Magnetic particle detection device for pipeline welding seam detection

Abstract

The utility model discloses a magnetic particle detection device for pipeline welding seam detection, and belongs to the technical field of pipeline welding seam detection. The magnetic powder detection device comprises an operation table, a rack fixedly arranged on the operation table, and a supporting mechanism arranged on the operation table and used for supporting and rotating a pipe body, the spray head is fixedly arranged on the rack and is used for spraying magnetic powder liquid to a pipe body; the magnet yoke flaw detector is fixedly arranged on the rack and corresponds to the position above the spray head; the magnetic powder detection device further comprises a banister brush head which is arranged on one side, corresponding to the upper portion of the supporting mechanism, of the operation table and used for brushing magnetic powder liquid on the surface of the pipe body. According to the magnetic powder detection device for pipeline welding seam detection, the rotating banister brush head is arranged to brush the pipe body sprayed with the magnetic powder liquid, so that the magnetic powder liquid can be uniformly covered on the surface of the pipe body, the welding seam and a narrow or complex-shaped part can be fully exposed, the accuracy and comprehensiveness of detection are improved, and the possibility of missing detection is reduced.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of pipeline weld detection, and particularly relates to a magnetic powder detection device for pipeline weld detection. BACKGROUND

[0002] In the pipeline manufacturing and installation process, the quality of the weld directly relates to the safety and reliability of the entire pipeline system. Therefore, accurate and comprehensive detection of the pipeline weld is crucial. Among them, the magnetic powder detection, as an important non-destructive detection method, has been widely applied in the pipeline weld detection due to its high detection sensitivity, simple operation and low cost.

[0003] A magnetic powder detection device for seamless steel pipe detection is disclosed in the Chinese utility model patent with the publication number CN210015080U. The device can directly complete the magnetic powder detection of the workpiece without personnel intervention and improve the work efficiency by means of the linkage of the irradiation mechanism and the liquid spraying piece for spraying the magnetic suspension liquid and ultraviolet irradiation on the spraying part and synchronously photographing the spraying part. However, the application mode of the magnetic powder liquid is only spraying, and since the magnetic powder liquid is usually composed of magnetic powder and liquid solvent, if the liquid flowability is strong or the spraying is uneven, a relatively thick coating is easily formed in some areas, while a relatively thin coating is formed in other places, and even there is no coverage, especially in some narrow or complex parts. This unevenness directly affects the full exposure of the magnetic powder to the weld and potential defects, and thus weakens the detection effect of the defects and increases the risk of missed detection.

[0004] Therefore, the application provides a magnetic powder detection device for pipeline weld detection to solve the above problems. CONTENT OF THE UTILITY MODEL

[0005] The application provides a magnetic powder detection device for pipeline weld detection, which aims to solve the problems that the existing magnetic powder detection device is high in automation and efficiency, but the spraying of the magnetic powder liquid easily leads to uneven coating, especially in narrow or complex parts, and easily increases the risk of missed detection.

[0006] To achieve the above-mentioned purpose, the application provides the following technical scheme: a magnetic powder detection device for pipeline weld detection, comprising an operation table, a rack fixedly arranged on the operation table, a supporting mechanism arranged on the operation table and used for supporting and rotating a pipe body, a spray head fixedly arranged on the rack and used for spraying a magnetic powder liquid on the pipe body, and a magnetic yoke detector fixedly arranged on the rack at a position corresponding to an upper position of the spray head.

[0007] The magnetic powder detection device further comprises a soft brush head arranged on the operation table corresponding to the side above the support mechanism for brushing the surface of the pipe body with the magnetic powder liquid, and a transmission assembly arranged on the rack for transmitting power from the support mechanism to the soft brush head to rotate the soft brush head. By using the rotating soft brush head to brush the pipe body with the sprayed magnetic powder liquid, it can ensure that the magnetic powder liquid is evenly covered on the surface of the pipe body, so that the weld and the narrow or complex part are fully exposed, which helps the magnetic powder to better adsorb on the weld defects, improves the accuracy and comprehensiveness of the detection, and reduces the possibility of missed detection. At the same time, the design of the transmission assembly enables the soft brush head to rotate synchronously when the support mechanism supports and rotates the pipe body, without the need for an additional power source, which not only simplifies the operation process, but also reduces energy consumption.

[0008] Preferably, in order to realize the support and rotation of the pipe body, the support mechanism comprises a mounting seat fixedly arranged on the operation table corresponding to the position below the spray head, two roller shafts rotatably connected to the two mounting seats for supporting the pipe body, a connecting shaft rotatably connected to one side of the rack and fixedly connected to one of the roller shafts, and a motor fixedly arranged on the rack and fixedly connected to the connecting shaft. The soft brush head is located above one of the roller shafts. The combination of the two mounting seats, the two roller shafts, the connecting shaft and the motor can realize the support of the pipe body by the two roller shafts, and also enable the rotation of the pipe body.

[0009] Preferably, in order to realize the power transmission from the support mechanism to the soft brush head, the transmission assembly comprises a transmission shaft rotatably connected to the rack corresponding to the position above the connecting shaft and fixedly connected to one end of the soft brush head, two synchronous pulleys fixedly sleeved on the transmission shaft and the connecting shaft near the end of the rack, and a synchronous toothed belt arranged on the two synchronous pulleys. The two synchronous pulleys are connected and transmit power through the synchronous toothed belt. By using the synchronous pulley and the synchronous toothed belt in cooperation, power transmission from the support mechanism to the soft brush head can be realized. This design enables the soft brush head to brush while the pipe body is rotating, without the need for an additional power source, which not only simplifies the operation process, but also reduces energy consumption.

[0010] Preferably, in order to improve the protection of the synchronous pulley and the synchronous toothed belt, the transmission assembly further comprises a protective box fixedly arranged on the rack and covering the outside of the synchronous pulley and the synchronous toothed belt. The transmission shaft and the connecting shaft both penetrate through the protective box and are rotatably connected to the protective box. The arrangement of the protective box effectively protects the synchronous pulley and the synchronous toothed belt from the interference and damage of the external environment, which helps to prolong the service life of the transmission assembly.

[0011] Preferably, in order to reduce the splashing of the magnetic powder liquid, the magnetic powder detection device further comprises a protective member fixedly arranged on the operation table corresponding to the bristle brush head away from the side of the one roller shaft for blocking the magnetic powder liquid; the arrangement of the protective member blocks the bristle brush head from brushing the magnetic powder liquid on the surface of the pipe body, which can reduce the splashing and pollution of the magnetic powder liquid, and also helps to protect the safety of the operator.

[0012] Preferably, in order to achieve the blocking of the magnetic powder liquid, the protective member comprises supports symmetrically and fixedly arranged on the operation table and located at both ends of the bristle brush head, and a baffle fixedly arranged between the two supports and located on one side of the bristle brush head, and the bristle brush head is rotatably connected to the two supports at both ends, respectively; the design of the baffle can play a key role in blocking the magnetic powder liquid, and the two supports play a role in installing the baffle.

[0013] Preferably, in order to improve the practicability of the baffle, the baffle is a magnifying lens; the baffle of the magnifying lens not only has the function of blocking the magnetic powder liquid, but also can play a magnifying role when the operator needs to observe the pipe body with the naked eye, which helps the operator to see the defects around the weld more clearly.

[0014] The magnetic powder detection device for pipeline weld detection sprays the magnetic powder liquid on the surface of the pipe body through the rotation of the bristle brush head, which can ensure that the magnetic powder liquid can uniformly cover the surface of the pipe body, so that the weld and narrow or complex parts can be fully exposed, which helps the magnetic powder to better absorb at the weld defect, improves the accuracy and comprehensiveness of detection, and reduces the possibility of missed detection;

[0015] The magnetic powder detection device for pipeline weld detection can make the bristle brush head rotate synchronously when the support mechanism supports and rotates the pipe body through the design of the transmission assembly, without the need for an additional power source, which not only simplifies the operation process, but also reduces energy consumption;

[0016] The magnetic powder detection device for pipeline weld detection can block the bristle brush head from brushing the magnetic powder liquid on the surface of the pipe body through the design of the protective member, which can reduce the splashing and pollution of the magnetic powder liquid, and also helps to protect the safety of the operator;

[0017] The magnetic powder detection device for pipeline weld detection not only has the function of blocking the magnetic powder liquid through the design of the baffle of the magnifying lens, but also can play a magnifying role when the operator needs to observe the pipe body with the naked eye, which helps the operator to see the defects around the weld more clearly, and improves the practicability. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structural schematic view of a magnetic powder detection device for pipeline weld detection in Example 1;

[0019] Figure 2 This is a schematic diagram of the support mechanism and transmission assembly in Example 1;

[0020] Figure 3 This is a schematic diagram of the structure of a magnetic particle testing device for inspecting pipe welds in Example 2.

[0021] In the picture:

[0022] 1. Control panel;

[0023] 2. Rack;

[0024] 3. Support mechanism; 31. Mounting base; 32. Roller; 33. Connecting shaft; 34. Motor;

[0025] 4. Spray nozzle;

[0026] 5. Magnetic yoke flaw detector;

[0027] 6. Soft brush head;

[0028] 7. Transmission components; 71. Drive shaft; 72. Synchronous pulley; 73. Synchronous toothed belt; 74. Protective box;

[0029] 8. Protective components; 81. Brackets; 82. Baffles. Detailed Implementation

[0030] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application. Example

[0031] This embodiment provides a magnetic particle testing device for inspecting pipe welds, such as... Figures 1-2 As shown, the magnetic particle testing device includes an operating table 1, a frame 2 fixedly mounted on the operating table 1, a support mechanism 3 mounted on the operating table 1 for supporting and rotating the pipe body, a nozzle 4 fixedly mounted on the frame 2 for spraying magnetic powder liquid onto the pipe body, and a magnetic yoke flaw detector 5 fixedly mounted on the frame 2 above the nozzle 4. The magnetic particle testing device also includes a soft brush head 6 mounted on the operating table 1 above the support mechanism 3 for applying magnetic powder liquid to the surface of the pipe body, and a transmission assembly 7 mounted on the frame 2 for transmitting power from the support mechanism 3 to the soft brush head 6, causing the soft brush head 6 to rotate.

[0032] It should be added that the magnetic powder liquid sprayed by nozzle 4 is drawn and stored by a pump body and then transported to nozzle 4 through a pipeline.

[0033] The magnetic yoke flaw detector 5 utilizes electromagnetic principle, generates an alternating magnetic field or constant magnetic field near the surface of the measured material, magnetizes the material, and if there is a defect on the surface or near the surface of the material, the magnetic resistance at the defect increases, which produces magnetic leakage, the magnetic leakage forms a local magnetic field near the defect, the magnetic field attracts the magnetic powder, and the magnetic powder gathers at the defect to form a magnetic mark, and the shape, size and position of the magnetic mark can be observed to determine the nature, size and position of the defect.

[0034] In use, the pipe body to be detected is placed on the support mechanism 3, and the support mechanism 3 is started to drive the pipe body to rotate, and the spray head 4 is turned on to uniformly spray the magnetic powder liquid onto the surface of the rotating pipe body. Since the support mechanism 3 is connected to the transmission assembly 7, the support mechanism 3 drives the pipe body to rotate under the transmission of the transmission assembly 7, and the soft brush head 6 can also rotate synchronously, so that the soft brush head 6 can brush the magnetic powder liquid sprayed on the surface of the pipe body while rotating, ensuring that the magnetic powder liquid can fully cover the surface of the pipe body, especially the narrow or complex shape parts that are difficult to detect. After the magnetic powder liquid is sprayed, the spray head 4 is turned off, and the magnetic yoke flaw detector 5 generates a magnetic field to magnetize the pipe body. At this time, the magnetic powder applied to the surface of the workpiece can form a visually observable magnetic mark, thereby displaying the position, size and shape of the defect, so that the operator can observe the formation of the magnetic mark and record the defect information for subsequent analysis and processing.

[0035] Specifically, the support mechanism 3 includes mounting seats 31 fixedly installed on the operating table 1 at positions corresponding to below the spray head 4, roller shafts 32 rotatably connected to the two mounting seats 31 for supporting the pipe body, a connecting shaft 33 rotatably connected to one side of the rack 2 and fixedly connected to one of the roller shafts 32, and a motor 34 fixedly installed on the rack 2 and fixedly connected to the connecting shaft 33. The soft brush head 6 is located above one of the roller shafts 32.

[0036] The pipe body to be detected is placed between the two roller shafts 32, and the motor 34 is started to drive the connected connecting shaft 33 to rotate. Since the pipe body is frictionally connected to the two roller shafts 32, when the roller shaft 32 connected to the connecting shaft 33 rotates, the other roller shaft 32 also rotates synchronously. In this way, the pipe body continuously rotates between the two roller shafts 32, so that the spray head 4 sprays the magnetic powder liquid onto the surface of the pipe body while the pipe body is rotating. Then, the magnetic powder liquid will gather to form a magnetic mark along the defect on the surface of the pipe body under the action of the magnetic field generated by the magnetic yoke flaw detector 5, so as to determine whether there is a defect on the pipe body.

[0037] Furthermore, the transmission assembly 7 includes a transmission shaft 71 rotatably connected to the frame 2 at a position above the corresponding connecting shaft 33 and fixedly connected to one end of the soft brush head 6, synchronous pulleys 72 respectively fixedly sleeved on the transmission shaft 71 and the connecting shaft 33 near one end of the frame 2, and synchronous toothed belts 73 disposed on the two synchronous pulleys 72. The two synchronous pulleys 72 are connected and transmit power through the synchronous toothed belts 73.

[0038] When the starting motor 34 drives the connecting shaft 33 to rotate, and drives the two roller shafts 32 and the tubes on the two roller shafts 32 to rotate, since both the connecting shaft 33 and the transmission shaft 71 are connected to synchronous pulleys 72, and the two synchronous pulleys 72 are connected and transmit power through a synchronous toothed belt 73, when the connecting shaft 33 rotates, the synchronous pulleys 72 on it transmit power to the synchronous pulleys 72 on the transmission shaft 71 through the synchronous toothed belt 73, causing the synchronous pulleys 72 on the transmission shaft 71 to rotate. Therefore, when the synchronous pulleys 72 on the transmission shaft 71 rotate, they will drive the transmission shaft 71 to rotate. Since the transmission shaft 71 is fixedly connected to one end of the soft brush head 6, the rotation of the transmission shaft 71 will drive the soft brush head 6 to rotate synchronously. Thus, while the tube rotates, the soft brush head 6 will rotate synchronously and coat the magnetic powder liquid on the surface of the tube. This helps to ensure that the magnetic powder liquid can be evenly covered on the surface of the tube, especially in narrow or complex shapes that are difficult to detect, thereby improving the accuracy and comprehensiveness of the detection.

[0039] In order to improve the protection of the synchronous pulley 72 and the synchronous toothed belt 73, the transmission assembly 7 also includes a protective box 74 fixedly mounted on the frame 2 and covering the outside of the synchronous pulley 72 and the synchronous toothed belt 73. The transmission shaft 71 and the connecting shaft 33 both pass through the protective box 74 and are rotatably connected to the protective box 74. The protective box 74 effectively protects the synchronous pulley 72 and the synchronous toothed belt 73 from interference and damage from the external environment, which helps to extend the service life of the transmission assembly 7. Example

[0040] Unlike Example 1, as Figure 3 As shown, in order to reduce the splashing of magnetic powder liquid, the magnetic powder detection device also includes a protective component 8 fixedly installed on the operating table 1 on the side of the soft brush head 6 away from one of the rollers 32 to block the magnetic powder liquid. The protective component 8 includes a bracket 81 symmetrically fixedly installed on the operating table 1 and located at both ends of the soft brush head 6, and a baffle 82 fixedly installed between the two brackets 81 and located on one side of the soft brush head 6. The two ends of the soft brush head 6 are respectively rotatably connected to the two brackets 81.

[0041] When the rotating soft brush head 6 brushes the sprayed magnetic powder liquid on the pipe body, the baffle 82 erected between the two supports 81 can play a key role in blocking the magnetic powder liquid. Through the blocking of the baffle 82, the splashing of the magnetic powder liquid to the non-working area or the operation table 1 can be reduced. Embodiment

[0042] Different from Embodiments 1 and 2, in order to improve the practicability of the baffle 82, the baffle 82 is a magnifying lens. The baffle 82 with the magnifying lens not only has the function of blocking the magnetic powder liquid, but also can play a magnifying role when the operator needs to observe the pipe body with the naked eye, which helps the operator to see the defects around the weld more clearly.

[0043] The above is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this. Any skilled person in the art can make equivalent replacement or change according to the technical scheme and concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A magnetic particle testing device for inspecting pipe welds, comprising an operating table (1), a frame (2) fixedly mounted on the operating table (1), a support mechanism (3) mounted on the operating table (1) for supporting and rotating the pipe body, a nozzle (4) fixedly mounted on the frame (2) for spraying magnetic powder liquid onto the pipe body, and a magnetic yoke flaw detector (5) fixedly mounted on the frame (2) at a position corresponding to the nozzle (4). Its features are: The magnetic particle testing device further includes a soft brush head (6) disposed on the operating table (1) on the side above the support mechanism (3) for applying magnetic powder liquid to the surface of the tube, and a transmission component (7) disposed on the frame (2) for transmitting power from the support mechanism (3) to the soft brush head (6) to rotate the soft brush head (6).

2. The magnetic particle testing device for pipeline weld inspection according to claim 1, characterized in that: The support mechanism (3) includes a mounting base (31) symmetrically fixedly installed on the operating table (1) at a position corresponding to the position below the nozzle (4), rollers (32) rotatably connected to the two mounting bases (31) for supporting the tube body, a connecting shaft (33) rotatably connected to one side of the frame (2) and fixedly connected to one of the rollers (32), and a motor (34) fixedly installed on the frame (2) and fixedly connected to the connecting shaft (33). The soft brush head (6) is located above one of the rollers (32).

3. The magnetic particle testing device for pipeline weld inspection according to claim 2, characterized in that: The transmission assembly (7) includes a transmission shaft (71) rotatably connected to the frame (2) at a position corresponding to the connecting shaft (33) and fixedly connected to one end of the soft brush head (6), a synchronous pulley (72) fixedly sleeved on the transmission shaft (71) and the connecting shaft (33) near one end of the frame (2), and a synchronous toothed belt (73) disposed on the two synchronous pulleys (72). The two synchronous pulleys (72) are connected and transmit power through the synchronous toothed belt (73).

4. The magnetic particle inspection device for pipeline weld inspection according to claim 3, characterized in that: The transmission assembly (7) also includes a protective box (74) fixedly mounted on the frame (2) and covering the outside of the synchronous pulley (72) and the synchronous toothed belt (73). The transmission shaft (71) and the connecting shaft (33) both pass through the protective box (74) and are rotatably connected to the protective box (74).

5. The magnetic particle inspection device for pipeline weld inspection according to claim 2, characterized in that: The magnetic particle detection device also includes a protective component (8) fixedly installed on the operating table (1) on the side of the soft brush head (6) away from one of the rollers (32) to block the magnetic particle liquid.

6. The magnetic particle inspection device for pipeline weld inspection according to claim 5, characterized in that: The protective component (8) includes brackets (81) symmetrically fixedly installed on the operating table (1) and located at both ends of the soft brush head (6), and a baffle (82) fixedly installed between the two brackets (81) and located on one side of the soft brush head (6). The two ends of the soft brush head (6) are respectively rotatably connected to the two brackets (81).

7. The magnetic particle inspection device for pipeline weld inspection according to claim 6, characterized in that: The baffle (82) is a magnifying lens.

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