Boiler inner wall detection device

Abstract

The invention relates to the technical field of boiler production, in particular to a boiler inner wall detection device which comprises a base used for bearing a boiler shell, and the top of the base is fixedly connected with a fixing ring through a support. According to the boiler inner wall detection device, attraction force is applied to magnetic powder through a magnet on an outer ring, so that the magnetic powder permeates along a non-through crack existing in the inner wall, when an inner ring moves downwards and the crack is aligned with a sealing plate, the magnetic powder in the crack is adsorbed on the sealing plate to cause vibration, and a telescopic marking electric push rod is started after monitoring by a vibration sensor; the corresponding position of the boiler shell is marked, compared with photographing detection of the inner wall of the boiler, the magnetic powder can permeate into a crack difficult to observe through magnetic force induction of the magnet and the magnetic powder, on one hand, better accuracy is achieved compared with photographing observation, and limitation and interference caused by artificial factors are not likely to happen; on the other hand, the crack condition is detected and marked in real time in the detection process, step-by-step operation is not needed, and the detection efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of boiler production, and particularly to a detection device for the inner wall of a boiler. Background Art

[0002] Boiler pressure vessels are the full names of boilers and pressure vessels. Since they both belong to special equipment, they play an important role in production and life. A boiler is a mechanical device that uses the heat energy of fuel or other energy sources to heat water into hot water or steam. The original meaning of "pot" refers to a water container heated over fire, and "furnace" refers to a place where fuel is burned. A boiler includes two main parts: the pot and the furnace.

[0003] The existing patent (publication number: CN117589794A) discloses a detection device and method for cracks on the inner surface of a new material boiler pressure vessel. The detection device includes a base, and a first vertical plate and a second vertical plate are respectively fixedly installed on the top of the base. A support ring is rotatably connected to one side of the first vertical plate, and a boiler shell is clamped on the open side of the support ring. The invention drives the boiler shell to rotate by starting a driving motor, so as to comprehensively photograph and detect the inner wall of the boiler shell by using a plurality of cameras, and after detecting a crack by photographing, the crack area can be marked by scribing. The above detection equipment mainly relies on photographing for detection, the detection result is affected by the imaging effect, has great limitations, and it is difficult to distinguish whether the crack penetrates the boiler shell.

[0004] In view of this, we propose a detection device for the inner wall of a boiler. Summary of the Invention

[0005] The purpose of the present invention is to provide a detection device for the inner wall of a boiler, so as to solve the problems mentioned in the above background art that the existing detection equipment mainly relies on photographing for detection, the detection result is affected by the imaging effect, has great limitations, and it is difficult to distinguish whether the crack penetrates the boiler shell. To achieve the above purpose, the present invention provides the following technical solution: A detection device for the inner wall of a boiler, including a base for carrying a boiler shell, a fixed ring is fixedly connected to the top of the base through a bracket, and a rotating ring is rotatably connected to the inner circle of the fixed ring. Two groups of push rods are slidably arranged on the surface of the rotating ring, and the two groups of push rods respectively correspond to the inner circle and the outer circle of the boiler shell. Detectors are arranged at the bottom ends of the two groups of push rods.

[0006] The detector includes an inner ring fixedly arranged at the bottom end of the inner circle push rod and an outer ring arranged at the bottom end of the outer circle push rod. Rubber sealing edges are fixedly arranged on the upper and lower edges of the outer circle of the inner ring. A plurality of rubber scraping blades are fixedly arranged between the two rubber sealing edges, and the rubber scraping blades divide the outer circle of the inner ring into several detection areas.

[0007] A plurality of grooves corresponding to the detection areas are annularly formed on the outer side wall of the outer ring of the inner ring, and magnetic powder is filled in the grooves. A plurality of magnets corresponding to the grooves are arranged on the inner ring of the outer ring.

[0008] A chute penetrating the inner ring is formed on the inner top wall of the groove, and a sealing plate is slidably connected in the chute. A rubber block matching the inner wall of the boiler shell is fixedly arranged on the top of the sealing plate, and a vibration sensor is fixedly installed on the surface of the sealing plate. A telescopic marking electric push rod electrically connected to the vibration sensor is fixedly installed in the detection area.

[0009] A penetrating detection component is arranged on the outer ring.

[0010] Preferably, the penetrating detection component includes a plurality of notches formed in the inner ring of the outer ring, and the positions of the notches correspond to the detection areas. The magnets are arranged in the notches, and a partition cloth is arranged in the notches. The partition cloth is located between the magnet and the boiler shell.

[0011] Two sets of embedding grooves are formed in the inner ring of the outer ring, and the two embedding grooves are symmetrically distributed along the upper and lower sides of the notch. A color marking slider is slidably connected in the embedding groove, and a tension spring is arranged in the embedding groove. The tension spring pulls the color marking slider to move towards the inside of the embedding groove.

[0012] A through groove is formed on one side of the surface of the color marking slider opposite to the partition cloth, and tension belts are fixedly arranged on the upper and lower sides of the surface of the partition cloth. The two tension belts penetrate through the notch and extend to the same-side embedding groove and through groove respectively, and a cross bar is fixedly connected to the end of the tension belt. Oblique grooves matching the ends of the cross bar are formed on the two side walls of the through groove.

[0013] A guiding component is arranged in the outer ring and the notch.

[0014] Preferably, the guiding component includes a circular groove formed in the outer ring, and the circular groove communicates with the inner ring of the outer ring. A rubber wheel is rotatably connected in the circular groove, and a part of the wheel body of the rubber wheel extends to the inner ring of the outer ring to contact the boiler shell.

[0015] An inner groove is formed in the outer ring, and the inner groove communicates the circular groove with the notch. A U-shaped fork is rotatably connected in the inner groove, and a reed for pushing the U-shaped fork to deflect is arranged in the inner groove.

[0016] A convex column for pushing the U-shaped fork to deflect is fixedly arranged on the wheel disc of the rubber wheel. The magnet is slidably connected in the notch, and a clamping shaft is fixedly arranged on the surface of the magnet. The fork is sleeved on the clamping shaft.

[0017] Preferably, arc-shaped pipes are fixedly arranged on both lateral sides of the notch, and powder discharge holes corresponding to the arc-shaped pipes are formed at the bottom of the notch.

[0018] Preferably, the bottom of the outer ring is threadedly connected with a powder bottle corresponding to the powder discharge hole.

[0019] Preferably, the surface of the rubber wheel is provided with anti-slip grooves.

[0020] Preferably, the inner ring of the outer ring is provided with a powder injection hole connected to the groove.

[0021] Preferably, the color-marking slider consists of a block and a color-marking pad with pigment, and the color-marking pad is fixed to the surface of the shell by screws.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] In the present invention, the magnet on the outer ring exerts suction on the magnetic powder, so that the magnetic powder penetrates along the non-through cracks on the inner wall. When the inner ring moves downward and the crack is aligned with the sealing plate, the magnetic powder in the crack is adsorbed on the sealing plate to cause vibration, which is detected by the vibration sensor and then the telescopic marking electric push rod is started to mark the corresponding position of the boiler shell. Compared with photographic inspection of the inner wall of the boiler, the magnetic induction of the magnet and the magnetic powder can penetrate the magnetic powder into the cracks that are difficult to observe. On the one hand, it has better accuracy than photographic observation and is not easily restricted or interfered by artificial factors. On the other hand, the crack situation can be detected and marked in real time during the detection process without the need for step-by-step inspection, thereby improving the detection efficiency.

[0024] In the present invention, for through cracks, magnetic powder penetrates into the cracks under the action of magnetic force and passes through, and is constrained on the partition cloth by magnetic attraction, so that the suction force applied to the magnetic powder acts on the partition cloth, pulling it to deform in the direction of the magnet. At this time, the partition cloth uses the pull belt to drive the cross bar to move in the direction of the notch, and the cross bar pushes the color-marked slider along the inclined groove to move outside the embedded groove, marking the outer wall of the partition boiler shell at the current position. Compared with photographic imaging, the above-mentioned magnetic powder penetration detection can utilize the permeability of the through cracks to cooperate with the partition cloth to achieve external marking, and the marking process is automatically carried out. Combined with the internal marking, the user can intuitively understand the penetration status of the cracks through the difference between the inside and outside of the marking point, which is convenient for researchers to study and judge the production process.

[0025] In the present invention, the friction force of the boiler shell is used to push the rubber wheel to rotate. During this process, the convex column that follows the rubber wheel to perform circular motion moves the shift fork to compress the spring sheet and then deflect. After the convex column leaves, the spring sheet is used to push the shift fork to rotate, and the shift fork is used to push the magnet along the clamping axis to move back and forth in the gap. The corresponding traction magnetic powder moves synchronously, so as to control the magnetic powder on the inner wall of the boiler shell to better penetrate into the crack, and the magnetic powder that penetrates into the crack can pass the bending position through reciprocating change of direction, so as to avoid the magnetic powder being stuck inside the through crack to cause misjudgment, thereby improving the detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1Schematic diagram of the three-dimensional structure of the present invention and the boiler housing;

[0027] Figure 2 Schematic diagram of the three-dimensional structure of the present invention;

[0028] Figure 3 Schematic diagram of the structure of the push rod, outer ring and inner ring of the present invention;

[0029] Figure 4 Explosion diagram of the outer ring and inner ring of the present invention;

[0030] Figure 5 Three-dimensional structural section of the outer ring and inner ring of the present invention Figure 1 ;

[0031] Figure 6 Three-dimensional structural section of the outer ring and inner ring of the present invention Figure 2 ;

[0032] Figure 7 Schematic diagram of the structure of the chute and the groove of the present invention;

[0033] Figure 8 Explosion of the notch, partition cloth and magnet of the present invention Figure 1 ;

[0034] Figure 9 Explosion of the notch, partition cloth and magnet of the present invention Figure 2 ;

[0035] Figure 10 Schematic diagram of the structure of the inclined chute and the cross bar of the present invention.

[0036] In the figure: 1. Base; 2. Fixed ring; 3. Rotating ring; 4. Push rod; 5. Detector; 51. Inner ring; 52. Outer ring; 53. Rubber sealing edge; 54. Rubber scraping blade; 55. Detection area; 56. Groove; 57. Magnet; 58. Chute; 59. Sealing plate; 510. Rubber block; 511. Vibration sensor; 512. Telescopic marking electric push rod; 513. Detection component; 5131. Notch; 5132. Partition cloth; 5133. Embedded groove; 5134. Color-coded slider; 5135. Tension spring; 5136. Through groove; 5137. Pulling belt; 5138. Cross bar; 5139. Inclined chute; 51310. Guide component; 513101. Circular groove; 513102. Rubber wheel; 513103. Inner groove; 513104. Fork; 513105. Reed; 513106. Convex column; 513107. Clamping shaft. Detailed implementation manners

[0037] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0038] Please refer to Figures 1 to 10 , the present invention provides a technical solution: a boiler inner wall detection device, including a base 1 for carrying the boiler shell. The top of the base 1 is fixedly connected with a fixed ring 2 through a bracket, and the inner ring of the fixed ring 2 is rotatably connected with a rotating ring 3. Two groups of push rods 4 are slidably arranged on the surface of the rotating ring 3, and the two groups of push rods 4 respectively correspond to the inner and outer circles of the boiler shell. Detectors 5 are arranged at the bottom ends of the two groups of push rods 4. During detection, the boiler shell is placed on the base 1, and then a cylinder-like machine is used to drive the outer ring 52 and the inner ring 51 to move down along the outer surface and the inner surface of the boiler shell respectively along the push rods 4, and at the same time, a motor-like machine is used to drive the rotating ring 3 and the outer ring 52 and the inner ring 51 to rotate;

[0039] The detector 5 includes an inner ring 51 fixedly arranged at the bottom end of the inner push rod 4 and an outer ring 52 arranged at the bottom end of the outer push rod 4. Rubber sealing edges 53 are fixedly arranged on the upper and lower edges of the outer ring of the inner ring 51. A plurality of rubber scraping blades 54 are fixedly arranged between the two rubber sealing edges 53, and the rubber scraping blades 54 divide the outer ring of the inner ring 51 into several detection areas 55. The rubber sealing edges 53 and the rubber scraping blades 54 are both in contact with the inner wall of the boiler shell, which can effectively prevent the magnetic powder in the groove 56 from falling off;

[0040] A plurality of grooves 56 corresponding to the detection areas 55 are annularly formed on the outer side wall of the outer ring of the inner ring 51, and magnetic powder is filled in the grooves 56. A plurality of magnets 57 corresponding to the grooves 56 are arranged on the inner ring of the outer ring 52. The magnets 57 on the outer ring 52 apply a suction force to the magnetic powder, so that the magnetic powder penetrates along the non-through cracks existing on the inner wall;

[0041] A chute 58 penetrating the inner ring 51 is provided on the inner top wall of the groove 56, and a sealing plate 59 is slidably connected in the chute 58. A rubber block 510 matching the inner wall of the boiler housing is fixedly arranged on the top of the sealing plate 59, and a vibration sensor 511 is fixedly installed on the surface of the sealing plate 59. A telescopic marking electric push rod 512 electrically connected to the vibration sensor 511 is fixedly installed in the detection area 55. It is formed by setting a marking component on an electric telescopic rod, such as a paint pen, etc. When the inner ring 51 moves downward along the inner wall of the boiler housing, the friction force between the inner wall and the rubber block 510 pulls up the sealing plate 59, opening the groove 56 to make the magnetic powder contact the inner wall. When the inner ring 51 moves downward and the crack aligns with the sealing plate 59, the magnetic powder in the crack is adsorbed on the sealing plate 59 causing vibration, and after being detected by the vibration sensor 511, the telescopic marking electric push rod 512 is activated to mark at the corresponding position of the boiler housing;

[0042] A penetration detection assembly 513 is provided on the outer ring 52.

[0043] In this embodiment, as Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figures 5 to 10 shown, the penetration detection assembly 513 includes a plurality of notches 5131 opened in the inner ring of the outer ring 52, and the positions of the notches 5131 correspond to the detection area 55. Magnets 57 are arranged in the notches 5131, and a partition cloth 5132 is arranged in the notches 5131. The partition cloth 5132 is located between the magnet 57 and the boiler housing. For a penetrating crack, the magnetic powder penetrates through after infiltrating into the crack under the action of magnetic force and is magnetically adsorbed and constrained on the partition cloth 5132;

[0044] Two sets of embedding grooves 5133 are opened in the inner ring of the outer ring 52, and the two embedding grooves 5133 are symmetrically distributed along the upper and lower sides of the notch 5131. A color - marking slider 5134 is slidably connected inside the embedding groove 5133, and a tension spring 5135 is arranged inside the embedding groove 5133. The tension spring 5135 pulls the color - marking slider 5134 to move inward into the embedding groove 5133;

[0045] A through groove 5136 is provided on the surface of the color marking slider 5134 on one side opposite to the partition cloth 5132, and drawstrings 5137 are fixedly provided on the upper and lower sides of the surface of the partition cloth 5132. The drawstrings 5137 on both sides penetrate the notch 5131 and extend to the embedded groove 5133 and the through groove 5136 on the same side respectively, and the ends of the drawstrings 5137 are fixedly connected to the cross bar 5138, and the side walls on both sides of the through groove 5136 are provided with inclined grooves 5139 that match the ends of the cross bar 5138. After the magnetic attraction is constrained on the partition cloth 5132, the suction force applied to the magnetic powder acts on the partition cloth 5132, pulling it to deform in the direction of the magnet 57. At this time, the partition cloth 5132 uses the drawstring 5137 to drive the cross bar 5138 to move in the direction of the notch 5131, and the cross bar 5138 pushes the color marking slider 5134 to move outside the embedded groove 5133 along the inclined groove 5139.

[0046] A guide assembly 51310 is disposed in the outer ring 52 and the notch 5131 .

[0047] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 10 As shown, the guide assembly 51310 includes a circular groove 513101 opened inside the outer ring 52, and the circular groove 513101 is connected to the inner ring of the outer ring 52, and the inside of the circular groove 513101 is rotatably connected with a rubber wheel 513102, and a part of the wheel body of the rubber wheel 513102 extends to the inner ring of the outer ring 52 and contacts the boiler shell. The rotating outer ring 52 uses the friction force of the boiler shell to push the rubber wheel 513102 to rotate;

[0048] An inner groove 513103 is formed inside the outer ring 52, and the inner groove 513103 communicates with the circular groove 513101 and the notch 5131. A shift fork 513104 with a U-shaped structure is rotatably connected in the inner groove 513103, and a reed 513105 is provided in the inner groove 513103 to push the shift fork 513104 to deflect.

[0049] A convex column 513106 for pushing the fork 513104 to deflect is fixedly provided on the wheel disc of the rubber wheel 513102, the magnet 57 is slidably connected in the notch 5131, and a clamping shaft 513107 is fixedly provided on the surface of the magnet 57, the fork 513104 is sleeved and clamped on the clamping shaft 513107, the convex column 513106 that moves in a circle with the rubber wheel 513102 pushes the fork 513104 to compress the spring leaf 513105 and then deflect it, and after the convex column 513106 leaves, the spring leaf 513105 is used to push the fork 513104 to rotate, and the fork 513104 is pushed along the clamping shaft 513107 by the magnet 57 to move back and forth in the notch 51311.

[0050] In this embodiment, Figure 1 ,Figure 2 , Figure 3 , Figure 4 , Figures 5 to 10 As shown in Figure 2 , Figure 3 , Figure 4 , and Figures 5 to 10 , arc tubes are fixedly arranged on both lateral sides of the notch 5131, and powder discharge holes corresponding to the arc tubes are formed at the bottom of the notch 5131. During the process of the magnetic block reciprocatingly displacing to guide the magnetic powder in the crack of the boiler shell, the magnetic powder on the partition cloth 5132 is synchronously driven to move correspondingly and respectively fall into the arc tubes on both sides of the partition cloth 5132. When the magnetic block leaves, the magnetic powder in the tubes enters the powder discharge holes.

[0051] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 10 shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 , and Figures 5 to 10 , a powder bottle corresponding to the powder discharge hole is threadedly connected to the bottom of the outer ring 52. After the magnetic powder on the partition cloth 5132 is pushed into the powder discharge hole, it directly falls into the powder bottle, which is convenient for users to recycle the magnetic powder.

[0052] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 10 shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 , and Figures 5 to 10 , anti-slip patterns are formed on the surface of the rubber wheel 513102. When the outer ring 52 rotates along the boiler shell, the rubber wheel 513102 can be better driven by the boiler shell by using the anti-slip patterns.

[0053] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 10 shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 , and Figures 5 to 10 , a powder injection hole communicating with the groove 56 is formed in the inner ring of the outer ring 52. Users can supplement the magnetic powder into the groove 56 along the powder injection hole manually or through a hose to avoid the loss of magnetic powder and affect the detection effect.

[0054] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 10 shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 , and Figures 5 to 10 , the color-coded slider 5134 is composed of a block body and a color-coded pad with pigments, and the color-coded pad is fixed on the surface of the shell by screws. When the block body pushes the color-coded pad into contact with the boiler shell, the pigments are printed on its surface. After using for a period of time, the screws can be unscrewed to remove the color-coded pad for pigment supplementation.

[0055] Usage method and advantages of the present invention: When the inner wall detection device of this kind of boiler is working and in use, the working process is as follows:

[0056] S1. As Figure 1 , Figure 2 ,Figure 3 , Figure 4 , Figures 5 to 10 As shown, the boiler shell is placed on the base 1, and then the outer ring 52 and the inner ring 51 are driven along the outer surface and the outer surface of the boiler shell by the cylinder-type machinery along the push rod 4, and the rotating ring 3 and the outer ring 52 and the inner ring 51 are driven to rotate synchronously by the motor-type machinery;

[0057] S2. When the inner ring 51 moves down along the inner wall of the boiler shell, the friction between the inner wall and the rubber block 510 pulls up the sealing plate 59, opens the groove 56, and makes the magnetic powder contact with the inner wall. During this process, the magnet 57 on the outer ring 52 applies suction to the magnetic powder, so that the magnetic powder penetrates along the non-through cracks on the inner wall. When the inner ring 51 moves down, the cracks are aligned with the sealing plate 59, and the magnetic powder in the cracks is adsorbed on the sealing plate 59 to cause vibration, which is detected by the vibration sensor 511 and then the telescopic marking electric push rod 512 is started to mark the corresponding position of the boiler shell. It should be noted that the above-mentioned magnetic powder detection is suitable for boilers made of materials that do not interfere with magnetic force, such as copper boilers;

[0058] S3. For through cracks, the magnetic powder penetrates into the cracks under the action of magnetic force and passes through, and is magnetically restrained on the partition cloth 5132, so that the suction force applied to the magnetic powder acts on the partition cloth 5132, pulling it to deform in the direction of the magnet 57. At this time, the partition cloth 5132 drives the cross bar 5138 to move in the direction of the notch 5131 by the drawstring 5137, and the cross bar 5138 pushes the color-marking slider 5134 to move outside the embedded groove 5133 along the inclined groove 5139, marking the outer wall of the partition boiler shell at the current position;

[0059] S4. When the magnet 57 attracts magnetic powder to penetrate into the crack, the rotating outer ring 52 uses the friction force of the boiler shell to push the rubber wheel 513102 to rotate. During this process, the boss 513106 that follows the rubber wheel 513102 for circular motion moves the shift fork 513104 to compress the spring leaf 513105 and then deflect it. After the boss 513106 leaves, the spring leaf 513105 is used to push the shift fork 513104 to rotate, and the shift fork 513104 is used to push the magnet 57 to move back and forth in the notch 5131 along the clamping shaft 513107 through the shift fork 513104, and the corresponding traction magnetic powder moves synchronously.

[0060] The above shows and describes the basic principles, main features and advantages of the present invention. Technical personnel in this industry should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A boiler inner wall detection device, comprising a base (1) for supporting a boiler shell, characterized in that: The top of the base (1) is fixedly connected to a fixed ring (2) through a bracket, and the inner ring of the fixed ring (2) is rotatably connected to a rotating ring (3), and two groups of push rods (4) are slidably arranged on the surface of the rotating ring (3), and the two groups of push rods (4) correspond to the inner ring and the outer ring of the boiler shell respectively, and the bottom ends of the two groups of push rods (4) are provided with detectors (5); The detector (5) comprises an inner ring (51) fixedly arranged at the bottom end of the inner ring push rod (4) and an outer ring (52) arranged at the bottom end of the outer ring push rod (4), and the upper and lower edges of the outer ring of the inner ring (51) are fixedly arranged with rubber edge seals (53), and a plurality of rubber scrapers (54) are fixedly arranged between the two rubber edge seals (53), and the rubber scrapers (54) divide the outer ring of the inner ring (51) into a plurality of detection areas (55); The outer ring side wall of the inner ring (51) is provided with a plurality of grooves (56) corresponding to the detection area (55) in an annular shape, and the grooves (56) are filled with magnetic powder, and the inner ring of the outer ring (52) is provided with a plurality of magnets (57) corresponding to the grooves (56); The inner top wall of the groove (56) is provided with a slide groove (58) penetrating the inner ring (51), and a sealing plate (59) is slidably connected in the slide groove (58), a rubber block (510) matching the inner wall of the boiler shell is fixedly arranged on the top of the sealing plate (59), and a vibration sensor (511) is fixedly installed on the surface of the sealing plate (59), and a telescopic marking electric push rod (512) electrically connected to the vibration sensor (511) is fixedly installed in the detection area (55); A penetration detection component (513) is provided on the outer ring (52).

2. A boiler inner wall detection device according to claim 1, characterized in that: The penetration detection assembly (513) comprises a plurality of notches (5131) formed in the inner ring of the outer ring (52), and the positions of the notches (5131) correspond to the detection area (55). The magnet (57) is arranged in the notches (5131), and a spacer cloth (5132) is arranged in the notches (5131), and the spacer cloth (5132) is located between the magnet (57) and the boiler shell; The inner ring of the outer ring (52) is provided with two embedded grooves (5133) in a group, and the two embedded grooves (5133) are symmetrically distributed along the upper and lower sides of the notch (5131); a color-marking slider (5134) is slidably connected inside the embedded groove (5133), and a tension spring (5135) is arranged inside the embedded groove (5133); the tension spring (5135) pulls the color-marking slider (5134) to move inside the embedded groove (5133); A through groove (5136) is provided on the side of the surface of the color-coded slider (5134) opposite to the partition cloth (5132), and drawstrings (5137) are fixedly provided on the upper and lower sides of the surface of the partition cloth (5132), and the drawstrings (5137) on both sides pass through the notch (5131) and extend to the same-side embedded groove (5133) and the through groove (5136) respectively, and the ends of the drawstrings (5137) are fixedly connected to a cross bar (5138), and the side walls on both sides of the through groove (5136) are provided with oblique grooves (5139) that match the ends of the cross bar (5138); A guide assembly (51310) is disposed in the outer ring (52) and the notch (5131).

3. A boiler inner wall detection device according to claim 2, characterized in that: The guide assembly (51310) comprises a circular groove (513101) formed inside the outer ring (52), and the circular groove (513101) is connected to the inner ring of the outer ring (52), a rubber wheel (513102) is rotatably connected inside the circular groove (513101), and a part of the wheel body of the rubber wheel (513102) extends to the inner ring of the outer ring (52) to contact the boiler shell; An inner groove (513103) is provided inside the outer ring (52), and the inner groove (513103) is connected to the circular groove (513101) and the notch (5131), a shift fork (513104) of a U-shaped structure is rotatably connected in the inner groove (513103), and a reed (513105) is provided in the inner groove (513103) for pushing the shift fork (513104) to deflect; A protruding column (513106) for pushing the shift fork (513104) to deflect is fixedly arranged on the wheel disc of the rubber wheel (513102), the magnet (57) is slidably connected in the notch (5131), and a clamping shaft (513107) is fixedly arranged on the surface of the magnet (57), and the shift fork (513104) is clamped on the clamping shaft (513107).

4. A boiler inner wall detection device according to claim 3, characterized in that: Arc tubes are fixedly arranged on both lateral sides of the notch (5131), and powder discharge holes corresponding to the arc tubes are opened at the bottom of the notch (5131).

5. A boiler inner wall detection device according to claim 4, characterized in that: The bottom of the outer ring (52) is threadedly connected with a powder bottle corresponding to the powder discharge hole.

6. A boiler inner wall detection device according to claim 4, characterized in that: The surface of the rubber wheel (513102) is provided with anti-skid grooves.

7. A boiler inner wall detection device according to claim 1, characterized in that: The inner ring of the outer ring (52) is provided with a powder injection hole which is in communication with the groove (56).

8. A boiler inner wall detection device according to claim 2, characterized in that: The color-marking slider (5134) is composed of a block and a color-marking pad with pigment, and the color-marking pad is fixed to the surface of the shell by screws.

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