Intelligent scale and corrosion control method and system for heat exchanger

Abstract

The application provides a heat exchanger intelligent scale inhibition and corrosion control method and system, comprising obtaining water quality characteristic parameters of circulating water, when the parameters exceed a preset trigger threshold, determining the operation parameters of a physical field generating device according to the extent of the threshold exceeding, then determining the dosing parameters of a chemical agent dosing device in combination with the operation parameters and the current temperature of the circulating water, and finally controlling the two devices to operate according to the corresponding parameters respectively. The method realizes accurate response to the dynamic change of the water quality of the circulating water, achieves the synergistic scale inhibition and corrosion control of the physical field and the chemical agent, avoids the problems of agent waste, equipment corrosion and insufficient cleaning, improves the descaling efficiency, adapts to the operation requirements of the central heating heat exchange system, and guarantees the stable and energy-saving operation of the heat exchange equipment and the heating unit.

Description

Technical Field

[0001] This invention relates to the field of heat exchanger water treatment technology, and in particular to a smart scale inhibition and corrosion control method and system for heat exchangers. Background Technology

[0002] In urban centralized heating heat exchange systems, scale and corrosion inhibition treatment of heat exchangers often adopts traditional timed chemical dosing or fixed-frequency ultrasonic cleaning. This method cannot respond to changes in circulating water quality in real time and dynamically, which can easily lead to two adverse consequences: First, the chemical dosing lacks specificity, resulting in chemical waste and even the problem of acid corrosion of metal heat exchange equipment after the scale inhibitor degrades; second, the fixed frequency of ultrasonic cleaning can easily lead to insufficient cleaning, resulting in scale buildup in the heat exchanger and affecting heat exchange efficiency.

[0003] The aforementioned problems not only increase the operating costs of the heat exchange system but also reduce the service life of the heat exchange equipment. Furthermore, they make it difficult to efficiently match the heating parameters after the heating unit is upgraded, thereby affecting the energy consumption of the heating network and the stability of the heating unit's power generation and heating, and failing to meet the energy-saving and carbon-reducing operation requirements of the heating system.

[0004] Therefore, how to achieve precise response to dynamic changes in circulating water quality, achieve synergistic scale inhibition and corrosion slowing by physical fields and chemical agents, avoid problems such as agent waste, equipment corrosion and insufficient cleaning, improve descaling efficiency, adapt to the operation requirements of centralized heating heat exchange systems, and ensure the stable and energy-saving operation of heat exchange equipment and heating units are technical problems that urgently need to be solved by those skilled in the art. Summary of the Invention

[0005] This invention provides a smart scale and corrosion inhibition control method and system for heat exchangers, which can achieve precise response to dynamic changes in circulating water quality, achieve synergistic scale and corrosion inhibition by physical fields and chemical agents, avoid problems such as agent waste, equipment corrosion and insufficient cleaning, improve descaling efficiency, adapt to the operation requirements of centralized heating heat exchange systems, and ensure stable and energy-saving operation of heat exchange equipment and heating units.

[0006] On one hand, the present invention provides a smart scale and corrosion inhibition control method for heat exchangers, comprising: Obtain water quality characteristic parameters of circulating water; When the water quality characteristic parameter exceeds a preset trigger threshold, the operating parameters of the physical field generator are determined according to the degree to which the water quality characteristic parameter exceeds the trigger threshold. Based on the operating parameters and the current temperature of the circulating water, determine the dosing parameters of the chemical dosing device; The operation of the physical field generating device is controlled according to the operating parameters, and the operation of the chemical agent dosing device is controlled according to the dosing parameters.

[0007] On the other hand, the present invention also provides an intelligent scale and corrosion inhibition control system for heat exchangers, comprising: The acquisition module is used to acquire water quality characteristic parameters of circulating water; The first determining module is used to determine the operating parameters of the physical field generating device based on the degree to which the water quality characteristic parameters exceed the preset trigger threshold when the water quality characteristic parameters exceed the trigger threshold. The second determining module is used to determine the dosing parameters of the chemical agent dosing device based on the operating parameters and the current temperature of the circulating water. The control module is used to control the operation of the physical field generating device according to the operating parameters, and to control the operation of the chemical agent dosing device according to the dosing parameters.

[0008] The intelligent scale and corrosion inhibition control method and system for heat exchangers provided by this invention constructs a closed-loop intelligent control system of "sensing-decision-execution". It relies on online monitoring equipment to acquire real-time water quality characteristic parameters of the circulating water. When the water quality characteristic parameters exceed a preset trigger threshold, the operating parameters of the physical field generator are dynamically determined based on the degree of threshold exceedance. Then, combined with the operating parameters of the physical field generator and the current temperature of the circulating water, the dosing parameters of the chemical agent dosing device are accurately calculated. Finally, the physical field generator and the chemical agent dosing device are synchronously controlled to operate collaboratively according to the determined parameters, achieving deep linkage between physical field treatment and chemical agent dosing. This enables real-time and accurate response to dynamic changes in circulating water quality, avoiding problems such as agent waste, equipment corrosion, and insufficient cleaning caused by traditional fixed methods. Furthermore, the synergistic effect of the physical field and chemical agents improves descaling efficiency. Simultaneously, it adapts to the heating parameter requirements of urban centralized heating heat exchange systems, reducing pipeline energy consumption, fully releasing the heating capacity of the heating unit, and ensuring the energy-saving and stable operation of the heat exchange system and the heating unit. Attached Figure Description

[0009] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0010] Figure 1 This is a schematic flowchart of the intelligent scale and corrosion inhibition control method for heat exchangers provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the intelligent scale and corrosion inhibition control system for heat exchangers provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of the electronic device provided in an embodiment of the present invention. Detailed Implementation

[0011] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0012] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this invention, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0013] Figure 1 This is a schematic flowchart of the intelligent scale and corrosion inhibition control method for heat exchangers provided in an embodiment of the present invention.

[0014] like Figure 1 As shown, the intelligent scale and corrosion inhibition control method for heat exchangers provided in this embodiment of the invention mainly includes the following steps: 101. Obtain the water quality characteristic parameters of the circulating water; In a specific implementation process, the circulating water of the heat exchanger can be monitored in real time using an online hardness monitor to obtain the Ca²⁺ content in the circulating water. + +Mg² + The concentration, a core water quality characteristic parameter, is simultaneously monitored by a temperature sensor to collect the current temperature of the circulating water.

[0015] 102. When the water quality characteristic parameter exceeds a preset trigger threshold, the operating parameters of the physical field generating device are determined according to the degree to which the water quality characteristic parameter exceeds the trigger threshold; In a specific implementation process, the trigger threshold for this water quality characteristic parameter can be preset to 250 mg / L. When the detected Ca²⁺ + +Mg² + When the concentration exceeds 250 mg / L, the operating parameters of the 20–40 kHz adjustable ultrasonic generator, which serves as the physical field generating device, are determined based on the specific value of the concentration exceeding the threshold. These parameters include frequency, field strength, and duration of action.

[0016] Specifically, the process of determining the operating parameters of the physical field generator based on the degree to which the water quality characteristic parameters exceed the trigger threshold may include: Calculate the deviation between the real-time value of the water quality characteristic parameter and the trigger threshold; input the deviation into a preset piecewise nonlinear function mapping model, and apply different nonlinear mapping rules according to the interval in which the deviation is located to generate basic operating parameters of the physical field generator; obtain the real-time change rate of the water quality characteristic parameter, and generate a correction coefficient based on the real-time change rate; use the correction coefficient to correct the basic operating parameters, and use the corrected parameters as the operating parameters of the physical field generator.

[0017] In detail, taking circulating water Ca² + +Mg² + Taking a water quality characteristic parameter with a trigger threshold of 250 mg / L as an example, first calculate the monitored Ca²⁺ concentration. + +Mg² + The difference between the real-time concentration value and 250 mg / L is the deviation.

[0018] A piecewise nonlinear function mapping model is pre-built in the system. The calculated deviation is input into the piecewise nonlinear function mapping model. Based on the different numerical ranges in which the deviation falls, the corresponding nonlinear mapping rule is selected to generate the basic operating parameters of the ultrasonic generator, including the basic frequency, basic field strength, and basic action time percentage.

[0019] Simultaneously, by continuously collecting data from online monitoring equipment, Ca² is calculated. + +Mg² + The change in concentration per unit time, i.e. the real-time rate of change of this water quality characteristic parameter, generates a correction coefficient that increases the intensity of the physical field if the concentration shows a rapid upward trend, and generates a suitable mild correction coefficient if the concentration increases at a slower pace.

[0020] Finally, the generated correction coefficients are coupled with the basic operating parameters for calculation, and the basic operating parameters are adjusted. The corrected parameters are the final operating parameters of the ultrasonic generator in actual operation.

[0021] This embodiment generates basic operating parameters by combining the deviation amount with a piecewise nonlinear function mapping model, so that the operating parameters of the physical field generator are precisely matched with the degree of water quality deviation from the threshold. At the same time, the real-time change rate of water quality characteristic parameters is introduced to generate correction coefficients to dynamically correct the basic operating parameters, which further improves the accuracy and real-time performance of the operating parameter determination, avoids the situation of excessive or insufficient physical field treatment intensity, and makes the operation of the physical field generator more in line with the dynamic change law of circulating water quality.

[0022] In a specific implementation, the piecewise nonlinear function mapping model includes: When the deviation is less than the first preset value, a first nonlinear growth function is used to make the basic operating parameters increase slowly as the deviation increases; When the deviation is between the first preset value and the second preset value, a second nonlinear fast response function is used to accelerate the growth of the basic operating parameters as the deviation increases. When the deviation exceeds the second preset value, a limiting saturation function is used to restrict the basic operating parameters within the preset maximum safety threshold.

[0023] In detail, this embodiment is applied to the scenario of determining the operating parameters of the ultrasonic generator in a central heating heat exchanger in a city. The first and second preset values ​​of the deviation are set in advance according to the operating requirements of the heat exchange system. At the same time, the maximum safety threshold of the basic operating parameters of the ultrasonic generator is set. This threshold is the upper limit of the physical field intensity for safe operation of the equipment and adaptation of the heat exchange system.

[0024] When Ca² + +Mg² + When the concentration deviation is less than the first preset value, it indicates that the risk of water scaling is low. The first nonlinear growth function is used to generate basic operating parameters, so that the basic parameters such as the frequency and field strength of the ultrasonic generator increase slowly with the increase of the deviation, and the initial scale inhibition is achieved by low-intensity physical field treatment. When the deviation is between the first preset value and the second preset value, it indicates that the risk of water scaling has increased significantly. The second nonlinear fast response function is adopted to make the basic operating parameters increase rapidly with the increase of the deviation, thereby quickly improving the physical field treatment intensity and dealing with the risk of scaling. When the deviation exceeds the second preset value, it indicates that the risk of water scaling is extremely high. At this time, the amplitude limiting saturation function is used to limit the basic operating parameters of the ultrasonic generator within the preset maximum safety threshold to avoid excessive physical field intensity leading to equipment damage or increased energy consumption.

[0025] 103. Determine the dosing parameters of the chemical reagent dosing device based on the operating parameters and the current temperature of the circulating water; In a specific implementation process, the determined operating parameters of the ultrasonic generator and the current temperature of the circulating water collected by the temperature sensor can be combined to calculate the dosing parameters of the chemical agent dosing device. The chemical agent is a mixture of polycarboxylic acid scale inhibitor and zinc salt corrosion inhibitor in a mass ratio of 1:0.3. The dosing parameters mainly include the total dosing rate of the agent and the dosing ratio of the two agents.

[0026] Specifically, the steps can be implemented as follows: Analyze the operating parameters to determine the field strength effectiveness value corresponding to the operating parameters; Calculate the temperature difference between the current temperature and the standard reference temperature; Based on the positive and negative direction and absolute value of the temperature difference, a preset temperature and activity correction table is consulted to obtain the activity correction factor for the shift in the chemical agent's reaction activity caused by temperature changes; wherein, the activity correction factor is used to compensate for the attenuation of drug efficacy caused by temperature deviation. Based on the field strength effect value, the potential for saving drug dosage due to the synergistic effect of the physical field is evaluated, and a synergistic reduction coefficient positively correlated with the field strength effect value is generated; wherein, the synergistic reduction coefficient is used to reduce the drug dosage accordingly when the physical field effect is enhanced. The baseline dosage is coupled with the activity correction factor and the synergistic reduction coefficient to generate the dosing parameters of the chemical agent dosing device.

[0027] In detail, the established operating parameters of the ultrasonic generator are first analyzed, and the actual effect of the physical field is combined to determine the field strength effectiveness value corresponding to the operating parameters, which characterizes the actual contribution of physical field treatment to scale inhibition and corrosion inhibition.

[0028] The standard reference temperature of the circulating water is preset as the normal operating temperature of the heat exchange system. The temperature difference between the current temperature of the circulating water collected by the temperature sensor and the standard reference temperature is calculated. Depending on whether the temperature difference is an increase or decrease and the specific value of the difference, the system's preset temperature and activity correction table is consulted to obtain the corresponding activity correction factor. If the current temperature is higher than the standard reference temperature, the scale inhibitor is easily degraded, so the activity correction factor is greater than 1 to compensate for the decline in efficacy. If the temperature is lower than the standard reference temperature, the efficacy is stable, so the activity correction factor is close to 1.

[0029] Then, based on the magnitude of the field strength effect efficiency value, the reagent saving potential under the synergistic effect of physical field and chemical agent is evaluated. The higher the field strength effect efficiency value, the greater the contribution of physical field treatment, and the larger the generated synergistic reduction coefficient, which is used to reduce the reagent dosage accordingly.

[0030] Finally, the baseline dosage of the mixed agent is determined, and the baseline dosage is coupled with the activity correction factor and the synergistic reduction coefficient in sequence to obtain the final dosage, dosage rate and other addition parameters.

[0031] In some embodiments, the operating parameters include at least the field strength setting value, the frequency setting value, and the percentage of the action time; The process of analyzing the operating parameters and determining the corresponding field strength effectiveness value may include: Based on the field strength set value and frequency set value, and combined with the current conductivity and dielectric constant of the circulating water, the effective field strength value actually acting on the water body is calculated. The cumulative duration of the physical field generating device within a preset time window is obtained, and a time accumulation factor is obtained based on the ratio of the cumulative duration to the time window. The effective field strength value is input into a preset field strength performance mapping relationship for querying to obtain the corresponding benchmark performance value; wherein the field strength performance mapping relationship records the degree of contribution of the physical field to scale inhibition and corrosion inhibition under different field strength values. The reference effectiveness value is weighted and corrected using the time accumulation factor to obtain the field strength effect effectiveness value.

[0032] In detail, firstly, based on the set values ​​of field strength and frequency, and combined with the real-time collected conductivity and dielectric constant of circulating water by online monitoring equipment, the effective field strength value actually acting on the circulating water body is obtained by calculating the attenuation effect of water quality on the physical field, thus eliminating the influence of water quality characteristics on the physical field.

[0033] A time window is preset, and the system records the cumulative duration of the ultrasonic generator within the time window. The ratio of the cumulative duration to the total duration of the time window is calculated, and this ratio is the time accumulation factor. The longer the cumulative duration, the larger the time accumulation factor, and the stronger the sustained effect of the physical field.

[0034] Meanwhile, a field strength performance mapping relationship is preset in the system. This relationship is calibrated through a large number of experiments and records the physical field scale inhibition and corrosion inhibition benchmark performance values ​​corresponding to different effective field strength values. The calculated effective field strength value is input into this mapping relationship to query the corresponding benchmark performance value.

[0035] Finally, the time accumulation factor and the baseline effectiveness value are weighted and calculated, and the baseline effectiveness value is corrected by the time accumulation factor to obtain the final field strength effect value, which comprehensively characterizes the actual effect of the physical field operating parameters.

[0036] This embodiment quantifies the actual effectiveness of the physical field generating device more scientifically and accurately by introducing the actual effective field strength and time accumulation factor.

[0037] In some embodiments, based on the field strength effect value, the potential for saving drug dosage due to the synergistic effect of physical fields is evaluated, and a synergistic reduction coefficient positively correlated with the field strength effect value is generated, including: The field strength effect value is matched with a plurality of preset effect value intervals to determine the target effect value interval to which it belongs and the reduction coefficient benchmark value of the target effect value interval; wherein, the reduction coefficient benchmark value configured for each effect value interval increases as the effect value interval increases; Calculate the relative position of the field strength effectiveness value within the target effectiveness value range; Based on the relative position, the reduction coefficient benchmark value of the target effectiveness value interval is linearly interpolated within the interval to generate a cooperative reduction coefficient corresponding to the field strength effectiveness value.

[0038] In detail, the possible range of field strength effect effectiveness is first divided into three effectiveness ranges: low-efficiency, medium-efficiency, and high-efficiency, according to the effect from low to high. A first reduction coefficient benchmark value is set for the low-efficiency range to achieve a moderate reduction in the amount of reagent added; a larger second reduction coefficient benchmark value is set for the medium-efficiency range to achieve a significant reduction in the amount of reagent added; and a third reduction coefficient benchmark value is set for the high-efficiency range, which is greater than the second reduction coefficient benchmark value and the growth rate is narrower, reflecting the characteristic that the reagent reduction tends to the limit when the physical field effect is close to saturation.

[0039] The determined field strength effect value is matched with three effect value intervals to determine the target effect value interval to which it belongs, and the corresponding reduction coefficient benchmark value of the interval is retrieved.

[0040] Then, the specific relative position of the field strength effect value within the target effect value range is calculated to characterize the degree of its effect within that range.

[0041] Finally, based on the calculated relative position, linear interpolation is performed within the interval to calculate the benchmark value of the reduction coefficient for the target effectiveness value interval, generating a synergistic reduction coefficient that precisely corresponds to the effectiveness value of the field strength.

[0042] In some embodiments, the process of generating a synergistic reduction coefficient corresponding to the field strength effect value by performing intra-interval linear interpolation on the reduction coefficient reference value of the target effectiveness value interval based on the relative position may include: Determine the lower limit performance value, upper limit performance value, lower limit reduction factor benchmark value, and upper limit reduction factor benchmark value of the target performance value range; Calculate the first difference between the field strength effect value and the lower limit effect value, and calculate the second difference between the upper limit effect value and the lower limit effect value. Use the ratio of the first difference to the second difference as the interpolation weight. Using the interpolation weights, the lower limit reduction coefficient benchmark value and the upper limit reduction coefficient benchmark value are proportionally combined to obtain the collaborative reduction coefficient.

[0043] In detail, after determining the target effectiveness value range to which the field strength effect effectiveness value belongs, the boundary parameters of that range are retrieved, including the lower limit effectiveness value, the upper limit effectiveness value, and the corresponding lower limit reduction coefficient benchmark value and upper limit reduction coefficient benchmark value.

[0044] Taking the target efficiency range as the medium efficiency range as an example, calculate the first difference between the current field strength efficiency value and the lower limit efficiency value of the medium efficiency range, and then calculate the second difference between the upper limit efficiency value and the lower limit efficiency value of the medium efficiency range. Use the ratio of the first difference to the second difference as the interpolation weight. This weight represents the relative proportion of the current field strength efficiency value in the target range.

[0045] Finally, using this interpolation weight, the lower limit reduction coefficient benchmark value and the upper limit reduction coefficient benchmark value are proportionally synthesized and calculated. Combining the weight allocation of the contribution ratio of the two benchmark values ​​to the final collaborative reduction coefficient, a collaborative reduction coefficient that accurately corresponds to the current field strength effect value is obtained.

[0046] In some embodiments, the process of calculating the relative position of the field strength effectiveness value within the target effectiveness value range may include: Based on the lower limit performance value and the upper limit performance value, the performance value range of the upper and lower limit performance intervals is defined; Calculate the positive deviation difference between the field strength effect value and the lower limit effect value; The positive deviation difference is compared with the total length of the performance value range to obtain the relative proportion of the field strength performance value in the direction from the lower performance value to the upper performance value within the upper and lower performance range, so as to characterize the relative position of the field strength performance value within the target performance value range.

[0047] In detail, firstly, based on the lower limit and upper limit of the target performance value range, the performance value span of the range is determined, that is, the difference between the upper limit and lower limit performance values ​​is the total length of the span.

[0048] Then, the positive deviation difference between the current field strength effect value and the lower limit effect value is calculated. This difference is the specific value by which the current effect value exceeds the lower limit effect value.

[0049] Finally, the ratio of the positive deviation difference to the total length of the effectiveness value range is calculated. The resulting relative proportion is the relative position of the field strength effectiveness value within the target effectiveness value range. The closer this proportion is to 1, the closer the current field strength effectiveness value is to the upper limit effectiveness value of the target range, and the stronger the synergistic effect of the physical fields.

[0050] In some embodiments, the process of synthesizing the lower limit reduction coefficient reference value and the upper limit reduction coefficient reference value proportionally using the interpolation weights to obtain the collaborative reduction coefficient may include: The interpolation weights are first associated with the upper limit reduction coefficient benchmark value to obtain the contribution component of the upper limit reduction coefficient benchmark value to the final reduction coefficient. The remaining weight obtained by subtracting the interpolation weight from the unit weight is subjected to a second correlation processing with the lower limit reduction coefficient benchmark value to obtain the contribution component of the lower limit reduction coefficient benchmark value to the final reduction coefficient. The upper limit contribution component and the lower limit contribution component are accumulated and fused together, and the resulting accumulated value is the collaborative reduction coefficient.

[0051] In detail, the calculated interpolation weights are first multiplied by the upper limit reduction coefficient benchmark value of the target performance value range, which is the first association process, to obtain the contribution component of the upper limit reduction coefficient benchmark value to the final collaborative reduction coefficient. The larger the interpolation weight, the higher the proportion of this contribution component.

[0052] The remaining weight is then calculated, which is the value of the unit weight 1 minus the interpolation weight. This remaining weight is then multiplied by the lower limit reduction coefficient benchmark value, which is the second association processing, to obtain the contribution component of the lower limit reduction coefficient benchmark value to the final collaborative reduction coefficient. The larger the remaining weight, the higher the proportion of this contribution component.

[0053] Finally, the upper limit contribution component and the lower limit contribution component are added together, and the two components are accumulated and merged. The accumulated value is the cooperative reduction coefficient that precisely corresponds to the current field strength effect value.

[0054] 104. Control the operation of the physical field generating device according to the operating parameters, and control the operation of the chemical agent dosing device according to the dosing parameters.

[0055] In a specific implementation process, the ultrasonic generator can be started and controlled according to the determined operating parameters, and the chemical agent dosing device can be controlled to synchronously add mixed agents according to the addition parameters, so as to realize the linkage operation of physical field treatment and chemical agent dosing.

[0056] In detail, a 20–40 kHz adjustable ultrasonic generator, which acts as a physical field generating device, can be started and controlled according to the determined operating parameters. First, a start command and initial operating parameter command are sent to the ultrasonic generator to control it to start and run according to the set frequency, field strength, and action time ratio. During operation, the actual operating data of the ultrasonic generator is continuously collected and compared with the determined operating parameters in real time. If frequency deviation or field strength fluctuation occurs, an adjustment command is immediately sent to calibrate the parameters. At the same time, the operating parameters are finely adjusted synchronously according to the real-time changes in water quality characteristic parameters to ensure the stability and adaptability of physical field treatment.

[0057] Simultaneously, a dosing control command is sent to the chemical dosing device. First, the dual-reagent storage module of the chemical dosing device is controlled to mix polycarboxylate scale inhibitor and zinc salt corrosion inhibitor at a mass ratio of 1:0.3. Then, based on the determined dosing parameters such as dosing acceleration rate and single dosing amount, the operating power and start-stop time of the dosing pump are controlled to achieve precise dosing of the mixed agents. During the dosing process, the frequency of the dosing pump is dynamically adjusted in combination with the real-time water temperature of the circulating water and the actual operating power of the ultrasonic generator, thereby adjusting the dosing acceleration rate to ensure that the agent dosing amount matches the intensity of the physical field treatment. The dosing device and the ultrasonic generator maintain synchronous operation. When the physical field treatment starts, the agent dosing starts synchronously. When the physical field parameters are fine-tuned, the agent dosing parameters are adapted synchronously. When the physical field treatment stops, the agent dosing completes the final dosing according to the preset program and stops synchronously. This truly realizes the linkage and coordinated operation of physical field treatment and chemical dosing, ensuring that the effects of the two complement each other and have a synergistic effect.

[0058] The intelligent scale and corrosion inhibition control method for heat exchangers in this embodiment achieves dynamic intelligent regulation based on water quality characteristic parameters. This ensures that the operation of the physical field generating device and the chemical agent dosing device are matched with the actual water quality, effectively avoiding problems such as agent waste, scale inhibitor degradation and corrosion of equipment, and insufficient cleaning. At the same time, through the synergistic effect of the physical field and chemical agents, the overall scale and corrosion inhibition effect of the heat exchanger is improved, adapting to the operational needs of urban centralized heating heat exchange systems, ensuring the heat exchange efficiency of the heat exchange equipment, and reducing the energy consumption of pipeline transportation.

[0059] Based on the same general inventive concept, this invention also protects an intelligent scale and corrosion inhibition control system for heat exchangers. The intelligent scale and corrosion inhibition control system for heat exchangers provided by this invention will be described below. The intelligent scale and corrosion inhibition control system for heat exchangers described below can be referred to in correspondence with the intelligent scale and corrosion inhibition control method for heat exchangers described above.

[0060] Figure 2 This is a schematic diagram of the intelligent scale and corrosion inhibition control system for heat exchangers provided in an embodiment of the present invention, as shown below. Figure 2 As shown, the intelligent scale and corrosion inhibition control system for heat exchangers in this embodiment includes an acquisition module 21, a first determination module 22, a second determination module 23, and a control module 24.

[0061] The acquisition module is used to acquire water quality characteristic parameters of circulating water. The first determining module is used to determine the operating parameters of the physical field generating device based on the degree to which the water quality characteristic parameters exceed the preset trigger threshold when the water quality characteristic parameters exceed the trigger threshold. The second determining module is used to determine the dosing parameters of the chemical agent dosing device based on the operating parameters and the current temperature of the circulating water. The control module is used to control the operation of the physical field generating device according to the operating parameters, and to control the operation of the chemical agent dosing device according to the dosing parameters.

[0062] Figure 3 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present invention. The electronic device may include: a processor 310, a communication interface 320, a memory 330, and a communication bus 340. The processor 310, communication interface 320, and memory 330 communicate with each other via the communication bus 340. The processor 310 can call logical instructions stored in the memory 330 to execute an intelligent scale and corrosion inhibition control method for heat exchangers.

[0063] Furthermore, the logical instructions in the aforementioned memory 330 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, essentially, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0064] It should be noted that all relevant information that may be involved in the various embodiments of the present invention is processed in strict accordance with the requirements of laws and regulations, following the principles of legality, legitimacy, and necessity, based on the reasonable purpose of the business scenario, and is information that users actively provide or generate during the use of the product / service, as well as information obtained with user authorization.

[0065] The information processed by this invention may vary depending on the specific product / service scenario and should be based on the specific scenario in which the user uses the product / service. This may involve user account information, device information, or other related information. This invention will treat the relevant information and its processing with the utmost diligence.

[0066] This invention places great emphasis on the security of relevant information and has adopted reasonable and feasible security protection measures that comply with industry standards to protect user information and prevent unauthorized access, public disclosure, use, modification, damage or loss of relevant information.

[0067] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0068] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for intelligent scale and corrosion inhibition control in heat exchangers, characterized in that, include: Obtain water quality characteristic parameters of circulating water; When the water quality characteristic parameter exceeds a preset trigger threshold, the operating parameters of the physical field generator are determined according to the degree to which the water quality characteristic parameter exceeds the trigger threshold. Based on the operating parameters and the current temperature of the circulating water, determine the dosing parameters of the chemical dosing device; The operation of the physical field generating device is controlled according to the operating parameters, and the operation of the chemical agent dosing device is controlled according to the dosing parameters.

2. The intelligent scale and corrosion inhibition control method for heat exchangers according to claim 1, characterized in that, Based on the degree to which the water quality characteristic parameters exceed the trigger threshold, the operating parameters of the physical field generating device are determined, including: Calculate the deviation between the real-time value of the water quality characteristic parameter and the trigger threshold; The deviation is input into a preset piecewise nonlinear function mapping model. Based on the interval where the deviation is located, different nonlinear mapping rules are applied to generate the basic operating parameters of the physical field generator. The real-time change rate of the water quality characteristic parameters is obtained, and a correction coefficient is generated based on the real-time change rate. The basic operating parameters are corrected using the correction coefficient, and the corrected parameters are used as the operating parameters of the physical field generating device.

3. The intelligent scale and corrosion inhibition control method for heat exchangers according to claim 2, characterized in that, The piecewise nonlinear function mapping model includes: When the deviation is less than the first preset value, a first nonlinear growth function is used to make the basic operating parameters increase slowly as the deviation increases; When the deviation is between the first preset value and the second preset value, a second nonlinear fast response function is used to accelerate the growth of the basic operating parameters as the deviation increases. When the deviation exceeds the second preset value, a limiting saturation function is used to restrict the basic operating parameters within the preset maximum safety threshold.

4. The intelligent scale and corrosion inhibition control method for heat exchangers according to claim 1, characterized in that, Based on the operating parameters and the current temperature of the circulating water, determine the dosing parameters of the chemical dosing device, including: Analyze the operating parameters to determine the field strength effectiveness value corresponding to the operating parameters; Calculate the temperature difference between the current temperature and the standard reference temperature; Based on the positive and negative direction and absolute value of the temperature difference, a preset temperature and activity correction table is consulted to obtain the activity correction factor for the shift in the chemical agent's reaction activity caused by temperature changes; wherein, the activity correction factor is used to compensate for the attenuation of drug efficacy caused by temperature deviation. Based on the field strength effect value, the potential for saving drug dosage due to the synergistic effect of the physical field is evaluated, and a synergistic reduction coefficient positively correlated with the field strength effect value is generated; wherein, the synergistic reduction coefficient is used to reduce the drug dosage accordingly when the physical field effect is enhanced. The baseline dosage is coupled with the activity correction factor and the synergistic reduction coefficient to generate the dosing parameters of the chemical agent dosing device.

5. The intelligent scale and corrosion inhibition control method for heat exchangers according to claim 4, characterized in that, The operating parameters include at least the field strength setting value, the frequency setting value, and the percentage of the action time; Analyzing the operating parameters to determine the corresponding field strength effectiveness value includes: Based on the field strength set value and frequency set value, and combined with the current conductivity and dielectric constant of the circulating water, the effective field strength value actually acting on the water body is calculated. The cumulative duration of the physical field generating device within a preset time window is obtained, and a time accumulation factor is obtained based on the ratio of the cumulative duration to the time window. The effective field strength value is input into a preset field strength performance mapping relationship for querying to obtain the corresponding benchmark performance value; wherein the field strength performance mapping relationship records the degree of contribution of the physical field to scale inhibition and corrosion inhibition under different field strength values. The reference effectiveness value is weighted and corrected using the time accumulation factor to obtain the field strength effect effectiveness value.

6. The intelligent scale and corrosion inhibition control method for heat exchangers according to claim 5, characterized in that, Based on the field strength effect value, the potential for saving drug dosage due to the synergistic effect of physical fields is evaluated, and a synergistic reduction coefficient positively correlated with the field strength effect value is generated, including: The field strength effect value is matched with a plurality of preset effect value intervals to determine the target effect value interval to which it belongs and the reduction coefficient benchmark value of the target effect value interval; wherein, the reduction coefficient benchmark value configured for each effect value interval increases as the effect value interval increases; Calculate the relative position of the field strength effectiveness value within the target effectiveness value range; Based on the relative position, the reduction coefficient benchmark value of the target effectiveness value interval is linearly interpolated within the interval to generate a synergistic reduction coefficient corresponding to the field strength effectiveness value.

7. The intelligent scale and corrosion inhibition control method for heat exchangers according to claim 6, characterized in that, Based on the relative position, linear interpolation is performed within the interval of the reduction coefficient benchmark value of the target effectiveness value interval to generate a cooperative reduction coefficient corresponding to the field strength effectiveness value, including: Determine the lower limit performance value, upper limit performance value, lower limit reduction factor benchmark value, and upper limit reduction factor benchmark value of the target performance value range; Calculate the first difference between the field strength effect value and the lower limit effect value, and calculate the second difference between the upper limit effect value and the lower limit effect value. Use the ratio of the first difference to the second difference as the interpolation weight. Using the interpolation weights, the lower limit reduction coefficient benchmark value and the upper limit reduction coefficient benchmark value are proportionally combined to obtain the collaborative reduction coefficient.

8. The intelligent scale and corrosion inhibition control method for heat exchangers according to claim 7, characterized in that, Calculating the relative position of the field strength effectiveness value within the target effectiveness value range includes: Based on the lower limit performance value and the upper limit performance value, the performance value range of the upper and lower limit performance intervals is defined; Calculate the positive deviation difference between the field strength effect value and the lower limit effect value; The positive deviation difference is compared with the total length of the performance value range to obtain the relative proportion of the field strength performance value in the direction from the lower performance value to the upper performance value within the upper and lower performance range, so as to characterize the relative position of the field strength performance value within the target performance value range.

9. The intelligent scale and corrosion inhibition control method for heat exchangers according to claim 7, characterized in that, Using the interpolation weights, the lower limit reduction coefficient benchmark value and the upper limit reduction coefficient benchmark value are proportionally synthesized to obtain the collaborative reduction coefficient, including: The interpolation weights are first associated with the upper limit reduction coefficient benchmark value to obtain the contribution component of the upper limit reduction coefficient benchmark value to the final reduction coefficient. The remaining weight obtained by subtracting the interpolation weight from the unit weight is subjected to a second correlation processing with the lower limit reduction coefficient benchmark value to obtain the contribution component of the lower limit reduction coefficient benchmark value to the final reduction coefficient. The upper limit contribution component and the lower limit contribution component are accumulated and fused together, and the resulting accumulated value is the collaborative reduction coefficient.

10. A smart scale and corrosion inhibition control system for heat exchangers, characterized in that, include: The acquisition module is used to acquire water quality characteristic parameters of circulating water; The first determining module is used to determine the operating parameters of the physical field generating device based on the degree to which the water quality characteristic parameters exceed the preset trigger threshold when the water quality characteristic parameters exceed the trigger threshold. The second determining module is used to determine the dosing parameters of the chemical agent dosing device based on the operating parameters and the current temperature of the circulating water. The control module is used to control the operation of the physical field generating device according to the operating parameters, and to control the operation of the chemical agent dosing device according to the dosing parameters.

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