43results about "Moon-pools" patented technology

The invention relates to the technical field of ships, and discloses an ice flowing prevention device applied to a polar region ship moon pool, which comprises ice pushing manipulators, the ice pushing manipulators are arranged on the upstream and the downstream of the moon pool, and the ice pushing manipulators can push ice flowing to enable the ice flowing towards the moon pool to be far away from the moon pool; the underwater sound ice detector is mounted at the bottom of the ship, and the underwater sound ice detector can monitor position data of flowing ice in water relative to the ice pushing manipulator; the ice block crushers are installed at the positions, located on the upstream and the downstream of the moon pool, of the bottom of the ship, and the ice block crushers can crush flowing ice flowing to the ice block crushers; the ice stirring baffle is arranged at the bottom of the ship and located on the periphery of the moon pool, and when flowing ice flows through the ice stirring baffle, the flowing ice can be away from the moon pool along the outer surface of the ice stirring baffle; and the controller is electrically connected with the underwater sound ice detector, the ice pushing manipulator and the ice block crusher. Through the arrangement of the ice flowing prevention device, the flowing ice can be prevented from blocking the moon pool, and the flowing ice can also be prevented from colliding with underwater equipment.

Described herein is an offshore buoyant structure, a floating buoyant structure, and methods of loading and unloading a floatable wind turbine substructure. The offshore buoyant structure includes a split hull constructed and dimensioned in a manner to provide a long moon pool; and a floatable wind turbine substructure accommodated by the split hull and configured to receive a floating wind turbine with a portion of the floating wind turbine extending downwardly into the long moon pool such that relative motion between at least the offshore buoyant structure and the floatable wind turbine substructure or floating wind turbine when received by the floatable wind turbine substructure is minimized. The floating buoyant structure includes a split hull constructed and dimensioned in a manner to provide a long moon pool, the split hull is configured to accommodate a floatable wind turbine substructure or a floating wind turbine assembly and minimize relative motion therebetween.

The invention belongs to the technical field of ships, and discloses an energy dissipation device, a moon pool and a ship, the energy dissipation device is used for being arranged on the inner wall of the moon pool of the ship, and the energy dissipation device comprises a buffer plate arranged in the vertical direction and parallel to the inner wall of the moon pool; the perforated plate is arranged on the surface, deviating from the inner wall of the moon pool, of the buffer plate and is parallel to the buffer plate, a plurality of through holes for fluid to pass through are formed in the perforated plate, and each through hole penetrates through the perforated plate in the direction perpendicular to the buffer plate; the turbulent flow assembly is arranged on the face, away from the buffer plate, of the perforated plate and used for conducting flow guiding and dispersing on shaking fluid in the moon pool, the perforated plate is used for dissipating energy of the dispersed fluid, and the buffer plate is used for dissipating energy of the fluid penetrating through the perforated plate. According to the energy dissipation device, energy generated by fluid sloshing in the moon pool can be effectively dissipated, the amplitude and impact force of fluid sloshing are restrained, vibration and noise of equipment are reduced, and the safety, stability and safety of the equipment are improved.

The application belongs to the technical field of ships, and discloses an energy dissipation device, a moon pool and a ship. The energy dissipation device is arranged on the inner wall of the moon pool of the ship and comprises a buffer plate arranged in the vertical direction and parallel to the inner wall of the moon pool, a perforated plate arranged on the side of the buffer plate away from the inner wall of the moon pool and parallel to the buffer plate, a plurality of through holes for fluid passing being arranged on the perforated plate, each through hole penetrating the perforated plate in the direction perpendicular to the buffer plate, and a turbulence assembly arranged on the side of the buffer plate away from the perforated plate and used for guiding and dispersing the sloshing fluid in the moon pool. The perforated plate is used for dissipating the energy of the dispersed fluid, and the buffer plate is used for dissipating the energy of the fluid passing through the perforated plate. The energy dissipation device can effectively dissipate the energy generated by the fluid sloshing in the moon pool, suppresses the amplitude and impact force of the fluid sloshing, reduces the vibration and noise of the equipment, and improves the safety, stability and safety of the equipment.

The application discloses a kind of deep sea FPSO moon pool fluid resonance damping equipment and method, comprising the following steps: step one, assess the geometric structure of deep sea FPSO moon pool and its fluid dynamics characteristics, the geometric structure includes the size and shape of moon pool, the fluid dynamics characteristics include the flow rate and direction of fluid in a set period, adopt three-dimensional fluid dynamics simulation technique, calculate the resonance frequency of fluid in moon pool based on the geometric structure and fluid dynamics characteristics;Step two, based on the fluid dynamics data sample obtained by evaluation, design the layout and configuration scheme of damping equipment, the damping equipment includes at least three damping units. By accurately evaluating the geometric structure of moon pool and fluid dynamic characteristics, and using suitable damping equipment, the fluid resonance in the moon pool can be effectively reduced, thereby improving the structural stability and safety of FPSO. Reducing resonance phenomenon helps to prevent structural fatigue and prolong the service life of FPSO.

The present application relates to a kind of conjoined double moon pool operation system and its using method, the system is set in the middle of ship body, including blowout preventer group crane, blowout preventer group trolley, trolley converter, conjoined double moon pool, conjoined double moon pool is combined together by a small moon pool and a big moon pool, conjoined double moon pool both sides are longitudinally arranged trolley track, blowout preventer group trolley is placed in trolley track, and can be moved along the trolley track longitudinally, conjoined double moon pool tail transversely sets crane track, the blowout preventer group crane is placed in crane track, and can be moved along the crane track transversely.The present application can simultaneously meet the requirements of mud closed circulation drilling operation without marine riser and traditional marine riser drilling operation, realize the laying and recovery of underwater equipment and the suspension of mud return pipeline in two drilling operation modes, the setting of conjoined double moon pool has small waterline opening demand, improves the stability of ship body, and is beneficial to the overall arrangement of main deck.The whole system equipment is simple, and has strong compatibility, reduces investment cost.

According to a first aspect of the disclosure, there is provided a frame assembly for moving well intervention equipment relative to a moon pool in a floating vessel, the frame assembly comprising: a main frame configured to be moveable between a main frame parking position and a main frame operating position; a moveable subframe supported on the main frame for supporting and hanging off the well intervention equipment, said moveable subframe being configured to be moveable relative the main frame, between a subframe parking position and a subframe operating position.

The application discloses a moon pool system of a ship, the ship comprising a ship ballast device, the moon pool system comprising: a moon pool comprising a moon pool ballast device and a guide device; a moon pool bottom cover, the moon pool bottom cover draining water when the moon pool bottom cover is installed through the moon pool ballast device, the moon pool bottom cover comprising: a bottom cover air permeation device, the bottom cover air permeation device controlling water injection of the moon pool bottom cover; a bottom cover ballast device, the bottom cover ballast device controlling water injection of the moon pool bottom cover to adjust the barycentre and the centre of buoyancy position of the moon pool bottom cover; a bottom cover ballast device, the bottom cover ballast device draining water of the moon pool bottom cover after installation through the ship ballast device; a hoisting device, the hoisting device being arranged on a deck of the ship, the hoisting device installing the moon pool bottom cover to the bottom of the moon pool through the guide device. The application also discloses a method for installing a moon pool bottom cover of a moon pool system of a ship.

A vessel in various examples includes a hull, a moonpool, a tower column extending upward from deck on the hull, the tower column having a column axis, and at least one coupling device which is configured to couple with well intervention equipment, and which is disposed on the tower column so as to be movable around the column axis between a first position for storing the well intervention equipment, eg. above deck, and a second position for locating the well intervention equipment over the moonpool, e.g. for moonpool use. The well intervention equipment is in certain examples coiled tubing equipment comprising at least a coiled tubing injector head and a gooseneck. Examples of the tower and apparatus including the coupling device and methods of arranging the equipment for storage or moonpool use are also described.

The invention relates to an offshore vessel (1, 150) comprising a hull (2, 155) having a length of at least 200m, and having a riser moonpool (17, 170) situated on a longitudinal center line (14) of the vessel extending in a vertical direction from deck level to keel level, the moonpool comprising a riser connector member for attaching risers (27, 76, 76', 77, 77'), to the hull (2, 155). The riser connector member has a riser support structure (26) extending across the moonpool (17, 170) and placed in the moonpool near the bottom (18), for attaching the risers (27, 76, 76', 77, 77') at spaced apart positions distributed over the cross section of the moonpool. A manifold module (68, 69) may be situated alongside the moonpool (17, 170). A pulling system (70, 121, 172) is situated near deck level in an area at or near the moonpool, and comprises a movable lifting member (103, 105, 111) that is displaceable across the moonpool (17, 170) for attaching to the risers (27, 76, 76', 77, 77') and exerting an upward pulling force on the risers. The construction is compact and can accommodate a large number of risers with reduced sagging and fatigue weakening.

The present invention relates to the field of ship and marine engineering technology, and specifically to a wedge-shaped drag reduction device for a ship moon pool, comprising a moon pool, a longitudinal moving mechanism, a transverse telescopic mechanism, a wedge-shaped drag reduction mechanism and an automatic hatch, wherein the inner walls around the moon pool are provided with a plurality of hatches distributed at intervals, and the rear end of each hatch is provided with an automatic hatch, and the outer sides around the moon pool are provided with longitudinal moving mechanisms, and the front end of each longitudinal moving mechanism is provided with a transverse telescopic mechanism, and the front end of each transverse telescopic mechanism is provided with a wedge-shaped drag reduction mechanism. By providing the wedge-shaped drag reduction mechanism, the drag reduction angle of the wedge-shaped drag reduction plate can be changed according to the different forces of the agitation generated by the movement of seawater waves inside the moon pool, thereby achieving the best drag reduction efficiency. The present invention also provides a method for using the wedge-shaped drag reduction device for a ship moon pool.

The present invention discloses a ship moonpool mechanism with a double pulley system, comprising a moonpool channel and a moonpool ceiling located above the moonpool channel, wherein the inner wall of the moonpool channel is provided with a first slide rail and a second slide rail, wherein the first slide rail is provided with a first pulley, and the second slide rail is provided with a second pulley; the moonpool ceiling is provided with a lifting device connected to the first pulley and the second pulley, and the lifting device is used to drag the first pulley and the second pulley to either be raised or lowered independently or to be raised or lowered synchronously. The moonpool mechanism of this solution can adapt to a variety of lifting needs and can be applied to more usage scenarios. In addition, since two pulley systems are provided in this solution, when one pulley system fails, the other pulley system can be used to realize the mutual backup function between the two pulley systems.

The drag reduction device comprises a fixing frame and a connecting frame, separation rods are fixedly connected to the inner wall of the connecting frame at equal intervals along a straight line, rotating shafts are rotatably connected to the interior of the connecting frame at equal intervals along the straight line, and separation plates are fixedly connected to the outer sides of the rotating shafts; the invention relates to the technical field of drilling ship moon pool resistance reduction, and the resistance reduction device used in the drilling ship moon pool realizes the function of reducing fluid oscillation in the moon pool by arranging the connecting frame, the separation rod, the transmission mechanism, the separation plate, the swash hole, the adjusting mechanism, the swash frame, the rotating bracket and the swash column, so that the resistance of a ship can be effectively reduced; the transmission mechanism can drive the partition plate to rotate when the connecting frame moves downwards to make contact with the fixed frame, the rotating support can be driven to rotate for use when the partition plate rotates in cooperation with the adjusting mechanism, the partition plate can be driven to automatically rotate and be stored when the connecting frame is separated from the fixed frame, and the size of the device is reduced.

The application discloses a ship with a ROV system, which comprises a ship body and a ROV system, wherein the ROV system comprises a ROV body, a floating ball body and a ROV winding and releasing mechanism; the ship body is provided with an open deck, a ROV storage cabin and a moon pool; the ROV winding and releasing mechanism comprises a floating ball winding platform which is rotatable relative to the inner side wall of the ROV storage cabin, and can switch the floating ball winding platform between a storage position and a deployment position; when the floating ball winding platform is in the deployment position, the floating ball winding platform is parallel to the bottom of the ROV storage cabin and extends in the horizontal direction, and the floating ball winding platform at least partially protrudes from the first hatch; when the floating ball winding platform is in the storage position, the floating ball winding platform is perpendicular to the bottom of the ROV storage cabin, so that the floating ball winding platform is moved to the side outside the first hatch. The application is convenient for storing the ROV body, avoids the ROV body from occupying the space of the open deck, and is beneficial to the winding and releasing of the ROV body.

A drag-reducing separator plate for a moonpool, wherein the upper part thereof is a straight wall perpendicular to the sea level, the lower part thereof is connected to a baffle, and a connecting portion is connected between the straight wall and the baffle. The connecting portion may be in the shape of an arc. The shape of the drag-reducing separator plate matches that of the rear wall of the moonpool. During navigation, the drag-reducing separator plate is located in the middle or front of the moonpool, and can cooperate with a drag-reducing notch on the rear wall of the moonpool to greatly reduce the drag induced by intense sloshing of water in the moonpool during navigation of an offshore vessel. When offshore operations are performed under a station keeping condition, the drag-reducing separator plate is moved to the rear wall of the moonpool to avoid hindering the offshore operations.

A working cabin for underwater dangerous goods excavation is composed of a dangerous goods excavation workboat buoyancy hull, an underwater excavation working cabin, an underwater excavation working cabin lifting device, an underwater excavation working cabin lifting guide structure, a compressed air pipeline, a crane, an underwater camera, an internal pressure monitor, an external water pressure monitor and the like. The underwater dangerous goods excavation working cabin is installed on a special working ship capable of being self-propelled and self-positioned, and the underwater excavation working cabin is placed underwater through an underwater excavation cabin lifting device installed on the ship till the bottom of the underwater cabin makes contact with the river bottom. Compressed air is injected into the underwater cabin through a compressed air system on the ship, and when the pressure of the compressed air is larger than the pressure outside the excavating cabin, water in the underwater cabin can be pressed out of the excavating cabin. Therefore, the river bottom of the coverage area of the excavation cabin is in a water-free state.

The invention relates to a ship moon pool cover mounting process which is characterized in that moon pool covers are mounted on the upper side and the lower side of a ship moon pool and comprise an upper moon pool cover located on the upper side of the ship moon pool and a lower moon pool cover located on the lower side of the ship moon pool; the ship moon pool cover mounting process comprises the following steps: mounting an upper moon pool cover, namely mounting an upper moon pool cover accessory, mounting a connecting bolt, positioning a cover and welding a lower base; mounting of a lower moon pool cover: mounting of a lower moon pool cover accessory, mounting of the lower moon pool cover and mounting of a docking block; and carrying out tightness test. According to the ship moon pool cover installation technology, the load requirement of the upper moon pool cover is met, meanwhile, the use amount of steel of the upper moon pool cover can be reduced, the structural style of the upper moon pool cover is simplified, manufacturing, assembling and disassembling of the upper moon pool cover are facilitated, the lower moon pool can meet the water pressure requirement of 10 meters, and the ship moon pool cover installation technology is suitable for large-scale popularization and application. And the lower moon pool cover can be lifted from the moon pool cabin to a ship deck by using a crane on a ship.

The invention provides a liquid tank communicating structure of a moon pool closed space and a ship with the liquid tank communicating structure. The liquid tank communicating structure of the moon pool closed space comprises two oppositely-arranged partition plates, I-shaped steel guide rails, a base and a through pipe. One side of each of the two opposite partition plates is closed through the side wall of the moon pool; the I-shaped steel guide rail blocks the other sides of the two partition plates; the base blocks the bottoms of the two partition plates to form a closed space, and the closed space is filled with a corrosion inhibitor; and the through pipe penetrates through the base. According to the liquid tank communication structure of the closed space of the moon pool, the adjacent liquid tanks are communicated through the through pipes, accumulated liquid of all the liquid tanks is discharged in time through the drainage device in one liquid tank, and the technical problem of how to discharge accumulated water of the adjacent liquid tanks of the moon pool in the prior art is solved.

A stabilisation assembly for use in deep water. The assembly comprises a telescopic spar for securement within a moon pool of a floating support vessel. The securement mechanism includes a gimbal joint secured within the moon pool through which the spar is suspended to allow movement of the vessel with respect to the spar during use.

An offshore drilling vessel includes a hull and at least one opening in the hull arranged to receive an end of at least one submersible cable. The offshore drilling vessel also comprises a cable capture mechanism configured to lift the end of the at least one submersible cable through the at least one opening from a submersed position to a raised position. A cable connector is configured to couple to the end of the at least one submersible cable when the end of the at least one submersible cable is in the raised position such that the offshore drilling vessel comprises an external data and / or power connection via the submersible cable.

An underwater excavation work cabin capable of moving in multiple directions is composed of a dangerous goods excavation work ship buoyancy ship body, an underwater excavation work cabin, an underwater excavation work cabin lifting device, an underwater excavation work cabin lifting guide structure, a compressed air pipeline, a crane, an underwater camera, an internal pressure monitor, an external water pressure monitor and the like. The underwater dangerous goods excavation working cabin is installed on a special working ship capable of being self-propelled and self-positioned, and the underwater excavation working cabin is placed underwater through an underwater excavation cabin lifting device installed on the ship till the bottom of the underwater cabin makes contact with the river bottom. Compressed air is injected into the underwater cabin through a compressed air system on the ship, and when the pressure of the compressed air is larger than the pressure outside the excavating cabin, water in the underwater cabin can be pressed out of the excavating cabin. Therefore, the river bottom of the coverage area of the excavation cabin is in a water-free state.

The embodiment of the invention provides a moon pool oil cylinder protection device. The moon pool oil cylinder protection device comprises a moon pool trunk, a cabin cover body, an oil cylinder, a liquid level telemetering probe, a console panel, a suction port, a cabin bottom water pipeline and a cabin bottom fire pump. Drainage holes are drilled in each partition plate structure and the coaming of the hatch cover body, the positions of the drainage holes are lower than the bottom face of the oil cylinder, and when water leaks into the hatch cover when the ship is communicated with the sea, the water is drained into the moon pool trunk through the drainage holes. A liquid level telemetering probe is arranged at the corner of the stern end of the moon pool trunk, and the alarm point of the liquid level telemetering probe is lower than the bottom surface of the oil cylinder; the liquid level telemetering probe is connected with the console panel, and the console panel is connected with the suction port, the bilge water pipeline and the bilge fire pump. Water in a hatch cover frame is directly introduced into a moon pool trunk, a liquid level telemetering probe lower than an oil cylinder is arranged at a stern tilting structure in the moon pool trunk, and meanwhile, a suction port is arranged to be connected into a bilge water system, so that the problem that equipment cannot be used due to the fact that the oil cylinder is damaged and frozen once water leaks into a ship hatch cover is solved.

The invention belongs to the technical field of ships, and discloses a moon pool liquid level adjusting method and device and a ship. In the moon pool liquid level adjusting method, the working mode of a moon pool is determined to be a non-working mode; obtaining the liquid level height of the moon pool; comparing the liquid level height of the moon pool with a first threshold value; if the height of the liquid level of the moon pool is not smaller than the first threshold value, it is indicated that the liquid level of the moon pool is high at the moment, water in the moon pool needs to be drained immediately, otherwise, the draft depth of the ship can be increased, the stability of the ship is affected, and a drainage pump is started at the moment to pump out water in the moon pool; judging whether the liquid level height of the moon pool is reduced or not; and if not, the water quantity in the moon pool is not reduced, which may be caused by failure of the drainage pump, or the moon pool is greatly damaged, and the water discharge quantity of the drainage pump is lower than the water inlet quantity of the moon pool, so that the ballast pump is started at the moment to adjust the ballast condition of the ship so as to avoid overturning of the ship.

Arrangement (100) for use on a support surface (201) of a floating body such as a vessel (200), comprising: - a tool (103), adapted for coupling to an end of an elongated element (300); - a tool storage cradle (102), adapted for holding the tool (103) while being sea-fastened; - a skidding unit (101) displaceable over the support surface (201), the tool storage cradle (102) being comprised in the skidding unit (101), thereby allowing to transport the tool (103) over the support surface (201) from a storage location towards the elongated element (300), while being held in a storage position by the tool storage cradle (102), wherein the skidding unit (101) is adapted to guide the tool (103) while being brought from the storage position in the tool storage cradle (102) to a coupling position, thereby constraining movements of the tool (103) while bringing it into the coupling position.

Vessel (100) for installing an elongated element (600) in an underwater bottom (205), the vessel (100) comprising: - a hull (115) comprising a front wall (116), a back wall (117), and two opposing side walls (101, 102); - a deck (105) adapted to support one or more elongated elements (600); - a hoisting device (106) positioned on the deck (105), wherein the hull (115) comprises a recess (103) provided in a side wall (101), the recessed portion (104) of the side wall defining a channel (103) ending at its top end in a cutout (300) in the deck (105), and providing vertical access (204) from the cutout (300) to the underwater bottom (205), the recess (103) in the side wall (101) allowing the elongated element (600) to be lowered into the underwater bottom via the channel (103), while being connected at one end (602) to the hoisting device (106).

A stabilization assembly for deep water. The assembly includes a telescopic mast for securing within a moon pool of a floating support vessel. The securing mechanism includes a gimbal secured within the moon pool by which the mast is suspended to allow movement of the hull relative to the mast during use.

The present invention discloses a trackless ship moon pool mechanism, comprising a moon pool enclosure, a lifting device and a pulley, wherein a moon pool channel is formed in the moon pool enclosure, a moon pool ceiling is arranged above the moon pool channel, the lifting device is installed on the moon pool ceiling, and the pulley is lifted and lowered in the moon pool channel by the lifting device; the pulley comprises a frame and guide members arranged circumferentially around the frame, and the guide members respectively abut against the inner wall of the moon pool channel to guide the pulley to stably lift and lower in the moon pool channel. This scheme omits the track structure on the basis of ensuring stable lifting, which can avoid the problem of the track occupying the internal space of the moon pool channel, and at the same time can avoid the track interfering with the opening and closing of the moon pool hatch cover, and there is no need to open a gap on the moon pool hatch cover to avoid the track, and the moon pool channel can be completely closed after the moon pool hatch cover is closed.

The present application relates to a kind of ship moon pool cover installation process, moon pool cover is installed in the upper and lower sides of ship moon pool, including the upper moon pool cover of the upper side of ship moon pool and the lower moon pool cover of the lower side of ship moon pool;Ship moon pool cover installation process includes the following steps: the installation of upper moon pool cover, including the installation of upper moon pool cover accessory, the installation of connecting bolt, cover positioning and the welding procedure of lower base;The installation of lower moon pool cover, including the installation of lower moon pool cover accessory, the installation of lower moon pool cover and the installation procedure of dock pier;Tightness test.The ship moon pool cover installation process in the present application, while meeting the load requirement of upper moon pool cover, can also reduce the amount of steel of upper moon pool cover, and simplify the structure style of upper moon pool cover, facilitate the manufacture and disassembly of upper moon pool cover, while lower moon pool can meet the 10m water pressure requirement, and lower moon pool cover can meet the use of ship own crane and be hoisted from moon pool cabin to ship deck.

The embodiment of the invention provides an acoustic trunk device and an ice region ship. The acoustic trunk device comprises a trunk which is arranged on a bottom plate of a ship body in a watertight connection mode corresponding to the center line of the ship body; one or more sea opening holes are formed in a ship body bottom plate at the bottom of the trunk, and each sea opening hole is correspondingly provided with a sea short pipe and a supporting structure; a sea valve is arranged at the top of the sea short pipe, a maintenance box is arranged at the top of the sea valve, a lifting mechanism is arranged at the top of the maintenance box, and the lifting mechanism is fixed to a wall plate of the trunk through a support structure; the lifting mechanism comprises a lifting rod, and the end of the lifting rod can carry acoustic equipment to penetrate through the maintenance box, the sea valve and the sea short pipe and then stretch out of the ship body bottom plate to enter sea water for acoustic detection. According to the structure of the diversified acoustic detection trunk meeting the requirement for navigation in the ice region, the technical problem of the structure of the visual sea-dredging underwater detection acoustic trunk of the ship in the ice region is solved.

A stabilization assembly for use in deep water is provided, the assembly comprising a telescoping spar for anchoring within a moonpool of a floating support vessel, the anchoring mechanism including a gimbal-type joint secured within the moonpool, the spar being suspended by the gimbal-type joint during use to allow relative movement between the vessel and the spar.