Probe capable of being adjusted on two sides and used for weld joint flaw detection and magnet yoke

Abstract

The utility model relates to a probe capable of being adjusted on two sides and used for welding seam flaw detection and a magnet yoke, which belong to the technical field of magnetic powder flaw detection, and realize double-side adjustment during welding seam flaw detection through an adjustable joint structure and an adjustable chamfering structure with a replaceable shape in combination with a joggle joint groove structure and an adjusting movable bolt, so as to improve the accuracy and reliability of welding seam flaw detection. The device is suitable for flaw detection of flat welds, fillet welds and pipe welds in various scenes, can effectively avoid error detection and missing detection, can improve the product quality, and reduces the safety accident risk.

Description

Technical Field

[0001] The utility model belongs to the technical field of magnetic particle flaw detection, and particularly relates to a probe and a yoke for weld flaw detection that can be adjusted on both sides. Background Art

[0002] Magnetic particle flaw detection is a flaw detection method that magnetizes a workpiece made of a magnetic material and uses the characteristic that the magnetic leakage energy at the defect part can adsorb magnetic powder to display the surface defects and near-surface defects of the detected object according to the distribution of magnetic powder. Magnetic particle testing is a commonly used method in non-destructive testing. In the inspection and testing of pressure pipelines, the commonly used magnetization method is the yoke method; the yoke method is to use the two magnetic poles of a portable electromagnetic yoke to contact the surface of the workpiece for local magnetization to detect defects perpendicular to the connection line of the two magnetic poles. The structure of the traditional yoke probe is mainly suitable for the flaw detection of flat or approximately flat workpieces, and for fillet weld workpieces, it can only be suitable for fillet welds with a large space, and it is inconvenient to perform reliable detection on parts with a small space or limited space. Therefore, it is very difficult to accurately judge whether the weld of the workpiece is qualified.

[0003] In the prior art, a new type of yoke for a flaw detector with the publication number of CN205982171U realizes the connection between components by means of a pin-hinged joint, and also connects the contact feet in contact with the workpiece through a threaded structure, so as to perform flaw detection operations on the workpiece. Summary of the Utility Model

[0004] The technical problem solved by the utility model is to overcome the problem of inconvenient detection of workpieces with a small space or limited space and uncertainty about whether the weld is qualified, and to provide a probe and a yoke for weld flaw detection that can be adjusted on both sides.

[0005] The technical solution adopted by the utility model is as follows:

[0006] The probe for weld flaw detection that can be adjusted on both sides described in the utility model includes a yoke, an adjustable joint structure is arranged below the yoke, and an adjustable chamfer structure is arranged below the adjustable joint structure; a rotation adjustment mechanism is arranged at the connection between the upper part of the adjustable joint structure and the lower part of the yoke, and a rotation adjustment mechanism is also arranged at the connection between the upper part of the adjustable chamfer structure and the lower part of the adjustable joint structure. The rotation adjustment mechanism includes a mortise joint groove structure and an adjustment movable bolt. The adjustment movable bolt is arranged in the middle of the mortise joint groove structure, and both the adjustable joint structure and the adjustable chamfer structure can rotate and adjust on both sides around the adjustment movable bolt.

[0007] The mortise joint groove structure includes a mutually matched mortise joint groove I and mortise joint groove II. The mortise joint groove I is arranged at the bottom ends of the yoke and the adjustable joint structure, and the mortise joint groove II is arranged at the upper ends of the adjustable joint structure and the adjustable chamfer structure.

[0008] A screw hole I is arranged in the middle of the mortise joint groove I, a screw hole II is arranged in the middle of the mortise joint groove II, and the positions of the screw hole I and the screw hole II correspond to each other.

[0009] The adjusting movable bolt passes through the screw hole I and the screw hole II.

[0010] The bottom end of the adjustable chamfering structure adopts a planar shape for flaw detection of planar workpieces.

[0011] The bottom end of the adjustable chamfering structure adopts a curved surface shape for flaw detection of curved surface workpieces.

[0012] The yoke for weld flaw detection that can be adjusted on both sides described in the utility model includes an iron core and a coil wound around the iron core. A probe for weld flaw detection that can be adjusted on both sides is installed below the iron core.

[0013] The utility model has the following beneficial effects:

[0014] The yoke of the utility model can be applied to various application scenarios such as flat welds, fillet welds, pipe welds, and I-shaped welds in small or limited spaces, with a wider application scenario than traditional yokes, improving the detection efficiency and detection rate. The adjustable chamfering structure in the utility model can be applicable to various weld angles and special environments where the weld is located, avoiding missed detections and improving the detectable range and product quality, and avoiding the occurrence of safety accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the whole of the utility model;

[0016] Figure 2 is a schematic diagram of the yoke;

[0017] Figure 3 is a schematic diagram of the adjustable joint structure;

[0018] Figure 4 is a schematic diagram of the adjustable chamfering structure;

[0019] Figure 5 is a schematic diagram of the application of flaw detection for flat welds;

[0020] Figure 6 is a schematic diagram of the application of flaw detection for pipe welds;

[0021] Figure 7 is a schematic diagram of the application of flaw detection for fillet welds.

[0022] Wherein: 1. Iron core; 2. Coil; 3. Adjustable joint structure; 4. Adjustable chamfering structure; 5. Adjusting movable bolt; 6. Tenon joint groove I; 7. Tenon joint groove II; 8. Screw hole I; 9. Screw hole II. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] Embodiment 1:

[0024] Such as Figures 1 to 4As shown, the probe for weld flaw detection that can be adjusted on both sides described in the utility model includes a yoke, an adjustable joint structure 3 is provided below the yoke, and an adjustable chamfer structure 4 is provided below the adjustable joint structure 3; a rotation adjustment mechanism is provided at the connection between the upper part of the adjustable joint structure and the lower part of the yoke, and a rotation adjustment mechanism is also provided at the connection between the upper part of the adjustable chamfer structure 4 and the lower part of the adjustable joint structure 3, the rotation adjustment mechanism includes a mortise and tenon groove structure and an adjusting movable bolt 5, the adjusting movable bolt 5 is provided in the middle of the mortise and tenon groove structure, and the adjustable joint structure 3 and the adjustable chamfer structure 4 can both be rotated and adjusted on both sides around the adjusting movable bolt 5.

[0025] The mortise and tenon groove structure includes matching mortise and tenon grooves I6 and II7. The mortise and tenon groove I6 is arranged at the bottom end of the yoke and the adjustable joint structure 3, and the mortise and tenon groove II7 is arranged at the upper end of the adjustable joint structure 3 and the adjustable chamfer structure 4.

[0026] A screw hole I8 is provided in the middle of the tenon groove I6, and a screw hole II9 is provided in the middle of the tenon groove II7, and the positions of the screw hole I8 and the screw hole II9 correspond to each other.

[0027] The adjusting movable bolt 5 passes through the screw hole I8 and the screw hole II9.

[0028] The bottom end of the adjustable chamfer structure 4 adopts a flat shape for flaw detection of flat workpieces.

[0029] The bottom end of the adjustable chamfer structure 4 adopts a curved surface shape for flaw detection of curved surface workpieces.

[0030] like Figure 5 As shown, when inspecting the weld of a flat weld workpiece, the utility model is used in the same manner as a conventional yoke probe. Since the external space of the flat weld is large and there are no obstacles, the utility model can be directly used to perform conventional magnetic particle inspection operations on the weld.

[0031] like Figure 6 As shown, for the pipe weld of a workpiece with a multi-row pipe structure, it is also inconvenient to detect the weld because the space between the pipes is small or limited. Similarly, the utility model detects it by adjusting the adjustable joint structure 3 and the adjustable chamfer structure 4. During the detection, the adjustable chamfer structures 4 on both sides rotate 90 degrees around the adjusting movable bolt 5. At this time, the adjustable chamfer structure 4 is perpendicular to the yoke body, and the two adjustable chamfer structures 4 penetrate between the two pipes to contact the workpiece and are respectively located on both sides of the weld to perform flaw detection operations on the weld.

[0032] like Figure 7As shown in the figure, for the fillet weld of the grooved workpiece, due to the small or limited space inside the groove, it is impossible to perform magnetic particle flaw detection on it using the method for detecting flat welds. Therefore, the present utility model detects it by adjusting the adjustable joint structure 3 and the adjustable chamfering structure 4. During detection, the adjustable chamfering structures 4 on both sides are adjusted. One adjustable chamfering structure 4 is adjusted to the left around the adjusting movable bolt 5, and the other adjustable chamfering structure 4 is adjusted to the right around the adjusting movable bolt 5. The two adjustable chamfering structures 4 are respectively in parallel contact with the workpieces on both sides of the weld, so as to detect the weld of the grooved workpiece.

[0033] Embodiment 2:

[0034] As Figure 1 shown, the magnetic yoke for bilateral adjustment for weld flaw detection of the present utility model includes an iron core 1 and a coil 2 wound around the iron core 1. A probe for bilateral adjustment for weld flaw detection is installed below the iron core 1. The magnetic yoke for bilateral adjustment for weld flaw detection of the present utility model is applied to the flaw detection of workpieces with various shapes such as flat welds, fillet welds, and pipe welds through the bilateral adjustment of the magnetic yoke probe. At the same time, it has good practicability for workpieces with small or limited detection space.

[0035] The above embodiments are only examples to illustrate the technical solutions of the present utility model, rather than limiting it. The present utility model can apply the magnetic yoke to various application scenarios such as flat welds, fillet welds, pipe welds, and I-shaped welds with small or limited space, with a wider application scenario than traditional magnetic yokes, improving the detection efficiency and detection rate. The adjustable chamfering structure in the present utility model can be applicable to various weld angles and special environments where the weld is located, avoiding missed detections and false detections, improving the detectable range and product quality, and avoiding the occurrence of safety accidents.

Claims

1. A probe for weld flaw detection that can be adjusted on both sides, comprising a magnetic yoke, characterized in that, An adjustable joint structure (3) is provided below the yoke, and an adjustable chamfer structure (4) is provided below the adjustable joint structure (3); a rotation adjustment mechanism is provided at the connection between the upper part of the adjustable joint structure (3) and the lower part of the yoke, and a rotation adjustment mechanism is also provided at the connection between the upper part of the adjustable chamfer structure (4) and the lower part of the adjustable joint structure (3). The rotation adjustment mechanism includes a mortise joint groove structure and an adjustment movable bolt (5). The adjustment movable bolt (5) is arranged in the middle of the mortise joint groove structure. Both the adjustable joint structure (3) and the adjustable chamfer structure (4) can be rotated and adjusted on both sides around the adjustment movable bolt (5).

2. The probe for weld flaw detection that can be adjusted on both sides according to claim 1, wherein The mortise joint groove structure includes a mutually matched mortise joint groove I (6) and mortise joint groove II (7). The mortise joint groove I (6) is arranged at the bottom ends of the yoke and the adjustable joint structure (3), and the mortise joint groove II (7) is arranged at the upper ends of the adjustable joint structure (3) and the adjustable chamfer structure (4).

3. The probe for weld flaw detection that can be adjusted on both sides according to claim 2, wherein A screw hole I (8) is arranged in the middle of the mortise joint groove I (6), and a screw hole II (9) is arranged in the middle of the mortise joint groove II (7). The positions of the screw hole I (8) and the screw hole II (9) correspond to each other.

4. The probe for weld flaw detection that can be adjusted on both sides according to claim 3, wherein, The adjustment movable bolt (5) passes through the screw hole I (8) and the screw hole II (9).

5. The probe for weld flaw detection that can be adjusted on both sides according to claim 1, wherein The bottom end of the adjustable chamfer structure (4) is a plane, which is used for flaw detection of flat workpieces.

6. The probe for weld flaw detection that can be adjusted on both sides according to claim 1, characterized in that, The bottom end of the adjustable chamfer structure (4) is an arc surface, which is used for flaw detection of arc surface workpieces.

7. A yoke for weld flaw detection that can be adjusted on both sides, comprising an iron core (1) and a coil (2) wound around the iron core (1), characterized in that, Below the iron core (1), a probe for weld flaw detection that can be adjusted on both sides as described in any one of claims 1 to 6 is installed.

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