Visual imaging device for flue gas pipeline of thermal power plant

Abstract

The invention discloses a visual imaging device for a flue gas pipeline of a thermal power plant, and relates to the technical field of flue gas equipment of the thermal power plant, the visual imaging device comprises a base, a phase measurement camera and a protective shell, and the protective shell sleeves the peripheral side of the phase measurement camera. A cleaning device and a rotary driving part are installed on the base, an output shaft of the rotary driving part is fixedly connected with the phase measurement camera, and the peripheral side of the protective shell abuts against and is matched with the cleaning device, so that the protective shell can rotate along with the phase measurement camera under the driving of the rotary driving part; and dust on the periphery of the protective shell falls off under the friction action of the cleaning device, so that the detection precision of the visual imaging device can be ensured, the procedures of regular shutdown and manual cleaning can be reduced, and the continuous working efficiency of the visual imaging device can be improved.

Description

Technical Field

[0001] This application relates to the field of flue gas equipment technology for thermal power plants, and in particular to a visual imaging device for flue gas ducts in thermal power plants. Background Technology

[0002] Thermal power plants, as key facilities for generating electricity by burning fossil fuels or biomass energy, work by converting heat energy into electrical energy. To ensure that flue gas emissions meet environmental standards, the flue gas treatment system of a thermal power plant typically includes boilers, flue gas ducts, dust collectors, desulfurization towers, and denitrification devices. Flue gas ducts play a crucial role in this process, transporting the flue gas generated by boiler combustion to subsequent treatment equipment and ultimately discharging it through the chimney. However, during long-term operation, flue gas ducts are often exposed to harsh environments such as high temperatures, corrosion, wear, and vibration, making them prone to problems such as corrosion, wall thinning, cracks, deformation, and leaks. If these problems are not detected and addressed in a timely manner, they may lead to major accidents such as pipe rupture and system shutdown, causing equipment damage and production interruptions.

[0003] Currently, the inspection of flue gas ducts typically relies on visual imaging equipment. However, because flue gas contains a large amount of soot and fly ash, these substances easily accumulate on the surface of the imaging equipment, leading to blurred images and loss of detail, thus affecting the accurate identification of defects. Furthermore, traditional inspection devices usually do not consider the pollution characteristics of flue gas ducts. Although dust covers are installed to reduce dust pollution, these covers also quickly accumulate dust. Therefore, the inspection equipment needs to be shut down periodically and manually disassembled for cleaning, which is not only time-consuming but also affects inspection efficiency and the normal operation of the power plant due to frequent shutdowns. Summary of the Invention

[0004] The purpose of this application is to provide a visual imaging device for flue gas ducts in thermal power plants, which aims to solve the problems of cumbersome operation, time-consuming and labor-intensive operation of existing flue gas duct inspection devices during the cleaning process.

[0005] To achieve the above objectives, this application proposes a visual imaging device for flue gas ducts in thermal power plants, the visual imaging device for flue gas ducts in thermal power plants comprising:

[0006] A base and a cleaning device disposed on the base;

[0007] The system includes a rotary drive, a phase measurement camera, and a protective housing fitted around the phase measurement camera. The rotary drive is mounted on the base, and its output shaft is fixedly connected to the phase measurement camera. The protective housing abuts against the cleaning device, causing the protective housing to rotate with the phase measurement camera under the drive of the rotary drive, so that dust on the periphery of the protective housing is dislodged by friction with the cleaning device.

[0008] In one embodiment, the cleaning device includes a telescopic drive member and a cleaning mechanism connected to the telescopic drive member. The telescopic drive member is disposed on the base, and the base has a telescopic hole. The cleaning mechanism slides in cooperation with the inner wall of the telescopic hole. The telescopic drive member can drive the cleaning mechanism to extend out of the telescopic hole so that the cleaning mechanism abuts against the periphery of the protective shell. The telescopic drive member can also drive the cleaning mechanism to retract into the telescopic hole.

[0009] In one embodiment, the cleaning mechanism includes a cleaning component, a sealing plate, and a connecting component. The connecting component is connected to the telescopic drive component. The cleaning component is sleeved on the connecting component. The sealing plate is fixed to the end of the connecting component facing away from the telescopic drive component. Both the cleaning component and the sealing plate are slidably engaged with the inner wall of the telescopic hole. When the telescopic drive component extends, it can drive the connecting component to move the cleaning component and the sealing plate out of the telescopic hole, so that the cleaning component abuts against the periphery of the protective shell. When the telescopic drive component retracts, it can drive the connecting component to move the cleaning component and the sealing plate back into the telescopic hole, so that the sealing plate closes the telescopic hole.

[0010] In one embodiment, the device further includes an actuator and a transmission component. The actuator is slidably sleeved on the connecting member, and the transmission component is fixedly sleeved on the output shaft of the rotary drive component. The transmission component engages with the actuator for transmission, and the connecting member is rotatably connected to the telescopic drive component, so that the connecting member can rotate under the drive of the actuator or slide along the telescopic hole under the drive of the telescopic drive component.

[0011] In one embodiment, the base includes a support base and an installation compartment disposed on the support base. The rotation drive is disposed on the support base, and the telescopic drive is disposed on the support base. The installation compartment has the telescopic hole on the side facing the protective shell. The connector passes through and extends into the side of the installation compartment away from the protective shell and is connected to the cleaning component and the sealing plate.

[0012] In one embodiment, the system further includes a detection unit and a control unit that are electrically connected to each other. The detection unit is electrically connected to the telescopic drive member and is used to detect the telescopic amount of the telescopic drive member and output the telescopic amount information of the telescopic drive member. The control unit is electrically connected to both the telescopic drive member and the rotary drive member and is used to compare the received telescopic amount information with a preset telescopic amount threshold and control the telescopic extension and contraction of the telescopic drive member and the start and stop of the rotary drive member according to the comparison result.

[0013] In one embodiment, the device further includes a guide device and a limiting device. The guide device is slidably connected to the base and extends away from the base in a direction perpendicular to the axis of the protective housing. The limiting device is fixedly connected to the base and abuts against the guide device, thereby restricting the sliding of the guide device. When the limiting device moves away from the guide device, the guide device can slide in a direction perpendicular to the axis of the protective housing to adjust the distance between the end of the guide device away from the base and the base.

[0014] In one embodiment, the number of the guiding devices is at least four, and the at least four guiding devices are distributed at intervals along the periphery of the base, with the number of limiting devices corresponding one-to-one with the number of the guiding devices.

[0015] In one embodiment, the guiding device includes a rolling mechanism, a rotation drive member disposed on the base, and a guiding mechanism slidably connected to the base. One end of the guiding mechanism passes through the base and is drivenly connected to the rotation drive member, and the other end of the guiding mechanism is drivenly connected to the rolling mechanism. The guiding mechanism can slide along the base or rotate under the drive of the rotation drive member. The sliding of the guiding mechanism can adjust the distance between the rolling mechanism and the base, and the rotation of the guiding mechanism can drive the rolling mechanism to rotate.

[0016] In one embodiment, the guiding mechanism includes a guide rod, a first meshing gear and a second meshing gear respectively connected to both ends of the guide rod. The first meshing gear includes a first driving meshing gear and a first driven meshing gear. The first driving meshing gear is fixedly sleeved on the output shaft of the rotary drive member, and the first driven meshing gear is fixedly connected to the base. The first driven meshing gear is slidably sleeved on one end of the guide rod so that the guide rod can slide along the axial direction of the first driven meshing gear. The first driving meshing gear and the first driven meshing gear mesh and drive each other. The second meshing gear includes a second driving meshing gear and a second driven meshing gear. The second driving meshing gear is fixedly sleeved on the other end of the guide rod, and the second driven meshing gear is fixedly sleeved on the rolling mechanism. The second driving meshing gear and the second driven meshing gear mesh and drive each other.

[0017] The above-mentioned technical solution of this application has at least the following beneficial technical effects:

[0018] The technical solution of this application adopts a protective shell with a contacting and cooperating with the cleaning device, so that the protective shell rotates together with the phase measurement camera under the drive of the rotary drive component, so that the dust on the periphery of the protective shell is removed by friction with the cleaning device. This can not only ensure the detection accuracy of the visual imaging device, but also reduce the process of periodic shutdown and manual cleaning, thereby improving the continuous working efficiency of the visual imaging device. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of an embodiment of the visual imaging device for flue gas ducts in thermal power plants provided in this application when it has a protective shell;

[0020] Figure 2 This is a schematic diagram of the structure of an embodiment of the visual imaging device for flue gas ducts in thermal power plants provided in this application when there is no protective shell;

[0021] Figure 3 This is a schematic diagram of the internal structure of the installation compartment of an embodiment of the visual imaging device for flue gas ducts in thermal power plants provided in this application;

[0022] Figure 4 This is a schematic diagram of the structure of a visual imaging device for a thermal power plant flue gas duct provided in this application, with the sealing plate in a closed state.

[0023] Figure label:

[0024] 100. Base; 110. Telescopic opening; 120. Support base; 130. Mounting compartment; 200. Cleaning device; 210. Telescopic drive component; 220. Cleaning mechanism; 221. Cleaning component; 222. Enclosure plate; 223. Connector; 300. Rotation drive component; 400. Phase measurement camera; 500. Protective housing; 600. Actuator; 700. Transmission component; 800. Guide device; 810. Rolling mechanism Structure; 811, roller; 812, roller; 820, rotation drive component; 830, guide mechanism; 831, guide rod; 832, first meshing gear; 8321, first driving meshing gear; 8322, first driven meshing gear; 833, second meshing gear; 8331, second driving meshing gear; 8332, second driven meshing gear; 900, limiting device; 910, limiting groove; 920, limiting bolt. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this application. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concepts of this application.

[0026] The embodiments described in this application are only some, not all, of the embodiments described herein. All other embodiments obtained by those skilled in the art based on the embodiments described herein without inventive effort are within the scope of protection of this application. In the description of this application, it should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] Thermal power plants, as key facilities for generating electricity by burning fossil fuels or biomass energy, work by converting heat energy into electrical energy. To ensure that flue gas emissions meet environmental standards, the flue gas treatment system of a thermal power plant typically includes boilers, flue gas ducts, dust collectors, desulfurization towers, and denitrification devices. Flue gas ducts play a crucial role in this process, transporting the flue gas generated by boiler combustion to subsequent treatment equipment and ultimately discharging it through the chimney. However, during long-term operation, flue gas ducts are often exposed to harsh environments such as high temperatures, corrosion, wear, and vibration, making them prone to problems such as corrosion, wall thinning, cracks, deformation, and leaks. If these problems are not detected and addressed in a timely manner, they may lead to major accidents such as pipe rupture and system shutdown, causing equipment damage and production interruptions.

[0028] Currently, the inspection of flue gas ducts typically relies on visual imaging equipment. However, because flue gas contains a large amount of soot and fly ash, these substances easily accumulate on the surface of the imaging equipment, leading to blurred images and loss of detail, thus affecting the accurate identification of defects. Furthermore, traditional inspection devices usually do not consider the pollution characteristics of flue gas ducts. Although dust covers are installed to reduce dust pollution, these covers also quickly accumulate dust. Therefore, the inspection equipment needs to be shut down periodically and manually disassembled for cleaning, which is not only time-consuming but also affects inspection efficiency and the normal operation of the power plant due to frequent shutdowns.

[0029] To address the aforementioned technical problems, this application proposes a visual imaging device for flue gas ducts in thermal power plants. Please refer to [link to relevant documentation]. Figures 1 to 3 In one embodiment of this application, the visual imaging device for the flue gas duct of a thermal power plant includes a base 100, a cleaning device 200, a rotary drive 300, a phase measurement camera 400, and a protective housing 500. The cleaning device 200 and the rotary drive 300 are both mounted on the base 100. The protective housing 500 is fitted around the phase measurement camera 400. The output shaft of the rotary drive 300 is fixedly connected to the phase measurement camera 400. The periphery of the protective housing 500 abuts against the cleaning device 200, causing the protective housing 500 to rotate together with the phase measurement camera 400 under the drive of the rotary drive 300, so that dust on the periphery of the protective housing 500 is dislodged by friction with the cleaning device 200.

[0030] The technical solution of this application adopts the method of abutting and cooperating the periphery of the protective shell 500 with the cleaning device 200, so that the protective shell 500 rotates together with the phase measurement camera 400 under the drive of the rotary drive 300, so that the dust on the periphery of the protective shell 500 is removed by friction with the cleaning device 200. This can not only ensure the detection accuracy of the visual imaging device, but also reduce the process of periodic shutdown and manual cleaning, thereby improving the continuous working efficiency of the visual imaging device.

[0031] Please see Figure 3 and Figure 4 In one embodiment, the cleaning device 200 includes a telescopic drive member 210 and a cleaning mechanism 220 connected to the telescopic drive member 210. The telescopic drive member 210 can be a hydraulic cylinder, a pneumatic cylinder, or an electric push rod, and is not limited thereto. The telescopic drive member 210 is disposed on a base 100, which has a telescopic hole 110. The cleaning mechanism 220 slides within the inner wall of the telescopic hole 110. The telescopic drive member 210 can drive the cleaning mechanism 220 to extend out of the telescopic hole 110, allowing the cleaning mechanism 220 to abut against the periphery of the protective housing 500. The telescopic drive member 210 can also drive the cleaning mechanism 220 to retract into the telescopic hole 110. This technical solution, by using the telescopic drive member 210 to drive the cleaning mechanism 220 to extend and retract, allows the cleaning mechanism 220 to fit tightly against the periphery of the protective housing 500, effectively cleaning the surface of the protective housing 500. This avoids the complexity of manual operation, improves cleaning efficiency, and ensures the long-term stable operation of the equipment.

[0032] Please see Figure 3 and Figure 4In one embodiment, the cleaning mechanism 220 includes a cleaning component 221, a sealing plate 222, and a connecting component 223. The connecting component 223 is connected to the telescopic drive component 210. The cleaning component 221 is sleeved on the connecting component 223, and the sealing plate 222 is fixed to the end of the connecting component 223 facing away from the telescopic drive component 210. Both the cleaning component 221 and the sealing plate 222 slide against the inner wall of the telescopic hole 110. When the telescopic drive component 210 extends, it can drive the connecting component 223 to extend the cleaning component 221 and the sealing plate 222 out of the telescopic hole 110, so that the cleaning component 221 abuts against the periphery of the protective shell 500, thereby cleaning the dust on the protective shell 500 and improving the cleaning efficiency of the protective shell 500. The retraction drive component 210 retracts, driving the connector 223 to retract the cleaning component 221 and the sealing plate 222 into the telescopic hole 110. This allows the sealing plate 222 to close the telescopic hole 110, preventing external dust from entering and contaminating the cleaning component 221, thus maintaining its cleanliness. This technical solution, through the synergistic effect of the cleaning component 221 and the sealing plate 222, ensures the cleanliness of the cleaning component 221 while cleaning dust from the surface of the protective housing 500, effectively improving cleaning efficiency and extending the service life of the cleaning system.

[0033] Please see Figures 1 to 4In one embodiment, the device further includes an actuator 600 and a transmission member 700. The actuator 600 is slidably sleeved on the connector 223, and the transmission member 700 is fixedly sleeved on the output shaft of the rotary drive 300. The transmission member 700 engages with the actuator 600 for transmission. The connector 223 is rotatably connected to the telescopic drive 210, so that the connector 223 can rotate under the drive of the actuator 600 or slide along the telescopic hole 110 under the drive of the telescopic drive 210. Specifically, first, the drive starts working, and the connector 223 slides out along the telescopic hole 110 under the drive of the drive, thereby causing the cleaning member 221 to extend from the telescopic hole 110 and abut against the periphery of the protective shell 500. Subsequently, the drive unit pauses operation, and the actuator 600 begins operation. The connecting member 223 rotates under the drive of the actuator 600, thereby causing the cleaning member 221 to rotate. This causes dust from the protective housing 500 to fall off due to friction between the cleaning member 221 and the protective housing 500. After cleaning is completed, the actuator 600 pauses operation, and the drive unit resumes operation. The connecting member 223 slides back along the telescopic hole 110 under the drive of the drive unit, causing the cleaning member 221 and the sealing plate 222 to retract into the telescopic hole 110. This allows the sealing plate 222 to close the telescopic hole 110, preventing external dust from entering and contaminating the cleaning member 221. This technical solution uses the cooperation of the drive component and the actuator 600 to drive the cleaning component 221 to achieve both telescopic and rotational movements. It can not only efficiently clean the dust on the surface of the protective shell 500, but also seal the telescopic hole 110 through the sealing plate 222 after cleaning to prevent external dust from entering and maintain the cleanliness of the cleaning component 221, thereby improving the overall cleaning effect and the reliability of equipment operation.

[0034] Please see Figures 1 to 4 In one embodiment, the base 100 includes a support 120 and a mounting compartment 130 disposed on the support 120. A rotary drive 300 and a telescopic drive 210 are disposed on the support 120. The mounting compartment 130 has a telescopic hole 110 on the side facing the protective housing 500. A connector 223 penetrates and extends into the mounting compartment 130 on the side facing away from the protective housing 500, connecting to the cleaning component 221 and the sealing plate 222. This technical solution, by providing the mounting compartment 130, effectively concentrates and protects key components such as the rotary drive 300, the telescopic drive 210, and the connector 223, improving the system's stability and durability. The design of the mounting compartment 130 allows the drive component and connector 223 to operate better within the enclosed space, reducing interference from the external environment. It also helps reduce the impact of external dust or other contaminants on the internal structure, ensuring the long-term performance of the cleaning component 221 and related components. By rationally arranging the drive components and connectors 223, the installation compartment 130 also simplifies the assembly and maintenance of the entire structure, and improves the reliability and ease of operation of the equipment.

[0035] Please see Figure 3 In one embodiment, the system further includes a detection unit and a control unit electrically connected to each other. The detection unit is electrically connected to the telescopic drive component 210 and is used to detect the telescopic amount of extension and retraction of the telescopic drive component 210 and output the telescopic amount information of the telescopic drive component 210. The control unit is electrically connected to both the telescopic drive component 210 and the rotary drive component 300. The control unit is used to compare the received telescopic amount information with a preset telescopic amount threshold and control the extension and retraction of the telescopic drive component 210 and the start and stop of the rotary drive component 300 according to the comparison result. This technical solution, by introducing a detection unit and a control unit, can monitor the telescopic amount of extension and retraction of the telescopic drive component 210 in real time and automatically adjust the working state of the drive component according to the preset threshold, ensuring precise control of the cleaning process and efficient operation of the equipment. The real-time feedback provided by the detection unit enables the control unit to accurately adjust the extension and retraction of the telescopic drive component 210 according to the actual situation, avoiding excessive or insufficient extension and retraction, and improving the system's adaptability and operating efficiency. This control method enables the equipment to maintain stable performance under different working environments, while reducing human intervention, improving the convenience of operation and the reliability of the system.

[0036] Please see Figure 1 and Figure 3In one embodiment, the device further includes a guide device 800 and a limiting device 900. The guide device 800 is slidably connected to the base 100 and extends away from the base 100 in a direction perpendicular to the axis of the protective shell 500. The limiting device 900 is fixedly connected to the base 100 and abuts against the guide device 800, thereby limiting the sliding of the guide device 800. When the limiting device 900 moves away from the guide device 800, the guide device 800 can slide in a direction perpendicular to the axis of the protective shell 500 to adjust the distance between the end of the guide device 800 away from the base 100 and the base 100, thereby adapting to flue gas ducts with different inner diameters. Specifically, the limiting device 900 includes a limiting groove 910 and a limiting bolt 920. The limiting groove 910 is fixedly connected to the base 100. The guide device 800 is disposed in the limiting groove 910 and is clearance-fitted with the limiting groove 910. A threaded hole matching the limiting bolt 920 is opened on one side wall of the limiting groove 910. The threaded hole extends through the limiting groove 910. The limiting bolt 920 is threadedly connected to the threaded hole. By rotating the limiting bolt 920, the limiting bolt 920 can abut against the guide device 800 or move away from the guide device 800, thereby limiting the guide device 800. Alternatively, a sliding pin is provided on one side of the limiting groove 910. When the guide device 800 slides to a predetermined position, the pin is inserted into the guide device 800, so that the pin abuts against the guide device 800, thereby limiting the guide device 800. This is not limited here. This technical solution, through the setting of a guide device 800 and a limiting device 900, achieves precise control over the sliding range of the guide device 800. The distance of the device can be adjusted according to the inner diameter of the flue gas duct, ensuring that the equipment can adapt to flue gas ducts of different sizes, thus enhancing the equipment's adaptability and flexibility. The limiting device 900 effectively prevents the guide device 800 from sliding excessively or becoming unstable, ensuring the safety and stability of the system. At the same time, the sliding design of the guide device 800 simplifies the installation and adjustment of the equipment, improving operational convenience and system compatibility.

[0037] Please see Figures 1 to 4 In one embodiment, at least four guide devices 800 are provided, spaced apart along the periphery of the base 100. The number of limiting devices 900 corresponds one-to-one with the number of guide devices 800. This technical solution, by providing multiple guide devices 800 and limiting devices 900, effectively improves the adaptability of the equipment in different working environments, ensuring the smoothness and stability of the sliding of the guide devices 800. Precise control of the sliding position of the guide devices 800 avoids uneven friction or tilting, improving the system's operating efficiency and reliability. Simultaneously, the one-to-one correspondence between the limiting devices 900 and the guide devices 800 allows each guide device 800 to be adjusted independently, enhancing the equipment's flexibility and adjustability, facilitating rapid adjustment and precise operation in flue gas ducts with different inner diameters.

[0038] Please see Figure 2 In one embodiment, the guiding device 800 includes a rolling mechanism 810, a rotation drive 820 disposed on the base 100, and a guiding mechanism 830 slidably connected to the base 100. One end of the guiding mechanism 830 passes through the base 100 and is driven by the rotation drive 820, while the other end of the guiding mechanism 830 is driven by the rolling mechanism 810. The guiding mechanism 830 can slide along the base 100 or rotate under the drive of the rotation drive 820. Sliding the guiding mechanism 830 can adjust the distance between the rolling mechanism 810 and the base 100, and rotating the guiding mechanism 830 can drive the rolling mechanism 810 to rotate. Specifically, the rolling mechanism 810 includes a roller 811 and rollers 812 connected to both ends of the roller 811. The roller 811 is driven by the guiding mechanism 830, which is not limited here. This technical solution, by combining the rolling mechanism 810, the rotation drive 820, and the slidably connected guiding mechanism 830, realizes the sliding and rotating functions of the guiding device 800 on the base 100. The sliding adjustment of the guide mechanism 830 between the rolling mechanism 810 and the base 100 can meet the needs of different working conditions, while the rotation of the guide mechanism 830 can effectively drive the rolling mechanism 810 to rotate, providing a more flexible and precise operation.

[0039] Please see Figure 3In one embodiment, the guiding mechanism 830 includes a guide rod 831, a first meshing gear 832 and a second meshing gear 833 respectively connected to both ends of the guide rod 831. The first meshing gear 832 includes a first driving meshing gear 8321 and a first driven meshing gear 8322. The first driving meshing gear 8321 is fixedly sleeved on the output shaft of the rotation drive member 820, and the first driven meshing gear 8322 is fixedly connected to the base 100. The first driven meshing gear 8322 is slidably sleeved on one end of the guide rod 831. The guide rod 831 can slide along the axial direction of the first driven meshing gear 8322. The first driving meshing gear 8321 and the first driven meshing gear 8322 mesh and drive each other. The second meshing gear 833 includes a second driving meshing gear 8331 and a second driven meshing gear 8332. The second driving meshing gear 8331 is fixedly sleeved on the other end of the guide rod 831, and the second driven meshing gear 8332 is fixedly sleeved on the rolling mechanism 810. The second driving meshing gear 8331 and the second driven meshing gear 8332 mesh and drive each other. This technical solution, through the ingenious design of the guide mechanism 830, combines the transmission system of the guide rod 831 and the meshing gears, enabling the guide device 800 to achieve more flexible adjustment and control. The cooperation between the first meshing gear 832 and the rotation drive 820 ensures the sliding and rotational capabilities of the guide rod 831, while the second meshing gear 833, through its transmission with the rolling mechanism 810, provides precise control of the rolling mechanism 810. This structure allows the guide device 800 to work more smoothly during adjustment, while improving the reliability and efficiency of the system, adapting to different working conditions, and enhancing the adjustability and stability of the equipment.

[0040] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this application and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this application should be included within the protection scope of this application. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A visual imaging device for flue gas ducts in thermal power plants, characterized in that, include: A base and a cleaning device disposed on the base; The system includes a rotary drive, a phase measurement camera, and a protective housing fitted around the phase measurement camera. The rotary drive is mounted on the base, and its output shaft is fixedly connected to the phase measurement camera. The protective housing abuts against the cleaning device, causing the protective housing to rotate with the phase measurement camera under the drive of the rotary drive, so that dust on the periphery of the protective housing is dislodged by friction with the cleaning device.

2. The visual imaging device for flue gas ducts in thermal power plants according to claim 1, characterized in that, The cleaning device includes a telescopic drive component and a cleaning mechanism connected to the telescopic drive component. The telescopic drive component is disposed on the base, and the base has a telescopic hole. The cleaning mechanism slides and engages with the inner wall of the telescopic hole. The telescopic drive component can drive the cleaning mechanism to extend out of the telescopic hole so that the cleaning mechanism abuts against the periphery of the protective shell. The telescopic drive component can also drive the cleaning mechanism to retract into the telescopic hole.

3. The visual imaging device for flue gas ducts in thermal power plants according to claim 2, characterized in that, The cleaning mechanism includes a cleaning component, a sealing plate, and a connector. The connector is connected to the telescopic drive component. The cleaning component is sleeved on the connector. The sealing plate is fixed to the end of the connector facing away from the telescopic drive component. Both the cleaning component and the sealing plate slide against the inner wall of the telescopic hole. When the telescopic drive component extends, it can drive the connector to move the cleaning component and the sealing plate out of the telescopic hole, so that the cleaning component abuts against the periphery of the protective shell. When the telescopic drive component retracts, it can drive the connector to move the cleaning component and the sealing plate back into the telescopic hole, so that the sealing plate closes the telescopic hole.

4. The visual imaging device for flue gas ducts in thermal power plants according to claim 3, characterized in that, It also includes an actuator and a transmission component. The actuator is slidably sleeved on the connecting component, and the transmission component is fixedly sleeved on the output shaft of the rotary drive component. The transmission component meshes with the actuator for transmission, and the connecting component is rotatably connected to the telescopic drive component, so that the connecting component can rotate under the drive of the actuator or slide along the telescopic hole under the drive of the telescopic drive component.

5. The visual imaging device for flue gas ducts in thermal power plants according to claim 3, characterized in that, The base includes a support base and an installation compartment disposed on the support base. The rotary drive component is disposed on the support base, and the telescopic drive component is disposed on the support base. The installation compartment has a telescopic hole on the side facing the protective shell. The connector passes through and extends into the side of the installation compartment away from the protective shell and connects with the cleaning component and the sealing plate.

6. The visual imaging device for flue gas ducts in thermal power plants according to any one of claims 2 to 5, characterized in that, It also includes a detection unit and a control unit that are electrically connected to each other. The detection unit is electrically connected to the telescopic drive component and is used to detect the telescopic drive component's extension and retraction amount and output the extension and retraction amount information of the telescopic drive component. The control unit is electrically connected to both the telescopic drive component and the rotary drive component. The control unit is used to compare the received extension and retraction amount information with a preset extension and retraction amount threshold and control the extension and retraction of the telescopic drive component and the start and stop of the rotary drive component according to the comparison result.

7. The visual imaging device for flue gas ducts in thermal power plants according to claim 1, characterized in that, It also includes a guide device and a limiting device. The guide device is slidably connected to the base and extends away from the base in a direction perpendicular to the axis of the protective shell. The limiting device is fixedly connected to the base and abuts against the guide device, which can restrict the sliding of the guide device. When the limiting device moves away from the guide device, the guide device can slide in a direction perpendicular to the axis of the protective shell to adjust the distance between the end of the guide device away from the base and the base.

8. The visual imaging device for flue gas ducts in thermal power plants according to claim 7, characterized in that, The number of the guiding devices is at least four, and the at least four guiding devices are distributed at intervals along the periphery of the base. The number of the limiting devices corresponds one-to-one with the number of the guiding devices.

9. The visual imaging device for flue gas ducts in thermal power plants according to claim 7, characterized in that, The guiding device includes a rolling mechanism, a rotation drive member disposed on the base, and a guiding mechanism slidably connected to the base. One end of the guiding mechanism passes through the base and is driven by the rotation drive member, and the other end of the guiding mechanism is driven by the rolling mechanism. The guiding mechanism can slide along the base or rotate under the drive of the rotation drive member. The sliding of the guiding mechanism can adjust the distance between the rolling mechanism and the base, and the rotation of the guiding mechanism can drive the rolling mechanism to rotate.

10. The visual imaging device for flue gas ducts in thermal power plants according to claim 9, characterized in that, The guiding mechanism includes a guide rod, a first meshing gear and a second meshing gear respectively connected to both ends of the guide rod. The first meshing gear includes a first driving meshing gear and a first driven meshing gear. The first driving meshing gear is fixedly sleeved on the output shaft of the rotary drive component, and the first driven meshing gear is fixedly connected to the base. The first driven meshing gear is slidably sleeved on one end of the guide rod so that the guide rod can slide along the axial direction of the first driven meshing gear. The first driving meshing gear and the first driven meshing gear mesh and drive each other. The second meshing gear includes a second driving meshing gear and a second driven meshing gear. The second driving meshing gear is fixedly sleeved on the other end of the guide rod, and the second driven meshing gear is fixedly sleeved on the rolling mechanism. The second driving meshing gear and the second driven meshing gear mesh and drive each other.

Images