231results about "Hull interior subdivision" patented technology

A vessel for transporting cargo by water comprises one or more propulsion devices with at least one air-breathing engine from the one or more propulsion devices disposed entirely above a surface of the water in a high-speed mode of operation. The least one air-breathing engine is configured to bleed airflow into a fluid circuit. The fluid circuit routes the bleed airflow to one or more fluid outlets disposed entirely below the surface of the water in the high-speed mode of operation. At least some of the one or more fluid outlets release the bleed airflow in the high-speed mode of operation generate a boundary layer along at least a portion of a hull of the vessel to reduce a skin friction drag thereof.

The application provides a method and system for controlling air-borne radioactivity in a control area cabin of a water surface nuclear power ship. A gradient negative pressure is formed in the control area cabin of the nuclear power ship, such as a nuclear power plant containment cabin, an auxiliary cabin, a pollution monitoring and decontamination cabin, and an access passage cabin, by using facilities such as an exhaust fan and a negative pressure compressor, so that the air-borne radioactivity generated during normal operation of the nuclear power plant is controlled. The application can better limit the range of air-borne radioactivity in the control area cabin, prevent the air-borne radioactivity from spreading and leaking to other cabins, and provide strong protection for the radiation safety of personnel on the nuclear power ship.

A method and system for fumigating a vessel includes delivering a fumigation agent to a cargo area of ​​the vessel. In particular, the vessel may be a roll-on / roll-off vessel. In such a system, a pneumatic system is provided for maintaining a selected minimum pressure differential between a selected area of ​​the vessel above the cargo area and the cargo area such that the pressure in the selected area is greater than the cargo area. A control system may maintain the pressure differential.

The application relates to the technical field of cabin sealing of a ship propulsion system, and provides a ship cabin sealing device and a ship, which comprises a sealing flange, a linear driving mechanism and a flange seat; the sealing flange is movably sleeved on a transmission main shaft of the ship, and the axis of the sealing flange is coincident with the axis of the transmission main shaft; one side of a sealing boss of the sealing flange facing the transmission main shaft is provided with a sealing surface, the sealing surface is used for being detachably connected with the end surface of the sealing boss; the sealing flange is connected with the moving end of the linear driving mechanism, the fixed end of the linear driving mechanism is connected with the flange seat, and the flange seat is used for being connected with the cabin wall fence of the ship; wherein the sealing flange has a first position and a second position; when the sealing surface is separated from the end surface of the sealing boss at the first position; and when the sealing surface is attached to the end surface of the sealing boss at the second position; the application conveniently realizes the sealing of the cabin, and improves the safety of the ship.

The present invention addresses the problem of providing a ship using methanol as fuel, which does not increase the equipment cost even if a methanol discharge tank is provided. When inert gas is supplied to the internal combustion engine (1) and the methanol supply system (MSS) by the inert gas supply unit (13), the methanol discharge system stops the discharge operation of the decompression discharge mechanism. When the inert gas is not supplied to the internal combustion engine (1) and the methanol supply system (MSS) by the inert gas supply unit (13), the decompression discharge mechanism is operated to discharge the gas in the reflux chamber (15) to the methanol discharge tank (17) at a pressure equal to or less than a predetermined pressure. The number of times the methanol discharge system supplies the inert gas to the internal combustion engine (1) and the methanol supply system (MSS) by the inert gas supply unit is determined such that the amount of residual methanol remaining in the internal combustion engine (1) and the methanol supply system (MSS) is less than a predetermined value.

A cargo mechanical chamber of a large LNG (liquefied natural gas) ship is characterized in that a watertight bulkhead divides the cargo mechanical chamber into a motor room and a liquid cargo equipment room, the motor room is a safe area, and the liquid cargo equipment room is a dangerous area. A part of space in the motor room is divided into an upper layer area and a lower layer area by the structural platform, and two mechanical air supply fans and a top-open mushroom type ventilator are fixed to the two ends of the top of the motor room respectively. The liquid cargo equipment room is internally provided with a cryogenic liquid cargo reprocessing device, a high-load compressor and a low-load compressor, the top of the liquid cargo equipment room is provided with a crane, two mechanical exhaust fans and three top-open bacteria type ventilators, the bottoms of the top-open bacteria type ventilators are connected with structural air ducts, and the structural air ducts extend downwards into the liquid cargo equipment room. According to the cargo mechanical room structure of the LNG ship, the utilization rate of a room is greatly increased, the site construction difficulty is reduced, and therefore the ship building cost is reduced, and a liquid cargo system is more reasonable in layout and higher in safety.

This invention discloses a support and reinforcement device for independent cargo holds, relating to the field of ship cargo hold technology. It includes a mounting base plate fixedly connected to the ship, two sliding brackets each with a cargo cover plate fixed to them, and a downward braking assembly for vertically locking a vertical sleeve fixed to a support column. A reinforcing arc plate is slidably mounted on the side of each cargo cover plate facing the mounting base plate. This invention uses two cargo cover plates and a support sleeve to form a cargo storage space. In extreme situations such as deck collapse, the protective top frame, supported by the support column and vertical sleeve, effectively protects the cargo cover plates. The drive slider in the retraction transmission assembly pushes against the tilting frame, causing the two tilting frames to slide towards each other and pull the two cargo cover plates together. This space contraction reduces the internal volume, significantly improving the pressure resistance of the cargo cover plates and ensuring effective protection of the cargo.

By reducing the number of hazardous areas where electrical equipment cannot be placed, the flexibility in placing electrical equipment is increased. [Solution] A fuel cell ship is equipped with a fuel cell that generates electricity through an electrochemical reaction of fuel, and supplies power from the fuel cell to the ship's equipment. The fuel cell ship is equipped with a fuel tank for storing fuel. A fuel filling port for filling the fuel tank is provided on the outer wall of the cabin.

The utility model discloses a marine engine transport ship, which relates to the technical field of shipbuilding industry and comprises a ship body and a hatch cover, the ship body comprises a head section, a cargo compartment section and a tail section which are integrally connected in sequence, and the cargo compartment section is provided with an engine placing cavity with a top opening. The engine containing cavity is higher than a marine engine needing to be transported, and the hatch cover is used for being in rigid sealing connection with the top of the cargo hold section so as to open or seal a top opening of the engine containing cavity. The rear enclosure bulkhead comprises a fixed enclosure bulkhead and a movable enclosure bulkhead, the bottom of the movable enclosure bulkhead is hinged to the top of the fixed enclosure bulkhead, and the movable enclosure bulkhead can be overturned to the horizontal position in the direction away from the engine containing cavity and can be overturned to make contact with the fixed enclosure bulkhead, the left enclosure bulkhead, the right enclosure bulkhead and the hatch cover and be in sealed connection with the fixed enclosure bulkhead, the left enclosure bulkhead and the right enclosure bulkhead; weather tight closing of the warehouse can be achieved, the engine transportation requirement is met, loading and unloading are convenient, and the hoisting requirement of a shipyard is effectively met.

Disclosed in the present invention is a hull form of a shallow-draft anti-rolling transport vessel. The hull form comprises a stern section, a cargo hold section and a bow section which are connected in sequence, wherein the length of the stern section does not exceed 30% of the overall length of a vessel; the length of the bow section does not exceed 25% of the overall length of the vessel; the stern section uses a multi-hull structure; the cargo hold section uses a monohull structure; the bottom of the cargo hold section is of a double-bottom structure; the bow section uses a catamaran structure; side flare structures are arranged at both sides of the stern section and the bow section; the stern section, the cargo hold section and the bow section share a main deck; and the main deck is a flat grillage. In the present invention, by means of reducing the draft, a wetted surface area and a wave height during high-speed navigation are reduced, thereby greatly reducing wave-making resistance; and the stability and seakeeping performance of the vessel under severe sea conditions are also taken into account.

The utility model relates to the technical field of rescue buoys, in particular to a rescue buoy with a storage function, which comprises a floating plate body and a storage bin integrally formed on the inner side of the floating plate body. The mounting sliding groove is formed in the bottom of the floating plate body, and a dorsal fin is detachably mounted in the mounting sliding groove; the mounting groove is formed in the upper end of the floating plate body, a universal screw hole is formed in the inner side of the mounting groove, and a mounting seat is mounted in the universal screw hole in a threaded mode; according to the rescue buoy with the storage function, the defects that in the prior art, a mounting structure of a recording tool is not provided, and the storage function is lacked are overcome.

The invention discloses a large-cabin-capacity drag suction dredger for improving the silt loading capacity and a using method of the large-cabin-capacity drag suction dredger, and belongs to the technical field of drag suction dredgers. A large-cabin-capacity drag suction dredger used for improving the silt loading capacity comprises a dredger body and further comprises a mud cabin, the mud cabin is fixedly arranged on the dredger body, and partition plates are fixedly arranged in the mud cabin and divide the mud cabin into a plurality of sub-cabin bodies; the track frame is arranged on the upper side of the mud cabin, and a first supporting rod is arranged between the track frame and the partition plate; a sludge discharge mechanism; the mud cabin is divided into a plurality of sub-cabin bodies through the partition plates, mud discharged into the sub-cabin bodies is not impacted by mud in other sub-cabin bodies, so that the mud entering the sub-cabin bodies has sufficient time to be stood and layered, silt and water are effectively separated, and before the mud is discharged into the sub-cabin bodies again through the mud discharging pipeline, the mud is discharged into the sub-cabin bodies through the mud discharging pipeline. The water pumping assembly is used for pumping the separated supernate, enough loading space is reserved for the follow-up mud discharging pipeline to continuously discharge mud, and the loading capacity and loading efficiency of the silt in the mud cabin are improved.

The utility model provides an air bag type ship. The air bag type ship comprises a ship body, an air compression module and an air bag module. The ship body is used for sailing on the water surface. The ship body is provided with a void compartment and a watertight compartment. The air compression module is located in the watertight compartment and is spaced from water; the air compression module comprises an air compressor and an air bottle; one end of the air bottle is communicated with the air compressor; the air compression module is located in a non-water-contact environment, sealing protection of the air compression module is achieved, the air compression module is prevented from making contact with water, and the performance of the air compression module of the air bag type ship is guaranteed. The air bag module comprises an air bag, the air bag is located in the void cabin and makes contact with water, and the air bag floats on the water surface; the air bag communicates with the other end of the air bottle, air enters or exits from the air bag under the action of the air compressor and the air bottle, the size of the air bag is changed, and therefore the buoyancy of the ship body is adjusted, posture adjustment of the air bag type ship is achieved, the air bag type ship can adapt to the depths of different river channels conveniently, and the environmental applicability of the air bag type ship is improved.

The invention discloses an LNG (Liquefied Natural Gas) ship and a ship bow binaural C-shaped fuel cabin arrangement structure and method thereof, which are characterized in that binaural C-shaped fuel cabins are arranged in a bow fuel cabin area, so that the space utilization rate of the bow fuel cabin area can be increased, and the fuel cabins arranged in the area are ensured to be large enough to load more green fuels; therefore, the ship can sail back and forth on the set route.

The application discloses a kind of multifunctional autonomous semi-submersible ship, it includes main deck, main deck includes main deck bow, main deck stern and main deck middle section;Main deck middle section is located between main deck bow and main deck stern;The side ballast tank, bottom ballast tank, power equipment room and pipe and control equipment room are equipped below main deck middle section;Power equipment room and pipe and control equipment room are equipped in the area surrounded by side ballast tank and bottom ballast tank;Control center and control room auxiliary equipment room are equipped below main deck bow and below main deck stern;Main deck bow is further equipped with front ballast tank, and main deck stern is further equipped with rear ballast tank;Main deck middle section includes upper photovoltaic panel and lower photovoltaic panel;The outer side of upper photovoltaic panel is equipped with high-temperature-resistant material layer.The application realizes the multifunctionalization and autonomy of semi-submersible ship, and the environmental protection degree is high.

The invention belongs to the technical field of ships, and provides a CO2 cold energy recovery and utilization system based on a deep sea storage mode, which comprises a CO2 cold energy recovery system, a CO2 cold energy utilization system and an ethylene glycol loading and unloading system. The space of the corner of the ship is ingeniously utilized, ethylene glycol is directly stored in the space between the outer surface of the CO2 storage tank in the cargo hold of the ship and the wall of the cargo hold, when CO2 is sealed in the deep sea, cold energy is recycled through heat exchange between the ethylene glycol aqueous solution and CO2, the ethylene glycol aqueous solution obtained after heat exchange is transported to the land, and the CO2 is stored in the cargo hold of the ship. The cold energy is utilized in the process of liquefying CO2, so that the waste of the cold energy is avoided. Meanwhile, when the CO2 transport ship sails in a no-load mode, ethylene glycol serves as ballast water, the steps of filling and discharging the ballast water are omitted, the low-temperature ethylene glycol in the cabin enables the interior of the CO2 storage tank to be continuously kept at the low temperature, the CO2 storage tank does not need to be pre-cooled during follow-up CO2 filling, and the CO2 transport efficiency and the operation efficiency during ship berthing are greatly improved.

A payload re-positioning system for a maritime vehicle that includes a hull having a first portion and a second portion. The maritime vehicle includes a payload disposed within the second portion. The first portion may include an impact zone and a compressible zone. The impact zone is arranged to engage a target external to the maritime vehicle. The compressible zone is arranged to reduce the initial length of the first portion to a compressed length in response to the impact zone engaging the target external, thereby reducing a distance between the payload and the impact zone.

A methods and systems of fumigating a vessel include delivering fumigant to a cargo area of the vessel. In particular, the vessel may be a roll-on / roll-off vessel. In such a system, an air pressure system is provided for maintaining a selected minimum pressure differential between a selected area of the vessel above the cargo area and the cargo area, such that pressure of the selected area is greater than the cargo area. A control system may maintain the pressure differential.

A fuel cabin structure and an ore sand ship, the fuel cabin structure comprises a fuel cabin, the fuel cabin is used for storing methanol and used as fuel of the ship, the fuel cabin is arranged in a side cabin of the ship and located at a position adjacent to a fuel oil cabin and / or a water ballast cabin in the side cabin; the isolation cabin is arranged on the outer periphery of the fuel cabin and located between the fuel cabin and other cabins of the ship. The fuel cabin is arranged in the side cabin, so that the space of the side cabin can be reused for storing methanol. Therefore, the space utilization rate of the ship can be increased, the influence of the arrangement of the fuel cabin on other equipment or cabins is avoided, and the design difficulty of the ship is reduced. Besides, due to the fact that the space of the side cabin is usually very large, the space of the fuel cabin can be increased by arranging the fuel cabin in the side cabin, more methanol can be stored in the fuel cabin, and then the endurance of the ship is improved.

The present disclosure relates to a method and device for optimizing navigation of a ship. The method according to an embodiment of the present disclosure may generate recommended navigation information about a navigation route of a ship, based on navigation plan information associated with a departure location and an arrival location of the ship, predict a boil-off gas (BOG) generation amount of the ship and a tank pressure value of the ship, based on the recommended navigation information, and obtain optimal navigation information associated with operation control of the ship, based on the BOG generation amount and the tank pressure value.

The present invention provides an insulating plate structure for use in cryogenic storage tanks of liquefied gas carriers, which has a reliable structure, adapts to ultra-low temperature thermal expansion and cold contraction, and provides multiple sealing guarantees. [Solution] The insulating plate structure used in the cryogenic storage tank of a liquefied gas carrier includes a plurality of insulating foam blocks 1 laid on the surface of the tank body, with expansion gaps 2 remaining between adjacent foam blocks, and a U-shaped fixing frame welded to the tank body provided within the gaps, the top of which presses the foam blocks on both sides together and combines adjacent insulating plates and is fixed to the surface of the tank body, the gaps are filled with an adaptable elastic filler 4, a joint block with an extrusion reset groove is provided above the U-shaped frame and fixed by adhesive, the U-shaped fixing frame has two shapes, a female threaded sleeve and a male threaded connecting sleeve, and is manufactured by processing PUF or EPS foaming, cutting, NDT detection, and multilayer composite, and is attached by mechanical crimping, elastic filling and butyl tape or TPO heat welding sealing. This invention is applicable to storage tanks in liquefied gas carriers such as LNG and ethane, and effectively resists thermal expansion and cold contraction at temperatures from -163°C to room temperature, preventing cracks and cold bridging, and achieving a highly reliable domestically produced enclosure.

A safety device for an ammonia tank on board a ship with a hull, the safety device being characterized in that there are at least two separate pipelines, arranged for ammonia gas, each comprising an inlet connected to the ammonia tank and each comprising a first hull outlet arranged below a waterline on the hull, such that the hull outlets, in any loading condition of the ship, at least open below the waterline, into the surrounding seawater outside the hull, and wherein each pipeline further comprises at least one respective safety valve arranged in the vicinity of the inlets and wherein each safety valve is arranged to change from a closed to an open position at a defined overpressure in the ammonia tank, such that in a fully or partially open position of the safety valves, the ammonia gas will be led from the ammonia tank via the pipelines and out via the first hull outlets to the surrounding seawater around the hull and dissolved into aqueous ammonia, such that ammonia gas is not released into the atmosphere around the ship.

The cargo hold pipe tunnel structure comprises an inner bottom plate and an outer bottom plate which are arranged at intervals in the height direction, a pipe tunnel opening is formed in the inner bottom plate, a left lower side plate and a left upper side plate are arranged on the left side of the pipe tunnel opening, and a right upper side plate and a right lower side plate are arranged on the right side of the pipe tunnel opening. The upper top plate, the upper left side plate, the lower left side plate, the outer bottom plate, the lower right side plate and the upper right side plate jointly define a pipe tunnel channel, a pipe tunnel partition plate is fixedly installed in the pipe tunnel channel, and a load reducing hole is formed in the middle of the pipe tunnel partition plate. Reinforcing pieces are arranged between the upper left side plate and the lower left side plate and between the upper right side plate and the lower right side plate. Compared with the prior art, the pipe tunnel structure is simple in form and convenient to construct, the pipelines and the valves of the pipelines can be intensively arranged in the pipe tunnel channel, the proportion of the pipelines to the cargo hold volume is reduced, sailors can conveniently use and overhaul the pipe tunnel structure, the loading and unloading efficiency and the pipeline safety are improved, and the problem that maintenance is inconvenient in the prior art is solved.

The application discloses a container ship ballast water tank vent pipe arrangement chamber and a container ship. The chamber is arranged between a cargo hold transverse bulkhead and a hatch coaming. The bottom plate of the chamber is the top plate of the cargo hold transverse bulkhead. The side walls of the chamber are watertight walls. One of the side walls of the chamber is arranged at the junction of the cargo hold transverse bulkhead and the upper deck. The vent pipes of the container ship pass through the bottom plate of the chamber. The outlets of the vent pipes are arranged in the chamber. The junction side wall is provided with a water overflow hole. The container ship comprises the vent pipe arrangement chamber. The vent pipe arrangement chamber avoids opening holes in the upper deck made of high-strength crack arrest steel. The opening difficulty is reduced, the strength of the main deck is ensured, the possibility of overflow water flowing into the cargo hold along the top plate of the cargo hold transverse bulkhead is reduced, and the transportation environment of the container ship is ensured.

This invention relates to the field of floating platform technology, and more particularly to a sandwich-core thin-walled modular floating platform and its construction method. The platform includes a coal gangue lightweight aggregate UHPC floating module, a coal gangue lightweight aggregate UHPC bulkhead, and a damping buffer. The coal gangue lightweight aggregate UHPC floating module has a sealed cavity inside. The coal gangue lightweight aggregate UHPC bulkhead is sealed and installed inside the sealed cavity, dividing the sealed cavity into multiple mutually sealed compartments. The damping buffer connects two adjacent sealed compartments and includes a fixed cylinder, a first movable plug, and a first elastic element. The first elastic element connects the fixed cylinder and the first movable plug. The fixed cylinder is sealed and fixedly connected to the coal gangue lightweight aggregate UHPC bulkhead. The first movable plug is slidably sealed to the inner wall of the fixed cylinder through a first sealing ring fitted around its outer periphery. This invention can improve the anti-rolling and anti-overturning capabilities of the floating module.

The application relates to a moving-coil low-frequency sound source active pressure compensation closed-loop control system and method, which measures the amount of the sound source radiation surface deviating from the balance position through a displacement sensor, adjusts the gas flow direction, controls the gas amount in the sound source radiation cavity space, always maintains the radiation surface at the balance position, realizes active compensation control of the gas pressure, and makes the gas pressure in the sound source radiation cavity always equal to the ambient water pressure. The application realizes the balance between the pressure in the internal cavity of the sound source radiation surface and the external water pressure, and realizes closed control of pressure regulation through the gas circulation mode.

The application discloses a kind of multi-navigation state high-speed full sea area underwater vehicle, belong to sea engineering equipment field, solve the navigation state switching mode breathing time of vehicle, water inlet, drainage speed slow and the problem of slow navigation state switching, it includes main cabin, main propeller, balanced side wing and gliding board unit, the main propeller is set in main cabin tail, the balanced side wing is set in main cabin tail two sides, the balanced side wing is in setting connection mechanism, the balanced side wing is connected with main cabin by connection mechanism, the gliding board unit is set in main cabin bottom, the main cabin is provided with perfusion regulating system. It is widely used in the field of oceanic scientific research.

A liquefied gas transport vessel according to one embodiment of the present disclosure includes: an engine room positioned at a stern section, which is behind a cargo compartment that stores liquefied gas; a stern facility positioned at the stern section, outside the engine room; a bow facility positioned at a bow section, which is in front of the cargo compartment; an under deck passage extending in a front-rear direction, below an upper deck of the cargo compartment; an independent zone that is independent from the engine room, and includes a cargo compartment side opening that opens to the under deck passage and a stern section side opening that opens to a stern upper area on the upper deck of the stern section; and an electric cable connecting the bow facility and the stern facility, passing through the under deck passage, the independent zone, and the stern upper area.

The invention relates to the field of ships and ocean engineering, in particular to a roll-on and roll-off integrated multipurpose transport ship for transporting a whole set of high-power wind turbine generator equipment, which mainly comprises a ship body, the ship body is sequentially provided with a bulwark, a cargo deck, a through-type cargo hold, an inner bottom and a ship bottom from top to bottom, and the through-type cargo hold is arranged in the ship body. The through-type cargo hold is used for loading wind turbine generator host equipment, the wind turbine generator host equipment comprises a cabin, a hub, a transformer and a transmission chain, a hatch of the through-type cargo hold is located in the middle of the main deck, a through-type hatch cover is detachably installed above the hatch of the through-type cargo hold, and the top of the through-type hatch cover is flush with the top of the cargo deck; the cargo deck is used for loading a tower drum section, a single pile, a transition section and blades of wind turbine generator equipment; two cranes are arranged on a starboard of the main deck and used for hoisting and transferring wind turbine generator main machine equipment, a tower drum section, fan blades and a single pile with light weight.

The invention discloses a methanol fuel cabin arranged in a container cargo hold, which is matched with the cargo hold of a ship and comprises a methanol fuel cabin, the top boundary of the methanol fuel cabin is arranged below the minimum ballast water line of the ship, and an outer bottom plate of the ship is directly used as the bottom boundary; a methanol fuel cabin main body structure which is always surrounded by seawater or is lower than the sea surface is formed, when the methanol fuel cabin leaks, methanol fuel can be directly diffused to the seawater and dissolved in the seawater, the potential internal leakage accumulation risk is converted into controllable external diffusion so as to improve the safety, meanwhile, an isolation void cabin is not arranged at the bottom of the methanol fuel cabin, and the reliability of the methanol fuel cabin is improved. Structural compactness and efficient space utilization are achieved, the capacity of the methanol fuel cabin is increased, and the overall weight of a ship can be reduced.