WO1995001905A1 - Meule d'angle et machine de polissage en plongee - Google Patents

Meule d'angle et machine de polissage en plongee Download PDF

Info

Publication number
WO1995001905A1
WO1995001905A1 PCT/DK1993/000383 DK9300383W WO9501905A1 WO 1995001905 A1 WO1995001905 A1 WO 1995001905A1 DK 9300383 W DK9300383 W DK 9300383W WO 9501905 A1 WO9501905 A1 WO 9501905A1
Authority
WO
WIPO (PCT)
Prior art keywords
machine
water
tool
grinding wheels
underwater
Prior art date
Application number
PCT/DK1993/000383
Other languages
English (en)
Inventor
Jørgen Hansen
Original Assignee
Jakobsen, Paw, Rene
Hielscher, Michael
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 Jakobsen, Paw, Rene, Hielscher, Michael filed Critical Jakobsen, Paw, Rene
Priority to AU55611/94A priority Critical patent/AU5561194A/en
Publication of WO1995001905A1 publication Critical patent/WO1995001905A1/fr

Links

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
    • B63B59/08—Cleaning devices for hulls of underwater surfaces while afloat

Definitions

  • This arrangement concerns a lightweight underwater tool weighing 3 kg for use in connection with cleaning and supe olishing of ship propellers.
  • Hydraulic or pneumatic tools require an energy source in the form of a hydraulic pump or an air compressor. These energy sources are heavy and are not always available on board a ship.
  • the machine draws its energy from the site where it is used, namely water from the vessel's own fire-fighting system.
  • the method is 100% free from fire risk and can therefore be used on oil tankers and at oil terminals.
  • polishing machine's outlet water as a type of jet stream results in the polishing wheel acting on the outer surface of the material with a constant force. This means that the machine produces the same quality over the entire surface of the material, unlike traditional systems where the pressure on the material is decided by the diver's muscle power. As muscle power varies from person to person the quality will not be consistent and the vessel will not achieve such a large fuel saving as can be achieved with the technique of the new polishing machines.
  • the machine is currently capable of producing an outer surface with a finish of 0.35 micrometres, whereas the finest possible finish with traditional machines was 0.65 micrometres. (See attached annex no.l : close-up photograph of a bronze propeller.)
  • This fine outer surface of 0.35 micrometres on a ship propeller is estimated by the propeller producer "Stone Manganese Marine Ltd.”, England to give an extra fuel saving of at least 3% per annum. This 3% is based on a fuel consumption of 30 000 - 40 000 litres per day, i.e. a saving of 1 200 litres per day.
  • Annexes 1 - showing the polishing of a bronze propeller to 0.35 micrometers.
  • the pohshing machine (5) consists of a hydraulic motor driven via a fire hose (3) by the vessel's own fire-extmg shing system (1).
  • Water pressure salt water is about 7 Bar.
  • the machine is connected to the vessel's fire-exting shing system by means of fire hose using a standard "C" coupling (1).
  • the water is then led through the inlet (2) and strikes the impeller (3), which begins rotating.
  • the impeller drives an axle (4) which passes through the base cover (5) of the machine.
  • a disc (6) with attachment means for the polishing wheel is screwed on near the end of the axle.
  • the disc for the polishing wheels can be removed and can easily be replaced with a grinding/cutting wheel for working of iron/steel.
  • the hydraulic motor is cast in aluminium according to a suitable design, which makes it possible to handle the machine under water.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)

Abstract

Outil utilisable en plongée pouvant être transporté et mis en ÷uvre à tout endroit. Cette machine ne pèse que 3 kg, à la différence des outils destinés à d'autres processus de polissage, qui peuvent peser de 1 500 à 4 000 kg tout en étant très encombrants et difficiles à man÷uvrer. En outre, elle n'est pas polluante. Elle prend l'eau directement dans la mer/le port où elle est utilisée et elle la restitue. Grâce à son faible poids et au fait qu'elle se sert de la pression de l'eau à titre de source d'énergie, cette nouvelle machine est facile à man÷uvrer, c'est-à-dire qu'elle n'exige aucun effort physique de la part des utilisateurs (plongeurs). Par ailleurs, étant donné qu'elle utilise des meules diamant lubrifiées à l'eau, ladite machine permet d'obtenir une finition de 0,35 micromètres à la surface externe du bronze sur l'hélice. Ceci représente une amélioration de presque 50 % par rapport aux autres procédés connus. Par conséquent, on obtient pour les grands navires des économies supplémentaires de combustible d'au moins 3 % par an.
PCT/DK1993/000383 1993-07-06 1993-11-26 Meule d'angle et machine de polissage en plongee WO1995001905A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU55611/94A AU5561194A (en) 1993-07-06 1993-11-26 Underwater polishing machine and angle grinder

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK9300335 1993-07-06
DK9300335U DK9300335U3 (da) 1993-07-06 1993-07-06 Undervands-poleringsmaskine-vinkelsliber

Publications (1)

Publication Number Publication Date
WO1995001905A1 true WO1995001905A1 (fr) 1995-01-19

Family

ID=8154354

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK1993/000383 WO1995001905A1 (fr) 1993-07-06 1993-11-26 Meule d'angle et machine de polissage en plongee

Country Status (3)

Country Link
AU (1) AU5561194A (fr)
DK (1) DK9300335U3 (fr)
WO (1) WO1995001905A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITPG20090049A1 (it) * 2009-10-02 2011-04-03 Giampiero Sensi Apparato subacqueo portatile per pulire l'elica di una barca che staziona in acqua, rimanendo sopra di essa.
WO2019210382A1 (fr) * 2018-05-03 2019-11-07 Petróleo Brasileiro S.A. - Petrobras Dispositif de nettoyage et de polissage de raccords d'équipements sous-marins comprenant un mécanisme de dispersion de fluide de nettoyage
WO2019210383A1 (fr) * 2018-05-03 2019-11-07 Petróleo Brasileiro S.A. - Petrobras Dispositif de nettoyage et de polissage de connexions d'équipement sous-marin

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1471935A (en) * 1923-01-30 1923-10-23 Arentz Hjalmar Machine for the cleansing of the bottoms and sides of floating ships
FR1523506A (fr) * 1967-03-23 1968-05-03 Outiperret Perfectionnement aux brosseuses pneumatiques à usage sous-marin
SE419738B (sv) * 1976-11-04 1981-08-24 Trelleborg Marin Ab Forfarande vid behandling av under en vattenyta befintliga delar av konstruktioner
DK167487B1 (da) * 1984-10-06 1993-11-08 Gerrit Broersz Apparat til afrensning og fjernelse af begroning paa konstruktioner

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1471935A (en) * 1923-01-30 1923-10-23 Arentz Hjalmar Machine for the cleansing of the bottoms and sides of floating ships
FR1523506A (fr) * 1967-03-23 1968-05-03 Outiperret Perfectionnement aux brosseuses pneumatiques à usage sous-marin
SE419738B (sv) * 1976-11-04 1981-08-24 Trelleborg Marin Ab Forfarande vid behandling av under en vattenyta befintliga delar av konstruktioner
DK167487B1 (da) * 1984-10-06 1993-11-08 Gerrit Broersz Apparat til afrensning og fjernelse af begroning paa konstruktioner

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITPG20090049A1 (it) * 2009-10-02 2011-04-03 Giampiero Sensi Apparato subacqueo portatile per pulire l'elica di una barca che staziona in acqua, rimanendo sopra di essa.
WO2019210382A1 (fr) * 2018-05-03 2019-11-07 Petróleo Brasileiro S.A. - Petrobras Dispositif de nettoyage et de polissage de raccords d'équipements sous-marins comprenant un mécanisme de dispersion de fluide de nettoyage
WO2019210383A1 (fr) * 2018-05-03 2019-11-07 Petróleo Brasileiro S.A. - Petrobras Dispositif de nettoyage et de polissage de connexions d'équipement sous-marin

Also Published As

Publication number Publication date
AU5561194A (en) 1995-02-06
DK9300335U3 (da) 1993-10-08

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