EP0061756B1 - Dispositif pour le traitement de surface de constructions et de navires - Google Patents

Dispositif pour le traitement de surface de constructions et de navires Download PDF

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Publication number
EP0061756B1
EP0061756B1 EP82102621A EP82102621A EP0061756B1 EP 0061756 B1 EP0061756 B1 EP 0061756B1 EP 82102621 A EP82102621 A EP 82102621A EP 82102621 A EP82102621 A EP 82102621A EP 0061756 B1 EP0061756 B1 EP 0061756B1
Authority
EP
European Patent Office
Prior art keywords
nozzle
pressure
outlet nozzle
shunt
blasting
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
Application number
EP82102621A
Other languages
German (de)
English (en)
Other versions
EP0061756A1 (fr
Inventor
Uwe Richter
Hans Kellershofen
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.)
GKSS Forshungszentrum Geesthacht GmbH
H LORENZ GmbH
Original Assignee
GKSS Forshungszentrum Geesthacht GmbH
H LORENZ GmbH
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 GKSS Forshungszentrum Geesthacht GmbH, H LORENZ GmbH filed Critical GKSS Forshungszentrum Geesthacht GmbH
Priority to AT82102621T priority Critical patent/ATE11233T1/de
Publication of EP0061756A1 publication Critical patent/EP0061756A1/fr
Application granted granted Critical
Publication of EP0061756B1 publication Critical patent/EP0061756B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B59/00—Hull protection specially adapted for vessels; Cleaning devices specially adapted for vessels
    • B63B59/06—Cleaning devices for hulls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B17/00—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups
    • 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
    • B05B7/14—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 designed for spraying particulate materials
    • B05B7/1481—Spray pistols or apparatus for discharging particulate material
    • B05B7/1486—Spray pistols or apparatus for discharging particulate material for spraying particulate material in dry state
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C7/00—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts
    • B24C7/0046—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a gaseous carrier
    • B24C7/0069—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a gaseous carrier with means for preventing clogging of the equipment or for preventing abrasive entering the airway

Definitions

  • the invention relates to a device for the surface treatment of structures and ships, which can also be carried out under water, with a cleaning, preserving or coating blasting agent which is blasted onto the surface to be treated with a compressed gas stream via an at least partially flexible line provided to the work station, with an outlet nozzle, the Discharge nozzle is designed as a Laval nozzle.
  • Compressed air blasting as free blasting is a proven method for surface treatment of the blasting material.
  • the method requires a compressor as a compressed air source, a compressed air dryer, a compressed air filter, a blasting agent container for metering in the blasting agent and a hose line with a nozzle, which is usually a Laval nozzle.
  • the performance of the process is determined by the parameter field air delivery quantity of the compressor depending on the required final pressure, abrasive throughput, hose length, pressure in front of the nozzle and nozzle size.
  • typical working values under normal conditions are: 8 mm nozzle diameter, 250 mm distance from the surface of the blasting material and 80 mm blasting spot diameter, corresponding to about 5000 mm 2 Beam area.
  • the abrasive throughput depends on the required surface quality. Understandably, less blasting media is required for cleaning than to achieve a bare metal surface with a certain roughness depth.
  • the object of the invention is to provide an improved device which, based on the above-described prior art, makes it possible to use such blasting processes with higher efficiency.
  • outlet nozzle is provided with a funnel-shaped nozzle attachment which encloses an elongated paraboloid-shaped interior.
  • the shunt provided according to the invention can be regulated in such a way that the line leading to the underwater work station and the nozzle can be kept dry and free of water even in times without blasting agent supply.
  • a relatively low overpressure is sufficient for the compressed gas passed through the shunt, which ensures that the compressed gas bubbles out at all times at the free end of the outlet nozzle and thereby prevents water from entering.
  • the blasting system shown in Fig. 1 contains a large part of conventional components. These conventional components include a compressor 1, which feeds the compressed air supply line 4 via a water separator 2 and an air filter 3.
  • a pressure measuring point 5 Between the compressor 1 and the water separator 2 there is a pressure measuring point 5 and a shut-off valve 6.
  • the blasting agent container 20 containing the blasting agent with a closable refill opening 21, a line 22 which pressurizes the blasting agent container and is provided with a control valve, which leads to the Supply line 4 is connected and also a pressure relief valve 23.
  • the refill opening 21 When the refill opening 21 is open, the blasting agent to be used for cleaning, preserving or coating can be refilled from a storage container 24 via a feed line 25 or a funnel.
  • the blasting agent container 20 contains quartz sand, corundum, copper slag, natural or artificial mineral granules, cork or the like.
  • such blasting agents can also be used for the intended underwater use with only one use of the blasting agent which, because of the danger to the respiratory tract of the worker operating the device, may no longer be used or may only be used under special protective conditions.
  • a nozzle attachment 12 is connected to the Laval nozzle 9.
  • a sleeve 10 which overlaps the free end of the nozzle and is held releasably and interchangeably with screws 11 is used to fasten the nozzle attachment 12.
  • the funnel-shaped nozzle attachment 12 encloses an elongated paraboloid-shaped interior and has a length which corresponds essentially to the required working distance between the Laval nozzle 9 and the surface 50 to be treated. This length is z. B. for a nozzle attachment with 50 mm outlet diameter about 250 mm.
  • a shunt control 30 is provided according to the invention.
  • This shunt control 30 is connected on the inlet side via a line 31 to the outlet of the air filter 3 and on the outlet side via a control valve 32 to a part of the supply line 4 located downstream of the blasting agent container.
  • the line system 31 -30-32 thus bridges the part of the supply line 4 in which the blasting agent is fed into the supply line 4 via a discharge valve 26.
  • the compressed gas - preferably air - discharged into the blasting hose 8 via the shunt must have a pressure which is slightly above the water pressure at the place of use 41.
  • a control line 36 leads from the shunt 30 to the underwater work station.
  • the pressure detected in the bypass 30 at a pressure measuring point 38 directly influences a control valve 35 of the bypass and adjusts it so that small amounts of compressed air are constantly emitted at the jet nozzle attachment 12.
  • additional pressure gauges 33 and 34 can be provided in the shunt control arranged above water in order to be able to read the normal working pressure and the pressure reduced in the shunt.
  • the blasting device can be switched on and off in the simplest possible manner by the diver at the underwater work station 41, there is a button 51 next to the blasting nozzle 9, with which a control unit 53 located above water can be actuated via a signal line 52.
  • the control unit 53 is used to switch on the blasting agent supply, i.e. the control unit 53 acts directly on the metering valve 26 of the blasting agent container 20 or, if this is permanently set, on the main shut-off valve 7 of the compressed air supply line 4. It is also possible to act on the shunt 30 with the control unit 53. As a rule, however, the shunt will be left open so that water cannot penetrate at the blasting nozzle attachment when the blasting agent addition is switched on and off.
  • the device according to the invention leads to a safe and economical above- and underwater working method for standard-compliant surface treatment with a high degree of purity and required roughness depth while at the same time significantly increasing the area coverage and reducing the abrasive consumption.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Nozzles (AREA)
  • Prevention Of Fouling (AREA)
  • Steroid Compounds (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Special Spraying Apparatus (AREA)

Claims (5)

1. Appareillage pour le traitement, pouvant être également effectué sous l'eau, de surfaces de bâtiments et de navires avec un agent de projection à effet de nettoyage, de protection ou de revêtement, qui est projeté sur la surface à traiter (50) au moyen d'un courant de gaz comprimé et par l'intermédiaire d'un conduit au moins partiellement flexible (8) aboutissant au lieu de travail (41 ). et pourvu d'une buse de sortie (9), cette buse de sortie étant agencée sous la forme d'une tuyère de Laval, caractérisé en ce que la buse de sortie (9) est pourvue d'un appendice de buse (12) en forme d'entonnoir entourant un volume intérieur de profil allongé en forme de paraboloïde.
2. Appareillage selon la revendication 1 pour une application sous-marine, caractérisé en ce que la longueur de l'appendice de buse (12) correspond sensiblement à la distance nécessaire d'espacement opératoire entre la buse ou tuyère de Laval (9) et la surface à traiter (50).
3. Appareillage selon l'une des revendications 1 ou 2, caractérisé en ce qu'il est prévu, entre la source de gaz comprimé (1 ) et le conduit (4, 8) aboutissant à la buse de sortie (9), une dérivation additionnelle (30) pour le gaz comprimé, réglable et contournant la source d'agent de projection (20).
4. Appareillage selon la revendication 3, caractérisé en ce que la dérivation réglable (30) est pourvue d'un conduit de commande (36) aboutissant à un lieu de travail sous-marin (4) et d'un dispositif de mesure de pression (38) captant la pression de l'eau, qui maintient le gaz comprimé passant dans la dérivation (30) à une pression supérieure à la pression de l'eau.
5. Appareillage selon l'une des revendications 1 à 4, caractérisé en ce qu'il est prévu, sur le lieu de travail sous-marin (4), une télécommande (51,52, 53) pour la décharge d'agent de projection dans le courant de gaz sous pression.
EP82102621A 1981-04-01 1982-03-29 Dispositif pour le traitement de surface de constructions et de navires Expired EP0061756B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82102621T ATE11233T1 (de) 1981-04-01 1982-03-29 Vorrichtung zur oberflaechenbehandlung von bauwerken und schiffen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3113028 1981-04-01
DE3113028A DE3113028C2 (de) 1981-04-01 1981-04-01 Vorrichtung zur Oberflächenbehandlung von Unterwasserbauwerken und Schiffen

Publications (2)

Publication Number Publication Date
EP0061756A1 EP0061756A1 (fr) 1982-10-06
EP0061756B1 true EP0061756B1 (fr) 1985-01-16

Family

ID=6128991

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82102621A Expired EP0061756B1 (fr) 1981-04-01 1982-03-29 Dispositif pour le traitement de surface de constructions et de navires

Country Status (9)

Country Link
US (1) US4545317A (fr)
EP (1) EP0061756B1 (fr)
JP (1) JPS58500438A (fr)
AT (1) ATE11233T1 (fr)
CA (1) CA1182632A (fr)
DE (2) DE3113028C2 (fr)
DK (1) DK149425C (fr)
ES (1) ES8303217A1 (fr)
WO (1) WO1982003346A1 (fr)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5200230A (en) * 1987-06-29 1993-04-06 Dunfries Investments Limited Laser coating process
BR8907294A (pt) * 1988-03-02 1991-03-12 Cleaning Tech Ltd Aparelho e processo para a limpeza e/ou corte por jato abrasivo e valvula
US4830280A (en) * 1988-03-21 1989-05-16 Yankoff Gerald K Nozzle
US5484325A (en) * 1993-10-07 1996-01-16 Church & Dwight Co., Inc. Blast nozzle containing water atomizer for dust control
FR2723020B1 (fr) * 1994-07-26 1996-09-27 Kegler Maurice Machine de sablage a commande a distance
DE4430133C2 (de) * 1994-08-25 1996-08-29 Hubert Busch Strahlkessel zum Ausbringen eines Strahlmittels
US5647201A (en) * 1995-08-02 1997-07-15 Trw Inc. Cavitating venturi for low reynolds number flows
WO1998006514A1 (fr) * 1996-08-09 1998-02-19 Alfred Kärcher GmbH & Co. Appareil de nettoyage haute pression
JPH1112721A (ja) * 1997-06-25 1999-01-19 Sony Corp ガス導入管及びこれを用いた磁気記録媒体の製造方法
AU3657497A (en) * 1997-07-11 1999-02-08 Waterjet International, Inc. Method and apparatus for producing a high-velocity particle stream
PT994764E (pt) 1997-07-11 2003-03-31 Waterjet Technology Inc Metodo e aparelho para produzir uma corrente de particulas de alta velocidade
KR100504629B1 (ko) 1997-07-11 2005-08-03 워터제트 테크놀로지 인코퍼레이티드 고속 입자 스트림을 생성하기 위한 방법 및 장치
RU2123957C1 (ru) * 1998-06-18 1998-12-27 Макитрук Александр Александрович Способ подводной гидродинамической очистки корпусов судов и устройство для его осуществления
FR2783735B1 (fr) * 1998-09-29 2000-12-15 Patrick Loubeyre Dispositif pour la decontamination des surfaces au moyen d'un jet compose d'air, d'une matiere de projection a grains fins et d'un liquide
US6350185B1 (en) * 2000-02-09 2002-02-26 Space Systems/Loral, Inc. Grit blast nozzle for surface preparation of tube
RU2163877C1 (ru) * 2000-07-12 2001-03-10 Игнатьев Александр Викторович Инструмент для подводной очистки поверхности и сопло для инструмента
GB2372718B (en) * 2001-01-04 2004-07-14 Workinter Ltd Nozzle intended for the concentrated distribution of a fluid for scouring of surfaces
US6626738B1 (en) * 2002-05-28 2003-09-30 Shank Manufacturing Performance fan nozzle
US20030236489A1 (en) 2002-06-21 2003-12-25 Baxter International, Inc. Method and apparatus for closed-loop flow control system
AU2012340120B2 (en) * 2011-11-18 2017-07-20 Arizona Board Of Regents, A Body Corporate Of The State Of Arizona, Acting For And On Behalf Of Arizona State University System and method for providing a micron-scale continuous liquid jet
US10086497B1 (en) * 2012-04-27 2018-10-02 Chukar Waterjet, Inc. Submersible liquid jet apparatus
US9132529B2 (en) * 2012-12-07 2015-09-15 United Technologies Corporation Media blast nozzle with non-metallic threads
KR101305256B1 (ko) * 2012-12-18 2013-09-06 포항공과대학교 산학협력단 초고속 균일 나노 입자 생성 노즐, 생성 장치 및 생성 방법
US10081091B2 (en) * 2015-06-12 2018-09-25 Postech Academy-Industry Foundation Nozzle, device, and method for high-speed generation of uniform nanoparticles
CN113042295B (zh) * 2021-03-18 2022-12-06 中建三局绿色产业投资有限公司 一种水利水下补漆设备
EP4205905A1 (fr) * 2021-12-30 2023-07-05 SR Robotics Sp. z.o.o. Dispositif de coupe sous haute pression, sous-marin et commandé à distance, utilisant un produit abrasif, et un procédé de coupage et d'alimentation en matériau abrasif

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR960172A (fr) * 1950-04-14
GB392826A (en) * 1932-10-25 1933-05-25 Ronald Alfred Gilbert Improvements in or relating to blasting nozzles for surface treating plant
US2583726A (en) * 1948-01-26 1952-01-29 Chalom Joseph Aaron Nozzle
US2666279A (en) * 1949-01-17 1954-01-19 Chalom Joseph Aron Nozzle for expansion and compression of gases
US3070924A (en) * 1958-02-04 1963-01-01 Hastrup Herman Remote control system for fluid actuated mechanism
US3256642A (en) * 1963-11-07 1966-06-21 Rocco P Fonti Underwater sandblasting gun
US3323257A (en) * 1964-08-20 1967-06-06 Rocco P Fonti Systems for underwater sandblasting
JPS4411597Y1 (fr) * 1965-09-30 1969-05-14
DE1804860A1 (de) * 1968-10-24 1970-05-06 Paul Hammelmann Presswasserbetriebene,selbsthaftende Reinigungsvorrichtung sowie Verfahren zur Flaechenreinigung
DE2450510A1 (de) * 1974-10-24 1976-04-29 Woma Maasberg Co Gmbh W Vorrichtung zum behandeln von oberflaechen
JPS5310023A (en) * 1976-07-14 1978-01-30 Honda Motor Co Ltd Ac generator
US4209952A (en) * 1977-09-12 1980-07-01 F. A. Hughes And Company Limited Underwater jet blasting apparatus
DE2848436C2 (de) * 1978-11-08 1982-05-06 Paul 4740 Oelde Hammelmann Vorrichtung zum Reinigen des Schiffbodens beim Eindocken eines Schiffes

Also Published As

Publication number Publication date
CA1182632A (fr) 1985-02-19
DK427382A (da) 1982-10-14
JPS58500438A (ja) 1983-03-24
DE3113028A1 (de) 1982-10-28
EP0061756A1 (fr) 1982-10-06
ES511025A0 (es) 1983-02-01
ATE11233T1 (de) 1985-02-15
US4545317A (en) 1985-10-08
DK149425C (da) 1986-11-17
ES8303217A1 (es) 1983-02-01
WO1982003346A1 (fr) 1982-10-14
DE3261903D1 (en) 1985-02-28
DK149425B (da) 1986-06-09
DE3113028C2 (de) 1983-10-13

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