EP0258105B1 - Tubular beam support for a furnace for heating steel industry products - Google Patents

Tubular beam support for a furnace for heating steel industry products Download PDF

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Publication number
EP0258105B1
EP0258105B1 EP87401781A EP87401781A EP0258105B1 EP 0258105 B1 EP0258105 B1 EP 0258105B1 EP 87401781 A EP87401781 A EP 87401781A EP 87401781 A EP87401781 A EP 87401781A EP 0258105 B1 EP0258105 B1 EP 0258105B1
Authority
EP
European Patent Office
Prior art keywords
tube
fire
dog
moulded component
column
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
EP87401781A
Other languages
German (de)
French (fr)
Other versions
EP0258105A1 (en
Inventor
Yves Braud
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.)
Fives Stein SA
Original Assignee
Stein Heurtey 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 Stein Heurtey SA filed Critical Stein Heurtey SA
Priority to AT87401781T priority Critical patent/ATE53116T1/en
Publication of EP0258105A1 publication Critical patent/EP0258105A1/en
Application granted granted Critical
Publication of EP0258105B1 publication Critical patent/EP0258105B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/02—Skids or tracks for heavy objects
    • F27D3/022—Skids
    • 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
    • F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
    • F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace
    • F27B9/22—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace on rails, e.g. under the action of scrapers or pushers

Definitions

  • each of these pins is hitherto formed by a vertical assembly of two concentric tubes, capable of ensuring the circulation of cooling water, which is fixed at its upper part to the chenet tube and at its lower part to a support frame possibly mobile so as to communicate to the chenet a rectangular or circular movement ensuring the movement of the products.
  • the skittles are the source of heat losses and it is interesting to reduce their number in order to reduce the heat losses or, for the same number of skittles, to reduce the diameter of the chenets, therefore their shadow effect on the products to be heated .
  • the present invention relates to a chenet support which provides better support for the chenets than the existing keels, which consequently reduces the deformation which these chenets undergo under the action of the weight of the products and makes it possible to further space the keels for the same load on the crawlers.
  • this invention relates to a chenet tube, supported by a keel, characterized in that the chenet tube rests on the keel by means of a molded part which has a triangular shape in the vertical plane passing through the axis of the chenet tube and is fitted on the support keel.
  • the molded part is connected to the external tube, while the internal tube is engaged in the support part and extends to the vicinity of the closed upper face of this one.
  • the molded part can be fixed to the chenet tube by two longitudinal weld seams placed in the vicinity of the neutral fiber of the tube.
  • the device according to the invention which is intended to support a horizontal chenet tube 1 consists of a molded piece 2 of steel which has a triangular shape in the vertical plane passing through the axis of the tube 1, as shown in Figure 1, and a substantially rectangular shape in the perpendicular plane.
  • the upper face 2a of this part is closed and has the shape of a gutter in which the tube 1 is engaged; it is fixed to the part 2 by two horizontal weld beads 3, near the neutral fiber of the tube, so as not to reduce the resistance of the latter.
  • the part 2 is fitted onto a set of two concentric tubes 4 and 5 which constitute a support keel and allow a circulation of cooling water, the latter arriving via the external tube 5 and leaving via the internal tube 4.
  • the part 2 has at its base a cylindrical part 2b by means of which it rests on the outer tube 5 while the tube 4 is engaged in the part 2 and extends almost to the upper face 2a of this part.
  • the inner tube 4 is closed by a plate 6 supported by a cross 7 and whose length in the axial direction is greater than the diameter of the tube 4 ( Figure 1).
  • This plate has two flaps 8 partially cut and raised, which determines in this plate openings 9 allowing the cooling water to enter the tube 4.
  • the latter also has at its end side inlet openings 10
  • the tube 4 carries a plate 11 forming a baffle a short distance from its end. In operation, the cooling water which arrives through the tube 5 flows for the most part between the plate 6 and the upper face 2g of the molded part 2 while cooling this face.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat Treatment Of Articles (AREA)
  • Resistance Heating (AREA)
  • Building Environments (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Catalysts (AREA)
  • Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Furnace Charging Or Discharging (AREA)

Abstract

1. Fire-dog tube supported by a column, characterized in that the fire-dog tube (1) rests on the column (4, 5) through the intermediary of a moulded component (2) which has a triangular shape in the vertical plane passing through the axis of said fire-dog tube (1) and is fitted onto the support column (4, 5).

Description

Dans les fours de réchauffage de produits sidé- rurgiques, ces produits reposent sur des chenêts constitués par des tubes refroidis par circulation d'eau et soutenus par des colonnes métalliques ou quilles. Chacune de ces quilles est formée jusqu'à présent par un ensemble vertical de deux tubes concentriques, pouvant assurer une circulation d'eau de refroidissement, qui est fixé à sa partie supérieure au tube chenêt et à sa partie inférieure à une charpente de soutien éventuellement mobile de façon à communiquer au chenêt un mouvement rectangulaire ou circulaire assurant le déplacement des produits.In the furnaces for heating steel products, these products rest on crawlers made up of tubes cooled by water circulation and supported by metal columns or skittles. Each of these pins is hitherto formed by a vertical assembly of two concentric tubes, capable of ensuring the circulation of cooling water, which is fixed at its upper part to the chenet tube and at its lower part to a support frame possibly mobile so as to communicate to the chenet a rectangular or circular movement ensuring the movement of the products.

Les quilles sont la source de pertes thermiques et il est intéressant de diminuer leur nombre de façon à réduire les pertes thermiques ou, pour un même nombre de quilles, de réduire le diamètre des chenêts, donc leur effet d'ombre sur les produits à réchauffer.The skittles are the source of heat losses and it is interesting to reduce their number in order to reduce the heat losses or, for the same number of skittles, to reduce the diameter of the chenets, therefore their shadow effect on the products to be heated .

La présente invention a pour objet un support de chenêt qui assure un meilleur soutien des chenêts que les quilles existantes, ce qui diminue par suite la déformation que ces chenêts subissent sous l'action du poids des produits et permet d'espacer davantage les quilles pour une même charge sur les chenêts.The present invention relates to a chenet support which provides better support for the chenets than the existing keels, which consequently reduces the deformation which these chenets undergo under the action of the weight of the products and makes it possible to further space the keels for the same load on the crawlers.

En conséquence, cette invention concerne un tube chenêt, supporté par une quille, caractérisé en ce que le tube chenêt s'appuie sur la quille par l'intermédiaire d'une pièce moulée qui a une forme triangulaire dans le plan vertical passant par l'axe du tube chenêt et est emboîtée sur la quille de support.Consequently, this invention relates to a chenet tube, supported by a keel, characterized in that the chenet tube rests on the keel by means of a molded part which has a triangular shape in the vertical plane passing through the axis of the chenet tube and is fitted on the support keel.

Dans un mode de réalisation dans lequel la quille est formée de deux tubes concentriques, la pièce moulée se raccorde au tube extérieur, alors que le tube intérieur est engagé dans la pièce support et s'étend jusqu'au voisinage de la face supérieure fermée de celle-ci.In an embodiment in which the keel is formed of two concentric tubes, the molded part is connected to the external tube, while the internal tube is engaged in the support part and extends to the vicinity of the closed upper face of this one.

La pièce moulée peut être fixée au tube chenêt par deux cordons de soudure longitudinaux placés au voisinage de la fibre neutre du tube.The molded part can be fixed to the chenet tube by two longitudinal weld seams placed in the vicinity of the neutral fiber of the tube.

On a décrit, ci-après, à titre d'exemple non limitatif, un mode de réalisation du tube chenêt selon l'invention, avec référence au dessin annexé dans lequel:

  • - la figure 1 montre le support vu dans un sens perpendiculaire à l'axe du tube du chenêt.
  • - la figure 2 montre ce support vu dans la direction de l'axe du tube chenêt,
  • - la figure 3 en est une vue en plan.
An embodiment of the chenet tube according to the invention has been described below, by way of nonlimiting example, with reference to the appended drawing in which:
  • - Figure 1 shows the support seen in a direction perpendicular to the axis of the chenet tube.
  • FIG. 2 shows this support seen in the direction of the axis of the chenet tube,
  • - Figure 3 is a plan view.

Tel qu'il est représenté au dessin, le dispositif selon l'invention, qui est destiné à supporter un tube chenêt horizontal 1, est constitué par une pièce moulée 2 en acier qui a une forme triangulaire dans le plan vertical passant par l'axe du tube 1, comme le montre la figure 1, et une forme sensiblement rectangulaire dans le plan perpendiculaire. La face supérieure 2a de cette pièce est fermée et présente la forme d'une gouttière dans laquelle est engagé le tube 1; celui-ci est fixé à la pièce 2 par deux cordons horizontaux de soudure 3, à proximité de la fibre neutre du tube, pour ne pas diminuer la résistance de ce dernier.As shown in the drawing, the device according to the invention, which is intended to support a horizontal chenet tube 1, consists of a molded piece 2 of steel which has a triangular shape in the vertical plane passing through the axis of the tube 1, as shown in Figure 1, and a substantially rectangular shape in the perpendicular plane. The upper face 2a of this part is closed and has the shape of a gutter in which the tube 1 is engaged; it is fixed to the part 2 by two horizontal weld beads 3, near the neutral fiber of the tube, so as not to reduce the resistance of the latter.

La pièce 2 est emboîtée sur un emsemble de deux tubes concentriques 4 et 5 qui constituent une quille de support et permettent une circulation d'eau de refroidissement, celle-ci arrivant par le tube extérieur 5 et repartant par le tube intérieur 4.The part 2 is fitted onto a set of two concentric tubes 4 and 5 which constitute a support keel and allow a circulation of cooling water, the latter arriving via the external tube 5 and leaving via the internal tube 4.

Dans le mode de réalisation représenté, la pièce 2 présente à sa base une partie cylindrique 2b par l'intermédiaire de laquelle elle repose sur le tube extérieur 5 alors que le tube 4 est engagé dans la pièce 2 et s'étend presque jusqu'à la face supérieure 2a de cette pièce.In the embodiment shown, the part 2 has at its base a cylindrical part 2b by means of which it rests on the outer tube 5 while the tube 4 is engaged in the part 2 and extends almost to the upper face 2a of this part.

Le tube intérieur 4 est fermé par une plaque 6 supportée par un croisillon 7 et dont la longueur dans le sens axial est supérieure au diamètre du tube 4 (Figure 1). Cette plaque comporte deux volets 8 partiellement découpés et relevés, ce qui détermine dans cette plaque des ouvertures 9 permettant à l'eau de refroidissement d'entrer dans le tube 4. Celui-ci comporte également à son extrémité des ouvertures d'entrée latérales 10. Le tube 4 porte à une faible distance de son extrémité une plaque 11 formant chicane. En fonctionnement, l'eau de refroidissement qui arrive par le tube 5 s'écoule dans sa plus grande partie entre la plaque 6 et la face supérieure 2g de la pièce moulée 2 en refroidissant cette face.The inner tube 4 is closed by a plate 6 supported by a cross 7 and whose length in the axial direction is greater than the diameter of the tube 4 (Figure 1). This plate has two flaps 8 partially cut and raised, which determines in this plate openings 9 allowing the cooling water to enter the tube 4. The latter also has at its end side inlet openings 10 The tube 4 carries a plate 11 forming a baffle a short distance from its end. In operation, the cooling water which arrives through the tube 5 flows for the most part between the plate 6 and the upper face 2g of the molded part 2 while cooling this face.

Claims (5)

1. Fire-dog tube supported by a column, characterized in that the fire-dog tube (1) rests on the column (4, 5) through the intermediary of a moulded component (2) which has a triangular shape in the vertical plane passing through the axis of said fire-dog tube (1) and is fitted onto the support column (4, 5).
2. Fire-dog tube according to Claim 1, the support column (4, 5) of which is composed of two concentric tubes, characterized in that the moulded component (2) is connected to the outer tube (5) whereas the inner tube (4) is engaged into the moulded component (2) and extends into the vicinity of the closed upper face (2a) of that tube.
3. Fire-dog tube according to Claim 1 or 2, characterized in that the moulded component (2) is fixed to the fire-dog tube (1) by two longitudinal weld beads (3) situated in the vicinity of the neutral fibre of the tube.
4. Fire-dog tube according to one of Claims 1 to 3, characterized in that a guide plate (6) forms the end of the inner tube (4), passage openings for water (9 or 10) being provided in this plate or in the lateral wall of the inner tube (4) at its end.
5. Fire-dog tube according to one of Claims 1 to 4, characterized in that a plate (11) forming a chicane is fixed to the part of the inner tube (4) housed inside the moulded component (2).
EP87401781A 1986-08-04 1987-07-30 Tubular beam support for a furnace for heating steel industry products Expired - Lifetime EP0258105B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87401781T ATE53116T1 (en) 1986-08-04 1987-07-30 SUPPORT FOR A TUBE BEAM IN A REHEATING FURNACE FOR SIDERURGIC PRODUCTS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8611481 1986-08-04
FR8611481A FR2602322B1 (en) 1986-08-04 1986-08-04 TUBULAR CHENET SUPPORT FOR OIL FOR HEATING STEEL PRODUCTS

Publications (2)

Publication Number Publication Date
EP0258105A1 EP0258105A1 (en) 1988-03-02
EP0258105B1 true EP0258105B1 (en) 1990-05-23

Family

ID=9338140

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87401781A Expired - Lifetime EP0258105B1 (en) 1986-08-04 1987-07-30 Tubular beam support for a furnace for heating steel industry products

Country Status (7)

Country Link
EP (1) EP0258105B1 (en)
CN (1) CN87105346A (en)
AT (1) ATE53116T1 (en)
DE (1) DE3762918D1 (en)
ES (1) ES2014483B3 (en)
FR (1) FR2602322B1 (en)
IN (1) IN169627B (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2831251C2 (en) * 1978-07-15 1986-10-16 Smit Ovens Nijmegen B.V., Nijmegen Lifting plate furnace
JPS589915A (en) * 1981-07-10 1983-01-20 Nippon Kokan Kk <Nkk> Sealing device for moving hearth type continuous heat treatment furnace

Also Published As

Publication number Publication date
DE3762918D1 (en) 1990-06-28
FR2602322A1 (en) 1988-02-05
IN169627B (en) 1991-11-23
CN87105346A (en) 1988-04-06
FR2602322B1 (en) 1988-10-21
ES2014483B3 (en) 1990-07-16
ATE53116T1 (en) 1990-06-15
EP0258105A1 (en) 1988-03-02

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