WO2002040875A2 - Protection of underwater elongate members - Google Patents
Protection of underwater elongate members Download PDFInfo
- Publication number
- WO2002040875A2 WO2002040875A2 PCT/GB2001/005024 GB0105024W WO0240875A2 WO 2002040875 A2 WO2002040875 A2 WO 2002040875A2 GB 0105024 W GB0105024 W GB 0105024W WO 0240875 A2 WO0240875 A2 WO 0240875A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cladding
- underwater
- underwater cladding
- flaps
- elongate member
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15D—FLUID DYNAMICS, i.e. METHODS OR MEANS FOR INFLUENCING THE FLOW OF GASES OR LIQUIDS
- F15D1/00—Influencing flow of fluids
- F15D1/10—Influencing flow of fluids around bodies of solid material
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B5/00—Making ropes or cables from special materials or of particular form
- D07B5/005—Making ropes or cables from special materials or of particular form characterised by their outer shape or surface properties
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/12—Laying or reclaiming pipes on or under water
- F16L1/123—Devices for the protection of pipes under water
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
- B63B1/32—Other means for varying the inherent hydrodynamic characteristics of hulls
- B63B1/34—Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction
- B63B1/36—Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction using mechanical means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
- B63B21/50—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers
- B63B21/502—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers by means of tension legs
- B63B2021/504—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers by means of tension legs comprising suppressors for vortex induced vibrations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
- B63B21/56—Towing or pushing equipment
- B63B21/66—Equipment specially adapted for towing underwater objects or vessels, e.g. fairings for tow-cables
- B63B21/663—Fairings
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T70/00—Maritime or waterways transport
- Y02T70/10—Measures concerning design or construction of watercraft hulls
Definitions
- the present invention relates to the protection of underwater pipes
- vortices can be shed alternately from each side.
- the member can be caused to vibrate with a large oscillation amplitude.
- the casing may comprise a flexible material, e.g. polyurethane.
- a flexible material e.g. polyurethane.
- the casing comprises a generally planar mat which is wrapped around an elongate
- elongate member e.g. one or more circumferential securing bands.
- the flexible members may be moulded onto the casing.
- members may also be neutrally buoyant and may comprise polyester or
- the length of the flexible members in their projecting direction is the length of the flexible members in their projecting direction
- the diameter of the elongate member to be clad is preferably at least 150mm.
- the flexible members are elongate.
- the flexible members comprise strands or fingers.
- the strands or fingers preferably extend generally radially with respect to the
- the strands or fingers are preferably circular in cross-section, e.g.
- the rows may be parallel to the longitudinal axis
- the flaps may be elongate in their proj ecting direction.
- the flaps may be elongate in their proj ecting direction.
- flaps are arranged side-by-side. They may be arranged in a plurality of rows which
- the width of the flaps is preferably
- cladding may extend along substantially the whole length of a cladding
- the present invention also includes an elongate member, e.g. a pipe,
- Fig. 1 is a perspective view of a first embodiment of pipe cladding in
- Fig. 2 is a cross-sectional end elevation of the cladding of Fig. 1
- Fig. 3 is a perspective view of a second embodiment of cladding in
- Fig. 4 is a perspective view of a third embodiment of pipe cladding
- pipe 10 to form a tubular cladding and is held in position by means of conventional
- a plurality of flexible strands or fingers 16 extend radially from the
- the strands 16 are flexible in that they can be
- the cladding is omnidirectional since the
- FIG. 2 A variation of the embodiment of Fig. 1 is shown in Fig. 2, in which
- the flaps are formed from the same material as the strands 16 of
- flaps 24 rather than strands or fingers 16 provides a much greater surface area
- FIG. 4 is a variation of the embodiment of Fig. 3.
- Fig. 4 instead of having a plurality of
- radial length of the flaps is the same as that for the first and second embodiments.
- adjacent flaps 28 are spaced from one another by a distance which is the
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Earth Drilling (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0308660A GB2386662B (en) | 2000-11-15 | 2001-11-15 | Protection of underwater elongate members |
AU2002223806A AU2002223806A1 (en) | 2000-11-15 | 2001-11-15 | Protection of underwater elongate members |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB0027858.0A GB0027858D0 (en) | 2000-11-15 | 2000-11-15 | Protection of underwater elongate members |
GB0027858.0 | 2000-11-15 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2002040875A2 true WO2002040875A2 (en) | 2002-05-23 |
WO2002040875A3 WO2002040875A3 (en) | 2002-08-01 |
Family
ID=9903213
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB2001/005024 WO2002040875A2 (en) | 2000-11-15 | 2001-11-15 | Protection of underwater elongate members |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU2002223806A1 (en) |
GB (2) | GB0027858D0 (en) |
WO (1) | WO2002040875A2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1556554A2 (en) * | 2002-10-30 | 2005-07-27 | SPX Corporation | Retractable radome strake and method |
WO2022053124A1 (en) * | 2020-09-08 | 2022-03-17 | Rwe Renewables Gmbh | Submarine cable |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3296357A (en) * | 1963-10-22 | 1967-01-03 | Greber Henry | Device to prevent vibration of aerial conductors |
US3440991A (en) * | 1965-01-29 | 1969-04-29 | Us Navy | Hair faired cable |
US3352118A (en) * | 1965-08-11 | 1967-11-14 | Exxon Production Research Co | Frictional drag reducer for immersed bodies |
US3368514A (en) * | 1965-10-22 | 1968-02-13 | Navy Usa | Symmetrical self-alining cable fairing |
US3472196A (en) * | 1968-01-17 | 1969-10-14 | Us Navy | Fairings for underwater cables,towlines and structural members |
US3895595A (en) * | 1974-02-11 | 1975-07-22 | Us Navy | Paired cable drag reduction with non-newtonian fluids |
US3975980A (en) * | 1974-08-21 | 1976-08-24 | Wall Industries, Inc. | Method and apparatus for manufacturing faired article |
US4756270A (en) * | 1980-08-05 | 1988-07-12 | Berk-Tek, Inc. | Hair faired cables and method of making same |
DE3701069A1 (en) * | 1986-02-06 | 1987-08-13 | Josef Witzel | Pincers |
DE3710691A1 (en) * | 1987-03-31 | 1988-10-13 | Josef Kecur | Surface coating for aerodynamically active parts |
ES2015120A6 (en) * | 1988-12-20 | 1990-08-01 | Doria Iriarte Jose Javier | Aerodynamic casing which is adaptable shape depending on the action of the flow released. |
US5275120A (en) * | 1992-09-23 | 1994-01-04 | The United States Of America As Represented By The Secretary Of The Navy | Strum-suppressant cable for towed arrays |
GB9622448D0 (en) * | 1996-10-29 | 1997-01-08 | Nicc Ltd | Improvements relating to pile wrappers |
GB2335248B (en) * | 1998-03-07 | 2002-12-31 | Crp Group Ltd | Protection of underwater elongate members |
-
2000
- 2000-11-15 GB GBGB0027858.0A patent/GB0027858D0/en not_active Ceased
-
2001
- 2001-11-15 WO PCT/GB2001/005024 patent/WO2002040875A2/en not_active Application Discontinuation
- 2001-11-15 AU AU2002223806A patent/AU2002223806A1/en not_active Abandoned
- 2001-11-15 GB GB0308660A patent/GB2386662B/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
None |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1556554A2 (en) * | 2002-10-30 | 2005-07-27 | SPX Corporation | Retractable radome strake and method |
EP1556554A4 (en) * | 2002-10-30 | 2007-08-29 | Spx Corp | Retractable radome strake and method |
WO2022053124A1 (en) * | 2020-09-08 | 2022-03-17 | Rwe Renewables Gmbh | Submarine cable |
Also Published As
Publication number | Publication date |
---|---|
WO2002040875A3 (en) | 2002-08-01 |
GB0308660D0 (en) | 2003-05-21 |
GB2386662B (en) | 2004-07-28 |
GB2386662A (en) | 2003-09-24 |
AU2002223806A1 (en) | 2002-05-27 |
GB0027858D0 (en) | 2000-12-27 |
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