WO2002097351A1 - Dispositif connecte a un element structurel thermiquement compense et application correspondante - Google Patents

Dispositif connecte a un element structurel thermiquement compense et application correspondante Download PDF

Info

Publication number
WO2002097351A1
WO2002097351A1 PCT/NO2002/000194 NO0200194W WO02097351A1 WO 2002097351 A1 WO2002097351 A1 WO 2002097351A1 NO 0200194 W NO0200194 W NO 0200194W WO 02097351 A1 WO02097351 A1 WO 02097351A1
Authority
WO
WIPO (PCT)
Prior art keywords
elements
accordance
connection
structural
vertical part
Prior art date
Application number
PCT/NO2002/000194
Other languages
English (en)
Inventor
Anders Ruud
Eystein Sandvik
Hogne Linga
Inge Holden
Arne Werge-Olsen
Original Assignee
Norsk Hydro Asa
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 Norsk Hydro Asa filed Critical Norsk Hydro Asa
Priority to DE60204884T priority Critical patent/DE60204884T2/de
Priority to CA2448640A priority patent/CA2448640C/fr
Priority to EP02738977A priority patent/EP1397632B1/fr
Priority to AT02738977T priority patent/ATE298874T1/de
Publication of WO2002097351A1 publication Critical patent/WO2002097351A1/fr

Links

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
    • F27D1/18—Door frames; Doors, lids, removable covers
    • F27D1/1808—Removable covers
    • 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
    • F27D1/0003—Linings or walls
    • F27D1/0023—Linings or walls comprising expansion joints or means to restrain expansion due to thermic flows

Definitions

  • the present invention concerns a thermally compensated structural element and its application.
  • the application of structural elements in accordance with the present invention is particularly advantageous as support for covers/lids for use in industrial processes.
  • An example may be in connection with furnaces for calcining of carbon bodies.
  • Such furnaces are usually created with a row of sections which can be closed at the top and which are also designed for the insertion of carbon bodies. Flue gas flows through the sections during the calcining process and so-called closed furnaces are equipped with section covers, which allows the operation of a closed process.
  • the carbon bodies remain stationary in their respective sections while the firing cycle is moved successively in relation to the sections, which means cyclical thermal loads on the sections and consequently also on their section covers.
  • Section covers exist for the above application in which an external, continuous, rigid frame of cast iron forms the bearing structure for an arch of one or more layers of refractory material i.e. bricks.
  • One disadvantage of this structure is that the expansion of the metal as a consequence of heating results in distortion and geometric changes, which results in the cover no longer lying in sealing contact with its base. Moreover, the cover may damage the brick work at the top of the section, which will result in increased maintenance.
  • One consequence of these factors will be that the process will no longer be closed in relation to the surroundings on account of leakages.
  • Figures 1a-b show drawings of a section of a structural element in accordance with the present invention, seen in perspective, partly from below in Fig. 1a and partly from above in Fig. 1b.
  • Figure 2 shows a section of a cover, seen in perspective, using structural elements in accordance with the present invention.
  • Figure 1 b shows a drawing of a section of a structural element 1 comprising an upper element 2 and one or more lower elements 3, 3', 3".
  • the upper element may consist of an angle section with 90° between a mainly horizontal part 15 and a mainly vertical part 16, which constitute the main parts of the section.
  • the element may also comprise a second vertical part 16' for further reinforcement.
  • the lower element 3 may be designed as an inverted T section with a base part 17 and a vertical part 18.
  • the upper element 2 and the lower element 3 are both connected to a first connection element 5, which, in the figure, consists of a plate with a relatively large cross-section.
  • the connection element 5 is permanently fixed, at its upper end, to the upper element 2 and, at its lower end, to the lower element 3.
  • connection element may also be permanently connected to the vertical parts 16, 16'.
  • Such connections preferably consist of welded connections.
  • the connection element is expediently mounted in the centre area between the ends of the lower element 3 and is also designed to support part of a vertical load which is transferred to the structural element 1 via a structural element 4.
  • a load may consist of parts of the weight supported by the structural element, but may also consist of vertical load in the opposite direction, for example in connection with lifting the structure.
  • the vertical part 16 of the upper element 2 is designed to lie against the base part 17 in the underlying T section so that vertical loads may be transferred between the upper element 2 and the lower element 3 along the full length of the structural element 1.
  • connection elements 6, 7, 8, 9, which consist of plates with a much smaller cross-section than the connection element 5.
  • the plates are permanently fixed, at their upper and lower ends, to the upper element 2 and the lower element 3 respectively.
  • the purpose of the plates is both to transfer forces between the upper element 2 and the lower element 3 and to compensate for mutual movements between the elements 2, 3 in their longitudinal direction.
  • the figure also shows torsion-stabilising elements 10, 11 , 12, 13, which are permanently connected, at their tops, to the upper element 2 and possibly also, in part of their vertical extent, to the vertical part(s) 16, 16'. At their lower ends, they are suspended above the base part 17 but have lateral contact with the vertical part 18 of the T section. In this way, a gap is formed between the vertical part 16 of the upper element 2 and the torsion-stabilising elements, which will allow mutual longitudinal changes between the upper element 2 and the lower element 3 and will also counteract mutual torsion and distortion between the elements.
  • the vertical part 18 of the T section may have through cutouts (not shown) in the area above where the torsion-stabilising elements are in contact with it. They may expediently be U-shaped without sharp corners which may initiate crack formation. The purpose of the cutouts is for the contact surface between the torsion-stabilising elements and the vertical part 18 to be reduced to allow greater elasticity in the connection between them.
  • Figure 1a shows through cutouts 20, 21 , 22, 23, 24, 25, 26, 27 which extend some way in from the side of the base part 17 in the lower element 3.
  • These cutouts may consist of slots.
  • the purpose of the cutouts is for thermally induced changes in length in the base part to be partially isolated to the parts between the cutouts, thus contributing to stabilisation of the T section in relation to torsion and distortion.
  • the upper element 2 is continuous throughout the section, while three lower elements 3, 3', 3" are shown in part with openings 30, 32 between them.
  • the purpose of this is to isolate longitudinal expansion in the lower part of the structural element 1 , which, when in contact with the top of a furnace chamber, will be most exposed to thermal load.
  • the size of the openings 30, 32 must, therefore, be dimensioned on the basis of knowledge of the relevant application so that the elements 3, 3', 3" may expand freely.
  • the upper element 2 may be equipped with holes 14 to ensure that ambient air flows through, which will contribute to cooling the structure.
  • the connection elements 5, 6, 7, 8, 9 will, when cooled, contribute to the lower element 3, which lies on the hot top of the furnace, being cooled advantageously.
  • the torsion-stabilising elements will also function as cooling ribs in the structural element 1.
  • the figure also shows part of brick work 19, which is designed to rest against the structural element 1. This will be described further under Figure 2.
  • Figure 2 shows a section of a cover 50, seen in perspective, using structural elements in accordance with the present invention.
  • the cover comprises an arch 51 , which may consist of one or more layers of refractory material.
  • the arch (only partially shown) is built inside a frame structure 53 and rests, at its lower ends, against two longitudinal side members 54, 55 in a base frame 69.
  • the cover also comprises two end walls. Only a section of one wall 56 is shown in the figure. Accordingly, the end walls rest against two cross members 57 (only one is shown in' the figure) which constitute part of the base frame.
  • the frame structure 53 may comprise fixings (not shown) for connection to a lifting device when the cover needs to be moved.
  • Both the longitudinal side members and the cross members may comprise structural elements 1 of the type mentioned above. All the members are designed to rest against a base, which may consist of the upper part of a furnace chamber for insertion of carbon bodies (not shown).
  • the figure shows that a leg 67 of the frame structure 53 is fixed at the centre of a lower element 60, equivalent to that shown in Figure 1. Accordingly, the other legs of the frame structure are fixed in the same way in the other lower elements 58, 59.
  • the upper element 61 extends continuously along the full length of the side member.
  • the stated lower elements 58, 59, 60 which thus constitute part of the longitudinal side member 54 in the base frame 69, are mounted so that a small opening is formed between them.
  • the reference 70 indicates the opening between the structural elements 60 and 59.
  • the figure shows a leg 68 which is fixed to a lower element 63 at its centre.
  • a principal element of the transverse end of the cover is the wall itself 56, which may consist of a steel plate.
  • the steel plate may constitute the equivalent vertical part to that indicated by reference 16 in Figure 1 b.
  • the torsion-stabilising elements may consist of small pieces of plate 71 which are welded onto the base part and the vertical part to reinforce the T section.
  • the cross member may also be designed using the same principles for thermal compensation as stated for structural element 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Resistance Heating (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Incineration Of Waste (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Furnace Details (AREA)
  • Cable Accessories (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)
  • Springs (AREA)

Abstract

L'invention concerne un élément structurel thermiquement compensé (1) comprenant un élément supérieur (2) et un élément inférieur (3). L'élément supérieur consiste en une section d'angle dotée d'une partie sensiblement horizontale (15) et une partie sensiblement verticale (16). L'élément inférieur (3) est conçu avec une partie de base (17) et une partie verticale (18). L'élément supérieur (2) et l'élément inférieur (3) sont tous deux connectés à des éléments de connexion (6, 7, 8, 9) de manière à compenser l'expansion/contraction induite thermiquement. La solution comprend, en outre, des caractéristiques qui contribuent à prévenir la distorsion de l'élément structurel. Les éléments structurels du type susmentionné peuvent être utilisés dans un cadre de base pour des couvercles qui sont utilisés dans des traitements thermiques tels que des couvercles de section s'utilisant dans des fours destinés à calciner des corps en carbone.
PCT/NO2002/000194 2001-06-01 2002-05-31 Dispositif connecte a un element structurel thermiquement compense et application correspondante WO2002097351A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE60204884T DE60204884T2 (de) 2001-06-01 2002-05-31 Wärmekompensiertes strukturelement für einen ofen
CA2448640A CA2448640C (fr) 2001-06-01 2002-05-31 Dispositif connecte a un element structurel thermiquement compense et application correspondante
EP02738977A EP1397632B1 (fr) 2001-06-01 2002-05-31 Element structurel thermiquement compense pour un four
AT02738977T ATE298874T1 (de) 2001-06-01 2002-05-31 Wärmekompensiertes strukturelement für einen ofen

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO20012741A NO314105B1 (no) 2001-06-01 2001-06-01 Anordning ved termisk kompensert konstruksjonselement samt anvendelse av samme i et lokk
NO20012741 2001-06-01

Publications (1)

Publication Number Publication Date
WO2002097351A1 true WO2002097351A1 (fr) 2002-12-05

Family

ID=19912521

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NO2002/000194 WO2002097351A1 (fr) 2001-06-01 2002-05-31 Dispositif connecte a un element structurel thermiquement compense et application correspondante

Country Status (6)

Country Link
EP (1) EP1397632B1 (fr)
AT (1) ATE298874T1 (fr)
CA (1) CA2448640C (fr)
DE (1) DE60204884T2 (fr)
NO (1) NO314105B1 (fr)
WO (1) WO2002097351A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2713766A1 (de) * 1977-03-29 1978-10-12 Guenter Ing Grad Kotzott Trag- oder verfahrbarer deckel fuer grubenglueh- und warmhalte-oefen in einer bei auftretenden waermedehnungen verzugsfreien bauweise
US5335897A (en) * 1983-01-10 1994-08-09 Coble Gary L Insulated furnace door system
US6058859A (en) * 1998-11-23 2000-05-09 Colosimo, Jr.; Samuel A. Refractory support device and associated method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2713766A1 (de) * 1977-03-29 1978-10-12 Guenter Ing Grad Kotzott Trag- oder verfahrbarer deckel fuer grubenglueh- und warmhalte-oefen in einer bei auftretenden waermedehnungen verzugsfreien bauweise
US5335897A (en) * 1983-01-10 1994-08-09 Coble Gary L Insulated furnace door system
US6058859A (en) * 1998-11-23 2000-05-09 Colosimo, Jr.; Samuel A. Refractory support device and associated method

Also Published As

Publication number Publication date
CA2448640A1 (fr) 2002-12-05
NO20012741D0 (no) 2001-06-01
EP1397632A1 (fr) 2004-03-17
NO314105B1 (no) 2003-01-27
DE60204884D1 (de) 2005-08-04
NO20012741L (no) 2002-12-02
DE60204884T2 (de) 2006-04-27
CA2448640C (fr) 2010-07-27
ATE298874T1 (de) 2005-07-15
EP1397632B1 (fr) 2005-06-29

Similar Documents

Publication Publication Date Title
KR100957916B1 (ko) 코크스 오븐의 박스테이 자동온도 조절및 변형 방지장치
US9403522B2 (en) Heater system media bed float sled and method of using the same
CA2632937A1 (fr) Procede et appareil permettant de supporter les parois d'une chaudiere a courant fort
US8245653B2 (en) Split shell circular furnace and binding systems for circular furnaces
KR900006698B1 (ko) 비철금속의 야금 처리용 탱크화로(tank furnace)
CA2448640C (fr) Dispositif connecte a un element structurel thermiquement compense et application correspondante
JP4920384B2 (ja) 室炉式コークス炉構造及び室炉式コークス炉の構築方法
US4580974A (en) Melting furnace cover
US4802844A (en) High capacity, retractable furnace hearth
US2930601A (en) Open-hearth furnace construction
US2468456A (en) Furnace muffle and supporting means therefor
US7726249B2 (en) Apparatus and method for isolating zones of an industrial furnace
KR101938583B1 (ko) 가열로용 대차
CA1119796A (fr) Couvercle pour fours d'egalisation et dispositifs analogues
US2524722A (en) Suspension arch
JPS6159183A (ja) 工業炉のための耐火性屋根要素、耐火性屋根要素からなる工業炉のための屋根ならびにそのような屋根を有する工業炉
JPH0221757Y2 (fr)
KR100833000B1 (ko) 열팽창에 의한 내화물 파손이 방지되는 래들
EP0786067B1 (fr) Dispositif d'isolation thermique
RU185323U1 (ru) Колосник
US2792795A (en) Partible soaking pit cover
KR200222927Y1 (ko) 슬라브 보열용 커버장치
US20070074644A1 (en) Support system for smelting-furnace exhaust-gas stack
CN213507094U (zh) 一种罩式炉的高强度外壳支撑结构
US20240133629A1 (en) Metallurgical furnace

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ OM PH PL PT RO RU SD SE SG SI SK SL TJ TM TN TR TT TZ UA UG US UZ VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
WWE Wipo information: entry into national phase

Ref document number: 2002738977

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 2448640

Country of ref document: CA

WWP Wipo information: published in national office

Ref document number: 2002738977

Country of ref document: EP

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

WWG Wipo information: grant in national office

Ref document number: 2002738977

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: JP

WWW Wipo information: withdrawn in national office

Country of ref document: JP