140 results about "Water channel" patented technology

The invention discloses a ship route planning method and system in a polar region sea ice environment and a program product. The ship route planning method comprises the steps of preprocessing satellite remote sensing radiation intensity data, performing image reconstruction of inter-ice water channel detection through an improved Vision Transform model, planning and visualizing a ship route and the like. The deep features of the image blocks are extracted through a Transformer encoder which comprises a multi-head self-attention mechanism and is processed by a multi-layer perceptron; and the Transform encoder firstly performs layer normalization on the input, and then performs multi-head attention mechanism and multiple linear transformation and regularization processing. And realizing path planning in an inter-ice water channel environment by fusing a dynamic planning cost function through a fast marching method. Compared with a traditional algorithm, the method has the advantages that the calculation precision is higher in the same scene, the calculation efficiency is greatly improved, and the planning result obtained after multiple costs are comprehensively considered is given instead of pursuing the shortest distance.

The invention relates to a high-power-density marine split-type permanent magnet shaft generator, which comprises a split-type stator, a split-type rotor and a cooling chamber, and is characterized in that a circulating water channel is arranged on the outer wall of a base of the split-type stator and is connected through a cooling water pipe; an air inlet and an air outlet are formed in two ends of the base; the cooling chamber is integrated at the top of the generator; the split-half rotor comprises a permanent magnet, a rotor core, a rotor support and an expansion sleeve. The rotor core is provided with a plurality of ventilation holes in the axial direction. The generator adopts a stator surface water cooling and forced air cooling mixed cooling system, and a water cooling channel and an air cooling channel operate independently and dissipate heat cooperatively. Through the structural design of the generator, the stator and the rotor of the generator are fully cooled, the heat dissipation efficiency of the generator is improved, and the power density of the generator is improved. A generator rotor permanent magnet is of a tangential structure, and the power density of the generator is further improved. And the ventilation holes are axially added to the rotor iron core, so that the weight of the rotor is reduced, and the influence on the original shafting of the ship is reduced.

The invention provides a water channel salt tide evolution simulation system based on a long-memory double-autoregression model, and belongs to the field of data processing. The simulation system comprises a data acquisition module, a data preprocessing module, a model training module, a simulation module and a visualization module. The data acquisition module is responsible for collecting hydrological data of a plurality of positions in a water channel, and the data preprocessing module carries out standardization and non-integer order differential transformation on the data so as to process time correlation of long-term numerical values. And the model training module carries out training by adopting a double-autoregression model based on the preprocessed data, and carries out parameter fitting by using an LSTM neural network to generate a salt tide evolution model. The model comprises a long memory part and an autoregression part which are respectively used for capturing long-term dependence and short-term fluctuation of data. The simulation module utilizes the trained model to predict future salt tide evolution, and the visualization module displays a prediction result in a visual graphic mode.

Flood extent mapping and prediction methods and systems are disclosed. A computer-implemented flood extent mapping and prediction method comprises: obtaining elevation data associated with a waterway and defining a line through the waterway in an upstream to downstream direction; obtaining water gauge data comprising one or more locations of one or more water gauges along the waterway, respectively, and water level data at each of the one or more water gauges; correlating the one or more water gauges to one or more respective points along the line through the waterway based on the one or more locations; determining a water depth value at each of the one or more respective points using the water level data from correlated water gauges and the elevation data; and generating a flood map based on the water depth value at each of the one or more respective points along the line through the waterway.

The invention relates to an open boundary circulating flow and reconfigurable terrain collaborative maritime work scouring intelligent test system and test method, a maritime work structure test model is installed at the center position of a main body structure inner cavity test section, and a set area with the maritime work structure test model as the center is used as a main test section; the open-boundary circulating flow generation system realizes back supplement and closed-loop operation of circulating water channels of the left bank and the right bank; a multi-beam three-dimensional terrain scanner is installed on the side portion of the large-span electric measuring bridge system, and sand bed terrain and scour pit three-dimensional shape data are obtained; a three-dimensional acoustic Doppler current meter and a capacitive wave height meter are installed on the track type instrument bridge measuring system, and multi-dimensional dynamic monitoring is conducted on the sand bed terrain and the scouring pit; the multidirectional irregular wave generation system is used for simulating regular waves and irregular waves in an offshore environment. According to the invention, the aspects of structure scale, terrain coupling and measurement and control feedback intelligence are comprehensively upgraded, and a more real and reliable test basis with strong engineering adaptability is provided for research on scouring stability of major ocean engineering.

The embodiment of the invention discloses a ship route data extraction method and device based on AIS (Automatic Identification System) data. The method comprises the following steps: collecting historical ship route data to obtain a ship navigation path; performing route feature recognition according to the historical ship route data to obtain route features, dividing route segments based on the route features, and classifying different route segments; and performing clustering processing on the classified route segments, and performing segment processing on the clustered route segments to obtain an empirical route data set. Based on the historical AIS data of the ship, the method can reflect the real navigation habit of the ship, and accords with the navigation management regulations of near-shore and navigable water channel areas. When the method is adopted to process the airline data, a complicated data cleaning process is not needed, and the consistency from original data to generalized data is easy to ensure; the route data are recombined after being subjected to segmented fitting, so that route selection between two ports is more flexible; a conservative method is adopted to process AIS data, and experience and intelligence of ship route selection are reserved in the data.

This invention provides a prefabricated canal construction process, comprising the following steps: S1: excavating a waterway; S2: constructing a transportation system above the waterway along its extension direction; S3: manufacturing prefabricated components; S4: using the transportation system to move the prefabricated components to a predetermined position on the waterway; S5: repeating S3 to S4 until all the prefabricated components are transported; S6: assembling adjacent prefabricated components to form a prefabricated canal. The prefabricated canal construction process provided by this invention offers a hoisting method, constructing a transportation system above the waterway, using the transportation system to move the prefabricated components to a predetermined position, and then sequentially assembling multiple prefabricated components to form a canal. This avoids on-site construction of prefabricated components, only requiring transportation of prefabricated components, reducing the number of material handling operations and saving construction time. The multiple prefabricated components assembled into a canal in this application are easy to move individually, and can be quickly transported to a designated location with the help of the transportation system, accelerating the construction efficiency of the canal.

The present application belongs to the technical field of water area monitoring, and particularly relates to a water system monitoring method and system. The method comprises determining an upstream waterway of a current waterway according to water system distribution, acquiring a water area image of the current waterway, acquiring water quality change data of the upstream waterway, selecting a corresponding image processing model, and outputting specified water system monitoring data based on the water area image and the image processing model. According to the water system distribution, the upstream waterway of the current waterway is determined, the judgment range is expanded to the entire water system, the judgment accuracy and range can be improved, the water area image of the current waterway is acquired to facilitate data collection in the current area, the water quality change data of the upstream waterway is acquired, the corresponding image processing model is selected, the data processing efficiency and accuracy can be improved, and the specified water system monitoring data is output based on the water area image and the image processing model, the water system monitoring capability and efficiency can be improved.

A flood warning apparatus may include: an extendable body that extends above a foundation, where the extendable body is configured to move within a range bounded by a minimum height and a maximum height based on a level of water in a waterway that covers the foundation; a platform disposed atop the extendable body, wherein the platform is buoyant; and. a floatation object having a notification mechanism, wherein the floatation object is configured to be retained by a retention feature of the platform when the position of the extendable body is less than the maximum height, where the floatation object is further configured to be released from the platform by the retention feature when the level of water in the waterway exceeds a threshold value, where the floatation object is buoyant, and where the notification mechanism activates when the floatation object is released from the platform by the retention feature.

The application discloses a method for determining the migration degree of a deep-sea channel, a storage medium and computer equipment, and comprises the following steps: dividing a deep-sea composite channel on a deep-sea channel planar distribution map into a plurality of curved segments; for each curved segment, the following steps are performed: determining the vertical migration amount and the lateral migration amount of a deep-sea single channel corresponding to the curved segment on a seismic amplitude profile corresponding to the curved segment; calculating a channel migration index of the curved segment according to the vertical migration amount and the lateral migration amount of the deep-sea single channel corresponding to the curved segment; and analyzing the migration degree of the deep-sea channel of the curved segment according to the channel migration index of each curved segment. The migration evolution degree of the deep-sea single channel can be quantified through the channel migration index, which not only enriches the morphological parameters of the deep-sea channel, but also plays an important supporting role in the quantitative sedimentology and sedimentary system research of the deep-sea channel.

The present disclosure relates to generating an output coastline model, e.g., for improving the resolution of the model in certain regions. A computer receives historical vessel position data including a plurality of historical positions of a vessel for each of a plurality of vessels, and receives an input coastline model defining a waterway and a land mass. Then, the computer determines a land block region containing the plurality of historical positions of the plurality of ships in the input coastline model according to the historical ship position data, and distributes the land block region containing the plurality of historical positions in the input coastline model to the water channel in the input coastline model, to thereby produce an output coastline model with improved resolution at the watercourse.

This invention relates to the field of unmanned surface vessel (USV) path planning technology, specifically to a path planning method for USV swarms in narrow waterways. The method includes: constructing a narrow waterway environment model; constructing a USV kinematic model; constructing a training set based on data from the narrow waterway environment model and the USV kinematic model; constructing a path planning model based on a multi-agent proximal policy optimization algorithm employing an attention mechanism, wherein the reward function of the path planning model considers an adaptive reward mechanism based on waterway width to achieve a triangular formation for the USV swarm in wide waterways and a longitudinal formation in narrow waterways; training the path planning model using the training set; and applying the trained path planning model to a real-world path planning task to achieve cooperative navigation and collision avoidance of the USV swarm in narrow waterways. This invention improves the path planning capability and navigation safety of USV swarms in narrow waterway environments.

The utility model relates to a marine direct-drive permanent magnet synchronous motor, which comprises a rotor, a conducting ring, a front bearing outer cover, a cylindrical roller bearing, a deep groove ball bearing, an end cover, a stator, a junction box, a bearing inner cover, a bearing sleeve, a rear bearing outer cover, a round nut, a rotary transformer, a convex panel type flat welding steel flange, a bearing support and a spiral water channel water-cooling base. A low-rotating-speed sailing mode is achieved, energy conservation and emission reduction of the ship are better facilitated, and the transportation cost is saved.

The utility model relates to the technical field of air tightness testing equipment, in particular to a water channel air tightness testing machine, which can automatically complete plugging of a water channel opening and air tightness testing. The device is specifically provided with a conveying assembly, a lifting assembly and a testing assembly. The conveying assembly moves a product to the position below the testing assembly, the testing assembly is installed on the lifting assembly, and the lifting assembly drives the testing assembly to ascend and descend to get close to the product for air tightness testing. Wherein the test assembly comprises a quick-release connecting part which is connected with the lifting assembly by adopting a quick-release structure, so that the test assembly is quickly disassembled, and different numbers of test assemblies with different structures can be selected to adapt to products with different numbers and positions of water channel openings.

The present invention relates to the field of water conservancy projects, specifically to a large floating ship-type pump station for a Yizimen river dam, comprising a foundation, a station body, a stern hinge, a propulsion system, a ballast system, a measurement and control system, and a main pump system. At the same time, an operating mode applied to the present invention is provided. The present invention connects the station body to a U-shaped foundation fixedly installed in a waterway through a stern hinge. When the waterway is blocked, the measurement and control system controls the operation of the propulsion system and the ballast system, and controls the station body to rotate around the axis of the stern hinge, so that the station body intercepts the waterway. Therefore, the structural strength of the present invention is high. Compared with the currently commonly designed small water pump installed on the gate to transport water, the scale of the gate hole and the scale of the water pump that can be applied to the present invention are both increased, and the present invention can be adapted for large-span gate holes and medium and large pump stations.

In a method for transferring a storage medium of power generation energy loaded by a power generation float to a collection base, a power generation float is connected to both sides of a deck part, a power generation float is moved to a collection base, a deck part straddles a long bank projecting on a water surface along a water channel through which a hull can pass along a quay wall of a collection base, a power generation float is anchored in a state where one of the hulls enters a water channel, a hull on at least one side of the deck part is separated from the deck part, and a storage medium capable of storing energy is connected on a side where the hull of the deck part is separated, and the float leaves with the hulls connected to both sides of the deck part.

The invention discloses a deep sea environment water-guided laser cutting device and method. The deep sea environment water-guided laser cutting device comprises a spray head device, a drainage cover device, a self-circulation pressurizing device, a laser generating device and a mobile positioning system. The nozzle device is provided with an annular water channel to stabilize water jet; the drainage cover coaxially sleeves the outer side of the spray head, and a local dry cavity is formed through gas injection; the self-circulation pressurizing device is used for extracting seawater and pressurizing and conveying the seawater; the laser generating device calibrates a laser focus through the calibration lens cone and the optical lens, and coaxial coupling of the water jet and the laser beam is achieved. The deep sea cutting precision and efficiency are improved, environmental interference is reduced, and the method is suitable for underwater high-precision machining.

The invention relates to the technical field of ship path planning methods, in particular to a coastal channel water area ship path planning method, which comprises the following steps of: preprocessing an electronic chart; generating an adjacent graph; channel division; initial path generation: performing path search based on an A star algorithm according to the adjacent graph, and introducing a channel preference factor into a cost function of the A star algorithm to generate an initial path; and finally generating an optimized path. When the A star algorithm is used for path search, a channel preference factor is introduced into a cost function of the A star algorithm, channel priority is considered in the planning process of an initial path, namely, the initial path is generated in a channel area in a channel place, and the initial path is optimized. Meanwhile, the initial path is generated as close to the outer edge of the water channel or the channel of the ship starboard as possible, and the problem that the generated path deviates from the channel and crosses the channel in practical application is avoided.

The utility model relates to the field of cleaning ships, in particular to a driving device for a cleaning ship. The cleaning ship comprises a ship body, and a tipping bucket is arranged at the front end of the ship body, rotationally connected with the ship body through a turnover device and used for cleaning a water channel. The driving device is arranged at the tail end of the hull; the driving device comprises a propeller and a steering assembly, the steering assembly comprises a rudder mechanism and a steering engine driving mechanism, the steering engine driving mechanism comprises a steering seat and hydraulic drivers arranged in pairs, and the middle of the steering seat is coaxially fixed to the rudder mechanism; one end of any hydraulic driver is fixed to the ship body through a fixing frame, the other end of the hydraulic driver is hinged to the end of the steering base, and the pair of hydraulic drivers alternately act to drive the steering base to drive the rudder mechanism to swing. According to the driving device, the steering mechanism in the driving device can achieve steering control over the cleaning ship through the pair of hydraulic drivers. By means of the design, the number of mechanical parts is reduced, and therefore the maintenance cost is reduced.

A device for detecting tidal current energy potential of an offshore narrow water channel through an underwater unmanned aerial vehicle comprises the underwater unmanned aerial vehicle capable of being operated in a remote control mode, a flow velocity detector used for measuring the flow velocity of seawater is arranged on the top of the underwater unmanned aerial vehicle, and the flow velocity detector comprises a main support vertically installed on the underwater unmanned aerial vehicle. A plurality of transverse supports which are transversely arranged are sequentially installed on the main support from top to bottom, and a plurality of propeller type flow meters are installed on the transverse supports. The invention further provides a method for detecting the tidal current energy potential of the offshore narrow water channel through the underwater unmanned aerial vehicle, the flow velocity and tidal current energy of offshore multilayer seawater can be efficiently and accurately detected, and the method has important significance in improving the accuracy and efficiency of marine environment detection and developing the tidal current energy.

The present application discloses a method for erecting a large-span curved beam and inclined arch across a busy waterway with a few supports, which relates to the field of construction of a connecting truss connection system, and includes the following steps: S1, erecting a hoisting system on the top of two adjacent ground-type steel pipe supports, and placing the connecting truss on a barge according to the installation posture; S2, hoisting the connecting truss to the installation height of the connecting truss through two hoisting systems, and fixing the connecting truss to the ground-type steel pipe support; S3, installing the arch rib; S4, after the arch rib is installed, remove the connection between the connecting truss and the ground-type steel pipe and lower the connecting truss to the barge through two hoisting systems. The present application has the advantages of not needing to erect a steel platform on the water, replacing the floating hoisting method, effectively reducing the impact on the navigation of the busy waterway, so that when the arch rib erection support is constructed, the normal navigation of the busy waterway is ensured.

(Main claim) Modular safety and monitoring system for watercourses, comprising at least one floating buoy module, an optional shore or bottom module, and a bridge-integrated power module, wherein the buoy module includes optical and acoustic signaling units, a wireless communication unit, an autonomous power supply system, at least one sensor for detecting water levels or hazardous events, and optionally a camera unit with day and night operation, wherein the buoy module additionally includes infrared light sources, a night light, temperature sensors, and a manually operated alarm button for locally triggering warning messages, and wherein the bridge-integrated power module includes a water-flow-driven generator, and the modules can communicate with each other and transmit warning or monitoring signals to external services.

The invention relates to an inland river navigation mark distribution rationality evaluation method, and belongs to the technical field of navigation channel navigation mark rationality evaluation, and the method comprises the following steps: building an inland river navigation mark distribution rationality evaluation index system which comprises an element set U, and elements in the element set U1 represent elements which must be considered in navigation mark distribution; acquiring information for representing each index of the navigation mark distribution rationality evaluation index system in the to-be-evaluated water channel, and uniformly quantifying element information of each index into an evaluation score S according to a mathematical model of each index; determining the weight W of each evaluation index in the inland river navigation mark distribution rationality evaluation index system by utilizing expert scoring and an analytic hierarchy process; and calculating a comprehensive evaluation result F = S * W of the rationality of the navigation mark distribution.

This invention provides a water channel control system for dual inverters. The system includes: a first inverter, a second inverter, a first inlet pipe, a second inlet pipe, a third inlet pipe, a fourth inlet pipe, a first valve, a second valve, and a control unit. The first valve is installed on the third inlet pipe and is electrically connected to the control unit. The second valve is installed on the fourth inlet pipe and is also electrically connected to the control unit. The control unit can control the opening and closing of the first and second valves. This water channel control system for dual inverters can meet the different cooling requirements of dual inverters under different operating conditions, preventing the inverters from being power-limited due to insufficient heat dissipation, thus improving vehicle performance and economic efficiency.

The application provides a narrow waterway unmanned ship collision avoidance local path planning method, and has the characteristics that the method comprises the following steps: S1) after entering the narrow waterway, path planning is carried out based on terrain perception information, and a local path is established; S2) an identification channel is established, the identification channel is a dynamic area defined based on the unmanned ship position and the channel width, and is used for judging the interference relationship with obstacles to make a collision avoidance decision; S3) the unmanned ship is navigated according to the local path, and whether there is a collision avoidance target in the identification channel is judged; S4) if it is a collision avoidance target, the collision avoidance target is dilated; 5) whether the unmanned ship is located in the narrow waterway is judged, and if yes, the step S3) is jumped to; S6) the unmanned ship is navigated according to the global path. The collision avoidance local path planning method of the application adopts simple and effective collision avoidance rules, dynamically plans the navigation path by perceiving the environment, and solves the problem that the existing path planning algorithm is difficult to meet the real-time requirement and may have no solution and may not converge.

The present application relates to a kind of ocean energy power generation system, including wave energy power generation device, deep water power generation device and temperature difference energy power generation device, deep water power generation device includes communicating vessel, first water reservoir, contraction waterway, water turbine, generator and second water reservoir, wave energy power generation device includes swing plate array, transmission and speed change mechanism and drainage mechanism, temperature difference energy power generation device includes temperature difference power generation instrument;System utilizes communicating vessel to extract deep sea salt-rich seawater into low first water reservoir, then water is accelerated by contraction waterway, and the water after acceleration passes through water turbine, drives generator to generate electricity, and then flows into lower second water reservoir;Swing plate array arranged on sea surface obtains wave energy, and the water of second water reservoir is pumped to high salt field or discharged to sea by drainage mechanism through transmission and speed change mechanism;The warm end of temperature difference power generation instrument is arranged in sea wave, and cold end is arranged in contraction waterway, to provide temperature difference for thermoelectric material and generate electricity.The system is conducive to improving the stability and efficiency of ocean energy power generation.

The utility model relates to the technical field of casing leakproofness detection, and discloses a casing leakproofness detection tool which comprises a sleeve, the outer surface of the sleeve is provided with a water channel, and the water channel and the inner surface of a casing can form a closed cavity. Water is injected into the sealed cavity, so that the sealing performance of the machine shell is detected. Water is injected into the closed cavity through the water injection pipe, and along with continuous injection of the water, water flow starts to flow in the direction of the water channel to gradually fill all parts of the closed cavity until the whole closed cavity is completely filled with the water, so that the detection part of the machine shell is completely covered. At the moment, if the sealing performance of the machine shell is good, the water flow cannot leak from other parts of the machine shell and is only discharged through the water outlet pipe. The water outlet pipe can discharge water in the closed chamber, and ensures that the water flow can smoothly pass through the whole water channel, thereby verifying the integrity of the closed chamber.

To provide a repairing method of an existing underground conduit for water channel, the method being capable of reconstituting easily, safely, and inexpensively a new water channel with a new conduit 3 in which multiple connection pipes 5 are consecutively coupled in an existing underground conduit 2.SOLUTION: A repairing method of an existing underground conduit for water channel includes: inserting consecutively-added connection pipes 5 into the existing underground conduit 2 between two adjacent manholes 1 from each of them until both of front end parts of the consecutively-added connection pipes 5 reach the middle part; further pushing in or drawing out at least one of the consecutively-added connection pipes, causing an expanded connection guide mechanism 7 to guide the connection pipes, adjusting position displacement, and completing the connection; performing contraction / removal of the connection guide mechanism 7; and reconstituting a new water channel 4 with a new conduit 3.SELECTED DRAWING: Figure 2

The utility model belongs to the field of ship power and propulsion system technology, specifically speaking is the river ship pod type electric propulsion device, including hollow shaft, the hollow shaft end portion sleeve fit connection has the conductive slip ring, through the orderly connection of hollow shaft and conductive slip ring, servo motor turntable, propulsion motor, fixed bolster, reach integration, solved the transmission of electric energy, control signal, monitoring alarm signal, simultaneously this pod type electric propulsion device can realize 360 degree rotation, can make the ship in the long waterway, port terminal etc. Limited water area realizes the complex control such as spot turning, transverse movement, oblique navigation, pod type electric propulsion device can be installed integrally to the ship, and the disassembly is convenient, improves the maintenance efficiency, and the device adopts direct drive mode, avoids the energy loss of mechanical drive, and the economic operation of the ship is convenient, and through cutting device, the entanglement is avoided in time, and the power is suddenly lost, and the ship control property is guaranteed.