Intelligent dosing system for circulating water

Abstract

The application provides a circulating water intelligent dosing system, and relates to the technical field of water treatment and dosing, which comprises a dosing pool, a first detection assembly, a second detection assembly, a dosing assembly and a control system. The water inlet and the water outlet of the dosing pool are communicated with a backwater pipeline and a water delivery pipeline respectively. A plurality of stirrers are uniformly arranged on the inner bottom surface of the dosing pool. The first detection assembly is communicated with the dosing pool. The second detection assembly is communicated with the water delivery pipeline. The dosing assembly is communicated with the dosing pool through a dosing pipe. The first detection assembly, the second detection assembly and the dosing assembly are electrically connected with the control system. Through the second detection assembly, the dosing effect can be determined in time after the dosing is completed, and the dosing plan can be adjusted in time, so that the water quality of the circulating water meets the standard. Through automatic sampling detection and automatic dosing, the water quality of the circulating water is accurately controlled, and the staff is liberated from repetitive work, thereby reducing the work pressure of the staff.

Description

TECHNICAL FIELD

[0001] The present application relates to water treatment dosing technical field, especially to a circulating water intelligent dosing system. BACKGROUND

[0002] In the thermal power plant, the water used for cooling the steam turbine is called cooling water. In the thermal power plant, the cooling water accounts for a large part of the water consumption. In the area north of the Yangtze River and south of the Yellow River, some thermal power plants use open cycle cooling systems, and the water source is river water or well water. In the area north of the Yellow River, most thermal power plants use open cycle cooling systems, and the water source is well water or river water. In the open cycle cooling system, the three common problems are fouling, corrosion and slime.

[0003] Nowadays, the power plant usually takes water for testing by manual operation at regular intervals, and then adds medicine according to the test results. The work of sampling, testing and adding medicine is repeated until the next sampling time. The control of water quality adjustment is very rough, and the effect of adding medicine is not retested, which causes unstable treatment effect of circulating water and affects the working efficiency and service life of the power plant equipment. SUMMARY

[0004] The present application provides a circulating water intelligent dosing system to solve the problem of lacking retesting device for the effect of adding medicine in the prior art, which causes unstable treatment effect of circulating water and affects the working efficiency and service life of the power plant equipment.

[0005] In one aspect, the present application provides a circulating water intelligent dosing system, which comprises a dosing pool, a first detection assembly, a second detection assembly, a dosing assembly and a control system. The water inlet and outlet of the dosing pool are communicated with the backwater pipeline and the water delivery pipeline respectively. A plurality of stirrers are uniformly arranged on the inner bottom surface of the dosing pool. The first detection assembly is communicated with the dosing pool. The second detection assembly is communicated with the water delivery pipeline. The dosing assembly is communicated with the dosing pool through a dosing pipe. The first detection assembly, the second detection assembly and the dosing assembly are electrically connected with the control system.

[0006] Preferably, the first detection assembly and the second detection assembly have the same structure, which comprises a water inlet pipe, a water outlet pipe and a plurality of detection pipe sections connected in sequence. A liquid pump is installed on the water inlet pipe, and a check valve is installed on the water outlet pipe. Each detection pipe section is used for detecting one water quality parameter. The water quality parameters include: the PH value of circulating water, the electrical conductivity of circulating water, the concentration of medicine in circulating water and the turbidity of circulating water.

[0007] Preferably, the dosing assembly comprises a plurality of medicine storage cavities. Different types of medicine are stored in the medicine storage cavities. Each medicine storage cavity is provided with one dosing pipe. A dosing pump and a flow meter are arranged on the dosing pipe.

[0008] Preferably, the control system comprises:

[0009] The detection and judgment module is used to conduct water quality tests periodically and determine whether to execute a chemical dosing plan based on the water quality parameters detected by the first detection component.

[0010] The working module is used for the formulation and implementation of dosing plans;

[0011] The re-inspection module is used to control the second detection component to draw a certain amount of circulating water from the water supply pipeline into the second detection component for water quality re-inspection after a period of time after the chemical dosing is completed.

[0012] The adjustment module formulates and implements an adjustment plan based on the re-inspection results when the re-inspection results do not meet the re-inspection conditions.

[0013] Preferably, the detection and judgment module includes:

[0014] The periodic sampling unit is used to control the first detection component to draw a certain amount of circulating water from the dosing water tank at fixed intervals and enter the first detection component for water quality testing;

[0015] The judgment unit is used to compare whether the water quality parameters detected by the first detection component exceed the corresponding allowable range; when any water quality parameter detected by the first detection component exceeds the corresponding allowable range, the dosing plan is executed and the corresponding water quality parameter is determined to be an abnormal water quality parameter.

[0016] Preferably, the working modules include:

[0017] The drug type determination unit determines the types of drugs to be added based on abnormal water quality parameters;

[0018] The drug dosage determination unit determines the dosage based on the water quality parameter detection results of the first detection component;

[0019]

[0020] Among them, V Yi Vi represents the dosage of the i-th drug; V0 represents the total circulating water volume of the entire circulation system; Ci represents the total circulating water volume of the system. si C represents the actual concentration of the i-th drug in the circulating water detected by the first detection component. bi C represents the standard concentration of the i-th drug in the circulating water. Yi Let be the concentration of the i-th drug solution;

[0021] The integration unit is used to integrate and obtain a dosing plan based on drug type and dosage.

[0022] The communication unit is used to send the dosing plan to the dosing component.

[0023] Preferably, the re-inspection module includes:

[0024] The detection unit controls the second detection assembly to suck a certain amount of circulating water from the water delivery pipeline into the second detection assembly for water quality re-inspection after a period of time after the completion of the dosing;

[0025] The evaluation unit is configured to determine whether the water quality parameters detected by the second detection assembly exceed the corresponding re-inspection allowable range, and to adjust the dosing plan when any of the water quality parameters detected by the second detection assembly exceeds the corresponding re-inspection allowable range.

[0026] The supplement unit is configured to calculate a dose adjustment amount and control the dosing assembly to dose according to the adjusted dosing plan.

[0027]

[0028] V gi is the adjusted dosing amount of the i-th drug; V Yi is the initial dosing amount of the i-th drug; V0 is the circulating water volume of the entire circulating system; C bi is the standard concentration of the i-th drug in the circulating water; C fi is the actual drug concentration of the i-th drug in the circulating water detected by the second detection assembly; C si is the actual concentration of the i-th drug in the circulating water detected by the first detection assembly.

[0029] Preferably, the state evaluation module comprises:

[0030] The data recording unit is configured to record the detection results of the first detection assembly, the detection results of the second detection assembly, and the corresponding actual dosing conditions.

[0031] The evaluation unit is configured to periodically evaluate the operating states of the dosing system and the circulating system, and to alarm when the operating state of any of the dosing system and the circulating system is abnormal.

[0032] Preferably, the evaluation unit comprises:

[0033] The sub-extraction unit is configured to extract the detection results of the first detection assembly, the detection results of the second detection assembly, and the corresponding actual dosing conditions of the last N groups as evaluation samples.

[0034] The monitoring sub-unit is configured to calculate a monitoring evaluation value according to the evaluation samples, and to determine that the operating state of at least one of the dosing system and the circulating system is abnormal when the monitoring evaluation value is higher than a preset threshold.

[0035]

[0036] wherein F is the monitoring evaluation value; N is the total number of extracted evaluation samples; M is the total number of drug types; σ iis the importance weighting coefficient corresponding to the i-th drug; V ij is the actual addition amount of the i-th drug in the j-th group of evaluation samples; V im is the maximum limit value of the single addition amount of the i-th drug; T j is the actual temperature of the circulating water in the j-th group of evaluation samples; T i0 is the optimal use temperature of the i-th drug; e is the natural logarithm, ln is the logarithmic function with e as the base; and || is the absolute value symbol;

[0037] The judgment subunit calculates an auxiliary judgment value when determining that the running state of at least one of the dosing system and the circulating system is abnormal, and determines the system whose running state is abnormal according to the auxiliary judgment value;

[0038]

[0039] wherein P is the auxiliary judgment value; K1 is a drug concentration change weighting value; K2 is a water turbidity weighting value; N is the total number of groups of extracted evaluation samples; M is the total number of drug types; C ij is the drug concentration of the i-th drug in the circulating water detected by the first detection assembly in the j-th group of evaluation samples; C i(j-1) is the drug concentration of the i-th drug in the circulating water detected by the second detection assembly in the j-1-th group of evaluation samples; is the standard value of the change amount of the drug concentration of the i-th drug in the circulating water in one detection period; U is the water turbidity value in the last group of evaluation samples; and U0 is the maximum allowable value of the water turbidity;

[0040] When P is less than a preset threshold value, it is determined that the running state of the dosing system is abnormal;

[0041] When P is greater than or equal to the preset threshold value, it is determined that the running state of the circulating system is abnormal;

[0042] The alarm subunit generates alarm information and performs alarm according to the system whose running state is determined to be abnormal by the judgment subunit.

[0043] Compared with the prior art, the present application has the following beneficial effects:

[0044] By arranging the second detection assembly, the dosing effect can be determined in time after dosing, and the dosing plan can be adjusted in time, so that the water quality of the circulating water is ensured to meet the standard, and the circulating water that does not meet the standard is prevented from entering the circulating system to affect the equipment operation. The water quality of the circulating water is precisely controlled through automatic sampling detection and automatic dosing, and the staff is liberated from repetitive work, thereby reducing the work pressure of the staff. BRIEF DESCRIPTION OF DRAWINGS

[0045] In order to more clearly illustrate the technical solutions in the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0046] Figure 1 is a structural schematic diagram of the present application.

[0047] Reference signs:

[0048] 1, dosing tank; 2, first detection assembly; 3, second detection assembly; 4, dosing assembly; 5, return water pipeline; 6, water delivery pipeline; 7, agitator; 8, water inlet pipe; 9, water outlet pipe; 10, detection pipe section; 11, liquid pump; 12, check valve; 13, dosing pipe; 14, dosing pump. DETAILED DESCRIPTION

[0049] In order to make the objects, technical solutions and advantages of the present application clearer, the following will combine the drawings in the present application to clearly and completely describe the technical solutions in the present application. Obviously, the described embodiments are some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without any creative effort fall within the protection scope of the present application.

[0050] In addition, the description such as "first", "second" and the like in the present application is only for the purpose of description, and does not mean to specially indicate the order or sequence, nor to limit the present application. It is merely to distinguish the components or operations described by the same technical terms, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions and technical features of each embodiment can be combined with each other, but it must be based on the realization by those skilled in the art. When the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope of the present application.

[0051] Embodiment 1

[0052] The embodiment of the present application provides a circulating water intelligent dosing system, which comprises a dosing pool 1, a first detection assembly 2, a second detection assembly 3, a dosing assembly 4 and a control system, the water inlet and the water outlet of the dosing pool 1 are communicated with a return water pipeline 5 and a water delivery pipeline 6 respectively, a plurality of stirrers 7 are uniformly arranged on the inner bottom surface of the dosing pool 1, the first detection assembly 2 is communicated with the dosing pool 1, the second detection assembly 3 is communicated with the water delivery pipeline 6, the dosing assembly 4 is communicated with the dosing pool 1 through a dosing pipe 13, and the first detection assembly 2, the second detection assembly 3 and the dosing assembly 4 are electrically connected with the control system.

[0053] Preferably, the first detection assembly 2 and the second detection assembly 3 are the same in structure and comprise a water inlet pipe 8, a water outlet pipe 9 and a plurality of detection pipe sections 10 connected in sequence, a liquid pump 11 is arranged on the water inlet pipe 8, a check valve 12 is arranged on the water outlet pipe 9, and each detection pipe section 10 is used for detecting one water quality parameter.

[0054] Preferably, the dosing assembly 4 comprises a plurality of medicine storage cavities, different kinds of medicine solutions are stored in the medicine storage cavities, one dosing pipe 13 is arranged in each medicine storage cavity, and a dosing pump 14 and a flow meter are arranged on the dosing pipe 13.

[0055] The above technical scheme has the following beneficial effects:

[0056] During the circulating process of the circulating water, a certain amount of circulating water sample is extracted from the dosing pool 1 at a fixed time to enter the first detection assembly 2, so that the circulating water sample passes through each detection pipe section 10 in the first detection assembly 2 in sequence, thereby the water quality of the circulating water is detected, when the water quality is poor and needs to be adjusted, the dosing assembly 4 is controlled to work by the control system, and appropriate medicine is added into the dosing pool 1, during the dosing process, the circulating water in the dosing pool 1 is stirred by the stirrer 7, after the dosing is completed, a certain amount of circulating water is extracted from the water delivery pipeline 6 to enter the second detection assembly 3 as a recheck sample, the water quality of the circulating water after the dosing adjustment is detected, if the recheck water quality is qualified, no operation is performed, and if the recheck water quality is unqualified, the dosing amount is adjusted, and the remaining dosing amount is supplemented by the dosing assembly 4.

[0057] By setting the second detection assembly 3, the dosing effect can be determined in time after the dosing is completed, if the dosing effect does not reach the predetermined effect, the dosing plan can be adjusted in time to ensure that the water quality of the circulating water meets the standard, and to avoid that the circulating water whose water quality cannot meet the predetermined standard after dosing circulates in the circulating system for a long time, causing the service life of the devices in the circulating system to be shortened. By uniformly arranging a plurality of stirrers 7 in the dosing tank 1, the stirrers 7 are started before sampling and dosing, which can stir the circulating water in the dosing tank 1 evenly, ensure that the sampling of the first detection assembly 2 is representative, improve the accuracy of the detection result of the first detection assembly 2, and quickly mix the medicine with the circulating water to ensure the rapid effect of the medicine, further ensuring the detection accuracy of the second detection assembly 3. The dosing assembly 4 is provided with a plurality of medicine storage cavities, which is convenient for storing a plurality of medicines, and the staff does not need to manually switch the medicines according to the water quality, which reduces the working intensity of the staff and improves the automation degree of the dosing process.

[0058] Embodiment 2

[0059] On the basis of embodiment 1, the control system comprises:

[0060] A detection judgment module is configured to periodically perform water quality detection and determine whether to execute a dosing plan according to water quality parameters detected by the first detection assembly 2.

[0061] A working module is configured to formulate and implement the dosing plan.

[0062] A rechecking module is configured to control the second detection assembly 3 to suck a certain amount of circulating water from the water conveying pipeline 6 into the second detection assembly 3 for water quality rechecking after a period of time after the dosing is completed.

[0063] A regulating module is configured to formulate and implement a regulating plan according to the rechecking result when the rechecking result does not meet the rechecking condition.

[0064] Preferably, the detection judgment module comprises:

[0065] A periodic sampling unit is configured to control the first detection assembly 2 to suck a certain amount of circulating water from the dosing tank 1 into the first detection assembly 2 for water quality detection every fixed time interval.

[0066] A judgment unit is configured to compare whether the water quality parameters detected by the first detection assembly 2 exceed the corresponding allowable range; when any water quality parameter detected by the first detection assembly 2 exceeds the corresponding allowable range, the dosing plan is executed, and the corresponding water quality parameter is determined as an abnormal water quality parameter.

[0067] Preferably, the working module comprises:

[0068] A medicine type determination unit is configured to determine the type of medicine for dosing according to the abnormal water quality parameter.

[0069] a drug dosage determination unit configured to determine a drug dosage according to the water quality parameter detection result of the first detection assembly 2;

[0070]

[0071] wherein, V Yi is the drug dosage of the i-th drug; V0 is the circulating water volume of the entire circulating system; C si is the actual concentration of the i-th drug in the circulating water detected by the first detection assembly 2; C bi is the standard concentration of the i-th drug in the circulating water; C Yi is the drug liquid concentration of the i-th drug;

[0072] a consolidation unit configured to consolidate the drug dosage plan according to the drug type and the drug dosage;

[0073] a communication unit configured to send the drug dosage plan to the drug assembly.

[0074] Preferably, the rechecking module comprises:

[0075] a detection unit configured to control the second detection assembly 3 to suck a certain amount of circulating water from the water delivery pipeline 6 into the second detection assembly 3 for water quality rechecking after the drug addition is completed;

[0076] an evaluation unit configured to judge whether the water quality parameters detected by the second detection assembly 3 are beyond the corresponding rechecking allowable range, and adjust the drug dosage plan when any of the water quality parameters detected by the second detection assembly 3 is beyond the corresponding rechecking allowable range;

[0077] a supplement unit configured to calculate the dosage adjustment amount and control the drug assembly 4 to add drugs according to the adjusted drug dosage plan;

[0078]

[0079] wherein, V gi is the adjusted drug dosage of the i-th drug; V Yi is the initial drug dosage of the i-th drug; V0 is the circulating water volume of the entire circulating system; C bi is the standard concentration of the i-th drug in the circulating water; C fi is the actual drug concentration of the i-th drug in the circulating water detected by the second detection assembly 3; C si is the actual concentration of the i-th drug in the circulating water detected by the first detection assembly 2.

[0080] The above technical solution has the following beneficial effects:

[0081] The first detection assembly 2 periodically extracts a certain amount of circulating water from the dosing tank 1 according to a specified sampling interval time for water quality detection. When any of the water quality detection results exceeds the corresponding allowable range, any of the water quality parameters of the circulating water exceeds the corresponding allowable range, which will cause scale to be generated in the equipment in the circulating system or the parts of the circulating device to be corroded. The type of the added medicine is selected according to the abnormal water quality parameter, the medicine addition amount is calculated based on the target concentration and the detected actual concentration of the corresponding medicine, the dosing plan is obtained by combining the type of the medicine and the dosing amount, and the dosing assembly 4 is driven to dose according to the dosing plan.

[0082] A certain time after the dosing is completed, the second detection assembly 3 extracts a certain amount of circulating water from the water conveying pipeline 6 for water quality re-inspection. The circulating water in the water conveying pipeline 6 is the circulating water about to enter the circulating system, and the sampling from the water conveying pipeline 6 can more accurately reflect the water quality of the circulating water after dosing, thereby improving the accuracy of the re-inspection result. When the re-inspection result exceeds the corresponding re-inspection allowable range, it proves that the effect after dosing is not ideal, and the corresponding medicine needs to be added again. Avoiding that the water quality of the circulating water flowing in the circulating system does not meet the requirements within the interval time of the two samplings of the first detection assembly 2, causing the equipment in the circulating system to scale or be corroded, affecting the working effect and service life of the related equipment.

[0083] By setting re-inspection after dosing, the qualified water quality in the circulating system is ensured, the excellent working effect and service life of the equipment in the circulating system are ensured, and the situation that the effect is not ideal after single dosing and needs to be detected next time is avoided, causing the unqualified circulating water to work in the circulating system for a long time. By setting the detection assembly including the first detection assembly 2 and the second detection assembly 3 to periodically and automatically detect the water quality, the dosing plan is automatically formulated according to the detection result when the water quality is poor, and the dosing assembly 4 is driven to automatically dose, realizing the automatic control of the circulating water quality and the automatic dosing, and freeing the staff from repetitive work, thereby reducing the work intensity of the staff.

[0084] Embodiment 3

[0085] On the basis of the embodiment 2, the state evaluation module further includes:

[0086] The data recording unit is configured to record the detection results of the first detection assembly 2, the detection results of the second detection assembly 3, and the corresponding actual dosing conditions.

[0087] The evaluation unit is configured to periodically evaluate the running states of the dosing system and the circulating system, and to alarm when the running state of any of the dosing system and the circulating system is abnormal.

[0088] Preferably, the evaluation unit includes:

[0089] a sampling subunit configured to extract the detection results of the last N groups of the first detection assembly 2, the detection results of the second detection assembly 3 and the corresponding actual dosing conditions as evaluation samples;

[0090] a monitoring subunit configured to calculate a monitoring evaluation value according to the evaluation samples, and determine that the running state of at least one of the dosing system and the circulating system is abnormal when the detection evaluation value is higher than a preset threshold value;

[0091]

[0092] wherein F is the monitoring evaluation value; N is the total number of the extracted evaluation samples; M is the total number of the drugs; σ i is the importance weighting coefficient corresponding to the ith drug (the value is greater than 0 and less than 1); V ij is the actual addition amount of the ith drug in the jth group of evaluation samples; V im is the maximum limit value of the single addition amount of the ith drug; T j is the actual temperature of the circulating water in the jth group of evaluation samples; T i0 is the optimal use temperature of the ith drug; e is the natural logarithm, ln is the logarithmic function with e as the base; || is the absolute value symbol;

[0093] a judgment subunit configured to calculate an auxiliary judgment value when it is determined that the running state of at least one of the dosing system and the circulating system is abnormal, and determine the system whose running state is abnormal according to the auxiliary judgment value;

[0094]

[0095] wherein P is the auxiliary judgment value; K1 is the drug concentration change weighting value (the value is greater than 0 and less than 1); K2 is the water turbidity weighting value (the value is greater than 0 and less than 1); N is the total number of the extracted evaluation samples; M is the total number of the drugs; C ij is the drug concentration of the ith drug in the circulating water detected by the first detection assembly 2 in the jth group of evaluation samples; C i(j-1) is the drug concentration of the ith drug in the circulating water detected by the second detection assembly 3 in the j-1th group of evaluation samples; is the standard value of the change amount of the drug concentration of the ith drug in the circulating water in one detection period; U is the water turbidity value in the last group of evaluation samples; U0 is the maximum allowable value of the water turbidity;

[0096] when P is less than a preset threshold value, it is determined that the running state of the dosing system is abnormal;

[0097] when P is greater than or equal to a preset threshold value, it is determined that the running state of the circulating system is abnormal;

[0098] The alarm subunit generates alarm information to alarm according to the system whose running state is abnormal determined by the judging subunit.

[0099] In the embodiment, one detection cycle refers to a time period between two detections of the first detection component 2.

[0100] The above technical solution has the following beneficial effects:

[0101] During the operation of the dosing system, the data recording unit records relevant data, and the recorded data is analyzed periodically to determine whether the running state of the dosing system and the circulating system is normal, so that the large-dose input of the medicine caused by the abnormality of the dosing system or the circulating system is avoided, and the waste of the medicine is avoided.

[0102] Through the periodic evaluation of the running state of the dosing system and the circulating system, the abnormality of the running state of the dosing system and the circulating system can be found in time, and the alarm information is generated to alarm and remind the staff to check and maintain in time, so that the safety of the system operation is ensured, the position where the running state is abnormal is inferred before the alarm, the area of the staff during the maintenance is reduced, the working strength of the staff is reduced, and the maintenance efficiency is improved.

[0103] By The ratio of the addition amount of each medicine to the maximum limit of the specified addition amount is calculated, so that the amount of the medicine addition amount is reflected according to the ratio, and the actual temperature of the circulating water is corrected to obtain the evaluation value of each medicine during the addition process. The average evaluation value of multiple groups of evaluation samples is calculated to improve the accuracy of the evaluation value. If the evaluation value is too large, it can be inferred that a large amount of medicine needs to be added for adjustment during each detection, so that it can be inferred that at least one of the running state of the dosing system and the circulating system is abnormal and needs to be maintained.

[0104] By The difference between the concentration change value of each medicine in each detection cycle and the standard value is calculated, and the The ratio of the actual turbidity value of the circulating water during the last detection to the maximum allowable turbidity value is considered, so that the degree of change of the water quality during the circulating process of the circulating water is comprehensively judged, and whether the running state of the circulating system is abnormal is determined. If the running state of the circulating system is not abnormal, it can be inferred that the running state of the dosing system is abnormal.

[0105] It should be pointed out finally that the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit the same; and although the present application has been described in detail with reference to the foregoing embodiments, it should be appreciated by those skilled in the art that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features thereof can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A circulating water intelligent dosing system, characterized in that, The system includes a dosing tank (1), a first detection component (2), a second detection component (3), a dosing component (4), and a control system. The inlet and outlet of the dosing tank (1) are connected to the return water pipeline (5) and the water supply pipeline (6), respectively. Several agitators (7) are evenly arranged on the bottom surface of the dosing tank (1). The first detection component (2) is connected to the dosing tank (1), the second detection component (3) is connected to the water supply pipeline (6), and the dosing component (4) is connected to the dosing tank (1) through the dosing pipe (13). The first detection component (2), the second detection component (3), and the dosing component (4) are electrically connected to the control system. The control system includes: a detection and judgment module, a working module, a re-inspection module, an adjustment module, and a status evaluation module; The status assessment module includes: The data recording unit is used to record the detection results of the first detection component (2), the detection results of the second detection component (3), and the corresponding actual drug dosing situation; The evaluation unit, including a sampling unit, a monitoring subunit, and a judgment subunit, is used to periodically evaluate the operating status of the dosing system and the circulation system. When the operating status of any component in the dosing system or the circulation system is abnormal, an alarm is triggered. The monitoring subunit is used to calculate the monitoring evaluation value based on the evaluation sample. When the detection evaluation value is higher than the preset threshold, it is determined that the operating status of at least one of the dosing system and the circulation system is abnormal. ； Where F is the monitoring and evaluation value; N is the total number of evaluation sample groups; and M is the total number of drug types. The importance weighting coefficient for the i-th drug; Let i be the actual amount of drug added in the j-th evaluation sample; This represents the maximum single-dose limit for the i-th drug; The actual temperature of the circulating water in the j-th evaluation sample; Let be the optimal operating temperature for the i-th drug; e is the natural logarithm, and ln is the logarithmic function with base e; It is the absolute value symbol.

2. The intelligent dosing system for circulating water according to claim 1, characterized in that, The first detection component (2) and the second detection component (3) have the same structure, including an inlet pipe (8), an outlet pipe (9) and several detection pipe sections (10) connected in sequence. A liquid pump (11) is installed on the inlet pipe (8) and a check valve (12) is installed on the outlet pipe (9). Each detection pipe section (10) is used to detect a water quality parameter, including: circulating water pH value, circulating water conductivity, drug concentration in circulating water and circulating water turbidity.

3. The intelligent dosing system for circulating water according to claim 1, characterized in that, The dosing assembly (4) includes several drug storage chambers, which store different types of liquid drugs. Each drug storage chamber is equipped with a dosing pipe (13), and the dosing pipe (13) is equipped with a dosing pump (14) and a flow meter.

4. The intelligent dosing system for circulating water according to claim 1, characterized in that, The control system includes: The detection and judgment module is used to conduct water quality tests periodically and determine whether to execute the dosing plan based on the water quality parameters detected by the first detection component (2). The working module is used for the formulation and implementation of dosing plans; The re-inspection module is used to control the second detection component (3) to draw a certain amount of circulating water from the water supply pipeline (6) into the second detection component (3) for water quality re-inspection after a period of time after the dosing is completed; The adjustment module formulates and implements an adjustment plan based on the re-inspection results when the re-inspection results do not meet the re-inspection conditions.

5. The intelligent dosing system for circulating water according to claim 4, characterized in that, The detection and judgment module includes: A periodic sampling unit is used to control the first detection component (2) to draw a certain amount of circulating water from the dosing water tank (1) at fixed intervals and enter the first detection component (2) for water quality testing; The judgment unit is used to compare whether the water quality parameters detected by the first detection component (2) exceed the corresponding allowable range; when any water quality parameter detected by the first detection component (2) exceeds the corresponding allowable range, the dosing plan is executed and the corresponding water quality parameter is determined to be an abnormal water quality parameter.

6. The intelligent dosing system for circulating water according to claim 5, characterized in that, The working modules include: The drug type determination unit determines the types of drugs to be added based on abnormal water quality parameters; The drug dosage determination unit determines the dosage based on the water quality parameter detection results of the first detection component (2); ； in, This represents the dosage of the i-th drug; The circulating water volume of the entire circulation system; The actual concentration of the i-th drug in the circulating water as detected by the first detection component (2); Let be the standard concentration of the i-th drug in the circulating water; Let be the concentration of the i-th drug solution; The integration unit is used to integrate and obtain a dosing plan based on drug type and dosage. The communication unit is used to send the dosing plan to the dosing component.

7. The intelligent dosing system for circulating water according to claim 6, characterized in that, The re-inspection module includes: After the dosing is completed for a period of time, the detection unit controls the second detection component (3) to draw a certain amount of circulating water from the water supply pipeline (6) into the second detection component (3) for water quality retesting; The evaluation unit is used to determine whether the water quality parameters detected by the second detection component (3) exceed the corresponding retest allowable range. When any one of the water quality parameters detected by the second detection component (3) exceeds the corresponding retest allowable range, the dosing plan is adjusted. The supplementary unit is used to calculate the dose adjustment amount and control the dosing component (4) to dosing according to the adjusted dosing plan; ； in, This refers to the adjusted dosage of the i-th drug. This represents the initial dosage of the i-th drug; The circulating water volume of the entire circulation system; Let be the standard concentration of the i-th drug in the circulating water; The actual drug concentration of the i-th drug in the circulating water detected by the second detection component (3); The actual concentration of the i-th drug in the circulating water as detected by the first detection component (2).

8. The intelligent dosing system for circulating water according to claim 1, characterized in that, The evaluation units include: The sampling unit is used to extract the detection results of the last N groups of the first detection component (2), the detection results of the second detection component (3) and the corresponding actual drug dosing as evaluation samples; The judgment subunit calculates an auxiliary judgment value when it determines that the operating status of at least one of the dosing system and the circulation system is abnormal, and determines the system whose operating status is abnormal based on the auxiliary judgment value. ； Where P is an auxiliary judgment value; Weighted value for changes in drug concentration; The weighted value is the turbidity of the water body; N is the total number of sample groups for evaluation; M is the total number of drug types. The concentration of the i-th drug in the circulating water detected by the first detection component (2) in the j-th evaluation sample; The concentration of the i-th drug in the circulating water detected by the second detection component (3) in the j-1 group of evaluation samples; U represents the standard value of the change in the concentration of the i-th drug in the circulating water within a detection cycle; U is the turbidity value of the water in the last set of evaluation samples. This refers to the maximum permissible value for turbidity in water bodies. If P is less than the preset threshold, it is determined that the operation of the dosing system is abnormal. If P is greater than or equal to the preset threshold, it is determined that the operating state of the cyclic system is abnormal. The alarm subunit generates alarm information and issues an alarm based on the judgment subunit's determination that the system's operating status is abnormal.

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