31 results about "Seawater quality" patented technology

The invention discloses a seawater quality AI fusion intelligent monitoring system and method based on full spectrum data, and relates to the technical field of seawater quality monitoring. The system comprises a full-spectrum data acquisition module, a water quality initial evaluation and characteristic wave band identification module, an environment adaptive wave band selection module, a weight dynamic distribution and anomaly detection module, a multi-dimensional data fusion and optimization module and an abnormal event response and report module. The system collects original spectral data through a spectral sensor, establishes a basic water quality model after preprocessing, dynamically selects an effective wave band according to real-time environmental parameters, allocates weights, outputs water quality parameters after fusing data of a multi-dimensional sensor, and finally responds to abnormal events and generates a report. The system realizes intelligent and real-time monitoring of seawater quality, and can effectively deal with sudden pollution events and capture water quality fluctuation.

The utility model discloses a depth-adjustable seawater quality sampling device which comprises a submersible, a remote control module and a positioning module are arranged in the submersible, the depth-adjustable seawater quality sampling device further comprises a sampling mechanism, and the sampling mechanism is arranged on the submersible; according to the depth-adjustable seawater quality sampling device, through the first remote ball valve and the second remote ball valve, on-off of water flow can be accurately controlled, the water flow can be conveniently controlled at different stages, then the internal pressure of the sampling shell is controlled, and through cooperation with the one-way valve, water flow backflow can be prevented, and it is guaranteed that seawater flows in the preset direction; according to the invention, mixing of water samples at different depths is avoided, the sampling accuracy is ensured, the underwater propeller rotates to generate water flow, and the first one-way drainage valve is matched, so that the previously stored relatively shallow sea water can be drained to the outside, stratified sampling of sea water at different depths is facilitated, and the sampling accuracy is further improved.

The utility model discloses a different-depth seawater quality sampling device for ocean monitoring, which relates to the field of water quality sampling devices and comprises a sampler and a connecting seat. The clamping assembly comprises an inserting groove formed in the bottom of the connecting base, grooves formed in the two sides of the interior of the connecting base and a threaded ring arranged on the outer wall of the connecting base in a sleeving mode, an inserting block is inserted into the inserting groove, clamping holes are formed in the two sides of the inserting block, and springs are installed in the grooves. By arranging the clamping assembly, when samplers with different heights need to be used for sampling, the samplers need to be taken down for replacement, at the moment, a worker rotates a threaded ring, so that the threaded ring does not shield and limit a pressing rod any more, and at the moment, a spring is stretched to push a movable plate to reset and move, and then a clamping column is driven to reset and move; the clamping column is moved out of the clamping hole and does not clamp and limit the insertion block, and then the sampler can be taken down, so that the sampler is separated from the connecting seat.

The invention discloses a deep sea live fish transportation system and method, and relates to the technical field of deep sea culture. The deep and far sea live fish transportation system comprises a fish cabin; an outer circulation subsystem; the water body interchanging device is used for interchanging external water bodies and internal water bodies of the fish cabins; the inner circulation subsystem is used for carrying out circulation treatment on the water body in the fish cabin; the first water quality monitoring module is used for monitoring a first water quality parameter of a water body in the fish cabin; the second water quality monitoring module is used for monitoring a second water quality parameter of the external water body; the external circulation subsystem and the internal circulation subsystem are switched according to the first water quality parameter and the second water quality parameter. According to the technical scheme provided by the invention, the influence of external seawater quality change can be reduced, the bearing density of the system is improved, and a biodegradation system with complex procedures does not need to be arranged.

This invention discloses a rapid monitoring method for comprehensive spectral ecological parameters of seawater based on a cross-neural network. The method includes: receiving the UV-Vis absorption spectrum and three-dimensional fluorescence spectrum of a standard solution sample as initial spectral data; preprocessing the initial spectral data to obtain a comprehensive spectral dataset; establishing a cross-neural network model, inputting the comprehensive spectral dataset into the model, and outputting predicted values ​​of multiple seawater ecological parameter components by fusing spectral feature matrices and cross-referencing information from the UV-Vis absorption spectrum and three-dimensional fluorescence spectrum, and adjusting the network weights by comparing these predicted values ​​with the actual values; stopping training once the model accuracy meets the target, fixing the network weights, and then inputting the preprocessed spectral data of the seawater sample to be tested into the trained cross-neural network model to output the content of the ecological parameter components. This method can simultaneously measure multiple ecological parameters, improving monitoring efficiency and accuracy, and providing a key technology for the development of multi-parameter sensors for seawater quality.

The present invention relates to the technical field of ice makers. Disclosed is a hybrid seawater ice maker, comprising an ice-making module and a filtering module. A compressor and an ice-making bucket for making crushed ice are fixedly arranged in the ice-making module. The filtering module is arranged above the ice-making module. A rectangular filtering plate is arranged in the filtering module. A filtering cavity is formed in the filtering plate. A plurality of rotating filter elements are arranged in the filtering cavity. A first transmission chain is arranged between a plurality of rotating shafts in a vertical direction to link said plurality of rotating shafts. A second transmission chain is arranged between the rotating shafts in opposite faces on the two sides of the filtering plate to link said rotating shafts. An adjustment button is fixedly arranged on the uppermost rotating shaft among the plurality of rotating shafts. The structure can allow for adjustment of the filtering degree and filtering speed of the filtering module by adjusting the rotating angles of the rotating filter elements, so that the ice maker can adapt to environments having different seawater qualities, thereby achieving the optimal filtering effect and speed.

The utility model provides a special membrane pollution detection device for seawater detection, which belongs to the technical field of seawater quality detection and comprises a bearing mechanism, a shell, a water inlet component arranged at the top of the shell, a water outlet pipe fixedly mounted at the bottom of the shell and a membrane component arranged in an inner cavity of the shell. And a shunting mechanism. Through the linkage design of the rotating shaft, the connecting shaft, the dynamic baffle, the groove and the swing plate of the dynamic adjusting assembly, the flow speed and the flow direction in the flow channel can be automatically adjusted according to the actual flowing situation of seawater, formation of a local retention area is reduced, the seawater flowing path is optimized, and the seawater flowing efficiency is improved. The second pressure sensor monitors the pressure change in the flow channel in real time, provides data support for dynamic adjustment, ensures the uniformity and stability of seawater flow, effectively solves the problem of membrane pollution caused by non-uniform flow in a traditional device, remarkably improves the filtering efficiency, prolongs the service life of a membrane assembly, and reduces the maintenance cost at the same time.

The invention discloses a seawater quality on-line monitoring device and a monitoring method, and relates to the technical field of water quality monitoring. Comprising a detection cabin, the top of the detection cabin is fixedly connected with a fixed seat in a penetrating mode, a water quality monitor is installed in a blocking cover at the bottom of the fixed seat, a first elastic telescopic rod is fixedly installed at the center of the fixed seat, and a partition plate is fixed to the movable end of the first elastic telescopic rod; a triggering assembly is arranged between the sliding rod and the inner bottom wall of the detection cabin, and a sealing plate is fixed to the right end of the sliding rod. By arranging the adjusting assembly, the detection depth can be automatically adjusted according to the flow velocity of seawater, it is ensured that obtained data can represent the real characteristics of disturbed water masses, by arranging the detection cabin, the water inlet, the sealing plate and the triggering assembly, sampling and isolation detection are conducted on a water body at the specific depth, and reading is stable; and the water quality detection sensor is in a closed dry environment in a non-detection period.

The present application relates to a kind of offshore waters mariculture of multifunctional aquaculture system, comprising: aquaculture box, for cylindrical structure;Magnetic levitation power system, is set in the both ends of aquaculture box, including concentrically arranged inner ring assembly and outer ring assembly, inner ring assembly is connected with aquaculture box to carry aquaculture box, outer ring assembly is magnetically connected between inner ring assembly and is suspended by magnetic force inner ring assembly and drives inner ring assembly rotation to thereby drive aquaculture box rotation;Float, for hollow structure, at least be set in the both ends of aquaculture box, and with outer ring assembly connection to provide buoyancy;Intelligent monitoring control system, with aquaculture box connection, to at least control aquaculture box in seawater in the depth of floating;Multi-source clean energy system, with inner ring assembly, outer ring assembly power connection to provide electricity.The present application can solve the problem of low aquaculture efficiency caused by the problems such as the simple structure of aquaculture box in prior art, unable to respond to extreme weather, environmental pollution caused by seawater quality reduction, disaster early warning response deficiency.

The utility model relates to the technical field of seawater quality regulation and control, and discloses a seawater industrial aquaculture water quality regulation and control device which comprises a control device, a filter box is arranged on the side wall of the control device, a first connecting pipe is fixedly connected to the side wall of the filter box, and a third connecting pipe is fixedly connected to the interior of the first connecting pipe. A seawater tank is fixedly connected to one end of the third connecting pipe, an acid-base monitor is fixedly connected to the inner wall of the seawater tank, a fixing plate is fixedly connected to the inner wall of the seawater tank, and a quantity control assembly is fixedly connected to the side wall of the fixing plate. According to the utility model, the solution enters the quantitative tank, the first hydraulic cylinder pushes the sliding plate to drive the quantitative tank to move, the side wall connecting plate is driven to enable the rotating plate to fall, the solution in the tank is accurately controlled, the effect of quantifying the flow of the acid-base solution is achieved, and the problem that the inlet amount of the acid-base solution cannot be effectively controlled when the acid-base solution is manually added is solved. And the stability of the culture water quality regulation and control device is improved.

The application discloses an intelligent proportioning and dynamic purification circulating system of seawater-based environment-friendly mud, and particularly relates to the technical field of mud proportioning; by collecting seawater salinity, drilling displacement, borehole diameter, mud circulating pressure and other parameters in real time, a dynamic monitoring data package is constructed, and a preset algorithm is used to realize accurate dynamic adjustment of additive proportioning; after the monitoring data package is comprehensively processed according to the preset algorithm, the additive proportioning in the process of preparing seawater-based environment-friendly mud and the purification process of waste mud are dynamically adjusted; wherein the proportioning adjustment of the salt-resistant agent is determined by analyzing seawater salinity through the preset algorithm; the proportioning adjustment of the tackifier is determined by analyzing drilling displacement, borehole diameter and mud circulating pressure through the preset algorithm, and the problems that the prior art relies on manual setting of fixed proportioning according to past experience and cannot adapt to the dynamic changes of seawater quality and drilling conditions in real time, which often leads to substandard mud performance, are solved.

The invention discloses an intelligent proportioning and dynamic purification circulating system for seawater-based environment-friendly slurry, and particularly relates to the technical field of slurry proportioning. A dynamic monitoring data packet is constructed by collecting parameters such as seawater salinity, drilling displacement, borehole diameter, slurry circulating pressure and the like in real time, accurate and dynamic adjustment of the additive ratio is realized by utilizing a preset algorithm, and after the monitoring data packet is comprehensively processed according to the preset algorithm, the additive ratio is accurately and dynamically adjusted. Dynamically adjusting the additive ratio in the process of preparing the seawater-based environment-friendly slurry and the purification process of the waste slurry; wherein the proportion adjustment of the salt-resistant agent is determined by analyzing the salinity of the seawater through a preset algorithm; the proportion adjustment of the tackifier is determined by analyzing the drilling displacement, the borehole diameter and the slurry circulating pressure through a preset algorithm, and the problems that in the prior art, the fixed proportion is set by depending on manual work according to past experience, the seawater quality and the dynamic change of the drilling working condition cannot be adapted in real time, and the slurry performance is often not up to the standard are solved.

The invention discloses a seawater desulfurization water channel flow control method, a storage medium and electronic equipment. The control method comprises the steps that the PH value of a water outlet of an aeration tank, the boiler load, the original flue gas sulfur dioxide concentration and water quality parameters of open sea seawater are obtained; constructing a PH spatial distribution matrix according to the PH value and a preset number of PH sensors; the PH value, the boiler load, the original flue gas sulfur dioxide concentration and the water quality parameter serve as input quantities, variance minimization of the PH space distribution matrix serves as a target optimization function, and the orifice opening degree is output; and controlling the opening degree of the orifice of a water outlet of a lower tower water drainage pipeline arranged in the aeration tank according to the opening degree of the orifice. By implementing the device, the water flow of the water outlet of the lower tower water drainage pipeline can be adjusted, so that the PH value of each water outlet is uniform, the resistance of each water channel is hardly influenced, the power consumption of a circulating water pump is reduced, the occupied area is small, and the investment cost is reduced.

The invention discloses a composite separation membrane and a preparation method and application thereof.The composite separation membrane comprises a porous substrate and a composite membrane layer attached to at least one face of the porous substrate, and the composite membrane layer is a GO-PEI composite membrane layer formed by compounding graphene oxide and branched polyethyleneimine; and the GO-PEI composite film layer is of a single-layer or multi-layer structure formed by layer-by-layer overlapping. The composite separation membrane has an ultrathin structure, good mechanical stability and an adjustable transmission channel, can give consideration to permeability and selectivity, and can adapt to various application scenes such as gas separation, seawater filtration / purification, seawater quality detection and the like; meanwhile, a corresponding membrane assembly and device are provided, and engineering use and detection coupling are facilitated.

The present application relates to a kind of fibrous photoelectrochemical seawater antibiotic concentration detector and its preparation method, in turn including carbon nanotube fiber as substrate, alpha-Ga2O3 film layer being arranged on carbon nanotube fiber, and the inner core electrode reserved in one end of carbon nanotube fiber.The reserved inner core electrode is used as working electrode, forms passway with counter electrode by seawater, then 254nm ultraviolet light is irradiated with certain light intensity, and antibiotic concentration in seawater is fitted according to photocurrent size.The detector of the present application can work at 0V bias, with the characteristics of self-powered work;The film surface of the detector is dense, and the thickness is stable and uniform, flexible and bendable, twisted, and can be prepared in large area.The detector has great application prospect in the fields of seawater quality monitoring, wearable devices and intelligent textiles.

The invention discloses a seawater quality detector based on a wide-band absorption spectrum and a detection method, and belongs to the technical field of spectral measurement and marine environment monitoring. According to the detector, a micro spectrometer is combined with a transmission-type optical measurement unit, and an absorption spectrum of a seawater sample in a broadband range is collected and analyzed, so that rapid detection and evaluation of seawater quality parameters are realized. The micro spectrometer comprises an optical fiber coupling interface, a slit piece, a collimating mirror, a plane diffraction blazed grating, a focusing mirror and a linear array photoelectric detector. Aiming at the characteristics of high salinity, high turbidity, strong bubble and scattering background and the like of seawater, the invention provides a data processing flow of reference channel / blank calibration, scattering correction, baseline drift correction and temperature compensation, and can adapt to samples with different turbidity through a cuvette / flow cell with a replaceable optical path. The device is small in size, low in cost, good in portability and suitable for offshore field monitoring, buoy / unmanned platform integration and mariculture water quality on-line monitoring.

This invention provides a primary high-pressure pump, a reverse osmosis mechanism, and a seawater salt production system. The primary high-pressure pump uses a plunger to pressurize the seawater, making it a positive displacement pump. A servo motor drives the plunger. Positive displacement pumps offer advantages such as large and stable flow rate, high energy efficiency, compact structure, and easy precise control. Compared to asynchronous motors, servo motors are smaller and can achieve high-precision control. Therefore, this primary high-pressure pump is significantly smaller while maintaining an ideal flow rate and can respond quickly and accurately to changes in system operating conditions. This ensures stable concentrated seawater quality output from the reverse osmosis module, facilitating the stable and efficient production of edible salt.

The invention discloses a seawater quality detection method, device and equipment based on a hybrid optimization neural network, and relates to the field of environmental information monitoring, the method comprises the following steps: carrying out numerical mapping on a concentration interval of each water quality parameter corresponding to each seawater quality grade in a seawater quality standard to obtain a standard feature vector of each seawater quality grade, determining an expected comprehensive score value corresponding to each standard feature vector, and generating a training sample set; according to the training sample set, adopting a simulated annealing algorithm and a particle swarm optimization algorithm to optimize parameters of the radial basis function neural network so as to obtain a trained radial basis function neural network; and determining a comprehensive score value of the target sea area by adopting the trained radial basis function neural network according to water quality parameter measured data of the target sea area, and determining a seawater quality grade of the target sea area according to the comprehensive score value and a preset grade interval. The detection efficiency and precision of the seawater quality are improved.

The utility model relates to the technical field and discloses a pressure center type reverse osmosis seawater desalination system which comprises a reverse osmosis device, a high-pressure pump, a low-pressure booster pump, a high-pressure booster pump, an energy recovery device and a pressure center mother pipe. In the system, one part of low-pressure seawater is lifted by a low-pressure booster pump and a high-pressure pump and then enters a reverse osmosis device through a pressure center mother pipe, and the other part of low-pressure seawater is subjected to pressure exchange with concentrated seawater through an energy recovery device, is lifted by a high-pressure booster pump and then enters the reverse osmosis device; the outlet pressure can be adjusted according to the seawater quality so as to ensure the constant water yield, and the high-pressure pump adopts power frequency control. According to the pressure center type reverse osmosis seawater desalination system provided by the utility model, a single high-pressure pump can correspond to a plurality of sets of reverse osmosis devices, so that the efficiency of the high-pressure pump is improved; the reverse osmosis high-pressure pump adopts power frequency control, so that the high-pressure pump can be ensured to be in a high-efficiency interval, and the energy consumption of the reverse osmosis seawater desalination system can be reduced.

The utility model discloses a seawater quality sampling device relates to seawater sampling technical field, including assembly rod and adjusting assembly, the outside installation of assembly rod has the partial shipment board, the adjusting assembly for the position adjustment of sampling mouth is arranged in the side of partial shipment board, and adjusting assembly includes rotary joint plate, mounting bracket, collection box, collection mouth, closing plate and control rod, the end of rotary joint plate is connected with mounting bracket, and the top of mounting bracket is installed with collection box, the side of collection box is provided with collection mouth, and the outside of collection mouth is provided with closing plate, the upper end of closing plate is installed with control rod, and closing plate and control rod are fixedly connected. This seawater quality sampling device makes the position of mounting bracket and collection mouth adjustable through the waterproof motor control of rotary joint plate, avoids the inconvenient collection of seawater of seabed bottom of collection mouth position too high, and mounting bracket top hole makes collection box and sampling tube inside intercommunication convenient sampling.

The invention provides a seawater electrolysis hydrogen production method and system based on an anti-pollution proton exchange membrane, and relates to the technical field of hydrogen energy and seawater resources, and the method comprises the following steps: executing precision filtration, selective dechlorination and complexing softening pretreatment according to the initial data of the quality of seawater to be treated; according to the pretreated water quality and the performance parameters of the anti-pollution proton exchange membrane, an electrolytic tank core assembly is customized and configured, and initial operation parameters are output; an electrolytic reaction synchronous activation pulse antifouling module is started; monitoring the total impedance of the membrane based on the membrane surface state data; electrolysis and antifouling parameters are dynamically adjusted according to pollution levels; purifying the product and forming a closed loop according to the membrane pollution rate; the system comprises a seawater pretreatment module, an electrolytic tank core component configuration module, an electrolysis and pulse anti-fouling collaborative starting module, an in-situ impedance monitoring module, an electrolysis and anti-fouling parameter dynamic adjustment module and a product purification and process closed loop module, and an anti-fouling film takes sulfonated polyethersulfone as a base and is blended with nano-hydroxyapatite and polytetrafluoroethylene; and pulse antifouling and scaling inhibition, impedance matching and energy consumption control are realized, the continuous service life of the membrane is prolonged, the hydrogen purity is improved, the hydrogen production energy consumption is reduced, and large-scale seawater PEM electrolysis is facilitated.

The application discloses a sample storage and transportation device for seawater quality monitoring. The device comprises a storage and transportation box, a top cover is arranged on the top of the storage and transportation box, a locking mechanism is arranged on the inner wall of the storage and transportation box, at least two trays are slidably connected to the outer wall of the locking mechanism, at least two groups of clamping mechanisms are arranged on the top of the tray, a hole for accommodating a seawater sample bottle is arranged on the top of the tray, and the clamping mechanism acts on the seawater sample bottle placed in the corresponding hole. The locking mechanism comprises a mounting box, a ratchet wheel rotatably connected to one side of the inner wall of the mounting box, and a pawl rotatably connected to one side of the storage and transportation box. The application solves the problems of bottle body dumping and sample spilling during seawater sample storage and transportation, can be stably stacked in the storage and transportation space, improves the storage and transportation capacity, solves the problems of single-layer sample placement of the traditional device and low space utilization rate of the storage and transportation box, and solves the problem of tray deviation and movement during transportation.

The utility model discloses a seawater quality sampling device for ocean monitoring, which relates to the field of seawater quality sampling and comprises a box body, a filter plate is arranged in the box body in a sliding manner, a plurality of groups of filter holes are formed in the filter plate, and a floating plate is arranged at the bottom of the filter plate in a sliding manner. A plurality of groups of guide columns matched with the filter plate are uniformly arranged at the top of the floating plate, the top ends of the guide columns are arc-shaped, meanwhile, a sampling pipe is arranged on the outer wall of the box body and located at the bottom of the floating plate in a penetrating manner, and a control switch is arranged on the sampling pipe. Impurities in seawater can be filtered through the filter plate, in the process, it is guaranteed that no ocean impurities exist in the seawater passing through the sampling pipe subsequently, when the seawater enters the box body, the floating plate at the bottom floats upwards, at the moment, the guide columns can be inserted into the filter holes of the filter plate, and the filter plate is cleaned; and the cleaning burden of subsequent workers is reduced.

The embodiment of the invention provides an eel habitat simulation experiment device and a use method, and relates to the technical field of eel parent deep sea environment simulation experiments. The eel habitat simulation experiment device comprises a pressure container used for simulating a deep sea environment and carrying an eel experiment and a circulating water pool, and the circulating water pool is communicated with the pressure container through a pipeline, provides seawater for the pressure container and receives backflow seawater of the pressure container. A pipeline of the circulating water tank is communicated with a heat exchange unit for regulating and controlling the temperature of seawater, a microfilter for purifying the quality of the seawater and an oxygenation and aeration device for supplementing dissolved oxygen in the seawater. According to the scheme, the defects of an existing device can be overcome, accurate cooperative regulation and control of multiple factors such as pressure, temperature, flow velocity, water quality and illumination in the deep sea habitat, continuous water quality guarantee and clear behavior observation are achieved, the real deep sea habitat needed by natural breeding of eels is built, and support is provided for key research of an eel parent gonad development mechanism and the like; the eel artificial breeding technical bottleneck is helped to be broken through.

The present application provides a data assimilation method and system for predicting seawater quality change by using tide station records, and relates to the technical field of marine observation. The method comprises the following steps: selecting a tide station; calculating the global land mass migration change to obtain the sea level fingerprint effect; extracting the dynamic sea level change of the climate model and interpolating the dynamic sea level to the tide station record data; establishing an observation equation according to the selected tide station and using a sparse matrix to associate the state quantity and the observation quantity; introducing a random variable at each tide station to make up for the deficiency of the climate model in simulating the local dynamic sea level change; determining the initial time state of the tide station, optimizing and adjusting the constraint parameters of the state quantity and the correlation coefficient between adjacent tide stations; and based on Kalman filtering and smoothing, estimating the optimal state quantity and predicting the global seawater quality increase. The present application improves the accuracy of seawater quality estimation and realizes the coincidence and compatibility of model prediction and tide station observation data.

The invention discloses a correlation analysis method for multi-element seawater quality parameters, which belongs to the field of seawater detection and comprises the following steps: sampling seawater quality parameters to obtain a data set; carrying out graph structure construction on the preprocessed data set, constructing a dynamic adjacency weight network (DAWN) model, and decomposing a feature matrix F along a time dimension, namely according to columns, to obtain each time step vector; performing time extraction on the time step vector by using a time information extraction module to obtain a time extraction matrix; and performing matrix multiplication on the output updated adjacent matrix and the time extraction matrix to update the feature matrix. According to the method, the problems of low prediction precision, high computing resource consumption and incapability of visualizing the mutual relationship among the parameters caused by difficulty in effectively capturing the time lag correlation and nonlinear relationship among the parameters in the existing method are solved, the time sequence dependence among the parameters is concerned, the interaction and influence among the parameters at different time points are also considered, and the prediction accuracy is improved. Therefore, the capturing capability of the model on hidden information in the seawater quality parameter data is enhanced.

The invention relates to the technical field of chemical production control, and discloses a digital twinning-based electrolytic chlorine production full-flow intelligent regulation and control system, which comprises a data processing module, a digital twinning module, a digital twinning module and a control module, the digital twinning module is used for constructing a digital twinning model and calculating to obtain the current efficiency, the actual product concentration, the predicted value of the outlet temperature of the electrolytic cell, the electrode state and the salinity; the state estimation module is used for constructing and updating a state vector; the prediction control module is used for constructing a target function and solving the target function to obtain a control instruction; the safety monitoring module is used for executing safety protection measures; by constructing the digital twinborn model and combining a multivariable predictive control algorithm, accurate and stable control over the sodium hypochlorite yield and concentration under the fluctuation condition of multiple parameters such as seawater salinity, temperature and pH is achieved, the control precision is improved, the fluctuation range of the product concentration is narrowed, and the problem that the product quality is affected by seawater quality changes is effectively solved.

The invention discloses sample pretreatment equipment applied to seawater quality monitoring. The equipment comprises an equipment tank, the top of the equipment tank is connected with an input pipe, an inner pressurizing taper sleeve is fixed in the input pipe, a partition plate is fixed in the equipment tank, and a pretreatment assembly is arranged in the partition plate. The pretreatment assembly comprises an annular filter screen, a center column is slidably connected to the interior of the partition plate, a lifting disc is fixed to the top of the center column, an inwards-concave stress face located under the inner pressurizing taper sleeve is formed in the top of the lifting disc, and a conical scraping ring attached to the inner wall of the annular filter screen is fixedly connected to the outer ring of the top of the lifting disc; a zigzag elastic plate is fixed between the top of the partition plate and the bottom of the lifting disc. The problem that the filter screen is easily blocked by suspended impurities, algae and the like in seawater is solved, the whole structure is compact, the two functions of filter screen cleaning and seawater homogenizing are integrated, a cleaning mechanism and homogenizing equipment do not need to be additionally arranged, and the popularization prospect is excellent.

1. Name of the product in this design: In-situ Automatic Analyzer (HQ8000). 2. Purpose of this design: To monitor the nutrient content in seawater and freshwater and to evaluate the quality of freshwater and seawater (water quality testing). 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.