EP3757497A1 - Chaussure de rayonnement - Google Patents

Chaussure de rayonnement Download PDF

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Publication number
EP3757497A1
EP3757497A1 EP20181958.8A EP20181958A EP3757497A1 EP 3757497 A1 EP3757497 A1 EP 3757497A1 EP 20181958 A EP20181958 A EP 20181958A EP 3757497 A1 EP3757497 A1 EP 3757497A1
Authority
EP
European Patent Office
Prior art keywords
shielding body
radiation
pipe
shoe according
radiation shoe
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Withdrawn
Application number
EP20181958.8A
Other languages
German (de)
English (en)
Inventor
Ferdinand Stöckmann
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.)
Intocast AG
Original Assignee
Intocast AG
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 Intocast AG filed Critical Intocast AG
Publication of EP3757497A1 publication Critical patent/EP3757497A1/fr
Withdrawn legal-status Critical Current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
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D1/0003—Linings or walls
    • F27D1/0033—Linings or walls comprising heat shields, e.g. heat shields
    • 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
    • F27D1/12—Casings; Linings; Walls; Roofs incorporating 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
    • 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
    • F27B9/201—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 walking beam furnace
    • 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
    • F27D1/0043—Floors, hearths
    • 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
    • F27D2003/0034—Means for moving, conveying, transporting the charge in the furnace or in the charging facilities
    • F27D2003/0046—Means for moving, conveying, transporting the charge in the furnace or in the charging facilities comprising one or more movable arms, e.g. forks
    • F27D2003/0048—Walking beams

Definitions

  • the invention relates to a radiation shoe according to the preamble of claim 1.
  • Radiation shoes of the generic type are used in walking beam furnaces in order to minimize heat losses in the furnace system. To do this, they shield the area of the lifting slots in the bottom of the furnace.
  • the temperature range of approx. 1300 ° C, approx. 90% of the heat is transferred by radiation.
  • Unscreened slots in the furnace release part of the radiation and thus the thermal energy through the furnace base into the environment.
  • lifting slots are shielded by generic radiation shoes. The reason for this is the risk that the mostly massive shoe components fall off and bring the furnace mechanics to a standstill. This in turn causes a furnace downtime and thus a loss of production.
  • Radiation shoes known from the prior art consist of reinforced concrete components that are welded to the pipe system.
  • a disadvantage of this embodiment is that the components cannot be fired because this would destroy the steel portion. This is what gives these components their ultimate strength in operation after the moisture and later the chemically bound water have been expelled. Since the heating is undefined during operation, these components tend to develop cracks, which later lead to the destruction of the components and, in the worst case, to the aforementioned standstill.
  • the invention is based on the object of creating a radiation shoe according to the preamble of claim 1, which, while being simple and inexpensive to manufacture, has a longer service life, is easy to assemble and can be removed without destruction for maintenance purposes.
  • a radiation shoe for fastening to a pipe of a furnace in particular to a water or steam cooling pipe in a lifting slot in the floor of a walking beam furnace, comprising a refractory shielding body with a central opening for the pipe, a substantially flat bottom and one from the central opening towards the outside decreasing thickness, created, which has a steel-free formed and fired shielding body.
  • the radiation shoe essentially consists of a ceramic body which can be shaped and fired without any steel content.
  • Components of the radiation shoe that are annealed or fired according to the invention do not develop any cracks during operation and are therefore mechanically stronger.
  • the support plate required in the prior art is not necessary.
  • a narrow, for example approx. 50mm wide, support ring that is welded to the pipe system is sufficient. Since this support ring is not nearly as exposed, it does not scale.
  • the fastening mechanism used is also placed very close to the pipe system and does not scale. Furthermore, it offers sufficient degrees of freedom to parry any thermal expansion.
  • the component is very easy to remove and, in the case of surrounding repairs, can be put back on again.
  • the shielding body is preferably designed in two parts and can therefore be easily mounted around a pipe.
  • a ceramic fiber mat can be provided between the two parts which expediently has a support for a support ring on the pipe.
  • the radiation shoe preferably has a recess for a holding device that extends from the opening into the shielding body.
  • the holding device can have, for example, a support ring fastened, in particular welded, to the pipe and / or one, two or more hooks fastened, in particular welded, to the pipe.
  • the recess advantageously has a section which is designed to be complementary to a pin-shaped holding element.
  • a clamp can be inserted into this section, for example made of a heat-resistant steel of quality 1.4841 or the like.
  • the clamp can be designed at its free end to be hooked into the hook.
  • the section provided for receiving the block preferably extends from the central opening for the pipe obliquely downward in the direction of the outer edge of the shielding body.
  • the recess can also have a section designed to be complementary to the support ring attached to the pipe.
  • the ceramic fiber mat expediently extends between the support ring and the shielding body.
  • the invention also provides a walking beam furnace comprising a lifting slot and a cooling tube arranged therein, as well as the radiation shoe according to the invention, with a support ring and hooks being attached to the cooling tube, into which pin-shaped retaining elements are hooked that extend into the shielding body.
  • the in Fig. 2 The radiation shoe 1 shown comprises a refractory, steel-free formed and fired and / or sintered shielding body 2 with a central opening 3 through which a pipe 4 such as a water or steam cooling pipe of a walking beam furnace extends, a substantially flat underside 5 and one of the central opening 3 towards the outside decreasing thickness.
  • a pipe 4 such as a water or steam cooling pipe of a walking beam furnace
  • the shielding body 2 is formed here from two parts 2 ', 2 "which enclose the tube 4.
  • a ceramic fiber mat 6 or the like is provided between the two parts.
  • the shielding body 2 rests on the ceramic fiber mat 6 on a narrow support ring 7, which can be welded to the tube 4 or otherwise attached to it.
  • two hooks 8 are expediently attached to the tube 4, in which pin-shaped fastening elements, so-called clamps 9, engage, which in turn fit into pin-shaped recesses 10 of the The shielding body extend in.
  • the parts 2 ', 2 "of the shielding body 2 are thus held free of tension along the tilting force vector by the clamp / hook device.
  • the clamps 9 can have a suitable surface structure for this purpose, e.g. a corrugation or a thread 11 as shown.
  • Fig. 4 (e) Illustrates the recess 12 for the holding device on part 2 'of the shielding body 2.
  • An upper recess section 13 for the hooks 8, a middle recess section 14 for the tube 4, a lower recess section 15 for the support ring 7 and a recess section 16 for the clamp can be seen 9 provided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
EP20181958.8A 2019-06-24 2020-06-24 Chaussure de rayonnement Withdrawn EP3757497A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202019002656.8U DE202019002656U1 (de) 2019-06-24 2019-06-24 Strahlungsschuh

Publications (1)

Publication Number Publication Date
EP3757497A1 true EP3757497A1 (fr) 2020-12-30

Family

ID=71143519

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20181958.8A Withdrawn EP3757497A1 (fr) 2019-06-24 2020-06-24 Chaussure de rayonnement

Country Status (2)

Country Link
EP (1) EP3757497A1 (fr)
DE (1) DE202019002656U1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT523403B1 (de) 2021-01-21 2021-08-15 Andritz Fbb Gmbh Abschirmschuh fuer hubbalkenoefen

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4529381A (en) * 1983-08-15 1985-07-16 Exxon Research & Engineering Co. Radiation shield and method for shielding a furnace convection section
EP0711970A1 (fr) * 1994-11-11 1996-05-15 D.W. Schulte GmbH & Co. KG Soulier de protection utilisé sur le transporteur à longerons d'un four à longerons mobiles
US20150044128A1 (en) * 2011-11-30 2015-02-12 Guangzhou Gbs High-Tech & Industry Co., Ltd. Deacidification process and apparatus thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4529381A (en) * 1983-08-15 1985-07-16 Exxon Research & Engineering Co. Radiation shield and method for shielding a furnace convection section
EP0711970A1 (fr) * 1994-11-11 1996-05-15 D.W. Schulte GmbH & Co. KG Soulier de protection utilisé sur le transporteur à longerons d'un four à longerons mobiles
US20150044128A1 (en) * 2011-11-30 2015-02-12 Guangzhou Gbs High-Tech & Industry Co., Ltd. Deacidification process and apparatus thereof

Also Published As

Publication number Publication date
DE202019002656U1 (de) 2020-09-28

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