EP0372098B1 - Fixage de lance pour une lance compacte - Google Patents

Fixage de lance pour une lance compacte Download PDF

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Publication number
EP0372098B1
EP0372098B1 EP88120123A EP88120123A EP0372098B1 EP 0372098 B1 EP0372098 B1 EP 0372098B1 EP 88120123 A EP88120123 A EP 88120123A EP 88120123 A EP88120123 A EP 88120123A EP 0372098 B1 EP0372098 B1 EP 0372098B1
Authority
EP
European Patent Office
Prior art keywords
lance
valve disc
holder
valve
oxygen
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
EP88120123A
Other languages
German (de)
English (en)
Other versions
EP0372098A1 (fr
Inventor
Wolfram Dipl.-Ing. Aschemann
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.)
Beda Oxygentechnik Armaturen GmbH
Original Assignee
Beda Oxygentechnik Armaturen GmbH
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 Beda Oxygentechnik Armaturen GmbH filed Critical Beda Oxygentechnik Armaturen GmbH
Priority to AT88120123T priority Critical patent/ATE97167T1/de
Priority to EP88120123A priority patent/EP0372098B1/fr
Priority to DE88120123T priority patent/DE3885616D1/de
Priority to TR300/89A priority patent/TR23539A/xx
Priority to KR1019890006966A priority patent/KR930011669B1/ko
Priority to AU36498/89A priority patent/AU611571B2/en
Priority to US07/373,876 priority patent/US5131636A/en
Priority to CA000605280A priority patent/CA1336539C/fr
Publication of EP0372098A1 publication Critical patent/EP0372098A1/fr
Application granted granted Critical
Publication of EP0372098B1 publication Critical patent/EP0372098B1/fr
Priority to SG76494A priority patent/SG76494G/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/42—Constructional features of converters
    • C21C5/46—Details or accessories
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/42—Constructional features of converters
    • C21C5/46—Details or accessories
    • C21C5/4606—Lances or injectors
    • C21C5/462—Means for handling, e.g. adjusting, changing, coupling

Definitions

  • the invention relates to a lance holder for an oxygen lance with a large diameter, with a clamping head which fixes the lance and a slag return safety device arranged in the holder body between the lance and oxygen hose, which is designed as a valve which is pressed into the valve seat when slag penetrates as a result of fuses destroyed thereby.
  • Lance holders with a corresponding clamping head and a slag return safety device serve to hold the lance required for freshening securely and, on the other hand, not to let slag returning when the blowing process ends or is interrupted, until it reaches oxygen.
  • DE-C 2 327 595 is assigned a gas-permeable sintered metal disc just before the oxygen hose, which is intended to prevent the slag return. This mechanical shut-off of the slag return does not meet the demands placed on it where larger amounts of oxygen have to be enforced, because a sintered metal disc then naturally leads to difficulties.
  • the valve arrangement arranged in front of the gas-permeable disk represents a second slag return safety device, this valve closing when the seal arranged above is burnt due to a slag return.
  • slag return safeguards consisting of valve cones which can be displaced relative to one another, the corresponding valve cone being pressed into the sealing surface via a fuse which melts when it comes into contact with the slag, in order to prevent the flow of the slag and at the same time the further flow of oxygen. It is disadvantageous that problems also occur here if the lance is released from the lance holder by mistake or by being pushed, as a result of which the oxygen flowing out is struck loaded lance holder and hose end comes. There is a risk to the operators. Particularly in the case of lances with a large diameter, the lance may inadvertently fall out due to the great weight of the lance and inadequate fixation by the clamping head and thus endanger the manner described above.
  • the invention has for its object to safely prevent the dangerous hitting of the lance holder equipped with a slag return safety device and hose when the lance slipped out of the lance holder.
  • the slag backflow preventer is preceded by a valve disk which, with the inserted lance, is designed to be displaceable against the force of a spring and, for this purpose, a buffer sleeve known per se projecting in the direction of the lance and adapted to the lance diameter and against a narrowing of the inner bore , has oblique sealing surfaces.
  • a spiral compression spring is arranged between the buffer sleeve connected to the valve disk and the upper edge of the constriction. This design ensures that the lance is inserted exactly centered in the direction of the valve disk when it is inserted through the clamping head, so that the valve disk is also pushed out evenly from its sealing position.
  • the spiral compression spring which is cleverly part of the actual buffer sleeve, ensures that the valve disc is not pushed back further than absolutely necessary. Rather, the operator notices very quickly when inserting the lance that he has shifted the valve disc and thus opened the supply for the oxygen in preparation.
  • the size of the buffer sleeve is somewhat shorter than the corresponding recess or inner bore in the holder body, so that a corresponding signal is sent to the operator by the corresponding push.
  • the spiral compression spring also prevents the valve disc from tilting due to its safe guidance. The connection of the buffer sleeve and the valve disc ensures that the valve disc always sits securely, since it is loaded by two springs.
  • the invention provides that the valve disk and the buffer sleeve are releasably connected to one another by screws.
  • the valve disk as such can be inserted into the holder body from one side while the actual one Buffer sleeve is inserted from the other side.
  • a secure arrangement and position is then immediately secured by the connection via the screws, the valve disk being loaded via the spring which is supported on or on a circlip and at the same time via the spiral compression spring.
  • the corresponding screws can be easily reached and loosened or tightened from the outside.
  • the buffer sleeve has radial, large diameter wall recesses at the level of the valve disc that extend approximately to the upper edge of the constriction.
  • the gas can thus flow with the slag return valve arranged behind the valve disk open and past it and past the valve disk and the buffer sleeve into the buffer sleeve and through it through the lance in order to reach the melt in a guided manner.
  • the invention is characterized in particular by the fact that a very secure securing device for lance holders, covering all eventualities, is created, wherein optimization is advantageously achieved by the multiple securing device.
  • a compact lance is achieved which, due to the skillful arrangement and assignment of the individual valves and terminations, has a very short and small diameter, but which above all also works very safely.
  • the lance holder (1) shown in FIG. 1 is one with which lances having a relatively large diameter are to be held in order to be connected to the oxygen hose in this way.
  • the lance holder (1) has a tubular, elongated holder body (2), the upper end of which forms the clamping head (3) and the lower end of which forms the rear part (4) which is required for connection to the oxygen hose.
  • the slag return safety device (5) is accommodated within the tubular holder body (2) and will be explained in more detail later.
  • the hose is connected to the screw connection (6).
  • the collet is designated, via which the corresponding inserted tube or lance is fixed on and in the lance holder (1).
  • the O-ring (8) seals upwards.
  • a grub screw is designated, while (10) is the sealing sleeve, in which a seal (11) is housed, which when the lance is drawn in or pushed in, takes care of the necessary sealing, so that oxygen cannot flow past the side of the lance.
  • (12) is the pressure sleeve and (13) the threaded ring, with the latter and the clamping piece (14) and the lever (15) causing the lance holder (1) to be clamped in this way to make the lance holder (1) and To connect lances with each other.
  • a valve disc (18) is arranged approximately in the middle of the lance holder (1), via which, when the lance is not inserted, the passage of the lance holder (1), ie its inner bore (23), is closed, as shown in FIG. 1.
  • the valve disc (18) is loaded by a spring (19) so that, as mentioned, it then seals in the sealing seat when a lance is not inserted.
  • the valve disc (18) is connected to a buffer sleeve (20) and can be detached via screws (31) in order to move the valve disc (18) through the inserted lance.
  • valve disk (18) is brought out of contact with the sealing surface (21) via the buffer sleeve (20) pushed the constriction (22). Sealing surface (21) and shoulder (24) are then no longer in contact, so that the oxygen gas coming from below can flow past here without difficulty.
  • Fig. 2 clarifies that both the sealing surface (21) and the shoulder (24) have appropriate bevels in order to achieve a flat seal in this way.
  • the buffer sleeve (20) is correspondingly fitted into the inner bore (23), an area being created in which the buffer (29) of the buffer sleeve (20) acts on the upper edge (28) of the constriction (22) when through the inserted lance is intended to open the valve disc (18) accordingly.
  • the buffer (29) is designed here as a spiral compression spring (30) which ensures that when the buffer sleeve (20) is inserted, the operator recognizes in good time that the lance is inserted sufficiently far into the lance holder (1) due to increasing resistance is.
  • the spring (19) of the valve disc (18) is supported on the valve disc (18) opposite side on a circlip (32).
  • the circlip is visible in both FIG. 1 and FIG. 2. It is in a ring shape Recess inserted in the housing.
  • wall recesses (33, 34) are made in the wall of the buffer sleeve (20) in order to facilitate the flow of oxygen or the flow into the interior of the lance.
  • the wall recesses (33, 34) have a large cross section in order to be able to pass sufficient quantities of oxygen gas through them.
  • Screen grub screw (35) is fixed in a conical screen via a solder joint (36).
  • the solder joint (36) is designed and dimensioned such that when slag occurs, the sieve grub screw (35) is loosened so that the valve cone (38), which can be seen in FIG. 1, snaps into the corresponding sealing seat.
  • the conical sieve (37) ensures that the slag is initially stopped, at least until the soldering point (36) is destroyed and the valve is thus closed.
  • the valve cone (38) is loaded by the spring (39), which is supported on the inner part of the slag return safety device (5).
  • This slag return safety device (5) has a guide (40) for the valve cone (38), on which the free end (41) of the sieve grub screw (35) acts from the other side and from the inside the centering pin (43) which fits into the corresponding sleeve (44 or 45) engages in the valve plug (38) or in the valve plug (46). Since the outer ring (49) of the guide (40) is fixed when the holder body (2) and the rear part (4) are screwed together, precise guiding of both valve cones (38, 46) via the centering pin (43) is ensured.
  • the spring (47) serves to load the valve cone (46). Since this valve cone is displaced by the oxygen pressure, the spring (47) is designed softer than the spring (39). The latter spring (39) must quickly and safely penetrate the slag Press the valve plug (38) into the valve seat. In an emergency, this process is supported by the oxygen still flowing out. The necessary sealing is provided in the area of the outer ring (49) via the O-ring (48), so that even here, despite the high pressure of oxygen, no gases can escape.
  • Fig. 2 illustrates the moment when the lance (50) is inserted into the holder body (2) or the lance holder (1).
  • the buffer sleeve (20) has not yet been moved here and, accordingly, the valve disk (18) is still drawn in the closed position. If the lance (50) is now pushed further, the valve disk (18) is moved out of the sealing seat via the buffer sleeve (20). Then, when oxygen gas is supplied and the valve cone (46) is shifted accordingly, oxygen gas can flow through the holder body (2) and the lance (50).
  • the valve disc (18) follows due to the spring (19) loading the valve disc, which now automatically moves into the valve seat pushes in. This immediately ends the oxygen gas supply and the lance holder and hose are prevented from hitting, which can be very dangerous, especially for lance holders with a large cross section.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
  • Dental Preparations (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Claims (5)

  1. Support à lance pour une lance à oxygène de grand diamètre avec une tête de serrage pour la fixation de la lance et un dispositif antiretour de scories monté dans le corps du support entre la lance et le flexible à oxygène, se présentant sous la forme d'une soupape qui, lors de la pénétration des scories, suite à la destruction des dispositifs de sécurité en résultant, est comprimée dans le siège de la soupape,
    caractérisé par la fait que un disque de soupape (18) est monté en amont du dispositif antiretour de scories (5), lequel disque, avec l'introduction de la lance (50), est formé de sorte à être repoussé contre la force d'un ressort (19) et présente une douille-tampon (20) connue en soi se trouvant en saillie dans la direction de la lance et adaptée au diamètre de la lance ainsi que des surfaces d'étanchéité (21) à l'oblique et prenant appui contre un rétrécissement (22) de l'alésage intérieur (23).
  2. Support à lance selon la revendication 1,
    caractérisé par le fait que un ressort à pression spiralé (30) est monté entre la douille-tampon (20) solidaire du siège de la soupape (18) et l'arête supérieure (28) du rétrécissement (22).
  3. Support à lance selon la revendication 1,
    caractérisé par le fait que le disque de la soupape (18) et la douille-tampon (20) sont reliés entre eux par des vis (31) de manière amovible.
  4. Support à lance selon la revendication 1,
    caractérisé par le fait que le ressort (19) qui sollicite le disque de la soupape (18) est tendu entre le disque de la soupape et un anneau de retenue (32).
  5. Support à lance selon la revendication 1,
    caractérisé par le fait que la douille-tampon (20) présente, au niveau du disque de la soupape (18), des évidements de parois (33, 34) radiaux de grande section allant approximativement jusqu'a l'arête supérieure (28) du rétrécissement (22).
EP88120123A 1988-12-02 1988-12-02 Fixage de lance pour une lance compacte Expired - Lifetime EP0372098B1 (fr)

Priority Applications (9)

Application Number Priority Date Filing Date Title
AT88120123T ATE97167T1 (de) 1988-12-02 1988-12-02 Lanzenhalter fuer kompaktlanze.
EP88120123A EP0372098B1 (fr) 1988-12-02 1988-12-02 Fixage de lance pour une lance compacte
DE88120123T DE3885616D1 (de) 1988-12-02 1988-12-02 Lanzenhalter für Kompaktlanze.
TR300/89A TR23539A (tr) 1988-12-02 1989-04-03 Kombine suergue tutucusu
KR1019890006966A KR930011669B1 (ko) 1988-12-02 1989-05-24 콤팩트 랜스용 랜스홀더
AU36498/89A AU611571B2 (en) 1988-12-02 1989-06-16 Lance holder for a compact lance
US07/373,876 US5131636A (en) 1988-12-02 1989-06-29 Lance holder for a compact lance
CA000605280A CA1336539C (fr) 1988-12-02 1989-07-11 Porte-lance pour lance compacte
SG76494A SG76494G (en) 1988-12-02 1994-06-09 Lance holder for a compact lance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP88120123A EP0372098B1 (fr) 1988-12-02 1988-12-02 Fixage de lance pour une lance compacte

Publications (2)

Publication Number Publication Date
EP0372098A1 EP0372098A1 (fr) 1990-06-13
EP0372098B1 true EP0372098B1 (fr) 1993-11-10

Family

ID=8199623

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88120123A Expired - Lifetime EP0372098B1 (fr) 1988-12-02 1988-12-02 Fixage de lance pour une lance compacte

Country Status (8)

Country Link
US (1) US5131636A (fr)
EP (1) EP0372098B1 (fr)
KR (1) KR930011669B1 (fr)
AT (1) ATE97167T1 (fr)
AU (1) AU611571B2 (fr)
CA (1) CA1336539C (fr)
DE (1) DE3885616D1 (fr)
TR (1) TR23539A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19547885C1 (de) * 1995-12-21 1997-09-11 Beda Oxygentech Armatur Lanzenmanipulator mit Pneumatik-Lanzenhalter
DE19903473B4 (de) * 1998-03-23 2006-10-26 Beda-Oxygentechnik Armaturen-Gmbh Lanzenhalter mit multifunktionalem Spannkopf

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2210487A1 (fr) * 1995-01-26 1996-08-01 Foseco International Limited Bassin de coulee
IT1311080B1 (it) * 1998-03-23 2002-02-28 Beda Oxygentech Armatur Supporto per lance con testa di serraggio multifunzionale.
DE102008012554B4 (de) * 2008-03-04 2011-12-22 Beda Oxygentechnik Armaturen Gmbh Lanzenhalter
DE102008019029A1 (de) * 2008-04-15 2009-10-22 Beda Oxygentechnik Armaturen Gmbh Lanzenhalter mit Mehrtoleranzen-Spannkopf
EP2482019B1 (fr) * 2011-01-31 2014-10-01 Siemens VAI Metals Technologies GmbH Support de lance de combustion pour soutenir une lance de combustion à l'aide d'un dispositif de manipulation
DE102012004515A1 (de) * 2012-03-06 2013-09-12 Beda Oxygentechnik Armaturen-GmbH Lanzenhalter mit Sicherung für ungerade, insbesondere gebogene Sauerstofflanzen
CN103255262B (zh) * 2013-05-27 2014-09-17 武汉北凯科技有限公司 一种氧枪防落制动装置
CN112322831B (zh) * 2020-11-10 2021-06-22 中南大学 一种电弧炉炼钢用炉渣热回收预热式氧枪及其应用方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1943699U (de) * 1964-12-07 1966-08-04 Helmut Held Spannfutter, insbesondere als brennrohrhalter.
DE2327595C2 (de) * 1973-05-30 1974-10-10 Fa. Manfred Schulz, 4032 Lintorf Rohrhalter, insbesondere für das Brennrohr einer Sauerstofflanze
DE7320339U (de) * 1973-05-30 1973-09-13 Schulz M Schweisstechnik Rohrhalter, insbesondere fur eine Sauerstofflanze
DE2447723C2 (de) * 1974-10-07 1975-11-13 Manfred 4032 Lintorf Schulz Rohrkörper für eine Sauerstofflanze
FR2410678A1 (fr) * 1977-12-03 1979-06-29 Schulz Manfred Poignee pour lance a oxygene
SU730817A1 (ru) * 1977-12-12 1980-04-30 За витель 730817 (II) Pfl№ ЯЯ И fi в А ЕЯЯ F Т Е Н N м №1 в 1е i i Устройство дл креплени фурмы

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19547885C1 (de) * 1995-12-21 1997-09-11 Beda Oxygentech Armatur Lanzenmanipulator mit Pneumatik-Lanzenhalter
DE19903473B4 (de) * 1998-03-23 2006-10-26 Beda-Oxygentechnik Armaturen-Gmbh Lanzenhalter mit multifunktionalem Spannkopf

Also Published As

Publication number Publication date
EP0372098A1 (fr) 1990-06-13
CA1336539C (fr) 1995-08-08
US5131636A (en) 1992-07-21
AU3649889A (en) 1990-06-07
AU611571B2 (en) 1991-06-13
TR23539A (tr) 1990-03-22
DE3885616D1 (de) 1993-12-16
KR900017712A (ko) 1990-12-19
ATE97167T1 (de) 1993-11-15
KR930011669B1 (ko) 1993-12-16

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