Burner three-dimensional temperature field reconstruction equipment based on infrared radiation

Abstract

The invention relates to the technical field of combustors, in particular to combustor three-dimensional temperature field reconstruction equipment based on infrared radiation, a flame stabilizing plate is controlled by an infrared thermometer to rotate air holes so as to limit the speed of combustion gas, and the flame stabilizing plate is connected with a flow dividing assembly through a transmission mechanism. The flow distribution assembly gradually regulates and controls the flow of a burner nozzle through internal swing, the flow distribution assembly penetrates through the burner body to be connected with a material spraying assembly, the material spraying assembly gradually switches the fuel spraying mode through rotation so as to control temperature field fuel distribution, the material spraying assembly and the flow distribution assembly are synchronously switched, and the temperature field fuel distribution is controlled. Therefore, the temperature field of the combustor is adjusted.

Description

Technical Field

[0001] This invention relates to the field of burner technology, and more specifically to a burner three-dimensional temperature field reconstruction device based on infrared radiation. Background Technology

[0002] A burner is a key component that converts the chemical energy of fuel into thermal energy. Boiler burners are used to supply heat energy or drive the fluids required inside the boiler. In order to avoid damage to the burner during boiler use, infrared radiation thermometry is used to detect the temperature field inside the burner. As a typical non-contact temperature measurement method, infrared radiation thermometry can monitor the combustion of the flame inside the burner in real time and has the advantages of fast response speed and wide temperature measurement range.

[0003] When using a boiler, a burner is needed to supply heat energy or drive the fluid required by the boiler. When the boiler burner is in use, it is necessary to monitor the combustion status and temperature field of the flame inside the furnace at all times. After the flame inside the burner is detected by infrared radiation thermometry, the change in wind speed at the nozzles of the four corner burners causes the temperature field of the flame inside the burner to shift. The temperature field shift causes the furnace to be unable to achieve stable tangential combustion, and the flame temperature field shift causes uneven temperature inside the furnace.

[0004] When the boiler burner flame temperature field shifts, the uneven temperature inside the furnace causes one side to be too hot. The water-cooled wall on the side with the excessively high temperature will rupture due to overheating. After the water-cooled wall ruptures, the boiler cannot be effectively cooled, which will lead to the need to shut down the boiler for maintenance and replacement. At the same time, the high temperature field shift will cause one side of the burner to be close to the high-temperature flame. The burner nozzle will be deformed due to high temperature and overheating, which will aggravate the temperature field shift and even damage the burner nozzle.

[0005] Therefore, in order to ensure the stable and efficient operation of the burner, existing technologies often install a matching temperature monitoring system inside the burner. The burner temperature monitoring system can monitor the temperature of the flame inside the burner to achieve timely regulation. However, when the temperature field deviates, the furnace needs to be shut down for adjustment in order to ensure the stable and efficient operation of the burner.

[0006] To address the aforementioned technical problems, this invention presents a burner three-dimensional temperature field reconstruction device based on infrared radiation. Summary of the Invention

[0007] This invention provides a burner three-dimensional temperature field reconstruction device based on infrared radiation. By receiving feedback from an infrared thermometer, the device adjusts the fuel injection area of ​​the burner nozzle to ensure the stability of the flame temperature field, thus solving the problem of needing to shut down the furnace for adjustment due to the deviation of the flame temperature field inside the burner.

[0008] This invention provides a three-dimensional temperature field reconstruction device for a burner based on infrared radiation, comprising a furnace, a burner body, an infrared thermometer, and a burner nozzle. It also includes a flame stabilizing plate, a fuel injection assembly, and a flow-diverting assembly. The flame stabilizing plate is rotatably mounted on the burner nozzle and has air holes for stabilizing the ejected flame. The flame stabilizing plate rotates the air holes under the control of the infrared thermometer, which monitors the flame temperature field in the burner in real time. When the flame temperature field deviates, causing excessively high temperatures on one side, the flame stabilizing plate rotates the air holes under the control of a motor. The air hole diameter switches, limiting the fuel velocity, thereby adjusting the shape and position of the flame ejected from the burner nozzle, and thus controlling the combustion efficiency of the burner body. The flame stabilizing plate is connected to the flow-diverting assembly via a transmission mechanism. The flow-diverting assembly gradually controls the flow rate at the burner nozzle through internal oscillation, thereby reducing the temperature. The high-temperature side temperature is gradually adjusted by controlling the fuel flow rate on the high-temperature side of the burner body to ensure its stability. The flow-diverting component is connected to the fuel injection component through the burner body. The fuel injection component rotates to gradually switch the fuel from straight injection to mist injection, avoiding the concentration of heat from the fuel injected by the fuel injection component. This disperses the fuel at the superheated end and reduces the temperature at the superheated end of the burner. At the same time, the fuel injection flow rate of the fuel injection component on the opposite side of the four corner burners increases, thereby raising the temperature at the lower end of the burner and ensuring the stability of the temperature field inside the boiler. The fuel injection component and the flow-diverting component switch synchronously. The rotation of the flame stabilizer plate gradually changes the fuel flow rate and injection mode, thereby controlling the flow-diverting component and the fuel injection component at the same frequency. This adjusts the burner temperature field and achieves real-time adjustment of the burner temperature field, ensuring stable combustion inside the burner.

[0009] Preferably, the flow-dividing assembly includes a flow-dividing plate, a sliding rod, a flow-dividing pipe, and a spiral feed tube. The flow-dividing pipe is fixedly installed on the side wall of the burner nozzle, flows through the interior of the burner nozzle, and is located at the rear end of the flame stabilizer plate. The flow-dividing pipe is L-shaped, with the vertical section of the L-shape pointing towards the center of the flame temperature field. An arc-shaped slide rail is provided at the connection between the flow-dividing pipe and the burner nozzle. The spiral feed tube is fixedly installed in the furnace below the flow-dividing pipe, with its bottom outlet leading to the center of the furnace. This allows unburned material to spiral down and ultimately converge at the high-temperature center of the temperature field. Complete combustion at the furnace reduces harmful exhaust emissions while maximizing fuel utilization to avoid waste, improving energy efficiency, and controlling the temperature field center to remain stable. The spiral feed tube changes the descent of fuel, transforming vertically descending fuel accumulated in the corners of the furnace into spirally descending fuel guided to the center of the furnace, thus accumulating fuel for complete combustion. The diverter plate is rotatably installed at the connection port between the diverter pipe and the burner nozzle. Initially, the diverter plate seals the diverter pipe opening, blocking it. The diverter plate and sliding rod are rotatably installed; the rotation of the sliding rod causes the diverter plate to slide. One end of the sliding rod is hinged to one end of the flow divider plate. The portion of the sliding rod away from the flow divider plate is rotatably mounted on the inner wall of the burner nozzle. The flame stabilizer plate controls the rotation of the sliding rod via a bevel gear set and a crank-slider mechanism. The rotation of the flame stabilizer plate causes the sliding rod to slide up and down. As the flame stabilizer plate gradually rotates to adjust the diameter of the air hole, it pushes the sliding rod. The sliding rod slides inside the burner nozzle and drives the flow divider plate to slide. The flow divider plate gradually slides and slowly opens the flow divider pipe opening, thereby achieving precise flame control according to changes in the temperature field, thus ensuring a uniform and stable flame temperature field. The sliding rod relies on the gradual rotation of the flame stabilizer plate... The sliding control of the flow divider plate gradually switches the diameter of the flow divider pipe and the burner nozzle, changing the fuel injection flow rate and the fuel injection position and area. The flow divider plate gradually slides, thereby gradually opening the flow divider pipe opening and gradually reducing the feed diameter of the burner nozzle, thus reducing the amount of fuel injected from the burner nozzle. This achieves regulation of the temperature field inside the furnace, ensuring a stable and smooth temperature field in the furnace. At the same time, the flow divider plate tilts at a certain angle to form a baffle inside the pipe, slowing down the high-speed impact of the fuel and causing the fuel to form a vortex. The fuel is fully mixed with oxygen and air for combustion, avoiding the generation of harmful gases from incomplete combustion.

[0010] Preferably, the spraying assembly includes a dispensing disc, a spraying blade, an adjusting plate, and a push rod. The dispensing disc is butterfly-shaped and has dispensing holes. The dispensing disc is fixedly installed at the spraying end of the distributor pipe. The dispensing holes distribute the fuel transported in the distributor pipe into streams, achieving thorough mixing of fuel and oxygenated air, and ensuring that the fuel fills the spraying blade. The dispensing disc also accelerates the distributed fuel. An adjusting plate is rotatably installed on the outer wall of the front end of the distributor pipe. The adjusting plate is made of high-temperature resistant material and protects the spraying port of the distributor pipe from contamination. To prevent unburned fly ash and coke from clogging the furnace, and to ensure normal fuel injection from the distributor pipe, a telescopic hole is provided on the distributor pipe. An adjusting plate covers the telescopic hole to prevent fly ash and coke from entering. A fuel injector is slidably installed at the fuel inlet of the distributor pipe, with a telescopic plate installed inside. Rotation of the fuel injector causes the telescopic plate to extend beyond the distributor pipe wall, thereby pushing the adjusting plate. The fuel injector always remains in contact with the telescopic hole on the distributor pipe, preventing fuel from exiting through the telescopic hole. The fuel injector has three layers; the middle layer is equipped with a telescopic plate... The telescopic plate, controlled by the top control plate, extends outwards by sliding a pin on its side against an arc-shaped groove on the control plate as the control plate rotates. This extension changes the fuel inlet position of the spray blade, opening the middle layer of the spray blade and simultaneously blocking the original straight cylindrical spray inlet, thus altering the shape of the spray inlet and consequently changing the fuel ejection pattern. Simultaneously, as the spray blade unfolds, the telescopic plate pushes open the adjusting plate outwards, gradually changing it from an inward-sloping shape to an inverted umbrella shape, thereby controlling the shape and position of the fuel ejection and delivering the fuel to… The temperature field of the furnace is adjusted by different regions. The center of the spray plate has a threaded hole, and a push rod is rotatably installed at the thread of the spray plate. The push rod is threaded and the thread of the push rod cooperates with the thread of the spray plate to realize that the spray plate rotates and rises at the same time. The flow divider slides and rotates the push rod synchronously, thereby controlling the rotation of the spray plate to gradually change the size of the spray nozzle, thereby changing the flow rate of the sprayed fuel. The spray plate uses a sliding opening and closing adjustment plate to switch the spray nozzle style from a straight nozzle to a three-slot nozzle, thereby controlling the fuel injection mode and spraying speed.

[0011] Preferably, blunt blocks are provided at both ends of the flow divider away from the burner nozzle. The blunt blocks are conical in shape and are non-streamlined. After sliding with the flow divider, the blunt blocks generate eddies in the flow divider tube, thereby changing the fuel flow pattern from a steady direct flow to a turbulent flow, thus ensuring that the fuel is fully mixed and preventing the flame ejected from the fuel injector from going out.

[0012] Preferably, the flow divider plate has a sliding groove at one end facing the flow divider tube. The sliding groove consists of a spherical groove and a straight groove. The depth of the straight end of the sliding groove is lower than the depth of the spherical section. The slider of the transmission mechanism that controls the rotation of the push rod is attached to the sliding groove, so that the rotation of the flow divider plate controls the rotation of the push rod. The sliding groove uses the internal height difference to control the direction of the push rod, thereby adjusting the spraying position of the spraying plate. This allows the spraying mode of the spraying plate to be switched again to reconstruct the temperature field when the burner nozzle temperature is too high.

[0013] Preferably, the material distribution plate is disc-shaped, and the material distribution holes on the material distribution plate are frustoconical through holes. The diameter of the frustoconical material distribution holes facing the spray plate is smaller than the diameter of the side connected to the distributor plate, so that the fuel flows from the larger opening to the smaller opening, thereby increasing the fuel flow rate. This achieves staged pressurization of the decelerated fuel in the distributor pipe, ensuring that the fuel can be smoothly sprayed out from the spray plate and does not remain in the distributor pipe, causing blockage.

[0014] Preferably, the section connecting the diverter pipe and the burner nozzle is inclined, and the inclination angle is acute. The acute inclination can control the fuel blown in a straight line to flow smoothly and evenly into the diverter pipe, thereby changing the flow trajectory of the fuel entering the diverter pipe. The flow trajectory of the fuel that crashes vertically into the diverter pipe is transformed into a smooth flow along the inclination angle, thereby reducing the fuel kinetic energy loss, evenly diverting the fuel, and thus controlling the volume of fuel flowing into the injector blade.

[0015] Preferably, the regulating plate includes a vertical section and an inclined section. Both the vertical and inclined sections are concave arc-shaped plates, while the other section slopes inward to prevent fly ash from accumulating and falling into the diversion pipe, thus preventing blockage. The concave arc-shaped plate collects fuel in the middle after unfolding, thereby gathering fuel from both ends. The inward inclined section connects to the spiral feed pipe after unfolding, thereby conveying the collected fuel to the spiral feed pipe and sending it to the center of the furnace for combustion, thus achieving temperature regulation of the furnace temperature field.

[0016] The beneficial effects of this invention are as follows:

[0017] 1. The present invention provides a three-dimensional temperature field reconstruction device for burners based on infrared radiation. By receiving feedback from an infrared thermometer, the device adjusts the injection area of ​​the burner nozzle to ensure the stability of the flame temperature field. It also adjusts the temperature distribution of the temperature field in real time to ensure stable operation of the boiler and burner, and maintains efficient and stable operation at all times.

[0018] 2. The present invention provides a burner three-dimensional temperature field reconstruction device based on infrared radiation, which controls the feed diameter of the splitter pipe and the burner nozzle by sliding the splitter plate, thereby controlling the fuel injection area and flow rate, thus avoiding the burner being damaged by high temperature on one side due to temperature field deviation, and at the same time, the splitter plate has blunt blocks at both ends.

[0019] 3. The present invention provides a burner three-dimensional temperature field reconstruction device based on infrared radiation, which gradually rotates and moves the spray plate upward at the same frequency, while the spray plate unfolds and changes the spraying mode of the spray nozzle, thereby ensuring that the split fuel is far away from the high temperature area of ​​the temperature field, realizing the gradual correction of the temperature field after the deviation, and realizing the regulation of the temperature inside the burner. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are one embodiment of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is an overall schematic diagram of the invention;

[0022] Figure 2 This is the main view of the present invention;

[0023] Figure 3 This is the sectional view AA in the main view of the present invention;

[0024] Figure 4 This is a top view of the present invention;

[0025] Figure 5 This is a top view and a cross-sectional view along BB of the present invention.

[0026] Figure 6 This is an isometric view of the assembly of the spraying component and the flow splitting component of the present invention.

[0027] Figure 7 This is a top view of the spraying assembly of the present invention;

[0028] Figure 8 This is a top view of the spraying assembly of the present invention, and a cross-sectional view along CC.

[0029] In the diagram: 1. Furnace chamber; 2. Infrared thermometer; 3. Burner nozzle; 4. Flame stabilizer plate; 41. Rotating plate; 42. Fixed plate; 5. Diverter assembly; 51. Diverter plate; 511. Blunt block; 512. Sliding groove; 513. Slide rail; 52. Sliding rod; 53. Diverter pipe; 531. Telescopic hole; 532. Arc-shaped slider; 54. Spiral feed tube; 6. Spraying assembly; 61. Distributor plate; 611. Distributor hole; 62. Spraying plate; 621. Telescopic plate; 622. Three-slot nozzle; 623. Rotating wheel; 624. Limiting slide rail; 625. Moving plate; 63. Adjusting plate; 64. Push rod. Detailed Implementation

[0030] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0031] like Figure 1 As shown, a three-dimensional temperature field reconstruction device for a burner based on infrared radiation includes a burner body, an infrared thermometer 2, and a burner nozzle 3. It also includes a flame stabilizer plate 4, a fuel injection assembly 6, and a flow splitter assembly 5. The flame stabilizer plate 4 is rotatably mounted on the burner nozzle 3. The flame stabilizer plate 4 has air holes for stabilizing the ejected flame. The flame stabilizer plate 4 is divided into a fixed plate 42 and a rotating plate 41. Initially, the air holes on the fixed plate 42 and the rotating plate 41 are aligned. The flame stabilizer plate 4 is controlled by the infrared thermometer 2 to rotate the air holes. The rotation of the rotating plate 41 controls the air hole misalignment, thereby reducing the air hole diameter. The infrared thermometer 2 monitors the flame temperature field in the burner in real time. When the flame temperature field shifts, causing one side to become too hot, the flame stabilizer plate 4 is controlled by a motor to rotate the air holes. The motor uses a gear set to control the rotation of the rotating plate 41. The air holes on the rotating plate 41 and the fixed plate 42 are misaligned, thus switching the air hole diameter and limiting the fuel velocity. This adjusts the shape and position of the flame ejected from the burner nozzle 3, thereby controlling the combustion efficiency of the burner body. The flame stabilizer plate 4 is connected via a transmission mechanism. There is a flow divider assembly 5, which gradually controls the flow rate of the burner nozzle 3 through internal oscillation, thereby reducing the fuel flow rate on the high-temperature side and gradually regulating the temperature on the high-temperature side of the temperature field to ensure the stability of the burner body temperature field. The flow divider assembly 5 is connected to the injection assembly 6 through the burner body. The injection assembly 6 gradually switches the fuel injection mode by rotating, changing the fuel from linear injection to atomized spraying, avoiding the concentration of heat from the fuel injected by the injection assembly 6, thereby dispersing the fuel at the superheated end and reducing the temperature at the superheated end of the burner. At the same time, the injection flow rate of the injection assembly 6 on the opposite side of the four corner burners increases, thereby increasing the temperature at the low-temperature end of the burner and ensuring the stability of the temperature field inside the boiler. The injection assembly 6 and the flow divider assembly 5 switch synchronously. The flow rate and injection mode of the fuel are gradually changed by the rotation of the flame stabilizer plate 4, thereby achieving synchronous regulation of the flow divider assembly 5 and the injection assembly 6, thereby correcting the burner temperature field and realizing real-time adjustment of the burner temperature field to ensure stable combustion inside the burner.

[0032] After the boiler burner flame temperature field shifts, the uneven temperature in the furnace 1 causes one side to be too hot. The water-cooled wall in the furnace 1 on the side with the excessively high temperature will rupture due to overheating. After the water-cooled wall ruptures, the boiler cannot be effectively cooled, which will lead to the boiler having to be shut down for maintenance and replacement. At the same time, the high temperature field shift will cause one side of the burner to be close to the high-temperature flame. The burner nozzle 3 will be deformed due to high temperature and overheating, which will aggravate the temperature field shift and even cause the burner nozzle 3 to be damaged.

[0033] like Figure 3 and Figure 4As shown, the flow-dividing assembly 5 includes a flow-dividing plate 51, a sliding rod 52, a flow-dividing pipe 53, and a spiral feed pipe. The flow-dividing pipe 53 is fixedly installed on the side wall of the burner nozzle 3, and flows through the interior of the burner nozzle 3. The outlet of the flow-dividing pipe 53 is located at the rear end of the flame stabilizer plate 4. The flow-dividing pipe 53 is L-shaped, with the vertical section of the L-shaped flow-dividing pipe 53 pointing towards the center of the flame temperature field. An arc-shaped slider is provided at the connection between the flow-dividing pipe 53 and the burner nozzle 3. The spiral feed pipe is fixedly installed on the inner wall of the furnace 1 below the feed port of the flow-dividing pipe 53. The bottom outlet of the spiral feed pipe guides the fuel to the center of the furnace 1, thereby changing the unburned material from vertical to spiral fall and finally converging at the high-temperature center of the temperature field for complete combustion, thus achieving full combustion and reducing fuel consumption. While reducing harmful exhaust emissions, it fully utilizes fuel to avoid waste, improves energy efficiency, and controls the temperature field center to remain stable. The spiral feed tube changes the movement of the descending fuel, transforming the vertically descending fuel accumulated in the corner of the furnace 1 into a spiral descent that guides it to the center of the furnace 1, thereby accumulating fuel for complete combustion. The diverter plate 51 is slidably installed at the connection port between the diverter pipe 53 and the burner nozzle 3. Initially, the diverter plate 51 is sealed at the opening of the diverter pipe 53, blocking the diverter pipe 53. The diverter plate 51 has a slide rail 513 on the end face of the diverter pipe 53 that connects and cooperates with the arc-shaped slider. The diverter plate 51 slides using the slide rail 513 and the arc-shaped slider. The diverter plate 51 and the sliding rod 52 are rotatably installed, and the rotation of the sliding rod 52... The flow divider 51 slides, and one end of the sliding rod 52 is hinged to one end of the flow divider 51. The maximum hinge rotation angle at the hinge point between the sliding rod 52 and the flow divider 51 is 30°. After rotating to the maximum angle, the sliding rod 52 controls the flow divider 51 to slide, thereby realizing the flow divider 51 to divide the fuel. The part of the sliding rod 52 away from the flow divider 51 is rotatably mounted on the inner wall of the burner nozzle 3. The flame stabilizer 4 controls the sliding rod 52 to slide by a crank-slider mechanism. The rotation of the flame stabilizer 4 drives the sliding rod 52 to slide up and down. The flame stabilizer 4 gradually rotates to adjust the diameter of the air hole while pushing the sliding rod 52. The sliding rod 52 slides in the cavity of the burner nozzle 3 and drives the flow divider 51 to slide. The flow divider 51 gradually slides and slowly opens the opening of the flow divider pipe 53. To achieve precise flame control based on temperature field changes, thus ensuring a uniform and stable flame temperature field, the sliding rod 52 gradually slides along the flame stabilizer plate 4, controlling the flow divider plate 51 to gradually switch the diameter of the flow divider pipe 53 and the burner nozzle 3. This changes the fuel injection flow rate, position, and area. As the flow divider plate 51 gradually slides, it gradually opens the flow divider pipe 53 while gradually reducing the feed diameter of the burner nozzle 3, thereby reducing the amount of fuel ejected from the burner nozzle 3. This achieves temperature field control within the furnace 1, ensuring a stable and consistent temperature field. Simultaneously, the flow divider plate 51 tilts at a certain angle to form a baffle inside the pipe, mitigating the high-speed impact of the fuel and creating turbulence, allowing the fuel to fully mix and burn with oxygen-rich air.

[0034] like Figures 5 to 8As shown, the spraying assembly 6 includes a material distribution plate 61, a spraying blade 62, an adjusting plate 63, and a push rod 64. The material distribution plate 61 is butterfly-shaped, with a material distribution hole 611 at the center of the plate. The material distribution plate 61 is fixedly installed at the spraying end of the distributor pipe 53. The material distribution hole 611 feeds the fuel in the distributor pipe 53 in multiple streams, achieving full mixing of fuel and oxygen-air mixture and ensuring that the fuel fills the spraying blade 62. An adjusting plate 63 is rotatably installed at the front end of the distributor pipe 53. The adjusting plate 63 is made of high-temperature resistant material. Initially, the adjusting plate 63 is tilted inward to seal and protect the spraying port of the distributor pipe 53, preventing blockage caused by unburned fly ash and coking in the furnace 1, and ensuring normal spraying of the material from the distributor pipe 53. A sliding mechanism is installed inside the adjusting plate 63. The spray plate 62 has three layers and includes a rotating wheel 623, a movable plate 625, a telescopic plate 621, a limiting slide rail 624513, and three-slot nozzles 622. Multiple three-slot nozzles 622 are fixedly installed at the bottom layer of the spray plate 622. Each three-slot nozzle 622 is hollow and penetrates the bottom of the spray plate 62, spraying fuel flowing in from three different directions in a spray form. Simultaneously, the movable plate 625 is fixedly installed at the bottom layer of the spray plate 62. The movable plate 625 has a threaded hole at its center that connects to the threaded section of the push rod 64. When the push rod 64 rotates, the movable plate 625 drives the spray plate 62 forward along the diversion pipe 53. The limiting slide rail 624513 is installed in the middle layer of the spray plate 62, and slides on the limiting slide rail 624513. A telescopic plate 621 is installed, with a straight slot initially corresponding to the three-slot nozzle 622. Initially, the straight slot is connected to the three-slot nozzle 622. As the telescopic plate 621 unfolds, the straight slot and the three-slot nozzle 622 are misaligned, simultaneously opening the bottom layer of the initially closed spray plate 62, allowing fuel to flow in. The flowing fuel gradually changes from linear spraying from the straight slot nozzle to atomized spraying from the three-slot nozzle 622. A pin is fixedly installed on the telescopic plate 621, inserting into an arc-shaped groove on the rotating wheel 623. A threaded hole is opened in the center of the rotating wheel 623, which engages with the corresponding thread on the push rod 64. The initial distance between the rotating wheel 623 and the telescopic plate 621 is equal to the thread length of the push rod 64 at this point. As the disc 623 rotates, it moves forward. The rotation of the disc 623 drives the pin to slide in the arc-shaped groove, thereby controlling the telescopic plate 621 to unfold along the limiting slide rail 624513. As the telescopic plate 621 unfolds, the fuel feeding position in the spray plate 62 changes, thereby changing the shape of the spray inlet of the spray plate 62 from a straight groove nozzle to a three-groove nozzle 622, thus changing the fuel spraying condition. At the same time, as the telescopic plate 621 unfolds, it pushes the adjusting plate 63 outward, gradually pushing the adjusting plate 63 from an inward inclined shape to an inverted umbrella shape, thereby collecting fuel that is too close to the injection position and converging it to the center of the furnace 1. The fuel is sent to different areas of the furnace 1 to regulate the temperature field. A push rod 64 is rotatably installed at the threaded part of the moving plate 625 in the spray plate 62.A portion of the push rod 64 is threaded, and the thread of the push rod 64 engages with the thread of the spray plate 62 to achieve simultaneous rotation and lifting of the spray plate 62. The two threaded sections of the push rod 64 are of equal length. The movable plate 625 and the rotating wheel 623 can move synchronously at the threaded ends. When the diverter plate 51 slides, the push rod 64 is rotated synchronously by the crank slider and gear set. The diverter plate 51 is connected to a sliding rod that is restricted to a contact end face at the end face of the diverter pipe 53. When the sliding rod slides on the diverter plate 51, it is pushed forward by the diverter plate 51 due to the tilt of the diverter plate 51. The sliding rod slides, causing the connecting rod to swing. The swinging connecting rod controls the crank to rotate, which in turn drives the push rod 64 to rotate. The rotation of the push rod 64 controls the rotation of the rotating wheel 623, which in turn gradually changes the shape of the injection nozzle, thereby changing the flow rate and injection pattern of the fuel. The injection plate 62 uses a sliding opening and closing adjustment plate 63 to simultaneously switch the injection nozzle style of the injection plate 62, thereby controlling the fuel injection mode and spray speed, thus changing the fuel injection distance and spray position, and ultimately controlling the flame temperature field inside the furnace 1.

[0035] Blunt blocks 511 are provided at both ends of the flow divider 51 away from the burner nozzle 3. The blunt blocks 511 are conical in shape, which is not streamlined. After sliding with the flow divider 51, the conical blunt blocks 511 generate vortices in the flow divider tube 53, thereby changing the fuel flow pattern and changing the fuel from a steady direct flow to a turbulent flow. The fuel in the turbulent flow state is fully mixed with oxygenated air, ensuring that the fuel is fully mixed and will not fail to ignite due to lack of oxygen, thus preventing the flame ejected by the injector 62 from going out. At the same time, the conical blunt block 511 has a smooth curved surface, which reduces the energy loss caused by friction when the fuel flows through, ensuring that the fuel has sufficient kinetic energy and can be sprayed to the required position.

[0036] The flow divider plate 51 has a sliding groove 512 at one end facing the flow divider pipe 53. The sliding groove 512 consists of a spherical groove and a straight groove. The depth of the straight groove in the sliding groove 512 is lower than the depth of the spherical groove. The slider of the transmission mechanism that controls the rotation of the push rod 64 is attached to the sliding groove 512. Thus, the rotation of the flow divider plate 51 controls the rotation of the push rod 64. The flow divider plate 51 slides and tilts, pushing the slider on the end face of the transmission mechanism. The axial movement of the slider controls the rotation of the push rod 64 using a crank-slider mechanism. The sliding groove 512 uses the internal height difference to control the direction of the push rod 64, thereby adjusting the spray plate 6. 2. Injection position: When the temperature of burner nozzle 3 is too high, flame stabilizer plate 4 rotates to its minimum, and flow divider plate 51 slides until the slider slides into the spherical groove of sliding groove 512. At this time, the slider slides in the opposite direction, and push rod 64 reverses a small section. Push rod 64 reverses to control telescopic plate 621 to retract part of the slide. The diameter of the connection between the direct injection nozzle and the three-groove nozzle 622 increases, thereby increasing the amount of fuel sprayed in a straight line. While accelerating fuel spraying, it controls the temperature of the near-end temperature field, so as to realize the temperature field regulation and reconstruction by switching the injection mode of injection plate 62 again when the temperature of burner nozzle 3 is too high.

[0037] The feed tray 61 is dish-shaped, and the feed holes 611 on the feed tray 61 are frustoconical through holes. The diameter of the frustoconical feed holes 611 facing the spray plate 62 is smaller than the diameter of the side connected to the diverter plate 51, causing the fuel to flow from the larger opening to the smaller opening, thereby increasing the fuel flow rate. Simultaneously, because the feed tray 61 is dish-shaped, the initial diameter of the feed holes 611 at the central protrusion is larger than the diameter of the lower surrounding areas. Furthermore, the fuel passing through the corner of the diverter pipe 53 is decelerated due to collision, and the fuel flows from the diverter pipe 53 into the feed holes 611. The fuel is fed through the gradually decreasing diameter of the discharge orifice 611. The fuel is accelerated by entering the smaller orifice twice from the larger orifice, which ensures that the fuel can be ejected smoothly. At the same time, the length of the discharge orifice 611 at the protruding part is longer than that of the surrounding lower part, which ensures that more fuel in the middle can be accelerated for a longer time. This ensures that most of the fuel is fully accelerated, thereby realizing the staged pressurization of the decelerated fuel in the diversion pipe 53. This ensures that the fuel can be ejected smoothly from the spray plate 62, and that the fuel does not remain in the diversion pipe 53 and cause blockage.

[0038] The section connecting the diverter pipe 53 and the burner nozzle 3 is inclined at an acute angle, while the diverter pipe 53 itself has obtuse angles at both ends. The acute angle tilt can control the smooth and uniform flow of fuel blown in a straight line into the diverter pipe 53. The acute angle between the diverter pipe 53 and the burner nozzle 3 changes the flow trajectory of the fuel entering the diverter pipe 53, transforming the vertically impacting flow trajectory of the fuel into a smooth flow along the oblique angle. This reduces the impact of fuel diversion, which not only reduces the impact of fuel on the diverter plate 51 and extends the service life of the diverter plate 51, but also reduces the kinetic energy loss during the fuel flow process, ensuring smooth fuel injection. At the same time, it achieves uniform diversion, ensuring that fuel flows in from both sides without causing flameout or even backfire. This controls the quality of fuel flowing into the injector plate 62 and achieves stable control of the temperature field.

[0039] The regulating plate 63 includes a vertical section and an inclined section. The angle between the vertical section and the inclined section of the regulating plate 63 is an obtuse angle. Both the vertical section and the inclined section of the regulating plate 63 are concave arc-shaped plates. At the same time, another section is inclined inward and gradually narrows, and the width of the inclined end gradually decreases, blocking the diversion pipe 53 when it is not in operation, so as to prevent fly ash from caking and falling into the diversion pipe 53 and causing blockage. At the same time, after the concave arc-shaped plate is unfolded, it collects fuel in the middle, thereby gathering fuel from both ends. After the inward inclined section is unfolded, it is connected to the spiral feed pipe, and then the collected fuel is transported to the spiral feed pipe and sent to the center of the furnace 1 for combustion, thereby realizing the temperature regulation of the temperature field of the furnace 1.

[0040] When the boiler burner is in operation, the fan inside the burner blows oxygen-containing fuel to the burner nozzle 3. An infrared thermometer 2 is fixedly installed on the side wall of the burner body. The burner nozzle 3 stably and evenly sprays the fuel into the combustion zone of the furnace 1. At this time, the outlet of the diversion pipe 53 is closed. The fuel passes through the flame stabilizing plate 4 of the initial air hole by the blowing air. The fuel stabilized by the flame stabilizing plate 4 is ignited by the igniter and burns in the furnace 1, forming a stable temperature field. When the temperature field inside the boiler burner shifts due to airflow or burner malfunction, resulting in a situation where one side of the furnace 1 is high-temperature and the other side is low-temperature, the infrared thermometer 2 detects the change in the flame temperature field inside the furnace 1 and measures the temperature of the shifted temperature field. The high-side burner is controlled and adjusted. The infrared thermometer 2 transmits the acquired temperature information to the motor. The motor rotates to control the rotation of the flame stabilizer plate 4 and the gear of the wheel 623. The rotating plate 41 rotates with the gear, while the fixed plate 42 of the flame stabilizer plate 4 remains stationary. The rotation of the rotating plate 41 causes the air holes on the two plates to become misaligned and smaller. The smaller diameter of the air holes reduces the fuel injection flow rate and simultaneously sprays the fuel to a greater distance. As the rotating plate 41 rotates, it drives the bevel gear set to rotate. The rotation of the bevel gear drives the crank on the bevel gear shaft to rotate. The crank drives the connecting rod, which in turn drives the sliding rod 52 to slide. As the sliding rod 52 gradually slides, the diverter plate 51 slides accordingly, and the opening of the diverter pipe 53 gradually opens. When the diversion pipe 53 opens, the non-streamlined blunt block 511 on the diversion plate 51 turns the fuel into a vortex. The fuel containing oxygen gas is divided into two streams. One stream goes to the flame stabilizer 4 and continues to be sprayed out from the burner nozzle 3. The other stream enters the diversion pipe 53. The fuel passing through the diversion pipe 53 is first dispersed by the distribution plate 61. At the same time, the distribution hole 611 applies additional power to the dispersed fuel, increasing the fuel velocity. As the flame stabilizer 4 rotates, the sliding rod 52 slides and drives the push rod 64 located in the diversion pipe 53 to rotate. The rotation of the push rod 64 drives the moving plate 625 inside the spray plate 62 to rotate through the thread. The rotation of the moving plate 625 drives the spray plate 62 to move forward. At the same time as the spray plate 62 moves forward, the telescopic plate 621 on the spray plate 62 unfolds. The rotating wheel Rotation of 623 drives the telescopic plate 621 to gradually unfold. The unfolding of the telescopic plate 621 gradually opens the inner cavity. Some of the pressurized fuel entering the cavity is sprayed as a mist through the three-slot nozzle 622, while some enters along the straight slot to maintain a straight spray. At the same time, the spraying plate 62 rises and unfolds the adjusting plate 63. The adjusting plate 63 unfolds and collects the material that is not far from the spraying distance into the spiral feed tube. The spiral feed tube spirals down the collected material and finally gathers it in the middle of the furnace 1. The fuel sprayed by the spraying plate 62 gradually changes from a straight spray to a mist spray, reducing the temperature of the temperature field in the straight direction. When the flame stabilizing plate 4 rotates to the minimum diameter of the air hole, the telescopic plate 621 of the spraying plate 62 unfolds to the maximum, the motor shuts off and stops. At this time, the flame temperature field is continuously regulated.

[0041] As the fuel spray flow rate changes, the flame temperature field inside the furnace 1 is regulated and then stabilized. Once the temperature field stabilizes, the infrared thermometer 2 detects and obtains the information that the temperature field has stabilized. The infrared thermometer 2 then controls the motor to reverse. The reverse motor drives the flow divider 51 and the spray nozzle 62 to return to their original positions. After the flow divider 51 and the spray nozzle 62 are reset, the motor is turned off, and the burner continues to provide a stable flame to the furnace 1, maintaining the stability of the flame temperature field.

[0042] Specific embodiments of the present invention have been shown and described above in conjunction with the accompanying drawings. The above embodiments are merely exemplary descriptions and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions, and variations to the above embodiments within the scope of the present invention. All such modifications, alterations, substitutions, and variations should be included within the protection scope of the present invention without departing from the principles of the present invention.

Claims

1. A burner three-dimensional temperature field reconstruction device based on infrared radiation, comprising a furnace (1), an infrared thermometer (2), and a burner nozzle (3), characterized in that: It also includes a flame stabilizer (4), a flow divider (5), and a fuel injection assembly (6). The flame stabilizer (4) is rotatably mounted on the burner nozzle (3). The flame stabilizer (4) is controlled by an infrared thermometer (2) to rotate the air hole, thereby limiting the speed of the combustion gas. The flame stabilizer (4) is connected to the flow divider (5) through a transmission mechanism. The flow divider (5) gradually adjusts the flow rate of the burner nozzle (3) through internal oscillation. The flow divider (5) is connected to the fuel injection assembly (6) through the burner body. The fuel injection assembly (6) gradually switches the fuel from straight injection to mist injection by rotation, thereby controlling the fuel distribution in the temperature field. The fuel injection assembly (6) switches synchronously with the flow divider (5), thereby adjusting the burner temperature field.

2. The burner three-dimensional temperature field reconstruction device based on infrared radiation according to claim 1, characterized in that: The diversion assembly (5) includes a diversion plate (51), a sliding rod (52), a diversion pipe (53), and a spiral feed pipe. The diversion pipe (53) is fixedly installed on the side wall of the burner nozzle (3). The spiral feed pipe is fixedly installed in the furnace (1) below the diversion pipe (53). The spiral feed pipe gathers fuel by changing the vertical descent of the fuel to a spiral descent. The diversion plate (51) and the sliding rod (52) are rotatably installed. The diversion plate (51) is slidably installed at the connection port between the diversion pipe (53) and the burner nozzle (3). The sliding rod (52) gradually slides by relying on the rotation of the flame stabilizer plate (4). The diversion plate (51) gradually changes the diameter of the diversion pipe (53) and the burner nozzle (3), thereby changing the fuel injection position and area.

3. The burner three-dimensional temperature field reconstruction device based on infrared radiation according to claim 2, characterized in that: The spraying assembly (6) includes a material distribution plate (61), a spraying blade (62), an adjusting plate (63), and a push rod (64). The material distribution plate (61) is fixedly installed at the spraying end of the distributor pipe (53). The adjusting plate (63) is rotatably installed on the outer wall of the front end of the distributor pipe (53). The spraying blade (62) is slidably installed at the spraying port of the distributor pipe (53). The distributor pipe (53) has a telescopic hole. The adjusting plate (63) covers the telescopic hole. The telescopic plate (621) is installed inside the spraying blade (62). The spraying blade (62) rotates, causing the telescopic plate (621) to extend out of the pipe wall of the distributor pipe (53). The spraying blade (62) always fits against the distributor pipe. The telescopic hole on (53) pushes the adjustment plate (63) to unfold. The center of the spray plate (62) has a threaded hole. The spray plate (62) is rotatably mounted with a push rod (64) through the threaded hole. The push rod (64) is partially threaded. The push rod (64) rotates to control the spray plate (62) to rotate and rise at the same time. The diverter plate (51) slides and rotates the push rod (64) synchronously, thereby controlling the spray plate (62) to gradually change the size of the spray nozzle. The spray plate (62) uses the sliding opening and closing adjustment plate (63) to switch the spray nozzle style of the spray plate (62) from a straight nozzle to a three-slot nozzle (622), thereby controlling the fuel injection mode and spraying speed.

4. The burner three-dimensional temperature field reconstruction device based on infrared radiation according to claim 3, characterized in that: The two ends of the flow divider (51) are provided with blunt blocks (511) away from the burner nozzle (3). The blunt blocks (511) are conical. The blunt blocks (511) generate vortices by changing their positions, which prevents the flames ejected from the spray plate (62) and the flame stabilizer (4) from going out.

5. The burner three-dimensional temperature field reconstruction device based on infrared radiation according to claim 3, characterized in that: The diverter plate (51) has a sliding groove (512) at one end facing the diverter pipe (53). The sliding groove (512) is composed of a spherical groove and a straight groove. The sliding groove (512) uses the internal height difference to control the direction of the push rod (64), thereby adjusting the spraying position of the spraying plate (62).

6. The burner three-dimensional temperature field reconstruction device based on infrared radiation according to claim 5, characterized in that: The section connecting the diverter pipe (53) and the burner nozzle (3) is inclined and the inclination angle is acute, thereby changing the flow trajectory of fuel entering the diverter pipe (53) and thus controlling the volume of fuel flowing into the injector plate (62).

7. The burner three-dimensional temperature field reconstruction device based on infrared radiation according to claim 6, characterized in that: The material distribution plate (61) is disc-shaped, and the material distribution hole (611) opened on the material distribution plate (61) is a frustum-shaped through hole. The diameter of the frustum-shaped material distribution hole (611) facing the spray plate (62) is smaller than the diameter of the side connected to the splitter plate (51), thereby realizing the staged pressurization of the decelerated fuel in the splitter pipe (53).

8. The burner three-dimensional temperature field reconstruction device based on infrared radiation according to claim 1, characterized in that: The regulating plate (63) includes a vertical section and an inclined section. The angle between the vertical section and the inclined section of the regulating plate (63) is an obtuse angle. Both the vertical section and the inclined section of the regulating plate (63) are concave arc plates, which collect the fuel at both ends and then transport it to the spiral feed pipe to achieve temperature regulation of the furnace (1) temperature field.

Images