EP1047504B1 - Buse a jet eventail destinee a pulveriser un liquide de refroidissement sur un produit de coulee continue - Google Patents

Buse a jet eventail destinee a pulveriser un liquide de refroidissement sur un produit de coulee continue Download PDF

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Publication number
EP1047504B1
EP1047504B1 EP98959851A EP98959851A EP1047504B1 EP 1047504 B1 EP1047504 B1 EP 1047504B1 EP 98959851 A EP98959851 A EP 98959851A EP 98959851 A EP98959851 A EP 98959851A EP 1047504 B1 EP1047504 B1 EP 1047504B1
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EP
European Patent Office
Prior art keywords
spray nozzle
spray
nozzle according
outlet slot
mixing chamber
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
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EP98959851A
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German (de)
English (en)
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EP1047504A1 (fr
Inventor
Adrian Stilli
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Concast Standard AG
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Concast Standard AG
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Publication date
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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/62—Quenching devices
    • C21D1/667—Quenching devices for spray quenching
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
    • B05B1/04—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape in flat form, e.g. fan-like, sheet-like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
    • B05B1/04—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape in flat form, e.g. fan-like, sheet-like
    • B05B1/042—Outlets having two planes of symmetry perpendicular to each other, one of them defining the plane of the jet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0203—Cooling
    • B21B45/0209—Cooling devices, e.g. using gaseous coolants
    • B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
    • B21B45/0233—Spray nozzles, Nozzle headers; Spray systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/124—Accessories for subsequent treating or working cast stock in situ for cooling
    • B22D11/1246—Nozzles; Spray heads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/26—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectors; Breaking-up the discharged liquid or other fluent material by impinging jets

Definitions

  • the invention relates to a spray nozzle for spraying a continuous cast product with a coolant according to the preamble of the claim 1.
  • Continuous casting in particular continuous casting of Steel, by cooling a molten metal in a continuous casting mold
  • Continuous casting product is produced in the form of a strand, the surface of which a solidified crust is formed and a liquid core of molten metal has continuously drawn from the mold.
  • the strand is conveyed through a secondary cooling zone, in which it is sprayed with a coolant, generally water, to give it up continue to withdraw heat to complete solidification and turn it on for bring the further processing to the desired temperature.
  • a coolant generally water
  • the secondary cooling directly causes the strand to solidify or influenced, is the secondary cooling process and the ones required to carry it out Devices decisive for the quality of the end products.
  • Significance are the components used for the distribution of the coolant, especially the spray nozzles.
  • the secondary cooling intensity the speed of strand shell growth determined and more depending on the application or less "hard” or “soft” is set, and the spatial distribution the coolant loading density, which should be as homogeneous as possible, by a to ensure the most homogeneous strand shell growth possible.
  • Spray nozzles are commonly used in terms of secondary cooling intensity requirements and optimized the homogeneity of the coolant supply.
  • the kinetic energy is decisive for the secondary cooling intensity the sprayed coolant drops and in particular the coolant loading density.
  • the coolant loading density not only is the homogeneity of the drop distribution in the spray generated with a single spray nozzle.
  • Relevant for homogeneity the coolant loading density is also the angular distribution of the Drop tracks. The angular distribution determines the shape and size the area sprayable with a spray on a strand.
  • a large number of spray nozzles are required to cover the entire Cover the surface of a strand to be cooled with coolant.
  • the Spray jets of the individual nozzles are therefore superimposed accordingly.
  • the angular distribution of the droplets of a single spray is consequently decisive for the homogeneity of the coolant loading density at a Superposition of a large number of spray jets.
  • the known full cone nozzles deliver spray jets with a conical Angular distribution of the drop paths. Because of their cone shape, the Spray jets from several full cone nozzles do not perfectly cover large spray areas; the superimposition of several spray jets results in a coolant exposure density with a large inhomogeneity.
  • This spray nozzle has a nozzle body with a mixing chamber rotationally symmetrical about the longitudinal axis of the nozzle body on, with two inlet openings through which a liquid, a first and forming a second liquid flow, can be flowed in, and with a flow downstream arranged outlet opening equipped for a spray jet is.
  • this nozzle has essentials Features of a known type of full cone nozzle: the two inlet openings are thus in a guide structure for those entering the mixing chamber Liquid flows integrated that the liquid flows when entering the mixing chamber in addition to a speed component in the direction a velocity component tangential to the mixing chamber wall on the outlet opening receive. Because of this tangential speed component the two liquid flows combine after entering the mixing chamber to a liquid flow directed towards the outlet opening, the one Has swirl around the longitudinal axis of the nozzle body.
  • the in US 3 072 346 described spray nozzle has - like a conventional full cone nozzle round outlet opening.
  • the outlet opening is such on the outlet side funnel-shaped that the emerging spray jet in the direction of the diagonal of a square is distorted. Because of this design of the outlet opening the nozzle delivers a spray jet with approximately square droplet distribution - Relative to a plane perpendicular to the longitudinal axis of the nozzle body.
  • a disadvantage of this spray nozzle is that the shape of the drop distribution of the Spray jet due to the imprinted swirl with increasing inlet pressure the liquid becomes more and more distorted. That is why with such a nozzle the requirements for the homogeneity of a secondary cooling section Coolant pressurization density are not met.
  • Another disadvantage of this nozzle is that its spray is a has approximately square droplet distribution only in one spray plane that not very far, typically not more than 20 cm from the outlet may be removed. Because of the small working distance, there are a large number Spray nozzles of this type are required to make large areas sufficiently homogeneous to spray.
  • a flat jet nozzle is described in US Pat. No. 4,988,043. It has a through channel for the liquid to be sprayed with an outlet slot for the Spray on.
  • the spray jet is in the slot direction over a wide angular range fanned out while it is transverse to the longitudinal direction of the slot increasing distance from the outlet slit hardly broadened.
  • the quasi one-dimensional Fanning out leads to a flat spray. Because of the low Expansion of the spray jet across the outlet slot means that the spraying is greater rectangular surfaces associated with complications, be it that one large number of these flat jet nozzles must be used, or that one individual flat jet nozzle has to be moved in order to use its spray jet to cover a larger area.
  • US 3 759 448 describes a burner nozzle that has all the features of the preamble of claim 1.
  • the present invention has for its object to provide a spray nozzle for Is suitable for use in a secondary cooling section of a continuous caster and for this purpose it enables one from as large a distance as possible as large an area as possible as homogeneously as possible with liquid drops to spray great kinetic energy.
  • the spray nozzle according to the invention comprises a mixing chamber into which two inlet openings a liquid, a first and a second liquid flow forming, inflowable and the one arranged downstream Has outlet opening for a spray jet, wherein at least one mixing chamber wall formed as a guide surface for the liquid flows and on the outlet opening is shaped such that the liquid flows on or meet at an angle immediately in front of the outlet opening and thereby form the spray.
  • the fact that the two liquid flows on the Are directed towards the outlet opening and collide at the outlet opening, Relatively large drops of liquid are formed which - based on the inlet pressure at the inlet openings - the outlet opening with relatively large kinetic energy being able to leave. Energy losses due to vortex formation in the Mixing chamber are largely avoided.
  • the high kinetic energy enables a large working distance when spraying a surface.
  • the atomization of the two liquid streams enables a large spread of the Direction of propagation of the drops and therefore a wide spreading of the spray jet emerging from the outlet opening.
  • An essential contribution to fanned out the spray jet deliver in particular drops that when Impact of the liquid flows transversely to the direction of propagation of the Liquid flows are scattered. Because the spread of liquid flows in the mixing chamber essentially determined by the geometry of the mixing chamber the inlet pressure can be varied over a relatively large range, without significantly changing the spread of the spray jet.
  • cross-section of an inlet opening is basically a section transverse to the respective liquid flow in the inlet opening and the cross-section of the outlet opening means a section transverse to the spray jet.
  • Spray jet depend essentially on the angle of incidence at which the liquid flows meet at or immediately before the outlet opening. It is advantageous to set the angle of incidence in a range between 60 ° and 130 °, preferably between 80 ° and 100 °. This creates the prerequisites created liquid droplets that form the outlet opening leave with particularly high kinetic energy and form a spray jet, which is characterized by the fact that the drops over a special large solid angle around a medium direction of propagation is particularly uniform to distribute.
  • the mixing chamber has at the outlet opening a taper with an opening angle the outlet opening between 60 ° and 130 °, preferably between 80 ° and 100 °, on.
  • the taper forms the part of the guide surface for the liquid flows, which determines the angle of incidence.
  • the rejuvenation leads the two Liquid flows together at the outlet opening at an angle of incidence, which corresponds to the opening angle of the taper.
  • the interaction of the two liquid flows at the outlet opening a particularly large speed component in the direction of the bisector the opening angle of the taper. This direction corresponds the mean direction of propagation of the drops that leave the outlet opening can.
  • the outlet opening - depending on its shape - gives the way free for drops whose paths are at a solid angle around the central direction of propagation are scattered.
  • the taper can be conical, for example his.
  • An exit slot offers - with a suitable shape its cross-sectional area transverse to the direction of propagation of the spray jet - the Possibility, for example, to spray a rectangular area.
  • the lengths Sides of the rectangular spray surface are essentially parallel to the Direction of the longitudinal extent of the slot.
  • a number of further developments of the spray nozzle according to the invention have other features that alone and / or in combination with each other are the prerequisite for a homogeneous drop distribution on a spray surface.
  • the Outlet opening and the mixing chamber have a common plane of symmetry. Under this condition, the two liquid flows are symmetrical with respect to the plane of symmetry. This can cause drops to form Paths run symmetrically to the plane of symmetry.
  • the inlet openings each have a cross-sectional area have an elongated shape and the directions of their longitudinal extension in each case essentially parallel to the direction of the longitudinal extension of the outlet slot are arranged.
  • the two liquid flows are on the inlet openings in the sense of "preformed” and adapted to the outlet slot, that the lines of equal flow velocity - related to a Level across the respective liquid flow - already at the inlet openings the same or approximately the same shape as the cross-sectional area of the Outlet opening (transverse to the central direction of propagation of the liquid drops) to have.
  • Another embodiment of the spray nozzle according to the invention has one Exit slot and is designed so that the mixing chamber and the exit slot have a common plane of symmetry, the longitudinal direction of the outlet slot lies in the plane of symmetry and the inlet openings different sides of the plane of symmetry are arranged.
  • the case is the spray in the plane of symmetry, i.e. in the longitudinal direction of the Outlet slot, particularly wide.
  • the drop distribution particularly homogeneous if - as in the previously discussed embodiment -
  • the inlet openings have a cross-sectional area with an elongated shape have and the directions of their longitudinal extension substantially parallel to the plane of symmetry.
  • a particularly even drop distribution is achieved when the ratio of the sum of the two cross-sectional areas of the Inlet openings to the cross-sectional area of the outlet opening between 1.5 and 2, preferably between 1.6 and 1.8.
  • the mixing chamber has a taper arranged at the outlet opening of the previously mentioned type and a cylindrical segment between the taper and has the inlet openings.
  • the cylindrical segment acts as one Sidewall limiting liquid flow.
  • the length of the cylindrical element has an influence on how the two liquid flows at the Mix the outlet opening and the efficiency with which the liquid flows be converted into drops that leave the outlet opening unhindered.
  • the The length of the cylindrical segment can be optimized accordingly.
  • a spray nozzle with a structurally particularly simple mixing chamber results if the entry openings between one crosspiece, the opposite Parts of the lateral boundary of the liquid flows connects, and the lateral boundary are formed.
  • Side wall and a cuboid cross bar have the entry openings
  • Cross sections in the form of circular sections According to the invention such entry openings can be combined with an exit slot, its longitudinal direction substantially parallel to the chords of the circular sections lies.
  • the drop distribution in the spray jet can be influenced by defined Extensions of the cross section of the outlet opening in the direction of propagation of the spray jet.
  • An embodiment of the spray nozzle according to the invention has an outlet slot, the cross-sectional area of which on the narrow side Ends in the direction of propagation of the spray jet is expanded. This will make one particularly large spreading of the spray jet in the longitudinal direction of the outlet slot achieved.
  • the cross section of the outlet slot is in the middle of the long sides of the outlet slot in the direction of propagation of the spray jet expanded.
  • outlet opening and the mixing chamber are common Have plane of symmetry and to limit the out of the outlet opening emerging spray jet guide walls are arranged.
  • Spray nozzles asymmetrical in that the inlet openings are different Have cross-sectional areas and / or the guide walls on opposite Sides of the outlet opening at different distances from the outlet opening are arranged. These two constructive measures induce an asymmetry of the spray nozzle on the inlet side and / or outlet side, the itself - even with an otherwise symmetrical mixing chamber - on the drop distribution in the spray jet. With a suitable quantitative expression This asymmetry makes it possible compared to a symmetrical nozzle to shift the center of gravity of the drop distribution by a predetermined distance, to influence the homogeneity of the drop distribution and the shape to vary the spray area.
  • a spray nozzle according to the invention which has a suitable outlet slot is provided, it is possible, for example, from a distance of approximately 45 cm spray uniformly on rectangular surfaces with a width of 10 cm and a length of 50 cm.
  • Spray nozzles can be used in a secondary cooling section of a continuous caster This type is advantageous for cooling strands with billet or bloom format are used, one of the spray nozzles 4 - 6 conventional full cone nozzles replace and additionally a more even coolant supply would enable.
  • the nozzle according to the invention can be implemented with an exit slot with a length of more than 10 mm and a width of more than 5 mm.
  • the asymmetrical embodiments of the spray nozzle according to the invention find various applications in a continuous caster.
  • a continuous sheet caster in the area of the secondary cooling zone Sections of a curved strand with a rectangular cross-section on the different Sides by superimposing spray surfaces in the form of Rectangles and sections of circular rings can be cooled.
  • Such spray surfaces can with the spray nozzle according to the invention by suitable dimensioning of its components are generated.
  • the two spray nozzles shown in FIGS. 1A-B and 2A-C are determined for spraying a rectangular surface with drops of liquid.
  • the spray nozzle 5 shown in FIGS. 1 A - B and 2 A - B is symmetrical to one Level 35.
  • the spray nozzle 5 comprises a nozzle body 4, which consists of one cylindrical portion 16 and a conical portion 17 composed Has cavity.
  • the cylindrical part has an opening 6, through which a liquid to be sprayed is admitted under a certain pressure p can and is rotationally symmetrical with respect to a longitudinal axis 38.
  • the conical section 17 tapers in the direction of the longitudinal axis 38 according to an opening angle ⁇ and has an outlet slot 30 for one Spray 40 on the cone tip.
  • the exit slot 30 is symmetrical with respect to the plane of symmetry 35, the longitudinal direction of the cross-sectional area of the exit slot 30 lies in the plane of symmetry 35.
  • a transverse web 8 separates in the cylindrical one Section 16 one of a part of the cylindrical section 16 and the conical section 17 existing mixing chamber 15 and leaves at the Wall of the cylindrical section 16 two inlet openings 9 and 10 free.
  • the Cross-sectional areas of the inlet openings 9 and 10 have the shape of a segment of a circle and are symmetrical on different sides of the plane of symmetry 35 arranged.
  • the cross-sectional areas of the inlet openings 9 and 10 have an elongated shape, with the directions of their longitudinal extension or the chords of the circular segments lie parallel to the plane of symmetry 35.
  • the spray nozzle 5 becomes a liquid to be sprayed along streamlines 7 fed under a pressure p through the opening 6 and through the inlet openings 9 and 10, a first liquid stream 12 and a second Forming liquid flow 13, passed into the mixing chamber 15.
  • the opening angle ⁇ of the conical section 17 the diameter D and the length L of the part of the cylindrical portion 16 which the Mixing chamber 15 limited (Fig. 1 B)
  • the two liquid flows 12th and 13 along the walls of the cylindrical section 16 and the conical section, respectively Section 17 guided to meet at the outlet opening 30 while forming the spray jet 40.
  • ⁇ L denotes the angle which denotes the fanning out of the spray jet in the plane of symmetry, ie characterizes the angular range over which drops which leave the outlet opening 30 are scattered in the plane of symmetry 35.
  • ⁇ in FIG. 1A designates the angular range over which drops are distributed perpendicular to the plane of symmetry 35.
  • the angle ⁇ L in the spray nozzle 5 according to the invention is considerably larger than ⁇ .
  • an enlargement 31 of the cross-sectional area of the outlet slot 31 in the direction of propagation 39 of the spray jet 40 is provided at the narrow ends of the outlet slot 30.
  • FIG. 2 C indicates an alternative embodiment of the outlet slot 30.
  • the cross section of the outlet slot 30 in FIG. 2C points in the middle of the long one Pages in the direction of propagation 39 of the spray jet 40 extensions 32.
  • the extensions lead to an accumulation of drops within the Plane of symmetry 35 in the direction of the longitudinal axis 38.
  • Guide walls 45, 46 are essentially parallel to the plane of symmetry 35 arranged.
  • the guide walls act - depending on the distance from the plane of symmetry 35 - as a limitation of the spray jet emerging from the outlet opening 30 40 and / or to protect the spray jet 40 from external disturbances, for example movements of the ambient air.
  • the spray nozzle according to the invention is also functional for 60 ° ⁇ ⁇ 130 °, with 80 ° ⁇ ⁇ 100 ° a preferred range is.
  • a - C represent an asymmetrical spray nozzle 50 which can be regarded as a modification of the spray nozzle 5 described above which is distinguished by the plane of symmetry 35.
  • the asymmetrical spray nozzle 50 differs from the symmetrical spray nozzle 5 in that the transverse web 8 is offset with respect to the plane of symmetry 35, the inlet openings 9 and 10 consequently form circular segments with different surfaces A 1 and A 2 and the guide surfaces 45 and 46 different Have distances t 1 and t 2 with respect to the center of the outlet opening 30.
  • asymmetric spray nozzle 50 A is 1 ⁇ A 2 and t 1> t 2 are chosen, 9 and 10, ie that of the inlet openings with the smaller cross-sectional area is arranged on the same side of the symmetry plane 35 as that of the guide walls 45 and 46, the has a greater distance from the plane of symmetry 35. Due to the different shape or dimensioning of the inlet openings 9 and 10, the liquid streams 12 and 13 transport different amounts of liquid (indicated in FIG. 3 C by arrows with a stroke width corresponding to the amount of liquid).
  • the spray jet 40 is dependent on the distance x from the plane of symmetry 35 by a drop distribution P (x) characterized, the maximum of which is at a distance x M from the plane of symmetry 35 on the side opposite the inlet opening 10.
  • the distance x M can be varied by appropriately specifying the widths w 1 or w 2 of the inlet openings 9 or 10.
  • a rectangular spray surface with a homogeneous drop distribution P (x) is created in a plane perpendicular to the plane of symmetry 35. If the distances t 1 and t 2 are not optimally matched to w 1 and w 2 , a spray surface deviating from the rectangular shape can arise, for example in the form of a section of a circular ring.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Organic Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Physics & Mathematics (AREA)
  • Continuous Casting (AREA)
  • Nozzles (AREA)
  • Heat Treatment Of Articles (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Coating With Molten Metal (AREA)

Claims (17)

  1. Buse de pulvérisation destinée à la pulvérisation d'un liquide de refroidissement sur un produit d'extrusion, comprenant une chambre de mélange (15) dans laquelle un liquide (7) peut s'écouler via deux ouvertures d'entrée (9, 10) en formant un premier et un deuxième écoulement de liquide (12, 13), et comprenant une fente de sortie (30), agencée en aval dans le sens de l'écoulement, pour un jet de pulvérisation (40), dans laquelle au moins une paroi (16, 17) de la chambre de mélange est réalisée à titre de surface de guidage pour les d'écoulement de liquide (12, 13), caractérisée en ce que ladite au moins une paroi de la chambre de mélange est formée au niveau de la fente de sortie (30) de telle manière que les écoulements de liquide (12, 13) se rencontrent en haut niveau de la fente de sortie (30) sous un angle (α), compris entre 60° et 130°, de préférence entre 80° et 100°, et forme ainsi le jet de pulvérisation (40).
  2. Buse de pulvérisation selon la revendication 1, caractérisée en ce que la chambre de mélange (15) comporte au niveau de la fente de sortie (30) un rétrécissement (17) avec un angle d'ouverture (α) au niveau de la fente de sortie (30) compris entre 60° et 130°, de préférence entre 80° et 100°, et en ce que le rétrécissement forme une partie de la surface de guidage.
  3. Buse de pulvérisation selon la revendication 2, caractérisée en ce que la chambre de mélange (15) comporte un segment cylindrique (16) entre le rétrécissement (17) et les ouvertures d'entrée (9, 10).
  4. Buse de pulvérisation selon l'une des revendications 1 à 3, caractérisée en ce que les ouvertures d'entrée (9, 10) présentent chacune une surface de section transversale avec une forme allongée, et en ce que les directions de leurs extensions longitudinales (35) sont disposées respectivement sensiblement parallèlement à la direction de l'extension longitudinale (35) de la fente de sortie (30).
  5. Buse de pulvérisation selon l'une des revendications 1 à 4, caractérisée en ce que la fente de sortie (30) et la chambre de mélange (15) présentent un plan de symétrie commun (35).
  6. Buse de pulvérisation selon l'une des revendications 1 à 5, caractérisée en ce que la chambre de mélange (15) présente une paroi latérale (16) qui délimite latéralement les écoulements de liquide (12, 13), et en ce que les ouvertures d'entrée (9, 10) débouchent respectivement dans la chambre de mélange (15) au niveau de la paroi latérale (16).
  7. Buse de pulvérisation selon la revendication 6, caractérisée en ce que les ouvertures d'entrée (9, 10) sont formées entre la paroi latérale (16) et une barrette transversale (8).
  8. Buse de pulvérisation selon l'une des revendications 1 à 7, caractérisée en ce que la direction longitudinale (35) de la fente de sortie (30) est située dans un plan de symétrie, et en ce que les ouvertures d'entrée (9, 10) sont agencées sur des côtés respectivement différents du plan de symétrie (35).
  9. Buse de pulvérisation selon l'une des revendications 1 à 8, caractérisée en ce que la section des ouvertures d'entrée (9, 10) a la forme d'un segment de cercle.
  10. Buse de pulvérisation selon l'une des revendications 1 à 1, caractérisée en ce que la surface de section de la fente de sortie (30) présente un élargissement (31) au niveau des extrémités des petits côtés, dans la direction de l'évasement (39) du jet de pulvérisation.
  11. Buse de pulvérisation selon l'une des revendications 1 à 10, caractérisée en ce que la section de la fente de sortie (30) présente un élargissement (32) au milieu des grands côtés de la fente de sortie, dans la direction de l'évasement (39) du jet de pulvérisation (40).
  12. Buse de pulvérisation selon l'une des revendications 1 à 11, caractérisée en ce que, pour limiter le jet de pulvérisation (40) sortant de la fente de sortie (30), des parois de guidage (45, 46) sont agencées en direction de l'extension longitudinale (35) de la fente de sortie (30).
  13. Buse de pulvérisation selon l'une des revendications 1 à 12, caractérisée en ce que le rapport entre la somme des deux surfaces de section des ouvertures d'entrée (9, 10), et la surface de la section transversale de la fente de sortie (30) est choisi entre 1,5 et 2, de préférence entre 1,6 et 1,8.
  14. Buse de pulvérisation selon la revendication 3, caractérisée en ce que le rapport entre le diamètre (D) du segment cylindrique (16) et la longueur (L) du segment cylindrique (16) est choisi entre 2 et 3.
  15. Buse de pulvérisation selon l'une des revendications 1 à 14, caractérisée en ce que les ouvertures d'entrée (9, 10) présentent des surfaces de sections différentes (A1, A2).
  16. Buse de pulvérisation selon l'une ou l'autre des revendications 12 et 15, caractérisée en ce que les parois des guidages (45, 46) sur les côtés opposés de la fente de sortie (30) sont agencées à des distances différentes de la fente de sortie (30).
  17. Buse de pulvérisation selon les revendications 5, 15 et 16, caractérisée en ce que l'ouverture d'entrée (9) avec la petite surface transversale (A1) est agencée sur le même côté du plan de symétrie que celle (45) des parois de guidage (45, 46) qui présente la plus grande distance (t1) vis-à-vis du plan de symétrie (35).
EP98959851A 1997-11-14 1998-11-05 Buse a jet eventail destinee a pulveriser un liquide de refroidissement sur un produit de coulee continue Expired - Lifetime EP1047504B1 (fr)

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Application Number Priority Date Filing Date Title
CH263997 1997-11-14
CH263997 1997-11-14
PCT/EP1998/007069 WO1999025481A1 (fr) 1997-11-14 1998-11-05 Buse a jet eventail destine a pulveriser un liquide de refroidissement sur un produit de coulee continue

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EP1047504A1 EP1047504A1 (fr) 2000-11-02
EP1047504B1 true EP1047504B1 (fr) 2001-10-24

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US (1) US6360973B1 (fr)
EP (1) EP1047504B1 (fr)
JP (1) JP2001523554A (fr)
CN (1) CN1107551C (fr)
AT (1) ATE207389T1 (fr)
AU (1) AU733220B2 (fr)
BR (1) BR9814137A (fr)
CA (1) CA2308507C (fr)
CZ (1) CZ295473B6 (fr)
DE (1) DE59801901D1 (fr)
DK (1) DK1047504T3 (fr)
ES (1) ES2165708T3 (fr)
PL (1) PL194516B1 (fr)
PT (1) PT1047504E (fr)
RU (1) RU2213627C2 (fr)
TR (1) TR200001364T2 (fr)
TW (1) TW477722B (fr)
UA (1) UA49098C2 (fr)
WO (1) WO1999025481A1 (fr)
ZA (1) ZA9810418B (fr)

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CN107803474A (zh) * 2017-10-27 2018-03-16 兰州理工大学 用于定向凝固设备的高温度梯度定向凝固冷却器

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JP4752252B2 (ja) * 2004-11-30 2011-08-17 Ｊｆｅスチール株式会社 Ｈ形鋼の冷却方法
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JP4765344B2 (ja) * 2005-03-11 2011-09-07 Ｊｆｅスチール株式会社 熱間圧延材のデスケーリング方法およびその装置
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JP2006329516A (ja) * 2005-05-26 2006-12-07 Tlv Co Ltd 気化冷却装置
WO2008008216A2 (fr) * 2006-07-07 2008-01-17 Fsi International, Inc. Procédé d'élimination de particules d'aérosol liquide
JP5010214B2 (ja) * 2006-09-06 2012-08-29 旭サナック株式会社 塗料混合装置
CZ2007210A3 (cs) * 2007-03-20 2008-02-27 Vysoké ucení technické v Brne Dvoumédiová effervescent tryska
DE102007024245B3 (de) * 2007-05-15 2008-08-28 Lechler Gmbh Sprühdüse
US8820665B2 (en) * 2007-09-25 2014-09-02 S.C. Johnson & Son, Inc. Fluid dispensing nozzle
US8528654B2 (en) * 2009-09-09 2013-09-10 International Maritime Security Network, Llc Anti-piracy system and method
JP5591516B2 (ja) * 2009-10-21 2014-09-17 和旺昌噴霧股▲ふん▼有限公司 噴霧器用乱流発生部材
CN101913100A (zh) * 2010-08-16 2010-12-15 黑龙江建龙钢铁有限公司 数控铣床冷却液循环处理方法及其装置
JP5730024B2 (ja) * 2011-01-12 2015-06-03 三菱日立パワーシステムズ株式会社 噴霧ノズル及び噴霧ノズルを有する燃焼装置
ITUD20110101A1 (it) * 2011-06-30 2012-12-31 Danieli Off Mecc Dispositivo e procedimento di rimozione della scaglia da un prodotto metallico
CN102511923A (zh) * 2011-12-14 2012-06-27 上海烟草集团有限责任公司 直射扇面扩展形喷嘴
US9682334B2 (en) 2013-03-13 2017-06-20 Ecolab Usa Inc. Solid water separation to sample spray water from a continuous caster
RU2607882C1 (ru) * 2013-04-17 2017-01-20 Общество С Ограниченной Ответственностью Научно-Производственное Предприятие "Томская Электронная Компания" Устройство для термической обработки рельсов
JP2015036144A (ja) * 2013-08-12 2015-02-23 サムソン エレクトロ−メカニックス カンパニーリミテッド． ノズルチップ
RU2585628C1 (ru) * 2015-02-06 2016-05-27 Олег Савельевич Кочетов Вихревая форсунка кочетова
RU2581379C1 (ru) * 2015-03-02 2016-04-20 Олег Савельевич Кочетов Мобильная установка кочетова пожаротушения с двухфазным распылителем
DE102015207741A1 (de) * 2015-04-28 2016-11-03 Lechler Gmbh Sprühdüse
RU2748255C2 (ru) 2016-10-18 2021-05-21 ЭКОЛАБ ЮЭсЭй ИНК. Устройство для отделения воды и твердых частиц распыляемой воды в машине непрерывного литья и способ непрерывного контроля и управления коррозионным фоном
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CN107803474A (zh) * 2017-10-27 2018-03-16 兰州理工大学 用于定向凝固设备的高温度梯度定向凝固冷却器

Also Published As

Publication number Publication date
CA2308507A1 (fr) 1999-05-27
ATE207389T1 (de) 2001-11-15
JP2001523554A (ja) 2001-11-27
TR200001364T2 (tr) 2000-11-21
ZA9810418B (en) 1999-05-14
DE59801901D1 (de) 2001-11-29
BR9814137A (pt) 2000-10-03
CN1107551C (zh) 2003-05-07
AU733220B2 (en) 2001-05-10
PT1047504E (pt) 2002-04-29
ES2165708T3 (es) 2002-03-16
PL340464A1 (en) 2001-02-12
PL194516B1 (pl) 2007-06-29
EP1047504A1 (fr) 2000-11-02
DK1047504T3 (da) 2002-02-18
CN1278748A (zh) 2001-01-03
US6360973B1 (en) 2002-03-26
CZ295473B6 (cs) 2005-08-17
WO1999025481A1 (fr) 1999-05-27
RU2213627C2 (ru) 2003-10-10
UA49098C2 (uk) 2002-09-16
AU1560599A (en) 1999-06-07
TW477722B (en) 2002-03-01
CA2308507C (fr) 2012-01-10
CZ20001760A3 (cs) 2001-03-14

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