• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:

    公开号:SU965361A3
    申请号:SU792823407
    申请日:1979-10-01
    公开日:1982-10-07
    发明作者:Хартль Йоханн
    申请人:Фоест-Альпине Аг (Фирма)；
    IPC主号:
    专利说明:

    - one . . . The invention relates to the field (ferrous metallurgy, in particular, to devices for cutting off slag when metal is converted from a converter. A device for locking the converter hubs containing a fusible locking element with an outer conical surface and a drive for moving the locking element tl is known. Disadvantages of the device are low cut-off efficiency , increased wear of locking elements and unsatisfactory service conditions. The closest to the invention to the technical essence and the achieved result is the device for locking the tap hole containing a locking element with an axial channel for supplying gas and a conical part of the outer surface on the mouth of the channel, a pneumatic drive for supplying gas to the channel and a drive for moving the locking element mounted on the housing of the converter in the working position forms the inner surface of the annular gap 2. However, the device is characterized by insufficient efficiency of the cut-off of the donkey and low durability of the locking element when it is used in the converter high capacity. The purpose of the invention is to increase reliability and durability. This goal is achieved by the fact that in the device for closing the tapways of the converter containing a locking element with an axial channel for supplying gas and a conical part of the outer surface from the mouth of the channel, a pneumatic actuator for supplying gas to the channel and a movement actuator of the locking element mounted on the converter housing has a conical part of the outer surface of the locking element is made from the mouth of the channel to a height equal to 1.0-2.5 of the diameter of the channel in its mouth and with an angle of inclination of the generatrix of the cone to the axis of the channel 7.5-35 °, the rest of the The outer surface of the locking element on the side of the mouth of the kangsha is made in the form of a hemisphere. The diameter of the outlet from the mouth of the opening of the locking element is 1.3 times the diameter of the tap. The diameter of the hemisphere of the locking element is 1.5 times the diameter of the notch. The locking element can be made of cast iron. FIG. 1 shows a sectional converter at the moment of steel discharge, general view; in fig. 2 - section of the locking element on an enlarged scale. In converter 1 there is a melt of steel 2 with a layer of slag 3 above it. The converter has a notch 4. Under the converter is a casting bucket 5. To shut off the notch serves a locking element 7 fixed to the pivot arrow 6, to to which the pneumatic actuator 8 is attached. Repeated arrow 6 "is hingedly connected to the casing 9 of the converter 1 and can be moved by means of a 11 cylinder 10 working in both directions with the working fluid, sleeping gear and mounted on the casing onvertera, by the customer, CMV gear 11 provided on the swivel direction b limiter 1 not allow zapirayuscheymu element completely block the tap hole, which remains grace p annulus 13. Locking notch occurs as follows. As the steel is drained into the casting ladle 5, slag 3 begins to flow through tap 4. Thanks to pyrometer 14, which controls the outflow of flow 15, the impulse is received by the amplifier 16 and the relay 17. The relay then sends an electrical signal to the solenoid valves 20-22 installed in the supply lines 18,19,8 of the cylinder 10 and the locking element 7. The solenoid valve 21 opens and the cylinder 10 with the working fluid retracts the turning arrow to the closing position, The hatched in FIG. 1. The solenoid valve 22 of the supply line of the locking element is temporarily activated. Upon reaching the closing position, the escaping compressed gas draws air through the annular gap 13 in accordance with the ejector principle. A 1-pack of compressed gas and air is pushed aside into the converter and then merged into its own / Slag ladle. Air, argon or nitrogen can be used as compressed gas. . The locking element 7 in the embodiment shown in FIG. 1, the retracted position for cooling is washed by the compressed gas, while the gas pressure is significantly lower than the pressure at which gas is supplied through the channel in the closed position of the locking element. The zapirakndiy element made of cast iron has an outer casing formed by a spherical (spherical) surface 23, which on the side of the mouth passes into the surface 24, having the shape of a truncated cone. The angle of the solution 25 forming a truncated cone is 47. The height of the truncated cone is approximately 1.4 times the diameter of the channel at its mouth. The diameter of the channel in the locking element is one third of the diameter of the notch 4 (Fig. 1), the diameter of the spherical surface 23 of the locking element 7. 1.5 times the diameter of the notch. Due to the special shape of the locking element 7, high strength is achieved even at the highest heat load / the slag retention effect is improved, i.e. less compressed gas is required to keep the slag shut-off element. In addition, the locking element is cheap because it is manufactured by cast iron, and further processing may not be required. The fastening of the locking element is carried out by means of bolts on the support ring mounted with the possibility of adjustment on the pivot arrow, as a result of which a quick replacement of the locking element is ensured. For precise adjustment of the locking element in relation to the notch is the direction of the hinge. 1 To protect the cylinder with the working fluid, it is installed in a heat shield that is provided with an air shower for cooling. It is advisable to carry the pipeline with compressed air through the trunnions of the support ring. Forglula of the Invention 1. A device for locking the tapways of the converter, comprising a locking element with an axial channel for supplying gas and a tapered part of the outer curvature: from the mouth of the channel, a pneumatic actuator for supplying gas to the channel and a swinging movement of the locking element mounted on the converter housing in the working position, the locking element forms an annular gap with the inner surface of the tap hole, characterized in that, in order to increase its reliability and durability, the conical part of the locking element a channel formed by ust a height equal to the bore diameter of 1.0-2.5 in his mouth with the angle of inclination of the generatrix of the cone to the channel axis 7,5-35 °, while the remaining portion of the outer surface
    the locking element from the mouth of the channel is made in the form of a hemisphere. .
    2. Device POP.1, characterized in that the diameter of the exit from the side of the mouth of the opening of the locking element is equal to 1/3 of the diameter of the tap.
    3. The device according to claims 1-2, characterized in that the diameter of the hemisphere of the locking element is 1.5 times the diameter of the notch. .
    4. The device according to claims 1 to 3, about t l and so that the locking element is made of cast iron.
    ; Sources of information taken into account in the examination
    1. For the UK 1 1551629, cl. F 4 B, 1978. 2. Application for Germany I 2639712,, cl. F 27 D 3/14, 1977.
    Rag.
    权利要求:
    Claims (2)
    [1]
    1. UK Application | No. 1551629, CL F 4 B, 1978.
    1. A device for locking the notch of the converter, comprising a locking element with an axial channel for supplying gas and a conical part of the outer surface from the side of the channel mouth, a pneumatic actuator for supplying gas to the channel and an oscillating movement drive of the locking element mounted on the converter housing, the locking element being in operation the position forms an annular gap with the inner surface of the notch, characterized in that, in order to increase its reliability and durability, the conical part of the locking element is made from the mouth to Nala equal to a height of 1.0-2.5 diameter channel in his mouth with the angle of inclination of the generatrix of the cone to the channel axis 7,5-35 °, and the remainder of the outer surface of the locking member from the channel mouth is in the form of a hemisphere. .
    2. The device according to claim 1, characterized in that the diameter of the outlet from the mouth of the opening of the locking element is 1/3 of the diameter of the tap hole.
    3. The device according to claims 1 to 2, characterized in that the hemisphere diameter of the locking element is 1.5 times the diameter of the notch.
    4. The device according to claims 1 to 3, characterized in that the locking element is made of cast iron.
    _; Sources of information, 5 taken into account during the examination
    [2]
    '2. Application of Germany I "2639712,’ °, cl. F 27 D 3/14, 1977.
    FIG. 2
    类似技术:
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    同族专利:
    公开号 | 公开日
    AT357183B|1980-06-25|
    JPS6032685B2|1985-07-30|
    JPS5550417A|1980-04-12|
    DE2961076D1|1981-12-24|
    ATA714778A|1979-07-15|
    CA1113716A|1981-12-08|
    US4232855A|1980-11-11|
    EP0010082B1|1981-10-21|
    EP0010082A1|1980-04-16|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    LU61204A1|1970-06-26|1972-03-24|
    US4007035A|1973-05-31|1977-02-08|United States Steel Corporation|Method of using an expendable tap hole tuyere in open hearth decarburization|
    CA997142A|1973-09-27|1976-09-21|Noranda Mines Limited|Furnace tapping method and apparatus|
    AT350090B|1975-12-17|1979-05-10|Voest Ag|PROCEDURE AND DEVICE FOR LOCKING THE TUBE HOLE OF A METALLURGICAL VESSEL|DE2921742C2|1979-05-29|1983-09-29|Mannesmann AG, 4000 Düsseldorf|Electric metal melting furnace with a tap opening in the bottom|
    AT381583B|1984-06-01|1986-11-10|Voest Alpine Ag|TILTABLE METALLURGICAL TUBE|
    US4679773A|1985-09-30|1987-07-14|Wunsche Edgar R|Horizontal tapping furnace and method of operation|
    US5105873A|1991-09-06|1992-04-21|Warmington C Edward|Casting operation emergency shut-off apparatus|
    AT407399B|1999-05-21|2001-02-26|Voest Alpine Ind Anlagen|METHOD FOR CLOSING AND OPENING A PUNCH HOLE IN A METALLURGICAL VESSEL|
    AT408965B|2000-01-27|2002-04-25|Voest Alpine Ind Anlagen|DEVICE FOR CLOSING A TAPPING HOLE OF A METALLURGICAL VESSEL|
    CN1323146C|2005-06-24|2007-06-27|西北工业大学|Borontroixide-silicon carbide self-lubricating coating and its preparing method|
    CH699511A2|2008-09-05|2010-03-15|Stopinc Ag|Copper anode furnace with sliding closure.|
    WO2012040558A2|2010-09-23|2012-03-29|Gillespie + Powers, Inc.|Furnace tap hole flow control and tapper system and method of using the same|
    DE102018216285A1|2018-09-25|2020-03-26|Sms Group Gmbh|Slag stopper|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    AT714778A|AT357183B|1978-10-04|1978-10-04|DEVICE FOR CLOSING THE STITCH HOLE OF A METALLURGICAL VESSEL|
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