A steel pipe eddy current testing equipment

Abstract

The present invention relates to a steel pipe eddy current detection device, including an eddy current detection machine and a support frame, wherein the eddy current detection machine is installed on the top of the support frame, and probes are respectively installed on the outer walls on both sides of the eddy current detection machine, the inner holes of the two probes are interconnected and the inner hole axes coincide with each other, and a lift is installed at the bottom of the inner cavity of the support frame through a body support seat, and the telescopic shaft of the lift is connected with a top plate, and a guide shaft is fixed on the top of the top plate, and the guide shaft passes through the top plate of the support frame and is fixedly connected with the bottom of the eddy current detection machine. During the eddy current detection process, since the axis heights of steel pipes of different diameters on the roller are different, the height of the probe in the eddy current detection machine is adjusted by the lift, so that the axis of the eddy current probe coincides with the axis of the steel pipe, so that the flaw detection data collected by the eddy current detection machine is more accurate.

Description

Technical Field

[0001] The invention relates to the technical field of steel pipe quality testing equipment, and in particular to a steel pipe eddy current testing equipment. Background Art

[0002] In the production of steel pipes, in order to detect the surface quality of steel pipes, magnetic flux leakage detection and eddy current detection are generally performed on steel pipes. The working principle of eddy current detection is to use the excitation coil to generate eddy current in the conductive component, and use the detection coil to measure the change of eddy current, so as to obtain relevant information about pipe defects.

[0003] In the steel pipe eddy current testing production line, the steel pipes stored in the loading storage rack are first moved to the loading conveyor rack through the flap on the loading conveyor rack, and the evenly distributed rollers on the loading conveyor rack convey the steel pipes to the main frame. When the steel pipe contacts the rollers of the main frame and reaches under the clamping device, the clamping device clamps the steel pipe. When the steel pipe passes through the probe hole of the testing equipment, eddy current testing of the steel pipe begins. After the test, the steel pipe is moved to the unloading storage rack through the rollers on the unloading conveyor rack.

[0004] However, when the steel pipe passes through the probe hole of the detection equipment for eddy current testing, due to the different axis heights of steel pipes of different diameters on the roller, the steel pipe eddy current testing production line equipped with one eddy current testing device can only test steel pipes of the same diameter model at a time, which has low work efficiency. In addition, the rollers on the production line will also be worn after a long period of handling steel pipes, resulting in a lower conveying position of the steel pipe. When the steel pipe passes through the probe hole of the detection equipment, if the axis of the steel pipe is not on the same axis as the axis of the probe, the flaw detection data collected by the eddy current testing equipment will be biased, which is not conducive to the accuracy of the eddy current testing data. Summary of the invention

[0005] The object of the present invention is to provide a steel pipe eddy current testing device to solve the problems encountered in the above-mentioned background technology.

[0006] To achieve the above object, the technical solution of the present invention is as follows:

[0007] A steel pipe eddy current detection device comprises an eddy current detection machine and a support frame, wherein the eddy current detection machine is installed on the top of the support frame, and probes are respectively installed on the outer walls on both sides of the eddy current detection machine, the inner holes of the two probes are interconnected and the axes of the inner holes coincide with each other, and a lift is installed at the bottom of the inner cavity of the support frame through a body support seat, the telescopic shaft of the lift is connected to a top plate, and a guide shaft is fixed to the top of the top plate, and the guide shaft passes through the top flat plate of the support frame and is fixedly connected to the bottom of the eddy current detection machine.

[0008] In the above scheme, a body mounting plate is provided at the bottom of the eddy current detection machine, a guide rail mounting seat is fixedly connected to the top of the guide shaft, a linear guide is fixed to the top of the guide rail mounting seat, the top of the linear guide is fixedly connected to the body mounting plate, and the guide rail mounting seat is slidably connected to the eddy current detection machine through the linear guide.

[0009] In the above solution, limiting plates are provided on both sides of the machine body mounting plate, and the bottoms of the limiting plates extend out of the bottom of the machine body mounting plate.

[0010] In the above solution, a mounting hole is provided at the bottom of the guide rail mounting seat, and the guide rail mounting seat is fixedly connected to the body mounting plate by means of locking screws passing through the mounting hole.

[0011] In the above solution, baffles are fixed around the top of the support frame, both ends of the baffles are fixed on the pillars of the support frame, and the top of the baffles is fixed on the top plate of the support frame.

[0012] In the above scheme, a guide sleeve is fixed to the bottom of the top flat plate of the support frame, and the guide shaft passes through the top flat plate of the support frame through the guide sleeve and is fixedly connected to the bottom of the eddy current detection machine. A positioning gasket is provided on the top of the top flat plate of the support frame, and the positioning gasket is wrapped around the outside of the guide shaft.

[0013] In the above solution, clamping heads are respectively installed on the outer walls of both sides of the eddy current testing machine, and the clamping heads are located on one side of the probe.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: a lift is installed at the bottom of the inner cavity of the support frame through the body support seat. When the lift drives the telescopic shaft to lift upward during operation, the guide shaft can drive the eddy current detector to move upward, raising the height of the probe. The telescopic shaft can also be retracted downward to reduce the height of the probe in the eddy current detector, so that the axial center hole of the probe in the eddy current detector coincides with the axis of the steel pipe, and a good detection effect is obtained. Since the axis heights of steel pipes of different diameters on the rollers are different, the height of the probe in the eddy current detector is adjusted by the lift, so that the axis of the eddy current probe coincides with the axis of the steel pipe, and the flaw detection data collected by the eddy current detector is more accurate. Even if the rollers on the feeding conveyor frame are worn during the process of transporting the steel pipe, resulting in a lower conveying position of the steel pipe, the height of the probe in the eddy current detector can be adjusted, so that the axis of the eddy current probe can coincide with the axis of the steel pipe, and accurate flaw detection data of the steel pipe can be obtained. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The disclosure of the present invention is described with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of the present invention. In the accompanying drawings, the same reference numerals are used to refer to the same components. Among them:

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 It is a schematic diagram of the overall structure of the present invention when it is implemented;

[0018] Figure 3 for Figure 2 A schematic diagram of the enlarged structure of the eddy current testing machine and the clamping device;

[0019] Figure 4 It is a schematic diagram of the three-dimensional structure of the eddy current testing machine in the present invention.

[0020] Numbers in the figure: 1- eddy current testing machine; 11- machine body mounting plate; 12- probe; 13- limit plate; 14- linear guide; 15- guide rail mounting seat; 16- locking screw; 17- clamping head; 171- handle knob; 172- clamping bump; 2- support frame; 21- baffle; 22- guide sleeve; 23- positioning gasket; 24- guide shaft; 3- lifter; 31- telescopic rod; 32- top plate; 33- machine body supporting seat; 4- clamping device; 5- loading conveyor frame; 6- unloading conveyor frame. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention is now further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the relevant components of the present invention.

[0022] According to the technical solution of the present invention, without changing the essential spirit of the present invention, a person skilled in the art can propose a variety of interchangeable structural modes and implementation modes. Therefore, the following specific implementation modes and the accompanying drawings are only exemplary descriptions of the technical solution of the present invention, and should not be regarded as the entirety of the present invention or as a limitation or restriction to the technical solution of the present invention.

[0023] The technical solution of the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0024] like Figure 1 As shown, a steel pipe eddy current testing device includes an eddy current testing machine 1 and a support frame 2. The eddy current testing machine 1 is installed on the top of the support frame 2. Probes 12 are respectively installed on the outer walls of both sides of the eddy current testing machine 1. The inner holes of the two probes 12 are interconnected and the inner hole axes coincide with each other. When the steel pipe is subjected to eddy current flaw detection, the steel pipe passes through the inner hole of the probe 12 at the inlet end of the eddy current testing machine 1 and is output from the probe 12 at the other end, completing the detection of the entire pipe body.

[0025] See also Figure 2 and Figure 3 During implementation, the eddy current testing machine 1 is installed in the middle of the two clamping devices 4, the output hole of the clamping device 4 is aligned with the detection hole of the probe 12 of the eddy current testing machine 1, and the input end of the clamping device 4 on one side is connected to the loading conveyor frame 5 to transport the steel pipe to the eddy current testing machine 1 for this testing line. After the test is completed, the steel pipe passes through the clamping device 4 on the other side and enters the unloading conveyor frame 6, and is transported to the storage rack by the rollers on the unloading conveyor frame 6.

[0026] Please refer again Figure 1 The top of the support frame 2 is fixed with baffles 21, the two ends of the baffles 21 are fixed on the pillars of the support frame 2, and the top of the baffles 21 is fixed on the top plate of the support frame 2. The baffles 21 are also considered as part of the support frame 2, which can not only fix the support frame 2 to make it more firm, but also add text and pattern information such as product labels on it.

[0027] The bottom of the inner cavity of the support frame 2 is installed with a lifter 3 through a body support seat 33. The lifter 3 drives the telescopic shaft 31 to lift upward during operation. The telescopic shaft 31 of the lifter 3 is connected to a top plate 32. A guide shaft 24 is fixed to the top of the top plate 32. Four guide shafts 24 are provided, which are located at the four ends of the top of the top plate 32. The guide shaft 24 passes through the top flat plate of the support frame 2 and is fixedly connected to the bottom of the eddy current detector 1. Therefore, when the lifter 3 drives the telescopic shaft 31 to lift upward during operation, the guide shaft 24 can drive the eddy current detector 1 to move upward, raising the height of the probe 12. The telescopic shaft 31 can also be retracted downward to lower the height of the probe 12 in the eddy current detector 1, so that the axial center hole of the probe 12 in the eddy current detector 1 coincides with the axis of the steel pipe, and a good detection effect is obtained.

[0028] The bottom of the eddy current detector 1 is provided with a body mounting plate 11, the top of the guide shaft 24 is fixedly connected with a guide rail mounting seat 15, the top of the guide rail mounting seat 15 is fixed with a linear guide rail 14, the linear guide rail 14 includes a slider and a slide rail, the slider and the slide rail are slidably connected, and can be directly purchased as needed. The top of the linear guide rail 14 is fixedly connected to the body mounting plate 11, and the guide rail mounting seat 15 is slidably connected to the eddy current detector 1 through the linear guide rail 14, so that the eddy current detector 1 can be horizontally moved a certain distance at the same height through the linear guide rail 14, so that it is convenient to align the axis of the steel pipe in the left and right directions, so that it is convenient for the axial center hole of the probe 12 to coincide with the axis of the steel pipe, thereby improving the accuracy of eddy current detection.

[0029] In the above scheme, limit plates 13 are provided on both sides of the machine body mounting plate 11, and the bottom of the limit plates 13 extends out of the bottom of the machine body mounting plate 11. In this way, when sliding on the linear guide rail 14, the limit plates 13 can limit the sliding distance of the eddy current testing machine 1 to avoid exceeding the sliding distance.

[0030] As a preferred solution, a mounting hole is provided at the bottom of the guide rail mounting seat 15, and the guide rail mounting seat 15 is fixedly connected to the machine body mounting plate 11 through the mounting hole by a locking screw 16. During implementation, after the eddy current detector 1 is fixed in position by the linear guide rail 14, the locking screw 16 is passed through the mounting hole and fixedly connected to the machine body mounting plate 11, thereby fixing the eddy current detector 1 and the linear guide rail 14 together to prevent the eddy current detector 1 from shifting on the linear guide rail 14 due to vibration generated during the transportation of the steel pipe. When the position of the eddy current detector 1 on the linear guide rail 14 needs to be adjusted, the locking screw 16 can be unscrewed to move it.

[0031] As a preferred solution, a guide sleeve 22 is fixed to the bottom of the top plate of the support frame 2, and the guide shaft 24 passes through the top plate of the support frame 2 through the guide sleeve 22 and is fixedly connected to the bottom of the eddy current detection machine 1, so as to prevent the guide shaft 24 from causing wear to the top plate of the support frame 2 under the drive of the elevator 3. In addition, a positioning gasket 23 is fixed to the top of the top plate of the support frame 2, and the positioning gasket 23 is wrapped around the outside of the guide shaft 24, and its position corresponds to the position of the guide sleeve 22. The guide shaft 24 and the positioning gasket 23 can both limit the lifting direction of the guide shaft 24, so that it can lift the eddy current detection machine 1 vertically upward.

[0032] As a preferred solution, please refer to Figure 4 A clamping head 17 is installed on the outer walls of both sides of the eddy current testing machine 1. The clamping head 17 is located on one side of the probe 12 and is rotatably connected to the body of the eddy current testing machine 1 to clamp the steel pipe workpiece during testing. A handle knob 171 is fixed to one side of the outer wall of the clamping head 17, and an extended and protruding clamping protrusion 172 is fixed to the other side of the outer wall of the clamping head 17. The steel pipe workpiece is clamped by rotating the handle knob 171 and the clamping protrusion 172.

[0033] In the present invention, the bottom of the inner cavity of the support frame 2 is installed with a lifter 3 through the body support seat 33. When the lifter 3 drives the telescopic shaft 31 to lift upward during operation, the guide shaft 24 can drive the eddy current detector 1 to move upward, raising the height of the probe 12. The telescopic shaft 31 can also be retracted downward to reduce the height of the probe 12 in the eddy current detector 1, so that the axial center hole of the probe 12 in the eddy current detector 1 coincides with the axis of the steel pipe, and a good detection effect is obtained. Since the axis heights of steel pipes of different diameters on the rollers are different, the height of the probe 12 in the eddy current detector 1 is adjusted by the lifter 3, so that the axis of the eddy current probe coincides with the axis of the steel pipe, so that the flaw detection data collected by the eddy current detector 1 is more accurate. Even if the rollers on the feeding conveyor frame 5 are worn during the process of transporting the steel pipe, resulting in a lower conveying position of the steel pipe, because the height of the probe 12 in the eddy current detector 1 can be adjusted, the axis of the eddy current probe can coincide with the axis of the steel pipe, and accurate flaw detection data of the steel pipe can be obtained.

[0034] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A steel pipe eddy current testing device, comprising an eddy current testing machine (1) and a support frame (2), wherein the eddy current testing machine (1) is mounted on the top of the support frame (2), and probes (12) are respectively mounted on the outer walls of both sides of the eddy current testing machine (1), the inner holes of the two probes (12) are interconnected and the axes of the inner holes coincide with each other, and the device is characterized in that: A lift (3) is installed at the bottom of the inner cavity of the support frame (2) via a machine body support seat (33); a telescopic shaft (31) of the lift (3) is connected to a top plate (32); a guide shaft (24) is fixed to the top of the top plate (32); the guide shaft (24) passes through the top plate of the support frame (2) and is fixedly connected to the bottom of the eddy current detector (1); The bottom of the eddy current testing machine (1) is provided with a machine body mounting plate (11), the top of the guide shaft (24) is fixedly connected to a guide rail mounting seat (15), the top of the guide rail mounting seat (15) is fixed with a linear guide rail (14), the top of the linear guide rail (14) is fixedly connected to the machine body mounting plate (11), and the guide rail mounting seat (15) is slidably connected to the eddy current testing machine (1) via the linear guide rail (14); Limiting plates (13) are provided on both sides of the machine body mounting plate (11), and the bottoms of the limiting plates (13) extend out of the bottom of the machine body mounting plate (11); A mounting hole is provided at the bottom of the guide rail mounting seat (15), and the guide rail mounting seat (15) is fixedly connected to the machine body mounting plate (11) by means of a locking screw (16) passing through the mounting hole.

2. The steel pipe eddy current testing device according to claim 1, characterized in that: Baffles (21) are fixed around the top of the support frame (2), two ends of the baffles (21) are fixed on pillars of the support frame (2), and the top of the baffles (21) is fixed on a top flat plate of the support frame (2).

3. The steel pipe eddy current testing device according to claim 1, characterized in that: A guide sleeve (22) is fixed to the bottom of the top plate of the support frame (2); the guide shaft (24) passes through the top plate of the support frame (2) through the guide sleeve (22) and is fixedly connected to the bottom of the eddy current detection machine (1); a positioning gasket (23) is provided on the top of the top plate of the support frame (2); the positioning gasket (23) is wrapped around the outside of the guide shaft (24).

4. The steel pipe eddy current testing device according to claim 1, characterized in that: A clamping head (17) is respectively installed on the outer walls of both sides of the eddy current testing machine (1), and the clamping head (17) is located on one side of the probe (12).

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