EP2698210B1 - Installation de pulvérisation, en particulier pour la pulvérisation d'un flux de coulée - Google Patents

Installation de pulvérisation, en particulier pour la pulvérisation d'un flux de coulée Download PDF

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Publication number
EP2698210B1
EP2698210B1 EP12005888.8A EP12005888A EP2698210B1 EP 2698210 B1 EP2698210 B1 EP 2698210B1 EP 12005888 A EP12005888 A EP 12005888A EP 2698210 B1 EP2698210 B1 EP 2698210B1
Authority
EP
European Patent Office
Prior art keywords
air
mixing chamber
spray nozzle
air inlet
nozzle device
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.)
Active
Application number
EP12005888.8A
Other languages
German (de)
English (en)
Other versions
EP2698210A1 (fr
Inventor
Louis Kuster
Klaus Von Eynatten
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.)
SMS Concast AG
Original Assignee
SMS Concast AG
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
Priority to EP12005888.8A priority Critical patent/EP2698210B1/fr
Application filed by SMS Concast AG filed Critical SMS Concast AG
Priority to CN201380042934.5A priority patent/CN104520012B/zh
Priority to BR112015003028A priority patent/BR112015003028A2/pt
Priority to PCT/EP2013/066923 priority patent/WO2014026992A2/fr
Priority to US14/620,275 priority patent/US10286446B2/en
Priority to KR20157003906A priority patent/KR20150042208A/ko
Priority to RU2015107120A priority patent/RU2015107120A/ru
Publication of EP2698210A1 publication Critical patent/EP2698210A1/fr
Application granted granted Critical
Publication of EP2698210B1 publication Critical patent/EP2698210B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
    • B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
    • B05B7/0483—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid with gas and liquid jets intersecting in the mixing chamber
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D30/00—Cooling castings, not restricted to casting processes covered by a single main group
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/60—Arrangements for mounting, supporting or holding spraying apparatus
    • B05B15/65—Mounting arrangements for fluid connection of the spraying apparatus or its outlets to flow conduits

Definitions

  • the invention relates to a spray nozzle device, in particular for spraying a casting strand, with a mixing body having a diffuser-like mixing chamber, which is provided with an air inlet, a water inlet and a nozzle outlet arranged on the side opposite the air inlet, through which an air / water mixture emerges.
  • Spray nozzles of this type are known to be used for cooling a casting strand during casting.
  • the aim is to achieve a cooling effect that is as uniform as possible in order to prevent cracks from occurring in the hot casting strand during the cooling process.
  • the efforts to design the spray nozzle so that the cooling jet emitted is structurally homogeneous.
  • the cooling effect required in each case differs from case to case, both for procedural reasons and because of the dimensions and / or the geometry of the format to be cast. That’s why Operating conditions of the spray nozzle with regard to the air and / or water pressure or the air and / or water flow are variable.
  • a spray nozzle arrangement of this type is in the EP-0 161 307 revealed. It consists of a pre-fogging head and a nozzle mouthpiece with its own mixing chamber, which is provided with a discharge opening for narrow fan-shaped spray patterns.
  • the purpose of the arrangement is to generate a spray jet with such a spray pattern, which has a high degree of atomization and contains liquid droplets of uniform size over the entire length and width.
  • a spray nozzle according to the publication JP-A-2005 131 486 has a central passage into which a fluid with liquid and gas is supplied. Another liquid is added through a ring passage surrounding this passage. In a mixing passage, the two liquids are mixed on the inlet side of the passages and conveyed to an outlet for injecting a mixture of gas and liquid.
  • a distributor head for ejecting the fluid from the passage against an inner wall of the mixing passage is also provided. It is also mentioned that although water is conducted into the inner passage and air into the ring passage, a liquid can also be supplied from the outside. With this spray nozzle, however, the desired spray patterns cannot be achieved because these passage openings differ only slightly from the longitudinal axis of the spray nozzle.
  • the invention has for its object to provide a spray nozzle of the type mentioned, which ensures a high degree of atomization and a high uniformity of the spray regardless of the casting process or format of the product to be cooled. This should also be guaranteed regardless of the media pressures set.
  • the air inlet is formed by an air inlet nozzle with an area protruding into the mixing chamber and is provided there with at least one air outlet bore which is at an angle of 90 ° +/- max.
  • the water inlet takes place through at least one bore directed near the tip of the air inlet transversely to the longitudinal axis of the mixing chamber.
  • this arrangement has the advantage that the air flow or the air pressure and the water flow or the water pressure do not influence each other to any appreciable extent, so that in the case of process-related or format-related changes in these variables, the quantity emitted by the spray nozzle
  • the cooling jet remains stable with regard to the degree of atomization and the uniformity of the cooling jet.
  • the invention further provides that the air inlet of the mixing body is formed by an aperture protruding into the mixing chamber, which is provided in one plane transverse to its longitudinal axis with at least one circumferentially distributed radial outlet bore. This simplifies the manufacture, assembly and maintenance of the spray nozzle.
  • the region of the air inlet nozzle protruding into the mixing chamber has an outside diameter of less than half the inside diameter of the mixing chamber.
  • the radial outlet bores have an angle of 90 ° +/- max. Transverse to the longitudinal axis of the mixing chamber. 15 °.
  • the air inlet nozzle can also be provided with an air outlet bore directed in the axial direction of the mixing chamber.
  • the invention also provides that the mixing body has an exchangeable nozzle head with an outlet opening for the air / water mixture, the geometry of which can be determined according to the spray pattern required in each case. In this way, the nozzle can be easily adapted to variable operating conditions.
  • the spray nozzle device according to 1 to 4 is used to spray a casting strand with an air / water mixture in order to cool it down during casting.
  • the mixing body 1 has a mixing chamber 2 which is provided with an air inlet 3, a water inlet 4 and a nozzle outlet 5.
  • the mixing chamber 2 of the mixing body 1 is cylindrical. Their length is approximately twice the inside diameter of the mixing chamber.
  • the air inlet 3 is arranged in an air inlet nozzle 6, the tip 7 of which projects into the upper region of the mixing chamber.
  • the air inlet nozzle 6 is aligned coaxially with the mixing chamber 2, and its outer diameter there is smaller than half the inner diameter of the mixing chamber. In this area it is provided with air outlet bores 9 radially extending from it approximately transversely to the longitudinal axis of the mixing chamber, which are evenly distributed circumferentially in a plane transverse to the longitudinal axis.
  • the water inlet 4 opens into the mixing chamber 2 near the tip 7 of the air inlet 3 with a water outlet bore 11 directed transversely to its longitudinal axis, the distance to the tip 7 of which is dimensioned such that the water jet flowing from it does not affect the air outlet bores 9.
  • the spray nozzle described is equipped with only one water outlet hole. In principle, however, it can also be provided with a plurality of circumferentially distributed water outlet bores.
  • the water inlet 4 is formed by a bore 11 ′ running approximately parallel to the longitudinal axis of the mixing body 1 and by this transverse water outlet bore 11.
  • An exchangeable filter 19 and subsequently an orifice 4 ′ are initially contained in the bore 11 ′ and, moreover, it is provided with an overbore 11 ′′, which is designed as an extension starting from the transverse water outlet bore 11 and for calming the one guided into the water outlet bore 11 Water serves.
  • the radial air outlet bores 9 are made at a slight angle to the vertical plane, the angle of inclination being in a range of +/- max. Can vary 15 °.
  • they could also be oriented at least approximately tangentially instead of radially, which creates a swirl of the water jet flowing into the mixing chamber, which brings about a uniformly finely structured atomization of the air / water mixture.
  • the cylindrical mixing body 1 has in the extension of the mixing chamber 2 a likewise cylindrical extension 14, on the latter At the end of an exchangeable nozzle head 15 with an air / water mixture outlet opening 16 is attached.
  • the connection of the nozzle head 15 on the mixing body 1 is arranged in the neck 14 of the mixing body.
  • a bayonet lock or a similarly detachable connection could also be used. Due to the interchangeability of the nozzle head 15, the spray pattern of the nozzle can be easily adapted to the particular application conditions from case to case depending on the shape of the one or more outlet openings.
  • centering means 17 for positioning the nozzle head 15 relative to the mixing body 1 are also indicated on the lower end face of the cylindrical projection 14.
  • an orifice 4 ' is provided for throttling the supplied air or water.
  • Both the air outlet bores and the water outlet bores can be oriented at least approximately tangentially instead of radially.
  • An extension tube could also be provided between the mixing body 1 and the nozzle outlet 5 if, for example, smaller formats of strands are cast.
  • the curve shape 1B-2B of the water flow remains constant when the air pressure is increased from 2 to 3 bar or when the air flow is raised from 6.0 to 7.8 m 3 / h.
  • the spray nozzle according to the invention thus ensures a uniform, homogeneous nature of the air / water mixture, regardless of the cooling effect required in each case. There is thus mutual independence over a large pressure range of air or water pressure.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nozzles (AREA)
  • Continuous Casting (AREA)

Claims (10)

  1. Dispositif à buse de pulvérisation, notamment pour la pulvérisation sur une barre de coulée, comprenant un corps de mélange, qui a une chambre (2) de mélange agissant à la manière d'un diffuseur et qui est pourvue d'une entrée (3) d'air, d'une entrée (4) d'eau et d'une sortie (5) de buse, qui est disposée du côté opposé à l'entrée (3) d'air et par laquelle un mélange d'air/eau peut sortir, caractérisé en ce que
    l'entrée (3) d'air est formée d'une buse (6) d'entrée d'air ayant une partie pénétrant dans la chambre (2) de mélange et y est pourvue d'au moins un trou (9) de sortie d'air, qui fait un angle de 90° +/- 15° au maximum avec l'axe longitudinal de la chambre de mélange, tandis que l'entrée (4) d'eau s'effectue par au moins un trou (11), dirigé transversalement à l'axe longitudinal de la chambre de mélange près de la pointe (7) de l'entrée (3) d'air.
  2. Dispositif à buse de pulvérisation suivant la revendication 1, caractérisé en ce que
    l'entrée (3) d'air est formée d'une buse (6) d'entrée d'air, qui pénètre dans la chambre (2) de mélange et qui est pourvue, dans un plan transversalement à l'axe longitudinal, d'au moins un trou (9) de sortie d'air réparti sur le pourtour.
  3. Dispositif à buse de pulvérisation suivant la revendication 2, caractérisé en ce que
    la partie, pénétrant dans la chambre (2) de mélange, de la buse (6) d'entrée d'air a un diamètre extérieur représentant moins de la moitié du diamètre intérieur de la chambre (2) de mélange.
  4. Dispositif à buse de pulvérisation suivant la revendication 2 ou 3, caractérisé en ce que
    la chambre (2) de mélange est cylindrique et a une longueur deux fois plus grande que son diamètre intérieur.
  5. Dispositif à buse de pulvérisation suivant l'une des revendications 2 à 4, caractérisé en ce que
    les trous (9) de sortie d'air font un angle de 90° +/- 15° au maximum transversalement à l'axe longitudinal de la chambre (2) de mélange, le au moins un trou (11) de sortie d'eau étant placé de manière à ce que le jet d'eau, qui en sort, passe devant les trous (9) de sortie d'air.
  6. Dispositif à buse de pulvérisation suivant l'une des revendications 2 à 5, caractérisé en ce que
    les trous (9) de sortie d'air sont coudés en forme d'éventail dans le plan transversalement à l'axe longitudinal de la chambre (2) de mélange.
  7. Dispositif à buse de pulvérisation suivant l'une des revendications 2 à 6, caractérisé en ce que
    la buse (6) de sortie d'air est pourvue, en outre, d'un trou de sortie d'air dirigé dans la direction de l'axe de la chambre (2) de mélange.
  8. Dispositif à buse de pulvérisation suivant l'une des revendications 1 à 7, caractérisé en ce que
    la sortie (5) de la buse a une tête (15) de buse remplaçable, ayant une ouverture (16) de sortie du mélange d'air/eau, dont la géométrie peut être fixée suivant la configuration de pulvérisation nécessaire, respectivement.
  9. Dispositif à buse de pulvérisation suivant l'une des revendications 1 à 8, caractérisé en ce qu'
    un tuyau de rallonge est prévu entre le corps (1) de mélange et la sortie (5) de la buse.
  10. Dispositif à buse de pulvérisation suivant l'une des revendications 1 à 9, caractérisé en ce qu'
    un diaphragme (4') d'étranglement de l'eau ou de l'air apportés est prévu à l'entrée (4) d'eau et à l'entrée (3) d'air, respectivement.
EP12005888.8A 2012-08-15 2012-08-15 Installation de pulvérisation, en particulier pour la pulvérisation d'un flux de coulée Active EP2698210B1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP12005888.8A EP2698210B1 (fr) 2012-08-15 2012-08-15 Installation de pulvérisation, en particulier pour la pulvérisation d'un flux de coulée
BR112015003028A BR112015003028A2 (pt) 2012-08-15 2013-08-13 dispositivo de bocal spray, em particular para a aspersão de barras longas
PCT/EP2013/066923 WO2014026992A2 (fr) 2012-08-15 2013-08-13 Dispositif à buse de pulvérisation, destiné en particulier à asperger une barre de coulée
US14/620,275 US10286446B2 (en) 2012-08-15 2013-08-13 Spray nozzle device, in particular for spraying a cast strand
CN201380042934.5A CN104520012B (zh) 2012-08-15 2013-08-13 尤其用于对铸坯进行喷洒的喷射喷嘴装置
KR20157003906A KR20150042208A (ko) 2012-08-15 2013-08-13 분사 노즐 장치, 특히 캐스트 스트랜드 분사용 분사 노즐 장치
RU2015107120A RU2015107120A (ru) 2012-08-15 2013-08-13 Конструкция распылительного сопла, в частности, для обрызгивания литой непрерывной заготовки

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12005888.8A EP2698210B1 (fr) 2012-08-15 2012-08-15 Installation de pulvérisation, en particulier pour la pulvérisation d'un flux de coulée

Publications (2)

Publication Number Publication Date
EP2698210A1 EP2698210A1 (fr) 2014-02-19
EP2698210B1 true EP2698210B1 (fr) 2020-01-01

Family

ID=46888867

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12005888.8A Active EP2698210B1 (fr) 2012-08-15 2012-08-15 Installation de pulvérisation, en particulier pour la pulvérisation d'un flux de coulée

Country Status (7)

Country Link
US (1) US10286446B2 (fr)
EP (1) EP2698210B1 (fr)
KR (1) KR20150042208A (fr)
CN (1) CN104520012B (fr)
BR (1) BR112015003028A2 (fr)
RU (1) RU2015107120A (fr)
WO (1) WO2014026992A2 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2698210B1 (fr) 2012-08-15 2020-01-01 SMS Concast AG Installation de pulvérisation, en particulier pour la pulvérisation d'un flux de coulée
CN105413937A (zh) * 2014-09-16 2016-03-23 上海百芬环境科技有限公司 微型雾化结构
CN106862511B (zh) * 2017-03-06 2018-12-04 河钢股份有限公司邯郸分公司 连铸结晶器足辊过滤喷头
CN107649879A (zh) * 2017-11-20 2018-02-02 湖州织里川蜀机械有限公司 一种新型双头钻孔攻丝机
CN107855506A (zh) * 2017-11-27 2018-03-30 刘洋 用于轮毂的冷却设备
CN112098521A (zh) * 2020-09-21 2020-12-18 广东韶钢松山股份有限公司 一种喷嘴堵塞点检测方法、喷嘴维护方法及装置
EP4292716A1 (fr) 2022-06-15 2023-12-20 SMS Concast AG Procédé de fabrication d'un dispositif de buse de pulvérisation, en particulier servant à la pulvérisation d'un brin de coulée lors de la coulée des produits métalliques, ainsi que dispositif de buse de pulvérisation

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Also Published As

Publication number Publication date
KR20150042208A (ko) 2015-04-20
US20150231694A1 (en) 2015-08-20
CN104520012B (zh) 2021-03-30
BR112015003028A2 (pt) 2017-07-04
WO2014026992A2 (fr) 2014-02-20
CN104520012A (zh) 2015-04-15
WO2014026992A3 (fr) 2014-04-10
RU2015107120A (ru) 2016-10-10
EP2698210A1 (fr) 2014-02-19
US10286446B2 (en) 2019-05-14

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