79 results about "Bilge" patented technology

The invention relates to the field of remote control, and discloses an intelligent bucket throwing operation method and system for remotely controlling a grab ship unloader, which are used for realizing intelligent bucket throwing operation for remotely controlling the grab ship unloader. The intelligent bucket throwing operation method for remotely controlling the grab ship unloader comprises the steps of generating a full-state expected trajectory containing position, speed and acceleration information, ensuring that the trajectory is smooth and accurate, constructing a nonlinear model prediction controller, integrating a nonlinear disturbance observer, effectively estimating and compensating wind disturbance and unmodeled dynamics, and enhancing the anti-jamming capability of the system. A discrete element method is utilized to simulate interaction of material particles, and in combination with bilge topographic data, spatial distribution after material throwing is accurately predicted, system stability is monitored in real time, and a control instruction is dynamically adjusted. The precision, the stability and the efficiency of bucket throwing operation of the grab ship unloader are remarkably improved, the operation difficulty and the labor cost are reduced, and the grab ship unloader can well adapt to complex working conditions.

The invention belongs to the technical field of robots, and discloses a ship and bridge dual-purpose cleaning robot and a cleaning control method. The main body structure comprises a resistance reduction-propulsion integrated power system jointly formed by a fairing and a vector nozzle, a grading collaborative cleaning module jointly formed by a cavitation water jet module and a grinding cleaning module, an adsorption system and an auxiliary supporting module, and the auxiliary supporting module comprises a plurality of auxiliary supporting mechanical arms and is used for achieving the purpose of cleaning the water jet in a cleaning mode and an underwater swimming mode. By adjusting the position of a supporting point in real time, the device adapts to structural changes of ribs and bilges of a hull and is used for being matched with an adsorption system and a vector sprayer to form an alternate-cooperative dual-working mode, and different operations of vertical climbing and surface-changing movement are assisted to be completed. The device has multiple purposes, can continuously work on a ship body and a bridge pier, does not need to be modified or replaced by multiple machines, and reduces the comprehensive use cost. And meanwhile, multi-machine cooperation is supported, an efficient cluster cleaning mode is formed, and the operation efficiency and economical efficiency are further improved.

The invention provides an intelligent monitoring linkage control integrated processing method and system for methanol-containing bilge water, and the method comprises the steps: deploying a collection terminal integrated with various types of sensors at a ship position, collecting the navigation state, sea condition, bilge water quality and equipment operation parameters, and employing a high-frequency sampling mode to achieve the intelligent monitoring linkage control of the bilge water; sorting historical related data, classifying and marking according to a navigation state, a sea condition grade and a bilge water load interval, extracting methanol concentration characteristic parameters, and performing data cleaning to form a working condition and concentration associated characteristic library; the method comprises the following steps: training an LSTM (Long Short Term Memory) model according to working conditions and a concentration associated feature library, inputting multi-source real-time parameters, outputting a methanol concentration change trend and a pre-judgment result, automatically starting retraining when the model pre-judgment precision does not reach the standard, generating a dynamic control threshold value based on the model pre-judgment result and the real-time working conditions, and adjusting a threshold value interval by adapting to different working conditions. And the association processing equipment carries out real-time load matching processing intensity.

The invention belongs to the technical field of ship body structures, and discloses a ship body double-layer bottom structure and an installation method thereof, in the installation process of the ship body double-layer bottom structure, when a worker assembles an inner bottom plate body, a ship outer plate, a solid rib plate and a rib, installation of a slow-installation cover plate can be delayed, and when the structure is assembled, installation of the slow-installation cover plate is facilitated. In addition, after installation of the inner bottom plate body, the ship outer plate, the solid rib plate and the ribs is completed, a worker can also firstly install other equipment in the bilge of the ship body, due to the fact that the slow installation cover plate is not installed yet, the large operation space is achieved at the moment, and after installation of the structure is completed, the worker can conveniently install the inner bottom plate body, the ship outer plate, the solid rib plate and the ribs. The buffer cover plate is installed in the containing groove and fixedly connected with the ship outer plate, the groove wall of the containing groove, the solid rib plate and the ribs at the same time, due to the fact that the surface of the buffer cover plate is flush with the surface of the inner bottom plate body, the space above the inner bottom plate cannot be occupied, and more installation space can be reserved for a liquid tank or cabin equipment.

The invention relates to the field of ships, in particular to a right-angle bilge reinforcing structure suitable for a low-speed floating body and a construction method of the right-angle bilge reinforcing structure. The right-angle bilge reinforcing structure comprises a reinforcing piece and a supporting piece, a broadside plate and a bottom plate of a low-speed floating body are vertically arranged, the supporting piece is located on the side, away from the bottom plate, of the broadside plate, the supporting piece and the bottom plate are an integral flat plate, and the broadside plate is vertically welded to the integral flat plate and forms an inverted-T-shaped structure with the integral flat plate; the reinforcing piece is arranged between the broadside plate and the supporting piece, and the end, away from the joint of the broadside plate and the supporting piece, of the reinforcing piece is welded to the broadside plate and the supporting piece. The supporting piece extends outwards from the bottom plate of the floating body, so that the bilge forms an inverted-T-shaped structure, the broadside plate and the bottom plate are convenient to position and weld, the overall process is simple, meanwhile, the supporting piece and the broadside plate form a reinforcing area, the reinforcing piece is welded in the area, and the connecting strength of the right-angle bilge is greatly improved.

This invention relates to the field of marine technology, specifically disclosing a bilge structure for an oil spill recovery vessel, including an outer bilge plate, ribs, a sealing plate, a lower bilge elbow plate face panel, a lower bilge elbow plate web, and an upper bilge elbow plate; the two ends of the outer bilge plate are respectively connected to the side plates and the bottom plate, and ribs are provided on the inner side of the outer bilge plate away from the bottom plate; the ribs are located on the inner side of the bottom plate, and the ribs are provided with an inner bottom plate and an inner bottom folded edge plate, forming a groove between the inner bottom folded edge plate and the outer bilge plate; the sealing plate is located above the groove; the lower bilge elbow plate face panel is located at the bottom of the sealing plate; the lower bilge elbow plate web is located in the groove; the upper bilge elbow plate is located above the lower bilge elbow plate face panel and is used to connect the lower bilge elbow plate face panel and the ribs; wherein, the outer bilge plate, the inner bottom folded edge plate, the sealing plate, the lower bilge elbow plate face panel, and the lower bilge elbow plate web together form a closed structure, and the closed structure is filled with filling material. This invention eliminates the bilge grooves in the prior art, thereby improving the efficiency of residual oil extraction and cabin cleaning.

The invention discloses an installation method of a large LNG ship bilge keel and the large LNG ship bilge keel. The installation method sequentially comprises the steps that a streamline test is conducted on a large LNG ship to obtain a plurality of streamlines; selecting a streamline closest to the center of the bilge in each section as a mounting position of a sectional bilge keel in the section; and installing the subsection bilge keel in each subsection according to the determined streamline. The large LNG ship bilge keel comprises subsection bilge keels distributed on an outer plate of a ship body subsection, the installation position of the subsection bilge keel in each subsection is a streamline closest to the center of a bilge part in the ship body subsection, and the streamline is obtained by conducting a streamline test on a large LNG ship. The accuracy of the installation position of the ship bilge keel in each subsection is guaranteed, the stabilization effect and resistance of the ship bilge keel on the whole large LNG ship are balanced, the ship building efficiency is improved, structural stress concentration of the subsection bilge keel is reduced, and the service life of the large LNG ship bilge keel is prolonged.

This invention provides a gravity-based impact protection and controllable sliding device and method for unmanned equipment. The device includes: a track comprising a ramp track installed on the bilge of a ship and a horizontal track installed on the ship's inner bottom plate, the ramp track and the horizontal track being smoothly connected; a mobile platform slidably mounted on the track, the top of the mobile platform for placing the unmanned equipment; an assembly platform located above the horizontal track, the height between the assembly platform and the horizontal track allowing the mobile platform to pass through, a traction device installed on the assembly platform for pulling the unmanned equipment on the mobile platform to the assembly station on the assembly platform; and a flexible telescopic barrier for blocking the mobile platform. This invention achieves efficient, stable, and controllable transfer of unmanned equipment within the ship's cabin.

The invention relates to the technical field of ship construction, in particular to a ship bilge keel structure. A ship bilge keel structure comprises a ship bilge part and bilge keels arranged on the ship bilge part, the bilge keels comprise bilge keel segments arranged in a segmented mode, every two adjacent bilge keel segments are arranged in a spaced mode, each bilge keel segment is obliquely arranged relative to the horizontal plane, a base plate is fixedly arranged on a curved-surface shell plate, and the base plate is fixedly connected with the ship bilge part. The bilge keel is fixedly arranged on the base plate in a segmented mode. The bilge keels are arranged at intervals in a segmented mode, the stress of the single bilge keel segment can be reduced conveniently, the bilge keels are arranged on the base plates in the segmented mode, the stress area can be increased on the base plates, and stress concentration is reduced; the inclined bilge keel has a water diversion effect; the problems that in the prior art, a bilge keel and a ship bilge need to bear large water pressure loads, so that welding seams are prone to being damaged, or the rigidity of the bilge keel is larger than that of a bilge outer plate, and the hull outer plate structure is prone to being damaged are solved.

The utility model relates to a marine sacrificial anode mounting structure which is used for a ship body, the ship body comprises a bilge outer plate, and a through hole is formed in the bilge outer plate; the sacrificial anode mounting structure comprises a concave cavity which is of a hollow structure with an opening in the upper end and is arranged in the through hole; the two cushion blocks are arranged at the bottom of the inner side of the concave cavity; the sacrificial anode is detachably mounted on the cushion block, and the upper end of the sacrificial anode is not higher than the upper end of the bilge outer plate. The sacrificial anode is detachably mounted in the cavity structure in the through hole of the bilge outer plate of the hull, so that the sacrificial anode sinks until the upper surface of the sacrificial anode is not higher than the upper surface of the bilge outer plate, additional resistance on the surface of the bilge outer plate is reduced, neat appearance of the hull is guaranteed, later replacement of the sacrificial anode is facilitated, and replacement cost is saved.

The application discloses a marine bottom shielding structure combining a cabin bottom shielding structure and a stack bottom shielding structure, which comprises the cabin bottom shielding structure and the stack bottom shielding structure located on the lower plate of the double bottom of a ship body, and a stack cabin shielding structure and a primary shielding structure located on the upper plate of the double bottom of the ship body, wherein the primary shielding structure is wrapped outside a reactor pressure vessel, the stack cabin shielding structure is located outside the primary shielding structure, the cabin bottom shielding structure is located outside the stack bottom shielding structure, and the stack bottom shielding structure is located below the primary shielding structure. The marine bottom shielding structure combining the cabin bottom shielding structure and the stack bottom shielding structure has simple structure, can form a complete radiation shielding system together with the stack cabin shielding structure, the primary shielding structure and seawater below the ship body, and can weaken the radiation leakage of the stack cabin to the surrounding area to the maximum extent, so as to ensure the radiation safety of personnel and equipment in the surrounding area.

The invention discloses a bilge pipeline auxiliary installation tool for ship construction, and relates to the technical field of pipeline auxiliary installation, the bilge pipeline auxiliary installation tool comprises pipeline support angle steel, a first installation frame and a second installation frame, a fixing mechanism is arranged in the first installation frame, and adjusting supports are fixedly installed on the two sides of the top of the first installation frame; the device comprises a first mounting frame, an adjusting support is fixedly mounted on the first mounting frame, a bidirectional screw is rotatably mounted in the adjusting support, two sleeve blocks are mounted on the outer side of the bidirectional screw in a threaded manner, and a supporting plate is fixedly mounted at the top of each sleeve block. After the first mounting frame is mounted on the steel angle of the pipeline support in the ship cabin bottom, when the pipeline is mounted subsequently, the pipeline is placed between the two nylon rollers and is supported by the nylon rollers, a plastic pipe can be easily pushed and mounted in place on the nylon rollers, time and labor are saved, and potential safety hazards are reduced.

The utility model discloses an electric remote control ship body which comprises a ship body, a driving mechanism and a dragging mechanism. The front end of the ship body is of a sharp bilge structure, and the sharp bilge structure provides instantaneous righting torque and enhances dynamic stability when the ship body turns or inclines due to crosswind, and generates a sliding effect and reduces resistance at a high speed; the cross section of the bottom of the ship body is in a sharp V shape and extends from the bow to the stern, the V-shaped bottom can effectively split waves during high-speed sailing, and ship body slapping is reduced; a round groove inclining backwards is formed in the motor support, the motor is fixed in the groove in the motor support, the motor inclines downwards to provide power for the ship body, arrangement of a transmission mechanism is reduced, the transmission efficiency is improved, and the probability that the driving mechanism breaks down is reduced; the dragging rope can be automatically released through the dragging mechanism, manual rope untying is not needed, and the device is suitable for long-distance control or use scenes with large water surface fluctuation.

The invention discloses a rapid detection method for ship fuel oil leakage, and the method comprises the steps: collecting and preprocessing the oil supply pressure, the oil return pressure, the oil supply flow, the oil return flow, the liquid level of a fuel oil tank and the hydrocarbon gas concentration of a cabin bottom, and obtaining a standardized real-time data flow; based on the fuel oil system operation data of the historical voyage number of the target ship and in combination with the current main engine load, a clustering regression fusion strategy is adopted to train a fuel oil system operation base line model in an off-line mode, and a fuel supply and return pressure and flow safety reference interval and a bilge hydrocarbon gas concentration reference value which are automatically updated along with the load are obtained; inputting the real-time data flow into the trained fuel system operation baseline model, and calculating a fuel leakage risk index; and according to the judged leakage level, the corresponding sound-light alarm and the quick block valve closing operation are triggered in a self-adaptive mode. According to the invention, the problems of single monitoring data, high false alarm rate and inaccurate response measures in the prior art are effectively overcome.

This invention relates to the field of bilge water main pipe technology, specifically a bilge water collection main pipe for passenger ships. The main pipe includes a hull, a bilge plate on the hull bottom, a bilge water main pipe on the bilge plate, a drainage mechanism for automatic drainage control on the bilge bottom, and a filtration mechanism for oil removal and discharge of the bilge water on the bilge plate. An oil filter tank is fixedly connected to the upper surface of the bilge plate, a cover plate is fixedly installed on the top of the oil filter tank, and a water outlet is located on one side of the oil filter tank. This bilge water collection main pipe utilizes a drainage mechanism connected to branch pipes on the bilge bottom. Multiple branch pipes are connected to the bilge water main pipe and fixed to a second pump for pumping bilge water. A drainage pipe at the outlet of the second pump extends through the cover plate into the oil filter tank, allowing the pumped bilge water to be sent to the filtration mechanism for oil-water separation and filtration.

The invention provides a container ship side channel bilge water discharging system and method. The container ship side channel bilge water discharging system comprises a suction pipeline arranged on a side channel sewage well, and a suction connector capable of being opened and closed is arranged at the end of the suction pipeline; the discharge pipeline is led out from the exposed deck downpipe, and the end part of the discharge pipeline is provided with a discharge interface capable of being opened and closed; the discharge port and the suction port are configured to be temporarily connectable by a portable pump. According to the container ship side channel bilge water drainage system, an original deck downpipe on the ship is used as a side channel drainage pipeline, and a portable pump is matched for drainage; compared with the prior art, a header pipe for communicating bilge water pipelines of sewage wells of channels on the left side and the right side of the container ship is omitted, bilge water of the channels on the left side and the right side of the container ship is simplified, the pipelines can be communicated and cut off only through necessary stop valves, check valves and blind flanges, and the weight of the pipelines and resistance caused by overlong pipelines are reduced.

The application discloses a safety system for an inlet and outlet valve of a total pump for a ship bottom fire extinguishing and a control method thereof, which comprises a total pump for a ship bottom fire extinguishing, a self-seawater main pipe and a self-ship bottom main pipe being communicated with an inlet main pipe of the total pump for the ship bottom fire extinguishing; a ship bottom sea discharge pipe and a fire hydrant pipe being communicated with an outlet main pipe of the total pump for the ship bottom fire extinguishing; a fire control pipe inlet total valve being arranged on the self-seawater main pipe; a ship bottom pipe inlet total valve being arranged on the self-ship bottom main pipe; a fire control pipe outlet total valve being arranged on the fire hydrant pipe; a ship bottom pipe outlet total valve being arranged on the ship bottom sea discharge pipe; the safety system further comprises a pump control box and a ship management system, the pump control box is used for controlling mode switching of the total pump for the ship bottom fire extinguishing, and the ship management system is used for controlling opening and closing of the fire control pipe inlet total valve, the ship bottom pipe inlet total valve, the fire control pipe outlet total valve and the ship bottom pipe outlet total valve. The application is used for ensuring safety of fire extinguishing or ship bottom operation when the total pump for the ship bottom fire extinguishing is in a fire extinguishing mode or a ship bottom mode.

The application discloses a multi-stage water treatment and discharge system for a cruise ship bilge water, which comprises a sewage well suction, a sewage treatment part, a first discharge control valve, a second discharge control valve and a clean bilge water collecting tank, the sewage well suction is communicated with the sewage treatment part, the sewage treatment part is communicated with the first discharge control valve, the first discharge control valve is communicated with the second discharge control valve or the clean bilge water collecting tank, the clean bilge water collecting tank is communicated with the second discharge control valve, and the second discharge control valve is communicated with the outside of a ship side. Compared with the prior art, the multi-stage water treatment and discharge system uses a heating and volume reduction mode, the bilge water oil filter has lower working load and longer working life, and under the condition of meeting the operation requirement, unnecessary cabin arrangement is reduced, and valuable engine room space is saved.

The application discloses a kind of based on alliance block chain's ship bilge oil sewage remote supervision method and system, the method includes: obtaining the data related to ship bilge oil sewage remote supervision business;Based on the data related to ship bilge oil sewage remote supervision business, establish ship bilge oil sewage supervision alliance block chain between different regulatory authorities, ship enterprises, sewage receiving units;Ship uploads ship bilge oil sewage data to alliance block chain by the way of initiating proposal, and remotely supervises ship bilge oil sewage based on block chain smart contract.The present application constructs ship bilge oil sewage remote supervision system based on alliance block chain, can identify bilge oil sewage abnormal data through block chain smart contract, prevent ship from forging or tampering oil sewage data, improve the reliability of ship bilge oil sewage remote supervision data.

The invention relates to the technical field of ship axial-flow pumps, and particularly discloses an integrated prefabricated axial-flow pump device for ship bilge drainage, which comprises a lower pump shell, a pump body and a fork pipe, the lower pump shell, the pump body and the fork pipe are mounted from bottom to top through bolts, a drainage channel is provided from bottom to top, and a shaft seat is mounted at the top of the outer wall of the fork pipe. A pump shaft is installed in an inner cavity of the shaft seat through a waterproof bearing, the top of the pump shaft is installed on a motor through a coupler, the motor provides rotation power for the pump shaft, a rotary water pumping mechanism is installed at the bottom end of the pump shaft, axial force is generated when the rotary water pumping mechanism rotates, fluid is conveyed in the axial direction, and an inactivation mechanism is locked to the top of the fork pipe through a bolt. And microorganisms and bacteria in the discharged fluid are inactivated. The problem that the working condition adaptability is poor due to the fact that the angle of a traditional axial flow pump impeller is fixed is solved, ship energy consumption is reduced, the response speed and the balance effect of ship load adjustment are greatly optimized, and the drainage requirements under different navigation working conditions are met.

The invention relates to devices for producing fresh water from ambient atmospheric water vapour and can be used for producing fresh water, preferably on natural water bodies. A mobile autonomous device for producing fresh water from air at sea is characterized in that it comprises a barge, the bilge of which has a tank disposed therein for storing fresh water from a rain chamber, and pipes which pass through the barge and the rain chamber and are connected in a ring via storage tanks, a circulating pump and a cooler which is disposed at depth in the sea and is attached to the barge by cables, wherein the rain chamber is connected by an air duct to a thermal collector via a fan; disposed between the thermal collector and the rain chamber are a compressor and an expansion valve of a heat pump, the pipes of the heat pump being disposed in the rain chamber and the thermal collector; mounted in proximity to the thermal collector is an electric power generator that is rotated by an underwater turbine which is rotated by kinetic energy from an underwater sea current; and the device is further equipped with a control system, wherein the barge is designed to be capable of changing position relative to the sun to ensure optimal positioning of the thermal collector toward the sun.

The application discloses a tail slide way type ship-mounted dinghy roller mounting method, which is characterized in that the tail slide dinghy roller originally installed in the mooring test stage is advanced to the dock stage for installation, and the water operation is changed into ground operation, so that the safety risk faced by the water operation is effectively solved, the ground operation is carried out in the dock stage, a simulation dinghy does not need to be made, the risk of the simulation dinghy dumping does not exist, only a bilge auxiliary installation tool needs to be made to install the bilge inclined roller, the horizontal roller can be installed according to the marking position of the tail door center line, the installation period can be greatly shortened, the period length is fixed and controllable, and the labor intensity is reduced.

A ship structure is provided that enables inspection of welded portions that become critical points in bilge tanks without incurring a large amount of expense on inspection equipment. A side girder (31) is provided along the welded portion between the first connecting edge (29Ac) of the first transverse web member (29A) and the second connecting edge (29Ba) of the second transverse web member (29B) in the transverse web (29). A window hole (33) for inspection is formed in the side girder (31). The window hole (33) is used to allow an inspection worker (M) to inspect the welded portion between the inclined inner edge (29Ab) and the straight inner edge (29Bc), which become the critical point (CP) for endurance inspection, while lying prone on the side girder (31).

The utility model relates to the technical field of ship manufacturing, and discloses a bilge bottom side tank upper bevel platform-free oil tanker cargo hold structure which comprises a main deck, a longitudinal bulkhead, an inner shell, an outer shell, a double-layer bottom and a transverse bulkhead which are connected with one another to form a cargo hold. A bilge bottom side tank is arranged at the joint of the inner shell and the outer shell and the double-layer bottom, a bottom side tank inclined plate is arranged on the side, located in the cargo hold, of the bilge bottom side tank, a horizontal aggregate is arranged at the upper break angle where the bottom side tank inclined plate is connected with the inner shell and the outer shell, and a T-shaped profile for heightening a web is arranged on the broadside of the bilge bottom side tank. And a middle platform is arranged between the horizontal permanent inspection channel and the height of the inner bottom of the double-layer bottom in the vertical direction of the transverse bulkhead. No platform is arranged on the bilge bottom side cabin upper break angle, and no horizontal truss is arranged at the height position of the transverse bulkhead bottom side cabin upper break angle, so that the structural weight can be reduced, the construction process is saved, the operation cost is reduced, and the economical efficiency is improved.

The present application relates to the field of ship, specifically relates to a right angle bilge reinforcing structure suitable for low speed floating body and a construction method thereof, wherein the right angle bilge reinforcing structure comprises a reinforcing piece and a support piece, the side plate and the bottom plate of the low speed floating body are vertically arranged, the support piece is located on the side of the side plate away from the bottom plate, the support piece and the bottom plate are an integral flat plate, the side plate is vertically welded on the integral flat plate and forms an inverted T-shaped structure with the integral flat plate, the reinforcing piece is arranged between the side plate and the support piece, and the end of the reinforcing piece away from the connecting part of the side plate and the support piece is welded with the side plate and the support piece, the support piece is extended outward from the bottom plate of the floating body, the bilge forms an inverted T-shaped structure, the side plate and the bottom plate are convenient to position and convenient to weld, the overall process is simple, meanwhile, the support piece and the side plate form a reinforcing area, the reinforcing piece is welded in the area, and the connecting strength of the right angle bilge is greatly improved.

The utility model discloses a blocking air bag structure without going into a well, the blocking air bag structure without going into the well comprises an air bag, an angle adjusting mechanism, a telescopic rod and an air pipe, one end of the angle adjusting mechanism is connected with the air bag, the other end of the angle adjusting mechanism is connected with one end of the telescopic rod, and a hollow structure is arranged in the telescopic rod. The air pipe is connected with the air bag on one side of the angle adjusting mechanism. The angle adjusting mechanism is matched with the telescopic rod, so that the air bag can completely enter a bilge well pipeline to be plugged, air is conveyed to the air bag through the air pipe, the bilge well pipeline is plugged through the air bag, the plugging effect is improved, manual well descending is not needed, and the operation safety is improved.

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.

This ship comprises: a hull; ammonia-related equipment provided to the hull; a bilge tank in which a bilge generated in the hull is stored; a liquid discharge line connected to the bilge tank and capable of discharging liquid from the bilge tank; a gas discharge line connected to an upper part of the bilge tank and capable of discharging gas from the bilge tank; and a heating part capable of heating the bilge in the bilge tank.

The present invention relates to a method for jet straightening at the stern of a ship. A straightening assembly is embedded in the stern bilge outer plate, and jet slots are formed on the lower portion of the bilge outer plate, tilted upward and forward and arranged at intervals. Gas is ejected outward through the jet slots, and the upward movement of the gas in the water causes the ejected gas to autonomously rise underwater. As the ship moves forward, the gas ejected from the jet slots on both sides exhibits an upward drift motion obliquely backward, changing the flow characteristics at the stern. This actively controls the flow field at the stern of the ship, thereby effectively improving the flow structure at the stern and enhancing the propulsion efficiency of the propeller. Simultaneously, the gas ejected from the jet slots can suppress the separated flow at the stern and, to a certain extent, reduce the pressure differential resistance during navigation. The present invention can reduce the ship's navigation energy consumption and greenhouse gas emissions by improving propulsion efficiency and reducing navigation resistance. Furthermore, the overall installation is convenient, the required gas volume is small, and the practicality is excellent.

The invention relates to a convex position connection structure for the hull shape of a wing-in-ground-effect craft, comprising a hull, which is formed by laying a sandwich layer plate on the outside of a frame body, wherein the sandwich layer plate is a three-layer structure consisting of an inner layer, a sandwich layer and an outer layer; the frame body comprises a plurality of transverse frames arranged at intervals along the length direction of the hull, and the plurality of transverse frames are jointly installed with longitudinal trusses at intervals along the circumferential direction; the hull is installed with a mid-wing via a convex wide-direction connecting platform on the top surface or via a narrow-direction connecting platform extending laterally to both sides; stepped plates are laid along the width direction on the outer wall surfaces of the sandwich layer plates at the middle and rear parts of the bottom surface of the hull, forming a front stepped surface in the middle part of the bottom surface of the hull and a rear stepped surface in the middle part of the bottom surface of the hull; bilge plates are also laid along the length direction on the sandwich layer plates on both sides of the bottom of the hull to form a bilge body; thereby, the assembly of functional components is achieved while maintaining the continuity of the hull shape, and the overall structural strength and rigidity are greatly guaranteed.