A boiler furnace decoking temperature measurement system and working method

Abstract

The application discloses a boiler furnace coking temperature measuring system and a working method, and belongs to the technical field of thermal power generation. The system comprises a probe body, pneumatic modules, a transmission assembly and a coking assembly. One end of the probe body is inserted into the inside of a furnace wall and is provided with a temperature measuring unit. A temperature measuring hole is arranged between water cooling wall fins in the furnace. The temperature measuring unit is arranged towards the temperature measuring hole. A plurality of pneumatic modules are arranged on the probe body. The plurality of pneumatic modules are in communication with the probe body. One end of the probe body provided with the temperature measuring unit is provided with an air outlet. The air outlet corresponds to the temperature measuring hole. The plurality of pneumatic modules are connected with the transmission assembly. The plurality of transmission assemblies are installed on the furnace wall. One end of the plurality of transmission assemblies is inserted into the furnace and is provided with the coking assembly. A plurality of coking holes are arranged between the fins of the water cooling wall around the temperature measuring hole. The plurality of coking assemblies are installed in the plurality of coking holes. The application solves the problem that the existing temperature measuring hole is easily blocked by ash and coking blocks and needs to be cleaned by stopping the furnace, realizes long-term smoothness of the temperature measuring hole and continuous temperature measurement without stopping the furnace.

Description

Technical Field

[0001] This invention relates to the field of thermal power generation technology, specifically to a boiler furnace descaling and temperature measurement system and its working method. Background Technology

[0002] In large-scale pulverized coal boilers in thermal power plants, the combustion temperature of the furnace wall can reach over 1300℃. The flame temperature distribution directly reflects the combustion state and is a key parameter for optimizing air distribution, preventing coking, and improving combustion efficiency. To achieve direct flame temperature measurement without damaging the overall heat exchange structure of the water-cooled wall, the art commonly employs the method of opening temperature measuring holes between the fins of the water-cooled wall, aligning a non-contact temperature sensor with the measuring hole, and obtaining the radiant temperature of the internal flame from the outside of the furnace wall.

[0003] However, this existing technology has obvious drawbacks: First, the ash and molten coke produced by pulverized coal combustion will quickly deposit at the edge of the temperature measuring hole. As the operating time increases, the coke blocks gradually grow and block the entire temperature measuring hole, resulting in the loss of temperature measurement signal. Once the temperature measuring hole is blocked, it must be manually cleaned after the furnace is shut down, which is costly and affects the power generation efficiency. Summary of the Invention To address the problems existing in the prior art, this invention provides a boiler furnace descaling and temperature measurement system and its working method, which solves the problem that the existing temperature measuring holes are easily blocked by ash and coke, requiring boiler shutdown for cleaning, and achieves long-term unobstructed temperature measuring holes and continuous temperature measurement without boiler shutdown.

[0004] The technical solution of the present invention is as follows: In a first aspect of the present invention, a boiler furnace descaling temperature measurement system is provided, comprising a probe body, a pneumatic module, a transmission assembly, and a descaling assembly; One end of the probe body is inserted into the furnace wall and is equipped with a temperature measuring unit. Temperature measuring holes are provided between the fins of the water-cooled wall inside the furnace. The temperature measuring unit is positioned facing the temperature measuring holes. The probe body is equipped with multiple pneumatic modules, which are connected to the probe body. The probe body has an air outlet at one end with a temperature measuring unit, and the air outlet corresponds to the temperature measuring hole. The multiple pneumatic modules are respectively connected to the transmission components, the multiple transmission components are respectively installed on the furnace wall, one end of the multiple transmission components extends into the furnace and is respectively installed with a descaling component, the fins of the water-cooled wall around the temperature measuring hole are provided with multiple descaling holes, and the multiple descaling components are respectively installed in the multiple descaling holes.

[0005] In some embodiments of the present invention, two pneumatic modules are provided, which are symmetrically arranged on both sides of the probe body; The two pneumatic modules are respectively connected to the transmission components, and the two transmission components are rotatably mounted on the furnace wall. One end of each of the two transmission components extends into the furnace chamber and is respectively equipped with a descaling component. Descaling holes are respectively provided between the fins of the water-cooled walls on both sides of the temperature measuring hole, and the two descaling components are rotatably mounted in the two descaling holes.

[0006] In some embodiments of the present invention, the probe body includes a hollow measuring cylinder, one end of which is equipped with a control module, and the other end of which is inserted into the furnace wall. A temperature measuring unit is provided inside the measuring cylinder inserted into the furnace wall. An air outlet is provided at the end of the measuring cylinder with the temperature measuring unit, and the diameter of the end of the air outlet facing the temperature measuring hole is smaller than the diameter of the measuring cylinder.

[0007] In some embodiments of the present invention, a clamping assembly is provided at the measuring cylinder inserted into the furnace wall, and a temperature measuring unit is provided in the middle of the clamping assembly.

[0008] In some embodiments of the present invention, a flange assembly is provided at the mounting position of the measuring cylinder and the furnace wall, the measuring cylinder is disposed in the middle of the flange assembly, and the transmission assembly is disposed on the flange assembly on the periphery of the measuring cylinder. Both the measuring cylinder and the transmission assembly are mounted on the furnace wall through the flange assembly.

[0009] In some embodiments of the present invention, the pneumatic module includes an air intake pipe and a pneumatic unit; The air inlet end of the air inlet pipe is connected to an external air supply device, the air outlet end of the air inlet pipe is connected to a pneumatic unit, the air outlet end of the pneumatic unit is connected to a measuring cylinder, and the output end of the pneumatic unit is connected to a transmission assembly.

[0010] In some embodiments of the present invention, the pneumatic unit is configured to rotate when air is introduced into the air intake pipe and drive the transmission assembly to rotate.

[0011] In some embodiments of the present invention, the decoking assembly includes a sleeve and an elastic decoking plate, wherein the sleeve is disposed in the decoking hole; The elastic desiccant plate is configured with a Y-shaped structure. The elastic desiccant plate includes a rod and an opening part. The rod is connected to the transmission assembly and is disposed in the sleeve. The opening part of the elastic desiccant plate is disposed close to the inner wall of the furnace. The opening part of the elastic desiccant plate is configured to open and fit against the inner wall of the furnace after rotation.

[0012] In some embodiments of the present invention, a heat insulation layer is also included, which is disposed around the probe body inserted into the furnace wall where the temperature measuring unit is located.

[0013] In a second aspect of the invention, a method for operating a boiler furnace descaling and temperature measurement system is provided, comprising: Temperature measuring holes are made between the fins of the water-cooled wall, and multiple descaling holes are made around the temperature measuring holes. Insert the probe body into the furnace wall and make the temperature measuring unit face the temperature measuring hole, and install multiple decoking components in multiple decoking holes respectively; Compressed air is introduced into the pneumatic module, which drives the pneumatic module to rotate. The pneumatic module drives the transmission component to rotate, which in turn drives the descaling component to rotate in the descaling hole. As the descaling component rotates, it scrapes away the dirt and coke from the edge of the temperature measuring hole. Compressed air flows from the pneumatic module into the probe body, and then blows from the air outlet at the end of the probe body towards the temperature measuring hole, blowing the floating ash at the temperature measuring hole into the furnace. The temperature of the flame inside the furnace is collected non-contactly through the temperature measuring hole by the temperature measuring unit.

[0014] One or more technical solutions of the present invention have the following beneficial effects: Multiple descaling holes are opened between the water-cooled wall fins around the temperature measuring hole, and descaling components are installed in the descaling holes. At the same time, a pneumatic module drives the transmission component to continuously rotate the descaling component in the furnace. The descaling component adopts a Y-shaped elastic descaling plate structure. Its opening part closely fits the inner wall of the furnace during rotation, actively scraping away the ash deposited on the edge of the temperature measuring hole and the gradually growing coke. On this basis, compressed air first drives the pneumatic module to rotate, then flows into the measuring cylinder of the probe body, and finally blows it from the air outlet towards the temperature measuring hole, blowing the floating ash into the furnace, thus realizing the synergistic effect of pneumatic descaling and purging cleaning.

[0015] Driven by the same compressed air source in a cascade manner, the entire system requires no additional power. It has a compact, stable, and safe structure, and can keep the temperature measuring holes unobstructed for a long time without shutting down the boiler, completely avoiding the loss of temperature measurement signals and the need for manual cleaning during boiler shutdown due to hole blockage. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a boiler furnace descaling and temperature measurement system provided in Embodiment 1 of the present invention; Figure 2 This is a schematic diagram of the opening portion of the elastic desiccant plate provided in Embodiment 1 of the present invention, showing its rotational desiccant removal mechanism.

[0017] In the diagram: 1. Control module; 2. Measuring cylinder; 3. Connector; 4. Pneumatic unit; 5. Transmission assembly; 6. Flange assembly; 7. Temperature measuring unit; 8. Clamping assembly; 9. Air outlet; 10. Insulation layer; 11. Water-cooled wall; 12. Temperature measuring hole; 13. Decoction hole; 14. Decoction assembly; 1401. Opening section; 15. Sleeve; 16. Quick connector. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Example 1 In a typical embodiment of the present invention, such as Figure 1 and Figure 2 As shown, a boiler furnace descaling temperature measurement system is proposed, including a probe body, a pneumatic module, a transmission component 5, and a descaling component 14; One end of the probe body is inserted into the furnace wall and is equipped with a temperature measuring unit 7. A temperature measuring hole 12 is provided between the fins of the water-cooled wall 11 in the furnace chamber, and the temperature measuring unit 7 is positioned facing the temperature measuring hole 12. The probe body is equipped with multiple pneumatic modules, which are connected to the probe body. The probe body has an air outlet 9 at one end with a temperature measuring unit 7, and the air outlet 9 corresponds to the temperature measuring hole 12. Multiple pneumatic modules are connected to transmission components 5 respectively. Multiple transmission components 5 are installed on the furnace wall. One end of each transmission component 5 extends into the furnace chamber and is equipped with a descaling component 14. Multiple descaling holes 13 are provided between the fins of the water-cooled wall 11 around the temperature measuring hole 12. Multiple descaling components 14 are installed in the multiple descaling holes 13 respectively.

[0020] Existing technologies rely solely on compressed air to purge the temperature measuring hole 12, but this fails to remove the coke deposits adhering to the hole. These coke deposits gradually grow and easily clog the hole, necessitating boiler shutdown for cleaning, severely impacting temperature measurement accuracy and boiler efficiency. The system provided in this embodiment solves the problem of coke clogging the temperature measuring hole 12 structurally by incorporating a coke removal component 14 that works in conjunction with the purging structure. This ensures the temperature measuring hole 12 remains unobstructed for extended periods, eliminating the need for boiler shutdowns and significantly improving boiler operational continuity.

[0021] One end of the probe body is inserted into the furnace wall and is equipped with a temperature measuring unit 7. The temperature measuring unit 7 is positioned facing the temperature measuring hole 12 between the fins of the water-cooled wall 11, realizing non-contact direct measurement of flame temperature. This avoids the defect of traditional thermocouples that can only measure the indirect temperature of the water-cooled wall 11. The probe body is equipped with multiple pneumatic modules, which are connected to the probe body. The end of the probe body with the temperature measuring unit 7 is equipped with an air outlet 9, which corresponds to the temperature measuring hole 12. This allows compressed air to be blown from the end of the probe body to the temperature measuring hole 12, removing the floating dust on the surface of the temperature measuring hole 12 and preventing dust accumulation from affecting the temperature measurement accuracy.

[0022] Multiple pneumatic modules are connected to the transmission assembly 5, which is mounted on the furnace wall. One end of the transmission assembly 5 extends into the furnace chamber and is equipped with a decoking assembly 14. Multiple decoking holes 13 are provided between the fins of the water-cooled wall 11 surrounding the temperature measuring hole 12, and the decoking assembly 14 is installed in the decoking holes 13. This integrated structure enables the system to perform non-contact temperature measurement while simultaneously driving the transmission assembly 5 via the pneumatic modules to move the decoking assembly 14 within the decoking holes 13, actively scraping away the hard coke deposits accumulated at the edge of the temperature measuring hole 12.

[0023] There are two pneumatic modules, which are symmetrically arranged on both sides of the probe body; Two pneumatic modules are connected to transmission components 5 respectively. The two transmission components 5 are rotatably mounted on the furnace wall. One end of the two transmission components 5 extends into the furnace and is respectively installed with a descaling component 14. Descaling holes 13 are respectively provided between the fins of the water-cooled walls 11 on both sides of the temperature measuring hole 12. The two descaling components 14 are rotatably mounted in the two descaling holes 13 respectively.

[0024] In this embodiment, the two pneumatic modules are connected to the measuring cylinder 2 through a cross connector 3. The cross connector 3 is configured as a four-way structure to ensure a stable connection between the measuring cylinder 2 and the two pneumatic modules while ensuring stable gas flow.

[0025] The use of two symmetrically arranged pneumatic modules and two descaling components 14 allows the descaling action to be performed simultaneously on both sides of the temperature measuring hole 12, forming a symmetrical scraping force. Compared with single-sided descaling, double-sided symmetrical descaling can more comprehensively cover the area around the temperature measuring hole 12, ensuring that the coke on the entire circumference of the temperature measuring hole 12 can be removed in time, further reducing the risk of coke blockage, and also avoiding the existence of descaling blind spots caused by single-sided descaling.

[0026] Furthermore, the two decoking components 14 drive decoking separately. Even if one of the pneumatic modules experiences a brief gas supply fluctuation, the other can still maintain the decoking action, which improves the reliability of the system. The symmetrical arrangement of the structure also makes the installation of the whole device on the furnace wall more balanced and stable, reduces vibration, and is conducive to long-term operation.

[0027] The probe body includes a hollow measuring cylinder 2. A control module 1 is installed at one end of the measuring cylinder 2, and the other end of the measuring cylinder 2 is inserted into the furnace wall. A temperature measuring unit 7 is provided inside the measuring cylinder 2 inserted into the furnace wall. An air outlet 9 is provided at the end of the measuring cylinder 2 where the temperature measuring unit 7 is located. The diameter of the end of the air outlet 9 facing the temperature measuring hole 12 is smaller than the diameter of the measuring cylinder 2.

[0028] A control module 1 is installed at one end of the measuring cylinder 2, and the other end of the measuring cylinder 2 is inserted into the furnace wall. The inserted part of the measuring cylinder 2 is equipped with a temperature measuring unit 7. The control module 1 is mainly used for signal processing and communication control, and is used to receive and respond to the temperature information measured by the temperature measuring module. In addition, the control module 1 is far away from the high-temperature area of ​​the furnace, which improves the service life of electronic components and signal stability, and is equipped with a quick-connect plug 16 for quick connection with external equipment.

[0029] The measuring cylinder 2 has an air outlet 9 at one end where the temperature measuring unit 7 is located. The diameter of the end of the air outlet 9 facing the temperature measuring hole 12 is smaller than the diameter of the measuring cylinder 2. This variable diameter structure increases the flow velocity and decreases the pressure of compressed air as it flows from the coarser part of the measuring cylinder 2 to the narrower air outlet 9, creating a jet effect. This enhances the impact of the purging airflow on the surface dust of the temperature measuring hole 12 and reduces ineffective diffusion of compressed air, allowing the airflow to act more concentratedly on the temperature measuring hole 12, thus improving purging efficiency. As a result, a good dust removal effect can be achieved with less compressed air, reducing operating energy consumption.

[0030] The hollow measuring cylinder 2 serves as both the installation channel for the temperature measuring unit 7 and the compressed air purging channel, featuring a compact structure that saves installation space.

[0031] A clamping assembly 8 is provided at the measuring cylinder 2 inserted into the furnace wall, and a temperature measuring unit 7 is provided in the middle of the clamping assembly 8. The function of the clamping assembly 8 is to fix the position of the temperature measuring unit 7 inside the measuring cylinder 2, ensuring that the sensing center line of the temperature measuring unit 7 is aligned with the center of the temperature measuring hole 12, and avoiding measurement errors caused by the temperature measuring unit 7 shifting due to vibration or thermal expansion.

[0032] In this embodiment, the clamping assembly 8 is configured as multiple elastic protrusions arranged circumferentially along the inner side of the measuring cylinder 2, and spaced at intervals along the length of the temperature measuring unit 7. The temperature measuring unit 7 is located in the middle, so that the temperature measuring unit 7 is firmly wrapped and supported. At the same time, the clamping assembly 8 itself can play a certain role in heat insulation and vibration reduction. In actual use, when the boiler furnace temperature fluctuates drastically or the system starts and stops, the clamping assembly 8 can effectively resist thermal shock and mechanical vibration, maintain the pointing accuracy of the temperature measuring unit 7, and thus ensure the accuracy and repeatability of long-term temperature measurement data. In addition, it can be understood that the multiple elastic protrusions are arranged linearly along the length of the temperature measuring unit 7, which will not affect the gas flow and ensure that the air outlet 9 is unobstructed.

[0033] In addition, the clamping assembly 8 facilitates the disassembly and replacement of the temperature measuring unit 7. During maintenance, the temperature measuring unit 7 can be removed simply by loosening the clamping assembly 8, without having to disassemble the entire probe body, thus improving maintainability.

[0034] A flange assembly 6 is provided at the installation position of the measuring cylinder 2 and the furnace wall. The measuring cylinder 2 is located in the middle of the flange assembly 6, and the transmission assembly 5 is located on the flange assembly 6 around the measuring cylinder 2. Both the measuring cylinder 2 and the transmission assembly 5 are installed on the furnace wall through the flange assembly 6.

[0035] The flange assembly 6 serves as an integrated mounting base, simultaneously securing the probe body and multiple transmission components 5, enabling modular installation. During on-site construction, only the corresponding mounting holes need to be pre-set on the furnace wall, and then the entire flange assembly 6, along with the integrated measuring cylinder 2 and transmission components 5, can be installed together, greatly simplifying the on-site installation process. Furthermore, the flange assembly 6 provides a reliable sealing surface, effectively preventing the leakage of high-temperature flue gas from the furnace and ensuring the safe operation of the boiler.

[0036] In addition, the measuring cylinder 2 and the transmission assembly 5 share the same flange base, which ensures the relative positional accuracy between the two, so that the decoking assembly 14 driven by the transmission assembly 5 can be accurately aligned with the decoking hole 13 on the periphery of the temperature measuring hole 12, avoiding the problem of the decoking assembly 14 getting stuck or not decoking properly due to installation deviation.

[0037] The pneumatic module includes an intake pipe and a pneumatic unit 4; The air inlet end of the air inlet pipe is connected to the external air supply equipment, the air outlet end of the air inlet pipe is connected to the pneumatic unit 4, the air outlet end of the pneumatic unit 4 is connected to the measuring cylinder 2, and the output end of the pneumatic unit 4 is connected to the transmission component 5.

[0038] This configuration enables the cascaded utilization of compressed air: the compressed air first enters the pneumatic unit 4, which contains blades. The compressed air drives the impeller inside the pneumatic unit 4 to rotate, converting the pressure energy of the gas into mechanical rotational energy to drive the transmission assembly 5 and the descaling assembly 14. The air flowing out of the pneumatic unit 4 still has a certain pressure and velocity, and then enters the measuring cylinder 2 through the outlet, finally being blown from the outlet 9 to the temperature measuring hole 12 for dust removal. In this way, the same stream of compressed air completes both the descaling and dust removal tasks sequentially, resulting in high energy utilization efficiency and eliminating the need for an additional independent power source.

[0039] The pneumatic unit 4 is configured to rotate when air is introduced into the air intake pipe, thereby driving the transmission component 5 to rotate. With this configuration, as long as compressed air is introduced, the pneumatic unit 4 will automatically start rotating, thereby driving the transmission component 5 and the decoking component 14 to rotate continuously to remove coke. This allows the decoking action to be synchronized with the purging action, without the need for electrical control or manual intervention. This achieves fully automatic continuous decoking, ensuring that coke is scraped off as soon as it settles to the edge of the temperature measuring hole, avoiding the difficulty of removing the coke after it grows and hardens, and effectively ensuring the long-term unobstructed flow of the temperature measuring hole 12.

[0040] Compared to methods that require motor drive and control systems, pneumatic drive has inherent safety characteristics. In environments such as boiler furnaces with high temperatures, dust, and high explosion-proof requirements, pneumatic drive does not generate electric sparks, making it safer. At the same time, pneumatic drive has a simple structure, low failure rate, and is easy to maintain.

[0041] The decoking assembly 14 includes a sleeve 15 and an elastic decoking plate, with the sleeve 15 disposed in the decoking hole 13; The elastic descaling plate is configured with a Y-shaped structure. The elastic descaling plate includes a rod and an opening part 1401. The rod is connected to the transmission assembly 5 and is set inside the sleeve 15. The opening part 1401 of the elastic descaling plate is set close to the inner wall of the furnace.

[0042] With the above-mentioned structural design, when the elastic descaling plate is inserted into the descaling hole 13, it can retract to pass through the sleeve 15. Once inside the furnace, the elastic descaling plate automatically opens into a Y shape due to its own elasticity, with the two branches located on both sides of the temperature measuring hole 12. When the transmission component 5 drives the descaling plate to rotate, the two branches of the Y shape continuously sweep across the edge of the temperature measuring hole 12 during rotation, scraping off the accumulated ash and coke. Furthermore, the opening part 1401 can fit against the inner wall of the furnace during rotation, ensuring that the descaling plate remains in contact with the inner surface of the furnace wall during rotation. This effectively scrapes off hard coke blocks that are tightly attached to the wall, resulting in a larger descaling coverage area and higher and more thorough descaling efficiency.

[0043] The system also includes an insulation layer 10, which is positioned around the probe body inserted into the furnace wall where the temperature measuring unit 7 is located. Understandably, the temperature inside the boiler furnace is high, and prolonged system operation may still cause the temperature measuring unit 7 to overheat and fail, or its measurement accuracy to drift. The insulation layer 10, positioned around the probe body inserted into the furnace wall, serves to isolate the high temperature of the furnace from the heat conducted into the probe body. The insulation layer 10 can be made of high-temperature resistant insulating materials, such as ceramic fiber or aerogel, effectively reducing the ambient temperature around the temperature measuring unit 7, ensuring stable operation of the temperature measuring unit 7 within its allowable operating temperature range, thereby extending the service life of the temperature measuring unit 7 and improving the long-term reliability of the system.

[0044] Meanwhile, the insulation layer 10 also reduces the heat exchange between the probe body and the furnace wall, preventing local heat loss from affecting the heat exchange uniformity of the water-cooled wall 11.

[0045] In a second aspect of the invention, a method for operating a boiler furnace descaling and temperature measurement system is provided, comprising: Temperature measuring holes 12 are opened between the fins of the water-cooled wall 11, and multiple descaling holes 13 are opened around the temperature measuring holes 12. Insert the probe body into the furnace wall and make the temperature measuring unit 7 face the temperature measuring hole 12, and install multiple decoking components 14 into multiple decoking holes 13 respectively. Compressed air is introduced into the pneumatic module, which drives the pneumatic module to rotate. The pneumatic module drives the transmission component 5 to rotate, and the transmission component 5 drives the descaling component 14 to rotate in the descaling hole 13. When the descaling component 14 rotates, it scrapes off the dirt and coke on the edge of the temperature measuring hole 12. Compressed air flows from the pneumatic module into the probe body, and then blows from the air outlet 9 at the end of the probe body to the temperature measuring hole 12, blowing the floating ash at the temperature measuring hole 12 into the furnace. The temperature of the flame inside the furnace is collected non-contactly through the temperature measuring hole 12 by the temperature measuring unit 7.

[0046] By opening temperature measuring holes 12 between the fins of the water-cooled wall 11 and opening multiple descaling holes 13 around the temperature measuring holes 12, this opening layout is a minimal modification to the original structure of the boiler and does not damage the overall strength and heat exchange performance of the water-cooled wall 11. Insert the probe body into the furnace wall and position the temperature measuring unit 7 toward the temperature measuring hole 12. Install multiple decoking components 14 into multiple decoking holes 13 respectively, thus achieving rapid installation and positioning of the device. Compressed air is supplied to the pneumatic module, which drives the module to rotate. The pneumatic module, in turn, drives the transmission assembly 5 to rotate, which in turn drives the decoking assembly 14 to rotate within the decoking hole 13. As the decoking assembly 14 rotates, it scrapes away the ash and coke deposits from the edge of the temperature measuring hole 12. This pneumatic drive enables automatic and continuous decoking, solving the problem in existing technologies where coke blocks clog the temperature measuring hole and cannot be removed online.

[0047] Compressed air flows from the pneumatic module into the probe body, and then blows from the air outlet 9 at the end of the probe body to the temperature measuring hole 12, blowing the floating ash at the temperature measuring hole 12 into the furnace. The purging action and the decoking action are completed sequentially by the same compressed air and work together.

[0048] The flame temperature inside the furnace is collected non-contactly through the temperature measuring hole 12 by the temperature measuring unit 7. The entire process is clear, requires no furnace shutdown, and achieves online real-time decoking and continuous temperature measurement. This ensures a data foundation for boiler combustion optimization, avoids manual cleaning shutdowns due to blocked measuring holes, and significantly improves power generation efficiency and equipment availability.

[0049] While the specific embodiments of the present invention have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solutions of the present invention are still within the scope of protection of the present invention.

Claims

1. A boiler furnace descaling and temperature measurement system, characterized in that, Includes the probe body, pneumatic module, transmission assembly, and decoking assembly; One end of the probe body is inserted into the furnace wall and is equipped with a temperature measuring unit. Temperature measuring holes are provided between the fins of the water-cooled wall inside the furnace. The temperature measuring unit is positioned facing the temperature measuring holes. The probe body is equipped with multiple pneumatic modules, which are connected to the probe body. The probe body has an air outlet at one end with a temperature measuring unit, and the air outlet corresponds to the temperature measuring hole. The multiple pneumatic modules are respectively connected to the transmission components, the multiple transmission components are respectively installed on the furnace wall, one end of the multiple transmission components extends into the furnace and is respectively installed with a descaling component, the fins of the water-cooled wall around the temperature measuring hole are provided with multiple descaling holes, and the multiple descaling components are respectively installed in the multiple descaling holes.

2. The boiler furnace descaling and temperature measurement system as described in claim 1, characterized in that, Two pneumatic modules are provided, which are symmetrically arranged on both sides of the probe body; The two pneumatic modules are respectively connected to the transmission components, and the two transmission components are rotatably mounted on the furnace wall. One end of each of the two transmission components extends into the furnace chamber and is respectively equipped with a descaling component. Descaling holes are respectively provided between the fins of the water-cooled walls on both sides of the temperature measuring hole, and the two descaling components are rotatably mounted in the two descaling holes.

3. The boiler furnace descaling and temperature measurement system as described in claim 1, characterized in that, The probe body includes a hollow measuring cylinder. A control module is installed at one end of the measuring cylinder, and the other end of the measuring cylinder is inserted into the furnace wall. A temperature measuring unit is provided inside the measuring cylinder inserted into the furnace wall. An air outlet is provided at the end of the measuring cylinder with the temperature measuring unit. The diameter of the end of the air outlet facing the temperature measuring hole is smaller than the diameter of the measuring cylinder.

4. The boiler furnace descaling and temperature measurement system as described in claim 3, characterized in that, A clamping assembly is provided at the measuring cylinder inserted into the furnace wall, and a temperature measuring unit is provided in the middle of the clamping assembly.

5. The boiler furnace descaling and temperature measurement system as described in claim 3, characterized in that, A flange assembly is provided at the installation position of the measuring cylinder and the furnace wall. The measuring cylinder is located in the middle of the flange assembly, and the transmission assembly is located on the flange assembly around the measuring cylinder. Both the measuring cylinder and the transmission assembly are installed on the furnace wall through the flange assembly.

6. The boiler furnace descaling and temperature measurement system as described in claim 3, characterized in that, The pneumatic module includes an air intake pipe and a pneumatic unit; The air inlet end of the air inlet pipe is connected to an external air supply device, the air outlet end of the air inlet pipe is connected to a pneumatic unit, the air outlet end of the pneumatic unit is connected to a measuring cylinder, and the output end of the pneumatic unit is connected to a transmission assembly.

7. The boiler furnace descaling and temperature measurement system as described in claim 6, characterized in that, The pneumatic unit is configured to rotate when air is introduced into the air intake pipe, and drive the transmission assembly to rotate.

8. The boiler furnace descaling and temperature measurement system as described in claim 1, characterized in that, The decoking assembly includes a sleeve and an elastic decoking plate, wherein the sleeve is disposed in the decoking hole; The elastic desiccant plate is configured with a Y-shaped structure. The elastic desiccant plate includes a rod and an opening part. The rod is connected to the transmission assembly and is disposed in the sleeve. The opening part of the elastic desiccant plate is disposed close to the inner wall of the furnace. The opening part of the elastic desiccant plate is configured to open and fit against the inner wall of the furnace after rotation.

9. The boiler furnace descaling and temperature measurement system as described in claim 1, characterized in that, It also includes a heat insulation layer, which is disposed around the temperature measuring unit inside the furnace wall where the probe body is inserted.

10. The operating method of a boiler furnace descaling and temperature measurement system as described in any one of claims 1-9, characterized in that, include: Temperature measuring holes are made between the fins of the water-cooled wall, and multiple descaling holes are made around the temperature measuring holes. Insert the probe body into the furnace wall and make the temperature measuring unit face the temperature measuring hole, and install multiple decoking components in multiple decoking holes respectively; Compressed air is introduced into the pneumatic module, which drives the pneumatic module to rotate. The pneumatic module drives the transmission component to rotate, which in turn drives the descaling component to rotate in the descaling hole. As the descaling component rotates, it scrapes away the dirt and coke from the edge of the temperature measuring hole. Compressed air flows from the pneumatic module into the probe body, and then blows from the air outlet at the end of the probe body towards the temperature measuring hole, blowing the floating ash at the temperature measuring hole into the furnace. The temperature of the flame inside the furnace is collected non-contactly through the temperature measuring hole by the temperature measuring unit.

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