Pulse type heating furnace control method

Abstract

The invention discloses a pulse type heating furnace control method which comprises the steps that under the preset working condition, the target relation representing the relation among the opening number of burners, the opening degree of a first flow adjusting valve and the opening degree of a second flow adjusting valve is obtained, and the current opening number of the burners is obtained; when the current opening number of the burners is smaller than a preset number, determining a first current opening degree required by the first flow regulating valve and a second current opening degree required by the second flow regulating valve according to the target relation and the current opening number of the burners; and the opening degree of the first flow adjusting valve is adjusted to be the first current opening degree, and the opening degree of the second flow adjusting valve is adjusted to be the second current opening degree. The risk of air-fuel ratio imbalance can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of pulse heating furnaces, and in particular, to a control method of a pulse heating furnace. Background Art

[0002] The pulse heating furnace comprises a furnace body, an air duct, a gas duct and a plurality of burners arranged on both sides of the furnace body. The burners are connected to the air duct and the gas duct. A gas flow meter for detecting the gas flow is arranged on the gas duct.

[0003] When the pulse heating furnace is heating the steel billet, if the production load is small, the number of burners opened is small, which makes the gas flow in the gas pipeline small, and the detection result of the gas flow meter is easily distorted. If the air-fuel ratio is adjusted according to the distorted detection result, it is easy to cause the air-fuel ratio to be out of balance, and in serious cases, the furnace door will catch fire and damage the equipment. Summary of the invention

[0004] The embodiment of the present application provides a pulse heating furnace control method for solving the technical problem that the air-fuel ratio of the pulse heating furnace is easily out of balance when the number of burners opened is small.

[0005] Other features and advantages of the present application will become apparent from the following detailed description, or may be learned in part by the practice of the present application.

[0006] According to a first aspect of the present application, a control method for a pulse heating furnace is provided, wherein the pulse heating furnace comprises a plurality of burners, a gas pipeline for conveying gas to the plurality of burners, and an air pipeline for conveying air to the plurality of burners, wherein a first flow regulating valve is provided on the gas pipeline, and a second flow regulating valve is provided on the air pipeline, wherein the method comprises:

[0007] Under the preset working condition, a target relationship representing the relationship between the number of burner openings, the opening of the first flow control valve and the opening of the second flow control valve is obtained, and the current number of burner openings is obtained;

[0008] When the current burner opening number is less than a preset number, determining a first current opening required for the first flow control valve and a second current opening required for the second flow control valve according to the target relationship and the current burner opening number;

[0009] The opening degree of the first flow regulating valve is adjusted to the first current opening degree, and the opening degree of the second flow regulating valve is adjusted to the second current opening degree.

[0010] In some embodiments, based on the above scheme, the pulse heating furnace further includes a third flow regulating valve for regulating the gas flow of each burner, a fourth flow regulating valve for regulating the air flow of each burner, a first on-off valve for opening and closing the gas of each burner, and a second on-off valve for opening and closing the air of each burner. Under the preset working conditions, obtaining a target relationship characterizing the relationship between the number of burner openings, the opening degree of the first flow regulating valve, and the opening degree of the second flow regulating valve, and obtaining the current number of burner openings, includes:

[0011] Under the preset working condition, the opening of the fourth flow regulating valve of the multiple burners is adjusted to a first preset opening, the first on-off valve and the second on-off valve of the multiple burners are opened, and the opening of the third flow regulating valve of the multiple burners is adjusted so that the gas pressure before each burner is within the first preset pressure range;

[0012] Close the first on-off valve and the second on-off valve of the plurality of burners to obtain a first target burner, open the first on-off valve and the second on-off valve of the first target burner, adjust the opening of the first flow control valve and the opening of the second flow control valve, and when the gas pressure in front of the first target burner is within the first preset pressure range, obtain the first target opening of the first flow control valve, and when the air pressure in front of the first target burner is within the second preset pressure range, obtain the second target opening of the second flow control valve;

[0013] The target relationship is determined according to the corresponding relationship among the number of the first target burners, the first target opening, and the second target opening.

[0014] In some embodiments, based on the above scheme, the opening of the first on-off valve and the second on-off valve of the plurality of burners and the adjustment of the opening of the third flow regulating valve of the plurality of burners so that the gas pressure before each burner is within a first preset pressure range include:

[0015] Adjusting the opening of the first flow regulating valve to a second preset opening, and opening the first on-off valve and the second on-off valve of the plurality of burners;

[0016] Adjusting the opening of the third quantity regulating valve of the plurality of burners so that the gas flow rate of each burner is a preset flow rate;

[0017] The openings of the third flow regulating valves of the plurality of burners are adjusted so that the gas pressure before each burner is within the first preset pressure range.

[0018] In some embodiments, based on the above scheme, adjusting the opening of the third quantity regulating valve of the plurality of burners so that the gas flow rate of each burner is a preset flow rate includes:

[0019] Determine a first preset total gas flow rate according to the product of the corresponding number of the plurality of burners and the preset flow rate;

[0020] For the plurality of burners, adjusting the opening of the third flow regulating valve of the plurality of burners so that the current total gas flow of the gas pipeline is equal to the first preset total gas flow;

[0021] For each burner, the opening of the third flow regulating valve of each burner is adjusted in turn so that the gas flow of each burner is a preset flow.

[0022] In some embodiments, based on the above solution, adjusting the opening of the third flow regulating valve of the plurality of burners so that the current total gas flow of the gas pipeline is equal to the first preset total gas flow includes:

[0023] adjusting the opening of the third flow regulating valve of the plurality of burners to a first opening so that a deviation between a first current total gas flow of the gas pipeline and the first preset total gas flow is less than a preset flow deviation;

[0024] Determining an opening adjustment range according to the first opening;

[0025] Within the opening adjustment range, the opening of the third flow regulating valve of the plurality of burners is adjusted so that a first current total gas flow of the gas pipeline is equal to the first preset total gas flow.

[0026] In some embodiments, based on the above solution, for each burner, adjusting the opening of the third flow regulating valve of each burner in turn so that the gas flow of each burner is a preset flow includes:

[0027] Acquire a second target burner and a third target burner, wherein the third target burner is different from the second target burner;

[0028] Opening the first on-off valve and the second on-off valve of the second target burner to determine a second current total gas flow rate of the gas pipeline;

[0029] The first on-off valve and the second on-off valve of the third target burner are opened, and the third flow regulating valve of the third target burner is adjusted so that the deviation between the third current total gas flow of the gas pipeline and the second current total gas flow of the gas pipeline is the preset flow.

[0030] In some embodiments, based on the above scheme, adjusting the opening of the third flow regulating valve of the plurality of burners so that the gas pressure before each burner is within the first preset pressure range includes:

[0031] For the multiple burners, obtaining the current gas pressures of the multiple burners, and determining whether the current gas pressures of the multiple burners are all within the preset pressure range;

[0032] If not, determining that the burner with the largest deviation between the gas pressure and the preset pressure range is the fourth target burner, adjusting the third flow regulating valve of the fourth target burner so that the gas pressure before the fourth target burner is within the preset pressure range, and returning to the step of obtaining the current gas pressures of the multiple burners;

[0033] If so, the step of closing the first on-off valve and the second on-off valve of the plurality of burners is performed.

[0034] In some embodiments, based on the foregoing solution, the present invention further includes:

[0035] When the current number of burners opened is greater than or equal to the preset number, determining a second preset total gas flow rate according to the product of the current number of burners opened and the preset flow rate;

[0036] According to the flow detection result of the gas pipeline, the opening of the first flow regulating valve is adjusted to make the fourth current total gas flow of the gas pipeline equal to the second preset total gas flow.

[0037] In some embodiments, based on the above scheme, the burner is provided with a distribution valve for distributing the flow of primary air and secondary air, and after adjusting the opening of the first flow regulating valve to the first current opening and adjusting the opening of the second flow regulating valve to the second current opening, it also includes:

[0038] Get the preset length and current length of the burner flame;

[0039] According to the size relationship between the preset length and the current length, the flow rates of the primary air and the secondary air are distributed through the distribution valve.

[0040] In some embodiments, based on the above solution, the flow rates of the primary air and the secondary air are distributed through the distribution valve according to the size relationship between the preset length and the current length, including:

[0041] If the current length is greater than the preset length, the flow rate of the secondary air is reduced and the flow rate of the primary air is increased through the distribution valve;

[0042] If the current length is equal to the preset length, the flow rates of the primary air and the secondary air are kept unchanged;

[0043] If the current length is less than the preset length, the flow rate of the secondary air is increased and the flow rate of the primary air is reduced through the distribution valve.

[0044] The beneficial effects of this application are as follows:

[0045] When the current number of burner openings is less than the preset number, that is, the number of burner openings is small, the first opening and the second opening are determined according to the target relationship and the current number of burner openings, the opening of the first flow regulating valve is adjusted to the first opening, and the opening of the second flow regulating valve is adjusted to the second opening, instead of adjusting the gas flow according to the detection result of the gas flowmeter, thereby reducing the risk of air-fuel ratio imbalance.

[0046] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] The drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present application, and together with the specification, are used to explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0048] Figure 1 A flow chart of a pulse heating furnace control method in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, other embodiments of the multiple burners obtained by ordinary technicians in this field without creative work are all within the scope of protection of this application.

[0050] In addition, described feature, structure or characteristic can be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present application. However, those skilled in the art will appreciate that the technical scheme of the present application can be put into practice without one or more of the specific details, or other methods, components, devices, steps, etc. can be adopted. In other cases, known methods, devices, realizations or operations are not shown or described in detail to avoid blurring the various aspects of the application.

[0051] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities may be implemented in software form, or in one or more hardware modules or integrated circuits, or in different networks and / or processor devices and / or microcontroller devices.

[0052] The flowcharts shown in the accompanying drawings are only exemplary and do not necessarily include the contents and operations / steps of the multiple burners, nor do they have to be executed in the order described. For example, some operations / steps can be decomposed, while some operations / steps can be combined or partially combined, so the actual execution order may change according to actual conditions.

[0053] In the description of this application, it should be understood that the terms "first" 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the feature. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0054] Figure 1 A flow chart showing a pulse heating furnace control method in an embodiment of the present application is shown. Figure 1 , a pulse heating furnace control method is provided, the pulse heating furnace comprises a plurality of burners, a gas pipeline for conveying gas to the plurality of burners, and an air pipeline for conveying air to the plurality of burners, the gas pipeline is provided with a first flow regulating valve, the air pipeline is provided with a second flow regulating valve, the pulse heating furnace also comprises a furnace body, the plurality of burners are arranged on both sides of the furnace body, and are used to heat the furnace body, the method is described in detail as follows:

[0055] In step S1, under the preset working condition, a target relationship characterizing the relationship between the number of burner openings, the opening of the first flow regulating valve and the opening of the second flow regulating valve is obtained, and the number of burner openings currently obtained is obtained. The operating parameters of the preset working condition may include a preset gas main pressure and a preset gas calorific value. Under the preset working condition, it can be understood that when the gas main pressure is the preset gas main pressure and the gas calorific value is the preset gas calorific value, the gas main is connected to the gas pipeline for delivering gas to the gas pipeline.

[0056] In step S2, when the current burner opening number is less than a preset number, a first current opening required by the first flow control valve and a second current opening required by the second flow control valve are determined according to the target relationship and the current burner opening number. The preset number may be one or two.

[0057] In step S3, the opening degree of the first flow regulating valve is adjusted to the first current opening degree, and the opening degree of the second flow regulating valve is adjusted to the second current opening degree.

[0058] In some embodiments, the pulse heating furnace also includes a third flow regulating valve for adjusting the gas flow of each burner, a fourth flow regulating valve for adjusting the air flow of each burner, a first on-off valve for opening and closing the gas of each burner, and a second on-off valve for opening and closing the air of each burner. Under the preset operating conditions, the target relationship characterizing the relationship between the number of burner openings, the opening degree of the first flow regulating valve and the second flow regulating valve is obtained, and the current number of burner openings is obtained, including: under the preset operating conditions, adjusting the opening degree of the fourth flow regulating valve of the multiple burners to the first preset opening degree, opening the first on-off valve and the second on-off valve of the multiple burners, and adjusting the opening degree of the third flow regulating valve of the multiple burners so that each burner the gas pressures before the first target burner are all within the first preset pressure range; the first on-off valve and the second on-off valve of the multiple burners are closed to obtain a first target burner, the first on-off valve and the second on-off valve of the first target burner are opened, the opening of the first flow regulating valve and the opening of the second flow regulating valve are adjusted, and when the gas pressures before the first target burner are all within the first preset pressure range, the first target opening of the first flow regulating valve is obtained, and when the air pressure before the first target burner is within the second preset pressure range, the second target opening of the second flow regulating valve is obtained; the target relationship is determined according to the corresponding relationship between the number of the first target burners, the first target opening, and the second target opening.

[0059] In some embodiments, the first on-off valve and the second on-off valve are quick-cut valves, each burner is connected to the gas pipeline via a first connecting pipeline, each burner is connected to the air pipeline via a second connecting pipeline, the third flow regulating valve is arranged on the first connecting pipeline, and the fourth flow regulating valve is arranged on the second connecting pipeline.

[0060] In some embodiments, opening the first on-off valve and the second on-off valve of the multiple burners and adjusting the opening of the third flow regulating valve of the multiple burners so that the gas pressure in front of each burner is within a first preset pressure range includes: adjusting the opening of the first flow regulating valve to the second preset opening, opening the first on-off valve and the second on-off valve of the multiple burners; adjusting the opening of the third flow regulating valve of the multiple burners so that the gas flow of each burner is a preset flow; adjusting the opening of the third flow regulating valve of the multiple burners so that the gas pressure in front of each burner is within the first preset pressure range.

[0061] It should be noted that when adjusting the gas flow rate, the second on-off valve is opened to ensure that the gas can be fully burned and ensure safety.

[0062] In some embodiments, adjusting the opening of the third flow regulating valve of the multiple burners so that the gas flow of each burner is a preset flow includes: determining a first preset total gas flow according to the product of the corresponding number of the multiple burners and the preset flow; for the multiple burners, adjusting the opening of the third flow regulating valve of the multiple burners so that the current total gas flow of the gas pipeline is equal to the first preset total gas flow; for each burner, adjusting the opening of the third flow regulating valve of each burner in turn so that the gas flow of each burner is the preset flow.

[0063] Exemplarily, the preset flow rate is Q, and the corresponding number of the multiple burners is 16, then the first preset total gas flow rate is 16*Q=16Q.

[0064] In some embodiments, adjusting the opening of the third flow regulating valve of the multiple burners so that the current total gas flow of the gas pipeline is equal to the first preset total gas flow includes: adjusting the opening of the third flow regulating valve of the multiple burners to a first opening so that the deviation between the first current total gas flow of the gas pipeline and the first preset total gas flow is less than the preset flow deviation, that is, the total flow of the gas pipeline is close to the first preset total gas flow; determining an opening adjustment range according to the first opening; and adjusting the opening of the third flow regulating valve of the multiple burners within the opening adjustment range so that the first current total gas flow of the gas pipeline is equal to the first preset total gas flow.

[0065] In some embodiments, determining the opening adjustment range based on the first opening includes: obtaining the opening percentage, and determining the adjustable opening based on the product of the first opening and the opening percentage; determining the lower limit opening based on the difference between the first opening and the adjustable opening; determining the upper limit opening based on the sum of the first opening and the adjustable opening; and determining the opening adjustment range with the lower limit opening as the minimum value and the upper limit opening as the maximum value.

[0066] Exemplarily, the first opening is 30%, the opening percentage is 1%, the adjustment opening is 0.3%, the lower limit opening is 30%-0.3%=29.7%, the upper limit opening is 30%+0.3%=30.3%, and the opening adjustment range is 29.7%-30.3%.

[0067] In some embodiments, for each burner, sequentially adjusting the opening of the third flow regulating valve of each burner so that the gas flow of each burner is a preset flow, includes: obtaining a second target burner and a third target burner, wherein the third target burner is different from the second target burner; opening the first on-off valve and the second on-off valve of the second target burner to determine the second current total gas flow of the gas pipeline; opening the first on-off valve and the second on-off valve of the third target burner, and adjusting the third flow regulating valve of the third target burner so that the deviation between the third current total gas flow of the gas pipeline and the second current total gas flow of the gas pipeline is the preset flow. The number of the second target burners is at least one, and the number of the third target burners is one.

[0068] Exemplarily, the preset flow rate is Q, the number of the second target burners is 3, the first on-off valves of the three second target burners are opened, the second current total gas flow rate is determined to be Q1, and then one of the third target burners is opened, and the first on-off valve of the third target burner is adjusted to make the third current total gas flow rate Q2 = Q1 + Q.

[0069] In some embodiments, adjusting the opening of the third flow regulating valve of the multiple burners so that the gas pressure in front of each burner is within the first preset pressure range includes: for the multiple burners, obtaining the current gas pressures of the multiple burners, and determining whether the current gas pressures of the multiple burners are all within the first preset pressure range; if not, determining that the burner with the largest deviation between the gas pressure and the first preset pressure range is the fourth target burner, adjusting the third flow regulating valve of the fourth target burner so that the gas pressure in front of the fourth target burner is within the first preset pressure range, and returning to execute the step of obtaining the current gas pressures of the multiple burners; if so, executing the step of closing the first on-off valve and the second on-off valve of the multiple burners.

[0070] In some embodiments, the method further includes: when the current number of burners opened is greater than or equal to the preset number, determining the second preset total gas flow rate according to the product of the current number of burners opened and the preset flow rate; and adjusting the opening of the first flow regulating valve according to the flow detection result of the gas pipeline, so that the fourth current total gas flow rate of the gas pipeline is equal to the second preset total gas flow rate. When the current number of burners opened is greater than or equal to the preset number, according to the flow detection result of the gas pipeline, the gas flow rate of the gas pipeline is adjusted to the second preset total gas flow rate, that is, according to the flow detection result of the gas pipeline, the opening of the first flow regulating valve is adjusted, and when the flow detection result of the gas pipeline is the second preset total gas flow rate, the opening of the first flow regulating valve is stopped.

[0071] In some embodiments, a gas flow meter is provided on the gas pipeline for detecting the flow of the gas pipeline.

[0072] In some embodiments, the burner is provided with a distribution valve for distributing the flow of primary air and secondary air. After adjusting the opening of the first flow regulating valve to the first current opening and adjusting the opening of the second flow regulating valve to the second current opening, it also includes: obtaining the preset length and current length of the burner flame; and distributing the flow of primary air and secondary air through the distribution valve according to the size relationship between the preset length and the current length.

[0073] In some embodiments, the flow rates of the primary and secondary air are distributed through the distribution valve according to the size relationship between the preset length and the current length, including: if the current length is greater than the preset length, the flow rate of the secondary air is reduced and the flow rate of the primary air is increased through the distribution valve; if the current length is equal to the preset length, the flow rates of the primary and secondary air are kept unchanged; if the current length is less than the preset length, the flow rate of the secondary air is increased and the flow rate of the primary air is reduced through the distribution valve. The flow rates of the primary and secondary air are distributed through the distribution valve so that the flame length is maintained at the preset length, thereby reducing the accumulation of slab iron sheets caused by flame scouring the water beam, reducing the burning of the pads on the water beam, and improving the burning quality of the slab.

[0074] In some embodiments, the preset operating condition is a rated operating condition, the preset flow rate is a rated flow rate, and the first preset pressure range includes the rated pressure, so that the burner maintains rated power combustion.

[0075] In the present application, when the current number of burner openings is less than the preset number, that is, the number of burner openings is small, the first opening and the second opening are determined based on the target relationship and the current number of burner openings, the opening of the first flow regulating valve is adjusted to the first opening, and the opening of the second flow regulating valve is adjusted to the second opening, instead of adjusting the gas flow based on the detection result of the gas flowmeter, thereby reducing the risk of air-fuel ratio imbalance.

[0076] The above description is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present application shall be included in the scope of the claims of the present application.

Claims

1. A pulse heating furnace control method, characterized in that: The pulse heating furnace comprises a plurality of burners, a gas pipeline for conveying gas to the plurality of burners, and an air pipeline for conveying air to the plurality of burners, the gas pipeline is provided with a first flow regulating valve, and the air pipeline is provided with a second flow regulating valve, and the method comprises: Under the preset working condition, a target relationship representing the relationship between the number of burner openings, the opening of the first flow control valve and the opening of the second flow control valve is obtained, and the current number of burner openings is obtained; When the current burner opening number is less than a preset number, determining a first current opening required for the first flow control valve and a second current opening required for the second flow control valve according to the target relationship and the current burner opening number; The opening degree of the first flow regulating valve is adjusted to the first current opening degree, and the opening degree of the second flow regulating valve is adjusted to the second current opening degree.

2. A pulse heating furnace control method according to claim 1, characterized in that: The pulse heating furnace further includes a third flow regulating valve for regulating the gas flow of each burner, a fourth flow regulating valve for regulating the air flow of each burner, a first on-off valve for opening and closing the gas of each burner, and a second on-off valve for opening and closing the air of each burner. Under the preset working condition, obtaining a target relationship characterizing the relationship between the number of burner openings, the opening degree of the first flow regulating valve, and the opening degree of the second flow regulating valve, and obtaining the current number of burner openings, includes: Under the preset working condition, the opening of the fourth flow regulating valve of the multiple burners is adjusted to a first preset opening, the first on-off valve and the second on-off valve of the multiple burners are opened, and the opening of the third flow regulating valve of the multiple burners is adjusted so that the gas pressure before each burner is within the first preset pressure range; Close the first on-off valve and the second on-off valve of the plurality of burners to obtain a first target burner, open the first on-off valve and the second on-off valve of the first target burner, adjust the opening of the first flow control valve and the opening of the second flow control valve, and when the gas pressure in front of the first target burner is within the first preset pressure range, obtain the first target opening of the first flow control valve, and when the air pressure in front of the first target burner is within the second preset pressure range, obtain the second target opening of the second flow control valve; The target relationship is determined according to the corresponding relationship among the number of the first target burners, the first target opening, and the second target opening.

3. A pulse heating furnace control method according to claim 2, characterized in that: The method of opening the first on-off valve and the second on-off valve of the plurality of burners and adjusting the opening of the third flow regulating valve of the plurality of burners so that the gas pressure before each burner is within a first preset pressure range comprises: Adjusting the opening of the first flow regulating valve to a second preset opening, and opening the first on-off valve and the second on-off valve of the plurality of burners; Adjusting the opening of the third quantity regulating valve of the plurality of burners so that the gas flow rate of each burner is a preset flow rate; The openings of the third flow regulating valves of the plurality of burners are adjusted so that the gas pressure before each burner is within the first preset pressure range.

4. A pulse heating furnace control method according to claim 3, characterized in that: The step of adjusting the opening of the third regulating valve of the plurality of burners so that the gas flow rate of each burner is a preset flow rate includes: Determine a first preset total gas flow rate according to the product of the corresponding number of the plurality of burners and the preset flow rate; For the plurality of burners, adjusting the opening of the third flow regulating valve of the plurality of burners so that the current total gas flow of the gas pipeline is equal to the first preset total gas flow; For each burner, the opening of the third flow regulating valve of each burner is adjusted in turn so that the gas flow of each burner is a preset flow.

5. A pulse heating furnace control method according to claim 4, characterized in that: The step of adjusting the opening of the third flow regulating valve of the plurality of burners so that the current total gas flow of the gas pipeline is equal to the first preset total gas flow includes: adjusting the opening of the third flow regulating valve of the plurality of burners to a first opening so that a deviation between a first current total gas flow of the gas pipeline and the first preset total gas flow is less than a preset flow deviation; Determining an opening adjustment range according to the first opening; Within the opening adjustment range, the opening of the third flow regulating valve of the plurality of burners is adjusted so that a first current total gas flow of the gas pipeline is equal to the first preset total gas flow.

6. A pulse heating furnace control method according to claim 4, characterized in that: For each burner, sequentially adjusting the opening of the third flow regulating valve of each burner so that the gas flow of each burner is a preset flow, includes: Acquire a second target burner and a third target burner, wherein the third target burner is different from the second target burner; Opening the first on-off valve and the second on-off valve of the second target burner to determine a second current total gas flow rate of the gas pipeline; The first on-off valve and the second on-off valve of the third target burner are opened, and the third flow regulating valve of the third target burner is adjusted so that the deviation between the third current total gas flow of the gas pipeline and the second current total gas flow of the gas pipeline is the preset flow.

7. The pulse heating furnace control method according to claim 3, characterized in that: The step of adjusting the opening of the third flow regulating valve of the plurality of burners so that the gas pressure before each burner is within the first preset pressure range comprises: For the multiple burners, obtaining current gas pressures of the multiple burners, and determining whether the current gas pressures of the multiple burners are all within the preset pressure range; If not, determining that the burner with the largest deviation between the gas pressure and the preset pressure range is the fourth target burner, adjusting the third flow regulating valve of the fourth target burner so that the gas pressure before the fourth target burner is within the preset pressure range, and returning to the step of obtaining the current gas pressures of the multiple burners; If so, the step of closing the first on-off valve and the second on-off valve of the plurality of burners is performed.

8. The pulse heating furnace control method according to claim 1, characterized in that: Also includes: When the current number of burners opened is greater than or equal to the preset number, determining a second preset total gas flow rate according to the product of the current number of burners opened and the preset flow rate; According to the flow detection result of the gas pipeline, the opening of the first flow regulating valve is adjusted to make the fourth current total gas flow of the gas pipeline equal to the second preset total gas flow.

9. The pulse heating furnace control method according to claim 1, characterized in that: The burner is provided with a distribution valve for distributing the flow of primary air and secondary air. After adjusting the opening of the first flow regulating valve to the first current opening and adjusting the opening of the second flow regulating valve to the second current opening, the method further includes: Get the preset length and current length of the burner flame; According to the size relationship between the preset length and the current length, the flow rates of the primary air and the secondary air are distributed through the distribution valve.

10. A pulse heating furnace control method according to claim 9, characterized in that: The method of distributing the flow of the primary air and the secondary air through the distribution valve according to the size relationship between the preset length and the current length includes: If the current length is greater than the preset length, the flow rate of the secondary air is reduced and the flow rate of the primary air is increased through the distribution valve; If the current length is equal to the preset length, the flow rates of the primary air and the secondary air are kept unchanged; If the current length is less than the preset length, the flow rate of the secondary air is increased and the flow rate of the primary air is reduced through the distribution valve.

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