Distributed flue measuring device

Abstract

The invention relates to the technical field of flue gas sampling detection equipment, and discloses a distributed flue measuring device which comprises a first mounting plate, a second mounting plate and a pipeline, the pipeline is mounted between the first mounting plate and the second mounting plate, the distributed flue measuring device further comprises a test rod penetrating through the pipeline, and one end of the test rod is connected with an ultrasonic detector; a driving assembly is arranged at one end of the test rod, and the driving assembly can control horizontal movement and vertical lifting of the test rod; a cleaning assembly is arranged outside the pipeline and comprises a cleaning roller, and the cleaning roller can be attached to the surfaces of the test rod and the lead screw to rotate. The driving assembly is arranged to drive the test rod so as to drive the ultrasonic detector to carry out multi-point measurement work at different horizontal positions and different vertical heights in the pipeline, the surfaces of the ultrasonic detector and the test rod are cleaned, and meanwhile, dust, soot and other impurities attached to the edge of the guide groove can be effectively blown away.

Description

Technical Field

[0001] This invention relates to the field of flue gas sampling and detection equipment technology, specifically a distributed flue gas measurement device. Background Technology

[0002] To facilitate flue gas sampling and testing, most existing flues have multiple sampling ports. There are two main methods for sampling and testing: one is to use a handheld flue gas detector to sample and test the flue gas at each sampling port, which is cumbersome and labor-intensive; the other is to connect each sampling point with a gas pipe, which then converges into a manifold, and the flue gas at the manifold is then tested by a flue gas detection device. Although this method can reduce the workload, the large number of interconnected pipes and the long distance of flue gas transportation cause the sampled flue gas to be diffused and diluted, resulting in inaccurate test results.

[0003] CN112834704A discloses a distributed flue gas sampling and measurement device, comprising multiple sampling structures evenly spaced on a flue, each connected to a manifold via an exhaust pipe, with a first solenoid valve on the exhaust pipe; a flue gas detection structure is located inside the manifold, forming a detection sealed cavity, on which a flue gas detector and a control box are mounted, the control box containing a first controller, a wireless transceiver module, and a battery; a ventilation pipe is also mounted on a first partition, one end of which extends into the detection sealed cavity, and a third solenoid valve is mounted on the ventilation pipe; the wireless transceiver module wirelessly transmits signals to an external control computer; a first air pump and a second air pump are respectively located on the outer sides of both ends of the manifold, driving the movement of the flue gas detection structure through air pressure.

[0004] However, the existing technologies and the technologies mentioned above still have the following drawbacks: single-point data cannot reflect the uneven flow field in the pipeline, resulting in large measurement errors; the sensor probe is directly exposed to high dust and highly corrosive media, leading to rapid wear and short lifespan. Summary of the Invention

[0005] This invention provides a distributed flue gas measurement device, which solves the problems mentioned in the background art, such as the inability of single-point data to reflect the uneven flow field inside the pipeline, large measurement errors, and the rapid wear and short lifespan of the sensor probe directly exposed to high dust and highly corrosive media.

[0006] This invention provides the following technical solution: a distributed flue gas measuring device, comprising a first mounting plate, a second mounting plate, and a pipe, wherein the pipe is installed between the first mounting plate and the second mounting plate, and further comprising a test rod penetrating inside the pipe, one end of the test rod being connected to an ultrasonic detector; a driving component is provided at one end of the test rod, the driving component being capable of controlling the horizontal movement and vertical lifting of the test rod; a cleaning component is provided outside the pipe, the cleaning component comprising a cleaning roller, the cleaning roller being capable of rotating in contact with the surface of the test rod and the lead screw.

[0007] As an optional embodiment of the distributed flue gas measuring device of the present invention, a guide groove is provided on one side of the pipe, one end of the test rod passes through and is slidably disposed in the guide groove, a bellows plate is provided on one side of the guide groove, one end of the bellows plate is connected to one end of the guide groove, and the other end of the bellows plate is connected to the test rod.

[0008] As an optional embodiment of the distributed flue gas measuring device of the present invention, the test rod surface is fitted with a ring, the bellows plate is connected to the ring, and the ring and the guide groove are slidably engaged.

[0009] As an optional embodiment of the distributed flue gas measuring device of the present invention, the driving component includes a lead screw, and electric slides are provided on opposite sides of the first mounting plate and the second mounting plate. The lead screw is rotatably mounted between the two sets of electric slides. An internal threaded sleeve is threaded onto the surface of the lead screw, and a movable plate is connected to the outside of the internal threaded sleeve. The test rod is detachably connected to the movable plate.

[0010] As an optional embodiment of the distributed flue gas measuring device of the present invention, a connecting plate is connected to the moving block of the electric slide table, a vertical plate is installed on the connecting plate, a motor is installed on one side of the vertical plate, and a synchronous belt is installed on both the output shaft end and the lead screw end of the motor, and the two sets of synchronous belts are connected for transmission.

[0011] As an optional embodiment of the distributed flue gas measuring device of the present invention, the cleaning component further includes two sets of air chambers, the bottom of which is connected to air nozzles, and the air nozzles are symmetrically arranged on both sides of guide grooves.

[0012] As an optional embodiment of the distributed flue gas measuring device of the present invention, a piston rod is provided in the air chamber, a pressure plate is connected to the top of the piston rod, the pressure plate is slidably connected to the outer wall of the pipe, a second guide bar is installed on the outer wall of the pipe, and the pressure plate and the second guide bar are in clearance fit.

[0013] As an optional embodiment of the distributed flue gas measuring device of the present invention, a spring is connected between the pressure plate and the air chamber, and the spring is sleeved outside the piston rod.

[0014] As an optional embodiment of the distributed flue gas measuring device of the present invention, the cleaning component includes two sets of ear plates symmetrically connected to the outer wall of the pipe, the cleaning roller is rotatably installed between the two sets of ear plates, a gear is installed at one end of the cleaning roller, a first guide bar is provided on the outer wall of the pipe, a rack is slidably installed in the first guide bar, the rack is connected to one side of the vertical plate, and the rack and the gear mesh.

[0015] As an optional embodiment of the distributed flue gas measuring device of the present invention, wherein: one end of the cleaning roller is wound with a traction rope, one end of the traction rope is fixedly connected to one end of the cleaning roller, and the other end of the traction rope is fixedly connected to the bottom surface of the pressure plate.

[0016] The present invention has the following beneficial effects: 1. This distributed flue gas measuring device, through the inclusion of a drive assembly, enables the test rod to possess specific motion capabilities. Under the influence of the force generated by the drive assembly, it can move horizontally along the length of the pipe. Furthermore, the test rod can also move vertically upwards or downwards. The test rod then allows the ultrasonic testing instrument to perform multi-point measurements at different horizontal positions and vertical heights inside the pipe.

[0017] 2. This distributed flue gas measuring device, by incorporating a guide groove, provides precise guidance for the movement of the test rod, ensuring that it does not deviate during horizontal and vertical movement, thus guaranteeing the accuracy of the measurement position. The bellows plate design cleverly solves the sealing problem at the guide groove. As the test rod moves within the guide groove, the bellows plate extends or retracts accordingly. Specifically, one end of the bellows plate is fixed to one end of the guide groove, and the other end is connected to the test rod via a ring fitted onto its surface, with the ring slidingly engaging with the guide groove. This structure allows the bellows plate to always cover the opening of the guide groove, effectively preventing flue gas from leaking out of the duct and also preventing external dust and impurities from entering the duct and interfering with the measurement environment.

[0018] 3. This distributed flue gas measuring device, by setting up an air chamber and an air nozzle connected to the air chamber, generates a high-speed airflow that can clean the surface of the test rod. At the same time, it can also effectively blow away dust, soot and other debris attached to the edge of the guide groove, preventing these impurities from entering the pipe or affecting the sliding fit between the test rod and the guide groove during the movement of the test rod. When the ultrasonic detector is moved out, it can also be affected by the airflow, which blows away the impurities on its surface, thereby improving the measurement accuracy of the ultrasonic detector.

[0019] 4. In this distributed flue gas measuring device, the cleaning roller's surface can closely adhere to the surface of the test rod during rotation, effectively wiping away dust, oil, and other impurities adhering to its surface. This cleaning action, automatically triggered by the lifting and lowering movement of the vertical plate, ensures that the test rod remains clean throughout the entire working process, reducing measurement errors or mechanical failures caused by surface impurities. As the electric slide moves the ultrasonic detector out, the ultrasonic detector can also be cleaned promptly.

[0020] 5. This distributed flue gas measuring device utilizes a rack and pinion mechanism. The rack and pinion drive the gears to rotate, which in turn rotates the cleaning rollers. The traction rope is then wound up, applying a downward pulling force to the pressure plate. This force overcomes the spring's elasticity, causing the pressure plate to slide downwards along the second guide bar. This pushes the piston rod to compress the air in the air chamber, which is then ejected through the nozzles at high speed, achieving air jet cleaning of the test rod and ultrasonic detector. In this way, the mechanical wiping of the cleaning rollers and the airflow cleaning of the nozzles are organically combined through the movement of the vertical plate driven by the electric slide, forming a linked cleaning mechanism. This significantly improves the cleaning effect and the automation level of the device, ensuring the long-term stable and reliable operation of the measuring device. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0022] Figure 2 For the present invention Figure 1 Enlarged schematic diagram of the structure at point A in the middle.

[0023] Figure 3 This is a top view of the structure of the present invention.

[0024] Figure 4 This is a partial cross-sectional view of the present invention.

[0025] Figure 5 For the present invention Figure 4 Enlarged schematic diagram of the structure at point B.

[0026] Figure 6 This is a schematic diagram of the cross-sectional structure of the pipeline of the present invention.

[0027] Figure 7 For the present invention Figure 6 Enlarged schematic diagram of the structure at point C.

[0028] Figure 8 For the present invention Figure 6 Enlarged schematic diagram of the structure at point D.

[0029] In the diagram: 1. First mounting plate; 2. Second mounting plate; 3. Pipe; 4. Test rod; 5. Lead screw; 6. Electric slide table; 7. Connecting plate; 8. Motor; 9. Synchronous belt; 10. Moving plate; 11. Internal threaded sleeve; 12. Ultrasonic detector; 13. Guide groove; 14. Vertical plate; 15. Rack; 16. Gear; 17. Cleaning roller; 18. Ear plate; 19. Traction rope; 20. Air chamber; 21. Piston rod; 22. Spring; 23. Pressure plate; 24. Nozzle; 25. First guide bar; 26. Second guide bar. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Example 1, please refer to Figures 1 to 8 The present invention discloses a distributed flue gas measuring device, including a first mounting plate 1, a second mounting plate 2 and a pipe 3. The pipe 3 is installed between the first mounting plate 1 and the second mounting plate 2. The device also includes a test rod 4 that passes through the pipe 3. One end of the test rod 4 is connected to an ultrasonic detector 12, and a drive component is provided at one end of the test rod 4. The drive component can control the horizontal movement and vertical lifting of the test rod 4.

[0032] In a specific embodiment, a first mounting plate 1 and a second mounting plate 2 are respectively provided. The pipe 3 is a measuring pipe, and fixing the pipe 3 between the first mounting plate 1 and the second mounting plate 2 facilitates the placement of multiple pipes 3 in multiple areas to be measured within the flow channel via the first mounting plate 1 and the second mounting plate 2, and also facilitates the connection and fixation of the pipes 3. The test rod 4 possesses specific motion capabilities; it can move horizontally along the length of the pipe 3 under the influence of the force generated by the driving component. Furthermore, the test rod 4 can also move vertically upwards or downwards. In this way, the test rod 4 can drive the ultrasonic testing instrument 12 to perform multi-point measurements at different horizontal positions and different vertical heights inside the pipe 3.

[0033] This distributed measurement method effectively captures the non-uniformity of the flow field distribution within the channel. In stark contrast to traditional single-point measurement methods, which only acquire local data that often fails to represent the overall flow field and can easily lead to biased judgments, the measurement method in this embodiment avoids this problem. It significantly reduces measurement errors and greatly improves the representativeness and accuracy of the acquired data.

[0034] In practice, when phenomena such as eddies or velocity stratification exist within the flow channel, using traditional single-point measurement methods within a single pipe 3 may only yield data for a localized area, failing to provide a comprehensive understanding of the actual conditions in each region of the pipe. However, by moving the test rod 4 to measure different regions in this embodiment, the true conditions of each region can be comprehensively and meticulously reflected. This undoubtedly provides a more reliable and valuable basis for subsequent detailed analysis of the flow field within the pipe and related processing work.

[0035] Specifically, the drive assembly includes a lead screw 5, and electric slides 6 are provided on opposite sides of the first mounting plate 1 and the second mounting plate 2. The lead screw 5 is rotatably mounted between the two sets of electric slides 6. An internal threaded sleeve 11 is threaded onto the surface of the lead screw 5, and a moving plate 10 is connected to the outside of the internal threaded sleeve 11. The test rod 4 is detachably connected to the moving plate 10. A connecting plate 7 is connected to the moving block of the electric slide 6, and a vertical plate 14 is mounted on the connecting plate 7. A motor 8 is mounted on one side of the vertical plate 14. A synchronous belt 9 is mounted on both the output shaft end of the motor 8 and one end of the lead screw 5, and the two sets of synchronous belts 9 are connected for transmission.

[0036] In actual operation, when the electric slide table 6 is started, its moving block slides along the slide table track, driving the vertical plate 14, the motor 8 mounted on the vertical plate 14, and the lead screw 5 to move vertically as a whole via the connecting plate 7. This vertical movement directly determines the height position of the test rod 4 inside the pipe 3, allowing the test rod 4 to reach different vertical levels for measurement. The start of the motor 8 transmits power to the lead screw 5 via the synchronous belt 9, driving the lead screw 5 to rotate. Since the internal threaded sleeve 11 is threadedly connected to the lead screw 5, and the internal threaded sleeve 11 is connected to the test rod 4 via the moving plate 10, the rotation of the lead screw 5 is converted into horizontal movement of the internal threaded sleeve 11, the moving plate 10, and the test rod 4 along the axial direction of the lead screw 5. This horizontal movement, in conjunction with the aforementioned vertical lifting and lowering, allows the test rod 4 to form a three-dimensional measurement area inside the pipe 3, thereby achieving comprehensive coverage of the cross-section and different longitudinal sections of the pipe 3, greatly enriching the spatial distribution information of the measurement data, and laying a solid foundation for accurate analysis of flow field characteristics. The detachable connection design between the test rod 4 and the movable plate 10 also facilitates subsequent maintenance, replacement or upgrading of different types of sensor probes, enhancing the versatility and maintainability of the device.

[0037] Example 2 is an explanation based on Example 1. For details, please refer to [link / reference]. Figures 1 to 8 It also includes a guide groove 13 on one side of the pipe 3, one end of the test rod 4 passing through and slidingly disposed in the guide groove 13, a bellows plate on one side of the guide groove 13, one end of the bellows plate being connected to one end of the guide groove 13, the other end of the bellows plate being connected to the test rod 4, a ring being sleeved on the surface of the test rod 4, the bellows plate and the ring being connected, and the ring and the guide groove 13 being slidably engaged.

[0038] In this embodiment, the guide groove 13 provides precise guidance for the movement of the test rod 4, ensuring that it does not deviate during horizontal and vertical movement, thereby guaranteeing the accuracy of the measurement position. The bellows plate design cleverly solves the sealing problem at the guide groove 13. When the test rod 4 moves within the guide groove 13, the bellows plate extends or retracts accordingly.

[0039] Specifically, one end of the bellows plate is fixed to one end of the guide groove 13, and the other end is connected to the test rod 4 via a ring fitted onto the surface of the test rod 4, with the ring slidingly engaging with the guide groove 13. This structure ensures that the bellows plate always covers the opening of the guide groove 13, effectively preventing the leakage of flue gas from inside the pipe 3 through the guide groove 13, while also preventing external dust and impurities from entering the pipe 3 and interfering with the measurement environment. The ring not only enhances the stability of the connection between the bellows plate and the test rod 4, but also reduces friction and wear on the bellows plate as it moves with the test rod 4, extending its service life and ensuring the long-term reliability of the sealing effect. Furthermore, the ring does not interfere with the reciprocating movement of the test rod 4 driven by the electric slide table 6.

[0040] Example 3 is an explanation based on Example 1. For details, please refer to [link / reference]. Figures 1 to 8 A cleaning assembly is installed on the outside of the pipe 3. The cleaning assembly includes a cleaning roller 17, which can rotate in contact with the surfaces of the test rod 4 and the lead screw 5. The cleaning assembly also includes two sets of air chambers 20. The bottom of the air chamber 20 is connected to an air nozzle 24, and the air nozzle 24 is symmetrically arranged on both sides of the guide groove 13. A piston rod 21 is installed inside the air chamber 20. A pressure plate 23 is connected to the top of the piston rod 21. The pressure plate 23 is slidably connected to the outer wall of the pipe 3. A second guide bar 26 is installed on the outer wall of the pipe 3. The pressure plate 23 and the second guide bar 26 are fitted with a clearance fit.

[0041] In this embodiment, downward pressure is applied to the pressure plate 23. Due to the clearance fit between the pressure plate 23 and the second guide bar 26 on the outer wall of the pipe 3, the pressure plate 23 can slide stably downward along the guide bar 26. The downward movement of the pressure plate 23 will push the piston rod 21 to move downward synchronously, thereby compressing the air inside the air chamber 20. As the air pressure inside the air chamber 20 increases, the compressed air will be ejected at high speed through the nozzle 24 connected to the bottom. The nozzles 24 are symmetrically arranged on both sides of the guide groove 13. This layout ensures that the ejected airflow can directly act on the opening area of ​​the guide groove 13 and the surface of the test rod 4. It should be noted that as the test rod 4 moves out of the pipe 3, the ultrasonic detector 12 will also move between the two sets of nozzles 24. The high-speed airflow can clean the surface of the test rod 4 and effectively blow away dust, soot and other debris attached to the edge of the guide groove 13, preventing these impurities from entering the pipe 3 or affecting the sliding fit between the test rod 4 and the guide groove 13 during the movement of the test rod 4. When the ultrasonic detector 12 is moved out, the impurities on its surface can also be blown away by the airflow, improving the measurement accuracy of the ultrasonic detector 12.

[0042] Example 4 is an explanation based on Example 1. For details, please refer to [link / reference]. Figures 1 to 8The cleaning assembly also includes two sets of ear plates 18 symmetrically connected to the outer wall of the pipe 3. A cleaning roller 17 is rotatably mounted between the two sets of ear plates 18. A gear 16 is mounted on one end of the cleaning roller 17. A first guide bar 25 is provided on the outer wall of the pipe 3. A rack 15 is slidably mounted inside the first guide bar 25. The rack 15 is connected to one side of the vertical plate 14, and the rack 15 and the gear 16 mesh. A traction rope 19 is wound around one end of the cleaning roller 17. One end of the traction rope 19 is fixedly connected to one end of the cleaning roller 17, and the other end of the traction rope 19 is fixedly connected to the bottom surface of the pressure plate 23. A spring 22 is connected between the pressure plate 23 and the air chamber 20. The spring 22 is sleeved on the outside of the piston rod 21.

[0043] In this embodiment, when the electric slide 6 moves the vertical plate 14 vertically, the rack 15 connected to one side of the vertical plate 14 slides synchronously along the first guide bar 25 on the outer wall of the pipe 3. Since the rack 15 meshes with the gear 16 at one end of the cleaning roller 17, the sliding of the rack 15 drives the gear 16 to rotate, thereby driving the cleaning roller 17 to rotate between the two sets of ear plates 18. During the rotation, the surface of the cleaning roller 17 can closely adhere to the surface of the test rod 4, thereby effectively wiping and cleaning the dust, oil and other impurities attached to its surface. This cleaning action, which is automatically triggered by the lifting and lowering movement of the vertical plate 14, ensures that the test rod 4 remains clean throughout the entire working process, reducing measurement errors or mechanical failures caused by surface impurities. As the electric slide 6 moves the ultrasonic detector 12 out, the ultrasonic detector 12 can also be cleaned in a timely manner.

[0044] Specifically, when the vertical plate 14 moves the rack 15 horizontally, the rack 15 meshes with the gear 16, causing the gear 16 to rotate. The gear 16 then rotates the cleaning roller 17, and the traction rope 19 is wound up, thus applying a downward pulling force to the pressure plate 23. This pulling force overcomes the elastic force of the spring 22, causing the pressure plate 23 to slide downward along the second guide bar 26, pushing the piston rod 21 to compress the air in the air chamber 20, which is then ejected through the nozzle 24 at a high speed, achieving air jet cleaning of the test rod 4 and the ultrasonic detector 12. In this way, the mechanical wiping of the cleaning roller 17 and the airflow cleaning of the nozzle 24 are organically combined through the movement of the vertical plate 14 driven by the electric slide table 6, forming a linked cleaning mechanism. This significantly improves the cleaning effect and the automation level of the device, ensuring the long-term stable and reliable operation of the measuring device.

[0045] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0046] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A distributed flue gas measuring device, comprising a first mounting plate (1), a second mounting plate (2), and a pipe (3), wherein the pipe (3) is installed between the first mounting plate (1) and the second mounting plate (2), characterized in that: It also includes a test rod (4) that runs through the pipe (3), one end of which is connected to an ultrasonic detector (12). A drive assembly is provided at one end of the test rod (4), and the drive assembly can control the horizontal movement and vertical lifting of the test rod (4); The pipe (3) is provided with a cleaning component, which includes a cleaning roller (17) that can rotate in contact with the test rod (4) and the lead screw (5).

2. The distributed flue gas measurement device according to claim 1, characterized in that: A guide groove (13) is provided on one side of the pipe (3). One end of the test rod (4) passes through and is slidably disposed in the guide groove (13). A bellows plate is provided on one side of the guide groove (13). One end of the bellows plate is connected to one end of the guide groove (13), and the other end of the bellows plate is connected to the test rod (4).

3. The distributed flue gas measurement device according to claim 2, characterized in that: The test rod (4) is fitted with a ring, the bellows plate is connected to the ring, and the ring and the guide groove (13) are in sliding fit.

4. A distributed flue gas measuring device according to claim 2, characterized in that: The drive assembly includes a lead screw (5), and electric slides (6) are provided on opposite sides of the first mounting plate (1) and the second mounting plate (2). The lead screw (5) is rotatably mounted between the two sets of electric slides (6). An internal thread sleeve (11) is threadedly connected to the surface of the lead screw (5). A movable plate (10) is connected to the outside of the internal thread sleeve (11). The test rod (4) is detachably connected to the movable plate (10).

5. A distributed flue gas measuring device according to claim 4, characterized in that: A connecting plate (7) is connected to the moving block of the electric slide (6). A vertical plate (14) is installed on the connecting plate (7). A motor (8) is installed on one side of the vertical plate (14). A synchronous belt (9) is installed on the output shaft end of the motor (8) and one end of the lead screw (5). The two sets of synchronous belts (9) are connected in a transmission.

6. A distributed flue gas measuring device according to claim 5, characterized in that: The cleaning assembly also includes two sets of air chambers (20), the bottom of which is connected to an air nozzle (24), and the air nozzle (24) is symmetrically provided with guide grooves (13) on both sides.

7. A distributed flue gas measurement device according to claim 6, characterized in that: A piston rod (21) is provided inside the air chamber (20). A pressure plate (23) is connected to the top of the piston rod (21). The pressure plate (23) is slidably connected to the outer wall of the pipe (3). A second guide bar (26) is installed on the outer wall of the pipe (3). The pressure plate (23) and the second guide bar (26) are in clearance fit.

8. A distributed flue gas measuring device according to claim 7, characterized in that: A spring (22) is connected between the pressure plate (23) and the air chamber (20), and the spring (22) is sleeved on the outside of the piston rod (21).

9. A distributed flue gas measurement device according to claim 1, characterized in that: The cleaning assembly includes two sets of ear plates (18) symmetrically connected to the outer wall of the pipe (3). The cleaning roller (17) is rotatably installed between the two sets of ear plates (18). A gear (16) is installed at one end of the cleaning roller (17). A first guide bar (25) is provided on the outer wall of the pipe (3). A rack (15) is slidably installed in the first guide bar (25). The rack (15) is connected to one side of the upright plate (14). The rack (15) and the gear (16) mesh.

10. A distributed flue gas measurement device according to claim 9, characterized in that: One end of the cleaning roller (17) is wound with a traction rope (19), one end of the traction rope (19) is fixedly connected to one end of the cleaning roller (17), and the other end of the traction rope (19) is fixedly connected to the bottom surface of the pressure plate (23).

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