22 results about "Water aging" patented technology

The embodiment of the invention provides a water supply network water quality area monitoring point optimization method which comprises the following steps: constructing and correcting a hydraulic water quality model based on monitoring data of existing monitoring points of a water supply network and a topological structure of the water supply network; a structure depth clustering algorithm is adopted, a node time sequence water quality change curve simulated by the model is combined with a topological structure of the water supply pipe network, and all nodes in the water supply pipe network are subjected to quality area division; scoring the nodes in each quality area by comprehensively considering the node coverage rate and the node water age, and sorting the nodes in each quality area according to the score from high to low; selecting a node combination of which the score is in the front and the node spacing meets a set requirement from each quality area, and generating a candidate monitoring point combination; and a monitoring point arrangement scheme meeting information gain and coverage range requirements is determined by integrating the multi-index information entropy and coverage rate optimization target and combining node spacing constraints. In this way, the layout of the monitoring points can be effectively optimized.

The invention discloses a water quality degradation early warning method and system for a water supply pipe network in a low-pressure area. The method comprises the following steps: S1, collecting topological structure data and pressure, flow, residual chlorine concentration and turbidity data of an urban water supply pipe network, and preprocessing the topological structure data and the pressure, flow, residual chlorine concentration and turbidity data; s2, constructing an initial node feature matrix, a pipe network node graph model, an adjacent matrix and a low-pressure area identification matrix; sequentially extracting a first pipe network spatial feature, a second pipe network spatial feature and a water flow stagnation time sequence feature, and fusing to obtain a space-time coupling feature; s3, extracting space-time coupling characteristics of the low-voltage area, and calculating to obtain a water age distribution matrix of each node of the low-voltage area; s4, residual chlorine attenuation characteristics are constructed, and then a low-pressure area residual chlorine concentration prediction sequence and a low-pressure area water quality degradation risk matrix are calculated; and S5, performing graded early warning. According to the method, the problems of inaccurate water age distribution inversion and inaccurate water quality risk prediction caused by residual chlorine attenuation prediction of the low-pressure area of the water supply network in a traditional method can be solved.

The invention discloses a regional water tank regulation and storage method and system. The method comprises the steps of obtaining statistical data of a water tank based on collected basic data of the water tank; based on the basic data of the water tank and the statistical data of the water tank, sequentially obtaining an inlet flow velocity fitting result, a water consumption prediction result of a future date and a water tank peak period and water age calculation result; determining a pipe network peak period based on the collected pipe network pressurization point flow data of the area corresponding to the water tank; generating a regulation and storage calculation result according to an inlet flow velocity fitting result, a water consumption prediction result of a future date, a water tank peak period, a water age calculation result and a pipe network peak period; and controlling an electric control valve of the water tank to act based on the regulation and storage calculation result. By means of the scheme, the water inlet period and the liquid level threshold value of the water tank can be dynamically adjusted, pipe network flow fluctuation in the peak period is reduced, and the pressure standard deviation of the pressurization point is reduced. Meanwhile, it can be ensured that water storage or dynamic water replenishing of the water tank is completed before the peak period, and the water utilization gap rate is reduced.

The invention discloses a lake ecological water transfer water age-carbon emission multi-objective optimization method based on an agent model. The method comprises the following steps: constructing a lake basin hydrological model based on an SCS-CN model and an impervious area method; an EFDC hydrodynamic model is constructed; estimating the average water age of the lake based on a Lagrangian particle tracking method, and estimating ecological water transfer carbon emission according to the lake inlet flow of the water transfer project; training based on a random forest regression model to obtain an agent model which takes the ecological water transfer control parameters and the basin confluence into lake flow as input and takes the average water age of the lake and the ecological water transfer carbon emission as output; constructing a multi-target collaborative optimization model for minimizing the average water age of the lake and minimizing the carbon emission of ecological water transfer according to the agent model; and solving the multi-objective collaborative optimization model. According to the method, combined optimization scheduling of water age improvement and carbon emission minimization of the urban lake area is realized, the ecological stability and low-carbon operation capability of the urban lake area are enhanced, and the method can be applied to the technical field of ecological regulation and control.

1. Name of the Design Product: Graphical User Interface for Optimizing the Water Age Control of Secondary Water Supply in Electronic Devices. 2. Use of the Design Product: For an electronic device. 3. Design Key Points of the Design Product: Lies in the content of the graphical user interface. 4. Picture or Photograph Most Indicating the Design Key Points: Front View. 5. Use of the Graphical User Interface: For displaying real-time operation information of the secondary water supply pump station. 6. Human-Computer Interaction Method of the Graphical User Interface: The front view is an overview of the secondary water supply pump station information. Click on any secondary water supply pump station in the middle of the front view to enter the interface change state diagram 1. Click on the specific secondary water supply pump station on the left side of the interface change state diagram 1 to enter the interface change state diagram 2. Click on the navigation "Data Overview" above the interface change state diagram 2 to enter the interface change state diagram 3.

The present application relates to the technical field of secondary water supply control, and particularly relates to a water tank water age monitoring and early warning method and system based on the Internet of Things, which can comprehensively acquire water tank water quality and user water consumption information through multi-modal data acquisition and fusion; can master water tank water age changes in real time, discover potential problem areas in time, and guarantee water tank water quality safety by constructing a dynamic model and identifying abnormal areas; can provide a benchmark for comparative analysis of abnormal conditions by determining normal flow areas, so that early warning processing is more targeted; can accurately evaluate the severity of abnormalities by quantifying the spectral shift distance of the coupling oscillation mode of abnormal and normal areas; can start adaptive sampling according to the spectral shift distance, dynamically improve the monitoring accuracy of abnormal areas, capture details of water age changes in time, and provide reliable data for prediction and early warning; and can predict water age mutations and generate graded early warning instructions by training a neural network, so as to facilitate relevant personnel to respond in time and reduce water tank water quality risks.

The invention provides a multi-source energy supply water tank water age self-adaptive control method and device and electronic equipment, and relates to the technical field of water supply system monitoring control, and the method comprises the steps: calculating the water age of a to-be-controlled multi-source energy supply water tank based on an initial high liquid level threshold value, an initial low liquid level threshold value, the bottom area of the to-be-controlled multi-source energy supply water tank, and the average water flow calculated according to the historical water outlet flow; estimating the theoretical average water age under the current operation parameters; and based on the adjustment decision, updating a high liquid level threshold value and / or a low liquid level threshold value obtained by comparing the current liquid level value with the initial low liquid level threshold value and the initial high liquid level threshold value, so that the average water age of the to-be-controlled multi-source energy supply water tank in actual operation dynamically and stably approaches the target water age. Energy is supplied to the system through solar energy and a lithium battery, the water quality can be evaluated in real time, and on this basis, the high and low liquid level set values are dynamically adjusted, and the average water age of the water tank is actively controlled within a preset safety range.

The invention relates to the technical field of water conservancy detection, and discloses a water service performance data matching method and system, and the method comprises the following steps: obtaining basic information; acquiring monitoring information; constructing order information of the two structure dimensions; inputting the first feature associated with the objects of the orderliness information into a basic information identification model, and outputting a pipe network basic feature; inputting the second feature associated with the object of the orderliness information into the monitoring information identification model, and outputting a monitoring feature; the pipe network basic features and the monitoring features are spliced and then input into a generation model, and current water age data of all objects are output; according to the method, the basic information and the monitoring information of the pipe network are analyzed, the features in the information are extracted, the water age of the pipe network is calculated according to the features, and compared with calculation of the water age only through pure data, the system combines the features of hydraulic power, water quality and the like, so that the generated water age is vivid in statistics, and meanwhile physical constraints and chemical constraints needed by actual pipe network operation are met.

The present invention discloses a method for implementing DMA zoning of a water supply network in a minimal pressure reduction space. This method first defines a calculation formula for the similarity between nodes, and then optimizes the coefficients in the similarity formula through the function gamultiobj in MATLAB to determine the boundary pipe segments of the zones. Then, different minimum service water pressures are set and used as constraint conditions respectively. Taking the average water age of nodes and the zoning cost after zoning as objectives, multiple equipment layout schemes on the boundary pipe segments are obtained by using the function gamultiobj, and the optimal layout scheme is selected from them according to three principles. Finally, the simulated annealing algorithm is used to find the best pipe replacement scheme, so that the water pressure of the network after zoning can meet the requirements of the specified minimum service water pressure. The DMA zoning method provided by the present invention can successfully complete the zoning without having too much impact on the overall water quality of the network after zoning, and can provide a certain theoretical basis for local water supply companies to accelerate the implementation of DMA zoning, reduce the network leakage rate, and build a smart water supply system.

The application discloses an ultrahigh anti-aging polypropylene composite material and a preparation method and application thereof. The composite material comprises the following components in parts by weight: 95-100 parts of polypropylene, 5-15 parts of ethylene-octene copolymer, 0.1-2 parts of an anti-aging compound, 2-5 parts of terpene resin, 2-5 parts of naphthenic oil, 0.5-5 parts of stearic acid and 0.5-5 parts of zinc stearate. The anti-aging compound comprises the following components in a weight ratio: 10-30% of modified graphene oxide / hydrotalcite, 10-30% of modified triazine charring agent, 20-40% of antioxidant and 20-40% of light stabilizer. The polypropylene composite material provided by the application has remarkably improved anti-aging properties, including heat-oxygen aging resistance, hot water aging resistance, light aging resistance and the like, and has good flowability and dispersibility, water resistance, yellowing resistance, good processing performance and mechanical properties and excellent comprehensive performance.

The application relates to the technical field of pipe network water quality monitoring, in particular to a water supply pipe network water quality intelligent monitoring system. The system comprises a spatial feature analysis module, which is used for collecting the water age of each monitoring point in the water supply pipe network and various water quality parameters at each time; the spatial consistency index of a target monitoring point at the same time is obtained by using the numerical change range of various water quality parameters of the target monitoring point and adjacent monitoring points upstream and downstream of the target monitoring point; a flow velocity adjustment factor acquisition module is used for acquiring the flow velocity adjustment factor of the target monitoring point at one time; a real anomaly index acquisition module is used for acquiring the real anomaly index of the target monitoring point at one time; and an anomaly score correction module is used for correcting the initial anomaly score of the target monitoring point at one time by using the flow velocity adjustment factor and the real anomaly index of the target monitoring point at one time to obtain a corrected anomaly score. The application can accurately monitor the water quality of the water supply pipe network.

The invention relates to the field of secondary water supply systems, in particular to a secondary water supply energy efficiency analysis optimization and water age and water quality control method and system.The method comprises the steps that an upper computer collects data and judges an operation mode, a real efficiency curve can be obtained according to the actual operation situation of a water pump, and the operation reasonability is judged by comparing an ideal curve; then, a targeted optimization strategy is selected, accurate control over pump room pressure, water pump starting and stopping and the like in different operation modes is achieved, meanwhile, the water consumption is predicted, the water supplementing strategy is adjusted, the water age is reduced, an optimization suggestion report is generated finally, comprehensive guidance is provided for system optimization, the energy efficiency of the secondary water supply system is overall improved, and the water age is reduced. The water supply system operation quality is improved.

The invention relates to a swimming pool water circulation filtration and energy consumption optimization control method and system, and belongs to the field of energy consumption control. The method comprises the following steps: acquiring swimming pool data, and constructing a three-dimensional water age field by establishing a water age field control equation; carrying out coupling transmission prediction based on the three-dimensional water age field, and outputting a pollutant concentration prediction map and a disinfectant concentration prediction map; a directional circulation strategy is generated based on the three-dimensional water age field, and optimized circulation system control parameters are obtained; on the basis of a directional circulation strategy, a pollutant concentration prediction map and a disinfectant concentration prediction map are combined, a disinfectant adding and water supplementing strategy is further optimized, and a comprehensive control instruction is output; and executing the comprehensive control instruction and carrying out real-time adaptive correction and learning optimization. According to the intelligent control method based on three-dimensional water age field modeling, coupling transmission prediction and multi-objective optimization, accurate, efficient and self-adaptive regulation and control of swimming pool water circulation and water quality management are achieved.

This invention provides a multi-tank peak-shaving and water storage system and method, relating to the field of water tank storage technology. The system includes: collecting water tank data and real-time pipeline flow rate, and processing this data to obtain the peak water usage period, real-time water age, and predicted water consumption for future periods for each water tank; processing the real-time pipeline flow rate under each storage area, the predicted water consumption of each water tank, the peak water usage period, the real-time liquid level, and the real-time water age to obtain the storage high liquid level for each water tank during peak water usage periods, the off-peak high liquid level during off-peak water usage periods, and the valve-opening water intake period; controlling the corresponding water tank to fill to the storage high liquid level when the real-time liquid level reaches a preset minimum liquid level during the valve-opening water intake period or during peak water usage periods, and controlling the corresponding water tank to fill to the off-peak high liquid level when the real-time liquid level does not reach the preset minimum liquid level during the valve-opening water intake period or during off-peak water usage periods. The beneficial effect is to prevent artificially created peak periods caused by scheduling based solely on the data characteristics of a single water tank.

The present invention relates to the field of water conservancy detection technology, and discloses a method and system for matching water service performance data. A method for matching water service performance data includes the following steps: obtaining basic information; obtaining monitoring information; constructing orderliness information of two structural dimensions; inputting the first feature of the object connection of the orderliness information into the basic information recognition model to output the basic characteristics of the pipe network; inputting the second feature of the object connection of the orderliness information into the monitoring information recognition model to output the monitoring characteristics; splicing the basic characteristics of the pipe network and the monitoring characteristics and inputting them into the generation model to output the current water age data of each object; By analyzing the basic information and monitoring information of the pipe network, extracting the features therein, and calculating the water age of the pipe network based on this, compared with calculating the water age only through pure data, this system combines features such as hydraulics and water quality, making the generated water age statistically realistic while meeting the physical and chemical constraints required for the actual operation of the pipe network.

The invention discloses a high-toughness waterproof epoxy adhesive and a preparation method thereof, and belongs to the technical field of adhesives. The high-toughness water-resistant epoxy adhesive is prepared from a component A and a component B, the component A is prepared from the following raw materials in parts by weight: 50 to 80 parts of bisphenol A type epoxy resin, 10 to 25 parts of carboxyl-terminated liquid nitrile rubber, 3 to 10 parts of nano montmorillonite and 1 to 5 parts of silane coupling agent; and the component B comprises the following raw materials in parts by weight: 30-50 parts of a modified alicyclic amine curing agent and 10-30 parts of silica powder. The high-toughness water-resistant epoxy adhesive disclosed by the invention is excellent in water aging resistance while keeping high peel strength and impact toughness, and is particularly suitable for bonding metal and composite material structures in ships, underwater facilities, outdoor buildings and humid environments.

Even if the proportion of the raw material derived from biomass resources is increased, a polyester elastomer resin composition derived from biomass resources that can maintain the excellent mechanical properties, storage stability, elongation retention rate after heat and humidity treatment, extrusion moldability, and water aging resistance of the polyester elastomer derived from fossil fuel resources is provided. A polyester elastomer resin composition containing a polyester elastomer derived from biomass resources in which at least one of the constituent components is derived from biomass resources and a heat stabilizer, wherein the bio-based degree of the polyester elastomer resin composition is 20 to 100%, and the oligomer content having a number average molecular weight of less than 1000 in the polyester elastomer derived from biomass resources is 2.5% by weight or less, and the melt tension of the polyester elastomer resin composition is 1.0 to 50 cN, or the 3% weight loss temperature when the temperature is raised from room temperature to 450 °C at 10 °C / min is 300 °C or higher.

The invention discloses a water supply pipe network optimization scheduling method considering a water age nonlinear target, and the method comprises the steps: removing pipelines with small influence on water age, namely pipelines with small pipe diameter, small water flow and low water age sensitivity before iterative optimization, improving the iterative optimization efficiency of subsequent training, and efficiently obtaining a scheduling scheme of a water supply pipe network. According to the method, the upper limit and the lower limit of the set water age and the upper limit and the lower limit of the pressure are used for constructing an optimization objective function, so that an optimization result is prevented from deviating to a minimum or maximum water age node in a model training process, and the average water age and the water age deviation of the whole network can be remarkably reduced.

The utility model discloses a detachable modularized zero-water-aging structure and a water purifier. The modularized zero-water-aging structure comprises a zero-water-aging waterway board and a main waterway board, the zero-stale-water waterway board is detachably connected with the main waterway board, and the return water outlet, the pure water inlet and the drainage water outlet on the zero-stale-water waterway board are respectively and correspondingly communicated with the return water inlet, the pure water outlet and the drainage water inlet of the main waterway board. The utility model has the characteristics of detachability, free combination, small volume and the like; the modular combined structure is adopted, the overall size of the water purifier is reduced, the two versions of machine types of zero water aging and non-zero water aging can be achieved only through a set of main waterway plate large mold and a set of small mold of the zero water aging module, on one hand, cost can be saved, on the other hand, whether the zero water aging module is needed or not can be selected according to requirements, and the water purifier is convenient to use. Later dismounting and maintenance are convenient, the occupied space is small, and attractiveness is achieved.

The invention belongs to the technical field of reservoir water environment prediction, and discloses a reservoir outlet water temperature rapid prediction method integrated with hydraulic connection. The problems that in an existing reservoir outlet water temperature prediction scheme, numerical simulation efficiency is low, and a machine learning model lacks physical process support of hydraulic connection and a time lag effect, so that robustness and applicability are poor are solved. The method comprises the following steps: collecting reservoir related data and scheduling data; establishing a numerical model to calculate the dam front water body water ages of typical years such as a wet water year, a flat water year and a low water year, screening water age abnormal values by adopting a Raida criterion, and determining the maximum reasonable water age; taking the maximum reasonable water age as a time sequence length of an input feature, and establishing a time sequence prediction model of historical boundary data and ex-warehouse water temperature based on an LSTM algorithm; in practical application, boundary data of the maximum reasonable water age length before a to-be-predicted time period is input into the trained LSTM time sequence prediction model, and a reservoir outlet water temperature prediction result is output.

The present invention discloses a method and system for ensuring total chlorine in secondary water supply storage equipment based on water age control. The method includes: Step S1, select a number of reference secondary water supply storage equipment in the water supply area to be predicted for total chlorine in secondary water supply storage equipment, and obtain the total chlorine decay indexes of each reference secondary water supply storage equipment at different temperatures; Step S2, determine the general total chlorine decay index of each secondary water supply storage equipment in the current water supply area; Step S3, obtain the liquid level change data of the secondary water supply storage equipment to be measured, and according to the liquid level change data of the secondary water supply storage equipment to be measured and the general total chlorine decay index, use the pre-determined total chlorine prediction model to obtain the corresponding outlet total chlorine, and compare the predicted value with the measured value to determine the applicability of the model; Step S4, according to the outlet total chlorine target control value and the total chlorine prediction model, obtain the average water age as the control requirement for the secondary water supply storage equipment in this area.

The present invention relates to the field of municipal water supply control technology, and in particular to a secondary water supply network intelligent circulation control system based on a residual chlorine attenuation model, including a domestic water tank, a supply network, a connecting pipe, a water supply pump group, a direct water supply pipe, a return pipe, a data acquisition module and a controller. The data acquisition module can collect key parameters such as the initial residual chlorine concentration of domestic water in the connecting pipe, the organic matter concentration in the water, the water temperature and the flow rate. The control module carried by the controller can establish a residual chlorine attenuation model in the secondary water supply network and the water tank, and its parameters cover the above-mentioned collected data. For the water age problem during the low-peak water use period at night, according to the flow meter and the water quality online instrument data, the model is used to calculate and compare the water age to decide whether to start the cycle. The present invention effectively solves the drawbacks of substandard residual chlorine at the end of the secondary water supply network and secondary chlorination, and ensures the water quality of the water supply through the intelligent recycling of residual chlorine, improves the safety and reliability of the secondary water supply, and has important practical value.