35results about "Vessel stability improvement" patented technology

The utility model belongs to ship equipment technical field discloses a kind of wave compression device and boat. Wave compression device includes hinged six-bar mechanism, spoiler piece and rotary drive part, rotary drive part drives spoiler piece rotation by hinged six-bar mechanism, to make spoiler piece have the working position of extension into water. The utility model is driven by first connecting rod continuous rotation, by the hinged transmission of fourth connecting rod and spoiler piece, the swing angle of spoiler piece is naturally limited by the rotation range of first connecting rod, without setting rigid stroke end, allowing rotary drive part continuous rotation, without reversing, avoid the "overshoot phenomenon" of traditional reciprocating motion, eliminate the vibration, wear and tear and control deviation problem caused by overshoot fundamentally.

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.

This invention relates to the field of marine renewable energy development technology, and discloses an anti-rolling wave fusion device and control method. The anti-rolling wave fusion device includes a wave energy platform, a floating wind turbine, a linkage mechanism, and a single-point mooring mechanism. One end of the wave energy platform is connected to a wave-absorbing float for capturing wave energy and attenuating the vibration force of the waves behind it. The floating wind turbine is located on the side of the wave-absorbing float away from the waves. The linkage mechanism is located between the wave energy platform and the floating wind turbine, and includes two parallel supporting trusses. The two ends of the supporting trusses are respectively hinged to the wave energy platform and the floating wind turbine through a rotating shaft, so that the floating wind turbine and the wave energy platform can move synchronously in the vertical plane. One end of the single-point mooring mechanism is located on the side of the wave energy platform away from the floating wind turbine, and the other end is used to connect to the seabed and form a mooring point. The wave energy platform rotates circumferentially around the mooring point through the single-point mooring mechanism, thereby improving the stability of the floating wind turbine.

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 utility model relates to a kind of multi-airbag coordinated trim's offshore semi-submersible vessel, belong to offshore semi-submersible vessel technical field, including semi-submersible vessel ontology, the front and rear sides of the left side of the upper surface of semi-submersible vessel ontology are all fixed with several first airbags by large cylinder bracket, one side of semi-submersible vessel ontology is equipped with anti-drop mechanism, and the anti-drop mechanism includes the fixed frame of being fixed in one side of semi-submersible vessel ontology and the number of two. The multi-airbag coordinated trim's offshore semi-submersible vessel, the stability when the ship dives can be increased by the buoyancy of several first airbags of front and rear sides, reduce swing and vibration, two second airbags are fixed in the two sides of semi-submersible vessel ontology, further enhance the lateral stability of ship, ensure that ship keeps balance in diving process, by the cooperation of fixed plate and protection frame, the outside protection performance of several first airbags of front and rear sides is promoted, reduce the impact of airbag in diving process by external object.

The application belongs to the technical field of offshore platforms, and particularly relates to a method for installing a depth finder and a log transducer of a flat-bottom self-propelled self-elevating platform, which comprises the following steps: S1, installing a support on the bottom surface in front of a bow side thruster cabin of the platform; S2, loading the depth finder or the log transducer into a cylinder; S3, inputting parameter data of the bow side thruster cabin into a neural network model for self-learning, and then determining the vertical installation depth of the cylinder according to the parameters output by the neural network model; and S4, determining the vertical installation depth data. The method for installing the depth finder and the log transducer of the flat-bottom self-propelled self-elevating platform can prevent the transducer from being affected by bubbles during navigation and enable the transducer to work normally by installing the transducer in front of the bow side thruster cabin of the platform. The neural network model is arranged to associate the draft of the bow side thruster cabin, wave data and the installation depth of the log transducer, so that the method can be applied to the installation of transducers on all offshore navigation platforms.

This invention provides a floating platform for online monitoring of marine ecology in nearshore shallow sea areas, comprising a frame and a float fixed inside the frame. Both the frame and the float have triangular orthographic projections. At each corner of the frame, a first instrument well is vertically positioned on the outer side of the corresponding corner of the float. A second instrument well is vertically positioned in the middle of the float. Ecological sensors and a data acquisition and communication control cabin are installed in both the first and second instrument wells. Multiple communication terminals, each corresponding to one of the data acquisition and communication control cabins, are located on the upper side of the float. The advantages of this invention are: the overall triangular shape of the float embedded in the frame, using a far-support, large-area frame structure, effectively improves the platform's resistance to capsizing at low water levels; the first instrument well at each corner of the frame provides installation space for the ecological sensors and the data acquisition and communication control cabin, while also effectively increasing the platform's support strength.

The application relates to the technical field of water depth survey, in particular to a method and device for identifying the water depth of a ship and electronic equipment, which comprises the following steps: acquiring a water depth image of a target ship, wherein the water depth image is a picture of the water gauge scale of the ship body of the target ship; performing visual analysis on the water depth image to obtain a water gauge scale, wherein the water gauge scale comprises a main scale and a secondary scale; determining a water depth main scale value and a water depth secondary scale value from the water gauge scale according to a preset value range and a preset position characteristic of the water gauge scale; and determining the water depth of the ship according to the water depth main scale value and the water depth secondary scale value. The application can quickly and accurately identify the water depth of the ship.

This invention provides a multimodal method and electronic device for detecting ship draft, which acquires point cloud data and image data; identifies scale lines and waterlines in the image data based on the point cloud data and image data, and calculates a first draft value based on the scale lines and waterlines; identifies the ship's target feature height and water surface height in the point cloud data based on the point cloud data and image data, and calculates a second draft value based on the ship's target feature height and water surface height; evaluates the confidence level of the first draft value to obtain a confidence weight; and obtains the draft result based on the confidence weight, the first draft value, and the second draft value. This method achieves both obtaining the draft value through direct reading from the draft gauge using image data as the primary source and obtaining the draft value through ship height calculation using point cloud data as the primary source, followed by weighted calculations to obtain the final draft value, thus yielding an accurate ship draft value.

A marine drive system and method for marine vessel stabilization is provided. The marine drive system has at least one electric drive unit arranged to generate a thrust power for propulsion of the marine vessel, at least one trim actuator arranged to control the thrust elevation angle of the at least one electric drive unit, and a control unit arranged to adjust the thrust power of the at least one electric drive unit and the thrust elevation angle of the at least one trim actuator in order to obtain desired stabilizing pitch and roll movements of the marine vessel, wherein the control unit is connected to a steering control device of the marine vessel. The control unit is arranged to generate a force feedback by the steering control device based on the applied adjustments of the thrust power and the thrust elevation angle.

This invention discloses a bamboo-joint wave energy photovoltaic complementary power generation platform with wave-damping function, comprising a bamboo-joint floating tube structure and a photovoltaic power generation unit. The bamboo-joint floating tube structure is composed of multiple floating tube segments connected in series. A pendulum plate is rigidly connected to the bottom of each floating tube segment, and a power generation mechanism is set between the floating tube segments. The photovoltaic power generation unit includes a photovoltaic panel set above the area enclosed by the floating tube segments and a truss supporting the photovoltaic panel. The truss is connected to the power generation mechanism via a PTO. When the device is subjected to external waves, the waves first act on the bamboo-joint floating tube structure. Due to the wave-damping effect of the bamboo-joint segmented structure and the damping effect of the pendulum plate, the external wave energy is effectively reduced, making the internal area enclosed by the floating tubes a stable and wave-free water area. This keeps the photovoltaic power generation unit relatively stable, and the photovoltaic panel converts solar energy into electrical energy in a stable environment, realizing complementary power generation of wave energy and solar energy, as well as the wave-damping function of the platform itself.

This invention relates to the field of marine photovoltaic power generation technology, and provides a semi-submersible marine photovoltaic support structure, comprising several modular floating bodies. The advantages of this invention are: the steel pipes wrapped with glass fiber reinforced composite material improve the stability of the structure under earthquakes and waves; the use of glass fiber reinforced composite material significantly enhances its resistance to marine corrosion and effectively reduces the structure's self-weight, enabling it to float on the sea surface; and the modular floating bodies are connected to anchors on the seabed via anchor chains, ensuring a stable position of the device in the ocean. By rotating the photovoltaic panel components with three truss supports on the same plane, the tilt angle of the photovoltaic panel components can be adjusted. This not only optimizes power generation efficiency according to seasonal and solar radiation changes, but also allows the photovoltaic panel components to be adjusted to a horizontal position under extreme weather conditions such as typhoons, thereby significantly reducing wind load and improving the structure's disaster resistance.

The application belongs to the technical field of offshore wind power generation, and relates to a combined tension leg floating type wind turbine and a mounting method thereof. The combined tension leg floating type wind turbine comprises a main floating body, a plurality of water surface floating buoys, a plurality of first tensioning tendons, a plurality of second tensioning tendons and a plurality of gravity type foundations. The upper end of the main floating body is provided with a wind turbine. The plurality of water surface floating buoys are arranged around the outer periphery of the main floating body. One end of the first tensioning tendon is connected with one water surface floating buoy, and the other end is connected with the main floating body. One end of the second tensioning tendon is connected with the main floating body, and the other end is connected with one gravity type foundation. The application realizes the modularized split mounting mode to greatly reduce the construction threshold and construction cost in the deep sea complex environment, and simultaneously utilizes the distributed floating buoys and double tensioning mooring to improve the anti-overturning and heave suppression performance.

The application belongs to the technical field of offshore wind power foundation, and provides a semi-submersible floating wind power foundation, which comprises a central column, the top of the central column is used for fixedly connecting a wind turbine tower, the bottom of the central column is fixedly connected with a ballast tank, three groups of side columns are arranged on the outer side of the central column, the distance between the three groups of side columns and the central column is the same and the three groups of side columns are equally spaced on the outer side of the central column; a space truss connection system comprises three groups of connecting beam members for connecting two adjacent side columns and three groups of closed space truss structures for connecting the side columns and the central column. The application solves the technical problems of uneven force bearing, high fatigue risk of the existing triangular layout semi-submersible foundation caused by the wind turbine offset, large structure weight and high construction cost caused by the dependence on large and heavy components, and achieves balanced transmission of the floating foundation load, improves the overall structure safety and hydrodynamic performance, and reduces material consumption and construction cost through the innovative structure layout and connection mode.

The application relates to the technical field of unmanned ship inspection and discloses a multi-scene self-adaptive intelligent inspection unmanned ship based on Internet of Things, which comprises a ship body bearing seat, a suspension structure symmetrically arranged on the two sides of the ship body bearing seat and providing buoyancy for the inspection unmanned ship, a power component located at the tail end of the suspension structure and providing power for the inspection unmanned ship, a collection bin arranged on the upper end of the suspension structure, auxiliary collection components arranged between the collection bins and capable of acting on water flow, a flow guide filtering mechanism assembled at the middle rear end of the collection bin, the flow guide filtering mechanism comprising an adjustable supporting component, a fixed component, a flow guide component and a flexible intercepting component, the adjustable supporting component is fixedly connected with the collection bin, the flow guide component is connected with the adjustable supporting component and is linked to realize angle adjustment, the flexible intercepting component is connected between the two flow guide components to form a floating object intercepting area, and an integrated module is integrated in the ship body bearing seat.

The invention relates to a propeller arrangement in a cathodic protection system for a marine vessel with a marine propulsion system, which cathodic protection system comprises a direct current power source with a positive terminal. The propulsion system comprises at least one driveline housing at least partially submerged in water; a torque transmitting drive shaft extending out of the driveline housing; and at least one propeller mounted on the drive shaft. According to the invention, the at least one propeller is electrically isolated from its drive shaft. Each electrically isolated propeller is electrically connected to a slip ring connector, which slip ring connector is in electrical connection with the positive terminal. The invention further relates to a vessel provided with such a propeller arrangement.

A draft measurement system and method based on image processing using artificial intelligence technology. The draft measurement system and method can improve the accuracy of draft measurement by preventing errors in image processing that can occur depending on the shooting angle, the picture quality, the degree of surface contamination of a hull, and the like, through application of artificial intelligence technology to images extracted from video data, and can determine a draft value based on video data acquired in real time using technology such as a deep learning model for segmentation for draft mark edge detection and waterplane recognition and an edge detection algorithm and distortion correction algorithm for waterplane detection.

This utility model discloses a ship draft measurement device, including a measuring mechanism. The measuring mechanism includes a measuring tube disposed inside the hull, with its bottom communicating with the outside of the hull. Multiple sliding rods are installed inside the measuring tube, and sliders are fitted onto the sliding rods. A float is fixed between the sliders. An observation window is provided on the measuring tube, and a scale is provided on the measuring tube or the observation window. By setting a measuring tube inside the hull that communicates with the outside of the hull, the liquid level in the measuring tube is matched with the draft depth using the principle of communicating vessels. The float inside the measuring tube is always above the seawater entering the measuring tube. The crew can quickly confirm the draft depth through the observation window and the scale. The float inside the measuring tube is slidably connected to the multiple sliding rods via sliders, ensuring stable and reliable movement of the float, thereby reducing measurement errors and the possibility of misjudgment.

The invention relates to an offshore comprehensive experiment platform which comprises an upper shell, buoys, stand columns, supporting rods and a lower floating body, the upper shell forms a platform deck, the upper shell is provided with a head, a middle and a tail, the head and the middle are connected to form a rectangle, and the tail and the middle are connected to form a trapezoid; the buoys are arranged at the two ends of the head part and the tail part; the number of the stand columns is four, and the four stand columns are arranged on the lower side of the tail portion and the lower side of the middle portion in a rectangular shape. The multiple supporting rods are located at the lower ends of the stand columns, and the multiple supporting rods are connected with the two adjacent stand columns, the stand columns and the adjacent pontoons, and the pontoons and the adjacent pontoons; and the lower floating body is arranged at the tail part and is connected with the floating cylinder and the upright post which are positioned at the tail part. The offshore comprehensive experiment platform has high strength and load resistance, and the service life is prolonged.

A floating structure (5) for offshore wind power generation comprises a floating base (10) where a windmill tower (1) is disposed in a standing manner and that is divided into a plurality of air chambers (11); and an air amount adjustment unit (20) that adjusts air amounts in the air chambers (11) that oppose each other with a center of the floating base (10) therebetween. Each of the air chambers (11) includes an open bottom portion and a soft film body (16) in a slackened state that partitions an inside of the air chamber (11) into an air layer (17) and a water layer (18). Therefore, the floating structure (5) is one whose installation location is not limited, that provides excellent stability, and that is also suitable for use in extra-large-scale wind power generation of 20 MW or greater.

This utility model relates to the field of marine water quality testing technology, and particularly to an underwater suspension mechanism for maintaining the stable attitude of a sensor, comprising: a housing (1), a wire (18), a detection unit (19), and multiple buoyancy adjustment components disposed on the outside of the housing (1); each of the buoyancy adjustment components includes a buoyancy box (3) and a telescopic mechanism (2) connected to the buoyancy box (3) and the housing (1), wherein the telescopic mechanism (2) is used to adjust the position of the buoyancy box (3) relative to the housing (1) to change the support area of ​​the underwater suspension mechanism; an air bladder (8) is disposed inside the buoyancy box (3), and the buoyancy of the buoyancy box (3) is changed by adjusting the volume of water inside the air bladder (8), thereby adjusting the center of gravity and attitude of the underwater suspension mechanism.

The application discloses a dynamic sea state ship draft automatic identification method based on a relative wave static algorithm, and comprises the following steps: acquiring a time sequence image sequence containing a ship draft mark area; processing each frame image in the time sequence image sequence, extracting a draft mark feature in each frame image, and calculating an instantaneous draft value corresponding to the draft mark feature based on the draft mark feature to form an instantaneous draft value sequence; and processing the instantaneous draft value sequence based on the relative wave static algorithm to obtain a final draft value, wherein the calculation of the final draft value comprises the following steps: presetting a stability judgment threshold of a water surface residence time; traversing the instantaneous draft value sequence to judge whether a difference between instantaneous draft values of adjacent frames in the instantaneous draft value sequence satisfies the stability judgment threshold; selecting a maximum continuous stable frame count from all continuous stable frame counts; and taking the instantaneous draft value of the frame corresponding to the maximum continuous stable frame count as the final draft value.

The utility model discloses a seawater sampling device with floater relates to marine engineering technical field, the utility model discloses a base, the base top fixedly connected with support frame is provided with the sampling mechanism on the support frame, be provided with stabilizing mechanism on the base, the sampling mechanism includes motor frame, motor fixedly connected with in the motor frame, the utility model discloses a filter box is arranged, and the motor can drive screw rod rotation, then the rotation of screw rod will make screw cylinder move down, at this moment, the screw cylinder will drive the sliding of limit strip in the sliding slot, then the screw cylinder will drive the downward movement of the connecting frame, at this moment, the connecting frame will also drive the downward movement of filter box, through the filter box that can filter seawater, reaches can first seawater filtration and then collects, can remove the suspended particles, plankton, sediments and impurities in seawater, ensures that the water sample collected is more pure, avoids the effect of pollution source and influences the accuracy of subsequent analysis.

A mooring assembly (11; 11') for installation on a marine structure (4, 5, 6), above or below a water surface (7), comprises a main frame (101; 101') having a connecting portion (107) for connection to the marine structure. The assembly comprises a stopper device (112; 112'; 112") which is arranged in the main frame (101; 101'), and an elongate stopper member (104) which may be connected to a mooring chain or line. The stopper device (112; 112'; 112") is configured for interlocking with the elongate stopper member (104). The stopper device (112) comprises a housing (122) with a plurality of ratchet pawls (124) arranged in a circular chamber (138), wherein the pawls (124) are movably interconnected via a ring member (125) and biased towards each other by an elastic member (123), and each pawl comprises one or more ratchet teeth (133) for interaction with corresponding teeth (118) on the elongate stopper member (104).

The present application relates to the technical field of marine engineering equipment and ship operation control, and particularly relates to a tension cable position feedback system and a use method thereof, which comprises a mechanical execution module, a sensor assembly, a hydraulic drive module and a data calculation module; the mechanical execution module comprises an A-shaped frame, a winch with heave compensation and a load placing frame, and is arranged in an operation area of a ship; the hydraulic drive module is arranged beside the mechanical execution module and is in transmission connection with a driving hydraulic cylinder of the A-shaped frame and the winch through a hydraulic pipeline; the sensor assembly comprises a proximity switch, a central control encoder, an incremental main shaft encoder, an absolute value main shaft encoder and a single-pulley tension sensor, and is arranged at a structural position of the mechanical execution module and the hydraulic drive module; and the data calculation module is connected with the mechanical execution module, the hydraulic drive module and the sensor assembly respectively. The method is low in cost, accurate in calculation and recyclable.

The application discloses a water quality continuous online detection buoy station and relates to the technical field of water quality detection.The buoy station comprises a buoy body, a photovoltaic power generation assembly, a comprehensive weather sensor, a positioning sensor, a wind speed and direction sensor, a placing cabin formed in the buoy body, a water quality sensor and a wave sensor arranged in the placing cabin, an upper cover arranged on the placing cabin, a plurality of probe pipes fixedly connected to the bottom of the buoy body and communicated with the placing cabin, the probe pipes being used for water to enter the placing cabin and for the water quality sensor to detect, and a fixing unit arranged on the buoy body.The buoy station has a reasonable structure, the relative position of the detection buoy station is fixed, the detection buoy station is not easy to move when encountering strong wind and waves, the buoy body has an extension amount relative to the pulling rope under the fluctuation of strong wind and waves through the plurality of buffer springs, the buoy body floats up and down along with the waves, the shaking is reduced, and the buoy body is prevented from overturning due to unstable gravity.

An improved cap rudder and a vessel. The cap rudder (1) comprises a rudder shaft (10) and a cap plate (11) fixed to a lower end (104) of the rudder shaft. A rudder shaft sleeve (12) is positioned axially between the cap plate (11) and an upper end (101) of the rudder shaft. In a radial direction, the rudder shaft (10) is supported within the rudder shaft sleeve (12) via a first bearing arrangement. A pair of coaxially disposed transverse shafts (13) are arranged with their axis perpendicular to the axis of the rudder shaft (10). One end of the transverse shafts (13) is fixed to an outer wall of the rudder shaft sleeve (12), and the other end is a bearing connection end (132) connected to a second bearing (133). The transverse shafts and the rudder shaft sleeve form a cruciform structure, and the rudder shaft sleeve is rotatable about the transverse shafts, thereby changing the rudder angle of the cap rudder to enable adjustment and control of the longitudinal trim of the hull.