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WO2012112056A1 - Dispositif de traitement de surfaces sous-marines avec un agent abrasif - Google Patents

Dispositif de traitement de surfaces sous-marines avec un agent abrasif Download PDF

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Publication number
WO2012112056A1
WO2012112056A1 PCT/NO2012/050023 NO2012050023W WO2012112056A1 WO 2012112056 A1 WO2012112056 A1 WO 2012112056A1 NO 2012050023 W NO2012050023 W NO 2012050023W WO 2012112056 A1 WO2012112056 A1 WO 2012112056A1
Authority
WO
WIPO (PCT)
Prior art keywords
fluid
ejector
adjutage
accordance
abrasive material
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.)
Ceased
Application number
PCT/NO2012/050023
Other languages
English (en)
Inventor
Tor Arthur ANDREASSEN
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.)
Neodrill AS
Original Assignee
Neodrill AS
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 Neodrill AS filed Critical Neodrill AS
Publication of WO2012112056A1 publication Critical patent/WO2012112056A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • B24C7/0007—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a liquid carrier
    • 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
    • B05B7/06—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane
    • B05B7/062—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane with only one liquid outlet and at least one gas outlet
    • B05B7/066—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane with only one liquid outlet and at least one gas outlet with an inner liquid outlet surrounded by at least one annular gas outlet
    • 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
    • B05B7/1404—Arrangements for supplying particulate material
    • B05B7/1472—Powder extracted from a powder container in a direction substantially opposite to gravity by a suction device dipped into the powder
    • 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
    • B05B7/149—Spray pistols or apparatus for discharging particulate material with separate inlets for a particulate material and a liquid 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
    • 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
    • B05B7/24—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 with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/2489—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 with means, e.g. a container, for supplying liquid or other fluent material to a discharge device an atomising fluid, e.g. a gas, being supplied to the discharge device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C3/00—Abrasive blasting machines or devices; Plants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C3/00—Abrasive blasting machines or devices; Plants
    • B24C3/02—Abrasive blasting machines or devices; Plants characterised by the arrangement of the component assemblies with respect to each other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C9/00—Appurtenances of abrasive blasting machines or devices, e.g. working chambers, arrangements for handling used abrasive material

Definitions

  • An apparatus for ejection of an abrasive material mixed with fluid, through an adjutage connected to a pressure fluid conduit is described.
  • a method for providing an outflow of an abrasive material mixed with fluid, through an adjutage connected to a pressure fluid conduit is also described.
  • the particle shaped, abrasive material normally in fluidized form, is transported through tubing and/or pipe connections from the sea surface, as it is mixed with a fluid, for example water, the fluidized mixture being put under such a high pressure that a
  • the invention has for its object to help or to reduce at least one of the disadvantages of prior art, or at least to present a useful alternative to prior art.
  • the invention provides an apparatus for ejection of an abrasive material mixed with fluid, through an adjutage, a supply line for a particle shaped, abrasive material running from a material inlet in a material supply to a first ejector arranged in a portion of the adjutage.
  • the adjutage is connected to a fluid supply installation arranged to provide pressurized fluid through the tip of a nozzle upstream of the first ejector.
  • the fluid typically has an overpressure of 200 bars.
  • the material inlet is made as a second ejector
  • the second ejector is provided with a fluid supply line which is in fluid communication with a fluid inlet.
  • Said fluid inlet may be provided in a mass of water surrounding the material storage.
  • the material storage may be in fluid communication with the surrounding environment.
  • a gas supply may be provided at an outlet portion of the adjutage, preferably encircling the entire outlet portion.
  • the fluid which flows at high speed out of the adjutage will with an ejector effect pull along with it the gas which then again will surround the jet and reduce the flow resistance between the jet and the
  • the invention more specifically relates to an apparatus for ejection of a fluid mixed, abrasive material through an adjutage connected to a pressure fluid conduit, characterized in that the adjutage is provided with a first ejector provided downstream of a pressure fluid nozzle, and a branch on the first ejector is through a supply line, arranged to be in fluid communication with a fluid source, and that the supply line is provided with a second ejector, arranged to be submerged in a mass of particle shaped, abrasive material.
  • the second ejector can in a fluid communicating way be connected to a fluid inlet arranged outside of a material storage holding the particle shaped abrasive material.
  • the material storage need not be arranged with a fluid supply for fluidizing the abrasive material.
  • the fluid inlet may be arranged in a mass of water which at least partly surrounds the material storage. Thereby there is no need for means for fluid supply over great distances, as for instance from a surface vessel.
  • the supply line, the second ejector or the fluid inlet may be provided with means arranged to regulate the flow rate of a material carrying fluid between the first and the second ejectors.
  • the pressure fluid jet of the adjutage can be used for washing of the surfaces to be treated, before and after the surface treatment with the abrasive material.
  • the gas supply at the periphery of the pressure fluid jet empirically increases the range of the jet underwater .
  • the gas nozzle may be annular, encircling the adjutage. Thus it is ensured that the entire circumference of the fluid pressure jet is enveloped by gas.
  • the gas nozzle may be an ejector.
  • the material storage may be defined by a container.
  • the same unit may therefore be used both for transport and storage of the abrasive material.
  • the material storage may be open towards a surrounding mass of water.
  • the abrasive material may thus be partly fluidized as it is lead into the supply line.
  • the invention relates more specifically to a method for providing an outflow of a fluidized, abrasive material through an adjutage connected to a pressure fluid conduit, characterized by the method comprising the following steps :
  • a gas flow may be provided out from one or more gas nozzles provided at an outlet portion of the adjutage, where the gas, as it leaves the outlet portion, envelopes a considerable portion of the circumference of the outflowing fluid jet.
  • Figure 1 shows a principle drawing of an apparatus according to the invention
  • Figure 2 shows in a larger scale, a section of a material storage where abrasive material is lead into a supply line through an ejector
  • Figure 3 shows in a smaller scale a principle drawing of an adjutage provided with a gas supply at an outlet portion
  • numeral 1 indicates an adjutage 1 which via a pressure fluid conduit 11 is connected to a pressure fluid installation 6, and via a supply line 2 is connected to a fluid source 5 and also a material storage 3 containing a particle shaped, abrasive material 4.
  • the material storage 3 is submerged in a mass of water which constitutes said fluid source 5.
  • the adjutage 1 is provided with a pressure fluid nozzle 12 which is in fluid communication with the pressure fluid conduit 11.
  • the centre bore 141 of a first ejector 14 is arranged downstream of the pressure fluid nozzle 12.
  • An outlet portion 13 constitutes an outlet for a jet 63 of a pressure fluid 62.
  • the pressure fluid installation 6 is, in a way known per se, provided with a pressure fluid source 61 which may be a remote reservoir 611 provided with at pump 612, the pump 612 possibly being provided with fluid from the surrounding mass of water 5.
  • a pressure fluid source 61 which may be a remote reservoir 611 provided with at pump 612, the pump 612 possibly being provided with fluid from the surrounding mass of water 5.
  • the adjutage 1 is connected to the supply line 2 via a branch 142 on the first ejector 14.
  • the supply line 2 is lead through the material source 3, here shown as a material container 31 provided with suitable conduit line passages, where it is submerged in the mass of abrasive material 4.
  • a second ejector 32 constitutes a portion of the submerged supply line 2 (see Figure 2 in particular) , and the supply line 2 ends in a fluid inlet 33 outside of the material storage 3.
  • the second ejector 32 is provided with a branch 321, here shown as openings, ending in the material storage 3.
  • the supply line 2 is provided with a flow control valve 21 arranged to close the supply line 2 completely.
  • FIG. 3 where an alternative embodiment of the invention is shown, the adjutage 1 being connected to a gas installation 7.
  • a gas nozzle 72 here shown as an annular nozzle, is provided at the outlet portion 13, and a gas 73, for example air, is brought into the gas nozzle 72 through a gas supply line 71.
  • the gas 73 flows out at the periphery of the pressure fluid jet 63 as this is leaving the adjutage 1.
  • the gas 73 thus constitutes a coating around the pressure fluid jet 63 as this enters into the medium surrounding the adjutage 1, for example the mass of water 5.
  • the gas nozzle 72 may be an ejector.
  • the adjutage 1 is directed towards the object, providing a pressure fluid jet 63.
  • the pressure fluid jet 63 might comprise of a pressure fluid 62 only.
  • the flow control valve 21 is opened to allow supply of fluid 51 through the supply line 2. Due to the underpressure at the branch 142 of the first ejector 14, fluid 51 is sucked in from the fluid inlet 33 of the supply line 2 and into the first ejector 14, and a flow through the second ejector 32 arises. Due to the
  • abrasive material 4 is sucked in from the material storage 3 through the branch 321, and the abrasive material 4 mixes with the fluid 51 and is carried therein to the adjutage 1, where the abrasive material 4 is mixed with the pressure fluid 62 and flows out of the adjutage 1 mixed into the pressure fluid jet 63.
  • gas 73 may, as shown in figure 3, be supplied as a coating enclosing at least portions of the pressure fluid jet 63. As the pressure fluid departs the adjutage 1, the effect of the gas 73 decreases, as it mixes with the pressure fluid and the surrounding mass of water 5.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nozzles (AREA)
  • Cleaning In General (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Abstract

L'invention concerne un appareil d'éjection d'un matériau abrasif fluidisé (4) à travers un ajutage (1) raccordé à un conduit (11) de fluide sous pression, l'ajutage étant muni d'un premier éjecteur (14) agencé en aval d'une première buse (12) de fluide sous pression, et une branche (142) du premier éjecteur (14) étant agencée en communication fluidique avec une source de fluide (5) par l'intermédiaire d'une ligne d'alimentation (2). Un second éjecteur (32) est agencé sur la ligne d'alimentation (2), ledit second éjecteur étant agencé pour être immergé dans une masse de matériau abrasif particulaire (4). L'invention concerne également un procédé permettant de délivrer un flux de sortie d'un matériau abrasif fluidisé (4) à travers un ajutage (1) raccordé à un conduit (11) de fluide sous pression.
PCT/NO2012/050023 2011-02-14 2012-02-14 Dispositif de traitement de surfaces sous-marines avec un agent abrasif Ceased WO2012112056A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO20110248 2011-02-14
NO20110248A NO334779B1 (no) 2011-02-14 2011-02-14 Anordning og fremgangsmåte for undervanns overflatebehandling med et abrasiv

Publications (1)

Publication Number Publication Date
WO2012112056A1 true WO2012112056A1 (fr) 2012-08-23

Family

ID=46672806

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NO2012/050023 Ceased WO2012112056A1 (fr) 2011-02-14 2012-02-14 Dispositif de traitement de surfaces sous-marines avec un agent abrasif

Country Status (2)

Country Link
NO (1) NO334779B1 (fr)
WO (1) WO2012112056A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103786065A (zh) * 2014-02-14 2014-05-14 哈尔滨工业大学 一种切削液喷雾装置
WO2018149524A1 (fr) * 2017-02-17 2018-08-23 Gema Switzerland Gmbh Injecteur de fourniture de poudre à tube de venturi

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4548001A (en) * 1980-05-16 1985-10-22 John Link Cleaning apparatus and method
US4709515A (en) * 1986-07-15 1987-12-01 Henry Copeland Wet sandblasting system
WO1988004220A1 (fr) * 1986-12-03 1988-06-16 K.G. McCOLL & COMPANY LIMITED Procede et appareil de sablage abrasif par voie humide
US5065551A (en) * 1988-03-02 1991-11-19 Cleaning Technology Limited Abrasive cleaning or cutting
JPH0639723A (ja) * 1992-07-08 1994-02-15 Kawasaki Heavy Ind Ltd アブレイシブウォータージェットの水中使用方法
JPH07186049A (ja) * 1993-12-24 1995-07-25 Japan Marine Sci & Technol Center アブレーシブジェット式水中切断方法及びその装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4548001A (en) * 1980-05-16 1985-10-22 John Link Cleaning apparatus and method
US4709515A (en) * 1986-07-15 1987-12-01 Henry Copeland Wet sandblasting system
WO1988004220A1 (fr) * 1986-12-03 1988-06-16 K.G. McCOLL & COMPANY LIMITED Procede et appareil de sablage abrasif par voie humide
US5065551A (en) * 1988-03-02 1991-11-19 Cleaning Technology Limited Abrasive cleaning or cutting
JPH0639723A (ja) * 1992-07-08 1994-02-15 Kawasaki Heavy Ind Ltd アブレイシブウォータージェットの水中使用方法
JPH07186049A (ja) * 1993-12-24 1995-07-25 Japan Marine Sci & Technol Center アブレーシブジェット式水中切断方法及びその装置

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103786065A (zh) * 2014-02-14 2014-05-14 哈尔滨工业大学 一种切削液喷雾装置
WO2018149524A1 (fr) * 2017-02-17 2018-08-23 Gema Switzerland Gmbh Injecteur de fourniture de poudre à tube de venturi
CN110352097A (zh) * 2017-02-17 2019-10-18 瑞士金马有限公司 用于输送涂层粉末的粉末输送喷射器以及文丘里喷嘴组件
US11446683B2 (en) 2017-02-17 2022-09-20 Gema Switzerland Gmbh Powder conveying injector for conveying coating powder and Venturi nozzle assembly

Also Published As

Publication number Publication date
NO334779B1 (no) 2014-05-26
NO20110248A1 (no) 2012-08-15

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