92 results about "Moon pool" 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.

The invention provides a moon pool bottom cover in-dock tightness test method and device, and the method comprises the following steps: S1, drawing an FRXX rib bit line on a port or a starboard of a dock bottom, the FRXX rib bit line being a center line in the width direction of a moon pool bottom cover; s2, the module vehicle is hoisted to the dock bottom, and steel plates and rubber sheets are laid in sequence; s3, the watertight tool box is hoisted to the module vehicle; s4, the height of the module vehicle is reduced to 1150-1200 mm, and the module vehicle enters along an FRXX rib position line; s5, the module vehicle generates lifting force to jack the watertight tool box, and a sealing rubber strip on the upper surface of the watertight tool box tightly presses the moon pool bottom cover to form a closed water pressure space; and S6, applying water pressure to the watertight tool box until the tightness test step is completed. The problems that the installation and debugging efficiency is low, and single-point stress is uneven are mainly solved. The moon pool bottom cover is directly transported, jacked and installed through the module vehicle, it is ensured that a tightness test is completed before the moon pool bottom cover is undocked, the moon pool bottom cover is completely installed, the precision meets the requirement, and the shipbuilding period is shortened.

The invention relates to a single-point mooring system, in particular to a design method of a hydraulic locking device of an FPSO single-point mooring system, which comprises the following steps: S1, mounting a guide frame assembly; s2, the sliding shoe assembly is installed in the guide frame assembly; s3, the supporting assembly is assembled; s4, the fixing assembly is installed on the supporting assembly; s5, the locking assembly is installed between the guide frame assembly and the supporting assembly; s6, the supporting assembly is positioned and installed on the deck; s7, tie-back of the buoy from the mouth of the moon pool; s8, releasing the buoy from the mouth of the moon pool; the device has high efficiency, flexibility, stability, safety, strong adaptability, durability, reliability, safety and maintainability, is optimized in structure and easy to operate, and provides an efficient, stable and safe solution for mooring operation in ocean engineering.

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 present invention relates to the technical field of unmanned ship navigation control systems, in particular to an unmanned scientific research ship equipped with an intelligent navigation control system, including an unmanned ship body. The unmanned ship body is successively provided with a bow peak tank, an instrument and equipment compartment, a moon pool compartment, a rear battery compartment, an engine room, and a stern compartment from the bow to the stern. A front battery compartment is provided below the instrument and equipment compartment, and fuel tank compartments are provided on both sides of the front battery compartment. It also includes an intelligent navigation control system; and a mother ship / shore-based remote control monitoring platform for issuing commands to the intelligent navigation control system, and receiving and displaying and intervening in the monitoring data of the dual-mode semi-submersible unmanned ship in real time; a safety environment perception unit is constructed to ensure the long-term autonomous, safe and stable operation of the integrated carrier platform under various sea conditions in the deep sea and ocean, and can realize the autonomous avoidance of marine obstacles to ensure the navigation safety of the unmanned ship.

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 invention discloses a floating breakwater based on a wave flow conversion effect. The floating breakwater comprises a plurality of partition boxes, and a wave flow conversion assembly is fixedly arranged between every two adjacent partition boxes; the wave flow conversion assembly comprises transition sections, a circular channel and blades, the two transition sections are arranged at the two ends of the partition box, and the upper surface and the lower surface of each transition section are each provided with a floating structure; a circular channel is formed in the transition section, blades are arranged in the circular channel, and the blades are connected with a generator set arranged on the upper surface of the partition box; the area between the two transition sections serves as a moon pool, and the bottom of the moon pool is communicated with an external fluid domain; by means of the gathering effect of the transition section, waves around the floating breakwater are gathered and enter the moon pool through the blades via the circular channel, the circular channel is used for converting the waves into water flow and achieving wave flow conversion, the water flow in the circular channel drives the blades to rotate, then the generator set is driven, and kinetic energy of the water flow is converted into electric energy. The wave absorbing device can achieve conversion from waves to water flow, and wave absorbing is achieved.

The embodiment of the invention provides an offshore platform mining equipment transfer system. The offshore platform mining equipment transfer system comprises a first ore collecting car, a second ore collecting car, a transfer platform, a transfer gantry crane and traction equipment. The transfer platform, the first mine collecting car and the second mine collecting car are arranged below a main deck of the offshore platform; the transfer platform is located between the first ore collecting car and the second ore collecting car along the width direction of the offshore platform, and the transfer gantry crane is arranged on the upper side of the transfer platform in the gravity direction and used for hoisting the first ore collecting car and the second ore collecting car to the surface of the transfer platform. The traction equipment is detachably connected to the first mine collecting car or the second mine collecting car, and the first mine collecting car or the second mine collecting car is lowered to an underwater target position through the moon pool. The problems that in the prior art, the overall gravity center of an offshore platform is high, and the stability and the wind resistance of the platform are poor are solved.

The invention relates to the technical field of submarine cable maintenance ships, and particularly discloses a submarine cable maintenance ship and an operation method thereof.The submarine cable maintenance ship is provided with a cable disc and a submarine cable maintenance device on a deck, the cable disc can selectively store submarine cables or stones, the deck is provided with a moon pool, and the stone throwing device comprises a lifting assembly and a stone throwing assembly; the lifting assembly is detachably installed in the moon pool, the riprap assembly comprises a plurality of riprap pipes connected end to end, the lifting assembly is used for driving the riprap pipes to ascend and descend, and when the cable tray stores the stones, the bucket machine is used for grabbing the stones in the cable tray to the riprap pipes. A cable disc is arranged to selectively store submarine cables or stones, a moon pool is arranged on a deck, a lifting assembly is installed on the moon pool, a stone throwing pipe of a stone throwing assembly is driven to ascend and descend through the lifting assembly, the stones in the cable disc are grabbed to the stone throwing pipe through a bucket machine, the stones are thrown to the seabed through the stone throwing pipe, and therefore the requirements for submarine cable overhauling and stone throwing operation are met; and the riprap precision of the deep operation water depth is improved, and stone waste is reduced.

The invention relates to an umbilical cable terminal, in particular to an underwater installation method for an oversized umbilical cable terminal, which comprises the following steps: S1, carrying out operation preparation for laying the tail end on a deck; s2, a crane hoists the umbilical cable terminal UTA out of a cabin; s3, enabling the umbilical cable terminal UTA to pass through a cone pulley; s4, hanging the umbilical cable terminal UTA in the moon pool; s5, the tail end of the umbilical cable terminal UTA is lowered in place; according to the method, the umbilical cable terminal UTA is transferred out of a cabin by connecting the crane with the bending limiting device out-of-cabin rigging, and then cone pulley passing operation is carried out under the cooperation of the crane and the pull-back winch; and the load is transferred to the winch from the crane, the winch is connected with the hump rigging on the bending limiting device through the sling reserved on the UTA fixing piece, and finally UTA in-place is completed under the cooperation of the crane, the winch and a ship navigation bridge. The whole construction team is coordinated and matched, most work is completed mechanically through the steps, the operation risk is reduced, and operation can be completed efficiently.

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 application relates to the technical field of ocean engineering equipment, and discloses a launching device of an underwater vehicle and a control method thereof. The launching device of the underwater vehicle comprises a first lifting group and a second lifting group. The first lifting group comprises a plurality of first pile legs which are arranged at intervals along a first direction, the first pile legs are slidingly arranged on one side wall of a moon pool along a vertical direction, and the lower ends of the first pile legs are rotationally provided with crosspieces. The second lifting group is arranged at intervals along a second direction with the first lifting group, the second lifting group comprises a plurality of second pile legs which are the same in number as the first pile legs, the second pile legs are arranged at intervals along the first direction, the second pile legs are slidingly arranged on the other side wall of the moon pool along the vertical direction, and the lower ends of the second pile legs are provided with supporting plates. One crosspiece can be lapped on one supporting plate, so that the plurality of crosspieces form a bearing surface capable of bearing the underwater vehicle. The launching device of the underwater vehicle is accurate in positioning, stable in operation, efficient and convenient, and can adapt to complex marine environments.

This application discloses an offshore floating semi-submersible platform and an offshore power generation system. The offshore floating semi-submersible platform provided by this application includes a platform body equipped with wind turbine components and photovoltaic components to achieve wind and solar complementary power generation. A heave assembly is provided below the platform body, which includes at least two different sizes of heave plates and forms at least two moon pool structures, which together constitute a damping coupling system. The differentiated heave plates provide a graded response to broadband waves, and the moon pool structure adds additional mass and radiation damping, thereby continuously consuming wave energy, significantly reducing the platform's heave response, and improving operational stability. The photovoltaic components include fixed photovoltaic panels and telescopic photovoltaic panels. The fixed photovoltaic panels are located on the top surface of the platform body, and the telescopic photovoltaic panels can switch between a retracted state and an extended state, effectively increasing the photovoltaic power generation area and improving power generation efficiency.

The invention discloses a tuned mass damping device for a cylindrical FPSO (floating production storage and offloading), and belongs to the technical field of damping shock absorption, the tuned mass damping device comprises an FPSO main body, an annular sleeve and a damper, the annular sleeve is arranged on the outer side of the FPSO main body, the damper is arranged between the FPSO main body and the annular sleeve, the FPSO main body comprises a platform moon pool, a conical heaving plate and a first hanging lug, and the first hanging lug is arranged on the platform moon pool. The conical heaving plate is arranged below the platform moon pool, and the first hanging lug is arranged above the conical heaving plate. According to the tuned mass damping device for the cylindrical FPSO, the waterplane width of the whole structure can be increased, and therefore the swinging motion of the FPSO body is further restrained.

The invention discloses a semi-submersible floating fan foundation with moon pool structures, which comprises a plurality of buoys, the center of each buoy is of a hollow moon pool structure, the top of each buoy is provided with a cover plate used for sealing the top of each moon pool structure, and a closed air cabin is formed above the moon pool; the buoys are supported and connected through supporting structures to form a foundation platform. The closed air cabins are formed above the moon pool, and when the buoy swings, air in the air cabin on one side is compressed to generate positive pressure, negative pressure is generated on the other side to generate restoring torque, so that the swinging amplitude of the foundation platform is further reduced through the restoring torque while the moon pool has the characteristics of itself, and meanwhile, the swinging amplitude of the foundation platform is further reduced through the restoring torque. The vibration water column characteristic of the moon pool and the aerodynamic characteristic of the air cabin are combined with the dynamic characteristic of the structure of the semi-submersible fan foundation, so that the inhibition capacity on low-frequency and high-frequency waves is enhanced, the widely applicable stabilization effect is achieved, and the stability of a foundation platform is further improved.

The utility model belongs to the technical field of deepwater detection, and particularly relates to a liftable fin with a moon pool function, which comprises a moon pool bin, and further comprises a fin body, a positioning ring, a positioning sheet, a sliding rod, a connecting ring, a spring, a positioning seat, a positioning cone and a scientific investigation instrument which are arranged on one side of the moon pool bin, the fin plate body is fixedly installed on the inner surface of the base, the locating ring connected with the locating piece in an attached mode is further fixedly installed on the inner surface of the fin plate body, and the surface of the locating piece is further connected with the sliding rod in a sliding mode. According to the scientific investigation instrument placing device, the scientific investigation instrument can be placed more stably, the phenomenon that the body is affected by shaking is avoided, meanwhile, the body can be buffered through a sliding rod and a spring, and the damage situation can be effectively reduced.

The application provides a bionic groove structure of an elongated moon pool in a ship and a parameter determination method and device thereof, and relates to the technical field of ship and ocean engineering hydrodynamics. The bionic groove structure is uniformly distributed on a front end wall surface of the elongated moon pool and / or a transition area where the front end wall surface of the elongated moon pool is connected to a ship bottom, the elongated moon pool is arranged in a middle part of a ship body, and the elongated moon pool has a front end wall surface, a rear end wall surface, left and right side walls and a bottom opening area. The bionic groove structure is arranged in an extension direction along a flow along a longitudinal direction of the ship, and the bionic groove structure is symmetrically arranged along a transverse direction of the elongated moon pool, and a separation baffle is formed between adjacent bionic groove structures; the bionic groove structure is used for dividing and guiding local flow into a front end area of the elongated moon pool when the ship is sailing; and the scheme provided by the application can effectively suppress wave making in the elongated moon pool, and optimal parameters are determined through the parameter determination method.

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 utility model discloses an unmanned ship moon pool protection device and an unmanned ship, and relates to the technical field of unmanned ship surveying and mapping, and the protection device comprises a measuring equipment fixing plate, a moon pool protection assembly, a moon pool barrel and a butterfly screw; the moon pool protection assembly comprises fixing screws, supporting frameworks, rotating shaft sheaths, rotating shaft cavities, fixing frames and three-proofing cloth, the supporting frameworks and the two ends of openings of the fixing frames are rotationally connected with the rotating shaft cavities, the supporting frameworks are alternately arranged between the two fixing frames in a long-short mode, and the rotating shaft sheaths and the rotating shaft cavities are connected through the fixing screws; the three-proofing cloth is arranged on the outer sides of the supporting frameworks, and diversion trenches are formed between the supporting frameworks. The measuring equipment fixing plate is arranged at the top of the moon pool barrel, screw holes are formed in corresponding points of the fixing frame and the measuring equipment fixing plate, and the moon pool protection assembly is connected with the measuring equipment fixing plate through butterfly screws and the screw holes. The problems that a traditional moon pool protection device is not provided with a flow guide design, the advancing resistance of a ship body is large, and the occupied space is large when the device is not used are solved.

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.

The invention relates to the technical field of ocean engineering, in particular to an FPSO single point mooring system hydraulic locking device and an installation method thereof.The FPSO single point mooring system hydraulic locking device comprises a guide frame assembly fixedly connected to the surface of a ship deck around a moon pool opening, a sliding shoe assembly is arranged in the guide frame assembly in a sliding mode, and a locking assembly is hinged to the top face of the sliding shoe assembly; the sliding shoe assembly drives the locking assembly to slide back and forth along the guide frame assembly; the locking assembly comprises a locking arm, the end, matched with the buoy, of the locking arm is a locking end, and the other end of the locking assembly is a connecting end. The connecting end is hinged to the support assembly. Due to the design of the guide frame assembly and the guide assembly, the stability and accuracy of the locking arm in the sliding process are guaranteed, and potential safety hazards caused by shaking or deviation are avoided. And meanwhile, the stability of the device in the locking state is further enhanced through the arrangement of the fixing assembly.

The utility model relates to the technical field of unmanned ships, in particular to a bimodal semi-submersible unmanned ship with an integrated turbulent flow observation system, which comprises an unmanned ship body, the unmanned ship body comprises a fore peak, an instrument and equipment compartment, a moon pool compartment, a rear battery compartment, a cabin, a stern compartment, a front battery compartment and a fuel tank compartment, a ballast water pump and a liquid level sensor for detecting the liquid level in the two front ballast tanks are respectively arranged in the two front ballast tanks, an integrated turbulent flow observation system integrated with a turbulent flow profile observation instrument, a lowering type acoustic Doppler ocean current profiler and a temperature-salinity-depth instrument is arranged in the moon pool tank, and a lifting mechanism is arranged above the cabin. An automatic opening and closing type cover plate is arranged at the bottom of the moon pool cabin, the device further comprises a controller, by carrying an integrated turbulence observation system, the problem that small-scale turbulence observation frequency is insufficient or time resolution is low is solved, and synchronous observation of turbulence and thermohaline depth / flow is achieved.

The invention discloses a water surface-underwater cooperative operation fire-fighting detection unmanned ship system and a fire extinguishing method, and the system comprises an unmanned ship body, an open moon pool located at the gravity center position of the unmanned ship body, an ROV located in the open moon pool, a retractable winch connected with the ROV, and a fire-fighting and fire-extinguishing module and a detection integrated module arranged above the unmanned ship body. A spray pump is arranged at the rear end; according to the unmanned ship system, through the arrangement of the middle moon pool and the portal water cannon, the ROV is protected against direct sea wave impact in the retracting and releasing process, the recoil force of the high-pressure water cannon is balanced, and the stability of the unmanned ship is guaranteed; according to the fire extinguishing method provided by the invention, the ROV and the water monitor cooperatively strike, the ROV locks a fire source and then returns coordinates in real time, the mother ship control system automatically adjusts the water monitor according to the coordinates to carry out precise fire extinguishing, fire-fighting operation is upgraded to fixed-point clearing from previous surface covering, and the fire extinguishing efficiency is greatly improved.

The present disclosure relates to the technical field of mold design, and particularly relates to a moon pool system experimental device. The present disclosure provides a moon pool system experimental device, which comprises a moon pool system cover body, a transducer assembly part and a plurality of guide rail limiting rods, the transducer assembly part comprises an equipment mounting box body and a platform connecting part, the equipment mounting box body is movably connected with the platform connecting part, at least one equipment mounting position and a threading hole are arranged on one side of the equipment mounting box body facing the moon pool system cover body, the moon pool system cover body is connected with the platform connecting part through a plurality of guide rail limiting rods, the guide rail limiting rod has a limiting state and a releasing state, in the limiting state, the guide rail limiting rod limits the equipment mounting box body from being separated from the platform connecting part, and in the releasing state, the equipment mounting box body is free to be separated from the platform connecting part. Through the technical scheme of the present disclosure, the use of a lifting fin system operation for experiment can be avoided, the experimental requirements of low cost and high stability can be realized, and experimental data can be collected.

The present invention relates to the technical field of ships, and in particular to a moonpool structure of a polar research ship, which includes a moonpool. A plurality of reinforcing members are fixedly connected to the moonpool. The moonpool is provided with a first housing. The first housing is provided with a filter screen and a heating member. The first housing is fixedly connected and communicated with a second housing. The filter screen on the first housing is used to filter the seawater entering the second housing. The second housing is fixedly connected and communicated with a conduit. A sliding push rod is hermetically slidably arranged in the conduit. The conduit and the sliding push rod are both provided with round holes for installing one-way valves. The second housing is fixedly connected with a first power member. Through the operation of the first power member, the seawater in the moonpool is driven to slowly rotate. The surface shear flow caused by the rotation can destroy the boundary layer formed under static water conditions and delay the formation of the stable low-temperature interface required for ice crystal nucleation. Coupled with the collection of broken ice by the filter screen in the first housing, the stability and safety of the lowered test equipment are ensured.

The utility model relates to the technical field of ship engineering, in particular to an angle-adjustable ship moon pool drag reduction device. Comprising a ship body, a moon pool, a bottom plate, a first hatch, a hydraulic rod, a baffle, a sliding groove, a mounting plate, a servo motor, a screw rod, a sliding block, a sliding groove and the like. The height of the anti-drag plate can be adjusted, the anti-drag plate is arranged at the key position of water flow, and it is ensured that a ship can keep relatively low sailing resistance under various sea conditions.

The invention discloses a suspension device for a BOP trolley, which belongs to the technical field of ocean platform deck equipment and comprises a trolley adapter with openings on two sides, a support plate is arranged at the bottom of the trolley adapter, an adapter central sleeve is arranged in the middle of the trolley adapter, and a pipe string nipple is arranged in the adapter central sleeve in a replaceable manner. The mud recovery pipe string or the casing pipe string can be hung and moved on the deck surface of the moon pool, operation is easy, and reliability is high; one side of the trolley adapter is provided with a [-shaped space for accommodating the subsea pump, and the [-shaped space can be used for storing and transporting the subsea pump or other underwater equipment with the same size; after the walking board is installed on the U-shaped space, the adapter can be used as an operation platform, manual operation in a moon pool deck area can be facilitated, the suspension device is simple in overall structure, easy to operate and suitable for various operation working conditions, the equipment utilization rate of the BOP trolley is improved, and the drilling operation time is saved.

The present invention discloses a deployment and recovery system and method for a surface blowout preventer combined with a subsea blowout preventer group, which relates to the technical field of deployment and recovery systems, and includes a support frame, wherein the support frame is symmetrically arranged, and the top of the support frame is fixedly connected to a ring frame, and the opposite side of the support frame is movably connected to a suspension plate through a rotating shaft, and the top of the support frame is provided with a driving mechanism, and one end of the driving mechanism is movably connected to the rotating shaft of the suspension plate. The present invention uses a servo motor to drive a threaded rod to rotate through the drive mechanism, driving the rack to move inside the support frame, thereby driving the gear to rotate inside the support frame, and then driving the drive rod to rotate with the center of the ring frame as the axis, thereby driving the suspension plate to move in an upward arc until the suspension plate rises to the highest point of the ring frame, thereby facilitating the transportation of the surface blowout preventer from the periphery of the moon pool to directly above the moon pool, thereby facilitating the lowering of the surface blowout preventer to a suitable installation position.

The invention relates to the technical field of coast and offshore engineering, in particular to a double-arc box type floating breakwater with a built-in moon pool. A square moon pool penetrating through the breakwater in the vertical direction is arranged in the breakwater, and the moon pool divides a box body structure into a front floating box and a rear floating box which are symmetrical front and back; the front buoyancy tank is located on the wave head side of the buoyancy tank body, and the rear buoyancy tank is located on the wave back side. A circular-arc-shaped wave gathering plate is arranged on the head wave side of the front buoyancy tank, the wave gathering plate and the front buoyancy tank structure are connected in a nested mode to form an inwards-concave arc-shaped structure in the vertical direction, a plurality of flow guide holes penetrating to the moon pool from the head wave side are formed in the vertical center position of the structure, the flow guide holes are arranged at equal intervals from top to bottom, and the opening diameters of the flow guide holes are the same; an arc-shaped wave guide plate is arranged on the back wave side of the rear buoyancy tank, is in a semi-cylindrical shape and is connected with the back wave side of the rear buoyancy tank in a nested mode to form a concave arc-shaped structure in the horizontal direction.