A device for eddy current inspection of welded pipes

Abstract

This utility model discloses an eddy current flaw detection device for welded pipes, comprising: a conveying mechanism for conveying welded pipes, including a frame, a first conveying roller group and a second conveying roller group disposed on the frame; a flaw detection mechanism including an eddy current detector, a first support, and an annular probe disposed on the first support, the first support being disposed on the frame, the annular probe being electrically connected to the eddy current detector, the annular probe having an inner hole for accommodating the movement of the welded pipe; and a marking mechanism for marking defective welded pipes, including a second support, a nozzle disposed on the second support, a controller for controlling the spraying of liquid from the nozzle, and a liquid storage tank connected to the nozzle, the second support being disposed on the frame, the controller being electrically connected to the eddy current detector, and the nozzle being used to spray liquid onto the defective welded pipes. This utility model can reduce labor intensity and save labor costs.

Description

Technical Field

[0001] This utility model relates to the field of pipe manufacturing equipment technology, and in particular to an eddy current flaw detection device for welded pipes. Background Technology

[0002] Eddy current testing is a non-destructive testing method based on the principle of electromagnetic induction. The detection coil (probe) does not need to contact the workpiece; therefore, the testing speed is fast and it is easy to automate the inspection process. Eddy current testing has high detection sensitivity for defects on or near the surface of the workpiece.

[0003] However, existing eddy current testing equipment will issue an alarm when it detects defective welded pipes. Operators will mark the defective welded pipes according to the alarm, which leads to high labor intensity and high labor costs. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an eddy current flaw detection device for welded pipes, which can automatically mark defective welded pipes, reduce labor intensity, and save labor costs.

[0005] An eddy current flaw detection device for welded pipes according to an embodiment of the present invention includes: a conveying mechanism for conveying welded pipes, including a frame, a first conveying roller group and a second conveying roller group disposed on the frame; a flaw detection mechanism for performing eddy current flaw detection on the welded pipes, including an eddy current detector, a first support, and an annular probe disposed on the first support, the first support being disposed on the frame, the annular probe being electrically connected to the eddy current detector, and the annular probe having an inner hole for accommodating the movement of the welded pipe; and a marking mechanism for marking defective welded pipes, including a second support, a nozzle disposed on the second support, a controller for controlling the spraying of liquid from the nozzle, and a liquid storage tank connected to the nozzle, the second support being disposed on the frame, the controller being electrically connected to the eddy current detector, and the nozzle being used to spray liquid onto the defective welded pipes.

[0006] An eddy current flaw detection device for welded pipes according to an embodiment of the present invention has at least the following beneficial effects:

[0007] 1. This utility model, by setting up a conveying mechanism and a flaw detection mechanism, allows the first and second conveying roller sets to convey the welded pipe. During the conveying process, the welded pipe passes through the inner hole of the annular probe, which performs electromagnetic induction on the welded pipe. The annular probe transmits the signal to the eddy current testing machine, which judges the defects of the welded pipe based on the changes in the electromagnetic signal. Thus, the defects of the welded pipe can be automatically detected.

[0008] 2. By setting up a marking mechanism, when the eddy current testing machine detects a defective welded pipe, the eddy current testing machine transmits a signal to the controller, and the controller controls the nozzle to spray the marking liquid in the storage tank into the welded pipe. Thus, the defective welded pipe can be automatically marked, reducing labor intensity and saving labor costs.

[0009] According to some embodiments of the present invention, the second bracket includes a slide rod, a mounting plate sleeved on the slide rod, and a locking bolt for fixing the mounting plate. The slide rod is vertically arranged on the frame, and the nozzle, the controller, and the liquid storage tank are all arranged on the mounting plate.

[0010] The advantage is that by setting up a sliding rod, mounting plate, and locking bolts, loosening the locking bolts allows the mounting plate to move up and down along the sliding rod or rotate around the sliding rod by a certain angle. Then, tightening the locking bolts fixes the mounting plate in place. This allows for adjustment of the nozzle position, thereby enabling the testing of welded pipes of different diameters.

[0011] According to some embodiments of the present invention, the first conveying roller group includes two first rollers and a first motor that drives the first rollers to rotate, with the two first rollers respectively arranged on both horizontal sides of the welded pipe.

[0012] The advantage is that by setting a first roller and a first motor, the first motor drives the first roller to rotate, and the two first rollers respectively abut against both sides of the welded pipe, thereby realizing the automatic conveying of the welded pipe and limiting the two sides of the welded pipe.

[0013] According to some embodiments of the present invention, the second conveying roller group includes two second rollers and a second motor for driving the second rollers to rotate, with the two second rollers respectively disposed on the upper and lower sides of the welded pipe.

[0014] The advantage is that by setting a second roller and a second motor, the second motor drives the second roller to rotate, and the two second rollers abut against the upper and lower sides of the welded pipe respectively, thereby improving the stability of the welded pipe during transportation and limiting the upper and lower sides of the welded pipe.

[0015] According to some embodiments of the present invention, a translation component is provided between the frame and the first support, and a lifting component is provided between the first support and the annular probe.

[0016] The advantage is that by setting up a translation component and a lifting component, the translation component can drive the first support to move horizontally, so that the first support moves closer to or away from the welded pipe. The first support drives the annular probe to move closer to or away from the welded pipe. The lifting component can drive the annular probe to move up and down. Thus, the position of the annular probe can be adjusted to meet the needs of inspecting welded pipes of different sizes.

[0017] According to some embodiments of the present invention, the translation component includes a first guide rail, a first slider slidably connected to the first guide rail, and a first adjusting screw that drives the first slider to move. Therefore, the first guide rail is disposed on the frame, and the first support is disposed on the first slider.

[0018] The advantage is that by setting a first guide rail, a first slider, and a first adjusting screw, rotating the first adjusting screw can move the first slider along the first guide rail. The first slider drives the first bracket and the annular probe to move, thereby achieving precise adjustment and strong guidance.

[0019] According to some embodiments of the present invention, the lifting assembly includes a second guide rail, a second slider slidably connected to the second guide rail, and a second adjusting screw that drives the second slider to move. The second guide rail is disposed on the first bracket, and the annular probe is disposed on the second slider.

[0020] The advantages are: by setting a first guide rail, a second slider, and a second adjusting screw, rotating the second adjusting screw can move the second slider along the second guide rail, and the second slider drives the annular probe to rise and fall, making adjustment simple and guidance precise.

[0021] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of an eddy current flaw detection device for welded pipes according to an embodiment of the present utility model;

[0024] Figure 2 for Figure 1 Another structural diagram of the flaw detection mechanism and marking mechanism.

[0025] Reference numerals: 100-Frame, 110-First conveyor roller group, 120-Second conveyor roller group, 130-Flaw detection mechanism, 140-Eddy current testing machine, 150-First support, 160-Annular probe, 170-Marking mechanism, 180-Second support, 190-Nozzle, 200-Controller, 210-Storage tank, 220-Slide bar, 230-Mounting plate, 240-Locking bolt, 250-First roller, 260-First motor, 270-Second roller, 280-Second motor, 290-Translation assembly, 300-Lifting assembly, 310-First guide rail, 320-First slider, 330-First adjusting screw, 340-Second guide rail, 350-Second slider, 360-Second adjusting screw. Detailed Implementation

[0026] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0027] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" and "second" are mentioned, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the order of the indicated technical features.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation, connection, and linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] The following description, in conjunction with the accompanying drawings, describes an eddy current testing device for welded pipes according to an embodiment of the present invention.

[0031] Reference Figure 1 The present invention aims to provide an embodiment of an eddy current flaw detection device for welded pipes.

[0032] Reference Figure 1 and Figure 2 An eddy current flaw detection device for welded pipe according to an embodiment of the present invention includes a conveying mechanism, a flaw detection mechanism 130 and a marking mechanism 170.

[0033] The conveying mechanism is used to convey welded pipes and includes a frame 100, a first conveying roller group 110 and a second conveying roller group 120 disposed on the frame 100.

[0034] Structurally, the flaw detection mechanism 130 is used to perform eddy current flaw detection on the welded pipe, including an eddy current testing machine 140, a first support 150, and an annular probe 160 set on the first support 150. The first support 150 is set on the frame 100. The annular probe 160 is electrically connected to the eddy current testing machine 140. The annular probe 160 is provided with an inner hole for accommodating the movement of the welded pipe.

[0035] Furthermore, the marking mechanism 170 is used to mark the defective welded pipes and includes a second support 180, a nozzle 190 disposed on the second support 180, a controller 200 for controlling the spraying of liquid from the nozzle 190, and a storage tank 210 connected to the nozzle 190. The second support 180 is disposed on the frame 100, the controller 200 is electrically connected to the eddy current testing machine 140, and the nozzle 190 is used to spray liquid onto the defective welded pipes.

[0036] Specifically, when the first conveying roller group 110 and the second conveying roller group 120 convey the welded pipe, the welded pipe passes through the inner hole of the annular probe 160. The annular probe 160 performs electromagnetic induction on the welded pipe and transmits the signal to the eddy current detector 140. The eddy current detector 140 judges the defects of the welded pipe based on the change of the electromagnetic signal. When the eddy current detector 140 detects a defective welded pipe, it transmits the signal to the controller 200. The controller 200 controls the nozzle 190 to spray the marking liquid in the storage tank 210 into the welded pipe. Thus, defective welded pipes can be automatically marked, reducing labor intensity and saving labor costs.

[0037] In some preferred embodiments, the second bracket 180 includes a slide bar 220, a mounting plate 230 sleeved on the slide bar 220, and locking bolts 240 for fixing the mounting plate 230. The slide bar 220 is vertically mounted on the frame 100, and the nozzle 190, controller 200, and liquid storage tank 210 are all mounted on the mounting plate 230.

[0038] It is understandable that by setting up the slide bar 220, the mounting plate 230, and the locking bolt 240, loosening the locking bolt 240 allows the mounting plate 230 to move up and down along the slide bar 220 or rotate around the slide bar 220 by a certain angle. Then, tightening the locking bolt 240 fixes the mounting plate 230, thereby allowing the position of the nozzle 190 to be adjusted, thus enabling the testing of welded pipes of different diameters.

[0039] In some preferred embodiments, the first conveying roller group 110 includes two first rollers 250 and a first motor 260 for driving the first rollers 250 to rotate, with the two first rollers 250 respectively disposed on both horizontal sides of the welded pipe.

[0040] It is understandable that by setting a first roller 250 and a first motor 260, the first motor 260 drives the first roller 250 to rotate, and the two first rollers 250 respectively abut against the two sides of the welded pipe, thereby realizing the automatic conveying of the welded pipe and limiting the two sides of the welded pipe.

[0041] In some preferred embodiments, the second conveying roller group 120 includes two second rollers 270 and a second motor 280 for driving the second rollers 270 to rotate. The two second rollers 270 are respectively disposed on the upper and lower sides of the welded pipe.

[0042] It is understandable that by setting a second roller 270 and a second motor 280, the second motor 280 drives the second roller 270 to rotate, and the two second rollers 270 respectively abut against the upper and lower sides of the welded pipe, thereby improving the stability of the welded pipe during transportation and limiting the upper and lower sides of the welded pipe.

[0043] In some preferred embodiments, a translation component 290 is provided between the frame 100 and the first support 150, and a lifting component 300 is provided between the first support 150 and the annular probe 160.

[0044] It is understandable that by setting up the translation component 290 and the lifting component 300, the translation component 290 can drive the first support 150 to translate, so that the first support 150 moves closer to or away from the welded pipe. The first support 150 drives the annular probe 160 to move closer to or away from the welded pipe. The lifting component 300 can drive the annular probe 160 to move up and down, thereby adjusting the position of the annular probe 160 to meet the needs of inspecting welded pipes of different sizes.

[0045] In some preferred embodiments, the translation component 290 includes a first guide rail 310, a first slider 320 slidably connected to the first guide rail 310, and a first adjusting screw 330 for driving the first slider 320 to move. The first guide rail 310 is disposed on the frame 100, and the first support 150 is disposed on the first slider 320.

[0046] It is understandable that by setting the first guide rail 310, the first slider 320 and the first adjusting screw 330, rotating the first adjusting screw 330 can make the first slider 320 move along the first guide rail 310. The first slider 320 drives the first bracket 150 and the annular probe 160 to move, thereby achieving precise adjustment and strong guidance.

[0047] In some preferred embodiments, the lifting assembly 300 includes a second guide rail 340, a second slider 350 slidably connected to the second guide rail 340, and a second adjusting screw 360 that drives the second slider 350 to move. The second guide rail 340 is disposed on the first bracket 150, and the annular probe 160 is disposed on the second slider 350.

[0048] It is understandable that by setting the first guide rail 310, the second slider 350, and the second adjusting screw 360, rotating the second adjusting screw 360 can move the second slider 350 along the second guide rail 340. The second slider 350 drives the annular probe 160 to rise and fall, making adjustment simple and guidance precise.

[0049] In the description of this specification, references to terms such as "an embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0050] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. An eddy current flaw detection device for welded pipes, characterized in that, include: A conveying mechanism for conveying welded pipes includes a frame (100), a first conveying roller group (110) and a second conveying roller group (120) disposed on the frame (100). The flaw detection mechanism (130) is used to perform eddy current flaw detection on the welded pipe, including an eddy current testing machine (140), a first support (150), and an annular probe (160) disposed on the first support (150). The first support (150) is disposed on the frame (100). The annular probe (160) is electrically connected to the eddy current testing machine (140). The annular probe (160) is provided with an inner hole for accommodating the movement of the welded pipe. The marking mechanism (170) for marking defective welded pipes includes a second support (180), a nozzle (190) disposed on the second support (180), a controller (200) for controlling the spraying of liquid by the nozzle (190), and a storage tank (210) connected to the nozzle (190). The second support (180) is disposed on the frame (100). The controller (200) is electrically connected to the eddy current testing machine (140). The nozzle (190) is used to spray liquid on the defective welded pipes.

2. The eddy current flaw detection device for welded pipes according to claim 1, characterized in that, The second bracket (180) includes a slide rod (220), a mounting plate (230) sleeved on the slide rod (220), and a locking bolt (240) for fixing the mounting plate (230). The slide rod (220) is vertically arranged on the frame (100). The nozzle (190), the controller (200), and the liquid storage tank (210) are all arranged on the mounting plate (230).

3. The eddy current flaw detection device for welded pipes according to claim 1, characterized in that, The first conveying roller group (110) includes two first rollers (250) and a first motor (260) that drives the first rollers (250) to rotate. The two first rollers (250) are respectively arranged on both sides of the welded pipe.

4. The eddy current flaw detection device for welded pipes according to claim 1, characterized in that, The second conveying roller group (120) includes two second rollers (270) and a second motor (280) that drives the second rollers (270) to rotate. The two second rollers (270) are respectively arranged on the upper and lower sides of the welded pipe.

5. The eddy current flaw detection device for welded pipes according to claim 1, characterized in that, A translation component (290) is provided between the frame (100) and the first support (150), and a lifting component (300) is provided between the first support (150) and the annular probe (160).

6. The eddy current testing device for welded pipes according to claim 5, characterized in that, The translation component (290) includes a first guide rail (310), a first slider (320) slidably connected to the first guide rail (310), and a first adjusting screw (330) that drives the first slider (320) to move. Therefore, the first guide rail (310) is provided on the frame (100), and the first bracket (150) is provided on the first slider (320).

7. The eddy current flaw detection device for welded pipes according to claim 5, characterized in that, The lifting assembly (300) includes a second guide rail (340), a second slider (350) slidably connected to the second guide rail (340), and a second adjusting screw (360) that drives the second slider (350) to move. The second guide rail (340) is disposed on the first bracket (150), and the annular probe (160) is disposed on the second slider (350).

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