US3358978A - Waste gas main for electric furnaces, particularly arc furnaces - Google Patents

Waste gas main for electric furnaces, particularly arc furnaces Download PDF

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Publication number
US3358978A
US3358978A US480926A US48092665A US3358978A US 3358978 A US3358978 A US 3358978A US 480926 A US480926 A US 480926A US 48092665 A US48092665 A US 48092665A US 3358978 A US3358978 A US 3358978A
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US
United States
Prior art keywords
waste gas
furnace
furnaces
socket
gas conduit
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
US480926A
Other languages
English (en)
Inventor
Lambrecht Josef
Eglseer Franz
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.)
Voestalpine AG
Voest AG
Original Assignee
Voestalpine 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 Voestalpine AG filed Critical Voestalpine AG
Application granted granted Critical
Publication of US3358978A publication Critical patent/US3358978A/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
    • F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
    • F27D17/30—Arrangements for extraction or collection of waste gases; Hoods therefor
    • F27D17/304—Arrangements for extraction or collection of waste gases; Hoods therefor specially adapted for electric arc furnaces
    • 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
    • F27B14/00—Crucible or pot furnaces
    • F27B14/02—Crucible or pot furnaces with tilting or rocking arrangements
    • 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
    • F27D11/00—Arrangement of elements for electric heating in or on furnaces
    • F27D11/08—Heating by electric discharge, e.g. arc discharge
    • 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
    • Y10T403/00—Joints and connections
    • Y10T403/32—Articulated members
    • Y10T403/32008—Plural distinct articulation axes
    • 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
    • Y10T403/00—Joints and connections
    • Y10T403/32—Articulated members
    • Y10T403/32008—Plural distinct articulation axes
    • Y10T403/32032—Plural ball and socket
    • 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
    • Y10T403/00—Joints and connections
    • Y10T403/32—Articulated members
    • Y10T403/32254—Lockable at fixed position
    • Y10T403/32262—At selected angle
    • Y10T403/32311—Ball and socket

Definitions

  • This invention relates to a waste gas system for a tiltable electric furnace having a socket conduit for discharge of waste .gases and a waste gas conduit mounted for swinging movement in a substantially horizontal plane above the top of the electric furnace, the socket conduit and the waste gas conduit being maintained in alignment by a linkage system including a pair of arms or links connected to each other by a fork joint and having their other ends connected respectively to the waste gas conduit and the furnace by means of ball and socket joints.
  • the arc furnace must be capable of various movements; it must, for instance, be adapted to be moved, to some extent, in horizontal direction, and it must be capable of being tilted in a vertical plane determined by the tap hole and by the furnace axis. These movements cause the mentioned Waste gas opening and the waste gas socket in the furnace cover, respectively, to describe a cycloidal curve in said vertical plane. It is, therefore, practically impossible to join the waste gas socket immediately to the waste gas conduit leading to the dust removing plant, because the hot off-gases from the furnace would soon damage the joints necessary in the pipe lines.
  • the waste gas conduit has been arranged to be sleWable over the furnace in such manner that its intake end, which cooperates with the waste gas socket, is capable of taking up the waste gases Ice in the most important furnace positions.
  • this necessitates the waste gas conduit to be swung, in each case, over the waste gas socket, which has hitherto been effected by hand.
  • the invention comes in by providing a device for automatically adjusting the waste gas conduit in dependence on the furnace position.
  • This device is characterised by an articulated linkage by which the slewable end of the waste gas conduit is connected to a suitable point of the arc furnace and its casing, respectively.
  • the articulated linkage comprises an arm connected by means of a ball joint to the cable bridge of the furnace and to the swing pipe of the waste gas conduit, respectively, and a second arm connected to the swing pipe of the 'waste gas tube and to the cable bridge, respectively, which two arms are connected to each other by means of a fork joint.
  • the ball joint connecting the arm to the swing pipe and to the cable bridge, respectively is provided with spring elements.
  • FIG. 1 is a showing of the arc furnace tilted backward for deslagging.
  • FIG. -2 is a representation as viewed from the pouring side.
  • FIG. 3 is a diagrammatic representation of the two arms, FIG. 4 a showing of the ball joint on the swing pipe, FIG. 5 is a transverse sectional view thereof, and
  • FIG. 6 is a showing of the fork joint.
  • Numeral 1 designates the furnace casing of the arc furnace; numeral 2 denotes the furnace door, 3 is the tap hole, 4 the sand coffering, 5 the waste gas socket provided in the furnace cover.
  • the vessel is adapted to be moved horizontally to a limited extent on a bogie 6 and tiltable on a cradle 7.
  • Numeral '8 designates the slewable waste gas pipe, which rests on a console 9 and is slewable together with the latter in a horizontal plane.
  • the device of the invention comprising the arms 10 and 10'.
  • the two arms are connected with each other through a fork joint 13.
  • Arm 10 is connected to swing pipe 8 by means of a ball joint 12 with journal 11, and arm 10' is connected to the cable bridge 15 of the furnace through a ball pivot 16.
  • the fork joint 13 is illustrated in detail in FIG. 6, and the ball joint on the cable bridge is shown in FIGS. 4 and 5.
  • the spring elements '14 are indicated which diminish the inertia forces in case of possible shock-like movements.
  • the arrangement can also be kinematically reversed, that is to say that the ball joint may be provided on the cable bridge and the flexible journal connection may be provided on the swing pipe.
  • a waste gas main for tiltable electric furnaces comprising a waste gas socket in the furnace cover, a waste gas conduit having a mouth for receiving waste gases from said socket, means supporting said waste gas conduit for slewing movement in a horizontal plane and an articulated linkage interposed between and connecting the slewable Waste gas conduit and the tiltable furnace for guiding said waste gas conduit so that the mouth thereof is positioned vis-a-vis to the mouth of the waste gas socket in any position of said tiltable electric furnace in order to take up the waste gases.
  • a waste gas main as set forth in claim 1, wherein the articulated linkage comprises a first arm, a ball joint securing one end of said first arm to said furnace, a second arm, means securing one end of said second arm to said slewable waste gas conduit and a fork joint connecting the opposite ends of said arms to each other.
  • a waste gas main as set forth in claim L1 wherein the articulated linkage comprises a first arm, a ball joint connecting one end of said first arm to the slewable waste gas conduit, a second arm having one end secured to said furnace and a fork joint connecting the opposite ends of said arms to each other.
  • a waste gas main as set forth in claim 1, wherein the articulated linkage comprises a first arm, a ball joint securing one end of said first arm to said furnace, a second arm, means securing one end of said second arm to the slewable waste gas conduit, a fork joint connecting the opposite ends of said two arms to each other and spring elements in said ball joint.
  • a waste gas main as set forth in claim 1, wherein the articulated linkage comprises an arm, a ball joint securing one end of said arm to the slewable waste gas conduit, a second arm secured at one end to said furnace, a fork joint connecting the other ends of said arms to each other, and spring elements in said ball joint connecting said arm to said waste gas conduit.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Furnace Charging Or Discharging (AREA)
US480926A 1964-09-02 1965-08-19 Waste gas main for electric furnaces, particularly arc furnaces Expired - Lifetime US3358978A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT757564A AT267566B (de) 1964-09-02 1964-09-02 Abgasführung bei Elektroöfen, insbesondere Lichtbogenöfen

Publications (1)

Publication Number Publication Date
US3358978A true US3358978A (en) 1967-12-19

Family

ID=3597436

Family Applications (1)

Application Number Title Priority Date Filing Date
US480926A Expired - Lifetime US3358978A (en) 1964-09-02 1965-08-19 Waste gas main for electric furnaces, particularly arc furnaces

Country Status (6)

Country Link
US (1) US3358978A (de)
AT (1) AT267566B (de)
BE (1) BE669107A (de)
DE (1) DE1217416B (de)
GB (1) GB1114139A (de)
LU (1) LU49384A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5850413A (en) * 1996-10-21 1998-12-15 Dianeli & Co. Officine Meccaniche Device to support and swing the hearth in an electric furnace

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8001371A (nl) * 1980-03-07 1981-10-01 Estel Hoogovens Bv Afzuiginrichting ten behoeve van het ovenhuis van een hoogoven.
DE10150628B4 (de) * 2001-10-12 2007-04-19 Sms Demag Ag Elektrolichtbogenofenanlage mit einem Abgaskrümmer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5850413A (en) * 1996-10-21 1998-12-15 Dianeli & Co. Officine Meccaniche Device to support and swing the hearth in an electric furnace
AU719295B2 (en) * 1996-10-21 2000-05-04 Danieli & C. Officine Meccaniche S.P.A. Device to support and swing the hearth in an electric furnace

Also Published As

Publication number Publication date
AT267566B (de) 1969-01-10
LU49384A1 (de) 1965-10-25
GB1114139A (en) 1968-05-15
DE1217416B (de) 1966-05-26
BE669107A (de) 1965-12-31

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