Multi-medium multi-metal corrosion analysis method and device for indirect cooling circulating water system

Abstract

The invention provides a multi-medium and multi-metal corrosion analysis method and device for an SCAL type intercooling circulating water system, and relates to the field of electrical equipment maintaining.The method comprises the steps that the dissolved oxygen amount, the electric conductivity and the pH value obtained from the intercooling circulating water system are subjected to standardization treatment; inputting the standardized dissolved oxygen content, the electric conductivity and the pH value into a pre-constructed multi-element corrosion velocity analysis model to obtain corrosion velocity predicted values of the aluminum, the carbon steel and the stainless steel; and performing multi-medium and multi-metal corrosion analysis according to the predicted values of the corrosion rates of the aluminum, the carbon steel and the stainless steel. According to the method, the influence characteristics of multiple factors can be determined according to the corrosion behavior of the multi-metal system of the indirect cooling system in the key water quality parameter change process.

Description

Technical Field

[0001] The present application relates to the field of power equipment maintenance, and specifically to a multi-media and multi-metal corrosion analysis method and device for a SCAL type intercooling circulating water system. Background Art

[0002] At present, there are few technical studies on water quality control, operating condition control and corrosion assessment for SCAL type indirect air-cooled circulating water, and there are no relevant water quality control standards or specifications. In the industry, it is necessary to promote the development of SCAL indirect air-cooling technology, mitigate its corrosion problems and realize online monitoring and assessment of corrosion. This is of great significance to ensure the safe and stable operation of many thermal power units of this type.

[0003] This section is intended to provide a background or context to the embodiments of the invention recited in the claims. No admission is made that the description herein is prior art by inclusion in this section. Summary of the invention

[0004] In response to the problems in the prior art, the present application provides a SCAL-type indirect cooling circulating water system multi-media multi-metal corrosion analysis method and device, which can determine the influencing characteristics of multiple factors according to the corrosion behavior of the multi-metal system of the indirect cooling system during the change process of key water quality parameters.

[0005] In order to solve the above technical problems, this application provides the following technical solutions:

[0006] In a first aspect, the present application provides a multi-media and multi-metal corrosion analysis method for a SCAL type intercooling circulating water system, comprising:

[0007] Standardize the dissolved oxygen, conductivity and pH values ​​obtained from the indirect cooling water system;

[0008] The standardized dissolved oxygen content, conductivity and pH values ​​were input into the pre-built multivariate corrosion rate analysis model to obtain the corrosion rate prediction values ​​of aluminum, carbon steel and stainless steel;

[0009] Multi-media and multi-metal corrosion analysis is performed based on the predicted corrosion rates of aluminum, carbon steel and stainless steel.

[0010] Furthermore, the standardization of the dissolved oxygen content, conductivity and pH value obtained from the indirect cooling circulating water system includes:

[0011] The standardized variables corresponding to the dissolved oxygen content, conductivity, and pH value are calculated based on the obtained dissolved oxygen content, conductivity, pH value, the corresponding independent variable means, and the independent variable standard deviations.

[0012] Furthermore, the multivariate corrosion rate analysis model includes: an aluminum corrosion rate model, a carbon steel corrosion rate model and a stainless steel corrosion rate model; the step of pre-constructing the multivariate corrosion rate analysis model includes:

[0013] An aluminum corrosion rate model is constructed based on the first adjustment coefficient combination, the dissolved oxygen content, the conductivity and the pH value after the standardized treatment;

[0014] A carbon steel corrosion rate model is constructed based on the second adjustment coefficient combination, the dissolved oxygen content, the conductivity and the pH value after the standardized treatment;

[0015] A stainless steel corrosion rate model was constructed based on the third adjustment coefficient combination, the dissolved oxygen content, the conductivity and the pH value after standardization.

[0016] Furthermore, the multi-medium and multi-metal corrosion analysis is performed according to the corrosion rates of the aluminum, carbon steel and stainless steel, including:

[0017] Calculating the corrosion residuals of aluminum, carbon steel and stainless steel according to the predicted corrosion rates of aluminum, carbon steel and stainless steel and the obtained measured values;

[0018] Multi-media and multi-metal corrosion analysis is performed based on the corrosion residuals.

[0019] In a second aspect, the present application provides a SCAL type intercooling circulating water system multi-media multi-metal corrosion analysis device comprising:

[0020] Standard processing unit, used to standardize the dissolved oxygen content, conductivity and pH value obtained from the indirect cooling circulating water system;

[0021] The corrosion prediction unit is used to input the standardized dissolved oxygen content, conductivity and pH value into the pre-built multivariate corrosion rate analysis model to obtain the corrosion rate prediction values ​​of aluminum, carbon steel and stainless steel;

[0022] The corrosion analysis unit is used to perform multi-media and multi-metal corrosion analysis based on the corrosion rate prediction values ​​of the aluminum, carbon steel and stainless steel.

[0023] Furthermore, the standard processing unit is used to calculate the standardized variables corresponding to the dissolved oxygen content, conductivity, and pH value according to the acquired dissolved oxygen content, conductivity, pH value, the corresponding independent variable means, and the independent variable standard deviations.

[0024] Furthermore, the corrosion prediction unit comprises:

[0025] An aluminum model building module is used to build an aluminum corrosion rate model according to a first adjustment coefficient combination, a standardized dissolved oxygen content, a conductivity, and a pH value;

[0026] A carbon steel model building module is used to build a carbon steel corrosion rate model according to the second adjustment coefficient combination, the dissolved oxygen content, the conductivity and the pH value after the standardized treatment;

[0027] The stainless steel model building module is used to build a stainless steel corrosion rate model based on the third adjustment coefficient combination, the dissolved oxygen content, the conductivity and the pH value after standardization.

[0028] Furthermore, the corrosion analysis unit comprises:

[0029] A corrosion residual calculation module, used to calculate the corrosion residuals of aluminum, carbon steel and stainless steel according to the predicted corrosion rates of aluminum, carbon steel and stainless steel and the obtained measured values;

[0030] The corrosion analysis verification module is used to perform multi-medium and multi-metal corrosion analysis based on the corrosion residuals.

[0031] In a third aspect, the present application provides an electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the steps of the SCAL-type intercooling circulating water system multi-media and multi-metal corrosion analysis method are implemented.

[0032] In a fourth aspect, the present application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the multi-media and multi-metal corrosion analysis method for a SCAL-type intercooling circulating water system.

[0033] In a fifth aspect, the present application provides a computer program product, including a computer program / instruction, which, when executed by a processor, implements the steps of the SCAL-type intercooling circulating water system multi-media and multi-metal corrosion analysis method.

[0034] In response to the problems in the prior art, the SCAL type intercooling circulating water system multi-media multi-metal corrosion analysis method and device provided in this application can clarify the influencing characteristics and protection measures of multiple factors according to the corrosion behavior of the multi-metal system of the intercooling system during the change process of key water quality parameters. Specifically, according to the corrosion characteristics of the multi-metal and multi-water quality factors of the intercooling system, the corresponding relationship of the mutual influence of the multi-metal corrosion process is clarified, the dominant factors and main control conditions of the system corrosion are determined, and the optimal control parameters and ranges are determined for the on-site working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0036] Figure 1 This is a flow chart of the multi-media and multi-metal corrosion analysis method for a SCAL type intercooling circulating water system in an embodiment of the present application;

[0037] Figure 2 A flowchart of constructing a multivariate corrosion rate analysis model in an embodiment of the present application;

[0038] Figure 3 This is a flow chart of performing multi-media and multi-metal corrosion analysis in an embodiment of the present application;

[0039] Figure 4 This is a structural diagram of a SCAL type indirect cooling circulating water system multi-media multi-metal corrosion analysis device in an embodiment of the present application;

[0040] Figure 5 This is a structural diagram of a corrosion prediction unit in an embodiment of the present application;

[0041] Figure 6 This is a structural diagram of a corrosion analysis unit in an embodiment of the present application;

[0042] Figure 7 It is a schematic diagram of the structure of an electronic device in an embodiment of the present application. DETAILED DESCRIPTION

[0043] To make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings. Here, the exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but are not intended to limit the present invention.

[0044] The information collected in the technical solution of this application is information and data authorized by the user or fully authorized by all parties, and the collection, storage, use, processing, transmission, provision, disclosure and application of relevant data comply with the relevant laws, regulations and standards of relevant countries and regions, take necessary confidentiality measures, do not violate public order and good morals, and provide corresponding operation entrances for users to choose to authorize or refuse.

[0045] Provide users with corresponding operation entrances for them to choose to agree or reject the automated decision-making results; if the user chooses to reject, the expert decision-making process will be entered.

[0046] In one embodiment, see Figure 1In order to determine the influencing characteristics of multiple factors according to the corrosion behavior of the multi-metal system of the indirect cooling system during the change process of key water quality parameters, the present application provides a multi-medium multi-metal corrosion analysis method for a SCAL type indirect cooling circulating water system, including:

[0047] S101: Standardize the dissolved oxygen, conductivity and pH value obtained from the indirect cooling circulating water system;

[0048] S102: inputting the standardized dissolved oxygen content, conductivity and pH value into a pre-built multivariate corrosion rate analysis model to obtain corrosion rate prediction values ​​of aluminum, carbon steel and stainless steel;

[0049] S103: Perform multi-media and multi-metal corrosion analysis based on the predicted corrosion rates of aluminum, carbon steel and stainless steel.

[0050] It is understandable that the present invention provides a SCAL type intercooling circulating water multi-media corrosion analysis method, which can solve the problem that the cause of corrosion in the SCAL type intercooling circulating water system cannot be accurately located, and provides important technical support for the metal corrosion and protection of the SCAL type intercooling circulating water system, and ensures the safe and efficient operation of the SCAL type intercooling circulating water system. It adopts a multivariate analysis model, for carbon steel, stainless steel, pure aluminum and other metal materials in the intercooling system, for the presence of pH (acidity), dissolved oxygen (DO), and conductivity (DS) in the intercooling water, a SCAL type intercooling circulating water multi-media corrosion analysis method is provided, and experimental tests are performed. The experimental results show that the method provided by the present application can be used to analyze the influence of multi-media factors on the metal corrosion of the intercooling system.

[0051] Specifically, corrosion tests under different working conditions were carried out on the dynamic simulation device of the indirect cooling system, namely test condition 1 (pH 6.11, dissolved oxygen 1.43 mg / L, conductivity 0.98 μS / cm, temperature 45°C), test condition 2 (pH 7.45, dissolved oxygen 0.97 mg / L, conductivity 7.78 μS / cm, temperature 45°C), test condition 3 (pH 8.49, dissolved oxygen 0.74 mg / L, conductivity 30.13 μS / cm, temperature 45°C), test condition 4 (pH 6.19, dissolved oxygen 5.18 mg / L, conductivity 0.30 μS / cm, temperature 45°C), test condition 5 (pH 5.74, dissolved oxygen 0.14 mg / L, conductivity 0.30 μS / cm, temperature 45°C), test condition 6 (pH 6.08, dissolved oxygen 1.30 mg / L, conductivity 1.32 μS / cm, temperature 60°C), the metal specimens are made of carbon steel, stainless steel, and aluminum. The corrosion rates of the metals are shown in Tables 1, 2, and 3.

[0052] Table 1 shows the corrosion rate of carbon steel samples under different test conditions. The pH values ​​and conductivity values ​​of Test 1 and Test 4 in Table 1 are similar, and the dissolved oxygen concentration values ​​are 1.43 mg / L and 5.18 mg / L, respectively. Comparing the corrosion rate values ​​of carbon steel samples in Test 1 and Test 4, it can be seen that the corrosion rate of carbon steel is faster in water with high dissolved oxygen concentration.

[0053] Table 2 shows the corrosion rate of aluminum samples under different test conditions. The pH values ​​and conductivity values ​​of Test 1 and Test 4 in Table 2 are similar, and the dissolved oxygen concentration values ​​are 1.43 mg / L and 5.18 mg / L, respectively. Comparing the corrosion rate values ​​of aluminum in Test 1 and Test 4, it can be seen that the corrosion rate of aluminum is lower in water with high dissolved oxygen concentration. This may be because aluminum is easily passivated, and the passivation film on the aluminum surface has better corrosion resistance under higher dissolved oxygen concentrations.

[0054] Table 3 shows the corrosion rate of stainless steel samples under different test conditions. The pH values ​​and conductivity values ​​of Test 1 and Test 4 in Table 3 are similar, and the dissolved oxygen concentration values ​​are 1.43 mg / L and 5.18 mg / L, respectively. Comparing the corrosion rate values ​​of stainless steel in Test 1 and Test 4, it can be seen that the corrosion rate of stainless steel is lower in water with a high dissolved oxygen concentration. Similar to the situation of aluminum samples, this may be because stainless steel is also easy to passivate, and the passive film on the stainless steel surface has better corrosion resistance under higher dissolved oxygen concentrations.

[0055] Among them, pH, dissolved oxygen, conductivity, and temperature are all data monitored in real time by online measuring instruments; the corrosion rate is measured using the classic weight loss method, corrosion rate = (thickness of the test piece before the experiment - thickness of the test piece after the experiment) / time.

[0056] Table 1 Corrosion rate of carbon steel samples

[0057]

[0058] Table 2 Corrosion rate of aluminum samples

[0059]

[0060] Table 3 Corrosion rate of stainless steel samples

[0061]

[0062]

[0063] Tables 1, 2 and 3 show the corrosion rates of carbon steel, pure aluminum and stainless steel samples under 6 test conditions. From the data shown in Tables 1, 2 and 3, it can be seen that the changes in the corrosion rates of carbon steel, aluminum and stainless steel are related to the changes in various water quality factors. In order to analyze the impact of changes in various water quality factors on the metal corrosion of the indirect cooling water system, the multivariate regression analysis method was used to analyze the data. 3+ The temperature of experiment No. 6 was different from that of other rounds of experiments, so only the data of experiments No. 1 to No. 4 were used for analysis. At the same time, since the redox potential is a function of dissolved oxygen concentration and pH and is not an independent variable, the redox potential is not included in the independent variables in the regression analysis. The independent variables in the multiple regression model only include dissolved oxygen DO, conductivity DS and pH value.

[0064] It can be seen that the embodiment of the present application can obtain the dissolved oxygen content, conductivity and pH value from the indirect cooling circulating water system. Subsequently, metal corrosion analysis is performed based on the obtained dissolved oxygen content, conductivity and pH value.

[0065] From the above description, it can be seen that the multi-media multi-metal corrosion analysis method of the SCAL type intercooling circulating water system provided by this application can clarify the influencing characteristics and protection measures of multiple factors according to the corrosion behavior of the multi-metal system of the intercooling system during the change process of key water quality parameters. Specifically, according to the corrosion characteristics of the multi-metal and multi-water quality factors of the intercooling system, the corresponding relationship of the mutual influence of the multi-metal corrosion process is clarified, the dominant factors and main control conditions of the system corrosion are determined, and the optimal control parameters and ranges are determined for the on-site working conditions.

[0066] In one embodiment, the standardization of the dissolved oxygen content, conductivity and pH value obtained from the indirect cooling circulating water system includes:

[0067] The standardized variables corresponding to the dissolved oxygen content, conductivity, and pH value are calculated based on the obtained dissolved oxygen content, conductivity, pH value, the corresponding independent variable means, and the independent variable standard deviations.

[0068] It can be understood that in order to eliminate the difference between the units and scales of the independent variables and facilitate comparison of the contribution of DO, DS and pH values ​​to the corrosion rate, the embodiment of the present application performs independent variable standardization according to the method shown in formula (4).

[0069]

[0070] Where, X std is the standardized independent variable, X is the original independent variable, X meanis the average value of the original independent variable X, and STD is the standard deviation of the original independent variable X. In the process of standardizing the dissolved oxygen content, conductivity and pH value, the independent variables referred to by X are the original dissolved oxygen content independent variable, the original conductivity independent variable and the original pH value independent variable. mean They are the average values ​​of dissolved oxygen, electrical conductivity and pH value respectively.

[0071] From the above description, it can be seen that the SCAL type indirect cooling circulating water system multi-media multi-metal corrosion analysis method provided in the present application can standardize the dissolved oxygen content, conductivity and pH value obtained from the indirect cooling circulating water system.

[0072] In one embodiment, see Figure 2 The multivariate corrosion rate analysis model includes: an aluminum corrosion rate model, a carbon steel corrosion rate model and a stainless steel corrosion rate model; the steps of pre-constructing the multivariate corrosion rate analysis model include:

[0073] S201: constructing an aluminum corrosion rate model according to the first adjustment coefficient combination, the dissolved oxygen content, the conductivity and the pH value after the standardized treatment;

[0074] S202: constructing a carbon steel corrosion rate model according to the second adjustment coefficient combination, the dissolved oxygen content, the conductivity and the pH value after the standardized treatment;

[0075] S203: Constructing a stainless steel corrosion rate model according to the third adjustment coefficient combination, the dissolved oxygen content, the conductivity and the pH value after the standardized treatment.

[0076] It can be understood that the multivariate corrosion rate analysis model includes:

[0077] (1) Aluminum

[0078] The corrosion rate of aluminum is the smallest in water near neutrality, and the relationship between the corrosion rate of aluminum and pH value has the characteristics of a quadratic function. Therefore, an aluminum corrosion rate model shown in formula (1) is established.

[0079] V Al =a+b·pH 2 +c·DO+d·DS (1)

[0080] In the formula, a, b, c, d are constants;

[0081] pH (acidity), DO (dissolved oxygen), DS (conductivity).

[0082] (2) Carbon steel

[0083] The carbon steel corrosion rate model is shown in formula (2).

[0084] V Fe=e+f·pH+g·DO+h·DS (2)

[0085] Wherein, e, f, g, and h are constants.

[0086] pH (acidity), DO (dissolved oxygen), DS (conductivity).

[0087] (3) Stainless steel

[0088] The stainless steel corrosion rate model is shown in formula (3).

[0089] V SS =i+j·pH+k·DO+m·DS (3)

[0090] Where i, j, k, and m are constants.

[0091] pH (acidity), DO (dissolved oxygen), DS (conductivity).

[0092] From the above description, it can be seen that the multi-media and multi-metal corrosion analysis method of the SCAL type intercooling circulating water system provided in the present application can pre-construct a multivariate corrosion rate analysis model.

[0093] In one embodiment, see Figure 3 The multi-medium and multi-metal corrosion analysis is performed based on the corrosion rates of the aluminum, carbon steel and stainless steel, including:

[0094] S301: Calculating the corrosion residuals of aluminum, carbon steel and stainless steel according to the predicted corrosion rates of aluminum, carbon steel and stainless steel and the obtained measured values;

[0095] S302: Perform multi-medium and multi-metal corrosion analysis based on the corrosion residuals.

[0096] It can be understood that the results of the multiple regression analysis are shown in Table 4. Tables 5, 6 and 7 show the measured values, predicted values, residuals and standard residuals of the corrosion rate models of carbon steel, aluminum and stainless steel, respectively. It can be seen that the predicted values ​​of each regression model are in good agreement with the measured values, and the residuals are very small, indicating that the model fits well.

[0097] The calculation formula for the residual and standard residual of the regression model is:

[0098] Regression model: Y = A + BX

[0099] By performing regression analysis on n groups of experimental data (Xmi, Ymi) (i=1, ..., n), the regression equation Y=A+BX is obtained.

[0100] Then substitute Xmi into the regression equation to obtain the calculated value Yci of Y calculated according to the regression equation at each Xmi value.

[0101] Residual: The residual is the difference between the model calculated value Yc and the experimental value Ym

[0102] Sri=Yci-Ymi

[0103] The standard deviation of the residuals S e :

[0104]

[0105] Standardized residual SSri: Standardized residual, referred to as standardized residual, is the ratio of the residual to the residual standard deviation.

[0106] SSri=Sri / S e .

[0107] The size of the standardized regression coefficient in the regression model can represent the contribution and importance of the independent variable.

[0108] In the regression model of aluminum corrosion rate, the absolute value of the regression coefficient d before conductivity DS is the largest; the absolute value of the regression coefficient b before pH is smaller than the regression coefficient d before conductivity DS, and larger than the regression coefficient c before dissolved oxygen. This result shows that conductivity DS has the greatest impact on aluminum corrosion rate, followed by pH value, and dissolved oxygen DO has the least impact, that is, conductivity DS>pH value>dissolved oxygen DO. Compared with pH value and DS, dissolved oxygen DO has less impact on aluminum corrosion rate.

[0109] In the regression model of carbon steel corrosion rate, the absolute value of the regression coefficient f before pH is the largest; the absolute value of the regression coefficient h before conductivity DS is smaller than the regression coefficient f before pH value, and larger than the regression coefficient g before dissolved oxygen DO. This result shows that pH value has the greatest impact on the corrosion rate of carbon steel, followed by conductivity DS, and dissolved oxygen DO has the least impact, that is, conductivity pH>DS>dissolved oxygen DO. Compared with pH and DS, dissolved oxygen DO has less impact on the corrosion rate of carbon steel.

[0110] Table 4 Standardized regression coefficients

[0111]

[0112] Table 5 Residuals of the regression model of aluminum corrosion rate (Equation (1))

[0113] Measured value Model prediction value Residual Standardized residual 0.1134 0.1134 0 0 0.0821 0.0821 9.71E-17 0.993266 0.7554 0.7554 -1.1E-16 -1.13516 0.0461 0.0461 8.33E-17 0.851371

[0114] Table 6 Residuals of the regression model for carbon steel corrosion rate (Equation (2))

[0115] Measured value Model prediction value Residual Standardized residual 0.6338 0.6338 -1.1E-16 -0.96077 0.3098 0.3098 1.11E-16 0.960769 0.3184 0.3184 -5.6E-17 -0.48038 0.6679 0.6679 -1.1E-16 -0.96077

[0116] Table 7 Residuals of the stainless steel corrosion rate regression model (Equation (3))

[0117] Measured value Model prediction value Residual Standardized residual 0.0509 0.0509 0 0 0.0357 0.0357 0 0 0.0429 0.0429 -6.9E-18 -1.73205 0.0286 0.0286 0 0

[0118] In the regression model of stainless steel corrosion rate, due to the low corrosion rate of stainless steel, the regression coefficients before DO, DS and pH values ​​are very small, indicating that under the experimental conditions, the three water quality parameters have little effect on stainless steel. Among them, the regression coefficient j before pH value is the largest, indicating that pH value has the greatest impact on the corrosion rate of stainless steel. The absolute value of the regression coefficient m before DS is second to j, indicating that the effect of DS on the corrosion rate of stainless steel is less than that of pH value. The regression coefficient k before DO is the smallest, and its effect on the corrosion rate of stainless steel is the smallest.

[0119] The present invention provides a method for analyzing the coupled influence of multiple corrosive media on SCAL intercooling circulating water. The multivariate analysis model is adopted to solve the problem of analyzing the corrosion influence of multiple metal materials such as carbon steel, aluminum and stainless steel in the intercooling system in the multi-media factors of pH, dissolved oxygen (DO) and conductivity (DS). Experimental verification is carried out, and the results show that the predicted value of the regression model of the method proposed by the present invention is in good agreement with the measured value, and the residual is very small, indicating that the model has a good fit.

[0120] Based on the same inventive concept, the embodiments of the present application also provide a SCAL-type multi-media multi-metal corrosion analysis device for an intercooled circulating water system, which can be used to implement the method described in the above embodiments, as described in the following embodiments. Since the principle of solving the problem by the SCAL-type multi-media multi-metal corrosion analysis device for an intercooled circulating water system is similar to the SCAL-type multi-media multi-metal corrosion analysis method for an intercooled circulating water system, the implementation of the SCAL-type multi-media multi-metal corrosion analysis device for an intercooled circulating water system can refer to the implementation of the method based on software performance benchmark determination, and the repetitions will not be repeated. As used below, the term "unit" or "module" can be a combination of software and / or hardware that implements a predetermined function. Although the system described in the following embodiments is preferably implemented in software, the implementation of hardware, or a combination of software and hardware, is also possible and conceived.

[0121] In one embodiment, see Figure 4 In order to determine the influencing characteristics of multiple factors according to the corrosion behavior of the multi-metal system of the indirect cooling system during the change process of key water quality parameters, the present application provides a SCAL type indirect cooling circulating water system multi-media multi-metal corrosion analysis device, including: a standard processing unit 501, a corrosion prediction unit 502 and a corrosion analysis unit 503.

[0122] The standard processing unit 501 is used to perform standardization processing on the dissolved oxygen content, conductivity and pH value obtained from the indirect cooling circulating water system;

[0123] The corrosion prediction unit 502 is used to input the standardized dissolved oxygen content, conductivity and pH value into a pre-built multivariate corrosion rate analysis model to obtain corrosion rate prediction values ​​of aluminum, carbon steel and stainless steel;

[0124] The corrosion analysis unit 503 is used to perform multi-media and multi-metal corrosion analysis based on the corrosion rate prediction values ​​of the aluminum, carbon steel and stainless steel.

[0125] In one embodiment, the standard processing unit is used to calculate the standardized variables corresponding to the dissolved oxygen content, conductivity, and pH value according to the obtained dissolved oxygen content, conductivity, pH value, the corresponding independent variable means, and the independent variable standard deviations.

[0126] In one embodiment, see Figure 5 The corrosion prediction unit 502 includes: an aluminum model building module 601, a carbon steel model building module 602 and a stainless steel model building module 603.

[0127] Aluminum model building module 601, used to build an aluminum corrosion rate model according to the first adjustment coefficient combination, the dissolved oxygen content, the conductivity and the pH value after the standardized processing;

[0128] A carbon steel model building module 602 is used to build a carbon steel corrosion rate model according to the second adjustment coefficient combination, the dissolved oxygen content, the conductivity and the pH value after the standardized processing;

[0129] The stainless steel model building module 603 is used to build a stainless steel corrosion rate model according to the third adjustment coefficient combination, the dissolved oxygen content, the conductivity and the pH value after the standardization process.

[0130] In one embodiment, see Figure 6 , the corrosion analysis unit 503 comprises:

[0131] A corrosion residual calculation module 701 is used to calculate the corrosion residuals of aluminum, carbon steel and stainless steel according to the predicted corrosion rates of aluminum, carbon steel and stainless steel and the obtained measured values;

[0132] The corrosion analysis verification module 702 is used to perform multi-medium and multi-metal corrosion analysis based on the corrosion residuals.

[0133] From the hardware level, in order to determine the influencing characteristics of multiple factors according to the corrosion behavior of the multi-metal system of the indirect cooling system during the change process of key water quality parameters, the present application provides an embodiment of an electronic device for implementing all or part of the contents of the multi-medium multi-metal corrosion analysis method of the SCAL type indirect cooling circulating water system, and the electronic device specifically includes the following contents:

[0134] Processor, memory, communication interface and bus; wherein the processor, memory and communication interface communicate with each other through the bus; the communication interface is used to realize information transmission between the SCAL type intercooling circulating water system multi-media multi-metal corrosion analysis device and related equipment such as core business system, user terminal and related database; the logic controller can be a desktop computer, tablet computer and mobile terminal, etc., but the present embodiment is not limited thereto. In the present embodiment, the logic controller can be implemented with reference to the embodiment of the SCAL type intercooling circulating water system multi-media multi-metal corrosion analysis method and the embodiment of the SCAL type intercooling circulating water system multi-media multi-metal corrosion analysis device in the embodiment, and the contents thereof are incorporated herein, and the repeated parts are not repeated.

[0135] It is understandable that the user terminal may include a smart phone, a tablet electronic device, a network set-top box, a portable computer, a desktop computer, a personal digital assistant (PDA), a vehicle-mounted device, a smart wearable device, etc. Among them, the smart wearable device may include smart glasses, a smart watch, a smart bracelet, etc.

[0136] In practical applications, part of the SCAL type intercooling circulating water system multi-media multi-metal corrosion analysis method can be performed on the electronic device side as described above, or all operations can be completed in the client device. Specifically, it can be selected according to the processing capacity of the client device and the limitations of the user's usage scenario. This application does not limit this. If all operations are completed in the client device, the client device may also include a processor.

[0137] The client device may have a communication module (i.e., a communication unit) that can communicate with a remote server to achieve data transmission with the server. The server may include a server on the task scheduling center side, and other implementation scenarios may also include a server on an intermediate platform, such as a server on a third-party server platform that has a communication link with the task scheduling center server. The server may include a single computer device, or a server cluster consisting of multiple servers, or a server structure of a distributed device.

[0138] Figure 7 FIG. 9 is a schematic block diagram of the system structure of the electronic device 9600 according to an embodiment of the present application. Figure 7 As shown, the electronic device 9600 may include a central processor 9100 and a memory 9140; the memory 9140 is coupled to the central processor 9100. It is worth noting that Figure 7is exemplary; other types of structures may also be used to supplement or replace this structure to implement telecommunication functions or other functions.

[0139] In one embodiment, the SCAL type intercooling circulating water system multi-media multi-metal corrosion analysis method function can be integrated into the central processor 9100. The central processor 9100 can be configured to perform the following control:

[0140] S101: Standardize the dissolved oxygen, conductivity and pH value obtained from the indirect cooling circulating water system;

[0141] S102: inputting the standardized dissolved oxygen content, conductivity and pH value into a pre-built multivariate corrosion rate analysis model to obtain corrosion rate prediction values ​​of aluminum, carbon steel and stainless steel;

[0142] S103: Perform multi-media and multi-metal corrosion analysis based on the predicted corrosion rates of aluminum, carbon steel and stainless steel.

[0143] From the above description, it can be seen that the multi-media multi-metal corrosion analysis method and device for the SCAL type intercooling circulating water system provided by the present application can clarify the influencing characteristics and protection measures of multiple factors according to the corrosion behavior of the multi-metal system of the intercooling system during the change process of key water quality parameters. Specifically, according to the corrosion characteristics of the multi-metal and multi-water quality factors of the intercooling system, the corresponding relationship of the mutual influence of the multi-metal corrosion process is clarified, the dominant factors and main control conditions of the system corrosion are determined, and the optimal control parameters and ranges are determined for the on-site working conditions.

[0144] In another embodiment, the SCAL-type multi-media multi-metal corrosion analysis device for an indirect cooling circulating water system can be configured separately from the central processing unit 9100. For example, the data composite transmission device SCAL-type multi-media multi-metal corrosion analysis device for an indirect cooling circulating water system can be configured as a chip connected to the central processing unit 9100, and the function of the SCAL-type multi-media multi-metal corrosion analysis method for an indirect cooling circulating water system can be realized through the control of the central processing unit.

[0145] like Figure 7 As shown, the electronic device 9600 may also include: a communication module 9110, an input unit 9120, an audio processor 9130, a display 9160, and a power supply 9170. It is worth noting that the electronic device 9600 does not necessarily have to include Figure 7 In addition, the electronic device 9600 may also include Figure 7 For components not shown, reference may be made to the prior art.

[0146] like Figure 7As shown, the central processing unit 9100 is sometimes also referred to as a controller or an operation control, and may include a microprocessor or other processor device and / or logic device. The central processing unit 9100 receives input and controls the operation of various components of the electronic device 9600.

[0147] The memory 9140 may be, for example, one or more of a cache, a flash memory, a hard drive, a removable medium, a volatile memory, a non-volatile memory or other suitable devices. The above-mentioned information related to the failure may be stored, and a program for executing the relevant information may also be stored. The CPU 9100 may execute the program stored in the memory 9140 to implement information storage or processing, etc.

[0148] The input unit 9120 provides input to the central processing unit 9100. The input unit 9120 is, for example, a key or a touch input device. The power supply 9170 is used to provide power to the electronic device 9600. The display 9160 is used to display display objects such as images and texts. The display may be, for example, an LCD display, but is not limited thereto.

[0149] The memory 9140 may be a solid-state memory, such as a read-only memory (ROM), a random access memory (RAM), a SIM card, etc. It may also be a memory that saves information even when the power is off, can be selectively erased, and is provided with more data, examples of which are sometimes referred to as EPROMs, etc. The memory 9140 may also be some other type of device. The memory 9140 includes a buffer memory 9141 (sometimes referred to as a buffer). The memory 9140 may include an application / function storage unit 9142, which is used to store application programs and function programs or processes for executing the operation of the electronic device 9600 through the central processor 9100.

[0150] The memory 9140 may also include a data storage unit 9143 for storing data, such as contacts, digital data, pictures, sounds, and / or any other data used by the electronic device. The driver storage unit 9144 of the memory 9140 may include various drivers for communication functions of the electronic device and / or for executing other functions of the electronic device (such as messaging applications, address book applications, etc.).

[0151] The communication module 9110 is a transmitter / receiver 9110 that sends and receives signals via an antenna 9111. The communication module (transmitter / receiver) 9110 is coupled to the central processor 9100 to provide input signals and receive output signals, which may be the same as the case of a conventional mobile communication terminal.

[0152] Based on different communication technologies, multiple communication modules 9110 may be provided in the same electronic device, such as a cellular network module, a Bluetooth module and / or a wireless LAN module. The communication module (transmitter / receiver) 9110 is also coupled to a speaker 9131 and a microphone 9132 via an audio processor 9130 to provide an audio output via the speaker 9131 and receive an audio input from the microphone 9132, thereby realizing a common telecommunication function. The audio processor 9130 may include any suitable buffer, decoder, amplifier, etc. In addition, the audio processor 9130 is also coupled to the central processor 9100, so that recording can be performed on the local machine through the microphone 9132, and the sound stored on the local machine can be played through the speaker 9131.

[0153] The embodiments of the present application also provide a computer-readable storage medium capable of implementing all the steps of the SCAL-type intercooling circulating water system multi-media multi-metal corrosion analysis method in the above-mentioned embodiments, wherein the execution subject is a server or a client. The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, all the steps of the SCAL-type intercooling circulating water system multi-media multi-metal corrosion analysis method in the above-mentioned embodiments are implemented. For example, when the processor executes the computer program, the following steps are implemented:

[0154] S101: Standardize the dissolved oxygen, conductivity and pH value obtained from the indirect cooling circulating water system;

[0155] S102: inputting the standardized dissolved oxygen content, conductivity and pH value into a pre-built multivariate corrosion rate analysis model to obtain corrosion rate prediction values ​​of aluminum, carbon steel and stainless steel;

[0156] S103: Perform multi-media and multi-metal corrosion analysis based on the predicted corrosion rates of aluminum, carbon steel and stainless steel.

[0157] From the above description, it can be seen that the multi-media multi-metal corrosion analysis method and device for the SCAL type intercooling circulating water system provided by the present application can clarify the influencing characteristics and protection measures of multiple factors according to the corrosion behavior of the multi-metal system of the intercooling system during the change process of key water quality parameters. Specifically, according to the corrosion characteristics of the multi-metal and multi-water quality factors of the intercooling system, the corresponding relationship of the mutual influence of the multi-metal corrosion process is clarified, the dominant factors and main control conditions of the system corrosion are determined, and the optimal control parameters and ranges are determined for the on-site working conditions.

[0158] It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as methods, devices, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0159] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (apparatus), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0160] These computer program instructions may also be stored in a computer readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0161] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0162] The present invention uses specific embodiments to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A method for analyzing multi-media and multi-metal corrosion in an indirect cooling circulating water system, characterized in that: include: Standardize the dissolved oxygen, conductivity and pH values ​​obtained from the indirect cooling water system; The standardized dissolved oxygen content, conductivity and pH values ​​were input into the pre-built multivariate corrosion rate analysis model to obtain the corrosion rate prediction values ​​of aluminum, carbon steel and stainless steel; Multi-media and multi-metal corrosion analysis is performed based on the predicted corrosion rates of aluminum, carbon steel and stainless steel.

2. According to the method for analyzing multi-media and multi-metal corrosion of indirect cooling circulating water system in claim 1, the dissolved oxygen content, conductivity and pH value obtained from the indirect cooling circulating water system are standardized, characterized in that: include: The standardized variables corresponding to the dissolved oxygen content, conductivity, and pH value are calculated based on the obtained dissolved oxygen content, conductivity, pH value, the corresponding independent variable means, and the independent variable standard deviations.

3. According to the multi-media and multi-metal corrosion analysis method for the indirect cooling circulating water system of claim 1, the multivariate corrosion rate analysis model comprises: Aluminum corrosion rate model, carbon steel corrosion rate model and stainless steel corrosion rate model; The step of pre-building a multivariate corrosion rate analysis model is characterized by comprising: An aluminum corrosion rate model is constructed based on the first adjustment coefficient combination, the dissolved oxygen content, the conductivity and the pH value after the standardized treatment; A carbon steel corrosion rate model is constructed based on the second adjustment coefficient combination, the dissolved oxygen content, the conductivity and the pH value after the standardized treatment; A stainless steel corrosion rate model was constructed based on the third adjustment coefficient combination, the dissolved oxygen content, the conductivity and the pH value after standardization.

4. The method for analyzing multi-media and multi-metal corrosion of an indirect cooling circulating water system according to claim 3, wherein the multi-media and multi-metal corrosion analysis is performed based on the corrosion rates of the aluminum, carbon steel and stainless steel, and is characterized in that: include: Calculating the corrosion residuals of aluminum, carbon steel and stainless steel according to the predicted corrosion rates of aluminum, carbon steel and stainless steel and the obtained measured values; Multi-media and multi-metal corrosion analysis is performed based on the corrosion residuals.

5. A multi-media and multi-metal corrosion analysis device for an indirect cooling circulating water system, characterized in that: include: Standard processing unit, used to standardize the dissolved oxygen content, conductivity and pH value obtained from the indirect cooling circulating water system; The corrosion prediction unit is used to input the standardized dissolved oxygen content, conductivity and pH value into the pre-built multivariate corrosion rate analysis model to obtain the corrosion rate prediction values ​​of aluminum, carbon steel and stainless steel; The corrosion analysis unit is used to perform multi-media and multi-metal corrosion analysis based on the corrosion rate prediction values ​​of the aluminum, carbon steel and stainless steel.

6. The multi-media and multi-metal corrosion analysis device for the indirect cooling circulating water system according to claim 5 is characterized in that: The standard processing unit is specifically used to calculate the standardized variables corresponding to the dissolved oxygen content, conductivity, and pH value according to the acquired dissolved oxygen content, conductivity, pH value, the corresponding independent variable means, and the independent variable standard deviations.

7. The multi-media and multi-metal corrosion analysis device for the indirect cooling circulating water system according to claim 5 is characterized in that: The corrosion prediction unit comprises: An aluminum model building module is used to build an aluminum corrosion rate model according to a first adjustment coefficient combination, a standardized dissolved oxygen content, a conductivity, and a pH value; A carbon steel model building module is used to build a carbon steel corrosion rate model according to the second adjustment coefficient combination, the dissolved oxygen content, the conductivity and the pH value after the standardized treatment; The stainless steel model building module is used to build a stainless steel corrosion rate model based on the third adjustment coefficient combination, the dissolved oxygen content, the conductivity and the pH value after standardization.

8. The multi-media and multi-metal corrosion analysis device for the indirect cooling circulating water system according to claim 7 is characterized in that: The corrosion analysis unit comprises: A corrosion residual calculation module, used to calculate the corrosion residuals of aluminum, carbon steel and stainless steel according to the predicted corrosion rates of aluminum, carbon steel and stainless steel and the obtained measured values; The corrosion analysis verification module is used to perform multi-medium and multi-metal corrosion analysis based on the corrosion residuals.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the program, the steps of the multi-media and multi-metal corrosion analysis method for the intercooling circulating water system according to any one of claims 1 to 4 are implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the multi-media and multi-metal corrosion analysis method for an indirect cooling circulating water system according to any one of claims 1 to 4 are implemented.

11. A computer program product comprising a computer program / instructions, characterized in that When the computer program / instructions are executed by a processor, the steps of the multi-media and multi-metal corrosion analysis method for an indirect cooling circulating water system as described in any one of claims 1 to 4 are implemented.

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