EP3216531A1 - Dispositif et procede de nettoyage d'une surface immergee - Google Patents

Dispositif et procede de nettoyage d'une surface immergee Download PDF

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Publication number
EP3216531A1
EP3216531A1 EP16159567.3A EP16159567A EP3216531A1 EP 3216531 A1 EP3216531 A1 EP 3216531A1 EP 16159567 A EP16159567 A EP 16159567A EP 3216531 A1 EP3216531 A1 EP 3216531A1
Authority
EP
European Patent Office
Prior art keywords
cavitation
cleaning
cleaning device
housing
water
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Withdrawn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
EP16159567.3A
Other languages
German (de)
English (en)
Inventor
Claus Mayer
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.)
Nordseetaucher GmbH
Original Assignee
Nordseetaucher 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 Nordseetaucher GmbH filed Critical Nordseetaucher GmbH
Priority to EP16159567.3A priority Critical patent/EP3216531A1/fr
Publication of EP3216531A1 publication Critical patent/EP3216531A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02—Cleaning by the force of jets or sprays
    • B08B3/026—Cleaning by making use of hand-held spray guns; Fluid preparations therefor
    • 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
    • B63B59/08—Cleaning devices for hulls of underwater surfaces while afloat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B2203/00—Details of cleaning machines or methods involving the use or presence of liquid or steam
    • B08B2203/02—Details of machines or methods for cleaning by the force of jets or sprays
    • B08B2203/0211—Case coverings

Definitions

  • the invention relates to a cleaning device for cleaning a submerged surface, comprising at least one cavitation unit, which is designed to generate a cavitation stream and to provide this cavitation stream in a working area, wherein the cavitation stream comprises a plurality of cavitation bubbles and in the active cleaning operation of the cleaning device the work area adjoins or includes the surface to be cleaned. Furthermore, the invention relates to a cleaning system for cleaning submerged surfaces. The invention also relates to a method for cleaning a submerged surface in a body of water and the use of a cleaning device.
  • the cleaning of underwater surfaces is for example in boats or ships, but also in maritime facilities, such as sheet pile walls in ports, of great Interest.
  • a submerged surface should be understood in the context of the present specification to be generally a surface located below the level of the water in a body of water.
  • the waters may be both fresh water (lakes, rivers and ponds), salt water (oceans and oceans) and brackish water.
  • a fouling community of marine or freshwater organisms is formed within a short time. It achieves considerable thickness and strength and leads to a weight increase of the vessel on the one hand and to a considerable increase in the frictional resistance on the other. This leads to a reduced cruising speed of the watercraft and to an increased fuel consumption.
  • biocide-containing antifouling coatings or paints have been used on the underwater vessel to protect against marine vegetation, which kill the vegetation.
  • these coatings have the disadvantage that they affect the quality of the water.
  • a cleaning device for cleaning an underwater surface comprising at least one cavitation unit, which is set up for generating a cavitation stream and for providing this cavitation stream in a working area, wherein the cavitation stream comprises a plurality of cavitation bubbles and in the active cleaning mode the cleaning device, the work area adjoins the surface to be cleaned or includes, wherein the cleaning device is formed by the fact that the cleaning device comprises a housing open on one side, which has at least one suction opening and the work area at least partially surrounds.
  • the submerged surface is cleaned by means of the cavitation stream without the use of harmful poisons.
  • the cavitation system is based on the physical effect of cavitation. This has proven to be highly effective against contamination on submerged surfaces. Maritime vegetation in particular can be removed very efficiently from submerged surfaces. The cleaning effect arises simplified explained by the fact that the cavitation bubbles burst at or near the surface to be cleaned. In this phenomenon, the implosion of the Kavitationsbläschens a pressure surge or a pressure wave with very high pressure peaks.
  • the contaminants removed from the surface for example marine vegetation, do not reach the surrounding water in the cleaning device. They remain at least for the most part in the housing.
  • the wastewater produced during the cleaning process can be removed through the suction opening from the area of the surface to be cleaned, in particular from the working area of the cleaning device.
  • the cleaning device is highly effective and at the same time very environmentally friendly.
  • the contaminants removed from the surface do not enter the surrounding waters, but are removed from the work area. This also improves the visibility of the diver who operates the cleaning device. After cleaning, there is a smooth surface that inhibits the inevitable re-emergence of biological growth. The required cleaning frequency is greatly reduced.
  • the use of the cleaning device is therefore not only highly efficient and very environmentally friendly, but also very economical.
  • the cleaning device is formed by the fact that the housing dome-shaped curved at its closed first side and having a work opening at its opposite open second side.
  • the housing comprises a collar-shaped sealing collar, which is connected to an edge of the housing, which surrounds the working opening.
  • the collar-shaped sealing collar allows a reliable fluidic separation between the working area enclosed by the housing and the surrounding water.
  • the working area permanently deprived of water through the suction opening.
  • the sealing collar makes it possible to choose the gap between the surface to be cleaned and the edge of the housing particularly narrow.
  • the cleaning device is placed with the edge of the sealing sleeve on the surface to be cleaned.
  • the sealing sleeve is preferably made of a flexible material, for example rubber.
  • the flexible material of the sealing collar also prevents the preferably dimensionally stable housing of the cleaning device comes into contact with the surface to be cleaned. If this is, for example, a ship's hull, damage to the underwater hull or its paint is effectively prevented.
  • the cleaning device is further developed in that the cavitation unit is a nozzle unit.
  • the cavitation unit is a nozzle unit.
  • the housing surrounds an interior at least partially, wherein the nozzle unit is received in this interior.
  • the hydrodynamic generation of a cavitation stream can be realized very robustly with manageable technical effort. For this reason, it is particularly suitable for underwater use. It shows no erosion problems and has a high energy efficiency. Furthermore, it is hydrodynamically easily possible to generate the desired cavitation stream so that it defines in a workspace.
  • the arrangement of the nozzle unit in the interior of the housing at least partially surrounded a particularly compact cleaning device is provided.
  • the cleaning device is furthermore preferably developed by virtue of the fact that the nozzle unit comprises at least one cavitation nozzle which is rotatable or rotating about a rotation axis and the interior of the housing is at least approximately rotationally symmetrical to the axis of rotation.
  • the nozzle unit preferably has two or more rotating cavitation nozzles. Such a rotatable or rotating arrangement has proven to be particularly effective in practice.
  • the housing of the cleaning device is preferably dimensionally stable and further preferably made of a plastic material.
  • a fiber-reinforced plastic material is suitable.
  • the housing is reinforced with a collar, for example with a metal sleeve.
  • Such a reinforcement is provided in particular in the region of the collar-shaped sealing collar or along an edge of the working opening.
  • the cleaning device is also in particular a hand-held underwater tool. It is due to their compact size, their diameter is for example between 0.2 m and 0.5 m, easily operated by a diver. It is also preferably constructed so as not to generate recoil.
  • magnets In order to improve the adhesion of the device to the surface to be cleaned, it can be provided with magnets.
  • magnetizable surfaces to be cleaned for example sheet piles
  • an attractive force acts between these magnets and, for example, the sheet pile wall, so that the cleaning device is conveniently guided by a working diver can be.
  • rollers or a ball bearing are provided on the housing of the cleaning device. These allow the diver to drive the cleaning device over the underwater surface to be cleaned, and in particular to prevent the housing of the cleaning device from becoming snug on the surface to be cleaned.
  • rollers or ball bearings are arranged in particular within the housing and protrude slightly on the underside thereof, at which the suction opening is located. The rollers or ball bearings are just as far out of the housing, that the reliable sealing of the housing by means of the suction opening surrounding the sealing lip is not called into question, but the housing is not sucked, so a minimum gap is maintained to be cleaned surface.
  • the cleaning device comprises a jet drive (water jet) fastened to the housing.
  • a jet drive water jet
  • the jet propulsion system is also designed, in particular, pivotable, so that the diver operating the cleaning device can easily control the movement of the cleaning device on the surface to be cleaned by means of the jet propulsion.
  • the existing in the housing of the cleaning device working opening preferably defines a plane.
  • a defined by this level first half-space is completed by the housing opposite the plane.
  • this half space is, for example, the Cavitation unit, in particular the nozzle unit arranged.
  • the second hemisphere defined by the plane is not bounded by the housing, in it lies the surface to be cleaned or adjoins the plane.
  • the object is further achieved by a cleaning system for cleaning submerged surfaces, this cleaning system being developed by comprising at least one cleaning device according to one or more of the aforementioned aspects.
  • the cleaning system further comprises a supply unit, which comprises a filter, wherein the supply unit is coupled via a suction with the at least one suction opening of the cleaning device and is adapted to suck via the suction line a cleaning process wastewater from the work area, feed the filter and deliver filtered water ,
  • the cleaning system reduces the pollution caused by cleaning to an absolute minimum. By filtering the wastewater produced in the cleaning process, any substances that pollute and pollute the waters are separated before the purified wastewater is returned to the water. Possibly detached by the cleaning process impurities, such as paint or paint particles, antifouling coating or the like. Do not get into the water. They are collected in the filter of the supply unit and can be disposed of properly after the cleaning process.
  • the cleaning system can be used in sensitive water systems. Also a large-scale use of the cleaning system, in which large amounts of wastewater and from underwater Surfaces detached contaminants occur, neither a technical nor an economic problem. Since the wastewater can be returned immediately back into the water, there is no need for caching or disposal of the wastewater.
  • the filter of the supply unit can be dimensioned according to the accumulated amount of detached impurities. Since the supply unit is also preferably located on land, the filter can be easily changed.
  • the cleaning system is developed in particular by the fact that the supply unit is coupled via a pressure line to the cavitation unit of the cleaning device and is adapted to supply the cavitation unit for generating the cavitation stream with pressurized water.
  • the supply unit has, for example, a compressor which supplies the cleaning unit, or more precisely its cavitation unit, with the pressurized water necessary for the hydrodynamic generation of a cavitation stream.
  • the supply of the cleaning device as well as the treatment of the waste water preferably take place in the onshore supply unit. So the cleaning device itself remains very compact. The possibly regular maintenance operations to subjecting components of the supply unit are efficient and easily accessible.
  • the method has the same or similar advantages as previously mentioned with regard to the cleaning system and the cleaning device. Repetitions should therefore be omitted.
  • the cavitation stream is generated hydrodynamically.
  • the cavitation stream is produced with a nozzle unit which is arranged in an interior partially surrounded by a housing partially open on one side, wherein the wastewater produced in the cleaning process is sucked off by at least one suction opening in the housing ,
  • the object is also achieved by the use of a cleaning device according to one or more of the abovementioned aspects for cleaning, in particular for removing maritime vegetation, from a surface located under water in a body of water.
  • Fig. 1 shows a simplified perspective view of a cleaning device 2 for cleaning a submerged surface 44 (see also Fig. 4 and 6 ).
  • the cleaning device 2 is designed, for example, for cleaning a sheet pile wall 46 in a harbor basin or for cleaning the underwater vessel of a boat or ship.
  • the cleaning device 2 comprises a housing 4 which is open on one side. This has, for example, four suction pockets 6 distributed uniformly along the circumference of the housing 4. In the perspective view of Fig. 1 only two of the four suction pockets 6 are visible. The interior spaces of the suction pockets 6 communicate with suction openings 48 present in the housing 4 (cf. Fig. 4 ), so that on the suction hoses 8 during the cleaning process resulting wastewater can be sucked out of the interior of the housing 4.
  • the suction hoses 8 are coupled to a central double tee 10, so that the waste water can be pumped off at a suction nozzle 12, as indicated schematically by an arrow.
  • a cavitation unit 50 in particular a nozzle unit, which can be operated via the handle 14.
  • a connector 16 On the handle 14 is a connector 16 to which a pressure line 18 is connected.
  • the cavitation unit 50 hydrodynamically generates a cavitation stream 60 from the high-pressure water stream. This takes place, for example, by directing the stream of water onto an edge.
  • the cavitation stream 60 comprises a plurality of cavitation bubbles.
  • the submerged surface 44 is cleaned by means of the cavitation stream, dispensing with the use of chemical aids.
  • the cleaning process is based on the physical effect of cavitation. This has proven to be highly effective against contamination, such as marine vegetation 72, on submerged surfaces 44.
  • the cleaning effect arises simplified explained by the fact that the Kavitationsbläschen burst at or near the surface to be cleaned 44. In this process, the implosion of the cavitation bubble creates a pressure surge or a pressure wave with very high pressure peaks.
  • the housing 4 is optionally reinforced with a metal collar 20.
  • a metal collar 20 This is made of aluminum, for example. It comprises a lower ring 22, webs 24 and an upper ring 26.
  • the housing 4 is at its first closed side, which in Fig. 1 shown above, dome-shaped domed. On its opposite second side, in Fig. 1 below, the case is open. At this second side of the housing 4, the lower edge 28 surrounds a working opening 30. It faces the surface 44 to be cleaned during operation of the cleaning device 2.
  • Fig. 2 the cleaning device 2 is shown in a simplified schematic side view.
  • the suction hoses 8 and the handle 14 are not shown.
  • the working opening 30 is located at the in Fig. 2 lower side of the housing 4.
  • the lower edge 28 is surrounded by a collar-shaped sealing collar 32 in the illustrated embodiment. This is made of a flexible material, such as rubber.
  • the suction hoses 8 are connected to connecting pieces 34 of the suction pockets 6.
  • the housing 4 comprises a central dome 36, which is connected to the upper ring 26, the metal collar 20, not otherwise shown.
  • the handle 14 is placed centrally, so that the present in the interior of the housing 4 cavitation unit 50 is operable.
  • Fig. 3 shows the cleaning device 2 in a schematically simplified plan view.
  • the suction pockets 6 are preferably distributed uniformly along the circumference of the housing 4.
  • the dome 36 is connected to the lower part of the housing 4 by means of suitable screws 38, for example.
  • Fig. 4 shows a schematically simplified sectional view along the in Fig. 3 level designated IV-IV.
  • the housing 4 encloses an interior 40, in which preferably also in Fig. 4 not shown cavitation unit 50 is arranged.
  • the cavitation unit 50 is configured to generate a cavitation stream 60 and to provide it in a work area 42 (outlined with a dashed line).
  • the work area 42 is merely exemplified in FIG Fig. 4 drawn form shown. It is determined in the application of the cleaning device 2 by the cavitation stream 60 and the type of cavitation unit 50.
  • the workspace 42 substantially corresponds to a reaction volume of the cavitation bubbles present in the cavitation stream 60.
  • the working area 42 adjoins or comprises a surface 44 to be cleaned.
  • Fig. 4 is exemplary and partially shown the surface 44 of a sheet pile wall 46 to be cleaned. From the surface to be cleaned 44 detached impurities, such as maritime vegetation, enter the interior 40 of the housing 4. Subsequently, they are conveyed through the suction openings 48 first into the suction pockets 6 and then through the connecting piece 34 and the suction 8 to the suction 12. Via a suction line connected thereto, the wastewater, including the contaminants, reaches a filter 76 of a supply unit 74 described below (cf. Fig. 6 ). The transport of impurities is exemplary and schematic in FIG Fig. 4 indicated by arrows.
  • the sealing collar 32 comprises an inner sealing lip 54 and an outer sealing lip 56 Fig. 5 these two elements are shown schematically simplified only dashed.
  • the lower ring 22 of the metal collar 20 is located between the inner and outer sealing lips 54, 56. It serves to reinforce the lower edge 28 of the housing 4.
  • the sealing collar 32 makes it possible to have a very narrow working gap 58 between the parts to be cleaned Surface 44 and the lower edge 28 of the housing 4 to realize.
  • the inner space 40 becomes fluidically very well from a body 88 surrounding the housing 4 on the outside (cf. Fig. 6 ) separated. Contaminants removed from the surface 44 and possibly the surrounding waters 88 polluting substances such as paint or paint residues or parts of antifouling coating are reliably conveyed away from the interior 40 of the housing 4 and do not get into the surrounding waters 88th
  • Fig. 5 shows the cleaning device 2 in a schematically simplified view of its underside ago, so with a view of the work opening 30.
  • a cavitation unit 50 is an example of a nozzle unit is provided. This also includes, by way of example, two nozzles 52, 52 'which are rotatable about an axis of rotation R.
  • the cavitation unit 50 which is preferably arranged in the interior 40 of the housing 4, hydrodynamically generates a cavitation stream 60 which comprises a large number of cavitation bubbles.
  • the cavitation stream 60 is distributed in the interior 40 of the housing 4.
  • the interior 40 of the housing 4 to the Rotation axis R is at least approximately rotationally symmetrical.
  • FIG. 5 shows a cleaning system 70 for cleaning a surface 44 located below the water surface 86 in a body of water 88.
  • the surface 44 to be cleaned is a sheet pile wall 46 in a harbor basin where marine vegetation 72 has formed as an impurity.
  • the cleaning system 70 comprises a cleaning device 2 according to one or more of the aforementioned embodiments.
  • the cleaning system 70 includes a supply unit 74 that includes a filter 76 and a compressor 78.
  • the supply unit 74 is connected to the cleaning device via a suction line 80 2 coupled.
  • the suction line 80 communicates with at least one of the suction openings 48. This is done by the suction line 80 preferably to the suction nozzle 12 of the double tee 10 (see. Fig. 1 ) is coupled. So it is possible to suck waste water from the interior 40. During the cleaning process resulting and present in the wastewater impurities are also sucked and fed to the filter 76. Filtered wastewater then passes through the return line 82 back into the water 88, for example, in a harbor basin. Wastewater from the cleaning process is extracted from the working area 42, fed to the filter 76 and filtered wastewater is discharged again by the cleaning system 70, namely via the return line 82.
  • the supply unit 74 is further connected to the cavitation unit 50 (see. Fig. 5 ) of the cleaning device 2 coupled.
  • the pressure line 18 is acted upon by the compressor 78 with pressurized water.
  • the body of water 88 for example the harbor basin, is taken off via an intake line 84.
  • the pressurized water is directed in the cavitation unit 50, for example, on a sharp edge, so that the Kavitationsstrom 60 is formed.
  • the cleaning device 2 is guided, for example, by a diver along the surface 44.
  • a cavitation stream 60 comprising a plurality of cavitation bubbles therein within a working area 42 is created in a method of cleaning the surface 44 underlying the water surface 88.
  • the surface 44 is cleaned with this cavitation stream 60 and that in this cleaning process emerging wastewater is discharged.
  • the discharged wastewater is filtered and then returned to the water 88 in the filtered state.
  • the cleaning system 70 operates advantageously in a circuit, the water 88 is withdrawn water and filtered water is added again. Since the wastewater is purified, the cleaning of the surface 44 does not create a burden for the water 88.
  • the cleaning device 2 further preferably comprises rollers or ball bearings, not shown, which are fastened to the housing 4 and prevent the cleaning device 2 from adhering to the surface 44 to be cleaned.
  • rollers or ball bearings are attached to the metal sleeve 22, for example. They are furthermore preferably in the inner space 40 surrounded by the housing 4. They allow a movement of the cleaning device 2 along the surface 44 to be cleaned in all directions.
  • Such rollers or ball bearings ensure a minimum working gap 58, so that the cleaning device 2 does not suck on the surface 44 to be cleaned.
  • the sealing lips 54, 56 of the sealing sleeve 32 fully unfold their effect and reliably seal the interior 40 of the housing 4 with respect to the outside space.
  • the cleaning device is preferably provided with a jet drive (water jet), likewise not shown in the figures.
  • a jet drive water jet
  • This jet drive is arranged or fastened, for example, on the upper side of the housing 4 or the dome 36.
  • the jet engine Furthermore, it is preferably pivotable, so that a diver operating the cleaning device 2 can easily control its movement on the surface 44 to be cleaned by pivoting the jet drive.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Cleaning By Liquid Or Steam (AREA)
EP16159567.3A 2016-03-10 2016-03-10 Dispositif et procede de nettoyage d'une surface immergee Withdrawn EP3216531A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP16159567.3A EP3216531A1 (fr) 2016-03-10 2016-03-10 Dispositif et procede de nettoyage d'une surface immergee

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16159567.3A EP3216531A1 (fr) 2016-03-10 2016-03-10 Dispositif et procede de nettoyage d'une surface immergee

Publications (1)

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EP3216531A1 true EP3216531A1 (fr) 2017-09-13

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EP16159567.3A Withdrawn EP3216531A1 (fr) 2016-03-10 2016-03-10 Dispositif et procede de nettoyage d'une surface immergee

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113291429A (zh) * 2021-05-15 2021-08-24 飞马滨(青岛)智能科技有限公司 一种空化吸附装置
WO2023052496A1 (fr) * 2021-09-30 2023-04-06 Hydro Hull Cleaning A/S Dispositif de nettoyage de coque et procédé de nettoyage d'une coque

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0787646A2 (fr) * 1996-01-31 1997-08-06 Ishikawajima-Harima Heavy Industries Co., Ltd. Engin sou-marin et méthode de positionnement de cet engin
EP2743173A1 (fr) * 2012-12-11 2014-06-18 C-leanship Aps Système de nettoyage immergeable

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0787646A2 (fr) * 1996-01-31 1997-08-06 Ishikawajima-Harima Heavy Industries Co., Ltd. Engin sou-marin et méthode de positionnement de cet engin
EP2743173A1 (fr) * 2012-12-11 2014-06-18 C-leanship Aps Système de nettoyage immergeable

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113291429A (zh) * 2021-05-15 2021-08-24 飞马滨(青岛)智能科技有限公司 一种空化吸附装置
WO2023052496A1 (fr) * 2021-09-30 2023-04-06 Hydro Hull Cleaning A/S Dispositif de nettoyage de coque et procédé de nettoyage d'une coque

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