• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A maritime vessel having a bow, a stern and a hull. Within the hull a cargo compartment being able to hold a fluid and having a vertically extending column is provided. The cargo compartment contains a rotatable buoyant inner cargo tank extending around said column. The lower end of the vertically extending column is attached to the hull of said vessel.
    公开号:DK201370394A1
    申请号:DK201370394
    申请日:2013-07-11
    公开日:2015-01-26
    发明作者:Niels Peter Elmbo
    申请人:Maersk Supply Service As；
    IPC主号:
    专利说明:

    Ά marine vessel.
    Field of the invention
    The invention relates to a maritime vessel having a bow, a stern, a hull and within the hull a cargo compartment being able to hold a fluid and having a vertically extending column, said cargo compartment containing a rotatable buoyant inner cargo tank extending around said column .
    The laying of underwater cable is common practice today when every year, thousands of km of cable is being submerged on our seabed. Cables of varying purpose are laid, for example fiber cable or power line. The cables are usually very long and require special dedicated vessels for transportation and cable lay.
    Traditionally, the fabricated cable may be delivered to a port where after it is spun up on a cable carousel positioned on the deck of a dedicated cable-lay vessel. This procedure can take several weeks but is normally necessary while a cable carousel loaded with cable can weigh as much as 1500000 kg being too heavy for most cranes.
    The loading and unloading of cable is normally conducted while the cable carousel is rotating and the cable is either fed on or off the carousel. When unloaded into the ocean, the cable is fed from cable carousel to a cable-lay mechanism and placed on the ocean seabed in a trench made by a trencher operating on the bottom. The commercial technique used during cable lay is to have a mechanical cable carousel placed on the deck of the cable lay vessel.
    Background of invention
    Prior art
    The prior art describes various embodiments of cable-lay vessels comprising deck-mounted mechanical cable carousels where the cable carousels are in either vertical or horizontal position. EP0919458 discloses such a cable-lay vessel comprising horizontally positioned mechanical cable carousels. The invention discloses a method of loading a cable carousel onboard a cable-lay vessel in the unconventional way of floating the cable carousel onboard. EP2085308 discloses an apparatus with a floating tank for taking up cable, and a drive arrangement. The inner tank is designed as a floating body, with a floor and sides. The inner tank is placed inside an outer tank, so that an interstice is created between the inner tank and the outer tank for filling fluid. A minimum of one support for the inner tank inside the outer tank permits rotation of the inner tank relative to the outer tank. The drive arrangement will turn the inner tank.
    There are several problems associated with the current prior art. First, the problem with prior art cable carousels is the complexity of the system including the mechanical structure of the carousel and the rotating support structures located underneath it. Further, the cable carousel occupies valuable space on deck and provides the vessel with a high center of gravity. EP2085308 is not found suitable for integration in a cable-lay vessel while it does not provide sufficient freedom in the shape of the outer cargo compartment and further includes undesirable supportive structures to hold up and control the movements of the inner cable container.
    Summary of invention
    It is an object of the present invention to solve the problems related to prior art. This is achieved by the lower end of a vertically extending column being attached to the hull of said vessel.
    This construction enables load to be placed on the vertically extending column while providing controlled vertical movement of the inner tank.
    In one embodiment of the invention, the lower end of the vertically extending column is attached to the hull of said vessel. In addition, it is achieved that the vertically extending column is able to hold a load while the inner cable container is able to move vertically.
    In one embodiment of the invention, the upper end of the vertically extending column is attached to the hull of said vessel. Furthermore, it is achieved that the inner cable container has limited freedom of vertical movement and further achieved that said vertically extending column can withstand horizontal forces exerted by the inner cable container due e.g. to ocean swell.
    In one embodiment of the invention, the inner cargo tank is pivotally fixed to the vertically extending column by means of friction reducing means such as a limited number of circumferential bearings extending along the periphery of the column. Furthermore, it is achieved that the friction between the inner cable container and the cargo compartment is minimized while the inner cable container does not pivot substantially relative to the vertically extending column.
    In one embodiment of the invention, the inner cable container is pivotally fixed to the vertically extending column by means of a limited number of circumferential ball bearings extending along the periphery of the column. Moreover, it is achieved that the friction between the inner cable container and the cargo compartment is minimized while the inner cable container does not pivot relative to the vertically extending column.
    In one embodiment of the invention, the inner cargo tank is pivotally fixed to the vertically extending column by means of a limited number of circumferential rolling bearings extending along the periphery of the column.
    Moreover, it is achieved that the friction between the inner cable container and the cargo compartment is minimized while the inner cable container does not pivot relative to the vertically extending column.
    In one embodiment of the invention, there is a pressure bearing between said inner cable container and the deck. The upward vertical movement of the inner cable container is arrested by means of said pressure bearing. It is thereby achieved, the upward buoyancy force exerted on the inner cable container will react against said pressure bearing. It is thereby achieved that relative to the vessel, the inner cable container is unable to accumulate and release kinetic energy created by upward buoyancy forces. It is thereby achieved, smooth rotation of the inner cable container e.g. during rolling and pitching in sea waves.
    In one embodiment of the invention, there is a fluid regulating system. The fluid regulating system performs regulation of the amount of fluid contained in the interstice between the cargo compartment and the inner cable container. It is thereby achieved, a constant upward buoyancy force which reacts against said pressure bearing.
    In one embodiment of the invention, there is a deck above the cargo compartment. Moreover, it is achieved that the vessel can carry equipment or cargo placed on the deck above said cargo compartment.
    In one embodiment of the invention, the cargo compartment comprises a fluid and that fluid is being a gel. Moreover, it is achieved that the movement of the fluid due to e.g. sea swell is reduced for the benefit of stability of the maritime vessel and the function of the cable carousel.
    In one embodiment of the invention, the cargo compartment comprises a fluid and that fluid has a specific density above 1000 kg / m3. Moreover, it is achieved that the movement of the fluid due to e.g. sea swell is reduced for the benefit of stability of the maritime vessel and the function of the cable carousel.
    In one embodiment of the invention, the cargo compartment comprises a fluid and that fluid contains salt (NaCl) and that the specific density is above 1020 kg / m3. Moreover, it is achieved that the movement of the fluid due to e.g. sea swell is reduced for the benefit of stability of the maritime vessel and the function of the cable carousel.
    Brief description of drawings. FIGURE 1 illustrates the cable-lay vessel with internal cable carousels. FIGURE 2 illustrates a cross section of the cable carousel.
    Detailed description of the embodiments
    One embodiment of the invention is shown in figure 1, showing a maritime vessel (1) adapted for lying cable on the seabed. The vessel comprises bow (2), a stern (3), a deck (4) a hull (5) and a cable dispenser (6). The hull (5) comprises internal structures of the vessel. On the deck (4) is placed a trencher (7) which is used for creating a trench along the cable-lay route on the seabed. The cable (10) is fed from the vessel (1) and positioned in the trench by the trencher (7).
    One embodiment of the invention is shown in Figure 2, showing a cross section of the cable carousel (11) situated below the deck (4). The cable carousel (11) comprises a cargo compartment (12) where said cargo compartment (12) could have a circular shape or have multiple corners. The cargo compartment (12) is preferably cylindrical but the invention enables the choice of other shapes such as e.g. square, hexagonal or octagonal or any other suitable shape.
    By positioning cargo compartments, it is achieved that space is saved on deck. Further, during the construction of the cable carousel (11) it is achieved that the above deck may hold significant loads.
    The cable-lay vessel (1) has one inner cable container (13) fitted into each of the cargo compartments (12).
    The inner cable container (13) is constructed to be watertight and able to float so that when the cargo compartment (12) is partially filled with fluid (20), said inner cable container becomes buoyant. Furthermore, it is achieved that the inner cable container can be rotated without the occurrence of substantial mechanical friction between the cargo compartment (12) and the inner cable container (13).
    In one embodiment of the invention, the fluid held in the cargo compartment (12) has a viscosity being higher than water or brine, e.g. and gel. Moreover, it is achieved that the movement of the fluid due to e.g. sea swell is reduced for the benefit of stability of the maritime vessel (1) and the function of the cable carousel (11).
    For the purpose of rotating the inner cable container (13) during loading and unloading of a cable package (19) the cable carousel (11) comprises at least one motor (12) with associated drive arrangement comprising e.g. and gear (23). The function of the described arrangement for rotating the inner cable container (13) is independent of the shape of the cargo compartment (12) while the motor (12) may be positioned at those instances where the cargo compartment (12) is tangent to the circular inner cable container (13).
    The cargo compartment (12) has a vertically extending column (14) which is stationary by attachment to the hull (5) at the upper and lower ends of said column. The vertically extending column (14) may be attached to the hull (5) such that said column has its main shear force support at the upper attachment by means of a column support structure (17) at the upper attachment of said vertically extending column. When loaded with a cable package (19), the inner cable container (13) will obtain a substantial weight. The prevention of pivotal movement of the inner cable container due e.g. to ocean swell, may be controlled by the stationary vertically extending column (14) in the cargo compartment (12). By the described construction it is achieved that said column may withstand the significant horizontal forces applied to the inner cable container (13). It is further achieved a lower center of gravity of the cable-lay vessel (1).
    The inner cable container (13) may be pivotally fixed to the vertically extending column (14) by means of a limited number of circumferential bearings (18) extending along the periphery of said column.
    The upward vertical movement of the inner cable container (13) is arrested by means of a pressure bearing (24) which is subjected to a constant upward force exerted by the inner cable container (12). The inner cable container (13) is thereby unable to accumulate and release kinetic energy created by upward buoyancy forces exerted on the inner cable container (13). This construction entails smooth rotation of the inner cable container (13) e.g. during rolling and pitching in sea-waves and makes the cable carousel (11) suitable for cable-lay operations.
    In one embodiment of the invention, regulation is made of the amount of fluid contained in the interface between the cargo compartment (12) and the inner cable container (13). It is thereby achieved, a constant upward buoyancy force which reacts against said pressure bearing (24).
    Due to the construction of the vertically extending column (14), said column is also part of the load bearing construction of the above ship deck (4). The described construction is beneficial while marine vessels of this type are often equipped with heavy duty equipment or cargo placed on deck.
    When the cable package (19) is loaded to the cable-lay vessel (1), the cable is being distributed in the inner cable container (13) by means of cable distribution armature (21) while simultaneously rotating the inner cable container (13). This procedure ensures that the cable is evenly distributed in a circular pattern circumventing the vertically extending column (14).
    When the cable-lay vessel (1) is in the starting position of the cable-lay route, a so-called trencher (7) may be submerged into the ocean, lake or like e.g. from said cable-lay vessel. The trencher (7) may create a trench along the cable-lay route and the cable is laid in the trench. The procedure of feeding the cable into the trench may be performed by conducting the following operations simultaneously: unloading the cable from the inner cable container (13) while rotating said inner container in the direction reverse that of the loading direction; feeding the cable into the cable distribution armature (21); further feeding the cable into the ocean; further feeding the cable to the trencher (7); said trencher feeding the cable into the trench.
    In one embodiment of the invention the marine vessel (1) is a container vessel which has been retrofitted and adapted for lying of cable inter alia by installing at least two cable carousels (11) underneath the deck of the container vessel.
    权利要求:
    Claims (12)
    [1] 1. A maritime vessel having a bow, a stern, a hull and within the hull a cargo compartment being able to hold a fluid and having a vertically extending column, said cargo compartment containing a rotatable buoyant inner cargo tank extending around said column characterized in that the lower end of the vertically extending column is attached to the hull of said vessel.
    [2] 2. A maritime vessel according to claim 1 characterized in that the upper end of the vertically extending column is attached to the hull of said vessel
    [3] 3. A maritime vessel according to claim 1 and or 2 characterized in that the inner cargo tank is pivotally fixated to the vertically extending column by means of a limited number of circumferential bearings extending along the periphery of the column .
    [4] 4. A maritime vessel according to any of the claims 1 -3 characterized in that the inner cargo tank is pivotally fixated to the vertically extending column by means of a limited number of circumferential ball bearings extending along the periphery of the column.
    [5] 5. A maritime vessel according to any of the claims 1 -3 characterized in that the inner cargo tank is pivotally fixated to the vertically extending column by means of a limited number of circumferential rolling bearing extending along the periphery of the column .
    [6] 6. A maritime vessel according to any of the claims 1 or 2 characterized in that the vertically extending column is attached to the hull of said vessel such that said column has its shear force support at the upper attachment.
    [7] 7. A maritime vessel according to any of the claims 1 or 2 characterized in that there is a pressure bearing between said inner cable container and the deck.
    [8] 8. A maritime vessel according to any of the claims 1 or 2 characterized in that there is a fluid regulating system.
    [9] 9. A maritime vessel according to any of preceding claims 1-3 characterized in that there is a deck above the cargo compartment.
    [10] 10. A maritime vessel according to any of preceding claims 1-4 where the cargo compartment comprises a fluid characterized in that the fluid is a gel.
    [11] 11. A marine vessel according to any of preceding claims 1-5 where the cargo compartment comprises a fluid characterized in that the fluid has a specific density above 1000 kg/m3.
    [12] 12. A marine vessel according to any of preceding claims 1-5 where the cargo compartment comprises a fluid characterized in that the fluid contains salt (NaCl) and that the specific density is above 1020 kg/m3.
    类似技术:
    公开号 | 公开日 | 专利标题
    KR101412094B1|2014-06-26|Ship and method for conveying and setting up offshore structures
    JP5192396B2|2013-05-08|Deep-sea ship
    US10532796B2|2020-01-14|Transfer structure, a transfer system and a method for transferring LNG and/or electric power
    US9505466B2|2016-11-29|Method of mooring a ship and arrangement to accomplish the method
    US9403580B2|2016-08-02|Vessel
    WO2019000757A1|2019-01-03|Method for adding water in vessel lightering
    KR20100136766A|2010-12-29|Self propelled offshore cargo handling system
    US3939790A|1976-02-24|Transport ship construction and method of loading floating cargo into a floatable cargo space of a ship
    CN103228531A|2013-07-31|A cargo carrying marine vessel and a method of loading and offloading such
    CN207292328U|2018-05-01|A kind of cable laying ship
    DK178187B1|2015-07-27|A marine vessel
    US20160016642A1|2016-01-21|Integrated Heavy Lift And Logistics Vessel
    RU2377155C1|2009-12-27|Marine cargo ship for lifting, loading-unloading and transportation of sunk objects into receiving centre
    US8181589B2|2012-05-22|Gravity anchor
    KR20130003914A|2013-01-09|Method for mounting azimuth thruster for ship on land
    KR101938913B1|2019-01-16|Bunkerring system for ship
    KR20170000778U|2017-03-02|Mooring Device And System For Bunkering Vessel
    KR101444150B1|2014-09-26|A vessel with retractable thruster
    KR20150040612A|2015-04-15|Apparatus for transfortation of offshore structure
    EP2844541B1|2016-10-05|Ship with vertical draught system
    CN110371270B|2021-01-29|Method for safely floating and refuting product ship in water
    JP2020163876A|2020-10-08|Ship
    KR20140125974A|2014-10-30|Ship approaching equipment
    CN105431361A|2016-03-23|Tank
    KR101600773B1|2016-03-08|Ship which load cargo and method of loading cargo
    同族专利:
    公开号 | 公开日
    DK178187B1|2015-07-27|
    WO2015004253A1|2015-01-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US3093333A|1963-06-11|Stowage apparatus for cable instrumentality housings |
    EP0919458A1|1997-11-21|1999-06-02|CABLE & WIRELESS PLC|Loading and laying underwater cable|
    WO2001087704A1|2000-05-18|2001-11-22|Clipper Elite Carriers A/S|A cable tank|
    EP2085308A2|2008-01-25|2009-08-05|Ingeniørfirmaet G M Jacobsen AS|Apparatus with a floating container for a cabel|
    US20120186506A1|2011-01-25|2012-07-26|Ottar Antonsen|System for handling conventional and synthetic moorings lines, cables and the like aboard a vessel|
    US4647253A|1985-10-16|1987-03-03|Jacobson Brothers, Inc.|Cable turntable assembly|
    GB0814604D0|2008-08-11|2008-09-17|Acergy Uk Ltd|Methods and apparatus for transporting chain|
    GB0822611D0|2008-12-11|2009-01-21|Acergy Norway As|Carousel for flexible product|
    法律状态:
    2017-02-20| PBP| Patent lapsed|Effective date: 20170131 |
    优先权:
    申请号 | 申请日 | 专利标题
    DK201370394A|DK178187B1|2013-07-11|2013-07-11|A marine vessel|
    DK201370394|2013-07-11|DK201370394A| DK178187B1|2013-07-11|2013-07-11|A marine vessel|
    PCT/EP2014/064848| WO2015004253A1|2013-07-11|2014-07-10|A marine vessel|
    [返回顶部]