Exploration device for cleaning flue of power plant

Abstract

The invention relates to the technical field of power plant equipment detection, and discloses a power plant flue cleaning probing device which comprises a probing mechanism and a driving mechanism fixedly mounted on the probing mechanism, the probing mechanism comprises a connecting pipe, and a mounting ring body is fixedly mounted on the periphery of the connecting pipe; a mounting rod is fixedly mounted on the periphery of the mounting ring body, a probing assembly is fixedly mounted at one end of the mounting rod, when the corrugated pipe shrinks, gas in the corrugated pipe is sprayed out from the gas outlet pipe, dust on the inner wall of the smoke pipe can be conveniently blown away, a second conical barrel can bag the dust, and the dust can enter a connecting pipe through the second conical barrel; the probing assembly is located at the lower end of the device, after dust removal is conducted through the second conical barrel, a large part of dust is brought out of the outer side of the smoke pipe, the dust on the periphery of the probing assembly is reduced, and the accuracy of probing results is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of power plant equipment detection, in particular to a detection device for cleaning a flue in a power plant. Background Art

[0002] A power plant, also known as a power station, is a factory that converts various primary energy sources in nature into electrical energy. With the growth of electricity demand, people began to propose the idea of ​​establishing an electricity production center. With the development of motor manufacturing technology, the expansion of the application scope of electric energy, and the rapid growth of production demand for electricity, power plants came into being.

[0003] During daily operation of a power plant, burning a large amount of fuel will produce particulate dust. The dust is adsorbed on the inner wall of the flue, affecting people's understanding of the specific use of the flue, making it difficult to detect.

[0004] For example, a detection device for cleaning flue in a power plant with announcement number CN114484479A includes a transmission module, the transmission module includes a turbine assembly, an air intake assembly and a transmission assembly, the turbine assembly is movably connected to the air intake assembly, the transmission assembly is movably connected to the turbine assembly; and a cleaning module, the cleaning module includes a cleaning assembly and a limit assembly, the limit assembly is arranged on the surface of the cleaning assembly, and the cleaning module is movably connected to the transmission module. This invention uses the detection module to enable the cleaning equipment to collect information on the flue exposed after cleaning when cleaning the flue, so as to facilitate the staff to confirm the status of the flue and ensure the safety of the flue. The transmission module drives the equipment to rise as a whole, and the cleaning module cleans the flue, so as to facilitate the final information collection of the detection module.

[0005] The interior of a traditional power plant flue is relatively narrow and long, and it is difficult to conduct exploration of deep flues, especially flues with a lot of dust on the inner walls. When the device moves through it, not only is the line of sight blocked, but it will also bring up more dust. If the dust covers the exploration instrument, it will greatly affect the accuracy of the exploration instrument's exploration data and affect the use of the device.

[0006] Therefore, we propose a detection device for power plant flue cleaning to solve the above-mentioned problems. Summary of the invention

[0007] The purpose of the present invention is to provide a detection device for cleaning power plant flue to solve the problem proposed in the above background technology that the interior of the traditional power plant flue is relatively narrow and long, and it is difficult to detect the deep flue. If dust covers the detection instrument, it will greatly affect the accuracy of the detection data of the detection instrument.

[0008] To achieve the above-mentioned object, the present invention provides the following technical solutions: a detection device for flue cleaning of a power plant, comprising a detection mechanism and a driving mechanism fixedly mounted on the detection mechanism, the detection mechanism comprising a connecting pipe, a mounting ring body fixedly mounted on the outer periphery of the connecting pipe, a mounting rod fixedly mounted on the outer periphery of the mounting ring body, and a detection assembly fixedly mounted on one end of the mounting rod; The detection mechanism is also provided with a moving mechanism, and the moving mechanism includes a first conical tube fixedly mounted on the outer periphery of the connecting tube, a bellows fixedly mounted on the upper end of the first conical tube, and an air inlet fixedly mounted on the lower end of the first conical tube; A dust removal mechanism is also provided on the detection mechanism, which includes a second conical cylinder slidably installed on the outer periphery of the connecting tube, an inner cavity is opened inside the second conical cylinder, a connecting hole is opened at the lower end of the inner cavity, and an air outlet pipe is fixedly installed at the upper end of the second conical cylinder, and the air outlet pipe is connected with the connecting hole.

[0009] Preferably, the driving mechanism includes a base plate fixedly mounted on the outer periphery of the connecting tube, a limiting plate fixedly mounted on the outer periphery of the base plate, a motor fixedly mounted on the upper end of the base plate, a half-tooth gear mounted on the upper end of the motor, a full-tooth gear meshingly mounted on one side of the half-tooth gear, a connecting column fixedly mounted on the upper end of the full-tooth gear, and a volute spring fixed on the outer periphery of the connecting column.

[0010] Preferably, a first fixing ring is fixedly installed on the outer periphery of the upper end of the first conical cylinder, a fixing sleeve is fixedly installed on the lower end of the first fixing ring, and the inner wall of the fixing sleeve is fixedly connected to one end of the volute spring.

[0011] Preferably, a second fixed ring is fixedly mounted on the outer circumference of the second conical cylinder, a second rotating ring is rotatably mounted on the outer circumference of the second conical cylinder, and the second fixed ring is rotatably mounted on the upper end of the second rotating ring.

[0012] Preferably, the detection mechanism is also provided with a rotating mechanism, which includes a first rotating ring rotatably mounted on the outer periphery of the first fixed ring, a limiting ring fixedly mounted on the upper end of the first rotating ring, the limiting ring being arranged at the upper end of the first fixed ring, a first arc-shaped notch being opened at the upper end of the limiting ring, an inner gear ring fixedly mounted on the inner wall of the first rotating ring, and the inner gear ring being meshingly connected with the full-tooth gear.

[0013] Preferably, a fixing mechanism is provided on one side of the rotating mechanism, and the fixing mechanism includes a first connecting rod rotatably mounted on the upper end of the first rotating ring, a rotating block is also fixedly mounted on one end of the first connecting rod, and one side of the first connecting rod is rotatably connected to a second connecting rod through the rotating block.

[0014] Preferably, two of the first connecting rod, two of the second connecting rod and two of the rotating blocks are provided, and a third connecting rod is commonly connected between the upper and lower rotating blocks.

[0015] Preferably, the fixing mechanism is provided with two groups, and the first connecting rod and the second connecting rod in the other group of the fixing mechanism are rotatably mounted on the second fixing ring and the second rotating ring respectively, and the second rotating ring is provided with a second arc-shaped slot that matches the first arc-shaped slot.

[0016] Preferably, a connecting mechanism is commonly provided between the upper and lower fixing mechanisms, and the connecting mechanism comprises a rotating rod rotatably mounted on the first fixing ring, the rotating rod is also interlaced and connected with the first arc-shaped slot, and a rotating sleeve is slidably mounted on the upper end of the rotating rod, the rotating sleeve is interlaced and connected with the second arc-shaped slot, and is rotatably connected with the fixing ring.

[0017] Preferably, a spiral groove is formed on the outer circumference of the rotating rod, a protrusion is rotatably mounted on the inner wall of the rotating sleeve, and the protrusion is slidably mounted in the spiral groove.

[0018] Compared with the prior art, the present invention has the following beneficial effects: 1. When the bellows contracts, the gas inside the bellows is ejected from the exhaust pipe, which makes it easy to blow away the dust on the inner wall of the smoke pipe. The second cone can hold the dust, and the dust can enter the connecting pipe through the second cone and be discharged to the outside of the flue. The detection component is located at the lower end of the device. After the dust removal by the second cone, most of the dust is taken out of the outside of the smoke pipe, reducing the dust on the periphery of the detection component and ensuring the accuracy of the detection result. When the bellows is unfolded, the gas enters the bellows from the air inlet at the lower end of the device. The gas entering the bellows is relatively clean. When the bellows is unfolded for the second time, the inner wall of the smoke pipe can be flushed again. This is repeated, which can not only ensure the accuracy of the detection result of the detection component, but also clean up the dust in the smoke pipe, and the use effect is good.

[0019] 2. After the motor is turned on, multiple second connecting rods are simultaneously unfolded, which can increase the diameter of the device and facilitate contact with the inner wall of the flue to fix the device. With the cooperation of the half-tooth gear, the full-tooth gear, the spiral spring, the inner gear ring, and the first rotating ring, the first rotating ring will immediately reverse and reset after rotating a certain angle. Therefore, the second connecting rod will also rebound and reset after contacting the inner wall of the flue. After the second connecting rod does not contact the inner wall of the flue, it can push the first rotating ring forward, which is convenient for large-scale exploration.

[0020] 3. After the motor is turned on, with the cooperation of the half-tooth gear, the full-tooth gear, the connecting column, the scroll spring, the inner gear ring and the first rotating ring, the first rotating ring and the second connecting rod at the lower end will immediately reverse and reset after rotating to a certain angle, and the second connecting rod at the upper end will perform the opposite operation. Therefore, no matter when, the device has a supporting point and supports the inner wall of the flue, which is convenient for non-fixed exploration of the device in the flue and is not easy to fall.

[0021] 4. During the rotation of the rotating rod, the rotating sleeve also rotates in the spiral groove through the protrusion, that is, the rotating sleeve moves linearly on the rotating rod, shortening the distance between the first conical cylinder and the second conical cylinder, that is, the bellows can be contracted. Since the full-tooth gear, the connecting column, and the rotating rod will reverse after rotating to a certain extent, the bellows can be extended and retracted, thereby realizing ventilation and dust removal of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 It is an overall cross-sectional view of the present invention; Figure 3 It is a cross-sectional view of the detection mechanism, the moving mechanism, and the dust removal mechanism of the present invention; Figure 4 It is a schematic diagram of the driving mechanism structure of the present invention; Figure 5 It is a cross-sectional view of the driving mechanism and the rotating mechanism of the present invention; Figure 6 It is a schematic diagram of the structure of the rotating mechanism, the fixing mechanism and the connecting mechanism of the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the fixing mechanism and the connecting mechanism of the present invention; Figure 8 For the present invention Figure 2 Enlarged view of point A in the middle.

[0023] In the figure: 1. detection mechanism; 11. connecting pipe; 12. mounting ring; 13. mounting rod; 14. detection assembly; 2. driving mechanism; 21. bottom plate; 22. stop plate; 23. motor; 24. half-toothed gear; 25. full-toothed gear; 26. connecting column; 27. scroll spring; 3. moving mechanism; 31. first conical cylinder; 32. first fixing ring; 33. fixing sleeve; 34. bellows; 35. air inlet; 4. dust removal mechanism; 41. second conical cylinder; 42 , inner cavity; 43, connecting hole; 44, air outlet pipe; 45, second fixed ring; 46, second rotating ring; 47, second arc-shaped notch; 5, rotating mechanism; 51, first rotating ring; 52, limiting ring; 53, first arc-shaped notch; 54, inner gear ring; 6, fixing mechanism; 61, first connecting rod; 62, rotating block; 63, second connecting rod; 64, third connecting rod; 7, connecting mechanism; 71, rotating rod; 72, rotating sleeve; 73, spiral groove; 74, protrusion. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] Example 1: Please refer to Figure 1-Figure 4 A detection device for flue cleaning of a power plant comprises a detection mechanism 1 and a driving mechanism 2 fixedly mounted on the detection mechanism 1. The detection mechanism 1 comprises a connecting pipe 11. The connecting pipe 11 is relatively long, one end of which penetrates into the flue and the other end is placed outside the flue. A mounting ring 12 is fixedly mounted on the periphery of the connecting pipe 11. A mounting rod 13 is fixedly mounted on the periphery of the mounting ring 12. At least two groups of mounting rods 13 are provided. A detection component 14 is fixedly mounted on one end of the mounting rod 13. The detection component 14 comprises any instrument that can detect in the flue, such as a camera, a light, and an ultrasonic instrument, and is used for flue detection and inspection.

[0026] The detection mechanism 1 is also provided with a moving mechanism 3, which includes a first conical tube 31 fixedly mounted on the outer periphery of the connecting tube 11, a bellows 34 fixedly mounted on the upper end of the first conical tube 31, an air inlet 35 fixedly mounted on the lower end of the first conical tube 31, and the bellows 34 is retractable.

[0027] A dust removal mechanism 4 is also provided on the detection mechanism 1, and the dust removal mechanism 4 includes a second conical cylinder 41 slidably installed on the outer periphery of the connecting tube 11, the middle part of the second conical cylinder 41 is connected with the connecting tube 11, an inner cavity 42 is provided inside the second conical cylinder 41, a connecting hole 43 is provided at the lower end of the inner cavity 42, an air outlet pipe 44 is fixedly installed at the upper end of the second conical cylinder 41, and the air outlet pipe 44 is connected with the connecting hole 43, the air inlet 35 is located at the lower end of the device, and the air outlet pipe 44 is located at the upper end of the device, and a one-way valve is installed on the air inlet 35 and the air outlet pipe 44, wherein the air outlet pipe 44 only flows out but not in, and the air inlet 35 only flows in but not out.

[0028] The bellows 34 is connected between the first conical tube 31 and the second conical tube 41. When the bellows 34 contracts, the gas inside the bellows 34 is ejected from the exhaust pipe 44. The exhaust pipe 44 is located at the front end of the device operation, which is convenient for blowing away the dust on the inner wall of the smoke pipe. The upper diameter of the second conical tube 41 is larger than the lower diameter. As the device runs, the second conical tube 41 can hold the dust. The dust can enter the connecting pipe 11 through the second conical tube 41 and be discharged to the outside of the flue. The detection component 14 is located at the lower end of the device. After dust removal by the second conical tube 41, most of the dust is taken out of the smoke pipe, reducing the dust around the detection component 14 and ensuring the accuracy of the detection result.

[0029] When the bellows 34 is unfolded, gas enters the bellows 34 from the air inlet 35 at the lower end of the device. Since most of the dust has been taken away by the second conical tube 41, the air at the lower end of the device contains less dust, that is, the gas entering the bellows 34 is relatively clean. When the bellows 34 is unfolded for the second time, the inner wall of the flue can be flushed again. This process is repeated, which not only ensures the accuracy of the detection results of the detection component 14, but also cleans up the dust in the flue, resulting in a good use effect.

[0030] Example 2: Please refer to Figure 1-Figure 6 The driving mechanism 2 includes a bottom plate 21 fixedly mounted on the outer periphery of the connecting tube 11, a limit plate 22 fixedly mounted on the outer periphery of the bottom plate 21, a motor 23 fixedly mounted on the upper end of the bottom plate 21, a half-toothed gear 24 mounted on the upper end of the motor 23, a full-toothed gear 25 meshingly mounted on one side of the half-toothed gear 24, the half-toothed gear 24 is only provided with half a circle of teeth, and the full-toothed gear 25 is an ordinary gear, a connecting column 26 fixedly mounted on the upper end of the full-toothed gear 25, a volute spring 27 fixed on the outer periphery of the connecting column 26, the motor 23 is the only driving component of the device, fixedly mounted on the bottom plate 21, and a limit plate 22 is also fixedly mounted on its outer periphery, which has a certain degree of protection.

[0031] A first fixing ring 32 is fixedly mounted on the outer periphery of the upper end of the first conical tube 31 , a fixing sleeve 33 is fixedly mounted on the lower end of the first fixing ring 32 , and an inner wall of the fixing sleeve 33 is fixedly connected to one end of the spiral spring 27 .

[0032] When the device is in use, the operator first places the device inside the flue, and then turns on the motor 23, and the half-tooth gear 24 rotates. When the toothed end of the half-tooth gear 24 rotates to engage with the full-tooth gear 25, the full-tooth gear 25 rotates and the scroll spring 27 adaptively expands and contracts. When the toothless end of the half-tooth gear 24 rotates to one side of the full-tooth gear 25, the full-tooth gear 25 and the scroll spring 27 lose their restraints, rotate in the opposite direction and reset. Therefore, after the motor 23 is turned on, the full-tooth gear 25 continuously rotates forward and reversely.

[0033] A rotating mechanism 5 is also provided on the detection mechanism 1, and the rotating mechanism 5 includes a first rotating ring 51 rotatably installed on the outer periphery of the first fixed ring 32, a limiting ring 52 is fixedly installed on the upper end of the first rotating ring 51, and the limiting ring 52 is arranged on the upper end of the first fixed ring 32. An inner gear ring 54 is fixedly installed on the inner wall of the first rotating ring 51, and the inner gear ring 54 is meshed and connected with the full-tooth gear 25.

[0034] After the motor 23 is turned on, the full-tooth gear 25 continuously rotates forward and reverse repeatedly, and the inner gear ring 54, the first rotating ring 51, and the limit ring 52 meshing with the full-tooth gear 25 synchronously rotate back and forth to drive the device.

[0035] The motor 23, the half-toothed gear 24, the full-toothed gear 25, the connecting column 26 and the scroll spring 27 are arranged on the outer periphery of the first conical cylinder 31 and also on the inner shaft of the first rotating ring 51. The space in which they are located is relatively sealed, has a certain degree of protection, and also reduces interference from dust.

[0036] Example 3: Please refer to Figure 1-Figure 7 A fixing mechanism 6 is provided on one side of the rotating mechanism 5, and the fixing mechanism 6 includes a first connecting rod 61 rotatably mounted on the upper end of the first rotating ring 51, and a rotating block 62 is also fixedly mounted on one end of the first connecting rod 61, and one side of the first connecting rod 61 is rotatably connected to a second connecting rod 63 through the rotating block 62.

[0037] A first arc-shaped slot 53 is provided at the upper end of the limiting ring 52, and a connecting mechanism 7 is commonly provided between the upper and lower fixing mechanisms 6. The connecting mechanism 7 includes a rotating rod 71 rotatably mounted on the first fixing ring 32, and the rotating rod 71 is also interlaced and connected with the first arc-shaped slot 53. The second connecting rod 63 is rotatably connected with the first fixing ring 32 through the rotating rod 71. The first connecting rod 61 and the second connecting rod 63 are rotatably connected with the first rotating ring 51 and the first fixing ring 32 respectively.

[0038] After the motor 23 is turned on, the full-tooth gear 25 rotates, and the inner gear ring 54 and the first rotating ring 51 meshing with the full-tooth gear 25 rotate synchronously. The first connecting rod 61 and the second connecting rod 63 can be extended. Multiple first connecting rods 61 and second connecting rods 63 are arranged on the outside of the first rotating ring 51. Multiple second connecting rods 63 are unfolded synchronously, which can increase the diameter of the device and facilitate contact with the inner wall of the flue to fix the device.

[0039] There are two first connecting rods 61, two second connecting rods 63 and two rotating blocks 62, and a third connecting rod 64 is commonly connected between the upper and lower rotating blocks 62. A plurality of first connecting rods 61 are provided to increase the stability of the device in terms of resistance and fixation.

[0040] After the motor 23 is turned on, with the cooperation of the half-tooth gear 24, the full-tooth gear 25, the spiral spring 27, the inner gear ring 54, and the first rotating ring 51, the first rotating ring 51 will immediately reverse and reset after rotating a certain angle. Therefore, the second connecting rod 63 will also rebound and reset after contacting the inner wall of the flue. After the second connecting rod 63 no longer contacts the inner wall of the flue, it can push the first rotating ring 51 forward, which is convenient for large-scale exploration.

[0041] Example 4: Please refer to Figure 2-Figure 8 The fixing mechanism 6 is provided with two groups. The first connecting rod 61 and the second connecting rod 63 in the other group of fixing mechanisms 6 are rotatably mounted on the second fixing ring 45 and the second rotating ring 46 respectively. The second rotating ring 46 is provided with a second arcuate notch 47 adapted to the first arcuate notch 53.

[0042] A second fixed ring 45 is fixedly mounted on the outer circumference of the second conical tube 41 . A second rotating ring 46 is rotatably mounted on the outer circumference of the second conical tube 41 . The second fixed ring 45 is rotatably mounted on the upper end of the second rotating ring 46 .

[0043] A rotating sleeve 72 is slidably installed on the upper end of the rotating rod 71. The rotating sleeve 72 is inserted and connected with the second arc-shaped groove 47 and is rotatably connected with the second fixing ring 45. One end of the second connecting rod 63 of the upper end fixing mechanism 6 is fixedly connected to the rotating sleeve 72. The distribution direction of the first connecting rod 61 and the second connecting rod 63 at the upper end is opposite to the distribution direction of the first connecting rod 61 and the second connecting rod 63 at the lower end.

[0044] The rotating rod 71 is fixedly connected to the connecting column 26. During the rotation of the connecting column 26, the rotating rod 71 rotates, and the rotating sleeve 72 rotates. Therefore, when the second connecting rod 63 at the lower end is expanded, the second connecting rod 63 at the upper end is in a retracted state. After the motor 23 is turned on, with the cooperation of the half-tooth gear 24, the full-tooth gear 25, the connecting column 26, the volute spring 27, the inner gear ring 54, and the first rotating ring 51, the first rotating ring 51 and the second connecting rod 63 at the lower end will immediately reverse and reset after rotating a certain angle, and the second connecting rod 63 at the upper end will perform the opposite operation. Therefore, no matter when, the device has a support point and is supported by the inner wall of the flue, which is convenient for non-fixed exploration of the device in the flue and is not easy to fall.

[0045] A spiral groove 73 is provided on the outer periphery of the rotating rod 71, and a protrusion 74 is rotatably installed on the inner wall of the rotating sleeve 72. The protrusion 74 is slidably installed in the spiral groove 73. During the rotation of the rotating rod 71, the rotating sleeve 72 also rotates in the spiral groove 73 through the protrusion 74, that is, the rotating sleeve 72 moves linearly on the rotating rod 71, shortening the distance between the first conical cylinder 31 and the second conical cylinder 41, that is, the bellows 34 can be contracted. Since the full-tooth gear 25, the connecting column 26, and the rotating rod 71 will reverse after rotating to a certain extent, the bellows 34 can be extended and retracted, thereby realizing ventilation and dust removal of the device.

[0046] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0047] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A detection device for flue cleaning of a power plant, comprising a detection mechanism (1) and a driving mechanism (2) fixedly mounted on the detection mechanism (1), characterized in that: The detection mechanism (1) comprises a connecting tube (11), a mounting ring (12) is fixedly mounted on the outer circumference of the connecting tube (11), a mounting rod (13) is fixedly mounted on the outer circumference of the mounting ring (12), and a detection assembly (14) is fixedly mounted on one end of the mounting rod (13); The detection mechanism (1) is also provided with a moving mechanism (3), the moving mechanism (3) comprising a first conical tube (31) fixedly mounted on the outer periphery of the connecting tube (11), a bellows (34) fixedly mounted on the upper end of the first conical tube (31), and an air inlet (35) fixedly mounted on the lower end of the first conical tube (31); The detection mechanism (1) is also provided with a dust removal mechanism (4), the dust removal mechanism (4) comprising a second conical cylinder (41) slidably mounted on the outer periphery of the connecting tube (11), an inner cavity (42) being provided inside the second conical cylinder (41), a connecting hole (43) being provided at the lower end of the inner cavity (42), an air outlet pipe (44) being fixedly mounted at the upper end of the second conical cylinder (41), the air outlet pipe (44) being connected to the connecting hole (43).

2. A detection device for flue cleaning of a power plant according to claim 1, characterized in that: The driving mechanism (2) comprises a bottom plate (21) fixedly mounted on the outer periphery of the connecting tube (11), a limit plate (22) fixedly mounted on the outer periphery of the bottom plate (21), a motor (23) fixedly mounted on the upper end of the bottom plate (21), a half-tooth gear (24) mounted on the upper end of the motor (23), a full-tooth gear (25) meshingly mounted on one side of the half-tooth gear (24), a connecting column (26) fixedly mounted on the upper end of the full-tooth gear (25), and a volute spring (27) fixedly mounted on the outer periphery of the connecting column (26).

3. A detection device for flue cleaning of a power plant according to claim 2, characterized in that: A first fixing ring (32) is fixedly mounted on the outer periphery of the upper end of the first conical cylinder (31), a fixing sleeve (33) is fixedly mounted on the lower end of the first fixing ring (32), and an inner wall of the fixing sleeve (33) is fixedly connected to one end of the spiral spring (27).

4. A detection device for power plant flue cleaning according to claim 3, characterized in that: A second fixed ring (45) is fixedly mounted on the outer circumference of the second conical cylinder (41), a second rotating ring (46) is rotatably mounted on the outer circumference of the second conical cylinder (41), and the second fixed ring (45) is rotatably mounted on the upper end of the second rotating ring (46).

5. A detection device for flue cleaning of a power plant according to claim 4, characterized in that: The detection mechanism (1) is also provided with a rotating mechanism (5), the rotating mechanism (5) comprising a first rotating ring (51) rotatably mounted on the outer periphery of the first fixed ring (32), a limiting ring (52) fixedly mounted on the upper end of the first rotating ring (51), the limiting ring (52) being arranged at the upper end of the first fixed ring (32), a first arc-shaped notch (53) being provided at the upper end of the limiting ring (52), an inner gear ring (54) fixedly mounted on the inner wall of the first rotating ring (51), the inner gear ring (54) being meshingly connected with the full-tooth gear (25).

6. A detection device for flue cleaning of a power plant according to claim 5, characterized in that: A fixing mechanism (6) is provided on one side of the rotating mechanism (5), and the fixing mechanism (6) comprises a first connecting rod (61) rotatably mounted on the upper end of the first rotating ring (51), a rotating block (62) is fixedly mounted on one end of the first connecting rod (61), and one side of the first connecting rod (61) is rotatably connected to a second connecting rod (63) via the rotating block (62).

7. A detection device for flue cleaning of a power plant according to claim 6, characterized in that: The first connecting rod (61), the second connecting rod (63) and the rotating block (62) are each provided with two, and a third connecting rod (64) is commonly connected between the upper and lower rotating blocks (62).

8. The detection device for flue cleaning of a power plant according to claim 7, characterized in that: The fixing mechanism (6) is provided in two groups. The first connecting rod (61) and the second connecting rod (63) in the other group of the fixing mechanism (6) are rotatably mounted on the second fixing ring (45) and the second rotating ring (46) respectively. The second rotating ring (46) is provided with a second arc-shaped notch (47) adapted to the first arc-shaped notch (53).

9. A detection device for flue cleaning of a power plant according to claim 8, characterized in that: A connecting mechanism (7) is commonly provided between the upper and lower fixing mechanisms (6), and the connecting mechanism (7) comprises a rotating rod (71) rotatably mounted on the first fixing ring (32), the rotating rod (71) being fixedly connected to the connecting column (26), the rotating rod (71) being also connected through the first arc-shaped notch (53), the second connecting rod (63) being rotatably connected to the rotating rod (71), a rotating sleeve (72) being slidably mounted on the upper end of the rotating rod (71), the rotating sleeve (72) being connected through the second arc-shaped notch (47), and being rotatably connected to the second fixing ring (45).

10. A detection device for flue cleaning of a power plant according to claim 9, characterized in that: A spiral groove (73) is formed on the outer circumference of the rotating rod (71), a convex block (74) is rotatably mounted on the inner wall of the rotating sleeve (72), and the convex block (74) is slidably mounted in the spiral groove (73).

Images