Energy-saving combustion control system and method for boiler

Abstract

The present invention relates to the technical field of thermal power generation. Disclosed is an energy-saving combustion control system for a boiler, said system comprising: a data acquisition module, which measures parameters to be controlled inside a boiler during combustion; a strategy generation module, which selects an initial opening degree of an air volume regulating valve on the basis of said parameters and a preset strategy formulation rule; a strategy optimization module, which optimizes the initial opening degree of the air volume regulating valve on the basis of said parameters, so as to obtain an optimized opening degree of the air volume regulating valve; and a strategy correction module, which determines, on the basis of said parameters, whether the optimized opening degree of the air volume regulating valve needs to be corrected. In the present invention, the initial opening degree of the air volume regulating valve is quickly determined on the basis of the content of CO in the boiler, then the opening degree of the air volume regulating valve is optimized on the basis of flue gas, and finally correction is performed on the basis of CO in the boiler, such that oxygen required for boiler combustion is precisely provided, and the combustion efficiency of fuel is improved, thus effectively reducing fuel consumption.

Description

A boiler energy-saving combustion control system and method Technical Field

[0001] This invention relates to the field of thermal power generation technology, and more specifically, to a boiler energy-saving combustion control system and method. Background Technology

[0002] Coal has long held a significant position in the global energy mix. According to the International Energy Agency (IEA), coal has consistently accounted for over 25% of global primary energy consumption for decades. In China, coal's position is even more prominent, consistently accounting for over 50% of primary energy consumption. This energy structure dictates the crucial role of coal-fired power plants in electricity supply, and boiler combustion technology is key to the efficient utilization of coal in these plants. To meet ever-increasing electricity demand, coal-fired power plants need to continuously improve their power generation efficiency, and advanced boiler combustion technology is one of the core components in achieving this improvement.

[0003] However, in the process of implementing the inventive technical solution in the embodiments of this application, the inventors of this application discovered that the above-mentioned technology has at least the following technical problems:

[0004] During the combustion process, the air volume of the boiler cannot be adjusted in a timely and dynamic manner according to the fuel status, resulting in incomplete combustion of fuel, low boiler combustion efficiency, and a large amount of coal resources being wasted over time. Summary of the Invention

[0005] This invention provides a boiler energy-saving combustion control system and method to solve the technical problem of boiler combustion not being energy-efficient due to excessive waste of coal resources in the prior art.

[0006] To achieve the above objectives, the present invention provides a boiler energy-saving combustion control system, comprising:

[0007] The data acquisition module is used to detect the controllable parameters inside the boiler during the combustion process. The controllable parameters include the CO content in the boiler, the CO content in the flue gas, the CO2 content in the flue gas, and the O2 content in the flue gas.

[0008] The strategy generation module is used to formulate rules based on the parameters to be controlled and the preset strategy to select the initial opening degree of the air volume regulating valve;

[0009] The strategy optimization module is used to optimize the initial opening degree of the air volume regulating valve according to the parameters to be controlled, so as to obtain the optimized opening degree of the air volume regulating valve.

[0010] The strategy correction module is used to determine whether the opening degree of the optimized air volume regulating valve needs to be corrected based on the parameters to be controlled.

[0011] Furthermore, the strategy generation module, used to select the initial opening degree of the air volume regulating valve according to the control parameters and preset strategy, further includes:

[0012] A first threshold, a second threshold, and a third threshold for CO are preset, wherein the first threshold for CO is less than the second threshold for CO, and the second threshold for CO is less than the third threshold for CO.

[0013] The first, second, third, and fourth preset opening and closing degrees of the air volume regulating valve are preset.

[0014] Obtain the current CO content in the boiler;

[0015] If the CO content in the current boiler is less than the first CO threshold, then the first preset opening degree of the air volume regulating valve is selected as the initial opening degree of the air volume regulating valve.

[0016] If the CO content in the current boiler is greater than or equal to the first CO threshold, and the CO content in the current flue gas is less than the second CO threshold, then the second preset opening degree of the air volume regulating valve is selected as the initial opening degree of the air volume regulating valve.

[0017] If the CO content in the current boiler is greater than or equal to the second CO threshold, and the CO content in the current flue gas is less than the third CO threshold, then the third preset opening degree of the air volume regulating valve is selected as the initial opening degree of the air volume regulating valve.

[0018] If the CO content in the current boiler is greater than or equal to the third CO threshold, then the fourth preset opening degree of the air volume regulating valve is selected as the initial opening degree of the air volume regulating valve.

[0019] Furthermore, the strategy optimization module, used to optimize the initial opening degree of the air volume regulating valve based on the parameter to be controlled, further includes:

[0020] Obtain the CO content and CO2 content in the flue gas at multiple time points;

[0021] The CO content and CO2 content in the flue gas at the aforementioned multiple time points are pre-treated.

[0022] The CO content in the flue gas to be controlled is determined based on different preset weights for multiple time points and the CO content in the flue gas at multiple pre-processed time points.

[0023] The CO2 content in the flue gas to be controlled is determined based on different preset weights for multiple time points and the CO2 content in the flue gas at multiple pre-processed time points.

[0024] Furthermore, the strategy optimization module, used to optimize the initial opening degree of the air volume regulating valve based on the parameter to be controlled, further includes:

[0025] Based on the CO content and CO2 content in the flue gas to be controlled, obtain the CO volume fraction and CO2 volume fraction in the flue gas to be controlled, and calculate the air distribution volume:

[0026] ;

[0027] in, To adjust the air volume, This is an empirical coefficient and can be adjusted based on historical data. The volume fraction of CO in the flue gas to be controlled. The volume fraction of CO2 in the flue gas to be controlled. Theoretical air volume;

[0028] Obtain the opening and closing characteristic curve of the air volume regulating valve, and determine the ideal opening and closing degree of the air volume regulating valve based on the opening and closing characteristic curve of the air volume regulating valve and the air distribution.

[0029] Furthermore, the strategy optimization module, used to optimize the initial opening degree of the air volume regulating valve based on the parameter to be controlled, further includes:

[0030] Preset deviation threshold;

[0031] Calculate the optimized deviation between the ideal opening degree of the air volume regulating valve and the initial opening degree of the air volume regulating valve, and optimize the initial opening degree of the air volume regulating valve based on the optimized deviation;

[0032] If the optimization deviation is less than the deviation threshold, then the initial opening degree of the air volume regulating valve is maintained as the optimized opening degree of the air volume regulating valve.

[0033] If the optimized deviation is greater than or equal to the deviation threshold, then the ideal opening degree of the air volume regulating valve is set to the optimized opening degree of the air volume regulating valve.

[0034] Furthermore, the strategy correction module, used to determine whether the optimized airflow regulating valve opening degree needs to be corrected based on the controllable parameter, further includes:

[0035] Obtain the O2 content in the flue gas at multiple time points and calculate the average O2 content in the flue gas across all time points.

[0036] A first O2 threshold and a second O2 threshold are preset, wherein the first O2 threshold is greater than the second O2 threshold;

[0037] If the average O2 content in the flue gas is greater than or equal to the first O2 threshold, it is determined that the opening degree of the optimized air volume regulating valve needs to be corrected first.

[0038] If the average O2 content in the flue gas is less than or equal to the second O2 threshold, it is determined that a second correction is needed to be made to the opening and closing degree of the optimized air volume regulating valve.

[0039] If the average O2 content in the flue gas is greater than the second O2 threshold and the average O2 content in the flue gas is less than the first O2 threshold, then it is determined that no correction is needed to the opening degree of the optimized air volume regulating valve.

[0040] Furthermore, the strategy correction module, used to determine whether the optimized airflow regulating valve opening degree needs to be corrected based on the controllable parameter, further includes:

[0041] When the average O2 content in the flue gas is greater than or equal to the first O2 threshold, the O2 content in the flue gas collected at all times is filtered to remove all O2 content in the flue gas that is less than the first O2 threshold.

[0042] Calculate the difference between the O2 content in each filtered flue gas and the first O2 threshold, and calculate the O2 deviation from the mean.

[0043] The O2 deviation from the mean is the average of the differences between the O2 content in all the filtered flue gas and the first O2 threshold.

[0044] The opening degree of the optimized air volume regulating valve is first corrected based on the O2 deviation from the mean and the preset adjustment ratio.

[0045] Furthermore, the strategy correction module, used to determine whether the optimized airflow regulating valve opening degree needs to be corrected based on the controllable parameter, further includes:

[0046] When the average O2 content in the flue gas is less than or equal to the second O2 threshold, the CO content in the boiler at the multiple time points is obtained.

[0047] Pre-set the CO correction threshold in the boiler;

[0048] The CO content in the boiler at the multiple time points is normalized, and the first CO difference is calculated. The first CO difference is the difference between the CO content in the boiler with the highest CO content and the CO content in the boiler with the lowest CO content after normalization.

[0049] Multiple CO second differences are calculated based on the normalized CO content in the boiler and the first CO difference. The multiple CO second differences are the differences between the normalized CO content in the boiler and the first CO difference.

[0050] Calculate the second correction coefficient based on the first CO difference and the second CO difference:

[0051] ;

[0052] Where n is the second correction coefficient. , The weights are denoted by , which can be adjusted based on historical data; y represents the number of second differences in CO. The second difference for the i-th CO. f is the mean of all second differences in CO, and f is the first difference in CO. The adjustment coefficients can be made based on historical data.

[0053] The optimized airflow regulating valve opening degree is corrected according to the second correction coefficient, and the second corrected airflow regulating valve opening degree is equal to n times the optimized airflow regulating valve opening degree.

[0054] Furthermore, the boiler energy-saving combustion control system also includes a monitoring module:

[0055] The monitoring module is used to generate a boiler combustion operation image based on the parameters to be controlled, and to determine whether to issue a boiler operation alarm based on the parameters to be controlled.

[0056] To achieve the above objectives, the present invention also provides a boiler energy-saving combustion control method, comprising:

[0057] The parameters to be controlled inside the boiler during the combustion process are detected, including the CO content in the boiler, the CO content in the flue gas, the CO2 content in the flue gas, and the O2 content in the flue gas.

[0058] The initial opening degree of the air volume regulating valve is selected according to the control parameters and preset strategy.

[0059] The initial opening degree of the air volume regulating valve is optimized according to the parameters to be controlled, and the optimized opening degree of the air volume regulating valve is obtained.

[0060] Based on the parameters to be controlled, determine whether the opening degree of the optimized air volume regulating valve needs to be corrected.

[0061] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0062] This invention discloses a boiler energy-saving combustion control system and method. The system rapidly determines the initial opening degree of the airflow regulating valve based on the CO content in the boiler, avoiding untimely adjustments caused by excessive subsequent adjustments. Then, it optimizes the initial opening degree of the airflow regulating valve based on the CO and CO2 content in the flue gas to prevent unreasonable selection. Finally, it corrects the opening degree of the airflow regulating valve again based on the O2 content in the flue gas and the CO content in the boiler. This not only ensures sufficient oxygen for fuel combustion in the boiler but also avoids heat loss due to excessive air distribution, thereby achieving efficient fuel utilization, reducing energy waste, and enabling the boiler to operate more energy-efficiently. Attached Figure Description

[0063] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0064] Figure 1 shows a schematic diagram of a boiler energy-saving combustion control system according to an embodiment of the present invention;

[0065] Figure 2 shows a schematic flowchart of a boiler energy-saving combustion control method according to an embodiment of the present invention. Embodiments of the present invention

[0066] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0067] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0068] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0069] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0070] The following is a description of preferred embodiments of the present invention in conjunction with the accompanying drawings.

[0071] As shown in Figure 1, an embodiment of the present invention discloses a boiler energy-saving combustion control system, comprising:

[0072] The data acquisition module is used to detect the controllable parameters inside the boiler during the combustion process. The controllable parameters include the CO content in the boiler, the CO content in the flue gas, the CO2 content in the flue gas, and the O2 content in the flue gas.

[0073] The strategy generation module is used to formulate rules based on the parameters to be controlled and preset strategies to select the initial opening degree of the air volume regulating valve;

[0074] The strategy optimization module is used to optimize the initial opening degree of the air volume regulating valve based on the parameters to be controlled, and obtain the optimized opening degree of the air volume regulating valve.

[0075] The strategy correction module is used to determine whether the opening and closing degree of the optimized air volume regulating valve needs to be corrected based on the parameters to be controlled.

[0076] In this embodiment, the amount of air distributed in the boiler is controlled according to the opening degree of the air volume regulating valve, so as to provide the required oxygen for fuel combustion in the boiler.

[0077] In some embodiments of this application, the strategy generation module, used to formulate rules based on the parameters to be controlled and a preset strategy to select the initial opening degree of the air volume regulating valve, further includes:

[0078] Pre-set a first threshold, a second threshold, and a third threshold for CO. The first threshold is less than the second threshold, and the second threshold is less than the third threshold.

[0079] The first, second, third, and fourth preset opening and closing degrees of the air volume regulating valve are preset.

[0080] Obtain the current CO content in the boiler;

[0081] If the CO content in the current boiler is less than the first CO threshold, then the first preset opening degree of the air volume regulating valve is selected as the initial opening degree of the air volume regulating valve.

[0082] If the CO content in the current boiler is greater than or equal to the first CO threshold, and the CO content in the current flue gas is less than the second CO threshold, then the second preset opening degree of the air volume regulating valve is selected as the initial opening degree of the air volume regulating valve.

[0083] If the CO content in the current boiler is greater than or equal to the second CO threshold, and the CO content in the current flue gas is less than the third CO threshold, then the third preset opening degree of the air volume regulating valve is selected as the initial opening degree of the air volume regulating valve.

[0084] If the CO content in the current boiler is greater than or equal to the third CO threshold, then the fourth preset opening degree of the air volume regulating valve is selected as the initial opening degree of the air volume regulating valve.

[0085] In this embodiment, the first preset opening degree, the second preset opening degree, the third preset opening degree and the fourth preset opening degree of the air volume regulating valve increase sequentially.

[0086] The beneficial effect of the above technical solution is that it can quickly select the initial opening degree of the air volume regulating valve according to the CO content in the boiler, so as to achieve rapid replenishment of oxygen in the boiler.

[0087] In some embodiments of this application, the strategy optimization module, used to optimize the initial opening degree of the air volume regulating valve according to the parameters to be controlled, further includes:

[0088] Obtain the CO content and CO2 content in the flue gas at multiple time points;

[0089] Pretreatment was performed on the CO and CO2 content in the flue gas at multiple time points;

[0090] The CO content in the flue gas to be controlled is determined based on different preset weights for multiple time points and the CO content in the flue gas at multiple pre-processed time points.

[0091] The CO2 content in the flue gas to be controlled is determined based on different preset weights for multiple time points and the CO2 content in the flue gas at multiple pre-processed time points.

[0092] In this embodiment, the strategy optimization module is used to optimize the initial opening degree of the air volume regulating valve according to the parameters to be controlled, and further includes:

[0093] Based on the CO content and CO2 content in the flue gas to be controlled, obtain the CO volume fraction and CO2 volume fraction in the flue gas to be controlled, and calculate the air distribution volume:

[0094] ;

[0095] in, To adjust the air volume, This is an empirical coefficient and can be adjusted based on historical data. The volume fraction of CO in the flue gas to be controlled. The volume fraction of CO2 in the flue gas to be controlled. Theoretical air volume;

[0096] Obtain the opening and closing characteristic curve of the air volume regulating valve, and determine the ideal opening and closing degree of the air volume regulating valve based on the opening and closing characteristic curve and the air volume distribution.

[0097] In this embodiment, the theoretical air volume can be calculated from data such as fuel analysis. The air volume regulating valve opening and closing characteristic curve, i.e. the relationship between the opening and closing degree of the air volume regulating valve and the air volume, can be obtained from historical data or by consulting the technical information provided by the air volume regulating valve manufacturer.

[0098] In this embodiment, the strategy optimization module is used to optimize the initial opening degree of the air volume regulating valve according to the parameters to be controlled, and further includes:

[0099] Preset deviation threshold;

[0100] Calculate the optimal deviation between the ideal opening degree and the initial opening degree of the air volume regulating valve, and optimize the initial opening degree of the air volume regulating valve based on the optimal deviation.

[0101] If the optimization deviation is less than the deviation threshold, the initial opening degree of the air volume regulating valve is maintained as the optimized opening degree of the air volume regulating valve.

[0102] If the optimization deviation is greater than or equal to the deviation threshold, then the ideal opening degree of the air volume regulating valve is set to the optimized opening degree of the air volume regulating valve.

[0103] In this embodiment, the optimized deviation is the absolute value of the difference between the ideal opening degree of the air volume regulating valve and the initial opening degree of the air volume regulating valve.

[0104] The beneficial effects of the above technical solution are: optimizing the opening and closing degree of the air volume regulating valve based on multiple data in the flue gas generated by combustion, ensuring that the fuel in the boiler can be fully combusted.

[0105] In some embodiments of this application, the strategy correction module, used to determine whether the optimized airflow regulating valve opening degree needs to be corrected based on the parameter to be controlled, further includes:

[0106] Obtain the O2 content in the flue gas at multiple time points and calculate the average O2 content in the flue gas across all time points.

[0107] A first O2 threshold and a second O2 threshold are preset, wherein the first O2 threshold is greater than the second O2 threshold;

[0108] If the average O2 content in the flue gas is greater than or equal to the first O2 threshold, it is determined that the opening degree of the optimized air volume regulating valve needs to be corrected first.

[0109] If the average O2 content in the flue gas is less than or equal to the second O2 threshold, it is determined that a second correction is needed to the opening and closing degree of the optimized air volume regulating valve.

[0110] If the average O2 content in the flue gas is greater than the second O2 threshold and less than the first O2 threshold, then it is determined that no correction is needed to the opening and closing degree of the optimized air volume regulating valve.

[0111] In this embodiment, the strategy correction module is used to determine whether the optimized airflow regulating valve opening degree needs to be corrected based on the parameters to be controlled, and further includes:

[0112] When the average O2 content in the flue gas is greater than or equal to the first O2 threshold, the O2 content in the flue gas collected at all times is filtered to remove all O2 content in the flue gas that is less than the first O2 threshold.

[0113] Calculate the difference between the O2 content in each filtered flue gas and the first O2 threshold, and calculate the O2 deviation from the mean.

[0114] The O2 deviation from the mean is the average of the differences between the O2 content in all filtered flue gas and the first O2 threshold.

[0115] The opening and closing degree of the optimized air volume regulating valve is first corrected based on the O2 deviation from the mean and the preset adjustment ratio.

[0116] In this embodiment, an O2 deviation from the mean - preset adjustment ratio mapping table is preset. Each O2 deviation from the mean has a unique preset adjustment ratio coefficient in the O2 deviation from the mean - preset adjustment ratio mapping table. If the preset adjustment ratio coefficient corresponding to the current O2 deviation from the mean in the O2 deviation from the mean - preset adjustment ratio mapping table is a, then the opening degree of the first corrected air volume regulating valve is equal to a times the optimized opening degree of the air volume regulating valve.

[0117] In this embodiment, the strategy correction module is used to determine whether the optimized airflow regulating valve opening degree needs to be corrected based on the parameters to be controlled, and further includes:

[0118] When the average O2 content in the flue gas is less than or equal to the second O2 threshold, the CO content in the boiler is obtained at multiple time points.

[0119] Pre-set the CO correction threshold in the boiler;

[0120] The CO content in the boiler at multiple time points is normalized, and the first difference of CO is calculated. The first difference of CO is the difference between the maximum and minimum CO content in the boiler after normalization.

[0121] Multiple CO second differences are calculated based on the CO content in the boiler after normalization and the first CO difference. The multiple CO second differences are the differences between the CO content in each boiler after normalization and the first CO difference.

[0122] Calculate the second correction factor based on the first difference in CO and the second difference in CO:

[0123] ;

[0124] Where n is the second correction coefficient. , The weights are denoted by , which can be adjusted based on historical data; y represents the number of second differences in CO. The second difference for the i-th CO. f is the mean of all second differences in CO, and f is the first difference in CO. The adjustment coefficients can be made based on historical data.

[0125] The optimized airflow regulating valve opening degree is corrected a second time based on the second correction coefficient. The corrected airflow regulating valve opening degree is equal to n times the optimized airflow regulating valve opening degree.

[0126] In this embodiment, the same time is used to obtain the CO content in the boiler at multiple times, that is, to obtain the O2 content in the flue gas at multiple times.

[0127] The beneficial effects of the above technical solution are: the opening and closing degree of the air volume regulating valve is corrected according to the O2 content in the flue gas, ensuring sufficient oxygen while avoiding excessive air volume from taking away the heat in the boiler, improving the fuel combustion efficiency inside the boiler, and preventing resource waste caused by incomplete fuel combustion.

[0128] In some embodiments of this application, the boiler energy-saving combustion control system further includes a monitoring module:

[0129] The monitoring module is used to generate boiler combustion operation images based on the parameters to be controlled, and to determine whether to issue a boiler operation alarm based on the parameters to be controlled.

[0130] In this embodiment, if the CO content in the boiler is too high, an alarm for insufficient oxygen in the boiler combustion will be issued; if the CO content in the flue gas is too high, an alarm for excessive CO in the flue gas will be issued; if the O2 content in the flue gas is too high, an alarm for excessive air distribution will be issued.

[0131] The beneficial effect of the above technical solution is that the monitoring module allows operators to understand the boiler combustion status in a timely manner.

[0132] To further illustrate the technical concept of this invention, the technical solution of this invention will now be described in conjunction with specific application scenarios.

[0133] Correspondingly, as shown in Figure 2, this application also provides a boiler energy-saving combustion control method, including:

[0134] S110. Detect the parameters to be controlled inside the boiler during the combustion process. The parameters to be controlled include the CO content in the boiler, the CO content in the flue gas, the CO2 content in the flue gas, and the O2 content in the flue gas.

[0135] S120. Select the initial opening degree of the air volume regulating valve according to the control parameters and preset strategies;

[0136] S130. Optimize the initial opening degree of the air volume regulating valve according to the parameters to be controlled to obtain the optimized opening degree of the air volume regulating valve.

[0137] S140. Determine whether the opening and closing degree of the optimized air volume regulating valve needs to be corrected based on the parameters to be controlled.

[0138] In the description of the above embodiments, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0139] Although the invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The fact that not all of these combinations are described in this specification is merely for the sake of brevity and resource conservation.

[0140] It will be understood by those skilled in the art that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A boiler energy-saving combustion control system, characterized in that, include: The data acquisition module is used to detect the controllable parameters inside the boiler during the combustion process. The controllable parameters include the CO content in the boiler, the CO content in the flue gas, the CO2 content in the flue gas, and the O2 content in the flue gas. The strategy generation module is used to formulate rules based on the parameters to be controlled and the preset strategy to select the initial opening degree of the air volume regulating valve; The strategy optimization module is used to optimize the initial opening degree of the air volume regulating valve according to the parameters to be controlled, so as to obtain the optimized opening degree of the air volume regulating valve. The strategy correction module is used to determine whether the opening degree of the optimized air volume regulating valve needs to be corrected based on the parameters to be controlled.

2. The boiler energy-saving combustion control system according to claim 1, characterized in that, The strategy generation module is used to select the initial opening degree of the air volume regulating valve according to the control parameters and preset strategy, and further includes: A first threshold, a second threshold, and a third threshold for CO are preset, wherein the first threshold for CO is less than the second threshold for CO, and the second threshold for CO is less than the third threshold for CO. The first, second, third, and fourth preset opening and closing degrees of the air volume regulating valve are preset. Obtain the current CO content in the boiler; If the CO content in the current boiler is less than the first CO threshold, then the first preset opening degree of the air volume regulating valve is selected as the initial opening degree of the air volume regulating valve. If the CO content in the current boiler is greater than or equal to the first CO threshold, and the CO content in the current flue gas is less than the second CO threshold, then the second preset opening degree of the air volume regulating valve is selected as the initial opening degree of the air volume regulating valve. If the CO content in the current boiler is greater than or equal to the second CO threshold, and the CO content in the current flue gas is less than the third CO threshold, then the third preset opening degree of the air volume regulating valve is selected as the initial opening degree of the air volume regulating valve. If the CO content in the current boiler is greater than or equal to the third CO threshold, then the fourth preset opening degree of the air volume regulating valve is selected as the initial opening degree of the air volume regulating valve.

3. The boiler energy-saving combustion control system according to claim 1, characterized in that, The strategy optimization module is used to optimize the initial opening degree of the air volume regulating valve according to the parameter to be controlled, and further includes: Obtain the CO content and CO2 content in the flue gas at multiple time points; The CO content and CO2 content in the flue gas at the aforementioned multiple time points are pre-treated. The CO content in the flue gas to be controlled is determined based on different preset weights for multiple time points and the CO content in the flue gas at multiple pre-processed time points. The CO2 content in the flue gas to be controlled is determined based on different preset weights for multiple time points and the CO2 content in the flue gas at multiple pre-processed time points.

4. The boiler energy-saving combustion control system according to claim 3, characterized in that, The strategy optimization module is used to optimize the initial opening degree of the air volume regulating valve according to the parameter to be controlled, and further includes: Based on the CO content and CO2 content in the flue gas to be controlled, obtain the CO volume fraction and CO2 volume fraction in the flue gas to be controlled, and calculate the air distribution volume: ; in, To adjust the air volume, This is an empirical coefficient and can be adjusted based on historical data. The volume fraction of CO in the flue gas to be controlled. The volume fraction of CO2 in the flue gas to be controlled. Theoretical air volume; Obtain the opening and closing characteristic curve of the air volume regulating valve, and determine the ideal opening and closing degree of the air volume regulating valve based on the opening and closing characteristic curve of the air volume regulating valve and the air distribution.

5. A boiler energy-saving combustion control system according to claim 4, characterized in that, The strategy optimization module is used to optimize the initial opening degree of the air volume regulating valve according to the parameter to be controlled, and further includes: Preset deviation threshold; Calculate the optimized deviation between the ideal opening degree of the air volume regulating valve and the initial opening degree of the air volume regulating valve, and optimize the initial opening degree of the air volume regulating valve based on the optimized deviation; If the optimization deviation is less than the deviation threshold, then the initial opening degree of the air volume regulating valve is maintained as the optimized opening degree of the air volume regulating valve. If the optimized deviation is greater than or equal to the deviation threshold, then the ideal opening degree of the air volume regulating valve is set to the optimized opening degree of the air volume regulating valve.

6. The boiler energy-saving combustion control system according to claim 1, characterized in that, The strategy correction module is used to determine whether the optimized airflow regulating valve opening degree needs to be corrected based on the controllable parameter, and further includes: Obtain the O2 content in the flue gas at multiple time points and calculate the average O2 content in the flue gas across all time points. A first O2 threshold and a second O2 threshold are preset, wherein the first O2 threshold is greater than the second O2 threshold; If the average O2 content in the flue gas is greater than or equal to the first O2 threshold, it is determined that the opening degree of the optimized air volume regulating valve needs to be corrected first. If the average O2 content in the flue gas is less than or equal to the second O2 threshold, it is determined that a second correction is needed to be made to the opening and closing degree of the optimized air volume regulating valve. If the average O2 content in the flue gas is greater than the second O2 threshold and the average O2 content in the flue gas is less than the first O2 threshold, then it is determined that there is no need to correct the opening degree of the optimized air volume regulating valve.

7. A boiler energy-saving combustion control system according to claim 6, characterized in that, The strategy correction module is used to determine whether the optimized airflow regulating valve opening degree needs to be corrected based on the controllable parameter, and further includes: When the average O2 content in the flue gas is greater than or equal to the first O2 threshold, the O2 content in the flue gas collected at all times is filtered to remove all O2 content in the flue gas that is less than the first O2 threshold. Calculate the difference between the O2 content in each filtered flue gas and the first O2 threshold, and calculate the O2 deviation from the mean. The O2 deviation from the mean is the average of the differences between the O2 content in all the filtered flue gas and the first O2 threshold. The opening and closing degree of the optimized air volume regulating valve is first corrected based on the O2 deviation from the mean and the preset adjustment ratio.

8. A boiler energy-saving combustion control system according to claim 7, characterized in that, The strategy correction module is used to determine whether the optimized airflow regulating valve opening degree needs to be corrected based on the controllable parameter, and further includes: When the average O2 content in the flue gas is less than or equal to the second O2 threshold, the CO content in the boiler at the multiple time points is obtained. Pre-set the CO correction threshold in the boiler; The CO content in the boiler at the multiple time points is normalized, and the first CO difference is calculated. The first CO difference is the difference between the CO content in the boiler with the highest CO content and the CO content in the boiler with the lowest CO content after normalization. Multiple CO second differences are calculated based on the normalized CO content in the boiler and the first CO difference. The multiple CO second differences are the differences between the normalized CO content in the boiler and the first CO difference. Calculate the second correction coefficient based on the first CO difference and the second CO difference: ； Where n is the second correction coefficient. 、 The weight is denoted as , which can be adjusted based on historical data; y represents the number of second differences in CO. The second difference for the i-th CO. f is the mean of all second differences in CO, and f is the first difference in CO. The adjustment coefficients can be adjusted based on historical data; The optimized airflow regulating valve opening degree is corrected a second time according to the second correction coefficient. The second corrected airflow regulating valve opening degree is equal to n times the optimized airflow regulating valve opening degree.

9. A boiler energy-saving combustion control system according to claim 1, characterized in that, The boiler energy-saving combustion control system also includes a monitoring module: The monitoring module is used to generate a boiler combustion operation image based on the parameters to be controlled, and to determine whether to issue a boiler operation alarm based on the parameters to be controlled.

10. A boiler energy-saving combustion control method, characterized in that, include: The parameters to be controlled inside the boiler during the combustion process are detected, including the CO content in the boiler, the CO content in the flue gas, the CO2 content in the flue gas, and the O2 content in the flue gas. The initial opening degree of the air volume regulating valve is selected according to the control parameters and preset strategy. The initial opening degree of the air volume regulating valve is optimized according to the parameters to be controlled, and the optimized opening degree of the air volume regulating valve is obtained. Based on the parameters to be controlled, determine whether the opening degree of the optimized air volume regulating valve needs to be corrected.

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