Nondestructive testing device for magnetic powder

Abstract

The utility model relates to a nondestructive testing device for magnetic powder. The detection device comprises a magnetic powder detection body and two sets of inclined tripods which are symmetrically arranged, a supporting wheel frame is arranged at the bottom of each set of inclined tripods, a first transverse frame and a second transverse frame which are arranged up and down and parallel to each other are fixedly connected between the two sets of inclined tripods, and the two sets of inclined tripods are located at the two ends of the pressure container respectively. The first transverse frame and the second transverse frame are parallel to an axial welding seam on the pressure vessel, the magnetic powder detection body is slidably mounted on the first transverse frame above, and two metal magnet yoke columns of the magnetic powder detection body are in contact with the two sides of the welding seam of the pressure vessel respectively. According to the utility model, the magnetic powder detection body slides on the first transverse frame, so that the welding seam on the pressure container along the axial direction can be conveniently detected, and the magnetic powder detection body can be operated to slide by a single person, so that an operator can spray magnetic powder conveniently, the detection process becomes simple, and the operation can be completed by the single person.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic particle testing, in particular to a magnetic particle non-destructive testing device. Background Art

[0002] Pressure vessels for containing flammable and explosive gases belong to special equipment, which need to be strictly tested and tested to ensure that the pressure vessels put into use have no internal defects and guarantee safety during use.

[0003] Magnetic particle testing is one of the common non-destructive testing methods. It is based on the appearance of a "leakage magnetic field" at the defect of the workpiece and is marked with magnetic powder or a magnetic powder mixed solution, so that the position, shape and size of the defect can be observed. When a conventional magnetic particle non-destructive testing device detects the axial weld seam on a container, it is unable to well maintain the sliding of the testing device along the weld seam, and some testing processes require the cooperation of multiple people, making the testing steps cumbersome. Therefore, the utility model provides a new magnetic particle non-destructive testing device. Content of the Utility Model

[0004] The purpose of the utility model is to solve the deficiencies existing in the prior art and propose a magnetic particle non-destructive testing device, which can move the magnetic particle testing body along the axial weld seam on the pressure vessel to detect any position of the axial weld seam, and the moving detection is convenient.

[0005] To achieve the above purpose, the utility model provides a magnetic particle non-destructive testing device for detecting the axial weld seam on a pressure vessel. The testing device includes a magnetic particle testing body and two groups of symmetrically arranged inclined triangular frames. A support wheel frame is provided at the bottom of each group of inclined triangular frames. A first cross frame and a second cross frame are fixedly connected between the two groups of inclined triangular frames, which are arranged vertically and parallel to each other. The two groups of inclined triangular frames are respectively located at both ends of the pressure vessel, and both the first cross frame and the second cross frame are parallel to the axial weld seam on the pressure vessel. The magnetic particle testing body is slidably installed on the upper first cross frame, and the two metal yoke columns of the magnetic particle testing body are respectively in contact with both sides of the weld seam of the pressure vessel; an adjustment and limit mechanism of the magnetic particle testing body is provided on the lower second cross frame; an inclined support bracket is further provided on the second cross frame, and a traveling wheel is fixedly installed at the bottom end of the inclined support bracket.

[0006] Further technical solution of the utility model: The inclined tripod is an obtuse triangle bracket, one of the obtuse sides is the base frame, the first cross frame and the second cross frame are both arranged on the other obtuse side frame, the support wheel frame is connected to the base frame of the inclined tripod, two groups of support wheel frames are respectively arranged on the opposite sides of two groups of inclined tripods, and two groups of inclined tripods, two groups of support wheel frames and two cross frames enclose a space for erecting a pressure vessel, and both ends of the pressure vessel are respectively erected on two groups of support wheel frames.

[0007] Relatively preferred technical solution of the utility model: The magnetic particle detection body is rotatably connected to the first cross frame, the adjustment and limit mechanism includes a connecting rod frame fixed to the bottom of the magnetic particle detection body and an adjustment connecting rod movably installed on the second cross frame. A long sliding hole is opened at one end of the adjustment connecting rod away from the second cross frame. One end of the connecting rod frame away from the magnetic particle detection body is fixedly connected to the second cross frame through a fastening screw, and the fastening screw is inside the long sliding hole and slides along the long sliding hole in a loosened state for adjustment.

[0008] Relatively preferred technical solution of the utility model: The support wheel frame includes a first roller and a second roller arranged in parallel. The first roller is rotatably connected to one end of the inclined tripod adjacent to the second cross bar, and the second roller is installed on one end of the inclined tripod away from the second cross bar through a mounting plate. The mounting plate is connected to the bottom plate of the inclined tripod through a hinge member, and a limiting clamping member is slidably installed on the inclined tripod. When the limiting clamping member slides to the connection position between the mounting plate and the bottom plate frame, the mounting plate and the inclined frame of the inclined tripod are simultaneously clamped for limiting.

[0009] Relatively preferred technical solution of the utility model: The vertex angle of the inclined tripod is located outside the upper region of the bottom plate frame.

[0010] Relatively preferred technical solution of the utility model: A handle is fixedly connected to the side surface of the magnetic particle detection body.

[0011] Relatively preferred technical solution of the utility model: Two groups of diagonal bracing brackets are provided, and the two groups of diagonal bracing brackets are distributed at both ends of the second cross frame.

[0012] The utility model has the following beneficial effects:

[0013] The utility model designs an inclined tripod with a wheel body structure. There are two groups of inclined tripods, which are respectively located at both ends of the pressure vessel. A first cross frame and a second cross frame are fixedly connected between the two groups of inclined tripods, enabling the magnetic particle testing body to slide on the first cross frame, thus facilitating the detection of the axial weld seam on the pressure vessel. During the detection, a single person can operate the sliding of the magnetic particle testing body, making the two metal yoke columns of the magnetic particle testing body respectively contact both sides of the weld seam on the pressure vessel. The magnetic particle testing body can stop at any position, facilitating the operator to spray magnetic powder (dry magnetic powder or a mixed liquid containing magnetic powder / fluorescent magnetic powder), making the detection process simple and allowing a single person to complete the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a three-dimensional schematic diagram when the utility model is in use;

[0015] Figure 2 is Figure 1 a partial enlarged view of part A in

[0016] Figure 3 is a front schematic diagram when the utility model is in use;

[0017] Figure 4 is a side schematic diagram when the utility model is in use;

[0018] Figure 5 is an enlarged schematic diagram of the connection part between the magnetic particle testing body and the cross bar in the utility model.

[0019] Legend: 1. Pressure vessel; 2. Inclined tripod; 3. Support wheel frame; 300. First roller; 301. Second roller; 302. Mounting plate; 303. Hinge piece; 304. Limit card; 4. First cross frame; 5. Second cross frame; 6. Magnetic particle testing body; 600. Handle; 7. Diagonal brace; 8. Traveling wheel; 9. Linkage frame; 10. Adjusting link; 11. Fastening screw. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following further illustrates the utility model with reference to the drawings and embodiments. The attached Figures 1 to 5 are all drawings of the embodiments, which are drawn in a simplified manner and are only used to clearly and concisely illustrate the purpose of the embodiments of the utility model. The following technical solutions shown in the drawings are the specific solutions of the embodiments of the utility model and are not intended to limit the scope of the utility model to be protected. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model.

[0021] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for differential description and cannot be understood as indicating or implying relative importance.

[0022] A magnetic particle non-destructive testing device provided by the embodiment is used to detect the axial weld seam on a pressure vessel 1 as Figures 1 to 5 shown. The testing device includes a magnetic particle testing body 6 and two sets of symmetrically arranged inclined tripods 2. The side surface of the inclined tripod 2 is an obtuse triangle bracket, and one of its bottom sides is flush with the ground. A support wheel frame 3 is connected to the bottom side of each set of inclined tripods 2, and a placement area for the pressure vessel 1 is formed between the inclined tripod 2 and the support wheel frame 3. A first cross frame 4 and a second cross frame 5 are connected between the two sets of inclined tripods 2. The first cross frame 4 and the second cross frame 5 are arranged on the shorter hypotenuse of the inclined tripod 2, and the first cross frame 4 and the second cross frame 5 are arranged parallel to each other vertically. The magnetic particle testing body 6 is slidably installed on the first cross frame 4 and can rotate along the first cross frame 4. The magnetic particle testing body 6 uses a conventional magnetic particle testing instrument, and the magnetic particle testing instrument has two metal yoke columns to magnetize the workpiece, and then spraying magnetic powder can achieve magnetic particle testing.

[0023] In the embodiment, when in use, the magnetic particle non-destructive testing device is moved to one side of the pressure vessel 1. Both ends of the pressure vessel 1 are respectively located in the pressure vessel 1 placement areas of two groups of inclined tripods 2. At this time, both ends of the pressure vessel 1 are respectively supported by two groups of support wheel frames 3. The two groups of inclined tripods 2 are respectively located at both ends of the pressure vessel 1 to limit it. The whole pressure vessel 1 can be driven to move by the support wheel frames 3. The pressure vessel 1 here is generally of a cylindrical structure, or it can be of other shapes. The pressure vessel is horizontally placed between the inclined tripods 2. After the pressure vessel 1 is placed, the first cross frame 4 is aligned parallel to the weld seam along the axis on the pressure vessel 1. The two metal yoke columns of the magnetic particle detection body 6 respectively contact both sides of the weld seam on the pressure vessel 1, that is, the two metal yoke columns of the magnetic particle detection body 6 magnetize the pressure vessel 1, and cooperate with the operation of spraying magnetic powder, so as to complete the detection. When detecting, the magnetic particle detection body 6 can freely slide along the length direction of the first cross frame 4. A magnetic particle detection body adjustment mechanism is provided on the second cross frame 5 for adjusting the angle of the magnetic particle detection body 6, which can ensure that the two metal yoke columns of the magnetic particle detection body 1 can contact the weld seam on the pressure vessel 1 for detection.

[0024] In the embodiment, a magnetic particle non-destructive testing device provided is as Figures 1 to 4 shown. In order to facilitate the stable movement of the whole device, inclined support brackets 7 are respectively fixedly connected to the parts near both ends of the second cross frame 5. The bottom ends of the inclined support brackets 7 are fixedly installed with traveling wheels 8. The two groups of inclined tripods 2, the first cross frame 4, the second cross frame 5, and the two groups of inclined support brackets 7 and traveling wheels 8 form a stable traveling frame structure, enabling the whole magnetic particle non-destructive testing device to move freely in the factory. The two groups of inclined support brackets 7 are used to keep the structure of the magnetic particle non-destructive testing device stable (the center of gravity of the inclined tripod 2 is on the west side. Using the inclined support brackets 7 can assist in supporting the inclined tripod 2, thus forming a stable structure).

[0025] The limit adjustment mechanism of the magnetic particle detection body in the embodiment is as Figures 1 to 5 shown, including a connecting rod frame 9 fixedly connected to the bottom of the magnetic particle detection body 6 and an adjusting connecting rod 10 movably installed on the second cross frame 5. A long sliding hole is opened at one end of the adjusting connecting rod 10 away from the second cross frame 5. One end of the connecting rod frame 9 away from the magnetic particle detection body 6 is fixedly connected to the second cross frame 5 through a fastening screw 11. The fastening screw 11 is located inside the long sliding hole. By loosening the fastening screw 11, the magnetic particle detection body 6 can be rotated to adjust its angle, and after adjustment, the fastening screw 11 is tightened to form a stable triangular structure among the adjusting connecting rod 10, the second cross frame 5, and the magnetic particle detection body 6, so that the adjusting connecting rod 10 and the second cross frame 5 are fixed together to keep the magnetic particle detection body 6 at the required angle.

[0026] In one embodiment, the support wheel frame 3 on each triangular inclined tripod 2 includes a first roller 300 and a second roller 301 arranged in parallel. The first roller 300 is rotatably connected to one end of the inclined tripod 2 adjacent to the second cross bar 5, and the second roller 301 is installed at one end of the inclined tripod 2 away from the second cross bar 5 through a mounting plate 302. The mounting plate 302 is connected to the bottom plate of the inclined tripod 2 through a hinge member 303, and a limiting card member 304 is slidably installed on the inclined tripod 2. The limiting card member 304 can slide to the connection between the mounting plate 302 and the bottom plate frame. When the limiting card member 304 slides to the connection between the mounting plate 302 and the bottom plate frame, it is simultaneously stuck on the mounting plate 302 and the inclined frame of the inclined tripod 2, thereby restricting the relative rotation between the mounting plate 302 and the bottom plate frame.

[0027] When in use, the mounting plate 302 can be rotated outward. At this time, the second roller 301 is rotated to the outside. When the two inclined tripods 2 are respectively moved to both ends of the pressure vessel 1, then the mounting plate 302 is rotated back and closed along the hinge member 303. At this time, the two inclined tripods 2 are respectively located on both sides of the pressure vessel 1, so as to realize maintaining the relative position between the magnetic particle non-destructive testing device and the pressure vessel 1.

[0028] In one embodiment, the apex angle of the inclined tripod 2 is located outside the upper region of the bottom plate frame, as Figure 4 shown in the figure. In this way, the first cross bar 4 installed near the apex angle of the inclined tripod 2 can be attached to the side surface of the pressure vessel 1, and the inclined tripod 2 is specifically designed and adapted to the size of the pressure vessel 1.

[0029] In one embodiment, a handle 600 is fixedly connected to the side surface of the magnetic particle detection body 6 to facilitate the user to operate the magnetic particle detection body 6.

[0030] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A magnetic particle nondestructive testing device for testing a weld seam along an axial direction on a pressure vessel (1), characterized in that: The detection device comprises a magnetic powder detection body (6) and two groups of symmetrically arranged inclined tripods (2), each group of inclined tripods (2) being provided with a supporting wheel frame (3) at the bottom, a first horizontal frame (4) and a second horizontal frame (5) arranged up and down and parallel to each other being fixedly connected between the two groups of inclined tripods (2), the two groups of inclined tripods (2) being respectively located at two ends of a pressure vessel (1), and the first horizontal frame (4) and the second horizontal frame (5) being both parallel to an axial welding seam on the pressure vessel (1), the magnetic powder detection body (6) being slidably mounted on the upper first horizontal frame (4), and two metal yoke columns of the magnetic powder detection body (6) being respectively in contact with two sides of the welding seam of the pressure vessel (1); an adjusting and limiting mechanism of the magnetic powder detection body (6) being provided on the lower second horizontal frame (5); and an oblique support bracket (7) being further provided on the second horizontal frame (5), and a travel wheel (8) being fixedly mounted on the bottom end of the oblique support bracket (7).

2. A magnetic powder nondestructive testing device according to claim 1, characterized in that: The inclined tripod (2) is an obtuse triangle bracket, wherein one obtuse angle side is a bottom frame, the first cross frame (4) and the second cross frame (5) are both arranged on the other obtuse angle side frame, the supporting wheel frame (3) is connected to the bottom frame of the inclined tripod (2), the two groups of supporting wheel frames (3) are respectively arranged on opposite surfaces of the two groups of inclined tripods (2), the two groups of inclined tripods (2), the two groups of supporting wheel frames (3) and the two cross frames are arranged to form a space for mounting the pressure vessel (1), and the two ends of the pressure vessel (1) are respectively mounted on the two groups of supporting wheel frames (3).

3. A magnetic powder nondestructive testing device according to claim 1 or 2, characterized in that: The magnetic powder detection body (6) is rotatably connected to the first cross frame (4); the adjustment limit mechanism comprises a connecting rod frame (9) fixed to the bottom of the magnetic powder detection body (6) and an adjustment connecting rod (10) movably mounted on the second cross frame (5); a long sliding hole is provided at one end of the adjustment connecting rod (10) away from the second cross frame (5); one end of the connecting rod frame (9) away from the magnetic powder detection body (6) is fixedly connected to the second cross frame (5) by a fastening screw (11), and the fastening screw (11) is located inside the long sliding hole, and can slide and adjust along the long sliding hole in a loosened state.

4. A magnetic powder nondestructive testing device according to claim 1 or 2, characterized in that: The supporting wheel frame (3) comprises a first roller (300) and a second roller (301) which are arranged in parallel, wherein the first roller (300) is rotatably connected to one end of the inclined tripod (2) adjacent to the second horizontal frame (5), and the second roller (301) is installed at one end of the inclined tripod (2) away from the second horizontal frame (5) through a mounting plate (302), and the mounting plate (302) is connected to the bottom plate of the inclined tripod (2) through a hinge (303), and a limiting clamp (304) is slidably installed on the inclined tripod (2), and when the limiting clamp (304) slides to the connection between the mounting plate (302) and the bottom side frame, the main mounting plate (302) and the inclined frame of the inclined tripod (2) are simultaneously clamped to limit the position thereof.

5. A magnetic powder nondestructive testing device according to claim 1 or 2, characterized in that: The top corner of the inclined tripod (2) is located outside the area above the bottom edge frame.

6. A magnetic powder nondestructive testing device according to claim 1 or 2, characterized in that: A handle (600) is fixedly connected to the side surface of the magnetic powder detection body (6).

7. A magnetic powder nondestructive testing device according to claim 1 or 2, characterized in that: Two groups of diagonal brace brackets (7) are provided, and the two groups of diagonal brace brackets (7) are distributed at both ends of the second cross frame (5).

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