Nondestructive testing equipment for wall thickness of natural gas pipeline
By adopting arc clamps and guide ring structures in the natural gas pipeline wall thickness detection equipment, the stable fixation and circumferential sliding of the flaw detector is achieved, which solves the problem of low accuracy of detection results in the prior art and significantly improves the detection accuracy.
Patent Information
- Application Number
- CN202420351364.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-26
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-02-26
AI Technical Summary
Existing natural gas pipeline wall thickness testing equipment cannot accurately detect damage in key pipe sections of the pipeline, resulting in low accuracy of the detection results.
A non-destructive detection equipment for wall thickness of natural gas pipelines is designed, using arc clamps and guide ring structures. The installation of screws and cylinders to achieve stable fixation and surround sliding of the flaw detector, ensuring that the flaw detector can be inspected around the pipeline for comprehensive inspection.
Improve the accuracy and accuracy of pipeline inspection, making the non-destructive inspection results more reliable.
Smart Images
Figure CN222231619U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of pipeline detection, and more specifically, to a nondestructive detection device for the wall thickness of a natural gas pipeline. Background Art
[0002] A natural gas transmission pipeline refers to a pipeline that transports natural gas from the mining site or processing plant to the urban gas distribution center or industrial enterprise user. Natural gas transmission pipeline transportation has the advantages of low transportation cost, small land occupation, fast construction, large transportation volume, high safety performance, less transportation loss, low risk of leakage, and less pollution. It is the main way to transport natural gas today. However, during long-term use, the pipeline will induce wall thinning due to corrosion, erosion and other reasons, and even leak in severe cases, resulting in huge economic losses, environmental pollution and even casualties. Online long-term monitoring of the "critical" components in these pipelines, or multi-point measurement without removing the coating, is the best way to ensure their safety.
[0003] At present, in on-site maintenance, the buried layer of key pipe sections is mainly dug or the coating layer is removed, and then conventional non-destructive testing methods are used for testing. For example, the Chinese authorized patent application number CN202120752021.4 discloses "a pipeline in-service non-destructive testing device, characterized in that the testing device includes a waveguide rod and a clamping device, and the clamping device fixes the waveguide rod on the tested pipeline; the flange, proximal end face and distal end face of the waveguide rod are parallel to each other, and the side surface is perpendicular to the flange, proximal end face and distal end face";
[0004] This patent installs the "waveguide rod" on the "L-shaped clamp" through the "waveguide rod fixing bolt", and the "L-shaped clamp" is fixed to the "clamp" through the "tightening nut", which makes the "waveguide rod" maintain a fixed position. Since the "waveguide rod" is used to install the "flaw detector", the "flaw detector" can only detect fixed positions on the "pipeline", and the "pipeline" is a circular ring structure, and other positions also need to be detected. This detection method cannot accurately detect the damage of key sections of the "pipeline", and the accuracy of the detection results is low. Utility Model Content
[0005] In order to overcome the deficiencies of the prior art, the utility model provides a natural gas pipeline wall thickness nondestructive testing device, which has the advantage of high accuracy of the test result.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a natural gas pipeline wall thickness non-destructive testing equipment, comprising two positioning members, the two positioning members are installed in parallel on the pipeline, the positioning members include two arc clamps, the two arc clamps are both sleeved on the pipeline, connecting plates are fixedly installed at both ends of the two arc clamps, and connecting bolts are threadedly installed between the two connecting plates at the same end; mounting plates are fixedly installed on the outer sides of the two arc clamps, a mounting member is installed between the two mounting plates on the two arc clamps, and a detection member is installed on the mounting member for non-destructive testing of the pipeline.
[0007] As a preferred technical solution of the utility model, the mounting member includes a guide ring, both ends of the guide ring are fixedly mounted with fixing plates, the outer side of the fixing plate is fixedly mounted with mounting screws, and the mounting screws are connected to the corresponding mounting plates.
[0008] As a preferred technical solution of the present utility model, the fixing plate is an L-shaped structure.
[0009] As a preferred technical solution of the utility model, the mounting plate is provided with a plurality of positioning holes, and the plurality of positioning holes are evenly distributed along the vertical direction, and the mounting screw can cooperate with any one of the positioning holes.
[0010] As a preferred technical solution of the utility model, a mounting nut is threadedly mounted on the end of the mounting screw.
[0011] As a preferred technical solution of the utility model, the detection part includes a slider, and limit plates are fixedly installed on both sides of the slider. The slider is slidably installed between two guide rings, and the two limit plates are respectively fitted with the outer wall and inner wall of the guide ring. The slider and the two limit plates are both arc-shaped structures.
[0012] As a preferred technical solution of the utility model, a cylinder is fixedly installed on the outer side of one of the limit plates, and a flaw detector is fixedly installed on the output end of the cylinder, and the flaw detector can contact the pipeline.
[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0014] 1. The fixing plate and the mounting plate are fixed by matching the mounting screws on the fixing plate with the corresponding positioning holes on the mounting plate, and then the fixing nuts and the mounting screws are matched to fix the fixing plate and the guide rings. This ensures that the slider can be stably installed between the two guide rings, effectively avoiding the problem of the slider shaking when sliding along the guide rings.
[0015] 2. During the inspection, the slider is installed between the two guide rings. The two limit plates can prevent the slider from being separated from the guide rings. By controlling the cylinder, the flaw detector can be moved close to the pipeline and non-destructive testing can be performed on it. Then, the slider is moved to rotate circumferentially along the guide ring, which allows the slider to slide around the pipeline, so that the flaw detector can perform non-destructive testing around the pipeline. In this way, comprehensive testing of key sections of the pipeline can be achieved, which can greatly improve the detection accuracy of the pipeline, and make the non-destructive testing results of the pipeline more accurate. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the structure of the utility model;
[0017] Figure 2 It is a structural schematic diagram of the positioning member of the utility model;
[0018] Figure 3 It is a structural schematic diagram of the mounting member of the utility model;
[0019] Figure 4 It is a structural schematic diagram of the detection component of the utility model.
[0020] In the figure: 1. Positioning piece; 11. Arc clamp; 12. Connecting plate; 13. Connecting bolt; 14. Mounting plate; 15. Positioning hole; 2. Mounting piece; 21. Guide ring; 22. Fixing plate; 23. Mounting screw; 24. Mounting nut; 3. Detection piece; 31. Slider; 32. Limiting plate; 33. Cylinder; 34. Flaw detector; 4. Pipeline. DETAILED DESCRIPTION
[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0022] like Figures 1 to 4 As shown, the utility model provides a natural gas pipeline wall thickness non-destructive testing device, comprising two positioning members 1, the two positioning members 1 are parallelly mounted on the pipeline 4, the positioning member 1 comprises two arc clamps 11, the two arc clamps 11 are sleeved on the pipeline 4, both ends of the two arc clamps 11 are fixedly mounted with connecting plates 12, and a connecting bolt 13 is threadedly mounted between the two connecting plates 12 at the same end; the outer sides of the two arc clamps 11 are fixedly mounted with mounting plates 14, a mounting member 2 is mounted between the two mounting plates 14 on the two arc clamps 11, and a detection member 3 is mounted on the mounting member 2, which is used for performing non-destructive testing on the pipeline 4;
[0023] During installation, the arc clamp 11 is sleeved on the pipe 4, and then the two corresponding arc clamps 11 are fixed to the pipe 4 through the corresponding connecting bolts 13. This installation method can ensure that the arc clamp 11 can be installed on pipes 4 of different sizes, thereby improving the versatility of the installation of the arc clamp 11.
[0024] Among them, the mounting part 2 includes a guide ring 21, and both ends of the guide ring 21 are fixedly installed with a fixing plate 22, and the fixing plate 22 is an L-shaped structure; a mounting screw 23 is fixedly installed on the outer side of the fixing plate 22, and the mounting screw 23 is connected to the corresponding mounting plate 14; the mounting plate 14 is provided with a plurality of positioning holes 15, and the plurality of positioning holes 15 are equidistantly distributed along the vertical direction, and the mounting screw 23 can cooperate with any one of the positioning holes 15; the end of the mounting screw 23 is threadedly installed with a mounting nut 24.
[0025] By matching the mounting screw 23 on the fixing plate 22 with the corresponding positioning hole 15 on the mounting plate 14, and then matching the mounting nut 24 with the mounting screw 23 to keep the fixing plate 22 and the mounting plate 14 fixed, the guide ring 21 is fixed, which can ensure that the slider 31 can be stably installed between the two guide rings 21, and effectively avoid the problem of shaking of the slider 31 when sliding along the guide ring 21.
[0026] Among them, the detection part 3 includes a slider 31, and limit plates 32 are fixedly installed on both sides of the slider 31. The slider 31 is slidably installed between the two guide rings 21. The two limit plates 32 are respectively fitted with the outer wall and the inner wall of the guide ring 21. The slider 31 and the two limit plates 32 are both arc-shaped structures; a cylinder 33 is fixedly installed on the outer side of one of the limit plates 32, and a flaw detector 34 is fixedly installed on the output end of the cylinder 33, and the flaw detector 34 can contact the pipeline 4.
[0027] During inspection, the slider 31 is installed between the two guide rings 21, and the two limit plates 32 can prevent the slider 31 from being separated from the guide rings 21. By controlling the cylinder 33, the flaw detector 34 can be moved close to the pipeline 4 and non-destructive inspection can be performed on it; then the slider 31 is moved to rotate circumferentially along the guide ring 21, which allows the slider 31 to slide around the pipeline 4, so that the flaw detector 34 can surround the pipeline 4 and perform non-destructive inspection on it. In this way, comprehensive inspection of key sections of the pipeline 4 can be achieved, thereby greatly improving the inspection accuracy of the pipeline 4, and making the non-destructive inspection results of the pipeline 4 more accurate.
[0028] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.
[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A non-destructive testing device for the wall thickness of a natural gas pipeline, comprising two positioning members (1), the two positioning members (1) being installed in parallel on a pipeline (4), characterized in that: The positioning member (1) comprises two arc-shaped clamps (11), the two arc-shaped clamps (11) are both sleeved on the pipeline (4), connecting plates (12) are fixedly installed at both ends of the two arc-shaped clamps (11), and a connecting bolt (13) is threadedly installed between the two connecting plates (12) at the same end; a mounting plate (14) is fixedly installed on the outer side of the two arc-shaped clamps (11), a mounting member (2) is installed between the two mounting plates (14) on the two arc-shaped clamps (11), and a detection member (3) is installed on the mounting member (2) for performing non-destructive detection on the pipeline (4).
2. The nondestructive testing equipment for natural gas pipeline wall thickness according to claim 1 is characterized by: The mounting member (2) comprises a guide ring (21), both ends of the guide ring (21) are fixedly mounted with fixing plates (22), the outer side of the fixing plate (22) is fixedly mounted with a mounting screw (23), and the mounting screw (23) is connected to the corresponding mounting plate (14).
3. The nondestructive testing equipment for natural gas pipeline wall thickness according to claim 2 is characterized by: The fixing plate (22) is an L-shaped structure.
4. A natural gas pipeline wall thickness nondestructive testing device according to claim 3, characterized in that: The mounting plate (14) is provided with a plurality of positioning holes (15), and the plurality of positioning holes (15) are evenly distributed along the vertical direction, and the mounting screw rod (23) can be matched with any one of the positioning holes (15).
5. The nondestructive testing equipment for natural gas pipeline wall thickness according to claim 4 is characterized by: The end of the mounting screw rod (23) is threadedly mounted with a mounting nut (24).
6. The nondestructive testing equipment for natural gas pipeline wall thickness according to claim 5 is characterized by: The detection member (3) comprises a slider (31), and limit plates (32) are fixedly installed on both sides of the slider (31). The slider (31) is slidably installed between two guide rings (21), and the two limit plates (32) are respectively fitted with the outer wall and the inner wall of the guide ring (21). The slider (31) and the two limit plates (32) are both arc-shaped structures.
7. A natural gas pipeline wall thickness nondestructive testing device according to claim 6, characterized in that: A cylinder (33) is fixedly mounted on the outer side of one of the limit plates (32), and a flaw detector (34) is fixedly mounted on the output end of the cylinder (33), and the flaw detector (34) can be in contact with the pipeline (4).