Pipeline detection auxiliary device and pipeline detection device
By designing a pipeline detection auxiliary device, the scanner moves along the outer periphery of the cylinder, solving the problem that the scanner cannot maintain parallel movement in the prior art, and achieving efficient detection of pipeline defects under the insulation layer.
Patent Information
- Application Number
- CN202421081873.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-17
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2034-05-17
AI Technical Summary
When detecting defects of metal pipes under the insulation layer, the scanner cannot remain parallel to the pipeline surface to be detected when moving to the aluminum leather overlap, resulting in poor detection results.
Design a pipeline detection auxiliary device, including two bent plates, rotating connectors and fixing members, the bent plates are integrated into a cylinder, and adapted to the overlapping portion of the insulation layer through the adapter portion, so that the cylinder is parallel to the pipeline, and sweeps the The inspector moves along the periphery of the cylinder to achieve parallel detection.
It effectively solves the problem that the scanner cannot maintain parallel movement at the overlapping point of the aluminum leather, improves the accuracy and effect of detection, and ensures reliable detection of pipeline defects under the insulation layer.
Smart Images
Figure CN222527439U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of metal pipeline defect detection under a thermal insulation layer, and in particular to a pipeline detection auxiliary device and a pipeline detection device. Background Art
[0002] When using pipelines to transport high-temperature or low-temperature media, an insulation layer is often added to the outside of the transport pipeline in order to reduce energy dissipation. However, in actual applications, if the waterproof and insulation materials are not installed properly, or the outer protective layer of the insulation layer is damaged or degraded during use, it is possible that external moisture will penetrate, causing the insulation material to become damp or wet, and gradually forming a humid corrosive environment between the insulation layer and the outer surface of the metal, causing corrosion on the outer surface of the equipment under the insulation layer, i.e., corrosion under the insulation layer.
[0003] When removing the insulation layer to inspect the corrosion damage of the pipeline, the removal and restoration of the outer packaging is expensive and time-consuming, and sometimes requires the system equipment to be shut down. At the same time, the inspection method of removing the insulation layer may cause the insulation layer to be damaged, the anti-corrosion layer of the pipeline under the insulation layer to be damaged, and the insulation reinstallation quality does not meet the standards, thereby causing unnecessary losses.
[0004] Off-plane electromagnetic eddy current technology is a non-destructive testing technology that uses the principle of electromagnetic induction to detect defects by measuring the changes in induced eddy currents in the workpiece to be inspected. The amplitude, phase, flow form and associated magnetic field of the induced eddy currents in the conductor are affected by the physical properties of the conductor. Its supporting equipment mainly includes display and control systems, connecting cables and scanners. The scanner can transmit electromagnetic signals outside the insulation layer and receive feedback signals from the pipeline under the insulation layer, and use the signals for detection and analysis. Off-plane electromagnetic eddy current technology can achieve the purpose of pipeline defect detection under the insulation layer without removing the insulation. However, in order to ensure effective signal reception, the scanner is required to move parallel to the pipeline, and the moving surface of the scanner needs to remain parallel to the pipeline surface to be inspected during the process. However, the overlap of aluminum foil will cause the scanner to move to this position and cannot maintain parallel movement, and thus cannot achieve a good detection effect. Utility Model Content
[0005] In view of the above shortcomings of the prior art, the utility model provides a pipeline detection auxiliary device to improve the technical problem that the existing scanner cannot remain parallel to the pipeline surface to be detected when moving to the overlap of the aluminum sheet, thereby causing inaccurate detection or failure to detect.
[0006] To achieve the above-mentioned purpose and other related purposes, the utility model provides a pipeline detection auxiliary device for auxiliary detection of pipelines coated with an insulation layer, including two bending plates, the two bending plates are combined to form a cylinder; a rotating connecting piece, respectively connecting the two bending plates so that the two bending plates are rotatably connected, and the rotation axes of the two bending plates are parallel to the axis of the cylinder; a fixing piece, at least arranged on one of the bending plates, to fix the two bending plates when the bending plates are combined into the cylinder; an adapter, arranged on the inner wall of the cylinder, the adapter being adapted to the overlapping portion of the insulation layer so that the cylinder is parallel to the pipeline.
[0007] In one embodiment of the present application, the adapter portion includes a protrusion disposed on the inner wall of the cylinder, and the height of the protrusion is the same as the height of the circumferential overlap portion of the thermal insulation layer protruding from the thermal insulation layer.
[0008] In one embodiment of the present application, the protrusion is an annular protrusion, and a notch is provided on the protrusion. The notch penetrates the annular protrusion along the axial direction of the cylinder, and the width of the notch is not less than the width of the axial overlap portion of the insulation layer.
[0009] In one embodiment of the present application, the protrusion is an arc-shaped protrusion, and a plurality of the arc-shaped protrusions are arranged on the inner wall of the cylinder along the circumference of the cylinder; the spacing between at least two of the arc-shaped protrusions is not less than the width of the axial overlap portion of the insulation layer.
[0010] In one embodiment of the present application, the adapter portion includes a first groove arranged on the inner wall of the cylinder, the first groove is arranged around the circumference of the inner wall of the cylinder, the depth of the first groove is not less than the height of the circumferential overlap portion of the insulation layer protruding from the insulation layer, and the width of the first groove is not less than the width of the circumferential overlap portion.
[0011] In one embodiment of the present application, a second groove arranged parallel to the axis of the cylinder is provided on the inner wall of the cylinder, and the second groove penetrates the cylinder along the axis of the cylinder; the depth of the second groove is not less than the height of the axial overlap portion of the insulation layer protruding from the insulation layer, and the width of the second groove is not less than the width of the axial overlap portion.
[0012] In one embodiment of the present application, the fixing member includes two magnetic strips, and the two magnetic strips are respectively arranged at one end of the two curved plates away from the rotating connecting member.
[0013] In one embodiment of the present application, a mounting groove is provided at one end of the bending plate away from the rotating connecting member, and the magnetic strip is embedded in the mounting groove.
[0014] In one embodiment of the present application, the rotating connection member includes two hinge pieces and a rotating shaft rotatably connected to at least one of the hinge pieces, the two hinge pieces are respectively arranged on two curved plates, and the curved plates are rotatably connected around the rotating shaft.
[0015] The present application also provides a pipeline detection device, comprising: the pipeline detection auxiliary device described in any one of the above; and a scanner, wherein the scanner moves along the outer periphery of the cylinder of the pipeline detection auxiliary device.
[0016] The beneficial effects of the utility model are:
[0017] In the existing pipeline inspection process, when the scanner moves to the overlap of the aluminum sheet, it cannot maintain parallel movement with the pipeline surface to be inspected, and thus cannot achieve a good inspection effect. The present application is provided with two rotatably connected bending plates, which enclose a cylinder when closed, and the adapter part is adapted to the overlap part, so that the cylinder is parallel to the pipeline, and the scanner moves along the outer surface of the cylinder, so that the scanner moves parallel to the plane of the pipeline to be inspected, reducing inspection interference and improving inspection effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0019] Figure 1 This is a schematic diagram of an exemplary pipeline detection auxiliary device of the present application;
[0020] Figure 2 This is a schematic diagram of another angle of an exemplary pipeline detection auxiliary device of the present application;
[0021] Figure 3 for Figure 2 A magnified image of the middle A area;
[0022] Figure 4 This is a schematic diagram of an exemplary curved plate of the present application.
[0023] Component number description
[0024] 10. Cylinder;
[0025] 100, bent plate; 110, annular protrusion; 120, notch; 130, mounting groove;
[0026] 200, rotating connecting member; 210, hinge piece; 220, rotating shaft; 230, mounting hole;
[0027] 300. Fixing parts. DETAILED DESCRIPTION
[0028] The following describes the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and the features in the embodiments can be combined with each other without conflict. It should also be understood that the terms used in the embodiments of the present invention are intended to describe specific implementation schemes, rather than to limit the scope of protection of the present invention. The test methods for which specific conditions are not specified in the following examples are usually carried out under conventional conditions or under the conditions recommended by the manufacturers.
[0029] When numerical ranges are given in the embodiments, it should be understood that unless otherwise specified in the present invention, both endpoints of each numerical range and any value between the two endpoints can be selected. Unless otherwise defined, all technical and scientific terms used in the present invention are in accordance with the prior art mastery of those skilled in the art and the description of the present invention, and any prior art methods, equipment and materials similar or equivalent to the methods, equipment and materials in the embodiments of the present invention can also be used to implement the present invention.
[0030] It should be noted that the terms such as "upper", "lower", "left", "right", "middle" and "one" cited in this specification are only for the convenience of description and are not used to limit the scope of implementation of the present utility model. Changes or adjustments to their relative relationships should be regarded as the scope of implementation of the present utility model without substantially changing the technical content.
[0031] See also Figure 1 to Figure 4The utility model provides a pipeline detection auxiliary device, which is used for auxiliary detection of pipelines coated with a thermal insulation layer. The pipeline detection auxiliary device includes two bending plates 100, a rotating connector 200, and a fixing member 300. The two bending plates 100 are rotatably connected. When the two bending plates 100 are closed, they form a cylinder 10. The two bending plates 100 are switched between the open and closed states. The bending plates 100 can be sleeved on the outer periphery of the thermal insulation layer to cover the overlapping portion on the thermal insulation layer. The outer peripheral surface of the cylinder 10 is parallel to the outer peripheral surface of the pipeline to be detected. The scanner moves along the outer periphery of the cylinder 10 to detect pipeline defects at the overlapping portion, thereby realizing detection of the overlapping portion without removing the thermal insulation layer, and solving the problem that the overlapping and nearby positions cannot be inspected in the application of off-surface electromagnetic eddy current technology in the detection of metal pipeline defects under the thermal insulation layer. The rotating connector 200 connects the two bending plates 100 respectively, so that the two bending plates 100 are rotatably connected. Preferably, the rotation axis of the two bending plates 100 is parallel to the axis of the cylinder 10, so as to facilitate the sleeve of the cylinder 10 on the insulation layer. The fixing member 300 is provided on at least one bending plate 100 to fix the two bending plates 100 when the bending plates 100 are combined into the cylinder 10. When the two bending plates 100 are closed to form the cylinder 10, the two bending plates 100 are relatively fixed by the fixing member 300 to prevent the two bending plates 100 from opening during use and causing the problem of falling off the insulation layer. The adapter is provided on the inner wall of the cylinder 10, and the adapter is adapted to the overlapped part of the insulation layer so that the cylinder 10 is parallel to the pipeline. By providing the adapter on the inner wall of the cylinder 10, the cylinder 10 is parallel or substantially parallel to the pipeline to be detected, so that the scanner is parallel or substantially parallel to the pipeline to be detected when moving along the outer circumference of the cylinder 10, thereby improving the detection effect and obtaining more accurate detection results.
[0032] In an embodiment of the pipeline detection auxiliary device, the adapter includes a protrusion disposed on the inner wall of the cylinder 10, and the height of the protrusion is the same as the height of the circumferential overlap portion of the insulation layer protruding from the insulation layer. When the cylinder 10 is sleeved on the insulation layer, the protrusion presses on the insulation layer, and the circumferential overlap portion of the insulation layer abuts against the inner side of the cylinder 10, so that the cylinder 10 is parallel to the insulation layer, and thus the cylinder 10 is parallel to the pipeline to be detected, so that the scanner can move along the outer circumference of the cylinder 10 to detect the pipeline to be detected.
[0033] See also Figure 1 to Figure 4In one embodiment of a pipeline detection auxiliary device, the raised portion is an annular protrusion 110, and the annular protrusion 110 is circumferentially arranged around the inner wall of the cylinder 10. A notch 120 is arranged on the raised portion, and the notch 120 penetrates the annular protrusion 110 along the axial direction of the cylinder 10, and the width of the notch 120 is not less than the width of the axial overlapping portion of the thermal insulation layer. The overlapping portion of the thermal insulation layer includes a circumferential overlapping portion and an axial overlapping portion. The circumferential overlapping portion is arranged around the circumference of the thermal insulation layer, and the axial overlapping portion is arranged along the axial direction parallel to the thermal insulation layer. The annular protrusion 110 increases the contact area with the thermal insulation layer and improves the parallelism between the cylinder 10 and the pipeline to be detected. By providing the notch 120 on the annular protrusion 110, it is possible to avoid the annular protrusion 110 from pressing against the axial overlapping portion, thereby preventing the problem of the cylinder 10 not closing tightly and improving the parallelism between the cylinder 10 and the pipeline to be detected. Furthermore, a plurality of notches 120 may be provided, and a plurality of notches 120
[0034] In another embodiment of the pipeline detection auxiliary device, the protrusion is an arc-shaped protrusion, and a plurality of arc-shaped protrusions are arranged on the inner wall of the cylinder 10 along the circumference of the cylinder 10, and the thickness of the arc-shaped protrusion is consistent with the height of the circumferential overlap portion above the insulation layer. Preferably, there are no less than three arc-shaped protrusions, and the arc-shaped protrusions are arranged in an array along the circumference of the cylinder 10 on the inner wall of the cylinder 10 to ensure that the arc-shaped protrusions can be pressed against the insulation layer, thereby supporting the cylinder 10 and ensuring the parallelism between the cylinder 10 and the pipeline to be detected. Exemplarily, three arc-shaped protrusions can be provided, and the angle between the three arc-shaped protrusions is 120°, and four arc-shaped protrusions can also be provided, and the angle between the four arc-shaped protrusions is 90°. The spacing between at least two arc-shaped protrusions is not less than the width of the axial overlap portion of the insulation layer, and the circumferential overlap portion can be accommodated between the two arc-shaped protrusions, so that the arc-shaped protrusions are pressed against the insulation layer, and the circumferential overlap portion and the axial overlap portion are pressed against the inner wall of the cylinder 10, thereby improving the parallelism of the cylinder 10 and the pipeline to be inspected.
[0035] In another embodiment of the pipeline detection auxiliary device, the adapter includes a first groove arranged on the inner wall of the cylinder 10, the first groove is arranged around the circumference of the inner wall of the cylinder 10, the depth of the first groove is not less than the height of the circumferential overlap of the insulation layer protruding from the insulation layer, and the width of the first groove is not less than the width of the circumferential overlap. When the cylinder 10 is sleeved on the insulation layer, the circumferential overlap on the insulation layer is inserted into the first groove, so that the insulation layer fits the inner wall of the cylinder 10, so that the cylinder 10 is parallel to the insulation layer, so that the cylinder 10 is parallel to the pipeline to be detected, so that the scanner moves along the cylinder 10 to inspect the pipeline to be detected. Further, a second groove arranged along the inner wall of the cylinder 10 is arranged parallel to the axis of the cylinder 10, and the second groove penetrates the cylinder 10 along the axis of the cylinder 10; the depth of the second groove is not less than the height of the axial overlap of the insulation layer protruding from the insulation layer, and the width of the second groove is not less than the width of the axial overlap. When the bending plate 100 is sleeved outside the insulation layer, the second groove accommodates the axial overlap portion, so that the cylinder 10 is close to the insulation layer, the parallelism between the cylinder 10 and the pipeline to be detected is improved, and the detection accuracy is improved.
[0036] In an embodiment of a pipeline detection auxiliary device, the fixing member 300 includes two magnetic strips, which are respectively arranged at one end of the two bending plates 100 away from the rotating connecting member 200. When the two bending plates 100 are closed, the suction force between the two magnetic strips keeps the two bending plates 100 in a closed state, thereby preventing the two bending plates 100 from rotating relative to each other, reducing the occurrence of the cylinder 10 separating from the insulation layer, and improving the convenience of use.
[0037] See also Figure 4 In an embodiment of a pipeline detection auxiliary device, a mounting groove 130 is provided at one end of the bending plate 100 away from the rotating connection member 200, and the magnetic strip is embedded in the mounting groove 130, which not only ensures that the two magnetic strips attract each other so that the two bending plates 100 are relatively fixed, but also prevents the magnetic strip from protruding from the mounting groove 130, resulting in the bending plate 100 not being closed tightly. Furthermore, the surface of the magnetic strip is flush with the end of the bending plate 100 away from the rotating connection member 200.
[0038] See also Figure 2 and Figure 3In an embodiment of a pipeline detection auxiliary device, the rotating connector 200 includes two hinge pieces 210 and a rotating shaft 220 to which at least one hinge piece 210 is rotatably connected. The two hinge pieces 210 are respectively arranged on two bending plates 100, and the bending plates 100 are rotatably connected around the rotating shaft 220. Preferably, a rotating shaft 220 is arranged on one of the hinge pieces 210, and a through hole is arranged on the other hinge piece 210. The rotating shaft 220 is inserted into the through hole, and the rotating shaft 220 is rotatably connected with the through hole, so as to realize the rotatable connection of the two bending plates 100. Furthermore, a plurality of mounting holes 230 are arranged on the hinge piece 210, and screws penetrate the mounting holes 230 to fix the hinge piece 210 on the bending plate 100, so as to realize the fixed connection between the hinge piece 210 and the bending plate 100.
[0039] The present application also provides a pipeline detection device, which includes any of the above pipeline detection auxiliary devices and a scanner, and the scanner moves along the outer circumference of the cylinder 10 of the pipeline detection auxiliary device, thereby solving the problem that the overlap and nearby positions cannot be inspected in the application of off-surface electromagnetic eddy current technology in the defect detection of metal pipelines under the insulation layer. The pipeline detection device also includes components such as a display device, please refer to the prior art, and this application will not elaborate on this.
[0040] The utility model pipeline detection auxiliary device can be set on the outside of the insulation pipeline with overlapping parts, so that the scanner can be moved along the outer surface of the device, the scanner is parallel to the plane to be inspected, and the stability of the scanner movement process is improved. The scanner can obtain the information of the pipeline to be inspected under the insulation layer, and realize the detection of the pipeline with overlapping parts without removing the insulation, which solves the problem that the overlapping parts and nearby positions cannot be inspected in the application of off-surface electromagnetic eddy current technology in the defect detection of metal pipelines under the insulation layer. Therefore, the utility model effectively overcomes some practical problems in the prior art and has a high utilization value and use significance. The above embodiments are only illustrative of the principles and effects of the utility model, and are not used to limit the utility model. Anyone familiar with this technology can modify or change the above embodiments without violating the spirit and scope of the utility model. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the relevant technical field without departing from the spirit and technical ideas disclosed by the utility model should still be covered by the claims of the utility model.
Claims
1. A pipeline detection auxiliary device, used for auxiliary detection of pipelines coated with a thermal insulation layer, characterized in that: include: There are two curved plates, and the two curved plates are combined to form a cylinder; A rotating connecting member, respectively connecting the two curved plates, so that the two curved plates are rotationally connected, and the rotation axes of the two curved plates are parallel to the axis of the cylinder; A fixing member, at least provided on one of the curved plates, to fix the two curved plates when the curved plates are combined into the cylinder; An adapting portion is arranged on the inner wall of the cylinder, and the adapting portion is adapted to the overlapping portion of the thermal insulation layer so that the cylinder is parallel to the pipeline.
2. The pipeline detection auxiliary device according to claim 1, characterized in that: The adapter portion includes a protrusion disposed on the inner wall of the cylinder, and the height of the protrusion is the same as the height of the circumferential overlap portion of the thermal insulation layer protruding from the thermal insulation layer.
3. The pipeline detection auxiliary device according to claim 2, characterized in that: The protrusion is an annular protrusion, and a notch is arranged on the protrusion. The notch penetrates the annular protrusion along the axial direction of the cylinder, and the width of the notch is not less than the width of the axial overlap portion of the thermal insulation layer.
4. The pipeline detection auxiliary device according to claim 2, characterized in that: The protrusion is an arc-shaped protrusion, and a plurality of the arc-shaped protrusions are arranged on the inner wall of the cylinder along the circumference of the cylinder; the distance between at least two of the arc-shaped protrusions is not less than the width of the axial overlap portion of the thermal insulation layer.
5. The pipeline detection auxiliary device according to claim 1, characterized in that: The adapter portion includes a first groove arranged on the inner wall of the cylinder, the first groove is arranged around the circumference of the inner wall of the cylinder, the depth of the first groove is not less than the height of the circumferential overlap portion of the insulation layer protruding from the insulation layer, and the width of the first groove is not less than the width of the circumferential overlap portion.
6. The pipeline detection auxiliary device according to claim 5, characterized in that: A second groove parallel to the axis of the cylinder is provided on the inner wall of the cylinder, and the second groove penetrates the cylinder along the axis of the cylinder; the depth of the second groove is not less than the height of the axial overlap portion of the insulation layer protruding from the insulation layer, and the width of the second groove is not less than the width of the axial overlap portion.
7. The pipeline detection auxiliary device according to claim 1, characterized in that: The fixing member comprises two magnetic strips, and the two magnetic strips are respectively arranged at one end of the two bending plates away from the rotating connecting member.
8. The pipeline detection auxiliary device according to claim 7, characterized in that: An installation groove is arranged at one end of the bending plate away from the rotating connecting member, and the magnetic strip is embedded in the installation groove.
9. The pipeline detection auxiliary device according to claim 1, characterized in that: The rotating connection member includes two hinge pieces and a rotating shaft rotatably connected to at least one of the hinge pieces. The two hinge pieces are respectively arranged on two curved plates, and the curved plates are rotatably connected around the rotating shaft.
10. A pipeline detection device, characterized in that: include: The pipeline detection auxiliary device according to any one of claims 1 to 9; A scanner moves along the outer periphery of the cylinder of the pipeline detection auxiliary device.