Pipeline nondestructive testing device

Abstract

The invention relates to a pipeline nondestructive testing device. The pipeline nondestructive testing device comprises a shell, an eddy current flaw detection module and a lifting module. A sliding module is arranged on the shell, the shell can slide on the pipeline through the sliding module, and a detection window is formed in the side, facing the pipeline, of the shell. The eddy current flaw detection module and the lifting module are both arranged in the shell, and the lifting module can drive the eddy current flaw detection module to penetrate through the detection window. The detection window is arranged on the shell, and the eddy current flaw detection module is driven by the lifting module to move after detection, so that the eddy current flaw detection module can extend out of the shell through the detection window, the distance between the eddy current flaw detection module and the to-be-detected pipeline is adjusted, and the flaw detection result is more accurate.

Description

Technical Field

[0001] The present invention relates to the field of pipeline detection, and in particular to a pipeline non-destructive detection device. Background Art

[0002] Eddy current testing is a non-contact testing method that uses electromagnetic induction between metals and an electromagnetic field. It is one of the most widely used non-destructive testing methods in industry. When alternating current is applied to a coil, the current remains constant under certain conditions. If the coil is placed close to the workpiece being tested, like a boat in water, eddy currents are induced within the workpiece. These eddy currents cause the coil current to change. Because the magnitude of these eddy currents varies depending on the presence of defects within the workpiece, the change in coil current can indicate the presence of defects.

[0003] At present, for flaw detection on the surface of pipelines, eddy current detectors available on the market are generally used, and operators perform mobile detection by holding the detector in their hands. During the detection process, the detection surface usually needs to be close to the axle surface, and the operator needs to hold the detector against the axle for a long time for mobile detection, which is labor-intensive. In addition, the position of the detection unit in the current detector is fixed. Since the axle or key surface is a curved surface, and the surface may be concave or have other complex structures, the distance between the detection unit and the pipeline surface cannot be adjusted when detecting these areas, and effective detection cannot be achieved, and its use has certain limitations. Summary of the Invention

[0004] (1) Technical issues to be resolved

[0005] The present invention provides a pipeline non-destructive testing device, which aims to solve the technical problem in the prior art that the distance between a detection unit and a pipeline surface cannot be adjusted.

[0006] (2) Technical solution

[0007] In order to solve the above problems, the present invention provides a pipeline non-destructive testing device, which includes: a housing, an eddy current flaw detection module and a lifting module;

[0008] The housing is provided with a sliding module, and the housing can slide on the pipeline through the sliding module. A detection window is provided on a side of the housing facing the pipeline;

[0009] The eddy current flaw detection module and the lifting module are both arranged in the shell, and the lifting module can drive the eddy current flaw detection module to pass through the detection window.

[0010] Preferably, the lifting module includes a screw, a slider and a guide rod;

[0011] The screw rod and the guide rod are both arranged in the housing, and the screw rod and the guide rod are parallel;

[0012] The eddy current flaw detection module is fixed on the slider, and the slider is sleeved on the guide rod and the screw rod. The slider can slide along the guide rod, and an internal threaded hole that cooperates with the screw rod is provided on the slider. The screw rod can rotate to drive the slider to move along the guide rod.

[0013] Preferably, the first end of the screw rod is located outside the housing, and a knob is fixedly provided on the first end of the screw rod.

[0014] Preferably, a driving element is provided on the housing, the driving element is connected to one end of the screw, and the driving element can drive the screw to rotate.

[0015] Preferably, a pair of supporting parts are provided on the side of the shell facing the pipeline, and the supporting parts are provided with arc-shaped surfaces for contacting the pipeline, and the center lines of the arc-shaped surfaces on the two supporting parts are collinear.

[0016] Preferably, a roller is rotatably provided on the arcuate surface of the support portion.

[0017] Preferably, a handle is provided on the top of the housing.

[0018] Preferably, anti-roll bar groups are provided on opposite sides of the housing, and the anti-roll bar groups form a certain angle with the side surfaces of the housing.

[0019] Preferably, the anti-roll bar assembly is a telescopic bar.

[0020] (3) Beneficial effects

[0021] The present invention provides a detection window on the housing. After detection, the lifting module is used to drive the eddy current flaw detection module to move, thereby allowing the eddy current flaw detection module to extend out of the housing through the detection window. The distance between the eddy current flaw detection module and the pipeline to be inspected can be adjusted, resulting in more accurate flaw detection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a front view of the pipeline nondestructive testing device of the present invention.

[0023] [Description of Reference Numerals]

[0024] 1: Housing; 11: Detection window; 12: Support portion; 121: Arc surface; 13: Roller; 14: Handle; 15: Anti-roll bar assembly;

[0025] 2: Eddy current flaw detection module;

[0026] 3: lifting module; 31: screw; 32: slider; 33: guide rod; 34: knob. DETAILED DESCRIPTION

[0027] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation methods in conjunction with the accompanying drawings.

[0028] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0029] In addition, the terms "first," "second," and so on, used in this disclosure are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referenced. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this disclosure, "plurality" means at least two, such as two or three, unless otherwise specifically defined.

[0030] In the present invention, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0031] The present invention provides a pipeline nondestructive testing device, comprising: a housing 1, an eddy current flaw detection module 2, and a lifting module 3. The housing 1 is provided with a sliding module, which enables the housing 1 to slide on the pipeline. A detection window 11 is provided on the side of the housing 1 facing the pipeline. The eddy current flaw detection module 2 and the lifting module 3 are both disposed within the housing 1, and the lifting module 3 is capable of driving the eddy current flaw detection module 2 through the detection window 11. The detection window of the device is brought close to the pipeline surface, and the eddy current flaw detection module 2 is then powered on. The operator then performs mobile flaw detection. When a component or critical surface recess is encountered, the lifting module 3 is used to adjust the eddy current flaw detection module 2 out of the detection window, or to adjust its height, thereby adjusting the distance between the eddy current flaw detection module 2 at the recess and the flaw detection surface. The entire device can flexibly adjust the distance between the flaw detection unit and the pipeline surface according to actual conditions, resulting in more accurate flaw detection results. It should be noted that the above-mentioned eddy current flaw detection module 2 is an existing technology, which is almost mature at present. Therefore, its specific structure and principle are not described in detail again.

[0032] In the above scheme, a detection window is set on the outer shell, and the lifting module 3 is used to move the eddy current flaw detection module 2 after detection, so that the eddy current flaw detection module 2 can extend out of the outer shell through the detection window, and then the distance between the eddy current flaw detection module 2 and the pipeline to be inspected is adjusted, so that the flaw detection result is more accurate.

[0033] In a preferred embodiment, a connector is provided on one side of the slider 32, and the eddy current testing module 2 is connected to the lower portion of the connector. In this solution, the connector design facilitates assembly of the eddy current testing module 2. The connector can be a conventional clamping assembly to hold the eddy current testing module 2, or other structural components with similar functions.

[0034] Furthermore, the lifting module 3 includes a screw 31, a slider 32, and a guide rod 33. Both the screw 31 and the guide rod 33 are disposed within the housing 1, and are parallel to each other. The eddy current flaw detection module 2 is fixed to the slider 32, which is sleeved over the guide rod 33 and the screw 31. The slider 32 can slide along the guide rod 33. The slider 32 is provided with an internally threaded hole that mates with the screw 31, and the screw 31 can rotate to drive the slider 32 to move along the guide rod 33.

[0035] In this embodiment, the lifting module 3 adopts the structure of a screw 31 transmission pair. Specifically, when the screw 31 is rotated by an external force, the slider 32 will not rotate with it under the restriction of the guide rod 33, and will only move linearly along the screw 31, thereby driving the eddy current flaw detection module 2 to move up and down relative to the shell 1, that is, adjusting the position spacing of the eddy current flaw detection module 2 to the extended or retracted position of the detection window. The structural design is very reasonable and ingenious, and the operation is convenient and quick.

[0036] Furthermore, the first end of the screw 31 is located outside the housing, and a knob 34 is fixedly provided on the first end of the screw 31. The knob 34 facilitates the operator to apply a rotational force to the screw 31, thereby ensuring good rotation of the screw 31, that is, ensuring smooth up and down movement of the eddy current flaw detection module 2.

[0037] In other embodiments, a driving element is provided on the housing, connected to one end of the screw 31, and can drive the screw 31 to rotate. The driving element can be a motor, which drives the screw 31 to rotate, thereby automatically adjusting the eddy current flaw detection module 2 to move up and down.

[0038] In addition, a pair of support parts 12 are provided on the side of the shell facing the pipeline, and an arc-shaped surface 121 for contacting the pipeline is provided on the support part 12, and the center lines of the arc-shaped surfaces 121 on the two support parts 12 are collinear. Rollers 13 are rotatably provided on the arc-shaped surface 121 of the support part 12. In this embodiment, the inner arc surface of the support part 12 is wrapped around the side of the outer surface of the pipeline, and at the same time, the roller 13 is in (rolling) contact with the surface of the part. When operating, the operator can apply a certain pressure to the shell 1 so that the roller 13 is in close contact with the surface of the part, that is, the entire device can be supported on the surface of the part, and push flaw detection can be performed, which saves time and effort, and improves the disadvantage that the traditional detector requires the operator to operate continuously in mid-air.

[0039] In a preferred embodiment, a handle 14 is provided on the top of the housing 1. The handle 14 is provided to facilitate transportation by the user.

[0040] Finally, anti-roll bar assemblies 15 are installed on opposite sides of the housing 1. These anti-roll bar assemblies 15 form a predetermined angle with the sides of the housing 1. When the pipeline nondestructive testing device of the present invention is moved over a workpiece, if an unexpected situation occurs and the housing 1 tips over, the anti-roll bar assemblies 15 on the housing 1 can contact the ground during the roll, preventing the housing 1 from completely tipping over and damaging the components within the housing 1. The anti-roll bar assemblies 15 are telescopic, meaning their length can be adjusted based on the size of the workpiece and the operating conditions without affecting the normal performance of the inspection.

[0041] It should be understood that the above description of the specific embodiments of the present invention is merely for the purpose of illustrating the technical approach and features of the present invention. Its purpose is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly. However, the present invention is not limited to the above-described specific embodiments. Any changes or modifications made within the scope of the claims of the present invention are intended to be covered by the scope of protection of the present invention.

Claims

1. A pipeline nondestructive testing device, characterized in that: The pipeline non-destructive testing device comprises: a housing (1), an eddy current flaw detection module (2) and a lifting module (3); The housing (1) is provided with a sliding module, and the housing (1) can slide on the pipeline through the sliding module. A detection window (11) is provided on the side of the housing (1) facing the pipeline; The eddy current flaw detection module (2) and the lifting module (3) are both arranged in the housing (1), and the lifting module (3) can drive the eddy current flaw detection module (2) to pass through the detection window (11).

2. The pipeline nondestructive testing device according to claim 1, characterized in that: The lifting module (3) comprises a screw (31), a slider (32) and a guide rod (33); The screw rod (31) and the guide rod (33) are both arranged in the housing (1), and the screw rod (31) and the guide rod (33) are parallel; The eddy current flaw detection module (2) is fixed on the slider (32), the slider (32) is sleeved on the guide rod (33) and the screw rod (31), the slider (32) can slide along the guide rod (33), and the slider (32) is provided with an internal threaded hole that cooperates with the screw rod (31), and the screw rod (31) can rotate to drive the slider (32) to move along the guide rod (33).

3. The pipeline nondestructive testing device according to claim 2, characterized in that: The first end of the screw rod (31) is located outside the housing, and a knob (34) is fixedly provided on the first end of the screw rod (31).

4. The pipeline nondestructive testing device according to claim 2, characterized in that: A driving element is provided on the housing, and the driving element is connected to one end of the screw rod (31). The driving element can drive the screw rod (31) to rotate.

5. The pipeline nondestructive testing device according to any one of claims 1 to 4, characterized in that: A pair of support parts (12) are provided on the side of the housing facing the pipeline, and the support parts (12) are provided with arc-shaped surfaces (121) for contacting the pipeline, and the center lines of the arc-shaped surfaces (121) on the two support parts (12) are collinear.

6. The pipeline nondestructive testing device according to claim 5, characterized in that: A roller (13) is rotatably provided on the arcuate surface (121) of the support portion (12).

7. The pipeline nondestructive testing device according to any one of claims 1 to 4, characterized in that: A handle (14) is provided on the top of the housing (1).

8. The pipeline nondestructive testing device according to any one of claims 1 to 4, characterized in that: Anti-roll bar groups (15) are provided on opposite sides of the housing (1), and the anti-roll bar groups (15) form a certain angle with the side surfaces of the housing (1).

9. The pipeline nondestructive testing device according to claim 8, characterized in that: The anti-roll bar group (15) is a telescopic bar.

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