171 results about "Phased array ultrasonics" patented technology

The invention discloses a composite board ultrasonic defect detection method which comprises the following steps: S1, fixing a carbon fiber circumferential winding composite pressure container on a bracket, and establishing a coordinate system with the axis of the container as a z axis; s2, a 40 MHz dry coupling phased array ultrasonic probe is attached to the scanning starting point, and the contact angle of the probe is recorded; s3, moving the probe along the spiral track of the outer surface of the container at the speed of 20mm / s, and collecting A-scanning echo signals of all array elements; s4, performing pulse compression and time domain deconvolution processing on the acquired signal to obtain a time domain echo sequence; s5, delay time is calculated according to the shell curvature, the array element signals are compensated, and focusing B-scanning data are generated; s6, splicing the B-scanning data at the step length of 0.5 mm * 0.5 mm, and reconstructing C-scanning data corresponding to the space coordinates; and S7, inputting the C-scanning data into the trained Transform network, and outputting defect types, sizes and three-dimensional coordinates. The method realizes high-frequency ultrasonic composite board defect accurate detection, remarkably improves the microcrack recognition rate, and is widely applied to safety evaluation scenes of high-pressure hydrogen storage tanks and pressure vessels.

The invention discloses a planar phased array ultrasonic transducer, and relates to the technical field of transducers, the planar phased array ultrasonic transducer comprises a 1-3 type piezoelectric composite board, a common positive electrode panel and a flexible circuit board, the 1-3 type piezoelectric composite board comprises a polymer frame and a plurality of PZT piezoelectric ceramic columns, all the PZT piezoelectric ceramic columns are embedded in the polymer frame in an array, and the PZT piezoelectric ceramic columns are connected with the flexible circuit board. One end of each PZT piezoelectric ceramic column is a positive electrode end, the other end of each PZT piezoelectric ceramic column is a negative electrode end, the common positive electrode panel is connected with the positive electrode ends of the PZT piezoelectric ceramic columns, the flexible circuit board is provided with a bonding pad area and at least one pin area, the bonding pad area is fixedly provided with a plurality of bonding pads, the pin area is fixedly provided with a plurality of pins, and the flexible circuit board is provided with a plurality of conductive terminals. All the pins, all the bonding pads and all the negative electrode ends of the PZT piezoelectric ceramic columns are in one-to-one correspondence, the bonding pads are electrically connected with the pins, and the bonding pads are connected with the negative electrode ends of the PZT piezoelectric ceramic columns; according to the invention, the PZT is applied to the planar phased array ultrasonic transducer.

The invention discloses an oil storage tank oil-water interface measurement system and method and a storage medium, and relates to the technical field of oil-water interface measurement, and the system comprises a data acquisition module, a data processing module, a decision support module and a data security module. According to the oil-water interface measuring system and method for the oil storage tank and the storage medium, a three-dimensional sensing network (distributed sensor network) is constructed by adopting a pressure sensor array and phased array ultrasonic scanning technology and combining dielectric property detection of a microwave dielectric constant sensor; the pressure, the dielectric constant, the liquid level and the vibration data in the tank body are obtained, basic data are provided for subsequent processing, the comprehensiveness of data obtaining can be improved through the sensing network, the pressure data are dynamically calibrated through Takagi-Sugeno fuzzy logic, the influence of temperature drift is effectively eliminated, and the accuracy of data obtaining is improved. The ultrasonic signals are subjected to feature enhancement through the generative adversarial network, and the emulsion layer boundary is accurately recognized.

The invention discloses a phased array ultrasonic detection rough surface coupling agent dynamic supplementing and sealing system which comprises a flexible sealing structure, a coupling agent supply unit, a pressure feedback control unit and a self-adaptive attaching structure. A flexible sealing structure is adopted to form a continuous liquid coupling film between the probe and the detected joint, and the coupling agent supply unit actively supplies liquid to keep the thickness of the liquid coupling film stable in a range of 0.5-1.5 mm so as to reduce ultrasonic energy loss and a blind area; in addition, the coupling agent liquid can be controlled not to leak or the leakage can be controlled within an acceptable range through the sealing mechanism, and the coupling agent supply unit is matched to continuously and stably supply the liquid, so that the coupling layer is ensured to be uninterrupted in the scanning process.

The application provides a hydrogen pipeline defect detection method and system, equipment and a storage medium, and belongs to the technical field of defect detection. The method comprises the following steps: acquiring phased array ultrasonic detection data, digital radiographic imaging data and hydrogen concentration data of a hydrogen pipeline; extracting defect boundary features based on the phased array ultrasonic detection data, extracting defect microstructure features based on the digital radiographic imaging data, and extracting hydrogen concentration spatiotemporal distribution features based on the hydrogen concentration data; constructing a modal correlation graph by taking the defect boundary features, the defect microstructure features and the hydrogen concentration spatiotemporal distribution features as nodes, and determining the edge weight between every two nodes in the modal correlation graph according to the mutual information of the two nodes; generating a multi-modal correlation feature vector based on the modal correlation graph; and obtaining a defect detection result of the hydrogen pipeline based on the multi-modal correlation feature vector. The application can improve the accuracy of hydrogen pipeline defect detection.

The invention discloses an underwater pouring concrete defect detection device, relates to the technical field of engineering detection, and particularly aims to solve the problems that an existing underwater pouring concrete defect detection method is limited by water medium attenuation, surface irregularity, concrete material characteristics and the like, and the detection efficiency is low. Therefore, the problems of unclear imaging, insufficient coverage and difficult effective acquisition and identification of defect signals are solved. The device is characterized by comprising an underwater operation platform, a multi-mode acoustic detection module integrated with a phased array ultrasonic and acoustic emission sensor array, a self-adaptive acoustic coupling mechanism, a high-precision positioning and three-dimensional scanning module and an intelligent data acquisition and processing unit. By adopting the technical scheme, efficient, accurate and reliable detection and three-dimensional positioning of internal and surface defects of the underwater pouring concrete structure are realized, and the underwater pouring concrete structure detection system has high detection precision, high applicability, high automation degree and good environmental robustness.

The invention discloses a cannonball shell ultrasonic automatic detection system and method, and the system comprises a feeding system which is used for placing a to-be-detected cannonball shell to a to-be-detected station; the ultrasonic detection system adopts a water immersion method or a semi-water immersion method to synchronously carry out ultrasonic flaw detection (A scanning, B scanning and C scanning, and is also suitable for a phased array ultrasonic detection method) on the barrel body and the bottom of the shell to be detected; the air-blowing system is used for carrying out air-blowing drainage operation on the detected cannonball shell so as to ensure that the whole cannonball shell is dry; and the discharging and sorting system is used for respectively placing the detected cannonball shells to appointed stations according to qualified or unqualified cannonball shells. The system has the characteristics of high workpiece detection efficiency and high accuracy, can perform ultrasonic scanning on workpieces of different specifications through different programs, is a professional automatic flaw detection system, and has the advantages of strong anti-interference capability, stable waveform, high precision, high reliability, simplicity in operation, high safety and good maintainability. The system not only can be used for detecting various shell shells, but also can be used for detecting tube bars or shells with different specifications.

The invention provides a phased array ultrasonic interface debonding detection method for a multilayer curved surface bonding structure, which comprises the following steps of: accurately calculating delay time of each array element in a phased array ultrasonic probe to a target focus by designing a delay block attached to a solid engine and aiming at a cylindrical special structure; therefore, in-phase superposition of sound waves at the target focus is achieved, focusing of sound beams is achieved, the problem of delay time calculation of sound waves emitted by all array elements of a phased array probe of a cylindrical structure is solved, and the problem of control over the deflection angle and the focusing depth of the sound beams synthesized after the sound waves pass through a plurality of curved surface interfaces is solved. Accurate positioning and visual representation of the debonding defect of the deep interface are realized. The technology provides a new technical means for accurately judging the interface debonding defect, and has important significance for guaranteeing the structural integrity and the use safety of the interface debonding defect.

The utility model belongs to the technical field of nondestructive testing, and particularly relates to a phased array scanning frame device for detecting plug-in fillet welds, which is characterized in that a clamping mechanism realizes the action of clamping a sliding plate to adjust the clamping thickness of a device; the moving mechanism realizes the action of adjusting the position of the phased array ultrasonic probe by the upper moving plate; and the angle adjusting mechanism realizes the action of rotating the bottom plate to adjust the angle of the phased array ultrasonic probe. According to the phased array scanning frame device for detecting the plug-in fillet weld, a clamping motor, an upper moving motor and a lower moving motor are synchronously controlled through a PLC, a clamping sliding plate is adjusted to enable the device to be stably connected to the surface of a detected workpiece, movement of an upper moving plate is adjusted, the position of a phased array ultrasonic probe is changed, and the angle of a rotating bottom plate is adjusted; the angle of the phased array ultrasonic probe for detecting the welding seam is changed, the elliptical track of the inserted welding seam is detected, and the technical problem that an existing scanning device cannot detect the elliptical track of the inserted welding seam is solved.

The invention relates to the technical field of nondestructive testing of power systems, in particular to a phased array ultrasonic testing method and system for internal defects of a wall bushing. Comprising the following steps that the outer surface of a metal layer of the wall bushing is cleaned and polished; measuring the outer diameter of the wall bushing and the thickness of a metal layer; a phased array ultrasonic probe is placed on the surface of the processed metal layer in a coupling mode, and a center array element of the phased array ultrasonic probe is activated to collect A scanning signals; setting a focusing depth and a scanning angle range according to the thickness of the metal layer; and activating all array elements of the phased array ultrasonic probe, and starting a gain compensation mode of the phased array ultrasonic flaw detector. According to the method, the multi-array-element electronic scanning and real-time imaging technology is utilized, a large-area area can be covered through single-time fan-shaped scanning, early-stage defects (such as micro air gaps and cracks) which do not cause temperature rise can be sensitively recognized, the detection efficiency and the detection capacity are remarkably improved, and the problems of infrared leak detection and low radiographic detection efficiency are effectively solved.

The invention discloses a pile foundation concrete accurate pouring control system and method based on multi-source sensing fusion. The pile foundation concrete accurate pouring control system comprises a sensing layer and a control layer, wherein the sensing layer comprises a phased array ultrasonic probe, a binocular vision sensor and a laser ranging array; the modeling layer comprises a three-dimensional hole shape reconstruction module and a BIM digital modeling engine; the data layer comprises a real-time monitoring database and a multi-source data fusion center; the decision-making layer comprises a concrete dynamic evaluation model and a BIM visual platform; the execution layer comprises a self-adaptive PID controller used for adjusting the concrete pumping rate according to the decision instruction, and a three-dimensional visualization terminal used for displaying the BIM model with the tolerance zone in real time. According to the method, a BIM model containing dynamic compensation is constructed through ultrasonic three-dimensional scanning, closed-loop control is achieved by fusing multi-source sensing data, and tolerance band penetration early warning and self-adaptive PID adjustment are combined. The hidden defect discovery rate is improved, and the comprehensive construction efficiency is improved.

The invention provides an aluminum bar internal inclusion and pore detection system based on an ultrasonic flaw detection technology, and relates to the technical field of ultrasonic detection, and the system comprises a construction module which is used for constructing a detection module by taking an end face center point of an aluminum bar as a first reference position, taking the center of a phased array ultrasonic probe array as a second reference position, and taking a reference positioning edge of a detection table as a third reference position; a dynamic adjustable detection coordinate system is constructed; the calculation module is used for dividing the detection coordinate system into a plurality of hierarchical scanning sub-regions according to the two-dimensional spatial topological characteristics of the detection coordinate system and the actual size and shape distribution rule of the end face of the aluminum bar; and according to the spatial position and the area of each scanning sub-region and the geometric distribution characteristic of the distance between each scanning sub-region and the core region of the end surface of the aluminum bar, calculating to obtain a focusing delay parameter and a scanning path parameter corresponding to each sub-region. According to the invention, accurate and efficient detection of non-metallic inclusions and pore tiny defects in the aluminum bar is realized.

The invention relates to a method for detecting microcracks on the inner wall of a wall enclosure superheater of a boiler. The method comprises the following steps: macroscopically identifying and preliminarily screening a high-risk area; creating an endoscope channel based on the primary suspicious area list and performing primary peeping on the inner wall; carrying out detection surface preparation and acoustic coupling optimization; data acquisition is carried out through accurate arrangement of the small-sound-velocity self-coupling phased array ultrasonic probe; extracting defect signal features and carrying out three-dimensional digital modeling; performing crack depth accurate quantization based on a time of flight diffraction mode; carrying out comprehensive data analysis and evaluating a security level; and integrating detection results, and generating a digital file based on the results. According to the invention, standardization of the detection process and systematization of data management can be realized, the detection efficiency and accuracy are greatly improved, a scientific basis is provided for equipment life prediction and maintenance decision, and the safe operation level of the boiler is effectively improved.

Disclosed is a method for detecting an austenitic weld based on an ultrasonic-magnetic combination technique, and belongs to the field of non-destructive testing technique, comprising dividing the austenitic weld into a plurality of zones along a thickness direction to obtain divided zones; detecting the divided zones based on phased array ultrasonic testing (PAUT) and weak magnetic detection; and determining priorities of the PAUT and the weak magnetic detection according to a position of each of the zones, a defect type and a position of a zone in which a defect is located. The method integrates the PAUT technique and the weak magnetic detection technique to address issues such as missed detection, incomplete coverage, and the inability to detect defects when using an ultrasonic method for detecting the austenitic weld, thereby providing technical assurance for the application of austenitic stainless steel materials in high-end equipment and large-scale projects.

The invention provides a honeycomb sandwich structure defect detection system and method based on a two-dimensional phased array sensor, and belongs to the technical field of nondestructive testing, the honeycomb sandwich structure defect detection system comprises the two-dimensional phased array sensor, the two-dimensional phased array sensor is a two-dimensional matrix array formed by arranging M * N sub-array elements which can be independently triggered to generate wave sources; the phased array ultrasonic unit is used for transmitting and receiving ultrasonic signals and sequentially exciting part of sub-array elements in the two-dimensional phased array sensor to synthesize electronic scanning sound beams, so that the sequence information of each electronic scanning sound beam corresponds to the spatial position information; and the signal processing and display unit obtains the ultrasonic signal, carries out reverse deduction by combining the sequence information of the electronic scanning sound beam to obtain space position information, and judges whether defects exist or not. Real-time plane imaging detection can be achieved without depending on movement of a mechanical driving sensor, and the method is convenient to use in a narrow space, is particularly applied to a honeycomb structure, can obviously distinguish whether abnormity of ultrasonic signals is caused by changes of the honeycomb structure or defects, improves the defect detection rate and reduces the misjudgment rate.

The invention relates to the technical field of tee joint repairing, and particularly discloses a final-stage superheater tee joint repairing device and method.The method comprises the steps that magnetic powder detection and phased array ultrasonic detection are adopted, defective weld joints of a final-stage superheater tee joint are detected, and the number, length and depth of crack defects are determined; on the basis of defect conditions detected in magnetic powder detection and phased array ultrasonic detection, a defect elimination mode is evaluated, and a U-shaped repair welding groove is prepared by polishing an area subjected to defect elimination; u-steel is adopted for fixing the positions, 2000 mm away from the two sides of a tee joint of the superheater tee joint collecting box, of the tee joint, and meanwhile a connecting pipe, connected with a main steam pipeline, of the tee joint is fixed to the position 300-350 mm away from a large cover wall; compared with the conventional single detection means, the combined detection mode of magnetic powder detection and phased array ultrasonic detection can comprehensively confirm the number, length, depth and specific position of crack defects, avoids the defect which is left in a detection blind area and is not cleared, and reduces the risk of secondary cracking after repair from the source.

This disclosure provides a wedge and design method for a multipath acoustic attenuation phased array ultrasonic testing probe. The wedge includes a wedge body, multiple silencing grooves, and a damping block. The extension direction, spacing, and depth of each silencing groove are configured such that at least a portion of the reflected transverse wave generated at the detection surface can be guided to an attenuation interface formed by the groove wall of the silencing groove and the damping block. Furthermore, the reflected longitudinal wave generated at the detection surface undergoes at least six interface reflections within the wedge body before returning to the probe direction. The acoustic characteristics of the damping block are configured to absorb the reflected transverse wave. The reflected transverse wave is attenuated at the attenuation interface through a combination of scattering by the silencing groove and absorption by the damping block. After at least six interface reflections, the acoustic component of the reflected longitudinal wave returning to the probe direction forms a 180° phase difference with the incident longitudinal wave emitted by the probe, thus being attenuated through phase interference.

The invention belongs to the technical field of nondestructive testing of concrete structures, and relates to an urban underground comprehensive pipe gallery concrete engineering quality evaluation method which comprises the following steps: acquiring an original acoustic emission signal and performing structured processing to generate a structured acoustic emission event data object containing multi-dimensional feature information; carrying out feature correction and verification on the data object in combination with the environment data, and generating a focusing scanning instruction containing a target three-dimensional coordinate and a risk confidence coefficient; generating a parameterized adaptive focusing scanning configuration packet through physical parameter reverse mapping based on energy spectrum characteristics, driving a phased array ultrasonic system to perform targeted imaging on a target area and extracting acoustic image characteristics of defects; and finally, comparing the correlation between the data object and the image features, executing closed-loop verification, and adaptively updating discrimination parameters for risk determination. The technical problems of insufficient evaluation accuracy and verification lag caused by mutual separation of passive monitoring and active detection in the prior art are solved.

The invention discloses a phased array ultrasonic full-focus imaging frame rate testing device and method, and relates to the technical field of phased array ultrasonic full-focus imaging. The phased array ultrasonic full-focusing imaging frame rate testing device comprises an upper computer, a phased array ultrasonic board card, an array phased array probe, a flat-bottomed hole test block and a scanner. During testing, the scanning device is used for controlling the array phased array probe to scan right above the flat-bottomed hole test block according to a preset scanning speed, ultrasonic scanning images are acquired, each frame of image data in the ultrasonic scanning images is checked through the upper computer, and according to the number of image frames at intervals between frame images where the highest waves of the flat-bottomed holes are located on the images, the highest waves of the flat-bottomed holes are located on the flat-bottomed hole test block, and the highest waves of the flat-bottomed holes are located on the flat-bottomed hole test block. And calculating the average interval image frame number, and measuring the imaging frame rate in combination with the actual scanning speed of the scanner and the hole center distance in the horizontal direction between the adjacent flat-bottomed holes. The testing device and method are used for solving the problem that a conventional phased array full-focus detection acquisition image frame rate unrelated test method can only depend on software calculation and lacks credibility.

The embodiment of the application provides a round bar phased array ultrasonic detection front surface cleaning device and application, the surface cleaning device comprises a barrel, one end of the barrel is provided with a mounting piece, the other end is provided with a first through hole; the outer side of the first through hole is provided with an end cover, the end cover is provided with a second through hole, a rubber ring is arranged between the end cover and the barrel, the center of the second through hole and the center of the rubber ring are located on the axis of the barrel, and the inner diameter of the rubber ring is less than or equal to the hole diameter of the first through hole and the second through hole; a water inlet pipe and a drain are arranged on the barrel, two or more than two nozzles towards the round bar to be cleaned are arranged in the barrel, and the water inlet pipe and the nozzle are connected through a running knot pipe. The distance between the nozzle in the barrel and the round bar and the spraying angle can be adjusted as required, so that the best cleaning effect of the surface of the round bar is achieved. The cleanliness of the coupling water in the ultrasonic cavity is improved, the accuracy of ultrasonic detection is ensured, the cleaning frequency of the ultrasonic cavity is reduced, and the detection efficiency of the steel is improved.

The application discloses a metal shaft ultrasonic nondestructive flaw detection method based on an intelligent sensing system and belongs to the technical field of metal component nondestructive detection. The method emits ultrasonic signals to a metal shaft to be detected which has been subjected to surface cleaning treatment through a phased array ultrasonic detector subjected to calibration processing, obtains echo signals, images after preprocessing of the echo signals, generates a three-dimensional image of the metal shaft, extracts metal shaft damage feature data based on the three-dimensional image of the metal shaft, inputs the metal shaft damage feature data into a metal shaft damage intelligent classification model to obtain a metal shaft flaw detection result, and generates a metal shaft flaw detection report accordingly. The application guarantees detection precision through surface cleaning and instrument calibration, realizes accurate identification and classification of internal damage of the metal shaft by combining three-dimensional imaging, feature extraction and an intelligent classification model, has the advantages of high detection efficiency and good accuracy, and can be effectively applied to nondestructive flaw detection of metal shafts.

This invention discloses a phased array ultrasonic defect intelligent identification and data analysis system, relating to the field of PAUT (Polymerization and Angiography). It includes: an acquisition module for driving a phased array ultrasonic sensor array to perform weld seam scanning according to preset scanning rules, simultaneously acquiring and outputting ultrasonic echo time-series data across the entire depth range of the weld seam; and a preprocessing module for receiving the ultrasonic echo time-series data, performing data correction, noise filtering, and initial screening of effective signals, while simultaneously receiving feature anchoring parameters output by a mapping module, refining the signals in the corresponding regions, and outputting the results. This invention enables continuous, blind-zone-free scanning across the entire thickness and width range of the weld seam, simultaneously completing accurate echo signal correction and defect feature extraction, improving defect identification accuracy through closed-loop adaptive processing, accurately determining defect types and calculating their spatial location, size, and other core parameters, and simultaneously completing defect data statistical analysis and welding process correlation.

This invention provides a method, apparatus, and system for detecting the quality of adhesive backing, relating to the field of adhesive backing quality detection technology. The method includes: obtaining an ultrasonic feature vector QA; obtaining a similarity list λ; traversing λ, if λ... i >ρ i If the overall adhesive backing area of ​​the component to be tested meets the preset qualification conditions, then the overall adhesive backing area to be tested, TE, is generated based on the ultrasonic signal acquired by the phased array ultrasonic probe. The areas containing adhesive backing in TE are extracted to obtain a list of sub-adhesive backing images A corresponding to TE. A is then... j The corresponding sub-ultrasound feature vector is concatenated with the sub-image feature vector to obtain A. j The corresponding mixed feature vector H j According to H j This invention determines whether the overall quality of the adhesive backing area of ​​the component to be tested meets the preset qualification conditions. It can improve the accuracy of testing, reduce computing power consumption, and improve the efficiency of testing adhesive backing quality.

The application discloses an ultrasonic phased array focusing control device and a control system. The ultrasonic phased array focusing control device comprises a host computer, a switch signal control module, a lower computer, a DAC module and a phased array ultrasonic transducer; the host computer is connected with the switch signal control module, and the switch signal control module is connected with the lower computer; the host computer is used for sending pulse train length and repetition frequency data to the switch signal control module; the switch signal control module is used for generating a switch level signal according to the pulse train length and repetition frequency data and transmitting the switch level signal to the lower computer; the lower computer is connected with the DAC module, the DAC module is connected with the phased array ultrasonic transducer, the lower computer is used for controlling the DAC module to convert the switch level signal into a sinusoidal signal and transmitting the sinusoidal signal to the phased array ultrasonic transducer, and the phased array ultrasonic transducer is used for converting the sinusoidal signal into an ultrasonic signal for transcranial magnetic acoustic stimulation. The application has the advantages of low complexity, high synchronization, small error and high focusing resolution.

1. Name of the product in this design: Phased array ultrasonic probe protective cover. 2. Purpose of this design: For use as a cardiac ultrasound probe. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

The invention discloses a pipeline ultrasonic multi-mode separation method and system and a storage medium, and the method comprises the steps: scanning a to-be-detected pipeline through a phased array ultrasonic detection system, and obtaining the full-matrix data of the to-be-detected pipeline; and inputting the full-matrix data of the to-be-detected pipeline into the trained auto-encoder for processing to obtain a defect echo signal of the to-be-detected pipeline. Wherein in the self-encoder training process, a training set is composed of full matrix data obtained according to different-mode ultrasonic waves and defect response models and different-mode ultrasonic waves and boundary response models, and random disturbance is further added; according to the method, training data of 12 different propagation modes are adopted for training during training, and the multi-mode fusion training strategy enables an auto-encoder to learn deep physical characteristics of ultrasonic propagation, so that the separation capability of defect echoes and boundary echoes is remarkably improved; and finally, clearer defect display and more excellent signal-to-noise ratio performance are realized in full-focusing imaging.

The utility model relates to a phased array ultrasonic detection probe fixing and positioning device, which comprises a pipeline body, a support and a detection assembly, the pipeline body is placed inside the support, the detection assembly is sleeved on the outer side of the pipeline body, and the detection assembly comprises a mounting chain, a first probe, a second probe and a clamping unit, an L-shaped limiting plate is arranged on the outer side of the second probe, a clamping groove is formed in the bottom of the horizontal section of the L-shaped limiting plate, the outer side of the second probe and the clamping groove are installed in a clamped mode, and under the action of the clamping groove in the horizontal section of the L-shaped limiting plate, the position of the second probe is limited; and the L-shaped limiting plate is connected with the clamping unit through the nylon cable tie, so that the L-shaped limiting plate can stably limit the second probe at the position after installation, thereby ensuring that phased array ultrasonic detection atlas data is complete and a coupling agent does not flow to the body of an operator.

A phased array ultrasound system includes one or more ultrasound array modules having respective array elements, each array element connected to a respective switch. Each array module receives a set of drive signals, each drive signal having a respective phase value, and provides the set of drive signals to each switch. The switches are controlled such that the drive signal provided to a given array element has a phase value closest to an ideal phase value for focusing ultrasonic energy at a selected focal position. At least two modules of the array module each receive a unique set of module-specific drive signals having a respective unique set of phases. A given unique set of phase values may be determined based on the ideal set of phases to focus ultrasonic energy at one or more locations (e.g., a selected focus location or a selected focus region).

The invention provides a hydrogen conveying pipeline defect detection method and system, equipment and a storage medium, and belongs to the technical field of defect detection.The method comprises the steps that phased array ultrasonic detection data, digital ray imaging data and hydrogen concentration data of a hydrogen conveying pipeline are obtained; defect boundary features are extracted based on phased array ultrasonic detection data, defect microstructure features are extracted based on digital ray imaging data, and hydrogen concentration space-time distribution features are extracted based on hydrogen concentration data; the defect boundary features, the defect microstructure features and the hydrogen concentration space-time distribution features serve as nodes to construct a modal association graph, and the edge weight between every two nodes in the modal association graph is determined by mutual information of the two nodes; generating a multi-modal association feature vector based on the modal association graph; and obtaining a defect detection result of the hydrogen conveying pipeline based on the multi-modal correlation feature vector. According to the invention, the accuracy of hydrogen conveying pipeline defect detection can be improved.

The utility model provides a test block for a variable coupling medium of an annular phased array ultrasonic probe, and belongs to the technical field of pipeline ultrasonic internal detection. A cabin is arranged in the middle of the test block, the state of capturing signals by an ultrasonic probe under different media can be simulated by injecting a coupling medium, and probe debugging under the medium condition is completed. An arc-shaped contact surface is arranged at the bottom of the test block, and the test block is suitable for testing the annular phased array ultrasonic probe. Meanwhile, the end cover of the test block can be replaced, and different pipeline wall thicknesses can be simulated by replacing end covers with different thicknesses. An operator injects coupling media such as water or crude oil into the test block, the test block is attached to the surface of an annular probe of an ultrasonic inner detector, and ultrasonic testing under different media can be achieved. Before detection, the test block is used for testing in a corresponding medium environment, and a better signal can be obtained, so that whether a probe works normally or not is judged.