Detection device for pipeline deformation

Abstract

The utility model provides a detection device for pipeline deformation, and relates to the field of pipeline deformation detection. The detection device comprises a base, a detection arm and an eddy current detection module, wherein the bottom of the detection arm is rotatably connected with the base, an induction metal sheet is arranged on the surface of the detection arm, the eddy current detection module is arranged on the base, and an eddy current coil is arranged in the eddy current detection module. And the detection arm deflects relative to the base along with the deformation of the pipeline to be detected, so that the cutting area of the induction metal sheet and the eddy current coil is changed for detection. According to the detection device, little signal interference is ensured, the detection sensitivity is high, and tiny pipeline deformation can be detected.

Description

Technical Field

[0001] The utility model relates to the field of pipeline deformation detection, and more specifically, to a detection device for pipeline deformation. Background Art

[0002] In the prior art, detecting pipeline deformation is an important guarantee for ensuring the safe transportation of media such as oil and gas, water, etc. When there are defects such as pipeline deformation, bending displacement, and corrosion, there are usage risks. Therefore, it is necessary to use a detection device for pipeline deformation to perform detection operations inside the pipeline to timely and accurately discover problems existing in the pipeline and extend the service life of the pipeline. However, the traditional detection device has relatively low detection accuracy and large signal interference, and can only detect large deformation areas of the pipeline. Therefore, there is an urgent need for a detection device for pipeline deformation that can ensure less signal interference and high detection sensitivity to detect subtle pipeline deformations. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a detection device for pipeline deformation to improve the above problems. To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0004] A detection device for pipeline deformation, the detection device includes: a base, a detection arm, and an eddy current detection module;

[0005] Wherein, the bottom of the detection arm is rotatably connected to the base, an induction metal sheet is arranged on the surface of the detection arm, the eddy current detection module is arranged on the base, an eddy current coil is arranged inside the eddy current detection module, and the detection arm deflects relative to the base as the pipeline to be detected deforms, so that the cutting area between the induction metal sheet and the eddy current coil changes for detection.

[0006] Preferably, it further includes an auxiliary detection module for detecting minute deformations and surface defects. The auxiliary detection module is rotatably arranged at the distal end of the detection arm, and an elastic member is further arranged between the auxiliary detection module and the detection arm to make the auxiliary detection module fit the pipeline to be detected.

[0007] Preferably, the auxiliary detection module includes a probe box and a detection sensor. The detection sensor is enclosed in the probe box, and a wear-resistant layer is arranged on the surface of the probe box for contacting the inner wall surface of the pipeline.

[0008] Preferably, a wear-resistant and anti-collision member is arranged at the distal end of the detection arm, and the auxiliary detection module is rotatably connected to the wear-resistant and anti-collision member.

[0009] Preferably, it includes an anti-collision protection member which is fixedly arranged outside the wear-resistant anti-collision member to protect the wear-resistant anti-collision member and the auxiliary detection module during the detection process.

[0010] Preferably, the eddy current detection module includes an installation housing, the eddy current coil is enclosed in the installation housing, and the installation housing is fixedly arranged on the base.

[0011] Preferably, a magnetic isolation layer is arranged on the outer surface of the eddy current coil, and the eddy current coil is enclosed in the installation housing through potting.

[0012] Preferably, an anti-collision limit part for preventing the detection arm from hitting is also arranged on the base, and the anti-collision limit part includes a mounting shaft connected to the base and a flexible sleeve sleeved on the mounting shaft.

[0013] Preferably, the bottom of the detection arm is rotatably connected to the base through a rotating shaft, and the axis of the rotating shaft is eccentrically arranged with respect to the position of the induction metal sheet.

[0014] Preferably, the detection arm is a non-metallic component.

[0015] The beneficial effects of the present utility model are as follows:

[0016] This detection device introduces a detection arm and an eddy current detection module. An induction metal sheet is arranged on the surface of the detection arm, and an eddy current coil is arranged in the eddy current detection module. When the detection arm deflects relative to the base along with the deformation of the pipeline to be detected, the cutting area between the induction metal sheet and the eddy current coil changes, so as to obtain corresponding eddy current response data. Then, engineers judge the pipeline deformation according to the eddy current response data. This detection device has less signal interference and high detection sensitivity, and can detect subtle pipeline deformations.

[0017] Other features and advantages of the present utility model will be described in the subsequent specification, and some of them will be obvious from the specification or understood by implementing the embodiments of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 It is a schematic diagram of the overall structure of this detection device;

[0020] Figure 2It is a schematic structural diagram of the eddy current detection module in the present utility model;

[0021] Figure 3 It is a schematic structural diagram of the abutting part and the mounting hole in the present utility model;

[0022] Figure 4 It is a schematic diagram of the elastic member being a torsion spring structure in the present utility model;

[0023] Markings in the figure:

[0024] 1. Base; 11. Abutting part; 12. Mounting hole; 2. Detection arm; 21. Inductive metal sheet; 3. Eddy current detection module; 31. Eddy current coil; 32. Mounting housing; 4. Auxiliary detection module; 5. Elastic member; 51. First limiting rod; 52. Second limiting rod; 6. Anti-collision limiting part; 8. Wear-resistant anti-collision part; 9. Anti-collision protection part. Specific embodiments

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments.

[0026] As Figure 1 shown, a detection device for pipeline deformation includes:

[0027] Base 1, detection arm 2, and eddy current detection module 3;

[0028] Among them, the bottom of the detection arm 2 is rotatably connected to the base 1. An inductive metal sheet 21 is provided on the surface of the detection arm 2. The eddy current detection module 3 is provided on the base 1. An eddy current coil 31 is provided in the eddy current detection module 3. The detection arm 2 deflects relative to the base 1 as the pipeline to be detected deforms, so that the cutting area between the inductive metal sheet 21 and the eddy current coil 31 changes for detection.

[0029] In the above device, when the cutting area between the inductive metal sheet 21 and the eddy current coil 31 changes, engineers judge the pipeline deformation based on the eddy current response data.

[0030] In this detection device, to further improve the detection of minute deformations and surface defects, an auxiliary detection module 4 for detecting minute deformations and surface defects is further included. The auxiliary detection module 4 is rotatably provided at the distal end of the detection arm 2. An elastic member 5 is further provided between the auxiliary detection module 4 and the detection arm 2, so that the auxiliary detection module 4 fits the pipeline to be detected.

[0031] At this time, this detection device includes an eddy current detection module 3 and an auxiliary detection module 4, which increases different index data of pipeline deformation, further facilitates the detection and analysis of subtle pipeline deformation, and improves the detection accuracy.

[0032] To clarify a specific structure of the auxiliary detection module 4, the auxiliary detection module 4 includes a probe box and a detection sensor. The detection sensor is enclosed in the probe box, and a wear-resistant layer is provided on the surface of the probe box for contacting the inner wall surface of the pipeline.

[0033] In the above structure, the wear-resistant layer can be made of wear-resistant materials such as high-alloy steel and ceramics, and the detection sensor can be enclosed in the probe box by potting or injection molding.

[0034] The detection sensor can be a magnetic sensor, an IMU sensor, an acceleration sensor, a gyroscope sensor, etc., or an eddy current coil. When the detection sensor collects the sensing signal, the pipeline state, deformation (micro deformation, weld, large deformation, etc.), roundness, elbow condition, inner surface defects of the pipeline, etc. can be judged according to the analysis of the sensing signal.

[0035] In this structure, to protect the auxiliary detection module 4, a wear-resistant and anti-collision part 8 is provided at the distal end of the detection arm 2, and the auxiliary detection module 4 is rotatably connected to the wear-resistant and anti-collision part 8.

[0036] Furthermore, it includes an anti-collision protection part 9, and the anti-collision protection part 9 is fixedly arranged outside the wear-resistant and anti-collision part 8 to protect the wear-resistant and anti-collision part 8 and the auxiliary detection module 4 during the detection process.

[0037] Preferably, the anti-collision protection part 9 can be set as an anti-collision sheet to prevent the situation of impacting and scratching the auxiliary detection module 4 when encountering large deformations and defects in the pipeline.

[0038] As Figure 2 shown, in this utility model, to clarify a specific structure of the eddy current detection module 3, the eddy current detection module 3 includes an installation housing 32, and the eddy current coil 31 is enclosed in the installation housing 32, and the installation housing 32 is fixedly arranged on the base 1.

[0039] Preferably, the outer layer of the installation housing 32 is provided with a non-metallic wrapping layer; the non-metallic wrapping layer can be made of materials such as ceramics and wear-resistant plastics.

[0040] In this detection device, to reduce signal interference and improve the detection accuracy, a magnetic isolation layer is provided on the outer surface of the eddy current coil 31, and the eddy current coil 31 is enclosed in the installation housing 32 by potting.

[0041] In addition, the eddy current coil 31 can also be enclosed in the installation housing 32 by injection molding.

[0042] In this structure, an anti-collision limit part 6 for preventing the detection arm 2 from hitting is further provided on the base 1. The anti-collision limit part 6 includes a mounting shaft connected to the base 1 and a flexible sleeve sleeved on the mounting shaft. At this time, this structure can prevent the detection arm 2 from being deformed or broken after a violent impact.

[0043] Preferably, the flexible sleeve is sleeved on the outer periphery of the mounting shaft.

[0044] As Figure 3 shown, a abutting part 11 and a mounting hole 12 are provided on the base 1. The mounting shaft is fixedly connected in the mounting hole 12. When the detection arm 2 rotates around the base 1 until the detection arm 2 abuts against the abutting part 11, an upper limit is formed. When the detection arm 2 rotates around the base 1 until the detection arm 2 abuts against the flexible sleeve of the mounting shaft, a lower limit is formed. The detection arm 2 rotates between the upper limit and the lower limit.

[0045] The bottom of the detection arm 2 is rotatably connected to the base 1 through a rotating shaft. To ensure the induction accuracy between the induction metal sheet 21 and the eddy current coil 31 and avoid interference of the eddy current signal at the rotating shaft, the axis of the rotating shaft is eccentrically arranged with respect to the position of the induction metal sheet 21. At this time, the signal accuracy is high, and the detection of pipeline deformation is more objective and real.

[0046] In the above structure, a copper sleeve or a ceramic pad sleeve can be added to the outer periphery of the rotating shaft to ensure the wear resistance and lubricity of the rotating shaft. In addition, a non-metallic pad sleeve such as nylon can also be selected.

[0047] To avoid signal interference of the detection arm 2 when the eddy current detection module 3 works, the detection arm 2 is preferably made of a non-metallic component.

[0048] As Figure 4 shown, in this detection device, the elastic member 5 is selected as a torsion spring structure. The elastic member 5 includes an elastic matrix, a first limiting rod 51 and a second limiting rod 52. The first limiting rod 51 and the second limiting rod 52 respectively extend on both sides of the elastic matrix. When the first limiting rod 51 abuts against the detection arm 2 and the second limiting rod 52 abuts against the inside of the auxiliary detection module 4, a supporting force is generated to keep the auxiliary detection module 4 in a state of being in close contact with the inner wall surface of the pipeline.

[0049] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, and all of them should be covered within the protection scope of the present invention.

Claims

1. A detection device for pipeline deformation, characterized in that, Comprising: a base (1), a detection arm (2), and an eddy current detection module (3); wherein, the bottom of the detection arm (2) is rotatably connected to the base (1), an induction metal sheet (21) is arranged on the surface of the detection arm (2), the eddy current detection module (3) is arranged on the base (1), an eddy current coil (31) is arranged in the eddy current detection module (3), and the detection arm (2) deflects relative to the base (1) with the deformation of the pipeline to be detected so that the cutting area between the induction metal sheet (21) and the eddy current coil (31) changes for detection.

2. The detection device for pipeline deformation according to claim 1, wherein It further includes an auxiliary detection module (4) for detecting minute deformations and surface defects. The auxiliary detection module (4) is rotatably arranged at the distal end of the detection arm (2), and an elastic member (5) is further arranged between the auxiliary detection module (4) and the detection arm (2) to make the auxiliary detection module (4) fit the pipeline to be detected.

3. The detection device for pipeline deformation according to claim 2, wherein, The auxiliary detection module (4) includes a probe box and a detection sensor. The detection sensor is enclosed in the probe box, and a wear-resistant layer is arranged on the surface of the probe box for contacting the inner wall surface of the pipeline.

4. The detection device for pipeline deformation according to claim 2, wherein A wear-resistant and anti-collision member (8) is arranged at the distal end of the detection arm (2), and the auxiliary detection module (4) is rotatably connected to the wear-resistant and anti-collision member (8).

5. The detection device for pipeline deformation according to claim 4, wherein, It includes an anti-collision protection member (9). The anti-collision protection member (9) is fixedly arranged outside the wear-resistant and anti-collision member (8) to protect the wear-resistant and anti-collision member (8) and the auxiliary detection module (4) during the detection process.

6. The detection device for pipeline deformation according to claim 1, characterized in that, The eddy current detection module (3) includes a mounting housing (32). The eddy current coil (31) is enclosed in the mounting housing (32), and the mounting housing (32) is fixedly arranged on the base (1).

7. The detection device for pipeline deformation according to claim 6, wherein, A magnetic isolation layer is arranged on the outer surface of the eddy current coil (31), and the eddy current coil (31) is enclosed in the mounting housing (32) by potting.

8. The detection device for pipeline deformation according to claim 1, wherein An anti-collision limit portion (6) for preventing the detection arm (2) from hitting is further arranged on the base (1). The anti-collision limit portion (6) includes a mounting shaft connected to the base (1) and a flexible sleeve sleeved on the mounting shaft.

9. The detection device for pipeline deformation according to claim 1, wherein, The bottom of the detection arm (2) is rotatably connected to the base (1) through a rotating shaft, and the axis of the rotating shaft is eccentrically arranged with respect to the position of the induction metal sheet (21).

10. A detection device for pipeline deformation according to any one of claims 1 to 9, characterized in that, The detection arm (2) is a non-metallic component.

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