CN118376692B - Automatic crack defect detection system - Google Patents
Automatic crack defect detection system Download PDFInfo
- Publication number
- CN118376692B CN118376692B CN202410831894.2A CN202410831894A CN118376692B CN 118376692 B CN118376692 B CN 118376692B CN 202410831894 A CN202410831894 A CN 202410831894A CN 118376692 B CN118376692 B CN 118376692B
- Authority
- CN
- China
- Prior art keywords
- pipe
- probe
- ultrasonic
- wave
- receiving
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 100
- 230000007547 defect Effects 0.000 title claims abstract description 45
- 239000000523 sample Substances 0.000 claims abstract description 154
- 238000007789 sealing Methods 0.000 claims description 53
- 238000000034 method Methods 0.000 claims description 13
- 230000002093 peripheral effect Effects 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 8
- 238000002592 echocardiography Methods 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 6
- 230000002159 abnormal effect Effects 0.000 description 4
- 238000007689 inspection Methods 0.000 description 3
- 239000007822 coupling agent Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000002604 ultrasonography Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009210 therapy by ultrasound Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/28—Details, e.g. general constructional or apparatus details providing acoustic coupling, e.g. water
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/023—Solids
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Acoustics & Sound (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The invention provides an automatic crack defect detection system, which relates to the technical field of crack detection and comprises a fixing device, a rotating device and an ultrasonic detection device; the fixing device is used for fixing the pipe; the rotating device is used for rotating the pipe around the axis of the pipe; the ultrasonic detection device is used for detecting whether cracks exist on the inner surface and the outer surface of the pipe; the ultrasonic detection device comprises an ultrasonic probe, a detection device moving unit and an ultrasonic processing unit; the ultrasonic probe comprises a transmitting probe, a first receiving probe, a second receiving probe and a probe rotating component; the first receiving probe is used for receiving a first echo of the detection wave; the first echo carries the outer surface information of the pipe; the second receiving probe is used for receiving a second echo generated simultaneously with the first echo; the second echo carries the inner surface information of the pipe; and the crack defects on the inner surface and the outer surface are detected simultaneously by ultrasonic waves, so that the detection efficiency is improved.
Description
Technical Field
The invention relates to the technical field of crack detection, in particular to an automatic crack defect detection system.
Background
The conventional pipe inspection generally uses an air tightness inspection method, but since the air tightness inspection method can only inspect whether a penetrating crack exists in the pipe, the pipe cannot be inspected for a non-penetrating crack. Since the crack defects of the pipe are usually present on the inner and outer surfaces of the pipe, although the conventional ultrasonic detection method can detect the crack defects, the ultrasonic detection is usually perpendicular to the outer surface of the pipe, only partial circumferential cracks can be detected, and the influence of defects such as bubbles and delamination in the pipe is large. In addition, the pipe is of an annular structure, so that the subsequent waveform processing operation is complex, and the efficiency is low.
In view of the above, the invention provides an automatic crack defect detection system, which can detect the crack defects on the inner surface and the outer surface of the pipe simultaneously by ultrasonic waves, thereby improving the detection efficiency.
Disclosure of Invention
The invention aims to provide an automatic crack defect detection system which comprises a fixing device, a rotating device and an ultrasonic detection device; the fixing device is used for fixing the pipe; the rotating device is used for rotating the pipe around the axis of the pipe; the ultrasonic detection device is used for detecting whether cracks exist on the inner surface and the outer surface of the pipe; the ultrasonic detection device comprises an ultrasonic probe, a detection device moving unit and an ultrasonic processing unit; the ultrasonic probe is used for transmitting detection waves to the pipe and receiving echoes; the ultrasonic probe comprises a transmitting probe, a first receiving probe, a second receiving probe and a probe rotating component; the transmitting probe is used for transmitting the detection wave to the pipe; the first receiving probe is used for receiving a first echo of the detection wave; the first echo carries the outer surface information of the pipe; the second receiving probe is used for receiving a second echo of the detection wave; the second echo carries the inner surface information of the pipe; the probe rotating component is used for rotating the transmitting probe, the first receiving probe and the second receiving probe respectively; the detection wave is incident into the pipe to obtain a refraction longitudinal wave and a refraction transverse wave at the same time, the first echo is the received refraction longitudinal wave, and the first receiving probe is used for receiving the refraction longitudinal wave; the second echo is the refraction transverse wave generated simultaneously with the refraction longitudinal wave, and the second receiving probe is used for receiving the refraction transverse wave; the refraction angle of the refracted longitudinal wave satisfies: ; the refraction angle of the refraction transverse wave satisfies: ; wherein R represents the outer diameter of the pipe and R represents the inner diameter of the pipe; d represents the depth of the preset shallowest crack defect; representing the error depth; Representing the refraction angle of the refracted longitudinal wave; Representing the angle of refraction of the refracted transverse wave; asin represents an arcsine function; the detection device moving unit is used for moving and/or rotating the ultrasonic probe along the axis of the pipe; and the ultrasonic processing unit is used for processing the detection wave and the echo wave to obtain the crack defect of the pipe.
Further, the ultrasonic detection device comprises a plurality of ultrasonic units, wherein the ultrasonic units are arranged along the axis of the pipe; the ultrasonic units comprise the transmitting probe, the first receiving probe and the second receiving probe; the transmitting probe of the first ultrasonic unit is aligned with the first receiving probe or the second receiving probe of the second ultrasonic unit along the axis of the pipe; the first ultrasonic unit and the second ultrasonic unit are adjacent; the first receiving probe or the second receiving probe of the second ultrasonic unit is also used for receiving a third echo of the detection wave transmitted by the transmitting probe of the first ultrasonic unit.
Further, the ultrasonic wave treatment unit comprises an outer surface crack treatment part, an inner surface crack treatment part and a circumferential crack treatment part; the outer surface crack processing component processes and analyzes the first echo to obtain an outer surface crack defect of the pipe; the inner surface crack treatment component carries out treatment analysis on the second echo to obtain an inner surface crack defect of the pipe; and the circumferential crack processing component processes and analyzes the third echo to obtain the circumferential crack defect of the pipe.
Further, the fixing device comprises a first pipe fixing unit and a second pipe fixing unit; the first pipe fixing unit comprises a first sealing part, a first sealing air bag and a fixing unit rotating part; the first pipe fixing unit is movably connected with the supporting wall through the fixing unit rotating part; the fixing unit rotating component drives the first pipe fixing unit to rotate and/or translate relative to the supporting wall; the first sealing component is used for sealing the port of the pipe, and a first rotating device is arranged on the inner circumferential surface of the first sealing component; the first sealing air bag is arranged on the inner peripheral surface of the first rotating device; when the pipe is not detected, the first sealing air bag is in a deflation state; when the pipe is detected, the first sealing air bag is in an inflated state; the second pipe fixing unit comprises a second sealing component and a second sealing air bag; the second pipe fixing unit is fixedly connected with the supporting wall; the second sealing component is used for sealing the other port of the pipe, and a second rotating device is arranged on the inner circumferential surface of the second sealing component; the second sealing air bag is arranged on the inner peripheral surface of the second rotating device; when the pipe is not detected, the second sealing air bag is in a deflation state; when the pipe is detected, the second sealing air bag is in an inflated state.
Further, the detection device moving unit comprises an axial sliding rail, a circumferential sliding rail and a circumferential sliding component; the axial sliding track is arranged in the supporting wall along the axial direction of the pipe; the circumferential sliding track is arranged in the supporting wall along an arc of the circumference of the pipe; the circumferential sliding component is matched with the circumferential sliding track, so that the arc where the ultrasonic probe is located slides along the circumferential sliding track.
Further, the probe rotating member includes a transmitting probe rotating member, a first receiving probe rotating member, and a second receiving probe rotating member; the transmitting probe rotating component is used for rotating the transmitting probe along the circumferential direction of the pipe by taking the transmitting end of the transmitting probe as a fixed point; the first receiving probe rotating component is used for rotating the first receiving probe along the circumferential direction of the pipe by taking the receiving end of the first receiving probe as a fixed point; the second receiving probe rotating component is used for rotating the second receiving probe along the circumferential direction of the pipe by taking the receiving end of the second receiving probe as a fixed point.
Further, a coupling agent is smeared between the ultrasonic probe and the pipe;
When the detection wave is a transverse wave, the couplant satisfies:
；
when the detection wave is a longitudinal wave, the couplant satisfies the following conditions:
；
Wherein, Representing the incident angle of the transverse wave detection wave; Representing an incident angle of the longitudinal wave detection wave; Representing the wave velocity of the transverse wave detection wave in the couplant; representing the wave velocity of the longitudinal wave detection wave in the couplant; Representing the wave velocity of the refracted longitudinal wave in the pipe; representing the wave velocity of the refracted transverse wave in the pipe.
Further, the probe moving unit rotates the rotation angle of the ultrasonic probeThe method comprises the following steps:
；
；
；
Wherein, Indicating the rotation angle of the ultrasonic probe; min (x) represents the minimum of the two values; Representing the detection angle of the outer surface; Representing the inner surface detection angle; acos denotes an inverse cosine function.
The technical scheme of the embodiment of the invention has at least the following advantages and beneficial effects:
according to the invention, the crack defects of the inner surface and the outer surface are detected simultaneously by ultrasonic waves, so that the detection efficiency is improved.
The detection device is semi-arc-shaped when the pipe is placed, so that the pipe is convenient to place, and the convenience of operation is improved.
Drawings
FIG. 1 is an exemplary block diagram of an automated crack defect detection system provided by the present invention;
FIG. 2 is an exemplary block diagram of an automated crack defect detection system provided by the present invention;
FIG. 3 is an exemplary block diagram of a fixture provided by the present invention;
FIG. 4 is an exemplary block diagram of an ultrasound unit provided by the present invention;
FIG. 5 is another exemplary block diagram of an ultrasound unit provided by the present invention;
FIG. 6 is an exemplary block diagram of an ultrasonic detection device provided by the present invention;
Icon: 1-fixing device, 2-rotating device, 3-ultrasonic detecting device, 4-pipe, 5-supporting wall, 11-first pipe fixing unit, 12-second pipe fixing unit, 111-first sealing member, 112-first sealing balloon, 113-fixing unit rotating member, 121-second sealing member, 122-second sealing balloon, 31-ultrasonic unit, 32-axial sliding rail, 312-circumferential sliding rail, 313-circumferential sliding member, 314-ultrasonic probe, 3141-transmitting probe, 3142-first receiving probe, 3143-second receiving probe, 41-pipe outer surface, 42-pipe inner surface.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
As shown in fig. 1, the automatic crack defect detection system provided by the invention comprises a fixing device 1, a rotating device 2 and an ultrasonic detection device 3. The fixing device 1 is used for fixing the pipe 4. The rotation device 2 is used to rotate the pipe 4 about its axis. The ultrasonic detection device 3 is used for detecting whether or not cracks exist on the inner and outer surfaces (the pipe outer surface 41 and the pipe inner surface 42) of the pipe 4.
As shown in fig. 2, the fixing device1 includes a first pipe fixing unit 11 and a second pipe fixing unit 12. As shown in fig. 3, the first pipe fixing unit 11 includes a first sealing member 111, a first sealing balloon 112, and a fixing unit rotating member 113; the first pipe fixing unit 11 is movably connected with the supporting wall 5 through a fixing unit rotating part 113; the fixing unit rotating member 113 rotates and/or translates the first tube fixing unit 11 with respect to the support wall 5. The first sealing member 111 seals a port of the pipe 4, and a first rotating device is provided on an inner peripheral surface of the first sealing member 111. The first sealing airbag 112 is provided on the inner peripheral surface of the first rotating means; when the tube 4 is not being inspected, the first sealing bladder 112 is in a deflated state; when the pipe 4 is inspected, the first sealing airbag 112 is in an inflated state. The second tube fixing unit 12 includes a second sealing member 121 and a second sealing bladder 122; the second pipe fixing unit 12 is fixedly connected with the supporting wall 5. The second sealing member 121 is used to seal the other port of the pipe 4, and a second rotating device is provided on the inner peripheral surface of the second sealing member 121. The second sealing bladder 122 is provided on the inner peripheral surface of the second rotating means; when the tube 4 is not being inspected, the second sealing bladder 122 is in a deflated state; when the pipe 4 is inspected, the second sealing bladder 122 is in an inflated state. When the pipe needs to be detected, the pipe to be detected can be firstly vertical, one end of the pipe 4 is embedded into a groove formed by the second sealing component 121 of the second pipe fixing unit 12, then the first pipe fixing unit 11 rotating to the state shown in fig. 3 is rotated anticlockwise by 90 degrees, and after the detection, the first pipe fixing unit 11 is moved towards the direction of the pipe until the other end of the pipe 4 is embedded into the groove formed by the first sealing component 111 of the first pipe fixing unit 11; finally, the balloon is inflated such that the axis of the tubing is perpendicular to the surface of the second tubing-securing unit 12. Through the supporting wall of half open state and the rotatable first tubular product fixed unit, need put into detecting system with tubular product from the highest position when can avoiding detecting tubular product, increased the convenience that tubular product detected.
The ultrasonic probe 3 includes an ultrasonic probe 314, a probe moving unit, and an ultrasonic processing unit. The ultrasonic probe 314 is used to transmit a detection wave to the pipe 4 and to receive an echo. The probe device moving unit is used for moving and/or rotating the ultrasonic probe along the axis of the pipe. The ultrasonic processing unit is used for processing the detection wave and the echo wave to obtain the crack defect of the pipe 4. Wherein the ultrasonic detection device 3 comprises a plurality of ultrasonic units 31, the ultrasonic units 31 being arranged along the axis of the pipe 4. The ultrasonic units 31 each include a transmitting probe 3141, a first receiving probe 3142, and a second receiving probe 3143. As shown in fig. 6, the transmitting probe of the first ultrasonic unit is aligned with the first receiving probe or the second receiving probe of the second ultrasonic unit along the axis of the pipe 4; the first ultrasonic unit and the second ultrasonic unit are adjacent. The first receiving probe or the second receiving probe of the second ultrasonic unit is also used for receiving a third echo of the detection wave transmitted by the transmitting probe of the first ultrasonic unit. By the adjacent arrangement of the transmitting probe and the receiving probe, whether circumferential cracks exist in the pipe section of the pipe between the adjacent ultrasonic units can be detected.
As shown in fig. 5, the ultrasonic probe 314 includes a transmitting probe 3141, a first receiving probe 3142, a second receiving probe 3143, and a probe rotating member. The transmitting probe 3141 is used to transmit a detection wave to the pipe 4. The first receiving probe 3142 is for receiving a first echo of the detection wave; the first echo carries the information of the outer surface of the pipe 4. The second receiving probe 3143 is for receiving a second echo of the detection wave; the second echo carries the information of the inner surface of the pipe 4. The probe rotating component is used for rotating the transmitting probe, the first receiving probe and the second receiving probe respectively. The defects of the inner wall and the outer wall of the pipe are detected through one-time emission, so that the detection speed is improved.
The first echo is a refracted longitudinal wave obtained by the incidence of the detection wave into the pipe 4, and the first receiving probe 3142 is used for receiving the longitudinal wave; the second echo is a refracted transverse wave generated by the detection wave while the detection wave is incident on the pipe 4 to generate a refracted longitudinal wave, and the second receiving probe 3143 is used for receiving the transverse wave. The inner wall and outer wall defects of the pipe are determined simultaneously by the refraction longitudinal wave and the refraction transverse wave generated by the same incident ultrasonic wave entering the pipe, so that interference caused by multi-ultrasonic wave incidence is avoided, and the subsequent processing flow is simplified.
The refraction angle of the refracted longitudinal wave satisfies:
；
the refraction angle of the refracted transverse wave satisfies:
；
Wherein, Representing the error depth; Representing the refraction angle of the refracted longitudinal wave; Representing the angle of refraction of the refracted transverse wave; r represents the outer diameter of the pipe and R represents the inner diameter of the pipe; d represents the depth of the preset shallowest crack defect. By adjusting the refraction angle, the internal and external crack defects of the pipe can be detected at the same time; asin represents the arcsine function.
A coupling agent is smeared between the ultrasonic probe 314 and the pipe 4;
when the detection wave is a transverse wave, the couplant satisfies the following conditions:
；
when the detection wave is a longitudinal wave, the couplant satisfies the following conditions:
；
Wherein, Representing the incident angle of the transverse wave detection wave; Representing an incident angle of the longitudinal wave detection wave; Representing the wave velocity of the transverse wave detection wave in the couplant; representing the wave velocity of the longitudinal wave detection wave in the couplant; Representing the wave velocity of the refracted longitudinal wave in the pipe; representing the wave velocity of the refracted transverse wave in the pipe.
Rotation angle of the probe 314 by the probe moving unitThe method comprises the following steps:
；
；
；
Wherein, Indicating the rotation angle of the ultrasonic probe; Representing the detection angle of the outer surface; min (x) represents the minimum of the two values; Indicating the inner surface detection angle. The defect of a certain arc length range on the inner surface and the outer surface of the pipe is detected through one-time emission, so that the detection speed can be further improved; acos denotes an inverse cosine function.
The probe rotating member includes a transmitting probe rotating member, a first receiving probe rotating member, and a second receiving probe rotating member. The transmitting probe rotating component is used for rotating the transmitting probe along the circumferential direction of the pipe 4 by taking the transmitting end of the transmitting probe as a fixed point. The first receiving probe rotating member is configured to rotate the first receiving probe in the circumferential direction of the pipe 4 with the receiving end of the first receiving probe as a fixed point. The second receiving probe rotating part is used for rotating the second receiving probe along the circumferential direction of the pipe 4 by taking the receiving end of the second receiving probe as a fixed point.
As shown in fig. 1 and 4, the probe device moving unit includes an axial slide rail 32, a circumferential slide rail 312, and a circumferential slide member 313. An axial sliding rail 32 is provided in the support wall 5 in the direction of the axis of the tube 4. The circumferential sliding rail 312 is provided in the support wall 5 along an arc of the circumference of the pipe 4. The circumferential sliding member 313 is engaged with the circumferential sliding rail 312 such that the circular arc where the ultrasonic probe is located slides along the circumferential sliding rail 312. When no detection is performed, the ultrasonic unit 31 may slide to the support wall 5 side along the circumferential slide rail 312; when the pipe is to be detected, the ultrasonic unit 31 in an undetected state can play a certain limiting role on the pipe by embedding the pipe into the supporting wall 5, so that the situation that the end face of the pipe, which is close to one end of the first pipe fixing unit 11, cannot be embedded into a groove formed by the first sealing component 111 due to overlarge error is avoided; after the pipe is fixed, the ultrasonic unit 31 is slid along the circumferential sliding rail 312 to the state shown in fig. 5; after the ultrasonic unit is fixed, the ultrasonic probe is ejected so that the end face of the ultrasonic probe is in contact with the outer surface 41 of the pipe; adjusting the ultrasonic probe to a detection position; and finally extruding the couplant to the end face through an ultrasonic probe, and starting detection.
The ultrasonic treatment unit includes an outer surface crack treatment member, an inner surface crack treatment member, and a circumferential crack treatment member. And the outer surface crack processing component processes and analyzes the first echo to obtain the outer surface crack defect of the pipe. And the inner surface crack treatment component processes and analyzes the second echo to obtain the inner surface crack defect of the pipe. And the circumferential crack processing component processes and analyzes the third echo to obtain the circumferential crack defect of the pipe.
The outer surface crack processing component processes and analyzes the first echo to obtain an outer surface crack defect of the pipe, and the processing component comprises: acquiring a plurality of first echoes acquired by a plurality of ultrasonic units at a plurality of positions; clustering the first echoes to obtain a normal echo group and an abnormal echo group; extracting a plurality of echo characteristics of the normal echo group about cracks; the echo characteristics include at least echo time and echo amplitude; and analyzing and processing the abnormal echo group based on the echo characteristics to obtain the outer surface crack defect.
The second echo is processed and analyzed by the inner surface crack processing component to obtain the inner surface crack defect of the pipe, and the processing component comprises the following steps: acquiring a plurality of second echoes acquired at a plurality of positions by a plurality of ultrasonic units; clustering the plurality of second echoes to obtain a normal echo group and an abnormal echo group; extracting a plurality of echo characteristics of the normal echo group about cracks; the echo characteristics include at least echo time and echo amplitude; and analyzing and processing the abnormal echo group based on the echo characteristics to obtain the inner surface crack defect.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The automatic crack defect detection system is characterized by comprising a fixing device, a rotating device and an ultrasonic detection device;
the fixing device is used for fixing the pipe;
the rotating device is used for rotating the pipe around the axis of the pipe;
The ultrasonic detection device is used for detecting whether cracks exist on the inner surface and the outer surface of the pipe; the ultrasonic detection device comprises an ultrasonic probe, a detection device moving unit and an ultrasonic processing unit;
the ultrasonic probe is used for transmitting detection waves to the pipe and receiving echoes; the ultrasonic probe comprises a transmitting probe, a first receiving probe, a second receiving probe and a probe rotating component;
The transmitting probe is used for transmitting the detection wave to the pipe; the first receiving probe is used for receiving a first echo of the detection wave; the first echo carries the outer surface information of the pipe; the second receiving probe is used for receiving a second echo of the detection wave; the second echo carries the inner surface information of the pipe; the probe rotating component is used for rotating the transmitting probe, the first receiving probe and the second receiving probe respectively; the probe rotating component comprises a transmitting probe rotating component, a first receiving probe rotating component and a second receiving probe rotating component; the transmitting probe rotating component is used for rotating the transmitting probe along the circumferential direction of the pipe by taking the transmitting end of the transmitting probe as a fixed point; the first receiving probe rotating component is used for rotating the first receiving probe along the circumferential direction of the pipe by taking the receiving end of the first receiving probe as a fixed point; the second receiving probe rotating component is used for rotating the second receiving probe along the circumferential direction of the pipe by taking the receiving end of the second receiving probe as a fixed point; the detection wave is incident into the pipe to obtain a refraction longitudinal wave and a refraction transverse wave at the same time, the first echo is the received refraction longitudinal wave, and the first receiving probe is used for receiving the refraction longitudinal wave; the second echo is the refraction transverse wave generated simultaneously with the refraction longitudinal wave, and the second receiving probe is used for receiving the refraction transverse wave; the refraction angle of the refracted longitudinal wave satisfies:
；
The refraction angle of the refraction transverse wave satisfies:
; wherein R represents the outer diameter of the pipe and R represents the inner diameter of the pipe; d represents the depth of the preset shallowest crack defect; representing the error depth; Representing the refraction angle of the refracted longitudinal wave; Representing the angle of refraction of the refracted transverse wave; asin represents an arcsine function;
the detection device moving unit is used for moving and/or rotating the ultrasonic probe along the axis of the pipe;
and the ultrasonic processing unit is used for processing the detection wave and the echo wave to obtain the crack defect of the pipe.
2. The automated crack defect detection system of claim 1, wherein the ultrasonic detection device comprises a plurality of ultrasonic units disposed along an axis of the pipe;
the ultrasonic units comprise the transmitting probe, the first receiving probe and the second receiving probe;
The transmitting probe of the first ultrasonic unit is aligned with the first receiving probe or the second receiving probe of the second ultrasonic unit along the axis of the pipe; the first ultrasonic unit and the second ultrasonic unit are adjacent;
The first receiving probe or the second receiving probe of the second ultrasonic unit is also used for receiving a third echo of the detection wave transmitted by the transmitting probe of the first ultrasonic unit.
3. The automated crack defect detection system of claim 2, wherein the ultrasonic processing unit comprises an outer surface crack processing component, an inner surface crack processing component, and a circumferential crack processing component;
The outer surface crack processing component processes and analyzes the first echo to obtain an outer surface crack defect of the pipe;
the inner surface crack treatment component carries out treatment analysis on the second echo to obtain an inner surface crack defect of the pipe;
and the circumferential crack processing component processes and analyzes the third echo to obtain the circumferential crack defect of the pipe.
4. The automated crack defect detection system of claim 1, wherein the fixture comprises a first pipe fixing unit and a second pipe fixing unit;
The first pipe fixing unit comprises a first sealing part, a first sealing air bag and a fixing unit rotating part; the first pipe fixing unit is movably connected with the supporting wall through the fixing unit rotating part; the fixing unit rotating component drives the first pipe fixing unit to rotate and/or translate relative to the supporting wall;
The first sealing component is used for sealing the port of the pipe, and a first rotating device is arranged on the inner circumferential surface of the first sealing component;
The first sealing air bag is arranged on the inner peripheral surface of the first rotating device; when the pipe is not detected, the first sealing air bag is in a deflation state; when the pipe is detected, the first sealing air bag is in an inflated state;
The second pipe fixing unit comprises a second sealing component and a second sealing air bag; the second pipe fixing unit is fixedly connected with the supporting wall;
The second sealing component is used for sealing the other port of the pipe, and a second rotating device is arranged on the inner circumferential surface of the second sealing component;
The second sealing air bag is arranged on the inner peripheral surface of the second rotating device; when the pipe is not detected, the second sealing air bag is in a deflation state; when the pipe is detected, the second sealing air bag is in an inflated state.
5. The automatic crack defect detection system according to claim 1, wherein the detection device moving unit includes an axial sliding rail, a circumferential sliding rail, and a circumferential sliding member;
the axial sliding track is arranged in the supporting wall along the axial direction of the pipe;
the circumferential sliding track is arranged in the supporting wall along an arc of the circumference of the pipe;
the circumferential sliding component is matched with the circumferential sliding track, so that the arc where the ultrasonic probe is located slides along the circumferential sliding track.
6. The automatic crack defect detection system according to claim 1, wherein a couplant is smeared between the ultrasonic probe and the pipe;
When the detection wave is a transverse wave, the couplant satisfies:
；
when the detection wave is a longitudinal wave, the couplant satisfies the following conditions:
；
Wherein, Representing the incident angle of the transverse wave detection wave; Representing an incident angle of the longitudinal wave detection wave; Representing the wave velocity of the transverse wave detection wave in the couplant; representing the wave velocity of the longitudinal wave detection wave in the couplant; Representing the wave velocity of the refracted longitudinal wave in the pipe; representing the wave velocity of the refracted transverse wave in the pipe.
7. The automatic crack defect detection system according to claim 1, wherein the probe moving unit rotates the rotation angle of the ultrasonic probeThe method comprises the following steps:
；
；
；
Wherein, Indicating the rotation angle of the ultrasonic probe; min (x) represents the minimum of the two values; Representing the detection angle of the outer surface; Representing the inner surface detection angle; acos denotes an inverse cosine function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410831894.2A CN118376692B (en) | 2024-06-26 | 2024-06-26 | Automatic crack defect detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410831894.2A CN118376692B (en) | 2024-06-26 | 2024-06-26 | Automatic crack defect detection system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN118376692A CN118376692A (en) | 2024-07-23 |
| CN118376692B true CN118376692B (en) | 2024-08-20 |
Family
ID=91906080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410831894.2A Active CN118376692B (en) | 2024-06-26 | 2024-06-26 | Automatic crack defect detection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118376692B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206557164U (en) * | 2017-03-03 | 2017-10-13 | 湖南五凌电力科技有限公司 | A kind of weld joint ultrasonic detects transducer |
| CN117169328A (en) * | 2022-05-27 | 2023-12-05 | 北京华航无线电测量研究所 | Ultrasonic external detection device for underwater steel pipe with cladding layer |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19943215C2 (en) * | 1999-09-09 | 2001-07-19 | Siemens Ag | Method and device for detecting a fault using ultrasound |
| JP4415313B2 (en) * | 2004-10-08 | 2010-02-17 | 住友金属工業株式会社 | Ultrasonic probe, ultrasonic flaw detection method and ultrasonic flaw detection apparatus |
| US7757559B2 (en) * | 2007-05-25 | 2010-07-20 | Magnetic Analysis Corporation | Oblique flaw detection using ultrasonic transducers |
| JP6953953B2 (en) * | 2017-09-26 | 2021-10-27 | 日本製鉄株式会社 | A method for evaluating the soundness of oblique ultrasonic flaw detection, and a method for oblique ultrasonic flaw detection using this method. |
| CN108802202A (en) * | 2018-05-29 | 2018-11-13 | 共享铸钢有限公司 | A kind of ultrasonic wave tandem probe apparatus and method |
-
2024
- 2024-06-26 CN CN202410831894.2A patent/CN118376692B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206557164U (en) * | 2017-03-03 | 2017-10-13 | 湖南五凌电力科技有限公司 | A kind of weld joint ultrasonic detects transducer |
| CN117169328A (en) * | 2022-05-27 | 2023-12-05 | 北京华航无线电测量研究所 | Ultrasonic external detection device for underwater steel pipe with cladding layer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN118376692A (en) | 2024-07-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2952152C (en) | Ultrasonic inspection probe carrier system for performing nondestructive testing | |
| US7874212B2 (en) | Ultrasonic probe, ultrasonic flaw detection method, and ultrasonic flaw detection apparatus | |
| KR100943219B1 (en) | Inspecting Scanner Using Ultrasonic Wave | |
| US8301401B2 (en) | Low profile encircling ultrasonic probe for the inspection of in-situ piping in immersion mode | |
| US9575034B2 (en) | Method and system for immersion ultrasound inspection including within downwardly opening cavities | |
| US20040020298A1 (en) | Apparatus for end-to-end ultrasonic inspection of tubular goods and system and method incorporating same | |
| US4285242A (en) | Pipe inspection apparatus | |
| CN102486470A (en) | Nondestructive inspection ultrasonic probe universal joint pallet | |
| CN118376692B (en) | Automatic crack defect detection system | |
| CN104749245B (en) | Water-immersion ultrasonic detection method for small-pipe-diameter and large-wall-thickness pipeline equipment | |
| CN111545983A (en) | Automatic labeling mechanism for straight weld joint of short pipe of stainless steel welded pipe | |
| CN101886542A (en) | Oil string thread and sealing face damage acoustic detection method and detection device | |
| EP3320334B1 (en) | Method and system for inspecting a rail wheel with phased array probes | |
| JP2006106011A (en) | Method and device for inspecting honeycomb structure | |
| CN204115684U (en) | A kind of elbow residual wall thickness pick-up unit | |
| US11162919B2 (en) | Ultrasonic based internal inspection of tubes | |
| KR101787904B1 (en) | Wedge for detecting using ultrasonic and apparatus for detecting using ultrasonic including the wedge | |
| CN112881511A (en) | Method for identifying and detecting pipeline girth weld | |
| WO1992021965A1 (en) | A method and an apparatus for the dectection of corrosion in pipes | |
| JP6274957B2 (en) | Coupling monitoring method of oblique angle ultrasonic probe | |
| GB2280507A (en) | SCAN - Method and apparatus for ultrasonic testing of tubular products. | |
| CN203414065U (en) | Probe seat apparatus used for measuring thickness of steel tube and applied in ultrasonic-wave rotated diagnostic machine | |
| CN201754153U (en) | Automatic flaw detection device | |
| KR101615628B1 (en) | Ultrasonic testing device about flaw of subject | |
| CN110196285A (en) | A kind of large ring multi-panel array ultrasonic automatic detection device and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |