Steel pipe eddy current detection device

Abstract

The invention relates to the field of eddy current detection, and provides a steel pipe eddy current detection device which comprises an eddy current detection piece, a steel pipe center recognition assembly and a moving assembly. The eddy current detection member has a probe hole. The steel pipe center identification assembly comprises a horizontal identification unit and a vertical identification unit; the horizontal identification unit comprises a horizontal driving part and a horizontal identification sensor; the horizontal driving piece is connected with the horizontal identification sensor; the horizontal identification sensor can identify two opposite side edges of the steel pipe to be detected in the horizontal width direction; the vertical identification unit comprises a vertical driving piece and a vertical identification sensor; the vertical driving piece is connected with the vertical identification sensor; the vertical identification sensor can identify two opposite side edges of the steel pipe to be detected in the vertical width direction; the moving assembly is connected with the eddy current detection piece and used for driving the eddy current detection piece to move so that the central axis of the probe hole can pass through the horizontal center and the vertical center of the to-be-detected steel pipe. The eddy current detection device solves the problem that a traditional eddy current detection device is low in detection accuracy.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of eddy current testing, in particular to a steel pipe eddy current testing device. BACKGROUND

[0002] In industrial production, steel pipes, as an important basic component, are widely used in many fields such as construction, machinery manufacturing, petroleum and chemical industry, etc. With the continuous development of various industries, the requirements for the quality of steel pipes are also increasing. The internal defects of steel pipes may affect their performance and safety, so it is particularly important to detect the quality of steel pipes. Accurate and efficient steel pipe detection technology is of great significance to ensure product quality, improve production efficiency and reduce production cost, and can provide strong support for the stable development of various industries.

[0003] In the past, the industry usually adopts various ways for the detection of steel pipes, such as manual detection, eddy current detection and ultrasonic detection, etc. Among them, the eddy current detection is generally to convey the steel pipe to the probe hole of the eddy current detector through the conveying roller for detection. However, since the accuracy of eddy current detection is affected by the relative orientation of the probe and the steel pipe, in general, when the axis of the steel pipe is collinear with the central axis of the probe hole, the detection accuracy is better. Therefore, when detecting steel pipes of different specifications, the relative orientation of the steel pipe and the probe usually needs to be adjusted repeatedly by the staff, which is very cumbersome. Even for steel pipes of the same specification, the center of the steel pipe may deviate from the center of the probe hole due to slight bending of the steel pipe, wear of the conveying roller and other reasons, thereby affecting the accuracy of the detection. SUMMARY

[0004] In order to solve the problem of low detection accuracy of the traditional eddy current detection device, the present application provides a steel pipe eddy current detection device.

[0005] The steel pipe eddy current detection device provided by the present application adopts the following technical scheme: A steel pipe eddy current detection device, comprising: an eddy current detection member; a steel pipe center identification assembly, comprising a horizontal identification unit and a vertical identification unit; the horizontal identification unit comprises a horizontal driving member and a horizontal identification sensor; the horizontal driving member is connected with the horizontal identification sensor and is used to drive the horizontal identification sensor to move horizontally; the horizontal identification sensor is configured to identify the relative two side edges of the steel pipe to be tested in the horizontal width direction and obtain the horizontal center of the steel pipe to be tested; the vertical identification unit comprises a vertical driving member and a vertical identification sensor; the vertical driving member is connected with the vertical identification sensor and is used to drive the vertical identification sensor to move vertically; the vertical identification sensor is configured to identify the relative two side edges of the steel pipe to be tested in the vertical width direction and obtain the vertical center of the steel pipe to be tested; A moving assembly is connected with the eddy current detection member and is used to drive the eddy current detection member to move so that the central axis of the probe hole of the eddy current detection member passes through the horizontal center and the vertical center of the steel pipe to be detected.

[0006] By adopting the above technical solutions, the horizontal identification sensor can identify the relative two side edges of the steel pipe to be detected in the horizontal width direction, and then the coordinates of the horizontal center of the steel pipe can be obtained; the vertical identification sensor can identify the relative two side edges of the steel pipe to be detected in the vertical width direction, and then the coordinates of the vertical center of the steel pipe can be obtained; the moving assembly can drive the eddy current detection member to move so that the central axis of the probe hole of the eddy current detection member passes through the horizontal and vertical centers of the steel pipe to be detected, so that the center of the steel pipe is on the central axis of the probe hole of the eddy current detection member, and then accurate eddy current detection of the steel pipe can be performed.

[0007] Optionally, the steel pipe eddy current detection device further comprises a limiting assembly, which is arranged between the steel pipe center identification assembly and the eddy current detection member; the limiting assembly is used to limit the cooperation with the steel pipe to be detected when the central axis of the eddy current detection member passes through the horizontal center and the vertical center of the steel pipe to be detected.

[0008] By adopting the above technical solutions, the limiting assembly is arranged between the steel pipe center identification assembly and the eddy current detection member, can limit the cooperation with the steel pipe to be detected when the central axis of the probe hole of the eddy current detection member reaches the specified position, and can ensure the stability of the position of the steel pipe to be detected during detection, thereby improving the detection accuracy.

[0009] Optionally, the limiting assembly is connected with the moving assembly; the moving assembly is further used to drive the limiting assembly to move synchronously with the eddy current detection member.

[0010] By adopting the above technical solutions, the limiting assembly can limit the cooperation with the steel pipe to be detected when the central axis of the eddy current detection member passes through the horizontal center and the vertical center of the steel pipe to be detected, and the moving assembly drives the limiting assembly to move synchronously with the eddy current detection member, so that the moving assembly can adjust the positions of the eddy current detection member and the limiting assembly at the same time, ensures that the limiting assembly can accurately reach the specified position and limit the cooperation with the steel pipe to be detected, and guarantees the stability of the steel pipe during the detection process, thereby improving the detection precision.

[0011] Optionally, the number of the horizontal driving members and the number of the horizontal identification sensors are both two, and the two horizontal driving members are connected with the two horizontal identification sensors in a one-to-one correspondence; one of the horizontal identification sensors is used to identify one side edge of the steel pipe to be detected in the horizontal width direction, and the other horizontal identification sensor is used to identify the other side edge of the steel pipe to be detected in the horizontal width direction.

[0012] By adopting the technical scheme, the two horizontal identification sensors can identify two side edges of the steel pipe to be detected in the horizontal width direction, and the horizontal drive member can drive the horizontal identification sensors, so that the horizontal center of the steel pipe to be detected can be more accurately and efficiently obtained, and a more accurate positioning basis is provided for the subsequent positioning of the central axis of the probe hole of the eddy current detection member through the horizontal center and the vertical center of the steel pipe to be detected, thereby improving the accuracy and reliability of the eddy current detection of the steel pipe.

[0013] Optionally, the steel pipe eddy current detection device further comprises a conveying assembly, the conveying assembly comprising two steel pipe conveying units and two pipe pressing units. The two pipe pressing units are respectively arranged on opposite sides of the eddy current detection member, and each pipe pressing unit is provided with a steel pipe conveying unit on the side away from the eddy current detection member.

[0014] By adopting the technical scheme, the steel pipe eddy current detection device increases the conveying assembly, the conveying assembly comprising two steel pipe conveying units and two pipe pressing units, the two pipe pressing units being arranged on opposite sides of the eddy current detection member, and each pipe pressing unit being provided with a steel pipe conveying unit on the side away from the eddy current detection member, so that the conveying and stable pressing of the steel pipe to be detected can be realized, the steel pipe can smoothly reach the detection position, and the detection efficiency and stability are improved.

[0015] Optionally, the pipe pressing unit comprises a base, a lifting seat, a control rod, a hand wheel, a pipe pressing driving cylinder, a supporting wheel and a pressing wheel. The lifting seat is slidingly arranged on the base, the control rod is vertically arranged and threadedly connected with the base, the top of the control rod is connected with the hand wheel, and the bottom of the control rod is rotationally connected with the lifting seat. The supporting wheel is rotationally connected with the base, and the supporting wheel is located below the lifting seat, the lifting seat has a rotating part, the rotating part is rotationally connected with the body of the lifting seat, the pressing wheel is rotationally connected with the rotating part, and the pipe pressing driving cylinder is hingedly arranged on the lifting seat and hingedly connected with the rotating part.

[0016] By adopting the technical scheme, the pipe pressing unit can flexibly support and press the steel pipe. Rotating the hand wheel can drive the control rod to slide the lifting seat on the base, adjust the distance between the pressing wheel and the supporting wheel to adapt to different specifications of the steel pipe, drive the rotating part to rotate by the pipe pressing driving cylinder, and then drive the pressing wheel to move, so that the pressing wheel can press the steel pipe, and stable steel pipe conveying conditions are provided for the eddy current detection of the steel pipe.

[0017] Optionally, the steel pipe eddy current detection device further comprises a demagnetization assembly, and the demagnetization assembly is located on the front side of the two pipe pressing units along the conveying direction of the steel pipe to be detected.

[0018] By adopting the technical scheme, the demagnetization assembly is located at the front side of the two pipe pressing units to demagnetize the steel pipe after eddy current detection, avoids the influence of the magnetized steel pipe on subsequent detection, and avoids the adsorption of metal particles after the steel pipe is magnetized.

[0019] Optionally, the steel pipe eddy current detection device further comprises a visual identification incoming material detector; and the steel pipe center identification assembly is located in the identification and detection range of the visual identification incoming material detector.

[0020] By adopting the technical scheme, the visual identification incoming material detector can detect the incoming material of the steel pipe center identification assembly in the identification and detection range, so as to facilitate the understanding of the incoming material of the steel pipe.

[0021] Optionally, the horizontal identification sensor is an infrared sensor.

[0022] By adopting the technical scheme, the infrared sensor is used as the horizontal identification sensor, so that the relative two side edges of the steel pipe to be detected in the horizontal width direction can be accurately identified, and then the horizontal center of the steel pipe to be detected is obtained, which provides a basis for the accurate movement of the eddy current detection element, and improves the detection accuracy and reliability of the steel pipe eddy current detection device.

[0023] In summary, the present application has at least one of the following beneficial technical effects: 1. The steel pipe center identification assembly is used to quickly and accurately determine the horizontal center and the vertical center of the steel pipe to be detected, and then the central axis of the probe hole of the eddy current detection element passes through the center of the steel pipe, which is beneficial to accurate detection of the steel pipe; 2. The moving assembly can simultaneously adjust the positions of the eddy current detection element and the limiting assembly, so that the limiting assembly can be limited to cooperate with the steel pipe to be detected when the central axis of the probe hole of the eddy current detection element passes through the horizontal center and the vertical center of the steel pipe to be detected, so as to ensure the stability of the steel pipe during detection and improve the detection accuracy; 3. By providing the conveying assembly, the conveying and stable pressing of the steel pipe to be detected can be realized, so as to facilitate the smooth arrival of the steel pipe at the detection position and improve the detection efficiency and stability. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a schematic diagram of the steel pipe eddy current detection device provided by the present application.

[0025] Figure 2 is a schematic diagram of the steel pipe eddy current detection device provided by the present application. Figure 1 is an enlarged schematic diagram of position A in the steel pipe eddy current detection device.

[0026] Figure 3 is a schematic diagram of the steel pipe center identification assembly of the steel pipe eddy current detection device provided by the present application.

[0027] Figure 4This is a schematic diagram of the limiting component of the steel pipe eddy current detection device provided in this application.

[0028] Explanation of reference numerals in the attached figures: 1. Eddy current testing components; 2. Conveying assembly; 21. Steel pipe conveying unit; 22. Pipe pressing unit; 221. Base; 222. Lifting seat; 2221. Rotating part; 223. Control lever; 224. Handwheel; 225. Pipe pressing drive cylinder; 226. Support wheel; 227. Pressing wheel; 3. Moving component; 31. Second mounting bracket; 32. Third mounting bracket; 33. Lifting frame; 34. Lifting platform; 35. Horizontal drive unit; 4. Steel pipe center identification component; 41. First mounting frame; 42. Horizontal identification unit; 421. Horizontal drive component; 422. Horizontal identification sensor; 43. Vertical identification unit; 431. Vertical drive component; 432. Vertical identification sensor; 5. Limiting assembly; 51. Second mounting frame; 52. Limiting unit; 521. Limiting wheel; 522. Limiting drive cylinder; 6. Demagnetizing assembly. Detailed Implementation

[0029] The following is in conjunction with the appendix Figures 1 to 4 This application will be further described in detail. In this application, the front and rear sides are based on the direction of movement of the steel pipe to be tested. For example, if the eddy current detection component 1 is located in front of the steel pipe center identification component 4, then during steel pipe testing, the steel pipe to be tested first passes through the steel pipe center identification component 4 and then passes through the eddy current detection component 1.

[0030] like Figures 1 to 3 As shown in the figure, this application discloses a steel pipe eddy current detection device, including an eddy current detection component 1, a conveying component 2, a moving component 3, and a steel pipe center identification component 4.

[0031] Specifically, the eddy current testing component 1 is an eddy current testing machine, which has a probe hole. When the steel pipe passes through the probe hole, the eddy current testing component 1 can perform eddy current testing on the steel pipe.

[0032] like Figures 1 to 2 As shown, the conveying assembly 2 includes two steel pipe conveying units 21 and two pressing units 22. The two pressing units 22 are respectively located on opposite sides of the eddy current detection element 1, and a steel pipe conveying unit 21 is provided on the side of any pressing unit 22 facing away from the eddy current detection element 1.

[0033] The steel pipe conveying unit 21 comprises a first mounting frame, a conveying drive motor, a conveying transmission mechanism and a plurality of conveying rollers. The conveying rollers are rotationally connected to the first mounting frame, and the plurality of conveying rollers are drivingly connected through the conveying transmission mechanism, which can be a gear chain transmission mechanism. The conveying motor is drivingly connected to one of the conveying rollers. When the steel pipe to be tested is placed on the conveying rollers, the conveying drive motor can drive the conveying rollers to rotate, thereby conveying the steel pipe to be tested. The conveying rollers are provided with grooves, and the steel pipe to be tested is placed in the grooves, which can limit the steel pipe to be tested.

[0034] The pipe pressing unit 22 comprises a base 221, a lifting seat 222, a control lever 223, a hand wheel 224, a pipe pressing drive cylinder 225, a supporting wheel 226 and a pressing wheel 227. The lifting seat 222 is slidingly arranged on the base 221, and the control lever 223 is vertically arranged and threadedly connected to the base 221. The top of the control lever 223 is connected to the hand wheel 224, and the bottom is rotationally connected to the lifting seat 222. The supporting wheel 226 is rotationally connected to the base 221 and is located below the lifting seat 222. The lifting seat 222 has a rotating part 2221 rotationally connected to the body of the lifting seat 222. The pressing wheel 227 is rotationally connected to the rotating part 2221. The pipe pressing drive cylinder 225 is hingedly arranged on the lifting seat 222 and is hingedly connected to the rotating part 2221.

[0035] Specifically, the supporting wheel 226 is used to support the steel pipe to be tested. The supporting wheel 226 can be driven to rotate in the same way as the conveying rollers, thereby moving the steel pipe to be tested. The pipe pressing drive cylinder 225 can be extended and retracted to drive the rotating part 2221 to rotate, thereby enabling the pressing wheel 227 to move into abutment with the steel pipe to be tested on the supporting wheel 226 to prevent the steel pipe to be tested from shaking during detection. The operator can rotate the hand wheel 224 to drive the control lever 223 to rotate, thereby enabling the lifting seat 222 to be raised and lowered to adapt to different specifications of the steel pipe to be tested.

[0036] As Figure 1As shown, the moving assembly 3 comprises a second mounting frame 31, a third mounting frame 32, a lifting frame 33, a lifting machine 34 and a horizontal driving unit 35. The lifting frame 33 is in sliding connection with the second mounting frame 31, and the lifting machine 34 is connected with the lifting frame 33 and can drive the lifting frame 33 to vertically slide. The lifting frame 33 is provided with a horizontal guide rail, and the direction of the horizontal guide rail is perpendicular to the moving direction of the steel pipe to be detected. The third mounting frame 32 is slidingly arranged on the horizontal guide rail. The horizontal driving unit 35 is connected with the third mounting frame 32 and is used to drive the third mounting frame 32 to slide along the horizontal guide rail. The horizontal driving unit 35 can be a motor-screw driving mechanism, and its arrangement is conventional and will not be described in detail. The eddy current detection piece 1 is arranged on the third mounting frame 32, and through the joint action of the lifting machine 34 and the horizontal driving unit 35, the eddy current detection piece 1 can be driven to vertically and horizontally move.

[0037] As shown in Figure 1 and Figure 3 As shown, the steel pipe center identification assembly 4 comprises a first mounting frame 41, a horizontal identification unit 42 and a vertical identification unit 43. The horizontal identification unit 42 comprises a horizontal driving piece 421 and a horizontal identification sensor 422, both of which are arranged on the first mounting frame 41, and the horizontal identification sensor 422 is in sliding connection with the first mounting frame 41. The horizontal driving piece 421 is connected with the horizontal identification sensor 422 and can drive the horizontal identification sensor 422 to move in a horizontal direction perpendicular to the moving direction of the steel pipe to be detected, so as to identify the relative two side edges of the steel pipe to be detected in the horizontal width direction. According to the positions of the relative two side edges of the steel pipe to be detected in the horizontal width direction, the coordinates of the horizontal center of the steel pipe to be detected can be obtained.

[0038] Similarly, the vertical identification unit 43 comprises a vertical driving piece 431 and a vertical identification sensor 432, both of which are arranged on the first mounting frame 41, and the vertical identification sensor 432 is in sliding connection with the first mounting frame 41. The vertical driving piece 431 is connected with the vertical identification sensor 432 and can drive the vertical identification sensor 432 to vertically move, so as to identify the relative two side edges of the steel pipe to be detected in the vertical width direction. According to the positions of the relative two side edges of the steel pipe to be detected in the vertical width direction, the coordinates of the vertical center of the steel pipe to be detected can be obtained.

[0039] According to the horizontal center coordinates and the vertical center coordinates of the part of the steel pipe to be detected, the center point position of the part of the steel pipe to be detected can be accurately obtained. The moving assembly 3 can drive the eddy current detection piece 1 to move so that the central axis of the probe hole of the eddy current detection piece 1 passes through the horizontal center and the vertical center of the steel pipe to be detected at the same time, and then the steel pipe to be detected can pass through the center of the probe hole in the subsequent process, so as to improve the detection accuracy.

[0040] The horizontal driving member 421 and the vertical driving member 431 can be air cylinders. The horizontal identification sensor 422 and the vertical identification sensor 432 can be infrared sensors. The edges of the steel pipe to be detected are identified according to whether the light emitted thereby is blocked by the edges of the steel pipe to be detected.

[0041] In some embodiments, the number of the horizontal driving member 421 and the horizontal identification sensor 422 is two, and the two horizontal driving members 421 are connected to the two horizontal identification sensors 422 one by one. One of the horizontal identification sensors 422 is used to identify one side edge of the steel pipe to be detected in the horizontal width direction, and the other horizontal identification sensor 422 is used to identify the other side edge of the steel pipe to be detected in the horizontal width direction, so as to improve the identification efficiency and quickly determine the coordinates of the horizontal center of the steel pipe to be detected. Similarly, the number of the vertical driving member 431 and the vertical identification sensor 432 is also two, and the two vertical driving members 431 are connected to the two vertical identification sensors 432 one by one.

[0042] As shown in Figure 1 and Figure 4 In some embodiments, the steel pipe eddy current detection device further comprises a limiting assembly 5 arranged between the steel pipe center identification assembly 4 and the eddy current detection member 1. The limiting assembly 5 can be limitedly matched with the steel pipe to be detected when the central axis of the eddy current detection member 1 passes through the horizontal center and the vertical center of the steel pipe to be detected, so as to limit the steel pipe to be detected, so that other parts of the steel pipe to be detected are in the center of the probe hole when passing through the probe hole, so as to improve the detection accuracy. The limiting assembly 5 is arranged on the third mounting frame 32, so that the limiting assembly 5 can move synchronously with the eddy current detection member 1.

[0043] The limiting assembly 5 comprises a second mounting frame 51 and two limiting units 52 arranged on opposite sides of the second mounting frame 51. The limiting unit 52 comprises a limiting wheel 521 and a limiting driving cylinder 522 connected with the limiting wheel 521 and capable of driving the limiting wheel 521 to approach or move away from the steel pipe to be detected. The two limiting wheels 521 can approach the steel pipe to be detected and abut against opposite sides of the steel pipe to be detected, so as to limit the steel pipe to be detected.

[0044] As shown in Figure 1 In some embodiments, the steel pipe eddy current detection device further comprises a demagnetization assembly 6 located on the front side of the two pipe pressing units 22 along the conveying direction of the steel pipe to be detected. After the steel pipe to be detected passes through the eddy current detection, the demagnetization assembly 6 can perform demagnetization treatment on the steel pipe to be detected, so as to avoid that the steel pipe to be detected is attracted to metal foreign matters or affects the detection of other detection procedures.

[0045] In some embodiments, the steel pipe eddy current testing device further comprises a visual identification incoming material detector. The steel pipe center identification assembly 4 is within the identification detection range of the visual identification incoming material detector, and the visual identification incoming material detector can detect the incoming condition of the steel pipe to be tested, so that the steel pipe center identification assembly 4 starts to work. The visual identification incoming material detector can be an industrial camera.

Claims

1. A steel pipe eddy current testing device, characterized in that, include: Eddy current testing component (1) has a probe hole through which the steel pipe to be tested passes; The steel pipe center identification component (4) includes a horizontal identification unit (42) and a vertical identification unit (43); the horizontal identification unit (42) includes a horizontal drive (421) and a horizontal identification sensor (422); the horizontal drive (421) is connected to the horizontal identification sensor (422) and is used to drive the horizontal identification sensor (422) to move horizontally; the horizontal identification sensor (422) is configured to identify the opposite two sides of the steel pipe under test in the horizontal width direction and obtain the horizontal center of the steel pipe under test; the vertical identification unit (43) includes a vertical drive (431) and a vertical identification sensor (432); the vertical drive (431) is connected to the vertical identification sensor (432) and is used to drive the vertical identification sensor (432) to move vertically; the vertical identification sensor (432) is configured to identify the opposite two sides of the steel pipe under test in the vertical width direction and obtain the vertical center of the steel pipe under test; The moving component (3) is connected to the eddy current detection element (1) and is used to drive the eddy current detection element (1) to move so that the central axis of the probe hole of the eddy current detection element (1) passes through the horizontal center and vertical center of the steel pipe to be tested.

2. The eddy current testing device for steel pipes according to claim 1, characterized in that: The steel pipe eddy current detection device further includes a limiting component (5), which is located between the steel pipe center identification component (4) and the eddy current detection component (1). The limiting component (5) is used to limit the steel pipe when the central axis of the eddy current detection component (1) passes through the horizontal center and vertical center of the steel pipe to be tested.

3. The eddy current testing device for steel pipes according to claim 2, characterized in that: The limiting component (5) is connected to the moving component (3); the moving component (3) is also used to drive the limiting component (5) and the eddy current detection component (1) to move synchronously.

4. The eddy current testing device for steel pipes according to claim 1, characterized in that: The number of the horizontal drive unit (421) and the horizontal recognition sensor (422) are both two, and the two horizontal drive units (421) are connected to the two horizontal recognition sensors (422) in a one-to-one correspondence; one of the horizontal recognition sensors (422) is used to identify one side edge of the steel pipe under test in the horizontal width direction, and the other horizontal recognition sensor (422) is used to identify the other side edge of the steel pipe under test in the horizontal width direction.

5. The eddy current testing device for steel pipes according to claim 1, characterized in that: The steel pipe eddy current detection device also includes a conveying assembly (2), which includes two steel pipe conveying units (21) and two pipe pressing units (22). The two pressure tube units (22) are respectively located on opposite sides of the eddy current detection element (1); the steel pipe conveying unit (21) is provided on the side of any pressure tube unit (22) away from the eddy current detection element (1).

6. The eddy current testing device for steel pipes according to claim 5, characterized in that: The pressing unit (22) includes a base (221), a lifting seat (222), a control lever (223), a handwheel (224), a pressing drive cylinder (225), a support wheel (226), and a pressing wheel (227). The lifting seat (222) is slidably mounted on the base (221); the control lever (223) is vertically mounted and threadedly connected to the base (221); the top of the control lever (223) is connected to the handwheel (224), and its bottom is rotatably connected to the lifting seat (222); The support wheel (226) is rotatably connected to the base (221), and the support wheel (226) is located below the lifting seat (222); the lifting seat (222) has a rotating part (2221), and the rotating part (2221) is rotatably connected to the body of the lifting seat (222); the pressure wheel (227) is rotatably connected to the rotating part (2221); the pressure pipe drive cylinder (225) is hinged on the lifting seat (222), and the pressure pipe drive cylinder (225) is hinged to the rotating part (2221).

7. The eddy current testing device for steel pipes according to claim 5, characterized in that: The steel pipe eddy current detection device also includes a demagnetizing component (6); along the conveying direction of the steel pipe to be tested, the demagnetizing component (6) is located in front of the two pressing units (22).

8. The eddy current testing device for steel pipes according to claim 1, characterized in that: The steel pipe eddy current detection device also includes a visual recognition incoming material detector; the steel pipe center recognition component (4) is within the recognition and detection range of the visual recognition incoming material detector.

9. The eddy current testing device for steel pipes according to claim 1, characterized in that: The horizontal identification sensor (422) is an infrared sensor.

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