Pipeline defect quantitative detection method, device, electronic equipment and storage medium

Abstract

The present invention provides a pipeline defect quantitative detection method, device, electronic device and storage medium, belonging to the field of non-destructive testing technology, the method comprising: receiving an echo signal and a modal waveguide signal after electromagnetic ultrasonic waves are reflected by a pipeline defect to be detected in the pipeline to be detected; calculating the axial length of the pipeline defect to be detected along the pipeline to be detected based on the echo signal; calculating the radial depth of the pipeline defect to be detected along the pipeline to be detected based on the modal waveguide signal; calculating the circumferential width of the pipeline defect to be detected along the pipeline to be detected based on the echo signal and the radial depth. The present invention can quantitatively calculate the axial length, circumferential width and radial depth of pipeline defects, providing accurate data support for pipeline maintenance and care.

Description

Technical Field

[0001] The present invention relates to the technical field of nondestructive testing, and in particular to a pipeline defect quantitative detection method, device, electronic equipment and storage medium. Background Art

[0002] In industrial production, pipeline systems are important equipment for transporting various fluid media and are widely used in the fields of petroleum, natural gas, chemical industry, metallurgy, etc. These pipelines are prone to defects such as wear, corrosion and cracks due to long-term scouring, corrosion and mechanical stress of fluids. In order to ensure the safety and reliability of the pipeline system, regular pipeline inspection is essential.

[0003] In the prior art, due to the complex internal structure of the pipeline and the narrow space, traditional detection methods are easily affected by detection blind spots and signal attenuation, making it difficult to achieve high-precision defect detection. For non-destructive inspection methods, small-diameter pipelines are inspected using flexible probes. However, when ultrasonic signals propagate in small-diameter pipelines, they are prone to multiple reflections and attenuation, resulting in a decrease in the signal-to-noise ratio and difficulty in ensuring detection accuracy.

[0004] It can be seen that the existing technology for detecting pipeline defects has technical problems such as low detection accuracy and inability to quantitatively detect defects. Summary of the invention

[0005] In view of this, it is necessary to provide a pipeline defect quantitative detection method, device, electronic equipment and storage medium to solve the technical problem of low detection accuracy in the prior art for detecting internal defects of pipelines.

[0006] In order to solve the above technical problems, on the one hand, the present invention provides a pipeline defect quantitative detection method, comprising:

[0007] Receiving the echo signal and the modal guided wave signal after the electromagnetic ultrasonic wave is reflected by the pipeline defect to be inspected in the pipeline to be inspected;

[0008] Calculate the axial length of the pipeline defect to be detected along the pipeline to be detected based on the echo signal;

[0009] Calculating the radial depth of the pipeline defect to be inspected along the pipeline to be inspected based on the modal guided wave signal;

[0010] The circumferential width of the pipeline defect to be inspected along the pipeline to be inspected is calculated based on the echo signal and the radial depth.

[0011] As a possible implementation manner of the present invention, in this implementation manner, the receiving of the echo signal and the modal waveguide signal after the electromagnetic ultrasonic wave is reflected by the pipeline defect to be detected in the pipeline to be detected includes:

[0012] Exciting a sinusoidal electromagnetic ultrasonic wave modulated by a Hamming window at a first position of the pipeline to be inspected;

[0013] An echo signal and a modal waveguide signal generated by the sinusoidal electromagnetic ultrasonic wave being reflected by a pipeline defect in the pipeline to be inspected are received at a second position of the pipeline to be inspected.

[0014] As a possible implementation manner of the present invention, in this implementation manner, the calculating the axial length of the defect in the pipeline to be detected along the pipeline to be detected based on the echo signal includes:

[0015] Determine, based on the echo signal, a time difference between a first end and a second end of the pipeline defect to be detected reflecting the electromagnetic ultrasonic wave;

[0016] The axial length of the defect in the pipeline to be detected along the pipeline to be detected is calculated based on the propagation speed of the electromagnetic ultrasonic wave in the pipeline to be detected and the time difference.

[0017] As a possible implementation manner of the present invention, in this implementation manner, calculating the radial depth of the pipeline defect to be detected along the pipeline to be detected based on the modal guided wave signal includes:

[0018] determining a first amplitude of the modal guided wave signal;

[0019] Based on the pre-fitted amplitude-radial depth relationship curve, the radial depth of the pipeline defect to be inspected along the pipeline to be inspected is calculated in combination with the first amplitude.

[0020] As a possible implementation manner of the present invention, in this implementation manner, the fitting of the amplitude-radial depth relationship curve includes:

[0021] Acquire first amplitudes of modal guided wave signals respectively generated by reflections of the electromagnetic ultrasonic waves by pipeline defects of multiple known radial depths to obtain multiple first amplitudes;

[0022] An amplitude-radial depth relationship curve is fitted based on the plurality of known radial depths and the plurality of first amplitudes.

[0023] As a possible implementation manner of the present invention, in this implementation manner, calculating the circumferential width of the pipeline defect to be detected along the pipeline to be detected based on the echo signal and the radial depth includes:

[0024] determining a second amplitude of the echo signal;

[0025] Based on the pre-fitted amplitude-circumferential width relationship curve at different radial depths, the circumferential width of the defect in the pipeline to be inspected along the pipeline to be inspected is calculated in combination with the second amplitude.

[0026] As a possible implementation manner of the present invention, in this implementation manner, the fitting of the amplitude-circumferential width relationship curve includes:

[0027] Acquire second amplitudes of echo signals respectively generated by reflection of the electromagnetic ultrasonic waves by a plurality of pipeline defects with known circumferential widths at different radial depths to obtain a plurality of second amplitudes;

[0028] A curve of amplitude-circumferential width relationship at different radial depths is fitted based on the multiple known circumferential widths and the multiple second amplitudes.

[0029] On the other hand, the present invention also provides a pipeline defect detection device, comprising:

[0030] A signal acquisition module, used for receiving an echo signal and a modal waveguide signal after the electromagnetic ultrasonic wave is reflected by a pipeline defect to be inspected in the pipeline to be inspected;

[0031] An axial length calculation module, used to calculate the axial length of the pipeline defect to be detected along the pipeline to be detected based on the echo signal;

[0032] A radial depth calculation module, used for calculating the radial depth of the pipeline defect to be detected along the pipeline to be detected based on the modal guided wave signal;

[0033] A circumferential width calculation module is used to calculate the circumferential width of the pipeline defect to be detected along the pipeline to be detected based on the echo signal and the radial depth.

[0034] On the other hand, the present invention also provides an electronic device, including a memory and a processor, wherein:

[0035] The memory is used to store programs;

[0036] The processor is coupled to the memory and is used to execute the program stored in the memory to implement the steps in the pipeline defect quantitative detection method described in any of the above implementations.

[0037] On the other hand, the present invention also provides a computer-readable storage medium for storing a computer-readable program or instruction, which, when executed by a processor, can implement the steps in the pipeline defect quantitative detection method described in any of the above implementations.

[0038] The beneficial effects of the present invention are as follows: the pipeline defect quantitative detection method provided by the present invention obtains the modal waveguide signal and echo signal generated by the pipeline defect reflecting the electromagnetic ultrasonic wave based on the propagation characteristics of the electromagnetic ultrasonic wave in the pipeline, and analyzes the modal waveguide signal and the echo signal, so as to accurately identify the position and shape of the wear defect. Compared with the traditional ultrasonic detection, the modal waveguide and the echo have less signal reflection and attenuation in the pipeline, and the signal-to-noise ratio is high, so that more precise defect detection can be achieved, and the axial length, circumferential width and radial depth of the pipeline defect can be quantitatively calculated, so as to provide accurate data support for pipeline maintenance and servicing. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0040] Figure 1 A schematic diagram of a flow chart of a pipeline defect quantitative detection method provided by an embodiment of the present invention;

[0041] Figure 2 An application scenario diagram of a pipeline defect quantitative detection method provided by an embodiment of the present invention;

[0042] Figure 3 A schematic diagram of a flow chart of a signal acquisition method provided by an embodiment of the present invention;

[0043] Figure 4 A schematic diagram of a flow chart of an axial length calculation method provided by an embodiment of the present invention;

[0044] Figure 5 A waveform diagram of an echo signal of axial length provided by an embodiment of the present invention;

[0045] Figure 6 A schematic diagram of a flow chart of a radial depth calculation method provided by an embodiment of the present invention;

[0046] Figure 7 A waveform diagram of a modal waveguide signal provided by an embodiment of the present invention;

[0047] Figure 8 A schematic flow chart of a method for acquiring an amplitude-radial depth relationship curve provided by an embodiment of the present invention;

[0048] Fig. 9 An amplitude-radial depth relationship curve provided by an embodiment of the present invention;

[0049] Fig.10A schematic flow chart of a circumferential width calculation method provided in an embodiment of the present invention;

[0050] Fig.11 A schematic diagram of an echo signal of circumferential width provided by an embodiment of the present invention;

[0051] Fig.12 A schematic flow chart of a method for obtaining an amplitude-circumferential width relationship curve provided in an embodiment of the present invention;

[0052] Fig.13 An amplitude-circumferential width relationship curve provided by an embodiment of the present invention;

[0053] Fig.14 A schematic diagram of the structure of a pipeline defect detection device provided by an embodiment of the present invention;

[0054] Fig.15 A schematic diagram of the structure of an electronic device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0055] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0056] The descriptions of "first", "second", etc. involved in the embodiments of the present invention are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the technical features defined as "first" and "second" may explicitly or implicitly include at least one of the features.

[0057] Reference to an "embodiment" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0058] The present invention provides a pipeline defect quantitative detection method, device, electronic equipment and storage medium, which are described below respectively.

[0059] Figure 1 A schematic diagram of an embodiment of the pipeline defect quantitative detection method provided by the present invention is shown in FIG. Figure 1 As shown, the pipeline defect quantitative detection method includes:

[0060] S101, receiving an echo signal and a modal guided wave signal after the electromagnetic ultrasonic wave is reflected by a pipeline defect to be inspected in the pipeline to be inspected;

[0061] S102, calculating the axial length of the defect in the pipeline to be detected along the pipeline to be detected based on the echo signal;

[0062] S103, calculating the radial depth of the defect in the pipeline to be inspected along the pipeline to be inspected based on the modal guided wave signal;

[0063] S104, calculating the circumferential width of the defect in the pipeline to be inspected along the pipeline to be inspected based on the echo signal and the radial depth.

[0064] The pipeline defect quantitative detection method provided by the embodiment of the present invention can be applied to the quantitative detection of defects in small-diameter pipelines, such as Figure 2 As shown, it is an application scenario diagram of the pipeline defect quantitative detection method provided by an embodiment of the present invention, comprising: a pipeline to be detected, an electromagnetic ultrasonic excitation device, a signal receiving device, an oscilloscope and a computer, wherein the electromagnetic ultrasonic excitation device excites electromagnetic ultrasonic waves in the pipeline to be detected, and the electromagnetic ultrasonic waves propagate along the pipeline to be detected and are emitted by the pipeline defect to be detected in the pipeline to be detected, generating a modal waveguide signal and an echo signal, the signal receiving device is used to receive the modal waveguide signal and the echo signal, and display them on the oscilloscope, and the computer system is used to analyze the modal waveguide signal and the echo signal to realize the quantitative detection of the pipeline defect to be detected.

[0065] In the embodiment of the present invention, the echo signal refers to a waveform signal in the opposite direction generated when the electromagnetic ultrasonic wave propagates along the pipeline to be detected and the pipeline defect to be detected in the pipeline to be detected reflects the electromagnetic ultrasonic wave. The modal guided wave signal refers to a modal conversion signal generated when the electromagnetic ultrasonic wave propagates along the pipeline to be detected and the wall thickness of the pipeline is uneven, that is, the frequency-thickness product is different.

[0066] In an embodiment of the present invention, when calculating the axial length, radial depth and circumferential width of a pipeline defect, a preset mathematical model may be used for calculation, wherein the first mathematical model is used to calculate the axial length of the pipeline defect to be detected along the pipeline to be detected according to the echo signal, the second mathematical model is used to calculate the radial depth of the pipeline defect to be detected along the pipeline to be detected according to the modal waveguide signal, and the third mathematical model is used to calculate the circumferential width of the pipeline defect to be detected along the pipeline to be detected according to the echo signal and the radial depth, wherein the first mathematical model, the second mathematical model and the third mathematical model may be obtained in advance through experiments. The calculation of the axial length, radial depth and circumferential width of the pipeline defect to be detected and the specific acquisition methods of the above three mathematical models will be described in detail later in the present invention.

[0067] The pipeline defect quantitative detection method provided by the present invention is based on the characteristics of electromagnetic ultrasonic wave propagation in the pipeline, obtains the modal waveguide signal and echo signal generated by the pipeline defect reflecting the electromagnetic ultrasonic wave, analyzes the modal waveguide signal and the echo signal, and can accurately identify the position and shape of the wear defect. Compared with traditional ultrasonic detection, the modal waveguide and echo have less signal reflection and attenuation in the pipeline, and the signal-to-noise ratio is high, so that more precise defect detection can be achieved, and the axial length, circumferential width and radial depth of the pipeline defect can be quantitatively calculated, providing accurate data support for pipeline maintenance and servicing.

[0068] As a possible implementation mode of the present invention, in this implementation mode, Figure 3 As shown, the echo signal and the modal guided wave signal after the electromagnetic ultrasonic wave is reflected by the pipeline defect to be detected in the pipeline to be detected are received, including:

[0069] S301, exciting a sinusoidal electromagnetic ultrasonic wave modulated by a Hamming window at a first position of a pipeline to be inspected;

[0070] S302, receiving, at a second position of the pipeline to be inspected, an echo signal and a modal waveguide signal generated after the sinusoidal electromagnetic ultrasonic wave is reflected by a pipeline defect in the pipeline to be inspected.

[0071] In the embodiment of the present application, what is excited at the first position of the pipeline to be inspected is the T(0,1) modal electromagnetic ultrasonic wave modulated by the Hamming window, and what is received at the second position is the echo signal and the F(1,2) modal guided wave signal generated by the T(0,1) modal electromagnetic ultrasonic wave reflected by the pipeline defect.

[0072] In the embodiment of the present invention, the sinusoidal electromagnetic ultrasonic wave loading function modulated by the Hamming window is as shown in formula (1):

[0073] (1)

[0074] in, is the amplitude of the modulated sinusoidal electromagnetic ultrasonic wave, t is the time, f is the excitation frequency, is the number of pulses.

[0075] In the embodiment of the present invention, combined with Figure 2 Through the electromagnetic ultrasonic generating device, a sinusoidal electromagnetic ultrasonic wave modulated by a Hamming window is excited at a first position of the pipeline to be detected. After the sinusoidal electromagnetic ultrasonic wave propagates in the pipeline to be detected, an echo signal and a modal guided wave signal generated by the sinusoidal electromagnetic ultrasonic wave reflected by the pipeline defect in the pipeline to be detected can be received at a second position of the pipeline to be detected.

[0076] The embodiment of the present invention excites a Hamming window modulated sinusoidal electromagnetic ultrasonic wave in the pipeline to be inspected. When the electromagnetic ultrasonic wave propagates in the pipeline to be inspected, the generated modal guided waves and echoes have less signal reflection and attenuation in the pipeline, and the signal-to-noise ratio is high, which can achieve more precise defect detection.

[0077] As a possible implementation mode of the present invention, in this implementation mode, Figure 4 As shown, the axial length of the defect in the pipeline to be detected along the pipeline to be detected is calculated based on the echo signal, including:

[0078] S401, determining a time difference between a first end and a second end of a pipeline defect to be detected reflecting an electromagnetic ultrasonic wave based on an echo signal;

[0079] S402, calculating the axial length of the defect in the pipeline to be detected along the pipeline to be detected based on the propagation speed and time difference of the electromagnetic ultrasonic wave in the pipeline to be detected.

[0080] In the embodiment of the present invention, the axial length of the pipeline defect to be detected along the pipeline to be detected refers to the continuous length of the pipeline defect portion to be detected along the axial direction of the pipeline to be detected in the pipeline to be detected, and the first end and the second end of the pipeline defect to be detected respectively represent the starting position and the ending position of the pipeline defect to be detected. When the electromagnetic ultrasonic wave propagates in the pipeline to be detected, the starting end of the pipeline defect to be detected first reflects the electromagnetic ultrasonic wave, and the ending end reflects the electromagnetic ultrasonic wave later. The time difference between the starting end and the ending end reflecting the electromagnetic ultrasonic wave can be read in the waveform diagram of the echo signal. For the convenience of explanation, a specific embodiment is taken as an example, Figure 5 As shown in the figure, the echo images of the electromagnetic ultrasonic waves reflected by pipeline defects of different axial lengths, where the starting position of each pipeline defect is the same and the axial length is different. Figure 5 From the waveforms with axial lengths of 10 mm and 20 mm, we can see that the front face echo and the rear face echo overlap, and the time difference is small. Figure 5 The waveform diagram of the axial length of 30mm to 90mm shows that there is an obvious time difference between the front face echo and the rear face echo. The waveform diagram can be used to obtain the time difference between the first end and the second end of the pipeline defect to be detected reflecting the electromagnetic ultrasonic wave. , and then use formula (2) to calculate the axial length of the defect along the pipeline to be inspected: l :

[0081] (2)

[0082] Wherein, v is the propagation velocity of ultrasonic wave in the pipeline to be inspected.

[0083] The embodiment of the present invention can accurately calculate the axial length of the pipeline defect to be detected along the pipeline by using the reflection time difference of the front and rear ends of the pipeline defect to be detected in the pipeline to be detected, combined with the propagation speed of the electromagnetic ultrasonic wave in the pipeline.

[0084] As a possible implementation mode of the present invention, in this implementation mode, Figure 6 As shown, the radial depth of the pipeline defect to be detected along the pipeline to be detected is calculated based on the modal guided wave signal, including:

[0085] S601, determining a first amplitude of a modal guided wave signal;

[0086] S602: Based on the pre-fitted amplitude-radial depth relationship curve and in combination with the first amplitude, the radial depth of the defect in the pipeline to be inspected along the pipeline to be inspected is calculated.

[0087] In the embodiment of the present invention, the first amplitude of the modal waveguide signal refers to the peak value of the modal waveguide signal, such as Figure 7 The amplitudes of the modal guided waves generated by pipeline defects at different radial depths are different. Among them, the amplitudes of the modal guided waves with radial depths of 0.1mm and 0.3mm are very small and cannot be detected by the naked eye. The amplitude of the modal guided waves with a radial depth of 1.5mm is very obvious. The amplitude-radial depth relationship curve is approximately proportional.

[0088] To more conveniently describe the embodiments of the present invention, the fitting of the amplitude-radial depth relationship curve is first explained. Figure 8 As shown, the fitting of the amplitude-radial depth relationship curve includes:

[0089] S801, obtaining first amplitudes of multiple modal guided wave signals generated by electromagnetic ultrasonic waves reflected by pipeline defects of multiple known radial depths;

[0090] S802, fitting an amplitude-radial depth relationship curve based on a plurality of known radial depths and a first amplitude of a plurality of modal waveguide signals.

[0091] In the embodiment of the present invention, the amplitude-radial depth relationship curve can be determined by an experimental method of controlling variables. Specifically, multiple pipeline defects with the same axial length and circumferential width and different radial depths are set, the amplitudes of the modal guided waves generated after the electromagnetic ultrasonic waves are reflected by the multiple pipeline defects are collected, and the amplitude-radial depth relationship curve is constructed, such as Fig. 9 As shown, it is an amplitude-radial depth relationship curve. By fitting the curve, the functional relationship expression between the amplitude and the radial depth can be obtained.

[0092] Continuing from the previous embodiment, the functional relationship expression obtained in this embodiment is used and substituted into the first amplitude of the modal guided wave signal to calculate the radial depth of the pipeline defect to be detected in the pipeline to be detected along the pipeline to be detected.

[0093] The embodiment of the present invention can accurately calculate the radial depth of the pipeline defect to be detected by pre-acquiring an amplitude-radial depth relationship curve and based on the first amplitude of the acquired modal guided wave signal.

[0094] As a possible implementation mode of the present invention, in this implementation mode, Fig.10 As shown, the circumferential width of the defect in the pipeline to be detected along the pipeline to be detected is calculated based on the echo signal and the radial depth, including:

[0095] S1001, determining a second amplitude of the echo signal;

[0096] S1002, based on the pre-fitted amplitude-circumferential width relationship curve at different radial depths, the circumferential width of the defect in the pipeline to be inspected along the pipeline to be inspected is calculated in combination with the second amplitude.

[0097] Similar to the above-mentioned embodiment of calculating the radial depth of the pipeline defect to be detected along the pipeline to be detected, the embodiment of the present invention can calculate the circumferential width of the pipeline defect to be detected along the pipeline to be detected by combining the second amplitude of the echo signal with the amplitude-circumferential width relationship curve at different radial depths.

[0098] In the embodiment of the present invention, the second amplitude of the echo signal refers to the peak value of the echo signal, and the circumferential width is generally expressed by the angular percentage of the pipeline circumference, such as Fig.11 As shown in the figure, the amplitudes of echoes generated by pipeline defects with different circumferential widths are different. Among them, the amplitudes of echoes with circumferential widths of 10% and 20% are smaller, and the amplitude of echoes with a circumferential width of 100% is obvious. The amplitude-echo relationship curve is approximately proportional.

[0099] Similarly, for the convenience of describing the embodiments of the present invention, the fitting of the amplitude-circumferential width relationship curve at different radial depths is first explained, such as Fig.12 As shown, the fitting of the amplitude-circumferential width relationship curve includes:

[0100] S1201, obtaining second amplitudes of multiple echo signals generated by electromagnetic ultrasonic waves reflected by multiple pipeline defects with known circumferential widths at different radial depths;

[0101] S1202, fitting an amplitude-circumferential width relationship curve at different radial depths based on a plurality of known circumferential widths and a second amplitude of a plurality of echo signals.

[0102] In the embodiment of the present invention, the amplitude-radial depth relationship curve can be determined by an experimental method of controlling variables. Generally, the amplitude of the echo is related to both the radial depth and the circumferential width of the defect. The axial lengths of the pipeline defects can be set to be the same. By changing the radial depth and circumferential width of the pipeline defects, the amplitude of the echo is collected, and then the relationship curve between the amplitude and the circumferential width at different radial depths is established, such as Fig.13 As shown, it is an amplitude-circumferential width relationship curve. By fitting the curve, the functional relationship expression of the amplitude and the radial depth can be obtained. Optionally, the functional relationship expression can be a linear function.

[0103] Continuing from the previous embodiment, the functional relationship expression obtained in this embodiment is used and substituted into the second amplitude of the echo to calculate the pipeline defect to be detected in the pipeline to be detected along the circumferential direction of the pipeline to be detected.

[0104] The embodiment of the present invention can accurately calculate the circumferential width of the pipeline defect to be detected by pre-acquiring the amplitude-circumferential width relationship curve at different radial depths and based on the second amplitude of the acquired echo.

[0105] In order to better implement the pipeline defect quantitative detection method in the embodiment of the present invention, based on the pipeline defect quantitative detection method, correspondingly, Fig.14 As shown, the embodiment of the present invention further provides a pipeline defect detection device, and the pipeline defect detection device 1400 includes:

[0106] The signal acquisition module 1401 is used to receive the echo signal and the modal guided wave signal after the electromagnetic ultrasonic wave is reflected by the pipeline defect to be detected in the pipeline to be detected;

[0107] An axial length calculation module 1402 is used to calculate the axial length of the pipeline defect to be detected along the pipeline to be detected based on the echo signal;

[0108] A radial depth calculation module 1403 is used to calculate the radial depth of the pipeline defect to be detected along the pipeline to be detected based on the modal guided wave signal;

[0109] The circumferential width calculation module 1404 is used to calculate the circumferential width of the pipeline defect to be detected along the pipeline to be detected based on the echo signal and the radial depth.

[0110] The pipeline defect detection device 1400 provided in the above embodiment can implement the technical solution described in the above pipeline defect quantitative detection method embodiment. The specific implementation principles of the above modules or units can refer to the corresponding contents in the above pipeline defect quantitative detection method embodiment, which will not be repeated here.

[0111] The pipeline defect detection device provided by the present invention obtains the modal waveguide signal and echo signal generated by the pipeline defect reflecting the electromagnetic ultrasonic wave based on the propagation characteristics of the electromagnetic ultrasonic wave in the pipeline, analyzes the modal waveguide signal and the echo signal, and can accurately identify the position and shape of the wear defect. Compared with traditional ultrasonic detection, the modal waveguide and echo have less signal reflection and attenuation in the pipeline, and the signal-to-noise ratio is high, so that more precise defect detection can be achieved, and the axial length, circumferential width and radial depth of the pipeline defect can be quantitatively calculated, providing accurate data support for pipeline maintenance and servicing.

[0112] like Fig.15 As shown, the present invention also provides an electronic device 1500. The electronic device 1500 includes a processor 1501, a memory 1502 and a display 1503. Fig.15 Only some components of the electronic device 1500 are shown, but it should be understood that it is not required to implement all of the components shown, and more or fewer components may be implemented instead.

[0113] In some embodiments, the processor 1501 may be a central processing unit (CPU), a microprocessor or other data processing chip, which is used to run the program code or process data stored in the memory 1502, such as the pipeline defect quantitative detection method of the present invention.

[0114] In some embodiments, processor 1501 may be a single server or a server group. The server group may be centralized or distributed. In some embodiments, processor 1501 may be local or remote. In some embodiments, processor 1501 may be implemented in a cloud platform. In one embodiment, the cloud platform may include a private cloud, a public cloud, a hybrid cloud, a community cloud, a distributed cloud, an internal cloud, a multi-cloud, etc., or any combination thereof.

[0115] In some embodiments, the memory 1502 may be an internal storage unit of the electronic device 1500, such as a hard disk or memory of the electronic device 1500. In other embodiments, the memory 1502 may also be an external storage device of the electronic device 1500, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc., equipped on the electronic device 1500.

[0116] Furthermore, the memory 1502 may include both an internal storage unit of the electronic device 1500 and an external storage device. The memory 1502 is used to store application software installed in the electronic device 1500 and various data.

[0117] In some embodiments, the display 1503 may be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, an OLED (Organic Light-Emitting Diode) touch device, etc. The display 1503 is used to display information of the electronic device 1500 and to display a visual user interface. The components 1501-1503 of the electronic device 1500 communicate with each other via a system bus.

[0118] In one embodiment, when the processor 1501 executes the pipeline defect detection program in the memory 1502, the following steps may be implemented:

[0119] Receiving the echo signal and the modal guided wave signal after the electromagnetic ultrasonic wave is reflected by the pipeline defect to be inspected in the pipeline to be inspected;

[0120] Calculate the axial length of the defect in the pipeline to be detected along the pipeline to be detected based on the echo signal;

[0121] Calculating the radial depth of the defect in the pipeline to be inspected along the pipeline to be inspected based on the modal guided wave signal;

[0122] The circumferential width of the defect in the pipeline to be inspected along the pipeline to be inspected is calculated based on the echo signal and the radial depth.

[0123] It should be understood that: when the processor 1501 executes the pipeline defect detection program in the memory 1502, in addition to the above functions, other functions can also be implemented. For details, please refer to the description of the corresponding method embodiment above.

[0124] Furthermore, the embodiment of the present invention does not specifically limit the type of the electronic device 1500 mentioned, and the electronic device 1500 may be a portable electronic device such as a mobile phone, a tablet computer, a personal digital assistant (PDA), a wearable device, a laptop computer, etc. Exemplary embodiments of portable electronic devices include but are not limited to portable electronic devices equipped with IOS, Android, Microsoft or other operating systems. The above-mentioned portable electronic devices may also be other portable electronic devices, such as a laptop computer with a touch-sensitive surface (e.g., a touch panel). It should also be understood that in some other embodiments of the present invention, the electronic device 1500 may not be a portable electronic device, but a desktop computer with a touch-sensitive surface (e.g., a touch panel).

[0125] Accordingly, an embodiment of the present invention further provides a computer-readable storage medium, which is used to store computer-readable programs or instructions. When the program or instructions are executed by a processor, the steps or functions of the pipeline defect quantitative detection method provided in the above-mentioned method embodiments can be implemented.

[0126] Those skilled in the art will appreciate that all or part of the processes of the above-mentioned embodiments can be implemented by instructing related hardware (such as a processor, a controller, etc.) through a computer program, and the computer program can be stored in a computer-readable storage medium, wherein the computer-readable storage medium is a disk, an optical disk, a read-only storage memory, or a random access memory, etc.

[0127] The pipeline defect quantitative detection method, device, electronic device and storage medium provided by the present invention are introduced in detail above. The principle and implementation mode of the present invention are explained in this article by using specific examples. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation mode and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A pipeline defect quantitative detection method, characterized in that: include: Receiving the echo signal and the modal guided wave signal after the electromagnetic ultrasonic wave is reflected by the pipeline defect to be inspected in the pipeline to be inspected; Calculate the axial length of the pipeline defect to be detected along the pipeline to be detected based on the echo signal; Calculating the radial depth of the pipeline defect to be inspected along the pipeline to be inspected based on the modal guided wave signal; Calculate the circumferential width of the pipeline defect to be detected along the pipeline to be detected based on the echo signal and the radial depth; The receiving of the echo signal and the modal waveguide signal after the electromagnetic ultrasonic wave is reflected by the pipeline defect to be detected in the pipeline to be detected includes: Exciting a sinusoidal electromagnetic ultrasonic wave modulated by a Hamming window at a first position of the pipeline to be inspected; Receiving, at a second position of the pipeline to be inspected, an echo signal and a modal guided wave signal generated after the sinusoidal electromagnetic ultrasonic wave is reflected by a pipeline defect in the pipeline to be inspected; The sinusoidal electromagnetic ultrasonic loading function modulated by the Hamming window is: in, is the amplitude of the modulated sinusoidal electromagnetic ultrasonic wave, t is the time, f is the excitation frequency, is the number of pulses; The calculating the radial depth of the defect in the pipeline to be detected along the pipeline to be detected based on the modal guided wave signal comprises: determining a first amplitude of the modal guided wave signal; Based on a pre-fitted amplitude-radial depth relationship curve, the radial depth of the defect in the pipeline to be inspected along the pipeline to be inspected is calculated in combination with the first amplitude; The calculating the circumferential width of the defect in the pipeline to be detected along the pipeline to be detected based on the echo signal and the radial depth includes: determining a second amplitude of the echo signal; Based on the pre-fitted amplitude-circumferential width relationship curve at different radial depths, the circumferential width of the defect in the pipeline to be inspected along the pipeline to be inspected is calculated in combination with the second amplitude.

2. The pipeline defect quantitative detection method according to claim 1, characterized in that: The step of calculating the axial length of the defect in the pipeline to be detected along the pipeline to be detected based on the echo signal comprises: Determine, based on the echo signal, a time difference between a first end and a second end of the pipeline defect to be detected reflecting the electromagnetic ultrasonic wave; The axial length of the defect in the pipeline to be detected along the pipeline to be detected is calculated based on the propagation speed of the electromagnetic ultrasonic wave in the pipeline to be detected and the time difference.

3. The pipeline defect quantitative detection method according to claim 1, characterized in that: The fitting of the amplitude-radial depth relationship curve includes: Acquire first amplitudes of modal guided wave signals respectively generated by reflections of the electromagnetic ultrasonic waves by pipeline defects of multiple known radial depths to obtain multiple first amplitudes; An amplitude-radial depth relationship curve is fitted based on the plurality of known radial depths and the plurality of first amplitudes.

4. The pipeline defect quantitative detection method according to claim 1, characterized in that: The fitting of the amplitude-circumferential width relationship curve includes: Acquire second amplitudes of echo signals respectively generated by reflection of the electromagnetic ultrasonic waves by a plurality of pipeline defects with known circumferential widths at different radial depths to obtain a plurality of second amplitudes; A curve of amplitude-circumferential width relationship at different radial depths is fitted based on the multiple known circumferential widths and the multiple second amplitudes.

5. A pipeline defect detection device, characterized in that: include: A signal acquisition module, used for receiving an echo signal and a modal waveguide signal after the electromagnetic ultrasonic wave is reflected by a pipeline defect to be inspected in the pipeline to be inspected; An axial length calculation module, used to calculate the axial length of the pipeline defect to be detected along the pipeline to be detected based on the echo signal; A radial depth calculation module, used for calculating the radial depth of the pipeline defect to be detected along the pipeline to be detected based on the modal guided wave signal; A circumferential width calculation module, used to calculate the circumferential width of the pipeline defect to be detected along the pipeline to be detected based on the echo signal and the radial depth; The receiving of the echo signal and the modal waveguide signal after the electromagnetic ultrasonic wave is reflected by the pipeline defect to be detected in the pipeline to be detected includes: Exciting a sinusoidal electromagnetic ultrasonic wave modulated by a Hamming window at a first position of the pipeline to be inspected; Receiving, at a second position of the pipeline to be inspected, an echo signal and a modal guided wave signal generated after the sinusoidal electromagnetic ultrasonic wave is reflected by a pipeline defect in the pipeline to be inspected; The sinusoidal electromagnetic ultrasonic loading function modulated by the Hamming window is: in, is the amplitude of the modulated sinusoidal electromagnetic ultrasonic wave, t is the time, f is the excitation frequency, is the number of pulses; The calculating the radial depth of the defect in the pipeline to be detected along the pipeline to be detected based on the modal guided wave signal comprises: determining a first amplitude of the modal guided wave signal; Based on a pre-fitted amplitude-radial depth relationship curve, the radial depth of the defect in the pipeline to be inspected along the pipeline to be inspected is calculated in combination with the first amplitude; The calculating the circumferential width of the defect in the pipeline to be detected along the pipeline to be detected based on the echo signal and the radial depth includes: determining a second amplitude of the echo signal; Based on the pre-fitted amplitude-circumferential width relationship curve at different radial depths, the circumferential width of the defect in the pipeline to be inspected along the pipeline to be inspected is calculated in combination with the second amplitude.

6. An electronic device, characterized in that: comprising a memory and a processor, wherein: The memory is used to store programs; The processor is coupled to the memory and is used to execute the program stored in the memory to implement the steps in the pipeline defect quantitative detection method according to any one of claims 1 to 4 above.

7. A computer-readable storage medium, characterized in that: Used to store computer-readable programs or instructions, which, when executed by a processor, can implement the steps of the pipeline defect quantitative detection method described in any one of claims 1 to 4 above.

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