, üblicherweise Wasser, durchflossen, das von einem außerhalb des Hochofenpanzers angeordneten Rohrsystem (nicht gezeigt) heran- und wieder abtransportiert wird.Such staves are flowed through with coolant, usually water, which is transported in and out of a pipe system (not shown) arranged outside the blast furnace.
Zwischen den Mündungsbereichen 6 des Kühlkanals, d.h. den Austritts- bzw. Eintrittsbereichen des Kühlkanals 5, und einem solchen Rohrsystem jenseits des Hochofenpanzers ist jeweils als Verbindungsstück ein flexibles Leitungsstück 9, hier in Form eines flexiblen Wellschlauchs 10 aus Stahl, angeordnet. Der Wellschlauch 10 ist flexibel gelagert und erstreckt sich ohne weitere Kontaktpunkte durch den Durchbruch 11 bzw. die Öffnung im Hochofenpanzer. Zur Arretierung weist der Wellschlauch 10 jeweils endseitig einen Rohrstutzen 12, 13 als Kupplungselement auf. Mit Hilfe des inneren Rohrstutzens 12 wird der Wellschlauch 10 in dem Mündungsbereich 6 des Kühlkanals 5 eingesetzt und verschweißt. Der äußere Rohrstutzen 13 ist Verbindungselement zum (nicht gezeigten) Rohrsystem für die Kühlwasseraufbereitung. Gleichzeitig dient der äußere Rohrstutzen 13 als Verbindungselement zwischen dem Wellschlauch 10 und einer Abdichtungshaube 14, die mit ihrem anderen Ende 15 an der Außenseite 16 des Hochofenpanzers verschweißt wird und die gasdichte Abdichtung zum Hochofenpanzer übernimmt. Zwischen Stave und Innenseite 17 des Hochofenpanzers ist ein Schutzrohr 18 bzw. eine Manschette angeordnet. Der Wellschlauch 10 selbst ist über seine gesamte Länge in eine elastische Dichtungsmasse 19 eingebettet, die den Schlauch 10 dicht und frei von Ablagerungen hält und vor allem dessen Flexibilität nicht beeinflusst. Aufgrund des flexiblen bzw. elastischen Wellschlauchs 10 und der elastischen Dichtungsmasse 19 zwischen dem Wellschlauch und dem Ringraum des Durchbruchs 11 des Hochofenpanzers wird erreicht, dass keine Festpunkte im Anschlussstück entstehen. Gefahrenpunkte für mögliche Leckagen werden verhindert.Between the
Im Gegensatz hierzu ist nach der bisher bekannten Lösung die Anschlussleitung als starres Anschlussrohr 20 ausgebildet, wie aus Fig. 2 ersichtlich. In Fig. 2 sind der Fig. 1 entsprechende Bauteile mit gleichen Bezugszeichen versehen. Das Anschlussrohr wird starr im Mündungsbereich 6 des Kühlkanals 5 oder an einem Rohrstutzen des Staves verschweißt. Mittels eines Kompensators 21 wird das Rohr nur mittelbar mit dem Hochofenpanzer verbunden und abgedichtet. Ein Rohr 22 dient als mechanischer Schutz.In contrast to this, according to the previously known solution, the connecting line is designed as a rigid connecting
Nach der Erfindung wird diese Festverrohrung durch ein flexibles Leitungsstück, insbesondere einen Wellschlauch, ersetzt. Festpunkte werden vermieden und damit der Aufbau von kritischen Spannungen bei der Wärmedehnung des Kühlelementes bzw. die daraus resultierenden Leckagen. Zudem ist die Montage schnell und einfach.According to the invention, this fixed piping is replaced by a flexible line piece, in particular a corrugated hose. Fixed points are avoided and thus the build-up of critical stresses during thermal expansion of the cooling element or the resulting leakages. Installation is also quick and easy.
- 11
- Kühlelementcooling element
- 22
- Grundkörper des KühlelementesBasic body of the cooling element
- 33
- vertikal verlaufende Sackbohrungvertical blind bore
- 44
- horizontal verlaufende Sackbohrunghorizontal blind bore
- 55
- Kühlkanalcooling channel
- 66
- Mündungsbereich des KühlkanalsMouth area of the cooling channel
- 77
- Außenseite des KühlelementesOutside of the cooling element
- 88th
- SchachtofenwandShaft furnace wall
- 99
- flexibles Leitungsstückflexible pipe section
- 1010
- Wellschlauch als flexibles LeitungsstückCorrugated hose as a flexible pipe section
- 1111
- Durchbruch in der SchachtofenwandBreakthrough in the shaft furnace wall
- 1212
- innerer Rohrstutzeninner pipe socket
- 1313
- äußerer Rohrstutzenouter pipe socket
- 1414
- Abdichtungshaubesealing boot
- 1515
- ein Ende der Abdichtungshaubeone end of the sealing hood
- 1616
- (kältere) Außenseite der Schachtofenwand(colder) outside of the shaft furnace wall
- 1717
- (wärmere) Innenseite der Schachtofenwand(warmer) inside of the shaft furnace wall
- 1818
- Schutzrohrthermowell
- 1919
- elastische Dichtungsmasseelastic sealant
- 2020
- starres Anschlussrohrrigid connection pipe
- 2121
- Kompensatorcompensator
- 2222
- Rohrpipe
Claims (9)
dadurch gekennzeichnet,
dass die Anschlussleitung ein flexibles Leitungsstück (9) ist.Connection line for a cooling element (1) for a shaft furnace, which has at least one channel (5) arranged in its interior, through which a coolant flows, the connection line connecting the connecting piece between the mouth region (6) of the coolant channel (5) assigned to it. and a pipe system is beyond the shaft furnace wall (8) and extends through an opening (11) in the shaft furnace wall (8),
characterized,
that the connecting line is a flexible line piece (9).
dadurch gekennzeichnet,
dass das flexible Leitungsstück (9) ein metallischer Wellschlauch (10) ist.Connection line according to claim 1,
characterized,
that the flexible line piece (9) is a metallic corrugated hose (10).
dadurch gekennzeichnet,
dass das flexible Leitungsstück (9) zumindest im Bereich des Durchbruchs (11), vorzugsweise über seine gesamte Länge, in einer elastischen Masse (19) eingebettet ist.Connection line according to claim 1 or 2,
characterized,
that the flexible line piece (9) is embedded in an elastic mass (19) at least in the area of the opening (11), preferably over its entire length.
dadurch gekennzeichnet,
dass der Teil des flexiblen Leitungsstücks (9), der sich jenseits der Schachtofenwand (8) befindet, mittels einer gasdichten Haube (14) abgedichtet ist, die, das flexible Leitungsstück (9) umgebend, sowohl mit diesem verbunden als auch an der Schachtofenwand (16) befestigt ist.Connection line according to one of claims 1 to 3,
characterized,
that the part of the flexible pipe section (9), which is located beyond the shaft furnace wall (8), is sealed by means of a gas-tight hood (14) which, surrounding the flexible pipe section (9), is both connected to it and on the shaft furnace wall ( 16) is attached.
dadurch gekennzeichnet,
dass der Teil des flexiblen Leitungsstücks (9), der sich diesseits der Schachtofenwand (8) befindet, mittels eines Schutzrohres (18) oder einer Manschette zwecks Schutz gegen mechanische Beschädigung umgeben ist.Connection line according to one of claims 1 to 4,
characterized,
that the part of the flexible line piece (9) which is located on this side of the shaft furnace wall (8) is surrounded by a protective tube (18) or a sleeve for the purpose of protection against mechanical damage.
dadurch gekennzeichnet,
dass der Ringraum zwischen dem flexiblen Leitungsstück (9) und dem Schutzrohr (18), dem Durchbruch (11) in der Schachtofenwand (8) sowie der Haube (14) mit der elastischen Dichtungsmasse (19) ausgefüllt ist.Connection line according to one of claims 3 to 5,
characterized,
that the annular space between the flexible line piece (9) and the protective tube (18), the opening (11) in the shaft furnace wall (8) and the hood (14) is filled with the elastic sealing compound (19).
dadurch gekennzeichnet,
dass das innere Ende des flexiblen Leitungsstücks (9) mit einem Rohrstutzen (12) verlängert ist, der in den Mündungsbereich (6) des Kühlmittelkanals (5) einsetzbar und dort zu befestigen ist.Connection line according to one of claims 1 to 6,
characterized,
that the inner end of the flexible line piece (9) is extended with a pipe socket (12) which can be inserted into the mouth region (6) of the coolant channel (5) and fastened there.
dadurch gekennzeichnet,
dass das äußere Ende des flexiblen Leitungsstücks (9) mit einem weiteren Rohrstutzen (13) als Kupplungselement mit dem Rohrsystem verlängert ist.Connection line according to one of claims 1 to 7,
characterized,
that the outer end of the flexible line piece (9) with another Pipe socket (13) is extended as a coupling element with the pipe system.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10244924 | 2002-09-25 | ||
| DE10244924A DE10244924A1 (en) | 2002-09-25 | 2002-09-25 | Connection line for a cooling element for a shaft furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1403603A1 true EP1403603A1 (en) | 2004-03-31 |
| EP1403603B1 EP1403603B1 (en) | 2006-05-24 |
Family
ID=31969619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP03016951A Expired - Lifetime EP1403603B1 (en) | 2002-09-25 | 2003-07-25 | Connecting element for cooling element of a shaft furnace |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1403603B1 (en) |
| AT (1) | ATE327491T1 (en) |
| DE (2) | DE10244924A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1466989A2 (en) * | 2003-04-10 | 2004-10-13 | KM Europa Metal Aktiengesellschaft | Cooling plate |
| US7712873B2 (en) | 2005-03-24 | 2010-05-11 | Brother Kogyo Kabushiki Kaisha | Inkjet head |
| CN110760635A (en) * | 2019-12-03 | 2020-02-07 | 山东钢铁集团日照有限公司 | Blast furnace cooling wall casing pipe gas plugging device and working method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2751912A1 (en) * | 1976-12-08 | 1978-06-15 | Wurth Anciens Ets Paul | COOLING DEVICE FOR SHAFT OVENS |
| DE10230511C1 (en) * | 2002-07-06 | 2003-08-14 | Alfred Liebig | Gas sealing unit for blast and shaft furnaces comprises a cooling tube made from a tubular support fixed to a cooling element and having a compensating section joined to the tubular support via a tool |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29608464U1 (en) * | 1996-05-10 | 1996-07-25 | Gutehoffnungshuette Man | Cooling segments for shaft furnaces |
-
2002
- 2002-09-25 DE DE10244924A patent/DE10244924A1/en not_active Withdrawn
-
2003
- 2003-07-25 DE DE50303449T patent/DE50303449D1/en not_active Expired - Fee Related
- 2003-07-25 EP EP03016951A patent/EP1403603B1/en not_active Expired - Lifetime
- 2003-07-25 AT AT03016951T patent/ATE327491T1/en not_active IP Right Cessation
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2751912A1 (en) * | 1976-12-08 | 1978-06-15 | Wurth Anciens Ets Paul | COOLING DEVICE FOR SHAFT OVENS |
| DE10230511C1 (en) * | 2002-07-06 | 2003-08-14 | Alfred Liebig | Gas sealing unit for blast and shaft furnaces comprises a cooling tube made from a tubular support fixed to a cooling element and having a compensating section joined to the tubular support via a tool |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1466989A2 (en) * | 2003-04-10 | 2004-10-13 | KM Europa Metal Aktiengesellschaft | Cooling plate |
| EP1466989A3 (en) * | 2003-04-10 | 2007-09-19 | KME Germany AG | Cooling plate |
| US7712873B2 (en) | 2005-03-24 | 2010-05-11 | Brother Kogyo Kabushiki Kaisha | Inkjet head |
| CN110760635A (en) * | 2019-12-03 | 2020-02-07 | 山东钢铁集团日照有限公司 | Blast furnace cooling wall casing pipe gas plugging device and working method |
Also Published As
| Publication number | Publication date |
|---|---|
| ATE327491T1 (en) | 2006-06-15 |
| DE50303449D1 (en) | 2006-06-29 |
| EP1403603B1 (en) | 2006-05-24 |
| DE10244924A1 (en) | 2004-04-08 |
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