Flame monitoring device in microwave cracking furnace

Abstract

The utility model discloses a device for monitoring flames in a microwave cracking furnace, which particularly relates to the technical field of microwave cracking furnaces and comprises an outer shell, a mounting plate is fixedly arranged in the outer shell, an infrared and ultraviolet probe is in threaded connection with the interior of the mounting plate, and a cleaning mechanism is arranged on one side of the outer shell. The cleaning mechanism comprises two optical windows formed in the surface of the outer shell, quartz glass is fixedly arranged in the two optical windows, a guide rail is fixedly arranged on one side of the outer shell, and a heat insulation box is fixedly arranged on one side of the guide rail. The device isolates the external severe environment to protect internal parts, ensures light transmission to facilitate monitoring of the red and ultraviolet probes, effectively scrapes and cleans the surface of the quartz glass, removes dirt, always maintains good light transmission of the quartz glass, ensures that the red and ultraviolet probes accurately receive light, and improves the quality of the quartz glass. And the flame monitoring precision and the device operation stability are improved.

Description

Technical Field

[0001] This utility model relates to the field of microwave pyrolysis furnace technology, and more specifically, to a flame monitoring device inside a microwave pyrolysis furnace. Background Technology

[0002] In the processes of oil refining and natural gas processing, cracking furnaces are often used to decompose large hydrocarbon molecules into smaller products in order to obtain more valuable chemical raw materials or fuels. The flame state inside the microwave cracking furnace is crucial to the efficiency of the cracking reaction and the quality of the products. Flame monitoring devices can ensure the stable operation of the cracking process and ensure the high efficiency and safety of energy conversion.

[0003] In the existing technology, an observation window is installed on the top of the cracking furnace. When personnel are inspecting, they open the window to observe whether cracking has occurred inside the furnace. After the inspection is completed, the window is closed. However, this method has blind spots in monitoring and the personnel's response is more delayed, which cannot cope with emergency situations.

[0004] A search revealed that Chinese patent CN216349146U discloses a safety detection device and a pyrolysis furnace for a pyrolysis furnace. This structure uses a graphite target to conduct the temperature inside the pyrolysis zone of the pyrolysis furnace. The temperature of the graphite target is detected by an infrared thermometer to achieve the purpose of detecting the temperature inside the pyrolysis zone of the pyrolysis furnace. On the one hand, the graphite target has high heat resistance and a long service life. On the other hand, it directly detects the temperature inside the pyrolysis zone of the pyrolysis furnace, resulting in more accurate and faster data feedback. In addition, by filling the detection window with inert gas, it is possible to prevent the accumulation of carbon soot inside the furnace in the detection window, which would obstruct the detection light of the infrared thermometer and ensure the accuracy of temperature detection.

[0005] However, in actual use, during the pyrolysis process, various pollutants such as dust, oil, and carbon deposits are generated inside the furnace. These pollutants easily adhere to the probe and outer shell of the infrared thermometer, which can block the optical window of the probe, reduce the sensitivity and accuracy of the sensor in receiving signals, and thus lead to deviations in the monitoring data. Utility Model Content

[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides a flame monitoring device in a microwave pyrolysis furnace to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A flame monitoring device for a microwave pyrolysis furnace includes an outer shell, an installation plate fixedly disposed inside the outer shell, an infrared ultraviolet probe threadedly connected inside the installation plate, and a cleaning mechanism disposed on one side of the outer shell.

[0009] The cleaning mechanism includes two optical windows on the surface of the outer casing, each containing a fixed piece of quartz glass. A guide rail is fixedly mounted on one side of the outer casing, and a heat insulation box is fixedly mounted on one side of the guide rail. A micro stepper motor is fixedly installed inside the heat insulation box, and a heat-conducting plate is fixedly mounted on one side of the micro stepper motor. A threaded shaft is fixedly mounted on the output end of the micro stepper motor, with one end of the threaded shaft passing through the guide rail and rotatably connected to the inner wall of the guide rail. A slider is slidably connected inside the guide rail, and one end of the threaded shaft passes through the slider and is threadedly connected to it. A guide plate is fixedly mounted on one side of the slider, and a silicone scraper is fixedly mounted on one side of the guide plate. A connecting plate is fixedly mounted on one end of the silicone scraper. A guide groove is formed on the surface of the outer casing, located on one side of the optical window. The connecting plate is slidably connected to the guide groove, and a mounting groove is formed on the surface of the connecting plate, with a roller rotatably mounted inside the mounting groove.

[0010] By adopting the above technical solution, the internal components are isolated from harsh external environments, while light transmission is ensured for monitoring by the red and ultraviolet probes. Moreover, the silicone scraper can accurately and smoothly scrape and clean the surface of the quartz glass, effectively removing dirt and maintaining the good light transmittance of the quartz glass. This ensures that the red and ultraviolet probes accurately receive light, improving the accuracy of flame monitoring and the stability of device operation.

[0011] As a further description of the above technical solution: the outer casing is provided with a heat-resistant mechanism, which includes a sealing ring fixedly disposed on one side of the outer casing. A sealing cover is fitted inside the sealing ring. An air inlet pipe and an air outlet pipe are provided through the top of the sealing cover. The air inlet pipe is disposed on one side of the air outlet pipe. The bottom of the air inlet pipe passes through the mounting plate and extends into the mounting plate. Multiple heat dissipation holes are provided on the surface of the mounting plate. Fixing frames are fixedly disposed on both sides of the outer casing. L-shaped blocks are inserted into the inside of the fixing frames. Threaded holes are provided on the surfaces of the L-shaped blocks and the fixing frames. Bolts are threaded into the inside of the threaded holes.

[0012] By adopting the above technical solution, air circulation heat dissipation is achieved, effectively reducing the internal temperature. Furthermore, the fixing frames on both sides of the outer casing and the L-shaped blocks are fixed with bolts, which not only ensures the stable installation of the device but also enhances the overall sealing performance. Together, these measures help the device to operate stably in high-temperature environments and extend its service life.

[0013] As a further description of the above technical solution: a heat insulation layer is fixedly provided on the surface of both the outer shell and the mounting plate. The heat insulation layer may be made of a high-temperature alloy material. An outer layer is fixedly provided on the outside of the outer shell. The outer layer is made of a fluorocarbon polymer material.

[0014] By adopting the above technical solution, the external high temperature is effectively blocked from entering, the internal heating rate is slowed down, and the outer layer of the outer shell is made of fluorocarbon polymer material, which has high temperature resistance and corrosion resistance, and can resist the erosion of harsh environments. The two work together to ensure the stability and reliability of the device and extend its service life under complex working conditions.

[0015] The technical effects and advantages of this utility model are as follows:

[0016] By incorporating a cleaning mechanism, compared to existing technologies, this method utilizes a micro stepper motor, guide rail, slider, silicone scraper, and other components working in tandem to effectively and promptly scrape and clean dirt from the quartz glass surface. This prevents corrosion and reduced light transmittance of the quartz glass due to prolonged accumulation of contaminants. Furthermore, during the cleaning process, the connecting plate at one end of the silicone scraper slides into the guide groove on the outer casing, precisely limiting the scraper's movement direction and ensuring it moves smoothly and perpendicularly to the quartz glass surface. This effectively prevents scraper deviation, avoids cleaning dead zones or scratches on the quartz glass, and maximizes the cleaning effect.

[0017] By incorporating a heat-resistant mechanism, the sealing cover, compared to existing technologies, effectively prevents high-temperature external gases from freely intruding into the outer casing. During operation, with the aid of an external suction fan, relatively cool external air can smoothly enter through the inlet duct, flow past the mounting plate, and enter the internal space of the outer casing. This effectively absorbs the heat accumulated inside the device due to its proximity to the high-temperature environment of the microwave pyrolysis furnace, including the heat on the surface of the heat-conducting plates. Subsequently, the hot air is discharged through the heat dissipation holes from the outlet duct. This circulating airflow can promptly remove heat, ensuring that all internal components operate within a suitable temperature environment. This significantly extends the service life of the device and provides a solid foundation for the continuous, safe, and efficient operation of microwave pyrolysis furnaces in industrial production. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the cleaning mechanism structure of this utility model.

[0020] Figure 3 This is a schematic diagram of the overall rear cross-sectional structure of this utility model.

[0021] Figure 4 This is a schematic diagram of the overall disassembled structure of this utility model.

[0022] Figure 5 This is a schematic diagram of the heat-resistant mechanism of this utility model.

[0023] The attached figures are labeled as follows: 1. Outer shell; 2. Mounting plate; 3. Infrared and ultraviolet probe; 4. Optical window; 5. Quartz glass; 6. Guide rail; 7. Miniature stepper motor; 8. Heat-conducting sheet; 9. Threaded shaft; 10. Slider; 11. Guide plate; 12. Silicone scraper; 13. Connecting plate; 14. Guide groove; 15. Mounting groove; 16. Roller; 17. Sealing cover; 18. Air inlet duct; 19. Air outlet duct; 20. Heat dissipation hole; 21. Fixing frame; 22. L-shaped block; 23. Bolt; 24. Heat insulation layer; 25. Outer layer. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] The embodiments disclosed in this application are as follows: Figure 1-5 The microwave pyrolysis furnace flame monitoring device shown includes an outer shell 1, an installation plate 2 fixedly installed inside the outer shell 1, an infrared ultraviolet probe 3 threadedly connected inside the installation plate 2, and a cleaning mechanism provided on one side of the outer shell 1.

[0026] The cleaning mechanism includes two optical windows 4 on the surface of the outer casing 1, each containing a quartz glass 5. A guide rail 6 is fixedly mounted on one side of the outer casing 1, and a heat insulation box is fixedly mounted on one side of the guide rail 6. A micro stepper motor 7 is fixedly installed inside the heat insulation box, and a heat-conducting plate 8 is fixedly mounted on one side of the micro stepper motor 7. A threaded shaft 9 is fixedly mounted on the output end of the micro stepper motor 7. One end of the threaded shaft 9 passes through the guide rail 6 and is rotatably connected to the inner wall of the guide rail 6. A slider 10 is slidably connected inside the guide rail 6, and one end of the threaded shaft 9 passes through the slider 10 and is threadedly connected to the slider 10. A guide plate 11 is fixedly mounted on one side of the slider 10, and a silicone scraper 12 is fixedly mounted on one side of the guide plate 11. A connecting plate 13 is fixedly mounted on one end of the silicone scraper 12. The surface of the optical window 4 is provided with a guide groove 14, which is located on one side of the optical window 4. The connecting plate 13 is slidably connected to the guide groove 14. The surface of the connecting plate 13 is provided with a mounting groove 15, and a roller 16 is rotatably installed inside the mounting groove 15. The quartz glass 5 installed inside the optical window 4 serves two purposes: firstly, it isolates the high temperature, corrosive gases, and other impurities inside the furnace from the internal components of the device, thus protecting the internal red ultraviolet probe 3; secondly, the quartz glass has good light transmittance, allowing the red ultraviolet rays radiated by the flame to pass through smoothly, ensuring that the red ultraviolet probe 3 can accurately receive the corresponding light for monitoring. At the same time, it can also isolate the high temperature environment, dust, and corrosive gases inside the furnace from the inside of the outer casing 1, protecting the internal red ultraviolet probe 3 and other components from the harsh environment.

[0027] When the surface of the optical window 4 is contaminated with dust, oil, carbon deposits, and other pollutants generated in the furnace during the pyrolysis process, the micro stepper motor 7, installed inside the heat insulation box, provides insulation, reducing the impact of the high temperature inside the furnace on the micro stepper motor 7. The heat-conducting plate 8 at the bottom of the motor helps to conduct away the heat generated by the motor, ensuring stable operation of the motor in a relatively suitable temperature environment. After the micro stepper motor 7 starts, its output end drives the threaded shaft 9 to rotate. Since the threaded shaft 9 is rotatably connected to the inner wall of the guide rail 6 and passes through and is threadedly connected to the slider 10, and the slider 10 is restricted to sliding only inside the guide rail 6, when the threaded shaft 9 rotates, the slider 10 will reciprocate linearly along the guide rail 6. Consequently, the guide plate 11 fixed on one side of the slider 10 will move synchronously with the slider 10. The silicone scraper 12 is tightly attached to the surface of the quartz glass 5. When the slider 10 moves the silicone scraper 12, the silicone scraper 12 can scrape and clean the dirt on the surface of the quartz glass 5. The connecting plate 13 at one end of the silicone scraper 12 is slidably connected to the guide groove 14 on the surface of the outer shell 1. This guides and limits the movement of the silicone scraper 12, ensuring that the silicone scraper 12 moves smoothly in the direction perpendicular to the surface of the quartz glass 5, preventing it from deviating and affecting the cleaning effect. In addition, the roller 16 rotating in the mounting groove 15 on the surface of the connecting plate 13 can reduce the friction between the connecting plate 13 and the guide groove 14, making the scraper smoother when cleaning the quartz glass 5 in reciprocating motion, improving cleaning efficiency and effect, and ensuring that the quartz glass 5 always has good light transmittance, which is conducive to the accurate reception of flame light by the infrared ultraviolet probe 3.

[0028] Reference Figure 2-4As shown, the outer casing 1 has a heat-resistant mechanism inside. This mechanism includes a sealing ring fixedly mounted on one side of the outer casing 1. A sealing cover 17 is fitted inside the sealing ring. An air inlet pipe 18 and an air outlet pipe 19 are connected through the top of the sealing cover 17. The air inlet pipe 18 is located on one side of the air outlet pipe 19. The bottom of the air inlet pipe 18 passes through the mounting plate 2 and extends into the mounting plate 2. Multiple heat dissipation holes 20 are formed on the surface of the mounting plate 2. Fixing frames 21 are fixedly mounted on both sides of the outer casing 1. L-shaped blocks 22 are inserted into the fixing frames 21. Threaded holes are formed on the surfaces of both the L-shaped blocks 22 and the fixing frames 21. Bolts 23 are threaded into the threaded holes. The sealing cover 17 inserted into the sealing groove acts as a seal, preventing external high-temperature gas from freely entering the interior of the outer casing 1 and ensuring proper heat dissipation. When the thermal system is operating normally and stably, one end of the air outlet duct 19 is connected to an external suction fan, which then draws in relatively cool external air through the air inlet duct 18 at the top of the sealing cover 17. The air flows downward through the air inlet duct 18, passes through the mounting plate 2, and enters the internal space of the outer casing 1. During this process, the air absorbs the heat accumulated inside the outer casing 1 due to its proximity to the high-temperature environment of the microwave pyrolysis furnace, and then carries away the heat from the surface of the heat-conducting plate 8. After becoming hot air, it flows upward through multiple heat dissipation holes 20 on the mounting plate 2 until the hot air is discharged to the outside of the device through the air outlet duct 19. Through this continuous airflow, the heat inside the outer casing 1 is carried away, reducing the internal temperature of the outer casing 1 and ensuring that the internal components operate in a suitable temperature environment, thus avoiding performance degradation and damage due to high temperatures.

[0029] Reference Figure 5 As shown, both the outer casing 1 and the mounting plate 2 are fixedly provided with a heat insulation layer 24, which can be made of a high-temperature alloy. An outer layer 25, made of fluorocarbon polymer, is fixedly provided on the outside of the outer casing 1. An L-shaped block 22 is inserted into the fixing frame 21. Both surfaces have threaded holes. By screwing bolts 23 into the threaded holes, the bolts tighten, allowing the L-shaped block to... The block 22 is tightly fixed together with the fixed frame 21, further improving the sealing of the entire device. The heat insulation layer 24 on the surface of the outer shell 1 and the mounting plate 2 can be made of high-temperature alloy material. This material has good high-temperature resistance and can block the heat transferred from the external high-temperature environment. It works in conjunction with the heat-resistant mechanism to maintain a suitable temperature environment inside the device. Furthermore, the outer layer 25 of the outer shell 1 is made of fluorocarbon polymer material. Fluorocarbon polymer has excellent high-temperature resistance, corrosion resistance, and weather resistance. It can resist the erosion of the outer shell 1 by the harsh environmental factors such as high temperature, corrosive gases, and humidity around the microwave pyrolysis furnace, thus protecting the outer shell 1 and extending the service life of the device, ensuring its long-term stable and reliable operation in the special environment inside the microwave pyrolysis furnace.

[0030] Working principle of this utility model:

[0031] This utility model relates to a flame monitoring device inside a microwave pyrolysis furnace. When in use, the device is placed in a suitable position inside the microwave pyrolysis furnace. During combustion, the flame inside the furnace radiates red and ultraviolet light of a specific wavelength. The red and ultraviolet probe 3 can sense these characteristic wavelengths of light and convert the light signal into an electrical signal. The red and ultraviolet probe 3 is a Honeywell FS20X-211-21-2 flame detector. When a flame exists inside the furnace and is in a normal combustion state, the red and ultraviolet probe 3 receives the corresponding red and ultraviolet radiation, generating a corresponding change in electrical signal. This electrical signal can then be transmitted to an external control system. The control system determines the state of the flame based on a pre-set signal threshold and related algorithms, and then adjusts the operating parameters of the microwave pyrolysis furnace accordingly to ensure the normal progress of the pyrolysis reaction. This is prior art and will not be described in detail in this technical solution.

[0032] The quartz glass 5 installed inside the optical window 4 serves two purposes: firstly, it isolates the high temperature, corrosive gases, and other impurities inside the furnace from the internal components of the device, protecting the internal red and ultraviolet probe 3; secondly, the quartz glass has good light transmittance, allowing the red and ultraviolet rays radiated by the flame to pass through smoothly, ensuring that the red and ultraviolet probe 3 can accurately receive the corresponding light for monitoring, while also isolating the high temperature environment, dust, and corrosive gases inside the furnace from the inside of the outer casing 1, protecting the internal red and ultraviolet probe 3 and other components from the harsh environment.

[0033] When the surface of the optical window 4 is covered with various contaminants such as dust, oil, and carbon deposits generated in the furnace during the pyrolysis process, the micro stepper motor 7 is installed in the heat insulation box, which plays a certain role in heat insulation and reduces the impact of the high temperature in the furnace on the micro stepper motor 7. The heat conduction plate 8 at the bottom of the motor helps to conduct away the heat generated by the motor, ensuring that the motor operates stably in a relatively suitable temperature environment. Then, after the micro stepper motor 7 starts, its output end drives the threaded shaft 9 to rotate. Since the threaded shaft 9 is rotatably connected to the inner wall of the guide rail 6 and passes through the slider 10 and is threadedly connected to it, and the slider 10 is restricted to sliding only inside the guide rail 6, when the threaded shaft 9 rotates, the slider 10 will make a linear reciprocating motion along the guide rail 6. Then, the guide plate 11 fixed on one side of the slider 10 will move synchronously with the slider 10. The silicone scraper 12 fixed on the guide plate 11 is in close contact with the surface of the quartz glass 5. When the slider 10 drives the silicone scraper 12 to move, the silicone scraper 12 can scrape and clean the dirt on the surface of the quartz glass 5.

[0034] The connecting plate 13 at one end of the silicone scraper 12 is slidably connected to the guide groove 14 on the surface of the outer shell 1. This guides and limits the movement of the silicone scraper 12, ensuring that the silicone scraper 12 moves smoothly in a direction perpendicular to the surface of the quartz glass 5, preventing it from deviating and affecting the cleaning effect. In addition, the roller 16, which is rotatably installed in the mounting groove 15 on the surface of the connecting plate 13, can reduce the friction between the connecting plate 13 and the guide groove 14, making the scraper smoother when cleaning the quartz glass 5 in reciprocating motion, improving cleaning efficiency and effect, ensuring that the quartz glass 5 always has good light transmittance, which is conducive to the accurate reception of flame light by the infrared ultraviolet probe 3.

[0035] The sealing cover 17 inserted into the sealing groove serves a sealing function, preventing high-temperature external gas from freely entering the interior of the outer casing 1 and ensuring the normal and stable operation of the heat dissipation system. One end of the air outlet pipe 19 is connected to an external suction fan, thereby allowing relatively low-temperature external air to enter through the air inlet pipe 18 at the top of the sealing cover 17. The air flows downward along the air inlet pipe 18, passes through the mounting plate 2, and enters the interior space of the outer casing 1. During this process, the air absorbs the heat accumulated inside the outer casing 1 due to its proximity to the high-temperature environment of the microwave pyrolysis furnace, and then carries away the heat from the surface of the heat-conducting plate 8. After becoming hot air, it rises through multiple heat dissipation holes 20 on the mounting plate 2 until the hot air is discharged to the outside of the device through the air outlet pipe 19. Through this continuous air circulation, the heat inside the outer casing 1 is carried away, reducing the internal temperature of the outer casing 1 and ensuring that the internal components operate in a suitable temperature environment, avoiding performance degradation and damage due to high temperatures.

[0036] The L-shaped block 22 is inserted into the fixing frame 21. Both have threaded holes on their surfaces. By screwing the bolt 23 into the threaded holes, the L-shaped block 22 and the fixing frame 21 are tightly fixed together, further improving the sealing of the entire device. The heat insulation layer 24 on the surface of the outer shell 1 and the mounting plate 2 can be made of high-temperature alloy material. This material has good high-temperature resistance and can block the heat transferred from the external high-temperature environment. It works in conjunction with the heat-resistant mechanism to maintain a suitable temperature environment inside the device. Furthermore, the outer layer 25 of the outer shell 1 is made of fluorocarbon polymer material. Fluorocarbon polymer has excellent high-temperature resistance, corrosion resistance, and weather resistance. It can resist the erosion of the outer shell 1 by the harsh environmental factors such as high temperature, corrosive gases, and humidity around the microwave pyrolysis furnace, thus protecting the outer shell 1 and extending the service life of the device, ensuring its long-term stable and reliable operation in the special environment of the microwave pyrolysis furnace.

[0037] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A flame monitoring device for a microwave pyrolysis furnace, comprising an outer casing (1), characterized in that: An installation plate (2) is fixedly installed inside the outer shell (1), and an ultraviolet probe (3) is threadedly connected inside the installation plate (2). A cleaning mechanism is provided on one side of the outer shell (1). The cleaning mechanism includes two optical windows (4) on the surface of the outer shell (1). Quartz glass (5) is fixedly installed inside each of the two optical windows (4). A guide rail (6) is fixedly installed on one side of the outer shell (1). A heat insulation box is fixedly installed on one side of the guide rail (6). A micro stepper motor (7) is fixedly installed inside the heat insulation box. A heat-conducting sheet (8) is fixedly installed on one side of the micro stepper motor (7). A threaded shaft (9) is fixedly installed at the output end of the micro stepper motor (7). One end of the threaded shaft (9) passes through the guide rail (6) and is rotatably connected to the inner wall of the guide rail (6). A slider (10) is slidably connected inside the guide rail (6). One end of the threaded shaft (9) passes through the slider (10) and is threadedly connected to the slider (10). A guide plate (11) is fixedly installed on one side of the slider (10). A silicone scraper (12) is fixedly installed on one side of the guide plate (11). A connecting plate (13) is fixedly installed at one end of the silicone scraper (12).

2. The flame monitoring device inside the microwave pyrolysis furnace according to claim 1, characterized in that: The outer shell (1) has a guide groove (14) on its surface. The guide groove (14) is located on one side of the optical window (4). The connecting plate (13) is slidably connected to the guide groove (14). The connecting plate (13) has an installation groove (15) on its surface. A roller (16) is rotatably installed inside the installation groove (15).

3. The flame monitoring device inside the microwave pyrolysis furnace according to claim 1, characterized in that: The outer shell (1) is provided with a heat-resistant mechanism. The heat-resistant mechanism includes a sealing ring fixedly disposed on one side of the outer shell (1). A sealing cover (17) is fitted inside the sealing ring. An air inlet pipe (18) and an air outlet pipe (19) are provided through the top of the sealing cover (17). The air inlet pipe (18) is disposed on one side of the air outlet pipe (19). The bottom of the air inlet pipe (18) passes through the mounting plate (2) and extends into the mounting plate (2). A plurality of heat dissipation holes (20) are provided on the surface of the mounting plate (2).

4. The flame monitoring device inside the microwave pyrolysis furnace according to claim 1, characterized in that: The outer shell (1) is fixedly provided with a fixing frame (21) on both sides. An L-shaped block (22) is inserted into the inside of the fixing frame (21). Threaded holes are opened on the surfaces of the L-shaped block (22) and the fixing frame (21). Bolts (23) are threaded into the inside of the threaded holes.

5. The flame monitoring device inside the microwave pyrolysis furnace according to claim 1, characterized in that: The outer shell (1) and the mounting plate (2) are both fixedly provided with a heat insulation layer (24), which can be made of high temperature alloy material.

6. The flame monitoring device inside the microwave pyrolysis furnace according to claim 1, characterized in that: The outer shell (1) is fixedly provided with an outer layer (25), which is made of fluorocarbon polymer material.

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