397 results about "Tide level" patented technology

The invention discloses a large-scale ecological purse seine breeding device in shallow sea. The large-scale ecological purse seine breeding device in the shallow sea comprises a buoyancy system, a netting system, a dragon-shaped sandbag and an anchoring system, wherein the buoyancy system comprises double-row main floating pipes which are arranged in a parallel mode at intervals and a shore connecting structure which is fixedly arranged on the shore; two ends of the main floating pipes are respectively connected to the shore connecting structure and can longitudinally move up and down relative to the shore connecting structure; the netting system comprises a purse seine and the upper end of the purse seine is fixedly connected with the main floating pipes; the dragon-shaped sandbag is arranged at the bottom of the netting system; the anchoring system comprises a main anchor rope, the upper end of the main anchor rope is connected to the main floating pipes, and the lower end of the main anchor rope is fixedly arranged at the bottom of the sea through a piled anchor or an anchor block. The large-scale ecological purse seine breeding device in the shallow sea has the advantages of meeting the strength requirement of the buoyancy system of the purse seine by utilizing a mode of fixing the purse seine under the HDPE (high-density polyethylene) main floating pipes; ensuring a purse seine system to be always connected closely with a coastal connecting section and avoiding escape of the fish due to the fact that a buoy which is arranged in the shore connecting structure changes along with water levels; and being capable of avoiding the purse seine winding under different tide levels by arranging a chain and a floating ball string in the purse seine.

A wave power generation system adaptive to tidal fluctuation comprises a seafloor foundation which is arranged on seabed, two or more than two guide pile legs and a hydraulic lifting system which are fixed on the seafloor foundation respectively, and a support framework which is connected to the top end of the hydraulic lifting system. The support framework is movably connected with the two or more than two guide pile legs and rises and drops along slide ways which are arranged on the guide pile legs driven by the hydraulic lifting system, a swinging plate device which swings with the wave of the sea water and a power generation device which is connected with the swinging plate device are arranged on the support framework, and a tide level sensor which is connected with the hydraulic lifting system through a lead is installed on the part of the swinging plate device above the sea surface. The wave power generation system adopts the automatic hydraulic lifting system, needs no human operation and can adjust the position of the swinging plate device with the tidal fluctuation; moreover, the wave power generation system has advantages of high energy conversion efficiency, simple mechanism, high reliability, low production cost and the like.

The invention discloses a floating cofferdam type wave energy generating set, which comprises a tower convergent wave pool consisting of a platform and a multistage conic pool. The bottom of the tower convergent wave pool is divided into a plurality of ballast tanks and provided with a water level sensor, the upper cavities of the ballast tanks are filled with a buoyancy material, the platform is arranged on the buoyancy material of a groove in the middle of the convergent wave pool, and the platform is provided with a controller, a compressed air system and a baffle wall; the baffle wall is provided with a sensor, the low level of each stage of the convergent wave pool is provided with a pipeline leading to the sea level, the pipeline is internally provided with a Kaplan turbine and an asynchronous generator, the floating cofferdam type wave energy generating set is connected with anchor pipers with swivel links through anchor chains, and the anchor pipers are anchored at the bottom of the sea. According to the draught height of a wave height adjusting device, the floating cofferdam type wave energy generating set is not influenced by tide level and limited by terrain, always works towards the waves all around, can catch the wave energy as much as possible under various conditions, and has the advantage of high working efficiency; only the Kaplan turbine is the unique movable component so that the reliability of the whole set is improved.

The invention discloses an automated test device for simulating an ocean level fluctuation zone and a wave splash zone. The automated test device comprises a water storage tank, wherein the water storage tank is connected with a corrosive water tank through a tide control system, a wave splash control system is connected between the water storage tank and the corrosive water tank, the corrosive water tank is internally provided with an ocean temperature control system and is provided with an air blowing system, the tide control system, the wave splash control system, the ocean temperature control system and the air blowing system are connected with a PLC (Programmable Logic Controller) system, and the PLC system receives a temperature control parameter, an air blowing control parameter, a tide control parameter and a wave splash control parameter and sequentially transmits the parameters to the ocean temperature control system, the air blowing system, the tide control system and the wave splash control system. The automated test device can be used to control water inlet/outlet time, retention time of high/low tide level, cycle times, wave splash time, wave splash interval and the like in a full automatic manner; and in addition, an air blowing process can be added optionally as required so as to accelerate the test, so that the labor intensity is reduced greatly and the test efficiency is improved.

The invention discloses a method for short-term prediction of salt tide at a water intake in a tidal river region. The method comprises the following steps of: analyzing the following influencing factors: the flow of upstream hydrologic monitoring stations and the tide level difference, water unavailable hours and average chloride concentration of the water intake in a day so as to establish a BP-RAGA coupled neural network salt tide forecasting model and predict the water unavailable hours and average chloride concentration of the water intake in the next day; and determining the water available hours and amount of each water intake on the basis of the prediction so as to determine the time and space distribution of raw water intaking amount of the tidal river in the next day and finally draw up a dispatching predetermined plan of a raw water system by combining an optimal dispatching module of the raw water system, so that the safe operation of the raw water system and safe urban water supply are ensured. Compared with the conventional prediction systems, the method can dynamically determine the weight of each influencing factor in the prediction module by fully using existing information, improve the sensitivity and precision of the prediction and have lower rate of missing report and false report.

The invention discloses a method for simulating back-silting of a basin channel of a force tide firth artificial island operating area. The method comprises the steps of establishing a water flow mathematical model by use of a water flow sediment mutual feedback calculation mode and variable roughness factors changing with geomorphology and tide levels; calculating representative wave radiation stresses at different tide levels; optimizing an artificial island plane modality; performing wave, tide and runoff and sediment discharge coupling fitting; and finally, counting aback-silting amount. According to the method, in a wave current sediment mathematical model construction process, the requirement of basin channel back silting simulation of force tide firth artificial island operating areas with different geomorphologic shapes can be adapted and satisfied for the unique dynamic geomorphology characteristics of irregular coastlines of a semi-closed force tide firth offshore artificialisland, large tidal volume of inflow and outflow of force tides, wide tidal flat and complex geomorphology, strong tidal current under the action of rotary current, high influence of waves and combined action of sediment movements affected by wave currents in consideration of the variable roughness factors changing with the geomorphology and the tide levels.

The invention discloses a tide level self-adaption device of a vibration floater wave power generation device. The vibration floater wave power generation device comprises a submerging and surfacing body, guide rods, a floater, a hydraulic cylinder and sleeves, wherein the guide rods are arranged on the submerging and surfacing body; the floater and the sleeves are both sleeved on the guide rods; the cylinder block of the hydraulic cylinder is fixedly connected with the sleeves through support arms; a piston rod of the hydraulic cylinder is fixedly connected with the floater; the tide level self-adaption device comprises a wave height adjustment frame and a damping mechanism. According to the tide level self-adaption device, adaptive adjustment can be performed on the position of the hydraulic cylinder along with the tide level change, so that the effective working distance between the floater and the hydraulic cylinder is ensured, the power generation device is ensured to have higher energy conversion efficiency, and meanwhile, the dangerous situation that the piston rod rushes to the top or is separated from the cylinder block of the hydraulic cylinder is avoided; moreover, the tide level self-adaption device is formed completely by matching mechanical structures, and electronic components or electronic control systems are not related, so that the tide level self-adaption device is simpler and more stable in structure, and cannot be influenced by the marine environment, can stably work under the maritime severe environment for a long time, and does not need to be maintained frequently, so that the use and maintenance cost is extremely low.

The invention relates to an intertidal zone habitat survey method based on unmanned aerial vehicle aerial photography. The method comprises the steps that an unmanned aerial vehicle low-altitude aircraft is adopted as a remote sensing platform, needs to carry a digital camera, and integrates a GPS and a gyroscope module; a tidal table of a surveyed intertidal zone region is inquired; executable time periods of unmanned aerial vehicle aerial photography are determined according to high and low tide levels and tide time of a spring tide period; flight numbers and air lines of the aerial photography and control points needing to be arranged are planned; arrangement of the control points, measurement and aerial flight photography are completed; aerial photography images are processed, exposure adjusting, image splicing and geometric correcting are involved in processing, and therefore a high-resolution image of the whole survey range can be formed; speckle extracting and spatial formation ecological parameter calculating are carried out on specific type of the intertidal zone habitat. The method overcomes the defect of an existing intertidal biology survey method or a traditional topographic survey method, obtains spatial framework information of the intertidal habitat, and provides the basis for evaluating the ecological function and the ecological value of the inter-tidal habitat.

The invention discloses a system for observing and simulating a wind-wave-flow coupling field for a sea-crossing bridge, and the system comprises a wind observation system, a wave flow observation system, a tide level observation system, a data collection and storage system, and a wind-wave-flow coupling field numerical analysis system. The wind observation system comprises a plurality of wind observation stations, and the wind observation stations are located on the lands of two shores for gradient wind observation. The wave flow observation system comprises a plurality of wave flow observation stations, and the wave flow observation stations are located in nearby water areas for continuous observation of wave surfaces and layered flowing speeds. The tide level observation system comprises a plurality of tide level observation stations, and the tide level observation stations are located in water areas which are located at the place of the bridge and nearby the shores. The observation data of the spatial correlation among wind, wave, ocean current and tide level and the time synchronization and continuous observation data are stored in the data collection and storage system. Based on the above observation data, the wind-wave-flow coupling field numerical analysis system builds a wind-wave-flow coupling field numerical simulation model. The wind-wave-flow coupling field characteristic parameters which are spatially correlated and synchronous in time and act on the bridge are analyzed through combining with historical observation data after verification and correction.

The invention discloses a prefabricate type nautical fixed platform and an installing method. The prefabricate type nautical fixed platform and the installing method comprises following steps: 1) a temporary locating step: atoll bulging rocks can be used as a fulcrum, and a winding machine can be used for dragging a platform main body to a construction preinstallion position in a high tide level. A low tide level and a method of injecting water into a ballasting cabin can be used for contacting the bottom of the main body to a surface of a foundation, and locating piles are used for temporarily fixing the main body on the foundation. 2) A sinking leveling step: length that each locating pile extends out of the bottom of the main body can be controlled, and positions and levelness of the bottom of the main body can be adjusted. 3) A sinking fixing step: gravels which are in a gravel cabin can be discharged through a gravel channel to fill gaps between the surface of foundation and the bottom of the main body. Fixing of the prefabricate type nautical fixed platform can be completed. The prefabricate type nautical fixed platform and the installing method has the advantages of being stable in main body structure and low in manufacture cost. The function is easy to level. The prefabricate type nautical fixed platform and the installing method is high in planeness, accurate in fixing location and capable of being installed on the atolls or submerged rocks or sandy beaches. The prefabricate type nautical fixed platform is easy to construct and stable in fixing.

The invention discloses a combined wave power generation device provided with oscillating buoys as well as a measurement and control system of the device. The power generation device and the measurement and control system are included, multiple groups of hiding platforms can be arranged according to the installed capacity, and multiple oscillating buoys are mounted on each hiding platform. On the basis of a traditional wave power generation device provided with oscillating buoys, a hydraulic energy storage system, a tide level adaptation system and a wave detection system are designed. The hydraulic energy storage system controls energy storage and energy release of energy accumulators to drive a power generator to generate power according to the upper limit and the lower limit of energy storage pressure of an energy accumulator group in combination with real-time wave information. According to the device, multi-point energy absorption replaces traditional single-point energy absorption, immediately captured wave energy can be maximized, the measurement and control system can cooperate with the combined wave power generation device provided with the oscillating buoys, multiple defects of shorter wave period, small wave height and low energy flux density of national offshore wave energy resources can be effectively overcome, and maximum-efficiency conversion of wave energy to power and maximum-efficiency utilization of the power are realized.

The invention relates to a forecasting method of the water level of potamic tidewater. A traditional forecasting method of tidal hour comprises a time propagation method and a time isolation retardation method which weaken the influence of multiple factors, such as tides, radial flows, riverway terrain, wind power, wind directions, and the like on the tidewater to a certain extent. The forecasting method of the water level of the potamic tidewater comprises the following concrete steps: firstly, constructing a neural network model based on a neural network function in a kit function library of MATLAB 6.5 and the history data of tidewater water levels and time; then, utilizing a neural network training function in the kit function library to train a network; utilizing a simulation function to test the network; and finally, using the trained and tested neural network model to forecast a water level value of the next high tide level or the next low tide level. The invention uses the history tidewater data to forecast the water level value of short-term tidewater and can fully neglect the influence of uncertain factors, such as wind directions, rainfall, water supply and drainage, river-bed variation, and the like.

The invention discloses a method for calculating the extreme high water levels in different reappearance periods under the insufficient long-term tide level data condition. The method for calculating the extreme high water levels in different reappearance periods under the insufficient long-term tide level data condition comprises the steps that 1, topographic data, meteorological data and actually-measured water level data are obtained; 2, an ADCIRC model is established, and the reliability of the model is verified; 3, the typhoon data in a long time of a study area are obtained, joint distribution of all factors is considered by means of a Monte Carlo model, the historical occurrence scope of each parameter is defined, and one parameter is regenerated in each defined scope, so that a new storm tide driving element set is generated; 4, the extreme water levels are generated by simulating all the storm tide driving element sets by means of the ADCIRC model, and the corresponding reappearance period is calculated. According to the method for calculating the extreme high water levels in different reappearance periods, the set of comprehensive storm tide elements, combined with the Monte Carlo model, for simulating the required historical reappearance periods is formed; by the adoption of the method for calculating the extreme water levels based on the dynamic ADCIRC model, the extreme high water levels in different reappearance periods can be accurately determined under the insufficient long-term tide level data condition.

The invention discloses a method for disassembling and assembling a superaqueous bridge, which combines the buoyancy change of a barge with the waterlevel change caused by the rising and the falling of the tide level. The method can be used in a light-draft area where a floating crane can not enter, and can be effectively and safely used within the carrying capacity range of a buoyant box.

This invention discloses ocean tide power generation equipment and method, which contains V-shape check dam, overtopped dam, water storage reservoir, drainage reservoir, water intake gate, drainage sluice and power generator set. When the ocean is on the tide, open intake gate, close sluice in ebb, use the water level difference to generate electricity. Said V-shape check dam can collect sea water as the tide is small. Said invention has low cost and stable operation.

The invention provides a laser berthing and environment monitoring system, which comprises two laser range finders, an anemorumbometer, a tide level instrument, an industrial computer and an alarm. The laser range finders are arranged in parallel and spaced by a certain distance, the laser range finders, the anemorumbometer and the tide level instrument are connected with an input end of the industrial computer, and an output end of the industrial computer is connected with the alarm. The offshore distance of a ship, the speed of the ship and the angle between the ship and the wharf are detected by the aid of the laser range finders on a wharf, environment data including the wind speed, the wind direction, the temperature, the humidity, the atmospheric pressure, the tide level, the velocity of waves, the flow direction of the waves and the like can also be monitored, and accordingly berthing operation of the ship can be guided; and an alarm signal can be displayed when the berthing speed of the ship is excessively fast or the angle of the ship is over large, so that operators and ships in a field can be reminded, and accidents causing damage to wharf (ship) facilities are prevented.

The invention relates to a platform device capable of being used for large-scale wave power generation and belongs to the field of ocean energy equipment. The platform device capable of being used for large-scale wave power generation comprises a hydraulic energy storage system, pile legs, hydraulic cylinders, a floating platform, pile sleeves and pontoons. The multiple pile legs are hit into a marine foundation, the pile legs are sleeved with the pile sleeves, the floating platform is fixed to the pile sleeves, the multiple hydraulic cylinders are installed on the floating platform, the hydraulic energy storage system is installed beside the hydraulic cylinders, and the pontoons are installed on telescopic rods of the hydraulic cylinders. The pile sleeves are in clearance fit with the pile legs. The pile sleeves are in the type of hollow rings and provide buoyancy for the floating platform. The floating platform is of a cuboid box type structure. All the hydraulic cylinders are short-range telescopic hydraulic cylinders to increase the rigidity and the wind wave resistance of the telescopic rods. The platform device solves the problem about control and adaptation of the tide level difference in the wave power generation process, effectively solves the problem that an existing power generating platform cannot change along with changes of the tide level and is suitable for a multi-pontoon power generating set of a high-power unit.