EP1344838A2 - Kühlelement - Google Patents
Kühlelement Download PDFInfo
- Publication number
- EP1344838A2 EP1344838A2 EP03004701A EP03004701A EP1344838A2 EP 1344838 A2 EP1344838 A2 EP 1344838A2 EP 03004701 A EP03004701 A EP 03004701A EP 03004701 A EP03004701 A EP 03004701A EP 1344838 A2 EP1344838 A2 EP 1344838A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- cooling element
- grooves
- groove
- coolant channels
- element according
- 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.)
- Withdrawn
Links
Images
Classifications
-
- 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
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
- F27B3/10—Details, accessories, or equipment peculiar to hearth-type furnaces
- F27B3/24—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
- F27D2009/0045—Cooling of furnaces the cooling medium passing a block, e.g. metallic
- F27D2009/0048—Cooling of furnaces the cooling medium passing a block, e.g. metallic incorporating conduits for the medium
-
- 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
- F27D2009/0056—Use of high thermoconductive elements
- F27D2009/0062—Use of high thermoconductive elements made from copper or copper alloy
Definitions
- the invention relates to a cooling element as a replaceable component of an inner Cladding of an arc or shaft furnace.
- Cooling elements for shaft furnaces which are made of copper or a low one Alloyed copper alloy consist of a forged or rolled Raw block are made (DE 29 07 511 C1). Inside the cooling element are in the Use position vertical coolant channels arranged by mechanical Deep drilling are introduced. On the inside of a shaft furnace Side of the cooling element are horizontal grooves to fix the position of refractory material incorporated.
- the cooling element expands thermally, whereby the element side facing the furnace interior is at significantly higher temperatures is exposed as the rear element side.
- the temperature drops during or after the melting process the cooling element shrinks due to structural changes on the inside of the arc or Element side facing the shaft furnace stronger than on the outside Elements page. This leads to a curvature of the Cooling element that with increasing duration of use and the associated Temperature changes increase.
- An improved dimensional stability can be achieved in that the Element side facing inside of the arc furnace by means of towards on the coolant channels extending grid-like grooves in a plurality is divided by surface segments (DE 199 37 291 A1).
- the individual surface segments contract laterally during the cooling process, but they are Changes in length locally limited to the respective surface segment, so that Tensions do not affect neighboring surface segments and as a result
- the internal stresses and curvatures of the cooling elements are effectively reduced can be.
- this configuration of the cooling elements it can occur that the grooves clog up during operation with high-strength slag, so that when thermal alternating stress occurs, forces between can be transferred to the individual surface segments, from which ultimately one undesirable curvature of a cooling element can result.
- the invention is based on the object of being a cooling element interchangeable part of an inner lining of an arc or Shaft furnace to provide the improved properties with regard to its Has dimensional stability.
- a cooling element is made of copper or a low-alloy copper alloy crossed by coolant channels, the inside of an arc or Back of the cooling element facing away from the shaft furnace towards itself Grooves extending inside of these furnaces into a plurality of Surface segments is divided.
- the advantage of the grooves on the back of the To provide cooling element is that the grooves during operation can not clog with slag and thermal changes in length of the individual surface segments do not adversely affect neighboring ones Surface segments can be transferred.
- This configuration of the The cooling elements retain the functionality as intended for them Expansion joint over long service lives without the risk that the grooves become clogged or deformations due to internal stresses result.
- the grooves are essentially arranged in a grid.
- the grille can cover the entire back of a cooling element can be designed uniformly, in particular square or diamond-shaped surface elements particularly favorable in terms of production technology are realizable.
- the lattice-shaped arrangement of the grooves or the surface segments in some areas varied. For example, in areas with particularly high thermal stress more grooves or surface segments can be provided than in areas less thermal stress, in some areas due to this configuration to be able to take into account differing residual stresses.
- Grooves extending in the direction of the coolant channels are considered to be particularly advantageous extend (claim 2). Step in the area of the coolant channels the highest thermal fluctuations and thus also voltage fluctuations on, so that the thermally induced changes in length in these areas of the cooling element are largest.
- the central longitudinal axes of the coolant channels at least in sections in the central longitudinal plane of those assigned to them Grooves.
- the grooves are preferably perpendicular to the back of the cooling element introduced so that the central longitudinal planes of the grooves perpendicular to the back of the cooling element.
- the subject of claim 6 is that between the bottom of a groove and the back of the cooling element measured groove depth over the course of a groove varied. It is in principle possible for a groove to run over its entire course has a constant groove depth, however, due to different groove depths Fluctuations in the temperature profile within the cooling element and therefore also locally varying length changes are advantageously taken into account.
- a particularly effective weakening due to alternating thermal stress Bending moment generated in a cooling element is in a cooling element achieved with the features of claim 7. After that it is provided that the groove depth is greater than or equal to the smallest measured area Distance between the back of the cooling element and the the coolant channels surrounding walls.
- This embodiment of the inventive concept takes into account the fact that grooves, so to speak, between two Coolant channels are arranged, are only limited in their groove depths, when a coolant channel crosses the course of the groove.
- FIG. 1 shows a cooling element 1 made of copper or a low-alloy copper alloy.
- the cooling element 1 is shown in its interior by a broken line Coolant channels 2, 3, 4 passes through, on the rear 5 of the cooling element 1 for fluid-conducting coolant channels 2, 3 each Coolant inlet 6 and a coolant outlet 7 are arranged.
- the coolant channels 2, 3, 4 extend in the vertical direction in this exemplary embodiment and horizontal direction.
- the horizontal grooves 8 and vertical grooves 9 extend under recess of the coolant inlets 6 and the coolant outlets 7 over the entire back 5 of the cooling element 1 and structure the back 5 in a grid-like arrangement of surface segments 10.
- a groove 8, 9 is assigned to each coolant channel 2, 3, 4, the Coolant channels 2, 3, 4 each in the foot area 11 of the grooves 8, 9 assigned to them run.
- the central longitudinal axes LA of the coolant channels 2, 3, 4 are at least in sections in the central longitudinal plane MLE of the grooves assigned to them 8, 9.
- the central longitudinal planes MLE of the grooves 8, 9 are in this embodiment vertically on the rear side 5 of the cooling element 1.
- Figure 2 shows a horizontal cross section through the cooling element 1 of Figure 1. Es it is clear that the between the back 5 of the cooling element 1 and the groove bottom 14 measured groove depth T varies over the course of the groove 8.
- the groove depth T is dependent on the coolant channels running within the cooling element 1 2, 3, 4, which either extend in the direction of the groove 8 or their Cross course, as in this embodiment, the grooves 2 and 3. Since one Coolant channels 2, 3, 4 surrounding wall 15 must be present in any case, the groove depth T can only be greater in the areas than the smallest between the Back 5 of the cooling element 1 and the walls 15 measured distance, in which no coolant channels 2, 3, 4 run. This results in that in FIG. 2 exemplary illustrated course.
- a thermal insulation layer 17 may be arranged in certain areas, for example also can be formed by slag deposits.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Blast Furnaces (AREA)
Abstract
Description
- Figur 1
- ein Kühlelement in Blickrichtung auf ihre Rückseite und
- Figur 2
- einen Schnitt entlang der Linie II-II durch das Kühlelement der Figur 1.
- 1 -
- Kühlelement
- 2 -
- Kühlmittelkanal
- 3 -
- Kühlmittelkanal in 2
- 4 -
- Kühlmittelkanal in 2
- 5 -
- Rückseite v. 1
- 6 -
- Kühlmitteleinlaß
- 7 -
- Kühlmittelauslaß
- 8-
- Nut in 5
- 9-
- Nut in 5
- 10 -
- Flächensegment v. 5
- 11 -
- Fußbereich v. 8, 9
- 12 -
- Nut in 5
- 13 -
- Nut in 5
- 14 -
- Nutgrund
- 15 -
- Wandung v. 4
- 16 -
- Seite v. 1
- 17 -
- Wärmedämmschicht
- LA -
- Mittellängsachse v. 2, 3, 4
- MLE -
- Mittellängsebene v. 8, 9
- T-
- Nuttiefe
Claims (7)
- Kühlelement als austauschbarer Bestandteil einer inneren Verkleidung eines Lichtbogen- oder Schachtofens, welches aus Kupfer oder einer niedrig legierten Kupferlegierung besteht und von Kühlmittelkanälen (2, 3, 4) durchzogen ist, wobei die dem Inneren des Lichtbogen- oder Schachtofens abgewandte Rückseite (5) des Kühlelements (1) durch sich in Richtung zum Inneren des Lichtbogen- oder Schachtofens erstreckende Nuten (8, 9, 11, 13) in eine Mehrzahl von Flächensegmente (10) unterteilt ist.
- Kühlelement nach Anspruch 1, dadurch gekennzeichnet, daß sich die Nuten (8, 9) in Richtung der Kühlmittelkanäle (2, 3, 4) erstrecken.
- Kühlelement nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß jedem Kühlmittelkanal (2, 3, 4) eine Nut (8, 9) zugeordnet ist.
- Kühlelement nach Anspruch 3, dadurch gekennzeichnet, daß die Kühlmittelkanäle (2, 3, 4) im Fußbereich (11) der ihnen zugeordneten Nuten (8, 9) verlaufen.
- Kühlelement nach Anspruch 3 oder 4, dadurch gekennzeichnet, daß die Mittellängsachsen (LA) der Kühlmittelkanäle (2, 3, 4) zumindest abschnittsweise in der Mittellängsebene (MLE) der ihnen zugeordneten Nuten (8, 9) liegen.
- Kühlelement nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die zwischen dem Nutgrund (14) einer Nut (8) und der Rückseite (5) des Kühlelements (1) gemessene Nuttiefe (T) über den Verlauf einer Nut (8, 9, 13, 14) variiert.
- Kühlelement nach Anspruch 6, dadurch gekennzeichnet, daß die Nuttiefe (T) einer Nut (8, 9, 13, 14) bereichsweise größer oder gleich ist, als der kleinste zwischen der Rückseite (5) des Kühlelements (1) und den die Kühlmittelkanäle (2, 3, 4) umgebenden Wandungen (15) gemessene Abstand.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10210785 | 2002-03-12 | ||
DE10210785 | 2002-03-12 | ||
DE10219518A DE10219518A1 (de) | 2002-03-12 | 2002-04-30 | Kühlelement |
DE10219518 | 2002-04-30 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1344838A2 true EP1344838A2 (de) | 2003-09-17 |
EP1344838A3 EP1344838A3 (de) | 2008-01-23 |
Family
ID=27766697
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03004701A Withdrawn EP1344838A3 (de) | 2002-03-12 | 2003-03-04 | Kühlelement |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1344838A3 (de) |
JP (1) | JP2003269867A (de) |
CN (1) | CN100343395C (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2020196589A1 (ja) | 2019-03-27 | 2020-10-01 | Jfeスチール株式会社 | 高炉の炉壁冷却用ステーブ |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0012132A1 (de) * | 1978-12-01 | 1980-06-11 | Arbed S.A. | Metallische Kühlelemente für Industrieöfen |
DE2924991A1 (de) * | 1979-06-21 | 1981-01-15 | Lentjes Dampfkessel Ferd | Wassergekuehltes ofenwandelement |
EP0741190A1 (de) * | 1995-05-05 | 1996-11-06 | MAN Gutehoffnungshütte Aktiengesellschaft | Kühlplatten für Schachtöfen |
JP2001316709A (ja) * | 2000-05-01 | 2001-11-16 | Nippon Steel Corp | ステーブクーラ |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2493871A1 (fr) * | 1980-11-07 | 1982-05-14 | Usinor | Plaques de refroidissement pour hauts fourneaux |
FR2552105B1 (fr) * | 1983-09-21 | 1988-10-28 | Usinor | Perfectionnement aux plaques de refroidissement pour hauts-fourneaux |
DE19937291A1 (de) * | 1999-08-06 | 2001-02-15 | Km Europa Metal Ag | Kühlelement |
CN1190503C (zh) * | 2000-06-14 | 2005-02-23 | 鞍山钢铁集团公司 | 一种高炉冷却壁及制造工艺 |
CN2473215Y (zh) * | 2001-03-23 | 2002-01-23 | 包钢(集团)公司设计院 | 高炉铸钢复合冷却壁 |
JP2008023916A (ja) * | 2006-07-24 | 2008-02-07 | Kinsus Interconnect Technology Corp | 自動化製造過程におけるロール状フィルム体のパターン化方法 |
-
2003
- 2003-02-19 CN CNB031061362A patent/CN100343395C/zh not_active Expired - Fee Related
- 2003-02-28 JP JP2003053020A patent/JP2003269867A/ja active Pending
- 2003-03-04 EP EP03004701A patent/EP1344838A3/de not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0012132A1 (de) * | 1978-12-01 | 1980-06-11 | Arbed S.A. | Metallische Kühlelemente für Industrieöfen |
DE2924991A1 (de) * | 1979-06-21 | 1981-01-15 | Lentjes Dampfkessel Ferd | Wassergekuehltes ofenwandelement |
EP0741190A1 (de) * | 1995-05-05 | 1996-11-06 | MAN Gutehoffnungshütte Aktiengesellschaft | Kühlplatten für Schachtöfen |
JP2001316709A (ja) * | 2000-05-01 | 2001-11-16 | Nippon Steel Corp | ステーブクーラ |
Also Published As
Publication number | Publication date |
---|---|
CN100343395C (zh) | 2007-10-17 |
EP1344838A3 (de) | 2008-01-23 |
JP2003269867A (ja) | 2003-09-25 |
CN1444001A (zh) | 2003-09-24 |
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Legal Events
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---|---|---|---|
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17P | Request for examination filed |
Effective date: 20080430 |
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17Q | First examination report despatched |
Effective date: 20080804 |
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AKX | Designation fees paid |
Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR |
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RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: KME GERMANY AG & CO. KG |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
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18W | Application withdrawn |
Effective date: 20090117 |