Boiler combination jet flow motion trail regulation and control method and device

Abstract

The invention discloses a method and a device for regulating and controlling the combined jet motion trail of a boiler, and the method comprises the steps: obtaining the historical operation data of the boiler, and determining key influence factors influencing the combined jet motion trail from the historical operation data; a prediction model is constructed based on the key influence factors, and a combined jet flow prediction motion track is obtained through prediction; obtaining a combined jet flow required motion trail, and analyzing the difference degree between the combined jet flow required motion trail and the combined jet flow predicted motion trail; and according to the difference degree, the working conditions of the boiler are set, and the combined jet flow movement track of the boiler is regulated and controlled. According to the method, the prediction model is constructed by analyzing historical data, accurate prediction of the combined jet flow movement track is achieved, the working condition of the boiler is set by analyzing the difference between the prediction track and the required track, the combined jet flow movement track is regulated and controlled in real time, energy utilization can be better optimized, emission can be better reduced, and the energy utilization rate is increased. And the energy consumption cost and the environmental influence are reduced, so that the stability and the reliability of boiler operation are improved.

Description

Technical Field

[0001] The invention relates to the technical field of boiler control, and in particular to a method and a device for controlling a boiler combined jet motion trajectory. Background Art

[0002] Boiler combined jet refers to the process of mixing fuel and air in the form of jets and burning them in the combustion chamber inside the boiler through a reasonably designed nozzle and fuel injection system. This design can effectively achieve full mixing of fuel and air, as well as effective utilization of the heat generated during the combustion process. Boiler combined jets are often used in the combustion systems of industrial boilers or power plants to improve energy efficiency and reduce emissions. By optimizing jet control, boiler combined jets can achieve a more efficient and stable combustion process, which helps to improve energy utilization and reduce production costs.

[0003] However, traditional control methods rely on experience or simplified mathematical models, and the prediction and control accuracy of the jet motion trajectory is not high. Especially in complex environments or when subject to external interference, it is often difficult to achieve precise control. In addition, the jet trajectory is affected by many factors. Traditional methods cannot effectively deal with the complex interactions between multiple factors, resulting in limited control effects. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a method and device for controlling the motion trajectory of a boiler combined jet, comprising:

[0005] Obtain the historical operation data of the boiler, analyze the historical operation data, and determine the key factors affecting the combined jet motion trajectory;

[0006] A combined jet trajectory prediction model is constructed based on key influencing factors, and prediction is performed based on the combined jet trajectory prediction model to obtain the combined jet prediction motion trajectory of the boiler;

[0007] Obtain the required motion trajectory of the combined jet of the boiler, and analyze the difference between the required motion trajectory of the combined jet and the predicted motion trajectory of the combined jet;

[0008] The working conditions of the boiler are set according to the degree of difference, and the combined jet motion trajectory of the boiler is regulated according to the working conditions.

[0009] Furthermore, the historical operation data of the boiler is obtained, and the historical operation data is analyzed to determine the key influencing factors affecting the combined jet motion trajectory, including:

[0010] Obtain historical operation data of the boiler, and group and extract the data from the historical operation data according to parameter types to obtain several groups of parameter data groups;

[0011] Acquire a motion trajectory monitoring data group of the combined jet in the boiler, analyze the correlation between the motion trajectory monitoring data group and the parameter data group, and determine candidate influencing factors affecting the motion trajectory of the combined jet according to the analysis results;

[0012] Draw a combined jet motion trajectory diagram based on the motion trajectory monitoring data group, and determine the time period in which each candidate influencing factor individually affects the combined jet motion trajectory;

[0013] The variation range of the combined jet motion trajectory in each time period is analyzed, and the candidate influencing factors with the top four variation ranges are identified as the key influencing factors affecting the combined jet motion trajectory.

[0014] Furthermore, the analysis of the correlation between the motion trajectory monitoring data set and the parameter data set, and determining the candidate influencing factors affecting the combined jet motion trajectory according to the analysis results, includes:

[0015] Calculate the correlation coefficient between each parameter data group and the motion trajectory monitoring data group;

[0016] The candidate influencing factors whose correlation coefficients exceed the preset values ​​are screened out and determined as the candidate influencing factors affecting the combined jet motion trajectory.

[0017] Furthermore, the analysis of the change amplitude of the combined jet motion trajectory in each time period and determining the candidate influencing factors with the top four change amplitudes as key influencing factors affecting the combined jet motion trajectory include:

[0018] Determine the position information of each time point in each calculation segment, and use the Euclidean distance formula to calculate the position change between adjacent time points in each calculation segment;

[0019] Put all the values ​​of position changes into the corresponding data sets, and then calculate the standard deviation of each data set;

[0020] The standard deviation is taken as the variation amplitude of the combined jet motion trajectory in each time period, and the candidate influencing factors with the top four variation amplitudes are identified as the key influencing factors affecting the combined jet motion trajectory.

[0021] Furthermore, the combined jet trajectory prediction model is constructed based on the key influencing factors, and prediction is performed according to the combined jet trajectory prediction model to obtain the combined jet prediction motion trajectory of the boiler, including:

[0022] Acquire data corresponding to key influencing factors to establish a data set, and build an initial prediction model of the combined jet trajectory of the boiler based on the data set and a preset neural network model;

[0023] The data set is divided into a training set and a test set according to a certain ratio, and the training set and the test set are input into the combined jet trajectory initial prediction model, and the combined jet trajectory initial prediction model is trained and tested until the combined jet trajectory initial prediction model meets the preset convergence conditions, thereby obtaining the combined jet trajectory prediction model of the boiler;

[0024] The combined jet trajectory prediction model is used to predict the combined jet prediction motion trajectory of the boiler.

[0025] Furthermore, the step of obtaining the required motion trajectory of the combined jet of the boiler and analyzing the difference between the required motion trajectory of the combined jet and the predicted motion trajectory of the combined jet includes:

[0026] Obtain the required motion trajectory of the combined jet and the predicted motion trajectory of the combined jet of the boiler, and respectively calculate the Euclidean distance, Frechet distance and Hausdorff distance between the required motion trajectory of the combined jet and the predicted motion trajectory of the combined jet;

[0027] Presetting a standard Euclidean distance, a standard Frechet distance, and a standard Hausdorff distance, and respectively calculating differences between the Euclidean distance, the Frechet distance, and the Hausdorff distance and the corresponding standard Euclidean distance, the standard Frechet distance, and the standard Hausdorff distance to obtain a first difference, a second difference, and a third difference;

[0028] The first difference, the second difference and the third difference are added together to obtain a total difference, and the ratios of the first difference, the second difference and the third difference to the total difference are respectively calculated to obtain a first ratio, a second ratio and a third ratio;

[0029] The first ratio, the second ratio and the third ratio are used as weight coefficients of Euclidean distance, Frechet distance and Hausdorff distance respectively;

[0030] The Euclidean distance, Frechet distance and Hausdorff distance are weightedly added together with the corresponding weight coefficients to obtain the difference between the required motion trajectory of the combined jet and the predicted motion trajectory of the combined jet.

[0031] Furthermore, the boiler working condition is set according to the difference degree, and the combined jet motion trajectory of the boiler is regulated according to the working condition, including:

[0032] A corresponding relationship between working conditions and difference degree intervals is preset. For each difference degree interval of the operation monitoring data, the corresponding relationship between working conditions and difference degree intervals is associated with a corresponding working condition.

[0033] Obtaining the difference degree of the boiler, and determining the working condition corresponding to the boiler based on the mapping relationship between the difference degree interval to which the difference degree belongs and the working condition-difference degree interval correspondence relationship, wherein each working condition is set with a fuel flow rate, an air flow rate, a combustion chamber pressure, and a combustion chamber temperature corresponding to the difference degree;

[0034] The combined jet motion trajectory of the boiler is regulated according to the working conditions.

[0035] The present invention also provides a boiler combined jet motion trajectory control device, comprising:

[0036] A determination module is used to obtain historical operation data of the boiler, analyze the historical operation data, and determine key influencing factors affecting the combined jet motion trajectory;

[0037] A prediction module is used to construct a combined jet trajectory prediction model based on key influencing factors, and to make predictions based on the combined jet trajectory prediction model to obtain a predicted combined jet motion trajectory of the boiler;

[0038] An analysis module is used to obtain the required motion trajectory of the combined jet of the boiler and analyze the difference between the required motion trajectory of the combined jet and the predicted motion trajectory of the combined jet;

[0039] The control module is used to set the working conditions of the boiler according to the degree of difference, and to control the combined jet motion trajectory of the boiler according to the working conditions.

[0040] Compared with the prior art, the boiler combined jet motion trajectory control method and device according to the embodiment of the present invention has the following beneficial effects:

[0041] The present invention constructs a prediction model by analyzing historical data to achieve accurate prediction of the combined jet motion trajectory, and sets the working conditions of the boiler by analyzing the difference between the predicted trajectory and the required trajectory, so as to adjust the combined jet motion trajectory in real time, which can better optimize energy utilization and reduce emissions, help reduce energy consumption costs and environmental impacts, and thus improve the stability and reliability of boiler operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a schematic diagram of the flow structure of the boiler combined jet motion trajectory control method in an embodiment of the present invention;

[0043] Figure 2 It is a schematic diagram of the composition of the boiler combined jet motion trajectory control device in an embodiment of the present invention. DETAILED DESCRIPTION

[0044] The specific implementation methods of the present application are further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0045] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are the orientation or position relationship shown in the accompanying drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the platform or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0046] The terms "second" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined with "second" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "multiple" means two or more.

[0047] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0048] like Figure 1 As shown, in an embodiment of the present application, a method for controlling the combined jet motion trajectory of a boiler is provided, including: S100: obtaining historical operating data of the boiler, and analyzing the historical operating data to determine key influencing factors affecting the combined jet motion trajectory; S200: constructing a combined jet trajectory prediction model based on the key influencing factors, and performing predictions based on the combined jet trajectory prediction model to obtain a combined jet predicted motion trajectory of the boiler; S300: obtaining the required combined jet motion trajectory of the boiler, and analyzing the degree of difference between the required combined jet motion trajectory and the predicted combined jet motion trajectory; S400: setting the working conditions of the boiler according to the degree of difference, and controlling the combined jet motion trajectory of the boiler according to the working conditions.

[0049] Furthermore, the present invention constructs a prediction model through analysis of historical data to achieve accurate prediction of the combined jet motion trajectory, and sets the working conditions of the boiler by analyzing the difference between the predicted trajectory and the required trajectory, so as to adjust the combined jet motion trajectory in real time, which can better optimize energy utilization and reduce emissions, help reduce energy consumption costs and environmental impacts, and thus improve the stability and reliability of boiler operation.

[0050] In an embodiment of the present application, a method for controlling the motion trajectory of a boiler combined jet is provided, wherein the historical operating data of the boiler is obtained, and the historical operating data is analyzed to determine the key influencing factors affecting the motion trajectory of the combined jet, including: obtaining the historical operating data of the boiler, and grouping and extracting the data from the historical operating data according to the parameter type to obtain several groups of parameter data groups; obtaining a motion trajectory monitoring data group of the combined jet in the boiler, analyzing the correlation between the motion trajectory monitoring data group and the parameter data group, and determining the candidate influencing factors affecting the motion trajectory of the combined jet according to the analysis results; drawing a combined jet motion trajectory diagram according to the motion trajectory monitoring data group, and determining the time period in which each candidate influencing factor individually affects the motion trajectory of the combined jet; analyzing the change amplitude of the motion trajectory of the combined jet in each time period, and determining the candidate influencing factors with the change amplitude in the top four as the key influencing factors affecting the motion trajectory of the combined jet.

[0051] Specifically, parameter data are extracted from the historical operation data of the boiler and grouped according to parameter types to obtain several groups of parameter data groups; a motion trajectory monitoring data group of the combined jet in the boiler is obtained, and a correlation analysis is performed between the parameter data group and the motion trajectory monitoring data group to determine which parameters have a strong correlation with the motion trajectory of the combined jet; based on the results of the correlation analysis, candidate influencing factors affecting the motion trajectory of the combined jet, that is, parameters that have a strong correlation with the motion trajectory, are determined; a combined jet motion trajectory diagram is drawn based on the motion trajectory monitoring data group to further analyze the influence of each candidate influencing factor on the motion trajectory; the time period in which each candidate influencing factor affects the motion trajectory of the combined jet alone is determined to facilitate subsequent analysis of the degree of influence of each factor; the change amplitude of the motion trajectory of the combined jet in each time period is analyzed, and the candidate influencing factors with the top four change amplitudes are determined as key influencing factors affecting the motion trajectory of the combined jet.

[0052] In an embodiment of the present application, a method for controlling the motion trajectory of a boiler combined jet is provided, wherein the correlation between a motion trajectory monitoring data group and a parameter data group is analyzed, and candidate influencing factors affecting the motion trajectory of the combined jet are determined based on the analysis results, including: calculating the correlation coefficient between each parameter data group and the motion trajectory monitoring data group; screening out candidate influencing factors whose correlation coefficients exceed preset values, and determining them as candidate influencing factors affecting the motion trajectory of the combined jet.

[0053] Specifically, the correlation coefficient between each parameter data group and the motion trajectory monitoring data group is calculated; a preset correlation coefficient threshold is set to screen out parameter data groups with a strong correlation with the motion trajectory monitoring data group, and the calculated correlation coefficient is compared with the preset value. Candidate influencing factors exceeding the preset value can be screened out and determined as candidate influencing factors affecting the combined jet motion trajectory.

[0054] In an embodiment of the present application, a method for controlling the motion trajectory of a boiler combined jet is provided, which analyzes the change amplitude of the combined jet motion trajectory in each time period, and determines the candidate influencing factors with the change amplitudes in the top four as key influencing factors affecting the combined jet motion trajectory, including: determining the position information at each time point in each calculation segment, and using the Euclidean distance formula to respectively calculate the position changes between adjacent time points in each calculation segment; putting all the numerical values ​​of the position changes into corresponding data sets, and then respectively calculating the standard deviation of each data set; using the standard deviation as the change amplitude of the combined jet motion trajectory in each time period, and determining the candidate influencing factors with the change amplitudes in the top four as key influencing factors affecting the combined jet motion trajectory.

[0055] Specifically, for each time point in each calculation segment, the position information of the combined jet is determined and the position coordinates are recorded; the Euclidean distance formula is used to calculate the position changes between adjacent time points in each calculation segment to obtain a series of position change values; all position change values ​​are put into corresponding data sets, and each data set corresponds to a position change in a calculation segment; the standard deviation of each data set is calculated as the amplitude of change of the combined jet motion trajectory in each time period; the calculated standard deviations are sorted, and the candidate influencing factors with the top four amplitudes of change are selected and determined as the key influencing factors affecting the combined jet motion trajectory.

[0056] In an embodiment of the present application, a method for controlling the motion trajectory of a combined jet of a boiler is provided, wherein a combined jet trajectory prediction model is constructed based on key influencing factors, and prediction is performed according to the combined jet trajectory prediction model to obtain the predicted motion trajectory of the combined jet of the boiler, including: obtaining data corresponding to the key influencing factors to establish a data set, and constructing an initial prediction model of the combined jet trajectory of the boiler according to the data set and a preset neural network model; dividing the data set into a training set and a test set according to a certain ratio, and inputting the training set and the test set into the initial prediction model of the combined jet trajectory, training and testing the initial prediction model of the combined jet trajectory until the initial prediction model of the combined jet trajectory meets the preset convergence conditions to obtain the predicted motion trajectory of the combined jet of the boiler; and predicting by the combined jet trajectory prediction model to obtain the predicted motion trajectory of the combined jet of the boiler.

[0057] Specifically, according to the key influencing factors determined previously, a data set containing the data of these factors is established, and each data point should include the numerical value of the key influencing factor and the corresponding combined jet trajectory position information; according to the preset neural network model structure, a model suitable for the prediction of the combined jet trajectory is constructed; the data set is divided into a training set and a test set according to a certain ratio, usually using, for example, 70% of the data as the training set and 30% of the data as the test set, and the training set is input into the combined jet trajectory initial prediction model to train the model; the model is tested with the test set to verify the prediction performance of the model, and the accuracy and generalization ability of the model are evaluated by comparing the model prediction value with the true value of the test set; according to the test results, the model is tuned, and when the model meets the preset convergence conditions, the model can be used for prediction to obtain the predicted motion trajectory of the combined jet of the boiler.

[0058] In an embodiment of the present application, a method for controlling the motion trajectory of a combined jet of a boiler is provided, wherein the required motion trajectory of the combined jet of the boiler is obtained, and the degree of difference between the required motion trajectory of the combined jet and the predicted motion trajectory of the combined jet is analyzed, including: obtaining the required motion trajectory of the combined jet of the boiler and the predicted motion trajectory of the combined jet, and respectively calculating the Euclidean distance, Frechet distance and Hausdorff distance between the required motion trajectory of the combined jet and the predicted motion trajectory of the combined jet; presetting a standard Euclidean distance, a standard Frechet distance and a standard Hausdorff distance, and respectively calculating the difference between the Euclidean distance, the Frechet distance and the Hausdorff distance and the corresponding standard Euclidean distance; The method comprises the following steps: calculating the difference between the standard Frechet distance and the standard Hausdorff distance to obtain a first difference, a second difference and a third difference; adding the first difference, the second difference and the third difference to obtain a total difference, and calculating the ratios of the first difference, the second difference and the third difference to the total difference to obtain a first ratio, a second ratio and a third ratio; using the first ratio, the second ratio and the third ratio as weight coefficients of the Euclidean distance, the Frechet distance and the Hausdorff distance respectively; performing weighted addition calculation on the Euclidean distance, the Frechet distance and the Hausdorff distance and the corresponding weight coefficients to obtain the degree of difference between the required motion trajectory of the combined jet and the predicted motion trajectory of the combined jet.

[0059] Specifically, data of the required motion trajectory of the combined jet and the predicted motion trajectory of the combined jet are obtained, and then the Euclidean distance, Frechet distance and Hausdorff distance are calculated; the standard Euclidean distance, standard Frechet distance and standard Hausdorff distance are set in advance, and then the difference between them and the actual distance is calculated to obtain a first difference, a second difference and a third difference; these differences are added to obtain a total difference, and the ratio of each difference to the total difference is calculated to obtain a weight coefficient; the Euclidean distance, Frechet distance and Hausdorff distance are weightedly added with the corresponding weight coefficients to obtain the degree of difference between the required motion trajectory of the combined jet and the predicted motion trajectory of the combined jet.

[0060] In an embodiment of the present application, a method for regulating the combined jet motion trajectory of a boiler is provided, wherein the working conditions of the boiler are set according to the degree of difference, and the combined jet motion trajectory of the boiler is regulated according to the working conditions, including: a working condition-difference degree interval correspondence is preset, and the working condition-difference degree interval correspondence is associated with a corresponding working condition for each difference degree interval of operation monitoring data; the difference degree of the boiler is obtained, and the corresponding working condition of the boiler is determined based on a mapping relationship between the difference degree interval to which the difference degree belongs within the working condition-difference degree interval correspondence, wherein each working condition is set with a fuel flow rate, an air flow rate, a combustion chamber pressure and a combustion chamber temperature corresponding to the difference degree; and the combined jet motion trajectory of the boiler is regulated according to the working conditions.

[0061] Specifically, according to the preset working condition-difference degree interval correspondence, the working condition corresponding to each difference degree interval is determined; the difference degree of the boiler is obtained and divided into the corresponding difference degree interval; according to the mapping relationship between the difference degree interval to which the difference degree belongs within the working condition-difference degree interval correspondence, the corresponding working condition of the boiler is determined; according to the determined working conditions, the fuel flow rate, air flow rate, combustion chamber pressure and combustion chamber temperature of the boiler are adjusted to achieve regulation of the combined jet motion trajectory; during the regulation process, the operating status of the boiler and the combined jet motion trajectory are continuously monitored, and feedback adjustment is performed according to the actual effect to achieve stable control of the boiler operation.

[0062] like Figure 2As shown, in an embodiment of the present application, a boiler combined jet motion trajectory control device is provided, including: a determination module, used to obtain the historical operation data of the boiler, and analyze the historical operation data to determine the key influencing factors affecting the combined jet motion trajectory; a prediction module, used to construct a combined jet trajectory prediction model based on the key influencing factors, and predict according to the combined jet trajectory prediction model to obtain the combined jet predicted motion trajectory of the boiler; an analysis module, used to obtain the required motion trajectory of the combined jet of the boiler, and analyze the degree of difference between the required motion trajectory of the combined jet and the predicted motion trajectory of the combined jet; a control module, used to set the working conditions of the boiler according to the degree of difference, and control the combined jet motion trajectory of the boiler according to the working conditions.

[0063] In summary, an embodiment of the present invention provides a method and device for controlling the combined jet motion trajectory of a boiler, which includes: obtaining historical operating data of the boiler, and determining key influencing factors that affect the combined jet motion trajectory; constructing a prediction model based on the key influencing factors, and predicting the predicted motion trajectory of the combined jet; obtaining the required motion trajectory of the combined jet, and analyzing the degree of difference between the required motion trajectory of the combined jet and the predicted motion trajectory of the combined jet; setting the working conditions of the boiler according to the degree of difference, and controlling the combined jet motion trajectory of the boiler. The present invention constructs a prediction model by analyzing historical data to achieve accurate prediction of the combined jet motion trajectory, and sets the working conditions of the boiler by analyzing the difference between the predicted trajectory and the required trajectory, so as to control the combined jet motion trajectory in real time, which can better optimize energy utilization and reduce emissions, help reduce energy consumption costs and environmental impacts, and thus improve the stability and reliability of boiler operation.

[0064] Finally, it should be noted that it is obvious that those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

[0065] The above is only an example of implementation of the present invention, but it cannot be used to limit the scope of the present invention. Any structural changes made according to the present invention, as long as they do not lose the essence of the present invention, should be regarded as falling within the scope of protection of the present invention and being restricted. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working process and related instructions of the platform described above can refer to the corresponding process in the aforementioned platform embodiment, and will not be repeated here.

[0066] The term "comprises" or any other similar term is intended to cover a non-exclusive inclusion such that a process, platform, article, or apparatus / platform that includes a list of elements includes not only those elements but also other elements not expressly listed or inherent to such process, platform, article, or apparatus / platform.

[0067] So far, the technical solutions of the present invention have been described in conjunction with the further embodiments shown in the accompanying drawings, but it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

[0068] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention.

Claims

1. A method for controlling the motion trajectory of a boiler combined jet. It is characterized in that include: Obtain the historical operation data of the boiler, analyze the historical operation data, and determine the key factors affecting the combined jet motion trajectory; A combined jet trajectory prediction model is constructed based on key influencing factors, and prediction is performed based on the combined jet trajectory prediction model to obtain the combined jet prediction motion trajectory of the boiler; Obtain the required motion trajectory of the combined jet of the boiler, and analyze the difference between the required motion trajectory of the combined jet and the predicted motion trajectory of the combined jet; The working conditions of the boiler are set according to the degree of difference, and the combined jet motion trajectory of the boiler is regulated according to the working conditions.

2. A boiler combined jet motion trajectory control method according to claim 1, It is characterized in that The historical operation data of the boiler is obtained, and the historical operation data is analyzed to determine the key influencing factors affecting the combined jet motion trajectory, including: Obtain historical operation data of the boiler, and group and extract the data from the historical operation data according to parameter types to obtain several groups of parameter data groups; Acquire a motion trajectory monitoring data group of the combined jet in the boiler, analyze the correlation between the motion trajectory monitoring data group and the parameter data group, and determine candidate influencing factors affecting the motion trajectory of the combined jet according to the analysis results; Draw a combined jet motion trajectory diagram based on the motion trajectory monitoring data group, and determine the time period in which each candidate influencing factor individually affects the combined jet motion trajectory; The variation range of the combined jet motion trajectory in each time period is analyzed, and the candidate influencing factors with the top four variation ranges are identified as the key influencing factors affecting the combined jet motion trajectory.

3. A boiler combined jet motion trajectory control method according to claim 2, It is characterized in that The analysis of the correlation between the motion trajectory monitoring data set and the parameter data set, and determining the candidate influencing factors affecting the combined jet motion trajectory according to the analysis results, includes: Calculate the correlation coefficient between each parameter data group and the motion trajectory monitoring data group; The candidate influencing factors whose correlation coefficients exceed the preset values ​​are screened out and determined as the candidate influencing factors affecting the combined jet motion trajectory.

4. A boiler combined jet motion trajectory control method according to claim 2, It is characterized in that The analysis of the change amplitude of the combined jet motion trajectory in each time period and determining the candidate influencing factors with the top four change amplitudes as the key influencing factors affecting the combined jet motion trajectory include: Determine the position information of each time point in each calculation segment, and use the Euclidean distance formula to calculate the position change between adjacent time points in each calculation segment; Put all the values ​​of position changes into the corresponding data sets, and then calculate the standard deviation of each data set; The standard deviation is taken as the variation amplitude of the combined jet motion trajectory in each time period, and the candidate influencing factors with the top four variation amplitudes are identified as the key influencing factors affecting the combined jet motion trajectory.

5. A boiler combined jet motion trajectory control method according to claim 2, It is characterized in that The combined jet trajectory prediction model is constructed based on the key influencing factors, and prediction is performed according to the combined jet trajectory prediction model to obtain the combined jet prediction motion trajectory of the boiler, including: Acquire data corresponding to key influencing factors to establish a data set, and build an initial prediction model of the combined jet trajectory of the boiler based on the data set and a preset neural network model; The data set is divided into a training set and a test set according to a certain ratio, and the training set and the test set are input into the combined jet trajectory initial prediction model, and the combined jet trajectory initial prediction model is trained and tested until the combined jet trajectory initial prediction model meets the preset convergence conditions, thereby obtaining the combined jet trajectory prediction model of the boiler; The combined jet trajectory prediction model is used to predict the combined jet prediction motion trajectory of the boiler.

6. A boiler combined jet motion trajectory control method according to claim 5, It is characterized in that The step of obtaining the required motion trajectory of the combined jet of the boiler and analyzing the difference between the required motion trajectory of the combined jet and the predicted motion trajectory of the combined jet includes: Obtain the required motion trajectory of the combined jet and the predicted motion trajectory of the combined jet of the boiler, and respectively calculate the Euclidean distance, Frechet distance and Hausdorff distance between the required motion trajectory of the combined jet and the predicted motion trajectory of the combined jet; Presetting a standard Euclidean distance, a standard Frechet distance, and a standard Hausdorff distance, and respectively calculating differences between the Euclidean distance, the Frechet distance, and the Hausdorff distance and the corresponding standard Euclidean distance, the standard Frechet distance, and the standard Hausdorff distance to obtain a first difference, a second difference, and a third difference; The first difference, the second difference and the third difference are added together to obtain a total difference, and the ratios of the first difference, the second difference and the third difference to the total difference are respectively calculated to obtain a first ratio, a second ratio and a third ratio; The first ratio, the second ratio and the third ratio are used as weight coefficients of Euclidean distance, Frechet distance and Hausdorff distance respectively; The Euclidean distance, Frechet distance and Hausdorff distance are weightedly added together with the corresponding weight coefficients to obtain the difference between the required motion trajectory of the combined jet and the predicted motion trajectory of the combined jet.

7. A boiler combined jet motion trajectory control method according to claim 6, It is characterized in that The boiler working condition is set according to the difference degree, and the combined jet motion trajectory of the boiler is regulated according to the working condition, including: A corresponding relationship between working conditions and difference degree intervals is preset. For each difference degree interval of the operation monitoring data, the corresponding relationship between working conditions and difference degree intervals is associated with a corresponding working condition. Obtaining the difference degree of the boiler, and determining the working condition corresponding to the boiler based on the mapping relationship between the difference degree interval to which the difference degree belongs and the working condition-difference degree interval correspondence relationship, wherein each working condition is set with a fuel flow rate, an air flow rate, a combustion chamber pressure, and a combustion chamber temperature corresponding to the difference degree; The combined jet motion trajectory of the boiler is regulated according to the working conditions.

8. A boiler combined jet motion trajectory control device, It is characterized in that include: A determination module is used to obtain historical operation data of the boiler, analyze the historical operation data, and determine key influencing factors affecting the combined jet motion trajectory; A prediction module is used to construct a combined jet trajectory prediction model based on key influencing factors, and to make predictions based on the combined jet trajectory prediction model to obtain a predicted combined jet motion trajectory of the boiler; An analysis module is used to obtain the required motion trajectory of the combined jet of the boiler and analyze the difference between the required motion trajectory of the combined jet and the predicted motion trajectory of the combined jet; The control module is used to set the working conditions of the boiler according to the degree of difference, and to control the combined jet motion trajectory of the boiler according to the working conditions.

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