CN118243788A - Phased array ultrasonic detection method and detection device for in-pipe detection - Google Patents
Phased array ultrasonic detection method and detection device for in-pipe detection Download PDFInfo
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- G—PHYSICS
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- 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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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- G01N29/26—Arrangements for orientation or scanning by relative movement of the head and the sensor
- G01N29/265—Arrangements for orientation or scanning by relative movement of the head and the sensor by moving the sensor relative to a stationary material
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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Abstract
The invention discloses a phased array ultrasonic detection method and a phased array ultrasonic detection device for in-pipe detection, and relates to the technical field of phased array ultrasonic detection. When the pipeline is detected, the matched positioning structure is firstly installed, so that the feedback of the pipeline information is ensured. The cooperating positioning structure is mounted externally of the conduit and aligned with the conduit port location to define a displacement position of the scanning structure while the scanning structure information is transmitted. During detection, the cover outer frame and the limit inner frame are continuously covered outside the pipeline. The displacement wheel is arranged in the assembly protective cover and used for adjusting the contact between the scanning structure and the outer wall of the pipeline. Once contacted, the displacement wheel moves the scanning structure as a whole towards the pipeline until reaching the position to be detected. Then, the drive gear drives the drive adjusting rack to move towards the pipeline, so that the contact detection end is guaranteed to be attached to the pipeline, and the pipeline is scanned through the scanning piece.
Description
Technical Field
The invention relates to the technical field of phased array ultrasonic detection, in particular to a phased array ultrasonic detection method and device for in-pipe detection.
Background
Phased array ultrasonic inspection is an advanced non-destructive inspection technique that utilizes the characteristics of ultrasonic waves propagating inside an object under inspection to inspect the internal structure, defects, and properties of the material. The main principle is that a two-dimensional array formed by a group of transmitting and receiving elements is used for simultaneously transmitting and receiving a plurality of ultrasonic beams, so that detection of all directions in a detected object is realized.
Although phased array ultrasound technology has the ability to detect in all directions, its application in confined spaces such as pipes may be limited. Due to the volume and shape of the device, the device may not be fully adapted to some complex pipeline structures, so that effective detection of partial areas is not performed, and in complex environments such as pipelines, ultrasonic signals may be interfered and attenuated by environmental factors, thereby affecting the accuracy and reliability of detection. For example, tortuosity, weld joints, dirt, etc. within the pipe may cause signal attenuation or reflection, making the detection of the partial area less accurate.
Disclosure of Invention
The invention aims to provide a phased array ultrasonic detection method and a phased array ultrasonic detection device for in-pipe detection, which realize automatic pipeline scanning action compared with manual operation or a traditional positioning mode, and provide a more stable and accurate positioning function by matching with a positioning structure, so that the detection accuracy and reliability are improved.
In order to achieve the above purpose, the present invention provides the following technical solutions:
in a first aspect, a phased array ultrasonic detection method for in-pipe detection is provided, including:
a group of ultrasonic sensors are arranged outside the pipeline, the sensors form a phased array, and the sensors can be fixed on the pipeline wall or moved by a robot and other devices.
Selecting proper frequency and beam angle, transmitting ultrasonic waves simultaneously by a plurality of sensors in the phased array, and enabling the ultrasonic waves to penetrate through the wall of the pipeline and enter the interior of the pipeline;
the sensors receive ultrasonic reflection signals in the pipeline, and as the sensors are arranged in an array form, the time and the amplitude of the signals received by each sensor can be accurately recorded;
processing the received signal, including time domain and frequency domain analysis, to determine if defects, corrosion, cracks exist inside the pipeline, involving signal filtering, gain control, phase adjustment;
Reconstructing an image of the interior of the pipeline by using the received signal data through an imaging algorithm, and displaying the structure and defect positions of the interior of the pipeline;
the reconstructed image is analyzed to determine the type, location and severity of the problem within the pipeline, which facilitates evaluation of the safety and reliability of the pipeline, in conjunction with subsequent maintenance and repair operations.
Preferably, when the sensors are arranged, determining the area to be detected in the pipeline, and selecting a proper number and arrangement mode of the sensors according to the diameter and the geometric shape of the pipeline; the sensors are arranged in a linear, two-dimensional or three-dimensional manner to cover the entire pipe cross section or a specific area; determining the appropriate ultrasonic frequency and amplitude, and the angle and direction of emission; each sensor in the phased array is controlled to emit ultrasonic waves simultaneously or sequentially, ensuring that the signal covers the entire detection area.
Preferably, the sensors receive ultrasonic signals reflected by the inside of the pipeline and record the time and amplitude of the signals received by each sensor; signal acquisition may involve multiple scans or transmission and reception at different angles to obtain comprehensive data.
Preferably, the received signal is preprocessed, including signal amplification, filtering, delay correction, and the like; phase control and dynamic focus control are performed to enhance signal quality and resolution.
Preferably, the received signal data are converted into images of the interior of the pipeline by using an imaging algorithm, and a two-dimensional imaging technology, a B-type ultrasonic imaging technology or a three-dimensional imaging technology is adopted; analyzing the imaging result to identify the defects, corrosion and cracks in the pipeline; and quantitatively analyzing the detected problems, evaluating the size, shape, position and severity of the problems, and making a maintenance and repair scheme according to the analysis result to ensure the safe operation of the pipeline.
In a second aspect, a phased array ultrasonic testing device for in-pipe testing is provided, comprising: the detection structure that outer frame, spacing inner frame and regulation scanning structure are established to the cover is established outer frame by the cover that a plurality of combination outer frame was constituteed, by a plurality of spacing inner frame that the combination inner frame was constituteed is located cover establish the inner frame with spacing inner frame inboard, be provided with a plurality of regulation scanning structure, with the cooperation location structure of detection structure cooperation guarantee detection performance.
Preferably, the cover outer frame includes: the inside fretwork forms the rectangle vestibule, provides the combination outer frame of subassembly installation region, is located the combination outer frame is inboard, with the cooperation mounting bracket that the combination outer frame spiro union is fixed, is located the cooperation mounting bracket outside, with adjacent the drive shaft bearing frame that the combination outside links up is located the cooperation mounting bracket is inboard, by the drive gear of drive force is provided to the drive bearing frame.
Preferably, the limiting inner frame comprises: the inner hollow forms a rectangular hole cavity, provides a combined inner frame of the assembly installation area, is positioned at the inner side of the combined inner frame, and is matched with the inner clamping frame on the same vertical line with the displacement of the matched installation frame, and is used for connecting the combined inner frame and the positioning locking piece of the matched inner clamping frame.
Preferably, the adjusting scanning structure includes: the device comprises a driving gear, a driving adjusting rack which is meshed with the driving gear and is driven by the driving gear to perform position adjustment, a contact detection end which is positioned at one end of the driving adjusting rack close to the detection direction and is contacted with a pipeline to be detected, and an assembly protection cover which is positioned at one end of the contact detection end far away from the driving adjusting rack and is internally provided with a driving wheel, and a scanning piece which is in threaded connection with the contact detection end and is used for performing pipeline scanning action.
Preferably, the mating positioning structure includes: two are a set of, cover locate the outside spacing semicircle frame of waiting to detect the pipeline, are located spacing semicircle frame outside, with spacing semicircle frame welded cooperation fixed sleeve is used for connecting two spacing semicircle frame, ensure its linking performance's locating bolt is located spacing semicircle frame inboard is used for carrying out signal transmission location's signal receiving transmission module.
Compared with the prior art, the invention has the beneficial effects that:
1. Accurate positioning and control: through the use of cooperation location structure and cover interior frame, spacing interior frame, can more accurate location and control scanning structure's position to ensure pipeline detection's accuracy and reliability.
2. Full scan: through adjusting a plurality of annular regulation scanning structures that set up, can realize the comprehensive scanning to the pipeline, ensure information acquisition's comprehensiveness and integrality.
3. Stability and reliability: the system design considers stability and reliability, uses components such as a displacement wheel and a driving gear to ensure stable contact between the scanning structure and the pipeline, and cooperates with the positioning structure for information feedback and transmission, so that the scanning piece (ultrasonic scanning equipment) can better stably transmit the acquired information.
4. Convenience of operation: the operation flow is clear, the structural design is reasonable, the operation of the system is more convenient and efficient, and the complexity of manual operation and possible misoperation are reduced.
5. Applicability: the system is applicable to various pipeline detection scenes, can meet the requirements of different pipeline sizes and shapes, and has certain universality and flexibility.
Drawings
Fig. 1 is an overall front view of a scanning structure of the present invention.
Fig. 2 is a schematic structural diagram of an adjustable scanning structure according to the present invention.
Fig. 3 is a schematic structural view of the matching positioning structure of the present invention.
Fig. 4 is a perspective view of the present invention mated with a positioning structure.
In the figure: the outer frame 1, the limiting inner frame 2, the adjusting scanning structure 3, the matched positioning structure 4, the combined outer frame 11, the matched mounting frame 12, the driving shaft bearing frame 13, the driving gear 14, the combined inner frame 21, the positioning locking piece 22, the matched inner clamping frame 23, the driving adjusting rack 31, the contact detection end 32, the assembly protection cover 33, the scanning piece 34, the limiting semicircular frame 41, the matched fixing sleeve 42, the positioning bolt 43 and the signal receiving and transmitting module 44 are covered.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the invention may be practiced without one or more of these details. In other instances, well-known features have not been described in detail in order to avoid obscuring the invention.
Applicant believes that, despite the ability of phased array ultrasound technology to detect in all directions, application in confined spaces such as pipes may be limited. Due to the volume and shape of the device, the device may not be fully adapted to some complex pipeline structures, so that effective detection of partial areas is not performed, and in complex environments such as pipelines, ultrasonic signals may be interfered and attenuated by environmental factors, thereby affecting the accuracy and reliability of detection. For example, tortuosity, weld joints, dirt, etc. within the pipe may cause signal attenuation or reflection, making the detection of the partial area less accurate.
Therefore, the applicant has a phased array ultrasonic detection method and a detection device for in-pipe detection, wherein a rectangular space formed by hollowing out the inside of an outer frame is combined, used for accommodating a detection structure and related components thereof, and provided for adjusting a working space used by a scanning structure and other devices. The combined outer frame provides an external frame structure of the assembly mounting area for supporting the entire device and securing the individual components, ensuring their stability and safety. The cooperation mounting bracket is located the combination outer frame inboard, and the cooperation mounting bracket of fixed with combination outer frame spiro union for support and other fixed devices, the drive shaft bearing frame is located the cooperation mounting bracket outside, links up with adjacent combination outer frame, is used for supporting and fixed drive bearing and provides the drive force. The drive gear is located inside the mating mounting frame and is used to drive the gear structure that provides the driving force from the drive bearing frame for driving and adjusting the movement of the scanning structure or other devices.
A phased array ultrasonic inspection method for in-pipe inspection, comprising:
S1: the sensor arrangement is characterized in that a group of ultrasonic sensors are arranged outside the pipeline to form a phased array. An outer frame 1 and a limit inner frame 2 are arranged outside the pipeline. When the pipeline is detected, the matched positioning structure 4 is installed at first, so that the feedback of the pipeline information is ensured. The co-located locating formations 4 are mounted externally of the conduit and are aligned with the conduit port locations so as to define the displacement positions of the scanning structures whilst the scanning structure information is transmitted.
S2: and ultrasonic wave is transmitted, a proper frequency and a proper beam angle are selected, and a plurality of sensors in the phased array transmit ultrasonic waves simultaneously. These ultrasonic waves pass through the wall of the pipe and enter the interior of the pipe. The frequency and beam angle are selected to take into account the pipe material and dimensions, as well as the type of defect that needs to be detected.
S3: and receiving ultrasonic waves, and receiving ultrasonic reflection signals in the pipeline by the sensor. Since the sensors are arranged in an array, the time and amplitude of the signal received by each sensor can be accurately recorded. These data will be used for subsequent analysis and processing.
S4: signal processing, processing the received signal, including time domain and frequency domain analysis. These analyses will determine if there are defects, corrosion or cracks inside the pipe. Signal processing may involve techniques such as signal filtering, gain control, and phase adjustment to improve signal quality and accuracy. The co-located positioning structure 4 receives these signals and gives further feedback.
S5: and (3) imaging reconstruction, namely reconstructing an image of the interior of the pipeline by using the received signal data through an imaging algorithm. These images will show the structure and defect location inside the pipe. The selection and optimization of the imaging algorithm is critical to accurately displaying details and defects inside the pipeline.
S6: and (3) analyzing the image, analyzing the reconstructed image, and determining the type, the position and the severity of the problem in the pipeline. This helps to assess the safety and reliability of the pipeline and provides an important reference for subsequent maintenance and repair work. Image analysis may involve image processing and pattern recognition techniques to automatically identify and mark defective areas in the pipeline.
In the above embodiment, for the weld seam detection, the angular S-scan/E-scan mode is adopted, and each scan step position corresponds to a set of S-scan/E-scan data. Taking S scan data as an example, the S scan data is formed by a plurality of pieces of a scan data in a certain angle range, that is, the weld detection data is also stored in a three-dimensional array form, the stored S scan data can be restored by combining parameter information such as beam angle, sampling resolution and the like, gaps exist among beams in the S scan image restored by the original a scan data, and filling correction is needed for the reconstructed image to be more continuous.
And filling and correcting the original S-scan image by adopting a bilinear interpolation algorithm.
The method calculates the pixel value of the P point, namely the amplitude value of the point in ultrasonic detection. Is known to be，/>，/>，/>Coordinate sum/>，/>，/>，/>Is used for the wave amplitude of the wave. Calculating/>, respectively, by utilizing a single linear interpolation method in the X direction of the coordinate axis，I.e.:
wherein/> For/>Pixel value of dot,/>For/>Pixel values of the dots; /(I)，/>，/>，/>Respectively/>，/>，/>，/>Pixel values for each point.
And then the amplitude value of the P point can be obtained by using a single linear interpolation method about the y direction, namely:
The stepping accuracy on the two-dimensional image reaches 0.2mm through bilinear interpolation.
In practical application, as shown in fig. 1-4, the phased array ultrasonic detection device for in-pipe detection comprises a covered outer frame 1, a limiting inner frame 2, an adjusting scanning structure 3 and a matched positioning structure 4, wherein the covered outer frame 1 consists of a plurality of combined outer frames 11 and is used for fixing and supporting the whole detection structure and protecting the internal detection device from being interfered and damaged by external environment. The limiting inner frame 2 is composed of a plurality of combined inner frames 21 and is positioned in the cover outer frame 1 for limiting and positioning the internal adjusting scanning structure 3 and ensuring the stable position and the movement track of the adjusting scanning structure during detection. The adjusting scanning structure 3 is arranged between the cover outer frame 1 and the limiting inner frame 2, and a plurality of adjusting scanning structures 3 are arranged. The ultrasonic sensor or other detection device is finely tuned and positioned as needed to achieve accurate detection of the interior of the pipeline. The cooperation positioning structure 4 is located between the adjustment scanning structure 3 and the detection structure and is used for ensuring the cooperation positioning of the detection performance. These structures ensure proper cooperation between the detection device and the inner wall of the pipe to obtain accurate detection results.
In practical application, as shown in fig. 1-2, a phased array ultrasonic detection device for in-pipe detection, the housing outer frame 1 comprises: the combined outer frame 11, the matched mounting frame 12, the driving bearing frame 13 and the driving gear 14 are hollow out to form a rectangular space in the combined outer frame 11, and the rectangular space is used for accommodating the detection structure and related components and providing a working space for adjusting the scanning structure 3 and other devices. The composite outer frame 11 provides an outer frame structure of the assembly installation area for supporting the entire device and fixing the respective components, guaranteeing stability and safety thereof. The matching installation frame 12 is positioned on the inner side of the combined outer frame 11, is fixedly connected with the matching installation frame 12 in a threaded manner with the combined outer frame 11 and is used for supporting and fixing other devices, and the driving bearing frame 13 is positioned on the outer side of the matching installation frame 12 and is connected with the adjacent combined outer frame 11 so as to be used for supporting and fixing driving bearings and providing driving force. A drive gear 14 is located inside the mating mounting frame 12, and a gear structure, which is driven by the drive shaft carrier 13, is used to drive and regulate the movement of the scanning structure 3 or other device.
In practical application, as shown in fig. 2, the limiting inner frame 2 comprises: the combined inner frame 21, the positioning locking piece 22 and the matched inner clamping frame 23 are arranged in a rectangular space formed by hollowing out the inside of the combined inner frame 21 and used for accommodating the detection structure and related components thereof and providing working space for adjusting the scanning structure 3 and other devices, and the matched inner clamping frame 23 is positioned on the inner side of the combined inner frame 21 and is vertically aligned with the matched inner clamping frame 23 on the same displacement vertical line of the matched mounting frame 12. This structure is used to connect the combined inner frame 21 and the mating inner frame 23, providing the functions of position fixing and mating with each other. The positioning locking member 22 is used for connecting the combined inner frame 21 and the locking member of the matched inner clamping frame 23, so that the stability and the fixity between the combined inner frame 21 and the matched inner clamping frame 23 are ensured, and the accurate positioning of the position is realized.
The adjustment scanning structure 3 includes: the drive adjusting rack 31, the contact detecting end 32, the assembly shield 33 and the scanner 34, the drive adjusting rack 31 is meshed with the drive gear 14, and the drive gear 14 drives the drive adjusting rack to adjust the position. The position of the scanning structure is adjusted by matching with the driving gear 14 so as to adapt to different pipeline sizes and shapes. The contact detection end 32 is located at one end of the drive adjustment rack 31 close to the detection direction, and is in contact with the pipe to be detected. This end is intended to contact the surface of the pipe, ensuring stability and accuracy during scanning. The interior of the assembly boot 33 is provided with a boot structure for the drive wheels for protecting the internal assembly from the external environment and providing additional safety and protection. This cover structure is typically threaded with the contact sensing tip 32 to secure and protect the internal components. The scanning element 34 is used to perform a pipe scanning action and may be an ultrasonic sensor, a camera or other detection device. It performs a scanning motion along the surface of the pipe by cooperating with the driving adjustment rack 31 and the driving gear 14, and collects data and image information inside the pipe.
In practical application, as shown in fig. 3-4, the phased array ultrasonic detection device for in-pipe detection, the matching positioning structure 4 comprises: the device comprises a limiting semicircular frame 41, a matched fixing sleeve 42, a positioning bolt 43 and a signal receiving and transmitting module 44, wherein two limiting semicircular frames 41 are a group, and cover the semicircular structure outside the pipeline to be detected. The design of the semi-circular frame enables the semi-circular frame to be tightly matched with the outer surface of the pipeline, and provides stable supporting and positioning functions. The matched fixing sleeve 42 is positioned at the outer side of the limiting semicircular frame 41 and is fixedly welded with the limiting semicircular frame 41. These sleeves serve to connect the two limit semi-circular frames 41 and ensure a stable and reliable connection between them. The positioning bolt 43 is used for guaranteeing the positioning bolt 43 with connection performance, is positioned at the outer side of the limiting semicircular frame 41 and is used for fixing and positioning the position between the two limiting semicircular frames 41 and ensuring the accuracy and stability of mutual matching. The signal receiving and transmitting module 44 is located inside the limit semicircular frame 41 and is used for performing signal transmission and positioning functions. These modules are responsible for receiving and transmitting the signals generated by the detection device and for locating and navigating to ensure the accuracy and precision of the detection.
In actual use, first, the cover outer frame 1 and the limit inner frame 2 are installed outside the pipe. When the pipeline is detected, the matched positioning structure 4 is installed at first, so that the feedback of the pipeline information is ensured. The co-located locating formations 4 are mounted externally of the conduit and are aligned with the conduit port locations so as to define the displacement positions of the scanning structures whilst the scanning structure information is transmitted.
During detection, the cover outer frame 1 and the limit inner frame 2 are continuously covered outside the pipeline. The displacement wheel is arranged in the assembly protective cover 33 and used for adjusting the contact between the scanning structure 3 and the outer wall of the pipeline. Once contacted, the displacement wheel moves the scanning structure as a whole towards the pipeline until reaching the position to be detected. Then, the drive gear 14 drives the drive adjusting rack 31 to move towards the pipeline, so that the contact detection end 32 is ensured to be attached to the pipeline, and the pipeline is scanned through the scanning piece 34.
The adjusting scanning structure 3 can drive the scanning structure to integrally move, and meanwhile, the adjusting scanning structure 3 which is arranged in a plurality of annular shapes can comprehensively collect information. The co-ordination positioning structure 4 is used for feedback and transmission of position distance information to ensure that the scanning member 34 (ultrasound scanning device) transmits the acquired information stably. The system design can effectively detect pipelines and ensure accurate transmission and comprehensive acquisition of information.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (10)
1. A phased array ultrasonic inspection method for in-pipe inspection, comprising:
arranging a group of ultrasonic sensors outside the pipeline, wherein the sensors form a phased array, and the sensors can be fixed on the wall of the pipeline or moved by equipment such as a robot;
selecting proper frequency and beam angle, transmitting ultrasonic waves simultaneously by a plurality of sensors in the phased array, and enabling the ultrasonic waves to penetrate through the wall of the pipeline and enter the interior of the pipeline;
the sensors receive ultrasonic reflection signals in the pipeline, and as the sensors are arranged in an array form, the time and the amplitude of the signals received by each sensor can be accurately recorded;
processing the received signal, including time domain and frequency domain analysis, to determine if defects, corrosion, cracks exist inside the pipeline, involving signal filtering, gain control, phase adjustment;
Reconstructing an image of the interior of the pipeline by using the received signal data through an imaging algorithm, and displaying the structure and defect positions of the interior of the pipeline;
the reconstructed image is analyzed to determine the type, location and severity of the problem within the pipeline, which facilitates evaluation of the safety and reliability of the pipeline, in conjunction with subsequent maintenance and repair operations.
2. The phased array ultrasonic detection method for in-pipe detection according to claim 1, wherein when the sensors are arranged, determining the area to be detected in the pipeline, and selecting a proper number and arrangement of the sensors according to the diameter and the geometric shape of the pipeline; the sensors are arranged in a linear, two-dimensional or three-dimensional manner to cover the entire pipe cross section or a specific area; determining the appropriate ultrasonic frequency and amplitude, and the angle and direction of emission; each sensor in the phased array is controlled to emit ultrasonic waves simultaneously or sequentially, ensuring that the signal covers the entire detection area.
3. A phased array ultrasonic testing method for in-pipe testing according to claim 1, wherein the sensors receive ultrasonic signals reflected internally of the pipe and record the time and amplitude of the signals received by each sensor; signal acquisition may involve multiple scans or transmission and reception at different angles to obtain comprehensive data.
4. The phased array ultrasonic detection method for in-pipe detection according to claim 1, wherein the preprocessing of the received signal comprises signal amplification, filtering, delay correction, etc.; phase control and dynamic focus control are performed to enhance signal quality and resolution.
5. The phased array ultrasonic testing method for in-pipe testing according to claim 1, wherein the received signal data is converted into an image of the interior of the pipe using an imaging algorithm, using two-dimensional imaging techniques, B-mode ultrasonic imaging or three-dimensional imaging techniques; analyzing the imaging result to identify the defects, corrosion and cracks in the pipeline; and quantitatively analyzing the detected problems, evaluating the size, shape, position and severity of the problems, and making a maintenance and repair scheme according to the analysis result to ensure the safe operation of the pipeline.
6. A detection apparatus for implementing the phased array ultrasonic detection method for in-tube detection according to any one of claims 1 to 5, comprising:
a detection structure, comprising: an outer frame, a limiting inner frame and an adjusting scanning structure are covered;
the cover is provided with an outer frame which consists of a plurality of combined outer frames;
The limiting inner frame consists of a plurality of combined inner frames;
The adjusting and scanning structure is positioned at the inner sides of the cover inner frame and the limit inner frame and is provided with a plurality of adjusting and scanning structures;
and the cooperation positioning structure is matched with the detection structure to ensure the detection performance.
7. The detection apparatus according to claim 6, wherein the housing outer frame includes:
the combined outer frame is internally hollowed out to form a rectangular hole cavity and provide a component mounting area;
The matched mounting frame is positioned on the inner side of the combined outer frame and is fixedly connected with the combined outer frame in a threaded manner;
The driving bearing frame is positioned at the outer side of the matched mounting frame and is connected with the outer sides of the adjacent assemblies;
and the driving gear is positioned on the inner side of the matched mounting frame and is provided with driving force by the driving bearing frame.
8. The detection device of claim 6, wherein the limit inner frame comprises:
The combined inner frame is internally hollowed out to form a rectangular hole cavity and provide a component mounting area;
the matched inner clamping frame is positioned on the inner side of the combined inner frame and is on the same vertical line with the displacement of the matched mounting frame;
and the positioning locking piece is used for connecting the combined inner frame and the matched inner clamping frame.
9. The detection apparatus of claim 6, the adjustment scanning structure comprising:
the driving adjusting rack is meshed with the driving gear and is driven by the driving gear to adjust the position;
The contact detection end is positioned at one end of the driving adjusting rack, close to the detection direction, and is contacted with the pipeline to be detected;
the assembly protection cover is positioned at one end of the contact detection end far away from the driving adjusting rack, and a driving wheel is arranged in the assembly protection cover;
and the scanning piece is in threaded connection with the contact detection end and is used for performing pipeline scanning action.
10. The detection apparatus of claim 6, the mating positioning structure comprising:
the two limit semicircular frames are arranged in a group and covered outside the pipeline to be detected;
the fixed sleeve is matched and positioned at the outer side of the limiting semicircular frame and welded with the limiting semicircular frame;
The positioning bolt is used for connecting the two limiting semicircular frames and guaranteeing the connection performance of the limiting semicircular frames;
the signal receiving and transmitting module is positioned at the inner side of the limiting semicircular frame and used for carrying out signal transmission and positioning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410685794.3A CN118243788B (en) | 2024-05-30 | 2024-05-30 | Phased array ultrasonic detection method and detection device for in-pipe detection |
Applications Claiming Priority (1)
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| CN202410685794.3A CN118243788B (en) | 2024-05-30 | 2024-05-30 | Phased array ultrasonic detection method and detection device for in-pipe detection |
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| KR20100039702A (en) * | 2008-10-08 | 2010-04-16 | 한전케이피에스 주식회사 | An automated ultrasonic scanner for dissimilar metal weld |
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| CN117368089A (en) * | 2023-11-22 | 2024-01-09 | 重庆市特种设备检测研究院 | Hydrogen storage container corrosion detection device |
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