22 results about "Ship waves" patented technology

The present application relates to a kind of photovoltaic power generation integrated ship wave shield, regular rectangular deck opening is opened on top plate, and longitudinal and transverse beams are formed between each deck opening;Each deck opening is provided with a photovoltaic panel or transparent glass corresponding to each deck opening;The lower part of adjacent longitudinal is fixedly provided with multiple pairs of truss diagonal bracing, and the bottom end of each pair of truss diagonal bracing is connected to form a connection node, and multiple connection nodes are fixedly connected with truss horizontal bracing along the direction of beam, to form a group of truss diagonal bracing unit;Truss horizontal bracing is fixedly connected with lower wall at both ends;No column is arranged in the space below top plate.The present application can provide sufficient structural support for wave shield without setting support, while reducing the influence on deck equipment, without affecting the passage and operation of personnel.Integrated solar photovoltaic panel is installed on the top of closed wave shield, which can prevent sea waves from entering the ship body, fully utilize the space above wave shield, and use solar power generation to provide additional clean energy for ship.

The invention relates to an operation and maintenance ship wave compensation trestle simulation wind field lap joint test method. The lap joint test method comprises the following steps that a boarding ladder is selected to replace a wind field platform for lap joint of the wave compensation trestle; carrying out safety check and pre-debugging before the test; pulling the operation and maintenance ship to a test area, and positioning the ship at a position 10-25 meters away from the simulated wind pile; the trestle is lifted and rotated, the trestle swings to the direction perpendicular to the ship body, and lap joint is prepared; stretching out the trestle until the end part of the trestle is in contact with the boarding ladder, and automatically switching to a lapping state when the trestle is completely lapped; the lap joint condition is checked; and the mother ship is moved towards the bow, the stern, the left chord and the right chord, and the trestle is kept in lap joint with the boarding ladder. The method has the advantages that the trestle lap joint test is carried out at a company wharf, the boarding ladder tool is used for replacing a wind field platform, the operation and maintenance ship trestle lap joint test time and cost are shortened, the lap joint test cost is reduced, and it is guaranteed that follow-up projects can be smoothly delivered by optimizing the trestle lap joint test process.

The invention provides a polar forecastle ship wave-resisting and anti-freezing ventilation system which comprises an air inlet structure air duct and an air exhaust structure air duct, the air inlet end of the air inlet structure air duct is arranged on the side wall of one broadside of a ship, and the air outlet end of the air exhaust structure air duct is arranged on the side wall of the other broadside of the ship. A plurality of air inlet pipes are connected to the lower portion of the air inlet structure air channel, an air inlet fan is arranged on each air inlet pipe, a plurality of air exhaust pipes are connected to the lower portion of the air exhaust structure air channel, and an air exhaust fan is arranged on each air exhaust pipe. The sides, close to the broadside, of the air inlet structure air channel and the air outlet structure air channel are provided with wave-resisting and anti-freezing assemblies, and the air inlet air pipe and the air outlet air pipe are both located on the sides, away from the broadside, of the wave-resisting and anti-freezing assemblies. The wave-resisting and anti-freezing ventilation system for the polar forecastle ship can meet the sailing requirement in the polar region and under the extremely heavy storm sea condition, the wave-resisting and anti-freezing effects of the ventilation system on an external ventilation opening are remarkable, and the energy-saving design specific to the system is achieved.

This invention relates to an experimental apparatus and method for simulating ship motion under severe sea conditions, belonging to the field of ship wave load testing technology. It addresses the problem that existing severe sea condition wave load testing technologies are insufficient in simulating realistic waves under actual sea conditions, such as high wave heights, distorted waves, and breaking waves. The wave-generating system includes a wave-generating plate located at one end of a water tank and swinging along the length of the tank, and a driving component for driving the wave-generating plate's swing. The nonlinear wave generation system includes a wave-generating rod and several jet pipes. The wave-generating rod is arranged along the width of the water tank and slidably set along the height of the water tank via a height adjustment component. The jet pipes are all located at the bottom of the water tank. This invention enables the simulation of the water-air mixture flow field and accurate measurement of loads in distorted and nonlinear waves under severe sea conditions. It allows for a wide variety of experimental types and diverse functions, and can replace the expensive and costly towing tanks used for general ship models.

The embodiment of the application provides a shaft power generation fuel saving system in a ship power positioning mode, which is applied to the technical field of ship propulsion and control, and comprises: a data acquisition module, which acquires ship wave motion sensing data and generates a three-dimensional wave ship body atlas; a thrust loss prediction module, which predicts the instantaneous immersion depth of a propeller according to the atlas and calculates the instantaneous thrust loss amount in a future time window through a deep learning model; a coordinated control and execution module, which controls the dynamic switching of the shaft power generator between the power generation mode and the electric mode according to the comparison result of the thrust loss amount and a threshold value and sends an unloading signal before switching to the electric mode; and a power grid load management unit, which receives the unloading signal and short-term removes an interruptible load. The application realizes active prediction and dynamic compensation of thrust loss under wave disturbance, stabilizes the main engine speed, recovers energy, guarantees the stability of the power grid through load collaborative management, and improves the safety and economy of ship power positioning operation.

The application discloses a ship wave energy dissipation and wave dissipation arc plate floating structure design method and a period unit structure, belongs to the technical field of floating breakwater, and collects hydrological condition and ship running characteristic data of a water area to be sheltered, including navigation water level h, speed, ship wave height H, wavelength L and ship wave direction, constructs a period unit structure with triple wave dissipation and energy dissipation modules, connects multiple period unit structures to form an arc plate floating structure with a rhythm structure, makes waves have a phase difference in a propagation process, changes a wave propagation path by using wave interference, and dissipates wave energy. The arc plate floating structure has good wave dissipation and energy dissipation effects, the modular design of the period unit structure provides high flexibility, construction convenience and scalability, and the structure layout can be quickly adjusted according to actual needs. The arc plates are sequentially connected to form a rhythm structure, the structure is simple, and the appearance is beautiful. The use of the hollow plates can also reduce material consumption and cost.

The invention discloses a method and a device for creating a viscous spawning site of fishes in a canal, computer equipment and a readable storage medium. The method comprises the following steps: acquiring key habitat parameters of a historical viscous spawning site of target fishes; dividing a to-be-built area into space units, and simulating habitat conditions of each unit by using a numerical model; based on the historical spawning data and the simulated habitat, identifying main environment driving factors influencing spawning; obtaining a suitability curve of each factor through a tolerance test; determining an influence distance by combining ship traveling waves; and constructing a spawning site suitability model, screening a potential building area, and determining an engineering scheme. According to the method, through multi-scale habitat simulation and driving factor coupling, precise site selection and bionic engineering design of a spawning site are achieved, scientific support is provided for canal fish breeding habitat restoration, and the breeding success rate of viscous egg fishes is increased.

The application discloses a high-speed ship wave-resisting stabilizing hydrodynamic force self-adaptive control method and an implementation device, and belongs to the field of high-speed ship wave-resisting stabilizing hydrodynamic force self-adaptive control. The application comprises a stabilizing device, a power driving device, a real-time monitoring module and a hydrodynamic force optimization control module. The stabilizing module comprises a vector water jet propeller for active stabilizing and an appendage for passive stabilizing. The vector water jet propeller is installed at the stern of the ship, can be actively adjusted in multi-angle rotation to form a control surface. The appendage is installed on both sides of the ship body and connected with the ship body through two mutually parallel electric connecting rods. The bottom of the electric connecting rod is connected with the ship body through a multi-angle rotating base. The crank is electrically driven by the hydrodynamic force optimization control module and moves in different directions to drive the connecting rod and the appendage to move horizontally and longitudinally. The sensor and the gyroscope installed on the ship body can obtain the ship body posture, the appendage position and the sea state information in real time. The monitoring data is brought into the hydrodynamic force optimization control system to obtain the optimal solution of the appendage position, and the high-speed ship wave-resisting stabilizing hydrodynamic force self-adaptive control is realized according to the optimal solution of the appendage position.

The invention discloses a method and a system for calculating the maximum wave height of ship traveling waves at the closed end of a ship lift chamber with a middle channel. The method comprises the following steps: determining a navigation path of a ship driving out of a first-stage ship lift chamber and driving into a second-stage ship chamber through the middle channel; acquiring ship parameters and an intermediate channel scale; the maximum navigational speed V of the ship in the channel is determined, and the Froude number is calculated; and substituting the parameters into a dimensionless regression model, and directly calculating the maximum wave height of the closed end of the ship chamber. According to the method, the influence of closed end reflection, fluctuation superposition, channel section coefficient and ship scale coupling is comprehensively considered for the first time, the defects that an existing empirical formula is only suitable for an open water area and neglects the closed boundary effect are overcome, the prediction precision of the maximum wave height of the ship traveling wave of the middle channel of the combined ship lift is remarkably improved, and the prediction accuracy is improved. And a reliable basis is provided for safe operation and channel optimization design of the multi-stage ship lift.

The invention discloses a navigation ship motion parameter extraction method based on wave height time sequence data. Two measuring points are arranged on the same side of a ship navigation main channel by adopting a wave height sensor; the method comprises the following steps: acquiring ship traveling wave time-wave height data in a channel by using double measuring points, and constructing a basic signal set; performing frequency spectrum domain conversion and purification processing on the basic signal set by combining short-time Fourier transform with noise threshold filtering to obtain an effective wave system frequency spectrum matrix; angular frequencies of two measuring points are extracted by adopting a dynamic window peak value detection method in combination with linear fitting aiming at transverse waves, and slopes of the two measuring points are extracted by frequency spectrum matrix binaryzation and improved Hough transform aiming at scattered waves; the ship navigational speed is inverted based on the angular frequency, the vertical distance between the ship and the measuring point is deduced in combination with the scattered wave slope, the navigational direction angle is deduced according to double-measuring-point geometric analysis, the navigational speed, the ship position and the course angle parameters are output, and navigational ship dynamic monitoring without active signal dependence is achieved. According to the invention, high-precision and high-reliability ship dynamic monitoring in a complex scene is realized.

This utility model discloses a wave energy dissipation device suitable for ecological waterways, specifically relating to the technical field of wave dissipation equipment for waterways. It includes a stress-relief component installed on the front side of a fixed plate for wave energy elimination. The stress-relief component includes a support plate installed on the front side of the fixed plate via a support member, and a movable plate is provided on the rear side of the support plate. This utility model designs the movable plate and support plate as arc-shaped, allowing the arc surface to convert the kinetic energy of the water flow into potential energy in the vertical direction. By changing the direction of the water flow, a reverse flow is formed, thereby reducing the positive impact force of the waves. The movable plate dissipates wave energy through the elastic deformation of a spring. Energy dissipation is achieved through dynamic displacement. Simultaneously, the rearward movement of the movable plate creates a gap between it and the support plate, forming a narrow channel. This allows the water flow to reflect multiple times within the gap, consuming energy. Thus, a three-stage energy dissipation mechanism forms an energy attenuation chain, improving the energy dissipation of ship waves.

The embodiment of the application provides a shaft power generation fuel saving system in a ship power positioning mode, which is applied to the technical field of ship propulsion and control, and comprises: a data acquisition module, which acquires ship wave motion sensing data and generates a three-dimensional wave ship body atlas; a thrust loss prediction module, which predicts the instantaneous immersion depth of a propeller according to the atlas and calculates the instantaneous thrust loss amount in a future time window through a deep learning model; a coordinated control and execution module, which controls the dynamic switching of the shaft power generator between the power generation mode and the electric mode according to the comparison result of the thrust loss amount and a threshold value and sends an unloading signal before switching to the electric mode; and a power grid load management unit, which receives the unloading signal and short-term removes an interruptible load. The application realizes active prediction and dynamic compensation of thrust loss under wave disturbance, stabilizes the main engine speed, recovers energy, guarantees the stability of the power grid through load collaborative management, and improves the safety and economy of ship power positioning operation.

This invention relates to the field of waterway engineering technology, specifically to a three-dimensional grid-type revetment structure that actively creates habitats for benthic animals. While meeting the requirements of engineering revetment, it utilizes the energy dissipation of the outer grid surface of the first type of component, and the combination of the internal sheltered cavity, sidewall openings, guide plates, and openings in the second type of component. This allows the reciprocating exchange water flow caused by ship waves to be guided, buffered, and distributed after entering the internal sheltered cavity. This weakens the direct disturbance of the internal sheltered cavity by local accelerated flow, vortices, and turbulence near the openings and grids, providing a relatively stable space for benthic animals to enter, inhabit, and hide. The spatial organization through the openings in the four sides of the block connecting to the internal sheltered cavity provides channels for benthic animals and small aquatic organisms to enter, leave, and utilize the space, while reducing the local flow velocity peaks and turbulence intensity near the openings, thus improving the accessibility and usability of underwater microhabitats.

The invention discloses a water wave surface measurement software and hardware system based on multi-line structured light and a monocular camera, and belongs to the technical field of ship wave surface measurement. The method comprises the following steps: building and calibrating a system, arranging a multi-line laser and a monocular camera to form a hardware system, using a checkerboard marker to fix camera parameters and fitting a laser plane equation; water wave image acquisition: acquiring laser stripe images reflected by water waves; preprocessing the image, and enhancing and denoising the image; stripe center extraction and sorting: extracting stripe center coordinates with sub-pixel precision and carrying out clustering sorting to correspond to a laser plane; and three-dimensional wave surface reconstruction: converting the coordinates into three-dimensional points and carrying out interpolation to obtain wave surface morphology data. According to the method, the multi-line structured light is combined with the monocular vision, so that the interference of the broken wave surface is overcome, the problem of feature matching is avoided, and the high-precision and high-robustness measurement of the high-dynamic water wave transient full-field three-dimensional morphology is realized.

The application relates to a drag reduction prediction model design method based on a longitudinal heterogeneous ship formation and a related device, and belongs to the technical fields of ship engineering and fluid mechanics. The method comprises the following steps: setting longitudinal heterogeneous ship formation numerical simulation parameters in a preset simulation software; adopting a control variable method to design numerical simulation scenes of different formation configurations, determining ship drag coefficients of the longitudinal heterogeneous ship formation under each formation configuration, and analyzing the action law of ship bow flow field velocity and ship wave on shear resistance and differential pressure resistance; and based on the action law, a mixed graph neural network prediction model is used to predict the formation drag of a to-be-formed ship group, wherein the mixed graph neural network prediction model comprises a cooperative architecture encoded by a GATv2 dynamic attention mechanism and a GINE geometric feature. The application can predict and optimize the drag reduction effect of the longitudinal heterogeneous ship formation, and provides a scientific basis and an intelligent decision-making tool for ship formation configuration.

The application discloses a kind of for clinker crane ship wave load direct prediction method, it includes the following steps: establishing hydrodynamic grid model, establishing mass model with the weight distribution of whole ship, by analysis calculation, under regular wave, the velocity potential is obtained;The virtual mass inertia moment of the weight on the clinker crane is obtained by using the offset mass method;Rewrite mass matrix equation;Obtain inertial internal load by calculating hydrodynamic force, and the wave bending moment and wave shear force of the front section of mass section are calculated, and the frequency response function of ship movement and load;By setting short-term sea state and wave spectrum, response spectrum is obtained, and short-term prediction is carried out on response spectrum using spectral analysis method;According to the probability distribution of each short-term sea state in long service life, the long-term load extreme value prediction of ship structure is obtained.The correct wave load of clinker crane ship is successfully obtained;Similarly, the wave load prediction problem of the clinker crane ship with multiple clinker cranes can be solved.

The invention discloses a canal vertical type ecological slope protection structure with wave dissipation and fish trapping functions, which is formed by adjacently arranging a plurality of vertical type ecological slope protection units along the direction of a bank line, each vertical type ecological slope protection unit comprises a front side plate, a rear side plate, a left side plate and a right side plate, a partition plate is arranged in an enclosed space of the four side plates, and a space below the partition plate is used as a fish nest; a plurality of wave dissipation holes are formed in the upper part of the front side plate higher than the partition plate; a fish nest inlet is formed in the lower part of the front side plate; the left side plate and the right side plate extend forwards to form two opposite wing plates; fish nest communicating ports are formed in the left side plate and the right side plate, and the fish nest communicating ports in the two sides are opposite; during installation and arrangement, the wave dissipation plate faces a river channel, and the fish nest is out of the wave height acting range of ship traveling waves; the left side plates and the right side plates of the adjacent vertical ecological slope protection units are tightly attached, and the fish nest communication openings are aligned and communicated. According to the method, ship waves can be reduced, the anti-scouring capacity of the bank slope is guaranteed, and a multi-habitat fusion near-shore ecological system in which fishes, plants and even birds coexist can be constructed.

The present application relates to the technical field of ship wave compensation, in particular to a closed-loop feedback control method and system for a marine wave compensation medical platform, the method comprising the following steps: acquiring the attitude signal of the wave compensation medical platform and constructing a data set, and then constructing a lower platform pose prediction model to obtain the attitude prediction value at the future time; based on the data set and the lower platform pose prediction model, a residual prediction model is constructed to obtain the residual prediction value of the attitude prediction; a kinematics model of the lower platform is constructed, the attitude accurate value is determined through the attitude correction algorithm combined with the attitude prediction value and the residual prediction value, and then the motion back solution algorithm is used to solve the rotation angle of the servo motor, and the closed-loop feedback control of the wave compensation medical platform is realized. The present application can realize accurate control of the wave compensation medical platform in complex environment, improve the wave compensation effect of the wave compensation medical platform, and thus reduce the risk of offshore medical treatment.

The utility model relates to a wave perception technical field, is an unmanned ship wave perception and control auxiliary device based on binocular stereo camera, include: binocular stereo camera group, adjustable support subassembly, tripod support subassembly and integrated box, wherein: binocular stereo camera group is fixed on the triangular support subassembly through adjustable support subassembly, and adjustable support subassembly connects tripod support subassembly through disc, triangular support subassembly is fixed on unmanned ship, binocular stereo camera group, adjustable support subassembly and tripod support subassembly can be stored in integrated box after dismantling. The utility model connects with horizontal adjustment axle through the axle clamp structure and two cameras, realizes that baseline distance is adjustable, and industrial computer connects each hardware module, completes data acquisition, processing, analysis and generates control suggestion.

The application discloses a kind of canal water-gas interface gas mass transfer coefficient acquisition method and device, comprising: placing wave height instrument on target canal and its tributary, monitoring river wave shape;According to the wave shape monitored by Fourier transform, the characteristic wave period of target canal and its tributary is obtained;According to the characteristic wave period of target canal and its tributary, the mean square slope dominated by ship wave of target canal is calculated, and the mean square slope dominated by wind wave is calculated;Based on the mean square slope dominated by ship wave and the grade of target canal, the gas mass transfer coefficient branch mediated by ship wave is calculated;According to the mean square slope dominated by wind wave, the gas mass transfer coefficient branch mediated by wind wave is calculated;Ship wave-mediated gas mass transfer coefficient branch and wind wave-mediated gas mass transfer coefficient branch are added, and as the water-gas interface gas mass transfer coefficient of target canal.The application has high accuracy and high reliability.

This invention discloses a method and system for calculating seawater droplets and predicting icing on polar vessels. The method includes: acquiring data from the polar vessel, inputting it into a ship wave interaction model to obtain predicted seawater droplet data; processing the predicted seawater droplet data to obtain effective seawater droplet data; and inputting the effective seawater droplet data into an icing prediction model to calculate the mass and spatial distribution of ice on the ship surface within a predetermined icing duration. This invention establishes a ship wave interaction model based on smooth particle fluid dynamics, discretizing the continuous fluid into particles carrying physical properties such as mass, velocity, and density. Through the interaction between fluid particles and boundary particles, it performs refined calculations on the generation, movement, and deposition processes of seawater droplets, thereby obtaining the quantitative characteristics of seawater droplets and their spatial distribution information on the ship surface. This improves the reliability and engineering applicability of icing prediction results under complex ship structure conditions.