EP1403603B1 - Connecting element for cooling element of a shaft furnace - Google Patents
Connecting element for cooling element of a shaft furnace Download PDFInfo
- Publication number
- EP1403603B1 EP1403603B1 EP03016951A EP03016951A EP1403603B1 EP 1403603 B1 EP1403603 B1 EP 1403603B1 EP 03016951 A EP03016951 A EP 03016951A EP 03016951 A EP03016951 A EP 03016951A EP 1403603 B1 EP1403603 B1 EP 1403603B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- connecting line
- shaft furnace
- corrugated hose
- pipe
- metallic corrugated
- 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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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
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- 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
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- 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 system for a cooling element for a shaft furnace, in particular for a blast furnace having at least one channel arranged in its interior, which flows through a coolant, wherein the connecting line between the associated mouth region of the coolant channel and a pipe system beyond the Shaft furnace wall is and extends through a breakthrough in the shaft furnace wall.
- the invention relates to a cooling element.
- the so-called staves are used, which are acted upon with coolant, usually water.
- coolant usually water.
- a fixed connection line and a separate compensator for compensating the thermal expansion between Ofenausmautation and furnace shell is from STEEL AND IRON, no. 5, May 1986 (1986 - 05), pages 205-210 known.
- the achieved due to the compensators freedom of movement is not enough.
- the freedom of movement of the connection pipes by other not directly influenceable criteria such as the clogging of compensators by deposits from the furnace interior, increasingly limited.
- the invention has for its object to provide a solution for a connection line system of a cooling element, in particular a stave, which ensures the greatest possible avoidance of Zwangsus between the connecting line or the coolant-promoting components and the blast furnace shell.
- the costs for the realization of the previous framework for the known connection cables or - pipes should not significantly exceed.
- connection piece or the connection line between the cooling channel and the coolant treatment system is not to form the connection piece or the connection line between the cooling channel and the coolant treatment system as a rigid pipe connection but as a flexible line piece, in particular as a metal corrugated hose.
- This line piece is flexible in its shape and nature and remains flexible during use in the installed state.
- the compensator is omitted as a component of the known solution with rigid connection pipes and a rigid pipe is replaced by a metallic corrugated hose, there is an overall cost reduction by reducing the number of necessary components.
- the metallic corrugated hose can be installed easy to install.
- the metallic corrugated hose consists in particular of a heat-resistant metallic material, for example of a heat-resistant stainless steel with a helical corrugation. This combines the properties of flexibility or elasticity with a heat resistance.
- the metallic corrugated hose is preferably embedded in an elastic mass. This ensures a flexible seal against unintentional deposits of kiln dust or abrasion of backfills on the pipe section.
- a gas-tight seal of the part of the metallic corrugated tube which extends beyond, i. outside, the shaft furnace wall, hereinafter concretized as blast furnace shell, is carried out by means of a hood. It is gas-tight welded to the outside of the blast furnace shell.
- the portion of the metallic corrugated hose that extends between the (cold) outside of the cooling element and the inside of the blast furnace shell is surrounded by a protective tube for protection against mechanical damage.
- a pipe piece in the sense of a coupling element is arranged at the inner end of the metallic corrugated hose. This is shaped so that it fits exactly into the mouth area of the coolant channel. From the outside then a welding of the pipe section takes place with the back of the cooling element.
- the connection can also be achieved by a flange or screw with a corresponding thread or by a plug connection.
- the coupling element may be formed from the corrugated hose itself or attached to the end.
- a piece of pipe is also arranged. This is used for connection to the pipes of the pipe system of the blast furnace. Due to the inner and outer tube piece of the metallic corrugated hose, quick and easy assembly is possible.
- the assembly of the metallic corrugated hose to the cooling element can be done far from the construction site in workshops or the blast furnace itself.
- cooling elements equipped with connection lines according to the invention are then provided at the blast furnace. It is also possible to retrofit already installed cooling elements with originally rigid connection lines with the proposed metallic corrugated hose.
- Fig. 1 shows schematically the upper part of a cooling element 1.
- This cooling element may be made of 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-in channels, which are closed with covers welded on the back. It can also be stavelets.
- vertically extending blind holes 3 are introduced by deep drilling in the body of the cooling element, which pass into horizontally extending blind holes 4, wherein the vertical and the two horizontal blind holes form the cooling channel 5.
- the horizontally extending blind holes 4 are not like the vertical blind holes 3 closed at the edge, but form mouth areas 6 to the outside. 7 of the stave. If in this context is spoken of vertical blind holes, then they should be parallel to the longitudinal extent of the stave in the unassembled state.
- the staves are mounted along the shaft furnace wall 8, hereinafter referred to as blast furnace shell. The course of the cooling channels 5 then corresponds to the orientation of the blast furnace shell.
- Such staves are traversed by coolant, usually water, which is transported by a pipe system (not shown) arranged outside the blast furnace shell and transported away again.
- coolant usually water
- the corrugated tube 10 is flexibly supported and extends without further contact points through the opening 11 or the opening in the blast furnace shell.
- To lock the corrugated hose 10 each end a pipe socket 12, 13 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 connection element to the pipe system (not shown) for the 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 at its other end 15 on the outside 16 of the blast furnace shell and the gas-tight seal to the blast furnace shell takes over.
- a protective tube 18 and a sleeve is arranged between the stave and inside 17 of the blast furnace armor.
- the corrugated tube 10 itself is embedded over its entire length in an elastic sealant that keeps the tube 10 tight and free of deposits and above all does not affect its flexibility. Due to the flexible or elastic corrugated tube 10 and the elastic sealant between the corrugated hose and the annulus of the aperture 11 of the blast furnace shell is achieved that no fixed points arise in the connector. Danger points for possible leaks are prevented.
- the connecting line is designed as a rigid connecting tube 20, as shown in FIG. 2.
- the Fig. 1 corresponding components are provided with the same reference numerals.
- the connecting tube is welded rigidly in the mouth region 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 with the blast furnace shell.
- a tube 22 serves as a mechanical protection.
- this hard casing is replaced by a flexible pipe section, in particular a corrugated hose. Fixed points are avoided and thus the build-up of critical stresses in the thermal expansion of the cooling element or the resulting leaks. In addition, the assembly is quick and easy.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Metallurgy (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Organic Chemistry (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Blast Furnaces (AREA)
- Heat Treatment Of Articles (AREA)
- Furnace Details (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
Description
Die Erfindung betrifft eine Anschlussleitungssystem für ein Kühlelement für einen Schachtofen, insbesondere für einen Hochofen, das mindestens einen in seinem Inneren angeordneten Kanal, der von einem Kühlmittel durchström 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 system for a cooling element for a shaft furnace, in particular for a blast furnace having at least one channel arranged in its interior, which flows through a coolant, wherein the connecting line between the associated mouth region of the coolant channel and a pipe system beyond the Shaft furnace wall is and extends through a breakthrough in the shaft furnace wall. In addition, the invention 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.To protect the wall of shaft kilns and the blast furnace in blast furnaces against the temperatures prevailing inside the furnace cooling elements, for example, the so-called staves, are used, which are acted upon with coolant, usually water. As a connecting piece between the respective cooling channel and the pipe system, which is usually connected to a treatment system for the coolant, in conventional staves rigid cooling pipe connections with corresponding pipe sockets at the mouth region, i. at the entrance or exit area of the coolant channel, welded. Due to the operating stress of the cooling elements may cause thermal expansion. Since the rigid connecting pipes or supply and discharge pipes are connected via direct or indirect, i. fixed unintentional fixed points on the tank, these thermal stresses can lead to 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.In order to prevent these defects, expansion joints are placed between the blast furnace shell and the fixed pipes welded in the stave. This ensures a limited relative movement between the blast furnace shell and the cooling element. Such compensators are known for example from DE 296 08 464 U1.
Eine feste Anschlussleitung und ein separater Kompensator zur Kompensation der thermischen Ausdehnung zwischen Ofenausmauerung und Ofenpanzer ist aus STAHL UND EISEN, Nr. 5, Mai 1986 (1986 - 05), Seiten 205 - 210 bekannt.A fixed connection line and a separate compensator for compensating the thermal expansion between Ofenausmauerung and furnace shell is from STEEL AND IRON, no. 5, May 1986 (1986 - 05), pages 205-210 known.
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, given by the Ofenfahrweise conditions, the achieved due to the compensators freedom of movement is not enough. In addition, the freedom of movement of the connection pipes by other not directly influenceable criteria, such as the clogging of compensators by deposits from the furnace interior, increasingly limited.
Der Erfindung liegt die Aufgabe zugrunde, eine Lösung für eine Anschlussleitungssystem 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 connection line system of a cooling element, in particular a stave, which ensures the greatest possible avoidance of Zwangspunkte between the connecting line or the coolant-promoting components and the blast furnace shell. The costs for the realization of the previous framework for the known connection cables or - pipes should not significantly exceed.
Diese Aufgabe wird mittels eines Anschlussleitungssystems mit den Merkmalen des Anspruchs 1 sowie mittels eines Kühlelementes mit den Merkmalen des AnAnspruchs 8 gelöst. Vorteilhafte Weiterbildungen sind in den Unteransprüchen enthalten.This object is achieved by means of a connection line system 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, insbesondere als metallischer Wellschlauch, auszubilden.The core idea of the invention is not to form the connection piece or the connection line between the cooling channel and the coolant treatment system as a rigid pipe connection but as a flexible line piece, in particular as a metal corrugated hose.
Dieses Leitungsstück ist von seiner Form und Art heraus in sich flexibel und bleibt auch während des Einsatzes im eingebauten Zustand flexibel.This line piece is flexible in its shape and nature and remains flexible 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 einen metallischen Wellschlauch ersetzt werden, kommt es zu keinerlei Veränderungen der Wärmeabfuhrleistung des Kühlelementes.In this way, fixed points of any kind of connecting line to the blast furnace shell are completely avoided. Since only the leads, i. the supply and discharge pipes are replaced by a metallic corrugated hose, there is no change in the heat dissipation of the cooling element.
Da der Kompensator als Bauteil der bekannten Lösung mit starren Anschlussrohren wegfällt und ein starres Rohr durch einen metallischen Wellschlauch ersetzt wird, kommt es insgesamt zu einer Kostensenkung durch Verringerung der Anzahl der notwendigen Bauteile.Since the compensator is omitted as a component of the known solution with rigid connection pipes and a rigid pipe is replaced by a metallic corrugated hose, there is an overall cost reduction by reducing the number of necessary components.
Zudem kann der metallische Wellschlauch montagefreundlich installiert werden.In addition, the metallic corrugated hose can be installed easy to install.
Der metallische Wellschlauch besteht insbesondere aus einem hitzebeständigen metallischen Material, beispielsweise aus einem hitzebeständigen Edelstahl mit einer Wendelwellung. Dieser verbindet die Eigenschaften der Flexibilität bzw. Elastizität mit einer Hitzebeständigkeit.The metallic corrugated hose consists in particular of a heat-resistant metallic material, for example of a heat-resistant stainless steel with a helical corrugation. This combines the properties of flexibility or elasticity with a heat resistance.
Der metallische Wellschlauch 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 metallic corrugated hose is preferably embedded in an elastic mass. This ensures a flexible seal against unintentional deposits of kiln dust or abrasion of backfills on the pipe section.
Eine gasdichte Abdichtung des Teils des metallischen Wellschlauches, 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 metallic corrugated tube which extends beyond, i. outside, the shaft furnace wall, hereinafter concretized as blast furnace shell, is carried out by means of a hood. It is gas-tight welded to the outside of the blast furnace shell.
Der Teil des metallischen Wellschlauches, der sich zwischen der (kalten) Außenseite des Kühlelementes und der Innenseite des Hochofenpanzers erstreckt, ist mittels eines Schutzrohres zwecks Schutzes gegen mechanische Beschädigung umgeben.The portion of the metallic corrugated hose that extends between the (cold) outside of the cooling element and the inside of the blast furnace shell is surrounded by a protective tube for protection against mechanical damage.
Der sich dann zwischen dem metallischen Wellschlauch und dem Schutzrohr, dem Durchbruch in dem Hochofenpanzer sowie der Haube ergebende Ringraum wird mit der elastischen Dichtungsmasse bzw. -packung aufgefüllt, die den metallischen Wellschlauch während des Einsatzes elastisch lagert und umgibt.The then resulting between the metallic corrugated tube and the protective tube, the breakthrough in the blast furnace shell and the hood resulting annular space is filled with the elastic sealant or -packung, which elastically supports the metallic corrugated hose during use and surrounds.
Zur schnellen und dichten Verbindung in den Mündungsbereichen des Kühlmittelkanals ist an dem inneren Ende des metallischen Wellschlauches 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 quick and tight connection in the mouth areas of the coolant channel, a pipe piece in the sense of a coupling element is arranged at the inner end of the metallic corrugated hose. This is shaped so that it fits exactly into the mouth area of the coolant channel. From the outside then a welding of the pipe section takes place with the back of the cooling element. The connection can also be achieved by a flange or screw with a corresponding thread or by a plug connection. The coupling element may be formed from the corrugated hose itself or attached to the end.
Am anderen Ende des metallischen Wellschlauches, 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 äu-βeren Rohrstücks des metallischen Wellschlauches ist eine schnelle und einfache Montage möglich.At the other end of the metallic corrugated tube, which lies beyond the blast furnace shell, a piece of pipe is also arranged. This is used for connection to the pipes of the pipe system of the blast furnace. Due to the inner and outer tube piece of the metallic corrugated hose, quick and easy assembly is possible.
Die Montage des metallischen Wellschlauches 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 metallischem Wellschlauch umzurüsten.The assembly of the metallic corrugated hose to the cooling element can be done far from the construction site in workshops or the blast furnace itself. In the first case, cooling elements equipped with connection lines according to the invention are then provided at the blast furnace. It is also possible to retrofit already installed cooling elements with originally rigid connection lines with the proposed metallic corrugated hose.
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 a portion of the cooling element with a connecting line of a flexible line piece according to the invention;
- Fig. 2
- a sectional view of a portion of the cooling element with a connecting line of 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.Fig. 1 shows schematically 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 - is not limited thereto.
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 vertically extending
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 traversed by coolant, usually water, which is transported by a pipe system (not shown) arranged outside the blast furnace shell and transported away again.
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 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 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, 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 hard casing is replaced by a flexible pipe section, in particular a corrugated hose. Fixed points are avoided and thus the build-up of critical stresses in the thermal expansion of the cooling element or the resulting leaks. In addition, the assembly is quick and easy.
- 11
- Kühlelementcooling element
- 22
- Grundkörper des KühlelementesBasic body of the cooling element
- 33
- vertikal verlaufende Sackbohrungvertical blind hole
- 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 the shaft furnace wall
- 1818
- Schutzrohrthermowell
- 2020
- starres Anschlussrohrrigid connection pipe
- 2121
- Kompensatorcompensator
- 2222
- Rohrpipe
Claims (8)
- Connecting line system for a cooting element (1) for a shaft furnace, which cooling element has at least one internally disposed duct (5) which can be flowed through by a coolant, the connecting line being the connection piece between the thereto assigned mouth region (6) of the coolant duct (5) and a pipe system on the far side of the shaft furnace wall (8) and extending through an aperture (11) in the shaft furnace wall (8), characterized in that the connecting line is a flexible line section (9), in particular a metallic corrugated hose (10).
- Connecting line system according to Claim 1, characterized in that the metallic corrugated hose (10), at least in the region of the aperture (11), is embedded, preferably over the whole of its length, in an elastic compound (19).
- Connecting line system according to Claim 1 or 2, characterized in that that part of the metallic corrugated hose (10) which is located on the far side of the shaft furnace wall (8) is sealed by means of a gastight hood (14), which, surrounding the metallic corrugated hose (10), is both connected to the latter and is fastened to the shaft furnace wall (16).
- Connecting line system according to one of Claims 1 to 3, characterized in that that part of the metallic corrugated hose (10) which is located on the near side of the shaft furnace wall (8) is surrounded by means of a protective pipe (18) or a sleeve for protection from mechanical damage.
- Connecting line system according to one of Claims 2 to 4, characterized in that the annular space between the metallic corrugated hose (10) and the protective pipe (18), the aperture (11) in the shaft furnace wall (8) and the hood (14) is filled with the elastic sealing compound (19).
- Connecting line system according to one of Claims 1 to 5, characterized in that the inner end of the metallic corrugated hose (10) is extended by a pipe socket (12), which can be inserted into the mouth region (6) of the coolant duct (5) and can be fastened there.
- Connecting line system according to one of Claims 1 to 6, characterized in that the outer end of the metallic corrugated hose (10) is extended by a further pipe socket (13) as a coupling element for coupling to the pipe system.
- Cooling element (1) for a shaft furnace, having at least one internally disposed duct (5) which can be flowed through by a coolant and having a connecting line according to one of Claims 1 to 7 for connecting the coolant duct to a 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 EP1403603A1 (en) | 2004-03-31 |
| EP1403603B1 true 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) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10316367A1 (en) * | 2003-04-10 | 2004-10-28 | Km Europa Metal Ag | cooling plate |
| JP4475153B2 (en) | 2005-03-24 | 2010-06-09 | ブラザー工業株式会社 | 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 (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29608464U1 (en) * | 1996-05-10 | 1996-07-25 | Gutehoffnungshuette Man | Cooling segments for shaft furnaces |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| LU76349A1 (en) * | 1976-12-08 | 1977-06-09 | ||
| 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 |
-
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 AT AT03016951T patent/ATE327491T1/en not_active IP Right Cessation
- 2003-07-25 EP EP03016951A patent/EP1403603B1/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29608464U1 (en) * | 1996-05-10 | 1996-07-25 | Gutehoffnungshuette Man | Cooling segments for shaft furnaces |
Non-Patent Citations (1)
| Title |
|---|
| STAHL UND EISEN, no. 5, May 1986 (1986-05-01), pages 205 - 210 * |
Also Published As
| Publication number | Publication date |
|---|---|
| ATE327491T1 (en) | 2006-06-15 |
| EP1403603A1 (en) | 2004-03-31 |
| DE50303449D1 (en) | 2006-06-29 |
| DE10244924A1 (en) | 2004-04-08 |
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