Device for measuring thickness of coating on inner wall of reaction kettle

Abstract

The invention discloses a reaction kettle inner wall coating thickness measuring device, and relates to the technical field of reaction kettle equipment detection.The reaction kettle inner wall coating thickness measuring device comprises a reaction kettle body, a positioning assembly is installed at the top of the reaction kettle body and comprises an installation disc, a supporting frame is welded and fixed to the top face of the installation disc, and a water pump is fixedly installed on the top face of the supporting frame; a rotating assembly is mounted on the bottom surface of the mounting disc, a guiding assembly is mounted on the bottom surface of the supporting frame, the bottom end of the guiding assembly penetrates through the mounting disc and then extends into the reaction kettle body, and a small ultrasonic probe and a liquid coating assembly are mounted on the outer wall of the rotating assembly. The small ultrasonic probe and the liquid coating assembly are driven to be attached to the inner wall of the reaction kettle to adapt to kettle bodies with different calibers, the small ultrasonic probe is attached to the inner wall of the curved-surface kettle body in a point contact mode to adapt to a complex curvature structure, and the thickness measurement precision is improved; the probe moving track density is flexibly adjusted according to detection requirements.

Description

Technical Field

[0001] The present invention relates to the technical field of reactor equipment detection, and particularly to a measuring device for the coating thickness of the inner wall of a reactor. Background Technique

[0002] As an atmospheric or high-pressure vessel widely used in the fields of chemical industry, medicine, food, etc., the inner wall of a reactor often needs to be coated with functional coatings such as anti-corrosion, anti-sticking, and high-temperature resistance to extend the service life of the equipment, ensure process stability, and guarantee production safety. However, during the long-term operation of the reactor, the inner wall coating may gradually peel off or have uneven thickness due to factors such as high temperature, corrosive media, and mechanical erosion, thereby affecting normal use and even causing safety accidents. Therefore, regular detection of the coating thickness of the inner wall of the reactor is an important means to ensure the safe operation of the equipment; At present, the commonly used coating thickness detection methods mainly include manual ultrasonic thickness gauge detection, destructive cutting sampling detection, etc. These methods generally have the following problems: On the one hand, manual detection requires personnel to enter the inside of the kettle body, which is difficult to operate and has a high safety risk, especially in large or closed-structure reactors; on the other hand, traditional detection methods are mostly single-point detection, and it is impossible to achieve comprehensive, uniform, and continuous data collection, resulting in large errors in the detection results. In addition, after some detections, re-coating and repair are required. If synchronous coating liquid operation cannot be achieved, the equipment needs to be repeatedly disassembled and assembled, and the work efficiency is low; At the same time, existing devices also have limitations in adapting to different specifications of reactors. In practical applications, the inner diameters of reactors vary greatly. If the structure of the detection device is fixed and non-adjustable, it is often necessary to customize special detection tools according to the size of the reactor, which not only has high costs and poor versatility, but also needs to be reconfigured when changing the equipment model, resulting in waste of resources and reducing the flexibility and adaptability of on-site detection; Therefore, to solve the above problems, it is necessary to develop an intelligent detection device with adjustable structure, flexible detection, and stable operation to improve the detection efficiency, ensure operation safety, and achieve standardization and high efficiency in the equipment maintenance process.

[0003] After retrieval, it is found that the prior art publication number is CN109556493B, which discloses a measuring device and method for the coating thickness of the inner wall of a reactor. The sleeve of the device is provided with a positioning perforation and a positioning post; the measuring bracket includes a support rod and a movable rod fixedly connected to the support rod. The movable rod is movably sleeved in the positioning perforation, and a positioning sleeve is arranged on the movable rod; a dial indicator or a micrometer is installed on the support rod; the sleeve passes through the through hole and is relatively fixed to the reactor. Place the measuring bracket in the reactor and extend the movable rod into the sleeve until the positioning post is inserted into the positioning sleeve to take a reading; the difference between the value obtained by measuring the reactor with a coating on the inner wall by this device and the value obtained by measuring the reactor matrix without a coating on the inner wall by this device is the coating thickness of the reactor. The device of this scheme has a simple structure, low cost, and high measurement accuracy. It is especially suitable for measuring reactors that are not flat, such as spherical objects or irregular objects like reactors, and is very convenient to use. It can be realized by one operator.

[0004] Therefore, based on the above retrieval and in combination with the existing technology, there is a prior measuring device and method for the coating thickness of the inner wall of a reactor. This device requires the operator to manually insert the movable rod and observe the reading of the mechanical meter. There are human operation errors in the whole process, which is not suitable for large-scale, continuous or high-frequency detection, does not support remote control or automatic data collection, has a low degree of intelligence, and at the same time cannot flexibly cope with reactors of different specifications, different sizes or large differences in inner diameters, and is not convenient for popularization. Summary of the Invention

[0005] The purpose of the present invention is to provide a measuring device for the coating thickness of the inner wall of a reactor to solve the problems raised in the above background technology.

[0006] To achieve the above purpose, the present invention provides the following technical solutions: including a reactor body, a positioning component is fixedly installed at the top feeding port of the reactor body. The positioning component includes a mounting plate. A support frame is welded and fixed at the center of the top surface of the mounting plate. A water pump is fixedly installed on the top surface of the support frame. A rotating component is installed on the bottom surface of the mounting plate. The rotating component is connected to the water pump through a water delivery pipe. A guiding component is installed on the bottom surface of the support frame. The bottom end of the guiding component passes through the mounting plate and extends into the reactor body. Part of the rotating component can rotate on the outer wall of the guiding component. A small ultrasonic probe and a coating liquid component are respectively installed on the outer wall of the rotating component. The small ultrasonic probe abuts against the inner wall of the reactor body and detects the coating on the inner wall of the reactor body.

[0007] As a further scheme of the present invention, a plurality of sliding frames are welded at equal intervals on the circumference of the top surface of the mounting plate. A positioning plate is slidably inserted into the inner wall of each of the plurality of sliding frames. A positioning ring is coaxially rotatably connected to the center of the top surface of the mounting plate. A plurality of connecting rods are hinged at equal intervals on the circumference of the top surface of the positioning ring. One end of each of the plurality of connecting rods away from the positioning ring is respectively hinged to the end of each of the plurality of positioning plates.

[0008] As a further solution of the present invention, an annular gear disk is coaxially and fixedly installed on the top surface of the mounting disk, a positioning rod is slidably installed on the outer wall of the positioning ring, a tooth block for fixing the positioning ring is welded and fixed at the bottom end of the positioning rod, and the tooth block is meshed and clamped with the annular gear disk.

[0009] As a further solution of the present invention, the rotating assembly includes a transfer ring, a sealing ring is coaxially rotatably connected to the outer wall of the transfer ring, two connecting pipes are symmetrically welded and fixed to the outer wall of the sealing ring, a driving ring is commonly installed on the outer walls of the two connecting pipes, and a guide rail sleeve is rotatably connected to the inner wall of the driving ring.

[0010] As a further solution of the present invention, two rotating clamping plates are symmetrically installed on the left and right of the outer wall of the driving ring, a rotating plate is hinged at the top ends of the two rotating clamping plates, and the small ultrasonic probe and the liquid coating assembly are respectively fixedly installed at the ends of the two rotating plates by bolts.

[0011] As a further solution of the present invention, sector-shaped corrugated sleeves are installed between the two groups of rotating plates and the rotating clamping plates, and the ends of the two connecting pipes far from the sealing ring respectively pass through the two rotating clamping plates and are connected to the two sector-shaped corrugated sleeves.

[0012] As a further solution of the present invention, two mounting cylinders are symmetrically installed on the left and right of the top surface of the transfer ring, a ball valve is slidably installed in the inner wall of each of the two mounting cylinders, a second spring is fixedly connected to the outer wall of each of the two ball valves, fixed brackets are provided at the top ends of the inner walls of the two mounting cylinders, and a shaping rod is slidably inserted at the center of the top surface of each of the two fixed brackets.

[0013] As a further solution of the present invention, the bottom ends of the two shaping rods are respectively connected to the outer walls of the two ball valves through connecting ropes, the top ends of the two shaping rods respectively pass through the bottom surface of the mounting disk and extend to the outside of the reaction kettle body, columnar corrugated sleeves are coaxially and fixedly installed on the top surfaces of the two mounting cylinders, and the top surfaces of the two columnar corrugated sleeves are fixedly installed on the bottom surface of the mounting disk.

[0014] As a further solution of the present invention, the guiding assembly includes a sliding rod and a rotating cylinder, the top end of the sliding rod is coaxially and fixedly installed on the bottom surface of the support frame, the rotating cylinder is rotatably connected to the center of the top surface of the mounting disk, a guiding spring is sleeved on the outer wall of the sliding rod, the outer diameter of the guiding spring is adapted to the inner diameter of the guide rail sleeve, the guide rail sleeve is slidably sleeved on the outer wall of the spring wire of the guiding spring, and an adjusting plate is welded and fixed to the inner wall of the rotating cylinder, and the adjusting plate is inserted between the spring wires of the guiding spring.

[0015] As a further solution of the present invention, the liquid coating assembly includes a storage cylinder, a piston rod is slidably connected to the inner wall of the storage cylinder, a limiting sleeve is provided at the end of the piston rod far from the storage cylinder, a rolling bead is rotatably installed in the inner wall of the limiting sleeve, a pressurizing piston is slidably installed inside the storage cylinder, and a third spring is clamped between the pressurizing piston and the piston rod.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. During the use of the present invention, through the rapid positioning and clamping of the positioning component at the feeding port of the reactor body, the limit can be quickly released after the operator pulls the pull ring, enabling the positioning ring to rotate freely. By means of the connecting rod, the positioning plate is driven to move, so that the clamping jaws firmly hold the outer wall of the reactor opening, thus completing the coaxial positioning of the device and the reactor. After releasing the pull ring, the tooth block meshes with the tooth disc again under the action of the spring, realizing the automatic fixation of the positioning ring, ensuring that the device can be reliably and stably installed on the reactor, and improving the operation convenience and device versatility. 2. During the use of the present invention, the water pump is used to supply water to drive the expansion of the fan-shaped corrugated sleeve, driving the rotating plate to open the end of the probe, so that the ultrasonic probe is attached to the inner wall of the reaction kettle by the coating liquid component, adapting to kettle bodies of different diameters. Subsequently, the columnar corrugated sleeve extends to drive the rotating component to move downward. Under the coordinated action of the guiding spring and the driving structure, the ultrasonic probe and the coating liquid component realize a spiral movement along the inner wall, reaching the bottom of the kettle body, completing the detection path planning of full coverage. During the whole process, glycerol is automatically coated on the inner wall as a liquid coupling agent, which not only enhances the ultrasonic signal conduction but also reduces the probe wear, realizing the integrated synchronous operation of detection and coating. 3. During the use of the present invention, the small ultrasonic probe is attached to the inner wall of the curved kettle body in a point-contact form, adapting to complex curvature structures and improving the thickness measurement accuracy. At the same time, the Bluetooth transmission module can be used to transmit the detection data to the host computer in real time, realizing accurate data acquisition and remote monitoring. In addition, the guiding component is provided with a guiding spring system with adjustable spring wire density, which can adjust the density of the probe running track according to the detection requirements, so as to flexibly adjust the detection resolution, realizing the unity of high precision and high flexibility and meeting the detection requirements under various application scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the overall structure schematic diagram of the present invention; Figure 2 is the overall structure explosion diagram of the present invention; Figure 3 is the overall structure sectional view of the present invention; Figure 4 is the structure schematic diagram of the positioning component of the present invention; Figure 5 is the structure explosion diagram of the positioning component of the present invention; Figure 6 is the structure part drawing of the mounting plate of the present invention; Figure 7 is the structure schematic diagram of the rotating component of the present invention; Figure 8 is the structure explosion diagram of the rotating component of the present invention; Figure 9 is the local structure magnification of the present invention Figure One ; Figure 10 Local structure magnification of the present invention Figure Two ; Figure 11 Cross-sectional view of the rotating component structure of the present invention; Figure 12 Cross-sectional view of the local structure of the present invention; Figure 13 Exploded view of the guiding component structure of the present invention; Figure 14 Exploded view of the coating liquid component structure of the present invention; Figure 15 Cross-sectional view of the coating liquid component structure of the present invention.

[0018] In the figure: 1. Reactor body; 2. Positioning component; 21. Mounting plate; 211. Support frame; 212. Sliding frame; 213. Handle; 22. Positioning plate; 23. Positioning ring; 24. Link; 25. Annular gear disk; 26. Positioning rod; 27. First spring; 3. Water pump; 31. Water delivery pipe; 4. Rotating component; 41. Intermediate transfer ring; 411. Water inlet; 412. Water outlet; 42. Sealing ring; 421. Connecting pipe; 43. Driving ring; 431. Fixed cylinder; 432. Mounting plate; 433. Rotating groove; 44. Guide rail sleeve; 45. Rotating clamping plate; 451. Rotating plate; 46. Sector corrugated sleeve; 47. Mounting cylinder; 471. Fixed support; 48. Ball valve; 481. Connecting rope; 482. Second spring; 49. Columnar corrugated sleeve; 491. Shaping rod; 492. Sealing piston; 5. Guiding component; 51. Slide bar; 52. Guiding spring; 53. Rotating cylinder; 531. Adjusting plate; 6. Small ultrasonic probe; 7. Coating liquid component; 71. Storage cylinder; 72. Piston rod; 721. Limit sleeve; 73. Rolling beads; 74. Connecting pipe; 75. Pressurizing piston; 76. Third spring. Detailed implementation manners

[0019] 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. Embodiment

[0020] Please refer to Figures 1 - 6, a measuring device for the inner wall coating thickness of a reaction kettle, comprising a reaction kettle body 1. At the top feeding port of the reaction kettle body 1, a positioning assembly 2 is fixedly installed. The positioning assembly 2 includes a mounting plate 21. At the center of the top surface of the mounting plate 21, a support frame 211 is welded and fixed. On the top surface of the support frame 211, a water pump 3 is fixedly installed. At the bottom surface of the mounting plate 21, a rotating assembly 4 is installed. The rotating assembly 4 is connected to the water pump 3 through a water delivery pipe 31. Specifically, the water pump 3 supplies water to the inside of the rotating assembly 4 through the water delivery pipe 31. The water delivery pipe 31 is made of flexible rubber material, and the length of the water delivery pipe 31 has a surplus, facilitating the rotating assembly 4 to reach the inner bottom surface of the reaction kettle body 1. At the bottom surface of the support frame 211, a guiding assembly 5 is installed. The bottom end of the guiding assembly 5 passes through the mounting plate 21 and extends into the reaction kettle body 1. Specifically, a vertically penetrating insertion hole is opened at the center of the top surface of the mounting plate 21. The bottom end of the guiding assembly 5 abuts against the inner bottom surface of the reaction kettle body 1. A part of the rotating assembly 4 can rotate on the outer wall of the guiding assembly 5. On the outer wall of the rotating assembly 4, a small ultrasonic probe 6 and a coating liquid assembly 7 are respectively installed. The small ultrasonic probe 6 abuts against the inner wall of the reaction kettle body 1 and detects the coating on the inner wall of the reaction kettle body 1. Specifically, the model of the small ultrasonic probe 6 is Olympus M116. The small ultrasonic probe 6 supports double-layer measurement of the coating + matrix. During the use of the small ultrasonic probe 6, flexible water immersion is required and it is in point contact with the inner wall of the reaction kettle body 1, which can well adapt to the curved working environment. The small ultrasonic probe 6 is connected with a Bluetooth transmission module. During the detection process, the detection data is transmitted to the upper computer through the Bluetooth transmission module to achieve accurate data acquisition.

[0021] Please refer to Figures 2 - 6, a plurality of sliding frames 212 are welded equidistantly on the circumference of the top surface of the installation disk 21. A positioning plate 22 is slidably inserted into the inner walls of the plurality of sliding frames 212. Specifically, the outer wall size of the positioning plate 22 is adapted to the inner wall size of the sliding frame 212. The sliding frame 212 has a limiting and guiding effect on the positioning plate 22. A positioning ring 23 is coaxially rotatably connected to the center of the top surface of the installation disk 21. A plurality of connecting rods 24 are hinged equidistantly on the circumference of the top surface of the positioning ring 23. One ends of the plurality of connecting rods 24 away from the positioning ring 23 are respectively hinged to the ends of the plurality of positioning plates 22. Specifically, an annular slide rail is opened at the center of the top surface of the installation disk 21. An annular rib is provided on the bottom surface of the positioning ring 23. The annular rib is slidably connected inside the annular slide rail. The annular slide rail has a limiting and guiding effect on the annular rib, so that the positioning ring 23 can only rotate at the center of the top surface of the installation disk 21. Claws are welded and fixed to one ends of the plurality of positioning plates 22 away from the connecting rods 24. When the positioning ring 23 rotates, the plurality of positioning plates 22 are driven by the plurality of connecting rods 24 to slide on the inner walls of the sliding frames 212, thereby adjusting the positions of the claws at the ends of the positioning plates 22 until the outer wall of the feed inlet of the reactor body 1 is clamped by the plurality of claws, thereby concentrically positioning the positioning assembly 2 and the reactor body 1. An annular gear disk 25 is coaxially and fixedly installed on the top surface of the installation disk 21. Specifically, an installation groove is opened at the center of the top surface of the installation disk 21, and the annular gear disk 25 is fixedly installed in the installation groove. A positioning rod 26 is slidably installed on the outer wall of the positioning ring 23. A tooth block for fixing the positioning ring 23 is welded and fixed to the bottom end of the positioning rod 26. The tooth block is meshed and clamped with the annular gear disk 25. Specifically, an extension arm is provided on the outer wall of the positioning ring 23. The positioning rod 26 is slidably inserted into the end of the extension arm. A blocking ring is provided at the top end of the positioning rod 26. The blocking ring is used to prevent the positioning rod 26 from falling off the end of the extension arm. A pull ring for facilitating the pulling of the positioning rod 26 is provided on the top surface of the blocking ring. A first spring 27 is sleeved on the outer wall of the positioning rod 26. The top end of the first spring 27 abuts against the bottom surface of the extension arm, and the bottom end of the first spring 27 abuts against the top surface of the tooth block. The first spring 27 has a downward pressure on the positioning rod 26, so that the tooth block is tightly meshed and clamped with the annular gear disk 25. Two handles 213 are welded and fixed to the outer wall of the installation disk 21. The device is carried to the feed inlet of the reactor body 1 through the two handles 213. By pulling the pull ring, the tooth block of the positioning rod 26 is disengaged from the meshing and clamping with the annular gear disk 25, and the first spring 27 is compressed, so that the positioning ring 23 resumes free rotation. When the positioning ring 23 rotates, the plurality of positioning plates 22 are driven by the plurality of connecting rods 24 to slide on the inner walls of the sliding frames 212, thereby adjusting the positions of the claws at the ends of the positioning plates 22 until the outer wall of the feed inlet of the reactor body 1 is clamped by the plurality of claws, and the positioning assembly 2 is concentrically positioned with the reactor body 1. At this time, the pulling force on the pull ring is released, and the first spring 27 releases elastic force to tightly mesh and clamp the tooth block with the annular gear disk 25, thereby completing the fixing of the positioning ring 23. At this time, the claws of the plurality of positioning plates 22 fixedly install the positioning assembly 2 at the feed inlet of the reactor body 1, facilitating the next step of work. Embodiment

[0022] Please refer to Figure 2 and Figures 6 - 13 A measuring device for the coating thickness of the inner wall of a reactor, which is different from that of Embodiment 1 in that the rotating assembly 4 includes a transfer ring 41. A sealing ring 42 is coaxially and rotatably connected to the outer wall of the transfer ring 41. Specifically, a water inlet 411 is provided on the top surface of the transfer ring 41. The water inlet 411 is coaxially connected to the bottom end of the water delivery pipe 31. The water delivery pipe 31 is communicated with the inside of the transfer ring 41. The water pump 3 supplies water to the inside of the transfer ring 41 through the water delivery pipe 31. A through groove is provided on the outer wall of the transfer ring 41. Clamping chutes are respectively provided on the upper and lower sides of the through groove on the outer wall of the transfer ring 41. The top and bottom ends of the sealing ring 42 are respectively slidably connected inside the two clamping chutes. Lubricating oil is applied inside the clamping chutes, which can reduce the friction when the sealing ring 42 rotates on the outer wall of the transfer ring 41. The transfer ring 41 and the sealing ring 42 form a closed ring body. Rubber rings are bonded to the top and bottom ends of the inner wall of the sealing ring 42, and the rubber rings can effectively improve the sealing performance of the closed ring body. Two connecting pipes 421 are symmetrically welded and fixed to the outer wall of the sealing ring 42. A driving ring 43 is installed on the outer walls of the two connecting pipes 421. Specifically, two fixing cylinders 431 are symmetrically provided on the top surface of the driving ring 43. The two connecting pipes 421 are respectively fixedly inserted into the inner walls of the two fixing cylinders 431. A guide rail sleeve 44 is rotatably connected to the inner wall of the driving ring 43. Specifically, a rotating groove 433 is provided on the inner wall of the driving ring 43, and the rotating shaft of the guide rail sleeve 44 is rotatably connected to the inner wall of the rotating groove 433. Two rotating clamping plates 45 are symmetrically installed on the outer wall of the driving ring 43. A rotating plate 451 is hinged to the top ends of the two rotating clamping plates 45. The small ultrasonic probe 6 and the coating liquid assembly 7 are respectively fixedly installed at the ends of the two rotating plates 451 through bolts. Sector-shaped corrugated sleeves 46 are installed between the two groups of rotating plates 451 and the rotating clamping plates 45. The ends of the two connecting pipes 421 far from the sealing ring 42 respectively pass through the two rotating clamping plates 45 and are connected to the two sector-shaped corrugated sleeves 46. Specifically, mounting plates 432 are provided on the left and right side walls of the driving ring 43. The two rotating clamping plates 45 are respectively fixedly connected to the two mounting plates 432 through bolts. The water pump 3 supplies water to the inside of the closed ring body formed by the transfer ring 41 and the sealing ring 42 through the water delivery pipe 31. The water inside the closed ring body enters the two sector-shaped corrugated sleeves 46 respectively through the two connecting pipes 421. When the water pressure inside the sector-shaped corrugated sleeve 46 reaches a certain level, the sector-shaped corrugated sleeve 46 will expand into a quarter of a sector shape. The sector-shaped corrugated sleeve 46 drives the rotating plate 451 to rotate at the top end of the rotating clamping plate 45. The two rotating plates 451 respectively drive the small ultrasonic probe 6 and the coating liquid assembly 7 to move until the end parts of the small ultrasonic probe 6 and the coating liquid assembly 7 respectively abut against the inner wall of the reactor body 1, so as to adapt to the inner wall detection of the reactor body 1 with different diameters.

[0023] Please refer to Figures 6 - 8 and Figure 11 and Figure 12, two mounting cylinders 47 are symmetrically installed on the top surface of the transfer ring 41. Specifically, two water outlets 412 are symmetrically arranged on the left and right of the top surface of the transfer ring 41. The two mounting cylinders 47 are respectively communicated with the inside of the transfer ring 41 through the two water outlets 412. A ball valve 48 is slidably installed on the inner wall of each of the two mounting cylinders 47. A second spring 482 is fixedly connected to the outer wall of each of the two ball valves 48. At the top end of the inner wall of each of the two mounting cylinders 47, there is a fixed bracket 471. Specifically, at the bottom end of the inner wall of each of the two mounting cylinders 47, there is an abutting ring made of rubber. The outer walls of the two ball valves 48 are respectively abutted against the abutting rings. The end of the second spring 482 away from the ball valve 48 is fixedly connected to the bottom surface of the fixed bracket 471. The ball valve 48 is tightly abutted against the abutting ring by the elastic force released by the second spring 482. A shaping rod 491 is slidably inserted through the center of the top surface of each of the two fixed brackets 471. The bottom ends of the two shaping rods 491 are respectively connected to the outer walls of the two ball valves 48 through connecting ropes 481. The top ends of the two shaping rods 491 extend outside the reaction kettle body 1 after passing through the bottom surface of the mounting plate 21. Specifically, please refer to Figure 10 , Figure 12 , the shaping rod 491 is a rigid rod. Two convex rings are respectively arranged at the bottom end of the outer wall of the shaping rod 491. A plugging hole is opened at the center of the top surface of the fixed bracket 471. The part of the shaping rod 491 between the two convex rings is slidably inserted into the plugging hole. The two convex rings are used to prevent the bottom end of the shaping rod 491 from falling off the inner wall of the plugging hole. Two through holes are opened on the top surface of the mounting plate 21. The two shaping rods 491 are respectively slidably connected to the inner walls of the two through holes. A pull ring is arranged at the top end of each of the two shaping rods 491. Two columnar corrugated sleeves 49 are coaxially and fixedly installed on the top surface of each of the two mounting cylinders 47. The top surfaces of the two columnar corrugated sleeves 49 are fixedly installed on the bottom surface of the mounting plate 21. Specifically, a sealing piston 492 is installed at the top end of the inner wall of each of the two columnar corrugated sleeves 49. A plugging hole is opened on the top surface of each of the two sealing pistons 492. The outer walls of the two shaping rods 491 are respectively slidably inserted into the plugging holes of the two sealing pistons 492. Embodiment

[0024] Please refer to Figure 2 , Figures 6 - 15, A measuring device for the coating thickness of the inner wall of a reaction kettle, which is different from that in Embodiment 1 in that the guiding assembly 5 includes a slide rod 51 and a rotating cylinder 53. The top end of the slide rod 51 is coaxially and fixedly installed on the bottom surface of the support frame 211, and the rotating cylinder 53 is rotatably connected to the center of the top surface of the mounting plate 21. Specifically, a circular limiting slide rail is provided at the center of the top surface of the mounting plate 21, and a convex ring is provided at the bottom end of the outer wall of the rotating cylinder 53. The convex ring is rotatably connected inside the limiting slide rail, and the limiting slide rail has a limiting effect on the rotating cylinder 53 to prevent the rotating cylinder 53 from falling off the top surface of the mounting plate 21. A guiding spring 52 is sleeved on the outer wall of the slide rod 51. The outer diameter of the guiding spring 52 is adapted to the inner diameter of the guide sleeve 44. The guide sleeve 44 is slidably sleeved on the outer wall of the spring wire of the guiding spring 52. A regulating plate 531 is welded and fixed to the inner wall of the rotating cylinder 53. The regulating plate 531 is inserted between the spring wires of the guiding spring 52. Specifically, the spring wire of the guiding spring 52 is divided into a compressed part of the spring wire and a released part of the spring wire by the rotating cylinder 53. By driving the regulating plate 531 to move between the spring wires of the guiding spring 52 through the rotation of the rotating cylinder 53, the density of the released part of the spring wire can be changed, indirectly changing the detection density of the small ultrasonic probe 6 on the inner wall of the reaction kettle body 1.

[0025] Please refer to Figure 2 , Figure 8 , Figure 14 , Figure 15 , The coating liquid assembly 7 includes a storage cylinder 71. Specifically, the storage cylinder 71 is fixedly installed at the end of the rotating plate 451 by bolts. A piston rod 72 is slidably connected to the inner wall of the storage cylinder 71. A limiting sleeve 721 is provided at the end of the piston rod 72 away from the storage cylinder 71. A rolling bead 73 is rotatably installed on the inner wall of the limiting sleeve 721. Specifically, a fine flannelette is sleeved on the outer wall of the rolling bead 73, and there is a certain gap between the outer wall of the rolling bead 73 and the inner wall of the limiting sleeve 721. A pressure piston 75 is slidably installed inside the storage cylinder 71. A third spring 76 is clamped between the pressure piston 75 and the piston rod 72. Specifically, an oil passage that penetrates left and right is opened inside the piston rod 72, and an oil groove that penetrates left and right is opened on the pressure piston 75. The piston rod 72 is connected to the pressure piston 75 through a connecting pipe 74. The chamber formed by the pressure piston 75 and the storage cylinder 71 is filled with glycerol. The glycerol acts as a liquid couplant and is applied to the path to be detected on the inner wall of the reaction kettle body 1, reducing the wear of the small ultrasonic probe 6 and enhancing the detection effect.

[0026] The working principle of the present invention is as follows: When the device is in use, the operator carries the device to the feeding port of the reaction kettle body 1 through the grip 213, pulls the pull ring to disengage the tooth block of the positioning rod 26 from the meshing connection with the annular tooth disc 25, thereby releasing the limit on the positioning ring 23, enabling the positioning ring 23 to rotate freely. Rotating the positioning ring 23 drives a plurality of connecting rods 24 to make the positioning plate 22 slide within the sliding frame 212, and finally its clamping jaws clamp the outer wall of the feeding port of the reaction kettle body 1, achieving the concentric positioning of the positioning assembly 2 and the reaction kettle body 1. After releasing the pull ring, under the action of the first spring 27, the tooth block meshes with the annular tooth disc 25 again, realizing the fixation of the positioning ring 23, thereby stably installing the device at the feeding port of the reaction kettle body 1. After positioning is completed, the water pump 3 supplies water to the rotating assembly 4 through the flexible water pipe 31. The water flow flows into the closed ring body formed by the middle transfer ring 41 and the sealing ring 42, and is further conveyed into the sector corrugated sleeve 46 through the connecting pipe 421. Under the action of water pressure, the sector corrugated sleeve 46 unfolds to drive the rotating plate 451 to rotate, thereby driving the small ultrasonic probe 6 and the coating liquid assembly 7 at the end to open outwards, and abutting the small ultrasonic probe 6 and the end of the coating liquid assembly 7 against the inner wall of the reaction kettle body 1 respectively, realizing the adaptive detection and positioning of reaction kettles with different diameters. When the volume inside the sector corrugated sleeve 46 reaches the specified threshold, the water pressure inside the closed ring body formed by the middle transfer ring 41 and the sealing ring 42 continues to increase, pushing the ball valve 48, compressing the second spring 482, and entering the columnar corrugated sleeve 49 through the mounting cylinder 47. After the columnar corrugated sleeve 49 is filled with water, the compressed part of the columnar corrugated sleeve 49 begins to stretch, and the columnar corrugated sleeve 49 drives the rotating assembly 4 to move downward. During this process, the shaping rod 491 plays a role in supporting and shaping, ensuring that the middle transfer ring 41 makes a vertical movement directly below the mounting disc 21. Since the guide sleeve 44 of the driving ring 43 is slidably sleeved on the outer wall of the spring wire of the guiding spring 52, when the sealing ring 42 moves downward following the middle transfer ring 41, the driving ring 43 and the guide sleeve 44 rotate under the guiding action of the guiding spring 52, and the driving ring 43 drives the sealing ring 42 to rotate synchronously. The driving ring 43 drives the small ultrasonic probe 6 and the coating liquid assembly 7 to make a spiral movement on the inner wall of the reaction kettle body 1 through two rotating plates 451 until they reach the inner bottom surface of the reaction kettle body 1, and then the water pump 3 stops supplying water. During the detection process, the small ultrasonic probe 6 can measure the double-layer thickness of the coating and the substrate on the inner wall of the reactor body 1. The small ultrasonic probe 6 fits the inner wall in a point contact form, adapts to the curved surface structure of the reactor, and improves the detection accuracy. At the same time, the pressurized piston 75 inside the storage cylinder 71 squeezes the glycerin as a coupling agent to the limit sleeve 721 through the connecting pipe 74 under the action of the third spring 76, and applies it to the inner wall of the reactor body 1 through the rolling ball 73. Glycerin acts as a liquid coupling agent and is applied to the path to be detected, which reduces the wear of the small ultrasonic probe 6 and enhances the coupling effect of the ultrasonic signal. The small ultrasonic probe 6 is connected to a Bluetooth transmission module. During the detection process, the detection data is transmitted to the host computer through the Bluetooth transmission module to achieve accurate data collection; The guide assembly 5 is composed of a slide bar 51, a rotating cylinder 53 and a guide spring 52, and is used to provide support and guidance for the movement of the rotating assembly 4. The spring wire of the guide spring 52 is divided into a spring wire of a compression part and a spring wire of a release part by the rotating cylinder 53. The rotation of the rotating cylinder 53 drives the adjustment plate 531 to move between the spring wires of the guide spring 52, which can change the density of the spring wire of the release part, and indirectly change the detection density of the small ultrasonic probe 6 on the inner wall of the reactor body 1, and can adjust the detection resolution according to the situation; When the device inspection is completed, the operator can pull the pull ring at the top of the shaping rod 491 on the installation tube 47 to drive the ball valve 48 to open, and use the water pump 3 to quickly evacuate the water in the closed loop, so as to facilitate the disassembly of the device and complete the measurement operation; at this point, the device is completed.

[0027] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed in the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A measuring device for the coating thickness of the inner wall of a reactor, comprising a reactor body (1), characterized in that: A positioning component (2) is fixedly installed at the top feeding port of the reactor body (1). The positioning component (2) includes a mounting disc (21). A support frame (211) is welded and fixed at the center of the top surface of the mounting disc (21). A water pump (3) is fixedly installed on the top surface of the support frame (211). A rotating component (4) is installed on the bottom surface of the mounting disc (21). The rotating component (4) is connected to the water pump (3) through a water delivery pipe (31). A guiding component (5) is installed on the bottom surface of the support frame (211). The bottom end of the guiding component (5) passes through the mounting disc (21) and extends into the reactor body (1). A part of the rotating component (4) can rotate on the outer wall of the guiding component (5). A small ultrasonic probe (6) and a coating liquid component (7) are respectively installed on the outer wall of the rotating component (4). The small ultrasonic probe (6) abuts against the inner wall of the reactor body (1) and detects the coating on the inner wall of the reactor body (1).

2. The measuring device for the coating thickness of the inner wall of a reactor according to claim 1, wherein: A plurality of sliding frames (212) are welded at equal intervals on the circumference of the top surface of the mounting disc (21). A positioning plate (22) is slidably inserted into the inner wall of each of the plurality of sliding frames (212). A positioning ring (23) is coaxially rotatably connected to the center of the top surface of the mounting disc (21). A plurality of connecting rods (24) are hinged at equal intervals on the circumference of the top surface of the positioning ring (23). One end of each of the plurality of connecting rods (24) away from the positioning ring (23) is respectively hinged to the end of each of the plurality of positioning plates (22).

3. The measuring device for the coating thickness of the inner wall of a reaction kettle according to claim 2, characterized in that: An annular gear disc (25) is coaxially fixedly installed on the top surface of the mounting disc (21). A positioning rod (26) is slidably installed on the outer wall of the positioning ring (23). A tooth block for fixing the positioning ring (23) is welded and fixed at the bottom end of the positioning rod (26). The tooth block is meshed and clamped with the annular gear disc (25).

4. A measuring device for the coating thickness of the inner wall of a reactor according to claim 3, characterized in that: The rotating component (4) includes a transfer ring (41). A sealing ring (42) is coaxially rotatably connected to the outer wall of the transfer ring (41). Two connecting pipes (421) are symmetrically welded and fixed to the outer wall of the sealing ring (42). A driving ring (43) is jointly installed on the outer walls of the two connecting pipes (421). A guide rail sleeve (44) is rotatably connected to the inner wall of the driving ring (43).

5. The measuring device for the inner wall coating thickness of a reaction kettle according to claim 4, wherein: Two rotating clamping plates (45) are symmetrically installed on the left and right of the outer wall of the driving ring (43). A rotating plate (451) is hinged at the top ends of the two rotating clamping plates (45). The small ultrasonic probe (6) and the coating liquid component (7) are respectively fixedly installed at the ends of the two rotating plates (451) through bolts.

6. The measuring device for the coating thickness of the inner wall of a reactor according to claim 5, characterized in that: Sector-shaped corrugated sleeves (46) are installed between the two groups of rotating plates (451) and the rotating clamping plates (45). One end of each of the two connecting pipes (421) away from the sealing ring (42) passes through the two rotating clamping plates (45) and is connected to the two sector-shaped corrugated sleeves (46).

7. The measuring device for the coating thickness of the inner wall of a reactor according to claim 6, characterized in that: Two mounting cylinders (47) are symmetrically installed on the left and right of the top surface of the transfer ring (41). A ball valve (48) is slidably installed in the inner wall of each of the two mounting cylinders (47). A second spring (482) is fixedly connected to the outer wall of each of the two ball valves (48). Fixed brackets (471) are provided at the top ends of the inner walls of the two mounting cylinders (47). A shaping rod (491) is slidably inserted into the center of the top surface of each of the two fixed brackets (471).

8. A measuring device for the coating thickness of the inner wall of a reaction kettle according to claim 7, characterized in that: The bottom ends of the two shaping rods (491) are respectively connected to the outer walls of the two ball valves (48) through connecting ropes (481). The top ends of the two shaping rods (491) extend outside the reactor body (1) after passing through the bottom surface of the mounting plate (21). Columnar corrugated sleeves (49) are coaxially and fixedly installed on the top surfaces of the two mounting cylinders (47). The top surfaces of the two columnar corrugated sleeves (49) are fixedly installed on the bottom surface of the mounting plate (21).

9. The measuring device for the coating thickness of the inner wall of a reactor according to claim 1, wherein: The guiding assembly (5) includes a sliding rod (51) and a rotating cylinder (53). The top end of the sliding rod (51) is coaxially and fixedly installed on the bottom surface of the support frame (211). The rotating cylinder (53) is rotatably connected to the center of the top surface of the mounting plate (21). A guiding spring (52) is sleeved on the outer wall of the sliding rod (51). The outer diameter of the guiding spring (52) is adapted to the inner diameter of the guide rail sleeve (44). The guide rail sleeve (44) is slidably sleeved on the outer wall of the spring wire of the guiding spring (52). A regulating plate (531) is welded and fixed to the inner wall of the rotating cylinder (53). The regulating plate (531) is inserted between the spring wires of the guiding spring (52).

10. A measuring device for the inner wall coating thickness of a reactor according to claim 9, characterized in that: The coating liquid assembly (7) includes a storage cylinder (71). A piston rod (72) is slidably connected to the inner wall of the storage cylinder (71). A limiting sleeve (721) is provided at the end of the piston rod (72) away from the storage cylinder (71). A rolling bead (73) is rotatably installed on the inner wall of the limiting sleeve (721). A pressure piston (75) is slidably installed inside the storage cylinder (71). A third spring (76) is clamped between the pressure piston (75) and the piston rod (72).

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