1039 results about "Deep sea" patented technology

The invention discloses a floating wind power platform self-energized carbon capture and deep sea sealing integrated system, which comprises a floating platform foundation, which comprises a plurality of buoy parts, and the buoy parts are integrated through connecting parts; the double-path carbon capture subsystem comprises an air carbon capture module and a seawater carbon capture module; the air carbon capture module introduces air into the adsorption module through negative pressure, and selectively adsorbs CO2 in the air; the seawater carbon capturing module is used for separating out CO2 from seawater in an electrochemical separation mode; the carbon sequestration subsystem is used for compressing, liquefying and sequestration the CO2 conveyed by the double-path carbon capture subsystem; and the wind power function subsystem comprises a wind power generation tower and power distribution equipment for supplying power to each subsystem. The platform is reasonable in configuration and high in function integration degree, has the advantages of wind energy driving, autonomous operation, continuous carbon capture, on-site storage and the like, is particularly suitable for deep and far sea areas without seabed pipe networks and far away from shore-based power grids, and can be used for application scenes such as wind power plant carbon compensation and ocean carbon removal.

The invention discloses a method for completing an autonomous deep-sea exploration task by a deep-sea cross-domain unmanned aerial vehicle. The method comprises the following steps: determining a target area; taking off to a specified height from the sea level, receiving a task execution command and then flying to a target area; when the relative distance between the current position and the coordinates of the target area reaches a preset value, descending; when it is detected that the device is contacted with seawater, the device dives through gravity; when it is detected that the set depth is reached, the propeller is restarted, and the detection task is executed; after the detection task is completed, the standby battery is rejected and ascends; after leaving the water surface, rising to a specified height and switching to a homeward flight mode; and when the deep-sea cross-domain unmanned aerial vehicle is within the sight distance range, a manual landing task is executed. The invention further discloses the deep-sea cross-domain unmanned aerial vehicle. According to the unmanned aerial vehicle and the method, autonomous switching operation between an air medium and an underwater medium can be realized, and the unmanned aerial vehicle has the capability of autonomously completing detection and water body sampling in an extreme deep sea environment.

The invention discloses a deep sea underwater integrated electro-hydraulic actuator system adopting pump and valve combination. The deep sea underwater integrated electro-hydraulic actuator system comprises a hydraulic cylinder, a pump control assembly and a valve control assembly. The pump control assembly comprises a metering pump, a first switch valve and a second switch valve; the valve control assembly comprises a large-flow proportional valve, a small-flow proportional valve, a deep sea compensation energy accumulator and a third switch valve. The metering pump, the first switch valve and a rod cavity of the hydraulic cylinder are sequentially connected through a pipeline, the metering pump, the second switch valve and a rodless cavity of the hydraulic cylinder are sequentially connected through a pipeline, the metering pump, the third switch valve and the deep sea compensation energy accumulator are sequentially connected through a pipeline, and the rodless cavity of the hydraulic cylinder is connected with the large-flow proportional valve and the small-flow proportional valve through pipelines. Two control modes of the actuator can be completed, large-flow control is achieved through the pump control assembly, high efficiency and energy conservation are achieved, flow needed by maintenance is supplied to a rodless cavity of the actuator through the valve control assembly via the large-flow proportional valve and the small-flow proportional valve, and posture keeping and emergency action are achieved.

The invention provides a Yangtze river export deep and far sea environment data association analysis method based on multi-modal fusion, belongs to the technical field of far sea environment analysis, and achieves accurate data registration by establishing a multi-source data space-time standardization model and adopting an adaptive space-time Kriging interpolation algorithm. A sparse coding ocean signal separation algorithm is utilized to construct an over-complete dictionary separation mixed signal to extract pure features, a feature extraction network is constructed based on an attention mechanism to automatically learn deep feature representation of physicochemical biological parameters, and a matrix rank loss detection algorithm is adopted to automatically supplement feature compensation vectors to ensure feature integrity. A cross-scale attention mechanism is constructed based on wavelet transform to fuse multi-scale features, a Shapley value interpretability evaluation system is established to quantify correlation feature importance, and the technical problem that correlation feature extraction is inaccurate in the multi-source heterogeneous marine environment data fusion process is solved.

The invention relates to the technical field of deep-sea mining, and discloses an extrusion rotary type deep-sea multi-metal nodule low-disturbance collecting device which comprises a set of skid mechanisms formed by all-terrain skid plates arranged side by side, all-terrain skid plates are connected with direction skid through steering pull rods, each skid mechanism is provided with a grating storage cabin, and the grating storage cabins are connected with the all-terrain skid plates through steering pull rods. The inlet end of each grid storage bin is connected with a grid pressing shovel installed on the skid mechanism through a rotary collecting head. According to the invention, the all-terrain skid plates are used as walking mechanisms, so that low-disturbance advancing can be realized on one hand when the multi-metal nodules are collected by walking, and on the other hand, the advancing direction and operation attitude can be adjusted in real time by the cooperation of the multiple groups of all-terrain skid plates, so as to meet different collection requirements of the multi-metal nodules; meanwhile, a combined structure of the grating pressing shovel, the rotary collection head and the grating storage cabin is taken as a core, so that the multi-metal nodule in a buried or semi-buried state can be shoveled up in a low-disturbance manner, and environment-friendly collection is realized.

The invention provides a driving and sensing integrated soft claw, gripper and method, and belongs to the field of deep sea soft grippers. The problems that a traditional soft gripper sensor is prone to forming stress concentration and cannot achieve multi-point sensing are solved. The driving and sensing integrated soft claw comprises a sensing layer, an acoustic wave guide main flow channel extending in the length direction is arranged on the sensing layer, and an ultrasonic transducer is arranged on the side, close to the fixed end of the sensing layer, of the acoustic wave guide main flow channel. The end face of one side of the sensing layer is a grabbing face, and a plurality of evenly-arranged protrusions are arranged in the acoustic wave guide main flow channel corresponding to the end face. And the driving layer is arranged on the side, away from the grabbing face, of the sensing layer, a plurality of deformation cavities communicating with the acoustic wave guide main flow channel are formed in the driving layer, the driving layer is in a stretching state in a normal state, and when the deformation cavities are filled with liquid and pressurization continues, the deformation cavities are used for deforming to drive the sensing layer to bend. The manipulator is mainly used for grabbing actions.

The invention relates to the technical field of trailing cables, and discloses a high-tensile-strength lightweight deep sea trailing cable, which is characterized in that the outer side of a copper conductor is coated with an insulating layer, the periphery of an inner support piece is coated with a heat dissipation layer capable of uniformly transferring heat, the outer side of the heat dissipation layer is provided with a waterproof layer capable of blocking and preventing water, the waterproof layer is embedded in the inner side of a tensile inner layer, and the tensile inner layer is provided with a waterproof layer. According to the invention, the heat transfer and heat dissipation capability in the cable is effectively improved, the passive water blocking and active water stopping capability in the cable is enhanced, the tensile inner layer endows the cable with excellent tensile strength, and the pressing layer greatly improves the pressure resistance and compression resistance of the cable, so that the cable has the capability of stable operation in severe environments of high pressure and low temperature in deep sea, and the service life of the cable is prolonged. In addition, a light-weight fiber material is used for replacing a traditional metal material, the high tensile property is guaranteed, meanwhile, light weight of the cable is achieved, the dragging resistance is reduced, and the comprehensive use requirement for high tensile strength and light weight is met.

The invention relates to the technical field of deep-sea polymetallic nodule resource assessment methods and systems, provides a deep-sea polymetallic nodule resource assessment method and system, and effectively solves the problems that overlapped areas among polymetallic nodules are easy to cover by silt, are located at the edge parts of the polymetallic nodules, are fused with a seabed background, and are not easy to damage. And complete filling cannot be performed through an expansion algorithm, so that the accuracy of the finally calculated coverage rate is not high.

The invention relates to a three-dimensional sea temperature monitoring method, and the method comprises the steps: predicting a residual error through a sea surface temperature reconstruction model based on low-resolution sea temperature background data, meteorological data and geographic feature data of a to-be-monitored sea area, superposing the residual error with the low-resolution sea temperature background data, and obtaining a high-resolution sea temperature parameter of each region of a sea surface; and the precision and the physical consistency of the sea surface temperature parameters are improved. In deep sea temperature inversion, based on biochemical environment data and high-resolution surface sea temperature parameters, sea temperature parameters of all depth areas of a sea area to be monitored are predicted through a deep sea temperature prediction model, and a heat exchange rule is reflected more accurately. According to the method, surface reconstruction and deep inversion are combined, an association connection mechanism is established, information collaborative integration is achieved, complete and coherent three-dimensional sea temperature data are output, and reliable support is provided for applications such as ocean heat transfer calculation.

The invention relates to the technical field of communication power connection, in particular to a magnetic coupling connector assembly for deep sea wet plugging, which comprises a socket component and a plug component, wireless power supply coils and communication modules are arranged at the front ends of the socket component and the plug component, and a first annular magnet array is arranged at the front end of the socket component. A second annular magnet array is arranged at the front end of the plug component, and magnetic poles at the same position of the first annular magnet array and the second annular magnet array are oppositely arranged; and a rotary locking mechanism is arranged between the socket component and the plug component and is used for realizing mechanical locking through relative rotation after the socket component and the plug component are magnetically adsorbed. By adopting the design that the annular multi-pole magnet array and the mechanical rotary locking mechanism cooperate with each other, magnetic force provides adsorption force during butt joint and is converted into locking force after locking, self-alignment and high-reliability locking in the butt joint process are completed, and the technical effect of environment interference resistance is achieved.

The invention relates to a multi-domain collaborative ocean emergency rescue method, which solves the technical problems of short endurance, small operation range and low recognition accuracy of persons in distress when an unmanned aerial vehicle or an unmanned ship or an underwater robot is adopted to carry out a search and rescue task in the prior art, and combines the unmanned aerial vehicle, the unmanned ship and the underwater robot for mutual cooperation. The unmanned aerial vehicle carries out investigation traversal in the air to find a search and rescue target, the unmanned aerial vehicle gets close to the search and rescue target and sends the position information of the target to the control center, the unmanned ship sails to the position of the target, the at least two underwater robots are transferred along with the unmanned ship, and the unmanned ship controls the at least two underwater robots to work cooperatively. The method can be widely applied to deep ocean emergency rescue, and an'air-sea-submerged 'multi-domain cooperative new normal form is formed.

The invention discloses a small hole heat conduction and gas migration channel construction system and method based on seabed horizontal directional drilling, and relates to the technical field of ocean engineering and energy exploitation. A sea surface operation module is used for controlling all modules of the system to work cooperatively and supplying energy to the system; the seabed drilling guide module is used for realizing layer-entering drilling and channel pre-construction; the signal detection module is used for monitoring the spatial position and attitude parameters of the seabed drilling guide module in a seabed bottom layer in real time; the small hole perforation flow guide module is used for constructing a heat conduction and gas migration channel network after the drill bit enters a target hydrate layer; after the heat conduction and gas migration channel network is formed, the seabed drilling guide module continues to drill out of the seabed bottom layer, and a channel formed by the seabed drilling guide module is used for dragging a pipeline into a reservoir. A reusable mining channel suitable for the deep sea environment is constructed, the gasification efficiency is effectively improved, and stratum disturbance and energy consumption are reduced.

The invention relates to a pressure-resistant compensation type underwater wet-plugging electric connector socket protection device which comprises a front shell, an outer-layer oil bag and an insulator are arranged in the front shell, the periphery of the insulator is matched and sealed with the front shell, and the front end of the insulator is matched and sealed with the rear end of the outer-layer oil bag; the oil-filled pressure-balanced jack is used for being adaptively plugged with a pin of a protected socket and is positioned and assembled in the insulator, the front end of the oil-filled pressure-balanced jack is positioned in the outer-layer oil bag, and the rear end of the oil-filled pressure-balanced jack extends out of the tail part of the insulator; the front end of the straight sleeve is open and the tail is closed; the front end of the straight sleeve is hermetically connected with the tail part of the front shell, and balance oil is injected into a cavity; the two ends of the inclined sleeve are open, the front end of the inclined sleeve is connected with the straight sleeve in a sealed mode, and a piston is arranged in the inclined sleeve in a sealed mode and can do reciprocating motion under the action of balance oil in the straight sleeve and external water pressure. The pressure-resistant compensation type underwater wet-plugging electric connector socket protection device not only can protect the contact pin of the wet-plugging electric connector socket, but also can meet the pressure requirement brought by a deep sea environment.

The invention discloses a transmission type communication system and method based on low-frequency carrier waves and high-frequency modulation. The transmission type communication system and method are suitable for complex medium environments such as deep sea, strata and biological tissues. Aiming at the contradiction that the traditional low-frequency communication bandwidth is insufficient and the high-frequency communication penetrating power is poor, according to the scheme, a low-frequency carrier wave (30Hz-100kHz) and a high-frequency modulation signal (such as OFDM (Orthogonal Frequency Division Multiplexing) and 256QAM (Quadrature Amplitude Modulation)) are fused through a nonlinear signal superposition technology to generate a composite carrier wave signal, long-distance penetration is realized by utilizing the low attenuation characteristic of the low-frequency carrier wave, and meanwhile, the data rate is improved through high-frequency modulation. Application scenes comprise deep sea detection (300-meter high-definition video return), a brain-computer interface (implantable antenna transmission neural signal) and an intelligent power grid (underground pipe network monitoring). Through the physical layer-information layer collaborative design, the physical boundary limitation of traditional communication is broken through, and high penetrability, high bandwidth and strong anti-interference capability are achieved.

The invention provides a deep-sea large-aperture array deconvolution near-field high-precision direction finding method based on sound velocity correction. According to the method, an equivalent sound velocity mapping table generated by a BELLHOP ray model is established, a sound ray bending effect is innovatively converted into a real-time table look-up correction mechanism, sound velocity correction time delay is injected in beam forming and deconvolution calculation, the problem of PSF distortion of a traditional linear model in a deep sea near field is thoroughly solved, high-precision direction finding and distance measuring are achieved, and the accuracy of direction finding and distance measuring is improved. And a subversive direction finding solution with physical accuracy, algorithm stability and engineering real-time performance is provided for the deep-sea large-aperture array.

The invention discloses a cooperative control simulation system for an underwater robot and an umbilical cable system, belongs to the technical field of ocean engineering simulation and automatic control, and is used for analyzing system dynamic characteristics in the research and development stage of deep sea operation equipment. Comprising an environment initialization and marine environment construction module, a mother ship model construction module, an underwater robot and umbilical cable coupling module, an instruction generation module, a man-machine interaction control module and a data acquisition and storage module. According to the method, an external interference source with physical authenticity is provided for a control algorithm by combining an energy density function and simulating a composite environment modeling method of a sea level height field and an LOD dynamic grid, and a distributed model prediction control algorithm for uniformly optimizing underwater robot trajectory tracking and umbilical cable tension safety maintenance is constructed; data such as the motion state of the underwater robot and the tension of the umbilical cable can be output in real time, algorithm performance testing is completed in a virtual environment, and dependence on high-cost sea testing is not needed.

The invention discloses an oil pressure compensation method and a corresponding device for a deep-sea sound wave signal receiving and transmitting device, and relates to the field of underwater detection.The method comprises the steps that the deep-sea sound wave signal receiving and transmitting device is assembled on a downward detection mechanism, and an oil pressure compensator injects a preset amount of silicone oil into a sealing shell through an oil injection valve; after injection is completed, a downward probing mechanism is started to enable the deep sea sound wave signal receiving and transmitting device to sink in water; in water, the oil pressure compensator carries out compensation calculation on the volume of the silicone oil in the sealing shell based on an integrated PID control-based self-adaptive oil pressure compensation algorithm, and drives the oil injection valve to feed and discharge the silicone oil to the sealing shell, so that the pressure balance inside and outside the sound wave signal transmitting and receiving device for deep sea is kept. Through an oil pressure compensation mode, the sound wave signal transmitting and receiving device for deep sea is protected, and the problems that an existing sound wave signal transmitting and receiving device is prone to deformation and internal elements are damaged in a deep sea high-pressure environment are solved.

To enable high-accuracy calibration, reduction of calibration time, and suppression of increases in power consumption, size, and mass of acoustic lighthouses even when a large number of acoustic lighthouses are installed in deep sea.SOLUTION: An offshore signal processing device 10 transmits and receives acoustic signals to and from a master lighthouse 20, acquires three-dimensional absolute coordinates of the master lighthouse 20 by acoustic positioning, and notifies the master lighthouse 20 of the three-dimensional absolute coordinates. The master lighthouse 20 transmits and receives acoustic signals to and from slave lighthouses 30a, 30b, acquires three-dimensional relative coordinates of the slave lighthouses 30a, 30b by acoustic positioning, and acquires three-dimensional absolute coordinates of the slave lighthouses 30a, 30b from the three-dimensional relative coordinates and its own three-dimensional absolute coordinates notified from the signal processing device 10.SELECTED DRAWING: Figure 1

The invention discloses a land-based data automatic receiving and preprocessing management system and method, and relates to the technical field of ocean observation data processing, and the system comprises a communication service subsystem, a data preprocessing subsystem, an intelligent perception linkage subsystem, and a data management subsystem. And full-process automatic processing of underwater acoustic real-time communication subsurface buoy observation data is realized through modular integration. Automatic receiving, safe storage and efficient preprocessing of deep sea power and biogeochemical element data are achieved, reliable data support is provided for marine scientific research and environment monitoring, and the long-term observation requirement of a 6000-meter water depth subsurface buoy system is met.

The invention provides a pipeline type inrush water magnetic adsorption visual grouting plugging simulation method, which comprises the following steps of: 1, dynamically assembling a modular magnetic rod, sleeving a time sequence functional sleeve, pre-adsorbing a magnetic slurry layer, mounting a long pressure relief pipe with a shunting hole and a rotational flow grouting pipe, and integrally inserting into a pipeline for positioning; 2, high-speed water flow is dispersed through a pressure relief pipe, grouting parameters are dynamically regulated and controlled based on flow state perception, and dynamic balance is maintained through synchronous pressure relief of swirl jet grout; 3, after solidification, scanning through a pressure relief pipe ultrasonic probe, and constructing a three-dimensional density cloud picture to quantitatively evaluate integrity; and 4, the inert film is dissolved by the solvent to activate the lubricating layer, the degaussing coil counteracts the adsorption force, and the hydraulic mechanism axially pulls out the magnetic bar with constant force. The method has the advantages that magnetic flux self-adaption and pressure relief grouting cooperate to solve the flowing water plugging retention problem; high-quality recovery of the magnetic bars is optimized through sequential control; flow state perception and ultrasonic verification double closed loops guarantee the controllability of the plugging quality; the modular fast-assembly architecture supports cross-environment deployment from land karst to a deep sea scene.

The invention belongs to the technical field of pipeline safety assessment, and discloses a multi-dimensional information interconnection and autonomous evolution collaborative pipeline full-state safety assessment method. And capturing a high-order relationship of data through double hypergraph reasoning of the instance-level hypergraph and the modal-level hypergraph to realize efficient interconnection. According to the method, mode-level and instance-level hypergraph information features are extracted through hypergraph information propagation, high-order correlation is mined through double-graph information aggregation, cross-mode and cross-instance consistency information and exclusive information are output after feature recombination, multi-dimensional data deep fusion is promoted, and high-quality data support is provided for follow-up pipeline full-state safety assessment. A two-stage autonomous evolution mechanism of intra-class progressive calibration and inter-class knowledge migration is respectively adapted to slight fluctuation and significant change scenes of the deep sea environment: precise adaptation of environment perturbation is realized through dual-branch feature extraction and dynamic weight adjustment in a domain; model parameter dynamic optimization is completed between domains through spatial-temporal feature clustering and cross-domain knowledge migration, and dynamic environment self-adaption can be achieved without manual intervention.

The invention particularly relates to a deep sea reliable sound path long baseline robust positioning method based on iterative equivalent sound velocity correction, which comprises the following steps: firstly, selecting a coordinate origin, and delimiting a positioning area by taking the coordinate origin as a center; a sonar receiving array is distributed to a proper position, a hydroacoustics numerical calculation ray model is utilized to establish a sound field model according to data such as a sound velocity profile, a target sound source depth and a horizontal distance range, and an equivalent sound velocity table is obtained. Then, inputting an initial equivalent sound velocity vector and an initial relative propagation time vector, and obtaining initial target position estimation by using a hyperbolic intersection method; next, the equivalent sound velocity and the target position are updated through iteration, and an adaptive adjustment item is introduced, so that the convergence and robustness of the algorithm are improved; and finally, judging whether iteration is terminated or not by utilizing a maximum likelihood error function. The method combines the hyperbolic intersection method to efficiently solve and adaptively adjust items, is high in positioning precision, is high in calculation efficiency, and is suitable for underwater real-time high-precision positioning tasks.

The utility model relates to a cut-off type hydraulic ball valve for deep sea, which comprises a single-action hydraulic actuator and a valve, and the hydraulic actuator comprises a compact cylinder body, a piston rack, a gear transmission shaft, a pressure balancer, a spring energy storage device and a valve position feedback indicator. And the valve part comprises a valve body, a valve rod, a ball, a valve seat, a valve seat gland and a stuffing box. The deep-sea external pressure resistant ball valve has the advantages of deep-sea external pressure resistant working condition, simple structure, low cost and high stability.

The invention discloses a closed-loop control system and method based on deep-sea ore raising pipe ore pulp concentration monitoring, and the system comprises a water surface support platform control center which is used for outputting a control strategy; the hydraulic ore injector is used for receiving the control strategy and carrying out self-adaptive adjustment according to the control strategy; wherein the water surface support platform control center comprises an intelligent control unit and a controller, and the intelligent control unit is used for collecting operation parameter data of the hydraulic ore injector, processing the operation parameter data and predicting in real time to obtain a solid phase volume concentration predicted value; the controller is used for receiving the solid phase volume concentration predicted value and determining a control strategy according to the solid phase volume concentration predicted value; the intelligent control unit comprises a data acquisition module, a data processing module and a prediction module; the concentration of ore pulp in the pipeline can be more accurately controlled through the system, and the system can better adapt to complex working conditions such as submarine topography and ore supply quantity fluctuation.

The utility model relates to the technical field of floating type wind power platforms, and discloses a deep sea floating type wind power platform leveling device which comprises a bottom frame, an air bag is fixedly assembled on the inner wall of the bottom frame, an auxiliary frame is arranged on the top of the bottom frame, a rotating frame is rotatably connected to the inner wall of the auxiliary frame, an outer cylinder is fixedly assembled on the top of the rotating frame, and a floating type wind power platform is arranged on the outer cylinder. The inner wall of the outer cylinder is slidably sleeved with a sliding cylinder, and a fixing frame is fixedly assembled on the top of the sliding cylinder. Through cooperative use of a convex rod and a concave cylinder, when the bottom frame and the air bag are influenced by the external environment, the wind power platform body is assisted by the balance weight ball to keep balance when the bottom frame inclines, and the convex rod is driven by the wind power platform body to move towards the inner wall of the concave cylinder; and the bottoms of the convex rods make contact with the tops of the pressure sensors, the pressure sensors are used for controlling the adjacent air pumps to operate, the adjacent air pumps are used for supplying air into the air bags through the connecting pipes, and therefore the device is assisted in leveling.

The invention discloses a multi-point monitoring flexible temperature sensor array system for a deep sea environment. The multi-point monitoring flexible temperature sensor array system comprises a sensing node array composed of a plurality of sensing nodes, a plurality of flexible interconnection wires and a master control node, all the sensing nodes are connected in series through flexible interconnection wires and then are electrically connected with the master control node. The sensing node comprises a ratio type temperature measurement module and a 1-Wire bridging chip, the master control node comprises a 1-Wire master control chip and an MCU, and the flexible interconnection wire is a snakelike wire; the ratio type temperature measurement module collects a sampling signal and transmits the sampling signal to the 1-Wire master control chip through the 1-Wire bridge chip. And the MCU obtains the temperature at the node according to the sampling signal of each sensing node. The flexible temperature sensor array system provided by the invention is simple in structure, stable in performance and insensitive in pressure, and can reliably realize multi-point temperature real-time monitoring in a deep sea environment.

The invention discloses a high-strength and high-toughness titanium alloy for deep sea equipment. The high-strength and high-toughness titanium alloy is composed of the following components of 3.8%-4.5% of Al, 3.8%-4.5% of Mo, 3.8%-4.5% of V, 4.7%-5.3% of Cr, 1.8%-2.2% of Zr, 0.8%-1.2% of Nb and the balance Ti and inevitable impurity elements. The tensile strength Rm of the high-strength-toughness titanium alloy is larger than or equal to 1300 MPa, the yield strength Rp0.2 is larger than or equal to 1250 MPa, the elongation A is larger than or equal to 9%, the impact energy KV2 is larger than or equal to 24 J, the fracture toughness KIC is larger than or equal to 60 MPa.m < 1 / 2 >, compared with an existing titanium alloy for ocean engineering, the high-strength-toughness titanium alloy has higher strength, meanwhile, the impact resistance and the crack propagation performance are both considered, and the high-strength-toughness titanium alloy has good application prospects in the field of ocean engineering, especially deep sea equipment. And industrial preparation of large-specification components is met.

The invention relates to the technical field of suspended sediment dynamic monitoring, in particular to a suspended sediment dynamic change monitoring and deep sea operation scheduling optimization method, which comprises the steps of multi-source fusion data acquisition: synchronously acquiring suspended sediment concentration distribution data, three-dimensional ocean current vector data and seabed microtopography slope data of a target area; simulation of plume dynamic diffusion: inputting the acquired data into a microtopography coupled adaptive plume diffusion model to generate a plume diffusion three-dimensional space-time cloud picture in the future 6 hours; dynamic risk partition generation: performing space-time overlay analysis on the plume diffusion three-dimensional space-time cloud picture and a preset ecological sensitive area dynamic electronic fence to obtain an operation risk thermodynamic diagram; and intelligent partition scheduling execution: dynamically dividing a mining prohibited area, a buffer area and a safe area, and sending an inter-partition rotation scheduling instruction to the mining equipment group. According to the method, the spatial resolution and the aging response capability of sediment diffusion behavior prediction are improved, and a basis is provided for environmental impact assessment and ecological protection.

The invention relates to an underwater acoustic transducer which can resist long-term work under the condition of deep sea high water pressure, is high in sensitivity, wide in band, low in noise and high in electromagnetic interference resistance, is used in deep sea detection and communication sonar systems, and solves the problems that an existing underwater acoustic transducer is low in receiving sensitivity along with increase of water pressure, poor in long-term work corrosion resistance and low in cost. And noise of the hydrophone and external electromagnetic interference cause signal interference. A novel high polymer material is adopted to reduce acoustic impedance, enhance the coupling effect with seawater and reduce sound wave reflection loss. Meanwhile, by optimizing the internal structure design, the stability and durability of the device under the deep sea high pressure condition are ensured. And the hydrophone shell is made of an alloy material with good corrosion resistance, so that the hydrophone shell is prevented from being corroded in a marine environment for a long time, and the service life is prolonged. By improving the design and manufacturing process of the transducer, the transducer can cover acoustic signals in a broadband range, and the multi-spectrum requirement of a deep sea detection and communication system is met. Advanced noise suppression technology and shielding measures are adopted, noise of the hydrophone is effectively reduced, external electromagnetic interference resistance is improved, and it is guaranteed that high-quality acoustic data are obtained in a complex deep sea environment. In conclusion, the invention provides the hydrophone which is excellent in working performance in the deep sea high-pressure environment, has the characteristics of high sensitivity, broadband response and the like, can effectively resist the influence of a severe environment, and provides key technical support for deep sea detection and a communication sonar system.

The invention discloses a deep and far sea wind power time-varying impedance model grid connection analysis method based on a time domain residual error method, relates to the technical field of power system modeling simulation, and can efficiently and accurately analyze deep and far sea wind power grid connection. The method comprises the following steps: establishing a differential algebraic equation set containing high-capacity submarine cable impedance and a plurality of nonlinear links, and constructing a recursive coefficient matrix; dividing a preset global time domain into a plurality of time domain subintervals, and solving the recursion coefficient matrix in each time domain subinterval by referring to a universal analytic solution represented by a power series explicit operator to generate a global time domain explicit solution corresponding to the preset global time domain; performing discrete Fourier transform on the global time domain explicit solution to obtain a time-frequency domain spectrum result; and constructing a time-varying impedance model according to the differential algebraic equation, setting the time-varying impedance model by adopting a time-frequency domain spectrum result, and analyzing the deep and far sea wind power grid-connected control system by utilizing the set time-varying impedance model.