EP0345407A1 - Verfahren zur Reglung des Durchsatzes an einem Schieber und Schieber für die Durchführung dieses Verfahrens - Google Patents

Verfahren zur Reglung des Durchsatzes an einem Schieber und Schieber für die Durchführung dieses Verfahrens Download PDF

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Publication number
EP0345407A1
EP0345407A1 EP88870106A EP88870106A EP0345407A1 EP 0345407 A1 EP0345407 A1 EP 0345407A1 EP 88870106 A EP88870106 A EP 88870106A EP 88870106 A EP88870106 A EP 88870106A EP 0345407 A1 EP0345407 A1 EP 0345407A1
Authority
EP
European Patent Office
Prior art keywords
opening
axis
movable plate
plate
fixed
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
EP88870106A
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English (en)
French (fr)
Other versions
EP0345407B1 (de
Inventor
Philippe Mutsaarts
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.)
Hepworth Refractories (Belgium) SA
Original Assignee
"societe Belge Des Produits Refractaires En Abrege "belref"
BELGE PROD REFRACTAIRES
Hepworth Refractories (Belgium) SA
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8200690&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0345407(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by "societe Belge Des Produits Refractaires En Abrege "belref", BELGE PROD REFRACTAIRES, Hepworth Refractories (Belgium) SA filed Critical "societe Belge Des Produits Refractaires En Abrege "belref"
Priority to AT88870106T priority Critical patent/ATE72528T1/de
Priority to ES198888870106T priority patent/ES2030535T3/es
Priority to DE8888870106T priority patent/DE3868404D1/de
Priority to EP88870106A priority patent/EP0345407B1/de
Priority to FI892813A priority patent/FI892813L/fi
Priority to BR898902718A priority patent/BR8902718A/pt
Priority to JP1145503A priority patent/JPH0230367A/ja
Publication of EP0345407A1 publication Critical patent/EP0345407A1/de
Priority to US07/544,056 priority patent/US5076476A/en
Publication of EP0345407B1 publication Critical patent/EP0345407B1/de
Application granted granted Critical
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/14—Closures
    • B22D41/22—Closures sliding-gate type, i.e. having a fixed plate and a movable plate in sliding contact with each other for selective registry of their openings
    • B22D41/38—Means for operating the sliding gate

Definitions

  • the present invention relates to a method for adjusting the flow rate of a liquid, in particular of a molten material, between a maximum flow rate and a zero flow rate, in a valve comprising at least one fixed plate and a mobile plate superposed, constantly kept in contact, each having at least one opening, this process consisting in placing said openings more or less opposite one another by moving the aforementioned movable plate.
  • valves or obturators currently known, in particular those used in the steel industry and in particular for continuous casting, are divided into two types, namely a first type of valve whose movable plate is moved in a rectilinear direction and in two directions to form a drawer system and a second type of valve whose movable plate is driven in a circular motion to present, in both directions, its opening or openings facing or away from an opening made in the fixed plate.
  • valves or shutters whatever their type, have first of all the serious disadvantage of causing, during movements of the movable plate and especially during movements aimed at reducing or interrupting the jet of liquid, wear which is located on a relatively small portion of the edges of the opening of the movable plate, which, on the one hand, requires increasing, as and as wear, the amplitude of movement of the movable plate to a given flow rate and, on the other hand, leads to an increasingly significant deflection of the jet, which has the consequence of increasing the turbulence and promoting the deposition of chemical compounds and / or of solidified metal under the fixed plate and in the collecting nozzle associated with the opening of the latter, with the effect of further increasing the disturbance of the jet and this, until the latter is interrupted.
  • valve make it necessary to replace movable plates, which are costly elements, while requiring the valve to be switched off and entailing a non-negligible labor cost, whereas these movable plates are not only partially worn or degraded.
  • valves have other serious drawbacks and in particular: significant risks of damage due to tensions which are not homogeneous due to the irregular heating of the various masses irregularly distributed around the opening of the movable plate and possibly the fixed plate; risks of degradation, for the same reason, due to different heat losses within the plates and, finally, risks of degradation due to localized heating in extremely small areas and always the same of the movable plate.
  • the object of the invention is to remedy these drawbacks and to provide a method which makes it possible to regularly distribute the wear over at least a large part of the periphery of the opening of the movable plate of the valve in order to increase its longevity. while improving in particular the qualities of the jet and eliminating the drawbacks due to disturbances thereof, with the significant possibility of varying, continuously or discontinuously, the zones subjected to heating.
  • said method consists in moving this movable plate in at least two intersecting directions which are determined to at least partially compare the openings of the fixed and movable plates, during the opening of the valve.
  • the invention also relates to a valve in the plates of which the tensions are homogeneous, these plates also having the advantage of offering a balanced heat distribution.
  • this valve has at least its movable plate which is symmetrical with respect to at least one plane passing through the axis of its opening.
  • the fixed and mobile plates of the valve are identical, which significantly reduces the manufacturing and operating costs.
  • the process according to the invention and illustrated in the drawings is intended for adjusting the flow rate of a liquid, more particularly of a molten material, in particular in a continuous casting installation, between a maximum flow rate and a zero flow rate using a valve 1 which comprises at least one fixed plate 2 and a mobile plate 3, these plates 2 and 3, which are superimposed, being kept constantly in contact and each having an opening 4 (for the fixed plate) and 5 (for the mobile plate).
  • a valve 1 which comprises at least one fixed plate 2 and a mobile plate 3, these plates 2 and 3, which are superimposed, being kept constantly in contact and each having an opening 4 (for the fixed plate) and 5 (for the mobile plate).
  • the movable plate 3 is disposed between two fixed upper 2 and lower 2 ′ plates in order to be in contact with each of the latter, the openings 4 and 4 ′ of the fixed plates being coaxial and either of identical sections (see figure 10), or of different sections (see figure 11).
  • the opening 4 ′ of the fixed plate 2 ′ has a cross section greater than that of the opening 4 of the fixed plate 2 so that the liquid contained in the opening 5 of the movable plate 3, the cross section of which is identical to that from the opening 4 of the fixed plate 2, can escape through the opening 4 ′ after the valve has closed.
  • This feature is important when the valve is used for casting molten metal, because it prevents metal from solidifying in the opening 5 of the movable plate 3 after closing the valve and rendering the latter unusable during a next opening of the valve, because of the plug created in the aforementioned opening 5.
  • the same result could be obtained, as shown in Figure 10, by using two fixed plates 2 and 2 ′ whose openings 4 and 4 ′ have the same section.
  • an opening 5 is then provided having its orifice facing the plate 2 which has an area equal to that of the opening 4 of the plate 2 while its orifice facing the plate 2 ′ has an area greater than that of the opening 4 ′ of the fixed plate 2 ′.
  • plates 2, 2 ′ and 3 which are symmetrical with respect to at least one plane passing through the axis 8, 11 of their opening 4.4 ′ and 5.
  • plates 2, 2 ′ and 3 which are symmetrical with respect to at least one plane passing through the axis 8, 11 of their opening 4.4 ′ and 5.
  • plates 2, 2 ′ and 3 which are symmetrical with respect to at least one plane passing through the axis 8, 11 of their opening 4.4 ′ and 5.
  • plates 2, 2 ′ and 3 which are symmetrical with respect to at least one plane passing through the axis 8, 11 of their opening 4.4 ′ and 5.
  • the method according to the invention consists in moving, as shown in FIG. 1, this movable plate 3 following two intersecting rectilinear directions shown diagrammatically by the axis lines 6 and 7 and which are determined to bring, when the valve 1 opens, partially and completely opposite, the openings 4 and 5 of the fixed plates 2 and movable 3.
  • this movable plate 3 following two intersecting rectilinear directions shown diagrammatically by the axis lines 6 and 7 and which are determined to bring, when the valve 1 opens, partially and completely opposite, the openings 4 and 5 of the fixed plates 2 and movable 3.
  • the rectilinear direction 6 intersects the axis 8 of the opening 4 of the fixed plate and the circular direction 7 has its center 9 located on the aforementioned axis 8;
  • the straight direction 6 cuts the axis 8 of the opening 4 of the fixed plate 2 while the circular direction 7 cuts or not this axis 8 and has its center 9 which is located inside the projection of the opening 4 of the fixed plate 2 on the movable plate 3;
  • the straight direction 6 cuts the axis 8 of the opening 4 of the fixed plate while the circular direction 7, which cuts or not this axis 8, has its center 9 which is located outside of the projection of the opening 4 of the fixed plate on the movable plate 3;
  • the circular direction 7 intersects the axis 8 of the opening 4 of the fixed plate and has its center 9 which is located outside the projection of the opening 4 on the movable plate 3, while the rectilinear direction cuts or not this axis 8.
  • the method according to the invention allows, when the openings 4 and 5 of the fixed and movable plates are not completely facing each other in order to throttle the jet, in a drawer system, as shown in FIGS. 4 and 7, just as in the system as illustrated in FIG. 9 and which will be described below, of varying, step by step or continuously, the zone 10 of the movable plate in contact with the molten metal, so as to obtain a better balancing of tensions in the moving plate.
  • the movable plate 3 is moved in a rectilinear direction 6 which intersects the axis 8 of the opening 4 of the fixed plate 2 and in a secant circular direction 7 to direction 6 and who has its center 9 which is located on the axis 11 of the movable plate 3.
  • the movements of the movable plate 3 in the above directions can be programmed to either be carried out simultaneously, or be carried out successively in a determined order or not, these movements can also be carried out, for some or all of the above directions, in the both directions.
  • the valve 1 according to the invention is shown diagrammatically in FIGS. 5 to 9, either by its two fixed 2 and mobile 3 plates and by its means 12 making it possible to move the mobile plate 3 in at least two secant directions 6 and 7 above, or by the axis 8 of the opening 4 of the fixed plate 2, by the movable plate 3 and by said means 12.
  • the valve 1 shown in FIG. 5 is provided with means 12 which make it possible to move the movable plate 3 in rectilinear directions 6, 6 ′ ...- n and concentric circular directions 7,7 ′ .... 7 n such as described above and illustrated in FIG. 2.
  • These means 12 consist, on the one hand, of a first jack 13, mounted for rotation about a fixed axis 14 which is parallel to the axis 11 of the opening 5 of the movable plate 3, the free end of the piston rod 15 of which carries the movable plate 3 so that the axis 16 of the jack 13 intersects the axis of the opening 5 of the movable plate 3 and, on the other hand, by a second cylinder 17, whose axis 18 is parallel to the axis 16 of the cylinder 13 and whose cylinder 19 is fixed to the cylinder 20 of said cylinder 13, which has the free end of its piston rod 21 which moves in a horizontal buttonhole 22 produced in a fixed part 23.
  • the valve 1 shown in Figure 6 is provided with means 12 for moving the movable plate 3 in rectilinear directions 6, 6 ′ ... 6 n and concentric circular directions 7,7 ′ ... 7 n as described above and shown in figure 3.
  • These means 12 comprise a slide 24 in which the movable plate 3 is fixed and which is mounted, so as to be able to move parallel to itself, in a frame 25 in the form of a quadrilateral at right angles.
  • This slide 24 is fixed to the end of the piston rod 26 of a jack 27 whose axis intersects the axis of the opening 5 of the movable plate 3 and which is parallel to one of the sides of the frame 25.
  • This frame 25 and the cylinder 28 of the jack 27 are fixed to a circular ring 29 whose axis is parallel to the axis of the opening 5 of the movable plate 3 or coincides with this latter axis and this, depending on the position occupied by the slide 24 relative to the frame 25 with which it cooperates, a gear motor 30, which is fixed, being provided to drive the crown 29, as well as the frame 25 and the jack 27 which are fixed there, around its axis .
  • FIG. 7 shows a valve 1 according to the invention, the above-mentioned means 12 making it possible to move the movable plate 3 in the rectilinear direction 6 intersecting the axis 11 of the opening 5 of the movable plate 3 and in a circular direction 7 whose the center 9 is located on this axis 11 (see Figure 4).
  • This movable plate 3 is mounted on a support 31 arranged so that it can rotate freely around the aforementioned axis 11.
  • the support 31 is slidably mounted on a support 32, on which it can move freely and parallel to itself in the above-mentioned rectilinear direction 6 and is controlled by the piston rod 33 of a jack 34, which is fixed and whose axis is perpendicular to the axis 11 of the opening 5.
  • a ring gear 35 is associated with the periphery of the movable plate 3 and is coaxial with the opening 5, an endless screw 36 parallel to the direction 6 being provided to drive in rotation, under the control of a gear motor 37, the crown and the movable plate 3 which is fixed there around the axis 11.
  • the valve 1 shown in FIG. 8 is a variant of the valve illustrated in FIG. 5.
  • the movable plate 3 is fixed, at 38 and 39, to the piston rod 40 of a jack 41 whose cylinder is pivotally mounted around a fixed axis 42 parallel to the axis 11 of the opening 5 of the movable plate 3, the axis of the jack 41 being perpendicular to said axis 11.
  • the end 43 of the piston rod 40 is articulated, at 44 and around an axis parallel to the axis 11, at the free end of the piston rod of a jack 46 whose cylinder is pivotally mounted around a fixed axis 47, parallel to axis 11.
  • the valve 1 illustrated in Figure 9 has a movable plate 3 whose movements are caused by means 12 which include a first frame 48, in the form of a quadrilateral whose angles are straight, on one side of which is mounted a worm 49 arranged to move the movable plate 3 in the first frame 48, by means of a nut 53 fixed to the support 54 of the plate 3 in a direction parallel to this side 50.
  • This frame 48 is mounted in a second fixed frame 51, in the form of a quadrilateral whose angles are straight, on one side of which is mounted an endless screw 52 arranged to move the frame 48 in the frame 51, by means of a nut 55 fixed to the frame 48, in a direction perpendicular to the side 50 said frame 48 above, the axis of the worms 49 and 52 being perpendicular.
  • the aforementioned zone 10 of the movable plate 3 in contact with the molten metal in a manner analogous to that shown in FIGS. 4 and 7, the movable plate can be rotated 3, around the axis 11 of its opening 5, in its support 54.
  • valve When the valve is used for molten metal, provision is advantageously made, as shown in FIG. 10, in at least one of the plates 2, 2 ′ and 3, a porous insert 56 through which a gas, such as l 'argon, under pressure.
  • This insert which leads to a gas supply duct, not shown, surrounds the opening of the plate, over at least a significant part of its thickness.
  • the movable plate 3 used in the aforementioned valves will advantageously be encircled by a metal jacket which will be provided with connecting members to the aforementioned means 12 ensuring the movements of said movable plate 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sliding Valves (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
  • Feeding And Guiding Record Carriers (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Fluid-Driven Valves (AREA)
EP88870106A 1988-06-09 1988-06-09 Verfahren zur Reglung des Durchsatzes an einem Schieber und Schieber für die Durchführung dieses Verfahrens Expired - Lifetime EP0345407B1 (de)

Priority Applications (8)

Application Number Priority Date Filing Date Title
AT88870106T ATE72528T1 (de) 1988-06-09 1988-06-09 Verfahren zur reglung des durchsatzes an einem schieber und schieber fuer die durchfuehrung dieses verfahrens.
ES198888870106T ES2030535T3 (es) 1988-06-09 1988-06-09 Procedimiento de regulacion de caudal en una valvula de compuerta y valvula de compuerta para la puesta en practica de este procedimiento.
DE8888870106T DE3868404D1 (de) 1988-06-09 1988-06-09 Verfahren zur reglung des durchsatzes an einem schieber und schieber fuer die durchfuehrung dieses verfahrens.
EP88870106A EP0345407B1 (de) 1988-06-09 1988-06-09 Verfahren zur Reglung des Durchsatzes an einem Schieber und Schieber für die Durchführung dieses Verfahrens
FI892813A FI892813L (fi) 1988-06-09 1989-06-08 Foerfarande foer reglering av en ventils stroemningsmaengd och ventil foer tillaempning av foerfarandet.
BR898902718A BR8902718A (pt) 1988-06-09 1989-06-08 Processo de regulagem de debito em uma valvula e valvula para a execucao do processo
JP1145503A JPH0230367A (ja) 1988-06-09 1989-06-09 弁における流量制御方法およびこれを使用する弁
US07/544,056 US5076476A (en) 1988-06-09 1990-06-26 Method for controlling a flow rate in a valve and a valve for the application of said method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP88870106A EP0345407B1 (de) 1988-06-09 1988-06-09 Verfahren zur Reglung des Durchsatzes an einem Schieber und Schieber für die Durchführung dieses Verfahrens

Publications (2)

Publication Number Publication Date
EP0345407A1 true EP0345407A1 (de) 1989-12-13
EP0345407B1 EP0345407B1 (de) 1992-02-12

Family

ID=8200690

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88870106A Expired - Lifetime EP0345407B1 (de) 1988-06-09 1988-06-09 Verfahren zur Reglung des Durchsatzes an einem Schieber und Schieber für die Durchführung dieses Verfahrens

Country Status (8)

Country Link
US (1) US5076476A (de)
EP (1) EP0345407B1 (de)
JP (1) JPH0230367A (de)
AT (1) ATE72528T1 (de)
BR (1) BR8902718A (de)
DE (1) DE3868404D1 (de)
ES (1) ES2030535T3 (de)
FI (1) FI892813L (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0617139A (ja) * 1992-05-27 1994-01-25 Sumitomo Metal Ind Ltd 自動車外装用高強度鋼板の製造方法
EP1707291A1 (de) * 2005-03-10 2006-10-04 Tech-Gate S.A. Schiebeverschluss

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2830840B2 (de) * 1977-07-13 1981-04-09 Nippon Kokan K.K., Tokyo Verfahren und Vorrichtung zum Regeln des Badspiegels beim Stranggießen
DE3211787A1 (de) * 1981-03-30 1983-02-03 Zimmermann & Jansen GmbH, 5160 Düren Verfahren zur steuerung von ausgussschiebern von giessgefaessen fuer metallurgische abguesse und fuer ein derartiges verfahren verwendbare einrichtung zur exakten stellungsrueckmeldung eines arbeitskolbens
DE3432131A1 (de) * 1983-09-07 1985-03-21 USS Engineers and Consultants, Inc., Pittsburgh, Pa. Verfahren und vorrichtung zur regelung eines fluessigkeitsspiegels

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4896801A (en) * 1967-07-11 1990-01-30 Flo-Con Systems, Inc. Method for controlling the discharge channel of a casting container (tundish) for metallic meltings, and a device for carrying out the method
CH649610A5 (de) * 1980-09-24 1985-05-31 Stopinc Ag Verschlussplattenpaar fuer einen schiebeverschluss.
DE3433558C2 (de) * 1983-11-18 1986-07-31 Stopinc Ag, Baar Schieberverschluß für den Ausguss metallurgischer Gefäße
DE3423157C1 (de) * 1984-06-22 1985-06-20 Metacon AG, Zürich Feuerfestes Plattenpaar fuer schwenk- bzw. drehbewegliche Schiebeverschluesse
FR2631266B1 (fr) * 1988-05-13 1990-09-14 Detalle Edouard Obturateur de coulee a deplacement lineaire et symetrie axiale

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2830840B2 (de) * 1977-07-13 1981-04-09 Nippon Kokan K.K., Tokyo Verfahren und Vorrichtung zum Regeln des Badspiegels beim Stranggießen
DE3211787A1 (de) * 1981-03-30 1983-02-03 Zimmermann & Jansen GmbH, 5160 Düren Verfahren zur steuerung von ausgussschiebern von giessgefaessen fuer metallurgische abguesse und fuer ein derartiges verfahren verwendbare einrichtung zur exakten stellungsrueckmeldung eines arbeitskolbens
DE3432131A1 (de) * 1983-09-07 1985-03-21 USS Engineers and Consultants, Inc., Pittsburgh, Pa. Verfahren und vorrichtung zur regelung eines fluessigkeitsspiegels

Also Published As

Publication number Publication date
BR8902718A (pt) 1990-01-23
DE3868404D1 (de) 1992-03-26
US5076476A (en) 1991-12-31
ES2030535T3 (es) 1992-11-01
FI892813A7 (fi) 1989-12-10
FI892813L (fi) 1989-12-10
ATE72528T1 (de) 1992-02-15
EP0345407B1 (de) 1992-02-12
JPH0230367A (ja) 1990-01-31
FI892813A0 (fi) 1989-06-08

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