EP1153142B1 - Verfahren zum herstellen einer kühlplatte für einen ofen zur eisen- oder stahlerzeugung - Google Patents

Verfahren zum herstellen einer kühlplatte für einen ofen zur eisen- oder stahlerzeugung Download PDF

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Publication number
EP1153142B1
EP1153142B1 EP99958030A EP99958030A EP1153142B1 EP 1153142 B1 EP1153142 B1 EP 1153142B1 EP 99958030 A EP99958030 A EP 99958030A EP 99958030 A EP99958030 A EP 99958030A EP 1153142 B1 EP1153142 B1 EP 1153142B1
Authority
EP
European Patent Office
Prior art keywords
cooling
cooling plate
plate body
piece
duct
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
Application number
EP99958030A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1153142A1 (de
Inventor
Robert Schmeler
Marc Solvi
Roger Thill
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Paul Wurth SA
Original Assignee
Paul Wurth SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Paul Wurth SA filed Critical Paul Wurth SA
Publication of EP1153142A1 publication Critical patent/EP1153142A1/de
Application granted granted Critical
Publication of EP1153142B1 publication Critical patent/EP1153142B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/12—Elements constructed in the shape of a hollow panel, e.g. with channels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/26—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4935—Heat exchanger or boiler making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4935—Heat exchanger or boiler making
    • Y10T29/49364—Tube joined to flat sheet longitudinally, i.e., tube sheet

Definitions

  • the present invention relates to a cooling plate for a furnace for iron or steel production and a method for its production.
  • Such cooling plates are arranged on the inside of the furnace shell and have internal cooling channels. About connecting pieces, which protrude from their back, these cooling plates, outside the furnace shell, connected to a cooling system of the shaft furnace. Their surface facing the interior of the furnace is usually lined with a refractory material.
  • a cooling plate which is made of a forged or rolled copper block
  • the cooling channels are in this case blind holes which are introduced by mechanical deep drilling in the rolled copper block.
  • the blind holes are sealed by soldering or welding in threaded plugs.
  • connecting holes are drilled to the blind holes.
  • connecting piece for coolant flow, or coolant return are used in these connection holes and soldered or welded As a spacer pipe socket larger diameter are finally welded coaxially to the connecting piece on the back of the plate or soldered.
  • connection bores From the continuously molded preform a plate is cut out by two cuts transversely to the casting direction, wherein two end faces are formed, the distance of which corresponds to the desired length of the cooling plate.
  • connecting holes are drilled perpendicular to the back surface in the plate, and the end face Junctions of the channels closed.
  • connection bores then, as already described above, connecting pieces are used.
  • the present invention has for its object to provide a fluidically relatively favorable transition from the connecting piece to the cooling channels in copper cooling plates, without this case on molded cold-plate body or on cooling plate body with cast cooling tubes, with their aforementioned disadvantages, must be resorted to.
  • This object is achieved by a cooling plate according to claim 1, or solved by a cooling plate according to the method of claim 16.
  • the cold plate according to the invention comprises a copper cold plate body (ie, a copper or copper alloy cold plate body) having at least one cooling channel extending substantially parallel to the back of the cold plate. At least one port is located at the back of the carbon plate body and terminates in the cold plate body at least one cooling channel.
  • the cooling plate according to the invention comprises a shaped piece which is fitted in a prefabricated, accessible from the outside recess in the cooling plate body and, in Area of the junction of the connecting piece in the cooling channel, forming a deflection surface for the cooling medium Through this deflection, the entry of the cooling medium from connection piece in the cooling channel, or from the cooling channel in the connection piece can improve fluidically in an extremely simple manner.
  • the pressure losses in the cooling plate can be significantly reduced, which of course has a favorable effect on the energy consumption for the circulation of the cooling medium.
  • the risk of vapor bubble formation due to - high local pressure losses is also greatly reduced.
  • the inventive deflection surface further facilitates the escape of air during the filling of the cooling plates with the cooling medium.
  • the deflection surfaces according to the invention prevent air bags from forming in the cooling channels and causing so-called "hot spots".
  • the present invention with excellent residual data relating to the reduction of pressure losses, is applicable to cold plate bodies produced by the processes described in DE-A-2907511 and WO 98/30345. As a result, these cold plate body can also be used when low pressure drops are desired, which was not possible until now.
  • the fitting is arranged in the axial extension of the cooling channel, wherein the deflection surface is formed by one of its end surfaces.
  • the cooling channel formed for example by a channel having an opening in an end face of the cooling plate body
  • the molding is advantageously a plug which is inserted into this junction and extends to the mouth of the connecting piece in the cooling channel, where he the deflection for In order to improve the transition between connecting piece and the cooling channel fluidly substantially, it is sufficient that the deflection is formed by a tapered end of the fitting.
  • Flow-optimized deflection surfaces with a concave curvature naturally allow the local pressure loss to be further reduced.
  • the fitting can also be a prefabricated transition piece, for example a copper die casting, which is inserted into a correspondingly adapted recess in the cooling plate body, in which the cooling channel forms an opening, sealed to the outside.
  • This transition piece has an arcuate internal transition channel which forms a first and a second junction in the transition piece.
  • the first junction opens here in the connection piece.
  • the second junction lies in the cooling plate body opposite the junction of the cooling channel.
  • the arcuate transitional channel which may be cast in a casting, for example, forms a much cheaper transition from the connecting piece to the cooling channel, as a directly welded into a hole in the cooling plate body or soldered pipe socket.
  • transition connecting piece / cooling channel is always the same design by a standardized, prefabricated transition piece, so that the pressure losses in the individual cooling circuits are far easier to predict and tune.
  • transition pieces are preferable to direct welding or soldering of a connecting piece into a bore of the cooling plate body.
  • the reduction of the pressure loss through the transition piece according to the invention is particularly pronounced for cooling plate body with cooling channels which have an elongated cross-section.
  • the transition from the oblong cross section of the cooling channel to a circular cross section in the coolant connection is in fact progressively in the arcuate transitional passage of the transition piece, so that discontinuities in the flow pattern are avoided.
  • the transition piece advantageously has a solid attachment body, which forms a Abstandshöcker, which protrudes from the back of the cooling plate. With the mounted cooling plate, these attachment bodies simultaneously press a seal in the implementation of the connection piece in the furnace armor. Thus, it does not need an additional element to be welded or soldered to the connecting piece to the back of the cooling plate, so that the manufacturing process of the cooling plate is simplified. Furthermore, a relatively massive attachment body on the transition piece facilitates the mounting of the connecting piece.
  • the recess for the transition piece is advantageously milled from the rear into the copper cooling plate body, wherein the depth of the recess is smaller than the thickness of the cooling plate body In this embodiment, the furnace interior facing front of the cooling plate remains intact
  • the recess for the transition piece opens advantageously into an end face of the cooling plate body. As a result, it is easier to manufacture and the cooling channel can extend directly to the Stimende of the cooling plate body. To this embodiment of the invention is further noted that the transition piece closes the end of the cooling channel and seals. This eliminates the soldering or welding of plugs described in DE-A-2907511 and WO 98/30345 in the open-end cooling channels, so that a further step is saved.
  • the cooling plate body as described in DE-A-2907511, a forged or rolled copper block, wherein the cooling channels were produced by mechanical deep drilling as blind holes.
  • the copper cold plate body is continuously cast as described in WO 98/30345, the cooling channels being produced as continuous casting channels in the casting direction.
  • the production of such a cooling plate is particularly simple, yet it has much better mechanical and thermal properties than a molded copper cooling plate.
  • a cooling plate 10 for a shaft furnace in particular a blast furnace shown such cooling plates, also called “staves” are arranged on the inside of the furnace armor and connected to the cooling system of the furnace.
  • the rear side 11 of the cooling plate 10 shown in FIG. 1 lies opposite the furnace armor.
  • the illustrated cooling plate 10 consists essentially of a cooling plate body 12 made of copper or a copper alloy with a rectangular surface.
  • the cooling plate body 12 four straight cooling channels 14 are integrated, which are parallel to the surface, from an end face 16 to opposite end face 18, extend through the cooling plate body 12.
  • This cooling plate body 12 has advantageously been produced by the method described in the post-published patent application WO 98/30345.
  • a preform of the cooling plate body 12 was continuously cast in a continuous casting mold, wherein rod-shaped inserts in the pouring channel in the continuous casting direction produced channels that form the cooling channels 14.
  • the cross-section of the cast-in channels 14 has an elongated shape having its smallest extent perpendicular to the plate.
  • a plate was cut out by two cuts transversely to the casting direction, wherein the two end faces 16 and 18 of the cooling plate body 12 were formed. Subsequently, grooves 19 extending transversely to the longitudinal direction of the plate were milled into one of the two surfaces of the cooling plate body 12 (see FIG. 2). This surface with the milled grooves 19 forms the front side 25 of the cooling plate body 12, which faces the furnace interior.
  • the front side 25 of the cooling plate body 12 may be provided with a refractory material, wherein the grooves 19 ensure better adhesion of the refractory material.
  • each cooling channel 14 at each end each have a connecting piece 20, and 22, respectively. They are passed through the furnace armor outside the furnace, where they are connected to the terminal supports of an adjacent cooling plate, so that the cooling plate 10 is integrated into the cooling circuit of the furnace armor.
  • the connecting pieces 20 serve in this case, for example, as flow connections and the connecting pieces 22 as return connections of the cooling plate 10.
  • a transition piece 24 is shown, which is used according to the invention for this connection.
  • This is advantageously a casting of copper or a copper alloy. Since the thermal conductivity of the material made from the transition piece 24 For example, if no major role is played, a copper alloy that is well-suited for molding and has greater mechanical strength than the copper alloy of the cold plate body can be selected. The latter should in fact be characterized mainly by a good thermal conductivity.
  • the one-piece transition piece is composed of a prismatic base body 26, with two rounded edges 28, 30, and a cylindrical attachment body 32.
  • the connecting piece 22 is welded, soldered, screwed or mitvergossen at the same time in a bore in the attachment body 32 and protrudes vertically from the free surface 33 of this attachment body 32.
  • the inner diameter of this bore corresponds substantially to the outer diameter of the connecting piece 22.
  • an arcuate transition channel 34 is cast.
  • the latter forms in the attachment body 32 an opening 36 in the connecting piece 22, which has substantially the same circular free cross-section as the connecting piece 22
  • a second junction 38 of the transition channel 34 is disposed in a side surface 40 of the prismatic base body 26.
  • This second junction 38 has substantially the same elongated cross section as the cooling channels 14 in the cooling plate body.
  • the cast transition channel 34 is in this case designed such that the transition from the elongated to the circular cross-section is progressive, ie without significant discontinuities, which would generate local vortex and thus pressure losses in the flowing cooling medium.
  • each of the recesses opens laterally into the respective end face 16, 18 of the cooling plate body 12, wherein the depth of the recesses is smaller than the thickness of the cooling plate body 12, so that the front of the Cold plate body 12 remains intact with its milled grooves 19 (see also Figure 4).
  • the second junction 38 of the transition channel 34 in the casting 24 is located in this recess exactly opposite the junction of the cooling channel 14 in this recess.
  • the remaining gap between the cooling plate body and the base body 26 inserted into the recess is welded or soldered all around the surface, so that no cooling medium can escape through this gap. From Figures 2 and 4 it can be seen that this seam has a relatively simple course, so that it is readily carried out by machine.
  • the attachment bodies 32 protrude from the cooling plate body 12 as pressure humps, which press a seal into the feedthrough of the connection pieces in the furnace shell when the cooling plate is mounted.
  • arcuate transition channel 34 forms, as already mentioned, a fluidically much cheaper transition from the connecting piece 20, 22 on the cooling channel 14, as a welded directly into a hole in the cooling plate body or soldered pipe socket.
  • the pressure losses in the cooling plate 10 are thus substantially reduced, which of course has a favorable effect on the energy consumption for the circulation of the cooling medium. Furthermore, the risk of a, caused by high local pressure losses, vapor bubble formation at the transition cooling channel / connecting piece is greatly reduced.
  • the cooling plate 10 according to the invention also has the advantage that the transition from the connecting piece 20, 22 to the cooling channel 14 by a standardized mold casting 24 is always the same design, so that the pressure losses in the individual cooling circuits are far easier to predict and tune.
  • the solution according to the invention is also preferable to a direct welding or soldering of a connecting piece into a bore of the cooling plate body.
  • the massive attachment body, in which the connecting piece 20, 22 is used contributes to this not insignificantly.
  • thedeplätten oder a cooling plate according to the invention could also be prepared by the method described in DE-A-2907511 with blind holes.
  • the production method described above by continuous casting is much simpler and therefore preferable.
  • the cross-section of the cast-in channels may have an elongate shape that has their smallest extension perpendicular to the cooling plate. This allows the continuous-cast cooling plates to be made smaller in plate thickness than cooling plates with drilled channels, thereby conserving copper and increasing the usable volume of the furnace.
  • the present invention advantageously reduces the higher pressure losses that occur during the transition to the connecting pieces 20, 22, with a circular free cross section.
  • FIG. 6 A simplified embodiment of the transition region between connecting piece 20 and cooling channel 14 according to the invention is shown in FIG.
  • the connecting piece is inserted directly into the cooling plate body 12 and welded thereto.
  • a shaped piece 124 which is inserted in the axial extension of the cooling channel 14 in a recess 126 of the cooling plate body 12, forms in the region of the junction of the connection piece 20 in the cooling channel 14, a deflection surface 134 for the cooling medium.
  • the shaped piece 124 is, for example, a plug which is inserted into the frontal opening of the cooling channel 14 and extends into the cooling channel 14 as far as the mouth of the connecting piece 20.
  • the deflection surface 134 for the cooling medium is formed by the end face of its 45 ° bevelled end 128.
  • the cross-section of the channel 14 is slightly enlarged above the junction of the connection piece 20 in comparison to the cross-section of the actual cooling channel 14.
  • a scraper surface 130 is formed in the channel 14, against which a corresponding shoulder surface 132 of the plug 124 abuts. so that the deflection surface 134 is positioned just below the junction of the connecting piece 20 in the cooling channel 14.
  • cooling channel 14 and the plug 124 have an oblong cross section. Of course, however, both could also have a circular cross-section.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Blast Furnaces (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
EP99958030A 1998-12-16 1999-11-12 Verfahren zum herstellen einer kühlplatte für einen ofen zur eisen- oder stahlerzeugung Expired - Lifetime EP1153142B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
LU90328A LU90328B1 (de) 1998-12-16 1998-12-16 Kuehlplatte fuer einen Ofen zur Eisen- oder Stahlerzeugung
LU90328 1998-12-16
PCT/EP1999/008735 WO2000036154A1 (de) 1998-12-16 1999-11-12 Kühlplatte für einen ofen zur eisen- oder stahlerzeugung

Publications (2)

Publication Number Publication Date
EP1153142A1 EP1153142A1 (de) 2001-11-14
EP1153142B1 true EP1153142B1 (de) 2006-01-04

Family

ID=19731789

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99958030A Expired - Lifetime EP1153142B1 (de) 1998-12-16 1999-11-12 Verfahren zum herstellen einer kühlplatte für einen ofen zur eisen- oder stahlerzeugung

Country Status (13)

Country Link
US (2) US7549463B1 (pt)
EP (1) EP1153142B1 (pt)
JP (1) JP2002532673A (pt)
KR (1) KR100596911B1 (pt)
CN (1) CN1291043C (pt)
AT (1) ATE315109T1 (pt)
AU (1) AU1552900A (pt)
BR (1) BR9917043A (pt)
CZ (1) CZ20012076A3 (pt)
DE (1) DE59913026D1 (pt)
LU (1) LU90328B1 (pt)
TW (1) TW434320B (pt)
WO (1) WO2000036154A1 (pt)

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RU2494325C2 (ru) * 2011-07-01 2013-09-27 Открытое акционерное общество "Научно-исследовательский институт металлургической теплотехники" (ОАО "ВНИИМТ") Кессон медный металлургической печи
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LU100107B1 (en) * 2017-02-22 2018-10-02 Wurth Paul Sa Cooling Panel for Metallurgical Furnace
CN107062963B (zh) * 2017-04-27 2019-06-07 厦门大学 一种用于毛细泵环的交错式微通道冷凝器
CN108195121A (zh) * 2018-03-02 2018-06-22 中山市新顺翔电器制造有限公司 一种冰箱压缩机的底盘
EP3540081B1 (en) * 2018-03-15 2022-09-21 Primetals Technologies Limited Stave protection system
KR102227985B1 (ko) * 2019-03-20 2021-03-16 주식회사 포스코 전기로용 냉각패널 및 이를 포함하는 전기로
CA3137497A1 (en) * 2019-05-09 2020-11-12 Carlo Lorenzo GERONIMI Multi-channeled cooled panel for blast furnaces and other industrial furnaces
CN110812874B (zh) * 2019-11-28 2021-08-06 耒阳金悦科技发展有限公司 一种反应溶剂快速冷却回收装置
EP3839075A1 (en) * 2019-12-18 2021-06-23 Paul Wurth S.A. Cooling plate for a metallurgical furnace
CN111197114B (zh) * 2020-03-11 2024-02-06 广西柳州钢铁集团有限公司 高炉冷却壁
IT202100021518A1 (it) * 2021-08-09 2023-02-09 Ariston S P A Circuito integrato per la circolazione di fluidi frigorigeni per pompe di calore ad assorbimento a gas
CN113839121A (zh) * 2021-09-22 2021-12-24 东风时代(武汉)电池系统有限公司 一种冷却板及电池组件
JP7559781B2 (ja) 2022-02-07 2024-10-02 Ｊｆｅスチール株式会社 クーリングステーブおよびそれを用いた高炉

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Also Published As

Publication number Publication date
ATE315109T1 (de) 2006-02-15
US20090205543A1 (en) 2009-08-20
JP2002532673A (ja) 2002-10-02
DE59913026D1 (de) 2006-03-30
BR9917043A (pt) 2002-01-08
US7549463B1 (en) 2009-06-23
CZ20012076A3 (cs) 2001-09-12
KR20010101219A (ko) 2001-11-14
TW434320B (en) 2001-05-16
LU90328B1 (de) 2003-06-26
EP1153142A1 (de) 2001-11-14
KR100596911B1 (ko) 2006-07-04
CN1330722A (zh) 2002-01-09
WO2000036154A1 (de) 2000-06-22
CN1291043C (zh) 2006-12-20
AU1552900A (en) 2000-07-03

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