35results about "Cable-laying vessels" patented technology

Disclosed is method of handling a transfer line, comprising a cable connector of a power cable for electrical power transfer between an offshore power source and an offshore unit, such as a vessel. The method comprises obtaining a trigger indication indicating that at least one predetermined condition is met; and on the basis of the trigger indication, causing a feed line of the offshore power source, which feed line is detachably connected to the transfer line, to be paid out from the offshore power source in order to move the transfer line towards the offshore unit.

A cable reel configured to spool a subsea cable end (2) and supported fitting (4) onto the cable reel (6) is disclosed. The cable reel (6) comprises a first engagement means (110), said first engagement means (110) being complementary to a second engagement means (120), on the subsea cable end (2) or on the fitting (4) or on both. An assembly and a method of spooling a subsea cable end (2) and supported fitting (4) onto a cable reel (6) are also disclosed. The method comprises providing a first engagement means (110) on the cable reel (6); providing a second engagement means (120), being complementary with the first engagement means (110), on the subsea cable end (2) or on the fitting (4) or on both; and rotating the cable reel to automatically engage the first engagement means (110) and the second engagement means (120) to spool the subsea cable end (2) and fitting (4) onto the cable reel (6).

The invention provides an elongated flexible article loading device, a carousel, and a vessel, and methods of using the same. The elongated flexible article loading device includes an extension arm including an arcuate section extending along an arcuate section arc between an arcuate section working end and an arcuate section carousel end, the arcuate segment arc has an arcuate segment arc center point, an arcuate segment arc radius equal to or greater than a minimum bending radius of the elongate flexible article, an arcuate segment arc plane including the arcuate segment arc, an arcuate segment arc axis including the arcuate segment arc center point and transverse to, preferably perpendicular to, the arcuate segment arc plane, characterized in that the extension arm is configured to be mounted in the elongate flexible article loading device in a manner movable between a retracted position and an extended position, and the arcuate section arc is configured to rotate about an arcuate section arc axis when the extension arm is moved between the retracted position and the extended position.

An apparatus (40) for mounting a bouyancy aid (10) on an elongate line (84), the buoyancy aid (10) having an upper portion (12b) and a lower portion (12a) which are separable to enable the buoyancy aid (10) to be mounted on the elongate line (84), the apparatus (40) comprising a movable frame (42) on which is mounted a support cradle (44) and a opening arrangement (46), the opening arrangement (46) having a gripper (48) which is operable to grip an upper portion (12b) of a buoyancy aid (10) placed on the support cradle (44), the apparatus (40) further comprising a drive system which is operable to move the frame (42) between a loading position in which a buoyancy aid (10) may be placed on the support cradle (44) and an installation position, and also to move the opening arrangement (46) and / or the support cradle (44) relative to the frame (42) in such a way that when the gripper (48) is gripping the upper portion (12b) of a buoyancy aid (10) placed on the support cradle (44), the upper portion (12b) separates from the lower portion (12a).

The invention provides an ultrahigh-pressure submarine cable accessory mounting platform ship attitude compensation device which is characterized in that a mounting platform is arranged on a ship body, the ship body is provided with a main control module, and the ship body is provided with a first distance measuring sensor and a first angular velocity sensor which are used for detecting the distance between the ship body and the sea surface and the first inclination angle of the ship body relative to the horizontal plane respectively; a plurality of first driving mechanisms and second driving mechanisms of the mounting platform are arranged on a ship body, the first driving mechanisms are connected with a positioning frame, the second driving mechanisms are connected with an operation panel, a stabilizer is connected with the operation panel and the positioning frame, and a second distance measuring sensor and a second angular velocity sensor are arranged on the operation panel. The first detector is used for detecting the distance between the operation panel and the ship body and a second inclination angle of the operation panel relative to the horizontal plane; the main control module is in communication connection with the control unit so as to perform coarse adjustment and fine adjustment on the operation panel through cooperation of the first inclination angle and the second inclination angle and the control unit. The operation stability of the installation platform can be improved.

The object is to provide an installation method with improved workability. [Solution] The system comprises a mooring step S1 for mooring the ship, and an installation step S4 for installing and fixing a cable laying unit used for cable laying to the ship moored in the mooring step S1, and the cable laying unit is removable from the ship.

A protection cage (2) for handling a fitting (4) on a subsea cable (6), the subsea cable (6) extending along an axis. The protection cage having a frame (8, 10, 12), the frame being able to be opened and closed to surround the fitting. The protection cage is configured to support the fitting therewithin, and is configured to allow rotation of the fitting (4) and cable (6) around the axis. A power cable comprising a fitting (4) and such a protection cage (2), wherein the protection cage (2) is surrounding and supporting the fitting (4). A protection assembly (40) comprising the protection cage (2) and a deck-support (42), the deck-support being moveable.

The utility model discloses a cable unwinding and laying ship for water photovoltaic power station, including ship body, the bow position of ship body is equipped with power device, the central position of ship body is equipped with pay -off platform for fixed cable pay -off reel, the stern platform side position of ship body is equipped with cable conveyor and cable lifting device, the cable lifting device includes gantry that installs on the stern platform, the cable trolley is swinged to have on the gantry, the cable pay -off reel is around and is equipped with cable line, one end of cable line can move to the stern direction through cable conveyor and cable trolley, the utility model discloses a cable unwinding and laying ship structure firm, unwinds and lays cable and uses the positioning anchor rod to stabilize the ship body, and when unwinding and laying construction, cable is hauled by cable conveyor, has the characteristics such as simple structure, strong water area adaptability, saves manual work, is convenient for operation, and convenient operation.

The utility model relates to the technical field of underwater cable laying robots, in particular to a chain cutter type deep sea cable laying robot which comprises a main body machine and walking assemblies connected to the two sides of the main body machine in the Y direction and further comprises at least one chain cutter device and a cable holding and pressing protection device arranged in the Y direction, one end of the chain cutter device is connected to the side face of the lower portion of the main body machine, and the other end of the chain cutter device is arranged in the X direction. One end of the holding and pressing cable protection device is connected to the middle of the main body machine, the other end of the holding and pressing cable protection device extends downwards in the Z direction, and a cable is clamped or laid and pressed at the end of the holding and pressing cable protection device. By arranging the holding and pressing cable protection device, cable damage caused by construction is avoided on the premise of guaranteeing high efficiency of underwater sea ditch digging, and the cable laying device has the advantages of being high in cable laying efficiency, high in safety and small in cable damage.

This invention provides a carousel (301) for storing a subsea cable with a subsea cable minimum bending radius and a subsea cable diameter, comprising a carousel hub (201), wherein the carousel hub comprises a workroom (202), characterized in that the carousel hub further comprises a carousel hub shell (101) encircling the workroom, the carousel hub shell comprises a perforation (106) configured for allowing the subsea cable to intersect with the carousel hub shell into the workroom, the perforation comprises an intersection bending guide (107) configured for bending the subsea cable according to an intersection bending radius (s) when the subsea cable intersects the carousel hub shell through the perforation, the intersection bending radius is greater than or equal to the subsea cable minimum bending radius. It further provides a ship for laying a subsea cable, and a use of a carousel according to this invention or a ship according to this invention.

A method of moving a subsea cable end (2) and supported fitting (4) on a vessel deck (30) between an onboarding position and an on-board cable-holding position. The method comprises locating the subsea cable end (2) with a protection cage (40) on a deck-support (20); and moving the protection cage (40) and deck-support (20) around the vessel deck (30) to the on-board cable-holding position.

A work platform (10) for performing a cable operation on a cable on a vessel having a vessel deck (7) has chutes (19a, 19b) for guiding the cable from the sea and onto the work platform (10), an overboarding system (18) and a number of modules (11, 12, 13, 14, 15). Each module (11, 12, 13, 14, 15) has a deck section and a support structure for supporting the deck section at a distance above the vessel deck (7). Each module (11, 12, 13, 14, 15) is configured to be lifted separately onto and away from the vessel deck (7). The deck sections of the modules together form a mezzanine deck on which the cable operation is performed. The overboarding system (18) is secured to the mezzanine deck. At least some of the equipment for performing the cable operation is stored below the mezzanine deck.

The invention relates to the technical field of submarine cable maintenance, and discloses an offshore wind power branch cable maintenance construction method which comprises the following steps: establishing a digital twinborn map of a construction sea area to formulate an overall recovery scheme of a fault submarine cable; a single intermediate joint and bending limiters at the two ends of the single intermediate joint are arranged at the fault point position of the submarine cable to generate a collaborative operation instruction set corresponding to the fault submarine cable; based on the collaborative operation instruction set and the digital twin map, a new cable laying path of the construction sea area is planned, and a new cable anchoring mode is set; and in combination with the overall recovery scheme, the collaborative operation instruction set, the new cable laying path and the new cable anchoring mode, submarine cable maintenance processing of the construction sea area is executed, and a submarine cable maintenance result is obtained. The submarine cable repairing operation time can be saved, and the submarine cable repairing efficiency is improved.

The invention relates to a water area high-density electrical method integrated cable towing system and a collection method thereof, and the system comprises a mother ship winch unit which is used for controlling a winch to collect and release a measurement cable and can guarantee that the measurement cable completely enters water; the cable laying unmanned ship comprises an unmanned ship cable-ship linkage mechanism which is used for being connected with the end portion of a measurement cable, can adjust the depth of the measurement cable in water and carries a GNSS-RTK positioning module and a communication module. An integrated high-density electrical method cable collects potential difference and current data under different electrode combinations by arranging a multi-electrode array. Through cooperative work of the mother ship winch unit, the cable laying unmanned ship and the integrated high-density electrical method cable, automatic laying, stable cable dragging and efficient recycling of the electrode cable in the water area environment are achieved, and the prominent problems of low efficiency, poor safety, insufficient cable measuring precision and the like in traditional water area high-density electrical method operation are fundamentally solved; and the method has obvious engineering application value and popularization prospect.

This invention provides a shallow-water navigation method that allows the vessel to easily approach the shore. [Solution] A method for navigating a barge 10, which comprises a hull 11 that can float on water and carry cargo, a propulsion device 12 for propelling the hull 11, and a ballast mechanism 13 for adjusting the inclination of the hull 11 with respect to the water surface Sf by changing the position or amount of ballast in the hull 11, into a shallow water area B1 connected to a shore Ld, the method comprising an inclination step S11 and a propulsion step S12. The inclination step S11 raises the shore Ld side of the hull 11 higher than the offshore side, which is the opposite side of the shore Ld, so that the hull 11 is inclined with respect to the water surface Sf. The propulsion step S12 propels the hull 11 toward the shore Ld while the hull 11 is inclined.

The installation comprises a line recovery system (32), to lift the submarine line (11) out of a body of water and a radiation detection unit (13), to detect a ionizing radiation emitted from the submarine line (11). The line recovery system (32) defines a line circulation space (80) through which the submarine line (11) follows a linear path. The detection unit (13) comprises : - a stand (70) fixedly or adjustably mounted in the line recovery system (32), in the vicinity of the line circulation space (80); - a radioactivity detector (72), carried by the stand (70) and configured to detect a radioactivity level in the line circulation space (80) at successive measurement times; - a recording unit (74), connected to the radioactivity detector (72) to record the successive measurements of the radioactivity level at successive measurement times.

A cable laying vessel and method are provided for laying an underwater cable, the cable laying vessel including a floating hull with a bow, a stern and a deck. The hull has a forward shipping direction. The cable laying vessel further includes a cable handling installation that includes a cable chute at the stern, and a cable quadrant and a quadrant manipulator for the cable quadrant on the deck. The cable chute includes a convex curved bottom wall with a bottom wall apex where the bottom wall faces furthest away from the stern. The bottom wall continues as from the bottom wall apex downwards back towards the stern. The cable chute includes a left outer guide wall and a right outer guide wall that extend under an angle with the bottom wall and that flare away from each other in a downward direction.

A system includes: a tube coupled to a topside structure at a surface location, wherein the tube is an I-Tube or a J-Tube; a subsea umbilical extending from the surface location to an underwater location, wherein the subsea umbilical is supported by the tube and a portion of the subsea umbilical extends through the tube; a sensor disposed within an annulus between an inner wall of the tube and an outer surface of the subsea umbilical, the sensor configured to take sensor measurements from a location in the annulus; and a communication system communicatively coupled to the sensor and configured to transmit data indicative of the sensor measurements to a remote location.

The aim is to provide a vessel that can handle multiple applications with a single unit and allows for easy switching between equipment. [Solution] The vessel 1 can switch between and install a first cartridge 30A and a second cartridge 30B within a single hull 2. Therefore, one vessel 1 can handle multiple uses. Furthermore, the first cartridge 30A has a first device 31A used for the first use, and the second cartridge 30B has a second device 31B used for the second use. Therefore, by simply switching cartridges on the hull 2, the equipment can be easily changed according to the use. As described above, one vessel can handle multiple uses, and equipment can be easily switched.

The invention is suitable for the technical field of ocean engineering, and provides a cable synchronous laying control method after multi-cable landing on an oil and gas platform, and the method comprises the steps: carrying out the grouping processing of N to-be-laid cables after landing on the platform on a ship deck, and obtaining M cable groups; the M cable groups are respectively arranged in the corresponding cable laying machines, and the length counts of all the cable laying machines are returned to zero; establishing an initial synchronization reference of the laying length of each cable group; and based on the initial synchronization reference, all cable distributors are controlled to perform iterative distribution at the same preset speed, a preset distance interval is taken as an iteration period, and real-time monitoring and adjustment are performed on each cable group in each iteration period. According to the invention, the problems that the cost is high and the reliability is reduced under complex sea conditions because the laying length of each cable is controlled by depending on a built-in counter of a shipborne cable laying machine in the existing cable synchronous laying method, and the synchronous control difficulty is increased under the condition that the number of the cable laying machines is less than the number of the cables to be laid are solved.

The invention relates to the field of marine equipment, in particular to an engineering ship capable of laying pipes and cables, which comprises a ship body provided with an upper deck and a lower deck; the upper layer pipe laying auxiliary operation line is arranged on the upper deck; the pipe stacking area corresponds to the upper-layer pipe laying auxiliary operation line and is used for storing pipes; the lower layer pipe laying auxiliary operation line is arranged on the lower deck; the pipe laying main operation line is arranged on the lower deck and corresponds to the lower-layer pipe laying auxiliary operation line; the cable storage device is arranged on the upper deck and used for storing cables; the first cable laying operation line is used for guiding the cable in the cable storage device to carry out shallow water cable laying operation; and the second cable laying operation line is used for guiding the cable in the cable storage device to carry out deepwater cable laying operation or carrying out shallow water cable laying operation synchronously with the first cable laying operation line. According to the engineering ship, the production cost can be saved, and meanwhile the operation efficiency is improved.

Buoyancy module 102 may be positioned and adjusted on umbilical 402 without needing to recover umbilical 402 to topside for removing or setting the position of the buoyancy module. Buoyancy module positioner 100 is deployed and buoyancy module 102 positioned into a predetermined position within parking frame 108 by using buoyancy module holder 104 to selectively spool out umbilical 402 until buoyancy module 102 reaches a predetermined position along umbilical 402 relative to parking frame 108. Buoyancy module 102 can then be locked inside parking frame 108.

The utility model relates to a turntable for storing a submarine cable and a ship for laying the submarine cable, the submarine cable has a submarine cable minimum bending radius and a submarine cable diameter, the turntable comprises a turntable hub, and the turntable is characterized in that the turntable hub comprises a working chamber.

An overboarding device (110) contiguously supports a flexible elongate element (12)whilst overboarding the flexible elongate element (12) from a vessel (114). The device comprises a movable support element (118) for supporting the flexible elongate element (12), the movable support element (118) having a plurality of support members (120) and each support member (120) having a support surface (140). At least one chain element(122) moves the movable support element (118), and the chain element (122) has a plurality of chain members (124). Each chain member (124) is attached to at least one said support member (120) and is pivotably attached to at least one adjacent chain member (124) at a chain pivot (158). A pivotable interface (166) between support surfaces (140) of adjacent support members (120) is positioned coaxially or substantially coaxially with the chain pivot (158) of the corresponding chain members (124).

A vehicle (2) for deploying a cable (4) into a trench (8) in the sea bed (10) is disclosed. The vehicle (2) comprises a body (12) adapted to move relative to the trench (8) in the sea bed (10), and a bellmouth (18) for engaging the cable (4) and mounted to the body, wherein the bellmouth (18) is adapted to define an open channel (20) in a direction facing the trench (8) for engaging the cable (4).

The invention provides a carousel for storing a subsea cable having a subsea cable minimum bend radius and a subsea cable diameter, the carousel comprising a carousel hub characterized in that the carousel hub comprises a working chamber. The invention also provides a vessel for laying submarine cables, as well as the use of the carousel according to the invention or of the vessel according to the invention.

The invention provides an unloading system for unloading elongate flexible articles having a minimum bending radius, comprising an unloading chute comprising a sliding surface having a sliding direction, characterized in that the sliding surface has a through-hole, referred to as a wheel groove, the unloading system further includes a laying wheel system including a pulley including a pulley axle positioned in a pulley axle direction transverse to the sliding direction, a pulley surface, and a pulley rotational direction consistent with the sliding direction, the pulley is configured to rotationally move about the pulley axle in the pulley rotational direction; a portion of the sheave surface is flush with the sliding surface and partially fills the sheave groove. The invention also provides a vessel for laying elongated flexible articles comprising the unloading system and a method of using the unloading system and / or the vessel.

The invention relates to a lateral riprap operation platform and a splicing method thereof.The lateral riprap operation platform comprises a hoisting mechanism for hoisting a riprap pipe and a riprap operation platform body installed on the ship side, the riprap operation platform body comprises two operation platform plates, and an operation gap is formed between the two operation platform plates; the width of the working gap is larger than the outer pipe diameter of the riprap pipe, two working positions are arranged between the two working platform plates and are the inner working position and the outer working position respectively, and the inner working position and the outer working position are each provided with a clamping mechanism used for clamping the riprap pipe. The lateral riprap operation platform and the splicing method thereof have the advantages of being convenient to splice and efficient.