EP2127755A1 - Guide d'écoulement avec vanne intégrée - Google Patents

Guide d'écoulement avec vanne intégrée Download PDF

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Publication number
EP2127755A1
EP2127755A1 EP08425330A EP08425330A EP2127755A1 EP 2127755 A1 EP2127755 A1 EP 2127755A1 EP 08425330 A EP08425330 A EP 08425330A EP 08425330 A EP08425330 A EP 08425330A EP 2127755 A1 EP2127755 A1 EP 2127755A1
Authority
EP
European Patent Office
Prior art keywords
flow
shutter
flow guide
guide according
segment
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.)
Withdrawn
Application number
EP08425330A
Other languages
German (de)
English (en)
Inventor
Federico Tonini
Paolo Strocchi
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.)
PNR ITALIA Srl
Original Assignee
PNR ITALIA Srl
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 PNR ITALIA Srl filed Critical PNR ITALIA Srl
Priority to EP08425330A priority Critical patent/EP2127755A1/fr
Publication of EP2127755A1 publication Critical patent/EP2127755A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
    • B05B1/3006—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the controlling element being actuated by the pressure of the fluid to be sprayed
    • 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
    • B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
    • B05B1/3402—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to avoid or to reduce turbulencies, e.g. comprising fluid flow straightening means
    • 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
    • B21B45/04—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 de-scaling, e.g. by brushing
    • B21B45/08—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 de-scaling, e.g. by brushing hydraulically

Definitions

  • the present invention relates to a flow guide for descaling nozzles, provided with a shutter which allows to interrupt the flow of liquid under a given pressure.
  • the hydraulic descaling process is performed by means of nozzles which, by operating at very high pressures (in average between 250 bars and 500 bars), generate a very-high speed blade jet which strikes the surface of the steel product (e.g. the slab) at a given angle and causes the mechanical detachment of the scale.
  • very high pressures in average between 250 bars and 500 bars
  • the nozzle is controlled by adjusting the pressure.
  • the pressure In order to make the nozzle inactive (no flow rate), the pressure should be cancelled but this implies the partial emptying of the hydraulic circuit and causes considerable time for restoring the operation of the nozzle (transient period). In order to minimize the transient period, it is necessary to leave the circuit at a minimum pressure but in this manner the nozzle continues to operate although in the simple dripping mode.
  • flow guides which combine the function of eliminating the turbulence and of interrupting the flow under a given pressure are used. In practice, these flow guides are made with an inner valve and are therefore named "flow guides with integrated valve".
  • Figure 1 shows one of the aforesaid flow guides currently available on the market; they consist of 5 components:
  • the geometry has been also developed to allow a rapid assembly and disassembly of all the components allowing cleaning and replacement thereof (unlike the known model in which the straightener is not easily extractable and does not allow the access and the cleaning of the inner part of the piston).

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Nozzles (AREA)
EP08425330A 2008-05-12 2008-05-12 Guide d'écoulement avec vanne intégrée Withdrawn EP2127755A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08425330A EP2127755A1 (fr) 2008-05-12 2008-05-12 Guide d'écoulement avec vanne intégrée

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08425330A EP2127755A1 (fr) 2008-05-12 2008-05-12 Guide d'écoulement avec vanne intégrée

Publications (1)

Publication Number Publication Date
EP2127755A1 true EP2127755A1 (fr) 2009-12-02

Family

ID=39684104

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08425330A Withdrawn EP2127755A1 (fr) 2008-05-12 2008-05-12 Guide d'écoulement avec vanne intégrée

Country Status (1)

Country Link
EP (1) EP2127755A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120298780A1 (en) * 2011-05-25 2012-11-29 Juergen Frick Check valve for spray nozzle and nozzle tube
CN104785554A (zh) * 2015-04-24 2015-07-22 合肥精工导卫配件有限责任公司 一种涡旋湍流管列式双供水高效水冷喷嘴
EP3031531A1 (fr) * 2014-12-09 2016-06-15 Aebi Schmidt Nederland BV Buse de fermeture d'un jet de liquide

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6261715A (ja) * 1985-09-13 1987-03-18 Supureeing Syst Japan Kk 圧力開閉バルブ内蔵型デスケ−リングノズル
JPH0679339A (ja) * 1992-01-24 1994-03-22 Nippon Steel Corp 開閉ピストンバルブ内蔵型のデスケーリングノズル

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6261715A (ja) * 1985-09-13 1987-03-18 Supureeing Syst Japan Kk 圧力開閉バルブ内蔵型デスケ−リングノズル
JPH0679339A (ja) * 1992-01-24 1994-03-22 Nippon Steel Corp 開閉ピストンバルブ内蔵型のデスケーリングノズル

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120298780A1 (en) * 2011-05-25 2012-11-29 Juergen Frick Check valve for spray nozzle and nozzle tube
EP2527699A3 (fr) * 2011-05-25 2013-02-20 Lechler GmbH Clapet anti-retour pour pulvérisateur et rampe de pulvérisation
US9377115B2 (en) 2011-05-25 2016-06-28 Lechler Gmbh Check valve for spray nozzle and nozzle tube
RU2593449C2 (ru) * 2011-05-25 2016-08-10 Лехлер ГмбХ Обратный клапан для распылителя и труба распылителя
EP3031531A1 (fr) * 2014-12-09 2016-06-15 Aebi Schmidt Nederland BV Buse de fermeture d'un jet de liquide
CN104785554A (zh) * 2015-04-24 2015-07-22 合肥精工导卫配件有限责任公司 一种涡旋湍流管列式双供水高效水冷喷嘴

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