A pipeline defect detection probe

Abstract

The utility model provides a kind of pipeline defect detection probe, including probe body and limiting component, the limiting component is installed on probe body and is used to support and limit for probe body;The limiting component is set along the circumferential direction of the probe body, the limiting component includes first flexible member and the second flexible member being connected with the first flexible member, the first flexible member is rotationally connected with the probe body at the end away from second flexible member;The first flexible member and second flexible member are all inclined to be arranged, and the included angle formed between the first flexible member and the probe body axis;The utility model can solve the surveying device recorded in the prior art when surveying in different pipe diameters, water flow will cause impact to detection device;Make that detection sensor deviates from pipe axis, cause the distance between detection sensor and pipe wall unstable, affect signal coupling efficiency while also leading to the problem of detection blind area.

Description

Technical Field

[0001] This utility model relates to the field of pipeline inspection technology, specifically a pipeline defect detection probe. Background Technology

[0002] Pipelines are essential facilities for transporting liquids and gases, and are widely used in water supply, drainage, heating, gas supply, long-distance transportation of oil and natural gas, agricultural irrigation, water conservancy projects, and various industrial installations. After prolonged use, pipelines are prone to varying degrees of damage and deformation, leading to reduced transportation efficiency, increased losses due to leaks during transportation, and serious safety hazards. Therefore, it is necessary to conduct regular pipeline inspections to ensure the integrity of pipelines and the safety of the surrounding area, reduce pipeline operation and management risks, and minimize the occurrence of operational accidents.

[0003] Currently, pipeline robots used in research by various countries consist of a main body and a detection system. Due to their limited application and scope, they are insufficient for detecting all sewage pipelines in use. Furthermore, they cannot perform detection when sewage is being transported through the pipeline. To address the problems existing in the prior art, utility model CN216046175U discloses a visual online surveying robot for sewage pipelines (hereinafter referred to as Prior Art 1), including a propeller, snap ring, sampling plate, counterweight chamber, traction cable, foam float, plastic bearing, LED lighting, water-dividing rudder plate, infrared ranging plate, and camera. The water-dividing rudder plate is located on the top of the main body, and a plastic bearing is installed at the tail end of the main body. The plastic bearing is embedded with a propeller, and the propeller's interior is embedded with magnetic beads. The robot is used to detect the divided pipe sections. The surveying device described in prior art 1 can be used to survey sewage pipes in use, with long service time and accurate detection; however, when the surveying device described in prior art is used to survey pipes of different diameters, the water flow will impact the detection device, causing the detection sensor to deviate from the pipe axis, resulting in unstable distance between the detection sensor and the pipe wall, affecting signal coupling efficiency and also causing detection blind spots. Utility Model Content

[0004] The purpose of this invention is to provide a pipeline defect detection probe that, in practical use, can solve the problem that when existing detection devices are used to detect defects in pipelines of different diameters, the water flow will impact the detection device, causing the detection sensor to deviate from the pipeline axis, resulting in unstable distance between the detection sensor and the pipe wall, affecting signal coupling efficiency, and also causing detection blind spots.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A pipeline defect detection probe includes a probe body and a limiting component, wherein the limiting component is mounted on the probe body and is used to support and limit the probe body; The limiting component is arranged along the circumferential direction of the probe body. The limiting component includes a first flexible member and a second flexible member connected to the first flexible member. The end of the first flexible member away from the second flexible member is rotatably connected to the probe body. Both the first flexible member and the second flexible member are inclined, and the angle formed between the first flexible member and the axis of the probe body is smaller than the angle formed between the second flexible member and the axis of the probe body.

[0006] Preferably, a plurality of connecting rings are detachably mounted on the probe body, and the first flexible member is rotatably connected to the connecting rings.

[0007] Preferably, the probe body includes a flexible connector and a battery compartment, a transmitting coil compartment, and a receiving coil compartment connected sequentially through the flexible connector, and the limiting components are equally spaced along the circumferential direction of the battery compartment, the transmitting coil compartment, and the receiving coil compartment.

[0008] Preferably, the battery compartment, the transmitting coil compartment, and the receiving coil compartment are provided with clearance grooves corresponding to the first flexible member.

[0009] Preferably, the battery compartment, the transmitting coil compartment, and the receiving coil compartment are detachably connected to the connector.

[0010] Preferably, a drive ring is slidably mounted on the battery compartment, and a drive mechanism for driving the drive ring to move is mounted on the battery compartment.

[0011] Preferably, the drive ring is provided with a guide ramp.

[0012] Preferably, the battery compartment is equipped with a camera and a light.

[0013] Compared with the prior art, the present invention has the following beneficial effects: In this utility model, during the detection process, the first and second flexible components of the limiting component adjust the contact state between the limiting component and the inner wall of the pipe through elastic deformation and rotation of the first flexible component, according to the pipe diameter and water flow conditions. The probe body is stably supported and limited, keeping the probe body near the pipe axis and ensuring a stable distance between the detection sensor and the pipe wall. By making the angle between the first flexible element and the probe body axis smaller than the angle between the second flexible element and the probe body axis, the first and second flexible elements can be made into a variable-angle segmented structure. This variable-angle segmented structure is steeper near the root of the probe body and gentler further away from the end. This allows the flexible elements to exhibit an adaptive bending shape in different pipe diameters; the first flexible element can provide sufficient support to prevent the probe body from tipping over. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0015] Figure 1 This is a perspective view of the present invention.

[0016] Figure 2 This is a schematic diagram of the structure of this utility model.

[0017] Figure 3 This is a schematic diagram showing the connection relationship between the drive ring and the drive mechanism in this utility model.

[0018] The attached diagram lists the components represented by each number as follows: 101-Probe body, 102-Limiting assembly, 103-First flexible component, 104-Second flexible component, 105-Connecting ring, 106-Flexible connector, 107-Battery compartment, 108-Transmitting coil compartment, 109-Receiving coil compartment, 110-Giveaway groove, 111-Drive ring, 112-Drive mechanism, 113-Guide slope, 114-Camera, 115-Lighting lamp. Detailed Implementation

[0019] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0020] In the description of the embodiments of this utility model, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0022] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0023] In this embodiment of the invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0024] The following disclosure provides many different implementations or examples for different structures of the embodiments of the present invention. To simplify the disclosure of the embodiments of the present invention, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the embodiments of the present invention. Furthermore, reference numerals and / or reference letters may be repeated in different examples of the embodiments of the present invention; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various implementations and / or arrangements discussed.

[0025] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0026] See Figures 1-3 This embodiment discloses a pipeline defect detection probe, including a probe body 101 and a limiting component 102. The limiting component 102 is installed on the probe body 101 and is used to support and limit the probe body 101. The limiting component 102 is arranged along the circumferential direction of the probe body 101. The limiting component 102 includes a first flexible member 103 and a second flexible member 104 connected to the first flexible member 103. The end of the first flexible member 103 away from the second flexible member 104 is rotatably connected to the probe body 101. The first flexible member 103 and the second flexible member 104 are both inclined, and the angle formed between the first flexible member 103 and the axis of the probe body 101 is smaller than the angle formed between the second flexible member 104 and the axis of the probe body 101.

[0027] In this embodiment, when defect detection of the pipeline is required, the assembled detection probe is placed inside the pipeline. During the detection process, the first flexible element 103 and the second flexible element 104 of the limiting component 102 adjust the contact state between the limiting component 102 and the inner wall of the pipeline through elastic deformation and rotation of the first flexible element 103, according to the size of the pipeline diameter and the water flow conditions. The probe body 101 is stably supported and limited, keeping the probe body 101 near the pipeline axis and ensuring a stable distance between the detection sensor and the pipe wall. In the prior art, if a flexible support bar with a fixed angle is used to support the detection equipment, when the detection pipe diameter is large, the flexible support bar may only have contact with the pipe wall at its end, easily resulting in a state where the middle is suspended and the two ends are in contact, which cannot effectively detect the probe body. The probe body 101 provides stable support and limitation. However, when the pipe diameter is small, the fixed-angle flexible support strip will bend excessively, and the root of the flexible support strip will bear concentrated stress, which may cause material fatigue fracture. At the same time, the end of the flexible support strip will squeeze the pipe wall too tightly, increasing the resistance to travel. In this embodiment, by making the angle between the first flexible element 103 and the axis of the probe body 101 smaller than the angle between the second flexible element 104 and the axis of the probe body 101, the first flexible element 103 and the second flexible element 104 can be made into a variable-angle segmented structure. The variable-angle segmented structure is steep near the root of the probe body 101 and gentler away from the end of the probe body 101. This allows the flexible element to present an adaptive bending shape in different pipe diameters. The first flexible element 103 can provide sufficient support force to prevent the probe body 101 from tipping over. When inspecting different pipes, the second flexible element 104, which is fixedly connected to the first flexible element 103, can rotate with the first flexible element 103, and its own deformation increases the contact area between the second flexible element 104 and the pipe wall, reducing local stress concentration.

[0028] In some embodiments, a plurality of connecting rings 105 are detachably mounted on the probe body 101, and the first flexible member 103 is rotatably connected to the connecting rings 105. In this embodiment, the probe and the connecting rings 105 are detachably connected by bolts. By removing or replacing the number and position of the connecting rings 105, the positions of the first flexible member 103 and the second flexible member 104 on the probe body 101 can be adjusted, thereby adapting to pipes with different inner diameters and facilitating the cleaning and replacement of the first flexible member 103 and the second flexible member 104.

[0029] In some embodiments, the probe body 101 includes a flexible connector 106 and a battery compartment 107, a transmitting coil compartment 108, and a receiving coil compartment 109 connected sequentially via the flexible connector 106. The limiting component 102 is equally spaced along the circumferential direction of the battery compartment 107, the transmitting coil compartment 108, and the receiving coil compartment 109. In this embodiment, the transmitting coil compartment 108 is used to transmit electromagnetic signals of a specific frequency and intensity into the pipeline. By transmitting electromagnetic signals, they propagate in the pipeline and interact with the pipeline material and any existing defects, generating electromagnetic signals that meet the detection requirements, thereby effectively detecting various conditions of the pipeline, such as cracks, corrosion, and changes in wall thickness. The receiving coil compartment 109 is used to receive electromagnetic signals from inside the pipeline. During pipeline inspection by the probe body 101, the electromagnetic signal emitted by the transmitting coil will change when it encounters defects or material changes in the pipeline. The receiving coil compartment 109 is responsible for capturing these changed electromagnetic signals. The battery compartment 107 is equipped with a waterproof battery to provide power to the probe body 101 and ensure the normal operation of each component. In this embodiment, the flexible connector 106 is made of rubber material.

[0030] In some embodiments, the battery compartment 107, the transmitting coil compartment 108, and the receiving coil compartment 109 are provided with clearance grooves 110 corresponding to the first flexible member 103. In this embodiment, the clearance grooves 110 are used to make way for the first flexible member 103. During the detection process, the first flexible member 103 needs to adapt to changes in pipe diameter or bends in the pipe by rotating and deforming. The clearance grooves 110 provide unobstructed movement space for the first flexible member 103, avoiding the probe body 101 from blocking the first flexible member 103, which could easily lead to breakage of the first flexible member 103 or jamming of the probe body 101.

[0031] In some embodiments, the battery compartment 107, the transmitting coil compartment 108, and the receiving coil compartment 109 are detachably connected to the connector. In this embodiment, the battery compartment 107, the transmitting coil compartment 108, and the receiving coil compartment 109 are provided with threaded grooves, and the left and right ends of the connector are provided with threaded posts for engaging with the threaded grooves. The connector is detachably connected to the threaded grooves through the threaded posts, thereby facilitating the assembly and disassembly of the probe body 101 and the replacement of the connector.

[0032] In some embodiments, a drive ring 111 is slidably mounted on the battery compartment 107, and a drive mechanism 112 for driving the drive ring 111 to move is mounted on the battery compartment 107. In this embodiment, the waterproof battery installed in the battery compartment 107 is used to power the drive mechanism 112. The drive mechanism 112 is a conventional underwater telescopic mechanism in the prior art. In this embodiment, the fixed ends of the drive mechanism 112 are symmetrically installed on both sides of the battery compartment to avoid the center of the battery compartment shifting. The telescopic ends of the drive mechanism 112 are fixedly connected to the drive ring 111. When it is necessary to retrieve the probe body 101, the user puts the retrieval device with the retrieval net into the vertical pipe. After the drive mechanism 112 drives the drive ring 111 to move towards the first flexible member 103, the first flexible member 103 contacts the drive ring 111 and rotates away from the axial direction of the battery compartment 107 as the drive ring 111 moves. This allows the second flexible member 104 connected to the first flexible member 103 to pass through the mesh holes set on the retrieval net, making it easy for the user to take the probe body 101 out of the pipe. The retrieval device in this embodiment is a conventional retrieval device in the prior art, and its structure and function will not be described in detail here.

[0033] In some embodiments, the drive ring 111 is provided with a guide ramp 113. When the drive ring 111 moves toward the first flexible member 103 under the action of the drive mechanism 112, the guide ramp 113 can cooperate with the first flexible member 103 to form a smooth contact. Through the guiding effect of the guide ramp 113, the first flexible strip can gradually rotate outward along the ramp direction when it is pushed by the drive ring 111, avoiding rigid collision between the drive ring 111 and the first flexible member 103, which could cause the first flexible member 103 to jam or be damaged.

[0034] In some embodiments, a ball groove is provided on the guide slope 113, and a ball is fixedly connected in the ball groove. By providing the ball, the sliding friction generated after the guide slope 113 and the first flexible member 103 come into contact can be converted into rolling friction, thereby reducing the wear of the contact surface between the first flexible member 103 and the guide slope 113.

[0035] In some embodiments, a camera 114 and a lighting lamp 115 are installed on the battery compartment 107. In this embodiment, the camera 114 is a conventional underwater camera device in the prior art, used to photograph and record the condition of the pipeline. The lighting lamp 115 provides sufficient brightness to the detection area by actively emitting light, enabling the camera 114 to clearly capture images or data of the inner wall of the pipeline. The structure and function of the camera 114 and the lighting lamp 115 will not be described in detail here.

[0036] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0037] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pipeline defect detection probe, characterized in that... It includes a probe body (101) and a limiting component (102), the limiting component (102) being mounted on the probe body (101) and used to support and limit the probe body (101); The limiting component (102) is arranged along the circumferential direction of the probe body (101). The limiting component (102) includes a first flexible member (103) and a second flexible member (104) connected to the first flexible member (103). The end of the first flexible member (103) away from the second flexible member (104) is rotatably connected to the probe body (101). The first flexible member (103) and the second flexible member (104) are both inclined, and the angle formed between the first flexible member (103) and the axis of the probe body (101) is smaller than the angle formed between the second flexible member (104) and the axis of the probe body (101).

2. The pipeline defect detection probe according to claim 1, characterized in that: A plurality of connecting rings (105) are detachably installed on the probe body (101), and the first flexible member (103) is rotatably connected to the connecting rings (105).

3. The pipeline defect detection probe according to claim 1, characterized in that: The probe body (101) includes a flexible connector (106) and a battery compartment (107), a transmitting coil compartment (108) and a receiving coil compartment (109) connected in sequence through the flexible connector (106). The limiting component (102) is equally spaced along the circumferential direction of the battery compartment (107), the transmitting coil compartment (108) and the receiving coil compartment (109).

4. A pipeline defect detection probe according to claim 3, characterized in that: The battery compartment (107), the transmitting coil compartment (108), and the receiving coil compartment (109) are provided with clearance grooves (110) corresponding to the first flexible member (103).

5. A pipeline defect detection probe according to claim 3, characterized in that: The battery compartment (107), the transmitting coil compartment (108), and the receiving coil compartment (109) are detachably connected to the connector.

6. A pipeline defect detection probe according to claim 3, characterized in that: A drive ring (111) is slidably mounted on the battery compartment (107), and a drive mechanism (112) for driving the drive ring (111) to move is mounted on the battery compartment (107).

7. A pipeline defect detection probe according to claim 6, characterized in that: The drive ring (111) is provided with a guide slope (113).

8. A pipeline defect detection probe according to claim 5, characterized in that: The battery compartment (107) is equipped with a camera (114) and a light (115).

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