Pipeline defect stress composite detection device and detection control method thereof

Abstract

The invention relates to the technical field of pipeline stress detection, in particular to a pipeline defect stress composite detection device and a detection control method thereof.The pipeline defect stress composite detection device comprises two arc-shaped seats, one ends of the two arc-shaped seats are hinged to each other, and the other ends of the two arc-shaped seats are detachably connected through a buckle; the driving mechanism is mounted on the inner arc surface of the arc-shaped seat so as to drive the arc-shaped seat to move along the pipeline; the two cleaning brushes are respectively fixed on the side edges of one sides of the two arc-shaped seats, and the two cleaning brushes are combined to form a complete circular ring; the cleaning liquid circulating assembly is mounted on the outer arc surface of the arc-shaped seat; according to the device, through the arrangement of the cleaning liquid circulating assembly, the cleaning brush moves along with the arc-shaped base to clean the surface of the steel pipe, and after cleaning is completed, cleaning liquid sprayed on the surface of the steel pipe is recycled through the cleaning liquid circulating assembly, so that the cleaning liquid is recycled.

Description

Technical Field

[0001] The present invention relates to the field of pipeline stress detection, and in particular to a pipeline defect stress composite detection device and a detection control method thereof. Background Art

[0002] Pipeline defect stress composite detection refers to a detection method that comprehensively evaluates the structural defects and stress state of the pipeline at the same time. This method combines multiple detection technologies to fully understand the safety status of the pipeline, including but not limited to defects such as corrosion, cracks, deformation, dents, and stress distribution caused by factors such as internal pressure, external load, and temperature changes.

[0003] When using ultrasound to detect the stress of a pipeline, it is usually necessary to use a suitable coupling agent, such as water or oil-based gel, on the surface of the pipeline to ensure that the ultrasound is effectively transmitted to the inside of the material. When using a coupling agent on the pipeline surface, it is necessary to ensure that the detection surface is clean, flat and grease-free to reduce interference with pipeline detection. Therefore, the pipeline surface needs to be cleaned before detection. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a pipeline defect stress composite detection device and a detection control method thereof.

[0005] In a first aspect, the present invention provides a pipeline defect stress composite detection device, comprising two arc seats, one ends of the two arc seats are hinged to each other, and the other ends of the two arc seats are detachably connected by a buckle, and further comprising: A driving assembly is mounted on the inner arc surface of the arc seat to drive the arc seat to move along the pipeline; Two cleaning brushes are respectively fixed on one side of the two arc-shaped seats, and the two cleaning brushes are combined to form a complete ring; A cleaning liquid circulation assembly is mounted on the outer arc surface of the arc seat to drive the cleaning liquid to be recycled after cleaning through the cleaning brush; An ultrasonic detection component is installed on the other side of the arc seat to detect the pipeline after cleaning; The two arc seats are clamped on the outside of the steel pipe to be inspected, and then the ends of the two arc seats are positioned by the buckles between the other ends of the two arc seats, so that the two arc seats are sleeved on the surface of the steel pipe. After the arc seats are sleeved, the driving assembly on the inner arc surface of the arc seats supports the steel pipe, and the driving assembly supports the arc seats through rollers, and while supporting the arc seats, the driving rollers are rotated to drive the arc seats to move, so that the arc seats clean the surface of the pipe while moving and then apply the coupling agent; During the movement of the arc seat, the cleaning liquid circulation component delivers the cleaning liquid to the cleaning brush, so that after the cleaning liquid is delivered to the position of the cleaning brush, the cleaning brush moves with the arc seat to clean the surface of the steel pipe, and after the cleaning is completed, the cleaning liquid sprayed on the surface of the steel pipe is recovered by the cleaning liquid circulation component, so that the cleaning liquid is circulated and recycled; The ultrasonic detection component is used to apply coupling agent and perform ultrasonic detection on the surface of the steel pipe after cleaning, which is conducive to ultrasonic detection after the steel pipe surface is cleaned, and with the movement of the arc seat, the ultrasonic detection component can be driven to move synchronously, so that the ultrasonic detection component can perform ultrasonic detection on different positions of the steel pipe surface, which is conducive to improving the accuracy of stress detection of the steel pipe.

[0006] Preferably, the driving assembly comprises: A plurality of first relief grooves are divided into two symmetrically arranged groups, and are both arranged in a circular array on the inner arc surfaces of the two arc-shaped seats; A plurality of straight rods are arranged corresponding to the first give way grooves one by one, and are respectively slidably inserted into the corresponding first give way grooves, and universal wheels are fixed to the ends of all the straight rods, and the universal wheels are divided into two rows corresponding to the first give way grooves, and first springs are fixed between the universal wheels and the corresponding inner walls of the first give way grooves; A second clearance groove is formed on the inner wall of one of the arc-shaped seats; A bracket is slidably mounted inside the second make way groove, and a second spring is fixed between the bracket and the inner wall of the second make way groove; A driving wheel, rotatably mounted on the bracket; A motor is fixed on the side of the bracket, and the motor drives the driving wheel to rotate through an output shaft; The straight rod can limit the elastic moving track of the universal wheel. When the arc-shaped seat sleeve is arranged on the surface of the steel pipe, the universal wheel is attached to the surface of the steel pipe, and the surface of the steel pipe squeezes the universal wheel to retreat, so that the universal wheel pushes the first spring to compress, so that the universal wheel keeps extruding and contacting the outside of the steel pipe. The first clearance groove can provide clearance space for the retreat of the universal wheel, so that the arc-shaped seat is supported on the outside of the steel pipe through the universal wheel by the circumferential array arrangement of multiple universal wheels; The second clearance groove is used to provide clearance space for the driving wheel. When the driving wheel is squeezed on the surface of the steel pipe, the driving wheel is squeezed in the opposite direction by the steel pipe, thereby pushing the second spring to compress, so that the driving wheel squeezes the steel pipe under the action of the second spring. After the motor is started, the driving wheel is driven to rotate through the output shaft. After the driving wheel rotates, it rotates along the surface of the steel pipe due to the squeezing effect with the surface of the steel pipe, thereby driving the arc seat to move on the surface of the steel pipe. At the same time, the universal wheel supports the movement of the arc seat by rolling, thereby realizing the driving effect on the arc seat.

[0007] Preferably, it also includes: A plurality of pressure sensors are arranged corresponding to one group of the first clearance grooves, and the pressure sensors are fixed on the side wall of the universal wheel corresponding to the inside of the first clearance groove; A plurality of fourth springs, arranged one by one corresponding to the pressure sensors, and fixed between the corresponding pressure sensors and the side of the first clearance groove; A plurality of groups of scraping rods, two of the scraping rods form a group, the plurality of groups of scraping rods are arranged corresponding to a row of universal wheels close to the ultrasonic detection assembly, and the scraping rods in the same group are symmetrically fixed on both sides of the corresponding universal wheels; When the universal wheel is squeezed by the surface of the steel pipe and moves toward the inside of the first give way groove, the universal wheel drives the pressure sensor to move synchronously, so that the fourth spring is squeezed and compressed during the movement of the pressure sensor, and the compressed fourth spring generates an elastic force, thereby applying pressure to the pressure sensor through the elastic force of the fourth spring, so that the pressure sensor detects the applied pressure, and the pressure of different universal wheels is detected by different pressure sensors. When there is a protrusion on the surface of the steel pipe, the protrusion position pushes the universal wheel to move a greater distance toward the inside of the first give way groove, thereby pushing the fourth spring to compress more, thereby increasing the pressure on the pressure sensor, so that when there is a protrusion on the surface of the steel pipe, the pressure information value detected by the pressure sensor on the corresponding universal wheel changes, and vice versa, so as to identify the defective position on the surface of the steel pipe, which is beneficial to detect the defective position on the surface of the steel pipe during the process of moving the arc seat to clean the steel pipe, and the surface of the steel pipe is cleaned by a cleaning brush, which is beneficial to cleaning the protrusion at the stain position, thereby facilitating avoiding the interference of the protrusion at the stain position with the detection of the defective position on the surface of the steel pipe.

[0008] Preferably, the cleaning liquid circulation assembly comprises: Two cleaning liquid tanks, the two cleaning liquid tanks are respectively fixed on the outer arc surfaces of the two arc-shaped seats; Two filter exhaust assemblies, respectively installed inside the two cleaning liquid tanks, for filtering the recovery liquid entering the cleaning liquid tanks to separate impurities and exhaust the gas mixed in the recovered cleaning liquid; Two recovery grooves are respectively opened inside the two arc-shaped seats, and a plurality of second circular holes are opened in an array on the inner walls of the two recovery grooves, and the second circular holes communicate the recovery grooves with the inner arc surface of the arc-shaped seat; Two negative pressure pumps are respectively fixed on the side walls of the two cleaning liquid tanks, the output end of the negative pressure pump is connected to the filter exhaust assembly, and the input end of the negative pressure pump is connected to the recovery tank; The cleaning liquid is stored inside the cleaning liquid tank, and the cleaning liquid reaches the position of the cleaning brush through the filtering exhaust component, so that the cleaning liquid flows to the surface of the steel pipe through the cleaning brush, and the surface of the steel pipe is brushed by the cleaning brush. After the cleaning liquid flows to the surface of the steel pipe, as the arc seat moves, the cleaning liquid reaches the middle position of the arc seat, and under the negative pressure of the negative pressure pump, a strong negative pressure is generated inside the recovery tank, so that under the action of the negative pressure, the cleaning liquid on the surface of the steel pipe is absorbed through the second circular hole to reach the inside of the recovery tank, and then reaches the inside of the filtering exhaust component through the negative pressure pump. The filtering exhaust component processes the recovered cleaning liquid, so that the gas sucked in synchronously during the recovery process is discharged, and the cleaning liquid is filtered, so that impurities mixed in during the cleaning process of the steel pipe surface are filtered and recovered, and the filtered cleaning liquid re-enters the cleaning brush to clean the surface of the steel pipe, thereby avoiding the cleaning liquid adhering to the surface of the steel pipe and dripping during cleaning to interfere with the detection of the steel pipe.

[0009] Preferably, the filter exhaust assembly comprises: a partition fixed to the interior of the cleaning liquid tank, the partition dividing the interior of the cleaning liquid tank into a drainage chamber and an exhaust chamber, the drainage chamber having a plurality of first circular holes extending through the side of the drainage chamber toward the cleaning brush, the first circular holes connecting the cleaning brush and the drainage chamber; A screen is fixed inside the exhaust chamber, and the screen separates the exhaust chamber into an impurity chamber and a filter chamber; A one-way valve is fixed through the side of the partition, and the one-way valve connects the filter chamber and the drainage chamber in one direction; A solenoid valve is fixed through the side of the cleaning liquid tank, and the solenoid valve communicates the impurity chamber with the outside; Under the action of the negative pressure pump, the recovered cleaning liquid reaches the interior of the impurity chamber, and the cleaning liquid flows from the interior of the impurity chamber to the interior of the filter chamber, and passes through the screen during the flow process, so that the impurities in the cleaning liquid are filtered and separated and remain in the interior of the impurity chamber, while the cleaning liquid passes through the screen and enters the interior of the filter chamber. When the negative pressure pump transports the cleaning liquid to the interior of the impurity chamber, the solenoid valve is in a closed state. At this time, under the action of the negative pressure pump, the internal pressure of the impurity chamber continues to increase, so that under the action of the pressure, the cleaning liquid in the filter chamber continuously passes through the one-way valve into the interior of the drainage chamber, and then the cleaning liquid reaches the cleaning brush through the first circular hole in the drainage chamber for cleaning. When the amount of liquid in the filter chamber decreases, the solenoid valve is controlled to open, so that the gas entering the impurity chamber together with the cleaning liquid is discharged by the solenoid valve, thereby reducing the air pressure in the impurity chamber, thereby avoiding the continuous increase of the air pressure in the impurity chamber, resulting in the gas entering the drainage chamber through the one-way valve after the amount of liquid in the filter chamber is reduced, thereby causing the gas to enter the cleaning brush and affect the cleaning of the steel pipe surface.

[0010] Preferably, the ultrasonic detection component comprises: Two arc-shaped fixing plates are symmetrically fixed on the side edges of the arc-shaped seat, and sponge brushes are fixed on opposite sides of the two arc-shaped fixing plates; A plurality of ultrasonic detectors are fixed in a circular array on the sides of the two arc-shaped fixing plates; The arc-shaped fixing plate can be used to install the sponge brush and the ultrasonic detector. The sponge brush can apply coupling agent to the surface of the steel pipe. The coupling agent can be absorbed inside the sponge brush and can be replenished through an external coupling agent storage box. The coupling agent is applied to the surface of the steel pipe after cleaning. The ultrasonic detector can perform stress detection on the surface of the steel pipe. The ultrasonic detector can move with the arc-shaped seat, which is beneficial to detect different positions on the surface of the steel pipe, thereby helping to improve the accuracy of stress detection on the surface of the steel pipe.

[0011] Preferably, it also includes: A plurality of slide grooves are respectively provided on the sides of the two arc-shaped seats, and a third spring is fixed between the inner wall of the slide groove and the cleaning liquid tank; A push plate, fixed on the side of the cleaning liquid tank; An electric telescopic rod is fixed on the side of the arc-shaped seat, and the end of the electric telescopic rod pushes the push plate to move; After the electric telescopic rod is started, the telescopic rod can push the pushing plate to move, and the movement of the pushing plate drives the cleaning liquid tank to move, thereby driving the cleaning brush to move, so that the cleaning brush rotates around the surface of the steel pipe. At the same time, the movement of the cleaning liquid tank drives the compression of the third spring. After the telescopic rod of the electric telescopic rod is reset, the elastic force of the third spring pushes the cleaning liquid tank to reset, thereby driving the cleaning liquid tank and the cleaning brush to reciprocate on the surface of the steel pipe, which is beneficial to improve the cleaning effect on the surface of the steel pipe.

[0012] In a second aspect, a detection control method of a pipeline defect stress composite detection device is provided, wherein a controller is fixed on the side of the arc seat, and the control method comprises the following steps: The controller receives a plurality of pressure information detected and acquired by each of the pressure sensors; The controller compares each of the pressure information, and when detecting that the value of any of the pressure information is different from the values ​​of the other pressure information, the controller generates reciprocating drive control information, and the reciprocating drive information is used to control the drive component to start reciprocating drive; The controller sends the reciprocating drive control information to the drive component to control the drive component to start the reciprocating drive; Multiple pressure sensors detect the pressure of the pressure and send the detected pressure information to the controller. After receiving the pressure information, the controller compares the various pressure information. When detecting that any one of the pressure information is different from the other pressure information, the controller generates reciprocating drive control information and sends the reciprocating drive control information to the drive component to control the drive component to start driving the arc seat to move reciprocatingly, repeatedly detect the positions where the detected pressure information values ​​exist at different times, and stop the reciprocating drive after the reciprocating drive moves a specified number of times, and control the drive component to restore the original drive path, so as to drive the arc seat to continue to move to detect the surface of the steel pipe; On the one hand, the detected defective positions are repeatedly detected through reciprocating detection to improve the accuracy of stress detection on the steel pipe surface. On the other hand, the reciprocating movement of the arc seat drives the cleaning brush to repeatedly clean the detected defective positions, which is beneficial to avoid the situation where stains that are not completely cleaned in one cleaning interfere with the detection results, thereby helping to improve the accuracy of stress detection on the steel pipe surface.

[0013] Preferably, a liquid flow sensor is installed on the side wall of the screen, and further comprises: The controller receives liquid flow information generated by the liquid flow sensor when detecting liquid flow; The controller generates closing control information according to the liquid flow information, and the closing control information is used to control the closing of the solenoid valve; The controller sends the closing control information to the solenoid valve to control the solenoid valve to close; The liquid flow sensor detects the liquid at the screen position. After the cleaning liquid fills the interior of the filter chamber, the cleaning liquid overflows from the interior of the filter chamber to the screen position. After the liquid flow sensor detects the presence of liquid, it generates liquid flow information and sends the liquid flow information to the controller. After receiving the liquid flow information, the controller generates closing control information according to the liquid flow information and sends the closing control information to the solenoid valve to control the closing of the solenoid valve. After the solenoid valve is closed, as the negative pressure pump continuously transports the recovered cleaning liquid to the interior of the impurity chamber, the pressure inside the impurity chamber increases. The increased pressure exerts pressure on the filter chamber connected thereto, so that the filtered cleaning liquid in the filter chamber passes through the one-way valve under pressure to reach the interior of the liquid discharge chamber, thereby filtering the cleaning liquid. When the liquid flow sensor detects that there is no liquid flow at the screen position, liquid flow information is no longer generated. At this time, the solenoid valve resumes its open state, and the gas inside the impurity chamber is discharged from the solenoid valve to restore the pressure inside the impurity chamber.

[0014] Preferably, an air pressure sensor is installed inside the impurity chamber, and further comprises: The controller receives air pressure information P detected by the air pressure sensor; The controller compares the air pressure information with the standard air pressure P0 input by the controller and puts it into the judgment formula P>P0. When the judgment result is consistent, the controller generates opening control information according to the judgment result, and the opening control information is used to control the opening of the solenoid valve; The controller sends the opening control information to the solenoid valve to control the solenoid valve to open; The air pressure sensor can detect the air pressure inside the impurity chamber and send the detected air pressure information P to the controller. The staff can manually input the standard air pressure P0 through the controller and bring in the judgment formula P>P0. When the air pressure information P is greater than the standard air pressure P0, the air pressure inside the impurity chamber is too high. At this time, the controller generates an opening control information and sends the opening control information to the solenoid valve to control the opening of the solenoid valve, thereby avoiding the air pressure inside the impurity chamber being too high. Under the action of excessive air pressure, the pressure applied to the cleaning liquid increases, resulting in excessive discharge of the cleaning liquid to the cleaning brush.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention provides a cleaning liquid circulation component so that the cleaning brush moves with the arc seat to clean the surface of the steel pipe, and after cleaning, the cleaning liquid sprayed on the surface of the steel pipe is recovered by the cleaning liquid circulation component, so that the cleaning liquid is circulated and recycled. The ultrasonic detection component is used to apply a coupling agent and perform ultrasonic detection on the surface of the steel pipe after cleaning, which is conducive to ultrasonic detection after the steel pipe surface is cleaned, and with the movement of the arc seat, the ultrasonic detection component can be driven to move synchronously, so that the ultrasonic detection component can perform ultrasonic detection on different positions on the surface of the steel pipe, which is conducive to improving the accuracy of stress detection of the steel pipe.

[0016] 2. The present invention supports the arc seat by setting a driving component, and drives the arc seat to move by rotating the driving roller, so that the arc seat can clean the surface of the pipeline and apply the coupling agent while moving, thereby ensuring that the detection surface is clean, flat and grease-free, so as to reduce the interference of the ultrasonic detection component on the pipeline detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the method flow of the present invention.

[0018] Figure 2 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 3 It is a schematic diagram of the inner arc surface structure of the arc seat of the present invention.

[0020] Figure 4 The structure of the present invention after the overall section is schematically shown. Figure 1 .

[0021] Figure 5 For the present invention Figure 4 Schematic diagram of the enlarged structure at point A in the middle.

[0022] Figure 6 For the present invention Figure 4 Schematic diagram of the enlarged structure at point B in the middle.

[0023] Figure 7 The structure of the present invention after the overall section is schematically shown. Figure 2 .

[0024] Figure 8 For the present invention Figure 7 Schematic diagram of the enlarged structure at point C in the middle.

[0025] Fig. 9 It is a schematic structural diagram of the cleaning liquid tank after sectioning of the present invention.

[0026] In the figure: 1. arc seat; 2. first clearance groove; 3. universal wheel; 4. straight rod; 5. first spring; 6. second clearance groove; 7. bracket; 8. second spring; 9. motor; 10. driving wheel; 11. cleaning brush; 12. cleaning liquid tank; 1201. first circular hole; 13. partition; 14. screen; 15. one-way valve; 16. solenoid valve; 17. negative pressure pump; 18. third spring; 1801. slide groove; 19. recovery groove; 1901. second circular hole; 20. arc fixing plate; 21. sponge brush; 22. ultrasonic detector; 23. electric telescopic rod; 24. push plate; 25. scraper rod; 26. pressure sensor; 27. fourth spring. DETAILED DESCRIPTION

[0027] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0028] like Figures 2 to 9 The pipeline defect stress composite detection device shown includes two arc seats 1, one end of the two arc seats 1 is hinged to each other, and the other ends of the two arc seats 1 are detachably connected by buckles, and also includes: A driving assembly is installed on the inner arc surface of the arc seat 1 to drive the arc seat 1 to move along the pipeline; Two cleaning brushes 11 are respectively fixed on one side of the two arc-shaped seats 1, and the two cleaning brushes 11 are combined to form a complete ring; A cleaning liquid circulation assembly is installed on the outer arc surface of the arc seat 1 to drive the cleaning liquid to be recycled after cleaning through the cleaning brush 11; An ultrasonic detection component is installed on the other side of the arc seat 1 to detect the pipeline after cleaning; When using ultrasound to detect the stress of a pipeline, it is usually necessary to use a suitable coupling agent, such as water or oil-based gel, on the surface of the pipeline to ensure that the ultrasound is effectively transmitted to the inside of the material. When using a coupling agent on the pipeline surface, it is necessary to ensure that the detection surface is clean, flat and grease-free to reduce interference with pipeline detection. Therefore, the pipeline surface needs to be cleaned before detection; This embodiment of the present invention can solve the above problems. The specific implementation method is as follows: the two arc seats 1 are clamped on the outside of the steel pipe to be inspected, and then the ends of the two arc seats 1 are positioned by the buckles between the other ends of the two arc seats 1, so that the two arc seats 1 are sleeved on the surface of the steel pipe. After the arc seats 1 are sleeved, the driving assembly on the inner arc surface of the arc seat 1 supports the steel pipe. The driving assembly supports the arc seat 1 through rollers, and while supporting the arc seat 1, the arc seat 1 is driven to move by rotating the driving roller, so that the arc seat 1 cleans the surface of the pipe while moving and then applies the coupling agent; During the movement of the arc seat 1, the cleaning liquid circulation component delivers the cleaning liquid to the cleaning brush 11, so that after the cleaning liquid is delivered to the position of the cleaning brush 11, the cleaning brush 11 moves with the arc seat 1 to clean the surface of the steel pipe, and after the cleaning is completed, the cleaning liquid sprayed on the surface of the steel pipe is recovered by the cleaning liquid circulation component, so that the cleaning liquid is circulated and recycled; The ultrasonic detection component is used to apply coupling agent and perform ultrasonic detection on the surface of the steel pipe after cleaning, which is conducive to ultrasonic detection after the steel pipe surface is cleaned, and with the movement of the arc seat 1, the ultrasonic detection component can be driven to move synchronously, so that the ultrasonic detection component can perform ultrasonic detection on different positions of the steel pipe surface, which is conducive to improving the accuracy of stress detection of the steel pipe.

[0029] As an optional embodiment, the driving component includes: A plurality of first relief grooves 2 are divided into two symmetrically arranged groups, and are both formed into a circular array and are opened on the inner arc surfaces of the two arc-shaped seats 1; A plurality of straight rods 4 are arranged corresponding to the first clearance grooves 2 one by one, and are respectively slidably inserted into the corresponding first clearance grooves 2. Universal wheels 3 are fixed to the ends of all straight rods 4. The universal wheels 3 are divided into two rows corresponding to the first clearance grooves 2. First springs 5 ​​are fixed between the universal wheels 3 and the inner walls of the corresponding first clearance grooves 2. A second clearance groove 6 is formed on the inner wall of one of the arc-shaped seats 1; The bracket 7 is slidably mounted inside the second clearance groove 6, and a second spring 8 is fixed between the bracket 7 and the inner wall of the second clearance groove 6; A driving wheel 10 is rotatably mounted on the bracket 7; The motor 9 is fixed on the side of the bracket 7, and the motor 9 drives the driving wheel 10 to rotate through the output shaft; The straight rod 4 can limit the elastic moving track of the universal wheel 3. When the arc seat 1 is sleeved on the surface of the steel pipe, the universal wheel 3 fits on the surface of the steel pipe, and the surface of the steel pipe squeezes the universal wheel 3 to retreat, so that the universal wheel 3 pushes the first spring 5 to compress, so that the universal wheel 3 keeps extruding and contacting the outside of the steel pipe, and the first yielding groove 2 can provide yielding space for the retreat of the universal wheel 3, so that the arc seat 1 is supported on the outside of the steel pipe through the universal wheel 3 by the circumferential array arrangement of multiple universal wheels 3; The second clearance groove 6 is used to provide clearance space for the driving wheel 10. When the driving wheel 10 is squeezed on the surface of the steel pipe, the driving wheel 10 is squeezed in the reverse direction by the steel pipe, thereby pushing the second spring 8 to be compressed, so that the driving wheel 10 squeezes the steel pipe under the action of the second spring 8. After the motor 9 is started, the driving wheel 10 is driven to rotate through the output shaft. After the driving wheel 10 rotates, it rotates along the surface of the steel pipe due to the squeezing effect with the surface of the steel pipe, thereby driving the arc seat 1 to move on the surface of the steel pipe. At the same time, the universal wheel 3 supports the movement of the arc seat 1 by rolling, thereby realizing the driving effect on the arc seat 1.

[0030] As an optional embodiment, it also includes: A plurality of pressure sensors 26 are arranged corresponding to one group of the first clearance grooves 2, and the pressure sensors 26 are fixed on the side wall of the universal wheel 3 inside the corresponding first clearance groove 2; A plurality of fourth springs 27 are arranged one by one corresponding to the pressure sensors 26 and fixed between the corresponding pressure sensors 26 and the side of the first clearance groove 2; A plurality of groups of scraping rods 25, two scraping rods 25 form a group, and the plurality of groups of scraping rods 25 are arranged corresponding to a row of universal wheels 3 close to the ultrasonic detection assembly, and the scraping rods 25 of the same group are symmetrically fixed on both sides of the corresponding universal wheels 3; When the universal wheel 3 is squeezed by the surface of the steel pipe and moves toward the inside of the first clearance groove 2, the universal wheel 3 drives the pressure sensor 26 to move synchronously, so that the pressure sensor 26 squeezes the fourth spring 27 during the movement, and the compressed fourth spring 27 generates an elastic force, thereby applying pressure to the pressure sensor 26 through the elastic force of the fourth spring 27, so that the pressure sensor 26 detects the applied pressure, and different pressure sensors 26 detect the pressure of different universal wheels 3. When there is a bulge on the surface of the steel pipe, the bulge position pushes the universal wheel 3 to move a greater distance into the first clearance groove 2. The fourth spring 27 is separated from the steel pipe, thereby pushing the fourth spring 27 to be compressed more, thereby increasing the pressure on the pressure sensor 26, so that when there is a convex position on the steel pipe surface, the pressure information value detected by the pressure sensor 26 on the corresponding universal wheel 3 changes, and vice versa, thereby identifying the defective position on the steel pipe surface, which is beneficial to detecting the defective position on the steel pipe surface during the process of the arc seat 1 moving to clean the steel pipe, and cleaning the steel pipe surface with the cleaning brush 11, which is beneficial to cleaning the convexity at the stain position, thereby helping to avoid the interference of the convexity at the stain position on the detection of the defective position on the steel pipe surface.

[0031] As an optional embodiment, the cleaning liquid circulation component includes: Two cleaning liquid tanks 12, the two cleaning liquid tanks 12 are respectively fixed on the outer arc surfaces of the two arc-shaped seats 1; Two filter exhaust assemblies are respectively installed inside the two cleaning liquid tanks 12, and are used to filter the recovery liquid entering the cleaning liquid tank 12 to separate impurities and discharge the gas mixed in the recovered cleaning liquid; Two recovery grooves 19 are respectively opened inside the two arc-shaped seats 1. A plurality of second circular holes 1901 are opened in an array on the inner walls of the two recovery grooves 19. The second circular holes 1901 communicate with the recovery grooves 19 and the inner arc surface of the arc-shaped seat 1. Two negative pressure pumps 17 are respectively fixed on the side walls of the two cleaning liquid tanks 12, the output end of the negative pressure pump 17 is connected to the filter exhaust assembly, and the input end of the negative pressure pump 17 is connected to the recovery tank 19; The cleaning liquid is stored inside the cleaning liquid tank 12, and the cleaning liquid reaches the position of the cleaning brush 11 through the filtering exhaust component, so that the cleaning liquid flows to the surface of the steel pipe through the cleaning brush 11, and the surface of the steel pipe is brushed by the cleaning brush 11. After the cleaning liquid flows to the surface of the steel pipe, as the arc seat 1 moves, the cleaning liquid reaches the middle position of the arc seat 1, and under the negative pressure of the negative pressure pump 17, a strong negative pressure is generated inside the recovery tank 19, so that under the action of the negative pressure, the cleaning liquid on the surface of the steel pipe is absorbed through the second circular hole 1901 to reach the inside of the recovery tank 19, and then reaches the inside of the filtering exhaust component through the negative pressure pump 17. The filtering exhaust component processes the recovered cleaning liquid, so that the gas sucked in synchronously during the recovery process is discharged, and the cleaning liquid is filtered, so that the impurities mixed in during the cleaning process of the steel pipe surface are filtered and recovered, and the filtered cleaning liquid re-enters the cleaning brush 11 to clean the surface of the steel pipe, thereby avoiding the cleaning liquid from adhering to the surface of the steel pipe and dripping during cleaning to interfere with the detection of the steel pipe.

[0032] As an optional embodiment, the filter exhaust assembly includes: The partition 13 is fixed inside the cleaning liquid tank 12. The partition 13 divides the inside of the cleaning liquid tank 12 into a drainage chamber and an exhaust chamber. A plurality of first circular holes 1201 are formed through the side of the drainage chamber facing the cleaning brush 11. The first circular holes 1201 connect the cleaning brush 11 with the drainage chamber. The screen 14 is fixed inside the exhaust chamber, and the screen 14 separates the exhaust chamber into an impurity chamber and a filter chamber; The one-way valve 15 is fixed through the side of the partition 13, and the one-way valve 15 connects the filter chamber and the drainage chamber in one direction; The solenoid valve 16 is fixed through the side of the cleaning liquid tank 12, and the solenoid valve 16 connects the impurity chamber with the outside; Under the action of the negative pressure pump 17, the recovered cleaning liquid reaches the interior of the impurity chamber, and the cleaning liquid flows from the interior of the impurity chamber to the interior of the filter chamber. During the flow, the cleaning liquid passes through the screen 14, so that the impurities in the cleaning liquid are filtered and separated and remain in the interior of the impurity chamber, while the cleaning liquid passes through the screen 14 and enters the interior of the filter chamber. When the negative pressure pump 17 transports the cleaning liquid to the interior of the impurity chamber, the solenoid valve 16 is in a closed state. At this time, under the action of the negative pressure pump 17, the internal pressure of the impurity chamber is continuously increased, so that under the action of pressure, the cleaning liquid in the filter chamber continuously passes through the one-way valve 16. 15 enters the interior of the drainage chamber, and then the cleaning liquid reaches the cleaning brush 11 through the first circular hole 1201 inside the drainage chamber for cleaning. When the amount of liquid inside the filter chamber decreases, the solenoid valve 16 is controlled to open, so that the gas entering the impurity chamber together with the cleaning liquid is discharged by the solenoid valve 16, thereby reducing the air pressure inside the impurity chamber. This avoids the continuous increase in the air pressure inside the impurity chamber, resulting in the gas entering the drainage chamber through the one-way valve 15 after the liquid amount inside the filter chamber is reduced, thereby causing the gas to enter the cleaning brush 11 and affect the cleaning of the steel pipe surface.

[0033] As an optional embodiment, the ultrasonic detection component includes: Two arc-shaped fixing plates 20 are symmetrically fixed on the side of the arc-shaped seat 1, and sponge brushes 21 are fixed on the opposite sides of the two arc-shaped fixing plates 20; A plurality of ultrasonic detectors 22 are fixed in a circular array on the sides of the two arc-shaped fixing plates 20; The arc-shaped fixing plate 20 can be used to install the sponge brush 21 and the ultrasonic detector 22. The sponge brush 21 can apply coupling agent to the surface of the steel pipe. The coupling agent can be absorbed inside the sponge brush 21 and can be replenished through an external coupling agent storage box. The coupling agent is applied to the surface of the steel pipe after cleaning. The ultrasonic detector 22 can perform stress detection on the surface of the steel pipe. The ultrasonic detector 22 can move with the arc-shaped seat 1, which is beneficial to detect different positions on the surface of the steel pipe, thereby facilitating the improvement of the accuracy of stress detection on the surface of the steel pipe.

[0034] As an optional embodiment, it also includes: A plurality of slide grooves 1801 are respectively provided on the sides of the two arc-shaped seats 1, and a third spring 18 is fixed between the inner wall of the slide groove 1801 and the cleaning liquid tank 12; A push plate 24 is fixed to the side of the cleaning liquid tank 12; The electric telescopic rod 23 is fixed on the side of the arc-shaped seat 1, and the end of the electric telescopic rod 23 pushes the push plate 24 to move; After the electric telescopic rod 23 is started, it can push the pushing plate 24 to move through the telescopic rod. After the pushing plate 24 moves, it drives the cleaning liquid tank 12 to move, thereby driving the cleaning brush 11 to move, so that the cleaning brush 11 rotates around the surface of the steel pipe. At the same time, the movement of the cleaning liquid tank 12 drives the compression of the third spring 18. After the telescopic rod of the electric telescopic rod 23 is reset, the cleaning liquid tank 12 is pushed to reset under the action of the elastic force of the third spring 18, thereby driving the cleaning liquid tank 12 and the cleaning brush 11 to reciprocate on the surface of the steel pipe, which is beneficial to improve the cleaning effect on the surface of the steel pipe.

[0035] like Figure 1 A detection control method of a pipeline defect stress composite detection device is shown, a controller is fixed on the side of the arc seat 1, and the control method includes the following steps: The controller receives a plurality of pressure information detected and acquired by each pressure sensor 26; The controller compares each piece of pressure information, and when it is detected that the value of any one of the pressure information is different from the values ​​of the other pressure information, the controller generates reciprocating drive control information, and the reciprocating drive information is used to control the drive component to start the reciprocating drive; The controller sends the reciprocating drive control information to the drive component to control the drive component to start the reciprocating drive; A plurality of pressure sensors 26 detect the pressure of the pressure and send the detected pressure information to the controller. After receiving the pressure information, the controller compares the various pressure information. When any of the pressure information is detected to be different from the other pressure information, the controller generates reciprocating drive control information and sends the reciprocating drive control information to the drive component to control the drive component to start driving the arc seat 1 to move back and forth, repeatedly detect the positions where the detected pressure information values ​​exist in different positions, and stop the reciprocating drive after the reciprocating drive moves a specified number of times, and control the drive component to restore the original drive path, so as to drive the arc seat 1 to continue to move to detect the surface of the steel pipe; On the one hand, the accuracy of stress detection on the steel pipe surface is improved by repeatedly detecting the detected defective position through reciprocating detection. On the other hand, the reciprocating movement of the arc seat 1 drives the cleaning brush 11 to repeatedly clean the detected defective position, which is beneficial to avoid the situation where stains that are not completely cleaned in one cleaning interfere with the detection results, thereby improving the accuracy of stress detection on the steel pipe surface.

[0036] As an optional embodiment, a liquid flow sensor is installed on the side wall of the screen 14, and further includes: The controller receives the liquid flow information generated by the liquid flow sensor when the liquid flow is detected; The controller generates closing control information according to the liquid flow information, and the closing control information is used to control the closing of the solenoid valve 16; The controller sends the closing control information to the solenoid valve 16 to control the solenoid valve 16 to close; The liquid flow sensor detects the liquid at the position of the screen 14. After the cleaning liquid fills the interior of the filter chamber, the cleaning liquid overflows from the interior of the filter chamber to the position of the screen 14. After the liquid flow sensor detects the presence of liquid, it generates liquid flow information and sends the liquid flow information to the controller. After receiving the liquid flow information, the controller generates closing control information according to the liquid flow information and sends the closing control information to the solenoid valve 16 to control the closing of the solenoid valve 16. After the solenoid valve 16 is closed, as the negative pressure pump 17 continuously transports the recovered cleaning liquid to the interior of the impurity chamber, the pressure inside the impurity chamber increases. The increased pressure exerts pressure on the filter chamber connected thereto, so that the filtered cleaning liquid in the filter chamber passes through the one-way valve 15 under pressure to reach the interior of the drainage chamber, thereby filtering the cleaning liquid. When the liquid flow sensor detects that there is no liquid flow at the position of the screen 14, the liquid flow information is no longer generated. At this time, the solenoid valve 16 resumes the open state, and the gas inside the impurity chamber is discharged from the solenoid valve 16 to restore the pressure inside the impurity chamber.

[0037] As an optional embodiment, an air pressure sensor is installed inside the impurity chamber, and further includes: The controller receives air pressure information P detected by the air pressure sensor; The controller compares the air pressure information P with the standard air pressure P0 input by the controller and puts it into the judgment formula P>P0. When the judgment result is consistent, the controller generates the opening control information according to the judgment result. The opening control information is used to control the opening of the solenoid valve 16. The controller sends the opening control information to the solenoid valve 16 to control the solenoid valve 16 to open; The air pressure sensor can detect the air pressure inside the impurity chamber and send the detected air pressure information P to the controller. The staff can manually input the standard air pressure P0 through the controller and bring in the judgment formula P>P0. When the air pressure information P is greater than the standard air pressure P0, the air pressure inside the impurity chamber is too high. At this time, the controller generates an opening control information and sends the opening control information to the solenoid valve 16 to control the opening of the solenoid valve 16, thereby avoiding the air pressure inside the impurity chamber from being too high. Under the action of the excessively high air pressure, the pressure applied to the cleaning liquid increases, resulting in excessive discharge of the cleaning liquid to the cleaning brush 11.

[0038] The working principle of the present invention is as follows: the two arc seats 1 are clamped on the outside of the steel pipe to be inspected, and then the ends of the two arc seats 1 are positioned by the buckles between the other ends of the two arc seats 1, so that the two arc seats 1 are sleeved on the surface of the steel pipe. After the arc seats 1 are sleeved, the driving assembly on the inner arc surface of the arc seat 1 supports the steel pipe, and the driving assembly supports the arc seat 1 through the roller, and while supporting the arc seat 1, the arc seat 1 is driven to move by rotating the driving roller, so that the arc seat 1 cleans the surface of the pipe while moving and then applies the coupling agent; During the movement of the arc seat 1, the cleaning liquid circulation component delivers the cleaning liquid to the cleaning brush 11, so that after the cleaning liquid is delivered to the position of the cleaning brush 11, the cleaning brush 11 moves with the arc seat 1 to clean the surface of the steel pipe, and after the cleaning is completed, the cleaning liquid sprayed on the surface of the steel pipe is recovered by the cleaning liquid circulation component, so that the cleaning liquid is circulated and recycled; The ultrasonic detection component is used to apply coupling agent and perform ultrasonic detection on the surface of the steel pipe after cleaning, which is conducive to ultrasonic detection after the steel pipe surface is cleaned, and with the movement of the arc seat 1, the ultrasonic detection component can be driven to move synchronously, so that the ultrasonic detection component can perform ultrasonic detection on different positions of the steel pipe surface, which is conducive to improving the accuracy of stress detection of the steel pipe.

[0039] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention, and these changes and improvements fall within the scope of the present invention claimed.

Claims

1. A pipeline defect stress composite detection device, comprising two arc seats (1), one ends of the two arc seats (1) are hinged to each other, and the other ends of the two arc seats (1) are detachably connected by a buckle, characterized in that: Also includes: A driving assembly, mounted on the inner arc surface of the arc seat (1) to drive the arc seat (1) to move along the pipeline; Two cleaning brushes (11) are respectively fixed on one side of the two arc-shaped seats (1), and the two cleaning brushes (11) form a complete ring when combined; A cleaning liquid circulation component is mounted on the outer arc surface of the arc-shaped seat (1) to drive the cleaning liquid to be recycled after cleaning through the cleaning brush (11); An ultrasonic detection component is installed on the other side of the arc-shaped seat (1) to detect the pipeline after cleaning.

2. A pipeline defect stress composite detection device according to claim 1, characterized in that: The drive assembly comprises: A plurality of first clearance grooves (2), which are divided into two symmetrically arranged groups and are all arranged in a circular array on the inner arc surfaces of the two arc-shaped seats (1); A plurality of straight rods (4) are arranged one by one corresponding to the first clearance grooves (2) and are respectively slidably inserted into the corresponding first clearance grooves (2); universal wheels (3) are fixed to the ends of all the straight rods (4); the universal wheels (3) are divided into two rows corresponding to the first clearance grooves (2); and first springs (5) are fixed between the universal wheels (3) and the inner walls of the corresponding first clearance grooves (2); A second clearance groove (6) is formed on the inner wall of one of the arc-shaped seats (1); A bracket (7) is slidably mounted inside the second clearance groove (6), and a second spring (8) is fixed between the bracket (7) and the inner wall of the second clearance groove (6); A driving wheel (10) rotatably mounted on the bracket (7); The motor (9) is fixed on the side of the bracket (7), and the motor (9) drives the driving wheel (10) to rotate via an output shaft.

3. A pipeline defect stress composite detection device according to claim 2, characterized in that: Also includes: A plurality of pressure sensors (26) are arranged corresponding to one group of the first clearance grooves (2), and the pressure sensors (26) are fixed on the side wall of the universal wheel (3) corresponding to the inside of the first clearance groove (2); A plurality of fourth springs (27), arranged one-to-one corresponding to the pressure sensors (26), and fixed between the corresponding pressure sensors (26) and the side edge of the first clearance groove (2); A plurality of groups of scraping rods (25), two of the scraping rods (25) forming one group, the plurality of groups of scraping rods (25) being arranged corresponding to a row of the universal wheels (3) close to the ultrasonic detection assembly, and the scraping rods (25) in the same group being symmetrically fixed to two sides of the corresponding universal wheels (3).

4. A pipeline defect stress composite detection device according to claim 3, characterized in that: The cleaning liquid circulation component comprises: Two cleaning liquid tanks (12), the two cleaning liquid tanks (12) being respectively fixed on the outer arc surfaces of the two arc-shaped seats (1); Two filtering and exhausting components, respectively installed inside the two cleaning liquid tanks (12), for filtering the recovered liquid entering the cleaning liquid tank (12) to separate impurities and exhaust the gas mixed in the recovered cleaning liquid; Two recovery grooves (19) are respectively provided inside the two arc-shaped seats (1), and a plurality of second circular holes (1901) are provided in an array on the inner walls of the two recovery grooves (19), wherein the second circular holes (1901) are connected between the recovery grooves (19) and the inner arc surface of the arc-shaped seat (1); Two negative pressure pumps (17) are respectively fixed on the side walls of the two cleaning liquid tanks (12); the output end of the negative pressure pump (17) is connected to the filter exhaust assembly, and the input end of the negative pressure pump (17) is connected to the recovery tank (19).

5. A pipeline defect stress composite detection device according to claim 4, characterized in that: The filter exhaust assembly comprises: a partition (13) fixed to the interior of the cleaning liquid tank (12), the partition (13) dividing the interior of the cleaning liquid tank (12) into a drainage chamber and an exhaust chamber, a plurality of first circular holes (1201) penetrating through the side of the drainage chamber facing the cleaning brush (11), the first circular holes (1201) connecting the cleaning brush (11) and the drainage chamber; A screen (14) is fixed inside the exhaust chamber, the screen (14) dividing the exhaust chamber into an impurity chamber and a filter chamber; A one-way valve (15) is fixed through a side edge of the partition (13), wherein the one-way valve (15) connects the filter chamber and the drainage chamber in one direction; The solenoid valve (16) is fixed through the side of the cleaning liquid tank (12), and the solenoid valve (16) connects the impurity chamber with the outside.

6. A pipeline defect stress composite detection device according to claim 5, characterized in that: The ultrasonic detection assembly comprises: Two arc-shaped fixing plates (20) are symmetrically fixed on the side edges of the arc-shaped seat (1), and sponge brushes (21) are fixed on opposite sides of the two arc-shaped fixing plates (20); A plurality of ultrasonic detectors (22) are fixed in a circular array on the sides of the two arc-shaped fixing plates (20) that are combined.

7. A pipeline defect stress composite detection device according to claim 5, characterized in that: Also includes: A plurality of slide grooves (1801) are respectively provided on the sides of the two arc-shaped seats (1), and a third spring (18) is fixed between the inner wall of the slide groove (1801) and the cleaning liquid tank (12); A push plate (24) fixed to a side edge of the cleaning liquid tank (12); The electric telescopic rod (23) is fixed on the side of the arc-shaped seat (1), and the telescopic rod end of the electric telescopic rod (23) pushes the push plate (24) to move.

8. A detection control method for a pipeline defect stress composite detection device, applicable to a pipeline defect stress composite detection device as claimed in any one of claims 5 to 7, characterized in that: A controller is fixed on the side of the arc-shaped seat (1), and the control method comprises the following steps: The controller receives a plurality of pressure information detected and acquired by each of the pressure sensors (26); The controller compares each of the pressure information, and when detecting that the value of any of the pressure information is different from the values ​​of the other pressure information, the controller generates reciprocating drive control information, and the reciprocating drive information is used to control the drive component to start reciprocating drive; The controller sends the reciprocating drive control information to the drive component to control the drive component to start the reciprocating drive.

9. The detection control method of a pipeline defect stress composite detection device according to claim 8, characterized in that: A liquid flow sensor is installed on the side wall of the screen (14), and further comprises: The controller receives liquid flow information generated by the liquid flow sensor when detecting liquid flow; The controller generates closing control information according to the liquid flow information, wherein the closing control information is used to control the closing of the solenoid valve (16); The controller sends the closing control information to the solenoid valve (16) to control the solenoid valve (16) to close.

10. The detection control method of a pipeline defect stress composite detection device according to claim 8, characterized in that: The impurity chamber is provided with an air pressure sensor, and further comprises: The controller receives air pressure information P detected by the air pressure sensor; The controller compares the air pressure information with the standard air pressure P0 input by the controller and puts it into the judgment formula P>P0. When the judgment result is consistent, the controller generates opening control information according to the judgment result, and the opening control information is used to control the opening of the solenoid valve (16); The controller sends the opening control information to the solenoid valve (16) to control the solenoid valve (16) to open.

Images