Ultrasonic creeping wave probe front edge and delay detection method, system, equipment and medium

Abstract

The present invention relates to the field of ultrasonic creeping wave detection technology, and in particular to a method, system, equipment and medium for detecting the front and delay of an ultrasonic creeping wave probe, including: driving the creeping wave probe to move to the highest reflected wave height of two transverse through holes of a special comparison test block respectively, measuring the horizontal distance between the front end of the creeping wave probe and the two transverse through holes to obtain the front of the creeping wave probe; driving the creeping wave probe to move to a position where the horizontal distance from the wire cutting groove is the first cutting distance, adjusting the gain of the ultrasonic flaw detector and the delay value of the ultrasonic flaw detector to obtain the delay value of the creeping wave probe; performing creeping wave detection according to the front and delay values ​​of the creeping wave probe to determine the defect location. The present invention uses a special comparison test block to complete creeping wave detection, which solves the problem that the existing creeping wave detection method can not only rely on the manufacturing process of the manufacturer to ensure the performance of the creeping wave probe, but also cannot achieve accurate, fast and efficient identification and positioning of defects, and has the advantages of convenient operation and high detection efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of ultrasonic creeping wave detection, and in particular to a method, system, equipment and medium for detecting the leading edge and delay of an ultrasonic creeping wave probe. Background Art

[0002] Most of the metal monitoring components in thermal power plants are temperature- and pressure-bearing components. If they have defects such as structural and performance discontinuities, stress concentration will occur, which will cause the defects to expand under long-term service at high temperature and high pressure, and may even cause leakage, resulting in unplanned shutdowns. More seriously, it may lead to major accidents with machine destruction and loss of life. Therefore, stress concentration caused by surface and near-surface defects is one of the most harmful defects. Therefore, it is particularly important to detect it accurately, effectively and quickly.

[0003] For the detection of surface and near-surface crack defects in thermal power plant equipment, magnetic powder, penetration, surface wave or eddy current testing is currently mostly used. The surface roughness of the inspected workpiece is relatively high, and the inspected part is generally required to be exposed so that the inspected part is visible to the naked eye of the inspector. However, if there is a sudden change in the structure, a rough surface, or droplets or dirt on the surface, there is a possibility of missed detection and misjudgment.

[0004] Creeping wave is a wave that propagates below the surface of the workpiece and is less affected by structural mutations, surface roughness, droplets, dirt, etc. of the workpiece. Therefore, creeping wave is suitable for the detection of surface and near-surface defects under rough surfaces. At present, this method is widely used in the detection of turbine blades in thermal power plants, dissimilar steel welds, small-diameter pipe welds and parent materials, bolt thread root crack defects, support porcelain insulator surface defects, as well as castings, cladding layers, etc. Surface and near-surface defects, however, the existing creeping wave detection method can not only rely on the manufacturer's manufacturing process to ensure the performance of the creeping wave probe, but also lacks the front and delayed tests and methods of the creeping wave probe, and cannot achieve accurate, fast and efficient identification and positioning of defects. Summary of the invention

[0005] The present invention provides a method, system, equipment and medium for detecting the leading edge and delay of an ultrasonic creeping wave probe, and solves the technical problem that the existing creeping wave detection method can not only rely on the manufacturing process of the manufacturer to ensure the performance of the creeping wave probe, but also cannot achieve accurate, rapid and efficient identification and positioning of defects.

[0006] In order to solve the above technical problems, the present invention provides a method, system, equipment and medium for detecting the leading edge and delay of an ultrasonic creeping wave probe.

[0007] In a first aspect, the present invention provides a method for detecting the leading edge and delay of an ultrasonic creeping wave probe, which is applied to a special comparison test block, wherein the special comparison test block comprises two wire-cut grooves respectively arranged on the upper and lower surfaces of the special comparison test block, and a first transverse through hole and a second transverse through hole spaced from top to bottom in a vertical direction and having different depths, wherein the method comprises the following steps:

[0008] Placing a creeping wave probe on the special comparison test block, driving the creeping wave probe to move to the highest reflected wave height of the first transverse through hole, adjusting it to 80% of the reference wave height, and measuring a first horizontal distance from the front end of the creeping wave probe to the first transverse through hole;

[0009] The creeping wave probe is driven to move to the highest reflected wave height of the second transverse through hole, adjusted to 80% of the reference wave height, and the second horizontal distance from the front end of the creeping wave probe to the second transverse through hole is measured;

[0010] Obtaining a front edge of a creeping wave probe according to the first horizontal distance and the second horizontal distance;

[0011] Input the front edge of the creeping wave probe into the ultrasonic flaw detector, and place the creeping wave probe on the special comparison test block, drive the creeping wave probe to move to a position where the horizontal distance from the wire cutting groove is the first cutting distance, adjust the gain of the ultrasonic flaw detector, make the creeping wave reflection signal of the creeping wave probe in the wire cutting groove reach 80% of the reference wave height, and adjust the delay value of the ultrasonic flaw detector, make the creeping wave reflection signal level value displayed by the ultrasonic flaw detector be the preset value of the reflection signal level, and obtain the creeping wave probe delay value;

[0012] Creeping wave detection is performed according to the front edge of the creeping wave probe and the delay value of the creeping wave probe to determine the defect location.

[0013] In a further embodiment, the special comparison test block includes a special comparison test block having a length of 200 mm, a width of 20 mm, and a height of 60 mm;

[0014] The first transverse through hole and the second transverse through hole are both 60 mm away from the leftmost edge of the special comparison test block;

[0015] The first transverse through hole is 20 mm away from the upper surface of the special comparison test block;

[0016] The second transverse through hole is 40 mm away from the upper surface of the special comparison test block.

[0017] In a further embodiment, the depth of the two wire cutting grooves is 3 mm and the width is 0.5 mm;

[0018] The two wire-cut grooves are both 60 mm away from the rightmost edge of the special comparison test block, and the horizontal distances between the two wire-cut grooves and the center of the first transverse through hole and the center of the second transverse through hole are both 80 mm.

[0019] The step of obtaining the front edge of the creeping wave probe according to the first horizontal distance and the second horizontal distance comprises:

[0020] Inputting the first horizontal distance and the second horizontal distance into a pre-constructed creeping wave refraction angle model to obtain a shear wave refraction angle value;

[0021] The front edge of the creeping wave probe is obtained according to the shear wave refraction angle value and the pre-constructed first transverse through hole refraction model or the second transverse through hole refraction model.

[0022] In a further embodiment, the creeping wave refraction angle model is specifically:

[0023]

[0024] In the formula, Indicates the shear wave refraction angle value; L 1 Indicates the first horizontal distance from the front end of the creeping wave probe to the first transverse through hole; L 2 Indicates the second horizontal distance from the front end of the creeping wave probe to the second transverse through hole; H 1 Indicates the distance between the first transverse through hole and the upper surface of the special comparison test block; H 2 Indicates the distance between the second transverse through hole and the upper surface of the special comparison test block.

[0025] In a further embodiment, the first transverse through hole refraction model is specifically:

[0026]

[0027] In the formula, H 1 Indicates the distance between the first transverse through hole and the upper surface of the special comparison test block; Indicates the shear wave refraction angle value; L 1 Indicates the first horizontal distance from the front end of the creeping wave probe to the first transverse through hole; L 0 Indicates the leading edge of the creeping wave probe;

[0028] The second transverse through hole refraction model is specifically:

[0029]

[0030] In the formula, H 2 Indicates the distance between the first transverse through hole and the upper surface of the special comparison test block; Indicates the shear wave refraction angle value; L 2 Indicates the first horizontal distance from the front end of the creeping wave probe to the first transverse through hole; L 0 Indicates the leading edge of the creeping wave probe.

[0031] In a further embodiment, the first cutting distance is 40 mm;

[0032] The preset value of the reflection signal level is 40 mm.

[0033] In a second aspect, the present invention provides an ultrasonic creeping wave probe front and delay detection system, which is applied to a special comparison test block, wherein the special comparison test block includes two wire cutting grooves respectively arranged on the upper and lower surfaces of the special comparison test block, and a first transverse through hole and a second transverse through hole spaced from top to bottom in the vertical direction and having the same diameter, wherein the system includes:

[0034] A first scanning module is used to place a creeping wave probe on the special comparison test block, drive the creeping wave probe to move to the highest reflected wave height of the first transverse through hole, adjust it to 80% of the reference wave height, and measure a first horizontal distance from the front end of the creeping wave probe to the first transverse through hole;

[0035] The second scanning module is used to drive the creeping wave probe to move to the highest reflected wave height of the second transverse through hole, adjust it to 80% of the reference wave height, and measure the second horizontal distance from the front end of the creeping wave probe to the second transverse through hole;

[0036] A front acquisition module, used for obtaining the front of the creeping wave probe according to the first horizontal distance and the second horizontal distance;

[0037] The delay test module is used to input the front edge of the creeping wave probe into the ultrasonic flaw detector, and place the creeping wave probe on the special comparison test block, drive the creeping wave probe to move to a position where the horizontal distance from the wire cutting groove is the first cutting distance, adjust the gain of the ultrasonic flaw detector, make the creeping wave reflection signal of the creeping wave probe in the wire cutting groove reach 80% of the reference wave height, and adjust the delay value of the ultrasonic flaw detector, make the creeping wave reflection signal level value displayed by the ultrasonic flaw detector be the preset value of the reflection signal level, and obtain the creeping wave probe delay value;

[0038] The defect positioning module is used to perform creeping wave detection according to the front edge of the creeping wave probe and the delay value of the creeping wave probe to determine the defect position.

[0039] In a third aspect, the present invention further provides a computer device, comprising a processor and a memory, wherein the processor is connected to the memory, the memory is used to store a computer program, and the processor is used to execute the computer program stored in the memory so that the computer device performs the steps of implementing the above method.

[0040] In a fourth aspect, the present invention further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and the computer program implements the steps of the above method when executed by a processor.

[0041] The present invention provides a method, system, device and medium for detecting the leading edge and delay of an ultrasonic creeping wave probe. The method uses a special comparison test block for creeping wave probe performance testing with a transverse through hole and a wire cutting groove, and uses the shear wave signal generated by the creeping wave probe to scan the two transverse through holes, thereby determining the accurate value of the probe leading edge and delay of the creeping wave probe. Compared with the prior art, the method realizes creeping wave detection by testing the leading edge and delay of the creeping wave probe, which can realize more accurate, faster and more efficient identification and positioning of defects, improves the use performance of the creeping wave probe, has the advantages of convenient operation, easy to master, low cost, etc., and has good social and economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a schematic flow chart of a method for detecting the leading edge and delay of an ultrasonic creeping wave probe provided in an embodiment of the present invention;

[0043] Figure 2 Schematic diagram of the acoustic field of creeping carbon steel and low alloy steel provided in an embodiment of the present invention;

[0044] Figure 3 is a side view schematic diagram of a special comparison test block provided by an embodiment of the present invention;

[0045] Figure 4 It is a schematic diagram of a shear wave signal emitted by a creeping wave probe provided in an embodiment of the present invention scanning a first transverse through hole;

[0046] Figure 5 It is a schematic diagram of scanning a second transverse through hole using a shear wave signal emitted by a creeping wave probe provided in an embodiment of the present invention;

[0047] Figure 6 Schematic diagram of the distance from the front end of the creeping wave probe to the wire cutting groove provided by an embodiment of the present invention;

[0048] Figure 7 It is a block diagram of the ultrasonic creeping wave probe front edge and delay detection system provided by an embodiment of the present invention;

[0049] Figure 8 It is a schematic diagram of the structure of a computer device provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0050] The following specifically illustrates the implementation mode of the present invention in conjunction with the accompanying drawings. The embodiments are provided for illustrative purposes only and cannot be understood as limiting the present invention. The accompanying drawings are provided for reference and illustration only and do not constitute a limitation on the scope of patent protection of the present invention, because many changes can be made to the present invention without departing from the spirit and scope of the present invention.

[0051] refer to Figure 1The embodiment of the present invention provides a method for detecting the front edge and delay of an ultrasonic creeping wave probe, which is applied to a special comparison test block, wherein the special comparison test block includes two wire-cut grooves respectively arranged on the upper and lower surfaces of the special comparison test block, and a first transverse through hole and a second transverse through hole which are arranged at intervals from top to bottom in the vertical direction and have different depths, such as Figure 1 As shown, the method comprises the following steps:

[0052] S1. Place the creeping wave probe on the special comparison test block, drive the creeping wave probe to move to the highest reflected wave height of the first transverse through hole, adjust it to 80% of the reference wave height, and measure the first horizontal distance from the front end of the creeping wave probe to the first transverse through hole.

[0053] For ease of understanding, this embodiment describes the following working principles:

[0054] According to the propagation characteristics of ultrasound, when ultrasound propagates from one medium to another medium interface, it will be reflected and refracted in the second medium. When it is obliquely incident, it will be accompanied by a wave type change. According to Snell's law:

[0055]

[0056] C L1 <C S2 <C L2

[0057] In the formula, C L1 represents the longitudinal wave speed of ultrasonic wave in the first medium; C S2 represents the longitudinal wave speed of ultrasound in the second medium; C L2 Represents the transverse wave speed of ultrasound in the second medium; α L represents the incident angle of the ultrasonic longitudinal wave in the first medium; β L represents the refraction angle of ultrasonic longitudinal wave in the second medium; β S It represents the longitudinal refraction angle of ultrasonic shear wave in the second medium.

[0058] When an ultrasonic longitudinal wave is incident from a medium with a low sound velocity to a medium with a high sound velocity, the refraction angle increases with the increase of the incident angle. When the incident angle α=arcsinC1 / C2, in the second medium, when the refraction angle βL of the longitudinal wave is equal to 90°, the longitudinal wave excited in the second medium propagates under the surface. The wave front with the most concentrated energy after the longitudinal wave and the transverse wave are superimposed is called a creeping wave.

[0059] The sound velocity of longitudinal waves in carbon steel and low alloy steel is 5920m / s, the sound velocity in plexiglass is 2730m / s (because plexiglass has good sound transmission performance, ultrasonic probe wedges are generally made of plexiglass), and the sound beam of shear waves in carbon steel and low alloy steel is 3230m / s. Figure 2This is a schematic diagram of the acoustic field of creeping waves in carbon steel and low alloy steel. If creeping waves are generated in carbon steel and low alloy steel parts, the incident angle of the longitudinal wave in the organic glass wedge is selected as α = arcsinC 1 / C 2 =arcsin2730 / 5920=≈27.5°, then a creeping wave with a refraction angle of 90°, that is, parallel to the workpiece surface, will be generated in the carbon steel and low alloy steel workpieces. At the same time, according to Snell's law, a transverse wave with a refraction angle θ of arcsin(sin27.5° / 2730×3230)≈33° will also be generated.

[0060] Depend on Figure 2 It can be seen that the acoustic field excited by the creeping wave probe in carbon steel and low alloy steel has the characteristics of multiple waveforms. While generating creeping waves, there are also strong shear waves and head waves. The shear wave propagates in the workpiece at a refraction angle of about 33°. Ultrasonic creeping waves are a compression wave that propagates near the surface of the material. They are sensitive to surface and near-surface defects. Since the longitudinal wave is the main component, the creeping wave detection is less affected by the sudden change of the workpiece structure, surface roughness, droplets, dirt, etc. Therefore, creeping wave detection has been applied in the detection of equipment in many thermal power plants. However, there is no relevant information and standards on the measurement, calculation or other acquisition methods of the leading edge and delay of the creeping wave probe. Whether the performance parameters of the creeping wave probe can meet the requirements can only be guaranteed by the manufacturing process of the probe manufacturer.

[0061] like Figure 3 As shown, in this embodiment, in combination with the acoustic field characteristics of the creeping wave probe, a special comparison test block (material 20G) for measuring the incident point (i.e., the front edge of the probe) and the delay value of the creeping wave probe is designed. The special comparison test block includes a special comparison test block 1 which is rectangular in shape and has a length of 200 mm, a width of 20 mm, and a height of 60 mm; the special comparison test block is provided with two transverse through holes which are through-through and vertically spaced from front to back, and the two transverse through holes are respectively a first transverse through hole 2 and a second transverse through hole 3, wherein the first transverse through hole 2 is 60 mm away from the leftmost edge of the special comparison test block and 20 mm away from the upper surface of the special comparison test block, the second transverse through hole 3 is 60 mm away from the leftmost edge of the special comparison test block and 40 mm away from the upper surface of the special comparison test block, the diameters of the two transverse through holes are both φ1 mm, and the distance between the centers of the two transverse through holes is 20 mm.

[0062] The special comparison test block is also distributed with two wire cutting grooves 4, wherein the depth of the two wire cutting grooves 4 is 3 mm, the width is 0.5 mm, the two wire cutting grooves 4 are 60 mm away from the rightmost edge of the special comparison test block, and the horizontal distance between the two wire cutting grooves 4 and the center of the first transverse through hole 2 and the center of the second transverse through hole 3 is 80 mm.

[0063] Specifically, Figure 4As shown, in this embodiment, the creeping wave probe is placed on the special comparison test block 1, and the creeping wave probe 5 is moved forward and backward to find the highest reflected wave of the shear wave signal emitted by the creeping wave probe at the position of the first transverse through hole with a depth of 20mm and a diameter of φ1mm, and the wave height is adjusted to 80% of the reference wave height. The horizontal distance from the front end of the creeping wave probe to the first transverse through hole is measured with a steel ruler. 1 , then the horizontal distance from the incident point of the creeping wave probe to the first transverse through hole is L 1 +L 0 , L 0 is the front edge of the creeping wave probe (i.e., the distance between the incident point of the ultrasonic signal emitted by the creeping wave probe and the front end of the creeping wave probe), from which the following first SDH refraction model can be obtained:

[0064]

[0065] In the formula, H 1 Indicates the distance between the first transverse through hole and the upper surface of the special comparison test block; Angle value; L 1 Indicates the first horizontal distance from the front end of the creeping wave probe to the first transverse through hole; L 0 Indicates the leading edge of the creeping wave probe.

[0066] S2. Drive the creeping wave probe to move to the highest reflected wave height of the second transverse through hole, adjust it to 80% of the reference wave height, and measure the second horizontal distance from the front end of the creeping wave probe to the second transverse through hole.

[0067] Specifically, Figure 5 As shown, the creeping wave probe 5 is moved forward and backward to find the highest reflected wave of the φ1mm transverse through hole with a depth H2=40mm scanned by the shear wave signal emitted by the creeping wave probe 5 to 80% of the reference wave height. The horizontal distance from the front end of the creeping wave probe to the φ1mm transverse through hole is measured with a steel ruler as L2. The horizontal distance from the incident point of the creeping wave probe to the φ1mm transverse through hole with a depth of 40mm is L2+L0. The following second transverse through hole refraction model can be obtained:

[0068]

[0069] In the formula, H 2 Indicates the distance between the first transverse through hole and the upper surface of the special comparison test block; Indicates the shear wave refraction angle value; L 2 Indicates the first horizontal distance from the front end of the creeping wave probe to the first transverse through hole; L 0 Indicates the leading edge of the creeping wave probe.

[0070] S3. Obtain the front edge of the creeping wave probe according to the first horizontal distance and the second horizontal distance.

[0071] In this embodiment, the step of obtaining the front edge of the creeping wave probe according to the first horizontal distance and the second horizontal distance includes:

[0072] Inputting the first horizontal distance and the second horizontal distance into a pre-constructed creeping wave refraction angle model to obtain a shear wave refraction angle value;

[0073] The front edge of the creeping wave probe is obtained according to the shear wave refraction angle value and the pre-constructed first transverse through hole refraction model or the second transverse through hole refraction model.

[0074] For ease of understanding, the following is a brief description of the construction process of the creeping wave refraction angle model:

[0075] Subtract the second transverse through hole refraction model from the first transverse through hole refraction model to obtain:

[0076]

[0077] By transforming the above formula, we can get:

[0078]

[0079] Thus, the creeping wave refraction angle model is obtained, which is:

[0080]

[0081] In the formula, Indicates the shear wave refraction angle value; L 1 Indicates the first horizontal distance from the front end of the creeping wave probe to the first transverse through hole; L 2 Indicates the second horizontal distance from the front end of the creeping wave probe to the second transverse through hole; H 1 Indicates the distance between the first transverse hole and the upper surface of the special comparison test block, H 1 =20mm; H 2 Indicates the distance between the second horizontal through hole and the upper surface of the special comparison test block, H 2 =40mm.

[0082] Specifically, in this embodiment, the measured first horizontal distance and second horizontal distance are substituted into the creeping wave refraction angle model to obtain the shear wave refraction angle value of the shear wave component in the test block: By inputting the shear wave refraction angle value into the first transverse through hole refraction model or the second transverse through hole refraction model, the creeping wave probe front L can be obtained. 0 .

[0083] S4. Input the leading edge of the creeping wave probe into the ultrasonic flaw detector, and place the creeping wave probe on the special comparison test block, drive the creeping wave probe to move to a position where the horizontal distance from the wire cutting groove is the first cutting distance, adjust the gain of the ultrasonic flaw detector, make the creeping wave reflection signal of the creeping wave probe in the wire cutting groove reach 80% of the reference wave height, and adjust the delay value of the ultrasonic flaw detector, make the creeping wave reflection signal level value displayed by the ultrasonic flaw detector equal to the preset value of the reflection signal level, and obtain the delay value of the creeping wave probe.

[0084] Specifically, in this embodiment, the front edge L of the creeping wave probe is obtained. 0 Then, directly input the creeping wave probe front edge L into the ultrasonic flaw detector. 0 ,like Figure 6 As shown in the figure, place the creeping wave probe on a special comparison test block, so that the distance from the front end of the creeping wave probe to the wire cutting groove is L 3 , where L 3 =40-L 0 , adjust the gain of the ultrasonic flaw detector so that the creeping wave reflection signal of the creeping wave probe in the wire cutting groove reaches 80% of the reference wave height, and adjust the delay value of the ultrasonic flaw detector so that the creeping wave reflection signal level value displayed by the ultrasonic flaw detector is 40mm. At this time, the delay value displayed on the ultrasonic flaw detector is the delay value of the creeping wave probe. It should be noted that, in this embodiment, the first cutting distance is set to 40mm after comprehensively considering the creeping wave reflection signal strength and accuracy.

[0085] S5. Perform creeping wave detection according to the front edge of the creeping wave probe and the delay value of the creeping wave probe to determine the defect location.

[0086] After obtaining the front edge and delay value of the creeping wave probe, this embodiment inputs the front edge and delay value of the creeping wave probe into the ultrasonic flaw detector. After adjusting the scanning sensitivity, the inspection can be carried out. During the inspection, the horizontal distance of the defect displayed in the ultrasonic flaw detector is the actual distance of the defect. During the inspection, the positioning of the reflected signal of the creeping wave at the defect is more accurate than before. If a 3mm deep crack defect needs to be detected, the special comparison test block designed in this embodiment can be directly used for adjustment. The method for determining the front edge and delay of the probe in this embodiment creates the prerequisite for accurate and rapid positioning of defects in ultrasonic creeping wave detection.

[0087] This embodiment provides a method for detecting the leading edge and delay of an ultrasonic creeping wave probe. When the method uses the special comparison test block with a transverse through hole and a wire-cut groove provided by the present invention to perform a creeping wave test, the shear wave signal generated by the creeping wave probe can be used to scan the two transverse through holes to obtain accurate creeping wave probe leading edge and creeping wave probe delay values, thereby improving the creeping wave probe's ability to accurately and quickly locate defects in creeping wave detection. Compared with the prior art, the embodiment of the present invention, combined with the special comparison test block, can conveniently, quickly, and accurately measure the ultrasonic creeping wave probe's incident point and delay, thereby improving measurement accuracy and convenience.

[0088] It should be noted that the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0089] In one embodiment, Figure 7 As shown, an embodiment of the present invention provides an ultrasonic creeping wave probe front and delay detection system, which is applied to a special comparison test block, wherein the special comparison test block includes two wire cutting grooves respectively arranged on the upper and lower surfaces of the special comparison test block, and a first transverse through hole and a second transverse through hole spaced from top to bottom in the vertical direction and having different depths, and the system includes:

[0090] The first scanning module 101 is used to place a creeping wave probe on the special comparison test block, drive the creeping wave probe to move to the highest reflected wave height of the first transverse through hole, adjust it to 80% of the reference wave height, and measure a first horizontal distance from the front end of the creeping wave probe to the first transverse through hole;

[0091] The second scanning module 102 is used to drive the creeping wave probe to move to the highest reflected wave height of the second transverse through hole, adjust it to 80% of the reference wave height, and measure the second horizontal distance from the front end of the creeping wave probe to the second transverse through hole;

[0092] A front acquisition module 103, configured to obtain a front of a creeping wave probe according to the first horizontal distance and the second horizontal distance;

[0093] The delay test module 104 is used to input the front edge of the creeping wave probe into the ultrasonic flaw detector, place the creeping wave probe on the special comparison test block, drive the creeping wave probe to move to a position where the horizontal distance from the wire cutting groove is the first cutting distance, adjust the gain of the ultrasonic flaw detector, make the creeping wave reflection signal of the creeping wave probe in the wire cutting groove reach 80% of the reference wave height, and adjust the delay value of the ultrasonic flaw detector, make the creeping wave reflection signal level value displayed by the ultrasonic flaw detector be the preset value of the reflection signal level, and obtain the creeping wave probe delay value;

[0094] The defect location module 105 is used to perform creeping wave detection according to the front edge of the creeping wave probe and the delay value of the creeping wave probe to determine the defect location.

[0095] For the specific definition of an ultrasonic creeping wave probe leading edge and delay detection system, please refer to the above-mentioned definition of an ultrasonic creeping wave probe leading edge and delay detection method, which will not be repeated here. A person of ordinary skill in the art can appreciate that the various modules and steps described in conjunction with the embodiments disclosed in this application can be implemented in hardware, software, or a combination of both. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0096] The embodiment of the present invention provides an ultrasonic creeping wave probe front and delay detection system, which scans the first transverse through hole through a first scanning module; scans the second transverse through hole through a second scanning module; obtains the front of the creeping wave probe through a front acquisition module; obtains the delay value of the creeping wave probe through a delay test module; and determines the defect position through a defect positioning module. Compared with the prior art, the present application combines the acoustic field characteristics of the creeping wave probe to design a special test block for measuring the incident point (i.e., the front of the probe) and the delay value of the creeping wave probe, thereby using a special comparison test block to measure the front and delay value of the creeping wave probe, simplifying the instrument adjustment parameter setting before creeping wave detection and the rapid and accurate positioning of defects during the detection process, thereby ensuring the accuracy of the detection results.

[0097] Figure 8 A computer device provided by an embodiment of the present invention includes a memory, a processor and a transceiver, which are connected via a bus; the memory is used to store a set of computer program instructions and data, and can transmit the stored data to the processor, and the processor can execute the program instructions stored in the memory to perform the steps of the above method.

[0098] The memory may include a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories; the processor may be a central processing unit, a microprocessor, an application-specific integrated circuit, a programmable logic device, or a combination thereof. By way of example but not limitation, the programmable logic device may be a complex programmable logic device, a field programmable gate array, a general purpose array logic, or any combination thereof.

[0099] Additionally, the memory may be a physically separate unit or may be integrated with the processor.

[0100] It can be understood by those skilled in the art that Figure 8The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have the same component arrangement.

[0101] In one embodiment, the present invention provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the steps of the above method are implemented.

[0102] An ultrasonic creeping wave probe front and delay detection method, system, equipment and medium are provided in an embodiment of the present invention. The ultrasonic creeping wave probe front and delay detection method utilizes the highest reflected wave of the shear wave signal emitted by the creeping wave probe at different positions of a special comparison test block to calculate the creeping wave probe front and delay values. The method is simple, highly reliable, can realize fast and accurate positioning of defects, and has promotion and application value.

[0103] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented by software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present invention is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from a website site, computer, server or data center to another website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line) or wireless (e.g., infrared, wireless, microwave, etc.) mode. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrated. The available medium can be a magnetic medium (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., an SSD), etc.

[0104] Those skilled in the art will appreciate that all or part of the processes in the above-mentioned embodiment methods can be implemented by instructing related hardware through a computer program. The computer program can be stored in a computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods.

[0105] The above-mentioned embodiments only express several preferred implementation modes of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in the technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be regarded as the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be based on the protection scope of the claims.

Claims

1. A method for detecting the front edge and delay of an ultrasonic creeping wave probe, It is characterized in that Applied to a special comparison test block, the special comparison test block comprises two wire cutting grooves respectively arranged on the upper and lower surfaces of the special comparison test block, and a first transverse through hole and a second transverse through hole spaced from top to bottom in the vertical direction and having different depths, the method comprises the following steps: Placing a creeping wave probe on the special comparison test block, driving the creeping wave probe to move to the highest reflected wave height of the first transverse through hole, adjusting it to 80% of the reference wave height, and measuring a first horizontal distance from the front end of the creeping wave probe to the first transverse through hole; The creeping wave probe is driven to move to the highest reflected wave height of the second transverse through hole, adjusted to 80% of the reference wave height, and the second horizontal distance from the front end of the creeping wave probe to the second transverse through hole is measured; Obtaining a front edge of a creeping wave probe according to the first horizontal distance and the second horizontal distance; Input the front edge of the creeping wave probe into the ultrasonic flaw detector, and place the creeping wave probe on the special comparison test block, drive the creeping wave probe to move to a position where the horizontal distance from the wire cutting groove is the first cutting distance, adjust the gain of the ultrasonic flaw detector, make the creeping wave reflection signal of the creeping wave probe in the wire cutting groove reach 80% of the reference wave height, and adjust the delay value of the ultrasonic flaw detector, so that the creeping wave reflection signal level value displayed by the ultrasonic flaw detector is the preset value of the reflection signal level, and the delay value displayed on the ultrasonic flaw detector is the delay value of the creeping wave probe; Perform creeping wave detection according to the front edge of the creeping wave probe and the delay value of the creeping wave probe to determine the defect location; Wherein, the step of obtaining the front edge of the creeping wave probe according to the first horizontal distance and the second horizontal distance comprises: The first horizontal distance and the second horizontal distance are input into a pre-constructed creeping wave refraction angle model to obtain a shear wave refraction angle value; the creeping wave probe front is obtained according to the shear wave refraction angle value and the pre-constructed first transverse through hole refraction model or the second transverse through hole refraction model, wherein the creeping wave refraction angle model is specifically: In the formula, Indicates the shear wave refraction angle value; L 1 Indicates the first horizontal distance from the front end of the creeping wave probe to the first transverse through hole; L 2 Indicates the second horizontal distance from the front end of the creeping wave probe to the second transverse through hole; H 1 Indicates the distance between the first transverse through hole and the upper surface of the special comparison test block; H 2 Indicates the distance between the second transverse through hole and the upper surface of the special comparison test block; The first transverse through hole refraction model is specifically: In the formula, H 1 Indicates the distance between the first transverse through hole and the upper surface of the special comparison test block; Indicates the shear wave refraction angle value; L 1 Indicates the first horizontal distance from the front end of the creeping wave probe to the first transverse through hole; L 0 Indicates the leading edge of the creeping wave probe; The second transverse through hole refraction model is specifically: In the formula, H 2 Indicates the distance between the first transverse through hole and the upper surface of the special comparison test block; Indicates the shear wave refraction angle value; L 2 Indicates the first horizontal distance from the front end of the creeping wave probe to the first transverse through hole; L 0 Indicates the leading edge of the creeping wave probe.

2. A method for detecting the leading edge and delay of an ultrasonic creeping wave probe as claimed in claim 1, Features: The special comparison test block includes a special comparison test block with a length of 200 mm, a width of 20 mm, and a height of 60 mm; The first transverse through hole and the second transverse through hole are both 60 mm away from the leftmost edge of the special comparison test block; The first transverse through hole is 20 mm away from the upper surface of the special comparison test block; The second transverse through hole is 40 mm away from the upper surface of the special comparison test block.

3. A method for detecting the leading edge and delay of an ultrasonic creeping wave probe as claimed in claim 1, Features: The depth of the two wire cutting grooves is 3 mm and the width is 0.5 mm; The two wire-cut grooves are both 60 mm away from the rightmost edge of the special comparison test block, and the horizontal distances between the two wire-cut grooves and the center of the first transverse through hole and the center of the second transverse through hole are both 80 mm.

4. A method for detecting the leading edge and delay of an ultrasonic creeping wave probe as claimed in claim 1, Features: The first cutting distance is 40 mm; The preset value of the reflection signal level is 40 mm.

5. An ultrasonic creeping wave probe front and delay detection system, It is characterized in that Applied to a special comparison test block, the special comparison test block includes two wire cutting grooves respectively arranged on the upper and lower surfaces of the special comparison test block and a first transverse through hole and a second transverse through hole spaced from top to bottom in the vertical direction and having the same diameter, the system includes: A first scanning module is used to place a creeping wave probe on the special comparison test block, drive the creeping wave probe to move to the highest reflected wave height of the first transverse through hole, adjust it to 80% of the reference wave height, and measure a first horizontal distance from the front end of the creeping wave probe to the first transverse through hole; The second scanning module is used to drive the creeping wave probe to move to the highest reflected wave height of the second transverse through hole, adjust it to 80% of the reference wave height, and measure the second horizontal distance from the front end of the creeping wave probe to the second transverse through hole; A front acquisition module, used for obtaining the front of the creeping wave probe according to the first horizontal distance and the second horizontal distance; The delay test module is used to input the front edge of the creeping wave probe into the ultrasonic flaw detector, and place the creeping wave probe on the special comparison test block, drive the creeping wave probe to move to a position where the horizontal distance from the wire cutting groove is the first cutting distance, adjust the gain of the ultrasonic flaw detector, make the creeping wave reflection signal of the creeping wave probe in the wire cutting groove reach 80% of the reference wave height, and adjust the delay value of the ultrasonic flaw detector, so that the creeping wave reflection signal level value displayed by the ultrasonic flaw detector is the preset value of the reflection signal level. At this time, the delay value displayed on the ultrasonic flaw detector is the delay value of the creeping wave probe; A defect locating module, used to perform creeping wave detection according to the front edge of the creeping wave probe and the delay value of the creeping wave probe to determine the defect location; The step of obtaining the front edge of the creeping wave probe according to the first horizontal distance and the second horizontal distance specifically includes: The first horizontal distance and the second horizontal distance are input into a pre-constructed creeping wave refraction angle model to obtain a shear wave refraction angle value; the creeping wave probe front is obtained according to the shear wave refraction angle value and the pre-constructed first transverse through hole refraction model or the second transverse through hole refraction model, wherein the creeping wave refraction angle model is specifically: In the formula, Indicates the shear wave refraction angle value; L 1 Indicates the first horizontal distance from the front end of the creeping wave probe to the first transverse through hole; L 2 Indicates the second horizontal distance from the front end of the creeping wave probe to the second transverse through hole; H 1 Indicates the distance between the first transverse through hole and the upper surface of the special comparison test block; H 2 Indicates the distance between the second transverse through hole and the upper surface of the special comparison test block; The first transverse through hole refraction model is specifically: In the formula, H 1 Indicates the distance between the first transverse through hole and the upper surface of the special comparison test block; Indicates the shear wave refraction angle value; L 1 Indicates the first horizontal distance from the front end of the creeping wave probe to the first transverse through hole; L 0 Indicates the leading edge of the creeping wave probe; The second transverse through hole refraction model is specifically: In the formula, H 2 Indicates the distance between the first transverse through hole and the upper surface of the special comparison test block; Indicates the shear wave refraction angle value; L 2 Indicates the first horizontal distance from the front end of the creeping wave probe to the first transverse through hole; L 0 Indicates the leading edge of the creeping wave probe.

6. A computer device, Features: The computer device comprises a processor and a memory, wherein the processor is connected to the memory, the memory is used to store a computer program, and the processor is used to execute the computer program stored in the memory, so that the computer device executes the method according to any one of claims 1 to 4.

7. A computer-readable storage medium, Features: The computer-readable storage medium stores a computer program, and when the computer program is executed, the method according to any one of claims 1 to 4 is implemented.

Images