Single-sided pulse plus single-point fine-tuning balanced combustion control method, system and kiln

Abstract

The application discloses a single-edge pulse and single-point fine adjustment balanced combustion control method and system and a kiln, belongs to the technical field of kilns, adopts a single-edge overall pulse stirring and single-nozzle single-point temperature and atmosphere fine adjustment mode, and has the following technical features: 1. High combustion efficiency; 2. High heat transfer efficiency; 3. High temperature control precision; 4. High intelligence degree; and 5. Low nitrogen and low carbon emission environmental protection up to standard. The kiln system is particularly suitable for large industrial heating scenes with strict requirements on temperature uniformity, temperature control precision and heating efficiency, and through the combination of single-edge pulse stirring combustion and single-point temperature fine adjustment balance, energy saving and emission reduction and low nitrogen consumption reduction are realized while the process system and product quality are ensured.

Description

Technical Field

[0001] This invention relates to the field of kiln technology, and in particular to a single-sided pulse plus single-point fine-tuning balanced combustion control method, system and kiln. Background Technology

[0002] Traditional kilns fall into two categories: the first is intermittent kilns, which mostly use single-point pressure proportional continuous combustion or pulse combustion to control the temperature of individual burners within the kiln. Currently, existing kilns typically have multiple high-speed burners installed between kiln cars and between the kiln cars and the front and rear kiln walls. These high-speed burners generate high-temperature flame streams by burning fuel to fire or heat the products. Each burner uses individual pressure proportional continuous combustion or pulse combustion control. Because the temperature control system only manages the flame stream from a single burner according to temperature requirements, it doesn't consider the mutual influence between burners within the entire temperature field. This also fails to address the common issue of a burner being off, yet its corresponding thermocouple detects a temperature that is not lower than the set value, or even exceeds it. This is the drawback of single-point temperature control for a single burner; it cannot comprehensively manage the temperature, pressure, and atmosphere throughout the entire kiln. The second type is the continuous kiln. Most continuous kilns use proportional pressure control for burner groups, with each group typically containing 2-8 burners, forming a temperature zone. Each group generally corresponds to a kiln length of 2-8 meters and has a temperature monitoring point. Each group of burners adjusts its power output based on whether the measured temperature at this point equals a preset value. This design assumes that the power output of each burner during adjustment precisely meets the temperature requirements of the products in its corresponding zone. However, in reality, it's difficult to ensure that the loading status of the products in each burner's zone is completely consistent. Therefore, it's inevitable that some burner zones may be overheating or underheating, but because the thermocouple measurements for those zones show underheating (or overheating), the heat power must be increased (or decreased) along with the other underheating (or overheating) burners. This inherently introduces temperature differences between different burner positions within each temperature zone from the design configuration alone.

[0003] Therefore, whether it is a batch or a continuous traditional kiln, the design ignores the fact that the kiln (or each temperature zone) is not only a whole thermal working field, but also that the heat requirements of the products loaded at different burner positions cannot be completely the same. This requires the configuration of overall temperature, atmosphere and pressure control for each temperature control zone in the batch or continuous kiln, as well as the control of the uniformity of the local burner area. Only in this way can qualified products with consistent quality be fired.

[0004] In addition, the traditional single-point (or temperature zone) temperature control method of kilns adjusts the burner output power based on the deviation between the measured temperature value and the preset value. However, the valve actuator is generally slow to adjust, and most of them use actuators with an angular stroke of 60 seconds. They lack the regular circulation and stirring of high-speed hot airflow, which will create dead zones of temperature, atmosphere and pressure inside the kiln. In particular, cubic kilns are more likely to create dead zones of temperature, pressure and atmosphere. Summary of the Invention

[0005] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention proposes a single-sided pulse plus single-point fine-tuning balanced combustion control method, system, and kiln.

[0006] According to a first aspect of the present invention, a single-sided pulse plus single-point fine-tuning balanced combustion control method is applied to a kiln. The left wall of the kiln is provided with multiple left-side high-speed pulse burners sharing a single left-side pulse valve, and also with multiple left-side temperature sensors. Each left-side high-speed pulse burner contains a built-in left-side permanent flame burner. The right wall of the kiln is provided with multiple right-side high-speed pulse burners sharing a single right-side pulse valve, and also with multiple right-side temperature sensors. Each right-side high-speed pulse burner contains a built-in right-side permanent flame burner. The left-side and right-side high-speed pulse burners, arranged opposite each other on the left and right walls of the kiln, are arranged in a three-dimensional, cross-symmetrical configuration on the two side walls of the kiln. Two adjacent left-side high-speed pulse burners are aligned vertically. The high-speed pulse burners on the right side are staggered vertically, with multiple left-side temperature sensors corresponding to each of the multiple right-side high-speed pulse burners. The left-side temperature sensors measure the combustion temperature of the corresponding right-side high-speed pulse burner. The multiple right-side temperature sensors also correspond to each of the multiple left-side high-speed pulse burners, measuring the combustion temperature of the corresponding left-side high-speed pulse burner. A kiln car loading stack is provided between the two adjacent left-side and right-side high-speed pulse burners. Each left-side and each right-side high-speed pulse burner is equipped with an independent single-point proportional fine-tuning balance system.

[0007] The control method includes:

[0008] When the kiln is started, the permanent flame burner built into the high-speed pulse burner on the left side of the kiln and all the permanent flame burners built into the high-speed pulse burner on the right side of the kiln are ignited and kept running.

[0009] After startup, the temperature curve, pressure curve, and pulse timing curve are executed simultaneously. The pulse valve on the left side of the kiln and all left-side high-speed pulse burners are controlled to alternately with the pulse valve on the right side of the kiln and all right-side high-speed pulse burners according to the pulse timing curve. This creates a hot airflow stirring and circulating fire channel on each side of each kiln car loading stack. The circulating fire channel includes branch fire channels between the kiln car loading stack and the left and right kiln walls, main fire channels between two kiln car loading stacks, and between the kiln car loading stack and the front and rear kiln walls. All left-side high-speed pulse burners are controlled to operate at a first preset output power, while all right-side high-speed pulse burners are controlled to operate at a second preset output power, where the first preset output power is significantly greater than the second preset output power. Similarly, all right-side high-speed pulse burners are controlled to operate at the first preset output power, while all left-side high-speed pulse burners are controlled to operate at the second preset output power, where the first preset output power is significantly greater than the second preset output power.

[0010] Each of the left-side temperature sensors is controlled to measure the actual measured temperature on the left side, which is the combustion temperature of the right-side high-speed pulse burner corresponding to the left-side temperature sensor. Similarly, each of the right-side temperature sensors is controlled to measure the actual measured temperature on the right side, which is the combustion temperature of the left-side high-speed pulse burner corresponding to the right-side temperature sensor. A single-point proportional fine-tuning balance system compares each of the left-side actual measured temperatures with a preset temperature in real time according to a sampling frequency preset by the control system.

[0011] When the actual measured temperature on the right side of any of the right-side temperature sensors is not equal to the preset temperature, the single-point proportional fine-tuning balance system will be activated. If the actual measured temperature on the right side is less than the preset temperature, while keeping the single-sided pulse stirring timing curve unchanged, the single-point proportional fine-tuning balance system will control the vent valve on the combustion air pressure feedback pipe of the air / fuel proportional valve corresponding to the left-side high-speed pulse burner to gradually close until the actual measured temperature on the right side equals the preset value. If the actual measured temperature on the right side is greater than the preset temperature, while keeping the single-sided pulse stirring timing unchanged, the single-point proportional fine-tuning balance system will control the vent valve on the combustion air pressure feedback pipe of the air / fuel proportional valve corresponding to the left-side high-speed pulse burner to gradually open until the actual measured temperature on the right side equals the preset value.

[0012] When the actual measured temperature on the left side of any of the left-side temperature sensors is not equal to the preset temperature, if the actual measured temperature on the left side is less than the preset temperature, while keeping the single-sided pulse stirring timing curve unchanged, the temperature single-point proportional fine-tuning balance system controls the vent valve on the combustion air pressure feedback pipe of the air / fuel proportional valve corresponding to the right-side high-speed pulse burner to gradually close until the actual measured temperature on the left side equals the preset value; if the actual measured temperature on the left side is greater than the preset temperature, while keeping the single-sided pulse stirring timing unchanged, the temperature single-point proportional fine-tuning balance system controls the vent valve on the combustion air pressure feedback pipe of the air / fuel proportional valve corresponding to the right-side high-speed pulse burner to gradually open until the actual measured temperature on the left side equals the preset value.

[0013] The single-sided pulse plus single-point fine-tuning balanced combustion control method according to embodiments of the present invention has at least the following beneficial effects: It employs a single-sided overall pulse stirring method combined with single-point temperature and atmosphere fine-tuning of a single burner.

[0014] 1. High combustion efficiency: The combination of single-sided pulse combustion control technology and high-speed pulse burner ensures that the fuel and air are mixed thoroughly and evenly, greatly improving combustion efficiency and saving more than 10% energy compared to traditional combustion methods.

[0015] 2. High heat transfer efficiency: Pulse timing control is adopted, so that the burners on both sides of the kiln work between high fire (first preset output power, which is much greater than the second preset output power) and low fire (second preset output power, which is much less than the first preset output power) under the action of the pulse curve. The hot air flow in the kiln is always in a high-speed stirring state, allowing convection, radiation and conduction to occur simultaneously. The heat transfer efficiency is high, which can make the temperature and atmosphere in all parts of the kiln more uniform and more conducive to improving product quality.

[0016] 3. High Temperature Control Precision: This combustion technology achieves stability through dynamic operation. Overall pulse stirring controls the pulse burners on both sides of the kiln, operating between a high-power setting (first preset output power, significantly higher than the second preset output power) and a low-power setting (second preset output power, significantly lower than the first preset output power), automatically alternating according to the pulse sequence. This comprehensively solves the problem of temperature dead zones. Fine-tuning of individual burners allows for precise temperature control at various points within the furnace, closely following the preset temperature. This effectively solves the problem of temperature balance within the kiln, resulting in high temperature control precision and small cross-sectional temperature differences. It effectively addresses the problem of low firing yield caused by cross-sectional temperature differences and atmosphere differences within the kiln or controlled temperature area.

[0017] 4. High level of intelligence: It achieves intelligent multi-variable dynamic balance control of temperature, pressure, and atmosphere, avoiding the instability and uncertainty caused by manual operation. Users only need to input the firing process parameters, such as temperature, pressure, and pulse curve, into the industrial control computer, and the system can automatically complete the entire firing process. In case of fault, it will automatically alarm and remind you to handle it.

[0018] 5. Low carbon and low nitrogen, meeting environmental standards: By precisely controlling combustion parameters, the combustion of gas is ensured to be complete, which can reduce the generation of harmful gases such as carbon monoxide and nitrogen oxides. At the same time, the combustion ratio of gas and air can be adjusted according to the changes in the oxygen content in the flue gas, so that emissions meet the standards and are more environmentally friendly.

[0019] This kiln system is particularly suitable for large-capacity, wide-section industrial heating scenarios with strict requirements for temperature uniformity, temperature control accuracy, and heating efficiency. Through a combination of pulse combustion and single-point fine-tuning, it achieves energy saving, emission reduction, and low-NOx consumption while ensuring firing process and product quality. According to some embodiments of the present invention, controlling all the left-side high-speed pulse burners and all the right-side high-speed pulse burners to operate alternately according to a pulse timing curve, so that each side of each kiln car loading stack forms a hot airflow stirring and circulating fire channel, includes:

[0020] The time during which the left high-speed pulse burner operates at the first preset output power is equal to the time during which the left high-speed pulse burner operates at the second preset output power; alternatively, the time during which the burner operates at the first preset output power may be set to be different from the time during which it operates at the second preset output power.

[0021] The time during which the right-side high-speed pulse burner operates at the first preset output power is equal to the time during which the right-side high-speed pulse burner operates at the second preset output power. Alternatively, the time during which the burner operates at the first preset output power can be set to be different from the time during which it operates at the second preset output power, as needed.

[0022] According to some embodiments of the present invention, controlling all the left-side high-speed pulse burners and all the right-side high-speed pulse burners to operate alternately according to a pulse timing curve, so that each side of each kiln car loading stack forms a hot airflow stirring and circulating fire channel, includes:

[0023] The high-speed hot air jets ejected from the left and right high-speed pulse burners at both ends of the kiln reach the opposite kiln sidewall. The high-speed hot air jets from the upper left or right high-speed pulse burner split into two paths. One path moves along the branch fire channel between the product on the kiln car loading stack and the kiln sidewall towards the adjacent main fire channel, directly reaching the outlet of the left or right high-speed pulse burner located above the main fire channel on the same side. The other path moves downwards along the kiln wall, directly reaching the outlet of the lower left or right high-speed pulse burner on the same side. The high-speed hot airflow of the high-speed pulse burner is also divided into two paths. One path moves along the branch fire channel formed between the product on the kiln car loading stack and the kiln side wall towards the adjacent main fire channel, directly reaching the outlet of the left or right high-speed pulse burner located above the main fire channel on the same side. The other path moves upward along the kiln side wall, directly reaching the outlet of the left or right high-speed pulse burner above the same side. When the next pulse cycle arrives and the burner flame state changes, the high-speed hot airflow will participate in the relay motion of the high-speed hot airflow ejected from the outlet of the adjacent left or right high-speed pulse burner, continuously cycling with the pulse cycle.

[0024] The high-speed hot airflow emitted by the left and right high-speed pulse burners in the middle of the kiln reaches the opposite kiln side wall. The high-speed hot airflow from the upper left or right high-speed pulse burner then splits into three paths. Two of the paths from the left high-speed pulse burner follow the branch fire channel formed between the product on the kiln car loading stack and the kiln side wall to the outlets of the two left high-speed pulse burners on the same side of the adjacent front and rear main fire channels. The third path from the left high-speed pulse burner… The airflow moves downwards along the kiln sidewall, reaching the outlet of the right-side high-speed pulse burner on the opposite side below; wherein the two high-speed hot airflows ejected from the right-side high-speed pulse burner move along the branch fire channel formed between the product on the kiln car loading stack and the kiln sidewall to the outlets of the two right-side high-speed pulse burners on the adjacent front and rear sides of the main fire channel; the third hot airflow ejected from the right-side high-speed pulse burner moves downwards along the kiln sidewall, reaching the outlet of the left-side high-speed pulse burner on the opposite side below; the left-side high-speed pulse burner located below or The high-speed hot airflow from the right-side high-speed pulse burner is divided into three paths. Two of these paths, originating from the left-side high-speed pulse burner, flow along the branch fire channels formed between the product on the kiln car loading stack and the kiln side wall, towards the outlets of the two left-side high-speed pulse burners on the adjacent front and rear sides of the main fire channel. The third path, originating from the left-side high-speed pulse burner, flows upward along the kiln side wall, reaching the outlet of the right-side high-speed pulse burner on the opposite side. The two paths of high-speed hot airflow from the right-side high-speed pulse burner flow along the kiln car loading stack... The product on the kiln moves through the branch fire channel formed between the product and the kiln side wall to the outlet of the two high-speed pulse burners on the same side of the main fire channel on the front and rear sides. The third stream of hot air jetted from the high-speed pulse burner on the right side moves upward along the kiln side wall and reaches the outlet of the high-speed pulse burner on the left side above. When the next pulse cycle arrives, the high-speed hot air jet will participate in the high-speed hot air jet ejected from the outlet of the next adjacent high-speed pulse burner on the left or right side, and perform a relay motion, continuously cycling with the pulse cycle.

[0025] According to some embodiments of the present invention, controlling all the left-side high-speed pulse burners and all the right-side high-speed pulse burners to operate alternately according to a pulse timing curve, so that each side of each kiln car loading stack forms a hot airflow stirring and circulating fire channel, includes:

[0026] Each kiln car loading stack has multiple product layers spaced vertically apart. Each kiln car loading stack has two branch fire channels and two main fire channels around its perimeter. High-temperature hot air diffusion channels are also formed in the gaps between the products in each product layer.

[0027] According to some embodiments of the present invention, when the actual measured temperature on the right side of any one of the right-side temperature sensors of the kiln deviates from the preset temperature, the corresponding left-side high-speed pulse burner can use a single-point proportional fine-tuning balancing system to gradually bring the actual measured temperature on the right side closer to the preset temperature, including:

[0028] When any of the actual measured temperatures on the right side is lower than the preset temperature, while maintaining the stirring of the pulse burners on both sides according to the pulse sequence, the temperature single-point proportional fine-tuning balance system closes the vent valve on the combustion air feedback pipe of the corresponding left high-speed pulse burner to increase the pressure in the combustion air feedback pipe of the air / fuel ratio valve of the corresponding left high-speed pulse burner. This increases the gas flow rate of the left high-speed pulse burner and the output heat power, which will inevitably make the actual measured temperature value on the right side approach the preset temperature, thus achieving fine-tuning of the temperature deviation at that point.

[0029] When any of the actual measured temperatures on the right side exceeds the preset temperature, while maintaining the stirring of the pulse burners on both sides according to the pulse sequence, the temperature single-point proportional fine-tuning balance system opens the vent valve on the combustion air feedback pipe of the corresponding high-speed pulse burner to reduce the pressure in the combustion air feedback pipe of the air / fuel ratio valve of the corresponding left high-speed pulse burner. This reduces the gas flow rate of the left high-speed pulse burner and decreases the output heat power, which will inevitably cause the actual measured temperature value on the right side to approach the preset temperature, thus achieving fine-tuning of the temperature deviation at that point.

[0030] According to some embodiments of the present invention, when the actual temperature measured by any of the left-side temperature sensors of the kiln deviates from the preset temperature, the corresponding right-side high-speed pulse burner can use a single-point proportional temperature adjustment balancing system to gradually bring the actual measured temperature on the left side closer to the preset temperature, including:

[0031] When any of the actual measured temperatures on the left side is lower than the preset temperature, while maintaining the stirring of the pulse burners on both sides according to the pulse sequence, the temperature single-point proportional fine-tuning balance system closes the vent valve of the corresponding high-speed pulse burner to increase the pressure in the combustion air feedback pipe of the air / fuel ratio valve of the corresponding high-speed pulse burner on the right side. This increases the gas flow rate of the high-speed pulse burner on the right side and increases the output heat power, which will inevitably make the actual measured temperature value on the left side approach the preset temperature, thus achieving fine-tuning of the temperature deviation at that point.

[0032] When any of the actual measured temperatures on the left side exceeds the preset temperature, while maintaining the pulse burners on both sides stirring according to the pulse sequence, the temperature single-point proportional fine-tuning balance system opens the vent valve on the combustion air feedback pipe of the corresponding high-speed pulse burner on the right side to reduce the pressure in the combustion air feedback pipe of the air / fuel ratio valve of the corresponding high-speed pulse burner on the right side. This reduces the gas flow rate of the high-speed pulse burner on the right side and decreases the output heat power, which will inevitably cause the actual measured temperature value on the left side to approach the preset temperature, thus achieving fine-tuning of the temperature deviation at that point.

[0033] According to a second aspect of the present invention, a single-sided pulse plus single-point fine-tuning balanced combustion control system is used to implement the single-sided pulse plus single-point fine-tuning balanced combustion control method as described in the above embodiments, the control system comprising:

[0034] Combustion air main;

[0035] The left-side combustion air branch pipe is connected to the main combustion air pipe, and all the left-side high-speed pulse burners are connected in parallel to the left-side combustion air branch pipe;

[0036] The right-side combustion air branch pipe is connected to the main combustion air pipe, and all the right-side high-speed pulse burners are connected in parallel to the right-side combustion air branch pipe;

[0037] The left pulse valve is located between the main combustion air pipe and the left combustion air branch pipe;

[0038] The right-side pulse valve is located between the main combustion air pipe and the right-side combustion air branch pipe.

[0039] According to some embodiments of the present invention, each of the left-side high-speed pulse burners includes:

[0040] The left high-speed pulse burner body is provided with a left combustion air port that connects to the left combustion air branch pipe;

[0041] Fuel enters the pipeline on the left side, connecting to the body of the high-speed pulse burner on the left side;

[0042] The left-side air / fuel ratio valve is located in the left-side fuel inlet pipe;

[0043] The left combustion air feedback pipe connects the left air / fuel ratio valve to the left combustion air branch pipe, and the left combustion air feedback pipe is equipped with a left exhaust valve.

[0044] According to some embodiments of the present invention, each of the right-side high-speed pulse burners includes:

[0045] The right high-speed pulse burner body is provided with a right combustion air port that connects to the right combustion air branch pipe;

[0046] Fuel enters the pipeline on the right side, connecting to the body of the high-speed pulse burner on the right side;

[0047] The right-side air / fuel ratio valve is located in the right-side fuel inlet pipe;

[0048] The right-side combustion air feedback pipe connects the right-side air / fuel proportional valve to the right-side combustion air branch pipe, and the right-side combustion air feedback pipe is equipped with a right-side vent valve.

[0049] According to a third aspect of the present invention, a kiln (a temperature control zone of an intermittent or continuous kiln) includes a single-sided pulse plus single-point fine-tuning balanced combustion control system as described in the above embodiments. Attached Figure Description

[0050] Figure 1 This is a schematic diagram of the structure of a single-sided pulse plus single-point fine-tuning balanced combustion control system according to an embodiment of the present invention;

[0051] Figure 2 This is an enlarged schematic diagram of the high-speed pulse burner on the left side in one embodiment of the present invention;

[0052] Figure 3 This is an enlarged schematic diagram of the high-speed pulse burner on the right side in one embodiment of the present invention;

[0053] Figure 4 This is a schematic diagram of the structure of the left high-speed pulse burner body or the right high-speed pulse burner body in one embodiment of the present invention;

[0054] Figure 5 This is a schematic diagram of the branch flue and the main flue in one embodiment of the present invention;

[0055] Figure 6 This is a schematic cross-sectional view of a single-sided pulse plus single-point fine-tuning balanced combustion control system according to an embodiment of the present invention along the horizontal direction;

[0056] Figure 7 This is another cross-sectional schematic diagram along the horizontal direction of a single-sided pulse plus single-point fine-tuning balanced combustion control system according to an embodiment of the present invention;

[0057] Figure 8 This is a three-dimensional schematic diagram of a single-sided pulse plus single-point fine-tuning balanced combustion control system according to an embodiment of the present invention;

[0058] Figure 9 This is a cross-sectional schematic diagram of a single-sided pulse plus single-point fine-tuning balanced combustion control system according to an embodiment of the present invention along the vertical direction;

[0059] Figure 10 This is another cross-sectional schematic diagram of the single-sided pulse plus single-point fine-tuning balanced combustion control system according to an embodiment of the present invention along the vertical direction;

[0060] Figure 11 This is a schematic diagram of the temperature curve, pressure curve, and pulse timing curve in the intermittent kiln control process curve of an embodiment of the present invention;

[0061] Figure 12 This is a schematic diagram of the temperature curve, pressure curve, and pulse timing curve in the continuous kiln control process curve of an embodiment of the present invention.

[0062] Reference numerals: Kiln 100, Left high-speed pulse burner 200, Left high-speed pulse burner body 210, Left combustion air port 211, Left fuel inlet pipe 220, Left air / fuel ratio valve 230, Left combustion air feedback pipe 240, Left vent valve 241, Left pilot flame burner 250, Right high-speed pulse burner 300, Right high-speed pulse burner body 310, Right combustion air port 311, Right fuel inlet pipe 320, Right air / fuel ratio valve Valve 330, right-side combustion air feedback pipe 340, right-side vent valve 341, right-side pilot burner 350, combustion air main pipe 400, left-side combustion air branch pipe 410, right-side combustion air branch pipe 420, left-side pulse valve 430, right-side pulse valve 440, fuel main pipe 500, left-side fuel branch pipe 510, right-side fuel branch pipe 520, kiln car loading stack 600, branch fire channel 700, main fire channel 701, left-side temperature sensor 800, right-side temperature sensor 900. Detailed Implementation

[0063] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0064] In the description of this invention, it should be understood that the terms front, back, up, down, axial, circumferential, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0065] In the description of this invention, "multiple" means two or more; "greater than," "less than," and "exceeding" are understood to exclude the stated number; "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0066] In the description of this invention, it should be noted that terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0067] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are some embodiments of the present invention, not all embodiments.

[0068] Reference Figures 1 to 4 As shown, the present invention provides a single-sided pulse plus single-point fine-tuning balanced combustion control system.

[0069] The single-sided pulse plus single-point fine-tuning balanced combustion control system includes a kiln 100, multiple left-side high-speed pulse burners 200, multiple right-side high-speed pulse burners 300, a combustion air main pipe 400, a left-side combustion air branch pipe 410, a right-side combustion air branch pipe 420, a left-side pulse valve 430, a right-side pulse valve 440, a fuel main pipe 500, a left-side fuel branch pipe 510, and a right-side fuel branch pipe 520.

[0070] Reference Figure 1 As shown, the kiln 100 is arranged along the front-to-back direction. Multiple left-side high-speed pulse burners 200 are arranged on the left side of the kiln wall of the kiln 100. The multiple left-side high-speed pulse burners 200 are spaced apart along the front-to-back direction, and every two adjacent left-side high-speed pulse burners 200 are staggered along the vertical direction. Multiple right-side high-speed pulse burners 300 are arranged on the right side of the kiln wall of the kiln 100. The multiple right-side high-speed pulse burners 300 are spaced apart along the front-to-back direction, and every two adjacent right-side high-speed pulse burners 300 are staggered along the vertical direction.

[0071] The high-speed pulse burner 200 on the left and the high-speed pulse burner 300 on the right are arranged in a three-dimensional cross-symmetrical manner on both sides of the kiln 100.

[0072] The left combustion air branch pipe 410 and the right combustion air branch pipe 420 are connected in parallel and then connected to the combustion air main pipe 400. The combustion air main pipe 400 delivers combustion air to the left combustion air branch pipe 410 and the right combustion air branch pipe 420 respectively. The left pulse valve 430 is located between the left combustion air branch pipe 410 and the combustion air main pipe 400, and the right pulse valve 440 is located between the right combustion air branch pipe 420 and the combustion air main pipe 400. The left pulse valve 430 controls the flow rate of combustion air from the combustion air main pipe 400 into the left combustion air branch pipe 410, and the right pulse valve 440 controls the flow rate of combustion air from the combustion air main pipe 400 into the right combustion air branch pipe 420.

[0073] The left combustion air branch pipe 410 connects to all the parallel-connected left high-speed pulse burners 200, and the right combustion air branch pipe 420 connects to all the parallel-connected right high-speed pulse burners 300.

[0074] The left fuel branch pipe 510 and the right fuel branch pipe 520 are connected in parallel and then connected to the fuel main pipe 500. The fuel main pipe 500 delivers fuel to the left fuel branch pipe 510 and the right fuel branch pipe 520 respectively. The left fuel branch pipe 510 is connected to multiple left high-speed pulse burners 200 arranged in parallel, and the right fuel branch pipe 520 is connected to multiple right high-speed pulse burners 300 arranged in parallel.

[0075] Reference Figure 2 As shown, the left high-speed pulse burner 200 includes a left high-speed pulse burner body 210, a left fuel inlet pipe 220, a left air / fuel ratio valve 230, a left combustion air feedback pipe 240, and a left exhaust valve 241.

[0076] The left high-speed pulse burner body 210 is provided with a left combustion air port 211, which is connected to the left combustion air branch pipe 410. The left fuel inlet pipe 220 is connected to the left high-speed pulse burner body 210 and the left fuel branch pipe 510. The left air / fuel ratio valve 230 is provided in the left fuel inlet pipe 220 and controls the fuel flow rate delivered from the left fuel inlet pipe 220 to the left high-speed pulse burner body 210.

[0077] The left combustion air feedback pipe 240 connects the left combustion air branch pipe 410 and the left air / fuel proportional valve 230. The user can preset the correspondence between the feedback pressure and the opening (flow) of the left air / fuel proportional valve 230.

[0078] During operation, the opening (flow rate) of the left air / fuel proportional valve 230 is controlled by the feedback pressure within the left combustion air feedback pipe 240. Based on the feedback pressure and its corresponding relationship, the opening (flow rate) is determined, allowing the left air / fuel proportional valve 230 to precisely control the flow rate of fuel entering the left fuel inlet pipe 220 and the left high-speed pulse burner body 210 according to the opening (flow rate). In this embodiment, the higher the pressure within the combustion air feedback pipe, the larger the opening (flow rate) of the left air / fuel proportional valve 230; conversely, the lower the pressure within the combustion air feedback pipe, the smaller the opening (flow rate) of the left air / fuel proportional valve 230.

[0079] The left-side vent valve 241 connects the left-side combustion air feedback pipe 240 to the outside. The left-side vent valve 241 is used to release the combustion air from the left-side combustion air feedback pipe 240. Since the left-side combustion air feedback pipe 240 is connected to the left-side combustion air branch pipe 410, opening the left-side vent valve 241 allows the combustion air entering the left-side high-speed pulse burner body 210 to be released to the outside, reducing the flow rate of combustion air entering the left-side high-speed pulse burner body 210. Furthermore, because the left-side vent valve 241 releases the combustion air from the left-side combustion air feedback pipe 240, the feedback pressure of the left-side combustion air feedback pipe 240 decreases, thereby reducing the opening degree of the left-side air / fuel ratio valve 230. This reduces the fuel flow rate delivered from the left-side fuel inlet pipe 220 to the left-side high-speed pulse burner body 210, inevitably causing the left-side high-speed pulse burner 200 to organize combustion according to the newly revised air / fuel ratio, while simultaneously reducing the combustion power.

[0080] Reference Figure 3 As shown, the right high-speed pulse burner 300 includes a right high-speed pulse burner body 310, a right fuel inlet pipe 320, a right air / fuel ratio valve 330, a right combustion air feedback pipe 340, and a right exhaust valve 341.

[0081] The right high-speed pulse burner body 310 is provided with a right combustion air port 311, which is connected to the right combustion air branch pipe 420. The right fuel inlet pipe 320 is connected to the right high-speed pulse burner body 310 and the right fuel branch pipe 520. The right air / fuel ratio valve 330 is provided in the right fuel inlet pipe 320 and controls the fuel flow rate delivered from the right fuel inlet pipe 320 to the right high-speed pulse burner body 310.

[0082] The right-side combustion air feedback pipe 340 connects the right-side combustion air branch pipe 420 and the right-side air / fuel proportional valve 330. The user can preset the correspondence between the feedback pressure and the opening (flow) of the right-side air / fuel proportional valve 330.

[0083] During operation, the opening (flow rate) of the right-side air / fuel proportional valve 330 is controlled by the combustion air feedback pressure within the right-side combustion air feedback pipe 340. Based on the feedback pressure and its corresponding relationship, the opening (flow rate) is determined, allowing the right-side air / fuel proportional valve 330 to precisely control the flow rate of fuel entering the right-side pipe 320 and the right-side high-speed pulse burner body 310 according to the opening (flow rate). In this embodiment, the higher the pressure within the combustion air feedback pipe, the larger the opening (flow rate) of the right-side air / fuel proportional valve 330; conversely, the lower the pressure within the combustion air feedback pipe, the smaller the opening (flow rate) of the right-side air / fuel proportional valve 330.

[0084] The right-side vent valve 341 connects the right-side combustion air feedback pipe 340 to the outside. The right-side vent valve 341 is used to release the combustion air from the right-side combustion air feedback pipe 340. Since the right-side combustion air feedback pipe 340 is connected to the right-side combustion air branch pipe 420, opening the right-side vent valve 341 allows the combustion air entering the right-side high-speed pulse burner body 310 to be released to the outside, reducing the flow rate of combustion air entering the right-side high-speed pulse burner body 310. Furthermore, because the right-side vent valve 341 releases the combustion air from the right-side combustion air feedback pipe 340, the feedback pressure within the right-side combustion air feedback pipe 340 decreases, thereby reducing the opening degree (flow rate) of the right-side air / fuel ratio valve 330. This reduces the fuel flow rate delivered from the right-side fuel inlet pipe 320 to the right-side high-speed pulse burner body 310, inevitably causing the right-side high-speed pulse burner 300 to organize combustion according to the newly revised air-fuel ratio, while simultaneously reducing the combustion power.

[0085] The left pulse valve 430 controls the flow rate of combustion air from the main combustion air pipe 400 into the left combustion air branch pipe 410, and the right pulse valve 440 controls the flow rate of combustion air from the main combustion air pipe 400 into the right combustion air branch pipe 420.

[0086] Reference Figure 4 As shown, each left high-speed pulse burner 200 has a built-in left permanent flame burner 250, which maintains a constant power and operates continuously. Each right high-speed pulse burner 300 has a built-in right permanent flame burner 350, which maintains a constant power and operates continuously.

[0087] Reference Figures 5 to 12 As shown, the present invention also provides a single-sided pulse plus single-point fine-tuning balanced combustion control method.

[0088] Applied to kiln 100, the kiln 100 has multiple left-side high-speed pulse burners 200 and multiple left-side temperature sensors 800 on its left-side wall. Each left-side high-speed pulse burner 200 has a built-in left-side permanent flame burner 250. The kiln 100 has multiple right-side high-speed pulse burners 300 and multiple right-side temperature sensors 900 on its right-side wall. Each right-side high-speed pulse burner 300 has a built-in right-side permanent flame burner 350. The left-side high-speed pulse burners 200 and right-side high-speed pulse burners 300 are arranged in a three-dimensional, cross-symmetrical manner on the left and right sides of the kiln 100. Two adjacent left-side high-speed pulse burners 200 are staggered vertically. Two adjacent right-side high-speed pulse burners 350 are also staggered vertically. The components are staggered vertically. Multiple left-side temperature sensors 800 are set one-to-one with multiple right-side high-speed pulse burners 300. The left-side temperature sensors 800 measure the combustion temperature of the corresponding right-side high-speed pulse burner 300. Multiple right-side temperature sensors 900 are set one-to-one with multiple left-side high-speed pulse burners 200. The right-side temperature sensors 900 measure the combustion temperature of the corresponding left-side high-speed pulse burner 200. A kiln car loading stack 600 is provided between two adjacent left-side high-speed pulse burners 200 and two adjacent right-side high-speed pulse burners 300. Each left-side high-speed pulse burner 200 and each right-side high-speed pulse burner 300 is equipped with an independent temperature single-point proportional fine-tuning balance system.

[0089] Control methods include:

[0090] When the kiln 100 is started, the built-in permanent flame burner 250 of the high-speed pulse burner 200 on the left side of the kiln 100 and the built-in permanent flame burner 350 of the high-speed pulse burner 300 on the right side of the kiln 100 are ignited and kept running.

[0091] After startup, the temperature curve, pressure curve, and pulse timing curve are executed simultaneously. This controls the left-side pulse valve 430 and all left-side high-speed pulse burners 200 of the kiln 100 to alternate with the right-side pulse valve 440 and all right-side high-speed pulse burners 300 according to the pulse timing curve. This causes each side of each kiln car loading stack 600 to form a hot airflow stirring and circulating fire channel. The circulating fire channel includes the branch fire channel 700 between the kiln car loading stack 600 and the left and right kiln walls of the kiln 100, the fire channel between two kiln car loading stacks 600, and the fire channel within the kiln. The main fire channel 701 between the front and rear kiln walls of the loading stack 600 and the kiln 100: controls all left-side high-speed pulse burners 200 to operate at a first preset output power, and simultaneously controls all right-side high-speed pulse burners 300 to operate at a second preset output power, with the first preset output power being much greater than the second preset output power; controls all right-side high-speed pulse burners 300 to operate at the first preset output power, and simultaneously controls all left-side high-speed pulse burners 200 to operate at the second preset output power, with the first preset output power being much greater than the second preset output power;

[0092] Each left-side temperature sensor 800 is controlled to measure the actual temperature on the left side, which is the combustion temperature of the right-side high-speed pulse burner 300 corresponding to the left-side temperature sensor 800. Each right-side temperature sensor 900 is controlled to measure the actual temperature on the right side, which is the combustion temperature of the left-side high-speed pulse burner 200 corresponding to the right-side temperature sensor 900. The single-point proportional fine-tuning balance system compares the actual temperature on the left side with the preset temperature in real time according to the sampling frequency preset by the control system. The single-point proportional fine-tuning balance system compares the actual temperature on the right side with the preset temperature in real time according to the sampling frequency preset by the control system.

[0093] When the actual measured temperature on the right side of any one of the right-side temperature sensors 900 is not equal to the preset temperature, the single-point proportional fine-tuning balance system will be activated. If the actual measured temperature on the right side is less than the preset temperature, while keeping the single-sided pulse stirring timing curve unchanged, the single-point proportional fine-tuning balance system will control the vent valve on the combustion air pressure feedback pipe of the air / fuel proportional valve of the corresponding left-side high-speed pulse burner 200 to gradually close until the actual measured temperature on the right side equals the preset value. If the actual measured temperature on the right side is greater than the preset temperature, while keeping the single-sided pulse stirring timing unchanged, the single-point proportional fine-tuning balance system will control the vent valve on the combustion air pressure feedback pipe of the air / fuel proportional valve of the corresponding left-side high-speed pulse burner 200 to gradually open until the actual measured temperature on the right side equals the preset value.

[0094] When the actual measured temperature on the left side of any one of the left-side temperature sensors 800 is not equal to the preset temperature, if the actual measured temperature on the left side is less than the preset temperature, while keeping the single-sided pulse stirring timing curve unchanged, the temperature single-point proportional fine-tuning balance system controls the vent valve on the combustion air pressure feedback pipe of the air / fuel proportional valve of the corresponding right-side high-speed pulse burner 300 to gradually close until the actual measured temperature on the left side equals the preset value; if the actual measured temperature on the left side is greater than the preset temperature, while keeping the single-sided pulse stirring timing unchanged, the temperature single-point proportional fine-tuning balance system controls the vent valve on the combustion air pressure feedback pipe of the air / fuel proportional valve of the corresponding right-side high-speed pulse burner 300 to gradually open until the actual measured temperature on the left side equals the preset value.

[0095] In some embodiments, controlling all left-side high-speed pulse burners 200 and all right-side high-speed pulse burners 300 to operate alternately according to a pulse timing curve, so that each side of each kiln car loading stack 600 forms a hot airflow stirring and circulating fire channel, including:

[0096] The time that the left high-speed pulse burner 200 operates at the first preset output power is equal to the time that the left high-speed pulse burner 200 operates at the second preset output power; or they can be set to be unequal according to process requirements.

[0097] The time that the right-side high-speed pulse burner 300 operates at the first preset output power is equal to the time that the right-side high-speed pulse burner 300 operates at the second preset output power. Alternatively, they can be set to be unequal according to process requirements.

[0098] In some embodiments, controlling all left-side high-speed pulse burners 200 and all right-side high-speed pulse burners 300 to operate alternately according to a pulse timing curve, so that each side of each kiln car loading stack 600 forms a hot airflow stirring and circulating fire channel, including:

[0099] After the high-speed hot airflow from the left-side high-speed pulse burners 200 and right-side high-speed pulse burners 300 at both ends of the kiln 100 reaches the opposite kiln sidewall, the high-speed hot airflow from the upper left-side high-speed pulse burner 200 or right-side high-speed pulse burner 300 will split into two paths. One path moves around the branch fire channel 700 between the product on the kiln car loading stack 600 and the kiln sidewall towards the adjacent main fire channel 701, directly reaching the outlet of the left-side high-speed pulse burner 200 or right-side high-speed pulse burner 300 located above the main fire channel 701 on the same side. The other path moves downward along the kiln wall, directly reaching the outlet of the lower left-side high-speed pulse burner 200 or right-side high-speed pulse burner 300 on the same side. The high-speed hot airflow of the high-speed pulse burner 300 is also divided into two paths. One path moves around the branch fire channel 700 formed between the product on the kiln car loading stack 600 and the kiln side wall towards the adjacent main fire channel 701, directly reaching the outlet of the left high-speed pulse burner 200 or the right high-speed pulse burner 300 located above the main fire channel 701 on the same side. The other path moves upward along the kiln side wall, directly reaching the outlet of the left high-speed pulse burner 200 or the right high-speed pulse burner 300 above on the same side. When the next pulse cycle arrives and the burner flame state changes, the high-speed hot airflow will participate in the relay motion of the high-speed hot airflow ejected from the outlet of the adjacent left high-speed pulse burner 200 or the right high-speed pulse burner 300, continuously cycling with the pulse cycle.

[0100] The high-speed hot airflow emitted from the left-side high-speed pulse burner 200 and the right-side high-speed pulse burner 300 in the middle of the kiln 100 reaches the opposite kiln side wall. The high-speed hot airflow from the upper left-side high-speed pulse burner 200 or right-side high-speed pulse burner 300 splits into three paths. Two of these paths, emitted from the left-side high-speed pulse burner 200, move along the branch fire channel 700 formed between the product on the kiln car loading stack 600 and the kiln side wall towards the outlets of the two left-side high-speed pulse burners 200 on the same side of the adjacent main fire channel 701. The first path of high-speed hot airflow emitted from the left-side high-speed pulse burner 200... Three streams of hot air flow downwards along the kiln sidewall, reaching the outlet of the right-side high-speed pulse burner 300 on the opposite side. Two streams of high-speed hot air from the right-side high-speed pulse burner 300 flow along the branch fire channel 700 formed between the product on the kiln car loading stack 600 and the kiln sidewall, moving towards the outlets of the two right-side high-speed pulse burners 300 on the adjacent front and rear main fire channels 701. A third stream of hot air from the right-side high-speed pulse burner 300 flows downwards along the kiln sidewall, reaching the outlet of the left-side high-speed pulse burner 200 on the opposite side. The left-side high-speed pulse burner 200... Alternatively, the high-speed hot airflow from the right-side high-speed pulse burner 300 is divided into three paths. Two of these paths, originating from the left-side high-speed pulse burner 200, flow along the branch fire channel 700 formed between the product on the kiln car loading stack 600 and the kiln side wall, towards the outlets of the two left-side high-speed pulse burners 200 on the adjacent front and rear main fire channels 701. The third path, originating from the left-side high-speed pulse burner 200, flows upward along the kiln side wall, reaching the outlet of the right-side high-speed pulse burner 300 on the opposite side. The two paths of high-speed hot airflow from the right-side high-speed pulse burner 300 flow along the kiln car loading stack 600 towards the outlets of the two left-side high-speed pulse burners 200 on the same side. The branch fire channel 700 formed between the product on the stack 600 and the kiln side wall moves towards the outlet of the two right high-speed pulse burners 300 on the same side of the adjacent front and rear main fire channels 701. The third stream of hot air jetted from the right high-speed pulse burner 300 moves upward along the kiln side wall and reaches the outlet of the left high-speed pulse burner 200 on the opposite side. When the next pulse cycle arrives, the high-speed hot air jet will participate in the high-speed hot air jet ejected from the outlet of the next adjacent left high-speed pulse burner 200 or right high-speed pulse burner 300, and perform relay motion, continuously cycling with the pulse cycle.

[0101] In some embodiments, controlling all left-side high-speed pulse burners 200 and all right-side high-speed pulse burners 300 to operate alternately according to a pulse timing curve, so that each side of each kiln car loading stack 600 forms a hot airflow stirring and circulating fire channel, including:

[0102] Each kiln car loading stack 600 has multiple product layers distributed vertically and horizontally. Each kiln car loading stack 600 has two branch fire channels 700 and two main fire channels 701 around its perimeter. High-temperature hot air diffusion channels are also formed in the gaps between the products in each product layer.

[0103] In some embodiments, when the actual measured temperature on the right side of any one of the right-side temperature sensors in the kiln deviates from the preset temperature, the corresponding left-side high-speed pulse burner 200 can use a single-point proportional fine-tuning temperature balancing system to gradually bring the actual measured temperature on the right side closer to the preset temperature, including:

[0104] When the actual measured temperature on either side is lower than the preset temperature, while maintaining the stirring of the pulse burners on both sides according to the pulse sequence, the temperature single-point proportional fine-tuning balance system closes the vent valve on the combustion air feedback pipe of the corresponding left high-speed pulse burner to increase the pressure in the combustion air feedback pipe of the air / fuel proportional valve of the corresponding left high-speed pulse burner. This increases the gas flow rate of the left high-speed pulse burner and the output heat power, which will inevitably make the actual measured temperature on the right side approach the preset temperature, thus achieving fine-tuning of the temperature deviation at that point.

[0105] When the actual measured temperature on either side exceeds the preset temperature, while maintaining the pulse burners on both sides stirring according to the pulse sequence, the temperature single-point proportional fine-tuning balance system opens the vent valve on the combustion air feedback pipe of the corresponding high-speed pulse burner to reduce the pressure in the combustion air feedback pipe of the air / fuel proportional valve of the corresponding left high-speed pulse burner. This reduces the gas flow rate of the left high-speed pulse burner and decreases the output heat power, which will inevitably cause the actual measured temperature on the right side to approach the preset temperature, thus achieving fine-tuning of the temperature deviation at that point.

[0106] In some embodiments, when the actual temperature measured by any left-side temperature sensor of the kiln deviates from the preset temperature, the corresponding right-side high-speed pulse burner 300 can use a single-point proportional fine-tuning balance system to gradually bring the actual measured temperature on the left side closer to the preset temperature, including:

[0107] When the actual measured temperature on the left side is lower than the preset temperature, while keeping the pulse burners on both sides stirring according to the pulse sequence, the temperature single-point proportional fine-tuning balance system closes the vent valve of the corresponding high-speed pulse burner to increase the pressure in the combustion air feedback pipe of the air / fuel ratio valve of the corresponding high-speed pulse burner on the right side. This increases the gas flow of the high-speed pulse burner on the right side and increases the output heat power, which will inevitably make the actual measured temperature on the left side approach the preset temperature, thus achieving fine-tuning of the temperature deviation at that point.

[0108] When the actual measured temperature on either side exceeds the preset temperature, while maintaining the pulse burners on both sides stirring according to the pulse sequence, the temperature single-point proportional fine-tuning balance system opens the vent valve on the combustion air feedback pipe of the corresponding high-speed pulse burner on the right side. This reduces the pressure in the combustion air feedback pipe of the air / fuel proportional valve of the corresponding high-speed pulse burner on the right side, thereby reducing the gas flow rate of the high-speed pulse burner on the right side and reducing the output heat power. This will inevitably cause the actual measured temperature on the left side to approach the preset temperature, thus achieving fine-tuning of the temperature deviation at that point.

[0109] The burner layout of this invention is not limited to... Figure 1 The three-dimensional, triangular arrangement shown can also be arranged only on the lower part of the two side walls of the kiln; or the burners on one side wall can be arranged at the lower part, and the burners on the other side wall at the upper part; or they can be arranged only on the upper part of the two side walls of the kiln. Regardless of how the burners are arranged according to the needs of the firing process, as long as the single-sided pulse plus single-point fine-tuning balance combustion control method remains unchanged, it will be consistent with... Figure 1 The burner arrangement method has similar operating effects.

[0110] The present invention also provides a kiln (including a temperature control zone of intermittent and continuous kilns) including the single-sided pulse plus single-point fine-tuning balanced combustion control system described in the above embodiments.

[0111] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A method for balanced combustion control using a single-sided pulse and single-point fine-tuning, characterized in that, This invention is applied to a kiln. The left wall of the kiln is equipped with multiple left-side high-speed pulse burners and multiple left-side temperature sensors. Each left-side high-speed pulse burner contains a built-in left-side permanent flame burner. All the left-side high-speed pulse burners on the left wall are connected in parallel to a left-side pulse valve. The right wall of the kiln is equipped with multiple right-side high-speed pulse burners and multiple right-side temperature sensors. Each right-side high-speed pulse burner contains a built-in right-side permanent flame burner. All the right-side high-speed pulse burners on the right wall are connected in parallel to a right-side pulse valve. The left-side and right-side high-speed pulse burners, arranged opposite each other on the left and right walls of the kiln, are symmetrically arranged in a three-dimensional, intersecting triangular pattern. Two adjacent left-side high-speed pulse burners are positioned at the top... The high-speed pulse burners on the right side are staggered vertically, with two adjacent burners on the front and back being staggered vertically. Multiple left-side temperature sensors are set up one-to-one with multiple right-side high-speed pulse burners. The left-side temperature sensors measure the combustion temperature of the corresponding right-side high-speed pulse burner. Multiple right-side temperature sensors are set up one-to-one with multiple left-side high-speed pulse burners. The right-side temperature sensors measure the combustion temperature of the corresponding left-side high-speed pulse burner. A kiln car loading stack is provided between two adjacent left-side high-speed pulse burners and two adjacent right-side high-speed pulse burners. Each left-side high-speed pulse burner and each right-side high-speed pulse burner is equipped with an independent single-point proportional fine-tuning balance system. The control method includes: When the kiln is started, the permanent flame burner built into the high-speed pulse burner on the left side of the kiln and all the permanent flame burners built into the high-speed pulse burner on the right side of the kiln are ignited and kept running. After the kiln is started, it simultaneously executes temperature, pressure, and pulse timing curves to control the left and right pulse valves of the kiln to enter the working state. The left and right pulse valves operate alternately according to the pulse timing signal. When the pulse timing signal arrives, if the left pulse valve is set to open and the right pulse valve remains closed, all left high-speed pulse burners operate at a first preset output power, and all right high-speed pulse burners operate at a second preset output power, where the first preset output power is greater than the second preset output power. When the pulse timing signal arrives, if the right pulse valve is set to open and the left pulse valve remains closed... In the off state, all the right-side high-speed pulse burners operate at the first preset output power, while all the left-side high-speed pulse burners operate at the second preset output power, where the first preset output power is greater than the second preset output power. From this point on, all the left-side high-speed pulse burners and all the right-side high-speed pulse burners operate alternately according to the pulse timing curve, so that each side of each kiln car loading stack forms a hot airflow stirring circulation fire channel. The circulation fire channel includes the branch fire channel between the kiln car loading stack and the left and right kiln walls of the kiln, the main fire channel between two kiln car loading stacks, and the main fire channel between the kiln car loading stack and the front and rear kiln walls of the kiln. Each of the left-side temperature sensors is controlled to measure the actual measured temperature on the left side, which is the combustion temperature of the right-side high-speed pulse burner corresponding to the left-side temperature sensor. Similarly, each of the right-side temperature sensors is controlled to measure the actual measured temperature on the right side, which is the combustion temperature of the left-side high-speed pulse burner corresponding to the right-side temperature sensor. A single-point proportional fine-tuning balance system compares each of the left-side actual measured temperatures with a preset temperature in real time according to a sampling frequency preset by the control system. When the actual measured temperature on the right side of any of the right-side temperature sensors is not equal to the preset temperature, the single-point proportional fine-tuning balance system will be activated. If the actual measured temperature on the right side is less than the preset temperature, while keeping the single-sided pulse stirring timing curve unchanged, the single-point proportional fine-tuning balance system will control the vent valve on the combustion air pressure feedback pipe of the air / fuel proportional valve corresponding to the left-side high-speed pulse burner to gradually close until the actual measured temperature on the right side equals the preset value. If the actual measured temperature on the right side is greater than the preset temperature, while keeping the single-sided pulse stirring timing unchanged, the single-point proportional fine-tuning balance system will control the vent valve on the combustion air pressure feedback pipe of the air / fuel proportional valve corresponding to the left-side high-speed pulse burner to gradually open until the actual measured temperature on the right side equals the preset value. When the actual measured temperature on the left side of any of the left-side temperature sensors is not equal to the preset temperature, if the actual measured temperature on the left side is less than the preset temperature, while keeping the single-sided pulse stirring timing curve unchanged, the temperature single-point proportional fine-tuning balance system controls the vent valve on the combustion air pressure feedback pipe of the air / fuel proportional valve corresponding to the right-side high-speed pulse burner to gradually close until the actual measured temperature on the left side equals the preset value; if the actual measured temperature on the left side is greater than the preset temperature, while keeping the single-sided pulse stirring timing unchanged, the temperature single-point proportional fine-tuning balance system controls the vent valve on the combustion air pressure feedback pipe of the air / fuel proportional valve corresponding to the right-side high-speed pulse burner to gradually open until the actual measured temperature on the left side equals the preset value.

2. The single-sided pulse plus single-point fine-tuning balanced combustion control method according to claim 1, characterized in that, The control of all the left-side high-speed pulse burners and all the right-side high-speed pulse burners to operate alternately according to the pulse timing curve, so that each side of each kiln car loading stack forms a hot airflow stirring and circulating fire channel, including: The time during which the left high-speed pulse burner operates at the first preset output power is equal to the time during which the left high-speed pulse burner operates at the second preset output power; or, according to process requirements, the time during which the burner operates at the first preset output power is not equal to the time during which it operates at the second preset output power. The time during which the right high-speed pulse burner operates at the first preset output power is equal to the time during which the right high-speed pulse burner operates at the second preset output power. Alternatively, depending on the process requirements, the operating time of the burner at the first preset output power may not be equal to the operating time at the second preset output power.

3. The single-sided pulse plus single-point fine-tuning balanced combustion control method according to claim 1, characterized in that, The control of all the left-side high-speed pulse burners and all the right-side high-speed pulse burners to operate alternately according to the pulse timing curve, so that each side of each kiln car loading stack forms a hot airflow stirring and circulating fire channel, including: The high-speed hot air jets ejected from the left and right high-speed pulse burners at both ends of the kiln reach the opposite kiln sidewall. The high-speed hot air jets from the upper left or right high-speed pulse burner then split into two paths. One path moves along the branch flue between the product on the kiln car loading stack and the kiln sidewall towards the adjacent main flue, reaching the outlet of the left or right high-speed pulse burner located above the adjacent main flue on the same side. The other path moves downwards along the kiln wall, reaching the outlet of the lower left or right high-speed pulse burner. The high-speed hot airflow of the high-speed pulse burner is also divided into two paths. One path moves around the branch fire channel formed between the product on the kiln car loading stack and the kiln side wall towards the adjacent main fire channel, directly reaching the outlet of the left or right high-speed pulse burner located below the adjacent main fire channel on the same side. The other path moves upward along the kiln side wall, directly reaching the outlet of the left or right high-speed pulse burner above. When the next pulse cycle arrives and the burner flame state changes, the high-speed hot airflow will participate in the relay motion of the high-speed hot airflow ejected from the outlet of the adjacent left or right high-speed pulse burner, continuously cycling with the pulse cycle. The high-speed hot air streams ejected from the left and right high-speed pulse burners in the middle of the kiln reach the opposite kiln side wall. The high-speed hot air streams from either the upper left or right high-speed pulse burner then split into three streams. Two streams from the left high-speed pulse burner flow along the branch fire channel formed between the product on the kiln car loading stack and the kiln side wall towards the outlets of the two left high-speed pulse burners on the same side of the adjacent main fire channel. The third stream of hot air ejected from the left high-speed pulse burner… The flow moves downwards along the kiln sidewall, reaching the outlet of the right-side high-speed pulse burner on the opposite side below; wherein the two high-speed hot air streams ejected from the right-side high-speed pulse burner move along the branch fire channel formed between the product on the kiln car loading stack and the kiln sidewall to the outlets of the two right-side high-speed pulse burners on the same side of the main fire channel on the adjacent front and rear sides, and the third hot air stream ejected from the right-side high-speed pulse burner moves downwards along the kiln sidewall, reaching the outlet of the left-side high-speed pulse burner on the opposite side below; the left-side high-speed pulse burner located below or the The high-speed hot airflow from the right-side high-speed pulse burner is divided into three paths. Two of these paths, originating from the left-side high-speed pulse burner, flow along the branch fire channels formed between the product on the kiln car loading stack and the kiln side wall, towards the outlets of the two left-side high-speed pulse burners on the adjacent front and rear sides of the main fire channel. The third path, originating from the left-side high-speed pulse burner, flows upwards along the kiln side wall, reaching the outlet of the right-side high-speed pulse burner on the opposite side. The two paths of high-speed hot airflow from the right-side high-speed pulse burner flow along the product on the kiln car loading stack... The product and the kiln sidewall form a branch fire channel that moves to the outlet of the right high-speed pulse burner on the same side of the two main fire channels on the front and rear sides. The third stream of hot air ejected from the right high-speed pulse burner moves upward along the kiln sidewall and reaches the outlet of the left high-speed pulse burner on the opposite side. When the next pulse cycle arrives, the high-speed hot air will participate in the high-speed hot air ejected from the outlet of the next adjacent left high-speed pulse burner or right high-speed pulse burner, and perform a relay motion, continuously cycling with the pulse cycle.

4. The single-sided pulse plus single-point fine-tuning balanced combustion control method according to claim 1, characterized in that, The control of all the left-side high-speed pulse burners and all the right-side high-speed pulse burners to operate alternately according to the pulse timing curve, so that each side of each kiln car loading stack forms a hot airflow stirring and circulating fire channel, including: Each kiln car loading stack has multiple product layers spaced vertically apart. Each kiln car loading stack has two branch fire channels and two main fire channels around its perimeter. High-temperature hot air diffusion channels are also formed in the gaps between the products in each product layer.

5. The single-sided pulse plus single-point fine-tuning balanced combustion control method according to claim 1, characterized in that, When the actual measured temperature on the right side of any of the right-side temperature sensors in the kiln deviates from the preset temperature, the corresponding left-side high-speed pulse burner can use a single-point proportional temperature adjustment balancing system to gradually bring the actual measured temperature on the right side closer to the preset temperature, including: When any of the actual measured temperatures on the right side is lower than the preset temperature, while maintaining the stirring of the pulse burners on both sides according to the pulse sequence, the temperature single-point proportional fine-tuning balance system gradually closes the vent valve on the combustion air feedback pipe of the corresponding left high-speed pulse burner, thereby increasing the pressure in the combustion air feedback pipe of the air / fuel ratio valve of the corresponding left high-speed pulse burner. This increases the gas flow rate of the left high-speed pulse burner and increases the output heat power, which will inevitably make the actual measured temperature value on the right side approach the preset temperature, thus achieving fine-tuning of the temperature deviation at that point. When any of the actual measured temperatures on the right side exceeds the preset temperature, while maintaining the stirring of the pulse burners on both sides according to the pulse sequence, the temperature single-point proportional fine-tuning balance system opens the vent valve on the combustion air feedback pipe of the corresponding high-speed pulse burner to reduce the pressure in the combustion air feedback pipe of the air / fuel ratio valve of the corresponding left high-speed pulse burner. This reduces the gas flow rate of the left high-speed pulse burner and decreases the output heat power, which will inevitably cause the actual measured temperature value on the right side to approach the preset temperature, thus achieving fine-tuning of the temperature deviation at that point.

6. The single-sided pulse plus single-point fine-tuning balanced combustion control method according to claim 1, characterized in that, When any of the left-side temperature sensors in the kiln measures a temperature that deviates from the preset temperature, the corresponding right-side high-speed pulse burner can use a single-point proportional temperature adjustment balancing system to gradually bring the measured left-side temperature closer to the preset temperature, including: When any of the actual measured temperatures on the left side is lower than the preset temperature, while maintaining the stirring of the pulse burners on both sides according to the pulse sequence, the temperature single-point proportional fine-tuning balance system gradually closes the vent valve of the corresponding high-speed pulse burner to increase the pressure in the combustion air feedback pipe of the air / fuel ratio valve of the corresponding high-speed pulse burner on the right side. This increases the gas flow rate of the high-speed pulse burner on the right side and increases the output heat power, which will inevitably make the actual measured temperature value on the left side approach the preset temperature, thus achieving fine-tuning of the temperature deviation at that point. When any of the actual measured temperatures on the left side exceeds the preset temperature, while maintaining the pulse burners on both sides stirring according to the pulse sequence, the temperature single-point proportional fine-tuning balance system opens the vent valve on the combustion air feedback pipe of the corresponding high-speed pulse burner on the right side to reduce the pressure in the combustion air feedback pipe of the air / fuel ratio valve of the corresponding high-speed pulse burner on the right side. This reduces the gas flow rate of the high-speed pulse burner on the right side and decreases the output heat power, which will inevitably cause the actual measured temperature value on the left side to approach the preset temperature, thus achieving fine-tuning of the temperature deviation at that point.

7. A single-sided pulse plus single-point fine-tuning balanced combustion control system, characterized in that, For implementing the single-sided pulse plus single-point fine-tuning balanced combustion control method as described in any one of claims 1 to 6, the control system comprises: Combustion air main; The left-side combustion air branch pipe is connected to the main combustion air pipe, and all the left-side high-speed pulse burners are connected in parallel to the left-side combustion air branch pipe; The right-side combustion air branch pipe is connected to the main combustion air pipe, and all the right-side high-speed pulse burners are connected in parallel to the right-side combustion air branch pipe; The left pulse valve is located between the main combustion air pipe and the left combustion air branch pipe; The right-side pulse valve is located between the main combustion air pipe and the right-side combustion air branch pipe.

8. The single-sided pulse plus single-point fine-tuning balanced combustion control system according to claim 7, characterized in that, Each of the aforementioned left-side high-speed pulse burners includes: The left high-speed pulse burner body is provided with a left combustion air port that connects to the left combustion air branch pipe; Fuel enters the pipeline on the left side, connecting to the body of the high-speed pulse burner on the left side; The left-side air / fuel ratio valve is located in the left-side fuel inlet pipe; The left combustion air feedback pipe connects the left air / fuel ratio valve to the left combustion air branch pipe, and the left combustion air feedback pipe is equipped with a left exhaust valve.

9. The single-sided pulse plus single-point fine-tuning balanced combustion control system according to claim 7, characterized in that, Each of the aforementioned right-side high-speed pulse burners includes: The right high-speed pulse burner body is provided with a right combustion air port that connects to the right combustion air branch pipe; Fuel enters the pipeline on the right side, connecting to the body of the high-speed pulse burner on the right side; The right-side air / fuel ratio valve is located in the right-side fuel inlet pipe; The right-side combustion air feedback pipe connects the right-side air / fuel proportional valve to the right-side combustion air branch pipe, and the right-side combustion air feedback pipe is equipped with a right-side vent valve.

10. A kiln, characterized in that, Including the single-sided pulse plus single-point fine-tuning balanced combustion control system as described in any one of claims 7 to 9.

Images