Magnetic flux leakage detector in natural gas pipe
By introducing an adjustment component into the natural gas pipeline magnetic leakage detector, the problem of insufficient pulley adjustment is solved, the adaptability and accuracy of the detector are improved, and the operating difficulty and cost are reduced.
Patent Information
- Application Number
- CN202422257575.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-14
- Publication Date
- 2025-09-12
- Estimated Expiration
- 2034-09-14
AI Technical Summary
The pulley of the existing natural gas pipeline magnetic leakage detector lacks adjustment function, resulting in poor adaptability of the detector in different pipelines, obstructed operation, reduced detection accuracy, and increased detection difficulty and cost.
A magnetic flux leakage detector for natural gas pipelines was designed. By setting an adjustment component on the detector, including a fixed plate, a guide rod, a bearing, a bidirectional screw, a transmission plate and a pulley, the pulley can be adjusted and replaced to adapt to different pipeline sizes and improve the adaptability and accuracy of the detector.
The pulley can be flexibly adjusted and replaced, which improves the adaptability and detection accuracy of the detector in different pipelines and reduces the operation difficulty and cost for the staff.
Smart Images
Figure CN223331404U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of pipeline detection, in particular to a natural gas pipeline internal magnetic leakage detector. Background Art
[0002] With the widespread laying and use of natural gas pipelines, pipeline safety issues have become increasingly prominent. Since pipelines operate in complex environments for a long time, they are easily affected by factors such as corrosion, mechanical damage, cracks, deformation and third-party damage, leading to safety accidents such as pipeline leakage. These accidents will not only cause huge economic losses, but may also pose a threat to the environment and human life. In order to solve the pipeline safety problem, magnetic flux leakage detection technology has come into being. Magnetic flux leakage detection is a non-destructive testing technology that uses the principle that the magnetic field is deformed by the increase of magnetic resistance at the defect of ferromagnetic materials in the magnetized state. By measuring the leakage magnetic field signal, it is determined whether there are defects inside the pipeline. The existing natural gas pipeline magnetic flux leakage detector can basically meet daily use needs, but there are still some shortcomings that need to be improved.
[0003] Existing magnetic flux leakage detectors for natural gas pipelines are usually equipped with multiple sets of pulleys. As key components for the detector's operation within the pipeline, the pulleys are responsible for supporting the detector and enabling it to move smoothly along the inner wall of the pipeline. However, the pulleys usually lack adjustment functions, resulting in poor adaptability, obstructed operation, and reduced detection accuracy when the detector is applied to different pipelines. These problems not only limit the widespread application of the detector, but also increase the difficulty and cost of pipeline inspection. To this end, we propose a natural gas pipeline magnetic flux leakage detector to address the above problems. Utility Model Content
[0004] The purpose of the present invention is to provide a magnetic flux leakage detector for natural gas pipes to solve the problems raised in the above background technology.
[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a magnetic flux leakage detector for natural gas pipes, comprising a detector, a drive unit, a power supply unit and a universal joint, wherein the drive unit is provided on the left side of the detector, the power supply unit is provided on the right side of the detector, universal joints are provided between the detector, the drive unit and the power supply unit, and the drive unit and the power supply unit are provided with an adjustment component, the adjustment component comprises a fixed disk provided on the outer wall of the drive unit and the power supply unit, a plurality of guide rods are provided on the surface of the fixed disk on the side facing away from the detector, and the outer wall of the guide rods is provided with a plurality of guide rods. They are all provided with mounting plates, and bearings are provided at the middle position of the fixed plates, and bidirectional screw rods are provided on the bearings, and the bidirectional screw rods rotate in the mounting plates, and brake discs are provided on the outer walls of the bidirectional screw rods, and two sets of transmission discs are slid on the guide rods, and the transmission discs are threadedly connected to the bidirectional screw rods, and four sets of fixed seats are provided on the outer walls of the transmission discs, and rotating rods are rotated in the fixed seats, and the two sets of rotating rods are staggered in design, and connecting blocks are rotated in the two sets of rotating rods, and the connecting blocks are provided with hinge shafts, and pulleys are provided on the surface of the connecting blocks on the side facing away from the guide rods.
[0006] As a further preferred embodiment of the present technical solution, the surface of the brake disc is provided with anti-slip grooves, and the surface of the brake disc may also be covered with a rubber sleeve.
[0007] As a further preferred embodiment of the present technical solution, four groups of guide rods are provided, and the four groups of guide rods are designed to be equally spaced.
[0008] As a further preferred embodiment of the present technical solution, the pulley is also connected to the connecting block through a connecting component, and the connecting component includes an assembly seat arranged on the surface of the connecting block, a plug-in block is plugged into the assembly seat, a pulley is provided on the outer wall of the plug-in block, a spring groove is provided on the surface of the plug-in block, a spring is provided on the inner wall of the spring groove, a limiting block is fixed at the other end of the spring, and the limiting block slides in the spring groove, and a limiting groove is provided on the inner wall of the assembly seat corresponding to the outer end surface of the limiting block.
[0009] As a further preferred embodiment of the present technical solution, the limit block is designed to be rectangular, the spring slot is provided as a through hole matching the limit block, and the limit block and the spring slot are both adapted to each other.
[0010] As a further preferred embodiment of the present technical solution, the spring is arranged at a middle position on the inner wall of the spring groove, one end of the spring is welded to the inner wall of the spring groove, and the other end of the spring is welded to the inner wall of the limit block.
[0011] As a further preferred embodiment of the present technical solution, the outer end surface of the limit block is ground, and the outer wall of the limit block is fitted with the inner wall of the limit groove.
[0012] The utility model provides a natural gas pipeline magnetic leakage detector, which has the following beneficial effects:
[0013] 1. The utility model drives the bidirectional screw to rotate on the bearing through the brake disc, and then makes the bidirectional screw act on the transmission disc, so that the two sets of transmission discs move on the bidirectional screw and the guide rod and gather toward the middle of the bidirectional screw, and then drives the pulley to fit the inner wall of the pipe through the two sets of rotating rods and the connecting block, so as to achieve the purpose of adjusting the pulley, so that the pulley drives the detector to be suitable for pipes of different sizes, thereby effectively improving the adaptability and detection accuracy of the detector.
[0014] 2. The utility model provides a detachable connection block, which makes it easy for the staff to replace any group of pulleys separately, while reducing the difficulty of disassembling and assembling the pulleys, and further improving the work efficiency of the staff in replacing the pulleys. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;
[0016] Figure 2 It is a schematic diagram of the three-dimensional cross-sectional structure of the utility model;
[0017] Figure 3 It is a schematic diagram of the partial cross-sectional structure of the utility model;
[0018] Figure 4 For the utility model Figure 2 A schematic diagram of the enlarged structure at point A;
[0019] Figure 5 For the utility model Figure 3 Schematic diagram of the enlarged structure at point B.
[0020] In the figure: 1. Detector; 2. Drive unit; 3. Power supply unit; 4. Universal joint; 5. Pulley; 6. Adjustment assembly; 61. Fixed plate; 62. Guide rod; 63. Mounting plate; 64. Bearing; 65. Bidirectional screw; 66. Brake disc; 67. Transmission disc; 68. Fixed seat; 69. Rotating rod; 610. Connecting block; 611. Articulated shaft; 7. Connecting assembly; 71. Assembly seat; 72. Plug-in block; 73. Spring slot; 74. Spring; 75. Limit block; 76. Limit slot. DETAILED DESCRIPTION
[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.
[0022] The utility model provides a technical solution: Figures 1 to 5As shown, in this embodiment, a magnetic flux leakage detector for a natural gas pipeline includes a detector 1, a drive unit 2, a power supply unit 3 and a universal joint 4. The drive unit 2 is provided on the left side of the detector 1, and the power supply unit 3 is provided on the right side of the detector 1. Universal joints 4 are provided between the detector 1, the drive unit 2 and the power supply unit 3. The drive unit 2 and the power supply unit 3 are both provided with an adjustment component 6. The adjustment component 6 includes a fixed disk 61 provided on the outer wall of the drive unit 2 and the power supply unit 3. A plurality of guide rods 62 are provided on the surface of the fixed disk 61 facing away from the detector 1. The outer wall of the guide rod 62 is provided with a mounting disk 63. Bearings 64 are provided at the intermediate positions, and bidirectional screw rods 65 are provided on the bearings 64. The bidirectional screw rods 65 rotate in the mounting plate 63. A brake disc 66 is provided on the outer wall of the bidirectional screw rods 65. Two sets of transmission discs 67 are slid on the guide rods 62, and the transmission discs 67 are threadedly connected to the bidirectional screw rods 65. Four sets of fixed seats 68 are provided on the outer wall of the transmission discs 67. A rotating rod 69 is rotated in the fixed seat 68. The two sets of rotating rods 69 are staggered in design. A connecting block 610 is rotated in the two sets of rotating rods 69. A hinge shaft 611 is provided on the connecting block 610. A pulley 5 is provided on the surface of the connecting block 610 on the side away from the guide rod 62.
[0023] The brake disc 66 drives the bidirectional screw 65 to rotate on the bearing 64, and then the bidirectional screw 65 acts on the transmission disc 67, so that the two sets of transmission discs 67 move on the bidirectional screw 65 and the guide rod 62 and gather towards the middle of the bidirectional screw 65, and then the pulley 5 is driven to fit the inner wall of the pipe through the two sets of rotating rods 69 and the connecting block 610, so as to achieve the purpose of adjusting the pulley 5, so that the pulley 5 drives the detector 1 to be suitable for pipes of different sizes, thereby effectively improving the adaptability and detection accuracy of the detector 1.
[0024] In other embodiments, the surface of the brake disc 66 is provided with anti-slip grooves, and the surface of the brake disc 66 may also be covered with a rubber sleeve;
[0025] This design can increase the friction between the worker's hand and the brake disc 66, so that when the worker uses the brake disc 66 to rotate the bidirectional screw rod 65, it can be more stable and quick, preventing the worker from slipping.
[0026] In other embodiments, four groups of guide rods 62 are provided, and the four groups of guide rods 62 are designed with equal spacing;
[0027] Through this design, through the precise matching of the four sets of guide rods 62, it can be ensured that the transmission disk 67 moves on the guide rods 62 according to the predetermined trajectory and path, reducing errors and deviations and meeting the requirements of high-precision translational motion.
[0028] In other embodiments, the pulley 5 is further connected to the connecting block 610 through a connecting assembly 7. The connecting assembly 7 includes an assembly seat 71 provided on the surface of the connecting block 610. A plug-in block 72 is plugged into the assembly seat 71. The outer wall of the plug-in block 72 is provided with a pulley 5. A spring groove 73 is provided on the surface of the plug-in block 72. A spring 74 is provided on the inner wall of the spring groove 73. The other end of the spring 74 is fixed with a limit block 75, and the limit block 75 slides in the spring groove 73. A limit groove 76 is provided on the inner wall of the assembly seat 71 corresponding to the outer end surface of the limit block 75.
[0029] When coupling with latch 74 , latch 7 is secured in place and the latches 75 are in a state of being turned away from the engagement of the coupling 72 , the engagement of the coupling 72 with the engagement of the support 74 are restored.
[0030] In other embodiments, the limit block 75 is designed in a rectangular shape, and the spring slot 73 is provided as a through hole matching the limit block 75 , and the limit block 75 and the spring slot 73 are both adapted;
[0031] This design allows the limit block 75 to fit the spring slot 73 on multiple sides, thereby effectively reducing the possibility that the limit block 75 will shake when sliding in the spring slot 73 and then get stuck in the spring slot 73 and be unable to slide.
[0032] In other embodiments, the spring 74 is disposed at a middle position on the inner wall of the spring slot 73 , one end of the spring 74 is welded to the inner wall of the spring slot 73 , and the other end of the spring 74 is welded to the inner wall of the limit block 75 ;
[0033] This design allows the elastic force of the spring 74 to be evenly output to the limit block 75, preventing one side of the limit block 75 from receiving excessive elastic force, which would cause the limit block 75 to be stuck in the spring slot 73 and unable to slide.
[0034] In other embodiments, the outer end surface of the limiting block 75 is ground, and the outer wall of the limiting block 75 fits in with the inner wall of the limiting groove 76;
[0035] This design can prevent the staff from slipping when pressing the limit block 75 into the spring groove 73 by hand, causing the limit block 75 to slide back to its original position under the elastic force of the spring 74, and then requiring the staff to repeat the operation of the limit block 75.
[0036] The utility model provides a natural gas pipeline magnetic leakage detector, the specific working principle is as follows:
[0037] When in use, first place the detector 1 in the pipeline, then rotate the brake disc 66 to drive the bidirectional screw 65 to rotate on the bearing 64, and then make the bidirectional screw 65 act on the transmission disc 67, so that the two sets of transmission discs 67 move on the bidirectional screw 65 and the guide rod 62 and gather toward the middle of the bidirectional screw 65, and then drive the two sets of rotating rods 69 through the transmission disc 67, so that the two sets of rotating rods 69 cooperate with the hinge shaft 611 to squeeze the connecting block 610, and make the connecting block 610 drive the pulley 5 to fit the inner wall of the pipeline, and then inject natural gas into the pipeline to make the natural gas push the detector 1, so that the detector 1 drives the pulley 5 to move in the pipeline, and then the pipeline is detected by the detector 1.
[0038] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A magnetic flux leakage detector for a natural gas pipeline, comprising a detector (1), a drive unit (2), a power supply unit (3) and a universal joint (4), wherein the drive unit (2) is provided on the left side of the detector (1), the power supply unit (3) is provided on the right side of the detector (1), and a universal joint (4) is provided between the detector (1), the drive unit (2) and the power supply unit (3), and wherein: The drive unit (2) and the power supply unit (3) are both provided with an adjustment assembly (6), and the adjustment assembly (6) includes a fixed disk (61) provided on the outer wall of the drive unit (2) and the power supply unit (3), and a plurality of guide rods (62) are provided on the surface of the fixed disk (61) on the side facing away from the detector (1), and a mounting disk (63) is provided on the outer wall of the guide rod (62), and a bearing (64) is provided at the middle position of the fixed disk (61), and a bidirectional screw rod (65) is provided on the bearing (64), and the bidirectional screw rod (65) rotates in the mounting disk (63). 5) A brake disc (66) is provided on the outer wall, two sets of transmission discs (67) are slidably provided on the guide rod (62), and the transmission discs (67) are threadedly connected to the bidirectional screw rod (65), and four sets of fixed seats (68) are provided on the outer wall of the transmission disc (67), and rotating rods (69) are rotated in the fixed seats (68), and the two sets of rotating rods (69) are designed to be staggered. Connecting blocks (610) are rotated in the two sets of rotating rods (69), and the connecting blocks (610) are provided with hinge shafts (611). A pulley (5) is provided on the surface of the connecting block (610) on the side away from the guide rod (62).
2. A natural gas pipeline magnetic flux leakage detector according to claim 1, characterized in that: The surface of the brake disc (66) is provided with anti-skid patterns, and the surface of the brake disc (66) can also be provided with a rubber sleeve.
3. The natural gas pipeline magnetic flux leakage detector according to claim 1, characterized in that: Four groups of guide rods (62) are provided, and the four groups of guide rods (62) are all designed with equal spacing.
4. The natural gas pipeline magnetic flux leakage detector according to claim 1, characterized in that: The pulley (5) is also connected to the connecting block (610) through a connecting assembly (7). The connecting assembly (7) includes an assembly seat (71) arranged on the surface of the connecting block (610). A plug-in block (72) is inserted into the assembly seat (71). The outer wall of the plug-in block (72) is provided with a pulley (5). The surface of the plug-in block (72) is provided with a spring groove (73). The inner wall of the spring groove (73) is provided with a spring (74). The other end of the spring (74) is fixed with a limit block (75), and the limit block (75) slides in the spring groove (73). The inner wall of the assembly seat (71) corresponding to the outer end surface of the limit block (75) is provided with a limit groove (76).
5. The natural gas pipeline magnetic flux leakage detector according to claim 4, characterized in that: The limiting block (75) is designed to be rectangular, and the spring slot (73) is provided as a through hole that matches the limiting block (75). The limiting block (75) and the spring slot (73) are both adapted to each other.
6. The natural gas pipeline magnetic flux leakage detector according to claim 4, characterized in that: The spring (74) is arranged at a middle position on the inner wall of the spring slot (73), one end of the spring (74) is welded to the inner wall of the spring slot (73), and the other end of the spring (74) is welded to the inner wall of the limit block (75).
7. The natural gas pipeline magnetic flux leakage detector according to claim 4, characterized in that: The outer end surface of the limiting block (75) is subjected to a grinding process, and the outer wall of the limiting block (75) is fitted with the inner wall of the limiting groove (76).