Wall type tangential combustion method and system for combusting inferior coal

Abstract

The invention belongs to the field of wall type tangential combustion, and discloses a wall type tangential combustion method and system for combusting inferior coal, which can automatically adjust the gas amount and the air door opening by monitoring the pressure, the oxygen content and the gas flow in a hearth in real time. The accurate adjustment can ensure the optimal mixing proportion of the gas and the air, gas waste is avoided, the combustion efficiency is improved, and therefore the heat efficiency of the boiler is improved. The flame state information is continuously collected, the gas amount is adjusted in combination with flame stability, it is guaranteed that the combustion process is always in the optimal state, unburnt fuel and excessive discharged waste gas are reduced, and therefore the overall heat efficiency is improved. The combustion process is monitored in real time through the air pressure switch, the gas flow sensor, the flame ionization electrode and the like, and the gas amount and the air door opening degree are dynamically adjusted according to feedback signals. The automatic adjusting function can ensure that combustion is always in a stable and efficient state, and excessive or insufficient gas supply is avoided.

Description

Technical Field

[0001] The invention belongs to the field of wall-type tangential circle combustion, and in particular relates to a wall-type tangential circle combustion method and system for burning inferior coal. Background Art

[0002] Wall-type tangential circular combustion is a device that uses liquid or gaseous fuel to generate a stable flame to heat the air, thereby generating heat. The working principle of the wall burner is to use a certain fuel supply and air conditioning mechanism to make the fuel fully burn in the combustion chamber to generate heat, and then the heat transfer surface transfers the heat to the surrounding air, thereby achieving the purpose of heating.

[0003] The wall-type tangential combustion system and working method currently on the market that burns inferior coal have weak penetration and stability of the combustion flame during use, poor air supply conditions make it difficult for the flame to burn fully, and the flame is difficult to evenly fill the entire furnace. Local overheating and overcooling often occur, and the smoke temperature deviation is large, making it difficult to improve the overall thermal efficiency of the boiler, making it inconvenient to use. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcoming of low overall thermal efficiency of boilers and to provide a wall-type tangential circle combustion method and system for burning inferior coal.

[0005] In order to achieve the above object, the present invention adopts the following technical solution: In a first aspect, the present invention provides a wall-type tangential circle combustion method using low-quality coal, comprising the following steps: Carry out self-inspection on the wall-type tangential combustion system burning inferior coal, including system hardware self-inspection, safety limit switch self-inspection and servo motor self-inspection. After the self-inspection passes, calibrate the sensors in the wall-type tangential combustion system burning inferior coal; After the sensor is calibrated, the servo motor is started, and the air pressure switch is used to monitor the air pressure in real time, and the gas in the chamber is purged to completely discharge the gas in the chamber; After the purge is completed, the gas is turned on to ignite in the chamber and the flame status is continuously collected; The gas volume and air door opening are controlled according to the pressure, oxygen content and gas flow in the furnace.

[0006] A further improvement of the present invention is that a self-check is performed on the wall-type tangential combustion system burning inferior coal, and the self-check includes a system hardware self-check, a safety limit switch self-check and a servo motor self-check. After the self-check passes, the specific method for calibrating the sensor in the wall-type tangential combustion system burning inferior coal is as follows: After starting the power supply, the wall-type tangential circle combustion system burning inferior coal shall be self-checked to check whether the hardware of the wall-type tangential circle combustion system burning inferior coal is working properly; Conduct self-checks on the safety limit switches of wall-type tangential combustion systems burning low-quality coal to ensure that all safety limit switches are open; Conduct self-checks on the servo motors of the wall-type tangential combustion system burning low-quality coal to ensure that all servo motors are not started; After the system hardware self-test, safety limit switch self-test and servo motor self-test are passed, the sensors in the wall-type tangential circle combustion system burning low-quality coal are calibrated.

[0007] A further improvement of the present invention is that after the sensor is calibrated, the servo motor is started, and the air pressure switch is combined to monitor the air pressure in real time to purge the gas in the chamber. The specific method for completely discharging the gas in the chamber is as follows: After the sensor is calibrated, the servo motor is started according to the preset time, driving the air door to the high-fire opening state and starting to supply air; The air pressure switch monitors the air pressure in real time and adjusts the air door opening in real time to ensure that the air pressure remains within the predetermined range; After the preset time is reached, the servo motor and the damper are closed.

[0008] A further improvement of the present invention is that when the gas is turned on for ignition in the chamber, after the air damper reaches the ignition opening, the ignition transformer is started, the gas begins to be released, and the ionization electrode is used to detect whether the flame is successfully ignited. Within 2 seconds, if a flame is detected, the system will continue to run and enter the normal combustion stage; if no flame is detected, the system will lock and close the solenoid valve, stop the gas supply and trigger the alarm mechanism.

[0009] A further improvement of the present invention is that the flame state is continuously collected and the flame state is fed back in real time through the ionization electrode. If the flame is extinguished or offset, the gas flow rate and the air door opening are controlled and adjusted, or a backup ignition device is started.

[0010] A further improvement of the present invention is that the specific method of controlling the gas volume and the air door opening according to the pressure, oxygen content and gas flow rate in the furnace is as follows: Determine the furnace load based on the pressure, oxygen content and gas flow rate in the furnace; Compare the furnace load with the preset threshold range. When the furnace load is higher than the maximum value of the preset threshold range, it is a high load stage, and the gas volume is increased and the air door opening is increased; When the furnace load is lower than the minimum value of the preset threshold range, it is a low load stage, and the gas volume is reduced and the large air door opening is reduced; When the furnace load is between the minimum and maximum values ​​of the preset threshold range, no adjustment is made.

[0011] A further improvement of the present invention is that when the pressure, oxygen content and gas flow rate in the furnace control the gas volume and the air door opening, the ionization electrode continuously monitors the state of the flame to ensure flame stability.

[0012] In a second aspect, the present invention provides a wall-type tangential circle combustion system for burning low-quality coal, comprising: A self-check module is used to perform self-check on the wall-type tangential combustion system burning inferior coal. The self-check includes system hardware self-check, safety limit switch self-check and servo motor self-check. After the self-check passes, the sensors in the wall-type tangential combustion system burning inferior coal are calibrated; The purge module is used to start the servo motor after the sensor is calibrated, and to monitor the air pressure in real time in combination with the air pressure switch to purge the gas in the chamber so that the gas in the chamber is completely discharged; The ignition module is used to start the gas to ignite the chamber after the purge is completed, and continuously collect the flame status; The adjustment module is used to control the gas volume and the air door opening according to the pressure, oxygen content and gas flow in the furnace.

[0013] In a third aspect, the present invention provides an electronic device including a memory and a processor, wherein the memory stores a computer program, and the processor implements the steps of a wall-type cut-circle combustion method using inferior coal when executing the computer program.

[0014] In a fourth aspect, the present invention provides a storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, the steps of a wall-type cut-circle combustion method using low-quality coal are implemented.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention can automatically adjust the gas volume and damper opening by real-time monitoring of the pressure, oxygen content and gas flow in the furnace. This precise adjustment can ensure the optimal mixing ratio of gas and air, avoid gas waste, improve combustion efficiency, and thus improve the thermal efficiency of the boiler. The present invention continuously collects flame state information and adjusts the gas volume in combination with flame stability to ensure that the combustion process is always in the best state, reduce unburned fuel and excessive exhaust gas, and thus improve the overall thermal efficiency. The present invention monitors the combustion process in real time through air pressure switches, gas flow sensors, flame ionization electrodes, etc., and dynamically adjusts the gas volume and damper opening according to feedback signals. This automatic adjustment function can ensure that the combustion is always in a stable and efficient state, avoids excessive or insufficient gas supply, and thus improves thermal efficiency. By continuously monitoring the flame state, the system can promptly detect the situation of flame extinguishment or instability, and automatically adjust the gas flow and damper opening to ensure the stability of the flame, avoid the phenomenon of incomplete combustion, and further improve the combustion efficiency. The present invention performs self-tests before starting, including hardware self-tests, safety limit switch self-tests, and servo motor self-tests, to ensure that the equipment operates normally and without faults. At the same time, sensor calibration ensures that all monitoring equipment is accurate, thereby avoiding incomplete combustion or system failure caused by sensor failure. The present invention ensures flame stability by continuously collecting flame status and monitoring various combustion parameters. If the flame is extinguished or abnormal, the system will automatically adjust the gas flow rate or trigger the alarm mechanism immediately to effectively avoid safety hazards. In summary, the present invention can effectively improve combustion efficiency, reduce fuel waste, and improve thermal efficiency by accurately controlling multiple links such as gas flow, damper opening, flame monitoring and load regulation. At the same time, it can also reduce emissions and improve system safety. Especially when using inferior coal, this method can give full play to the thermal energy of inferior coal, overcome the low efficiency of traditional combustion methods, and improve the overall thermal efficiency of the boiler. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a flow chart of the present invention; Figure 2 is a system diagram of the present invention; Figure 3 is a schematic diagram of Example 1; Figure 4 is a schematic diagram of Example 2; Figure 5 is a schematic diagram of Example 3; Figure 6 It is a schematic diagram of Example 4; Figure 7 is a schematic diagram of Example 5; DETAILED DESCRIPTION In order to further understand the content of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the embodiments are only for explaining the present invention and are not intended to limit it.

[0017] See also Figure 1 A wall-type tangential circle combustion method using low-quality coal comprises the following steps: S1, perform self-inspection on the wall-type tangential combustion system burning inferior coal, including system hardware self-inspection, safety limit switch self-inspection and servo motor self-inspection. After the self-inspection passes, calibrate the sensors in the wall-type tangential combustion system burning inferior coal.

[0018] S2, after the sensor is calibrated, start the servo motor, and use the air pressure switch to monitor the air pressure in real time to purge the gas in the chamber so that the gas in the chamber is completely discharged.

[0019] S3, after the purge is completed, the gas is turned on to ignite in the chamber and the flame status is continuously collected.

[0020] S3, controls the gas volume and air door opening according to the pressure, oxygen content and gas flow rate in the furnace.

[0021] See also Figure 2 , a wall-type tangential-circle combustion system for burning low-quality coal, comprising: A self-check module is used to perform self-check on the wall-type tangential combustion system burning inferior coal. The self-check includes system hardware self-check, safety limit switch self-check and servo motor self-check. After the self-check passes, the sensors in the wall-type tangential combustion system burning inferior coal are calibrated; The purge module is used to start the servo motor after the sensor is calibrated, and to monitor the air pressure in real time in combination with the air pressure switch to purge the gas in the chamber so that the gas in the chamber is completely discharged; The ignition module is used to start the gas to ignite the chamber after the purge is completed, and continuously collect the flame status; The adjustment module is used to control the gas volume and the air door opening according to the pressure, oxygen content and gas flow in the furnace.

[0022] Embodiment 1: See also Figure 3 , the wall-type tangential combustion system burning inferior coal is self-checked, including system hardware self-check, safety limit switch self-check and servo motor self-check. After the self-check is passed, the specific method for calibrating the sensors in the wall-type tangential combustion system burning inferior coal is as follows: After the program controller is powered on, it first performs an internal program self-check to ensure that each component (such as servo motor, solenoid valve, sensor, etc.) functions normally. The diagnostic program checks whether the hardware and signal input and output meet the predetermined requirements to ensure that there are no faults.

[0023] Self-check the safety limit switches, including thermostats, high / low gas pressure switches, steam boiler steam pressure switches, etc. Only when these safety switches are in the permitted state will the next stage be entered. This step ensures that the system operates within the preset safety range to prevent safety hazards such as excessive gas or excessive steam pressure.

[0024] For the servo motor self-inspection, during the preparation stage, the servo motor is prohibited from starting in advance, and the program controller is used to prevent the damper from opening accidentally to avoid wasting energy or damaging the equipment.

[0025] The system calibrates key sensors (such as air pressure sensor, flame ionization electrode, gas flow meter, etc.) to ensure that they can provide accurate real-time data in the subsequent stages. This process is the basis for ensuring combustion efficiency and safety.

[0026] This embodiment is the basis of the entire wall-type tangential combustion system for burning low-quality coal. It ensures that the system is in a safe and stable state before startup to prevent failures or safety hazards in subsequent operations. The core tasks of this stage are self-checking, limiting condition confirmation, hardware preparation and system calibration, laying the foundation for the subsequent pre-purge, ignition and normal combustion stages.

[0027] Embodiment 2: See also Figure 4 After the sensor is calibrated, start the servo motor, combine with the air pressure switch to monitor the air pressure in real time, purge the gas in the chamber, and make the gas in the chamber completely discharged. The specific method is as follows: After the preparation phase is completed, the system starts the fan motor and drives the damper to the high fire opening state. At this time, the fan starts to supply air to discharge the residual gas in the furnace, ensuring good air flow inside the furnace and burner, and providing sufficient oxygen for subsequent ignition.

[0028] The system monitors the air pressure in the furnace and air duct in real time through the air pressure switch, and adjusts the air door opening as needed to ensure that the air pressure is maintained within the normal working range. If the air pressure is too low, the system increases the air supply by increasing the fan speed or adjusting the air door opening to ensure sufficient oxygen supply during the combustion process.

[0029] The pre-purge phase is usually set for a certain duration (e.g. 30 seconds to 1 minute) to completely remove residual gas from the combustion chamber and reduce the risk of flammable gas accumulation. At this time, the system will continue to circulate air to ensure that the combustion environment meets safety standards.

[0030] During this phase, the system checks the entire combustion system for leaks or uneven air flow through air pressure switches and other safety devices to ensure that no danger will occur.

[0031] This embodiment is a crucial step in the wall-type tangential combustion system that burns low-quality coal. Its main task is to clean the gas inside the system, ensure smooth air circulation in the system, and provide safe and stable conditions for the ignition stage. In this stage, the air is controlled, the damper is adjusted, and the air pressure is monitored to ensure that the air flows at an appropriate pressure, thereby preventing the system from generating safety hazards due to incomplete gas discharge.

[0032] Embodiment 3: See also Figure 5 After the purge is completed, the specific method of starting the gas to ignite in the chamber and continuously collecting the flame status is as follows: After the pre-purge stage is completed, the system starts the ignition transformer and outputs a high-voltage electric spark. The ignition electrode ignites the mixture of gas and air through the electric spark. The high-voltage output of the ignition transformer needs to be precisely controlled to ensure that the gas in the furnace can be ignited.

[0033] The gas starts to flow to the combustion head and mixes with the air entering the burner. The mixed gas needs to be adjusted in an appropriate ratio to ensure that the gas and air can be ignited smoothly and achieve a good combustion effect. Too much or too little gas will affect the ignition success rate.

[0034] After ignition, the system detects whether the flame is successfully ignited through the ionization electrode. If the flame is detected by the ionization electrode within 2 seconds after ignition, the program controller will continue to execute the subsequent combustion process; if the flame is not detected, the program controller will immediately take emergency measures, lock the system and close the gas valve, stop the gas supply and trigger the alarm.

[0035] Even if the ignition is successful, the system still needs to monitor the stability of the flame in real time. If the flame goes out or becomes unstable, the ionization electrode will feedback an abnormal signal, and the program controller will automatically adjust the gas flow, air door opening or start the backup ignition device to ensure flame stability.

[0036] If ignition fails (i.e. flame is not detected within 2 seconds), the system will automatically cut off the gas supply to prevent safety risks caused by gas leakage. At the same time, the program controller will trigger the alarm system to prompt the operator to check the cause of the problem.

[0037] This embodiment is a key link in the wall-type tangential combustion system burning inferior coal, which determines whether the combustion process can start smoothly. This stage ensures successful ignition and lays the foundation for the normal combustion stage by accurately controlling the ignition transformer, the mixing of gas and air, and flame monitoring. The ignition stage requires not only ignition of gas, but also real-time monitoring of the stability of the flame to ensure the safety and reliability of system operation.

[0038] Embodiment 4: See also Figure 6 The specific method of controlling the gas volume and the air door opening according to the pressure, oxygen content and gas flow in the furnace is as follows: After successful ignition, the system will automatically adjust the gas volume according to the air pressure in the furnace, the furnace back pressure and the gas flow rate. The program controller calculates and adjusts in real time based on these parameters to ensure the best mixing ratio of gas and air, thus achieving a stable and efficient combustion state.

[0039] The system automatically switches between large and small fire modes according to load requirements. When the load is low, the system will switch to small fire mode to reduce energy waste; when the load is high, the system will switch to high fire mode to meet the combustion requirements under high load. This conversion is achieved by adjusting the gas flow and air door opening to ensure efficient and flexible combustion.

[0040] The ionization electrode continuously detects the stability of the flame. If the system detects that the flame is unstable or extinguished, the program controller will automatically adjust the gas flow, air damper opening or take other measures (such as starting the backup ignition device) to restore the stability of the flame. The system ensures that the flame is always in an ideal combustion state to prevent the decrease in combustion efficiency or safety hazards caused by unstable flames.

[0041] The air pressure switch monitors the air pressure in the furnace and burner in real time to ensure stable air flow and avoid the combustion process being affected by low or high pressure. The system adjusts the air door opening and fan speed according to the actual air pressure to ensure sufficient oxygen required for combustion and optimize combustion efficiency.

[0042] During the entire combustion process, the ionization electrodes and other sensors continuously monitor the operating status of the system. If any sensor detects an abnormality (such as flame extinguishment, gas leakage, abnormal pressure, etc.), the program controller will immediately take emergency measures, such as cutting off the gas, alarming or shutting down the system to ensure the safe and stable operation of the system.

[0043] The system will continue to adjust automatically based on the feedback of the combustion status. For example, when the temperature in the furnace changes or the pressure fluctuates, the program controller will adjust the gas volume or the air door opening to ensure that the combustion process is always in the best state. This feedback and adjustment mechanism ensures the stability and combustion efficiency of the system.

[0044] This embodiment is the core operation stage of the wall-type tangential combustion system burning low-quality coal, ensuring the high efficiency, stability and safety of the combustion process. This stage involves precise regulation of gas flow, flame monitoring, real-time feedback of combustion status and automatic regulation of the system. The system will switch between large and small fires according to different load requirements, while ensuring that all operating parameters are within the safe and efficient range.

[0045] Embodiment 5: See also Figure 7The present invention also provides an electronic device 100 for a wall-type tangential combustion method using low-quality coal; the electronic device 100 includes a memory 101, at least one processor 102, a computer program 103 stored in the memory 101 and executable on the at least one processor 102, and at least one communication bus 104.

[0046] The memory 101 can be used to store the computer program 103. The processor 102 implements the steps of the wall-type tangential combustion method for burning low-quality coal described in Example 1 by running or executing the computer program stored in the memory 101 and calling the data stored in the memory 101. The memory 101 can mainly include a program storage area and a data storage area, wherein the program storage area can store an operating system, an application required for at least one function (such as a sound playback function, an image playback function, etc.), etc.; the data storage area can store data (such as audio data) created according to the use of the electronic device 100, etc. In addition, the memory 101 can include a non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) card, a flash card (Flash Card), at least one disk storage device, a flash memory device, or other non-volatile solid-state storage devices.

[0047] The at least one processor 102 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The processor 102 may be a microprocessor or any conventional processor, etc. The processor 102 is the control center of the electronic device 100, and uses various interfaces and lines to connect various parts of the entire electronic device 100.

[0048] The memory 101 in the electronic device 100 stores a plurality of instructions to implement a wall-type tangential circle combustion method using low-quality coal, and the processor 102 can execute the plurality of instructions to implement: Carry out self-inspection on the wall-type tangential combustion system burning inferior coal, including system hardware self-inspection, safety limit switch self-inspection and servo motor self-inspection. After the self-inspection passes, calibrate the sensors in the wall-type tangential combustion system burning inferior coal; After the sensor is calibrated, the servo motor is started, and the air pressure switch is used to monitor the air pressure in real time, and the gas in the chamber is purged to completely discharge the gas in the chamber; After the purge is completed, the gas is turned on to ignite in the chamber and the flame status is continuously collected; The gas volume and air door opening are controlled according to the pressure, oxygen content and gas flow in the furnace.

[0049] Embodiment 6: If the module / unit integrated in the electronic device 100 is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present invention implements all or part of the process in the above-mentioned embodiment method, and can also be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium, and the computer program can implement the steps of the above-mentioned method embodiments when executed by the processor. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium may include: any entity or device that can carry the computer program code, recording medium, U disk, mobile hard disk, disk, optical disk, computer memory and read-only memory (ROM, Read-Only Memory).

[0050] It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Furthermore, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0051] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0052] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0053] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process in the computer or other programmable device. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0054] 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 above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A wall-type tangential circle combustion method using low-quality coal, characterized in that: The following steps are involved: Carry out self-inspection on the wall-type tangential combustion system burning inferior coal, including system hardware self-inspection, safety limit switch self-inspection and servo motor self-inspection. After the self-inspection passes, calibrate the sensors in the wall-type tangential combustion system burning inferior coal; After the sensor is calibrated, the servo motor is started, and the air pressure switch is used to monitor the air pressure in real time, and the gas in the chamber is purged to completely discharge the gas in the chamber; After the purge is completed, the gas is turned on to ignite in the chamber and the flame status is continuously collected; The gas volume and air door opening are controlled according to the pressure, oxygen content and gas flow in the furnace.

2. A wall-type tangential circle combustion method using low-quality coal according to claim 1, characterized in that: The wall-type tangential combustion system burning inferior coal is self-checked, including system hardware self-check, safety limit switch self-check and servo motor self-check. After the self-check is passed, the specific method for calibrating the sensors in the wall-type tangential combustion system burning inferior coal is as follows: After starting the power supply, the wall-type tangential circle combustion system burning inferior coal shall be self-checked to check whether the hardware of the wall-type tangential circle combustion system burning inferior coal is working properly; Conduct self-checks on the safety limit switches of wall-type tangential combustion systems burning low-quality coal to ensure that all safety limit switches are open; Conduct self-checks on the servo motors of the wall-type tangential combustion system burning low-quality coal to ensure that all servo motors are not started; After the system hardware self-test, safety limit switch self-test and servo motor self-test are passed, the sensors in the wall-type tangential circle combustion system burning low-quality coal are calibrated.

3. A wall-type tangential circle combustion method using low-quality coal according to claim 1, characterized in that: After the sensor is calibrated, start the servo motor, and use the air pressure switch to monitor the air pressure in real time to purge the gas in the chamber. The specific method to completely discharge the gas in the chamber is as follows: After the sensor is calibrated, the servo motor is started according to the preset time, driving the air door to the high-fire opening state and starting to supply air; The air pressure switch monitors the air pressure in real time and adjusts the air door opening in real time to ensure that the air pressure remains within the predetermined range; After the preset time is reached, the servo motor and the damper are closed.

4. A wall-type tangential circle combustion method using low-quality coal according to claim 1, characterized in that: When the gas is turned on for ignition in the chamber, after the air damper reaches the ignition opening, the ignition transformer starts, the gas begins to be released, and the ionization electrode is used to detect whether the flame is successfully ignited. Within 2 seconds, if a flame is detected, the system will continue to run and enter the normal combustion stage; if no flame is detected, the system will lock and close the solenoid valve, stop the gas supply and trigger the alarm mechanism.

5. A wall-type tangential circle combustion method using low-quality coal according to claim 1, characterized in that: The flame status is continuously collected and fed back in real time through the ionization electrode. If the flame is extinguished or offset, the gas flow and air door opening will be controlled and adjusted, or the backup ignition device will be started.

6. A wall-type tangential circle combustion method using low-quality coal according to claim 1, characterized in that: The specific method of controlling the gas volume and air door opening according to the pressure, oxygen content and gas flow in the furnace is as follows: Determine the furnace load based on the pressure, oxygen content and gas flow rate in the furnace; Compare the furnace load with the preset threshold range. When the furnace load is higher than the maximum value of the preset threshold range, it is a high load stage, and the gas volume is increased and the air door opening is increased; When the furnace load is lower than the minimum value of the preset threshold range, it is a low load stage, and the gas volume is reduced and the large air door opening is reduced; When the furnace load is between the minimum and maximum values ​​of the preset threshold range, no adjustment is made.

7. A wall-type tangential circle combustion method using low-quality coal according to claim 1, characterized in that: While the pressure, oxygen content and gas flow in the furnace control the gas volume and air door opening, the ionization electrode continuously monitors the flame state to ensure flame stability.

8. A wall-type tangential circle combustion system for burning low-quality coal, characterized in that: include: A self-check module is used to perform self-check on the wall-type tangential combustion system burning inferior coal. The self-check includes system hardware self-check, safety limit switch self-check and servo motor self-check. After the self-check passes, the sensors in the wall-type tangential combustion system burning inferior coal are calibrated; The purge module is used to start the servo motor after the sensor is calibrated, and to monitor the air pressure in real time in combination with the air pressure switch to purge the gas in the chamber so that the gas in the chamber is completely discharged; The ignition module is used to start the gas to ignite the chamber after the purge is completed, and continuously collect the flame status; The adjustment module is used to control the gas volume and the air door opening according to the pressure, oxygen content and gas flow in the furnace.

9. An electronic device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of a wall-type cut-circle combustion method using low-quality coal as described in any one of claims 1 to 7 are implemented.

10. A storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of a wall-type cut-circle combustion method using low-quality coal as described in any one of claims 1 to 7 are implemented.

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