Ultrasonic thickness measuring device and method for pipe fittings

Abstract

The present invention relates to the technical field of ultrasonic thickness measurement, and specifically to an ultrasonic thickness measurement device for pipe fittings, comprising a fixing plate, two snap frames symmetrically fixed on both sides of the bottom end of the fixing plate, and a limit box arranged at the top end of the fixing plate. The device is arranged in an inverted T-shaped frame body connected by a first pull rod, a second pull rod and a limit rod, and is matched with the snap frame, so that the device as a whole can be quickly and firmly installed on the T-shaped pipe. At the same time, in conjunction with the operation of the ultrasonic thickness measurement adjustment component, compared with the traditional manual point-by-point detection method, the ultrasonic thickness measurement probes at the three ends of the device can be synchronously aligned with the three key impact points of the pipeline, without the need for manual repeated adjustment of the probe position and angle, thereby fundamentally solving the problem of low detection efficiency. At the same time, the ultrasonic thickness measurement adjustment component can perform a quantitative automatic application function of multi-point coupling agent during detection operation, accurately control the amount used, and ensure that the detection data truly and accurately reflects the wear condition of the pipe wall.

Description

Technical Field

[0001] The present invention relates to the technical field of ultrasonic thickness measurement, in particular to a pipe ultrasonic thickness measurement device and a thickness measurement method. Background Art

[0002] The ultrasonic thickness gauge for steel pipes measures thickness based on the reflection principle of ultrasonic waves at the interfaces of different media. During operation, impurities on the surface of the steel pipe to be measured are first cleaned, and coupling agent is applied to ensure the propagation of ultrasonic waves. During measurement, the piezoelectric chip of the probe is stimulated by an electric pulse to emit ultrasonic waves, which are reflected back to the probe through the bottom surface of the steel pipe and converted into electrical signals for transmission to the host. The host processes the signal and calculates the thickness through a formula based on the ultrasonic propagation time and the sound velocity of the material, and displays it.

[0003] When some existing T-joint steel pipes are used to transport media, when the media enters the dual channels from the single channel, due to the sudden change in fluid direction, the high-speed flowing media has a large kinetic energy and will directly impact the inner wall of the pipe on one side of the dual channel. After colliding with the pipe wall, the impacted medium will be reflected back to the diagonally opposite sides of the inner wall of the pipe on that side due to energy reflection and fluid mechanics characteristics. Under the long-term impact of the medium, the pipe walls at these three specific positions will be continuously eroded and gradually worn.

[0004] At present, the pipe wall thickness detection at these three impact points is mainly carried out by manual handheld ultrasonic detection instruments. This single-point one-by-one detection method is cumbersome to operate, consumes a lot of time and manpower costs, and results in extremely low detection efficiency, which is difficult to meet the needs of large-scale pipeline detection. In addition, for some overhead medium-transporting steel pipes, inspectors need to use climbing equipment to climb to the height of the pipeline to perform inspection operations. In a high-altitude environment, inspectors not only face the risk of falling from a height, but also need to accurately operate the probe to fit the special-shaped T-joint surface under unstable working conditions. This places extremely high demands on the physical fitness and operating skills of the inspectors, and also increases the safety hazards in the detection process. Moreover, since manual detection cannot achieve simultaneous detection of the three impact points, it is difficult to fully and timely grasp the wear condition of the pipeline, which may miss the best time for repair and maintenance, further exacerbating the safety risks of the pipeline.

[0005] In summary, the existing impact point detection at the T-joint of the medium conveying steel pipe has problems such as complex operation, low efficiency, poor safety and inability to synchronize detection due to the special-shaped structure of the pipeline, which seriously restricts the development of pipeline detection work and the safety of pipeline operation. Summary of the Invention

[0006] The purpose of the present invention is to provide an ultrasonic thickness measurement device and method for pipe fittings to solve the problems of impact point detection at T-joints of existing medium-transporting steel pipes proposed in the above background technology, which are complex operation, low efficiency, poor safety and inability to synchronize detection due to the special-shaped structure of the pipeline.

[0007] The top end face of said sliding panel also is provided with an interlocking structure, and the interlocking structures are designed so that the two sliding panels can be connected as soon as possible with a up-down knob.

[0008] Furthermore, a connecting frame is longitudinally fixedly installed on one side of the bottom end of the second pull rod and one side of the bottom end of the two ends of the first pull rod, and the bottom end of the connecting frame is fixedly installed on the top of the interference box on the corresponding side. The connection between the first pull rod, the second pull rod and the limit rod is an inverted T-shaped arrangement when viewed from above, and a reset spring is provided through the outside of each limit rod, and the two ends of the reset spring of one group of the limit rods are respectively installed on one side of the limit box and the second pull rod, and the two ends of the other group of the limit rods are respectively installed on one side of the limit box and the first pull rod.

[0009] Furthermore, the liquid injection assembly includes two double-sided electromagnets and two piston plates, the two double-sided electromagnets are symmetrically fixedly installed in the middle position inside the top of the limit box, the two piston plates are respectively fixed to the outside of one end of two groups of symmetrically arranged limit rods located inside the limit box, and iron sheets are embedded on the outside of one side of the two piston plates close to the double-sided electromagnets. A liquid storage tank is fixedly installed on the outside of one side of the limit box, and a one-way liquid inlet valve tube is fixed through the bottom end of the liquid storage tank, and the output end of the one-way liquid inlet valve tube is fixedly installed through the inside of one side of the limit box close to the middle position.

[0010] Furthermore, a one-way liquid discharge valve tube is fixed through the top of the resistance box, and the input end of the one-way liquid discharge valve tube is fixedly installed inside the top side of the limit box. A piston block is slidingly sealed and installed inside the side of the resistance box close to the one-way liquid discharge valve tube. A compression spring is connected and fixed between the piston block and the inner wall of one side of the resistance box. A liquid discharge port is horizontally penetrated on the side of the resistance box away from the piston block, and a trigger assembly is provided on the side of the resistance box close to the liquid discharge port.

[0011] Furthermore, the trigger assembly includes a rotating shaft, a limit frame and a sealing plate, the rotating shaft rotates horizontally and passes through the seal to be installed inside one side of the interference box, the limit frame is fixedly installed on the outside of one side of the rotating shaft, the sealing plate is fixedly installed on the outside of the side of the limit frame away from the rotating shaft, one side of the sealing plate is sealed on the side of the discharge port, and a limit gear is fixedly installed on the rotating through end of one side of the rotating shaft, and a limit block is fixedly installed on the bottom end of the interference box close to the limit gear, and a rack is installed in the internal horizontal sliding engagement of the limit block, and one tooth end of the rack is meshed with one side of the limit gear, and a interference block is fixedly installed on the side of the rack away from the limit gear, and a positioning block is fixedly installed on the outside of the side of the interference box close to the limit gear, and a interference spring is connected and fixed between the positioning block and the outside of one side of the rack.

[0012] Furthermore, a sliding seat is fixedly installed on the outside of one side of the resistance box, and an ultrasonic thickness measuring probe is installed on the inside of the sliding seat in a sliding engagement manner. A limiting ring is fixed on the outside of one end of the ultrasonic thickness measuring probe, and a plurality of resistance springs 2 are fixedly connected between the limiting ring and the outside of one side of the sliding seat.

[0013] Furthermore, the intermittent shifting assembly includes a missing gear plate and a positioning gear, the missing gear plate is rotatably mounted on the outside of the top side of the fixed plate, the positioning gear is rotatably mounted on the outside of the top side of the fixed plate near the bottom end of the limit box, the snap frame is fixedly mounted with a fixing frame near the top side of the missing gear plate, a low-speed motor is fixedly mounted inside the fixing frame, and the output end of the low-speed motor is fixed to the middle position of the top end of the missing gear plate.

[0014] Furthermore, a limiting column is fixedly installed at the edge of one side of the top of the positioning gear, and a positioning rod is provided at the top of the limiting column. The positioning rod is arranged in a cross shape when viewed from above, and an auxiliary block is fixedly installed at the top of one side of the fixing plate close to the positioning rod. One end of the positioning rod is installed inside one side of the auxiliary block through a sliding engagement.

[0015] Furthermore, a limiting groove is set inside the middle position of the positioning rod, and the limiting column is slidably fitted inside one side of the limiting groove. The two end portions of the positioning rod are fixedly installed on the outside of the bottom end of the limiting box through brackets.

[0016] The present invention also provides a thickness measuring method of a pipe ultrasonic thickness measuring device, comprising the following steps:

[0017] S1: First, the ultrasonic thickness measuring device is fixed to the corresponding T-shaped medium conveying steel pipe through the snap bracket to complete the positioning. When testing is required, the ultrasonic thickness measuring adjustment component is triggered to drive the three ultrasonic thickness measuring probes on both sides to move vertically in the center, contacting and fitting at the three key impact points of the medium conveying steel pipe, and then starting the synchronous ultrasonic thickness measurement operation;

[0018] S2: When the ultrasonic thickness gauge adjustment component is in operation, it drives the injection component to operate, thereby squeezing a certain amount of coupling agent into the interior of each contact box to complete the coupling agent supply. When the three ultrasonic thickness gauge probes contact and fit the medium conveying steel pipe, the component is triggered to operate, thereby automatically squeezing the quantitatively delivered coupling agent to adhere to the detection point of the medium conveying steel pipe;

[0019] S3: During ultrasonic thickness measurement, the intermittent shift assembly is operated to drive the three ultrasonic thickness measurement probes to perform intermittent movement of a small distance at three key impact points. This allows for multiple measurements at small intervals at each impact point, and the average measurement value is taken to ensure accurate measurement results.

[0020] S4: After the overall measurement is completed, the ultrasonic thickness measurement adjustment component can be controlled to be powered off and reset, so that the ultrasonic thickness measurement probe is separated from the surface of the medium conveying steel pipe to avoid long-term contact friction loss.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] This device utilizes an inverted T-shaped frame connected by pull rods 1, 2, and a limit rod, along with a snap-on bracket. This allows for quick and secure installation on T-shaped pipes. Combined with the operation of the ultrasonic thickness gauge adjustment assembly, the three ultrasonic thickness gauge probes at the ends of this device can simultaneously align with the three key impact points of the pipe, compared to traditional manual point-by-point testing. This eliminates the need for repeated manual adjustment of probe position and angle, fundamentally addressing the problem of low testing efficiency. Furthermore, the ultrasonic thickness gauge adjustment assembly automatically applies quantitative coupling agent to multiple points during testing, precisely controlling the amount used and significantly reducing ultrasonic transmission energy loss caused by poor coupling. This allows the test data to truly and accurately reflect pipe wall wear, providing a scientific and reliable basis for pipeline maintenance while avoiding the inefficiency of manual coupling agent application. This effectively meets the needs of rapid testing on large-scale pipelines. Furthermore, unlike traditional overhead pipeline testing, inspectors no longer need to climb to heights and operate in unstable environments, improving overall safety.

[0023] Through the setting and operation of the intermittent shift component, the whole can, when in use, through the automated intermittent small-distance movement mechanism, accurately and stably drive the ultrasonic thickness gauge probe to move according to the pre-set measurement point distribution, without the need for frequent manual adjustment of the probe position and angle, greatly improving the measurement efficiency. At the same time, its precise displacement control can ensure that the probe can accurately reach the measurement point every time, avoiding measurement deviations caused by improper manual operation, significantly improving the accuracy and consistency of data acquisition, performing multiple measurements at small intervals on each impact point, and taking the average measurement value to ensure accurate measurement results, providing reliable guarantees for comprehensive and accurate assessment of the steel pipe wall thickness condition. In addition, this automated movement method can effectively reduce the workload of operators and reduce interference from human factors. It is especially suitable for large-scale, repetitive steel pipe inspection tasks, greatly enhancing the standardization and standardization of inspection work, and is of great significance to improving the overall efficiency of ultrasonic thickness measurement of steel pipes. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0025] Figure 2 This is a three-dimensional schematic diagram of the installation of the present invention as a whole and a T-shaped steel pipe;

[0026] Figure 3 This is a schematic diagram of a partially cutaway three-dimensional structure of the installation of the limit box and the double-sided electromagnet of the present invention;

[0027] Figure 4 For the present invention Figure 3 A in the middle is an enlarged structural diagram;

[0028] Figure 5 This is a schematic diagram of the three-dimensional structure of the installation of the friction box and the sliding seat of the present invention;

[0029] Figure 6 For the present invention Figure 5 The enlarged structural diagram at B in the middle;

[0030] Figure 7 This is a schematic diagram of the cross-sectional structure of the installation side of the friction box and the piston block of the present invention;

[0031] Figure 8 This is a schematic diagram of the three-dimensional structure of the gear plate and the positioning gear installed in the present invention;

[0032] Figure 9 For the present invention Figure 8 The enlarged structural diagram at C in the middle;

[0033] Figure 10 It is a schematic diagram of the top view of the structure of the present invention as a whole installed with the T-shaped steel pipe.

[0034] In the accompanying drawings, the parts represented by each reference numeral are as follows: 1. Clip frame; 2. Fixing plate; 3. Limit box; 4. Slider; 5. Slide; 6. Double-sided electromagnet; 7. Piston plate; 8. Iron sheet; 9. Limit rod; 10. Pull rod 1; 11. Pull rod 2; 12. Return spring; 13. Connecting frame; 14. Contact box; 15. One-way liquid inlet valve pipe; 16. Liquid storage tank; 17. One-way liquid discharge valve pipe; 18. Liquid discharge port; 19. Piston block; 20. Compression spring ; 21. Rotating shaft; 22. Limiting frame; 23. Sealing plate; 24. Limiting block; 25. Rack; 26. Interference block; 27. Limiting gear; 28. Positioning block; 29. ​​Interference spring 1; 30. Sliding seat; 31. Ultrasonic thickness probe; 32. Limiting ring; 33. Interference spring 2; 34. Fixed frame; 35. Low-speed motor; 36. Gear plate; 37. Positioning gear; 38. Limiting column; 39. Positioning rod; 40. Limiting slot; 41. Auxiliary block. DETAILED DESCRIPTION

[0035] 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.

[0036] Example 1: Please refer to Figure 1 - Figure 7 The top of the limit box 3 is provided with an ultrasonic thickness measuring device. The limit box 3 has two movable parts, and the movable part has two movable parts. The movable part has a bottom end and a bottom end. The movable part has a bottom end and a bottom end.

[0037] A connecting frame 13 is longitudinally fixedly installed on one side of the bottom end of the pull rod 2 11 and one side of the bottom end of the two sides of the pull rod 1 10. The bottom end of the connecting frame 13 is fixedly installed on the top of the interference box 14 on the corresponding side. The connection between the pull rod 10, the pull rod 2 11 and the limit rod 9 is an inverted T-shaped arrangement when viewed from above. A reset spring 12 is penetrated and sleeved on the outside of each limit rod 9. The two ends of the external reset spring 12 of one group of limit rods 9 are respectively installed on one side of the limit box 3 and the pull rod 2 11, and the two ends of the external reset spring 12 of the other group of limit rods 9 are respectively installed on one side of the limit box 3 and the pull rod 10.

[0038] The liquid injection assembly includes two double-sided electromagnets 6 and two piston plates 7. The two double-sided electromagnets 6 are symmetrically fixed in the middle position inside the top of the limit box 3. The two piston plates 7 are respectively fixed to the outside of one end of two groups of symmetrically arranged limit rods 9 located inside the limit box 3. The outside of the two piston plates 7 close to the double-sided electromagnet 6 is embedded with an iron sheet 8. A liquid storage tank 16 is fixedly installed on the outside of one side of the limit box 3. A one-way liquid inlet valve pipe 15 is fixed through the bottom end of the liquid storage tank 16, and the output end of the one-way liquid inlet valve pipe 15 is fixedly installed inside the limit box 3 near the middle position.

[0039] A one-way liquid discharge valve tube 17 is fixed through the top of the resistance box 14, and the input end of the one-way liquid discharge valve tube 17 is fixedly installed inside the top side of the limit box 3. A piston block 19 is installed in a sliding seal inside the side of the resistance box 14 close to the one-way liquid discharge valve tube 17. A compression spring 20 is connected and fixed between the piston block 19 and the inner wall of one side of the resistance box 14. A liquid discharge port 18 is horizontally penetrated on the side of the resistance box 14 away from the piston block 19, and a trigger component is provided on the side of the resistance box 14 close to the liquid discharge port 18.

[0040] The trigger assembly includes a rotating shaft 21, a limiting frame 22 and a sealing plate 23. The rotating shaft 21 rotates horizontally and passes through the sealing installation on one side of the conflict box 14. The limiting frame 22 is fixedly installed on the outside of one side of the rotating shaft 21. The sealing plate 23 is fixedly installed on the outside of the side of the limiting frame 22 away from the rotating shaft 21. One side of the sealing plate 23 is sealed against the side of the discharge port 18. A limiting gear 27 is fixedly installed on the end rotating through one side of the rotating shaft 21. A limiting block 24 is fixedly installed on the bottom end of the conflict box 14 close to the limiting gear 27. A rack 25 is installed on the inner side of the limiting block 24 for horizontal sliding engagement. One side tooth end of the rack 25 is meshed with one side of the limiting gear 27. A conflict block 26 is fixedly installed on the side of the rack 25 away from the limiting gear 27. A positioning block 28 is fixedly installed on the outside of the side of the conflict box 14 close to the limiting gear 27. A conflict spring 29 is connected and fixed between the positioning block 28 and the outside of one side of the rack 25.

[0041] A sliding seat 30 is fixedly installed on the outside of one side of the resistance box 14, and an ultrasonic thickness measuring probe 31 is installed in the internal sliding engagement of the sliding seat 30. A limiting ring 32 is fixed on the outside of one end of the ultrasonic thickness measuring probe 31, and a plurality of resistance springs 33 are fixed and connected around the limiting ring 32 and the outside of one side of the sliding seat 30.

[0042] Specifically, by setting the second contact spring 33 between the limit ring 32 and the sliding seat 30, the ultrasonic thickness measuring probe 31 can always contact the outer wall of the steel pipe during testing, ensuring the accuracy of subsequent test results.

[0043] In this embodiment, when the device is used, the ultrasonic thickness measuring probe 31 is first connected to the background control system through the existing wireless data transmission module to facilitate subsequent detection and data transmission. Then, the clamping frame 1 on both sides of the bottom end of the fixing plate 2 is directly pressed against the T-shaped medium conveying steel pipe to complete the positioning. When it is necessary to detect the wall thickness of the three key impact points on the T-shaped medium conveying steel pipe ( Figure 10 The black arrows in the figure represent these three key impact points). First, the double-sided electromagnet 6 is controlled by the existing controller to be energized to generate an adsorption force. The adsorption of the double-sided electromagnet 6 drives the piston plates 7 installed with sliding seals on both sides to move toward the center. When the piston plates 7 on both sides move in the center, they will drive the fixed limit rods 9, pull rod 10, pull rod 2 11 on both sides and the connecting frame 13 and the resistance box 14 at the bottom to move in the center synchronously, so that the ultrasonic thickness measuring probe 31 on one side of the resistance box 14 moves and resists the impact point of the pre-cleaned medium conveying steel pipe, completing the alignment resistance. Compared with the traditional manual point-by-point detection method, the ultrasonic thickness measuring probes 31 at the three ends of this device can be synchronously aligned with the three key impact points of the pipeline, without the need for manual repeated adjustment of the probe position and angle, thereby solving the problem of low detection efficiency from the root.

[0044] It should also be noted that when the piston plate 7 is attracted by the double-sided electromagnet 6 and moves in the center, the piston plates 7 on both sides move inside the limit box 3 to form an extrusion force. At this time, the quantitative coupling agent extracted by the negative pressure between the two piston plates 7 will be squeezed into the inside of the one-way liquid discharge valve tube 17. At the same time, when the entire device starts to be used, it is necessary to achieve repeated squeezing or pre-filling to ensure that a certain amount of coupling agent has been stored in the one-way liquid discharge valve tube 17 and the inside of the resistance box 14, so as to ensure that the coupling agent can be discharged normally during subsequent single squeezing. When a certain amount of coupling agent enters the inside of the resistance box 14 through the one-way liquid discharge valve tube 17, since the discharge port 18 on one side of the resistance box 14 is in a closed state, the coupling agent entering at this time will generate a certain pressure to push the piston block 19 on one side of the resistance box 14 to move (such as Figure 7As shown), at the same time, the compression spring 20 is compressed to provide a certain rebound extrusion force for subsequent discharge. When the ultrasonic thickness measuring probe 31 contacts the detection outer wall of the steel pipe, the interference block 26 on one side of the rack 25 will interfere with the detection outer wall of the steel pipe, causing the rack 25 to move and drive the limit gear 27 to rotate. The rotation of the limit gear 27 drives the internal rotating shaft 21 to rotate. The rotation of the rotating shaft 21 drives the limit frame 22 and the sealing plate 23 on one side to rotate synchronously by a certain angle, so that the discharge port 18 is in an open state. At the same time, the discharge port 18 is in contact with the detection outer wall of the steel pipe. At this time, the compression spring 20 originally compressed inside drives the piston block 19 The device can automatically apply the quantitative coupling agent to multiple points during use, accurately controlling the amount of coupling agent used, greatly reducing the loss of ultrasonic propagation energy caused by poor coupling effect, and making the detection data truly and accurately reflect the wear condition of the pipe wall. This provides a scientific and reliable basis for pipeline maintenance, while avoiding the low efficiency of manual application of coupling agent. It can efficiently meet the needs of rapid detection of large-scale pipelines. At the same time, in traditional overhead pipeline detection, the detection personnel do not need to climb to a high altitude and operate in an unstable working environment, thereby improving overall safety.

[0045] Example 2: Please refer to Figure 8 - Figure 10 This embodiment further illustrates the first embodiment, wherein an intermittent shifting component is provided at the bottom end of the limit box 3 .

[0046] The intermittent shifting assembly includes a missing gear plate 36 and a positioning gear 37. The missing gear plate 36 is rotatably mounted on the outside of the top side of the fixed plate 2, and the positioning gear 37 is rotatably mounted on the outside of the top side of the fixed plate 2 near the bottom end of the limit box 3. The snap frame 1 is fixedly mounted with a fixing frame 34 on the top side near the missing gear plate 36. A low-speed motor 35 is fixedly mounted inside the fixing frame 34, and the output end of the low-speed motor 35 is fixed to the middle position of the top of the missing gear plate 36.

[0047] A limiting column 38 is fixedly installed at the edge of one side of the top of the positioning gear 37, and a positioning rod 39 is provided at the top of the limiting column 38. The positioning rod 39 is arranged in a cross shape when viewed from above, and an auxiliary block 41 is fixedly installed at the top of one side of the fixing plate 2 close to the positioning rod 39. One end of the positioning rod 39 passes through and is slidably engaged and installed inside one side of the auxiliary block 41.

[0048] A limiting groove 40 is provided inside the middle position of the positioning rod 39, and the limiting column 38 is slidably fitted inside one side of the limiting groove 40. The ends of both sides of the positioning rod 39 are fixedly installed on the outside of the bottom end of the limiting box 3 through brackets.

[0049] In this embodiment, after the coupling agent is applied, ultrasonic thickness measurement is started. First, the low-speed motor 35 is controlled to start rotating. The rotation of the output shaft of the low-speed motor 35 drives the gear plate 36 to start rotating slowly. When the gear plate 36 rotates one circle, it drives the positioning gear 37 engaged on one side to rotate a certain angle. When the positioning gear 37 rotates a certain angle, it drives the external limiting column 38 to rotate a certain angle synchronously. The limiting column 38 is connected to the internal limiting groove 40 of the positioning rod 39 through sliding fit, so that the limiting column 38 After rotating a certain angle, the positioning rod 39 will be driven to move a certain distance horizontally, thereby driving the top limit box 3 to move a certain distance synchronously, thereby driving the limit rod 9, the pull rod 1 10, the pull rod 2 11, the connecting frame 13, the contact box 14 and the ultrasonic thickness measuring probe 31 to move a short distance synchronously, so that the ultrasonic thickness measuring probe 31 reaches the coupling agent application area and starts to detect. According to the above work flow, after the low-speed motor 35 is controlled to rotate several times, the three ultrasonic thickness measuring probes 31 can be driven to perform multiple measurements of each impact point with small spacing (such as Figure 10 As shown by the vertical dashed line in the middle, the ultrasonic thickness gauge probe 31 is capable of performing stable movement testing at equal intervals. The measurement average is then taken to ensure accurate measurement results, providing a reliable guarantee for comprehensive and accurate assessment of the steel pipe wall thickness condition. When in use, the device, through an automated intermittent small-distance movement mechanism, can accurately and stably drive the ultrasonic thickness gauge probe 31 to move according to the pre-set measurement point distribution, eliminating the need for frequent manual adjustment of the probe position and angle, greatly improving measurement efficiency. At the same time, its precise displacement control ensures that the probe accurately reaches the measurement point every time, avoiding measurement deviations caused by improper manual operation, significantly improving the accuracy and consistency of data acquisition, and providing a reliable guarantee for comprehensive and accurate assessment of the steel pipe wall thickness condition. In addition, this automated movement method can effectively reduce the workload of operators and reduce human interference. It is particularly suitable for large-scale, repetitive steel pipe inspection tasks, greatly enhancing the standardization and compliance of inspection work, and is of great significance to improving the overall effectiveness of ultrasonic thickness measurement of steel pipes.

[0050] It should also be noted that when the overall inspection is completed, the low-speed motor 35 is controlled to rotate several times again to drive the limit rod 9, pull rod 1 10, pull rod 2 11, connecting frame 13, contact box 14 and ultrasonic thickness measuring probe 31 to reset to the initial position, providing a position basis for the subsequent secondary inspection. At the same time, the double-sided electromagnet 6 is controlled to be powered off and loses its adsorption force. At this time, the originally compressed reset springs 12 on both sides drive the piston plate 7, limit rod 9, pull rod 1 10, pull rod 2 11, connecting frame 13, contact box 14 and ultrasonic thickness measuring probe 31 to move back and reset, so that the ultrasonic thickness measuring probe 31 is separated from the surface of the medium conveying steel pipe to avoid long-term contact friction loss.

[0051] It should also be noted that when the piston plate 7 expands and resets, a negative pressure suction force is generated inside the limit box 3. Through the connection between the one-way liquid inlet valve tube 15 and the inside of the liquid storage tank 16, a certain amount of coupling agent inside the liquid storage tank 16 is sucked into the inside of the limit box 3, providing a dosage basis for subsequent secondary detection and ensuring the stability of the overall operation.

[0052] It should also be noted that when the ultrasonic thickness measuring probe 31 is separated from the surface of the medium conveying steel pipe, the resistance block 26 on one side is also separated from the surface of the medium conveying steel pipe. At this time, the resistance spring 29 compressed on one side drives the rack 25 to move back, thereby driving the limit gear 27, the rotating shaft 21, the limit frame 22 and the sealing plate 23 to rotate and reset, blocking the drain port 18.

[0053] The present invention also provides a thickness measuring method of a pipe ultrasonic thickness measuring device, comprising the following steps:

[0054] S1: First, the ultrasonic thickness measuring device is fixed to the corresponding T-shaped medium conveying steel pipe by the snap bracket 1 to complete the positioning. When testing is required, the ultrasonic thickness measuring adjustment component is triggered to drive the three ultrasonic thickness measuring probes 31 on both sides to move vertically in the center, contacting and fitting at the three key impact points of the medium conveying steel pipe, and starting the synchronous ultrasonic thickness measurement operation;

[0055] S2: When the ultrasonic thickness measurement adjustment component is in operation, it drives the injection component to operate, thereby squeezing a certain amount of coupling agent into the interior of each contact box 14, completing the coupling agent supply. When the three ultrasonic thickness measurement probes 31 contact and fit the medium conveying steel pipe, the trigger component is activated, thereby automatically squeezing the quantitatively delivered coupling agent to adhere to the detection point of the medium conveying steel pipe;

[0056] S3: During ultrasonic thickness measurement, the intermittent shift assembly is operated to drive the three ultrasonic thickness measuring probes 31 to perform intermittent movement at a small distance at three key impact points, thereby performing multiple measurements at a small interval at each impact point and taking the average value of the measurements to ensure accurate measurement results;

[0057] S4: After the overall measurement is completed, the ultrasonic thickness measurement adjustment component can be controlled to be powered off and reset, so that the ultrasonic thickness measurement probe 31 is separated from the surface of the medium conveying steel pipe to avoid long-term contact friction loss.

[0058] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0059] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A pipe ultrasonic thickness measuring device, comprising a fixing plate (2), two snap-on frames (1) symmetrically fixed on both sides of the bottom end of the fixing plate (2), and a limit box (3) arranged on the top end of the fixing plate (2), characterized in that: Two sliders (4) are symmetrically fixedly installed on both sides of the bottom end of the limit box (3); a slide groove (5) is embedded in the top of the fixed plate (2) near the two sliders (4); the two sliders (4) are slidably engaged and installed in the slide grooves (5) on the corresponding sides; an ultrasonic thickness measurement adjustment component is provided at the top end of the limit box (3); and an intermittent shifting component is provided at the bottom end of the limit box (3); The ultrasonic thickness measurement adjustment component includes two groups of symmetrically arranged limit rods (9), pull rod one (10) and pull rod two (11), the two groups of symmetrically arranged limit rods (9) are horizontally penetrated and slidably installed inside the two sides of the limit box (3), the pull rod one (10) is horizontally fixedly installed on the outside of one side of one group of limit rods (9), and the pull rod two (11) is horizontally fixedly installed on the outside of one side of the other group of limit rods (9), and the bottom side of the pull rod two (11) and the bottom side of the ends of both sides of the pull rod one (10) are both provided with a resistance box (14), and the interior of the limit box (3) is provided with a liquid injection component; The pull rod 1 (10), the pull rod 2 (11) and the limit rod (9) are connected in an inverted T-shaped arrangement when viewed from above. A reset spring (12) is provided on the outside of each limit rod (9). The two ends of the reset spring (12) on the outside of one group of limit rods (9) are respectively installed on one side of the limit box (3) and the pull rod 2 (11), and the two ends of the reset spring (12) on the outside of the other group of limit rods (9) are respectively installed on one side of the limit box (3) and the pull rod 1 (10); A sliding seat (30) is fixedly installed on the outside of one side of the resistance box (14), and an ultrasonic thickness measuring probe (31) is installed in the internal sliding engagement of the sliding seat (30). The ultrasonic thickness measuring adjustment component drives the pull rod 2 (11) and the pull rod 1 (10) to move laterally, so that the bottom end of the pull rod 2 (11) resists the ultrasonic thickness measuring probe (31) on one side of the resistance box (14) and the two ultrasonic thickness measuring probes (31) at the ends of both sides of the pull rod 1 (10). A total of three ultrasonic thickness measuring probes (31) are in contact with three key impact points of the medium conveying steel pipe to achieve synchronous ultrasonic thickness measurement; The liquid injection assembly includes two double-sided electromagnets (6) and two piston plates (7), wherein the two double-sided electromagnets (6) are symmetrically fixedly mounted at the middle position inside the top of the limit box (3), and the two piston plates (7) are respectively fixedly connected to the outside of one end of two sets of symmetrically arranged limit rods (9) located inside the limit box (3), and an iron sheet (8) is embedded on the outside of one side of the two piston plates (7) close to the double-sided electromagnet (6); A one-way liquid discharge valve tube (17) is fixedly passed through the top of the resistance box (14), and the input end of the one-way liquid discharge valve tube (17) is fixedly installed inside the top side of the limit box (3). A piston block (19) is installed in a sliding seal on the side of the resistance box (14) close to the one-way liquid discharge valve tube (17). A compression spring (20) is connected and fixed between the piston block (19) and the inner wall of one side of the resistance box (14). A liquid discharge port (18) is transversely passed through the side of the resistance box (14) away from the piston block (19), and a trigger assembly is provided on the side of the resistance box (14) close to the liquid discharge port (18).

2. The ultrasonic thickness measuring device for pipe fittings according to claim 1, characterized in that: A connecting frame (13) is longitudinally fixedly installed on one side of the bottom end of the second pull rod (11) and one side of the bottom end of both ends of the pull rod one (10), and the bottom end of the connecting frame (13) is fixedly installed on the top end of the corresponding side contact box (14).

3. The ultrasonic thickness measuring device for pipe fittings according to claim 1, characterized in that: A liquid storage tank (16) is fixedly mounted on the outside of one side of the limit box (3), a one-way liquid inlet valve tube (15) is fixedly mounted through the bottom end of the liquid storage tank (16), and an output end of the one-way liquid inlet valve tube (15) is fixedly mounted through the inside of one side of the limit box (3) near the middle position.

4. The ultrasonic thickness measuring device for pipe fittings according to claim 1, characterized in that: The trigger assembly includes a rotating shaft (21), a limiting frame (22) and a sealing plate (23), wherein the rotating shaft (21) rotates transversely and penetrates the sealing installation on one side of the contact box (14), the limiting frame (22) is fixedly installed on the outside of one side of the rotating shaft (21), the sealing plate (23) is fixedly installed on the outside of the limiting frame (22) away from the rotating shaft (21), one side of the sealing plate (23) is sealed in contact with one side of the discharge port (18), and a limiting gear (27) is fixedly installed on the end of the rotating shaft (21) that passes through the rotating shaft, and the contact box (14) is close to the limiting frame (22). A limiting block (24) is fixedly installed on one side of the bottom end of the limiting gear (27), and a rack (25) is installed inside the limiting block (24) in a transverse sliding engagement manner. A tooth end of one side of the rack (25) is meshedly connected with one side of the limiting gear (27), and a resistance block (26) is fixedly installed on the side of the rack (25) away from the limiting gear (27). A positioning block (28) is fixedly installed on the outside of the resistance box (14) close to the limiting gear (27), and a resistance spring (29) is connected and fixed between the positioning block (28) and the outside of one side of the rack (25).

5. The ultrasonic thickness measuring device for pipe fittings according to claim 1, characterized in that: A limiting ring (32) is fixedly connected to the outside of one end of the ultrasonic thickness measuring probe (31), and a plurality of second resisting springs (33) are fixedly connected around the limiting ring (32) and the outside of one side of the sliding seat (30).

6. The ultrasonic thickness measuring device for pipe fittings according to claim 1, characterized in that: The intermittent shifting assembly includes a missing gear plate (36) and a positioning gear (37), wherein the missing gear plate (36) is rotatably mounted on the outside of one top side of the fixed plate (2), and the positioning gear (37) is rotatably mounted on the outside of one top side of the fixed plate (2) near the bottom end of the limit box (3), and a fixing frame (34) is fixedly mounted on one top side of the snap frame (1) near the missing gear plate (36), and a low-speed motor (35) is fixedly mounted inside the fixing frame (34), and an output end of the low-speed motor (35) is fixedly mounted at a middle position of the top end of the missing gear plate (36).

7. The ultrasonic thickness measuring device for pipe fittings according to claim 6, characterized in that: A limiting column (38) is fixedly installed at the edge of one side of the top end of the positioning gear (37), and a positioning rod (39) is provided at the top end of the limiting column (38). The positioning rod (39) is arranged in a cross shape when viewed from above. An auxiliary block (41) is fixedly installed at the top end of one side of the fixing plate (2) close to the positioning rod (39), and one end of the positioning rod (39) is slidably engaged and installed inside one side of the auxiliary block (41).

8. The ultrasonic thickness measuring device for pipe fittings according to claim 7, characterized in that: A limiting groove (40) is provided inside the middle position of the positioning rod (39), and the limiting column (38) is slidably fitted inside one side of the limiting groove (40). Both ends of the positioning rod (39) are fixedly mounted on the outside of both sides of the bottom end of the limiting box (3) through brackets.

9. A thickness measurement method using an ultrasonic thickness measurement device for pipe fittings, according to any one of claims 1 to 8, characterized in that: The steps include: S1: First, the ultrasonic thickness measuring device is fixed as a whole on the corresponding T-shaped medium conveying steel pipe through the snap frame (1) to complete the positioning. When testing is required, the ultrasonic thickness measuring adjustment component is triggered to drive the three ultrasonic thickness measuring probes (31) on both sides to move vertically in the center, and to contact and fit on the three key impact points of the medium conveying steel pipe, and start the synchronous ultrasonic thickness measuring operation; S2: When the ultrasonic thickness measurement adjustment component is in operation, it drives the injection component to operate, thereby squeezing a certain amount of coupling agent into the interior of each contact box (14), completing the coupling agent supply. When the three ultrasonic thickness measurement probes (31) are in contact with the medium conveying steel pipe, the component is triggered to operate, thereby automatically squeezing the quantitatively delivered coupling agent to adhere to the detection point of the medium conveying steel pipe; S3: When performing ultrasonic thickness measurement, the intermittent displacement assembly is operated to drive the three ultrasonic thickness measuring probes (31) to perform intermittent movement of a small distance at three key impact points, thereby performing multiple measurements at a small interval at each impact point, and taking the average measurement value to ensure the accuracy of the measurement result; S4: After the overall measurement is completed, the ultrasonic thickness measurement adjustment component can be controlled to be powered off and reset, so that the ultrasonic thickness measurement probe (31) is separated from the surface of the medium conveying steel pipe to avoid long-term contact friction loss.

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