Metal curved surface eddy current detection device and detection method thereof

Abstract

This invention discloses a metal curved surface eddy current detection device and method for eddy current detection on a curved metal surface (1) with concave and convex surfaces. It includes a detection device panel (2) and an array of eddy current detection sensor devices (3) disposed on the detection device panel (2), and a roller (21) disposed at the end of the detection device panel (2) for moving the detection device. The key feature is that magnetizers (4) are disposed between several sensors (31) of the array of eddy current detection sensor devices (3). This achieves large-area uniform magnetization detection without generating a detection blind zone.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of nondestructive testing, in particular to a metal surface detection device and method, and more particularly to a metal curved surface eddy current detection device and method. BACKGROUND

[0002] Metal materials are widely used in modern industrial equipment, and the quality requirements are also increasingly high. Metal materials are also widely used in military equipment, and the quality guarantee is the security of the military equipment. Many metal devices are irregular in shape. In order to ensure the quality of metal devices, nondestructive testing methods are usually used. However, many metal devices are irregular in shape, such as concave-convex arc surfaces, which brings certain difficulty to the nondestructive testing, such as the lift-off effect in electromagnetic eddy current nondestructive testing. In addition, many metal devices in service are irregular in shape, which makes it difficult to detect a large area, and the operation is not convenient, and the work efficiency is also very low.

[0003] For example, the launching device of a warship aircraft carrier and an electromagnetic gun, the scale of the metal device in the system equipment is large, and the irregular shaped metal curved surface makes it difficult to achieve large area detection and repair. In addition, the objective environment is harsh, and it is necessary to improve the large area nondestructive testing of the launching device, improve the work efficiency and accuracy of the repair operators, and ensure the safe operation of the military equipment.

[0004] In view of the above shortcomings, the present application adopts the following technical scheme. SUMMARY

[0005] The purpose of the present application is to provide a metal curved surface eddy current detection device and method, and the technical scheme is as follows:

[0006] A metal curved surface eddy current detection device for detecting the eddy current of a concave-convex arc metal surface (1) includes a detection device panel (2), an array eddy current detection sensor device (3) arranged on the detection device panel (2), and a roller (21) arranged at the end of the detection device panel (2) for moving the detection device. The array eddy current detection sensor device (3) is characterized in that a magnetizer (4) is arranged between the plurality of sensors (31).

[0007] The magnetizer (4) is arranged in a long strip shape and is fixed horizontally on the detection device panel (2) at the middle of the side close to the detection object in the detection device detection movement direction, flush with the detection device panel (2). The plurality of sensors (31) form two rows in front and back in the detection device detection movement direction, are installed on the side close to the detection object of the detection device panel (2), and are symmetrically or asymmetrically arranged on both sides of the magnetizer (4). The large area uniform magnetization detection is realized without generating a detection blind area.

[0008] Further, the detection device panel (2) is made of semi-flexible material, and the concave-convex arc of the detection device panel (2) is adjusted when detecting different concave-convex arc-shaped metal surfaces.

[0009] Further, the detection device panel (2) is made of semi-flexible material, and the concave-convex arc of the detection device panel (2) is adjusted when detecting different concave-convex arc-shaped metal surfaces.

[0010] Further, the detection device panel (2) is made of semi-flexible material, and the concave-convex arc of the detection device panel (2) is adjusted when detecting different concave-convex arc-shaped metal surfaces.

[0011] The application also discloses a metal curved surface eddy current detection method, which is characterized by using the detection device, and the specific method steps are as follows:

[0012] a. Fixing the arc of the detection panel: the arc of the detection device panel is adjusted according to the concave-convex arc surface of the metal curved surface of the detected object;

[0013] b. Non-destructive detection: the eddy current detection device moves on the metal surface in the transverse direction of the sensor arrangement for detection;

[0014] c. Detection data storage: the detection signal is transmitted to the eddy current detection instrument for analysis, processing and storage.

[0015] In addition, the application also discloses a metal curved surface eddy current detection probe, which is used for eddy current detection of a surface concave-convex arc-shaped metal surface (1), and is connected to a detection instrument through a wire or wirelessly, and comprises a handle (11), and is characterized by further comprising the detection device (10) described above. For example, the detection device (10) is used for moving detection of the inner surface of a rail electromagnetic gun (5), and the detection device panel (2) of the detection device (10) is adjusted to a corresponding curved surface before detection, so that the detection device panel (2) is adapted to the arc surface of the metal protrusion of the inner surface of the rail electromagnetic gun. For another example, the detection device (10) is used for detection of a hook (6) of a catapult of an aircraft carrier, and the detection device panel (2) of the detection device (10) is adjusted to adapt to the plane and different arc surfaces of the hook (6) of the catapult.

[0016] For example, in the use of the inner wall detection of the rail electromagnetic gun, the arc surface of the detection device panel is adjusted to adapt to the inner wall surface of the rail electromagnetic gun, and the detection device is slid by the handle. The inner wall surface of the rail electromagnetic gun is a curved surface with a fixed arc. For another example, in the detection of the complex structure of the catapult of the aircraft carrier, such as the hook of the catapult, the arc of the curved surface changes irregularly from a plane to a first arc surface and then to a second arc surface. In the detection, the arc of the detection device panel of the detection device is adjusted from a plane to a first arc surface and then to a second arc surface in the process of moving detection, so that the detection device panel is most closely fitted to the detection curved surface, and the different structure surfaces of the hook of the catapult are subjected to electromagnetic eddy current non-destructive detection of defects and damages such as cracks and fatigue stress.

[0017] According to the above technical scheme, the present application has the following beneficial effects:

[0018] Firstly, the metal curved surface eddy current detection device of the present application is provided with two rows of sensors in the moving direction of the detection device, which are symmetrically or asymmetrically arranged on the two sides of the magnetizer, so that the large-area uniform magnetization detection is realized, and the blind area is reduced.

[0019] Secondly, the metal curved surface eddy current detection device and the probe of the present application can realize the detection of different concave-convex curved surfaces by adjusting the curvature of the flexible probe detection panel of the detection device, such as the inner wall of the track of the electromagnetic gun, the detection of the convex curved surface, and the hook of the aircraft carrier launcher, which is suitable for the hook structure with multiple curvature combinations, so as to realize the safe eddy current nondestructive testing of various large metal devices, especially military devices. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 Fig. 1 is a structural schematic diagram of the detection device of the best embodiment of the present application;

[0021] Figure 2 Fig. 2 is a schematic diagram of the use state of the detection device of the best embodiment of the present application;

[0022] Figure 3 Fig. 3 is a schematic diagram of the use state of the detection device of the best embodiment of the present application;

[0023] Figure 4 Fig. 4 is a schematic diagram of the use state of the detection device of the best embodiment of the present application;

[0024] Figure 5 Fig. 5 is a schematic diagram of the use state of the detection device of the best embodiment of the present application;

[0025] Figure 6 Fig. 6 is a schematic diagram of the use state of the detection device of the best embodiment of the present application;

[0026] Figure 7 Fig. 7 is a structural schematic diagram of the detection probe of the best embodiment of the present application;

[0027] Figure 8 Fig. 8 is a schematic diagram of the use state of the detection probe of the best embodiment of the present application;

[0028] Figure 9 Fig. 9 is a schematic diagram of the use state of the detection probe of the best embodiment of the present application;

[0029] Figure 10 Fig. 10 is a structural schematic diagram of another embodiment of the detection device of the best embodiment of the present application. DETAILED DESCRIPTION

[0030] The present application will be further described below in combination with the drawings and specific embodiments.

[0031] As shown in Figure 1 A metal curved surface eddy current detection device for detecting the surface concave-convex arc-shaped metal surface 1, comprising a detection device panel 2, an arrayed eddy current detection sensor device 3 arranged on the detection device panel 2, and a roller 21 arranged at the end of the detection device panel 2 for moving the detection device, characterized in that a magnetizer 4 is arranged between the sensors 31 of the arrayed eddy current detection sensor device 3.

[0032] The magnetizer 4 is arranged in a long strip shape, fixed horizontally on the detection device panel 2 at the middle of the side close to the detection object in the detection device detection moving direction, flush with the detection device panel 2; the sensors 31 are arranged in two horizontal rows in the detection device detection moving direction, installed on the side close to the detection object of the detection device panel 2, symmetrically or asymmetrically arranged on both sides of the magnetizer 4. The large-area uniform magnetization detection is realized without generating a detection blind area.

[0033] As shown in Figures 2 to 6 The detection device panel 2 is made of semi-flexible material, and the concave-convex arc of the detection device panel 2 is adjusted when detecting different concave-convex arc-shaped metal surfaces.

[0034] The detection device panel 2 is arranged as a flexible plastic plate.

[0035] The magnetizer 4 is arranged as a flexible magnetic rubber fixed to the detection device panel 2.

[0036] The application also discloses a metal curved surface eddy current detection method, characterized by using the above detection device, and the specific method steps are as follows:

[0037] a. Fixing the arc of the detection panel: adjusting the arc of the detection device panel according to the concave-convex arc surface of the metal curved surface of the detected object;

[0038] b. Non-destructive testing: moving the eddy current detection device on the metal surface in the horizontal direction of the sensor arrangement for detection;

[0039] c. Detection data storage: transmitting the detection signal to the eddy current detection instrument for analysis, processing and storage.

[0040] As shown in Figure 7 The application also discloses a metal curved surface eddy current detection probe for detecting the surface concave-convex arc-shaped metal surface 1, connected to the detection instrument through wires or wirelessly, comprising a handle 11, characterized in that it further comprises the above detection device 10. And as shown in Figure 8 For moving detection of the inner surface of the track of the track electromagnetic gun 5, the detection device panel 2 of the detection device 10 is adjusted to the corresponding curved surface before detection, which is adapted to the arc surface of the metal protrusions of the inner surface of the track. And as shown in Figure 9In the middle, the detection device panel 2 of the detection device 10 is used to detect the hook 6 of the catapult in the aircraft carrier. The panel is adapted to the plane and different curvature surfaces of the catapult hook 6.

[0041] As attached Figure 8 and Figure 9 As shown, in the inspection of the inner wall of an electromagnetic railgun, the curved surface of the inspection device panel is adjusted to fit the inner wall of the railgun, and the inspection device is slidable by a handle. The inner wall of the railgun is a curved surface with a fixed curvature. In the inspection of complex structures such as catapult systems on warships and aircraft carriers, the curvature of the catapult hook varies irregularly, changing from a plane to a first curvature surface, and then to a second curvature surface. During the inspection in the X direction, the inspection device panel adjusts the curvature from a plane to the first curvature surface, and then to the second curvature surface, using the most closely fitting inspection surface to perform electromagnetic eddy current non-destructive testing of different structural surfaces of the catapult hook for defects such as cracks and fatigue stress.

[0042] And such as Figure 10 As shown in the figure, in another embodiment of the detection device, the sensors 31 of the detection device are arranged in a staggered manner, with the front and rear rows forming a triangular shape and staggered from each other. In the actual detection, the rear row of sensors will not be redundant.

[0043] The above is one embodiment of the present invention. Furthermore, it should be noted that any equivalent or simple variations made to the structure, features, and principles described in this patent concept are included within the scope of protection of this patent.

Claims

1. A metal curved surface eddy current testing device for detecting the inner wall surface of the electromagnetic railgun or the catapult hook in the catapult device of a naval aircraft carrier, comprising a testing device panel (2) and an array eddy current testing sensor device (3) arranged on the testing device panel (2), and a roller (21) arranged at the end of the testing device panel (2) for moving the testing device, characterized in that The magnetizer (4) is arranged between the array eddy current detection sensor devices (3) and is in the shape of a long strip, horizontally fixed on the middle of the side of the detection device panel (2) close to the detection object, flush with the detection device panel (2); the sensors (31) are arranged in two rows in the direction of the detection device panel (2) and are symmetrically or asymmetrically arranged on both sides of the magnetizer (4). The detection device panel (2) is made of semi-flexible material and can be adjusted to the concave-convex curvature when detecting different concave-convex curved metal surfaces. The detection device panel (2) is made of semi-flexible material and can be adjusted to the concave-convex curvature when detecting different concave-convex curved metal surfaces.

2. A metal curved surface eddy current testing device according to claim 1, characterized in that The detection device panel (2) is made of semi-flexible material and can be adjusted to the concave-convex curvature when detecting different concave-convex curved metal surfaces.

3. A metal curved surface eddy current testing device according to claim 1 or 2, characterized in that The detection device panel (2) is made of semi-flexible material and can be adjusted to the concave-convex curvature when detecting different concave-convex curved metal surfaces.

4. A method of metal curved surface eddy current testing, characterized in that The detection device panel (2) is made of semi-flexible material and can be adjusted to the concave-convex curvature when detecting different concave-convex curved metal surfaces. The detection device panel (2) is made of semi-flexible material and can be adjusted to the concave-convex curvature when detecting different concave-convex curved metal surfaces. The detection device panel (2) is made of semi-flexible material and can be adjusted to the concave-convex curvature when detecting different concave-convex curved metal surfaces. The detection device panel (2) is made of semi-flexible material and can be adjusted to the concave-convex curvature when detecting different concave-convex curved metal surfaces. The detection device panel (2) is made of semi-flexible material and can be adjusted to the concave-convex curvature when detecting different concave-convex curved metal surfaces.

5. A metal curved surface eddy current testing probe for eddy current testing of a surface uneven curved metal surface (1) connected to a testing instrument by a wire or wirelessly, comprising a handle (11), characterized in that The detection device panel (2) is made of semi-flexible material and can be adjusted to the concave-convex curvature when detecting different concave-convex curved metal surfaces. The detection device panel (2) is made of semi-flexible material and can be adjusted to the concave-convex curvature when detecting different concave-convex curved metal surfaces. The detection device panel (2) is made of semi-flexible material and can be adjusted to the concave-convex curvature when detecting different concave-convex curved metal surfaces. The detection device panel (2) is made of semi-flexible material and can be adjusted to the concave-convex curvature when detecting different concave-convex curved metal surfaces. The detection device panel (2) is made of semi-flexible material and can be adjusted to the concave-convex curvature when detecting different concave-convex curved metal surfaces. The detection device panel (2) is made of semi-flexible material and can be adjusted to the concave-convex curvature when detecting different concave-convex curved metal surfaces. The detection device panel (2) is made of semi-flexible material and can be adjusted to the concave-convex curvature when detecting different concave-convex curved metal surfaces. The detection device panel (2) is made of semi-flexible material and can be adjusted to the concave-convex curvature when detecting different concave-convex curved metal surfaces. The detection device panel (2) is made of semi-flexible material and can be adjusted to the concave-convex curvature when detecting different concave-convex curved metal surfaces. The detection device panel (2) is made of semi-flexible material and can be adjusted to the concave-convex curvature when detecting different concave-convex curved metal surfaces. The detection device panel (2) is made of semi-flexible material and can be adjusted to the concave-convex curvature when detecting different concave-convex curved metal surfaces. The detection device panel (2) is made of semi-flexible material and can be adjusted to the concave-convex curvature when detecting different concave-convex curved metal surfaces. The detection device panel (2) is made of semi-flexible material and can be adjusted to the concave-convex curvature when detecting different concave-convex curved metal surfaces. The detection device panel (2) is made of semi-flexible material and can be adjusted to the concave-convex curvature when detecting different concave-convex curved metal surfaces. The detection device panel (2) is made of semi-flex

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