An ultrasonic thickness measurement device for oil pipeline inspection

Abstract

The invention relates to the technical field of pipeline detection devices, and discloses an ultrasonic thickness measurement oil pipeline detection device, comprising a probe for transmitting and receiving ultrasonic waves, a flat detection surface being provided at the front end of the probe, an ultrasonic generator being provided inside, grid holes for sound waves to pass through being arranged on the detection surface, at least four support components being provided at the edge of the detection surface, the support component being composed of a support head and a support rod, when the detection surface is in close contact with a pipeline to be detected, the support head is also in close contact with an outer wall of the pipeline, the support head is connected to the support rod, a cavity for the support rod to slide is provided inside the support component, when the detection surface and the pipeline contact tangent points are different, the detection surface will have different inclinations, so that different support heads drive the support rods connected to themselves to generate displacement, according to the displacement of the support rod, the position of the tangent point between the detection surface and the pipeline can be judged, and the timing of the sound waves emitted by the ultrasonic generator in the probe passing through the grid holes can be adjusted.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline detection devices, and in particular to an ultrasonic thickness measurement oil pipeline detection device. Background Art

[0002] Ultrasonic pipeline detection device is a high-tech equipment that uses ultrasonic technology to perform non-invasive detection of the internal conditions of pipelines. It analyzes the defects, fluid state, wall thickness, material and other information inside the pipeline by emitting high-frequency sound waves and receiving their reflected signals. This device has the characteristics of non-destructive testing and can achieve comprehensive detection of pipelines without destroying the pipeline structure or affecting the flow of fluid. The application range of ultrasonic pipeline detection device is wide and it is suitable for pipelines of various materials and diameters, including metal, plastic, ceramic, etc. It can monitor the changes inside the pipeline in real time and promptly discover potential problems such as cracks, corrosion, foreign matter, etc., providing an important basis for the maintenance and safe operation of the pipeline. At the same time, the device also has high precision and accuracy, and can measure tiny changes in wall thickness and flow rate differences to ensure the reliability of the detection results. Ultrasonic pipeline detection device is an indispensable and important equipment in modern industry. With its unique detection principle, wide range of applications and precise detection capabilities, it provides a strong guarantee for the safe operation and effective maintenance of pipelines.

[0003] When pipe fittings are of different sizes, they will have different curvatures. If the curvature radius of the workpiece is too small, such as when the diameter of the pipe is small, the probe surface is usually flat, and the contact with the curved surface is point contact or line contact. The sound intensity transmittance is low (poor coupling), making it difficult for ultrasonic waves to penetrate the pipe. It is necessary to add a coupling agent. The coupling agent is used to exclude the air between the probe and the object to be measured so that the ultrasonic wave can effectively penetrate the workpiece to achieve the purpose of detection. However, if the type or method of use is improper, it will cause errors or the coupling mark will flash and measurement will be impossible. The use of coupling agents also requires consideration of subsequent cleaning issues, which increases the workers' detection steps and greatly reduces efficiency. At the same time, the amount of coupling agent needs to be controlled. Too much or too little coupling agent will affect the test results. Summary of the invention

[0004] (I) Technical problems to be solved: In view of the shortcomings of the prior art, the present invention provides an oil pipeline detection device for ultrasonic thickness measurement, which has the advantage of being able to focus and deflect ultrasonic waves, and solves the problem of small contact area between the probe and the pipeline.

[0005] (II) Technical solution: In order to achieve the purpose of focusing and deflecting the above-mentioned ultrasonic wave, the present invention provides the following technical solution: an ultrasonic thickness measurement oil pipeline detection device, comprising a probe for transmitting and receiving ultrasonic waves, the front end of the probe is provided with a flat detection surface, an ultrasonic generator is provided inside, the detection surface is arranged with grid holes for sound waves to pass through, at least 4 support components are provided at the edge of the detection surface, the support component is composed of a support head and a support rod, when the detection surface is in close contact with the pipeline to be detected, the support head will also be in close contact with the outer wall of the pipeline, the support head is connected to the support rod, and a cavity is provided inside the support component for the support rod to slide, when the contact point between the detection surface and the pipeline is different, the detection surface will have different inclinations, so that different support heads drive the support rods connected to themselves to produce displacement.

[0006] According to the displacement of the support rod, the position of the intersection point between the detection surface and the pipeline can be determined, and the timing of the sound waves emitted by the ultrasonic generator in the probe passing through the grid hole can be adjusted.

[0007] Preferably, the grid holes are arranged in a straight line, disposed on the central axis of the detection surface, and are arranged in at least 4 rows.

[0008] Preferably, the number of ultrasonic generators is the same as the number of grid hole columns, and each ultrasonic generator controls the acoustic wave timing of a corresponding column of grid holes.

[0009] Preferably, a strip with through holes is provided on the inner side of the detection surface, the strip is in close contact with the detection surface, the strip is made of flexible material, and winders are provided on both sides. By controlling the winding amount of the winders on both sides and controlling the overlapping position of the through holes and the grid holes on the winders, the timing can be changed without using multiple sound wave transmitters.

[0010] Preferably, a pressure measuring instrument is provided inside the support assembly, and the pressure measuring instrument is connected to the support rod via a spring.

[0011] Preferably, the support head is made of silicone, so that the support head and the pipeline fit better.

[0012] Preferably, depressions are provided at the holding positions on both sides of the probe, and anti-slip strips are provided in the depressions to prevent the probe from slipping due to sweaty hands or slippery pipe surfaces during the detection process, thereby ensuring the safety and stability of the detection operation.

[0013] (III) Beneficial effects: Compared with the prior art, the present invention provides an ultrasonic thickness measurement oil pipeline detection device, which has the following beneficial effects: 1. The ultrasonic thickness measurement oil pipeline detection device, through the design of the support assembly and the support head, can accurately sense the contact tangent point position between the detection surface and the outer wall of the pipeline, and adjust the emission timing of the ultrasonic wave according to the displacement of the support rod. This adjustment ensures that the ultrasonic wave can be accurately focused on the tangent point, thereby reducing the propagation loss of the sound wave in the air and improving the measurement accuracy of the ultrasonic wave on the pipeline wall thickness. By using phased array technology, by adjusting the emission timing of the ultrasonic wave in the grid hole, wave interference is generated to form a focusing effect, which makes the main energy of the ultrasonic wave concentrated in a specific direction, that is, the tangent point between the detection surface and the outer wall of the pipeline, greatly enhancing the signal strength in this area and improving the sensitivity and reliability of the detection. Since most pipelines are The contact between the detection surface and the outer wall of the pipe will change with the position. The design of the support assembly allows the detection surface to maintain close contact with the outer wall of the pipe at different inclination angles, and adjusts the ultrasonic emission timing through the displacement feedback of the support rod to adapt to the detection needs of different positions, thereby enhancing the adaptability and flexibility of the device. Although coupling agent is traditionally required to reduce the air between the probe and the pipe wall, this device can reduce the energy loss caused by the air gap to a certain extent by accurately controlling the emission timing and focusing direction of the ultrasonic wave, thereby reducing the dependence on the coupling agent and simplifying the detection process. Since the ultrasonic wave can be accurately focused and reduce the propagation loss in the air, the detection process is faster and more efficient. At the same time, by automatically adjusting the ultrasonic emission timing, the need for manual intervention is reduced, further improving the detection efficiency and accuracy.

[0014] 2. In the oil pipeline inspection device for ultrasonic thickness measurement, the through holes on the strip and the grid holes on the inspection surface are overlapped and misaligned through the dynamic control of the winder. This design allows the timing of each column of grid holes to accurately adjust the timing of emitting ultrasonic waves. When the through holes coincide with the grid holes, the sound waves can pass through unimpeded; when the through holes and the grid holes are misaligned, the sound waves will be blocked or weakened. In this way, the emission time and intensity of each column of ultrasonic waves can be accurately controlled, thereby achieving ultrasonic focusing and scanning. Through precise timing control, ultrasonic waves can propagate according to a predetermined path and timing, and near the tangent point where the inspection surface contacts the pipeline. A focusing point is formed. This focusing ability not only improves the sensitivity and accuracy of detection, but also enables the ultrasonic wave to penetrate the pipe wall more deeply to find potential defects or abnormalities. Since the position of the strips and the through holes can be flexibly adjusted, the probe can adapt to pipes of different diameters, different curvatures and different surface conditions. By adjusting the overlapping position and timing of the through holes and the grid holes, accurate and reliable detection results can be obtained under various detection conditions. Only a single ultrasonic transmitter is required to achieve control, which simplifies the practicality of the control method and equipment, and does not require very complex circuits to achieve control.

[0015] 3. The ultrasonic thickness measurement oil pipeline detection device can measure the displacement of the support rod when it is subjected to pipe wall pressure in real time and accurately by arranging a pressure measuring instrument inside the support assembly and connecting it with the spring and the support rod. This non-contact displacement measurement method not only improves the accuracy of the measurement, but also avoids the wear and error that may be caused by mechanical contact. Based on the data of the pressure measuring instrument, the emission timing of the ultrasonic wave can be automatically adjusted, and the precise focusing of the ultrasonic wave can be achieved without manual intervention, which greatly improves the automation and efficiency of the detection and reduces the influence of human factors on the detection results. Since the spring has a certain buffering effect, the influence of the uneven surface or vibration of the pipeline on the detection device can be alleviated to a certain extent, and the reliability and stability of the detection can be improved. The holding positions on both sides of the probe are provided with depressions, and anti-slip strips are provided in the depressions. The depressions are provided at the holding positions on both sides of the probe, which can better fit the finger shape of the operator, provide a comfortable holding feeling, and reduce the hand fatigue caused by long-term use. The anti-slip strips provided in the depressions can increase the friction of the holding surface, prevent the probe from slipping due to sweating of the hands or slippery surface of the pipeline during the detection process, and ensure the safety and stability of the detection operation.

[0016] 4. The ultrasonic thickness measurement oil pipeline detection device, through the grid holes arranged in a straight line, enables the ultrasonic wave to be emitted and received more concentratedly along the central axis direction, reducing the scattering and energy loss of the sound wave. This focusing effect is particularly significant near the tangent point where the detection surface contacts the pipeline, so that the ultrasonic wave can more accurately locate and detect defects or abnormalities inside the pipeline. By setting at least 4 rows of grid holes, not only the focusing accuracy of the ultrasonic wave is improved, but also the coverage of the detection is significantly enhanced. Each row of grid holes can independently emit and receive ultrasonic waves, thereby realizing simultaneous detection of different areas of the pipeline. This multi-row design enables the entire detection surface to cover the inside of the pipeline more comprehensively, reducing the possibility of missed detection. The straight line arrangement is closer to the contact surface between the probe and the pipeline, improving the focusing efficiency, reducing energy loss, and reducing the manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the present invention.

[0018] Figure 2 It is a schematic diagram of the support assembly of the present invention.

[0019] Figure 3 This is a schematic diagram of pipeline detection according to the present invention.

[0020] Figure 4 It is a schematic diagram of the sound wave deflection of the present invention.

[0021] Figure 5 Schematic diagram of the acoustic wave focusing of the present invention.

[0022] Figure 6 This is a schematic cross-sectional view of the probe of Embodiment 2 of the present invention.

[0023] Figure 7 It is a schematic cross-sectional view of the support assembly of the present invention.

[0024] In the figure: 1, probe; 11, detection surface; 12, support assembly; 13, ultrasonic generator; 101, anti-slip strip; 111, grid hole; 121, support head; 122, support rod; 123, pressure measuring instrument; 131, winder; 132, strip. DETAILED DESCRIPTION

[0025] 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 ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] Example 1: Please refer to Figure 1-Figure 3 and Figure 6 , an ultrasonic thickness measurement oil pipeline detection device, comprising a probe 1 for transmitting and receiving ultrasonic waves, a flat detection surface 11 is provided at the front end of the probe 1, an ultrasonic generator 13 is provided inside, the detection surface 11 is arranged with grid holes 111 for sound waves to pass through, at least four support components 12 are provided at the edge of the detection surface 11, the support component 12 is composed of a support head 121 and a support rod 122, when the detection surface 11 is close to the pipeline to be detected, the support head 121 will also be close to the outer wall of the pipeline, the support head 121 is connected to the support rod 122, a cavity is provided inside the support component 12 for the support rod 122 to slide, when the detection surface 11 and the pipeline contact point are different, the detection surface 11 will have different inclinations, so that different support heads 121 drive the support rod 122 connected to themselves to produce displacement, according to the displacement of the support rod 122, the position of the detection surface 11 and the pipeline intersection point can be judged, and the timing of the sound wave emitted by the ultrasonic generator 13 in the probe 1 passing through the grid hole 111 is adjusted.

[0027] The staff holds the probe 1 and places the detection surface 11 at the front end of the probe 1 close to the pipe to be detected. Because most of the pipes are circular pipes, the detection surface 11 is horizontal. When the detection surface 11 contacts the outer wall of the pipe, they are only in close contact at the tangent point. When the probe 1 emits ultrasonic waves, there is air between the probe 1 and the pipe, which will weaken the transmission efficiency. Usually, a coupling agent is required to reduce the air between the detection surface 11 of the probe 1 and the pipe wall. At this time, the support assembly 12 arranged around the detection surface 11 will also contact the pipe wall, and the support head 121 at the front end of the support assembly 12 will be in close contact with the outer side of the pipe wall. When the detection surface 11 is tangent to the outer side of the pipe wall at different inclinations, the support head 121 will drive the support rod 122 to produce different displacements. According to the displacement of the support rod 122, it can detect and The inclination angle of the detection surface 11 is calculated, and the position of the detection surface 11 where the tangent point is located is deduced through the inclination angle, and the interference of waves is generated by controlling the ultrasonic wave passing through the grid holes 111 on the detection surface 11, thereby forming the principle of phased array. By adjusting the emission time of the ultrasonic wave on each array element, i.e., the phase delay, the ultrasonic wave forms a longitudinal interference in the same direction and a destructive interference in other directions. The main energy of the ultrasonic wave will be concentrated in a specific direction for propagation, thereby realizing the deflection of the sound beam. In this way, the main energy of the ultrasonic wave will be focused on a specific point, thereby realizing the focusing of the sound beam. The focusing effect can be achieved by changing the shape of the array, the distance between the array elements, and the emission time delay. Through deflection and focusing, the ultrasonic wave is concentrated in the direction of the tangent point where the detection surface 11 contacts the pipe wall. See Figure 4-Figure 5 The bend in the figure represents the timing of the sound wave emission from the grid hole 111, and the dotted line represents the strongest point of the sound wave. By changing the direction of sound wave gathering through the timing, the energy loss of sound wave transmission in the air is reduced, and the sound wave can directly enter and pass through the pipe wall.

[0028] The grid holes 111 are arranged in a straight line, arranged on the central axis of the detection surface 11, and at least 4 columns are arranged. The number of the ultrasonic generators 13 is the same as the number of columns of the grid holes 111. Each ultrasonic generator 13 controls the acoustic wave timing of the grid holes 111 corresponding to one column. By controlling the ultrasonic timing of each column, the ultrasonic waves emitted by the grid holes 111 are offset along the arrangement direction of the column, close to the tangent point where the end face 11 contacts the pipeline. When viewed from the side, the contact point between the probe 1 and the pipeline is only one tangent point. When viewed from the front, the contact point between the probe 1 and the pipeline is a line. By controlling the acoustic wave timing of different columns of the grid holes 111, the ultrasonic focus can be made closer to the contact position.

[0029] See also Figure 7A pressure measuring instrument 123 is provided inside the support assembly 12. The pressure measuring instrument 123 is connected to the support rod 122 through a spring. By detecting the pressure, the compression amount of the spring is reflected, and the displacement distance of the support rod 122 is obtained. The support head 121 is made of silicone, which is softer and can better fit the pipe wall with different curvatures.

[0030] The holding positions on both sides of the probe 1 are provided with depressions, and anti-slip strips 101 are provided in the depressions. The depressions are provided at the holding positions on both sides of the probe 1 to better fit the shape of the operator's fingers, provide a comfortable holding feeling, and reduce hand fatigue caused by long-term use. The anti-slip strips 101 provided in the depressions can increase the friction of the holding surface, prevent the probe from slipping due to sweating hands or slippery pipeline surface during the detection process, and ensure the safety and stability of the detection operation.

[0031] Example 2: Please refer to Figure 1-Figure 3 and Figure 6 , an ultrasonic thickness measurement oil pipeline detection device, comprising a probe 1 for transmitting and receiving ultrasonic waves, a flat detection surface 11 is provided at the front end of the probe 1, an ultrasonic generator 13 is provided inside, the detection surface 11 is arranged with grid holes 111 for sound waves to pass through, at least four support components 12 are provided at the edge of the detection surface 11, the support component 12 is composed of a support head 121 and a support rod 122, when the detection surface 11 is close to the pipeline to be detected, the support head 121 will also be close to the outer wall of the pipeline, the support head 121 is connected to the support rod 122, a cavity is provided inside the support component 12 for the support rod 122 to slide, when the detection surface 11 and the pipeline contact point are different, the detection surface 11 will have different inclinations, so that different support heads 121 drive the support rod 122 connected to themselves to produce displacement, according to the displacement of the support rod 122, the position of the detection surface 11 and the pipeline intersection point can be judged, and the timing of the sound wave emitted by the ultrasonic generator 13 in the probe 1 passing through the grid hole 111 is adjusted.

[0032] The staff holds the probe 1 and places the detection surface 11 at the front end of the probe 1 close to the pipe to be detected. Because most of the pipes are circular pipes, the detection surface 11 is horizontal. When the detection surface 11 contacts the outer wall of the pipe, they are only in close contact at the tangent point. When the probe 1 emits ultrasonic waves, there is air between the probe 1 and the pipe, which will weaken the transmission efficiency. Usually, a coupling agent is required to reduce the air between the detection surface 11 of the probe 1 and the pipe wall. At this time, the support assembly 12 arranged around the detection surface 11 will also contact the pipe wall, and the support head 121 at the front end of the support assembly 12 will be in close contact with the outer side of the pipe wall. When the detection surface 11 is tangent to the outer side of the pipe wall at different inclinations, the support head 121 will drive the support rod 122 to produce different displacements. According to the displacement of the support rod 122, it can detect and The inclination angle of the detection surface 11 is calculated, and the position of the detection surface 11 where the tangent point is located is deduced through the inclination angle, and the interference of waves is generated by controlling the ultrasonic wave passing through the grid holes 111 on the detection surface 11, thereby forming the principle of phased array. By adjusting the emission time of the ultrasonic wave on each array element, i.e., the phase delay, the ultrasonic wave forms a longitudinal interference in the same direction and a destructive interference in other directions. The main energy of the ultrasonic wave will be concentrated in a specific direction for propagation, thereby realizing the deflection of the sound beam. In this way, the main energy of the ultrasonic wave will be focused on a specific point, thereby realizing the focusing of the sound beam. The focusing effect can be achieved by changing the shape of the array, the distance between the array elements, and the emission time delay. Through deflection and focusing, the ultrasonic wave is concentrated in the direction of the tangent point where the detection surface 11 contacts the pipe wall. See Figure 4-Figure 5 The bend in the figure represents the timing of the sound wave emission from the grid hole 111, and the dotted line represents the strongest point of the sound wave. By changing the direction of sound wave gathering through the timing, the energy loss of sound wave transmission in the air is reduced, and the sound wave can directly enter and pass through the pipe wall.

[0033] See also Figure 6The grid holes 111 are arranged in a straight line, arranged on the central axis of the detection surface 11, and at least 4 rows are arranged. A strip 132 with through holes is arranged on the inner side of the detection surface 11. The strip 132 is tightly attached to the detection surface 11. The strip 132 is made of a flexible material, and a winder 131 is arranged on both sides. By controlling the winding amount of the winders 131 on both sides, the overlapping position of the through holes on the winders 131 and the grid holes 111 is controlled, so that only the sound waves at the positions that coincide with the through holes are not blocked, and the winder 131 drives the strip 132 to move to realize the control of the timing of the sound waves. By controlling the timing of each column of ultrasonic waves, the ultrasonic waves emitted by the grid holes 111 are offset along the arrangement direction of the columns, close to the tangent point where the end face 11 contacts the pipeline. When viewed from the side, the contact point between the probe 1 and the pipeline is only one tangent point, and when viewed from the front, the contact point between the probe 1 and the pipeline is a line. By controlling the timing of the sound waves of different columns of the grid holes 111, the focus of the ultrasonic waves can be made closer to the contact position. The strip 132 can be made of rubber. The rubber material also has good flexibility and sealing properties, and can fit tightly on the detection surface 11 to reduce the leakage of sound waves.

[0034] See also Figure 7 A pressure measuring instrument 123 is provided inside the support assembly 12. The pressure measuring instrument 123 is connected to the support rod 122 through a spring. By detecting the pressure, the compression amount of the spring is reflected, and the displacement distance of the support rod 122 is obtained. The support head 121 is made of silicone, which is softer and can better fit the pipe wall with different curvatures.

[0035] The holding positions on both sides of the probe 1 are provided with depressions, and anti-slip strips 101 are provided in the depressions. The depressions are provided at the holding positions on both sides of the probe 1 to better fit the shape of the operator's fingers, provide a comfortable holding feeling, and reduce hand fatigue caused by long-term use. The anti-slip strips 101 provided in the depressions can increase the friction of the holding surface, prevent the probe from slipping due to sweating hands or slippery pipeline surface during the detection process, and ensure the safety and stability of the detection operation.

[0036] Working principle: The staff holds the probe 1 and puts the detection surface 11 at the front end of the probe 1 close to the pipe to be tested. Because most of the pipes are circular pipes, the detection surface 11 is horizontal. When the detection surface 11 contacts the outer wall of the pipe, they are only close at the tangent point. When the probe 1 emits ultrasonic waves, there is air between the probe 1 and the pipe, which will weaken the transmission efficiency. Usually, a coupling agent is required to reduce the air between the detection surface 11 of the probe 1 and the pipe wall. At this time, the support assembly 12 arranged around the detection surface 11 will also contact the pipe wall. The support head 121 at the front end of the support assembly 12 is close to the outside of the pipe wall. When the detection surface 11 is tangent to the outside of the pipe wall at different inclinations, the support head 121 will drive the support rod 122 to produce different displacements. According to the displacement of the support rod 122, the inclination angle of the detection surface 11 can be detected and calculated. The position of the tangent point on the detection surface 11 can be deduced through the inclination angle, and the detection surface can be controlled by the control device. The ultrasonic wave passes through the grid hole 111 on 11 in a timing sequence, generates wave interference, and forms the principle of phased array. By adjusting the emission time of the ultrasonic wave on each array element, that is, the phase delay, the ultrasonic wave forms a longitudinal interference in the same direction, and forms a destructive interference in other directions. The main energy of the ultrasonic wave will be concentrated in a specific direction for propagation, realizing the deflection of the sound beam. In this way, the main energy of the ultrasonic wave will be focused on a specific point to realize the focusing of the sound beam. The focusing effect can be achieved by changing the shape of the array, the distance between the array elements and the emission time delay. Through deflection and focusing, the ultrasonic wave is concentrated in the direction of the tangent point where the detection surface 11 contacts the pipe wall, reducing the energy lost by the sound wave in the air, and can directly enter and pass through the pipe wall. At the same time, the use of coupling agent is reduced, the detection efficiency is improved, and the need to clean the pipe wall after the detection is completed is avoided. In addition, the gathering of sound waves can also enhance the detected ultrasonic wave and improve the detection accuracy.

[0037] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An ultrasonic thickness measurement oil pipeline detection device, comprising a probe (1) for transmitting and receiving ultrasonic waves, the front end of the probe (1) being provided with a flat detection surface (11), an ultrasonic generator (13) being provided inside, and grid holes (111) being arranged on the detection surface (11) for sound waves to pass through, characterized in that: At least four support components (12) are provided at the edge of the detection surface (11), and the support component (12) is composed of a support head (121) and a support rod (122). When the detection surface (11) is in close contact with the pipeline to be detected, the support head (121) will also be in close contact with the outer wall of the pipeline. The support head (121) is connected to the support rod (122). A cavity is provided inside the support component (12) for the support rod (122) to slide. When the contact points between the detection surface (11) and the pipeline are different, the detection surface (11) will have different inclinations, so that different support heads (121) drive the support rods (122) connected to them to produce displacement; According to the displacement of the support rod (122), the position of the intersection point between the detection surface (11) and the pipeline can be determined, and the timing of the sound waves emitted by the ultrasonic generator (13) in the probe (1) passing through the grid hole (111) is adjusted. By using phased array technology, the emission timing of the ultrasonic waves in the grid hole is adjusted to generate wave interference and form a focusing effect, so that the main energy of the ultrasonic wave is concentrated in a specific direction, that is, at the intersection point between the detection surface and the outer wall of the pipeline.

2. The ultrasonic thickness measurement oil pipeline detection device according to claim 1 is characterized in that: The grid holes (111) are arranged in a straight line, are arranged on the central axis of the detection surface (11), and are arranged in at least four rows.

3. The ultrasonic thickness measurement oil pipeline detection device according to claim 2 is characterized by: The number of ultrasonic generators (13) is the same as the number of columns of grid holes (111), and each ultrasonic generator (13) controls the acoustic wave timing of a corresponding column of grid holes (111).

4. The ultrasonic thickness measurement oil pipeline detection device according to claim 2 is characterized by: A strip (132) with through holes is provided on the inner side of the detection surface (11); the strip (132) is in close contact with the detection surface (11); the strip (132) is made of a flexible material, and winding machines (131) are provided on both sides; and the overlapping positions of the through holes on the winding machines (131) and the grid holes (111) are controlled by controlling the winding amounts of the winding machines (131) on both sides.

5. The oil pipeline detection device for ultrasonic thickness measurement according to claim 1 is characterized in that: A pressure measuring instrument (123) is provided inside the support assembly (12), and the pressure measuring instrument (123) is connected to the support rod (122) via a spring.

6. The oil pipeline detection device for ultrasonic thickness measurement according to claim 5 is characterized by: The support head (121) is made of silicone.

7. An ultrasonic thickness measurement oil pipeline detection device according to any one of claims 1 to 6, characterized in that: The gripping positions on both sides of the probe (1) are provided with depressions, and anti-slip strips (101) are provided in the depressions.

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