EP0562701A1 - Couvercle refroidi par pulvérisation - Google Patents

Couvercle refroidi par pulvérisation Download PDF

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Publication number
EP0562701A1
EP0562701A1 EP93250064A EP93250064A EP0562701A1 EP 0562701 A1 EP0562701 A1 EP 0562701A1 EP 93250064 A EP93250064 A EP 93250064A EP 93250064 A EP93250064 A EP 93250064A EP 0562701 A1 EP0562701 A1 EP 0562701A1
Authority
EP
European Patent Office
Prior art keywords
spray
cover
swivel
drain
lid
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
EP93250064A
Other languages
German (de)
English (en)
Other versions
EP0562701B1 (fr
Inventor
Albert J. Zalner
Otto H. Metelmann
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.)
Vodafone GmbH
Original Assignee
Mannesmann 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 Mannesmann AG filed Critical Mannesmann AG
Publication of EP0562701A1 publication Critical patent/EP0562701A1/fr
Application granted granted Critical
Publication of EP0562701B1 publication Critical patent/EP0562701B1/fr
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
    • 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
    • F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
    • F27B3/10—Details, accessories, or equipment peculiar to hearth-type furnaces
    • F27B3/12—Working chambers or casings; Supports therefor
    • F27B3/16—Walls; Roofs
    • 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
    • F27D1/1816—Removable covers specially adapted for arc furnaces

Definitions

  • the invention relates to a spray-cooled lid for tiltable metallurgical vessels.
  • lids are placed on the furnace vessel and remain on it during operation. They do all the movements, especially the tilting of the vessel. In certain operating phases, for example when charging, the lid is lifted from the container and swiveled to the side.
  • a spray-cooled cover is known from US Pat. No. 4,715,042, in which the cooling medium is sucked off by means of venturi pumps. In practice it has been shown that this type of pump is not able to draw off large amounts of coolant. In special cases, water collects in the lid that instead of spray cooling there is normal water cooling with the negative effect that overheating of lid parts can occur in this area.
  • the object of the invention is to provide a spray-cooled lid of the type mentioned, in which a safe supply and removal of the cooling liquid in any position of the lid is possible in a structurally simple manner without the use of external energy.
  • the invention solves the problem by the characterizing features of claim 1.
  • two discharge lines are provided, which are guided coaxially for the majority of their distance and in a common transfer station of the coolant to the factory network.
  • the transfer station is at a distance from the lowest possible operating point of the cover, so that a reliable drainage of the cooling medium is guaranteed by gravity. The use of suction pumps is therefore unnecessary.
  • the cooling medium in the lid is extracted at two points, e.g. at the intersection of the central axis of the lid and the edge area, pointing once to the racking and once to the waste door.
  • a tunnel is provided in the groove provided on the outer edge of the cover, which ends in a trunk-like shape at the apex of tapping or slagging and is connected at the other end to pipelines arranged on the edge of the cover.
  • These drain pipes are designed as square pipes in the area of the cover, since this ensures that the floor is level with the apex of the channel and that the cooling medium can flow away safely.
  • the square tube which serves to drain the cooling medium from the region of the tapping side, is arranged parallel to the tilt axis in the region of the top of the cover, which faces the tapping hole. This makes it possible, in the "tapping" tilting position, to allow the water collecting in this tilting position to flow off safely in the region of the top of the lid.
  • the drain line which is connected to the top of the lid facing the slag flap, is designed as a square tube, so that the area in which it is connected to the edge of the lid is box-shaped.
  • the center of this box coincides with the tilt axis.
  • the box extends in the direction of the slag side of the lid and is therefore suitable for removing cooling liquid from the lid side of the lid on the slag side over a wide tilting angle range of the lid.
  • the square tube is inclined at an angle to the transfer station.
  • the ratios of the gutter depth of the cover and box size of the drain pipe are chosen so that the coolant in the Deslagging phase is safely conducted away from the lid without water being able to collect outside the channel.
  • the cooling water discharge is designed so that not only the tilting movement of the lid, but also the pivoting away without interrupting the water supply and drainage is possible.
  • hoses that can absorb torsions and bends without damage.
  • hoses are provided which are connected at one end to the cover drain pipes and at the other end are rotatably mounted on a swivel arm. If the lid tilts, be it in the parting or slag direction, this movement is carried out without moving the swivel arm.
  • the swivel arm is moved in a manner comparable to the movement of the lid support arm and thus enables the lid to be swiveled with the hoses connected.
  • the movement of the swivel arm tip is in turn compensated for by another hose, which is connected via swivel joints to the final piping of the discharge line, which is connected to the transfer station of the cooling medium to the plant network.
  • another hose which is connected via swivel joints to the final piping of the discharge line, which is connected to the transfer station of the cooling medium to the plant network.
  • FIG. 1 shows an overview of a furnace position with a metallurgical vessel 10, which has a tilting device 11, with which the vessel can be brought into the parting-off position 12 with a low-lying tap opening 14 and into the deslagging position 13.
  • the tilting angle during parting off is designated with " ⁇ " and that during deslagging with " ⁇ ”.
  • the metallurgical vessel 10 can be closed with a lid 20 by means of a lid lifting device 15.
  • the lid lifting device 15 can be pivoted away from the furnace vessel 10 via a lid rotating column 16 (shown in FIG. 4). Drain pipes 31 and 41 are arranged on the cover 20.
  • the lid 20 has a lower lid part 23 and an upper lid part 24, between which spray elements 21 for spraying coolant are arranged.
  • the lid edge 22 is designed as a trough 25, within which a partition 26 and a hood 27 are provided.
  • the partition wall 26, the hood 27 and the lid edge 22 are joined together as a tube which extends from the tilting axis Ii in the direction of the tap opening 14.
  • a drain line (tap) 30 is provided, which has a drain pipe 31 which is designed as a square pipe 32 near the cover.
  • a drain line (slag) 40 is provided which has a drain pipe 41 which is designed as a square pipe 42 near the cover. Couplings are provided on the drain pipes 31, 41, etc. the coupling pieces 61 and 62.
  • FIGS. 4 and 5 show the kinematics of a lid pivot, u.z. as a top view and a side view.
  • the lid 20 is pivoted away, for example during the loading process, into the position 20 from the vessel 10 with its tapping 14.
  • the drain pipes 31 and 41 including the coupling pieces 61, 62 are also pivoted.
  • this swivel movement is also carried out by the swivel arm 83, so that the connecting hoses 33 and 43 and the coupling pieces 64 and 65 also swivel at the same speed and at the same angle.
  • the discharge pipe 47 opens into a transfer station 70 which has a transfer container 71 which is connected to a plant network 79.
  • the transfer container is at a distance c from the lid.
  • an inflow line 50 is arranged, which consists of an inflow pipe 51 and an inflow hose 53.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Closures For Containers (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
EP93250064A 1992-03-24 1993-02-24 Couvercle refroidi par pulvérisation Expired - Lifetime EP0562701B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US856447 1992-03-24
US07/856,447 US5227119A (en) 1992-03-24 1992-03-24 Spray-cooled furnace cover

Publications (2)

Publication Number Publication Date
EP0562701A1 true EP0562701A1 (fr) 1993-09-29
EP0562701B1 EP0562701B1 (fr) 1996-01-03

Family

ID=25323659

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93250064A Expired - Lifetime EP0562701B1 (fr) 1992-03-24 1993-02-24 Couvercle refroidi par pulvérisation

Country Status (7)

Country Link
US (1) US5227119A (fr)
EP (1) EP0562701B1 (fr)
JP (1) JPH0642880A (fr)
AT (1) ATE132614T1 (fr)
DE (1) DE59301284D1 (fr)
ES (1) ES2081685T3 (fr)
ZA (1) ZA93227B (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5936995A (en) * 1997-11-14 1999-08-10 Fuchs Systems, Inc. Electric arc furnace with scrap diverting panel and associated methods
DE19925550A1 (de) * 1999-06-04 2000-12-07 Sms Demag Ag Verfahren und Vorrichtung zum Entleeren von metallurgischen Schmelzgefäßen durch Kippen
TW200930850A (en) * 2008-01-03 2009-07-16 Green Energy Technology Inc Cooling structure for body of crystal growth furnace

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986002436A1 (fr) * 1984-10-12 1986-04-24 Heggart Ronald G Procede et systeme de refroidissement d'un four
US4789991A (en) * 1988-01-19 1988-12-06 Mannesmann Aktiengesellschaft Cooling system for electric arc furnaces
US4815096A (en) * 1988-03-08 1989-03-21 Union Carbide Corporation Cooling system and method for molten material handling vessels
US4849987A (en) * 1988-10-19 1989-07-18 Union Carbide Corporation Combination left and right handed furnace roof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986002436A1 (fr) * 1984-10-12 1986-04-24 Heggart Ronald G Procede et systeme de refroidissement d'un four
US4789991A (en) * 1988-01-19 1988-12-06 Mannesmann Aktiengesellschaft Cooling system for electric arc furnaces
US4815096A (en) * 1988-03-08 1989-03-21 Union Carbide Corporation Cooling system and method for molten material handling vessels
US4849987A (en) * 1988-10-19 1989-07-18 Union Carbide Corporation Combination left and right handed furnace roof

Also Published As

Publication number Publication date
EP0562701B1 (fr) 1996-01-03
US5227119A (en) 1993-07-13
JPH0642880A (ja) 1994-02-18
DE59301284D1 (de) 1996-02-15
ES2081685T3 (es) 1996-03-16
ATE132614T1 (de) 1996-01-15
ZA93227B (en) 1994-05-23

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