Intelligent on-line testing device for corrosion performance of material and use method of intelligent on-line testing device

Abstract

The invention discloses an intelligent online material corrosion performance testing device and a using method, and belongs to the technical field of material corrosion performance testing, the intelligent online material corrosion performance testing device comprises a base, a reaction tank located at the top of the base, a cover plate covering the top of the reaction tank and a cylinder for controlling the cover plate to lift. Through a material fixing mechanism composed of an upper pressing disc, a hanging rod, an upper limiting groove, a collecting groove, a lower pressing disc, a lower limiting groove and an outer threaded sleeve, multiple sets of materials can be subjected to filling testing at the same time in the testing process, random errors are reduced, overall characteristics of the materials can be obtained easily, and the testing efficiency is improved. In addition, an ultrasonic probe is arranged at the top of the material fixing mechanism and located above the material fixing position, and meanwhile, a rotating mechanism composed of a motor, a first shaft rod, a main gear, a driven gear and a second shaft rod is utilized, so that the ultrasonic probe can be continuously controlled to rotate around the axis of the material in the testing process; and the average corrosion condition of the single surface of the material is continuously tested, so that the tested structure is more accurate.

Description

Technical Field

[0001] The present invention relates to an online testing device, in particular to an intelligent online testing device for material corrosion performance. The present invention also relates to a use method, in particular to a use method for the intelligent online testing device for material corrosion performance, and belongs to the technical field of material corrosion performance testing. Background Art

[0002] Material corrosion performance testing is a material test to detect the chemical or physical (or mechanical)-chemical damage process caused by the interaction between metals or other materials and the environment. Ultrasonic detection is a test method that uses the propagation characteristics of ultrasonic waves in materials to detect the thickness change of materials and then infer the degree of corrosion of materials. When ultrasonic waves propagate in materials, they will reflect and refract when they encounter the interface or defects of the materials. By measuring parameters such as the propagation time of ultrasonic waves and the intensity of the reflected signal, the thickness of the material can be calculated. When the material corrodes, its thickness will gradually decrease. By regularly measuring the thickness change of the material, the corrosion rate of the material can be obtained. It is a non-invasive detection method that will not cause damage to the material and can realize online non-destructive monitoring of the material. This method is suitable for materials of various shapes and structures, including pipes, containers, plates, etc., and can work in harsh environments such as high temperature and high pressure.

[0003] During the detection process, only fixed-point detection can be carried out, the test results are not comprehensive, and different materials cannot be tested at the same time. There is a lack of control data during detection. In addition, the ultrasonic detection method requires the application of coupling agent, which is inconvenient for manual operation and cannot ensure the amount of coupling agent added, affecting the accuracy of the test.

[0004] Therefore, an intelligent online testing device for material corrosion performance and a method for using the same are designed to optimize the above-mentioned problems. Summary of the invention

[0005] The main purpose of the present invention is to provide an intelligent online testing device for material corrosion performance and a method for using the same. Through the material fixing mechanism composed of an upper pressure plate, a suspension rod, an upper limit groove, a collecting groove, a lower pressure plate, a lower limit groove, and an external threaded sleeve, multiple groups of materials can be loaded and tested simultaneously during the test, thereby reducing random errors and facilitating the acquisition of the overall characteristics of the material. In addition, an ultrasonic probe is provided at the top of the material fixing mechanism and above the material fixing position. At the same time, a rotating mechanism composed of a motor, a first shaft rod, a main gear, a driven gear, and a second shaft rod can be used to continuously control the ultrasonic probe to rotate around the axis of the material during the test, continuously test the single-sided average corrosion condition of the material, and make the test structure more accurate. The top of the ultrasonic probe is provided with an elastic extrusion component consisting of a slide groove, a slide rod, a mounting plate, and a spring, which can ensure the contact effect between the ultrasonic probe and the material. In addition, the coupling agent is added by using a nozzle to improve the transmission efficiency of ultrasonic waves during the test. The coupling agent injection mechanism composed of a guide groove, annular groove, a catheter, a storage box, a sleeve, a feed pipe, a piston, a pull rod, a first gear, a second gear, and a rotating rod can automatically add the coupling agent in a quantitative manner through a linkage control method as the position of the ultrasonic probe changes during the test. On the one hand, it can ensure that there is sufficient coupling agent on the surface of the material to avoid the extrusion of the coupling agent due to the rotation of the ultrasonic probe. On the other hand, it can ensure that the coupling agent in the test area remains continuously clean, ensuring the transmission efficiency of the ultrasonic wave.

[0006] The purpose of the present invention can be achieved by adopting the following technical solutions: An intelligent online testing device for material corrosion performance comprises a base, a reaction pool located on the top of the base, a cover plate covering the top of the reaction pool and a cylinder for controlling the lifting of the cover plate, a material fixing mechanism is provided below the cover plate, an ultrasonic probe is provided below the cover plate and above the material fixing position, a nozzle is provided on the side of the ultrasonic probe, a rotating mechanism for controlling the ultrasonic probe to rotate around the material axis is installed on the cover plate, an ultrasonic detector is provided on the outer side of the top of the base, and a coupling agent injection mechanism connected to the nozzle is provided on the top of the cover plate.

[0007] Preferably: the material fixing mechanism includes an upper pressure plate, a hanging rod, an upper limit groove, a lower pressure plate, a lower limit groove and an external threaded sleeve, the upper pressure plate is horizontally arranged below the cover plate, the outer side of the top of the upper pressure plate is evenly and vertically installed with a hanging rod connected to the cover plate, the outer side of the upper pressure plate is evenly opened with upper limit grooves along the circumferential direction, the lower pressure plate is fittedly installed on the bottom of the upper pressure plate, the outer side of the lower pressure plate is circumferentially opened with a lower limit groove matching the upper limit groove, and an external threaded sleeve is threadedly installed at the middle position between the upper and lower pressure plates.

[0008] Preferably, the front cross-section of the upper limit groove is in a convex shape, the front cross-section of the lower limit groove is in an inverted convex shape, and the inner top surface of the upper limit groove and the bottom surface of the lower limit groove are both provided with sealing rings.

[0009] Preferably, a collecting groove is provided on the outer side of the top of the upper limit slot, and the collecting groove is sleeved on the outer side of the upper limit slot.

[0010] Preferably: the rotating mechanism includes a motor, a first shaft, a main gear, a driven gear and a second shaft, the motor is installed on the top of the cover, the output end of the motor is installed with the first shaft, the first shaft extends to the bottom of the cover, and the main gear is fixed on the first shaft, the outer side of the bottom of the cover is evenly rotated and installed with the second shaft, the bottom end of the second shaft is installed with a driven gear meshing with the main gear, the nozzle is fixed below the driven gear, and an elastic extrusion component is provided between the top of the ultrasonic probe and the driven gear.

[0011] Preferably, the bottom end of the first shaft extends to the bottom of the reaction tank, and a stirring rod is fixed to the bottom end of the first shaft.

[0012] Preferably: the elastic extrusion assembly includes a slide groove, a slide rod, a mounting plate and a spring, the slide groove is opened at the bottom of the driven gear, the slide rod is vertically slidably installed inside the slide groove, the bottom end of the slide rod is fixed with a mounting plate, the ultrasonic probe is fixed at the bottom of the mounting plate, and a spring is provided between the top of the mounting plate and the bottom of the driven gear.

[0013] Preferably: the coupling agent injection mechanism includes a guide groove, an annular groove, a conduit, a storage box, a sleeve, a feed pipe, a piston, a pull rod and a telescopic assembly, the annular groove is opened inside the cover plate, the second shaft rod passes through the center of the annular groove, the second shaft rod and the inside of the driven gear are provided with a guide groove that connects the annular groove with the nozzle, the outer side of the top of the cover plate is evenly provided with storage boxes along the circumferential direction, the outer side of the storage boxes are all installed with sleeves, a feed pipe is provided between the end of the sleeve and the storage box, a conduit is provided between the bottom of the sleeve and the annular groove, a piston is slidably installed inside the sleeve, a pull rod is provided on the outer side of the piston, and a telescopic assembly is provided at the end of the pull rod.

[0014] Preferably: the telescopic assembly includes a first gear, a second gear and a rotating rod, the first gear is fixed at the top end of the second shaft, the second gear is meshed with the outer side of the first gear and is rotatably connected with the cover plate, the outer side of the top of the second gear is rotatably installed with a rotating rod, and the rotating rod is fixed at the end of the pull rod.

[0015] The present invention also provides a method for using the intelligent online testing device for material corrosion performance, comprising the following steps: Step 1: Start the cylinder to control the cover plate to rise, lift the material fixing mechanism to the top of the reaction pool, and add the coupling agent to the inside of the storage box; Step 2: Remove the external threaded sleeve and separate the lower pressure plate from the upper pressure plate. Then place the material inside the lower limit groove. The bottom end of the lower limit groove and the bottom end of the material are at the same horizontal plane. Then align the top end of the material with the upper limit groove, fit the upper pressure plate with the lower pressure plate, and then install the external threaded sleeve on the upper and lower pressure plates to fix the material. During the fixing process of the material, an upward force will be provided to the ultrasonic probe, and the spring will be squeezed to ensure the fitting effect of the ultrasonic probe and the material. Step 3: Start the motor to drive the main gear and the driven gear to rotate. During the rotation of the driven gear, the second gear will be driven to rotate through the first gear. When the second gear rotates, the piston is pulled back and forth by the pull rod, and the coupling agent inside the storage box is injected into the inside of the nozzle through the conduit, the annular groove and the guide groove, and then discharged from the nozzle to the surface of the material. At the same time, the nozzle rotates with the driven gear, so that the surface of the material can be evenly coated; Step 4: Inject the corrosive liquid into the reaction tank to simulate the corrosive environment, then control the cover plate to move downward, sink the lower surface of the material into the corrosive liquid, and seal the reaction tank. At the same time, turn on the ultrasonic detector and use the ultrasonic probe to detect the thickness of the material. Step 5: During the test, the motor is started to keep the ultrasonic probe in a rotating state, and multiple points on the surface of the material are continuously tested online. In addition, part of the coupling agent will be squeezed out when the ultrasonic probe rotates, so the nozzle continues to slowly add a small amount of coupling agent to ensure that the coupling agent is sufficient, and the squeezed coupling agent flows into the collection tank for storage.

[0016] The beneficial effects of the present invention are: The present invention provides an intelligent online testing device for material corrosion performance and a method for using the same. The material fixing mechanism composed of an upper pressure plate, a suspension rod, an upper limit slot, a collecting slot, a lower pressure plate, a lower limit slot, and an external threaded sleeve can be used to simultaneously load and test multiple groups of materials during the test, thereby reducing random errors and helping to obtain the overall characteristics of the material. In addition, an ultrasonic probe is provided at the top of the material fixing mechanism and above the material fixing position. At the same time, a rotating mechanism composed of a motor, a first shaft rod, a main gear, a driven gear, and a second shaft rod can be used to continuously control the ultrasonic probe to rotate around the axis of the material during the test, continuously test the single-side average corrosion condition of the material, and make the test structure more accurate. By arranging an elastic extrusion assembly consisting of a slide groove, a slide rod, a mounting plate, and a spring on the top of the ultrasonic probe, the contact effect between the ultrasonic probe and the material can be ensured. In addition, the coupling agent is added by a nozzle, which improves the transmission efficiency of the ultrasonic wave during the test. The coupling agent injection mechanism composed of the guide groove, the annular groove, the catheter, the storage box, the sleeve, the feed tube, the piston, the pull rod, the first gear, the second gear and the rotating rod can automatically add the coupling agent in a quantitative manner through a linkage control method as the position of the ultrasonic probe changes during the test. On the one hand, it can ensure that there is sufficient coupling agent on the surface of the material to avoid the extrusion of the coupling agent due to the rotation of the ultrasonic probe. On the other hand, it can ensure that the coupling agent in the test area remains continuously clean, thereby ensuring the transmission efficiency of the ultrasonic wave. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front cross-sectional view of a preferred embodiment of an intelligent online testing device for material corrosion performance and a method for using the same according to the present invention; Figure 2 It is a cross-sectional view of a test state of a preferred embodiment of an intelligent online testing device for material corrosion performance and a method for using the same according to the present invention; Figure 3 It is a front view of a preferred embodiment of an intelligent online testing device for material corrosion performance and a method for using the same according to the present invention; Figure 4 A material fixing mechanism diagram of a preferred embodiment of an intelligent online testing device for material corrosion performance and a method for using the same in the present invention; Figure 5 It is a cross-sectional view of a cover plate of a preferred embodiment of an intelligent online testing device for material corrosion performance and a method for using the same in the present invention; Figure 6 It is a cross-sectional view of a driven gear of a preferred embodiment of an intelligent online testing device for material corrosion performance and a method for using the same in the present invention; Figure 7 This is a preferred embodiment of a material corrosion performance intelligent online testing device and a method of use of the present invention. Figure 5 Enlarged view of point A in the middle; Figure 8 This is a preferred embodiment of a material corrosion performance intelligent online testing device and a method of use of the present invention. Figure 5 Enlarged view of point B in the middle.

[0018] In the figure: 1. base; 2. reaction tank; 3. cylinder; 4. cover plate; 5. material fixing mechanism; 6. ultrasonic probe; 7. nozzle; 8. rotating mechanism; 9. ultrasonic detector; 10. coupling agent injection mechanism; 11. upper pressure plate; 12. suspension rod; 13. upper limit groove; 14. collecting groove; 15. lower pressure plate; 16. lower limit groove; 17. external threaded sleeve; 18. motor; 19. first shaft rod; 20. main gear; 21. driven gear; 22. second shaft rod; 23. stirring rod; 24. slide groove; 25. slide rod; 26. mounting plate; 27. spring; 28. guide groove; 29. ​​annular groove; 30. catheter; 31. storage box; 32. sleeve; 33. feed pipe; 34. piston; 35. pull rod; 36. first gear; 37. second gear; 38. rotating rod. DETAILED DESCRIPTION

[0019] In order to make the technical solution of the present invention more clear and specific to those skilled in the art, the present invention is further described in detail below in conjunction with embodiments and drawings, but the implementation manner of the present invention is not limited thereto.

[0020] like Figure 1-Figure 8 As shown, this embodiment provides an intelligent online testing device for corrosion performance of materials, including a base 1, a reaction pool 2 located on the top of the base 1, a cover plate 4 covering the top of the reaction pool 2, and a cylinder 3 for controlling the lifting of the cover plate 4, a material fixing mechanism 5 is provided below the cover plate 4, an ultrasonic probe 6 is provided below the cover plate 4 and above the material fixing position, a nozzle 7 is provided on the side of the ultrasonic probe 6, a rotating mechanism 8 for controlling the rotation of the ultrasonic probe 6 around the material axis is installed on the cover plate 4, an ultrasonic detector 9 is provided on the outer side of the top of the base 1, and a coupling agent injection mechanism 10 connected to the nozzle 7 is provided on the top of the cover plate 4.

[0021] The general working principle: when in use, first position the columnar material on the material fixing mechanism 5, and then inject the corrosive liquid into the reaction tank 2 to simulate the corrosive environment. In addition, if the material's resistance to seawater corrosion is to be detected, seawater can be directly used, and then the cover plate 4 is controlled to move downward to sink the lower surface of the material into the corrosive liquid, and the reaction tank 2 is sealed. At the same time, the ultrasonic detector 9 is turned on, and the thickness of the material is detected by the ultrasonic probe 6. The thickness of the material is calculated based on the propagation time of the ultrasonic wave in the material and the sound velocity of the material. For the test at room temperature, the formula h=vt / 2 (where h is the material thickness, v is the sound velocity of the ultrasonic wave in the material, and t is the propagation time of the ultrasonic wave in the material once) can be directly used for calculation. During the test, the rotating mechanism 8 is used to continuously control the ultrasonic probe 6 to rotate around the material axis to test the bottom of the material evenly. In addition, during the test , automatically add the coupling agent to ensure the transmission efficiency of the ultrasonic wave, the ultrasonic detector 9 detects the target according to the conventional operation, and after collecting the ultrasonic signal, converts it into a digital signal, and performs a series of data processing, such as filtering, amplification, feature extraction, etc., to obtain the final detection result data, which are usually stored in the internal storage medium of the ultrasonic detector 9 in a specific file format. The ultrasonic detector 9 has a satellite communication module and can be connected to an external satellite communication device, and the corresponding driver and configuration software are installed, and the ultrasonic detector 9 is connected to the satellite communication device. The satellite communication parameters of the ultrasonic detector 9, such as the satellite frequency band, communication protocol, data transmission rate, etc., are set through the configuration software, so that it can establish a connection with the satellite network. The ultrasonic detector 9 packages and encodes the processed detection result data according to the set communication protocol, and then sends the data to the satellite through the satellite communication module. After the satellite receives the signal, it amplifies and converts the signal, and then forwards it to the ground station. After the ground station receives the signal forwarded by the satellite, it demodulates and decodes the signal to restore the detection result data sent by the ultrasonic detector 9. The ground station will verify and correct the data to ensure the accuracy and integrity of the data, and then transmit the data to the server or data center of the satellite communication operator through the ground network. The mobile phone supports satellite communication function and has a built-in satellite communication module. The user needs to find "Satellite Connection" or similar options in the "Settings" of the mobile phone, and follow the prompts to search and connect to the satellite to establish a connection between the mobile phone and the satellite network. The server or data center of the satellite communication operator sends the test result data of the ultrasonic detector 9 to the mobile phone via the satellite link. After the mobile phone receives the data, it uses the corresponding application to parse and process the data, and displays the test results to the user in an intuitive form, such as text, images, charts, etc., so that the user can view the test results of the ultrasonic detector 9.

[0022] In this embodiment, the material fixing mechanism 5 includes an upper pressure plate 11, a hanging rod 12, an upper limit groove 13, a lower pressure plate 15, a lower limit groove 16 and an external threaded sleeve 17. The upper pressure plate 11 is horizontally arranged below the cover plate 4. The outer side of the top of the upper pressure plate 11 is evenly and vertically installed with a hanging rod 12 connected to the cover plate 4. The outer side of the upper pressure plate 11 is evenly provided with an upper limit groove 13 along the circumferential direction. The lower pressure plate 15 is fitted on the bottom of the upper pressure plate 11. The outer side of the lower pressure plate 15 is provided with a lower limit groove 16 that cooperates with the upper limit groove 13 along the circumferential direction. An external threaded sleeve 17 is threadedly installed at the middle position between the upper pressure plate 11 and the lower pressure plate 15.

[0023] Local working principle: When installing the material, remove the external threaded sleeve 17, and separate the lower pressure plate 15 from the upper pressure plate 11, then place the material inside the lower limit groove 16, the bottom end of the lower limit groove 16 and the bottom end of the material are at the same horizontal plane, and then align the top end of the material with the upper limit groove 13, fit the upper pressure plate 11 and the lower pressure plate 15, and then install the external threaded sleeve 17 on the upper pressure plate 11 and the lower pressure plate 15 to fix the material.

[0024] In this embodiment, the upper limit groove 13 has a convex cross-section, and the lower limit groove 16 has an inverted convex cross-section. The inner top surface of the upper limit groove 13 and the bottom surface of the lower limit groove 16 are both provided with sealing rings.

[0025] Local working principle: The shape formed by the bottom of the upper limit groove 13 and the lower limit groove 16 after being engaged is the same as the shape of the material, so the material can be stably positioned. In addition, the setting of the sealing ring can avoid corrosion at other positions of the material, thereby ensuring the accuracy of the test.

[0026] In this embodiment, a collecting groove 14 is formed on the outer side of the top of the upper limit groove 13 , and the collecting groove 14 is sleeved on the outer side of the upper limit groove 13 .

[0027] Partial working principle: When the ultrasonic probe 6 rotates, part of the coupling agent will be squeezed out, and the squeezed coupling agent will flow into the collecting tank 14 for storage.

[0028] In this embodiment, the rotating mechanism 8 includes a motor 18, a first shaft 19, a main gear 20, a driven gear 21 and a second shaft 22. The motor 18 is installed on the top of the cover 4. The first shaft 19 is installed at the output end of the motor 18. The first shaft 19 extends to the bottom of the cover 4, and the main gear 20 is fixed on the first shaft 19. The second shaft 22 is evenly rotated and installed on the outer side of the bottom of the cover 4. The bottom end of the second shaft 22 is installed with a driven gear 21 meshing with the main gear 20. The nozzle 7 is fixed below the driven gear 21, and an elastic extrusion component is provided between the top of the ultrasonic probe 6 and the driven gear 21.

[0029] Local working principle: When controlling the rotation of the ultrasonic probe 6, the starting motor 18 drives the main gear 20 to rotate, and the main gear 20 drives multiple sets of driven gears 21 to rotate. Therefore, the ultrasonic probe 6 at the bottom of the driven gear 21 will rotate around the axis of the material to measure multiple points of the material. The use of the nozzle 7 can also add the coupling agent during the rotation process.

[0030] In this embodiment, the bottom end of the first shaft 19 extends to the bottom of the reaction pool 2 , and a stirring rod 23 is fixed to the bottom end of the first shaft 19 .

[0031] Partial working principle: During the starting process of the motor 18, the stirring rod 23 can also be driven to rotate to mix the corrosion liquid evenly to ensure the corrosion effect.

[0032] In this embodiment, the elastic extrusion assembly includes a slide groove 24, a slide rod 25, a mounting plate 26 and a spring 27. The slide groove 24 is opened at the bottom of the driven gear 21. The slide rod 25 is vertically slidably installed inside the slide groove 24. The mounting plate 26 is fixed to the bottom end of the slide rod 25. The ultrasonic probe 6 is fixed to the bottom of the mounting plate 26. A spring 27 is provided between the top of the mounting plate 26 and the bottom of the driven gear 21.

[0033] Local working principle: During the installation of the material, since the ultrasonic probe 6 will enter the upper limit groove 13 in the initial state, the ultrasonic probe 6 will be pushed upward during the material fixing process and the spring 27 will be compressed. The spring 27 always provides downward pressure on the ultrasonic probe 6 to ensure the fitting effect with the material.

[0034] In this embodiment, the coupling agent injection mechanism 10 includes a guide groove 28, an annular groove 29, a conduit 30, a storage box 31, a sleeve 32, a feed pipe 33, a piston 34, a pull rod 35 and a telescopic assembly. The annular groove 29 is opened inside the cover plate 4, and the second shaft rod 22 passes through the center of the annular groove 29. The second shaft rod 22 and the driven gear 21 are provided with a guide groove 28 for connecting the annular groove 29 with the nozzle 7. The outer side of the top of the cover plate 4 is evenly provided with storage boxes 31 along the circumferential direction. The outer side of the storage box 31 is installed with sleeves 32. A feed pipe 33 is provided between the end of the sleeve 32 and the storage box 31. A conduit 30 is provided between the bottom of the sleeve 32 and the annular groove 29. A piston 34 is slidably installed inside the sleeve 32. A pull rod 35 is provided on the outer side of the piston 34, and a telescopic assembly is provided at the end of the pull rod 35.

[0035] Local working principle: During the process of applying the coupling agent, the telescopic assembly is used in conjunction with the pull rod 35 to control the piston 34 to slide inside the sleeve 32, and the coupling agent inside the storage box 31 is extracted into the inside of the sleeve 32. Then, as the piston 34 is reset, the coupling agent is injected into the inside of the nozzle 7 through the conduit 30, the annular groove 29 and the guide groove 28, and is discharged from the nozzle 7 to the surface of the material. At the same time, the nozzle 7 rotates with the driven gear 21, so that the surface of the material can be evenly coated.

[0036] In this embodiment, the telescopic assembly includes a first gear 36, a second gear 37 and a rotating rod 38. The first gear 36 is fixed to the top of the second shaft 22. The second gear 37 is meshed with the outer side of the first gear 36 and is rotatably connected to the cover plate 4. A rotating rod 38 is rotatably installed on the outer side of the top of the second gear 37, and the rotating rod 38 is fixed to the end of the pull rod 35.

[0037] Local working principle: during the rotation of the motor 18, the second shaft rod 22 on the driven gear 21 will be driven to rotate, the rotation of the second shaft rod 22 will drive the first gear 36 to rotate, the first gear 36 drives the second gear 37 to rotate, and when the second gear 37 rotates, the pull rod 35 is used to pull the piston 34 back and forth.

[0038] like Figure 1-Figure 8 As shown, this embodiment provides a method for using an intelligent online testing device for material corrosion performance as follows: Step 1: Start the cylinder 3 to control the rise of the cover plate 4, lift the material fixing mechanism 5 to the top of the reaction tank 2, and add the coupling agent into the interior of the storage box 31; Step 2: Remove the external threaded sleeve 17, and separate the lower pressure plate 15 from the upper pressure plate 11, and then place the material inside the lower limit groove 16, with the bottom end of the lower limit groove 16 and the bottom end of the material at the same horizontal plane, and then align the top of the material with the upper limit groove 13, fit the upper pressure plate 11 and the lower pressure plate 15, and then install the external threaded sleeve 17 on the upper pressure plate 11 and the lower pressure plate 15 to fix the material. During the fixing process of the material, an upward force will be provided to the ultrasonic probe 6, and the spring 27 will be squeezed to ensure the fitting effect of the ultrasonic probe 6 and the material; Step 3: Start the motor 18 to drive the main gear 20 and the driven gear 21 to rotate. During the rotation of the driven gear 21, the second gear 37 is driven to rotate through the first gear 36. When the second gear 37 rotates, the piston 34 is pulled back and forth by the pull rod 35, and the coupling agent in the storage box 31 is injected into the inside of the nozzle 7 through the conduit 30, the annular groove 29 and the guide groove 28, and discharged from the nozzle 7 to the surface of the material. At the same time, the nozzle 7 rotates with the driven gear 21, so that the surface of the material can be evenly coated; Step 4: Inject the corrosive liquid into the reaction tank 2 to simulate the corrosive environment, then control the cover plate 4 to move downward, sink the lower surface of the material into the corrosive liquid, and seal the reaction tank 2. At the same time, turn on the ultrasonic detector 9 and use the ultrasonic probe 6 to detect the thickness of the material; Step 5: During the test, the motor 18 is started to keep the ultrasonic probe 6 in a rotating state, and multiple points on the surface of the material are continuously tested online. In addition, part of the coupling agent will be squeezed out when the ultrasonic probe 6 rotates, so the nozzle 7 continues to slowly add a small amount of coupling agent to ensure that the coupling agent is sufficient, and the squeezed coupling agent flows into the collection tank 14 for storage.

[0039] The above description is only a further embodiment 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 solutions and concepts of the present invention within the scope disclosed by the present invention, which belong to the protection scope of the present invention.

Claims

1. An intelligent online testing device for material corrosion performance, comprising a base (1), a reaction pool (2) located on the top of the base (1), a cover plate (4) covering the top of the reaction pool (2), and a cylinder (3) for controlling the lifting of the cover plate (4), characterized in that: A material fixing mechanism (5) is provided below the cover plate (4); an ultrasonic probe (6) is provided below the cover plate (4) and above the material fixing position; a nozzle (7) is provided on the side of the ultrasonic probe (6); a rotating mechanism (8) for controlling the ultrasonic probe (6) to rotate around the material axis is installed on the cover plate (4); an ultrasonic detector (9) is provided on the outer side of the top of the base (1); and a coupling agent injection mechanism (10) which is in conduction with the nozzle (7) is provided on the top of the cover plate (4).

2. The intelligent online testing device for material corrosion performance according to claim 1 is characterized in that: The material fixing mechanism (5) comprises an upper pressure plate (11), a suspension rod (12), an upper limit groove (13), a lower pressure plate (15), a lower limit groove (16) and an external threaded sleeve (17). The upper pressure plate (11) is horizontally arranged below the cover plate (4). The suspension rod (12) connected to the cover plate (4) is evenly and vertically installed on the outer side of the top of the upper pressure plate (11). The upper limit groove (13) is evenly opened on the outer side of the upper pressure plate (11) along the circumferential direction. The lower pressure plate (15) is fittedly installed on the bottom of the upper pressure plate (11). The lower limit groove (16) cooperating with the upper limit groove (13) is opened on the outer side of the lower pressure plate (15) along the circumferential direction. The external threaded sleeve (17) is threadedly installed at the middle position between the upper pressure plate (11) and the lower pressure plate (15).

3. The intelligent online testing device for material corrosion performance according to claim 2 is characterized in that: The front cross-section of the upper limit groove (13) is in the shape of a convex character, and the front cross-section of the lower limit groove (16) is in the shape of an inverted convex character. The inner top surface of the upper limit groove (13) and the bottom surface of the lower limit groove (16) are both provided with sealing rings.

4. The intelligent online testing device for material corrosion performance according to claim 3 is characterized by: The outer side of the top of the upper limit slot (13) is provided with a collecting slot (14), and the collecting slot (14) is sleeved on the outside of the upper limit slot (13).

5. An intelligent online testing device for material corrosion performance according to any one of claims 1 to 4, characterized in that: The rotating mechanism (8) comprises a motor (18), a first shaft (19), a main gear (20), a driven gear (21) and a second shaft (22). The motor (18) is mounted on the top of the cover plate (4). The output end of the motor (18) is mounted with the first shaft (19). The first shaft (19) extends to the bottom of the cover plate (4). The main gear (20) is fixed on the first shaft (19). The outer side of the bottom of the cover plate (4) is evenly rotated and mounted with the second shaft (22). The bottom end of each second shaft (22) is mounted with a driven gear (21) meshing with the main gear (20). The nozzle (7) is fixed below the driven gear (21). An elastic extrusion component is provided between the top of the ultrasonic probe (6) and the driven gear (21).

6. The intelligent online testing device for material corrosion performance according to claim 5 is characterized by: The bottom end of the first shaft (19) extends to the bottom of the reaction pool (2), and a stirring rod (23) is fixed to the bottom end of the first shaft (19).

7. The intelligent online testing device for material corrosion performance according to claim 6 is characterized by: The elastic extrusion assembly comprises a slide groove (24), a slide rod (25), a mounting plate (26) and a spring (27); the slide groove (24) is provided at the bottom of the driven gear (21); the slide rod (25) is vertically slidably mounted inside the slide groove (24); the mounting plate (26) is fixed to the bottom end of the slide rod (25); the ultrasonic probe (6) is fixed to the bottom of the mounting plate (26); and a spring (27) is provided between the top of the mounting plate (26) and the bottom of the driven gear (21).

8. The intelligent online testing device for material corrosion performance according to claim 7 is characterized in that: The coupling agent injection mechanism (10) comprises a guide groove (28), an annular groove (29), a guide tube (30), a storage box (31), a sleeve (32), a feed pipe (33), a piston (34), a pull rod (35) and a telescopic assembly. The annular groove (29) is provided inside the cover plate (4). The second shaft (22) passes through the center of the annular groove (29). A guide groove for connecting the annular groove (29) with the nozzle (7) is provided inside the second shaft (22) and the driven gear (21). (28), storage boxes (31) are evenly arranged on the outer side of the top of the cover plate (4) along the circumferential direction, sleeves (32) are installed on the outer sides of the storage boxes (31), a feed pipe (33) is arranged between the end of the sleeve (32) and the storage box (31), a guide tube (30) is arranged between the bottom of the sleeve (32) and the annular groove (29), a piston (34) is slidably installed inside the sleeve (32), a pull rod (35) is arranged on the outer side of the piston (34), and a telescopic component is arranged at the end of the pull rod (35).

9. The intelligent online testing device for material corrosion performance according to claim 8, characterized in that: The telescopic assembly comprises a first gear (36), a second gear (37) and a rotating rod (38), wherein the first gear (36) is fixed to the top end of the second shaft (22), the second gear (37) is meshed with the outer side of the first gear (36) and is rotatably connected to the cover plate (4), and the rotating rod (38) is rotatably mounted on the outer side of the top of the second gear (37), and the rotating rod (38) is fixed to the end of the pull rod (35).

10. A method for using a material corrosion performance intelligent online testing device, based on the material corrosion performance intelligent online testing device according to claim 9, characterized in that: The steps include: Step 1: Start the cylinder (3) to control the rise of the cover plate (4), lift the material fixing mechanism (5) to the top of the reaction tank (2), and add the coupling agent into the interior of the storage box (31); Step 2: Remove the external threaded sleeve (17) and separate the lower pressure plate (15) from the upper pressure plate (11), then place the material inside the lower limit groove (16), with the bottom of the lower limit groove (16) and the bottom of the material located at the same level, and then align the top of the material with the upper limit groove (13), fit the upper pressure plate (11) and the lower pressure plate (15), and then install the external threaded sleeve (17) on the upper pressure plate (11) and the lower pressure plate (15) to fix the material. During the fixing process of the material, an upward force is provided to the ultrasonic probe (6), and the spring (27) is squeezed to ensure the fit between the ultrasonic probe (6) and the material. Step 3: Start the motor (18) to drive the main gear (20) and the driven gear (21) to rotate. During the rotation of the driven gear (21), the second gear (37) is driven to rotate via the first gear (36). When the second gear (37) rotates, the piston (34) is pulled back and forth by the pull rod (35), so that the coupling agent inside the storage box (31) is injected into the inside of the nozzle (7) through the conduit (30), the annular groove (29) and the guide groove (28), and then discharged from the nozzle (7) to the surface of the material. At the same time, the nozzle (7) rotates together with the driven gear (21), so that the surface of the material can be evenly coated. Step 4: injecting a corrosive liquid into the reaction pool (2) to simulate a corrosive environment, then controlling the cover plate (4) to move downward to sink the lower surface of the material into the corrosive liquid, and sealing the reaction pool (2). At the same time, turning on the ultrasonic detector (9) and using the ultrasonic probe (6) to detect the thickness of the material; Step 5: During the test, the motor (18) is started to keep the ultrasonic probe (6) in a rotating state, and multiple points on the surface of the material are continuously tested online. In addition, when the ultrasonic probe (6) rotates, part of the coupling agent will be squeezed out, so the nozzle (7) continues to slowly add a small amount of coupling agent to ensure that the coupling agent is sufficient, and the squeezed coupling agent flows into the collection tank (14) for storage.

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