A device for measuring the thickness of the coating on the inner wall of a reactor

Abstract

The present invention discloses a device for measuring the thickness of the coating on the inner wall of a reactor, which relates to the technical field of reactor equipment detection. The device comprises a reactor body, a positioning assembly installed on the top of the reactor body, the positioning assembly comprising a mounting plate, a support frame welded and fixed on the top surface of the mounting plate, a water pump fixedly installed on the top surface of the support frame, a rotating assembly installed on the bottom surface of the mounting plate, a guide assembly installed on the bottom surface of the support frame, the bottom end of the guide assembly passes through the mounting plate and extends into the interior of the reactor body, and a small ultrasonic probe and a coating liquid assembly are respectively installed on the outer wall of the rotating assembly. The present invention drives the fan-shaped corrugated sleeve to expand through water supply by the water pump, drives the small ultrasonic probe and the coating liquid assembly to fit the inner wall of the reactor, adapts to reactor bodies of different calibers, fits the curved reactor body wall in a point contact form through the small ultrasonic probe, adapts to complex curvature structures, improves the thickness measurement accuracy, and flexibly adjusts the probe running track density according to detection requirements through a guide spring system with adjustable spring wire density.

Description

Technical Field

[0001] The invention relates to the technical field of reactor equipment detection, in particular to a device for measuring the thickness of a reactor inner wall coating. Background Art

[0002] Reactors are atmospheric or high-pressure vessels widely used in the chemical, pharmaceutical, and food industries. Their inner walls often require coatings with functional coatings such as anti-corrosion, anti-sticking, and high-temperature resistance to extend equipment life, ensure process stability, and guarantee production safety. However, during long-term operation of the reactor, the inner wall coating may gradually fall off or become uneven in thickness due to factors such as high temperature, corrosive media, and mechanical erosion, thereby affecting normal use and even causing safety accidents. Therefore, regular testing of the reactor inner wall coating thickness is an important means to ensure the safe operation of the equipment.

[0003] 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:

[0004] On the one hand, manual inspection requires personnel to enter the reactor body, which is difficult to operate and has high safety risks, especially in large or closed structure reactors. On the other hand, traditional inspection methods are mostly single-point inspections, which cannot achieve comprehensive, uniform and continuous data collection, resulting in large errors in the inspection results. In addition, some inspections require re-coating and repair. If simultaneous coating operations cannot be achieved, the equipment must be repeatedly assembled and disassembled, which reduces work efficiency.

[0005] At the same time, existing devices are also limited in adapting to reactors of different specifications. In actual applications, the inner diameters of reactors vary greatly. If the detection device structure is fixed and cannot be adjusted, it is often necessary to customize special detection tools according to the reactor size. This is not only costly and has poor versatility, but also requires reconfiguration when changing equipment models, resulting in a waste of resources and reducing the flexibility and adaptability of on-site detection.

[0006] Therefore, in order to solve the above problems, it is necessary to develop an intelligent detection equipment with adjustable structure, flexible detection and stable operation to improve detection efficiency, ensure operational safety, and realize the standardization and efficiency of the equipment maintenance process.

[0007] After searching, it was found that the prior art publication number is CN109556493B, which discloses a device and method for measuring the thickness of the coating on the inner wall of a reactor. The sleeve of the device is provided with a positioning through-hole and a positioning column; the measuring bracket includes a support rod and a movable rod fixed to the support rod, the movable rod is movably sleeved in the positioning through-hole, and the movable rod is provided with a positioning sleeve; a dial indicator or a micrometer is installed on the support rod; the sleeve passes through the through-hole and is fixed relative to the reactor, the measuring bracket is placed in the reactor and the movable rod is extended into the sleeve until the positioning column is inserted into the positioning sleeve to read the reading; the difference between the value obtained by the device when measuring the reactor with the inner wall sprayed with the coating and the value obtained by the device when measuring the reactor substrate without the inner wall sprayed with the coating is the reactor coating thickness. The device of this scheme has a simple structure, low cost, and high measurement accuracy. It is particularly suitable for measuring non-planar reactors, such as spherical objects or irregular objects such as reactors. It is very convenient to use and can be performed by one operator.

[0008] Therefore, based on the above search and combined with existing technologies, an existing device and method for measuring the thickness of the inner wall coating of a reactor requires an operator to manually insert a movable rod and observe the reading of a mechanical meter. There are human operation errors in the whole process. It 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 cannot flexibly cope with reactors of different specifications, different sizes or large differences in inner diameters, and is not easy to promote. Summary of the Invention

[0009] The purpose of the present invention is to provide a device for measuring the thickness of the coating on the inner wall of a reactor to solve the problems raised in the above background technology.

[0010] To achieve the above-mentioned purpose, the present invention provides the following technical solution: it includes a reactor body, a positioning assembly is fixedly installed at the feeding port on the top of the reactor body, the positioning assembly 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 assembly is installed on the bottom surface of the mounting plate, the rotating assembly is connected to the water pump through a water pipe, a guide assembly is installed on the bottom surface of the support frame, the bottom end of the guide assembly passes through the mounting plate and extends to the interior of the reactor body, the rotating assembly part can rotate on the outer wall of the guide assembly, and a small ultrasonic probe and a coating liquid assembly are respectively installed on the outer wall of the rotating assembly, 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.

[0011] As a further solution of the present invention, several sliding frames are welded at equal intervals on the top surface of the mounting plate, positioning plates are slidably inserted into the inner walls of the several sliding frames, a positioning ring is coaxially connected to the center of the top surface of the mounting plate, several connecting rods are hinged at equal intervals on the top surface of the positioning ring, and the ends of the several connecting rods away from the positioning ring are hinged to the ends of the several positioning plates respectively.

[0012] As a further solution of the present invention, an annular gear disk is coaxially fixedly installed on the top surface of the mounting plate, a positioning rod is slidably installed on the outer wall of the positioning ring, and a tooth block for fixing the positioning ring is welded and fixed to the bottom end of the positioning rod, and the tooth block is engaged with the annular gear disk.

[0013] As a further solution of the present invention, the rotating assembly includes a transit ring, the outer wall of the transit ring is coaxially rotatably connected to a sealing ring, the outer wall of the sealing ring is symmetrically welded and fixed with two connecting pipes, the outer walls of the two connecting pipes are jointly installed with a drive ring, and the inner wall of the drive ring is rotatably connected to a guide rail sleeve.

[0014] As a further solution of the present invention, two rotating splints are symmetrically installed on the outer wall of the driving ring, and the top of the two rotating splints is hinged with a rotating plate. The small ultrasonic probe and the coating assembly are fixed to the ends of the two rotating plates by bolts respectively.

[0015] As a further solution of the present invention, sector-shaped corrugated sleeves are installed between the two sets of rotating plates and the rotating clamping plates, and the ends of the two connecting pipes away from the sealing rings pass through the two rotating clamping plates and are connected to the two sector-shaped corrugated sleeves.

[0016] As a further solution of the present invention, two mounting tubes are symmetrically installed on the top surface of the transit ring, a ball valve is slidably installed on the inner wall of the two mounting tubes, a second spring is fixedly connected to the outer wall of the two ball valves, a fixed bracket is provided at the top end of the inner wall of the two mounting tubes, and a shaping rod is slidably inserted at the center of the top surface of the two fixed brackets.

[0017] As a further solution of the present invention, the bottom ends of the two forming rods are respectively connected to the outer walls of the two ball valves through connecting ropes, the top ends of the two forming rods pass through the bottom surface of the mounting plate and extend to the outside of the reactor body, the top surfaces of the two mounting cylinders are coaxially fixed with cylindrical corrugated sleeves, and the top surfaces of the two cylindrical corrugated sleeves are fixedly mounted on the bottom surface of the mounting plate.

[0018] As a further solution of the present invention, the guide assembly includes a sliding rod and a rotating cylinder. The top end of the sliding rod is coaxially fixed on the bottom surface of the support frame. The rotating cylinder is rotatably connected to the center of the top surface of the mounting plate. The outer wall of the sliding rod is sleeved with a guide spring. The outer diameter of the guide 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 guide spring. An adjustment plate is welded and fixed to the inner wall of the rotating cylinder. The adjustment plate is inserted between the spring wires of the guide spring.

[0019] As a further solution of the present invention, the coating liquid assembly includes a storage cylinder, the inner wall of the storage cylinder is slidably connected to a piston rod, a limit sleeve is provided at the end of the piston rod away from the storage cylinder, a rolling ball is rotatably installed on the inner wall of the limit sleeve, a pressurizing piston is slidably installed inside the storage cylinder, and a third spring is sandwiched between the pressurizing piston and the piston rod.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. During use, the present invention quickly positions and clamps the positioning assembly at the feed port of the reactor body. After the operator pulls the pull ring, the limit can be quickly released, allowing the positioning ring to rotate freely. The positioning plate is driven to move by the connecting rod, so that the clamping claw firmly clamps the outer wall of the reactor port, thereby completing the coaxial positioning of the device and the reactor. After releasing the pull ring, the tooth block re-engages with the toothed disc under the action of the spring, realizing automatic fixation of the positioning ring, ensuring that the device can be reliably and stably installed on the reactor, and improving the operational convenience and versatility of the device.

[0022] 2. During use, the present invention uses water supplied by a water pump to drive the fan-shaped corrugated sleeve to expand, driving the rotating plate to open the probe end, so that the ultrasonic probe and the coating assembly can fit the inner wall of the reactor, adapting to reactor bodies of different calibers. Subsequently, the cylindrical corrugated sleeve is extended to drive the rotating assembly downward. Under the coordinated action of the guide spring and the driving structure, the ultrasonic probe and the coating assembly can achieve spiral motion along the inner wall, reaching the bottom of the reactor body, completing the comprehensive coverage detection path planning. During the entire process, glycerin is automatically coated on the inner wall as a liquid coupling agent, which not only enhances the transmission of ultrasonic signals but also reduces probe wear, realizing the integrated and synchronous operation of detection and coating.

[0023] 3. During use, the present invention uses a small ultrasonic probe to fit the inner wall of the curved kettle in point contact, adapting to complex curvature structures and improving thickness measurement accuracy. At the same time, in conjunction with the Bluetooth transmission module, the detection data can be transmitted to the host computer in real time, realizing accurate data collection and remote monitoring. In addition, the guide assembly is provided with a guide spring system with adjustable spring wire density, which can adjust the probe running track density according to the detection requirements, thereby flexibly adjusting the detection resolution, achieving the unity of high precision and high flexibility, and meeting the detection requirements in various application scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is an exploded view of the overall structure of the present invention;

[0026] Figure 3 It is a cross-sectional view of the overall structure of the present invention;

[0027] Figure 4 It is a schematic structural diagram of the positioning component of the present invention;

[0028] Figure 5 This is an exploded view of the positioning assembly structure of the present invention;

[0029] Figure 6 It is the structural parts diagram of the mounting plate of the present invention;

[0030] Figure 7It is a schematic structural diagram of the rotating assembly of the present invention;

[0031] Figure 8 An exploded view of the rotating assembly structure of the present invention;

[0032] Figure 9 Amplification of the local structure of the present invention Figure 1 ;

[0033] Figure 10 Amplification of the local structure of the present invention Figure 2 ;

[0034] Figure 11 A cross-sectional view of the rotating assembly structure of the present invention;

[0035] Figure 12 It is a partial structural cross-sectional view of the present invention;

[0036] Figure 13 An exploded view of the guide assembly structure of the present invention;

[0037] Figure 14 An exploded view of the coating assembly structure of the present invention;

[0038] Figure 15 It is a cross-sectional view of the coating liquid component structure of the present invention.

[0039] In the picture:

[0040] 1. Reactor body;

[0041] 2. Positioning assembly; 21. Mounting plate; 211. Support frame; 212. Sliding frame; 213. Handle; 22. Positioning plate; 23. Positioning ring; 24. Connecting rod; 25. Ring gear; 26. Positioning rod; 27. First spring;

[0042] 3. Water pump; 31. Water pipe;

[0043] 4. Rotating assembly; 41. Transfer ring; 411. Water inlet; 412. Water outlet; 42. Sealing ring; 421. Connecting pipe; 43. Driving ring; 431. Fixing cylinder; 432. Mounting plate; 433. Rotating groove; 44. Guide rail sleeve; 45. Rotating clamping plate; 451. Rotating plate; 46. Sector-shaped corrugated sleeve; 47. Mounting cylinder; 471. Fixing bracket; 48. Ball valve; 481. Connecting rope; 482. Second spring; 49. Columnar corrugated sleeve; 491. Forming rod; 492. Sealing piston;

[0044] 5. Guide assembly; 51. Slide rod; 52. Guide spring; 53. Rotating cylinder; 531. Adjustment plate;

[0045] 6. Small ultrasound probe;

[0046] 7. Coating liquid assembly; 71. Storage cylinder; 72. Piston rod; 721. Limit sleeve; 73. Rolling ball; 74. Connecting pipe; 75. Pressurizing piston; 76. Third spring. DETAILED DESCRIPTION

[0047] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention. Example

[0048] See also Figures 1 to 6 , a device for measuring the thickness of the coating on the inner wall of a reactor, comprising a reactor body 1, a positioning component 2 is fixedly installed at the feeding port on the top of the reactor body 1, the positioning component 2 comprises a mounting plate 21, a support frame 211 is welded and fixed at the center of the top surface of the mounting plate 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 plate 21, the rotating component 4 is connected to the water pump 3 through a water pipe 31, specifically, the water pump 3 supplies water to the inside of the rotating component 4 through the water pipe 31, the water pipe 31 is made of flexible rubber material, and the length of the water pipe 31 has a margin, so that the rotating component 4 can reach the bottom surface of the reactor body 1, a guide component 5 is installed on the bottom surface of the support frame 211, and the bottom end of the guide component 5 passes through the mounting plate 21 and extends to the inside of the reactor body 1, specifically, the center of the top surface of the mounting plate 21 A plug hole is provided at the top and bottom, the bottom end of the guide component 5 is in contact with the inner bottom surface of the reactor body 1, and the rotating component 4 can rotate on the outer wall of the guide component 5. A small ultrasonic probe 6 and a coating liquid component 7 are respectively installed on the outer walls of the rotating component 4. The small ultrasonic probe 6 is in contact with the inner wall of the reactor body 1 and detects the coating on the inner wall of the reactor body 1. Specifically, the model of the small ultrasonic probe 6 is Olympus M116. The small ultrasonic probe 6 supports double-layer measurement of coating + substrate. During the use of the small ultrasonic probe 6, it needs to be flexibly immersed in water and have a point contact structure with the inner wall of the reactor body 1, which can adapt well to the working environment of the curved surface. 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 realize accurate data collection.

[0049] See also Figures 2 to 6, a number of sliding frames 212 are welded on the top surface of the mounting plate 21 at equal intervals, and a positioning plate 22 is slidably inserted into the inner walls of the 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, and the sliding frame 212 has a limiting and guiding effect on the positioning plate 22. A positioning ring 23 is coaxially connected to the center of the top surface of the mounting plate 21, and a number of connecting rods 24 are hinged on the top surface of the positioning ring 23 at equal intervals. The ends of the connecting rods 24 away from the positioning ring 23 are respectively hinged to the ends of the positioning plates 22. Specifically, an annular slide rail is provided at the center of the top surface of the mounting plate 21, and an annular convex strip is provided on the bottom surface of the positioning ring 23. The annular convex strip is slidably connected to the inside of the annular slide rail, and the annular slide rail has a limiting and guiding effect on the annular convex strip. , so that the positioning ring 23 can only rotate at the center of the top surface of the mounting disk 21, and the ends of the positioning plates 22 away from the connecting rods 24 are welded and fixed with clamping claws. When the positioning ring 23 rotates, the connecting rods 24 drive the positioning plates 22 to slide on the inner wall of the sliding frame 212, thereby adjusting the position of the clamping claws at the end of the positioning plate 22 until the clamping claws clamp the outer wall of the feed port of the reactor body 1, thereby concentrically positioning the positioning assembly 2 and the reactor body 1. An annular toothed disc 25 is coaxially fixedly installed on the top surface of the mounting disk 21. Specifically, a mounting groove is provided at the center of the top surface of the mounting disk 21, and the annular toothed disc 25 is fixedly installed in the mounting groove. A positioning rod 26 is slidably installed on the outer wall of the positioning ring 23, and a positioning rod 26 is welded and fixed at the bottom end for fixing the positioning ring 2 3, the tooth block is engaged with the annular toothed disc 25. Specifically, an extension arm is provided on the outer wall of the positioning ring 23, and the positioning rod 26 is slidably inserted into the end of the extension arm. A blocking ring is provided on the top of the positioning rod 26. The blocking ring is used to prevent the positioning rod 26 from falling off from the end of the extension arm. The top surface of the blocking ring is provided with a pull ring for facilitating pulling the positioning rod 26. The outer wall of the positioning rod 26 is sleeved with a first spring 27. The top 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 exerts downward pressure on the positioning rod 26, so that the tooth block is tightly engaged with the annular toothed disc 25. Two handles 213 are welded and fixed to the outer wall of the mounting plate 21. The device is carried to the feed port of the reactor body 1 by the two handles 213. By pulling the pull ring, the tooth block of the positioning rod 26 is disengaged from the annular toothed disc 25, and the first spring 27 is compressed to allow the positioning ring 23 to resume free rotation. When the positioning ring 23 rotates, the positioning plates 22 are driven to slide on the inner wall of the sliding frame 212 through the connecting rods 24, so as to adjust the position of the clamping jaws at the end of the positioning plate 22 until the clamping jaws clamp the outer wall of the feed port of the reactor body 1 and position the positioning assembly 2 concentrically with the reactor body 1. At this time, the pulling force on the pull ring is released, and the first spring 27 releases the elastic force to tightly engage the tooth block with the annular toothed disc 25, thereby completing the fixation of the positioning ring 23. At this time, the clamping jaws of the positioning plates 22 fix the positioning assembly 2 at the feed port of the reactor body 1, which is convenient for the next step. Example

[0050] See also Figure 2 、 Figures 6 to 13 , a device for measuring the thickness of the coating on the inner wall of a reactor, which is different from Example 1 in that the rotating component 4 includes a transfer ring 41, and the outer wall of the transfer ring 41 is coaxially connected to a sealing ring 42. Specifically, a water inlet 411 is provided on the top surface of the transfer ring 41, and the water inlet 411 is coaxially connected to the bottom end of the water pipe 31. The water pipe 31 is connected to the inside of the transfer ring 41, and the water pump 3 supplies water to the inside of the transfer ring 41 through the water pipe 31. A through groove is provided on the outer wall of the transfer ring 41, and a clamping groove is 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 to the inside of the two clamping grooves, and the inside of the clamping groove is coated with lubricating oil, which can reduce The friction force of the low sealing ring 42 when the outer wall of the intermediate ring 41 rotates, the intermediate ring 41 and the sealing ring 42 form a closed ring body, and rubber rings are bonded to both ends of the top and bottom of the inner wall of the sealing ring 42. The rubber ring can effectively improve the sealing of the closed ring body. The outer wall of the sealing ring 42 is symmetrically welded with two connecting pipes 421, and the outer walls of the two connecting pipes 421 are jointly installed with a driving ring 43. Specifically, the top surface of the driving ring 43 is symmetrically provided with two fixed cylinders 431, and the two connecting pipes 421 are fixedly inserted into the inner walls of the two fixed cylinders 431 respectively. The inner wall of the driving ring 43 is rotatably connected with a guide sleeve 44. Specifically, the inner wall of the driving ring 43 is provided with a rotating groove 433, and the guide sleeve 4 4 is rotatably connected to the inner wall of the rotating groove 433, and two rotating splints 45 are symmetrically installed on the outer wall of the driving ring 43. The top of the two rotating splints 45 is hinged with a rotating plate 451. The small ultrasonic probe 6 and the coating component 7 are respectively fixed to the ends of the two rotating plates 451 by bolts. A fan-shaped corrugated sleeve 46 is installed between the two sets of rotating plates 451 and the rotating splints 45. The ends of the two connecting pipes 421 away from the sealing ring 42 pass through the two rotating splints 45 and are connected to the two fan-shaped corrugated sleeves 46. Specifically, the left and right side walls of the driving ring 43 are provided with mounting plates 432, and the two rotating splints 45 are respectively fixed to the two mounting plates 432 by bolts. The water pump 3 supplies water to the closed ring body formed by the transfer ring 41 and the sealing ring 42 through the water supply pipe 31. The water inside the closed ring body enters the two fan-shaped corrugated sleeves 46 respectively through the two connecting pipes 421. When the water pressure inside the fan-shaped corrugated sleeve 46 reaches a certain level, the fan-shaped corrugated sleeve 46 will expand into a quarter of the fan shape, and the fan-shaped corrugated sleeve 46 drives the rotating plate 451 to rotate on the top of the rotating splint 45. The two rotating plates 451 respectively drive the small ultrasonic probe 6 and the coating assembly 7 to move until the ends of the small ultrasonic probe 6 and the coating assembly 7 respectively abut against the inner wall of the reactor body 1, so as to adapt to the inner wall detection of reactor bodies 1 with different diameters.

[0051] See also Figures 6 to 8 、 Figure 11 、 Figure 12, two mounting cylinders 47 are symmetrically installed on the top surface of the intermediate ring 41. Specifically, two water outlets 412 are symmetrically arranged on the top surface of the intermediate ring 41. The two mounting cylinders 47 are connected to the interior of the intermediate 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. The outer walls of the two ball valves 48 are fixedly connected with a second spring 482. The top of the inner wall of each of the two mounting cylinders 47 is provided with a fixed bracket 471. Specifically, the bottom end of the inner wall of each of the two mounting cylinders 47 is provided with an abutment ring, which is made of rubber. The outer walls of the two ball valves 48 are respectively in contact with the abutment rings, and 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 abutment ring by releasing the elastic force of the second spring 482. A shaping rod 491 is slidably inserted at the center of the top surface 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 by connecting ropes 481. The top ends of the two shaping rods 491 pass through the bottom surface of the mounting plate 21 and extend to the outside of the reactor body 1. For details, please refer to Figure 10 、 Figure 12 The top of the two sealing pistons 492 are fixedly mounted on the bottom surface of the mounting plate 21. Specifically, the top of the inner wall of the two cylindrical corrugated sleeves 49 is equipped with a sealing piston 492, and the top surface of the two sealing pistons 492 is provided with a plug-in hole. The outer walls of the two shaping rods 491 are slidably plugged into the plug-in holes of the two sealing pistons 492. Example

[0052] See also Figure 2 、 Figures 6 to 15, a device for measuring the thickness of the coating on the inner wall of a reactor, which is different from Example 1 in that the guide assembly 5 includes a slide rod 51 and a rotating cylinder 53. The top end of the slide rod 51 is coaxially 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, an annular 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 to the inside of the limiting slide rail. 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. The outer wall of the slide rod 51 is sleeved with a guide spring 52. The outer diameter of the guide 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 guide spring 52. An adjustment plate 531 is welded and fixed to the inner wall of the rotating cylinder 53. The adjustment plate 531 is inserted between the spring wires of the guide spring 52. Specifically, 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.

[0053] See also Figure 2 、 Figure 8 、 Figure 14 、 Figure 15 The cam 72 is fixed to the top of the rotary plate 451 by bolts, and the inner wall of the cam 72 is slidably connected to the piston rod 72. The end of the piston rod 72 away from the cam 71 is provided with a limit sleeve 721. The inner wall of the limit sleeve 721 is rotatably mounted with a rolling ball 73. Specifically, the outer wall of the rolling ball 73 is covered with a fine velvet cloth. There is a certain gap between the outer wall of the rolling ball 73 and the inner wall of the limit sleeve 721. A pressurizing piston 75 is slidably mounted inside the cam 71. A third spring 76 is sandwiched between the pressurizing piston 75 and the piston rod 72. Specifically, an oil pipeline is provided inside the piston rod 72 to pass through it on the left and right sides, and the pressurizing piston 75 is provided with an oil groove to pass through it on the left and right sides. The piston rod 72 is connected to the pressurizing piston 75 through a connecting pipe 74. The interior of the chamber formed by the pressurizing piston 75 and the cam 71 is filled with glycerin. Glycerin acts as a liquid coupling agent and is smeared on the path to be detected on the inner wall of the reactor body 1, reducing the wear of the small ultrasonic probe 6 and enhancing the detection effect.

[0054] 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 reactor body 1 by means of the handle 213, pulls the pull ring to disengage the tooth block of the positioning rod 26 from the meshing engagement with the annular toothed disc 25, thereby releasing the limit on the positioning ring 23 and allowing the positioning ring 23 to rotate freely. The rotating positioning ring 23 drives the several connecting rods 24 to slide the positioning plate 22 in the sliding frame 212, and finally enables its claws to clamp the outer wall of the feeding port of the reactor body 1, thereby achieving concentric positioning of the positioning assembly 2 and the reactor body 1. After releasing the pull ring, under the action of the first spring 27, the tooth block re-engages with the annular toothed disc 25 to achieve fixation of the positioning ring 23, thereby stably installing the device at the feeding port of the reactor body 1.

[0055] After positioning is completed, the water pump 3 supplies water to the rotating assembly 4 through the flexible water pipe 31. The water flows into the closed ring formed by the transfer ring 41 and the sealing ring 42, and is further transported to the interior of the fan-shaped corrugated sleeve 46 through the connecting pipe 421. Under the action of water pressure, the fan-shaped corrugated sleeve 46 expands and drives the rotating plate 451 to rotate, thereby driving the ends of the small ultrasonic probe 6 and the liquid coating assembly 7 to open outward, and drive the ends of the small ultrasonic probe 6 and the liquid coating assembly 7 to abut against the inner wall of the reactor body 1 respectively, thereby realizing adaptive detection and positioning of reactors with different diameters;

[0056] When the volume inside the sector-shaped bellows sleeve 46 reaches a specified threshold, the water pressure inside the closed ring body formed by the intermediate ring 41 and the sealing ring 42 continues to increase, pushing the ball valve 48, compressing the second spring 482, and entering the columnar bellows sleeve 49 through the mounting tube 47. After water is injected into the columnar bellows sleeve 49, the compressed part of the columnar bellows sleeve 49 begins to stretch, and the columnar bellows sleeve 49 drives the rotating assembly 4 to move downward. In this process, the shaping rod 491 plays a role in supporting and shaping, ensuring that the intermediate ring 41 is properly positioned on the mounting plate 21. The sealing ring 42 moves downward vertically. Since the guide rail sleeve 44 of the driving ring 43 is slidably sleeved on the outer wall of the spring wire of the guide spring 52, when the sealing ring 42 moves downward following the transfer ring 41, the driving ring 43 and the guide rail sleeve 44 rotate under the guidance of the guide 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 assembly 7 to make a spiral motion on the inner wall of the reactor body 1 through the two rotating plates 451 until they move to the inner bottom surface of the reactor body 1, and the water pump 3 stops supplying water.

[0057] During the detection process, the small ultrasonic probe 6 is capable of measuring the double-layer thickness of the coating and the substrate on the inner wall of the reactor body 1. The small ultrasonic probe 6 adheres to the inner wall through point contact, adapting to the curved surface structure of the reactor and improving the detection accuracy. At the same time, the pressurized piston 75 inside the storage cylinder 71, under the action of the third spring 76, squeezes the glycerin used as a coupling agent through the connecting pipe 74 to the limit sleeve 721, and applies it to the inner wall of the reactor body 1 through the rolling ball 73. The glycerin acts as a liquid coupling agent and is applied to the path to be detected, reducing the wear of the small ultrasonic probe 6 and enhancing 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 via the Bluetooth transmission module to achieve accurate data collection.

[0058] 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 compression part and 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 release part of the spring wire, indirectly changing 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.

[0059] When the device inspection is completed, the operator can pull the pull ring at the top of the shaping rod 491 on the installation cylinder 47 to drive the ball valve 48 to open, and use the water pump 3 to quickly evacuate the water in the closed ring body, making it easier to disassemble the device and complete the measurement operation; at this point, the device is completed.

[0060] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed in the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A device for measuring the thickness of the coating on the inner wall of a reactor, comprising a reactor body (1), characterized in that: A positioning assembly (2) is fixedly installed at the feeding port on the top of the reactor body (1), and the positioning assembly (2) includes a mounting plate (21), a support frame (211) is welded and fixed at the center of the top surface of the mounting plate (21), and a water pump (3) is fixedly installed on the top surface of the support frame (211), and a rotating assembly (4) is installed on the bottom surface of the mounting plate (21), and the rotating assembly (4) is connected to the water pump (3) through a water pipe (31), and a guide assembly (5) is installed on the bottom surface of the support frame (211), and the bottom end of the guide assembly (5) passes through the mounting plate (21) and extends into the interior of the reactor body (1), and the rotating assembly (4) can rotate on the outer wall of the guide assembly (5), and the outer wall of the rotating assembly (4) is respectively installed with a small ultrasonic probe (6) and a coating assembly (7), and 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); The rotating assembly (4) comprises a transfer ring (41), the outer wall of the transfer ring (41) is coaxially rotatably connected to a sealing ring (42), the outer wall of the sealing ring (42) is symmetrically welded and fixed with two connecting pipes (421), the outer walls of the two connecting pipes (421) are jointly mounted with a driving ring (43), and the inner wall of the driving ring (43) is rotatably connected to a guide rail sleeve (44); Two mounting cylinders (47) are symmetrically mounted on the top surface of the transfer ring (41), and a ball valve (48) is slidably mounted on the inner wall of each of the two mounting cylinders (47). The outer walls of each of the two ball valves (48) are fixedly connected to a second spring (482). The top ends of the inner walls of the two mounting cylinders (47) are provided with a fixing bracket (471), and the center of the top surface of each of the two fixing brackets (471) is slidably plugged with a shaping rod (491); 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) pass through the bottom surface of the mounting plate (21) and extend to the outside of the reactor body (1). The top surfaces of the two mounting cylinders (47) are coaxially fixedly mounted with columnar corrugated sleeves (49), and the top surfaces of the two columnar corrugated sleeves (49) are fixedly mounted on the bottom surface of the mounting plate (21).

2. The device for measuring the thickness of the coating on the inner wall of a reactor according to claim 1, characterized in that: A plurality of sliding frames (212) are welded to the top surface of the mounting plate (21) at equal intervals, and a positioning plate (22) is slidably inserted into the inner walls 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 plate (21). A plurality of connecting rods (24) are hinged to the top surface of the positioning ring (23) at equal intervals, and one end of the plurality of connecting rods (24) away from the positioning ring (23) is hinged to the end of the plurality of positioning plates (22).

3. The device for measuring the thickness of the inner wall coating of a reactor according to claim 2, characterized in that: An annular toothed disc (25) is coaxially fixedly mounted on the top surface of the mounting disc (21), a positioning rod (26) is slidably mounted 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), and the tooth block is engaged with the annular toothed disc (25).

4. The device for measuring the thickness of the coating on the inner wall of a reactor according to claim 1, characterized in that: Two rotating clamping plates (45) are symmetrically mounted on the outer wall of the driving ring (43). The top ends of the two rotating clamping plates (45) are hingedly connected to rotating plates (451). The small ultrasonic probe (6) and the coating assembly (7) are respectively fixed to the ends of the two rotating plates (451) by bolts.

5. The device for measuring the thickness of the coating on the inner wall of a reactor according to claim 4, characterized in that: A sector-shaped corrugated sleeve (46) is installed between the two groups of rotating plates (451) and the rotating clamping plates (45). The ends of the two connecting pipes (421) away from the sealing ring (42) pass through the two rotating clamping plates (45) and are connected to the two sector-shaped corrugated sleeves (46).

6. The device for measuring the thickness of the coating on the inner wall of a reactor according to claim 1, characterized in that: The guide assembly (5) includes a slide bar (51) and a rotating cylinder (53). The top end of the slide bar (51) is coaxially fixedly mounted 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). The outer wall of the slide bar (51) is sleeved with a guide spring (52). The outer diameter of the guide 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 guide spring (52). An adjustment plate (531) is welded and fixed to the inner wall of the rotating cylinder (53). The adjustment plate (531) is inserted between the spring wires of the guide spring (52).

7. The device for measuring the thickness of the coating on the inner wall of a reactor according to claim 6, characterized in that: The coating liquid assembly (7) includes a storage cylinder (71), the inner wall of the storage cylinder (71) is slidably connected to a piston rod (72), the end of the piston rod (72) away from the storage cylinder (71) is provided with a limiting sleeve (721), the inner wall of the limiting sleeve (721) is rotatably mounted with a rolling ball (73), the interior of the storage cylinder (71) is slidably mounted with a pressurizing piston (75), and a third spring (76) is sandwiched between the pressurizing piston (75) and the piston rod (72).

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