CN-122010204-A - Circulating water intelligent dosing control system and device based on water quality working condition

CN122010204ACN 122010204 ACN122010204 ACN 122010204ACN-122010204-A

Abstract

The invention provides an intelligent circulating water dosing control system and device based on water quality working conditions, and relates to the technical field of intelligent dosing control. According to the invention, by analyzing the quality of the quantized circulating water core regulation data and deciding whether to start a circulating water core regulation data fusion mechanism based on an analysis result, judging the suitability of the water treatment agent and the dosing accuracy after the analysis of the quantized circulating water core regulation data is finished, deciding whether to start dynamic adjustment of the dosing parameters of the water treatment agent based on a judgment result, and evaluating the stability of the circulating water quality after the suitability of the water treatment agent and the dosing accuracy are finished, thereby solving the problems that the correlation value of the circulating water core regulation data and the interaction rule of the agent are not specifically mined, the dosing control efficiency is attenuated and the complex working condition adaptation capability is limited.

Inventors

CAI XIAN
LEI YU
YANG LI

Assignees

广东巴沃夫环保科技有限公司

Dates

Publication Date: 20260512
Application Date: 20260225

Claims (10)

1. The circulating water intelligent dosing control system based on the water quality working condition comprises a circulating water core regulation and control data quality monitoring module, a water treatment agent suitability monitoring module and a circulating water quality stability monitoring module: the circulating water core regulation data quality monitoring module is used for carrying out quantitative analysis on the circulating water core regulation data quality in the intelligent dosing control process of the circulating water and deciding whether to start a circulating water core regulation data fusion mechanism or not according to an analysis result; The water treatment agent suitability monitoring module is used for judging the suitability and the dosing accuracy of the water treatment agent after the analysis of the quality of the quantitative circulating water core regulation data is finished, and deciding whether to start the dynamic adjustment of the dosing parameters of the water treatment agent according to the judgment result; The circulating water quality stability monitoring module is used for evaluating the circulating water quality stability after the suitability of the water treatment agent and the dosing accuracy are judged.
2. The intelligent dosing control system for circulating water based on water quality working conditions according to claim 1, wherein the analysis of the quality of the quantized circulating water core regulation data indicates whether the circulating water core regulation data meets the standard or not based on the effectiveness and the relevance index of the circulating water data, if the circulating water core regulation data meets the standard, the corresponding circulating water regulation data is marked as qualified circulating water regulation data, suitability of a water treatment agent and dosing accuracy are judged based on the qualified circulating water regulation data, and otherwise, a circulating water core regulation data fusion mechanism is adopted; The circulating water data effectiveness and correlation indexes comprise ion concentration fluctuation range, microorganism activity variation coefficient and multi-source data cross correlation degree, and the specific acquisition process comprises the following steps: the result of the ratio operation of the maximum difference value of the ion concentration monitoring values related to the water working condition in unit time and the ion concentration monitoring average value in unit time is used as the fluctuation range of the ion concentration; The result of ratio operation of the standard deviation of the microbial activity monitoring value and the microbial activity monitoring average value in unit time is used as the microbial activity variation coefficient; the method comprises the steps of obtaining pearson correlation coefficients among multi-dimensional data of circulating water based on a pearson correlation coefficient algorithm, and taking an average value of each group of pearson correlation coefficients as multi-source data cross correlation degree; the method is characterized in that whether the circulating water core regulation and control data reach the standard is judged based on the circulating water data effectiveness and the relevance index, and the specific process is as follows: judging whether the circulating water data validity and the relevance index meet the circulating water data validity and the relevance condition, if so, judging that the current circulating water core regulation and control data reach the standard, otherwise, judging that the current circulating water core regulation and control data do not reach the standard; The circulating water data effectiveness and relevance condition indicates that the fluctuation amplitude of the ion concentration is smaller than a preset fluctuation threshold, the microbial activity variation coefficient is smaller than a preset variation threshold, and the multi-source data cross-relevance is larger than a preset relevance threshold.
3. The intelligent dosing control system for circulating water based on water quality working conditions as claimed in claim 2, wherein the specific process of the circulating water core regulation data fusion mechanism is as follows: Inputting the effectiveness and relevance index of the circulating water data and the sampling frequency of the current sensor into a sampling trigger threshold adjustment mapping table for inquiring to obtain a sampling trigger threshold adjustment coefficient; Performing sensor response iterative adjustments based on the sampling trigger threshold adjustment coefficients; The sensor responds to the iterative adjustment representation, takes a sampling trigger threshold adjustment coefficient as an adjustment step length, and adjusts the sampling trigger threshold of the sensor step by step towards the direction of increasing the sampling frequency; continuously monitoring the effectiveness and the relevance index of the circulating water data, and judging whether the circulating water data meets the condition of the effectiveness and the relevance of the circulating water data; If yes, marking the corresponding circulating water regulation data as qualified circulating water regulation data, and judging the suitability of the water treatment agent and the dosing accuracy based on the qualified circulating water regulation data; If the data validity and the relevance index of the circulating water do not meet the conditions of the data validity and the relevance of the circulating water, the correction and the completion of the core regulation data of the circulating water are executed.
4. The intelligent dosing control system for circulating water based on water quality working conditions as claimed in claim 3, wherein the core regulation data of the circulating water is corrected and complemented by the following specific processes: screening the corresponding circulating water multidimensional data when the circulating water core regulation data reach the standard as a circulating water data calibration reference standard; Taking a time interval corresponding to the circulating water data calibration reference standard and the substandard circulating water core regulation and control data as input of a preset linkage correlation model, and outputting a circulating water core regulation and control data correction reference value and circulating water data correlation confidence degrees of all dimensions; backtracking correction is carried out on the core regulation data of the circulating water which does not reach the standard, and the specific process is as follows: Extracting a time interval corresponding to the core regulation data of the circulating water which does not reach the standard; Performing association analysis and parameter fitting on the circulating water core regulation and control data correction reference value and the circulating water data calibration reference value of the corresponding time interval based on a multiple linear regression algorithm to obtain quantized association logic of the core regulation and control data and the reference data; Acquiring a core regulation data correction deviation value of a quantized circulating water core regulation data theoretical correction value and an original lag circulating water core regulation data deviation; The core regulation data correction deviation value is represented by a result of performing difference operation on the circulating water core regulation data theoretical correction value and the corresponding original circulating water core regulation data; and carrying out correction and completion discrimination on the core regulation data of the circulating water based on the core regulation data correction deviation value.
5. The intelligent circulating water dosing control system based on water quality working conditions as claimed in claim 4, wherein the specific process of correcting and completing the judgment of the core regulation data of the circulating water is as follows: Judging whether the correction deviation value of the core regulation data is within a preset deviation allowable range or not; if the correction deviation value of the core regulation data is not within the preset deviation allowable range, sending a circulating water core regulation data optimization failure prompt; If the correction deviation value of the core regulation data is within the preset deviation allowable range, taking the theoretical correction value of the core regulation data of the circulating water as the true value of the core regulation data of the substandard circulating water, recalculating the effectiveness and the relevance index of the circulating water based on the theoretical correction value of the core regulation data of the circulating water, if the effectiveness and the relevance index of the circulating water accord with the effectiveness and the relevance condition of the circulating water, marking the corresponding regulation data of the circulating water as qualified regulation data of the circulating water, and judging the suitability and the adding precision of the water treatment agent based on the qualified regulation data of the circulating water, otherwise, sending the optimization failure prompt of the core regulation data of the circulating water.
6. The intelligent circulating water dosing control system based on water quality working conditions as claimed in claim 5, wherein the specific process of judging the suitability and dosing accuracy of the water treatment agent is as follows: The qualified circulating water regulation and control data are collected, and meanwhile, water treatment agent addition record data are collected; Acquiring medicament suitability and dosing accuracy indexes, including medicament efficiency attenuation rate and water quality working condition regulation efficiency indexes under different ion concentrations; performing linear fitting on the water quality working condition regulation performance indexes under different ion concentration gradients and the time sequence change data after the water treatment chemical is added based on a linear fitting method to obtain chemical performance decay rates corresponding to different ion concentrations; carrying out ratio operation on the water quality working condition parameter variation value after dosing of the reagent and the water quality working condition parameter initial value before dosing of the reagent to obtain a corresponding water quality working condition regulation and control efficiency index; Judging whether the water treatment agent suitability and the dosing accuracy reach the standards or not based on the agent suitability and the dosing accuracy index; If the agent efficiency attenuation rate is within the preset attenuation rate range and the water quality working condition regulation efficiency index is greater than the corresponding preset water quality efficiency threshold, evaluating the water quality stability of the circulating water; if any index does not meet the corresponding preset requirement, adopting the dynamic adjustment of the water treatment agent addition parameters.
7. The intelligent circulating water dosing control system based on water quality working conditions as claimed in claim 6, wherein the specific process of dynamically adjusting the dosing parameters of the water treatment agent is as follows: Inputting the agent efficiency attenuation rate, the water quality working condition regulation efficiency index, the circulating water real-time working condition data and the agent dosing history into a preset parameter adjustment model, and outputting a water treatment agent dosing amount adjustment step length and a water treatment agent dosing time sequence interval adjustment step length; The method comprises the steps of carrying out small-range gradient trial dosing of corresponding water treatment agents according to the dosing amount adjustment step length of the water treatment agents and the dosing time sequence interval adjustment step length of the water treatment agents, and obtaining agent suitability and dosing precision indexes according to preset time sequence intervals in the small-range gradient trial dosing process; The specific process of the small-range gradient trial addition is as follows: performing medicament dosing timing interval adjustment; The agent adding time sequence interval adjustment means for judging whether the agent efficiency attenuation rate is larger than the upper limit value of the preset attenuation rate range, if so, the water treatment agent adding time sequence interval adjustment step length is taken as an adjustment reference, and the water treatment agent adding time sequence interval is adjusted step by step in the direction of shortening the water treatment agent adding time sequence interval; Otherwise, judging whether the efficiency attenuation rate of the medicament is smaller than the lower limit value of the preset attenuation rate range, if so, taking the adjustment step length of the water treatment medicament addition time sequence interval as an adjustment reference, gradually adjusting the interval of the water treatment medicament addition time sequence in the direction of prolonging the water treatment medicament addition time sequence interval, otherwise, keeping the current water treatment medicament addition time sequence interval unchanged; continuously monitoring the chemical efficiency attenuation rate, if the chemical efficiency attenuation rate is within the preset attenuation rate range, adjusting the adding amount of the water treatment chemical step by step, otherwise, continuously executing the current water treatment chemical adding time sequence interval adjustment, and when the adjustment times are greater than the preset adding time adjustment maximum threshold value, sending a water treatment chemical time interval adjustment failure prompt, wherein the chemical efficiency attenuation rate is still not within the preset attenuation rate range; The step-by-step adjustment of the addition amount of the water treatment chemical means that the addition amount of the water treatment chemical is adjusted step by step in a direction in which the addition amount of the water treatment chemical increases, with the step-by-step adjustment step of the addition amount of the water treatment chemical as an adjustment reference.
8. The intelligent dosing control system for circulating water based on water quality conditions of claim 7, wherein the specific process of the circulating water quality stability assessment is as follows: collecting circulating water core regulation and control data at intervals of a preset time sequence; acquiring fluctuation amplitude of circulating water core regulation data in a preset water quality evaluation time period; If the fluctuation amplitude of all the circulating water core regulation data is smaller than the corresponding preset fluctuation threshold value, judging that the current circulating water quality is stable; If the fluctuation amplitude of any circulating core regulation data is not smaller than the corresponding preset fluctuation threshold value, uploading the corresponding circulating water core regulation data, fluctuation amplitude values and working condition records in a preset water quality assessment time period to a circulating water intelligent regulation center, and sending a circulating water quality abnormality prompt.
9. The intelligent dosing control system for circulating water based on water quality conditions of claim 7, wherein the circulating water quality stability assessment further comprises: Collecting operation condition data of circulating water in real time, wherein the operation condition data comprise circulating water flow, circulating water retention capacity, production load duty ratio and equipment start-stop frequency; Inputting the collected circulating water core regulation and control data and operation condition data into a preset low-load condition water quality risk assessment model, and outputting low-load condition water quality risk assessment parameters including agent distribution uniformity, local microorganism activity growth rate and scaling ion local enrichment coefficient under the low-load condition; If the uniformity of the agent distribution is greater than a preset uniformity threshold, the local microorganism activity growth rate is less than a preset growth threshold, and the local enrichment coefficient of scale ions is less than a preset enrichment threshold, maintaining the operation of the current water treatment agent dosing parameters; If the water quality risk assessment parameter of any low-load working condition does not meet the corresponding preset water quality risk threshold, carrying out a water pollution control medicament targeted dosing strategy based on a medicament dosing strategy optimization instruction output by the circulating water intelligent regulation center; the specific dosing strategy of the water pollution prevention and control agent indicates that the dosing frequency of the water treatment agent is gradually increased according to the iteration step length of the dosing frequency of the agent so as to compensate the agent loss caused by water retention under the low-load working condition.
10. The circulating water intelligent dosing control device based on the water quality working condition is applied to the circulating water intelligent dosing control system based on the water quality working condition according to any one of claims 1-9, and is characterized by comprising a circulating water parameter acquisition sensor, a circulating water intelligent regulation controller and a circulating water intelligent dosing metering pump.

Description

Circulating water intelligent dosing control system and device based on water quality working condition Technical Field The invention relates to the technical field of intelligent dosing control, in particular to a circulating water intelligent dosing control system and device based on water quality working conditions. Background The industrial circulating water system is widely applied to the industrial fields of electric power, chemical industry, metallurgy and the like, equipment efficiency is reduced, pipeline blockage and even safety failure are easily caused by water quality scaling, metal corrosion and microorganism breeding in the running process of the system, the problems of low reagent dosing precision, serious resource waste and the like exist in the traditional manual experiment dosing and fixed proportion dosing mode, meanwhile, along with the increasingly strict requirements of environmental protection policies on water phosphorus emission and reagent use compliance, the intelligent dosing control method of the environment-friendly water pollution control reagent such as a phosphorus-free corrosion and scale inhibitor, a sterilization algicide and the like is adopted as research emphasis and development trend in the industrial water treatment field, the research of the intelligent dosing control method of circulating water is developed, the important practical significance is realized for improving the running stability of the industrial circulating water system, reducing reagent consumption and water resource waste, and based on the requirement, a reagent adding device such as a metering pump can be adopted, the metering pump, the regulating instruction is mainly sent to the regulating mechanism, the driving mechanism, the flow regulating assembly, the suction/discharge metering pump and the intelligent control interface are mainly used, and then the reagent dosing control valve is accurately injected into the circulating water pipeline through the metering pump in the process of dosing control of the circulating water, and the running is started according to the instructions, the regulating mechanism is started or driven by the regulating the speed, the flow of the metering pump is accurately and the flow is injected into the metering pump through the metering pump. The existing intelligent circulating water dosing control method mainly comprises the steps of firstly collecting water quality indexes (such as pH value, residual chlorine, turbidity and the like) and operation condition parameters (such as flow rate, temperature, concentration multiple and the like) of circulating water through an online monitoring sensor (such as a pH sensor, a conductivity sensor, a residual chlorine sensor and the like), preprocessing the collected water quality indexes and the operation condition parameters (such as filtering, denoising and the like), transmitting the preprocessed water quality indexes and the preprocessed operation condition parameters to an intelligent circulating water control center, calculating the theoretical dosing amount of the chemical according to an artificially preset index threshold value and the chemical dosing proportion by the intelligent circulating water control center, adding water treatment chemicals (such as a phosphorus-free scale inhibitor, a sterilizing algicide and the like) to a specified position of the circulating water according to the theoretical dosing amount of the chemical, and finally, carrying out secondary detection on the water quality of the circulating water after chemical dosing, and feeding back detection results to the intelligent circulating water control center. The related technology of intelligent dosing control of circulating water mainly realizes water quality regulation and control and dosing of medicines through cooperation of monitoring, dosing and control modules, for example, a water quality intelligent monitoring system and a control method thereof are disclosed in the publication No. CN117566817B, and the system comprises a circulating water pipeline, a dosing barrel, a dosing flow pump, a sewage draining pipeline, a sewage draining valve, a water softener, a water inlet pipeline, a water quality monitoring module and a controller, wherein the circulating water pipeline is communicated with the water heat exchange system, the first water quality monitoring module is arranged on the circulating water pipeline and can monitor the water quality and the medicine concentration of the system, the dosing barrel is arranged on the dosing pipeline, the dosing flow pump can add medicines according to the water quality and the medicine concentration of the circulating water, the sewage draining pipeline is arranged, dirt in the water can be drained, the water softener is arranged on the water inlet pipeline and is communicated with the circulating water pipeline, the second water quality monitoring module is arranged on the water inlet pipeline a