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87 results about "Naval architecture" patented technology

Naval architecture, or naval engineering, along with automotive engineering and aerospace engineering, is an engineering discipline branch of vehicle engineering, incorporating elements of mechanical, electrical, electronic, software and safety engineering as applied to the engineering design process, shipbuilding, maintenance, and operation of marine vessels and structures. Naval architecture involves basic and applied research, design, development, design evaluation (classification) and calculations during all stages of the life of a marine vehicle. Preliminary design of the vessel, its detailed design, construction, trials, operation and maintenance, launching and dry-docking are the main activities involved. Ship design calculations are also required for ships being modified (by means of conversion, rebuilding, modernization, or repair). Naval architecture also involves formulation of safety regulations and damage-control rules and the approval and certification of ship designs to meet statutory and non-statutory requirements.

Marine equipment drawing identification method and system based on large model

The invention provides a marine equipment drawing recognition method and system based on a large model, and is applied to the field of intelligent analysis and knowledge management of ship engineering. The method comprises the following steps: receiving a marine equipment engineering drawing image, extracting global features through character and line detection after preprocessing so as to identify a drawing type, and combining symbol classification and topological graph construction to determine an equipment connection relationship, performing multi-source information reasoning on the target component by fusing a rule engine and a large language model, and outputting a high-confidence identification result; according to the scheme, the accuracy and the automation level of recognition of the equipment parts in the complex marine drawing can be remarkably improved, and the technical bottlenecks of a traditional method in the aspects of insufficient cross-modal information fusion, limited semantic understanding depth, poor heterogeneous drawing adaptability and the like are effectively solved.
Owner:COSCO SHIPPING GREEN DIGITAL SHIP SERVICES CO LTD

Ship propulsion control system and method

The invention discloses a ship propulsion control system and method, and relates to the technical field of ship engineering.The ship propulsion control system comprises an acquisition module used for acquiring analog quantity signals during ship propulsion, and a main controller module used for receiving the analog quantity signals and generating a propulsion control instruction; according to the ship propulsion control system, two acquisition channels are arranged for analog quantity signals, a fault channel is rapidly detected and switched in combination with a self-checking mechanism, the fault channel can be rapidly detected, the fault channel can be rapidly switched, the fault channel can be rapidly detected, the fault channel can be rapidly switched, and the reliability of the ship propulsion control system can be improved. A digital quantity output channel fault is found in time and switched to a standby channel, a power supply and communication interface backup strategy is perfected, fault priorities are accurately divided, corresponding measures are taken, the strict requirements of modern ships for high reliability and high safety of propulsion control are met, and powerful technical support is provided for stable navigation of the ships.
Owner:TIANJIN WEISHUO TECH CO LTD

Combined marine heat exchanger

The invention discloses a combined marine heat exchanger, and belongs to the technical field of ship engineering, the combined marine heat exchanger comprises two heat exchanger shells, the number of the heat exchanger shells is two, and two fixing discs are fixedly mounted at the positions, close to the top and the bottom, between the inner walls of the heat exchanger shells correspondingly; a plurality of heat exchange tubes are fixedly mounted on the heat exchanger shell through a fixing disc; according to the heat exchanger, the piston rod slides up and down in the piston cylinder in a reciprocating mode to drive the spoiler at the top end of the piston rod to synchronously reciprocate along the outer wall of the heat exchange tube, the spoiler interacts with a shell pass medium in the moving process, and meanwhile the impeller at the top end is driven to synchronously rotate under the impact of the medium; the piston rod drives the spoiler to reciprocate and rotate and disturb the impeller, so that the flow disturbance intensity of a shell pass medium can be enhanced, the flow stability of the medium is broken, a medium retention area on the outer wall of the heat exchange tube is avoided, the heat transfer efficiency is improved, and the stability of the heat exchange performance of equipment is guaranteed.
Owner:HUANGSHI GAONISI THERMAL EQUIP CO LTD

A socket wrench tool and method of use thereof

The present application relates to the technical fields of ship engineering, in particular to a wrenching tool for n-bend joint and a using method thereof, the wrenching tool for n-bend joint comprises a sleeve ring and a wrenching rod, the sleeve ring is detachably sleeved on the outside of the locking sleeve, the circumferential side of the sleeve ring is provided with sleeves at positions opposite to each lug, the first end of each sleeve is arranged towards the center of the sleeve ring, and the first end of each sleeve is sleeved on the outside of each lug; the position of the circumferential side of the sleeve ring provided with the sleeve is connected with a locking mechanism for fixing the sleeve at the position; the first end of the wrenching rod is inserted into the second end of one of the sleeves, and the second end of the wrenching rod extends away from the sleeve ring; when in use, the lugs do not need to be knocked, the vibration generated by knocking the lugs is avoided, and the adverse effects of the n-bend joint on the stability of the pipeline caused by the way of installing or dismounting the lugs by knocking are avoided.
Owner:CSSC HUANGPU WENCHONG SHIPBUILDING CO LTD

Method for calculating hot spot stress at end part of horizontal rod piece for supporting transverse bulkhead

The invention relates to a method for calculating the hot spot stress at the end part of a horizontal rod piece for supporting a transverse bulkhead, which belongs to the field of ship engineering structure design, and comprises the following steps of: calculating through a coarse mesh finite element to obtain node displacement, and determining the hot spot position at the end part of the rod piece; relative displacements of all the horizontal rod pieces are calculated, and then nominal stresses of all the horizontal rod pieces are calculated; or the nominal stress is obtained directly according to the coarse mesh finite element calculation result; combining each stress concentration coefficient corresponding to each hot spot; and calculating the hot spot stress. The invention provides a hot spot stress simplified calculation method based on a coarse grid calculation result (nominal stress) and a stress concentration coefficient, which is beneficial to improving the evaluation efficiency.
Owner:RES INST 708 OF CHINA STATE SHIPBUILDING CORP

Dredging ship energy consumption management and accurate mud suction control method

The invention discloses a dredge ship energy consumption management and accurate mud suction control method, and relates to the technical field of ship engineering and intelligent control, and the method comprises the following steps: collecting a plurality of operation control strategies associated with a dredge ship for performance verification, and filing the optimal control strategy passing the performance verification; based on the received ship operation starting signal, whether operation authority is granted to the ship system or not is judged; and if the ship system is granted by the operation authority, selecting a reference regulation and control scheme of the ship from the archived optimal control strategy, and issuing a first regulation and control instruction to the ship system. Through performance verification, only the control strategy is archived and optimized, compatibility of the strategy and the ship working condition is ensured, the abnormal risk in the mud suction process is reduced, and the operation efficiency is improved; based on threshold comparison of the energy efficiency improvement rate and the stability index, data-driven strategy optimization is realized, the unit operation energy consumption can be averagely reduced, and the resource utilization rate is improved.
Owner:CCCC GUANGZHOU DREDGING CO LTD +1

CFD (computational fluid dynamics) method-based seaplane gas-water power decoupling cooperative solving method and asynchronous coupling and high-fidelity simulation method thereof under unsteady condition

The invention discloses a CFD (computational fluid dynamics) method-based seaplane gas-water power decoupling cooperative solving method and an asynchronous coupling and high-fidelity simulation method thereof under an unsteady condition, belongs to the technical field of ship engineering structure aerodynamic force and water power calculation, and aims to solve the problem that in the prior art, when solving the problem of hydroplaning of a seaplane, the problem of the prior art is solved. And pneumatic and hydrodynamic loads need to be solved at the same time. According to the method, aerodynamic force is solved by adopting a single-phase flow solver, and unsteady aerodynamic responses of wings and a fuselage of the seaplane during hydroplaning are captured; a two-phase flow solver is adopted to simulate the nonlinear hydrodynamic behavior of the fuselage of the seaplane in waves; a single-phase flow solver based on aerodynamic force and a two-phase flow solver based on hydrodynamic force are iterated on different time steps for decoupling cooperative solution, and the stress characteristic and motion response of a seaplane under the wave working condition are accurately simulated.
Owner:HARBIN ENG UNIV

Resistance reduction effect AI control method and system for natural-ventilation mixed cavitation hydrofoil

The embodiment of the invention provides a drag reduction effect AI control method and system for a natural-ventilation mixed cavitation hydrofoil, and relates to the technical field of ship engineering. Executing a cavitation flow experiment to obtain an input data set and an output data set; performing feature extraction based on the input data set and the output data set to obtain a cavitation coverage area rate, a flow field instability feature parameter, an interface evolution stability index and a signal cavitation index, and integrating into a response data set; constructing a comprehensive data source set based on the input data set, the output data set and the response data set; and determining the influence level of the current ventilation behavior based on the response data set, and determining an optimal design scheme based on the influence level and the comprehensive data source set. The method overcomes the limitation that a traditional static black box model only depends on an input-output relation and lacks process feedback, and effectively distinguishes operation states which are temporarily low in resistance but about to be unstable from operation states which are really stable and efficient.
Owner:BEI JING NORMAL UNIV HONG KONG BAPTIST UNIV UNITED INT COLLEGE

A wave-resistant watertight structure for a ship

The application relates to the technical field of ship engineering, and discloses a wave-blocking water-tight structure for a ship, the ship comprising a bow house deck, the bow house deck being provided with deck machinery, and comprising the following components: a wall plate assembly, which is installed on the bow house deck; and a wave-blocking shell, which is installed on the bow house deck, the rear end of the wave-blocking shell being connected to the wall plate assembly, the wave-blocking shell, the wall plate assembly and the bow house deck jointly defining a protection cavity, and the deck machinery being accommodated in the protection cavity. The wave-blocking water-tight structure for the ship can effectively improve the sealing performance of the bow house deck area, realize all-around protection of the deck machinery, and optimize the buoyancy distribution and the navigation stability of the ship.
Owner:GUANGZHOU WENCHONG SHIPYARD CO LTD

Sail control system and method based on distributed flexible sensing

The application provides a kind of based on distributed flexible sensing sail control system and method, belong to ship engineering and automatic control technical field, its system includes: sail;Distributed flexible sensor array, for real-time synchronous measurement of the pressure signal of different positions of sail surface;Signal acquisition and processing unit, electrically connected with the distributed flexible sensor array, for processing the pressure signal collected, and calculating a set of characteristic parameters;Sail health monitoring and early warning unit, for analyzing strain signal, evaluating the structural health state of sail surface and generating early warning;Intelligent controller is used to generate attitude adjustment instruction according to the deviation between the set of characteristic parameters calculated in real time and the set of target parameters, combined with the intelligent identification result of aerodynamic state;Sail surface driving structure, for adjusting the attitude of the sail according to the attitude adjustment instruction generated by the intelligent controller.The application improves the aerodynamic efficiency of the sail, the control accuracy and the sailing safety.
Owner:WUHAN UNIV OF TECH

A method for closing a ship section based on a floating platform

This invention belongs to the field of marine engineering technology, and specifically discloses a method for assembling ship sections based on a floating platform. Using the unified hull coordinate system of the ship design as a reference, the method sequentially completes the survey of the common reference system of the section to be assembled and the floating platform, the three-dimensional measurement and assembly simulation of the section, the pre-repair of the port, the transfer and positioning of the left section and the reference locking, and the alignment of the right section, and finally completes the assembly and docking of the two sections, realizing zero-interference one-time assembly of large ship sections on the floating platform.
Owner:CSSC HUANGPU WENCHONG SHIPBUILDING CO LTD

A marine propulsion control system and method

The application discloses a kind of ship propulsion control system and method, it is related to ship engineering technical field, including acquisition module for collecting analog signal when ship propulsion, main controller module is used to receive analog signal, and generates propulsion control instruction, the main controller of ship propulsion control system is also integrated with double acquisition unit, back detection unit, backup unit and self-checking unit for fault self-checking, execution module is used to execute propulsion control instruction, the present application sets up two acquisition channels for analog signal, combined with self-checking mechanism, detects fault channel and switches quickly, detects digital output channel fault and switches to standby channel in time, improves power supply and communication interface backup strategy, accurately divides fault priority and takes corresponding measures, meets the stringent requirements of modern ship to propulsion control high reliability and high safety, provides strong technical support for the stable navigation of ship.
Owner:TIANJIN WEISHUO TECH CO LTD

Ocean container transport ship design system and method based on digital twinning

The invention discloses an ocean container transport ship design system and method based on digital twinning, and belongs to the technical field of ship engineering and digital twinning. The method aims at solving the technical problem that traditional finite element analysis cannot provide real-time feedback due to massive working condition combinations in the design process of the ocean container transport ship. The system and the method comprise the following steps: constructing a standardized topological domain for unifying different ship type variants; a high-fidelity full-component stress tensor sample set under the working condition of a small number of anchor points is calculated in an off-line mode; performing orthogonal decomposition on the sample set, and extracting a group of orthogonal stress bases carrying dimensional information; in the design interaction stage, the system predicts a dimensionless modal coefficient through a pre-training model according to design parameters such as a hull geometric variant, a stowage scheme and a sea condition input by a designer, performs linear weighted stacking on the dimensionless modal coefficient and a stress base, reconstructs a full-field stress tensor of a hull structure in real time, and generates a visual evaluation result.
Owner:ZHEJIANG XINZHOU SHIPBUILDING CO LTD

Engine room ventilation system and ship

The invention belongs to the technical field of ship engineering, and discloses an engine room ventilation system and a ship, the engine room ventilation system comprises a chimney arranged on a deck, the chimney is communicated with the interior of an engine room, and the chimney is used for discharging waste gas; the fan chamber is arranged in the chimney, the fan chamber is defined by a surrounding wall structure and the inner side wall of the chimney, the surrounding wall structure is connected to the inner side wall of the chimney, the surrounding wall structure is provided with a first ventilation opening and a second ventilation opening, the fan chamber is communicated with the interior of the cabin through the first ventilation opening, and the fan chamber is communicated with the interior of the cabin through the second ventilation opening. The fan chamber is communicated with the interior of the chimney through the second ventilation opening; a fan is arranged in the fan chamber and used for supplying air to the interior of the cabin or exhausting air to the interior of the cabin. According to the engine room ventilation system and the ship, the problems that functional equipment of a ship deck is dense and the arrangement space is compact are solved.
Owner:CSSC HUANGPU WENCHONG SHIPBUILDING CO LTD

Energy-saving tubular heat exchanger for ships

The application relates to the technical field of ship engineering and heat energy engineering, and discloses an energy-saving shell-and-tube heat exchange device for a ship, which comprises a base support, a pipe cylinder, a pipe opening, an end cover one, an end cover two and an energy-saving slag removing mechanism, the energy-saving slag removing mechanism comprises a floating energy-saving mechanism, a displacement rotating mechanism, a rotating stirring mechanism and a swing rocker mechanism, the floating energy-saving mechanism is arranged, the four-stage buoyancy amplifying mechanism is formed by connecting the cylinder and the rotating piece through the float and the inclined push rod, the tiny wave displacement is converted into the stroke of the straight push rod, a low-energy-consumption mode different from the traditional energy consumption is realized, the rotating stirring mechanism is arranged, the strong shear turbulent flow is formed in the pipe cylinder, the pipe wall boundary layer is cut, compared with the traditional laminar flow condition, the shell side convection heat transfer coefficient is improved by half, the energy-saving slag removing mechanism is particularly suitable for high-viscosity fluid, and the six energy-saving slag removing mechanisms are uniformly distributed and work cooperatively, the heat exchange dead zone is eliminated, local overheating or overcooling is avoided, and the temperature difference utilization efficiency is improved.
Owner:NANTONG ELITE MARINE EQUIP & ENG

Marine machinery working performance evaluation method and device and electronic equipment

The invention relates to the technical field of ship engineering and performance monitoring, in particular to a ship machinery working performance evaluation method and device and electronic equipment. According to the technical scheme, the method comprises the steps of obtaining multi-dimensional evaluation parameters of the ship machinery, wherein the multi-dimensional evaluation parameters comprise fuel economy, navigation efficiency, propulsion performance and power system stability; the result of each evaluation dimension is calculated based on a preset algorithm, the result is visually displayed in a radar map form, a user can select a specific dimension on a map to check detailed parameters and historical trends, rapid positioning of performance anomalies is achieved, and the corresponding device comprises a parameter acquisition module, a result calculation module and a visual display module. The electronic equipment implements the method by executing a program through a processor. Through multi-dimensional comprehensive evaluation and visual interaction analysis, comprehensive, visual and accurate evaluation and efficient problem positioning of the working performance of the ship machinery are realized, and the operation management and decision-making efficiency is remarkably improved.
Owner:HUBEI DONGHU NEW ENERGY TECH CO LTD

A heat insulation structure design method and heat insulation structure for a deep-sea ship refrigerator

This application relates to a design method and structure for a thermal insulation structure of a deep-sea vessel cold storage, belonging to the field of deep-sea vessel engineering technology. The method includes the following steps: A flexible thermal insulation layer and a connecting assembly are disposed between a metal wall panel and a decorative panel. The connecting assembly is disposed within the flexible thermal insulation layer and includes a rigid connector and an elastic connector. One end of the rigid connector is connected to the outer side of the metal wall panel, and the other end is connected to the elastic connector. The other end of the rigid connector is spaced a predetermined distance from the decorative panel. The elastic connector is connected to the decorative panel. When pressure acting on the metal wall panel is transmitted to the elastic connector, the elastic connector deforms and compresses, and the maximum elastic compression of the elastic connector is less than the predetermined distance. The maximum elastic compression of the elastic connector is obtained based on its parameters. The predetermined distance range between the decorative panel and the end of the rigid connector is obtained based on the maximum elastic compression of the elastic connector. This method solves the problems of the prior art.
Owner:CHINA STATE SHIPBUILDING CORP LTD RESEARCH INSTITUTE 719

An explosion-proof depressurization system for ship compartments and its control method

This invention relates to the field of marine engineering technology and discloses an explosion-proof pressure relief system and its control method for ship cabins. The cabin includes a wall panel with a vent. The system includes: a sealing gasket surrounding the vent on the wall panel; a sealing plate abutting the outer end of the sealing gasket; a clamping assembly including a gas cylinder, a cylinder, a pressure relief valve, a first solenoid valve, and a second solenoid valve. The piston rod end of the cylinder abuts against the outer end of the sealing plate. The pressure relief valve is located in the rodless chamber of the cylinder. A first pipeline connects the gas cylinder to the rodless chamber of the cylinder, and a second pipeline connects the gas cylinder to the cabin. The first solenoid valve is located in the first pipeline, and the second solenoid valve is located in the second pipeline. The gas cylinder contains inert gas. A control assembly is electrically connected to the pressure relief valve, the first solenoid valve, and the second solenoid valve. The explosion-proof pressure relief system and its control method for ship cabins provided by this invention can maintain stable pressure within the cabin and also address fire hazards.
Owner:GUANGZHOU DESIGN & RES INST OF SHIPS & MARINE ENG

Blade-free water jet propulsion device

The invention discloses a bladeless water jet propulsion device, and relates to the technical field of ship engineering or underwater propulsion, the bladeless water jet propulsion device comprises a support and a shell, the shell is provided with two fluid inlets and outlets, and the two fluid inlets and outlets are respectively a water inlet and a water jet; the shell is internally provided with a pressurizing chamber, the pressurizing chamber is communicated with the water inlet and the water injection nozzle, and the shell is rotationally connected with a crankshaft and a double-cavity partition plate which are coaxial with the pressurizing chamber; the two sides of the crankshaft are each fixedly provided with two peristaltic wheels, and the peristaltic wheels located in the portions, on the two sides of the double-cavity partition plate, of the pressurizing cavity are coaxially arranged on the crankshaft. The pressurizing chamber is in a cylindrical shape, and the peristaltic wheel is in a cylindrical shape. According to the novel blade type propeller, the inherent technical problem of a traditional blade type propeller is fundamentally solved, the safety, reliability and environmental adaptability of equipment are remarkably improved, and due to the fact that exposed rotating blades are abandoned, the propelling failure or overload risk caused by the fact that the blades are wound by sundries such as aquatic plants, fishing nets and floating objects is thoroughly eliminated.
Owner:XIAOFANGYUAN (HEBEI) MACHINERY EQUIPMENT MANUFACTURING CO LTD

Device and method for testing impact resistance and resistance coefficient of ship body

The invention discloses a device and method for testing impact resistance and resistance coefficient of a hull, and belongs to the technical field of ship engineering.The device comprises a frame and waterproof canvas, the waterproof canvas is arranged in the frame, and a hull model, a first wave maker and a wave environment simulation mechanism are arranged in the waterproof canvas; a model launching mechanism, a speed data acquisition mechanism and a horizontal impact simulation mechanism are arranged between the frame and the ship body model, a limiting mechanism is arranged on the frame, and a vertical impact simulation mechanism is arranged on the outer side of the frame. The device and the method for testing the impact resistance and the resistance coefficient of the ship body aim at providing an efficient, stable and integrated test platform, so that the impact resistance and the water flow resistance can be measured at the same time, the test process is simplified, and the test efficiency is improved.
Owner:CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY

Method for predicting real ship performance by using ship model test

PendingCN121106614AVessel designingSeakeepingClassical mechanics
The invention relates to the technical field of ship engineering, in particular to a method for predicting the performance of a real ship by utilizing a ship model test, which comprises the following steps of: S1, designing and manufacturing a model; s2, resistance testing; s3, carrying out seakeeping test; s4, testing the maneuverability; the ship initial model framework is constructed according to the size of the ship body of the actual ship, the ship initial model framework is filled to obtain the ship initial model, and then the ship model is obtained by adjusting the balance of the ship initial model. The comprehensive performance evaluation coefficient of the ship model is obtained according to the resistance, seakeeping and maneuverability analysis of the ship model, the comprehensive performance evaluation of the ship model is fed back, the actual situation of the ship can be accurately simulated, potential problems can be found in advance, targeted improvement can be conducted, and the performance of the ship can be optimized.
Owner:武汉长江船舶设计院有限公司

Hydrofoil craft and using method thereof

The invention relates to the technical field of ship engineering, in particular to a hydrofoil craft and a using method of the hydrofoil craft, the hydrofoil craft comprises a craft body, swing pieces, floating bodies, a first power generation mechanism and propellers, the swing pieces are connected to the left side and the right side of the craft body in an up-down rotating mode, and the floating bodies are connected to the ends, away from the craft body, of the swing pieces; the floating body comprises a resistance reducing part and a floating increasing part, the front end of the resistance reducing part is sharp, the section of the resistance reducing part is gradually increased from front to back, and the floating increasing part is connected to the rear end of the resistance reducing part; the first power generation mechanism comprises hydraulic cylinders and a hydraulic power generation device, the hydraulic power generation device is arranged on the boat body, the hydraulic cylinders are hinged to the left side and the right side of the boat body correspondingly, and the ends, away from the boat body, of the hydraulic cylinders are hinged to the corresponding swing parts correspondingly. Hydraulic oil in the hydraulic cylinder drives the hydraulic power generation device to generate power; the hydraulic power generation device supplies power to the propellers, and the cruising ability of the hydrofoil craft is improved.
Owner:SUN YAT SEN UNIV

Ship recovery cabin fragment protection buffer device

The invention provides a fragment protecting and buffering device for a ship recovery cabin, and relates to the technical field of ship engineering, the fragment protecting and buffering device comprises a rubber buffering block body, a middle protecting steel plate is fixedly mounted on the top end face of the rubber buffering block body, a top protecting steel plate is arranged above the middle protecting steel plate, and the middle protecting steel plate and the top protecting steel plate are fixedly connected. Five glass tubes are inserted in the gap area corresponding to the two non-woven fabric pads, when the device is subjected to effective collision, red warning solutions filled in the glass tubes can be broken and flow out along with the glass tubes and rapidly diffuse to the non-woven fabric pads through the liquid guide grooves of the middle protection steel plate, the non-woven fabric pads are dyed, the length of the liquid guide grooves covers the range of the observation opening, and the observation effect is good. The dyeing effect can be visually checked through the observation opening of the top protection steel plate, whether collision occurs or not can be judged without dismounting the device, and the problem that a traditional protection device lacks an effective collision warning mechanism is solved.
Owner:WUHAN UNIV OF TECH

Hydraulic ship gangway

This utility model provides a hydraulic ship gangway, belonging to the field of marine engineering technology. It includes an installation mechanism for achieving a stable connection between the gangway and the ship's deck; a fixing component, mounted on the installation mechanism, for enhancing the overall structural stability and adjustability of the gangway; a drive mechanism, located on one side of the installation mechanism, for providing power support for the gangway's deployment and retraction; and an adjustment assembly, including a first cylinder and a fixing frame. The first cylinder is mounted on the installation mechanism via the fixing frame and is used to control the lifting angle and tilt adjustment of the gangway's main body. This utility model, through its high-strength installation mechanism, detachable fixing component, dual-cylinder hydraulic drive system, and multi-section nested extension rod structure, improves the automated control capability, adjustment flexibility, and overall structural stability of the ship gangway, effectively solving the technical problems of poor adaptability, inconvenient operation, and low safety associated with traditional ship gangways.
Owner:JIANGYAN OUYA CHUANBOXI INSTR FACTORY

Intelligent forecasting method for ship movement

The invention specifically discloses a ship motion intelligent forecasting method, and relates to the technical field of ship engineering. The method comprises the following steps: S1, acquiring ship navigation data including ship basic information and sea area wave spectrum basic information; s2, acquiring time sequence data including ship motion historical time sequence data and environment historical time sequence data; s3, constructing a ship motion intelligent forecasting model based on an improved Informer algorithm; s4, inputting ship motion time sequence data and environment time sequence data based on the ship motion intelligent forecasting model, and outputting a ship motion speed forecasting result of six degrees of freedom; and S5, carrying out anti-standardization operation on the output forecasting result to obtain a final ship motion forecasting result. According to the method, the ship motion forecasting precision and universality of different ship types in the complex marine environment are remarkably improved, and reliable technical support is provided for safety guarantee of ship navigation, improvement of operation efficiency, marine operation collaboration and the like.
Owner:TIANJIN UNIV

Ship tail shaft and mounting method thereof

The invention belongs to the technical field of ship engineering, and particularly relates to a ship tail shaft and an installation method thereof. The ship tail shaft comprises a ship body and a steel wire, the tail shaft comprises platform plates, the tail shaft is formed by splicing a plurality of platform plates, a shaft bracket structure is arranged on the tail shaft, the shaft bracket structure is connected with the ship body, and a supporting structure is arranged on the tail shaft; platform plates are manufactured in a segmented mode, and the platform plates, the front stern shaft bracket plate and the rear stern shaft bracket plate are spliced together to form a stern shaft. The invention further provides an installation method for the ship tail shaft, and the installation method is convenient for operators to understand and use.
Owner:WUHU SHIPYARD CO LTD

A multi-dimensional static load simulation device and design method for a marine propulsion shafting

The application belongs to the technical field of ship engineering, and discloses a multi-dimensional static load simulation device for a ship propulsion shaft system and a design method. The design steps are as follows: calculating the minimum size of the internal thread cylindrical pin used for the fixed sliding groove platform; calculating the minimum size of the screw used for the fixed T-shaped nut; checking the thread connection strength on both sides of the standard force sensor; improving the static load simulation device in consideration of the multi-dimensional force loading accuracy. The hydraulic cylinders are reasonably configured, and have the functions of independently or simultaneously exerting multi-dimensional force and torque, controlling the three-directional freedom of the hydraulic cylinders, and ensuring the force and torque loading accuracy. The multi-dimensional static load working condition simulation task can be completed, and the loading direction fine adjustment task of the convenient hydraulic cylinder can be completed by changing the installation position of the mechanical structure.
Owner:DALIAN UNIV OF TECH

Shallow water adaptive navigation control system for web contact trackless electric ship

The application provides a shallow water self-adaptive navigation control system for a contactless trackless electric ship, and relates to the technical field of ship engineering, and comprises: an acquisition module, which is used for acquiring water depth information of a water area where the ship is located in real time; based on the water depth information, a preset shallow water threshold is used for judgment to obtain a shallow water state signal of whether the ship is in a shallow water navigation state; a measurement module, which is used for acquiring real-time measurement data of three depth measurement sensors arranged at a bow and two sides of the ship according to the shallow water state signal, and constructing a reference geometric structure according to the measurement data. The application realizes the dual protection of stable ship navigation posture and continuous contact power supply under shallow water conditions.
Owner:TIMES TIANHAI TECHNOLOGY CO LTD

A real-time control and monitoring system for a controllable pitch propeller of a ship

The application discloses a kind of real-time control and monitoring system of ship controllable pitch propeller, it is related to ship engineering technical field, including construction module is used to calculate load disturbance pre-judgment value using load disturbance observation model, load disturbance pre-judgment value is converted into feedforward instruction, adjustment module is used to adjust the pitch angle of ship controllable pitch propeller according to feedforward instruction, compensation module is used to calculate the final moment residual error signal of ship controllable pitch propeller hydraulic actuator, correction module is used to update dynamic correction coefficient in load disturbance observation model, obtain final correction parameter, the present application is introduced into closed loop calibration mechanism and online correction algorithm, according to final moment residual error signal, dynamically corrected coefficient is updated in real time, according to the residual error signal of actual hydraulic pressure and theoretical pressure, model parameter is automatically adjusted, by the sensitivity analysis based on gradient change rate to dynamically adjust step, can identify and lock parameter abnormal mutation in time, greatly enhance the safety and reliability of system.
Owner:TIANJIN WEISHUO TECH CO LTD

A pipe self-adaptive grabbing device

The utility model discloses a pipeline adaptive gripping device belongs to ship engineering and port technical field, and its technical scheme main points include crawler type mobile base, the top fixed connection of crawler type mobile base has industrial logistics mechanical arm, the outside swing joint of industrial logistics mechanical arm has adaptive gripping mechanism, can adopt the crawler type mobile base and industrial logistics mechanical arm of carrying remote control module, cooperate front end adaptive gripping structure to replace 2-3 ship worker's manual hoisting with automatic operation, need not use the steel wire rope on fixed welding frame and hook the pipe mouth, have improved the efficiency, reduced the dangerous nature, and also played the advantage of modern technology in the aspect of safety, automation and intelligent, thereby solved the problem that the original manual operation exists low efficiency, high risk and does not embody the modern technology advantage, can promote the stability, adaptability and safety of gripping.
Owner:NANJING GMINNOVATION TECH CO LTD