EP0018265A1 - Machine, telle que pompe, dont au moins certaines parties mobiles sont en contact avec l'eau de mer - Google Patents

Machine, telle que pompe, dont au moins certaines parties mobiles sont en contact avec l'eau de mer Download PDF

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Publication number
EP0018265A1
EP0018265A1 EP80400461A EP80400461A EP0018265A1 EP 0018265 A1 EP0018265 A1 EP 0018265A1 EP 80400461 A EP80400461 A EP 80400461A EP 80400461 A EP80400461 A EP 80400461A EP 0018265 A1 EP0018265 A1 EP 0018265A1
Authority
EP
European Patent Office
Prior art keywords
pump
parts
coating
machine
contact
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Withdrawn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
EP80400461A
Other languages
German (de)
English (en)
French (fr)
Inventor
Jean-François Bonnin
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.)
Bronzavia SA
Original Assignee
Bronzavia SA
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 Bronzavia SA filed Critical Bronzavia SA
Publication of EP0018265A1 publication Critical patent/EP0018265A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/122—Details or component parts, e.g. valves, sealings or lubrication means
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
    • C23C4/10—Oxides, borides, carbides, nitrides or silicides; Mixtures thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F04B15/04—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being hot or corrosive
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2201/00—Metals
    • F05C2201/04—Heavy metals
    • F05C2201/0433—Iron group; Ferrous alloys, e.g. steel
    • F05C2201/0466—Nickel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2201/00—Metals
    • F05C2201/04—Heavy metals
    • F05C2201/0469—Other heavy metals
    • F05C2201/0475—Copper or alloys thereof
    • F05C2201/0478—Bronze (Cu/Sn alloy)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2253/00—Other material characteristics; Treatment of material
    • F05C2253/12—Coating

Definitions

  • the present invention relates to equipment intended in particular to operate in an underwater environment and of which at least certain moving parts are in contact with sea water. More particularly, but not exclusively, the invention relates to a hydraulic pump, the pumped liquid is sea water. Such pumps are currently used in particular for oil drilling platforms and other petroleum installations of this kind.
  • the object of the present invention is to propose a machine intended for working in an underwater environment and of which at least certain parts in relative movement are in contact with sea water, this machine having a life - significantly longer than that stainless steel machines used so far.
  • a machine such as a pump or the like, of which at least certain parts in relative movement are in contact with sea water
  • the body of the machine is made of a metal chosen from titanium and nickel or the alloys of these metals and in that the contact surfaces of the parts of each pair of parts in relative motion are covered with a coating with a low coefficient of friction, not forming with said metal or alloy no galvanic coupling in the presence of sea water,
  • said coating is made from tungsten carbide applied to moving parts by spraying a plasma of this material.
  • FIG. A pump. high pressure barrel to illustrate a particular application of the invention. However, it is understood that this applies to any other machine or equipment having to work in a marine environment and of which at least certain parts in relative movement are in permanent contact with sea water.
  • the pump shown in FIG. is from classic mechanical design and its very construction is not part of the invention and therefore will not be described in detail here.
  • this pump comprises a body 1 which is tightly secured by a flange 2 with a drive motor (not shown) coupled to a rotary member 3 with an oblique end face acting in turn so conventional, on a swash plate 4.
  • the compartment 5 in which these parts are housed is sealed against sea water and preferably filled with oil, so that the parts themselves can be made of materials usually used for this effect.
  • this cavity 6 comprises a number of cylinders 7 in which as many pistons 8 are movable, driven by the swash plate 4
  • the seal between the cavity 6 and the compartment 5 is ensured at each pair of piston-cylinder by an annular seal 9 arranged in a groove of the piston.
  • all of the parts of the pump are made of a metal chosen from titanium, nickel or alloys of these metals.
  • this metal is used for the entire body 1 of the pump, all the parts housed in the cavity 6 and subjected to sea water being also produced.
  • a metal titanium alloy no TA6V, Inconel 625 or Hastelloy C276 can be used as the metal.
  • each cylinder 7 is delimited by a sheath 10 which is housed in a cylindrical chamber 11 of a mounting block 12 placed in the cavity 6.
  • the sheath 10 and the piston 8 are made of a material of the type defined above. above and therefore have a coefficient of friction with respect to each other such that they cannot, without special measures, move relative to the normal rate of a pump of the kind described.
  • the surfaces in contact with the parts in question namely the wall 13 of the bore of the sheath 10 and the external surface 14 of the piston 8 are covered with respective coatings 15 and 16 which have coefficients of low friction and which do not form with the metal coated parts any galvanic coupling.
  • a preferred coating for the scabbard is a mixture of tungsten carbide and chromium oxide which is preferably applied by vacuum spraying using a plasma gun to obtain at the surface interface 13 and the coating 15, sufficient crystal cohesion. 11 it should be noted that the chromium oxide is mixed with the tungsten carbide to improve the coefficient of friction.
  • the outer coating 6 of the piston 8 is also applied under vacuum using a plasma gun and it preferably consists of tungsten carbide.
  • the thickness of the coatings is chosen from a range from 2 to 3 mm.
  • a high pressure seawater pump produced by the Applicant was able to operate for 300 hours during a test without it being possible to detect traces, no pitting or "cracks" in the contact surfaces. parts in relative motion.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Coating By Spraying Or Casting (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP80400461A 1979-04-19 1980-04-08 Machine, telle que pompe, dont au moins certaines parties mobiles sont en contact avec l'eau de mer Withdrawn EP0018265A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7909919A FR2454543A1 (fr) 1979-04-19 1979-04-19 Machine, telle que pompe, dont au moins certaines parties mobiles sont en contact avec l'eau de mer
FR7909019 1979-04-19

Publications (1)

Publication Number Publication Date
EP0018265A1 true EP0018265A1 (fr) 1980-10-29

Family

ID=9224494

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80400461A Withdrawn EP0018265A1 (fr) 1979-04-19 1980-04-08 Machine, telle que pompe, dont au moins certaines parties mobiles sont en contact avec l'eau de mer

Country Status (2)

Country Link
EP (1) EP0018265A1 (enExample)
FR (1) FR2454543A1 (enExample)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2635830A1 (fr) * 1988-08-23 1990-03-02 Commissariat Energie Atomique Machine volumetrique de type pompe ou compresseur depourvue de lubrification
US5645896A (en) * 1995-05-30 1997-07-08 Kudu Industries Inc. Method of applying a filled in metal carbide hard facing to the rotor of a progressing cavity pump
EP0844389A1 (en) * 1996-11-25 1998-05-27 Sanden Corporation Piston mechanism of fluid displacement apparatus
EP1063428A3 (en) * 1999-06-21 2001-10-31 Hitachi, Ltd. High pressure fuel pump
WO2017177936A1 (zh) * 2016-04-13 2017-10-19 武汉钜威天数字化机械制造有限公司 轴向柱塞泵

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3086703B1 (fr) * 2018-09-27 2020-11-06 Agence Nat Pour La Gestion Des Dechets Radioactifs Moteur hydraulique a eau

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2709339A (en) * 1953-07-06 1955-05-31 Pacific Airmotive Corp Two-stage pumping system with automatic demand responsive control
DE1033028B (de) * 1956-08-09 1958-06-26 Georg Wiggermann Hydrostatische Kolbenmaschine
US2964420A (en) * 1955-06-14 1960-12-13 Union Carbide Corp Refractory coated body
CH361478A (de) * 1957-10-17 1962-04-15 Dow Chemical Co Aus Kolben und Kolbenantriebsteil aufgebauter Pumpenteil
US3209701A (en) * 1962-10-05 1965-10-05 Sundstrand Corp Pump
US3212448A (en) * 1963-04-22 1965-10-19 Clevite Corp Fluid apparatus
FR1449397A (fr) * 1965-10-07 1966-08-12 Berkenhoff & Co Procédé de fabrication de toiles métalliques à résistance à l'usure améliorée
US3507584A (en) * 1968-03-27 1970-04-21 Us Navy Axial piston pump for nonlubricating fluids

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2709339A (en) * 1953-07-06 1955-05-31 Pacific Airmotive Corp Two-stage pumping system with automatic demand responsive control
US2964420A (en) * 1955-06-14 1960-12-13 Union Carbide Corp Refractory coated body
DE1033028B (de) * 1956-08-09 1958-06-26 Georg Wiggermann Hydrostatische Kolbenmaschine
CH361478A (de) * 1957-10-17 1962-04-15 Dow Chemical Co Aus Kolben und Kolbenantriebsteil aufgebauter Pumpenteil
US3209701A (en) * 1962-10-05 1965-10-05 Sundstrand Corp Pump
US3212448A (en) * 1963-04-22 1965-10-19 Clevite Corp Fluid apparatus
FR1449397A (fr) * 1965-10-07 1966-08-12 Berkenhoff & Co Procédé de fabrication de toiles métalliques à résistance à l'usure améliorée
US3507584A (en) * 1968-03-27 1970-04-21 Us Navy Axial piston pump for nonlubricating fluids

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2635830A1 (fr) * 1988-08-23 1990-03-02 Commissariat Energie Atomique Machine volumetrique de type pompe ou compresseur depourvue de lubrification
US5645896A (en) * 1995-05-30 1997-07-08 Kudu Industries Inc. Method of applying a filled in metal carbide hard facing to the rotor of a progressing cavity pump
EP0844389A1 (en) * 1996-11-25 1998-05-27 Sanden Corporation Piston mechanism of fluid displacement apparatus
US5934170A (en) * 1996-11-25 1999-08-10 Sanden Corporation Piston mechanism of fluid displacement apparatus
EP1063428A3 (en) * 1999-06-21 2001-10-31 Hitachi, Ltd. High pressure fuel pump
US6471491B1 (en) 1999-06-21 2002-10-29 Hitachi, Ltd. High pressure fuel pump
US6488478B2 (en) 1999-06-21 2002-12-03 Hitachi, Ltd. High pressure fuel pump
WO2017177936A1 (zh) * 2016-04-13 2017-10-19 武汉钜威天数字化机械制造有限公司 轴向柱塞泵

Also Published As

Publication number Publication date
FR2454543A1 (fr) 1980-11-14
FR2454543B1 (enExample) 1982-05-21

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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STAA Information on the status of an ep patent application or granted ep patent

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Withdrawal date: 19810424

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Inventor name: BONNIN, JEAN-FRANCOIS