Pipeline defect ultrasonic detection device

Abstract

The invention relates to a pipeline defect ultrasonic detection device, and relates to the technical field of pipeline detection.The pipeline defect ultrasonic detection device comprises a supporting box, a moving assembly, an adjusting assembly, a smearing assembly and an ultra-detection assembly, the moving assembly, the adjusting assembly and the smearing assembly are all arranged on the supporting box, and the ultra-detection assembly is arranged on the smearing assembly; the moving assembly is used for linearly and rapidly driving the supporting box to move in the pipeline and spirally and slowly driving the supporting box to move in the pipeline, the adjusting assembly is used for enabling the moving assembly to switch a linear rapid driving mode and a spiral slow driving mode, and the smearing assembly is used for smearing a coupling agent. The super-detection assembly is used for conducting spiral flaw detection on the inner wall of the pipeline in the process that the smearing assembly smears the coupling agent. The device has the effect that the ultrasonic probe can carry out comprehensive flaw detection on the whole inner wall of the flaw detection part of the pipeline.

Description

Technical Field

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

[0002] During long-term use, defects are easily formed inside the pipeline. In order to avoid pipeline leakage caused by defects inside the pipeline, it is necessary to inspect the inside of the pipeline. In the prior art, ultrasonic flaw detection is usually used to detect pipelines.

[0003] A Chinese patent with publication number CN116539727B discloses an ultrasonic detection device for pipeline defects, which moves an ultrasonic probe to the inside of a pipeline by a walking trolley. When inspecting the pipeline, a coupling agent is first applied to the inner wall of the pipeline by a coupling agent coating mechanism, and then the inner wall of the pipeline is ultrasonically inspected by the ultrasonic probe. The coupling agent is then recovered by a coupling agent cleaning mechanism, so that the ultrasonic probe can automatically apply coupling agent before inspection.

[0004] In the above scheme, although it is convenient to quickly move the ultrasonic probe to the inspection part of the pipeline for inspection, since the walking trolley can only move along the axis of the pipeline, it is difficult for the ultrasonic probe to conduct comprehensive inspection of the entire inner wall of the inspection part of the pipeline. Summary of the invention

[0005] In order to enable the ultrasonic probe to perform comprehensive flaw detection on the entire inner wall of the pipeline flaw detection part, the present application provides a pipeline defect ultrasonic detection device.

[0006] The present application provides a pipeline defect ultrasonic detection device, which adopts the following technical solution: A pipeline defect ultrasonic detection device, comprising: Support box; The moving assembly comprises a moving part and a driving part, wherein the moving part comprises a moving rod, a rotating plate, a moving wheel and a moving spring; The adjustment assembly includes a moving adjustment part and a flaw detection adjustment part, wherein the moving adjustment part includes an adjustment motor, an adjustment shaft, a first bevel gear and a second bevel gear; The coating assembly comprises a coating part and a liquid supply part, wherein the coating part comprises a coating rod and a coating roller; Ultrasonic probe components, including ultrasonic probes; in, There are two groups of moving rods, and both are arranged on the support box. The two groups of moving rods are arranged along the moving direction of the support box in the pipeline. The number of moving rods in each group is at least three, and they are all arranged along the circumference of the support box. There are at least six rotating plates and moving wheels, and they all correspond to the moving rods one by one. 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. At least three moving springs are provided, and they correspond to each group of moving rods one by one. The moving springs are connected between two corresponding moving rods. The moving springs are used to drive the two moving rods to swing towards each other, and the driving part is used to drive the moving wheel to rotate relative to the moving rod. The adjusting motor is connected to the supporting box, the adjusting shaft is connected to the output shaft of the adjusting motor, two first bevel gears are provided, and they correspond to the two groups of moving rods one by one, the first bevel gears are connected to the adjusting shaft, at least six second bevel gears are provided, and they correspond to the rotating plates one by one, the second bevel gears are connected to the rotating plate, and the first bevel gears are meshed with all the second bevel gears corresponding to the corresponding group of moving rods; At least one smear rod and smear roller are provided, and they correspond one to one. One end of the smear rod is hinged on the front end of the support box in the moving direction in the pipeline. A smear tension spring is connected between the smear rod and the support box. The smear tension spring is used to drive the smear rod parallel to the moving direction of the support box in the pipeline. One end of the smear roller is connected to the other end of the smear rod. A smear sponge is sleeved on the smear roller. The liquid supply part is provided on the support box and is used to supply coupling agent to the smear sponge. The flaw detection adjustment part is connected to the adjustment shaft and is used to drive the smear rod to swing toward the inner wall of the pipeline when the adjustment shaft adjusts the moving rod, so that the smear sponge abuts against the inner wall of the pipeline; At least one ultrasonic probe is provided and corresponds to the smear rod one by one. The ultrasonic probe is connected to the smear rod and is arranged close to the smear roller. When the smear sponge abuts against the inner wall of the pipe, the ultrasonic probe abuts against the inner wall of the pipe.

[0007] By adopting the above technical solution, the moving rod supports the support box in the pipeline with the help of the elastic force of the moving spring, and the driving part drives the moving wheel to rotate so that the support box can be quickly moved to the flaw detection position of the pipeline, and 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, and the rotating plate drives the moving rod to swing to adjust the direction of the rotation axis of the moving wheel, so that the ultrasonic detection device can move spirally in the pipeline.

[0008] When the adjusting shaft adjusts the moving wheel, the adjusting shaft can drive the coating rod to swing toward the direction close to the inner wall of the pipe through the flaw detection adjusting part, so that the coating sponge on the coating roller abuts against the inner wall of the pipe, and the coupling agent supplied to the coating sponge by the liquid supply part can be applied to the inner wall of the pipe when the coating sponge moves spirally. The ultrasonic probe can be attached to the inner wall of the pipe along with the movement of the coating sponge, and the ultrasonic probe performs flaw detection on the inner wall of the pipe with the help of the coupling agent applied by the coating sponge. Since the ultrasonic detection device moves spirally as a whole in the pipe, the ultrasonic probe can perform spiral flaw detection against the wall, thereby enabling the ultrasonic probe to perform comprehensive flaw detection on the entire inner wall of the flaw detection part of the pipe.

[0009] Optionally, an application groove is provided at one end of the application roller close to the application rod, a connecting plate is rotatably connected to the notch of the application groove, the connecting plate is hinged to the application rod, an application torsion spring is provided at the hinge of the application rod and the connecting plate, the application torsion spring is used to drive the application roller parallel to the application rod, a plurality of application holes are provided on the outer side wall of the application roller, the application holes are connected to the application groove, and the liquid supply part is used to supply coupling agent into the application groove.

[0010] By adopting the above technical solution, 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 the coupling agent flows from the coating hole to the coating sponge, so that the coupling agent can be easily and evenly adsorbed on the coating sponge, thereby making it easy for the coating sponge to evenly coat the coupling agent on the inner wall of the pipe.

[0011] Optionally, the liquid supply part includes a liquid supply box, a liquid supply push plate and a liquid supply tube. 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 coupling agent. One end of the liquid supply tube is connected to the side wall of the coupling agent storage cavity, and the other end is connected to the connecting plate.

[0012] By adopting the above technical solution, the liquid supply push plate is slid to reduce the space of the coupling agent storage chamber, so that the coupling agent in the coupling agent storage chamber can be squeezed into the liquid supply tube, and the coupling agent can flow into the coating groove along the liquid supply tube to supply the coupling agent to the coating groove.

[0013] Optionally, the ultrasonic detection assembly also 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 on the applicator 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 applicator rod and the connecting plate, the first synchronous pulley moves synchronously with the connecting plate, the second synchronous pulley is connected to the fixed end of the telescopic rod and the hinge shaft of the applicator rod, 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, and the flaw detection direction of the ultrasonic probe is set perpendicular to the rotation axis direction of the applicator roller.

[0014] By adopting the above technical scheme, when the coating roller rotates due to contact with the inner wall of the pipe, the connecting plate can drive the first synchronous pulley to rotate, and 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 flaw detection direction of the ultrasonic probe can always be perpendicular to the direction of the rotation axis of the coating roller, so that the ultrasonic probe can perform flaw detection perpendicular to the inner wall of the pipe; when the ultrasonic probe is in contact with the inner wall of the pipe, the ultrasonic probe can drive the telescopic rod to contract to compress the ultra-detection spring, which, on the one hand, makes it difficult for the ultrasonic probe to collide with the inner wall of the pipe and be damaged, and on the other hand, enables the ultrasonic probe to stably adhere to the inner wall of the pipe under the elastic force of the ultra-detection spring.

[0015] Optionally, it also includes a cleaning component, which includes a cleaning part and a collecting part, the cleaning part including a cleaning rod and a cleaning scraper groove, at least one of the cleaning rod and the cleaning scraper groove is provided, and they correspond one to one, one end of the cleaning rod is hinged to an end of the support box close to the smear rod, the length of the cleaning rod is greater than the sum of the lengths of the smear roller and the smear rod, 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 scraper groove is hinged to an end of the cleaning rod away from the support box, a cleaning torsion spring is provided at the hinge of the cleaning rod and the cleaning scraper groove, the cleaning torsion spring is used to drive the cleaning scraper groove to be parallel to the cleaning rod, the flaw detection adjustment part is used to drive the cleaning rod to swing in a direction close to the inner wall of the pipeline when the adjusting shaft adjusts the moving rod, so that the cleaning scraper groove abuts against the inner wall of the pipeline, and the collecting part is provided on the support box, and is used to collect dirt scraped by the cleaning scraper groove.

[0016] 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 in the direction close to the inner wall of the pipe, so that the cleaning scraper groove abuts against the inner wall of the pipe, and the cleaning scraper groove can scrape the dirt on the inner wall of the pipe into itself during the spiral movement, and the collecting part collects the dirt in the cleaning scraper groove, so that the inner wall of the pipe can be cleaned during flaw detection.

[0017] Optionally, the collecting part includes a collecting box, a collecting filter, a collecting pipe, a collecting air pipe and an exhaust pump, the collecting box is connected to the supporting box, the collecting filter is connected in the collecting box, a dirt storage cavity is formed between one side of the collecting filter and the collecting box, the dirt storage cavity is used to store dirt, one end of the collecting pipe is connected to the side wall of the dirt storage cavity, and the other end is connected to the cleaning scraper groove, one end of the collecting air pipe is connected to the collecting box, the connection point of the collecting air pipe and the collecting box is opposite to the side of the collecting filter away from the dirt storage cavity, and the other end of the collecting air pipe is connected to the exhaust pump.

[0018] By adopting the above technical solution, during the process of scraping dirt from the cleaning scraper groove, the vacuum pump is started, and the vacuum pump sucks the air in the collection box so that negative pressure can be formed in the collection box. Under the action of negative pressure, the air at the cleaning scraper groove will be sucked into the collection box, and the air can carry the dirt in the cleaning scraper groove from the collection pipe into the dirt storage chamber. The collection filter intercepts the dirt so that the dirt can remain in the dirt storage chamber, so that the dirt scraped from the cleaning scraper groove can be collected in a centralized manner.

[0019] Optionally, a recovery component is provided at one end of the support box away from the cleaning rod, and the recovery component includes a cleaning part and a recovery part. The cleaning part includes a cleaning rod and a cleaning scraper groove. Both the cleaning rod and the cleaning scraper groove are provided with at least one and correspond to each other one to one. One end of the cleaning rod is hinged to the end of the support box away from the coating rod. 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 scraper groove is hinged to the end of the cleaning rod away from the support box. A cleaning torsion spring is provided at the hinge of the cleaning rod and the cleaning scraper groove. The cleaning torsion spring is used to drive the cleaning scraper groove to be parallel to the cleaning rod. The flaw detection adjustment part is used to drive the cleaning rod to swing in a direction close to the inner wall of the pipeline when the adjusting shaft adjusts the moving rod, so that the cleaning scraper groove abuts against the inner wall of the pipeline. The recovery part is provided on the liquid supply box, and is used to recover the coupling agent scraped off by the cleaning scraper groove.

[0020] 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 in the direction close to the inner wall of the pipe, so that the cleaning scraper groove abuts against the inner wall of the pipe, and the cleaning scraper groove can scrape the coupling agent coated on the inner wall of the pipe into itself during the spiral movement, and the recovery part recovers the coupling agent in the cleaning scraper groove, so that the coupling agent can be recycled.

[0021] Optionally, the recovery part includes a recovery plate, a waterproof breathable membrane, a recovery pipe and an exhaust pipe, the recovery plate is connected in the liquid supply box and is located on the side of the liquid supply push plate away from the coupling agent storage chamber, the waterproof breathable membrane is connected in 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 chamber is formed between the waterproof breathable membrane and the liquid supply box, the coupling agent recovery chamber is used to store recovered coupling agent, one end of the recovery pipe is connected to the side wall of the coupling agent recovery chamber, and the other end is connected to the cleaning scraper groove, one end of the exhaust pipe is connected to the portion of the liquid supply box located between the recovery plate and the waterproof breathable membrane, and the other end is connected to the collection box.

[0022] By adopting the above technical solution, when the vacuum pump sucks the air in the collection box, the vacuum pump can also suck the air between the recovery plate and the waterproof breathable membrane and the air in the coupling agent recovery chamber through the vacuum pipe, so that a negative pressure is formed in the coupling agent recovery chamber. Under the action of the negative pressure, the air at the cleaning scraper groove will be sucked into the liquid supply box, and the air can carry the coupling agent in the cleaning scraper groove from the recovery pipe into the coupling agent recovery chamber. The waterproof breathable membrane intercepts the coupling agent, so that the coupling agent can remain in the coupling agent recovery chamber, thereby allowing the coupling agent to be recovered.

[0023] Optionally, the liquid supply part also includes a mounting shell, which is connected to the collecting box, and a transmission shaft is rotatably connected in the mounting shell, and an impeller is sleeved on the transmission shaft, and part of the impeller blades is located in the collecting box, and the impeller is used to drive the transmission shaft to rotate with the help of the airflow in the collecting box. One end of the transmission shaft rotates to pass through the mounting shell, and is connected to a worm with a drive belt, the worm is rotatably connected to the liquid supply box, the worm is meshed with a worm wheel, and the worm wheel is rotatably arranged in the liquid supply box, and the meshing connection between the worm and the worm wheel is located at a giveway hole opened on the liquid supply box, and the worm wheel is connected to a lead screw, and the lead screw thread is passed through the liquid supply push plate and is rotatably connected to the liquid supply box.

[0024] By adopting the above technical solution, when the vacuum pump sucks the air in the collection box, the airflow 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 wheel to rotate, the worm wheel drives the lead screw to rotate, and the lead screw drives the liquid supply push plate to slide. Under the reduction transmission action of the worm wheel and the worm, the liquid supply push plate can slowly squeeze the coupling agent, so that the coupling agent can be slowly supplied to the coating groove with the help of the airflow formed by the vacuum in the collection box.

[0025] Optionally, the flaw detection adjustment part includes a first adjusting disk, a second adjusting disk and a third adjusting disk, the first adjusting disk, the second adjusting disk and the third adjusting disk are all connected to an adjusting shaft, the adjusting shaft is passed through an output shaft of an adjusting motor, the first adjusting disk and the second adjusting disk are both located at an end of the support box close to the smear rod, and the third adjusting disk is located at an end of the support box away from the smear rod, at least one first push rod is connected to the first adjusting disk, the first push rod corresponds one-to-one with the smear rod and is used to push the smear rod so that the smear sponge abuts against the inner wall of the pipe, at least one second push rod is connected to the second adjusting disk, the second push rod corresponds one-to-one with the cleaning rod and is used to push the cleaning rod so that the cleaning scraping groove abuts against the inner wall of the pipe, and at least one third push rod is connected to the third adjusting disk, the third push rod corresponds one-to-one with the cleaning rod and is used to push the cleaning rod so that the cleaning scraping groove abuts against the inner wall of the pipe.

[0026] By adopting the above technical solution, when the adjusting shaft adjusts the rotation axis direction of the moving wheel, the adjusting shaft can synchronously drive the first adjusting disk, the second adjusting disk and the third adjusting disk to rotate, the first adjusting disk drives the first push rod to push the smearing rod to swing, the second adjusting disk drives the second push rod to push the cleaning rod to swing, and the third adjusting disk drives the third push rod to push the cleaning rod to swing, so that the smearing sponge, the cleaning scraper groove and the cleaning scraper groove can all abut against the inner wall of the pipe.

[0027] In summary, the present application includes at least one of the following beneficial technical effects: 1. By setting up the support box, moving assembly, adjusting assembly, coating assembly and ultrasonic detection assembly, 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 pipeline flaw detection part; 2. By setting up a 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 easy to affect the flaw detection; 3. By setting up a recycling component, the coupling agent applied on the inner wall of the pipe can be recycled. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application; Figure 2 It is a schematic diagram of the structure of the liquid supply part and the collection part; Figure 3 yes Figure 1 Magnified view at A in the middle; Figure 4 yes Figure 1 Magnified view at B in the middle; Figure 5 It is an exploded view of the coating groove, connecting plate and coating hole; Figure 6 It is a structural diagram of the super-exploration spring; Figure 7 yes Figure 1 Enlarged view at center C; Figure 8 yes Figure 1 Magnified view at D in the middle; Fig. 9 yes Figure 2 Magnified view at E in the middle.

[0029] Description of reference numerals: 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. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-9 This application is described in further detail.

[0031] The present application embodiment discloses a pipeline defect ultrasonic detection device. Figure 1A pipeline defect ultrasonic detection device includes a support box 1, a moving component 2, an adjustment component 3, a coating component 4 and an ultrasonic detection component 5.

[0032] Reference Figure 1 and Figure 2 The support box 1 is in the shape of a rectangular box. The moving assembly 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 assembly 3 includes a moving adjusting part 31 and a flaw detection adjusting part 32. The moving adjusting part 31 includes an adjusting motor 311, an adjusting shaft 312, a first bevel gear 313 and a second bevel gear 314. The coating assembly 4 includes a coating part 41 and a liquid supply part 42. The coating part 41 includes a coating rod 411 and a coating roller 412. The ultra-detection assembly 5 includes an ultrasonic probe 51.

[0033] Reference Figure 1 , 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 four, and they are all arranged along the circumference of the support box 1. There are eight rotating plates 212 and moving wheels 213, and each corresponds to the moving rod 211 one by one. The rotating plate 212 is hinged at 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 rotates with the rotating plate 212, and the direction of the rotation axis of the moving wheel 213 can be adjusted. Since the moving wheel 213 is a spherical roller, the moving wheel 213 is easy to abut against the inner wall of the pipeline after adjusting the direction of the rotation axis, so that the support box 1 can move linearly and quickly in the pipeline, and can move spirally and slowly in the pipeline.

[0034] Four moving springs 214 are provided, and 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 adapt to being supported in pipelines with different diameters.

[0035] Reference Figure 3The driving unit 22 is used to drive the moving wheel 213 to rotate relative to the moving rod 211. In the present application, the driving unit 22 includes a moving motor 221 and a transmission wheel 222. There are eight moving motors 221 and eight transmission wheels 222, and each of the moving motors 221 and the transmission wheels 222 corresponds to the moving rod 211. The moving motor 221 is fixedly connected to the moving rod 211, and 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.

[0036] Reference Figure 2 , the adjusting motor 311 is fixedly connected to the outer wall of the support box 1, and 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. 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 located in the support box 1 and are fixedly connected to the adjusting shaft 312. Eight second bevel gears 314 are provided, and correspond one-to-one with the rotating plate 212. The second bevel gears 314 are located in the support box 1, and the second bevel gears 314 are fixedly connected to the rotating plate 212. The first bevel gear 313 is meshed with all the second bevel gears 314 corresponding to the corresponding group of moving rods 211, and the two first bevel gears 313 drive the second bevel gears 314 meshed with themselves to rotate in the same direction. 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 rotating axis of the moving wheel 213 .

[0037] Reference Figure 1 and Figure 4 There are three smear rods 411 and three smear rollers 412, and they correspond one to one. 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 fixedly connected between the smear rod 411 and the support box 1. The smear tension spring 4111 is used to drive the smear 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 smear rod 411 can be away from the inner wall of the pipeline under the elastic force of the smear tension spring 4111 to avoid hindering the movement of the support box 1. One end of the smear roller 412 is connected to the other end of the smear rod 411, and a smear sponge 4121 is sleeved on the smear roller 412. The liquid supply part 42 is arranged on the support box 1, and is used to supply coupling agent to the smear sponge 4121. The liquid supply part 42 supplies the coupling agent to the smear sponge 4121, and the smear rod 411 is swung to overcome the elastic force of the smear tension spring 4111, so that the smear sponge 4121 abuts against the inner wall of the pipe, and the smear sponge 4121 can smear the coupling agent on the inner wall of the pipe.

[0038] Reference Figure 1The flaw detection adjustment part 32 is connected to the adjustment shaft 312, and is used to drive the coating rod 411 to swing toward the direction close to the inner wall of the pipe when the adjustment shaft 312 adjusts the moving rod 211, so that the coating sponge 4121 abuts against the inner wall of the pipe, so that the timing of the coating sponge 4121 abutting against the inner wall of the pipe can be adapted to the adjustment timing of the rotation axis direction of the moving wheel 213, and the swing of the coating rod 411 can be assisted by the driving force formed by the rotation of the adjustment shaft 312.

[0039] Three ultrasonic probes 51 are provided, and correspond one to one with the application rods 411. The ultrasonic probes 51 are connected to the application rods 411 and are arranged close to the application roller 412. When the application sponge 4121 abuts against the inner wall of the pipe, the ultrasonic probe 51 is attached to the inner wall of the pipe, so that the ultrasonic probe 51 can adhere to the wall for flaw detection with the help of coupling agent, thereby improving the flaw detection effect of the ultrasonic probe 51.

[0040] When in use, the moving rod 211 supports the support box 1 in the pipeline with the help of the elastic force of the moving spring 214, and the moving motor 221 drives the moving wheel 213 to rotate through the transmission wheel 222, so that the support box 1 can be quickly moved to the flaw detection position of the pipeline, and then the adjustment motor 311 is started, and the adjustment motor 311 drives the adjustment shaft 312 to rotate, and 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, and the second bevel gear 314 drives the rotating plate 212 to rotate, and the rotating plate 212 drives the moving rod 211 to swing to adjust the direction of the rotation axis of the moving wheel 213, so that the ultrasonic detection device can move spirally in the pipeline.

[0041] When the adjusting shaft 312 adjusts the moving wheel 213, the adjusting shaft 312 can drive the coating rod 411 to swing toward the direction close to the inner wall of the pipe through the flaw detection adjustment part 32, so that the coating sponge 4121 on the coating roller 412 abuts against the inner wall of the pipe, and the coupling agent supplied to the coating sponge 4121 by the liquid supply part 42 can be smeared on the inner wall of the pipe when the coating sponge 4121 moves spirally. The ultrasonic probe 51 can be attached to the inner wall of the pipe as the coating sponge 4121 moves spirally, and the ultrasonic probe 51 can be attached to the inner wall of the pipe with the movement of the coating sponge 4121. The ultrasonic probe 51 performs flaw detection on the inner wall of the pipe with the help of the coupling agent smeared on the coating sponge 4121, and since the ultrasonic detection device moves spirally as a whole in the pipe, the ultrasonic probe 51 can perform spiral flaw detection against the wall, so that the ultrasonic probe 51 can perform comprehensive flaw detection on the entire inner wall of the flaw detection part of the pipe.

[0042] Reference Figure 5In the present application, an application groove 4122 is provided at one end of the application roller 412 close to the application rod 411, and a connecting plate 4123 is rotatably connected to the notch of the application groove 4122, and the connecting plate 4123 is hinged to the application rod 411, and an application torsion spring 4112 is provided at the hinge of the application rod 411 and the connecting plate 4123, and the two ends of the application torsion spring 4112 are respectively fixedly connected to the application rod 411 and the connecting plate 4123, and the application torsion spring 4112 is used to drive the application roller 412 to be parallel to the application rod 411, so that the application sponge 4121 can stably abut against the inner wall of the pipe, and a plurality of application holes 4124 are provided on the outer wall of the application roller 412, and the application holes 4124 are connected to the application groove 4122, and the liquid supply portion 42 is used to supply coupling agent into the application groove 4122.

[0043] The liquid supply part 42 supplies the coupling agent into the coating groove 4122, and the coupling agent flows from the coating groove 4122 to each coating hole 4124, and the coupling agent flows from the coating hole 4124 to the coating sponge 4121, so that the coupling agent can be easily and evenly adsorbed on the coating sponge 4121, thereby making it easy for the coating sponge 4121 to evenly coat the coupling agent on the inner wall of the pipe.

[0044] Specifically, refer to Figure 2 The liquid supply part 42 includes a liquid supply box 421 , a liquid supply push plate 422 and a liquid supply tube 423 .

[0045] Reference Figure 2 and Figure 4 The liquid supply box 421 is fixedly connected to the inner wall of the support box 1, and 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 chamber 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 chamber 4221 is used to store the coupling agent. One end of the liquid supply tube 423 is connected to the side wall of the coupling agent storage chamber 4221, and the other end is connected to the connecting plate 4123, and the liquid supply tube 423 is fixedly penetrated on the support box 1.

[0046] The liquid supply push plate 422 is slid to reduce the space of the coupling agent storage chamber 4221 so that the coupling agent in the coupling agent storage chamber 4221 can be squeezed into the liquid supply tube 423 , and the coupling agent can flow into the coating groove 4122 along the liquid supply tube 423 to supply the coupling agent to the coating groove 4122 .

[0047] Specifically, refer to Figure 4 and Figure 6 The super-probe assembly 5 also includes a telescopic rod 52, a super-probe spring 53, a first synchronous pulley 54, a second synchronous pulley 55 and a synchronous drive belt 56.

[0048] The fixed end of the telescopic rod 52 is hinged on the side of the coating rod 411 close to the inner wall of the pipe, and the movable end of the telescopic rod 52 is fixedly connected to the ultrasonic probe 51. The ultrasonic probe 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 probe 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, and the first synchronous pulley 54 and the connecting plate 4123 act synchronously. The second synchronous pulley 55 is fixedly connected to the fixed end of the telescopic rod 52 and the hinge shaft of the coating rod 411, and the second synchronous pulley 55 acts 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 flaw detection direction of the ultrasonic probe 51 is set perpendicular to the rotation axis direction of the coating roller 412.

[0049] Among them, for the hinge axis between the smear rod 411 and the connecting plate 4123, the hinge axis is fixedly connected to the connecting plate 4123; for the hinge axis between the fixed end of the telescopic rod 52 and the smear rod 411, the hinge axis is fixedly connected to the fixed end of the telescopic rod 52.

[0050] When the smear roller 412 rotates due to contact with the inner wall of the pipe, the connecting plate 4123 can drive the first synchronous pulley 54 to rotate, and 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 flaw detection direction of the ultrasonic probe 51 can always be perpendicular to the direction of the rotation axis of the smear roller 412, so that the ultrasonic probe 51 can perform flaw detection perpendicular to the inner wall of the pipe; when the ultrasonic probe 51 is in contact with the inner wall of the pipe, the ultrasonic probe 51 can drive the telescopic rod 52 to contract to compress the ultra-detection spring 53, which, on the one hand, makes it difficult for the ultrasonic probe 51 to collide with the inner wall of the pipe and be damaged, and on the other hand, enables the ultrasonic probe 51 to stably adhere to the inner wall of the pipe under the elastic force of the ultra-detection spring 53.

[0051] Reference Figure 1 In order to prevent the dirt on the inner wall of the pipeline from affecting the flaw detection, a pipeline defect ultrasonic detection device also includes a cleaning component 6, the cleaning component 6 includes a cleaning part 61 and a collecting part 62, and the cleaning part 61 includes a cleaning rod 611 and a cleaning scraping groove 612.

[0052] There are three cleaning rods 611 and three cleaning scraper grooves 612, and they correspond one to one. One end of the cleaning rod 611 is hinged on the end of the support box 1 close to the smear rod 411. The length of the cleaning rod 611 is greater than the sum of the lengths of the smear roller 412 and the smear rod 411. The cleaning rod 611 and the smear 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 be 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.

[0053] Reference Figure 1 and Figure 7 One end of the cleaning scraper groove 612 is hinged to the end of the cleaning rod 611 away from the support box 1. A cleaning torsion spring 6112 is provided at the hinge of the cleaning rod 611 and the cleaning scraper groove 612. The two ends of the cleaning torsion spring 6112 are respectively fixed to the cleaning rod 611 and the cleaning scraper groove 612. The cleaning torsion spring 6112 is used to drive the cleaning scraper groove 612 to be parallel to the cleaning rod 611, so that the cleaning scraper groove 612 can stably abut against the inner wall of the pipe. The flaw detection adjustment part 32 is used to drive the cleaning rod 611 to swing toward the direction close to the inner wall of the pipe when the adjustment shaft 312 adjusts the moving rod 211, so that the cleaning scraper groove 612 abuts against the inner wall of the pipe. The collecting part 62 is arranged on the support box 1, and is used to collect the dirt scraped by the cleaning scraper groove 612.

[0054] 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 toward the direction close to the inner wall of the pipe, so that the cleaning scraper groove 612 abuts against the inner wall of the pipe. The cleaning scraper groove 612 can scrape the dirt on the inner wall of the pipe into itself during the spiral movement, and the collecting part 62 collects the dirt in the cleaning scraper groove 612, so that the inner wall of the pipe can be cleaned during flaw detection.

[0055] Further, refer to Figure 1 and Figure 2 The collecting part 62 includes a collecting box 621 , a collecting filter 622 , a collecting pipe 623 , a collecting air pipe 624 and an air pump 625 .

[0056] The collection box 621 is fixedly connected to the inner wall of the support box 1 and is arranged opposite to the liquid supply box 421. The collection filter 622 is fixedly connected to the collection box 621, and a dirt storage chamber 6221 is formed between the side of the collection filter 622 close to the cleaning rod 611 and the collection box 621, and the dirt storage chamber 6221 is used to store dirt. One end of the collection 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, and the collection pipe 623 is fixedly penetrated on the support box 1. One end of the collection air pipe 624 is connected to the collection box 621, and the connection point between the collection air pipe 624 and the collection box 621 is opposite to the side of the collection filter 622 away from the dirt storage chamber 6221, and the other end of the collection air pipe 624 is connected to the suction pump 625, and the collection air pipe 624 is fixedly penetrated on the support box 1.

[0057] During the process of scraping dirt from the cleaning scraper groove 612, the vacuum pump 625 is started, and the vacuum pump 625 sucks the air in the collection box 621, so that a negative pressure can be formed in the collection box 621. Under the action of the negative pressure, the air at the cleaning scraper groove 612 will be sucked into the collection box 621, and the air can carry the dirt in the cleaning scraper groove 612 from the collection pipe 623 into the dirt storage chamber 6221, and the collection filter 622 intercepts the dirt so that the dirt can remain in the dirt storage chamber 6221, so that the dirt scraped by the cleaning scraper groove 612 can be collected in a centralized manner.

[0058] Reference Figure 1 In order to recycle the coupling agent applied on the inner wall of the pipe, a recovery component 7 is provided at one end of the support box 1 away from the cleaning rod 611. The recovery component 7 includes a cleaning part 71 and a recovery part 72. The cleaning part 71 includes a cleaning rod 711 and a cleaning scraper groove 712.

[0059] There are three cleaning rods 711 and three cleaning scraper grooves 712, and they correspond one to one. One end of the cleaning rod 711 is hinged on the end of the support box 1 away from the smear 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 in the pipeline. In the non-detection section of the pipeline, the cleaning rod 711 can be 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.

[0060] Reference Figure 1 and Figure 8One end of the cleaning scraper groove 712 is hinged to the end of the cleaning rod 711 away from the support box 1, and a cleaning torsion spring 7112 is provided at the hinge of the cleaning rod 711 and the cleaning scraper groove 712. The two ends of the cleaning torsion spring 7112 are respectively fixed to 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, so that the cleaning scraper 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 toward 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 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 off by the cleaning scraper groove 712.

[0061] 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 toward the direction close to the inner wall of the pipe, so that the cleaning scraper groove 712 abuts against the inner wall of the pipe, and the cleaning scraper groove 612 can scrape the coupling agent coated on the inner wall of the pipe into its own interior during the spiral movement, and the recovery part 72 recovers the coupling agent in the cleaning scraper groove 712, so that the coupling agent can be recycled.

[0062] Further, refer to Figure 2 and Fig. 9 The recovery part 72 includes a recovery plate 721 , a waterproof breathable membrane 722 , a recovery pipe 723 and an exhaust pipe 724 .

[0063] The recovery plate 721 is fixedly connected to the liquid supply box 421 and is located on the side of the liquid supply push plate 422 away from the coupling agent storage chamber 4221. The waterproof breathable membrane 722 is fixedly connected to 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 chamber 7221 is formed between the waterproof breathable membrane 722 and the liquid supply box 421. The coupling agent recovery chamber 7221 is used to store the recovered coupling agent. 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, and the recovery pipe 723 is fixedly penetrated on the support box 1. One end of the exhaust pipe 724 is connected to the part 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.

[0064] When the vacuum pump 625 sucks the air in the collection box 621, the vacuum pump 625 can also suck the air between the recovery plate 721 and the waterproof breathable membrane 722 and the air in the coupling agent recovery chamber 7221 through the vacuum pipe 724, so as to form a negative pressure in the coupling agent recovery chamber 7221. Under the action of the negative pressure, the air at the cleaning scraper groove 712 will be sucked into the liquid supply box 421, and the air can carry the coupling agent in the cleaning scraper groove 712 from the recovery pipe 723 into the coupling agent recovery chamber 7221. The waterproof breathable membrane 722 intercepts the coupling agent, so that the coupling agent can remain in the coupling agent recovery chamber 7221, thereby allowing the coupling agent to be recovered.

[0065] Reference Fig. 9 In order to enable the driving force of the liquid supply push plate 422 to utilize the airflow formed by the air extraction in the collection box 621 to reduce the driving source and thus reduce energy consumption, the liquid supply part 42 further includes a mounting shell 424, which is connected to the collection box 621 on a side close to the liquid supply box 421, and a transmission shaft 425 is rotatably connected in the mounting shell 424, and an impeller 426 is fixedly sleeved on the transmission shaft 425, and a portion of the impeller 426 blades is located in the collection box 621, and the impeller 426 is used to drive the transmission shaft 425 with the help of the airflow in the collection box 621. 25 rotates, one end of the transmission shaft 425 rotates to pass through the mounting shell 424, and is connected with a worm 427 through a belt transmission, the 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 connected 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 fixedly connected with 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.

[0066] When the vacuum pump 625 sucks the air in the collection box 621, the airflow 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 wheel 428 to rotate, the worm wheel 428 drives the lead screw 429 to rotate, and the lead screw 429 drives the liquid supply push plate 422 to slide. Under the deceleration transmission action of the worm wheel 428 and the worm 427, the liquid supply push plate 422 can slowly squeeze the coupling agent, so that the coupling agent can be slowly supplied to the coating groove 4122 with the help of the airflow formed by the vacuum in the collection box 621.

[0067] Specifically, refer to Figure 1 The flaw detection adjustment part 32 includes a first adjustment disk 321 , a second adjustment disk 322 and a third adjustment disk 323 .

[0068] The first adjustment disk 321, the second adjustment disk 322 and the third adjustment disk 323 are all circular disks and are fixedly connected to the adjustment shaft 312. The adjustment shaft 312 is fixedly penetrated through the output shaft of the adjustment motor 311. 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 application rod 411, and the third adjustment disk 323 is located at the end of the support box 1 away from the application rod 411.

[0069] Three first push rods 3211 are fixedly connected to the first adjustment disk 321. The first push rods 3211 correspond to the smear rods 411 one by one. The first push rods 3211 and the diameter direction of the first adjustment disk 321 are set at an angle. The first push rods 3211 are used to push the smear rods 411 so that the smear sponge 4121 abuts against the inner wall of the pipe. 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 and the diameter direction of the second adjustment disk 322 are set at an angle. The second push rods 3221 are used to push the cleaning rods 611 so that the cleaning scraping grooves 612 abut against the inner wall of the pipe. Three third push rods 3231 are fixedly connected to the third adjusting 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 adjusting disk 323. The third push rods 3231 are used to push the cleaning rods 711 so that the cleaning scraper grooves 712 abut against the inner wall of the pipe.

[0070] When the adjusting shaft 312 adjusts the direction of the rotation axis of the moving wheel 213, the adjusting shaft 312 can synchronously drive the first adjusting disk 321, the second adjusting disk 322 and the third adjusting disk 323 to rotate. The first adjusting disk 321 drives the first push rod 3211 to push the smearing rod 411 to swing, the second adjusting disk 322 drives the second push rod 3221 to push the cleaning rod 611 to swing, and the third adjusting disk 323 drives the third push rod 3231 to push the cleaning rod 711 to swing, so that the smearing sponge 4121, the cleaning scraper groove 612 and the cleaning scraper groove 712 can all abut against the inner wall of the pipe.

[0071] The implementation principle of an ultrasonic detection device for pipeline defects in an embodiment of the present application is as follows: when in use, eight moving rods 211 support the support box 1 in the pipeline, and the moving motor 221 is started. The moving motor 221 drives the moving wheel 213 to rotate, so that the ultrasonic detection device is quickly moved to the inspection position of the pipeline, and then the adjustment motor 311 is started, and the adjustment motor 311 drives the adjustment shaft 312 to rotate, and 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.

[0072] When the adjusting shaft 312 rotates, it synchronously drives the coating rod 411, the cleaning rod 611 and the cleaning rod 711 to swing, so that the coating sponge 4121, the cleaning scraper groove 612 and the cleaning scraper groove 712 are all in contact with the inner wall of the pipe, and the ultrasonic probe 51 is close to the inner wall of the pipe. The cleaning scraper groove 612 cleans the inner wall of the pipe, the coating sponge 4121 applies coupling agent, the ultrasonic probe 51 performs ultrasonic flaw detection, and the cleaning scraper 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 pipeline flaw detection part.

[0073] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in 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); 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 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); An ultrasonic probe assembly (5), comprising an ultrasonic probe (51); in, 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). 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); 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; 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 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 the adjustment shaft (312); the adjustment shaft (312) is passed through the output shaft of the adjustment motor (311); 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); 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); The rod (3211) corresponds to the smear rod (411) one-to-one and is used to push the smear rod (411) so that the smear sponge (4121) abuts against the inner wall of the pipe. The second adjustment disk (322) is connected to at least one second push rod (3221). The second push rod (3221) corresponds to the cleaning rod (611) one-to-one and is used to push the cleaning rod (611) so that the cleaning scraping groove (612) abuts against the inner wall of the pipe. The third adjustment disk (323) is connected to at least one third push rod (3231). The third push rod (3231) corresponds to the cleaning rod (711) one-to-one and is used to push the cleaning rod (711) so that the cleaning scraping groove (712) abuts against the inner wall of the pipe.

Images