A deep sea cable laying vessel

Abstract

The application relates to the technical field of cable laying, and particularly provides a deep-sea cable laying ship, which comprises a ship body, a main work deck arranged on the ship body, a cable storage device arranged on the main work deck and comprising a first cable turntable and a second cable turntable for storing cables respectively, a first work line arranged along the length direction of the ship body and used for guiding the cables of the first cable turntable or the second cable turntable to carry out deep-water cable laying work, a second work line arranged along the length direction of the ship body and used for guiding the cables of the first cable turntable or the second cable turntable to carry out shallow-water cable laying work, a third work line arranged along the width direction of the ship body and arranged side by side with the second work line and used for guiding the cables of the first cable turntable or the second cable turntable to carry out shallow-water cable laying work, and a cable jointing room arranged in the first work line and used for carrying out jointing work in the deep-water cable laying process. The deep-sea cable laying ship can meet the cable laying work requirements of different water depths and improves the adaptability of the cable laying ship.

Description

Technical Field

[0001] This invention relates to the field of cable-laying technology, and specifically to a deep-sea cable-laying vessel. Background Technology

[0002] Deep-sea cable-laying vessels are engineering vessels specifically designed for laying submarine cables and related operations in deep-sea environments. Cable laying is their core function, but currently most cable-laying vessels can only operate within specific water depths. For example, some vessels are limited to simultaneous laying and burying operations in water depths of 0-200 meters, while others are only capable of laying cables or optical fibers in waters deeper than 3000 meters. This is because existing cable-laying vessels have relatively limited functionality, often requiring assistance from other specialized vessels during construction, thus limiting their independent operational capabilities. Furthermore, unreasonable vessel layout design prevents the full utilization of operational capacity and efficiency, making it difficult to flexibly address the complex operational needs of different sea areas. Summary of the Invention

[0003] In view of this, the present invention provides a deep-sea cable-laying vessel that can improve the adaptability of cable-laying vessels.

[0004] To solve at least one of the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A deep-sea cable-laying vessel according to an embodiment of the present invention includes:

[0006] The hull, which is equipped with a main working deck;

[0007] The cable storage device, located on the main working deck, includes a first cable spool and a second cable spool for storing cables respectively;

[0008] The first work line is set along the length of the hull and is used to guide the cables of the first cable turntable or the second cable turntable for deep-water cable laying operations.

[0009] The second work line is set along the length of the hull and is used to guide the cables of the first cable turntable or the second cable turntable for shallow water cable laying operations.

[0010] The third work line is set up alongside the second work line along the width of the hull and is used to guide the cables of the first or second cable turntable for shallow water cable laying operations.

[0011] The cable splicing room is located in the first work line and is used for cable splicing and maintenance during deep-water cable laying.

[0012] In one embodiment of the present invention, the second cable turntable is located on the side of the first cable turntable away from the first working line.

[0013] In one embodiment of the present invention, the deep-sea cable-laying vessel further includes:

[0014] A first cable guide device is disposed between the first cable turntable and the first working line, and is used to pull the cable of the first cable turntable to the first working line;

[0015] The second cable guide device is installed between the first cable turntable and the second working line, and is used to pull the cable of the first cable turntable to the second working line or the third working line.

[0016] The third cable guide device is installed between the first cable turntable and the second cable turntable, and is used to pull the cable of the second cable turntable to the second or third working line.

[0017] In one embodiment of the present invention, the first cable guide device, the second cable guide device, and the third cable guide device are each provided with a cable pulling machine.

[0018] In one embodiment of the present invention, the first production line includes:

[0019] The first cable tensioner is located at the end of the cable splicing room away from the cable storage device.

[0020] The drum machine is located at the end of the first cable tensioner away from the cable splicing chamber;

[0021] The second cable tensioner is located at the end of the drum machine away from the cable splicing room;

[0022] The first cable entry roller is located at the stern of the ship and at the end of the second cable tensioner away from the drum machine.

[0023] In one embodiment of the present invention, the second production line includes:

[0024] Third cable tensioner;

[0025] The fourth cable tensioner, the third cable tensioner and the fourth cable tensioner are arranged sequentially along the length of the hull, with the third cable tensioner located between the fourth cable tensioner and the cable storage device;

[0026] The cable binding machine is located at the end of the fourth cable tensioner away from the third cable tensioner, and is used to bind the cables of the first cable turntable and the second cable turntable that are simultaneously fed to the second working line.

[0027] The first cable brake is located at the end of the cable binding machine away from the third cable tensioner;

[0028] The second cable entry roller is located at the stern of the ship, at the end of the first cable brake away from the cable tying machine.

[0029] In one embodiment of the present invention, a cable roller is provided between the first cable brake and the cable binding machine.

[0030] In one embodiment of the present invention, the third production line includes:

[0031] The third cable entry roller is located at the stern of the ship;

[0032] The second cable brake is located between the third cable inlet roller cable tensioner and the cable storage device.

[0033] The third cable tensioner can be transferred from the second operating line to the third operating line and is located between the second cable brake and the cable storage device. The cable splicing room can be transferred from the first operating line to the third operating line and is located between the third cable tensioner and the cable storage device.

[0034] In one embodiment of the present invention, a gantry is provided at the stern of the hull, and a plurality of pulleys are arranged sequentially on the gantry along the width direction of the hull.

[0035] In one embodiment of the present invention, the deep-sea cable-laying vessel further includes:

[0036] Auxiliary working deck, located above the main working deck;

[0037] The plow-receiving and releasing winch is installed on the auxiliary working deck;

[0038] The steel wire rope entry roller is installed on the auxiliary working deck;

[0039] The burying plow is connected to the burying plow via a wire rope passing through a water-entry roller on the burying plow launching winch.

[0040] The umbilical cable winch is set on the auxiliary working deck and connected to the burial plow via an umbilical cable;

[0041] The first, second, and third work lines pass under the auxiliary work deck.

[0042] The above-described technical solution of the present invention has at least one of the following beneficial effects:

[0043] The deep-sea cable-laying vessel of the present invention improves the vessel's operational adaptability and construction efficiency by setting up a first operating line, a second operating line, and a third operating line respectively. The first operating line is used specifically for deep-water cable-laying and connection operations, while the second and third operating lines are used for single-cable shallow-water cable-laying and double-ditch double-cable shallow-water cable-laying operations. This achieves coverage of different operating scenarios from shallow to deep water and effectively improves the cable-laying vessel's adaptability to waters of different depths. Attached Figure Description

[0044] Figure 1This is a schematic diagram of the structure of a deep-sea cable-laying vessel in one embodiment of the present invention;

[0045] Figure 2 This is a schematic diagram of the structure of a deep-sea cable-laying vessel performing deep-water cable-laying operations in one embodiment of the present invention;

[0046] Figure 3 This is a schematic diagram of the auxiliary working deck of a deep-sea cable-laying vessel in one embodiment of the present invention.

[0047] Figure 4 This is a schematic diagram of the structure of a deep-sea cable-laying vessel's second operating line performing shallow-water cable-laying operations in one embodiment of the present invention;

[0048] Figure 5 This is another structural schematic diagram of a deep-sea cable-laying vessel's second operating line performing shallow-water cable-laying operations in one embodiment of the present invention.

[0049] Figure 6 This is a schematic diagram of the structure of a deep-sea cable-laying vessel's third operating line performing shallow-water cable-laying operations in one embodiment of the present invention;

[0050] Figure 7 This is another structural schematic diagram of a deep-sea cable-laying vessel's third operating line performing shallow-water cable-laying operations in one embodiment of the present invention.

[0051] Figure 8 This is a schematic diagram of the structure of the second working line of the deep-sea cable-laying vessel for double cable binding operation in one embodiment of the present invention;

[0052] Figure 9 This is a schematic diagram of the structure of a deep-sea cable-laying vessel performing a single-plow, double-ditch, double-cable laying operation in one embodiment of the present invention.

[0053] Reference numerals: 100, Hull; 101, Cable roller; 110, Gantry; 120, Auxiliary working deck; 130, burying plow winch; 140, Wire rope entry roller; 150, Burying plow; 160, Umbilical cable winch; 200, Cable storage device; 210, First cable turntable; 220, Second cable turntable; 310, Cable splicing room; 320, Drum machine; 330, Second cable tensioner; 340, First cable entry roller; 410, Third cable tensioner; 420, Fourth cable tensioner; 430, Cable binding machine; 440, First cable brake; 450, Second cable entry roller; 510, Third cable entry roller; 520, Second cable brake; 600, First cable guide device; 700, Second cable guide device; 800, Third cable guide device. Detailed Implementation

[0054] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention are within the scope of protection of the present invention.

[0055] The following is a detailed description of a multi-functional cable-laying vessel according to an embodiment of the present invention, with reference to the accompanying drawings.

[0056] like Figure 1 As shown, the multi-functional cable-laying vessel of this invention may include: a hull 100, a cable storage device, a first working line, a second working line, a third working line, and a cable splicing room 310. The hull 100 is provided with a main working deck; the cable storage device 200 is disposed on the main working deck and includes a first cable reel 210 and a second cable reel 220 for storing cables, respectively, the first cable reel 210 and the second cable reel 220 being located at a position slightly off-center from the stern of the main working deck; the first working line is arranged along the length of the hull 100 and is used to guide the cables of the first cable reel 210 or the second cable reel 220 for deep-water cable-laying operations, the operating depth of which is 3000 meters; the second working line... The first working line is set along the length of the hull 100 to guide the cables of the first cable turntable 210 or the second cable turntable 220 for shallow water cable laying operations; the second working line is set along the width of the hull 100 and is parallel to the second working line to guide the cables of the first cable turntable 210 or the second cable turntable 220 for shallow water cable laying operations, with a working depth of 0-200 meters; the cable splicing room 310 is set in the first working line and is used for cable splicing and maintenance operations during deep water cable laying.

[0057] In this embodiment, by setting up a first, second, and third working line respectively, the first working line is used specifically for deep-water cable laying and connection operations, while the second and third working lines are used for single-cable shallow-water cable laying and double-ditch double-cable shallow-water cable laying operations, thereby improving the vessel's operational adaptability and construction efficiency. Simultaneously, by setting up a cable splicing room 310 in the first working line, cable splicing and maintenance operations are performed during deep-water cable laying, enabling cable splicing and maintenance operations in deep-water operations. The second and third working lines are arranged side-by-side along the 100-meter length of the hull, suitable for single-cable laying and simultaneous double-ditch double-cable laying operations in shallow water areas. Therefore, not only is a reasonable separation of deep-water and shallow-water operations achieved, covering different operational scenarios from shallow to deep water, effectively improving the adaptability of the cable-laying vessel to waters of different depths, but the parallel collaboration of the second and third working lines also improves the construction efficiency of shallow-water operations.

[0058] like Figure 1 As shown, the second cable turntable 220 is located on the side of the first cable turntable 210 away from the first work line. The first cable turntable 210 and the second cable turntable 220 each store a roll of cable. The first cable turntable 210 and the second cable turntable 220 can be driven separately by their respective corresponding motors or other drive mechanisms.

[0059] In this embodiment, the first cable turntable 210 serves as the main cable storage device, and the cables stored in the first cable turntable 210 are mainly used for deep-water laying operations via the first working line. The second cable turntable 220 stores a roll of cable, which can be used to complete single-cable laying operations in shallow water areas via the second or third working line, or to complete double-cable laying operations in shallow water areas in conjunction with the first cable turntable 210, depending on the operational needs. Furthermore, in one embodiment of the present invention, the diameter of the second cable turntable 220 can be smaller than the diameter of the first cable turntable 210. Since the diameter of the second cable turntable 220 is smaller than that of the first cable turntable 210, it is convenient to install in the relatively limited space of the main working deck, and it also provides space redundancy for the arrangement of the cable transfer, traction, and guidance systems.

[0060] like Figure 1 As shown, the deep-sea cable-laying vessel also includes: a first cable guide device 600, a second cable guide device 700, and a third cable guide device 800. The first cable guide device 600 is located between the first cable reel 210 and the first working line, used to pull the cable from the first cable reel 210 to the first working line. The second cable guide device 700 is located between the first cable reel 210 and the second working line, used to pull the cable from the first cable reel 210 to the second or third working line. The third cable guide device 800 is located between the first cable reel 210 and the second cable reel 220, used to pull the cable from the second cable reel 220 to the second or third working line. Each of the first cable guide device 600, the second cable guide device 700, and the third cable guide device 800 is equipped with a cable pulling machine, and each device can store cables in the first cable reel 210 and the second cable reel 220, respectively.

[0061] In one embodiment of the present invention, the first cable guide device 600 can directly correspond to the first cable turntable 210 and the first working line, ensuring efficient and stable cable transport during deep-water cable laying operations. The second cable guide device 700 provides a path from the first cable turntable 210 to the second or third working line, while the third cable guide device 800 provides a path from the second cable turntable 220 to the second or third working line. Thus, single or double cable laying in shallow water areas can be flexibly carried out according to the construction environment. Furthermore, the first cable guide device 600, the second cable guide device 700, and the third cable guide device 800 are all equipped with cable pulling machines, which can apply stable traction force to the cable, ensuring uniform tension and smooth operation during cable transport, further improving reliability and operational efficiency.

[0062] like Figure 1 and Figure 2 As shown, the first operating line includes: a first cable tensioner 311, a drum motor 320, a second cable tensioner 330, and a first cable inlet roller 340. The first cable tensioner 311 is located at the end of the cable splicing chamber 310 away from the cable storage device 200; the drum motor 320 is located at the end of the first cable tensioner 311 away from the cable splicing chamber 310; the second cable tensioner 330 is located at the end of the drum motor 320 away from the cable splicing chamber 310; and the first cable inlet roller 340 is located at the stern of the hull 100, at the end of the second cable tensioner 330 away from the drum motor 320. Both the first cable tensioner 311 and the second cable tensioner 330 are draw-off / hold-back cable tensioners (DOHB).

[0063] In this embodiment, the cable splicing chamber 310 can perform cable splicing and maintenance operations during deep-water laying. The first cable tensioner 311, installed within the cable splicing chamber 310, can both securely position the cable during splicing operations and provide initial traction during laying. The drum machine 320 can perform cable winding and unwinding operations, providing sufficient tension to the cable. After the cable is wound multiple times on the drum machine 320, it is conveyed to the second cable tensioner 330, which can further apply controllable tension to the cable, ensuring linear delivery and dynamic tension balance during laying. Finally, the first cable entry roller 340 smoothly guides the cable underwater. In addition, both the first cable tensioner 311 and the second cable tensioner 330 are pull-out and pull-back type cable tensioners, which can meet the needs of bidirectional adjustment of cable tension in deep-water cable laying operations. They can provide outward traction force during cable laying, stably control the cable release speed, and also perform cable pull-back operations under special working conditions, such as meeting the needs of retrieval, adjustment or suspension of laying, which significantly improves the operational flexibility of the operating system and its ability to cope with complex sea conditions.

[0064] like Figure 1 The second working line includes: a third cable tensioner 410, a fourth cable tensioner 420, a cable tying machine 430, a first cable brake 440, and a second cable entry roller 450. The third cable tensioner 410 and the fourth cable tensioner 420 are arranged sequentially along the length of the hull 100, with the third cable tensioner 410 located between the fourth cable tensioner 420 and the cable storage device 200. The cable tying machine 430 is located at the end of the fourth cable tensioner 420 opposite to the third cable tensioner 410, and is used to double-tie the cables simultaneously delivered to the first cable turntable 210 and the second cable turntable 220 in the second working line. The first cable brake 440 is located at the end of the cable tying machine 430 opposite to the third cable tensioner 410. The second cable entry roller 450 is located at the stern, at the end of the first cable brake 440 opposite to the cable tying machine 430.

[0065] In this embodiment, both the third cable tensioner 410 and the fourth cable tensioner 420 can simultaneously accommodate two cables passing through in parallel. For example, they include a V-shaped pressure block and a support roller. One cable passes through the V-shaped pressure block for tensioning, while the other cable passes through the support roller, thus ensuring that the two cables do not interfere with each other and are subjected to balanced force during tensioning, conveying, and water entry. Taking a double-cable binding operation as an example, such as... Figure 8As shown, the cables from the first cable turntable 210 and the second cable turntable 220 enter the second working line together. The third cable tensioner 410 clamps one cable, while the fourth cable tensioner 420 clamps the other. Tension adjustment can be applied to the cables from the first and second cable turntables 210 and 220 respectively, ensuring that the two cables maintain a stable and synchronous transport state before merging. The cable binding machine 430 is located at the end of the fourth cable tensioner 420 opposite to the third cable tensioner 410. It can synchronously position and automatically bind the two parallel cables, forming a structurally stable double-cable single-bundle structure, improving the accuracy and efficiency of shallow water double-ditch laying operations. Then, the first cable brake 440, located after the binding machine, can effectively stop the cable in case of emergencies, preventing impact on the third cable tensioner 410, the fourth cable tensioner 420, the cable storage device 200, and the hull 100. Finally, the bundled cable was guided into the water by the second cable entry roller 450, completing the simultaneous laying of two cables in the shallow water area.

[0066] like Figure 3 As shown, a cable roller 101 is provided between the first cable brake 440 and the cable binding machine 430. This effectively supports and guides the cable during operation, preventing damage due to suspension, friction, or excessive bending, thus ensuring the continuity of the cable laying operation and the safety of the cable.

[0067] In one embodiment of the present invention, the third working line includes a third cable entry roller 510 and a second cable brake 520. The third cable entry roller 510 is located at the stern of the hull 100; the second cable brake 520 is located between the cable tensioner of the third cable entry roller 510 and the cable storage device 200; the third cable tensioner 410 is also used to move from the second working line to the third working line during single-plow double-ditch double-cable laying operations or shallow-water cable laying operations on the third working line, and is located between the second cable brake 520 and the cable storage device 200, i.e., the second and third working lines share the third cable tensioner 410. Furthermore, the cable splicing room 310 can also be transferred from the first working line to the third working line and is located between the third cable tensioner 410 and the cable storage device 200.

[0068] In this embodiment, the third cable entry roller 510 is located at the stern of the ship, forming a symmetrical or parallel arrangement with the second cable entry roller 450. This allows the two cables to be delivered in parallel at the end of the laying process, meeting the path requirements of the single-plow, double-ditch, double-cable laying process. The second cable brake 520 is located between the third cable entry roller 510 and the cable storage device 200, which can effectively brake the cable in case of emergencies, preventing impact on the third cable tensioner 410, the cable storage device 200, and the ship hull 100. Furthermore, when single-plow, double-ditch, double-cable laying operations are performed on the second and third working lines, or when shallow-water cable laying operations are performed on the third working line, the third cable tensioner 410 can be moved from the second working line to a predetermined position between the second cable brake 520 and the cable storage device 200 on the third working line, giving the third working line complete tensioning, braking, and delivery capabilities. By adjusting its position, the third cable tensioner 410 can independently perform tension adjustment in the third work line, ensuring the stable operation of the cable led from the first or second cable turntable 220 during the laying process. This improves the configuration efficiency and engineering adaptability under multi-depth, multi-cable type, and multi-path laying conditions, and reduces the number of tensioners. Furthermore, when cable splicing and maintenance are required during shallow water cable laying operations, the cable splicing room 310 can be moved from the first work line to the third work line, at which point the cable splicing room 310 is located between the third cable tensioner 410 and the cable storage device 200. This further improves operational flexibility and engineering adaptability. In this embodiment, the movement of the third cable tensioner 410 and the cable splicing room 310 can be achieved in various ways, such as using a crane for lifting, or using pulleys and slides to achieve smooth transfer along a preset path. The specific method used can be flexibly determined according to the ship's structural layout, operational requirements, and equipment configuration; this application does not limit this.

[0069] In one embodiment of the present invention, a gantry 110 is provided at the stern of the hull 100, and a plurality of pulleys are sequentially arranged on the gantry 110 along the width direction of the hull 100. The deep-sea cable-laying vessel also includes: an auxiliary working deck 120, a burying plow launching winch 130, a wire rope water-entry roller 140, a burying plow 150, and an umbilical cable winch 160. The auxiliary working deck 120 is located above the main working deck; the burying plow launching winch 130 is located on the auxiliary working deck 120; the wire rope water-entry roller 140 is located on the auxiliary working deck 120; a wire rope passes through the wire rope water-entry roller 140 and is connected to the burying plow 150 on the burying plow launching winch 130; the umbilical cable winch 160 is located on the auxiliary working deck 120 and is connected to the burying plow 150 via an umbilical cable; and the first working line, the second working line, and the third working line pass under the auxiliary working deck 120. The bottom of the gantry 110 can be hinged to the hull 100. Through a hydraulic push rod and other drive mechanism, the gantry 110 can swing back and forth between the hull 100 and the sea surface, which facilitates the entry and retrieval of the burying plow 150.

[0070] In this embodiment, the wire rope output by the burial plow winch 130 is led out through the wire rope inlet roller 140 and further passes through multiple pulleys set on the stern gantry 110, realizing the hoisting, cable laying, and precise guidance control of the burial plow 150. This effectively ensures the operational stability and trajectory controllability of the burial plow 150 during water entry, operation, and retrieval. The umbilical cable winch 160 provides the necessary energy, control, and communication support through the umbilical cable connected to the burial plow 150, ensuring uninterrupted functional response and signal transmission of the burial plow 150 during underwater operations. Furthermore, since the first, second, and third operating lines pass under the auxiliary working deck 120, efficient space utilization is achieved through a longitudinally layered arrangement.

[0071] The following is an exemplary description of the specific use of the deep-sea cable-laying vessel according to the present invention.

[0072] like Figure 2 As shown, during deep-water cable laying operations, the cable in the first cable turntable 210 can be pulled to the first working line through the first cable guide device 600. After being tensioned by the first cable tensioner 311 behind the cable splicing house 310, it is fed into the drum machine 320. The cable is wound around the drum of the drum machine 320 several times and then passes through the second cable tensioner 330. After that, it enters the water through the first cable water entry roller 340 and finally reaches the seabed of the target sea area.

[0073] like Figure 4 and Figure 5As shown, during shallow-water cable laying operations on the second work line, the cable in the first cable turntable 210 can be pulled to the second work line via the second cable guide device 700, or the cable in the second cable turntable 220 can be pulled to the second work line via the third cable guide device 800. Then, after being tensioned by the third cable tensioner 410 and / or the fourth cable tensioner 420, the cable is fed into the cable binding machine 430 and the first cable brake 440, and subsequently enters the water via the second cable entry roller 450. At this point, the cable can be laid and buried simultaneously with the burial plow 150, or it can be laid on the seabed and buried by a subsequent trenching machine.

[0074] like Figure 6 and Figure 7 As shown, during shallow-water cable laying operations on the third working line, the third cable tensioner 410 can be moved from the second working line to the third working line. Then, the cable in the first cable turntable 210 is pulled to the third working line via the second cable guide device 700, or the cable in the second cable turntable 220 is pulled to the third working line via the third cable guide device 800. After being tensioned by the third cable tensioner 410, the cable is fed into the second cable brake 520, and then enters the water via the third cable water entry roller 510. At this time, the cable can be laid and buried simultaneously with the burial plow 150, or it can be laid on the seabed and buried by a subsequent trenching machine.

[0075] like Figure 8 As shown, during the double-cable binding operation on the second working line, the third cable tensioner 410 is located in the second working line. The cable in the first cable turntable 210 is pulled to the second working line via the second cable guide device 700, and simultaneously, the cable in the second cable turntable 220 is pulled to the second working line via the third cable guide device 800. The two cables are then passed sequentially through the third cable tensioner 410 and the fourth cable tensioner 420. At this time, the third cable tensioner 410 tensions one cable, and the fourth cable tensioner 420 tensions the other cable. Tension adjustment can be applied to the cables from the first cable turntable 210 and the second cable turntable 220 respectively, ensuring that the two cables maintain a stable and synchronous transport state before merging. Then, the two cables synchronously enter the cable binding machine 430, which can synchronously position and automatically bind the two parallel-transmitted cables, forming a structurally stable double-cable single-bundle structure, improving the accuracy and efficiency of shallow water double-ditch laying operations. Then, the first cable brake 440, located after the lashing machine, applies precise braking to the lashed double cable bundle, preventing tensile impacts caused by sea conditions or construction. Finally, the lashed cable is guided into the water by the second cable entry roller 450, completing the synchronous laying of the double cables in shallow water.

[0076] like Figure 9As shown, during single-plow, double-ditch, double-cable laying operations, the third cable tensioner 410 can be moved from the second working line to the third working line. Then, the cable in the first cable turntable 210 can be pulled to the second working line via the second cable guide device 700, while the cable in the second cable turntable 220 can be pulled to the third working line via the third cable guide device 800. At this time, on the second working line, the cable is tensioned by the fourth cable tensioner 420 and then fed into the cable binding machine 430 and the first cable brake 440, subsequently entering the water via the second cable water entry roller 450. On the third working line, the cable is tensioned by the third cable tensioner 410 and then fed into the second cable brake 520, subsequently entering the water via the third cable water entry roller 510. Thus, single-plow, double-ditch, double-cable laying operations for deep-sea cable-laying vessels are realized.

[0077] In summary, the deep-sea cable-laying vessel of the present invention improves the vessel's operational adaptability and construction efficiency by setting up a first operating line, a second operating line, and a third operating line respectively. The first operating line is used specifically for deep-water cable-laying and connection operations, while the second and third operating lines are used for single-cable shallow-water cable-laying and double-ditch double-cable shallow-water cable-laying operations. This achieves coverage of different operating scenarios from shallow to deep water and effectively improves the cable-laying vessel's adaptability to waters of different depths.

[0078] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms "an" or "a" and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "connected" or "linked" and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up," "down," "left," "right," etc., are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship also changes accordingly.

[0079] The above are preferred embodiments of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A deep-sea cable-laying vessel, characterized in that, include: The hull, on which a main working deck is provided; A cable storage device, installed on the main working deck, includes a first cable reel and a second cable reel for storing cables respectively; The first work line is set along the length of the hull and is used to guide the cable of the first cable turntable or the second cable turntable to carry out deep-water cable laying operations. The second work line is set along the length of the hull and is used to guide the cable of the first cable turntable or the second cable turntable to carry out shallow water cable laying operations. The second work line includes a third cable tensioner. The third work line is set up alongside the second work line along the width direction of the hull and is used to guide the cable of the first cable turntable or the cable of the second cable turntable to carry out shallow water cable laying operations. A cable splicing room is set up in the first work line and is used for cable splicing and maintenance work during deep-water cable laying. The first production line includes: The first cable tensioner is located at the end of the cable splicing room away from the cable storage device. A drum motor is located at the end of the first cable tensioner away from the cable splicing chamber. The second cable tensioner is located at the end of the drum machine away from the cable splicing chamber; The first cable entry roller is located at the stern of the hull and at the end of the second cable tensioner away from the drum machine; the second working line also includes: The fourth cable tensioner is provided, wherein the third cable tensioner and the fourth cable tensioner are arranged sequentially along the length of the hull, and the third cable tensioner is located between the fourth cable tensioner and the cable storage device. A cable binding machine is installed at one end of the fourth cable tensioner away from the third cable tensioner, and is used to bind the cable of the first cable turntable and the cable of the second cable turntable simultaneously fed to the second working line. The first cable brake is located at the end of the cable binding machine away from the third cable tensioner; The second cable entry roller is located at the stern of the ship and at the end of the first cable brake that is away from the cable tying machine. The third production line includes: The third cable entry roller is located at the stern of the hull; The second cable brake is located between the third cable inlet roller cable tensioner and the cable storage device, and is used to brake the cable in case of an emergency. The third cable tensioner can be transferred from the second working line to the third working line and is located between the second cable brake and the cable storage device. The cable splicing room can be transferred from the first working line to the third working line and is located between the third cable tensioner and the cable storage device.

2. The deep-sea cable-laying vessel according to claim 1, characterized in that, The second cable turntable is located on the side of the first cable turntable that is away from the first work line.

3. The deep-sea cable-laying vessel according to claim 2, characterized in that, Also includes: A first cable guide device is disposed between the first cable turntable and the first working line, for pulling the cable of the first cable turntable to the first working line; The second cable guide device is disposed between the first cable turntable and the second working line, and is used to pull the cable of the first cable turntable to the second working line or the third working line; A third cable guide device is disposed between the first cable turntable and the second cable turntable, and is used to pull the cable of the second cable turntable to the second working line or the third working line.

4. The deep-sea cable-laying vessel according to claim 3, characterized in that, The first cable guide device, the second cable guide device, and the third cable guide device are each equipped with a cable pulling machine.

5. The deep-sea cable-laying vessel according to claim 1, characterized in that, A cable roller is provided between the first cable brake and the cable binding machine.

6. The deep-sea cable-laying vessel according to claim 1, characterized in that, A gantry is provided at the stern of the hull, and multiple pulleys are arranged sequentially on the gantry along the width direction of the hull.

7. The deep-sea cable-laying vessel according to claim 1, characterized in that, The deep-sea cable-laying vessel also includes: A secondary working deck is located above the main working deck; A plow-raising and lowering winch is installed on the auxiliary working deck; A steel wire rope entry roller is installed on the auxiliary working deck; The burying plow is connected to the burying plow via a wire rope passing through a water-entry roller. An umbilical cable winch is installed on the auxiliary working deck and connected to the burying plow via an umbilical cable; The first work line, the second work line, and the third work line pass under the auxiliary work deck.

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