Intelligent adjustable turbulent burner system and control method thereof

Abstract

The invention provides an intelligent adjustable turbulent burner system and a control method thereof. Comprising a central air pipe, an adjustable primary air pipe, an inner secondary air pipe, an outer secondary air pipe and a cone expanding body; the adjustable primary air pipe comprises an inner primary air pipe, a rotating pipe and an outer primary air pipe, the rotating pipe is used for driving the outer primary air pipe to be close to or away from the inner primary air pipe, and a bluff body is arranged on the outer primary air pipe; the air supply assembly is used for supplying air to the stable combustion cavity in the expanded cone body; the feeding assembly is used for providing fuel for the stable combustion cavity in the expanded cone body; the detection assembly comprises a combustion state detection unit, a flame shape detection unit, a flame temperature distribution detection unit, a flue gas temperature detection unit and a combustion product detection unit; and the control unit is used for carrying out comprehensive analysis according to parameters input by the detection assembly, generating a control instruction and regulating and controlling the air supply assembly, the feeding assembly and the adjustable primary air pipe.

Description

Technical Field

[0001] The present invention relates to the technical field of combustion equipment, and in particular to an intelligent adjustable swirl burner system and a control method thereof. Background Art

[0002] Rapid deep peak regulation of boilers requires rapid load changes and stable low-load combustion under the premise of ensuring safe operation. There is an urgent need for rapid deep peak regulation of coal-fired power. In order to solve the dilemma of new energy consumption and meet the needs of rapid deep peak regulation of boilers, it is necessary to improve the flexibility of the entire power system from the power supply side, the grid side and the load side. Among them, the power supply side has the greatest potential for flexibility improvement and the strongest peak regulation capability. Based on the basic theory of combustion, domestic and foreign scholars have conducted a lot of research on improving the flexibility of the power supply side. The main directions include fuel performance improvement, furnace parameter adjustment, unit system optimization, new burner design, etc., among which the effect of the new burner is the most significant. Therefore, as the core component of the boiler combustion system, the burner plays a key role in the current rapid deep peak regulation of boilers.

[0003] At present, based on the basic theory of combustion, domestic and foreign scholars have proposed many technical measures and transformation plans for the combustion stability of boilers under low load, mainly including increasing the primary air supply temperature, increasing the outlet temperature of the pulverizer, increasing the fineness of the coal powder, increasing the coal powder concentration, and reducing the primary air rate, so that the coal powder can be more easily burned stably. However, the design of burners with real-time adjustable and variable structures has not been widely studied and applied. Intelligent adjustable swirl burners and their adjustment methods have important advantages in the flexible peak regulation of thermal power units, which can achieve efficient, safe and stable combustion control and meet the needs of the power grid for flexible peak regulation. Intelligent adjustable swirl burners can adjust the combustion parameters in real time according to the needs to achieve rapid adjustment of the load output of thermal power units, meet the needs of the power grid, and improve flexibility and adjustability; by accurately controlling the ratio of fuel supply and air supply, it can optimize the combustion efficiency, improve the power generation efficiency, and reduce energy consumption and emissions while ensuring stable combustion. In view of this, it is necessary to design an intelligent adjustable swirl burner and adjustment method to achieve the above purpose. Summary of the invention

[0004] The invention provides an intelligent adjustable swirl burner system and a control method thereof, which can reduce the emission of pollutants.

[0005] In one aspect, an intelligent adjustable swirl burner system is provided, comprising: A burner assembly comprises a central air duct, an adjustable primary air duct, an inner secondary air duct, an outer secondary air duct and an expansion cone; the adjustable primary air duct is nested on the outside of the central air duct, the inner secondary air duct is nested on the outside of the adjustable primary air duct, and the outer secondary air duct is nested on the outside of the inner secondary air duct; the adjustable primary air duct comprises an inner primary air duct, a rotating tube and an outer primary air duct, the rotating tube is used to drive the outer primary air duct to approach or move away from the inner primary air duct, and a blunt body is arranged on the outer primary air duct; The air supply component provides air to the combustion stabilizing cavity in the expansion cone through the central air duct, the adjustable primary air duct, the inner secondary air duct, and the outer secondary air duct; A feed assembly, which provides fuel to the combustion stabilizing cavity in the expansion cone; A detection component, including a combustion state detection unit, a flame shape detection unit, a flame temperature distribution detection unit, a smoke temperature detection unit and a combustion product detection unit; The control unit is used to perform comprehensive analysis based on the parameters input by the combustion state detection unit, the flame shape detection unit, the flame temperature distribution detection unit, the flue gas temperature detection unit and the combustion product detection unit, generate control instructions, and regulate the air supply component, the feeding component and the adjustable primary air duct.

[0006] Optionally, the air inlets of the central air duct, the primary air duct, the inner secondary air duct, and the outer secondary air duct are arranged on the same side, and the air outlets of the central air duct, the primary air duct, the inner secondary air duct, and the outer secondary air duct are arranged on the same side, and the oil gun penetrates from one end close to the air inlet of the central air duct and extends to one end close to the air outlet of the central air duct. Optionally, the central air duct is connected to the coal powder concentrator at the center of the burner, the central air is directly drawn out by the large wind box of the air supply assembly, and an electric regulating door is arranged on the central air duct to adjust the central air volume. Optionally, the primary air-powder mixture first enters the air inlet of the adjustable primary air duct, and then passes through the adjustable primary air duct and a coal powder concentrator arranged in the adjustable primary air duct to achieve radial separation and ignition and combustion of the coal powder airflow.

[0007] Optionally, the inner secondary air and the outer secondary air are sprayed into the furnace at different stages of combustion through the concentric inner secondary air duct and the outer secondary air duct in the burner to achieve graded air supply and reduce the generation of NOx.

[0008] Optionally, the inner secondary air duct and the outer secondary air duct are provided with electric adjustment doors for adjusting the inner secondary air volume and the outer secondary air volume.

[0009] Optionally, an axial swirler is provided in the inner secondary air duct to rotate the inner secondary air.

[0010] On the other hand, a control method of an intelligent adjustable swirl burner system is provided, and the control method of the intelligent adjustable swirl burner system is applied to the intelligent adjustable swirl burner system as described in any one of the above items, comprising: Acquire combustion parameter information detected by a combustion state detection unit, a flame shape detection unit, a flame temperature distribution detection unit, a smoke temperature detection unit, and a combustion product detection unit, wherein the combustion parameter information includes a combustion state, a flame shape, a flame temperature distribution, a smoke temperature, and a combustion product; The control unit analyzes the combustion parameter information and generates control instructions; The control unit controls the air supply assembly, the air supply subassembly and the adjustable primary air duct according to the control instructions.

[0011] Optionally, the control unit analyzes the parameter information and generates a control instruction, including: A weight formula is constructed to describe the relationship between the combustion parameter information and the adjustable parameters, wherein the adjustable parameters include the air volume of the air supply component, the position of the blunt body, the position and size of the powder-rich area and the powder-poor area, the rotation direction and rotation speed of the adjustable primary air duct, and the coal powder concentration; Determine the combustion parameters that do not meet the requirements in the combustion parameter information as the combustion parameters to be adjusted; Determining the parameters to be adjusted among the adjustable parameters according to the influence of the adjustable parameters in the weight formula on the combustion parameters to be adjusted; The specific adjustment value of the parameter to be adjusted is determined according to the weight formula as a control instruction.

[0012] Optionally, a weight formula is constructed to describe the relationship between the parameter information and the adjustable parameters, including: Determining a first-level weight, where the first-level weight is used to describe the influence of a single input combustion parameter information on an output parameter to be adjusted; Determine a second-level weight according to the first-level weight, wherein the second-level weight is used for the influence of the parameters to be adjusted after the interaction between the multiple input combustion parameter information; A weight formula is constructed based on the first-level weights and the second-level weights to describe the relationship between the combustion parameter information and the adjustable parameters.

[0013] The technical solution provided by the embodiments of the present disclosure has the following beneficial effects: In the disclosed embodiment, an intelligent adjustable swirl burner system is provided, and the intelligent adjustable swirl burner system includes an adjustable primary air duct, and the adjustable primary air duct includes an inner primary air duct, a rotating tube and an outer primary air duct, and a blunt body is arranged on the outer primary air duct. The spatial orientation adjustability of the adjustable primary air duct is realized by the rotating tube, and the size and intensity of the vortex are affected by the spatial position adjustment of the blunt body, and the position and size of the rich powder area and the poor powder area are adjusted, so as to more effectively control the flame shape and temperature distribution, and improve the combustion efficiency and stability. A graded air supply system is adopted, and the air volume and air duct structure of each air duct are automatically adjusted by a control unit, so as to significantly improve the coal type adaptability of the burner, optimize the combustion stability during low-load operation, reduce the generation of NOx, reduce pollutant emissions, and optimize and adjust according to real-time feedback through a closed-loop control system, so as to ensure that the burner always operates in the best state, greatly improve the combustion efficiency and stability, and bring innovative technological progress and significant social and economic benefits to the burner field. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the present invention or 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 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.

[0015] Figure 1 A schematic diagram of the structure of an intelligent adjustable swirl burner system provided in an embodiment of the present disclosure; Figure 2 A method flow chart of a control method of an intelligent adjustable swirl burner system provided in an embodiment of the present disclosure; Figure 3 A schematic diagram of a control relationship provided in an embodiment of the present disclosure.

[0016] The reference numerals are as follows: 1: burner; 11: central air duct; 111: first blunt body; 12: adjustable primary air duct; 121: inner primary air duct; 122: rotating tube; 123: outer primary air duct; 1231: second blunt body; 13: inner secondary air duct; 131: axial cyclone; 14: outer secondary air duct; 15: cone expansion body; 16: flame stabilizer; 2: Air supply components; 3: Feeding assembly; 4: Detection components; 5: Control unit. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] Figure 1 This is a schematic diagram of the structure of an intelligent adjustable swirl burner system provided by an embodiment of the present disclosure. Figure 1 ,include: The burner assembly 1 comprises a central air duct 11, an adjustable primary air duct 12, an inner secondary air duct 13, an outer secondary air duct 14 and an expansion cone 15; the adjustable primary air duct 12 is nested on the outside of the central air duct 11, the inner secondary air duct 13 is nested on the outside of the adjustable primary air duct 12, and the outer secondary air duct 14 is nested on the outside of the inner secondary air duct 13; the adjustable primary air duct 12 comprises an inner primary air duct 121, a rotating tube 122 and an outer primary air duct 123, the rotating tube 122 is used to drive the outer primary air duct 123 to approach or move away from the inner primary air duct 122, and the outer primary air duct 123 is provided with a second blunt body 1231; The air supply component 2 provides air to the combustion stabilizing chamber 151 in the expansion cone 15 through the central air duct 11, the adjustable primary air duct 12, the inner secondary air duct 13, and the outer secondary air duct 14; The feed assembly 3 provides fuel to the combustion stabilization chamber 151 in the expansion cone 15; Detection component 4, including a combustion state detection unit, a flame shape detection unit, a flame temperature distribution detection unit, a smoke temperature detection unit and a combustion product detection unit; The control unit 5 is used to perform comprehensive analysis based on the parameters input by the combustion state detection unit, the flame shape detection unit, the flame temperature distribution detection unit, the flue gas temperature detection unit and the combustion product detection unit, generate control instructions, and regulate the air supply component 2, the feeding component 3 and the adjustable primary air duct 12.

[0019] In the disclosed embodiment, an intelligent adjustable swirl burner system is provided, and the intelligent adjustable swirl burner system includes an adjustable primary air duct, and the adjustable primary air duct includes an inner primary air duct, a rotating tube and an outer primary air duct, and a blunt body is arranged on the outer primary air duct. The spatial orientation adjustability of the adjustable primary air duct is realized by the rotating tube, and the size and intensity of the vortex are affected by the spatial position adjustment of the blunt body, and the position and size of the rich powder area and the poor powder area are adjusted, so as to more effectively control the flame shape and temperature distribution, and improve the combustion efficiency and stability. A graded air supply system is adopted, and the air volume and air duct structure of each air duct are automatically adjusted by a control unit, so as to significantly improve the coal type adaptability of the burner, optimize the combustion stability during low-load operation, reduce the generation of NOx, reduce pollutant emissions, and optimize and adjust according to real-time feedback through a closed-loop control system, so as to ensure that the burner always operates in the best state, greatly improve the combustion efficiency and stability, and bring innovative technological progress and significant social and economic benefits to the burner field.

[0020] In the disclosed embodiment, the spatial orientation of the adjustable primary air duct is adjustable through the cooperation of the rotating tube and the inner primary air duct. This design can change the ignition distance and time according to different combustion requirements, adjust the shape of the central recirculation zone, thereby improving the adaptability of coal types and achieving stable combustion under low load conditions.

[0021] In the disclosed embodiment, the air inlets of the central air duct 11, the adjustable primary air duct 12, the inner secondary air duct 13, and the outer secondary air duct 14 are arranged on the same side, and the air outlets of the central air duct 11, the adjustable primary air duct 12, the inner secondary air duct 13, and the outer secondary air duct 14 are arranged on the same side, and the oil gun penetrates from one end close to the air inlet of the central air duct 11 and extends to one end close to the air outlet of the central air duct 11. By arranging the air inlet and the air outlet in the above manner, graded air supply is ensured during the combustion process.

[0022] In the disclosed embodiment, the central air duct is connected to the coal powder concentrator at the center of the burner, the central air is directly led out by the large wind box of the air supply assembly, and an electric regulating door is arranged on the central air duct to adjust the central air volume. By setting the electric regulating door, the adjustability of the central air volume is ensured.

[0023] In the disclosed embodiment, the primary air-powder mixture first enters the air inlet of the adjustable primary air duct 12, and then passes through the adjustable primary air duct 12 and the coal powder concentrator arranged in the adjustable primary air duct 12, so as to realize radial separation and ignition and combustion of the coal powder airflow.

[0024] In the disclosed embodiment, the inner secondary air and the outer secondary air are sprayed into the furnace at different stages of combustion through the concentric inner secondary air duct 13 and the outer secondary air duct 14 in the burner, thereby realizing graded air supply and reducing the generation of NOx.

[0025] In the disclosed embodiment, the inner secondary air and the outer secondary air are sprayed into the furnace at different stages of combustion through the concentric inner secondary air and outer secondary air annular channels in the burner. This improvement helps to more effectively reduce the generation of NOx, reduce the emission of pollutants, and improve combustion efficiency.

[0026] In the disclosed embodiment, the inner secondary air duct 13 and the outer secondary air duct 14 are provided with electric adjustment doors for adjusting the inner secondary air volume and the outer secondary air volume. By providing the electric adjustment doors, the adjustability of the inner secondary air volume and the outer secondary air volume is ensured.

[0027] In the disclosed embodiment, an axial swirler 131 is provided in the inner secondary air duct 13 to rotate the inner secondary air. The axial swirler rotates the passing secondary air to generate negative pressure, causing the high-temperature flue gas to reflux and provide energy for the ignition of the pulverized coal airflow.

[0028] In the disclosed embodiment, the burner further comprises a flame stabilizing ring, which enhances the turbulence of the pulverized coal airflow and the recirculation of flue gas.

[0029] Figure 2 A control method for an intelligent adjustable swirl burner system is provided in an embodiment of the present disclosure. Figure 2 ,include: S101. Obtain combustion parameter information detected by a combustion state detection unit, a flame shape detection unit, a flame temperature distribution detection unit, a flue gas temperature detection unit and a combustion product detection unit, wherein the combustion parameter information includes combustion state, flame shape, flame temperature distribution, flue gas temperature and combustion products.

[0030] S102: The control unit analyzes the combustion parameter information and generates a control instruction.

[0031] In one example, step S102 includes: Step 1: construct a weight formula to describe the relationship between combustion parameter information and adjustable parameters, wherein the adjustable parameters include the air volume of the air supply component, the position of the blunt body, the position and size of the powder-rich area and the powder-poor area, the rotation direction and rotation speed of the adjustable primary air duct, and the coal powder concentration.

[0032] In one example, step 1 includes: The first step is to determine the first level weight, which is used to describe the influence of a single input combustion parameter information on the output parameter to be adjusted.

[0033] In the embodiment of the present disclosure, the input combustion state parameters include: combustion state parameters ( ), flame shape and spatial position ( )、Flame temperature distribution( )、Flue gas temperature( )、Combustion products( ).

[0034] In the disclosed embodiment, Indicates the furnace temperature in K. Indicates the spatial position of the flame center, in mm, A3 indicates the flame temperature gradient, in K / m, Indicates the flue gas temperature in K. Indicates the combustion products CO and NO X The concentration is in mol / L.

[0035] The corresponding first-level weights are: , , , , .

[0036] The first level weight is based on ~ When these five inputs change individually, the impact on the output is: ~ are independent of each other and do not consider ~ The interaction relationship between them.

[0037] The second step is to determine the second-level weights, where the second-level weights are used to determine the influence of the interaction between multiple input combustion parameter information on the parameters to be adjusted.

[0038] In the embodiment of the present disclosure, the second level weight determination ~ When these five inputs change at the same time, some of them will affect each other, causing the output to change. (For example, When a single change occurs, the output control instruction is , When a single change occurs, the output control instruction is ,like and can influence each other, then and When the output control command changes, it is not + , at this time, it is necessary to describe the second level weight and The relationship between In the disclosed embodiment, It acts directly on the output and does not interact with other inputs. There is no second level weight, or The second-level weight is equal to the first-level weight (that is, ),Will Put it in the first parameter set middle, Represents the first parameter set The impact on output.

[0039] In the disclosed embodiment, and There is a second level of weight , in, and Through experiments, we found that , ,but .Will and Name the second parameter set ,but The first parameter set The weight of the second level (i.e., the weight of the parameter set) is used to describe the impact of the interaction of combustion parameters on the output.

[0040] By designing a controllable combustion chamber experiment, the flame center position and temperature gradient data under different fuel flow rates, oxygen concentrations, and mixing speeds were collected, and a model was established using the multivariate linear regression method to determine the weight coefficients that describe the relationship between combustion parameters and flame characteristics. and .

[0041] In the disclosed embodiment, and There is a second level of weight ,in, and Through experiments, we found that , ,but .Will and Named as the third parameter set ,but The third parameter set The weight of .

[0042] By designing a series of combustion experiments, the flue gas temperature (A4) and the concentrations of combustion products CO and NOX (A5) under different working conditions were measured, and the correlation model between these parameters and combustion efficiency was established by multivariate linear regression analysis. The experimental data were fitted by the least squares method, and the weight coefficients in the model were finally determined. and , in order to quantify the influence of each parameter on the combustion results.

[0043] The third step is to construct a weight formula based on the first-level weights and the second-level weights to describe the relationship between the combustion parameter information and the adjustable parameters.

[0044] In the embodiment of the present disclosure, the weight formula is: , The value range is , The value range is .

[0045] in, It is output signal, Indicates the air volume (i.e. the volume of primary and secondary air), The size of , , , Decide. represents the spatial position of the bluff body, The size of and Decide. The location and size of the powder-rich and powder-poor areas, The size of , , Decide. Indicates the rotation direction and rotation rate of the primary air duct. The size of and Decide, Indicates the concentration of pulverized coal, The size of , , Decide.

[0046] It is The control logic function corresponding to the output signal. is the set of all input signals, . It is Input signal set The weight factor of . It is Input signal set Corresponding sub-model function. Corresponding to different output signals ( to ) are , , , , . It means summing the products of the weights of all input signal sets and the sub-model functions.

[0047] In order to determine the sub-model function corresponding to different output signals ( , , , , ), first collect a large amount of experimental data, including all input signal sets and corresponding output signals. Then, based on the characteristics of the problem and the distribution of the data, select a suitable mathematical model, and estimate the model parameters through regression analysis or machine learning algorithms. During the model training process, we used feature engineering techniques to optimize the input signal, and adopted methods such as cross-validation to ensure the generalization ability of the model. The specific form and weight factor W of each sub-model function were determined by optimization algorithms such as least squares and gradient descent. In the model verification stage, an independent test data set was used to evaluate the accuracy of the model, and the model was adjusted and optimized based on the verification results, and finally a sub-model function that can accurately describe the relationship between the input signal and the output signal was obtained.

[0048] In the embodiment of the present disclosure, the functional relationship between multiple combustion parameter information and multiple adjustable parameters can be described in detail through the first-level weight and the second-level weight, thereby realizing many-to-many regulation.

[0049] In the embodiment of the present disclosure, for The control method is as follows: .

[0050] Determine the sub-model function According to the input signal right The control of the sub-function model Can be constructed based on experiments.

[0051] For example, the flame shape and spatial position Air volume The largest influence is (weight is 0.5), followed by combustion products (weight is 0.3), and finally the combustion state parameters (The weight is 0.2). If the flame changes beyond the expected range (irregular flame shape, flame center moves backward), first increase the primary and secondary air volume to make Quickly return to range. Increase air volume: ,in, is the increased air volume. , The amount of change, It is for The sub-model function.

[0052] Monitor the adjustment effect: After adjusting the air volume, monitor whether the flame shape and spatial position return to the predetermined range. Record the adjusted air volume ( ) and other input signals ( to ).

[0053] Data analysis: before and after analysis The changes in Z1 and the influence of A2 on Z1 adjustment were analyzed. It was determined that the adjusted primary and secondary air volume (Z1) effectively improved the flame shape and spatial position, verifying the effectiveness of the control logic.

[0054] In the embodiment of the present disclosure, for The control method is as follows: = .

[0055] In the embodiment of the present disclosure, for The control method is as follows: .

[0056] In the embodiment of the present disclosure, for The control method is as follows: .

[0057] In the embodiment of the present disclosure, for The control method is as follows: .

[0058] Figure 3 A schematic diagram of a control relationship provided in an embodiment of the present disclosure, in Figure 3 The input signal is shown in With output signal The role relationship.

[0059] Step 2: Determine the combustion parameters that do not meet the requirements in the combustion parameter information as the combustion parameters to be adjusted.

[0060] Step 3: Determine the parameters to be adjusted among the adjustable parameters according to the influence of the adjustable parameters in the weight formula on the combustion parameters to be adjusted.

[0061] According to the control formula in step 2, determine to Specific regulatory data serves as control instructions.

[0062] S103, the control unit controls the air supply assembly, the air supply subassembly and the adjustable primary air duct according to the control instruction.

[0063] In an embodiment of the present disclosure, a control method for an intelligent adjustable swirl burner system is provided, which can realize automatic control of the intelligent adjustable swirl burner system, ensure that the intelligent adjustable swirl burner system remains in a good combustion state, and is conducive to reducing pollutant emissions.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An intelligent adjustable swirl burner system, characterized in that: include: A burner assembly comprises a central air duct, an adjustable primary air duct, an inner secondary air duct, an outer secondary air duct and an expansion cone; the adjustable primary air duct is nested on the outside of the central air duct, the inner secondary air duct is nested on the outside of the adjustable primary air duct, and the outer secondary air duct is nested on the outside of the inner secondary air duct; the adjustable primary air duct comprises an inner primary air duct, a rotating tube and an outer primary air duct, the rotating tube is used to drive the outer primary air duct to approach or move away from the inner primary air duct, and a blunt body is arranged on the outer primary air duct; The air supply component provides air to the combustion stabilizing cavity in the expansion cone through the central air duct, the adjustable primary air duct, the inner secondary air duct, and the outer secondary air duct; A feed assembly, which provides fuel to the combustion stabilizing cavity in the expansion cone; A detection component, including a combustion state detection unit, a flame shape detection unit, a flame temperature distribution detection unit, a smoke temperature detection unit and a combustion product detection unit; The control unit is used to perform comprehensive analysis based on the parameters input by the combustion state detection unit, the flame shape detection unit, the flame temperature distribution detection unit, the flue gas temperature detection unit and the combustion product detection unit, generate control instructions, and regulate the air supply component, the feeding component and the adjustable primary air duct.

2. The intelligent adjustable swirl burner system according to claim 1 is characterized in that: The air inlets of the central air duct, the primary air duct, the inner secondary air duct, and the outer secondary air duct are arranged on the same side, and the air outlets of the central air duct, the primary air duct, the inner secondary air duct, and the outer secondary air duct are arranged on the same side. The oil gun penetrates from one end close to the air inlet of the central air duct and extends to one end close to the air outlet of the central air duct.

3. The intelligent adjustable swirl burner system according to claim 1, characterized in that: The central air duct is connected to the pulverized coal concentrator at the center of the burner. The central air is directly led out by the large wind box of the air supply assembly, and an electric regulating door is arranged on the central air duct to adjust the central air volume.

4. The intelligent adjustable swirl burner system according to claim 1, characterized in that: The primary air-powder mixture first enters the air inlet of the adjustable primary air duct, and then passes through the adjustable primary air duct and the pulverized coal concentrator arranged in the adjustable primary air duct to achieve radial separation and ignition and combustion of the pulverized coal airflow.

5. The intelligent adjustable swirl burner system according to claim 1, characterized in that: The inner secondary air and the outer secondary air are sprayed into the furnace at different stages of combustion through the concentric inner secondary air duct and the outer secondary air duct in the burner, so as to realize graded air supply and reduce the generation of NOx.

6. The intelligent adjustable swirl burner system according to claim 1, characterized in that: The inner secondary air duct and the outer secondary air duct are provided with electric adjustment doors for adjusting the inner secondary air volume and the outer secondary air volume.

7. The intelligent adjustable swirl burner system according to claim 1, characterized in that: An axial swirler is arranged in the inner secondary air duct to rotate the inner secondary air.

8. A control method for an intelligent adjustable swirl burner system, characterized in that: The control method of the intelligent adjustable swirl burner system is applied to the intelligent adjustable swirl burner system according to any one of claims 1 to 7, comprising: Acquire combustion parameter information detected by a combustion state detection unit, a flame shape detection unit, a flame temperature distribution detection unit, a smoke temperature detection unit, and a combustion product detection unit, wherein the combustion parameter information includes a combustion state, a flame shape, a flame temperature distribution, a smoke temperature, and a combustion product; The control unit analyzes the combustion parameter information and generates control instructions; The control unit controls the air supply assembly, the air supply subassembly and the adjustable primary air duct according to the control instructions.

9. The control method of the intelligent adjustable swirl burner system according to claim 8, characterized in that: The control unit analyzes the parameter information and generates control instructions, including: A weight formula is constructed to describe the relationship between the combustion parameter information and the adjustable parameters, wherein the adjustable parameters include the air volume of the air supply component, the position of the blunt body, the position and size of the powder-rich area and the powder-poor area, the rotation direction and rotation speed of the adjustable primary air duct, and the coal powder concentration; Determine the combustion parameters that do not meet the requirements in the combustion parameter information as the combustion parameters to be adjusted; Determining the parameters to be adjusted among the adjustable parameters according to the influence of the adjustable parameters in the weight formula on the combustion parameters to be adjusted; The specific adjustment value of the parameter to be adjusted is determined according to the weight formula as a control instruction.

10. The control method of the intelligent adjustable swirl burner system according to claim 9, characterized in that: The weight formula is constructed to describe the relationship between parameter information and adjustable parameters, including: Determining a first-level weight, where the first-level weight is used to describe the influence of a single input combustion parameter information on an output parameter to be adjusted; Determining a second-level weight according to the first-level weight, wherein the second-level weight is used for the influence of the parameters to be adjusted after the interaction between the multiple input combustion parameter information; A weight formula is constructed based on the first-level weights and the second-level weights to describe the relationship between the combustion parameter information and the adjustable parameters.

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