Weld seal non-destructive testing device

Abstract

The utility model provides a weld seal nondestructive testing device, including magnetic yoke main part, connecting portion and magnetic pole foot, connecting portion symmetry installs in the left and right two ends of magnetic yoke main part, magnetic pole foot passes through connecting portion with magnetic yoke main part connection, magnetic pole foot with connecting portion rotatory connection, connecting portion with magnetic yoke main part rotatory connection, install locking mechanism for fixing connecting portion on magnetic yoke main part, install magnetic powder spraying device on magnetic yoke main part, the utility model can solve the contact surface shape fixed of electromagnet in prior art, cannot change according to work piece surface shape, when detecting complex shape work piece, cannot form good surface contact, lead to local magnetic field intensity deficiency and miss the problem such as tiny defect.

Description

Technical Field

[0001] This utility model relates to the field of weld inspection technology, specifically a non-destructive testing device for weld sealing. Background Technology

[0002] Magnetic particle testing, as an important method of non-destructive testing, has a wide application in weld sealing inspection. Its principle is that when a ferromagnetic workpiece is magnetized, if defects exist on or near the surface, the magnetic field lines will be distorted, forming a leakage magnetic field. This attracts magnetic particles, forming magnetic traces, thus revealing the location and shape of the defects.

[0003] When performing non-destructive testing on a workpiece, the inspector needs to hold the testing instrument with one hand and the magnetic suspension sprayer with the other hand while moving around, and observe the area being tested. This results in high labor intensity for the inspector and is prone to misjudgment, missed judgment, or missed inspection. To solve the problems in the prior art, utility model with announcement number CN206161589U discloses an automatic magnetic particle testing device (hereinafter referred to as prior art 1), which includes a movable frame that can be moved or fixed on the workpiece to be tested and a magnetization testing mechanism installed on the movable frame. The magnetization testing mechanism includes four electromagnets arranged orthogonally to each other and a magnetic suspension spraying device. The electromagnets extend downward to near the surface of the workpiece to be tested.

[0004] In the prior art 1, four orthogonally arranged flaw detection electromagnets and a magnetic suspension spraying device are used to inspect butt welds, which improves the inspection efficiency and effectively reduces the labor intensity of the inspection personnel. However, the contact surface shape of the existing flaw detection electromagnets is fixed and cannot be changed according to the surface shape of the workpiece. When inspecting workpieces with complex shapes, good surface contact cannot be formed, resulting in insufficient local magnetic field strength and missed detection of small defects. Or, due to the gap between the magnetic yoke head and the workpiece, false defect signals are generated, which seriously reduces the magnetization effect of the magnetic particle flaw detector on the workpiece and greatly reduces the detection sensitivity of defects. Utility Model Content

[0005] The purpose of this invention is to provide a non-destructive testing device for weld sealing. In practical use, it can solve the problems in the prior art where the contact surface shape of the electromagnet is fixed and cannot be changed according to the surface shape of the workpiece. When testing complex-shaped workpieces, it cannot achieve good surface contact, resulting in insufficient local magnetic field strength and missed detection of minor defects.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A non-destructive testing device for weld sealing includes a magnetic yoke body, a connecting part, and magnetic pole feet, wherein the connecting part is symmetrically installed at the left and right ends of the magnetic yoke body; The magnetic pole foot is connected to the magnetic yoke body through the connecting part, and the magnetic pole foot is rotatably connected to the connecting part; the connecting part is rotatably connected to the magnetic yoke body, and a locking mechanism for fixing the connecting part is installed on the magnetic yoke body; A magnetic powder spraying device is installed on the main body of the magnetic yoke.

[0007] Preferably, the locking mechanism includes a locking pin and a tension spring. The locking pin is slidably mounted on the magnetic yoke body and connected to the magnetic yoke body via the tension spring. The connecting part is provided with a locking hole for engaging with the locking pin.

[0008] Preferably, there are several locking holes, and the locking holes are evenly spaced along the circumferential direction of the connecting part.

[0009] Preferably, a rotating ring is rotatably mounted on the locking pin, the rotating ring is connected to the end of the tension spring away from the magnetic yoke body, and the locking pin is provided with threads.

[0010] Preferably, a battery is mounted on the magnetic yoke body, and the battery is detachably connected to the magnetic yoke body.

[0011] Preferably, the magnetic pole foot is threaded with a limit bolt.

[0012] Preferably, the magnetic powder spraying device includes a magnetic powder tank and a spraying assembly, wherein the magnetic powder tank is connected to the magnetic yoke body and the spraying assembly is mounted on the magnetic powder tank.

[0013] Preferably, the spraying assembly includes a nozzle and a telescopic tube, and the nozzle is connected to the magnetic powder tank through the telescopic tube.

[0014] Compared with the prior art, the present invention has the following beneficial effects: In this invention, by rotatably connecting the connecting part to the magnetic yoke body, the magnetic pole foot can rotate around the axis of the connecting part, changing the setting direction of the magnetic pole foot; the rotated magnetic pole foot can change according to the surface shape of the workpiece, ensuring that the magnetic pole foot can fit with the surface of workpieces of different shapes; The magnetic pole foot is rotatably connected to the connecting part via a rotating shaft, allowing the magnetic pole foot to rotate around the rotating shaft and change the setting angle of the magnetic pole foot. This ensures that the magnetic pole foot can fit with the connecting surface of the workpiece at different angles, and ensures that the magnetic pole foot can fit with the surface of the workpiece even on workpieces with different angles, forming good surface contact. This breaks through the limitation of the fixed angle of traditional magnetic yokes and adapts to complex weld shapes. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a perspective view of the present invention.

[0017] Figure 2 This is a schematic diagram of the structure of this utility model.

[0018] Figure 3 This utility model Figure 2 A magnified view of a portion of point A in the middle.

[0019] The attached diagram lists the components represented by each number as follows: 101-Magnetic yoke body, 102-Connecting part, 103-Magnetic pole foot, 104-Locking mechanism, 105-Magnetic powder spraying device, 106-Locking pin, 107-Tension spring, 108-Locking hole, 109-Rotating ring, 110-Battery, 111-Limit bolt, 112-Magnetic powder tank, 113-Spraying assembly, 114-Handle, 115-Telescopic tube, 116-Baffle. Detailed Implementation

[0020] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0021] In the description of the embodiments of this utility model, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of 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 the embodiments of this utility model.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0023] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0024] In this embodiment of the invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0025] The following disclosure provides many different implementations or examples for different structures of the embodiments of the present invention. To simplify the disclosure of the embodiments of the present invention, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the embodiments of the present invention. Furthermore, reference numerals and / or reference letters may be repeated in different examples of the embodiments of the present invention; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various implementations and / or arrangements discussed.

[0026] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0027] See Figures 1-3 This embodiment discloses a detection device for detecting welds, specifically a non-destructive testing device for weld sealing, including a magnetic yoke body 101, a connecting part 102 and magnetic pole feet 103, wherein the connecting part 102 is symmetrically installed at the left and right ends of the magnetic yoke body 101. The magnetic pole foot 103 is connected to the magnetic yoke body 101 through the connecting part 102, and the magnetic pole foot 103 is rotatably connected to the connecting part 102; the connecting part 102 is rotatably connected to the magnetic yoke body 101, and a locking mechanism 104 for fixing the connecting part 102 is installed on the magnetic yoke body 101; A magnetic powder spraying device 105 is installed on the magnetic yoke body 101.

[0028] In this invention, the magnetic yoke body 101 is a conventional magnetization device in the prior art. The magnetic yoke body 101 contains an electromagnetic coil, which generates a magnetic field when energized. This magnetic field is transmitted to the weld area through the magnetic pole feet 103, thus magnetizing the workpiece. Its structure and function will not be described in detail here. By rotatably connecting the connecting part 102 to the magnetic yoke body 101, the magnetic pole feet 103 can rotate around the axis of the connecting part 102, changing the orientation of the magnetic pole feet 103. The rotated magnetic pole feet 103 can be adjusted according to the surface shape of the workpiece, ensuring the magnetic pole feet 103... 3. It can fit with the surface of workpieces of different shapes (e.g., V-shaped, inverted V-shaped, flat, etc.); the magnetic pole foot 103 is rotatably connected to the connecting part 102 through a rotating shaft, so that the magnetic pole foot 103 can rotate around the rotating shaft, change the setting angle of the magnetic pole foot 103, and ensure that the magnetic pole foot 103 can fit with the connecting surface of the workpiece (e.g., V-shaped, inverted V-shaped, T-shaped, etc.) at different angles; it ensures that the magnetic pole foot 103 can also fit with the surface of the workpiece on workpieces with different angles, forming good surface contact, breaking through the limitation of the fixed angle of the traditional magnetic yoke, and adapting to complex weld shapes.

[0029] In some embodiments, the locking mechanism 104 includes a locking pin 106 and a tension spring 107. The locking pin 106 is slidably mounted on the yoke body 101, and the locking pin 106 is connected to the yoke body 101 via the tension spring 107. The connecting portion 102 is provided with a locking hole 108 for engaging with the locking pin 106. In this embodiment, one end of the tension spring 107 is fixedly connected to the yoke body 101, and the other end is fixedly connected to the locking pin 106. When it is necessary to rotate the connecting portion 102 to adjust the orientation of the magnetic pole foot 103, the locking pin 106 is pulled outward. After the tension spring 107 is stretched, the locking pin 106 disengages from the locking hole 108. At this time, the connecting portion 102 can rotate freely around the yoke body 101 to ensure that the magnetic pole foot 103 can fit against the surface of workpieces of different shapes.

[0030] In some embodiments, there are a plurality of locking holes 108, which are equally spaced along the circumferential direction of the connecting portion 102. By having the limiting holes equally spaced along the circumferential direction of the connecting portion 102 cooperate with the locking pin 106, multiple angle selections can be provided. Compared with continuous adjustment, standardized angle switching can be quickly achieved without complex scale markings.

[0031] In some embodiments, a rotating ring 109 is rotatably mounted on the locking pin 106. The rotating ring 109 is connected to the end of the tension spring 107 away from the magnetic yoke body 101, and the locking pin 106 is provided with threads. In this embodiment, the locking pin 106 is detachably connected to the magnetic yoke body 101 via the threads. When the connecting block drives the magnetic pole foot 103 to rotate to a predetermined position, rotating the locking pin 106 causes the threads on the locking pin 106 to engage with the magnetic yoke body 101 to perform a secondary locking of the locking pin 106. The engagement between the locking pin 106 and the locking hole 108 provides initial positioning, preventing the connecting part 102 from rotating freely. The threads and the magnetic yoke body 101 form a threaded pair for secondary locking. This prevents the locking pin 106 from loosening after vibration, which would affect the stable locking state of the connecting part 102.

[0032] In some embodiments, a battery 110 is mounted on the yoke body 101, and the battery 110 is detachably connected to the yoke body 101. In this embodiment, the yoke body 101 is provided with a slot for cooperating with the battery 110. The battery 110 is detachably connected to the yoke body 101 through the slot, which facilitates the installation and replacement of the battery 110, enabling the yoke body 101 to receive a continuous power supply. After being inserted into the slot, the battery 110 supplies power to the electromagnetic coil inside the yoke body 101, providing the current required for magnetization.

[0033] In some embodiments, a limiting bolt 111 is threaded onto the magnetic pole foot 103. In this embodiment, the friction between the magnetic pole foot 103 and the connecting part 102 can be adjusted by rotating the limiting bolt 111, allowing the magnetic pole foot 103 to switch between a fixed angle and a rotatable state. When the limiting bolt 111 is tightened, the magnetic pole foot 103 and the connecting part 102 form a rigid connection, ensuring a tight magnetic circuit closure and reducing magnetic leakage.

[0034] In some embodiments, the magnetic powder spraying device 105 includes a magnetic powder tank 112 and a spraying assembly 113. The magnetic powder tank 112 is connected to the magnetic yoke body 101, and the spraying assembly 113 is mounted on the magnetic powder tank 112. The magnetic powder tank 112 is fixedly mounted on the magnetic yoke body 101 and is used to store dry or wet magnetic powder. In this embodiment, the magnetic powder tank 112 is made of transparent material to allow observation of the amount of magnetic powder in the tank. A compressed air source is installed on the magnetic powder tank 112 to supply clean and dry compressed air into the magnetic powder tank 112, so that the magnetic powder in the magnetic powder tank 112 can be sprayed out by the spraying assembly 113 to cover the weld area.

[0035] In some embodiments, the spraying assembly 113 includes a nozzle and a telescopic tube 115, the nozzle being connected to the magnetic powder tank 112 via the telescopic tube 115. In this embodiment, the telescopic tube 115 is a corrugated pipe. By setting the telescopic tube 115, the position of the nozzle can be adjusted to accurately and evenly spray magnetic powder onto the weld seam to adapt to complex weld seam structures; it can also prevent the nozzle from directly contacting the workpiece, preventing contamination or collision.

[0036] In some embodiments, a baffle 116 is installed on the nozzle, and the baffle 116 is detachably connected to the nozzle. In this embodiment, the baffle 116 is detachably connected to the nozzle by bolts, and the bottom end of the baffle 116 is located below the nozzle. The baffle 116 can form a physical barrier, confining the magnetic powder (or magnetic suspension) sprayed from the nozzle within the baffle 116, preventing the magnetic powder from splashing in all directions, ensuring that the magnetic powder only acts on the surface of the workpiece being inspected, and reducing the contamination of other parts of the equipment or operators by the magnetic powder. Furthermore, the bottom end of the baffle 116 is located below the nozzle, so that when the nozzle approaches the workpiece for inspection, the baffle 116 contacts the workpiece surface first, avoiding impact between the nozzle and the workpiece that could cause nozzle deformation or blockage. In the non-working state, the baffle 116 can act as a physical barrier, preventing residual oil, moisture, or other impurities on the workpiece surface from splashing into the nozzle, avoiding clogging of the nozzle or contaminating the cleaning magnetic powder in the magnetic powder tank 112.

[0037] In some embodiments, a handle 114 is connected to the magnetic yoke body 101. The handle 114 facilitates the movement and positioning of the magnetic yoke body 101 by the operator.

[0038] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0039] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A non-destructive testing device for weld sealing, characterized in that: It includes a magnetic yoke body (101), a connecting part (102) and magnetic pole feet (103), wherein the connecting part (102) is symmetrically installed at the left and right ends of the magnetic yoke body (101); The magnetic pole foot (103) is connected to the magnetic yoke body (101) through the connecting part (102), and the magnetic pole foot (103) is rotatably connected to the connecting part (102); the connecting part (102) is rotatably connected to the magnetic yoke body (101), and a locking mechanism (104) for fixing the connecting part (102) is installed on the magnetic yoke body (101). A magnetic powder spraying device (105) is installed on the magnetic yoke body (101).

2. The non-destructive testing device for weld sealing according to claim 1, characterized in that: The locking mechanism (104) includes a locking pin (106) and a tension spring (107). The locking pin (106) is slidably mounted on the magnetic yoke body (101). The locking pin (106) is connected to the magnetic yoke body (101) through the tension spring (107). The connecting part (102) is provided with a locking hole (108) for cooperating with the locking pin (106).

3. The non-destructive testing device for weld sealing according to claim 2, characterized in that: There are several locking holes (108), and the locking holes (108) are evenly spaced along the circumferential direction of the connecting part (102).

4. The non-destructive testing device for weld sealing according to claim 3, characterized in that: A rotating ring (109) is rotatably mounted on the locking pin (106). The rotating ring (109) is connected to the end of the tension spring (107) away from the magnetic yoke body (101). The locking pin (106) is provided with threads.

5. The non-destructive testing device for weld sealing according to claim 1, characterized in that: A battery (110) is installed on the magnetic yoke body (101), and the battery (110) is detachably connected to the magnetic yoke body (101).

6. The non-destructive testing device for weld sealing according to claim 3, characterized in that: The magnetic pole foot (103) is threaded with a limit bolt (111).

7. The non-destructive testing device for weld sealing according to claim 1, characterized in that: The magnetic powder spraying device (105) includes a magnetic powder tank (112) and a spraying assembly (113). The magnetic powder tank (112) is connected to the magnetic yoke body (101), and the spraying assembly (113) is installed on the magnetic powder tank (112).

8. The non-destructive testing device for weld sealing according to claim 7, characterized in that: The spraying assembly (113) includes a nozzle and a telescopic tube (115), the nozzle being connected to the magnetic powder tank (112) via the telescopic tube (115).

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