EP0494589B1 - Procédé et dispositif de manoeuvre et de blocage d'une porte, en particulier d'une vanne ou d'un obturateur - Google Patents

Procédé et dispositif de manoeuvre et de blocage d'une porte, en particulier d'une vanne ou d'un obturateur Download PDF

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Publication number
EP0494589B1
EP0494589B1 EP19910870004 EP91870004A EP0494589B1 EP 0494589 B1 EP0494589 B1 EP 0494589B1 EP 19910870004 EP19910870004 EP 19910870004 EP 91870004 A EP91870004 A EP 91870004A EP 0494589 B1 EP0494589 B1 EP 0494589B1
Authority
EP
European Patent Office
Prior art keywords
gate
jack
engagement
fixed member
fixing
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
EP19910870004
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0494589A1 (fr
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.)
"rotary Nozzle International Sa"
Hepworth Refractories (Belgium) SA
Original Assignee
"rotary Nozzle International Sa"
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
Application filed by "rotary Nozzle International Sa", Hepworth Refractories (Belgium) SA filed Critical "rotary Nozzle International Sa"
Priority to ES91870004T priority Critical patent/ES2062746T3/es
Priority to DE1991604023 priority patent/DE69104023T2/de
Priority to EP19910870004 priority patent/EP0494589B1/fr
Publication of EP0494589A1 publication Critical patent/EP0494589A1/fr
Application granted granted Critical
Publication of EP0494589B1 publication Critical patent/EP0494589B1/fr
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
    • 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
    • B22D41/28—Plates therefor
    • B22D41/34—Supporting, fixing or centering means therefor

Definitions

  • the object of the present invention is a method of operating and blocking a door, in particular a valve or a shutter, on a fixed member, in particular a container containing a molten material.
  • Valves or shutters of this kind can be fixed on the fixed member for example, on the one hand, by elements of the hinge type and, on the other hand, by fixing elements in the form of two tie rods articulated on the fixed member, passing through the valve and threaded to each receive a valve fixing nut.
  • fixing the valve on the fixed member by the aforementioned nuts it is necessary to tighten each nut separately and this goes against a balanced tightening if not at the cost of numerous maneuvers of short displacements of each successive nut. Even performed using a pneumatic screwdriver, these operations are tedious and do not exclude human error.
  • the invention aims inter alia to remedy these drawbacks and to provide a method which makes it possible to fix the door, in particular of the aforementioned valve or shutter, so that it occupies its fixing position after having carried out simple operations for placing door operating elements and door blocking elements.
  • These elements of operation and blocking according to the invention are easy to place for fixing the door and to inspect before use so that the intended fixing position for the door is obtained.
  • the invention also advantageously aims to provide a means of measuring for example the total force of the above internal springs in order to assess whether this force, after multiple heating of the springs, is still sufficient to ensure the above-mentioned tightness, or to check other anomalies such as wear of ball bearings etc. forming part of the valve. This control is thus possible for any element requested by the pressurization of the device according to the invention.
  • the invention also relates to a device for operating and blocking a door, in particular a valve or a shutter, on a fixed member, in particular a container containing a molten material.
  • the supply means of the device comprise a means for displaying the pressure of the fluid in the jack and / or a pressure detection means possibly capable of actuating a signal of warning to indicate a functioning or faulty state of the door and / or the fixing of the door.
  • Figure 1 is an elevational view, in section along the line I-I of Figure 2, of an embodiment of the device according to the invention.
  • Figure 2 is an elevational view in section along the line II-II of Figure 1, with partial broken.
  • FIG. 3 schematically represents an embodiment of means for supplying fluid for the device according to the invention.
  • FIGS. 1 and 2 A device for operating and blocking, for example a stop valve and for adjusting the flow rate of a molten metal contained in a ladle is shown with the general reference 1 in FIGS. 1 and 2.
  • This device 1 illustrates in As an example the device of the invention and is also used below to describe the process according to the invention.
  • the valve 2 itself is well known to those skilled in the art and may for example have an upper chassis 3 and a lower chassis 4 partially shown, the upper chassis 3 usually being fixed against the lower external face of the ladle.
  • the upper 3 and lower 4 chassis (in the position of use of the ladle) can each comprise a closure plate (not shown), one being fixed and the other mobile, the two plates being pressurized one against the other to ensure, among other things, that the valve is watertight in the position for stopping the flow of molten metal.
  • a series of springs (not shown) can be arranged in a manner known per se between the lower chassis 4 and the movable plate carried by the latter. The resulting force of the springs can amount to 100,000 N.
  • the upper chassis 3 can also be constituted by the bottom of the ladle (not shown). Therefore, one can assimilate for example the lower chassis 4, carrying the movable plate, to the valve 2 itself or to a door 4 and the upper chassis 3, carrying the fixed plate, to the bottom of the pocket. casting or to the fixed member 3.
  • the operating and blocking device comprises a fixing element 5 having the form of a tie rod 5.
  • the latter is fixed for example to the upper chassis 3 by a shaft 6 passing through one end 105 of the tie rod 5, so that the tie rod can pivot around the shaft 6 to occupy at least one locking position of the lower chassis 4 (shown) and a release position of this lower chassis 4 (not shown).
  • the shaft 6 is fixed to the upper frame 3 in a known manner.
  • the jack 7, of the single-acting type in the present case, has an inlet 11 for hydraulic fluid.
  • a traction rod 12 is arranged in the hollow rod 9 of the piston 8 so as to be subjected to traction during the operation of the lower chassis 4 towards the fixing position.
  • the pull rod 12 has for this purpose at its end 112 remote from the lower frame 4 a nut 13 and a lock nut 14 to bear in a manner known per se on the end of the hollow rod 9 which leaves the end 15 of the cylinder 7, opposite the lower chassis 4.
  • the hollow rod arrangement 9 allows the traction rod 12 to exit through the end 16 of the cylinder 7 located on the side of the upper chassis 3.
  • the end 205 of the tie rod 5 and the other end 212 of the pull rod 12 comprise mutual engagement means 17 between the hollow rod 9 of the jack and the tie rod 5.
  • these engagement means 17 comprise inter alia for the tie-rod 5 a T-shaped groove 18 cut in the end of the tie-rod 205, in a direction perpendicular to the longitudinal axes of the tie-rod 5 and of the shaft 6.
  • This groove in the shape of T 18 opens, on the one hand, preferably on the side towards which the tie rod 5 pivots to occupy the aforementioned release position and, on the other hand, through the end face 19 of the tie rod 5 most away from the shaft 6.
  • the T-shaped groove 18 can receive, at least in the locking position, the above-mentioned rod end 212 which has a T-shaped section corresponding to the T-shaped groove 18 and which is part of the engagement means 17, these therefore forming a detailed link chable in the case illustrated in figures 1 and 2.
  • the jack 7 has gripping means 20 between its cylinder 10 and the lower chassis 4.
  • These gripping means 20 may include, among other things, a jack support 21 fixed in a known manner to the cylinder 10 and having two support legs 22 which, for maneuvering, can take support by a support face 122 on a wear plate 23 secured to the lower frame 4 by means of the screws 24.
  • the support faces 122 (FIG. 1) legs 22 and a corresponding face 123 ( Figure 1) of the wear plate are perpendicular to the longitudinal axis of the tie rod 5 when the latter is in the locking position and the lower frame 4 is in the fixing position.
  • the longitudinal axis of the tie rod 5 in the locking position is advantageously substantially parallel to the determined direction of movement of the lower chassis 4 in the vicinity of the latter's fixing position.
  • blocking means 25 in the form of a wedging element 25 which, in the embodiment described, is arranged between the lower chassis 4 and a wedging surface 26 presented by the tie rod 5 and which is described below.
  • the operating and blocking device 1 also comprises supply means 50 (FIG. 3), of a hydraulic fluid under pressure. These means are known per se but will be explained below.
  • the lower chassis 4 has an opening 27 between two branches 28 and 29, allowing the tie rod 5 to pass from the release position, away from the lower chassis 4, to the locking position of this lower chassis 4.
  • the tie rod 5 advantageously has a body 305, which can be substantially cylindrical and which is arranged to pass through the opening 27 when the tie rod is in the locked position.
  • the tie rod 5 has at its end 205 a head 30 which projects substantially from the lower chassis 4, on the side of the latter located away from the upper chassis 3.
  • This head 30 may comprise, on the one hand, the T-shaped groove 18 opening onto the upper face 19 of the head and, on the other hand, the wedging surface 26 located on the side of the head 30 which is opposite the chassis lower 4.
  • This wedging surface 26 is preferably parallel to a corresponding surface 223 of the wear plate 23 when the lower chassis 4 is in the fixing position.
  • the method according to the invention consists, for example in the case of the device described, for bringing and blocking the lower chassis 4 on the upper chassis 3 in the fixing position, first adjusting the supply means 50 so that the hydraulic fluid is not brought into the cylinder 7 but so that the traction rod 12 can be moved by hand, if necessary with the hollow rod 9. Then, the lower chassis 4 can be placed in the waiting position in which the above pressure springs do not act. After that the tie rod 5 is pivoted from the release position to the blocking position in which the tie rod body 305 passes right through the lower chassis 4 so that the head 30 is located opposite said chassis 4 relative to the shaft 6, so that the wedging surface 26 is parallel to the corresponding surface 223 of the wear pad 23. The T-shaped rod end 212 is engaged in the T-shaped groove 18 from head 30 from tie 5.
  • the support legs 22 of the support 21 are oriented during this engagement so that their support faces 122 are arranged facing the face of the corresponding wafer 123.
  • the supply means are then actuated to develop sufficient pressure in the jack 7 so that the thrust of the latter overcomes the force of the above springs and the other forces resulting inter alia from friction in hinges, etc.
  • the lower frame 4 is thus brought into the fixing position shown and even somewhat beyond this position, in the direction of movement S (FIG. 2), so that the distance between the wedging surface 26 and the corresponding surface 223 is somewhat greater than the corresponding dimension H of the wedging element 25.
  • the wedging element 25 can then be inserted between these two surfaces 26 and 223.
  • the procedure is as follows. If necessary, the cylinder 7 and its support 21 are put in place as already described above in order to effect the engagement of the traction rod 12 with the tie rod 5 and the engagement of the bearing faces 122 with the plate wear 23.
  • the cylinder 7 is supplied with hydraulic fluid, at a pressure sufficient to push the lower chassis 4 in the direction S towards the upper chassis 3, against the above-mentioned springs.
  • the wedging element 25 is removed and the supply means 50 are maneuvered in order to gradually let the hydraulic fluid escape from the jack 7 so that the above-mentioned springs can elastically push the lower chassis 4 in the opposite direction to the determined direction S, until in the aforementioned waiting position, away from the upper chassis 3, beyond which the springs have no effect.
  • the tie rod 5 can be pivoted around the shaft 6 to the release position to allow possible maneuvering the lower chassis 4 to a position even further away from the upper chassis 3.
  • the supply means 50 illustrated by way of example in FIG. 3 comprise inter alia a hydraulic fluid reservoir 51, a hydraulic pump 52 drawing the fluid from the reservoir and transmitting it to a pressure adjustment valve 53 which limits the pressure at a value given by a return of fluid to the reservoir 51 and which transmits the fluid under pressure set to a valve 54 manually actuated by a lever 55.
  • This valve 54 is arranged for example so that, in a position of the lever 55, the fluid hydraulic pressure set is sent to the cylinder 7, that in a second position the hydraulic fluid is no longer supplied to the cylinder 7 but can not escape and that in a third position of the lever 55, the hydraulic fluid can freely s '' escape from the jack 7 towards the tank 51.
  • the supply means 50 may advantageously include a pressure gauge 56 arranged to display the pressure of the fluid contained in the jack 7. These supply means 50 may also include a converter 57 of hydraulic pressure into an electrical signal , which can for example activate an alarm, above a given pressure, by two electric wires 58.
  • the pressure necessary to overcome the force of these can be read on the pressure gauge 56, during a progressive pressurization of the jack 7, and compared with known values which make it possible to determine whether the overall force of the springs is sufficient or too weak to ensure the aforementioned seal.
  • the pressure value read can also make it possible to determine whether the force to be exerted to bring the lower chassis 4 into the fixing position is normal or greater than a limit value, thus highlighting respectively a possible mechanical defect etc. of one of the frames 3, 4, of the valve itself ... It is therefore possible to be warned in this way of anomalies or emerging faults which can be remedied as soon as possible.
  • the wedging element 25 advantageously has, in the case of the example described, a form of fork with two branches 125 and 225 (FIG. 1) so that it can be easily slid on either side of the body 305 of the pulling 5.
  • this wedging element 25 comprises a chain 31 for fixing it for example to the upper chassis 3 and preventing it from being mislaid or being out of reach when it is to be inserted between the two blocking surfaces 26 and corresponding 223.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Actuator (AREA)
  • Pressure Vessels And Lids Thereof (AREA)
EP19910870004 1991-01-09 1991-01-09 Procédé et dispositif de manoeuvre et de blocage d'une porte, en particulier d'une vanne ou d'un obturateur Expired - Lifetime EP0494589B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
ES91870004T ES2062746T3 (es) 1991-01-09 1991-01-09 Procedimiento y dispositivo de maniobra y de bloqueo de una puerta, en particular de una valvula de compuerta o de un obturador.
DE1991604023 DE69104023T2 (de) 1991-01-09 1991-01-09 Verfahren und Vorrichtung zur Betätigung und Verriegelung einer Schieberverschlussplatte.
EP19910870004 EP0494589B1 (fr) 1991-01-09 1991-01-09 Procédé et dispositif de manoeuvre et de blocage d'une porte, en particulier d'une vanne ou d'un obturateur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19910870004 EP0494589B1 (fr) 1991-01-09 1991-01-09 Procédé et dispositif de manoeuvre et de blocage d'une porte, en particulier d'une vanne ou d'un obturateur

Publications (2)

Publication Number Publication Date
EP0494589A1 EP0494589A1 (fr) 1992-07-15
EP0494589B1 true EP0494589B1 (fr) 1994-09-14

Family

ID=8209006

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910870004 Expired - Lifetime EP0494589B1 (fr) 1991-01-09 1991-01-09 Procédé et dispositif de manoeuvre et de blocage d'une porte, en particulier d'une vanne ou d'un obturateur

Country Status (3)

Country Link
EP (1) EP0494589B1 (es)
DE (1) DE69104023T2 (es)
ES (1) ES2062746T3 (es)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU502205B2 (en) * 1975-02-25 1979-07-19 Kurosaki Refractories Co. Ltd. + Nippon Steel Corp. Assembling a sliding gate
BE1000390A4 (fr) * 1987-03-16 1988-11-22 Vesuvius Internat Corp Systeme de verrouillage d'une porte d'un dispositif de fermeture coulissante d'un conteneur metallurgique.

Also Published As

Publication number Publication date
ES2062746T3 (es) 1994-12-16
EP0494589A1 (fr) 1992-07-15
DE69104023T2 (de) 1995-02-16
DE69104023D1 (de) 1994-10-20

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