154 results about "Sea temperature" patented technology

The invention relates to marine hydrology parameter monitoring, and particularly discloses an optical fiber temperature-depth diving mark continuous measuring system. The system comprises a communication buoy, a main floating ball, an instrument bin, a demodulating system, a temperature-depth chain, a mooring rope, an acoustical releaser and an anchoring weight, wherein the communication buoy comprises a solar cell, a big dipper communication plate card and a satellite combined antenna; the demodulating system comprises a demodulation module and a lithium battery and is arranged in the instrument bin, and the temperature-depth chain integrates a temperature sensor and a pressure sensor for measuring temperature and pressure, and the communication buoy, the main floating ball, the instrument bin, the temperature-depth chain, the releaser and the anchoring weight are successively connected through the mooring rope. The optical depth diving mark continuous measuring system provided by the invention has the advantages that the high density, real time, continuation and long-term observation of a temperature-depth vertical section from a sea surface to 500m underwater are realized, the data is exact and reliable, and the economic benefit is high; the optical fiber temperature-depth diving mark continuous measuring system is widely applied in different marine observation operations and provides a novel observation means for measuring sea temperature-depth.

The invention discloses a sea surface wind measurement method based on an X-band marine radar and belongs to the technical field of marine dynamic environment remote sensing. The measurement method comprises three parts of radar image preprocessing, wind direction measurement and wind speed measurement. In the wind direction measurement indexes, image gradient, gray level and smoothing item are organically combined, the proportion of the image gradient, the gray level and the smoothing item is adjusted through proportionality factor and a model suitable for the sea surface wind characteristic is established, compared with the prior art, the wind direction measurement precision is improved by 68.4 percent. In the wind speed measurement indexes, when the radar is used for measuring individually, normalized radar cross section (NRCS), the actually measured wind direction and signal to noise ratio (SNR) serve as back propagation (BP) network input, compared with the traditional algorithm, the wind speed measurement precision is improved by over 84 percent. In the wind speed measurement indexes, sea boundary layer parameters serve as addition input of the BP network, so that the wind speed measurement precision of the marine radar can be further improved, and the measurement precision is improved by over 48 percent by taking air-sea temperature difference, salinity, sea level and atmospheric pressure into consideration.

The invention discloses an automatic test device for simulating an ocean tide environment. A sea water circulating controller comprises a water inlet device and a water outlet device; a water inlet pump of the water inlet device and a water outlet pump of the water outlet device are variable-frequency water pumps; the water inlet device is communicated with a water inlet of a main corrosion working chamber and a water outlet of an auxiliary corrosion working chamber respectively; the water outlet device is communicated with a water outlet of the main corrosion working chamber and a water inlet of the auxiliary corrosion working chamber respectively; and a first flow sensor is arranged in the water inlet device, and a second flow sensor is arranged in the water outlet device. A sea water temperature controller is arrange at the bottom of the main corrosion working chamber; a low liquid level controller and a high liquid level controller are fixedly arranged in the main corrosion working chamber; an air blowing port of an air blowing device and an illumination device are positioned above the high liquid level controller; and the water inlet device, the water outlet device, the sea water temperature controller, the air blowing device and the illumination device are connected with the controller respectively. The automatic test device can effectively simulate the actual ocean tide environment.

The invention provides a deep water well shed holothurians breeding method, and is characterized in that (1) fry stocking: the fry specification is 3-5cm, the stocking density in the prophase of the breeding is 40-60 heads per m2, and the fry is required to be sanitized before stocking; (2) breeding managing: a deep water well shed whose sea water temperature is 12-17 DEG C and whose salinity is not less than 25 per thousand is selected, slight flow raising method is adopted during the growth period, the daily flux is 1-3 times of the raising water, and air charging breeding is adopted when the water flows; sea mud, tail algae powder, and kelp power and auxiliary forage are fed 1-2 times every day, and the feeding amount is 1-5 percent of the weight of the holothurians. Taking full use of the establishment of the existing deep water well shed, breeding the holothurians effectively and healthily, the invention is easy to be operated and managed, and the invention can save energy and lower the consumption, can save water and reduce pollution, and can reduce the breeding period, as well as improve the breeding efficiency greatly.

The invention discloses a ship central cooling water multi-section ratio control system and method. The system comprises a ship mainframe system, a freshwater cooling pump, a cooler, a three-way valvecontroller, a PLC and an on-site operation box; the ship mainframe system is connected with the PLC and the freshwater cooling pump separately, and the freshwater cooling pump is connected with the cooler and the three-way valve controller separately. The system has the advantages that 1, the frequency of a frequency converter is controlled according to the opening degree of a valve, and then, the rotating speed of a sea water frequency conversion pump is controlled, wherein a multi-stage ratio control function is adopted for the corresponding relation between the opening degree of the valveand the frequency of the frequency converter; 2, a switching function is added, a smith hysteresis comparator is adopted, and the system stability is enhanced; 3, when the outlet sea water temperatureof a plate heat exchanger reaches the safety limit of 49 DEG C, the frequency converter of the system can be automatically switched into the maximum limit frequency for operation; 4, frequent motionsof the three-way valve are reduced.

The invention provides a multifunctional ocean water quality monitoring device. The multifunctional ocean water quality monitoring device comprises a water quality monitoring floating pontoon, a storage hoop, a supporting rod, a solar panel, an intelligent displaying apparatus, a seawater quality detection apparatus, a seawater classified storage apparatus, a supporting frame, a driving motor, a winding shaft, a guiding rope, a seawater collection apparatus, a flotage fishing apparatus, a battery mounting plate, a storage battery, a warning ball structure and a photovoltaic controller, whereinthe storage hoop is welded on the left side and the right side of the front surface of the water quality monitoring floating pontoon. By arranging an electromagnetic valve, a shallow water level collection bottle and a deep water level collection bottle, the electromagnetic valve can be opened when in a shallow water level or a deep water level, and the seawater at the shallow water level or thedeep water level can be sampled; by arranging a seawater quality sensor, a seawater temperature sensor and a seawater salinity sensor, the sweater in a detection hopper can be conveniently detected; and by arranging a classification tag, the seawater can be stored in a classifying manner, and the seawater is easy to classify when in storage and fetching.

The invention relates to a processing method for detecting clouds on sea by polar orbit meteorological satellite visible and infrared radiometer (VIRR), which belongs to the field of meteorological remote sensing technology. According to the processing method, firstly first-grade observation data of the polar orbit meteorological satellite visible and infrared radiometer (VIRR) after positioning and scaling and corresponding sea-and-land template information are identified, thereby obtaining sea observation data; for sea image elements, information such as split window brightness temperature, brightness temperature difference, satellite zenith angle and sea temperature regression coefficient is used for performing sea surface temperature inversion; according to the characteristic of the VIRR instrument, statistical analysis is performed based on a matching data set of a long time sequence, and a temperature threshold is set; when the observed brightness temperature and the inversed sea temperature or the inversed sea temperature and the climatic sea temperature of the sea image element exceed a preset threshold, a fact that the sea image element is the image element with a cloud is determined. Compared with the prior art, the temperature threshold is set by means of the clinic change rule of the sea surface temperature and long-time sequence statistical information of the satellite detecting instrument VIRR; quantitative calculation or judgment for cloudy or sunny is performed on a target; and accuracy for detecting the clouds on the sea is improved.

The invention belongs to the technical field of oil sac-type underwater glider buoyancy control and provides an oil sac-type underwater glider buoyancy accurate control method. Due to the purpose of controlling the oil sac-type underwater glider to reach neutral hovering at any working depth in floating observation, a sea temperature salt density section model is built, a corresponding seawater density is outputted according to the inputted depth, the temperature salt density section model is combined, through a hydraulic pump control algorithm, the hydraulic pump is driven to adjust the drainage volume of the oil sac, the underwater glider is controlled to reach balance between the buoyancy and the gravity at any working depth, and besides, acceleration sensor signals and pressure sensorsignals are returned to a main control system as a sign of the underwater glider to reach the neutral hovering. The characteristics that the underwater glider can reach neutral hovering are highlighted, a new application method is provided for an underwater glider observation technology, the underwater glider thus can perform in-situ observation on the internal phenomena of the sea, and the observation result is more accurate and careful.

Disclosed is a temperature controllable fluid dynamic simulating test device which comprises: a motor, a stepless speed change device, a rotary drum for fixing sample, a water storage container and a thermostat device. The thermostat is injected with see water, starting water pump when amounting to the temperature requirement; releasing the sea water into the water storage container, when the water temperature in the water storage container meeting requirement and being stable, open the motor, a relative movement between the sample and the sea water in equal temperature being generated with the drum rotation. In the dynamic simulating test, the temperature of the sea water ranges from ambient temperature to 60íµ which is adequate for researching sea water temperature impacts. The impacts on materials caused by pH value, saltiness, dissolved matter can be researched by adjusting the water medium parameter of artificial sea water.

The invention provides an optical fiber sensor used for simultaneously measuring the temperature, salinity and depth of sea water, and a preparation method thereof. A groove is made on the side deviating a fiber core through femtosecond laser etching and chemical corrosion; a segment of arc-shaped waveguide is written into cladding on the other side deviating the fiber core by utilizing the characteristics of femtosecond laser changing optical fiber refractive indexes through a rotary processing platform; the two ends of the waveguide are connected to the fiber core; and a double Mach-Zehnderinterferometer (MZI) cascade structure is made. A sensing structure can form the sensor after encapsulation. The transmission spectrum of the double MZI cascade sensor has three characteristic wavelengths with different contrast in a wavelength range of 1,300-1,600 nm, and the three characteristic wavelengths have different response sensitivity on the temperature, salinity and depth of sea water,so that the corresponding temperature, salinity and depth information of the sea water can be obtained through the change values of the characteristic wavelengths and the combination of sensitivity matrixes. The provided sensing element is compact in structure and high in mechanical strength and measuring sensitivity, and is an effective means of realizing the accurate measuring of multiple parameters of the sea water.

The invention discloses a cooling system for an offshore wind generating set. The cooling system comprises a circulating pump, a filtering device, a radiator, a heating part, a three-way electromagnetic valve and an expansion tank which are arranged in a cabin and are connected end to end in turn to form a circuit, a seawater cooler arranged in seawater, and an electric control device, wherein a temperature detection device and a pressure detection device are arranged on a connecting pipeline between the radiator and the heating part in turn; the seawater cooler is connected with the three-way electromagnetic valve and the expansion tank respectively; and the electric control device is electrically connected with the temperature detection device, the pressure detection device, the heating part, the expansion tank and the circulating pump respectively. The seawater has a low temperature and a high heat exchange mass flow rate, so compared with the conventional system taking air as a cold source, the system taking the seawater as a final cold source is suitable for the development and application of a higher-capacity wind generating set; and the seawater cooler is soaked in the seawater, so the phenomenon that the air heat exchanger of the conventional cooling system is corroded by salt mist in the long-term using process is avoided.

The invention discloses a numerical ensemble forecast extremum correction-based medium-and-long-term runoff forecast method, and relates to the field of hydrological data processing. The method comprises the steps of determining a forecast region and a forecast time period; forecasting the forecast region of the forecast time period by adopting a numerical ensemble forecast method to obtain an average runoff forecast data conclusion alpha, which is Q_Model_Forecast; forecasting the forecast region of the forecast time period by adopting a sea temperature teleconnection method to obtain an average runoff forecast data conclusion beta, which is marked as Q_SST_Forecast; calculating an anomaly Ano of Q_SST_Forecast, and when /Ano/>=50%, using Q_SST_Forecast instead of Q_Model_Forecast to serve as a final forecast conclusion; and when /Ano/<50%, using Q_Model_Forecast to serve as the final forecast conclusion. According to the method, monthly scale runoff forecast with a forecast period ofone year can be realized; and in trend prediction and extremum prediction, the method has relatively high precision compared with the numerical ensemble forecast method or a statistical forecast method often used at present.

The invention relates to a seawater temperature field prediction method based on improved EOF, and the seawater temperature field prediction method comprises the following steps: reconstructing historical data; extracting geographic information of the current sea area to form a mask file; obtaining spatial change characteristic parameters through spatial-temporal orthogonal empirical decomposition; fitting a time coefficient; forecasting the temperature in the future N days; and performing regional temperature field reconstruction. According to the seawater temperature field prediction method,on the basis of a traditional spatio-temporal empirical orthogonal decomposition method, ocean elements are reconstructed in time and space, and a good prediction result is obtained. Through multipleverifications, the seawater temperature field prediction method can achieve the long-time prediction of the temperature field. In engineering application, computing resources are saved, and practicability is high, and future ocean temperature forecasting information can be provided for ship navigation and other offshore platforms.

The invention provides a device system for simulating a metal corrosion test in a dynamic seawater environment and belongs to simulation tests and detection technologies in the field of metal corrosion. The device is composed of a refrigeration region, a test region, a temperature control region and a water pump region, wherein the temperature of seawater in the refrigeration region is kept constant, and the temperature change can be regulated and controlled; while storing water, the water pump region is capable of supplying power to seawater so as to enable the seawater to scour samples at a certain speed; the samples are placed in the test region and an electrochemical test is performed; by virtue of design of a sample fixture, the relative angle of the samples and waterflow and the sample vibration frequency can be regulated and controlled. According to the device, corrosion behavior of ships in dynamic seawater is researched from four aspects of temperature, seawater speed, scouring angle and ship vibration frequency; in combination with an electrochemical test technology, real-time continuous monitoring is performed on a whole dynamic corrosion process, so that data of material corrosion research is relatively more stereoscopic and accurate, various materials and protective measures can be better evaluated, reference is provided for development, application and protection for novel ship materials.

The invention discloses a coupling device for a sea water reverse osmosis system and a refrigeration system and an operating method of the device, belonging to the technical fields of sea water desalinization and air-conditioning refrigeration. The coupling device is composed of a sea water reverse osmosis system, a refrigeration system and a power system, wherein an energy recovery device of the sea water reverse osmosis system is coupled with the power system through a clutch; an open-type compressor of the refrigeration system is coupled with the power system through a clutch; and the refrigeration system is coupled with the sea water reverse osmosis system through the power system. The device disclosed by the invention can heat sea water entering a preheating processor by utilizing excess heat recovered by a prime motor cylinder liner, so that the temperature of the sea water entering the preheating processor is kept within the range of 25-30 DEG C, thereby enhancing the work efficiency of the reverse osmosis membrane; and since the sea water reverse osmosis system is coupled with the refrigeration system driven by the prime motor, the prime motor can still operate under rated conditions, thereby preventing the prime motor from operating in a low-load region or even in an idle region, and enhancing the thermal efficiency of the prime motor.

The invention discloses an automatic identifying system of northwest Pacific Ocean annular tropical cyclone. Firstly, an automatic identifying system specific to the northwest Pacific Ocean annular tropical cyclone is built up; typhoon satellite data, environment field, sea temperature field data to be judged are input to the automatic identifying system; the system can automatically identify a series of physical features of the typhoon on the basis of these feature parameters through pre-screening and linear judgment or BP neutral network, and warn the typhoon in accordance with the feature of the northwest Pacific Ocean annular tropical cyclone, thereby providing help for forecasting this kind of typhoon.

The invention discloses a water quality detector for mariculture. The water quality detector comprises a measuring probe, a wireless transmitting device and a receiving device, wherein the measuring probe is hung in seawater below a culture facility; the wireless transmitting device is fixed on a culture facility on the sea; the receiving device is arranged on a coast; four sensors are arranged in the measuring probe; ultraviolet light emitted by a semiconductor laser of a temperature sensor is transmitted to temperature-sensitive raster via an optical fiber and generates reflection in the raster; the temperature of seawater is measured according to the changes of the resonance peaks and resonance valleys of reflected light along with seawater temperature; a salinity sensor is an electrode type conductivity sensor; an acidity sensor employs a pH combined electrode; a dissolved oxygen sensor employs a polarographic coated oxygen electrode; a measuring signal is transmitted to signal conversion circuit in a sealed compartment via a signal line; the signal conversion circuit of the sensors is placed in the sealed compartment of the measuring probe; and a signal line connected with the wireless transmitting device is lead out from the sealed compartment. The water quality detector is convenient to use and has wide application prospects in mariculture.

The invention provides a seawater desalting device that adopts the heat superconduction of thermotubes and the remaining heat of the high-temperature emission from an engine. The device is characterized in that a water pump pumps seawater out of the pipe coil of a preheater through the inside of the heat exchange tube of a vapor condenser into a thermotube-type evaporator, which is mounted on the exhaust type of the engine; the high-temperature emission from the engine passes through a passage, in which thermotubes are arranged; the thermotubes conduct the heat of the flue gas to the seawater on the inner baffle plates of the evaporator so as to cause the temperature of the seawater to rise quickly, and produce a large amount of water vapor; the water vapor passes through a vapor tube and enters the outside of the heat exchange tube of the vapor condenser; then the water vapor is cooled by the seawater in the heat exchange tube into distilled water; after entering the pipe coil of the preheater, the distilled water is cooled by the seawater outside the heat exchange tube and discharged through a pipe for domestic use. The device has the beneficial effects of reduced cost, small resistance, as well as capabilities of desalting seawater into drinking water and meanwhile stewing food.

A high-strength curved blade profile for the steam turbine using sea temp difference energy and solar energy to generate electric energy features that the ratio of maximal thickness to chord is 0.3, the ratio of the maximal thicknessí» position to chord is 0.25, the ratio of maximal camber to chord is 0.1457, the ratio of the maximal camberí»s position to chord is 0.47 and the ratio of the radius of its back arc to chord is 0.02.

The invention relates to a seawater desalinizing technology deeply treated by a reverse osmosis membrane after mixing wastewater with seawater. The technology comprises the following steps of: mixing the wastewater which is discharged in accordance with standard with the seawater according to a certain proportion, and pretreating or mixing after the wastewater and the seawater are respectively pretreated, charging into a reverse osmosis membrane raw water box, flowing in a branching way through a booster pump and a cartridge filter, wherein one part of water enters into the reverse osmosis membrane through a high-pressure pump, and the other part of water enters into the reverse osmosis membrane through an energy recovering device which recovers the energy of high-pressure concentrated water and the booster pump, and filtering by the reverse osmosis membrane, so that the produced water enters into a reverse osmosis through production water box, to achieve the reuse standard, and can be taken as softened water or water for a boiler. The technology integrates the conventional reverse osmosis seawater desalinizing technology with the wastewater deep-treatment technology, so that the seawater temperature can be properly improved, the seawater salinity can be reduced, the recovery rate of produced water can be increased, the energy consumption of the high pressure pump can be reduced, the seawater desalinizing cost can be reduced, the wastewater resource can be recycled, and the difficulty of the shortage of water resources can be effectively remitted.

The invention belongs to the technical field of ocean structure or phenomenon identification and extraction, and discloses a refined automatic identification method, system and device for an ocean frontal surface, a terminal and an application; a deep learning model is established by using the thought of an artificial intelligence convolutional neural network, and a good identification effect is obtained. The method comprises the steps: performing gradient calculation on daily sea temperature data to generate a gradient map; inputting the generated gradient map into a deep learning model, fully learning the features of the ocean front through feature coding and feature decoding, outputting a plurality of types of pixel-level ocean front recognition results, and finally establishing a high-precision ocean front recognition deep learning model. According to the method, information such as pixel-level positions, categories, shapes and trends of various ocean frontal surfaces in the offshore area of China can be automatically recognized, and analysis of spatial and temporal characteristics and evolution modes of various frontal surfaces by ocean scholars is promoted; meanwhile, the method can be extensively applied to the field of refined identification of other types of ocean frontal surfaces such as salinity front and chlorophyll front.

The invention discloses an in-situ seawater nutrition enrichment experiment device and a use method thereof. The device comprises an experiment box, a power box is fixed at the top of the experiment box, and a first bin is formed in the power box, wherein the first bin is provided with an electric control module. A partition plate is arranged at the lower end in the experiment box; the experimentbox is divided into a second bin and a third bin through a partition plate. A sample injection module, a pipetting module and an analysis test module are sequentially arranged in the second bin. According to the in-situ seawater nutrition enrichment experiment device, the seawater temperature, illumination and water body fluctuation state are truly simulated, in-situ experiment automation is achieved through the automatic pipetting module and the analysis and test module, and heavy manpower on the sea is saved. The volume and the precision of the moved reagent can be determined according to the model of the injection pump and are preset by the processor, so high-precision reagent addition is realized; culture time can be preset through the processor, reagent types can be changed and added,a plurality of culture bags can be arranged, and the device is suitable for different types of in-situ ecological experiments.

The invention belongs to the technical field of ocean observation equipment, and discloses an ocean anchorage buoy observation control system, method and device and application. The ocean anchorage buoy observation control system comprises a buoy body, a sensor subsystem, a satellite communication subsystem, a main control subsystem, a data acquisition subsystem, a mooring subsystem, an energy control subsystem, a safety subsystem and a shore-based data receiving station. The ocean anchorage buoy observation control system provided by the invention is an installation carrier of an ocean monitoring instrument, is a comprehensive observation system capable of obtaining ocean atmosphere observation data, and can provide meteorological and hydrological data such as conventional wind speed, profile wind speed and direction, air temperature, relative humidity, air pressure, seawater temperature, seawater salinity, seawater flow velocity, seawater flow direction and the like at regular time. The ocean anchorage buoy observation control system provided by the invention has high requirements on digital sampling, system control, data acquisition, storage and processing functions, also has good stability, and can adapt to ocean working environment requirements.

The invention discloses a seawater temperature profile rapid measurement system and measurement method based on an unmanned aerial vehicle. The system comprises an unmanned aerial vehicle platform, aload rejection mechanism installed on the belly of the unmanned aerial vehicle, an airborne disposable temperature profile measurement instrument and a remote control center arranged on a shore base or a ship base. The unmanned aerial vehicle platform is used for flying to a designated sea area to put the airborne disposable temperature profile measurement instrument, and is further used for receiving seawater temperature profile measurement data and sending the seawater temperature profile measurement data to the remote control center; the load rejection mechanism is used for mounting and throwing the airborne disposable temperature profile measuring instrument; the airborne disposable temperature profile measurement instrument is used for measuring a seawater temperature profile after being thrown into water and sending the seawater temperature profile measurement data to the unmanned aerial vehicle platform; and the remote control center is used for controlling the unmanned aerial vehicle platform to fly and further used for receiving the seawater temperature profile measurement data remotely sent back by the unmanned aerial vehicle platform. The timeliness and efficiency of seawater temperature profile parameter measurement of a target sea area are improved, and the cost is reduced.