Pipeline detection equipment

Abstract

The utility model relates to pipeline detection equipment, belongs to the technical field of pipeline detection, and solves the problem that most existing pipeline detection equipment is of a multi-section structure and cannot detect small-caliber pipelines. The pipeline detection equipment comprises a cylinder body, the outer wall of the cylinder body is provided with first installation sites and second installation sites, and the first installation sites and the second installation sites are alternately arranged; and the detectors are arranged on the first mounting site and the second mounting site. According to the utility model, the detectors are arranged at different sites of the cylinder body, so that high-precision detection of the pipeline can be completed in the small-caliber pipeline.

Description

Technical Field

[0001] This utility model relates to the field of pipeline inspection technology, and in particular to a pipeline inspection device. Background Technology

[0002] Pipeline inspection technology is an important means of evaluating pipeline integrity. In existing technologies, pipeline detectors are mostly multi-section structures. However, due to pipeline conditions, especially for small-diameter pipelines, these detectors do not have the conditions for launching and receiving multiple sections, making it impossible to perform internal inspections on small-diameter pipelines.

[0003] Therefore, a miniaturized pipeline inspection device is designed to perform high-precision inspection of pipelines in small-diameter pipes. Utility Model Content

[0004] Based on the above analysis, the present invention aims to provide a pipeline inspection device to solve the technical problem that existing pipeline detectors are large in structure and cannot inspect small-diameter pipelines.

[0005] The objective of this utility model is mainly achieved through the following technical solutions:

[0006] A pipeline inspection device, comprising:

[0007] The cylindrical body includes a first mounting point and a second mounting point disposed on its outer wall; a plurality of the first mounting points are evenly disposed on the first outer circumference of the cylindrical body, and a plurality of the second mounting points are evenly disposed on the second outer circumference of the cylindrical body, wherein the first mounting points and the second mounting points are alternately disposed.

[0008] The detector is disposed at the first mounting site and the second mounting site.

[0009] Furthermore, the cylinder has an internal cavity for accommodating air.

[0010] Furthermore, it also includes hatches;

[0011] An opening communicating with the accommodating cavity is provided on the end face of the cylinder near the first mounting point; the hatch is located at the position of the opening.

[0012] Furthermore, it also includes a mileage wheel, which is disposed on the end face of the cylinder away from the hatch.

[0013] Furthermore, it also includes a power cup and a support cup disposed on the cylinder;

[0014] The power cup is located between the hatch and the first mounting point;

[0015] The support cup is located between the odometer wheel and the second mounting point.

[0016] Furthermore, the detector includes:

[0017] The mounting bracket is fixed to the first mounting point or the second mounting point;

[0018] The first detection element is mounted on the mounting bracket;

[0019] Second inspection item;

[0020] A connecting rod assembly, one end of which is hinged to the mounting bracket, and the other end of which is fixed to the second detection element.

[0021] Furthermore, the connecting rod assembly includes:

[0022] A first connecting rod, one end of which is hinged to the mounting bracket, and the other end of which is hinged to the second detection element;

[0023] A second connecting rod, one end of which is hinged to the first detection element; the first connecting rod and the second connecting rod are arranged in parallel.

[0024] A third connecting rod, one end of which is hinged to the other end of the first connecting rod, and the other end of which is hinged to the other end of the second connecting rod.

[0025] Furthermore, the connecting rod assembly also includes

[0026] A first rotating shaft, one end of the first connecting rod is hinged to the mounting bracket to the first rotating shaft;

[0027] The second rotating shaft, the other end of the second connecting rod is hinged to the other end of the third connecting rod to the second rotating shaft;

[0028] The spring has its two ends respectively located on the first rotating shaft and the second rotating shaft.

[0029] Furthermore, the second detection element includes a connector, a housing, and a second detection unit disposed on the outer end face of the housing;

[0030] One end of the connector is hinged to the other end of the first connecting rod, and the other end of the connector is fixed to the housing.

[0031] Furthermore, the number of the first mounting site and the second mounting site is 12.

[0032] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0033] (1) The pipeline inspection equipment of this utility model includes a cylinder and a detector installed on the cylinder; it has a cylinder structure. When inspecting small-diameter pipelines, in order to meet the conditions of small-diameter pipelines, the diameter of the cylinder is small. Multiple first installation points and multiple second installation points are respectively set on the two outer circumferences of the cylinder. The detector is staggered on the first installation points and the second installation points. It is suitable for inspecting small-diameter pipelines while ensuring the accuracy and precision of the inspection.

[0034] (2) The pipeline inspection equipment of this utility model has two types of detection components on the detector. When the detection equipment is running in the pipeline, when there is geometric deformation in the inner wall of the pipeline, the first connecting rod swings at a certain angle with the deformation, which in turn drives the second connecting rod to swing at a certain angle. The first detection component records the change of the angle between the second connecting rod and the pipeline axis, and obtains the distance between the second connecting rod and the inner wall of the pipeline when it is pressed down or relaxed, thus obtaining the deformation data of the inner wall of the pipeline. The detection unit of the second detection component is attached to the inner wall of the pipeline to detect whether there are defects in the pipeline wall. When inspecting small-diameter pipelines, two types of defects in the pipeline can be detected in one inspection.

[0035] (3) The pipeline inspection equipment of this utility model has a simple structure and low cost. Each component adopts a rigid structure and has corrosion-resistant mechanical properties, which can overcome the harsh working conditions inside the pipeline.

[0036] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages will become apparent from the description or be learned by practicing this invention. The objectives and other advantages of this invention can be realized and obtained from the details specifically pointed out in the text and accompanying drawings. Attached Figure Description

[0037] The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Throughout the drawings, the same reference numerals denote the same parts.

[0038] Figure 1 This is a schematic diagram of the structure of a pipeline inspection device according to a specific embodiment;

[0039] Figure 2 This is a front view schematic diagram of the cylinder and detector in a pipeline inspection device according to a specific embodiment;

[0040] Figure 3 for Figure 2 The diagram shows the left-side view of a specific embodiment.

[0041] Figure label:

[0042] 1-Cylinder body; 11-First mounting point; 12-Second mounting point; 2-Detector; 21-Mounting bracket; 22-First detection component; 23-Second detection component; 231-Connector; 232-Housing shell; 233-Second detection unit; 24-Connecting rod assembly; 241-First connecting rod; 242-Second connecting rod; 243-Third connecting rod; 244-First rotating shaft; 245-Second rotating shaft; 246-Spring; 3-Cover; 4-Odometer wheel; 5-Power cup; 6-Support cup. Detailed Implementation

[0043] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0044] A specific embodiment of this utility model is as follows: Figures 1 to 3 As shown, a pipeline inspection device is disclosed, comprising:

[0045] The cylindrical body 1 includes a first mounting point 11 and a second mounting point 12 disposed on its outer wall; a plurality of first mounting points 11 are evenly disposed on the first outer circumference of the cylindrical body 1, and a plurality of second mounting points 12 are evenly disposed on the second outer circumference of the cylindrical body 1, wherein the first mounting points 11 and the second mounting points 12 are alternately disposed.

[0046] Detector 2 is disposed at the first mounting site 11 and the second mounting site 12.

[0047] In this embodiment, the pipeline inspection equipment includes a cylindrical body 1 and detectors 2 mounted on the cylindrical body 1. To accommodate the inspection of small-diameter pipelines, a section of the cylindrical body 1 is provided, and the diameter of the cylindrical body 1 is small. Detectors 2 are arranged around the cylindrical body 1 on two circumferences, and are evenly distributed on the inner circumference of the pipeline to be inspected, ensuring the required number of inspection points and achieving accurate inspection of small-diameter pipelines. Figure 3 As shown, the projections of the detectors 2, which are staggered on the two circumferences, on the end face form a circle. The detectors 2 can fit well against the inner wall of the pipe and complete the all-round detection of the inner wall of the pipe.

[0048] In this embodiment, the cylinder 1 has an internal cavity for receiving air.

[0049] The cavity contains other electrical components for detection, such as trajectory mapping instruments and power supplies.

[0050] The embodiment also includes a hatch 3;

[0051] The end face of the cylinder 1 near the first mounting point 11 has an opening that connects to the accommodating cavity; the hatch cover 3 is located at the opening.

[0052] In this embodiment, a mileage wheel 4 is also included, which is disposed on the end face of the cylinder 1 away from the hatch 3.

[0053] In this embodiment, a power cup 5 and a support cup 6 are also provided on the cylindrical body 1;

[0054] The power cup 5 is located between the hatch 3 and the first mounting point 11;

[0055] The support cup 6 is located between the mileage wheel 4 and the second mounting point 12.

[0056] In this embodiment, the pipeline inspection device forms a seal with the pipe wall through the power cup 5, and obtains power to move forward by the pressure difference. The mileage wheel 4 moves with the pipeline inspection device in the pipeline and measures the distance traveled by the pipeline inspection device by rotating.

[0057] In this embodiment, the detector 2 includes:

[0058] Mounting bracket 21 is fixed to the first mounting point 11 or the second mounting point 12;

[0059] The first detection element 22 is disposed on the mounting bracket 21;

[0060] Second inspection item 23;

[0061] A connecting rod assembly 24, one end of which is hinged to the mounting bracket, and the other end of which is fixed to the second detection element 23.

[0062] A first detection element 22 and a second detection element 23 are set on detector 2. The pipeline inspection equipment runs once inside the pipeline to complete the detection of two types of pipeline defects. The second detection element 23 is attached to the inner wall of the pipeline. When the primary coil inside the second detection element 23 is energized, eddy currents are generated on the pipeline surface under electromagnetic induction. The induced magnetic field generated by the eddy currents acts on the secondary coil to induce a voltage. The magnitude of the induced voltage is related to the size and shape of the defect. When there is a defect in the pipe wall, the magnetic flux through the secondary coil changes, causing a change in the induced voltage. Based on the induced voltage spectrum, the pipeline defect data can be obtained quickly and accurately. At the same time, when there is deformation in the pipeline, the connecting rod assembly 24 is pressed down or expanded with the deformation of the pipeline. The first detection element 22 detects the change in the distance between the connecting rod assembly 24 and the pipe wall and calculates the magnitude of the deformation. This achieves the purpose of simultaneously completing pipeline deformation detection and electromagnetic eddy current detection in one inspection.

[0063] In this embodiment, the connecting rod assembly 24 includes:

[0064] The first connecting rod 241 has one end hinged to the mounting bracket 21 and the other end hinged to the second detection element 23.

[0065] The second connecting rod 242 has one end hinged to the first detection element 22; the first connecting rod 241 and the second connecting rod 242 are arranged in parallel.

[0066] The third connecting rod 243 has one end hinged to the other end of the first connecting rod 241, and the other end hinged to the other end of the second connecting rod 242.

[0067] In this embodiment, the connecting rod assembly 24 further includes

[0068] The first rotating shaft 244, one end of the first connecting rod 241 is hinged to the mounting bracket 21 to the first rotating shaft 244;

[0069] The second rotating shaft 245, and the other end of the second connecting rod 242 is hinged to the other end of the third connecting rod 243 to the second rotating shaft 245;

[0070] Spring 246, with its two ends respectively located on the first rotating shaft 244 and the second rotating shaft 245.

[0071] Using the first rotating shaft 244 and the second rotating shaft 245, the first connecting rod 241, the second connecting rod 242, and the third connecting rod 243 are hinged to form three sides of a parallelogram. Springs 246 are set on the diagonals of this parallelogram, namely the first rotating shaft 244 and the second rotating shaft 245, forming a rotatable elastic mechanical swing arm. The shape of the inner wall of the pipe directly affects the angle between the first connecting rod 241 and the pipe axis. When the shape of the pipe changes, the other end of the first connecting rod 241 swings, which in turn drives the second connecting rod 242 to swing. The first detection element 22 detects the changes in the second connecting rod 242 and records the changes in the angle between the second connecting rod 242 and the pipe axis, thereby obtaining the distance between the second connecting rod 242 and the pipe wall when it is pressed down or expanded, and then calculating the magnitude of the deformation.

[0072] In this embodiment, the second detection element 23 includes a connector 231, a housing 232, and a second detection unit 233 disposed on the outer end face of the housing 232;

[0073] One end of the connector 231 is hinged to the other end of the first connecting rod 241, and the other end of the connector 231 is fixed to the housing 232.

[0074] The other end of the connector 231 is fixed to the housing 232 by screws.

[0075] In this embodiment, there are 12 first mounting sites 11 and 12 second mounting sites 12.

[0076] Taking the detection of a 10-inch small-diameter pipe as an example, a total of 12 detectors 2 are set on the first installation point 11 and the second installation point 12. The 12 detectors 2 can evenly and completely cover the inner circumference of the pipe, so as to achieve accurate detection.

[0077] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pipeline inspection device, characterized in that, include: The cylindrical body (1) includes a first mounting point (11) and a second mounting point (12) disposed on its outer wall; a plurality of the first mounting points (11) are evenly disposed on the first outer circumference of the cylindrical body (1), and a plurality of the second mounting points (12) are evenly disposed on the second outer circumference of the cylindrical body (1), and the first mounting points (11) and the second mounting points (12) are alternately disposed; The detector (2) is disposed at the first mounting site (11) and the second mounting site (12).

2. The pipeline inspection equipment according to claim 1, characterized in that, The cylinder (1) has an internal cavity for receiving air.

3. The pipeline inspection equipment according to claim 2, characterized in that, It also includes the hatch cover (3); The cylinder (1) has an opening on its end face near the first mounting point (11) that connects to the accommodating cavity; the hatch cover (3) is located at the opening.

4. The pipeline inspection equipment according to claim 3, characterized in that, It also includes a mileage wheel (4), which is disposed on the end face of the cylinder (1) away from the hatch (3).

5. The pipeline inspection equipment according to claim 4, characterized in that, It also includes a power cup (5) and a support cup (6) disposed on the cylinder (1); The power cup (5) is located between the hatch (3) and the first mounting point (11); The support cup (6) is located between the mileage wheel (4) and the second mounting point (12).

6. The pipeline inspection equipment according to claim 1, characterized in that, The detector (2) includes: Mounting bracket (21) is fixed to the first mounting point (11) or the second mounting point (12); The first detection element (22) is installed on the mounting bracket (21); Second test piece (23); A connecting rod assembly (24), one end of which is hinged to the mounting bracket, and the other end of which is fixed to the second detection element (23).

7. The pipeline inspection equipment according to claim 6, characterized in that, The connecting rod assembly (24) includes: The first connecting rod (241) is hinged at one end to the mounting bracket (21) and at the other end to the second detection element (23); The second connecting rod (242) has one end hinged to the first detection element (22); the first connecting rod (241) and the second connecting rod (242) are arranged in parallel. The third connecting rod (243) has one end hinged to the other end of the first connecting rod (241) and the other end hinged to the other end of the second connecting rod (242).

8. The pipeline inspection equipment according to claim 7, characterized in that, The connecting rod assembly (24) also includes The first rotating shaft (244) has one end of the first connecting rod (241) hinged to the mounting bracket (21) to the first rotating shaft (244); The second rotating shaft (245) is connected to the second rotating shaft (245) by hinge at the other end of the second connecting rod (242) and the other end of the third connecting rod (243). A spring (246) has its two ends respectively located on the first rotating shaft (244) and the second rotating shaft (245).

9. The pipeline inspection equipment according to claim 8, characterized in that, The second detection component (23) includes a connector (231), a housing (232), and a second detection unit (233) disposed on the outer end face of the housing (232); One end of the connector (231) is hinged to the other end of the first connecting rod (241), and the other end of the connector (231) is fixed to the housing (232).

10. The pipeline inspection equipment according to claim 1, characterized in that, The number of the first mounting site (11) and the second mounting site (12) is 12.

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