91 results about "Ocean current" patented technology

An ocean wave and tidal current energy conversion system includes a first vessel and a second vessel, the first vessel being parallel and spaced apart from the second vessel. The first and second vessels include supports that receive cylinders that rotate from ocean waves and currents to create hydraulic oil pressure via hydraulic cylinders. The hydraulic oil in the energy conversion system is pumped into a pressure accumulator that removes hydraulic surges and operates an electric generator. The electric generator may power an electrolysis batch system for the production of hydrogen that fills each vessel with hydrogen gas.

This invention provides a slow-release feed device for marine aquaculture, relating to the field of marine aquaculture technology. It includes a rotating drum, a drum cover, and a fixed shaft. A rotating impeller is mounted on the rotating drum, which is connected to the drum cover to form a cylindrical space. The fixed shaft passes through the central axis of the rotating drum and drum cover and is rotatably connected to them. A cake holder, a feed cake, and a cake brush are installed within the cylindrical space. The cake holder is fixedly connected to the fixed shaft, and the feed cake is mounted and fixed on the cake holder. The cake brush rotates synchronously with the rotating drum, brushing the surface of the feed cake to accelerate slow release. Utilizing ocean currents or the up-and-down movement of seawater, the rotating impeller drives the rotating drum to rotate, which in turn drives the cake brush to continuously brush the slow-release flocculated layer formed on the surface of the feed cake. This effectively accelerates the diffusion and release of feed particles, solving the problem of excessively long natural slow-release time for feed cakes and their inability to pass through a 150-mesh or finer silk sieve, thus meeting the needs of aquaculture such as oyster farming.

This application relates to the fields of SAR signal processing and marine remote sensing applications, and provides a method and apparatus for sea surface current field inversion based on electromagnetic vortex wave radar data. The method determines the Doppler spectrum using electromagnetic vortex wave radar image data, obtains the measured frequency position of the trough feature point in the Doppler spectrum, and determines the theoretical frequency position using the position and angle of the two main lobes and the angle of the trough feature point in the radar antenna pattern. Then, the difference between the measured frequency position and the theoretical frequency position is used to obtain the anomalous frequency offset. Next, the Doppler frequency offset caused by wind and wave motion is removed from this anomalous frequency offset to obtain the target Doppler frequency offset. Finally, the radial velocity of the sea surface is calculated using the Doppler frequency offset, thus realizing sea surface current field inversion. This effectively expands the applicability of the Doppler frequency shift-based ocean current inversion method and improves the application potential of electromagnetic vortex wave radar in sea surface current field detection.

The present application relates to the field of ocean engineering and intelligent detection technology, specifically to a kind of multi-robot collaborative underwater oil and gas pipeline weld intelligent detection method and system, it includes obtaining and fusing each robot perception and task state data, assesses communication and perception ability, predicts task load trend and optimizes scheduling, adjusts multimodal fusion priority, re-plans task path and optimizes execution strategy, generates collaborative detection feedback data.The present application improves the collaborative ability of multi-robot in communication limited and ocean current disturbance environment through the dynamic task scheduling mechanism of global collaborative state perception;Combined with the time sequence alignment of multimodal sensing data and the dynamic adjustment of fusion priority, the stable recognition ability in complex underwater environment is enhanced;Through the joint optimization of task path planning and data fusion strategy, the detection coverage and defect recognition accuracy are improved, and the adaptability and reliability of the system in deepwater long-distance pipeline weld detection are enhanced.

The invention relates to the field of deep sea culture equipment, in particular to an offshore composite foundation lifting type net cage which comprises pile legs distributed in a rectangular mode, lifting sleeves capable of axially climbing or descending are installed on the pile legs in a matched mode, and a plurality of installation assemblies are arranged between the adjacent lifting sleeves. The mounting assembly comprises corner mounting blocks fixedly connected with the lifting sleeve, a plurality of splicing mounting blocks are arranged between the corner mounting blocks at the two ends at equal intervals, protective rods and net cage plates are detachably mounted between the splicing mounting blocks and the corner mounting blocks and between the adjacent splicing mounting blocks, and the protective rods are located on the outer sides of the net cage plates. A net cage bottom plate is mounted at the bottom end of the bottommost net cage plate. According to the device, organisms can be effectively prevented from being attached to the inner wall of the net cage, the service life of the net cage is greatly prolonged, the ocean current effect in the ocean is effectively utilized in the whole cleaning process, extra power resources are not needed, and therefore automatic cleaning is achieved in the breeding process.

This invention proposes a deep-sea multi-source fusion global navigation method based on time delay backtracking compensation, comprising the following steps: decomposing the actual state of the submersible into a nominal state and an error state; using the output of the inertial measurement unit to perform high-frequency integration extrapolation on the nominal state to obtain the predicted value of the nominal state; and recursively deriving the prediction error covariance matrix; acquiring the velocity measurement of the Doppler log, calculating the velocity measurement residual according to its working mode and introducing ocean current compensation; performing Kalman update to correct the nominal state to obtain the locally compensated nominal state; establishing a historical state buffer; when receiving an acoustic position measurement with a timestamp, calculating its time delay and retrieving the corresponding historical state; performing Kalman update to obtain the corrected historical state; and re-integrating and recursively deriving to the current time to obtain the current nominal state, which serves as the final global pose estimate of the submersible. This method can enable the submersible to maintain high-precision and high-stability navigation in complex deep-sea environments.

This utility model belongs to the technical field of marine oil and gas and power development equipment, and discloses a vibration damping device for marine risers and submarine cables. The device includes a damping cylinder, a positioning component, a support rod, a sleeve half-ring, bolt holes, and bolts. The damping cylinder is rigidly connected to the sleeve half-ring via the support rod and consists of two symmetrical half-cylinder structures, which are bolted together and fitted around the marine riser or submarine cable. The positioning component can be quickly installed and removed, providing reliable axial positioning for the vibration damping device. This utility model achieves efficient vibration reduction based on the synergistic mechanism of added mass efficiency and hydrodynamic damping energy dissipation. It has a simple structure, convenient and diverse installation methods, and is unaffected by ocean current direction or component attitude, making it widely applicable to vibration control of marine pipelines.

This invention discloses an autonomous vessel and a method for maintaining a precise position or trajectory during offshore operations (e.g., cable or pipe laying or offshore construction installation). The vessel includes multiple externally anchored mooring lines, a winch system with tension sensors, a position sensor, and a control system. The control system processes position and tension data to detect deviations caused by environmental forces such as wind, waves, or ocean currents. In response, the control system activates the winch system to adjust the length of the mooring lines, counteracting forces caused by different environmental factors and achieving controlled maneuvering within the mooring area. An optional artificial intelligence module can learn from historical data to predict dynamics and optimize adjustments along predetermined waypoints. Compared to traditional dynamic positioning systems, this reduces fuel consumption, improves accuracy, and minimizes risk. It is applicable to vessels such as barges or installation platforms.

This invention discloses a marine environmental monitoring buoy that is easy to recover, belonging to the field of marine equipment. The aforementioned monitoring buoy includes a buoyancy component and a buoy body that rotates slightly back and forth inside the buoyancy component. The buoyancy component includes a buoyancy ring and a support ring disposed outside the buoyancy ring, with the buoy body rotatably connected to the inside of the buoyancy ring. An anchoring component is installed outside the support ring, comprising a hollow shell and a clamp. An auxiliary anchor is rotatably mounted at the bottom end of the hollow shell, and a central anchor is rotatably mounted at the center of the bottom end of the buoy body. An isolation component is provided between the auxiliary anchor and the central anchor. A protruding end is provided at the bottom of the buoy body, and multiple actuating plates are fixedly connected around the outside of the protruding end. This invention, through structural improvements, overcomes the problem that when buoys are used directly floating on the sea surface, they can only rise and fall with the waves, unable to adapt to the dynamic changes of ocean waves and currents, and are prone to buoy deviation and overturning, affecting monitoring accuracy.

This invention discloses a dual-buoy wave-current energy combined power generation device, comprising a connecting rod and two identical float power generation components. Each float power generation component includes a float upper shell, a support rod, a push rod, a ratchet transmission assembly, a speed-increasing assembly, and a generator. The two float components are hinged together by the connecting rod and oscillate relative to each other with the waves, using a lever principle to drive the push rod in a reciprocating motion. The ratchet transmission assembly converts the reciprocating motion into unidirectional rotational output, which is then accelerated by two stages of speed-increasing components to drive the generator, achieving dual-buoy coupled power generation. The lower shell of the float is conical to reduce seawater resistance and contains springs and vibration energy storage blocks to recover vibrational energy and improve wave energy utilization. This device uses a helical impeller to absorb ocean current energy; the blades are subjected to force perpendicular to the helical shaft, achieving unidirectional self-starting rotation. This invention features a simple structure, high transmission efficiency, and stable output. Through wave-current energy combined power generation and the dual-buoy coupling design, it significantly improves power generation efficiency and device stability.

The application discloses a floating body type wave energy coupling sea current energy seawater desalination device, and relates to the technical field of comprehensive exploitation and utilization of marine energy, comprising a ring-shaped floating body, a sea current energy utilization module arranged below the ring-shaped floating body, a disc type compression module arranged at the center of the ring-shaped floating body, and a wave energy utilization module arranged above the disc type compression module; a gearbox, a booster pump and a reverse osmosis device are installed on the ring-shaped floating body. The disc type compression module, the wave energy utilization module and the sea current energy utilization module are matched to realize seawater pressurization and simultaneous capture of wave energy and sea current energy, so that the marine energy is fully utilized for seawater desalination. The water desalination device has low cost, high efficiency, energy saving and no pollution. The three modules are integrated by using the ring-shaped floating body, the device is quickly installed, the installation cost is low compared with the existing fixed pile type, and the device can be installed according to actual use requirements.

The application discloses a kind of bionic deep-sea ranch, including fence, pedestal, fence overall is ellipsoid, and the lower end of fence is installed pedestal;Fence is composed of several longitudinal fence rods and horizontal fence rods, longitudinal fence rod is flexible bendable rod;Each longitudinal fence rod is vertically connected with multiple horizontal fence rods along its length direction, and the horizontal fence rods on adjacent longitudinal fence rods are staggered;The top of all longitudinal fence rods is surrounded by a circular mouth, and the automatic telescopic rope mechanism for controlling the opening size of the circular mouth is installed;The whole of the pedestal is a counterweight round plate, and the bottom of the counterweight round plate is installed with an inflatable buoy with automatic inflation and deflation equipment.The fence in the application can be controlled to contract and open, which can improve the activity space of fish, make fish obtain more nutrients, prevent ocean current, typhoon and other impacts on fish school, and prevent marine organisms such as shells and seaweed from attaching and growing on the fence.

The underwater static sounding device with automatic climbing sonar comprises a penetrating static sounding device, lifting plates are arranged on both sides of the top of the support of the penetrating static sounding device, lifting ropes are connected to the lifting plates, a cable is arranged at the center of the top of the support of the penetrating static sounding device, and the lifting ropes and the cable are connected with lifting equipment on a construction ship; an automatic climbing sonar device is sleeved on the cable, the automatic climbing sonar device comprises a floating lifting device, a sonar device, a power device for driving the sonar device to climb, and a locking fixing device for fixing the sonar device. The detection range of the underwater static sounding device with automatic climbing sonar is convenient to specify, most noise data can be avoided, the influence of unknown factors such as ocean current and marine organisms in the ocean during detection can be reduced, the detection result is high in precision, meanwhile, the underwater static sounding device with automatic climbing sonar is high in automation, and can simultaneously perform seabed soil layer survey and topographic survey.

This invention relates to the field of AUV motion control technology, specifically disclosing a three-dimensional autonomous docking control method for AUVs based on Fourier regularization and reward shaping. The method includes: establishing a five-degree-of-freedom kinematic and dynamic model of the AUV, defining the thruster thrust and rudder angle as a continuous motion space; constructing wave disturbance and ocean current disturbance environment models, simulating the real ocean environment based on wave spectrum theory and the Morison equation; establishing the geometric relationship and success constraints for AUV three-dimensional docking, defining the docking relative distance, axis deviation, and attitude mismatch; this invention, through a combined reward shaping and Fourier regularization mechanism, achieves a high final docking success rate in various harsh ocean environments such as wave disturbance, ocean current disturbance, and combined disturbances. Directional reward guidance enables the strategy to converge rapidly to the optimal solution, while frequency domain regularization ensures the accuracy of value approximation. The synergistic effect of these two mechanisms allows the controller to output precise thrust and rudder angle commands, satisfying both position and attitude constraints in three-dimensional docking.

This invention discloses a design method for marine energy utilization blades and the designed impeller. Based on a spherical profile lift-drag combined design concept, the marine energy utilization blade consists of a helical blade and two booster blades, one at the top and one at the bottom. The helical blade is determined by the initial airfoil line along the scanning path of the helical blade. The two booster blades are respectively connected to the upper and lower ends of the helical blade, and are determined by a bucket-shaped profile along the spherical arc guide line. The impeller consists of three sets of blades, a central shaft, and two end plates, all connected spherically. The three sets of blades are evenly distributed on the spherical profile. The central shaft is connected to the upper and lower end plates, providing support for rotation. The upper and lower end plates provide support and fixation, and are connected to the power generation device. This invention's impeller can achieve efficient and stable operation in omnidirectional low-velocity flow environments such as deep seas, and has advantages such as omnidirectional response to unpredictable ocean currents, high self-starting capability and operational stability, and optimized structural parameters for efficient operation.

The application discloses a kind of umbilical cable complex environment simulation test devices for deep-sea mining, the device includes test box, ocean current simulation mechanism, vibration mechanism, guide mechanism, test piece installation mechanism, wind load simulation mechanism, monitoring component and temperature control mechanism.Test box inner cavity fills sea water solution to simulate seawater environment;Ocean current simulation mechanism is communicated with test box inner cavity, for driving sea water solution to produce controlled circulation flow to simulate deep-sea ocean current load;Vibration mechanism is set at the top of test box, for producing multi-degree-of-freedom vibration to simulate ship body movement load;Guide mechanism is arranged on the bearing surface of vibration mechanism, and the direction of test piece is guided by rolling element;Test piece installation mechanism is used to lock the two ends of test piece and apply controllable tension;Wind load simulation mechanism is towards test piece to simulate wind load;Monitoring component real-time acquisition environmental parameter and test piece state parameter;Temperature control mechanism is immersed in sea water solution to adjust temperature to simulate deep-sea temperature environment.

This invention discloses a floating photovoltaic device with a porous, multi-stage wave-damping breakwater. It includes solar panels fixed to a support platform by multiple support rods. These support platforms are interconnected to form a platform structure. Multiple breakwaters are installed on the outer ends of the support platforms, and a power generation mechanism is located at the bottom of the support platforms. The breakwater design reduces the impact of waves on the support platform by using a first wave-pushing plate above the water surface and a second wave-pushing plate below the water surface to reduce the impact of water currents. It also allows for the reuse of waste buffer oil, avoiding resource waste. Furthermore, the power generation mechanism ensures that the first bevel gear rotates regardless of the direction of impact, improving the operating environment of the power generation mechanism and increasing the efficiency of the photovoltaic device through the energy of ocean currents.

The present application relates to the technical field of virtual simulation and fluid modeling, in particular to a sea current prediction and visualization method based on digital twinning, comprising the following steps: S1, setting a boundary water level and a terrain elevation to calculate an initial flow velocity field, and generating a projection velocity field satisfying an incompressible condition through projection correction; S2, generating a disturbance mapping by combining a difference value of the projection field and the initial field, a terrain gradient and a boundary change rate, and marking a potential visual discontinuous area; S3, constructing a terrain-sensitive disturbance factor to modulate a velocity input, driving a wave and particle system, and realizing smooth transition and consistent evolution of a physical field and a visual rendering system. The present application realizes the fusion effect of high consistency between physical precision and visual performance of sea current simulation under complex terrain by constructing a disturbance-modulated physically consistent velocity field and driving the wave and particle system to evolve cooperatively.

This invention discloses a self-weight backfilling submarine cable protection device, comprising: an upper cover shell, a lower trough, a fixing base, and guide wings; the upper cover shell and the lower trough are detachably connected; the fixing base is disposed at both ends of the lower trough for limiting the submarine cable; the guide wings are symmetrically disposed on both sides of the lower trough and integrally formed with the lower trough; a backfilling trough is provided inside the lower trough, and the backfilling trough is placed between the fixing bases; this invention reduces the construction difficulty of the protection device and improves the convenience of underwater installation while ensuring structural stability; it optimizes and weakens the scouring effect of ocean currents on the seabed and the sediment around the cable; it achieves long-term stability of the backfilled sediment, preventing secondary scouring that could lead to cable exposure; and it meets strength requirements while improving the device's corrosion resistance and service life in the marine environment.

This application relates to the field of computer graphics technology, and in particular to a marine visualization method and system for simulating ship motion. The method includes: generating an ocean height field based on a selected wave spectrum; acquiring viewpoint height and topographic information, and generating an ocean mesh model based on the viewpoint height, the topographic information, and the ocean height field; calculating ocean surface reflected light, ocean surface scattered light, and foam based on the ocean mesh model to obtain the ocean visualization result. This application can simulate ocean height fields and lighting effects under different sea conditions, and users can quickly adjust the simulation environment according to their needs. Visualizing marine elements can intuitively reflect changes in the marine environment, which is helpful for environmental monitoring and management. For example, visualization of data such as temperature and ocean currents can assist in scientific research and decision-making.

This invention provides a method for optimizing minimum EEOI speed of ships based on a PI-BT network, considering ocean current uncertainties, belonging to the field of ship energy efficiency optimization and intelligent navigation technology. Based on measured ocean current data from shipping routes, this invention mines the characteristics and probability distribution of ocean current uncertainties through statistical testing and wavelet decomposition techniques; derives the mapping relationship between EEOI and main engine speed and ocean current velocity, establishing a minimum EEOI speed optimization model; identifies core sensitive parameters through sensitivity analysis; constructs a physically guided Bayesian Transformer (PI-BT) network, designing a dual-channel input embedding layer, a Bayesian Transformer encoder, an EEOI physical information constraint layer, and a multi-objective optimization output module; and constructs a multi-component total loss function to complete network training, achieving robust optimization of minimum EEOI speed of ships under ocean current uncertainties. This invention integrates temporal modeling, uncertainty quantification, and physical constraint capabilities, significantly improving the accuracy, robustness, and computational efficiency of the speed optimization scheme.

The application discloses a ribbonfish breeding system based on a marine ranching platform and belongs to the technical field of deep-sea aquaculture.The scheme of the application comprises a second base frame, a buoyancy assembly is arranged below the second base frame, and a culture net cage is connected below the buoyancy assembly.The buoyancy assembly comprises a first net plate with mesh, and the first net plate is coated with a floating frame with an internal cavity.The scheme of the application has high ecological habit simulation restoration degree, has the ability of resisting typhoons and ocean currents, and can be continuously used in a deep-sea environment.

The utility model discloses a water surface garbage cleaning ship relates to water surface garbage cleaning field, aims at solving the problem of low efficiency of traditional cleaning mode, salvage ship easy to block. The cleaning ship includes the hull, and the first garbage collection device is established to the tail part of ship body, and the second garbage collection device is established to the front part, and the first garbage collection device contains garbage collection warehouse and garbage collection cutting device, and the drainage cutting unit of garbage collection cutting device can smash the garbage, and the collection box is equipped with the filter water body of orifice plate, and the second garbage collection device contains a pair of opposite rotation's collection wheel and conveyor belt device, and the collection wheel gathers the garbage and is transported to the tail part by conveyor belt, and the streamline suspension piece and propeller are established to the both sides of ship body, and still are equipped with the power supply of solar panel and ocean current power generation device. The cleaning ship can efficiently collect, cut and store the garbage, and is anti -block and energy -conserving, and is suitable for river, lake surface and other water area garbage cleaning.

The application discloses a kind of optimal survey line planning method and device for seismic exploration based on ocean current prediction, method includes: obtaining the candidate survey line set in exploration area, obtain the ocean current prediction data in preset planning time window;Establish towed bird angle prediction model, according to ocean current prediction data, determine the expected feather angle and risk index of each candidate survey line in candidate survey line set at each time by using towed bird angle prediction model;According to the expected feather angle and risk index of each candidate survey line in candidate survey line set, screening is carried out according to the first preset constraint condition, determine the feasible time window set of each candidate survey line;According to the feasible time window set of each candidate survey line, the optimization result containing the execution order and time window of each candidate survey line is determined by using the second preset constraint condition and multi-objective cost function, and the survey line pushing instruction set of ship is generated according to the optimization result. The expected feather angle and risk index are actively predicted before operation using ocean current prediction data, and the operation safety is improved.

A deep-sea, unpowered, autonomous burial device and its operating method include a burial rod with an internal cylindrical flow channel and four axially symmetrical horizontal flow channels connected to the cylindrical flow channel around its perimeter. A limiting boss assembly is installed externally on the burial rod, consisting of an upper and lower limiting boss arranged at an interval. A piston assembly is installed inside the cylindrical flow channel. A sliding assembly is fitted onto the burial rod between the upper and lower limiting bosses, and a rotating assembly is installed externally on the sliding assembly. The device uses the force of ocean currents absorbed by a propeller as power input. Through the adaptive deformation of the propeller blades, the propeller repeatedly rises and falls. Combined with the design of the piston, one-way valve, and internal flow channels of the support rod, it achieves intermittent suction of seabed silt at the bottom of the support rod, gradually inserting the support rod into the seabed until complete burial.