Industrial combustion control device

Abstract

The utility model discloses an industrial combustion control device, belongs to the technical field of industrial fuel gas combustion control, and solves the problems that in traditional combustion, the combustion quality judgment deviation is large, and the combustion quality is difficult to improve by purely supplying gas according to a proportion. The device comprises a fuel gas pipeline, a combustion-supporting gas pipeline, a mixing pipeline, a residual gas combustion chamber, a fuel gas flow controller, a combustion-supporting gas flow controller, an oxygen sensor and a controller. And the controller adjusts the flow of the fuel gas and the combustion-supporting gas according to the post-combustion oxygen amount data monitored by the oxygen sensor, so that the deviation between proportional gas supply and actual combustion is corrected, the combustion quality is improved, and the environmental pollution is reduced. And meanwhile, the high-precision and high-adaptability mass flow controller is utilized, the combustion quality is further improved, and the dual benefits of energy conservation and environment protection are achieved. Besides, the residual gas combustion chamber is arranged on the mixing pipeline, so that the working problem of the oxygen sensor in a high-temperature environment is solved, the application range is widened, and the device can be applied to open and non-open combustion equipment.

Description

Technical Field

[0001] The utility model relates to the technical field of combustion control, in particular to an industrial combustion control device. Background Art

[0002] In the industrial combustion process, combustion quality control is crucial to improving energy efficiency, reducing environmental pollution and ensuring stable operation of equipment.

[0003] The control of combustion quality generally requires that the combustible gas be fully burned in oxygen to avoid excessive fuel waste and the generation of toxic substances in the flue gas, so as to achieve high efficiency and environmental protection in the combustion process.

[0004] At present, the quality of flame combustion is mainly judged by observing the appearance of the flame with the naked eye and detecting the flame temperature with a thermometer, or directly supplying gas for combustion according to the ratio of fuel gas and oxygen for complete combustion (1:2).

[0005] Although visual observation of flame appearance is intuitive, it is greatly affected by subjective factors. Different people have different judgments on flame appearance, resulting in inconsistent results. Moreover, this method cannot provide quantitative data support, and it is difficult to accurately judge the combustion quality based on appearance alone.

[0006] Although the thermometer can provide flame temperature data, the flame temperature itself changes dynamically. The thermometer can only provide the temperature value at a certain moment and cannot fully reflect the temperature change of the entire combustion process, which can easily lead to deviations in the measurement results. Moreover, temperature data is only one aspect of combustion quality and cannot fully reflect other important indicators related to combustion quality, such as combustion efficiency and harmful gas emissions.

[0007] Directly supplying gas for combustion according to the ratio of gas and oxygen for complete combustion (1:2) can accurately control the supply of gas and oxygen, which meets the ideal ratio standard for complete combustion. However, in actual operation, the accuracy of this control scheme is restricted by many factors, such as differences in gas types, changes in the content of combustible components in the gas, pressure fluctuations, and variability in environmental conditions. Therefore, relying solely on a fixed ratio may lead to incomplete combustion, or waste of heat energy due to excessive air, and may even increase the emission of harmful substances. Utility Model Content

[0008] In view of the problems existing in the above-mentioned prior art, the utility model provides an industrial gas combustion control device which is less affected by external factors, has good combustion quality control effect, and is energy-saving and environmentally friendly.

[0009] The technical solution of the utility model is implemented as follows: an industrial combustion control device includes a gas pipeline, a combustion-supporting gas pipeline, a gas-combustion-supporting gas mixing pipeline, a residual gas combustion chamber, a gas flow controller, a combustion-supporting gas flow controller, an oxygen sensor, and a controller.

[0010] The gas pipeline is connected with the gas-fuel-supporting gas mixing pipeline through the gas flow controller and the three-way piece in sequence.

[0011] The fuel gas-supporting gas pipeline is connected with the fuel gas-supporting gas mixing pipeline through a fuel gas-supporting gas flow controller and a three-way piece in sequence.

[0012] The exhaust pipe of the residual gas combustion chamber is provided with an oxygen sensor, which is used to monitor the residual oxygen concentration after combustion in real time and convert the oxygen concentration into an electrical signal to be transmitted to the controller for analysis and processing by the controller.

[0013] The controller is electrically connected to the oxygen sensor, the gas flow controller and the combustion-supporting gas flow controller respectively. The controller receives the oxygen data provided by the oxygen sensor in real time and compares it with the preset oxygen data. According to the comparison result, the controller sends an adjustment instruction to the gas flow controller and the combustion-supporting gas controller to adjust the flow of the gas and the combustion-supporting gas, thereby accurately controlling the mixing ratio of the gas and the combustion-supporting gas to ensure the high efficiency, stability and environmental protection of the combustion process.

[0014] The gas flow controller and the combustion-supporting gas flow controller are mass flow controllers, which have the ability to control the gas and combustion-supporting gas flows with high precision without being affected by environmental factors. They can preset a constant flow rate, and can also adjust the output flow rate according to the data of the oxygen sensor and the preset combustion conditions to ensure that the mixing ratio of the two meets the actual complete combustion requirements.

[0015] The gas flow controller and the combustion-supporting gas flow controller are both provided with a manual adjustment needle valve in parallel, which can be used to control the flow of gas and air by manually adjusting the needle valve when the flow controller fails, thereby ensuring the normal operation of the combustion control device.

[0016] A pressure gauge is provided at the front end of the gas-assisted-combustion-fuel mixture pipeline to monitor whether the pressure of the gas-assisted-combustion-fuel mixture is normal.

[0017] The gas pipeline is provided with a pressure reducing valve for stabilizing the gas pressure. The inlet and outlet of the pressure reducing valve are both provided with pressure gauges for visually monitoring whether the gas pressure is normal.

[0018] The front ends of the gas flow controller and the combustion-supporting gas flow controller are both provided with solenoid valves, which are electrically connected to the controller and are used to control the start and shut down operations of the combustion system to enhance the safety and reliability of the system.

[0019] The air inlet end of the combustion-supporting gas pipeline is provided with two joints (filter and pressure reducing valve) for providing clean, dry and stable combustion-supporting gas to ensure that the flow controller and the oxygen sensor can operate with high quality.

[0020] The gas pipeline and the combustion-aiding gas pipeline are both provided with valves at the gas inlet ends for controlling the on and off of the gas and the combustion-aiding gas, preventing gas leakage and ensuring the safety of the entire pipeline.

[0021] The end of the gas-fuel-supporting gas mixing pipeline leads to an open combustion device, such as a flame spray gun.

[0022] The end of the gas-assisted combustion gas mixing pipeline leads to a non-open combustion device, such as a boiler.

[0023] The gas-assisted-gas mixing pipeline is provided with a branch pipeline, and the branch pipeline leads to a combustion studio, such as a boiler. The combustion studio exhaust pipe is provided with an oxygen analyzer or an oxygen sensor, and the output end of the oxygen sensor is electrically connected to the controller.

[0024] The inlet gas of the combustion-supporting gas pipeline is air or pure oxygen.

[0025] Compared with the prior art, the beneficial effects of the utility model are:

[0026] (1) The device detects the oxygen volume data after combustion, which is the most representative indicator of combustion quality, as the basis for adjusting the ratio of gas and combustion-supporting gas flow. The controller adjusts the gas and combustion-supporting gas flow in real time, effectively correcting the deviation between the gas and combustion-supporting gas ratio supply and actual combustion, ensuring that the output gas and combustion-supporting gas flow ratio can be closer to the ideal complete combustion state. This overcomes the problem of incomplete gas combustion caused by factors such as gas quality and environmental changes when the fixed ratio output is used.

[0027] (2) The use of high-precision and highly adaptable mass flow controllers enables the gas and combustion-supporting gas that need to be compensated to be accurately adjusted, ensuring that the output gas and combustion-supporting gas flow rates can match the actual combustion requirements. Even if there are slight changes in the combustion process, they can be responded to in a timely and accurate manner, which not only ensures the stability and reliability of combustion, but also further improves the combustion quality.

[0028] (3) By optimizing combustion efficiency and achieving high-precision flow control, the device significantly reduces harmful gas emissions generated by incomplete combustion and reduces energy waste. This not only helps reduce environmental pollution, but also reduces operating costs, achieving the dual benefits of energy conservation and environmental protection.

[0029] (4) The combustion quality sampling point (residual gas combustion chamber) is set on the gas-fuel gas mixing pipeline, which solves the problem of high temperature and difficult sampling of oxygen sensors in open combustion equipment (flame spray gun). At the same time, this setting principle is also applicable to non-open combustion equipment (boiler), and the boiler exhaust pipe oxygen sensor can be omitted, reducing costs, which can be said to kill three birds with one stone.

[0030] (5) Adding branch pipelines to the gas-assisted gas mixing pipeline facilitates the connection with the combustion chamber with the oxygen analyzer. It is flexible and expands the scope of use, which is conducive to the transformation of the original equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic structural diagram of an embodiment of the utility model.

[0032] Figure 2 A schematic diagram of a control system according to an embodiment of the utility model;

[0033] Markings in the figure: 1. Residual gas combustion chamber; 2. Oxygen sensor; 3. Gas and combustion-supporting gas mixing pipeline; 4. Pressure gauge; 5. Gas flow controller; 6. Combustion-supporting gas flow controller; 7. Manual adjustment needle valve; 8. Solenoid valve; 9. Pressure reducing valve; 10. Two-piece; 11. Combustion-supporting gas pipeline; 12. Gas pipeline. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present utility model are clearly and completely described below in conjunction with the accompanying drawings.

[0035] Embodiment 1:

[0036] like Figure 1 , Figure 2 As shown, an industrial combustion quality control device includes: a gas pipeline 12, a combustion-supporting gas pipeline 11, a gas-combustion-supporting gas mixing pipeline 3, a residual gas combustion chamber 1, a gas flow controller 5, a combustion-supporting gas flow controller 6, an oxygen sensor 2 and a controller.

[0037] The gas pipeline 12 is used to supply gas to the combustion equipment. After the gas is controlled by the valve, the flow rate is precisely adjusted by the flow controller 5, and then connected to the gas-fuel-combustion gas mixing pipeline 3 through the tee.

[0038] The gas flow controller 5 is used to accurately control the flow of gas in the gas pipeline 12. It receives instructions and data from the controller and automatically adjusts the flow of gas according to these instructions and data to ensure a stable and accurate supply of gas and match the flow of the auxiliary gas, thereby achieving efficient combustion.

[0039] The combustion gas pipeline 11 is used to supply combustion gas (such as air or oxygen) to the combustion equipment. The combustion gas is also connected to the gas-combustion gas mixing pipeline 3 through a tee after being adjusted by a valve and a combustion gas flow control.

[0040] The combustion-supporting gas flow controller 6 is used to accurately control the flow of the combustion-supporting gas in the combustion-supporting gas pipeline 11. Similar to the gas flow controller 5, it automatically adjusts the flow of the combustion-supporting gas according to the instructions and data of the controller to ensure that the flow ratio of the combustion-supporting gas to the gas reaches a preset optimal value, thereby optimizing the combustion process.

[0041] The gas-fuel-supporting gas mixing pipeline 3 is used to mix the gas and the fuel-supporting gas to form a combustible mixed gas, which is then transported to a combustion device (such as a flamethrower or a boiler). A branch pipe is provided on the mixing pipeline 3 to connect to the residual gas combustion chamber 1.

[0042] Residual gas combustion chamber 1: arranged on the branch pipeline at the outlet end of the gas-fuel mixture pipeline 3, used to simulate the actual combustion environment, provide combustion residual gas, so that the oxygen sensor 2 can measure the residual gas oxygen content that is closer to the actual combustion situation.

[0043] Oxygen analyzer 2: installed on the exhaust pipe of the residual gas combustion chamber, used to monitor the oxygen content in the residual gas after combustion in real time and transmit the data to the controller.

[0044] The controller, as the core of the entire combustion control device, is electrically connected to the oxygen sensor 2, the gas flow controller 5 and the combustion-supporting gas flow controller 6. The controller receives the oxygen content data transmitted by the oxygen sensor 2 in real time, and compares and analyzes it with the preset optimal combustion oxygen content data. According to the comparison results, the controller calculates the required adjustment amount and sends these differences as feedback to the gas flow controller 5 and the combustion-supporting gas flow controller 6 to adjust and compensate the flow of the gas and the combustion-supporting gas to ensure that the mixing ratio of the two reaches the optimal state of actual complete combustion. In addition, the controller is also responsible for controlling other components of the entire device, such as the switch of the solenoid valve 9 and the adjustment of the flow rate.

[0045] Compared with combustion control devices that use fixed ratios to control the flow rates of gas and combustion-supporting gases, this closed-loop control system that dynamically adjusts the flow rates of gas and combustion-supporting gases based on real-time sampling of the oxygen content in the residual combustion gas can more accurately reduce the deviation between the preset value and the actual value of the combustion quality, significantly improving the combustion quality.

[0046] The advantages of setting up a residual gas combustion chamber are:

[0047] (1) Avoid high temperature environment: The residual gas combustion chamber is located on the gas-fuel mixture pipeline, and is kept at a certain distance from open combustion equipment such as flame guns, effectively preventing the oxygen sensor from being directly exposed to high temperature flames. This design ensures that the oxygen sensor can work within a safe temperature range and prolongs its service life.

[0048] (2) Simulate the actual combustion environment: The combustion chamber receives the combustible mixed gas flowing out of the mixing pipeline, simulating the actual combustion environment of the combustion equipment. This enables the oxygen sensor to measure the oxygen content closer to the actual combustion situation, providing more accurate data support for combustion control and helping to optimize the combustion process.

[0049] (3) High safety: Since the combustion chamber is kept at a certain distance from open combustion equipment such as flame guns, the safety risks such as high temperature and high flow rate that may be encountered during direct sampling are avoided. This not only ensures the safety of operators, but also reduces the risk of equipment damage.

[0050] (4) Wide range of applications: This sampling method is suitable for various types of combustion equipment such as flame guns, boilers, and combustion furnaces.

[0051] (5) High flexibility: By setting the residual gas combustion chamber as a sampling point, the combustion parameters and monitoring scheme can be flexibly adjusted according to actual needs. This flexibility enables the combustion system to adapt to the needs of different equipment and different processes, improving the adaptability and reliability of the system.

[0052] In summary, setting the residual gas combustion chamber as the sampling point for the residual oxygen content detection and control system after combustion has the advantages of avoiding high temperature environment, simulating the actual combustion environment, high safety, wide application range and high flexibility. This design not only ensures the safety and accurate sampling of the oxygen sensor, but also provides reliable data support for combustion control. It is an efficient and reliable combustion control strategy.

[0053] Embodiment 2:

[0054] In this embodiment, the gas-fuel gas mixing pipeline 3 is provided with a branch pipeline, which leads to the combustion chamber (such as a boiler). The combustion chamber exhaust pipe is provided with an oxygen sensor for real-time monitoring of the oxygen content in the exhaust gas generated during the combustion process. The output end of the oxygen sensor is connected to the input end of the controller, and the controller adjusts the output flow ratio of the gas flow controller 5 and the auxiliary gas flow controller 5 in real time according to the oxygen content data detected by the oxygen sensor.

[0055] Since the residual oxygen content after combustion is directly sampled and tested at the exhaust pipe of the combustion equipment, the actual combustion quality can be more accurately reflected, so that the mixing ratio of the fuel gas and the auxiliary fuel gas can be adjusted to meet the requirements of complete combustion, which helps to further reduce energy waste, improve combustion quality and efficiency, reduce maintenance costs, and meet environmental protection requirements. Therefore, the scope of use of the device is expanded and the overall utilization rate is improved.

[0056] Embodiment 3:

[0057] In this embodiment, the gas flow controller 5 and the combustion-supporting gas flow controller 6 are both provided with a manual adjustment needle valve 7 in parallel. As a backup adjustment means, they are provided to cope with possible failures and maintenance needs of the flow controller. When the flow controller fails or requires maintenance, the operator can manually adjust the needle valve to set and control the flow of the gas and combustion-supporting gas, ensuring that the combustion control device can operate normally and maintaining the stability and safety of the combustion process. The reliability and flexibility of the entire combustion system are improved.

[0058] Embodiment 4:

[0059] In this embodiment, in order to obtain clean, dry and stable fuel gas and ensure the normal operation of the oxygen sensor 2 and the flow controller, a two-piece (filter and pressure reducing valve) is installed at the inlet of the combustion-supporting gas pipeline 11, wherein the pressure reducing valve is used to stabilize the gas source to ensure that the gas source is in a constant state, thereby reducing damage to the valve or flow controller due to sudden changes in the gas source pressure. The filter is used to clean the gas source, filter moisture and impurities in the air, and prevent them from entering the device with the gas, thereby ensuring that the intake quality meets the requirements and ensuring the precision and accuracy of the measurement of the oxygen sensor 2.

[0060] Compared with the three-piece (filter, pressure reducing valve, oil mist collector) used in the conventional flow controller combustion device, the advantage of using a two-piece in this device is that when the combustion-supporting gas is pure oxygen, the oil mist collector in the three-piece may react with the pure oxygen, causing system pollution or damage, thereby reducing the sensitivity of the oxygen sensor and affecting the measurement accuracy. However, this device only uses a filter and a pressure reducing valve, which effectively avoids these problems and ensures that the pure oxygen entering the system is pure and the pressure (flow) is stable. In this way, the oxygen collected by the oxygen sensor 2 is purer and the detection accuracy is higher, ensuring the stable and reliable performance of the entire system.

[0061] Embodiment 5:

[0062] In this embodiment, the gas flow controller and the combustion-supporting gas flow controller are mass flow controllers, which have the ability to control the gas and combustion-supporting gas flow rates with high precision without being affected by environmental factors, and are used to control the gas flow rates and combustion-supporting gas flow rates with high precision to ensure that the mixing ratio of the two meets the actual complete combustion requirements, thereby improving combustion efficiency and reducing environmental pollution. It can preset a constant flow rate, and can also automatically adjust the opening of the built-in valve according to the data of the oxygen analyzer and the preset combustion conditions to control the mixing ratio of the gas and combustion-supporting gas.

[0063] Example 6

[0064] In this embodiment, a pressure reducing valve 9 is provided at the front end of the gas pipeline to stabilize the gas pressure and reduce the influence of pressure fluctuations on the measurement accuracy of the oxygen sensor 2, the gas flow controller and the flow rate of the auxiliary gas.

[0065] A stable combustion process is the basis for the oxygen sensor to obtain accurate oxygen content data. Under stable combustion conditions, the fuel gas and the combustion-supporting gas can be fully mixed and burned, and the oxygen content in the generated exhaust gas is relatively stable. The oxygen sensor can indirectly infer the combustion efficiency by measuring the oxygen content in the exhaust gas. Therefore, the pressure reducing valve indirectly improves the measurement accuracy of the oxygen sensor by stabilizing the fuel gas pressure.

[0066] At the same time, pressure gauges 4 are provided at the inlet and outlet of the pressure reducing valve 9. These pressure gauges can display the pressure value in the gas pipeline in real time, so that the operator can understand the system operation status at any time, discover problems in time, and take measures in time to ensure the safe and stable operation of the overall system.

[0067] Example 7

[0068] The gas pipeline and the auxiliary gas pipeline are both provided with valves at the air inlet ends, which not only have important functions such as controlling gas flow (ensuring the stability and efficiency of the combustion process, and preventing incomplete combustion or low combustion efficiency due to excessive or insufficient gas flow), cutting off gas circulation (in emergency situations) and preventing gas accumulation (reducing the risk of explosion and fire), but also ensuring the normal operation and safety of the oxygen sensor and flow controller.

[0069] Example 8

[0070] In this embodiment, a pressure gauge 4 is provided at the front end of the gas-air mixture pipe to monitor and observe the pressure of the mixed gas, ensure the stability and safety of the combustion system, and thus improve the performance and efficiency of the system. This setting has a positive impact on the oxygen sensor 2 and the flow controller, which can improve their measurement accuracy and control accuracy, and also help to improve the safety and reliability of the entire system. The pressure gauge 4 can intuitively display the pressure value, helping the operator to quickly determine whether the pressure is normal, so as to take corresponding measures to adjust or maintain it, and prevent equipment damage or accidents. In addition, a stable pressure environment is beneficial to improving combustion efficiency, reducing energy consumption and pollutant emissions.

[0071] Example 9

[0072] In this embodiment, the front ends of the gas flow controller 5 and the combustion-supporting gas flow controller 6 are both provided with solenoid valves 8, which are electrically connected to the controller to form an intelligent and safe gas control system. First, before the system is started, the solenoid valve 8 will remain closed to prevent the gas and combustion-supporting gas from entering the combustion chamber when the system is not fully prepared, causing potential safety hazards. When all conditions are met, the controller will issue a command to open the solenoid valve 8, allowing the gas and combustion-supporting gas to enter the combustion system and perform ignition operations, effectively avoiding the risk of air explosion caused by lack of gas in the pipeline, and greatly improving the safety of ignition. At the same time, the flow controller and the oxygen sensor also begin to accurately control and measure the flow in a stable environment. When the system is operating normally, the solenoid valve 8 will remain open to ensure that the gas and combustion-supporting gas can smoothly enter the combustion chamber and support the normal progress of the combustion process.

[0073] When the solenoid valve is an adjustable solenoid valve, it can also assist the flow controller to control the flow of gas and combustion-supporting gas, ensuring that the gas and combustion-supporting gas can smoothly enter the mixing pipeline at a preset ratio and speed before the flow controller works, thereby providing a guarantee for subsequent stable combustion.

[0074] The principle of this combustion control device

[0075] Combining "detecting the oxygen content in the remaining gas after combustion to determine the combustion quality" with "controlling the mixing ratio of gas and air through a flow controller to achieve full combustion of the gas" will form an efficient and accurate combustion control system.

[0076] 1. Combination Principle

[0077] 1. Real-time oxygen content detection:

[0078] A high-precision oxygen sensor is installed at the exhaust port of the combustion equipment to monitor the oxygen content in the residual gas after combustion in real time. This data will directly reflect the oxygen consumption during the combustion process.

[0079] 2. Flow controller adjustment:

[0080] Based on the real-time oxygen content data, the flow controller will dynamically adjust the mixture ratio of gas and air. If the oxygen content is too high, it means there is excess air or incomplete combustion. At this time, the flow controller will reduce the air flow or increase the gas flow; conversely, if the oxygen content is too low, the flow controller will increase the air flow or reduce the gas flow.

[0081] 3. Feedback loop:

[0082] The entire combustion control system forms a closed-loop feedback mechanism. The oxygen sensor transmits the detected oxygen content data to the control system in real time. The control system determines the combustion quality according to the preset algorithm and threshold, and sends instructions to the flow controller to adjust the mixing ratio of gas and air. The adjusted mixing ratio will directly affect the oxygen content of the next combustion process, forming a continuous optimization cycle.

[0083] 2. Advantages and complementarity

[0084] 1. Real-time and accuracy:

[0085] By detecting the oxygen content in real time, the control system can immediately sense the changes in combustion quality and quickly make adjustments through the flow controller. This method improves the real-time and accuracy of control, ensuring that the combustion process is always maintained in the best state.

[0086] 2. Dynamic adjustment capability:

[0087] The flow controller can dynamically adjust the mixing ratio of gas and combustion-supporting gas based on real-time data to adapt to changes in factors such as different gas components, combustion-supporting gas flow rates, and combustion chamber designs. This dynamic adjustment capability makes the control system more flexible and reliable.

[0088] 3. Complementarity:

[0089] Oxygen content detection provides the control system with an indicator that directly reflects the combustion quality, while the flow controller provides an effective means to adjust the combustion conditions. The combination of the two gives full play to their respective advantages and complements each other's deficiencies, thus achieving more accurate and stable combustion quality control.

[0090] Through this method, combustion efficiency can be effectively improved, pollutant emissions can be reduced, and the service life of combustion equipment can be extended.

Claims

1. An industrial combustion control device, characterized in that: include: A gas pipeline (12), a combustion-supporting gas pipeline (11), a gas-combustion-supporting gas mixing pipeline (3), a residual gas combustion chamber (1), a gas flow controller (5), a combustion-supporting gas flow controller (6), an oxygen sensor (2) and a controller; The gas pipeline (12) is connected to the gas-fuel-supporting gas mixing pipeline (3) in sequence through the gas flow controller (5) and the three-way piece; The combustion-supporting gas pipeline (11) is connected to the combustion-supporting gas mixing pipeline (3) via the combustion-supporting gas flow controller (6) and the three-way piece in sequence; The exhaust pipe of the residual gas combustion chamber (1) is provided with an oxygen sensor (2); The controller is electrically connected to the oxygen sensor (2), the fuel gas flow controller (5) and the auxiliary fuel gas flow controller (6) respectively.

2. The industrial combustion control device according to claim 1, characterized in that: The fuel gas flow controller (5) and the auxiliary fuel gas flow controller (6) are mass flow controllers.

3. The industrial combustion control device according to claim 1, characterized in that: The gas flow controller (5) and the auxiliary gas flow controller (6) are both connected in parallel with a manual regulating needle valve (7).

4. The industrial combustion control device according to claim 1, characterized in that: A pressure gauge (4) is provided at the front end of the gas-fuel-supporting gas mixing pipeline (3).

5. The industrial combustion control device according to claim 1, characterized in that: The gas pipeline (12) is provided with a pressure reducing valve (9), and the inlet and outlet of the pressure reducing valve (9) are both provided with pressure gauges.

6. The industrial combustion control device according to claim 1, characterized in that: The front end pipelines of the gas flow controller (5) and the auxiliary gas flow controller (6) are both provided with solenoid valves (8), and the solenoid valves (8) are electrically connected to the controllers.

7. The industrial combustion control device according to claim 1, characterized in that: The gas inlet end of the combustion-supporting gas pipeline (11) is provided with a double joint (10).

8. The industrial combustion control device according to claim 1, characterized in that: The gas inlet ends of the gas pipeline (12) and the combustion-aiding gas pipeline (11) are both provided with valves.

9. The industrial combustion control device according to any one of claims 1 to 8, characterized in that: The gas-fuel-assisted gas mixing pipeline (3) is provided with a branch pipeline, the branch pipeline leads to the combustion studio, the combustion studio exhaust pipe is provided with an oxygen analyzer, and the output end of the oxygen analyzer is electrically connected to the controller.

10. The industrial combustion control device according to any one of claims 1 to 8, characterized in that: The inlet gas of the combustion-supporting gas pipeline (11) is air or oxygen.

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