An ultrasonic detection device for pipeline defects

Abstract

The present application relates to an ultrasonic detection device for pipeline defects, belonging to the technical field of pipeline detection. It includes a support box, a moving component, an adjusting component, a smearing component, and an ultrasonic detection component. The moving component, the adjusting component, and the smearing component are all arranged on the support box, and the ultrasonic detection component is arranged on the smearing component. The moving component is used to quickly drive the support box to move linearly in the pipeline and slowly drive the support box to move spirally in the pipeline. The adjusting component is used to switch the moving component between the linear fast driving mode and the spiral slow driving mode. The smearing component is used to smear the coupling agent, and the ultrasonic detection component is used to perform spiral flaw detection on the inner wall of the pipeline during the process of the smearing component smearing the coupling agent. The present application has the effect of enabling the ultrasonic probe to comprehensively detect the entire inner wall of the flaw detection part of the pipeline.

Description

Technical Field

[0001] This application relates to the technical field of pipeline detection, and in particular to an ultrasonic detection device for pipeline defects. Background Art

[0002] During the long-term use of pipelines, defects are likely to form inside. To avoid pipeline leakage caused by internal defects of pipelines, it is necessary to detect the inside of pipelines. In the prior art, ultrasonic waves are usually used to detect pipeline flaws.

[0003] Chinese Patent with publication number CN116539727B discloses an ultrasonic detection device for pipeline defects. It moves the ultrasonic probe into the pipeline through a traveling trolley. When detecting the pipeline, first, a coupling agent coating mechanism is used to apply a coupling agent on the inner wall of the pipeline, then the ultrasonic probe is used to perform ultrasonic flaw detection on the inner wall of the pipeline, and then the coupling agent is recovered through a coupling agent cleaning mechanism, so that the ultrasonic probe can automatically apply the coupling agent before flaw detection.

[0004] In the above solution, although it is convenient to quickly move the ultrasonic probe to the flaw detection part of the pipeline for flaw detection, since the traveling trolley can only move along the axial direction of the pipeline, it is difficult for the ultrasonic probe to comprehensively detect the entire inner wall of the flaw detection part of the pipeline. Summary of the Invention

[0005] In order to enable the ultrasonic probe to comprehensively detect the entire inner wall of the flaw detection part of the pipeline, this application provides an ultrasonic detection device for pipeline defects.

[0006] An ultrasonic detection device for pipeline defects provided by this application adopts the following technical solutions:

[0007] An ultrasonic detection device for pipeline defects includes:

[0008] A support box;

[0009] A moving component, including a moving part and a driving part. The moving part includes a moving rod, a rotating plate, a moving wheel, and a moving spring;

[0010] An adjusting component, including a moving adjustment part and a flaw detection adjustment part. The moving adjustment part includes an adjustment motor, an adjustment shaft, a first bevel gear, and a second bevel gear;

[0011] A coating component, including a coating part and a liquid supply part. The coating part includes a coating rod and a coating roller;

[0012] An ultrasonic detection component, including an ultrasonic probe;

[0013] Among them,

[0014] There are two sets of moving rods, both of which are arranged on the support box. The two sets of moving rods are arranged along the moving direction of the support box in the pipeline. The number of each set of moving rods is at least three, and they are all arranged along the circumferential direction of the support box. There are at least six rotating plates and moving wheels, and they are all in one-to-one correspondence with the moving rods. The rotating plate is hinged at one end of the moving rod and is rotatably connected to the support box. The moving wheel is rotatably connected to the other end of the moving rod and is used to abut against the inner wall of the pipeline. The moving wheel is a spherical roller;

[0015] There are at least three moving springs, and they are all in one-to-one correspondence with each set of moving rods. The moving springs are connected between the corresponding two moving rods. The moving springs are used to drive the two moving rods to swing towards each other. The driving part is used to drive the moving wheel to rotate relative to the moving rod;

[0016] The adjusting motor is connected to the support box. The adjusting shaft is connected to the output shaft of the adjusting motor. There are two first bevel gears, and they are in one-to-one correspondence with the two sets of moving rods. The first bevel gears are connected to the adjusting shaft. There are at least six second bevel gears, and they are in one-to-one correspondence with the rotating plates. The second bevel gears are connected to the rotating plates. The first bevel gears are meshed with all the second bevel gears corresponding to the corresponding set of moving rods;

[0017] There is at least one coating rod and one coating roller, and they are in one-to-one correspondence. One end of the coating rod is hinged to the front end of the support box in the moving direction in the pipeline. A coating tension spring is connected between the coating rod and the support box. The coating tension spring is used to drive the coating rod to be parallel to the moving direction of the support box in the pipeline. One end of the coating roller is connected to the other end of the coating rod. A coating sponge is sleeved on the coating roller. The liquid supply part is arranged on the support box and is used to supply the coupling agent to the coating sponge;

[0018] The flaw detection adjusting part is connected to the adjusting shaft and is used to drive the coating rod to swing towards the direction close to the inner wall of the pipeline when the adjusting shaft adjusts the moving rod, so that the coating sponge abuts against the inner wall of the pipeline;

[0019] There is at least one ultrasonic probe, and it is in one-to-one correspondence with the coating rod. The ultrasonic probe is connected to the coating rod and is arranged close to the coating roller. When the coating sponge abuts against the inner wall of the pipeline, the ultrasonic probe abuts against the inner wall of the pipeline.

[0020] By adopting the above technical solutions, the moving rod supports the support box in the pipeline by means of the elastic force of the moving spring. The driving part drives the moving wheel to rotate, so that the support box can be quickly moved to the flaw detection part of the pipeline. Then, the adjusting motor is started. The adjusting motor drives the adjusting shaft to rotate. The adjusting shaft drives the first bevel gear to rotate. The first bevel gear drives the second bevel gear to rotate. The second bevel gear drives the rotating plate to rotate. The rotating plate drives the moving rod to swing, so as to adjust the rotation axis direction of the moving wheel, enabling the ultrasonic detection device to move spirally in the pipeline.

[0021] When adjusting the moving wheel by the adjusting shaft, the adjusting shaft can drive the coating rod to swing towards the direction close to the inner wall of the pipeline through the flaw detection adjusting part, so that the coating sponge on the coating roller abuts against the inner wall of the pipeline. The coupling agent supplied by the liquid supply part to the coating sponge can be applied to the inner wall of the pipeline when the coating sponge moves spirally. The ultrasonic probe can be attached to the inner wall of the pipeline along with the movement of the coating sponge. The ultrasonic probe uses the coupling agent applied by the coating sponge to detect the flaw of the inner wall of the pipeline. And because the ultrasonic detection device moves spirally as a whole in the pipeline, the ultrasonic probe can detect the flaw by spirally attaching to the wall, so that the ultrasonic probe can comprehensively detect the entire inner wall of the flaw detection part of the pipeline.

[0022] Optionally, a coating groove is formed at one end of the coating roller close to the coating rod. A connecting plate is rotatably connected at the notch of the coating groove. The connecting plate is hinged to the coating rod. A coating torsion spring is arranged at the hinged part of the coating rod and the connecting plate. The coating torsion spring is used to drive the coating roller to be parallel to the coating rod. A plurality of coating holes are formed on the outer side wall of the coating roller. The coating holes are communicated with the coating groove. The liquid supply part is used to supply the coupling agent into the coating groove.

[0023] By adopting the above technical scheme, the liquid supply part supplies the coupling agent into the coating groove. The coupling agent flows from the coating groove to each coating hole, and then from the coating hole to the coating sponge, so that the coating sponge is easy to evenly adsorb the coupling agent, and thus the coating sponge is convenient to evenly apply the coupling agent on the inner wall of the pipeline.

[0024] Optionally, the liquid supply part includes a liquid supply box, a liquid supply push plate and a liquid supply pipe. The liquid supply box is connected to the support box. The liquid supply push plate is slidably arranged in the liquid supply box. A coupling agent storage cavity is formed between one side of the liquid supply push plate and the liquid supply box. The coupling agent storage cavity is used to store the coupling agent. One end of the liquid supply pipe is communicated with the side wall of the coupling agent storage cavity, and the other end is communicated with the connecting plate.

[0025] By adopting the above technical scheme, slide the liquid supply push plate to reduce the space of the coupling agent storage cavity, so that the coupling agent in the coupling agent storage cavity can be extruded into the liquid supply pipe, and the coupling agent can flow into the coating groove along the liquid supply pipe to supply the coupling agent into the coating groove.

[0026] Optionally, the ultrasonic detection assembly further includes a telescopic rod, an ultrasonic detection spring, a first synchronous pulley, a second synchronous pulley, and a synchronous drive belt. The fixed end of the telescopic rod is hinged to the coating rod, the movable end of the telescopic rod is connected to the ultrasonic probe, the ultrasonic detection spring is connected between the fixed end and the movable end of the telescopic rod and is used to drive the telescopic rod to extend. The first synchronous pulley is connected to the hinge shaft of the coating rod and the connecting plate, and the first synchronous pulley moves synchronously with the connecting plate. The second synchronous pulley is connected to the hinge shaft of the fixed end of the telescopic rod and the coating rod, and the second synchronous pulley moves synchronously with the telescopic rod. The synchronous drive belt is wound around the first synchronous pulley and the second synchronous pulley. The detection direction of the ultrasonic probe is perpendicular to the rotation axis direction of the coating roller.

[0027] By adopting the above technical solution, when the coating roller rotates due to abutting against the inner wall of the pipeline, the connecting plate can drive the first synchronous pulley to rotate. The first synchronous pulley drives the second synchronous pulley to rotate in the same direction through the synchronous drive belt, so as to drive the telescopic rod to swing, so that the detection direction of the ultrasonic probe can always be perpendicular to the rotation axis direction of the coating roller, so that the ultrasonic probe can detect the inner wall of the pipeline vertically; when the ultrasonic probe abuts against the inner wall of the pipeline, the ultrasonic probe can drive the telescopic rod to contract to compress the ultrasonic detection spring. On the one hand, it makes the ultrasonic probe not easy to collide and damage with the inner wall of the pipeline, and on the other hand, it makes the ultrasonic probe stably abut against the inner wall of the pipeline under the elastic force of the ultrasonic detection spring.

[0028] Optionally, it further includes a cleaning assembly. The cleaning assembly includes a cleaning part and a collection part. The cleaning part includes a cleaning rod and a cleaning scraping groove. There is at least one cleaning rod and one cleaning scraping groove, and they correspond one by one. One end of the cleaning rod is hinged to one end of the support box close to the coating rod. The length of the cleaning rod is greater than the sum of the lengths of the coating roller and the coating rod. A cleaning tension spring is connected between the cleaning rod and the support box, and the cleaning tension spring is used to drive the cleaning rod to be parallel to the moving direction of the support box in the pipeline. One end of the cleaning scraping groove is hinged to the end of the cleaning rod far from the support box. A cleaning torsion spring is arranged at the hinge joint of the cleaning rod and the cleaning scraping groove, and the cleaning torsion spring is used to drive the cleaning scraping groove to be parallel to the cleaning rod. The flaw detection adjustment part is used to drive the cleaning rod to swing towards the direction close to the inner wall of the pipeline when adjusting the moving rod on the adjusting shaft, so that the cleaning scraping groove abuts against the inner wall of the pipeline. The collection part is arranged on the support box and is used to collect the dirt scraped by the cleaning scraping groove.

[0029] By adopting the above technical solution, when the flaw detection adjustment part drives the coating rod to swing, the flaw detection adjustment part can simultaneously drive the cleaning rod to swing towards the direction close to the inner wall of the pipeline, so that the cleaning scraping groove abuts against the inner wall of the pipeline. The cleaning scraping groove can scrape the dirt on the inner wall of the pipeline into its own interior during the spiral movement, and the collection part collects the dirt in the cleaning scraping groove, so that the inner wall of the pipeline can be cleaned during flaw detection.

[0030] Optionally, the collection part includes a collection box, a collection filter screen, a collection pipe, a collection air pipe, and an air extraction pump. The collection box is connected to the support box, the collection filter screen is connected inside the collection box, a dirt storage cavity is formed between one side of the collection filter screen and the collection box, and the dirt storage cavity is used for storing dirt. One end of the collection pipe communicates with the side wall of the dirt storage cavity, and the other end communicates with the cleaning scraping groove. One end of the collection air pipe communicates with the collection box, the connection part of the collection air pipe and the collection box is opposite to the side of the collection filter screen away from the dirt storage cavity, and the other end of the collection air pipe communicates with the air extraction pump.

[0031] By adopting the above technical solution, during the process of the cleaning scraping groove scraping off dirt, the air extraction pump is started, and the air extraction pump extracts the air in the collection box, so that a negative pressure can be formed in the collection box. Under the action of the negative pressure, the air at the cleaning scraping groove will be drawn into the collection box, and the air can carry the dirt in the cleaning scraping groove into the dirt storage cavity through the collection pipe. The collection filter screen intercepts the dirt, so that the dirt can be retained in the dirt storage cavity, thereby enabling the dirt scraped by the cleaning scraping groove to be centrally collected.

[0032] Optionally, a recycling component is provided at one end of the support box away from the cleaning rod. The recycling component includes a cleaning part and a recycling part. The cleaning part includes a cleaning rod and a cleaning scraping groove. There is at least one cleaning rod and one cleaning scraping groove, and they correspond one by one. One end of the cleaning rod is hinged to one end of the support box away from the coating rod, and a cleaning tension spring is connected between the cleaning rod and the support box. The cleaning tension spring is used to drive the cleaning rod to be parallel to the moving direction of the support box in the pipeline. One end of the cleaning scraping groove is hinged to the end of the cleaning rod away from the support box, and a cleaning torsion spring is provided at the hinge joint of the cleaning rod and the cleaning scraping groove. The cleaning torsion spring is used to drive the cleaning scraping groove to be parallel to the cleaning rod. The flaw detection adjustment part is used to drive the cleaning rod to swing towards the direction close to the inner wall of the pipeline when adjusting the moving rod of the adjusting shaft, so that the cleaning scraping groove abuts against the inner wall of the pipeline. The recycling part is arranged on the liquid supply box and is used to recycle the coupling agent scraped by the cleaning scraping groove.

[0033] By adopting the above technical solution, when the flaw detection adjustment part drives the coating rod to swing, the flaw detection adjustment part can simultaneously drive the cleaning rod to swing towards the direction close to the inner wall of the pipeline, so that the cleaning scraping groove abuts against the inner wall of the pipeline. The cleaning scraping groove can scrape the coupling agent smeared on the inner wall of the pipeline into its own interior during the spiral movement process, and the recycling part recycles the coupling agent in the cleaning scraping groove, thereby enabling the coupling agent to be recycled.

[0034] Optionally, the recovery part includes a recovery plate, a waterproof and breathable membrane, a recovery pipe, and an air extraction pipe. The recovery plate is connected inside the liquid supply box and is located on the side of the liquid supply push plate away from the coupling agent storage cavity. The waterproof and breathable membrane is connected inside the liquid supply box and is located on the side of the recovery plate away from the liquid supply push plate. A coupling agent recovery cavity is formed between the waterproof and breathable membrane and the liquid supply box. The coupling agent recovery cavity is used to store the recovered coupling agent. One end of the recovery pipe is communicated with the side wall of the coupling agent recovery cavity, and the other end is communicated with the cleaning scraping groove. One end of the air extraction pipe is communicated with the part of the liquid supply box between the recovery plate and the waterproof and breathable membrane, and the other end is communicated with the collection box.

[0035] By adopting the above technical solution, when the air extraction pump extracts the air in the collection box, the air extraction pump can also extract the air between the recovery plate and the waterproof and breathable membrane and the air in the coupling agent recovery cavity through the air extraction pipe, so as to form a negative pressure in the coupling agent recovery cavity. Under the action of the negative pressure, the air at the cleaning scraping groove will be drawn into the liquid supply box, and the air can carry the coupling agent in the cleaning scraping groove into the coupling agent recovery cavity through the recovery pipe. The waterproof and breathable membrane intercepts the coupling agent, so that the coupling agent can be retained in the coupling agent recovery cavity, thereby enabling the coupling agent to be recovered.

[0036] Optionally, the liquid supply part further includes a mounting shell. The mounting shell is communicated with the collection box. A transmission shaft is rotatably connected inside the mounting shell. An impeller is sleeved on the transmission shaft. Part of the impeller blades is located in the collection box. The impeller is used to drive the transmission shaft to rotate by means of the air flow in the collection box. One end of the transmission shaft rotatably penetrates through the mounting shell and is belt-driven to connect with a worm. The worm is rotatably connected with the liquid supply box. The worm meshes with a worm gear. The worm gear is rotatably arranged inside the liquid supply box. The meshing connection between the worm and the worm gear is located at a relief hole opened on the liquid supply box. The worm gear is connected with a lead screw. The lead screw is threadedly penetrated through the liquid supply push plate and is rotatably connected with the liquid supply box.

[0037] By adopting the above technical solution, when the air extraction pump extracts the air in the collection box, the air flow in the collection box can drive the impeller to rotate. The impeller drives the transmission shaft to rotate. The transmission shaft drives the worm to rotate. The worm drives the worm gear to rotate. The worm gear drives the lead screw to rotate. The lead screw drives the liquid supply push plate to slide. Under the speed reduction transmission action of the worm gear and the worm, the liquid supply push plate can slowly extrude the coupling agent, so that the coupling agent can be slowly supplied to the coating groove by means of the air flow formed by the air extraction in the collection box.

[0038] Optionally, the flaw detection adjustment part includes a first adjustment disc, a second adjustment disc and a third adjustment disc. The first adjustment disc, the second adjustment disc and the third adjustment disc are all connected to the adjustment shaft, and the adjustment shaft is arranged on the output shaft of the adjustment motor. The first adjustment disc and the second adjustment disc are both located at one end of the support box close to the coating rod, and the third adjustment disc is located at one end of the support box far from the coating rod. At least one first push rod is connected to the first adjustment disc, and the first push rods correspond to the coating rods one by one and are used to push the coating rods so that the coating sponges are abutted against the inner wall of the pipeline. At least one second push rod is connected to the second adjustment disc, and the second push rods correspond to the cleaning rods one by one and are used to push the cleaning rods so that the cleaning scraping grooves are abutted against the inner wall of the pipeline. At least one third push rod is connected to the third adjustment disc, and the third push rods correspond to the cleaning rods one by one and are used to push the cleaning rods so that the cleaning scraping grooves are abutted against the inner wall of the pipeline.

[0039] By adopting the above technical solution, when the adjustment shaft adjusts the rotation axis direction of the moving wheel, the adjustment shaft can synchronously drive the first adjustment disc, the second adjustment disc and the third adjustment disc to rotate. The first adjustment disc drives the first push rod to push the coating rod to swing, the second adjustment disc drives the second push rod to push the cleaning rod to swing, and the third adjustment disc drives the third push rod to push the cleaning rod to swing, so that the coating sponge, the cleaning scraping groove and the cleaning scraping groove can all be abutted against the inner wall of the pipeline.

[0040] In summary, the present application includes at least one of the following beneficial technical effects:

[0041] 1. By arranging the support box, the moving component, the adjustment component, the coating component and the ultrasonic flaw detection component, the inner wall of the pipeline can be subjected to spiral flaw detection, so that the ultrasonic probe can perform comprehensive flaw detection on the entire inner wall of the flaw detection part of the pipeline;

[0042] 2. By arranging the cleaning component, the inner wall of the pipeline can be cleaned during flaw detection, so that the dirt on the inner wall of the pipeline is not likely to affect the flaw detection;

[0043] 3. By arranging the recovery component, the coupling agent smeared on the inner wall of the pipeline can be recycled. Description of the Drawings

[0044] Figure 1 is a schematic structural diagram of an embodiment of the present application;

[0045] Figure 2 is a schematic structural diagram of the liquid supply part and the collection part;

[0046] Figure 3 is Figure 1 an enlarged view of part A in

[0047] Figure 4 is Figure 1 an enlarged view of part B in

[0048] Figure 5 It is an exploded view of the coating groove, connecting plate and coating hole;

[0049] Figure 6 It is a structural diagram of the super-exploration spring;

[0050] Figure 7 yes Figure 1 Enlarged view at center C;

[0051] Figure 8 yes Figure 1 Magnified view at D in the middle;

[0052] Figure 9 yes Figure 2 Magnified view at E in the middle.

[0053] Description of reference numerals:

[0054] 1. Support box; 2. Moving assembly; 21. Moving part; 211. Moving rod; 212. Rotating plate; 213. Moving wheel; 214. Moving spring; 22. Driving part; 221. Moving motor; 222. Transmission wheel; 3. Adjustment assembly; 31. Moving adjustment part; 311. Adjustment motor; 312. Adjustment shaft; 313. First bevel gear; 314. Second bevel gear; 32. Flaw detection adjustment part; 321. First adjustment disk; 3211. First push rod; 322. First Second adjustment disk; 3221, second push rod; 323, third adjustment disk; 3231, third push rod; 4, smear assembly; 41, smearing part; 411, smearing rod; 4111, smearing tension spring; 4112, smearing torsion spring; 412, smearing roller; 4121, smearing sponge; 4122, smearing groove; 4123, connecting plate; 4124, smearing hole; 42, liquid supply part; 421, liquid supply box; 4211, clearance hole; 422, liquid supply push plate; 4221, coupling agent storage cavity; 423, liquid supply pipe; 424, mounting shell; 425, transmission shaft; 426, impeller; 427, worm; 428, worm wheel; 429, lead screw; 5, super-detection assembly; 51, ultrasonic probe; 52, telescopic rod; 53, super-detection spring; 54, first synchronous pulley; 55, second synchronous pulley; 56, synchronous drive belt; 6, cleaning assembly; 61, cleaning part; 611, cleaning rod; 6111, cleaning tension spring; 6112, cleaning torsion spring; 612, cleaning scraping groove ; 62. Collecting part; 621. Collecting box; 622. Collecting filter; 6221. Dirt storage chamber; 623. Collecting pipe; 624. Collecting air pipe; 625. Vacuum pump; 7. Recovery component; 71. Cleaning part; 711. Cleaning rod; 7111. Cleaning tension spring; 7112. Cleaning torsion spring; 712. Cleaning scraper groove; 72. Recovery part; 721. Recovery plate; 722. Waterproof breathable membrane; 7221. Coupling agent recovery chamber; 723. Recovery pipe; 724. Vacuum pipe. Specific embodiments

[0055] The following further describes the present application in detail with reference to the attached Figures 1-9 drawings.

[0056] An ultrasonic detection device for pipeline defects is disclosed in an embodiment of the present application. Referring to Figure 1 FIGs., an ultrasonic detection device for pipeline defects includes a support box 1, a moving component 2, an adjusting component 3, an applying component 4, and an ultrasonic detection component 5.

[0057] Referring to Figure 1 and Figure 2 FIGs., the support box 1 is in the shape of a rectangular box. The moving component 2 includes a moving part 21 and a driving part 22. The moving part 21 includes a moving rod 211, a rotating plate 212, a moving wheel 213, and a moving spring 214. The adjusting component 3 includes a moving adjustment part 31 and an inspection adjustment part 32. The moving adjustment part 31 includes an adjustment motor 311, an adjustment shaft 312, a first bevel gear 313, and a second bevel gear 314. The applying component 4 includes an applying part 41 and a liquid supply part 42. The applying part 41 includes an applying rod 411 and an applying roller 412. The ultrasonic detection component 5 includes an ultrasonic probe 51.

[0058] Referring to Figure 1 FIG., there are two groups of moving rods 211, and both are arranged on the support box 1. The two groups of moving rods 211 are arranged along the moving direction of the support box 1 in the pipeline. The number of each group of moving rods 211 is four, and they are all arranged along the circumferential direction of the support box 1. There are eight rotating plates 212 and eight moving wheels 213, and they all correspond to the moving rods 211 one by one. The rotating plate 212 is hinged to one end of the moving rod 211 and is rotatably connected to the side wall of the support box 1. The moving wheel 213 is rotatably connected to the other end of the moving rod 211 and is used to abut against the inner wall of the pipeline. The moving wheel 213 is a spherical roller. The moving rod 211 can adjust the direction of the rotation axis of the moving wheel 213 following the rotation of the rotating plate 212. And because the moving wheel 213 is a spherical roller, it is convenient for the moving wheel 213 to abut against the inner wall of the pipeline after adjusting the rotation axis direction, so that the support box 1 can move quickly in a straight line in the pipeline and can move slowly in a spiral in the pipeline.

[0059] There are four moving springs 214, and they all correspond to each group of moving rods 211 one by one. The two ends of the moving spring 214 are respectively fixedly connected between the corresponding two moving rods 211. The moving spring 214 is used to drive the two moving rods 211 to swing towards each other. Through the elastic force of the moving spring 214, on the one hand, the moving rod 211 can stably support the support box 1 in the pipeline, and on the other hand, the support box 1 can be adapted to be supported in pipelines with different diameters.

[0060] Referring to Figure 3, the driving part 22 is used to drive the moving wheel 213 to rotate relative to the moving rod 211. In this application, the driving part 22 includes a moving motor 221 and a transmission wheel 222. There are eight moving motors 221 and eight transmission wheels 222, and they all correspond to the moving rod 211 one by one. The moving motor 221 is fixedly connected to the moving rod 211, the transmission wheel 222 is fixedly connected to the output shaft of the moving motor 221, the transmission wheel 222 abuts against the moving wheel 213, and is used to drive the moving wheel 213 to rotate.

[0061] Referring to Figure 2 , the adjusting motor 311 is fixedly connected to the outer wall of the support box 1. The adjusting motor 311 is located at the rear end of the support box 1 in the moving direction in the pipeline, and the output shaft of the adjusting motor 311 rotates and penetrates into the support box 1. The adjusting shaft 312 is connected to the output shaft of the adjusting motor 311. There are two first bevel gears 313, and they correspond to the two groups of moving rods 211 one by one. The first bevel gears 313 are located in the support box 1 and are fixedly connected to the adjusting shaft 312. There are eight second bevel gears 314, and they correspond to the rotating plates 212 one by one. The second bevel gears 314 are located in the support box 1, the second bevel gears 314 are fixedly connected to the rotating plates 212, the first bevel gears 313 are meshed with all the second bevel gears 314 corresponding to the corresponding group of moving rods 211, and the rotation directions of the second bevel gears 314 driven by the two first bevel gears 313 are the same. The adjusting motor 311 can drive the rotating plate 212 to rotate through the adjusting shaft 312, the first bevel gear 313 and the second bevel gear 314, so as to adjust the direction of the rotation axis of the moving wheel 213.

[0062] Referring to Figure 1 and Figure 4 , there are three coating rods 411 and three coating rollers 412, and they correspond to each other one by one. One end of the coating rod 411 is hinged to the front end of the support box 1 in the moving direction in the pipeline. A coating tension spring 4111 is fixedly connected between the coating rod 411 and the support box 1. The coating tension spring 4111 is used to drive the coating rod 411 to be parallel to the moving direction of the support box 1 in the pipeline. In the non-detection section of the pipeline, the coating rod 411 can move away from the inner wall of the pipeline under the elastic force of the coating tension spring 4111 to avoid hindering the movement of the support box 1. One end of the coating roller 412 is connected to the other end of the coating rod 411. A coating sponge 4121 is sleeved on the coating roller 412. The liquid supply part 42 is arranged on the support box 1 and is used to supply the coupling agent to the coating sponge 4121. The liquid supply part 42 supplies the coupling agent to the coating sponge 4121, swings the coating rod 411 against the elastic force of the coating tension spring 4111, so that the coating sponge 4121 abuts against the inner wall of the pipeline, and the coating sponge 4121 can apply the coupling agent on the inner wall of the pipeline.

[0063] Referring to Figure 1, the flaw detection adjustment part 32 is connected to the adjustment shaft 312 and is used to drive the smearing rod 411 to swing towards the direction close to the inner wall of the pipeline when the adjustment shaft 312 adjusts the moving rod 211, so that the smearing sponge 4121 abuts against the inner wall of the pipeline, enabling the timing of the abutment between the smearing sponge 4121 and the inner wall of the pipeline to be adapted to the adjustment timing of the rotation axis direction of the moving wheel 213, and enabling the swing of the smearing rod 411 to rely on the driving force formed by the rotation of the adjustment shaft 312.

[0064] There are three ultrasonic probes 51, which correspond to the smearing rods 411 one by one. The ultrasonic probes 51 are connected to the smearing rods 411 and are arranged close to the smearing roller 412. When the smearing sponge 4121 abuts against the inner wall of the pipeline, the ultrasonic probes 51 are in contact with the inner wall of the pipeline, enabling the ultrasonic probes 51 to perform flaw detection by adhering to the wall with the coupling agent, improving the flaw detection effect of the ultrasonic probes 51.

[0065] During use, the moving rod 211 supports the support box 1 in the pipeline by means of the elastic force of the moving spring 214. The moving motor 221 drives the moving wheel 213 to rotate through the transmission wheel 222, so that the support box 1 quickly moves to the flaw detection part of the pipeline. Then, the adjustment motor 311 is started. The adjustment motor 311 drives the adjustment shaft 312 to rotate. The adjustment shaft 312 drives the first bevel gear 313 to rotate. The first bevel gear 313 drives the second bevel gear 314 to rotate. The second bevel gear 314 drives the rotating plate 212 to rotate. The rotating plate 212 drives the moving rod 211 to swing, so as to adjust the rotation axis direction of the moving wheel 213, enabling the ultrasonic detection device to move spirally in the pipeline.

[0066] When the adjustment shaft 312 adjusts the moving wheel 213, the adjustment shaft 312 can drive the smearing rod 411 to swing towards the direction close to the inner wall of the pipeline through the flaw detection adjustment part 32, so that the smearing sponge 4121 on the smearing roller 412 abuts against the inner wall of the pipeline. The coupling agent supplied by the liquid supply part 42 to the smearing sponge 4121 can be smeared on the inner wall of the pipeline when the smearing sponge 4121 moves spirally. The ultrasonic probe 51 can be in contact with the inner wall of the pipeline following the movement of the smearing sponge 4121. The ultrasonic probe 51 performs flaw detection on the inner wall of the pipeline by means of the coupling agent smeared by the smearing sponge 4121. And because the ultrasonic detection device moves spirally as a whole in the pipeline, the ultrasonic probe 51 can perform wall-attached spiral flaw detection, so that the ultrasonic probe 51 can perform comprehensive flaw detection on the entire inner wall of the flaw detection part of the pipeline.

[0067] Refer to Figure 5, in the present application, at one end of the coating roller 412 close to the coating rod 411, a coating groove 4122 is provided. At the notch of the coating groove 4122, a connecting plate 4123 is rotatably connected. The connecting plate 4123 is hinged to the coating rod 411. At the hinge of the coating rod 411 and the connecting plate 4123, a coating torsion spring 4112 is provided. The two ends of the coating torsion spring 4112 are fixedly connected to the coating rod 411 and the connecting plate 4123 respectively. The coating torsion spring 4112 is used to drive the coating roller 412 to be parallel to the coating rod 411, so that the coating sponge 4121 can stably abut against the inner wall of the pipeline. A plurality of coating holes 4124 are provided on the outer side wall of the coating roller 412. The coating holes 4124 communicate with the coating groove 4122. The liquid supply part 42 is used to supply the coupling agent into the coating groove 4122.

[0068] The liquid supply part 42 supplies the coupling agent into the coating groove 4122. The coupling agent flows from the coating groove 4122 to each coating hole 4124. The coupling agent flows from the coating hole 4124 to the coating sponge 4121, making it easy for the coupling agent to be evenly adsorbed on the coating sponge 4121, so that the coating sponge 4121 can easily and evenly apply the coupling agent on the inner wall of the pipeline.

[0069] Specifically, referring to Figure 2 , the liquid supply part 42 includes a liquid supply box 421, a liquid supply push plate 422 and a liquid supply pipe 423.

[0070] Referring to Figure 2 and Figure 4 , the liquid supply box 421 is fixedly connected to the inner wall of the support box 1. The liquid supply push plate 422 is slidably arranged in the liquid supply box 421, and the sliding direction is parallel to the moving direction of the support box 1 in the pipeline. A coupling agent storage cavity 4221 is formed between the side of the liquid supply push plate 422 close to the coating rod 411 and the liquid supply box 421. The coupling agent storage cavity 4221 is used to store the coupling agent. One end of the liquid supply pipe 423 is communicated with the side wall of the coupling agent storage cavity 4221, and the other end is communicated with the connecting plate 4123, and the liquid supply pipe 423 is fixedly arranged through the support box 1.

[0071] Slide the liquid supply push plate 422 to reduce the space of the coupling agent storage cavity 4221, so that the coupling agent in the coupling agent storage cavity 4221 can be extruded into the liquid supply pipe 423. The coupling agent can flow into the coating groove 4122 along the liquid supply pipe 423 to supply the coupling agent into the coating groove 4122.

[0072] Specifically, referring to Figure 4 and Figure 6 , the ultrasonic detection assembly 5 further includes a telescopic rod 52, an ultrasonic detection spring 53, a first synchronous pulley 54, a second synchronous pulley 55 and a synchronous drive belt 56.

[0073] The fixed end of the telescopic rod 52 is hinged to the side of the coating rod 411 close to the inner wall of the pipeline, and the movable end of the telescopic rod 52 is fixedly connected to the ultrasonic probe 51. The ultrasonic detection spring 53 is located in the rodless cavity of the telescopic rod 52 and is fixedly connected between the fixed end and the movable end of the telescopic rod 52. The ultrasonic detection spring 53 is used to drive the telescopic rod 52 to extend. The first synchronous pulley 54 is fixedly connected to the hinge shaft of the coating rod 411 and the connecting plate 4123. The first synchronous pulley 54 moves synchronously with the connecting plate 4123. The second synchronous pulley 55 is fixedly connected to the hinge shaft of the fixed end of the telescopic rod 52 and the coating rod 411. The second synchronous pulley 55 moves synchronously with the telescopic rod 52. The synchronous drive belt 56 is wound around the first synchronous pulley 54 and the second synchronous pulley 55. The detection direction of the ultrasonic probe 51 is perpendicular to the rotation axis direction of the coating roller 412.

[0074] Among them, for the hinge shaft of the coating rod 411 and the connecting plate 4123, the hinge shaft is fixedly connected to the connecting plate 4123; for the hinge shaft of the fixed end of the telescopic rod 52 and the coating rod 411, the hinge shaft is fixedly connected to the fixed end of the telescopic rod 52.

[0075] When the coating roller 412 rotates due to abutting against the inner wall of the pipeline, the connecting plate 4123 can drive the first synchronous pulley 54 to rotate. The first synchronous pulley 54 drives the second synchronous pulley 55 to rotate in the same direction through the synchronous drive belt 56, so as to drive the telescopic rod 52 to swing, so that the detection direction of the ultrasonic probe 51 can always be perpendicular to the rotation axis direction of the coating roller 412, so that the ultrasonic probe 51 can detect the flaws perpendicular to the inner wall of the pipeline; when the ultrasonic probe 51 abuts against the inner wall of the pipeline, the ultrasonic probe 51 can drive the telescopic rod 52 to contract, so as to compress the ultrasonic detection spring 53. On the one hand, it makes the ultrasonic probe 51 not easy to collide and damage with the inner wall of the pipeline, and on the other hand, it makes the ultrasonic probe 51 can stably abut against the inner wall of the pipeline under the elastic force of the ultrasonic detection spring 53.

[0076] Refer to Figure 1 , in order to make the dirt on the inner wall of the pipeline not easily affect the flaw detection, a pipeline defect ultrasonic detection device further includes a cleaning component 6. The cleaning component 6 includes a cleaning part 61 and a collection part 62. The cleaning part 61 includes a cleaning rod 611 and a cleaning scraping groove 612.

[0077] Both the cleaning rod 611 and the cleaning scraping groove 612 are provided with three, and they correspond to each other one by one. One end of the cleaning rod 611 is hinged to one end of the support box 1 close to the coating rod 411. The length of the cleaning rod 611 is greater than the sum of the lengths of the coating roller 412 and the coating rod 411. The cleaning rod 611 and the coating rod 411 are arranged alternately. A cleaning tension spring 6111 is fixedly connected between the cleaning rod 611 and the support box 1. The cleaning tension spring 6111 is used to drive the cleaning rod 611 to be parallel to the moving direction of the support box 1 in the pipeline. In the non-detection section of the pipeline, the cleaning rod 611 can move away from the inner wall of the pipeline under the elastic force of the cleaning tension spring 6111 to avoid hindering the movement of the support box 1.

[0078] Referring to Figure 1 and Figure 7 , one end of the cleaning scraping groove 612 is hinged to one end of the cleaning rod 611 far from the support box 1. A cleaning torsion spring 6112 is arranged at the hinge joint of the cleaning rod 611 and the cleaning scraping groove 612. Two ends of the cleaning torsion spring 6112 are respectively fixedly connected to the cleaning rod 611 and the cleaning scraping groove 612. The cleaning torsion spring 6112 is used to drive the cleaning scraping groove 612 to be parallel to the cleaning rod 611 so that the cleaning scraping groove 612 can stably abut against the inner wall of the pipeline. The flaw detection adjustment part 32 is used to drive the cleaning rod 611 to swing towards the direction close to the inner wall of the pipeline when adjusting the moving rod 211 of the adjusting shaft 312 so that the cleaning scraping groove 612 abuts against the inner wall of the pipeline. The collection part 62 is arranged on the support box 1 and is used to collect the dirt scraped by the cleaning scraping groove 612.

[0079] When the flaw detection adjustment part 32 drives the coating rod 411 to swing, the flaw detection adjustment part 32 can simultaneously drive the cleaning rod 611 to swing towards the direction close to the inner wall of the pipeline so that the cleaning scraping groove 612 abuts against the inner wall of the pipeline. The cleaning scraping groove 612 can scrape the dirt on the inner wall of the pipeline into its own interior during the spiral movement process. The collection part 62 collects the dirt in the cleaning scraping groove 612, so that the inner wall of the pipeline can be cleaned during flaw detection.

[0080] Furthermore, referring to Figure 1 and Figure 2 , the collection part 62 includes a collection box 621, a collection filter screen 622, a collection pipe 623, a collection air pipe 624 and an air extraction pump 625.

[0081] The collection box 621 is fixedly connected to the inner wall of the support box 1 and is disposed opposite to the liquid supply box 421. The collection filter screen 622 is fixedly connected inside the collection box 621. A dirt storage cavity 6221 is formed between the side of the collection filter screen 622 close to the cleaning rod 611 and the collection box 621. The dirt storage cavity 6221 is used for storing dirt. One end of the collection pipe 623 is communicated with the side wall of the dirt storage cavity 6221, and the other end is communicated with the cleaning groove 612. The collection pipe 623 is fixedly penetrated through the support box 1. One end of the collection air pipe 624 is communicated with the collection box 621. The connection part of the collection air pipe 624 and the collection box 621 is opposite to the side of the collection filter screen 622 away from the dirt storage cavity 6221. The other end of the collection air pipe 624 is communicated with the air extraction pump 625. The collection air pipe 624 is fixedly penetrated through the support box 1.

[0082] During the process of the cleaning groove 612 scraping off dirt, the air extraction pump 625 is started. The air extraction pump 625 extracts the air inside the collection box 621, so that a negative pressure can be formed inside the collection box 621. Under the action of the negative pressure, the air at the cleaning groove 612 will be drawn into the collection box 621. The air can carry the dirt inside the cleaning groove 612 and enter the dirt storage cavity 6221 through the collection pipe 623. The collection filter screen 622 intercepts the dirt, so that the dirt can be retained in the dirt storage cavity 6221, thereby enabling the dirt scraped off by the cleaning groove 612 to be centrally collected.

[0083] Refer to Figure 1 , in order to enable the coupling agent smeared on the inner wall of the pipeline to be recycled, a recycling component 7 is arranged at one end of the support box 1 away from the cleaning rod 611. The recycling component 7 includes a cleaning part 71 and a recycling part 72. The cleaning part 71 includes a cleaning rod 711 and a cleaning groove 712.

[0084] Both the cleaning rod 711 and the cleaning groove 712 are provided with three, and they correspond one by one. One end of the cleaning rod 711 is hinged to one end of the support box 1 away from the coating rod 411. A cleaning tension spring 7111 is fixedly connected between the cleaning rod 711 and the support box 1. The cleaning tension spring 7111 is used to drive the cleaning rod 711 to be parallel to the moving direction of the support box 1 inside the pipeline. In the non-detection section of the pipeline, the cleaning rod 711 can move away from the inner wall of the pipeline under the elastic force of the cleaning tension spring 7111 to avoid hindering the movement of the support box 1.

[0085] Refer to Figure 1 and Figure 8, one end of the cleaning groove 712 is hinged to the end of the cleaning rod 711 away from the support box 1. A cleaning torsion spring 7112 is arranged at the hinge joint between the cleaning rod 711 and the cleaning groove 712. The two ends of the cleaning torsion spring 7112 are fixedly connected to the cleaning rod 711 and the cleaning groove 712 respectively. The cleaning torsion spring 7112 is used to drive the cleaning groove 712 to be parallel to the cleaning rod 711 so that the cleaning groove 712 can stably abut against the inner wall of the pipeline. The flaw detection adjustment part 32 is used to drive the cleaning rod 711 to swing towards the direction close to the inner wall of the pipeline when adjusting the moving rod 211 by the adjusting shaft 312 so that the cleaning groove 712 abuts against the inner wall of the pipeline. The recovery part 72 is arranged on the liquid supply box 421 and is used to recover the coupling agent scraped by the cleaning groove 712.

[0086] When the flaw detection adjustment part 32 drives the coating rod 411 to swing, the flaw detection adjustment part 32 can simultaneously drive the cleaning rod 711 to swing towards the direction close to the inner wall of the pipeline so that the cleaning groove 712 abuts against the inner wall of the pipeline. The cleaning groove 612 can scrape the coupling agent smeared on the inner wall of the pipeline into its own interior during the spiral movement. The recovery part 72 recovers the coupling agent in the cleaning groove 712, so that the coupling agent can be recycled.

[0087] Further, referring to Figure 2 and Figure 9 , the recovery part 72 includes a recovery plate 721, a waterproof and breathable membrane 722, a recovery pipe 723 and an air extraction pipe 724.

[0088] The recovery plate 721 is fixedly connected inside the liquid supply box 421 and is located on the side of the liquid supply push plate 422 away from the coupling agent storage cavity 4221. The waterproof and breathable membrane 722 is fixedly connected inside the liquid supply box 421 and is located on the side of the recovery plate 721 away from the liquid supply push plate 422. A coupling agent recovery cavity 7221 is formed between the waterproof and breathable membrane 722 and the liquid supply box 421. The coupling agent recovery cavity 7221 is used to store the recovered coupling agent. One end of the recovery pipe 723 is communicated with the side wall of the coupling agent recovery cavity 7221, and the other end is communicated with the cleaning groove 712. And the recovery pipe 723 is fixedly arranged through the support box 1. One end of the air extraction pipe 724 is communicated with the part of the liquid supply box 421 located between the recovery plate 721 and the waterproof and breathable membrane 722, and the other end is communicated with the collection box 621.

[0089] When the air pump 625 pumps the air in the absorption and collection box 621, the air pump 625 can also suck the air between the recovery plate 721 and the waterproof and breathable membrane 722 and the air in the coupling agent recovery cavity 7221 through the air extraction pipe 724, so as to form a negative pressure in the coupling agent recovery cavity 7221. Under the action of the negative pressure, the air at the cleaning scraping groove 712 will be sucked into the liquid supply box 421. The air can carry the coupling agent in the cleaning scraping groove 712 into the coupling agent recovery cavity 7221 through the recovery pipe 723. The waterproof and breathable membrane 722 intercepts the coupling agent, so that the coupling agent can be retained in the coupling agent recovery cavity 7221, thereby enabling the coupling agent to be recovered.

[0090] Referring to Figure 9 , in order to enable the driving force of the liquid supply push plate 422 to utilize the air flow formed by air extraction in the collection box 621, so as to reduce the driving source and thus reduce the energy consumption, the liquid supply part 42 further includes a mounting shell 424. The mounting shell 424 is connected to the side of the collection box 621 close to the liquid supply box 421. A transmission shaft 425 is rotatably connected in the mounting shell 424. An impeller 426 is fixedly sleeved on the transmission shaft 425. Part of the blades of the impeller 426 is located in the collection box 621. The impeller 426 is used to drive the transmission shaft 425 to rotate by means of the air flow in the collection box 621. One end of the transmission shaft 425 rotatably penetrates out of the mounting shell 424 and is belt-driven to connect with a worm 427. The worm 427 is rotatably connected to the liquid supply box 421. The worm 427 meshes with a worm gear 428. The worm gear 428 is rotatably connected in the liquid supply box 421. The meshing connection part of the worm 427 and the worm gear 428 is located at a relief hole 4211 opened on the liquid supply box 421. The worm gear 428 is fixedly connected with a lead screw 429. The lead screw 429 is threadedly penetrated through the liquid supply push plate 422 and is rotatably connected to the liquid supply box 421.

[0091] When the air pump 625 pumps the air in the collection box 621, the air flow in the collection box 621 can drive the impeller 426 to rotate. The impeller 426 drives the transmission shaft 425 to rotate. The transmission shaft 425 drives the worm 427 to rotate. The worm 427 drives the worm gear 428 to rotate. The worm gear 428 drives the lead screw 429 to rotate. The lead screw 429 drives the liquid supply push plate 422 to slide. Under the speed reduction transmission action of the worm gear 428 and the worm 427, the liquid supply push plate 422 can slowly extrude the coupling agent, so that the coupling agent can be slowly supplied to the coating groove 4122 by means of the air flow formed by air extraction in the collection box 621.

[0092] Specifically, referring to Figure 1 , the flaw detection adjustment part 32 includes a first adjustment disc 321, a second adjustment disc 322 and a third adjustment disc 323.

[0093] The first adjustment disk 321, the second adjustment disk 322, and the third adjustment disk 323 are all in the shape of a circular disk and are all fixedly connected to the adjustment shaft 312. The adjustment shaft 312 is fixedly arranged on the output shaft of the adjustment motor 311. Both the first adjustment disk 321 and the second adjustment disk 322 are located at one end of the support box 1 close to the coating rod 411, and the third adjustment disk 323 is located at the end of the support box 1 far from the coating rod 411.

[0094] Three first push rods 3211 are fixedly connected to the first adjustment disk 321. The first push rods 3211 correspond to the coating rods 411 one by one. The first push rods 3211 are arranged at an angle with the diameter direction of the first adjustment disk 321. The first push rods 3211 are used to push the coating rod 411 so that the coating sponge 4121 abuts against the inner wall of the pipeline. Three second push rods 3221 are fixedly connected to the second adjustment disk 322. The second push rods 3221 correspond to the cleaning rods 611 one by one. The second push rods 3221 are arranged at an angle with the diameter direction of the second adjustment disk 322. The second push rods 3221 are used to push the cleaning rod 611 so that the cleaning groove 612 abuts against the inner wall of the pipeline. Three third push rods 3231 are fixedly connected to the third adjustment disk 323. The third push rods 3231 correspond to the cleaning rods 711 one by one. The third push rods 3231 are arranged at an angle with the diameter direction of the third adjustment disk 323. The third push rods 3231 are used to push the cleaning rod 711 so that the cleaning groove 712 abuts against the inner wall of the pipeline.

[0095] When the adjustment shaft 312 adjusts the rotation axis direction of the moving wheel 213, the adjustment shaft 312 can synchronously drive the first adjustment disk 321, the second adjustment disk 322, and the third adjustment disk 323 to rotate. The first adjustment disk 321 drives the first push rod 3211 to push the coating rod 411 to swing. The second adjustment disk 322 drives the second push rod 3221 to push the cleaning rod 611 to swing. The third adjustment disk 323 drives the third push rod 3231 to push the cleaning rod 711 to swing, so that the coating sponge 4121, the cleaning groove 612, and the cleaning groove 712 can all abut against the inner wall of the pipeline.

[0096] The implementation principle of a pipeline defect ultrasonic detection device according to an embodiment of the present application is as follows: When in use, eight moving rods 211 support the support box 1 in the pipeline. The moving motor 221 is started, and the moving motor 221 drives the moving wheel 213 to rotate, so that the ultrasonic detection device quickly moves to the flaw detection part of the pipeline. Then the adjustment motor 311 is started, and the adjustment motor 311 drives the adjustment shaft 312 to rotate. The adjustment shaft 312 drives the rotating plate 212 to rotate to adjust the rotation axis direction of the moving wheel 213, so that the entire ultrasonic detection device moves slowly in a spiral manner.

[0097] When the adjustment shaft 312 rotates, it synchronously drives the smearing rod 411, the cleaning rod 611, and the cleaning rod 711 to swing, so that the smearing sponge 4121, the cleaning groove 612, and the cleaning groove 712 all abut against the inner wall of the pipeline, and the ultrasonic probe 51 abuts against the inner wall of the pipeline. The cleaning groove 612 cleans the inner wall of the pipeline, the smearing sponge 4121 smears the coupling agent, the ultrasonic probe 51 performs ultrasonic flaw detection, and the cleaning groove 712 recovers the coupling agent. Since the ultrasonic probe 51 can move spirally for flaw detection, the ultrasonic probe 51 can perform comprehensive flaw detection on the entire inner wall of the flaw detection part of the pipeline.

[0098] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A pipeline defect ultrasonic detection device, characterized in that: include: Support box (1); The moving assembly (2) comprises a moving part (21) and a driving part (22), wherein the moving part (21) comprises a moving rod (211), a rotating plate (212), a moving wheel (213) and a moving spring (214); Two groups of moving rods (211) are provided, and both are provided on the support box (1). The two groups of moving rods (211) are arranged along the moving direction of the support box (1) in the pipeline. The number of moving rods (211) in each group is at least three, and both are arranged along the circumference of the support box (1). At least six rotating plates (212) and moving wheels (213) are provided, and both correspond to the moving rods (211) one by one. The rotating plate (212) is hinged at one end of the moving rod (211) and is rotatably connected to the support box (1). The moving wheel (213) is rotatably connected to the other end of the moving rod (211) and is used to abut against the inner wall of the pipeline. The moving wheel (213) is a spherical roller. At least three moving springs (214) are provided, and each of the moving springs (214) corresponds to each group of moving rods (211). The moving springs (214) are connected between two corresponding moving rods (211). The moving springs (214) are used to drive the two moving rods (211) to swing in a direction approaching each other. The driving part (22) is used to drive the moving wheel (213) to rotate relative to the moving rod (211). An adjustment assembly (3) comprises a movable adjustment part (31) and a flaw detection adjustment part (32), wherein the movable adjustment part (31) comprises an adjustment motor (311), an adjustment shaft (312), a first bevel gear (313) and a second bevel gear (314); The adjusting motor (311) is connected to the supporting box (1); the adjusting shaft (312) is connected to the output shaft of the adjusting motor (311); two first bevel gears (313) are provided and correspond one-to-one with the two groups of moving rods (211); the first bevel gears (313) are connected to the adjusting shaft (312); at least six second bevel gears (314) are provided and correspond one-to-one with the rotating plates (212); the second bevel gears (314) are connected to the rotating plates (212); the first bevel gears (313) are meshed with all the second bevel gears (314) corresponding to the corresponding group of moving rods (211); The flaw detection adjustment part (32) comprises a first adjustment disk (321), a second adjustment disk (322) and a third adjustment disk (323); the first adjustment disk (321), the second adjustment disk (322) and the third adjustment disk (323) are all connected to an adjustment shaft (312); and the adjustment shaft (312) is passed through an output shaft of an adjustment motor (311); The smearing assembly (4) comprises a smearing portion (41) and a liquid supply portion (42), wherein the smearing portion (41) comprises a smearing rod (411) and a smearing roller (412); At least one smear rod (411) and at least one smear roller (412) are provided, and the smear rod (411) and the smear roller (412) are in one-to-one correspondence. One end of the smear rod (411) is hinged on the front end of the support box (1) in the moving direction in the pipeline. A smear tension spring (4111) is connected between the smear rod (411) and the support box (1). The smear tension spring (4111) is used to drive the smear rod (411) parallel to the moving direction of the support box (1) in the pipeline. One end of the smear roller (412) is connected to the other end of the smear rod (411). A smear sponge (4121) is sleeved on the smear roller (412). The liquid supply part (42) is provided on the support box (1) and is used to supply coupling agent to the smear sponge (4121). The flaw detection adjustment part (32) is connected to the adjustment shaft (312) and is used to drive the smear rod (411) to swing toward the inner wall of the pipeline when the adjustment shaft (312) adjusts the moving rod (211), so that the smear sponge (4121) abuts against the inner wall of the pipeline; An ultrasonic probe assembly (5), comprising an ultrasonic probe (51); At least one ultrasonic probe (51) is provided, and corresponds one-to-one with the smear rod (411). The ultrasonic probe (51) is connected to the smear rod (411) and is arranged close to the smear roller (412). When the smear sponge (4121) abuts against the inner wall of the pipe, the ultrasonic probe (51) abuts against the inner wall of the pipe.

2. The pipeline defect ultrasonic detection device according to claim 1, characterized in that: The smear roller (412) is provided with a smear groove (4122) at one end close to the smear rod (411); a connecting plate (4123) is rotatably connected at the notch of the smear groove (4122); the connecting plate (4123) is hinged to the smear rod (411); a smear torsion spring (4112) is provided at the hinge between the smear rod (411) and the connecting plate (4123); the smear torsion spring (4112) is used to drive the smear roller (412) parallel to the smear rod (411); a plurality of smear holes (4124) are provided on the outer wall of the smear roller (412); the smear holes (4124) are connected to the smear groove (4122); and the liquid supply portion (42) is used to supply coupling agent into the smear groove (4122).

3. The pipeline defect ultrasonic detection device according to claim 2, characterized in that: The liquid supply portion (42) comprises a liquid supply box (421), a liquid supply push plate (422) and a liquid supply tube (423); the liquid supply box (421) is connected to the support box (1); the liquid supply push plate (422) is slidably arranged in the liquid supply box (421); a coupling agent storage cavity (4221) is formed between one side of the liquid supply push plate (422) and the liquid supply box (421); the coupling agent storage cavity (4221) is used to store coupling agent; one end of the liquid supply tube (423) is connected to the side wall of the coupling agent storage cavity (4221), and the other end is connected to the connecting plate (4123).

4. The pipeline defect ultrasonic detection device according to claim 2, characterized in that: The ultrasonic probe assembly (5) further comprises a telescopic rod (52), an ultrasonic probe spring (53), a first synchronous pulley (54), a second synchronous pulley (55) and a synchronous drive belt (56); the fixed end of the telescopic rod (52) is hinged on the smear rod (411); the movable end of the telescopic rod (52) is connected to the ultrasonic probe (51); the ultrasonic probe spring (53) is connected between the fixed end and the movable end of the telescopic rod (52) and is used to drive the telescopic rod (52) to extend; the first synchronous pulley (54) is connected to the smear rod (411); ) and the hinge shaft of the connecting plate (4123), the first synchronous pulley (54) and the connecting plate (4123) move synchronously, the second synchronous pulley (55) is connected to the fixed end of the telescopic rod (52) and the hinge shaft of the smear rod (411), the second synchronous pulley (55) and the telescopic rod (52) move synchronously, the synchronous drive belt (56) is wound around the first synchronous pulley (54) and the second synchronous pulley (55), and the flaw detection direction of the ultrasonic probe (51) is set perpendicular to the rotation axis direction of the smear roller (412).

5. The pipeline defect ultrasonic detection device according to claim 3, characterized in that: The cleaning device also comprises a cleaning assembly (6), wherein the cleaning assembly (6) comprises a cleaning portion (61) and a collecting portion (62), wherein the cleaning portion (61) comprises a cleaning rod (611) and a cleaning scraping groove (612), wherein at least one of the cleaning rod (611) and the cleaning scraping groove (612) is provided and the cleaning rod (611) and the cleaning scraping groove (612) are provided and correspond to each other, wherein one end of the cleaning rod (611) is hinged to one end of the support box (1) close to the smearing rod (411), wherein the length of the cleaning rod (611) is greater than the sum of the lengths of the smearing roller (412) and the smearing rod (411), and a cleaning tension spring (6111) is connected between the cleaning rod (611) and the support box (1), wherein the cleaning tension spring (6111) is used to drive the cleaning rod (611) to move parallel to the support box (1). ) in the moving direction in the pipeline, one end of the cleaning scraper groove (612) is hinged to the end of the cleaning rod (611) away from the support box (1), and a cleaning torsion spring (6112) is provided at the hinge between the cleaning rod (611) and the cleaning scraper groove (612), and the cleaning torsion spring (6112) is used to drive the cleaning scraper groove (612) to be parallel to the cleaning rod (611), and the flaw detection adjustment part (32) is used to drive the cleaning rod (611) to swing in the direction close to the inner wall of the pipeline when the adjustment shaft (312) adjusts the moving rod (211), so that the cleaning scraper groove (612) abuts against the inner wall of the pipeline, and the collecting part (62) is provided on the support box (1) and is used to collect dirt scraped by the cleaning scraper groove (612).

6. The pipeline defect ultrasonic detection device according to claim 5, characterized in that: The collecting portion (62) comprises a collecting box (621), a collecting filter (622), a collecting pipe (623), a collecting air pipe (624) and an air pump (625); the collecting box (621) is connected to the supporting box (1); the collecting filter (622) is connected inside the collecting box (621); a dirt storage cavity (6221) is formed between one side of the collecting filter (622) and the collecting box (621); the dirt storage cavity (6221) is used to store One end of the collecting pipe (623) is connected to the side wall of the dirt storage chamber (6221), and the other end is connected to the cleaning scraper groove (612). One end of the collecting air pipe (624) is connected to the collecting box (621). The connecting point between the collecting air pipe (624) and the collecting box (621) is opposite to the side of the collecting filter (622) away from the dirt storage chamber (6221). The other end of the collecting air pipe (624) is connected to the suction pump (625).

7. The pipeline defect ultrasonic detection device according to claim 6, characterized in that: The end of the support box (1) away from the cleaning rod (611) is provided with a recovery assembly (7), the recovery assembly (7) includes a cleaning part (71) and a recovery part (72), the cleaning part (71) includes a cleaning rod (711) and a cleaning scraping groove (712), at least one cleaning rod (711) and a cleaning scraping groove (712) are provided, and they correspond to each other one by one, one end of the cleaning rod (711) is hinged to the end of the support box (1) away from the smear rod (411), a cleaning tension spring (7111) is connected between the cleaning rod (711) and the support box (1), and the cleaning tension spring (7111) is used to drive the cleaning rod (711) to move parallel to the moving direction of the support box (1) in the pipeline. The cleaning scraper groove (712) is hinged to one end of the cleaning rod (711) away from the support box (1); a cleaning torsion spring (7112) is provided at the hinge between the cleaning rod (711) and the cleaning scraper groove (712); the cleaning torsion spring (7112) is used to drive the cleaning scraper groove (712) to be parallel to the cleaning rod (711); the flaw detection adjustment part (32) is used to drive the cleaning rod (711) to swing in a direction close to the inner wall of the pipeline when the adjustment shaft (312) adjusts the moving rod (211), so that the cleaning scraper groove (712) abuts against the inner wall of the pipeline; the recovery part (72) is provided on the liquid supply box (421) and is used to recover the coupling agent scraped by the cleaning scraper groove (712).

8. The pipeline defect ultrasonic detection device according to claim 7, characterized in that: The recovery part (72) comprises a recovery plate (721), a waterproof breathable membrane (722), a recovery pipe (723) and an exhaust pipe (724); the recovery plate (721) is connected to the liquid supply box (421) and is located on a side of the liquid supply push plate (422) away from the coupling agent storage chamber (4221); the waterproof breathable membrane (722) is connected to the liquid supply box (421) and is located on a side of the recovery plate (721) away from the liquid supply push plate (422); the waterproof breathable membrane (722) and the liquid supply box (421) are connected to each other. A coupling agent recovery chamber (7221) is formed between the liquid boxes (421), and the coupling agent recovery chamber (7221) is used to store recovered coupling agents. One end of the recovery pipe (723) is connected to the side wall of the coupling agent recovery chamber (7221), and the other end is connected to the cleaning scraper groove (712). One end of the exhaust pipe (724) is connected to the portion of the liquid supply box (421) located between the recovery plate (721) and the waterproof breathable membrane (722), and the other end is connected to the collection box (621).

9. The pipeline defect ultrasonic detection device according to claim 6, characterized in that: The liquid supply portion (42) further comprises a mounting shell (424), the mounting shell (424) being connected to the collecting box (621), a transmission shaft (425) being rotatably connected in the mounting shell (424), an impeller (426) being sleeved on the transmission shaft (425), a blade portion of the impeller (426) being located in the collecting box (621), the impeller (426) being used to drive the transmission shaft (425) to rotate by means of the airflow in the collecting box (621), one end of the transmission shaft (425) being rotatably passed through the mounting shell (424), and the transmission shaft (425) being provided with a transmission shaft (425). A worm (427) is rotatably connected to the liquid supply box (421). The worm (427) is meshed with a worm wheel (428). The worm wheel (428) is rotatably arranged in the liquid supply box (421). The meshing connection between the worm (427) and the worm wheel (428) is located at a clearance hole (4211) provided on the liquid supply box (421). The worm wheel (428) is connected to a lead screw (429). The lead screw (429) is threadedly arranged on the liquid supply push plate (422) and is rotatably connected to the liquid supply box (421).

10. The pipeline defect ultrasonic detection device according to claim 7, characterized in that: The first adjustment disk (321) and the second adjustment disk (322) are both located at one end of the support box (1) close to the smear rod (411), and the third adjustment disk (323) is located at one end of the support box (1) away from the smear rod (411). The first adjustment disk (321) is connected to at least one first push rod (3211), and the first push rod (3211) corresponds to the smear rod (411) one by one, and is used to push the smear rod (411) so that the smear sponge (4121) abuts against the inner wall of the pipe. At least one second push rod (3221) is connected to the section disk (322), the second push rod (3221) corresponds one-to-one with the cleaning rod (611), and is used to push the cleaning rod (611) so that the cleaning scraping groove (612) abuts against the inner wall of the pipeline. At least one third push rod (3231) is connected to the third adjustment disk (323), the third push rod (3231) corresponds one-to-one with the cleaning rod (711), and is used to push the cleaning rod (711) so that the cleaning scraping groove (712) abuts against the inner wall of the pipeline.

Images