EP0089398A1 - Poutre de voûte pour un four de traitement thermique - Google Patents

Poutre de voûte pour un four de traitement thermique Download PDF

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Publication number
EP0089398A1
EP0089398A1 EP82102456A EP82102456A EP0089398A1 EP 0089398 A1 EP0089398 A1 EP 0089398A1 EP 82102456 A EP82102456 A EP 82102456A EP 82102456 A EP82102456 A EP 82102456A EP 0089398 A1 EP0089398 A1 EP 0089398A1
Authority
EP
European Patent Office
Prior art keywords
ceiling
heating furnace
ceiling beam
beam construction
construction
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP82102456A
Other languages
German (de)
English (en)
Other versions
EP0089398B1 (fr
Inventor
Tetsuya Tokitsu
Saburo Harada
Jiro Yamasaki
Akihiro Nakama
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.)
Chugai Ro Co Ltd
Nippon Steel Corp
Original Assignee
Chugai Ro Co Ltd
Nippon Steel Corp
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 Chugai Ro Co Ltd, Nippon Steel Corp filed Critical Chugai Ro Co Ltd
Priority to DE8282102456T priority Critical patent/DE3274576D1/de
Priority to AT82102456T priority patent/ATE24044T1/de
Priority to EP82102456A priority patent/EP0089398B1/fr
Publication of EP0089398A1 publication Critical patent/EP0089398A1/fr
Application granted granted Critical
Publication of EP0089398B1 publication Critical patent/EP0089398B1/fr
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M5/00—Casings; Linings; Walls
    • F23M5/06—Crowns or roofs for combustion chambers
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0081—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for slabs; for billets
    • 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
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B9/32—Casings
    • 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
    • F27D1/02—Crowns; Roofs
    • F27D1/025—Roofs supported around their periphery, e.g. arched roofs

Definitions

  • the present invention relates to a ceiling beam construction for a heating furnace which comprises a ceiling portion of the heating furnace, and a ceiling beam means for supporting load of said ceiling portion.
  • the invention is applicable to a heating furnace for heat treating workpieces such as steel slabs, etc.
  • refractory materials for a ceiling of the furnace are generally suspended from ceiling beams constituted by H-shaped steels, and provided above the furnace through suspension pipes, hanger tiles, etc. so as to support the weight of such ceiling refractory materials while combustion air ducts, gas and fuel supply ducts, and exhaust ducts, etc. are normally piped or laid through reinforcing fittings and support fittings fixed to the ceiling beams.
  • an object of the present invention is to provide an improved ceiling beam construction for a heating furnace in which space required for installation of separate gas ducts is reduced as compared with conventional arrangements, with a consequent decrease in the number of duct supporting fitting or fixtures.
  • Another object of the present invention is to provide an improved ceiling beam construction which is simple in structure and highly reliable in performance, and can be readily incorporated into heating furnaces of various types at low cost.
  • a ceiling beam construction for a heating furnace which comprises a ceiling portion of the heating furnace, and a ceiling beam means for supporting load of said ceiling portion, characterised in that said beam means has a closed cross section for utilisation of its interior as a gas duct means for reduction of space required for installation of separate gas duct means.
  • the ceiling beam construction generally includes a plurality of pairs of ceiling beam support posts S (Fig. 2) which are provided adjacent to respective outer faces of opposite side walls W of the heating furnace 1 fixed to studs R at predetermined intervals in the longitudinal direction of said side walls W ; ceiling beams 6 connected between each pair of said ceiling beam support posts S; a number of auxiliary ceiling beams B provided between said ceiling beams 6 so as to extend in the longitudinal direction of said heating furnace 1; a plurality of ceiling suspension members 4 such as suspension pipes or the like suitably fixed to the auxiliary ceiling beams B so as to extend in the widthwise direction of the heating furnace 1; and hanger tiles 3 (Fi g. 1) integrally provided with a ceiling refractory material 2 of the heating furnace 1 and suspended from said suspension members 4, for example, by metal hangers 5.
  • ceiling construction described in the foregoing is not particularly essential to the present invention, but may be replaced by any other known constructions of similar type except for the construction of the ceiling beam 6 as described in detail hereinbelow..
  • the ceiling beams 6 at least in the vicinity of burners 10 arranged in the widthwise direction of the furnace 1 are each formed into a closed cross section of approximately a square configuration for simultaneously utilizing the interior of the ceiling beams 6 as combustion air supply ducts 7.
  • the combustion air supply duct 7 thus provided in the ceiling beam 6 is connected, at a suitable position, for example, at one side of the beam 6, with a conbustion air supply main duct 8 which is further coupled to an air supply unit A, while the ceiling beam 6 is further formed with a plurality of through-holes 0 in position, for example, at its other side, to which a branched pipe 9 having a plurality of air supply ducts 9a each connected to the burners 10 is coupled for communication with the air supply duct 7 formed in the ceiling beam 6.
  • each burner 10 is connected to a fuel supply unit F as shown.
  • a suitable heat insulation material 11 may be lined along the internal walls of the combustion air supply duct 7, and that the closed cross, sectional shape of the ceiling beam 6 is not limited to the square shape, but may be modified into various other configurations.
  • the ceiling beam construction of the present invention may further include a hollow beam forming an exhaust duct or flue arrangement as shown in Figs. 2 and 3 for uniform heating of workpieces with a reduced heatina time.
  • the workpieces to be treated are heated by burners provided at upper and lower portions of the furnace, while exhaust gases produced thereby are discharged into a flue or exhaust duct through one exhaust gas discharge opening provided in the ceiling portion at the workpiece charging side cf the heating furnace. Therefore, the flow of combustion exhaust gases within the heating furnace is increased in amount at the upper surface side of the workpieces to be treated, thus resulting in a temperature difference more than necessary between the upper surfaces and lower surfaces of the workpieces, with a consequent increase in the heating time as well as various inconveniences at subsequent processes such as a rolling process, etc.
  • the exhaust duct arrangement may, for example, include a plurality of discharge openings (nct particularly shown) for exhaust gases which openings are provided at predetermined intervals in upper and lower portions of the workpiece charging side (i.e. left side in Figs. 2 and 3) in the widthwise direction of the heating furnace, and are .connected to an upper exhaust duct or flue E disposed between ceiling beams 6b at the left side in Figs.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Tunnel Furnaces (AREA)
  • Supports For Pipes And Cables (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
EP82102456A 1982-03-24 1982-03-24 Poutre de voûte pour un four de traitement thermique Expired EP0089398B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE8282102456T DE3274576D1 (en) 1982-03-24 1982-03-24 Ceiling beam construction for heating furnace
AT82102456T ATE24044T1 (de) 1982-03-24 1982-03-24 Gewoelbetraeger fuer einen waermebehandlungsofen.
EP82102456A EP0089398B1 (fr) 1982-03-24 1982-03-24 Poutre de voûte pour un four de traitement thermique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP82102456A EP0089398B1 (fr) 1982-03-24 1982-03-24 Poutre de voûte pour un four de traitement thermique

Publications (2)

Publication Number Publication Date
EP0089398A1 true EP0089398A1 (fr) 1983-09-28
EP0089398B1 EP0089398B1 (fr) 1986-12-03

Family

ID=8188947

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82102456A Expired EP0089398B1 (fr) 1982-03-24 1982-03-24 Poutre de voûte pour un four de traitement thermique

Country Status (3)

Country Link
EP (1) EP0089398B1 (fr)
AT (1) ATE24044T1 (fr)
DE (1) DE3274576D1 (fr)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE395967C (de) * 1924-05-24 Fritz Preuss Kippbarer Martinofen
GB259998A (en) * 1925-10-17 1927-07-28 Fritz Hillmann Improvements in arches for boiler furnaces
GB354214A (en) * 1930-05-02 1931-08-04 Hermann Roemer Improvements in or relating to cooling devices for furnace walls
DE1000954B (de) * 1953-12-28 1957-01-17 Suedwestfalen Ag Stahlwerke Luftgekuehltes Herdgewoelbe mit quer zur Gewoelbeachse angeordneten Kuehlkanaelen
FR1187129A (fr) * 1957-11-07 1959-09-07 Perfectionnements aux systèmes et dispositions pour la construction d'arches suspendues ou semi-auto-portantes avec carneaux de chauffage ou de récupération
DE1109824B (de) * 1959-01-21 1961-06-29 Lucien Chevalier Rohrfoermiger Tragkoerper fuer ein aufgehaengtes Gewoelbe
US3133512A (en) * 1962-08-31 1964-05-19 Levi S Longenecker Furnace nose
DE1433748A1 (de) * 1963-12-03 1969-09-25 Koho Es Gepipari Miniszterium Verfahren und Einrichtung zur Ausfuehrung der in OEfen durchgefuehrten ueblichen Aufgaben
FR2278049A1 (fr) * 1974-07-12 1976-02-06 Studiceram Voute plate pour fourneaux du type a tunnel

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE395967C (de) * 1924-05-24 Fritz Preuss Kippbarer Martinofen
GB259998A (en) * 1925-10-17 1927-07-28 Fritz Hillmann Improvements in arches for boiler furnaces
GB354214A (en) * 1930-05-02 1931-08-04 Hermann Roemer Improvements in or relating to cooling devices for furnace walls
DE1000954B (de) * 1953-12-28 1957-01-17 Suedwestfalen Ag Stahlwerke Luftgekuehltes Herdgewoelbe mit quer zur Gewoelbeachse angeordneten Kuehlkanaelen
FR1187129A (fr) * 1957-11-07 1959-09-07 Perfectionnements aux systèmes et dispositions pour la construction d'arches suspendues ou semi-auto-portantes avec carneaux de chauffage ou de récupération
DE1109824B (de) * 1959-01-21 1961-06-29 Lucien Chevalier Rohrfoermiger Tragkoerper fuer ein aufgehaengtes Gewoelbe
US3133512A (en) * 1962-08-31 1964-05-19 Levi S Longenecker Furnace nose
DE1433748A1 (de) * 1963-12-03 1969-09-25 Koho Es Gepipari Miniszterium Verfahren und Einrichtung zur Ausfuehrung der in OEfen durchgefuehrten ueblichen Aufgaben
FR2278049A1 (fr) * 1974-07-12 1976-02-06 Studiceram Voute plate pour fourneaux du type a tunnel

Also Published As

Publication number Publication date
DE3274576D1 (en) 1987-01-15
ATE24044T1 (de) 1986-12-15
EP0089398B1 (fr) 1986-12-03

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