A welding seam quality detection tool

Abstract

The utility model provides a kind of weld quality detection tool, including magnetic yoke main body, connecting portion and magnetic pole foot assembly, the connecting portion is installed in the left and right ends of magnetic yoke main body;The magnetic pole foot assembly includes rotating block and rotating shaft, the rotating block is rotatably connected with the connecting portion, the rotating shaft is symmetrically rotatably installed on the rotating block, cleaning assembly is installed on the magnetic yoke main body;Magnetic powder spraying device is installed on the magnetic yoke main body;The cleaning assembly includes mounting bracket, scraper and brush, the mounting bracket is connected with the magnetic yoke main body, the scraper and brush are detachably connected with the mounting bracket;The utility model can solve the problem that the contact surface of flaw detection electromagnet in the prior art cannot be self-adaptively adjusted according to pipe diameter, resulting in poor magnetization effect and low detection sensitivity.

Description

TECHNICAL FIELD

[0001] The utility model relates to quality detection technical field, concretely is a kind of welding seam quality detection frock. BACKGROUND

[0002] As one of important means of nondestructive testing, magnetic particle testing has a wide application in welding seam sealing detection. Its principle is that when ferromagnetic workpiece is magnetized, if there is defect on surface or near surface, magnetic force line will be distorted, form leakage magnetic field, adsorb magnetic powder to form magnetic mark, so as to show the position and shape of defect.

[0003] When carrying out nondestructive testing on work, detection personnel need to hold detection instrument with one hand and magnetic suspension liquid spray pot with the other hand in the process of moving, and simultaneously operate and observe the detected part; the labor intensity of detection personnel is higher, and it is easy to cause misjudgment, omission or missed detection; in order to solve the problems in the prior art, the utility model with publication number CN2016161589U (hereinafter referred to as prior art 1) discloses an automatic magnetic particle detection device, which comprises a movable rack movable on a detection workpiece or fixed on the detection workpiece, and a magnetization detection mechanism installed on the movable rack; the magnetization detection mechanism comprises four mutually orthogonal electromagnets and a magnetic suspension liquid spraying device; the electromagnets extend downward to approach the surface of the detection workpiece.

[0004] In prior art 1, four mutually orthogonal detection electromagnets and the magnetic suspension liquid spraying device are used to detect butt weld, which improves detection efficiency and effectively reduces the labor intensity of detection personnel; however, the contact surface of the existing detection electromagnet cannot be self-adaptively adjusted according to the pipe diameter when detecting pipe, and the magnetic yoke head does not fully contact with the pipe during detection, which may cause insufficient local magnetic field strength and missed detection of small defects, or cause false defect signals due to the gap between the magnetic yoke head and the pipe, greatly reducing magnetization effect and detection sensitivity to defects. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a welding seam quality detection frock, which can solve the problem that the contact surface of the detection electromagnet in the prior art cannot be self-adaptively adjusted according to the pipe diameter, resulting in poor magnetization effect and low detection sensitivity in actual use.

[0006] To solve the above technical problems, the utility model adopts the following technical scheme: A welding seam quality detection frock, comprising a magnetic yoke main body, a connecting part and a magnetic pole foot assembly; the connecting part is installed at the left and right ends of the magnetic yoke main body; The magnetic pole foot assembly includes a rotating block and a rotating shaft. The rotating block is rotatably connected to the connecting part. The rotating shaft is symmetrically rotatably mounted on the rotating block. A cleaning component 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 cleaning assembly includes a mounting bracket, a scraper, and a brush, wherein the mounting bracket is connected to the magnetic yoke body, and the scraper and brush are detachably connected to the mounting bracket.

[0008] Preferably, the scraper is inclined away from the brush.

[0009] Preferably, the scraper is slidably mounted on the mounting bracket, and a tension spring is connected to the mounting bracket, with the end of the tension spring away from the mounting bracket connected to the scraper.

[0010] Preferably, the 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.

[0011] Preferably, the spraying assembly includes a nozzle and a telescopic mechanism. The nozzle is connected to the magnetic powder tank through the telescopic mechanism. A telescopic tube is connected to the magnetic powder tank, and the end of the telescopic tube away from the magnetic powder tank is connected to the nozzle.

[0012] Preferably, a baffle is installed at the bottom end of the nozzle.

[0013] Preferably, the bottom end of the baffle is provided with an arc-shaped groove.

[0014] Compared with the prior art, the present invention has the following beneficial effects: In this invention, the rotating block can adaptively rotate and adjust according to pipes of different diameters, ensuring that the rotating shaft installed on the rotating part is in full contact with the pipe, effectively avoiding the problem of insufficient local magnetic field strength or the generation of false defect signals due to insufficient contact, and significantly improving the magnetization effect and the sensitivity of defect detection. By rotating the rotating shaft onto the rotating block, the sliding friction between the rotating shaft and the pipe can be converted into rolling friction, thus preventing the magnetic pole foot assembly from rubbing against the pipe when there is relative movement between them. By setting up the cleaning component, the weld surface can be effectively cleaned before the pipeline weld is inspected, impurities can be removed, the accuracy of the inspection results can be guaranteed, and the occurrence of misjudgment and omission can be reduced. 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 For the present 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 assembly, 104-Rotating block, 105-Rotating shaft, 106-Cleaning assembly, 107-Magnetic powder spraying device, 108-Mounting bracket, 109-Scraper, 110-Brush, 111-Tension spring, 112-Magnetic powder tank, 113-Spraying assembly, 114-Spray head, 115-Telescopic mechanism, 116-Telescopic tube, 117-Baffle, 118-Arc groove, 119-Ball bearing. 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 weld quality inspection fixture, including a magnetic yoke body 101, a connecting part 102 and a magnetic pole foot assembly 103, wherein the connecting part 102 is installed at the left and right ends of the magnetic yoke body 101; The magnetic pole foot assembly 103 includes a rotating block 104 and a rotating shaft 105. The rotating block 104 is rotatably connected to the connecting part 102. The rotating shaft 105 is symmetrically rotatably mounted on the rotating block 104. A cleaning assembly 106 is installed on the magnetic yoke body 101. A magnetic powder spraying device 107 is installed on the magnetic yoke body 101.

[0028] In this embodiment, the magnetic pole foot assembly 103 is made of a magnetic yoke material with high magnetic permeability, used to guide and concentrate magnetic field lines; the magnetic yoke body 101 is a conventional magnetization device in the prior art, and an electromagnetic coil is provided inside the magnetic yoke body 101. After being energized, a magnetic field is generated, which is transmitted to the weld area through the magnetic pole foot assembly 103 to achieve workpiece magnetization; the connecting part 102 is a common connecting structure in magnetic yoke devices, and its structure and function will not be described in detail here; the rotating block 104 is rotatably connected to the rotating part, and a miniature drive motor for driving the rotating block 104 to rotate is installed in the magnetic yoke body 101. This allows the rotating block 104 to adaptively rotate and adjust according to pipes of different diameters, ensuring that the rotating shaft 105 mounted on the rotating part is in full contact with the pipe. This effectively avoids problems such as insufficient local magnetic field strength or the generation of false defect signals due to insufficient contact, significantly improving the magnetization effect and the sensitivity to defect detection. The micro drive motor is a conventional technology in the prior art, and its structure and function will not be described in detail here. By rotating the rotating shaft 105 on the rotating block 104, the sliding friction generated between the rotating shaft 105 and the pipe can be converted into rolling friction, avoiding the magnetic pole feet... When component 103 moves relative to the pipe, it causes friction against the pipe. In this embodiment, there are two rotating shafts 105, which are symmetrically installed at the left and right ends of the rotating block 104. This makes the tooling more balanced in terms of force during use, more stable in operation, and increases the contact area between the magnetic pole foot component 103 and the pipe. By setting the cleaning component 106, the weld surface can be effectively cleaned before the pipe weld is inspected, removing impurities, ensuring the accuracy of the inspection results, and reducing the occurrence of misjudgments and omissions. In this embodiment, the tooling can be manually held as needed. The magnetic yoke body 101 moves around the pipeline to inspect the pipeline weld; alternatively, conventional equipment can be used to drive the pipeline to rotate before placing the magnetic yoke body 101 in a fixed position for inspection. Specific inspection methods for the inspection fixture will not be elaborated here. Regardless of the method used, the magnetic powder spraying device 107 installed on the magnetic yoke body 101 can automatically spray magnetic powder onto the weld during the movement of the pipeline or the magnetic yoke body 101, eliminating the need for personnel to manually operate the sprayer, reducing labor intensity, and improving the convenience and efficiency of the inspection operation.

[0029] In some embodiments, the cleaning assembly 106 includes a mounting bracket 108, a scraper 109, and a brush 110. The mounting bracket 108 is connected to the magnetic yoke body 101, and the scraper 109 and brush 110 are detachably connected to the mounting bracket 108. In this embodiment, the mounting bracket 108 has two mounting slots. The scraper 109 and brush 110 are detachably mounted in the mounting slots by bolts. The scraper 109 is positioned between the brush 110 and the magnetic yoke body 101, so that when the pipe or the magnetic yoke body 101 moves, the brush 110 can first clean the lighter impurities such as dust and loose particles on the surface of the pipe, and the scraper 109 can then scrape off more stubborn oil stains, welding slag, and thicker rust layers; thereby achieving all-round cleaning of the weld surface, ensuring that the weld surface is clean and tidy, and providing a good detection basis for subsequent magnetic particle testing. To avoid the problem of residual impurities interfering with the distribution of magnetic field lines, causing distortion of the leakage magnetic field, and thus producing false magnetic traces, which affects the accuracy of the test results.

[0030] In some embodiments, the scraper 109 is inclined away from the brush 110. In this embodiment, the edge of the inclined scraper 109 forms a certain scraping angle with the pipe surface, which can more efficiently scrape up and peel off stubborn impurities compared to a vertically arranged scraper 109; and as the pipe or magnetic yoke body 101 moves, the inclined scraper 109 can guide the impurities away from the brush 110 when scraping them, avoiding the accumulation of impurities in front of the scraper 109 and ensuring the smooth progress of the cleaning work.

[0031] In some embodiments, the scraper 109 is slidably mounted on the mounting bracket 108, and a tension spring 111 is connected to the mounting bracket 108. The end of the tension spring 111 away from the mounting bracket 108 is connected to the scraper 109. In this embodiment, the elastic force provided by the tension spring 111 connecting the scraper 109 and the mounting bracket 108 enables the scraper 109 to adapt to the surface profile of pipes of different diameters, keeping the scraper 109 in contact with the pipe surface and effectively removing stubborn impurities. Furthermore, during the inspection process, if the scraper 109 suddenly encounters a hard obstacle such as weld beads or spatter, the tension spring 111 will instantly compress to absorb the impact force, preventing the scraper 109 from being damaged by a rigid collision with the obstacle.

[0032] In some embodiments, the spraying device 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 tank can be sprayed out by the spraying assembly 113 to cover the weld area.

[0033] In some embodiments, the spraying assembly 113 includes a nozzle 114 and a telescopic mechanism 115. The nozzle 114 is connected to the magnetic powder tank 112 via the telescopic mechanism 115. A telescopic tube 116 is connected to the magnetic powder tank 112, with one end of the telescopic tube 116 away from the magnetic powder tank 112 connected to the nozzle 114. In this embodiment, the telescopic mechanism 115 is a conventional telescopic rod device in the prior art, and its structure and function will not be described in detail here. By setting the telescopic mechanism 115, the position and height of the nozzle 114 can be flexibly adjusted according to the weld location and inspection requirements. The telescopic tube 116 can be stretched or compressed as the nozzle 114 moves. After the compressed air source delivers clean and dry compressed air into the magnetic powder tank 112, the magnetic powder in the magnetic powder tank 112 can be sprayed out from the nozzle 114 through the telescopic tube 116, covering the weld area.

[0034] In some embodiments, a baffle 117 is installed at the bottom of the nozzle 114. In this embodiment, the baffle 117 is made of rubber material; by setting the baffle 117, the scattering angle of the magnetic powder after it is sprayed from the nozzle 114 can be limited, so that the magnetic powder is concentrated on the weld and its surrounding area, avoiding splashing to irrelevant locations such as non-inspection surfaces of the workpiece or other parts of the equipment, reducing magnetic powder waste and subsequent cleaning workload; and the baffle 117 is detachably connected to the nozzle 114 by bolts, with the bottom end of the baffle 117 located below the nozzle 114; so that when the nozzle 114 approaches the workpiece for inspection, the baffle 117 contacts the workpiece surface first, avoiding impact between the nozzle 114 and the workpiece that could cause nozzle deformation or blockage; in the non-working state, the baffle 117 can act as a physical barrier to prevent residual oil, moisture or other impurities on the workpiece surface from splashing into the nozzle 114, avoiding clogging of the nozzle or contamination of the cleaning magnetic powder in the magnetic powder tank 112.

[0035] In some embodiments, the bottom end of the baffle 117 is provided with an arc-shaped groove 118. In this embodiment, by providing the arc-shaped groove 118, the baffle 117 can closely fit the curved contour of the workpiece, and the distance between the nozzle 114 and the weld surface remains relatively stable, which allows the magnetic powder to be sprayed more evenly on the weld.

[0036] In some embodiments, the arc-shaped groove 118 is provided with a ball cavity, and a ball bearing 119 is rolled inside the ball cavity. By providing the ball bearing 119, the sliding friction generated between the rotating shaft 105 and the pipe can be converted into rolling friction, avoiding scratching of the pipe when the magnetic pole foot assembly 103 moves relative to the pipe.

[0037] 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.

[0038] 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 tooling for inspecting weld quality, characterized in that: It includes a magnetic yoke body (101), a connecting part (102), and a magnetic pole foot assembly (103), wherein the connecting part (102) is installed at the left and right ends of the magnetic yoke body (101); The magnetic pole foot assembly (103) includes a rotating block (104) and a rotating shaft (105). The rotating block (104) is rotatably connected to the connecting part (102). The rotating shaft (105) is symmetrically rotated and mounted on the rotating block (104). A cleaning assembly (106) is installed on the magnetic yoke body (101). A magnetic powder spraying device (107) is installed on the magnetic yoke body (101).

2. The weld quality inspection fixture according to claim 1, characterized in that: The cleaning assembly (106) includes a mounting bracket (108), a scraper (109), and a brush (110). The mounting bracket (108) is connected to the magnetic yoke body (101), and the scraper (109) and the brush (110) are detachably connected to the mounting bracket (108).

3. The weld quality inspection fixture according to claim 2, characterized in that: The scraper (109) is inclined away from the brush (110).

4. The weld quality inspection fixture according to claim 2, characterized in that: The scraper (109) is slidably mounted on the mounting bracket (108), and a tension spring (111) is connected to the mounting bracket (108). The end of the tension spring (111) away from the mounting bracket (108) is connected to the scraper (109).

5. The weld quality inspection fixture according to claim 1, characterized in that: The spraying device 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).

6. The weld quality inspection fixture according to claim 5, characterized in that: The spraying assembly (113) includes a nozzle (114) and a telescopic mechanism (115). The nozzle (114) is connected to the magnetic powder tank (112) through the telescopic mechanism (115). A telescopic tube (116) is connected to the magnetic powder tank (112). The end of the telescopic tube (116) away from the magnetic powder tank (112) is connected to the nozzle (114).

7. The weld quality inspection fixture according to claim 6, characterized in that: A baffle (117) is installed at the bottom of the nozzle (114).

8. The weld quality inspection fixture according to claim 7, characterized in that: The bottom end of the baffle (117) is provided with an arc-shaped groove (118).

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