Cable chamber internal fault detection device and detection method thereof

Abstract

The application belongs to the technical field of power system detection, and discloses a cable chamber internal fault detection device and a detection method thereof. The cable chamber internal fault detection device comprises a cable chamber, a lens, an adapter plate and an optical fiber assembly. The cable chamber is used for installing cables. The outer wall of the cable chamber is provided with a plurality of installation interfaces in the circumferential direction. The plurality of lenses correspond to the plurality of installation interfaces one by one. The lens is arranged in the installation interface, and the convex part of the lens extends into the cavity of the cable chamber. The adapter plate is detachably arranged on the outer wall of the cable chamber and can press the bottom of the lens on the cable chamber. The plurality of optical fiber assemblies correspond to the plurality of lenses one by one. The first end of the optical fiber assembly is arranged in the adapter plate and extends into the convex part of the lens. The plurality of optical fiber assemblies are connected with each other, and the second end of one of the optical fiber assemblies is connected with an external imaging device. The cable chamber internal fault detection device effectively improves the efficiency of obtaining image data during testing and accelerates the speed of obtaining the probability of fault occurrence.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power system detection, and in particular to a cable chamber internal fault detection device and a detection method thereof. BACKGROUND

[0002] The cable chamber internal fault detection device and the detection method thereof are important technical means for ensuring the safe and stable operation of the power system. With the increasing complexity and scale of the power system, ensuring the normal operation of the cable has become a key task in the maintenance of the power system. The cable in the cable chamber operates in a complex environment and may be affected by temperature, humidity, mechanical stress and other factors. Therefore, timely detection of potential fault hazards is of great significance to ensuring the normal operation of the cable chamber.

[0003] The existing detection technology generally indirectly detects the internal faults of the cable chamber through sound wave signals and the like. However, these detection means can only detect when the fault has occurred or is about to occur, and cannot accurately locate the fault position and the fault type, so the actual application effect is poor. Based on this, the present application proposes a technology for collecting images inside the cable chamber, accurately locating weak points inside the cable chamber through database comparison, and predicting the occurrence of faults. The technology proposed in the present application can simultaneously detect and prevent various faults inside the cable chamber, and has practical engineering application value. SUMMARY

[0004] The present application aims to provide a cable chamber internal fault detection device and a detection method thereof, which can solve the problem of inconvenient testing of the existing testing method, and the need to untie the cable terminal during testing, which causes damage to the cable terminal, increases the disassembly and assembly cost and risk. The detection device only needs to connect the external imaging device with one of the optical fiber assemblies to obtain image data when detecting the inside of the cable chamber, without the need to untie the cable terminal, which will not damage the cable chamber, reduce the disassembly and assembly cost and risk, and at the same time, save the installation cost, and has a wide application range.

[0005] To achieve this purpose, the present application adopts the following technical solutions:

[0006] A cable chamber internal fault detection device comprises:

[0007] A cable chamber, the outer wall of the cable chamber is provided with a plurality of mounting interfaces in the circumferential direction;

[0008] A plurality of lenses correspond one-to-one to a plurality of mounting interfaces, the lens is arranged in the mounting interface, and the convex part of the lens extends into the cavity of the cable chamber;

[0009] Adapter plates, the adapter plates are one-to-one corresponding to the lenses, the adapter plates are detachably mounted on the outer wall of the cable compartment and can press the bottom of the lenses on the cable compartment;

[0010] Optical fiber assemblies, the optical fiber assemblies are one-to-one corresponding to the lenses, the first end of the optical fiber assemblies is arranged in the adapter plates and extends into the convex parts of the lenses, the optical fiber assemblies are connected with each other, and the second end of one of the optical fiber assemblies is connected with an external imaging device.

[0011] As preferred, the lens comprises the convex part and the flange part connected with each other, the side wall of the mounting interface is provided with a containing groove, and the adapter plate is pressed into the containing groove.

[0012] As preferred, a sealing element is arranged between the flange part and the adapter plate.

[0013] As preferred, the adapter plate is mounted on the cable compartment through a threaded part.

[0014] As preferred, the adapter plate has a ring structure, one end of the outer circumferential surface of the ring structure has a radial connecting protrusion, the connecting protrusion is arranged on the outer wall of the cable compartment and is fixedly connected with the cable compartment through the threaded part.

[0015] As preferred, the optical fiber assembly comprises an optical fiber probe and an optical fiber connector connected with each other, the optical fiber connector is mounted on the adapter plate, and the optical fiber probe extends into the convex part.

[0016] As preferred, the optical fiber probe is provided with a plurality of optical fiber probes, and the plurality of optical fiber probes are uniformly distributed along the circumference of the optical fiber connector.

[0017] As preferred, a plurality of multimode optical fibers are arranged in each optical fiber probe.

[0018] As preferred, the optical fiber assemblies are connected with each other through optical fiber parts, and the outer wall of the cable compartment is provided with a support for supporting the optical fiber parts.

[0019] The application also provides an internal fault detection method of a cable compartment, which is based on the internal fault detection device of any one of the above-mentioned schemes and comprises the following steps:

[0020] Connecting the optical fiber assembly with the external imaging device to collect image data.

[0021] Transmitting the image data to a data center through a wireless network, and analyzing the probability of fault occurrence through an image recognition algorithm in the data center.

[0022] The application has the following beneficial effects:

[0023] The cable chamber internal fault detection device provided by the application can obtain image data by connecting an external imaging device with one of the optical fiber assemblies, without disassembling the cable terminal, damaging the cable chamber, reducing the disassembly cost and risk, and the lens can be fixed on the mounting interface of the cable chamber by using a detachable adapter plate during assembly, which is convenient to operate, and for densely installed cable chamber equipment, one of the optical fiber assemblies of multiple cable chambers can be connected in parallel, and the second end of the optical fiber assembly is connected with the external imaging device, so that the overall imaging of the equipment inside can be obtained, without connecting each optical fiber assembly with the external imaging device, thereby saving the installation cost and having a wider application than the prior art.

[0024] The application further provides a cable chamber internal fault detection method based on the above-mentioned cable chamber internal fault detection device, which effectively improves the efficiency of obtaining image data and accelerates the derivation speed of the fault occurrence probability. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a schematic diagram of the overall structure of the cable chamber internal fault detection device provided by the application;

[0026] Figure 2 is a schematic diagram of the local structure of the cable chamber internal fault detection device provided by the application;

[0027] Figure 3 is a side view of the cable chamber internal fault detection device provided by the application;

[0028] Figure 4 is a schematic diagram of the connection structure of the optical fiber assembly provided by the application;

[0029] Figure 5 is a flowchart of the cable chamber internal fault detection method provided by the application.

[0030] In the drawings:

[0031] 100, cable chamber; 200, lens; 210, convex part; 220, flange part; 300, adapter plate; 310, connecting protrusion; 400, optical fiber assembly; 410, optical fiber probe; 420, optical fiber connector; 500, threaded part; 600, cable; 700, optical fiber assembly; 800, support. DETAILED DESCRIPTION

[0032] The application will be further described below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are intended to be merely illustrative of the application and not in limitation thereof. It should also be noted that, for the purpose of clarity, only those structures related to the application are shown in the drawings.

[0033] In the description of the application, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0034] In the present application, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0035] In the description of the present embodiment, the terms "up", "down", "right", and other orientation or position relationships are based on the orientation or position relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0036] The application provides a cable chamber internal fault detection device, which aims to solve the problems of inconvenient testing of the existing testing method, the need to untie the cable terminal during testing, the damage to the cable terminal, the increase of disassembly and assembly cost and risk, and the like. When the detection device detects the inside of the cable chamber, it only needs to connect the external imaging device with one of the optical fiber assemblies to obtain image data, without the need to untie the cable chamber terminal, without damaging the cable chamber, reducing the disassembly and assembly cost and risk, while saving the installation cost, and having a wide application range.

[0037] As Figures 1-4As shown, the cable compartment 100 internal fault detection device comprises the cable compartment 100, the lens 200, the adapter plate 300 and the optical fiber assembly 400, the cable compartment 100 is used for installing the cable 600, and the outer wall of the cable compartment 100 is provided with a plurality of mounting interfaces in the circumferential direction. In implementation, the number of mounting interfaces can be selected as three, and the three mounting interfaces are uniformly distributed along the circumferential direction of the cable compartment 100. In other embodiments, the number of mounting interfaces can be set as four or five, which can be set according to the shape of the cable compartment 100 and actual needs. A plurality of lenses 200 correspond to a plurality of mounting interfaces one by one, the lens 200 is arranged in the mounting interface, and the convex part 210 of the lens 200 extends into the cavity of the cable compartment 100. A plurality of adapter plates 300 correspond to a plurality of lenses 200 one by one, the adapter plate 300 can be detachably installed on the outer wall of the cable compartment 100, and can press the bottom of the lens 200 on the cable compartment 100. A plurality of optical fiber assemblies 400 correspond to a plurality of lenses 200 one by one, the first end of the optical fiber assembly 400 is arranged in the adapter plate 300 and extends into the convex part 210 of the lens 200, a plurality of optical fiber assemblies 400 are connected to each other, and the second end of one of the optical fiber assemblies 400 is connected to an external imaging device. Exemplarily, when the number of mounting interfaces is three, three optical fiber assemblies 400 are correspondingly arranged, the three optical fiber assemblies 400 are connected to each other, and one of the optical fiber assemblies 400 is connected to the external imaging device.

[0038] The above-mentioned cable compartment 100 internal fault detection device only needs to connect the external imaging device with one of the optical fiber assemblies 400 to obtain image data, without the need to untie the terminal of the cable 600, so as not to damage the cable compartment 100, thereby reducing the disassembly cost and disassembly risk; the outer wall of the cable compartment 100 is provided with the mounting interface, and when assembled, the detachable adapter plate 300 can fix the lens 200 on the mounting interface of the cable compartment 100, which is convenient to operate; for densely installed cable compartment 100 devices, a parallel connection mode can be used to connect one of the optical fiber assemblies 400 on the plurality of cable compartments 100, and only the second end of one of the optical fiber assemblies 400 needs to be connected to the external imaging device to obtain the overall imaging of the internal device, without the need to connect each optical fiber assembly 400 to the external imaging device, thereby saving the installation cost and having a wider application than the prior art.

[0039] In order to improve the installation stability of the lens 200, the lens 200 is provided with the mutually connected convex part 210 and flange part 220, the side wall of the mounting interface is provided with a containing groove, and the flange part 220 is pressed into the containing groove by the adapter plate 300, so as to avoid the lens 200 from being deviated or shaken during testing.

[0040] As a preferred, a sealing member is arranged between the flange part 220 and the adapter plate 300 to realize the sealing between the lens 200 and the adapter plate 300.

[0041] Optionally, the adapter plate 300 has a ring structure, and one end of the outer circumferential surface of the ring structure has a radial connecting protrusion 310 that abuts against the outer wall of the cable chamber 100 and is fixedly connected to the cable chamber 100 by the threaded fastener 500. The adapter plate 300 is installed on the cable chamber 100 by the threaded fastener 500, which is convenient to disassemble and reassemble, and effectively improves the assembly efficiency.

[0042] In this embodiment, the optical fiber assembly 400 includes the optical fiber probe 410 and the optical fiber connector 420 that are connected to each other, the optical fiber connector 420 is installed on the adapter plate 300, and the optical fiber probe 410 extends into the convex portion 210. During testing, the optical fiber connector 420 is connected to an external imaging device by a line inspection robot or manual line inspection, and the optical fiber probe 410 extends into the convex portion 210 of the lens 200 to collect image information in the cavity of the cable chamber 100. In specific implementation, the optical fiber connector 420 is installed on the hole wall of the mounting hole of the adapter plate 300, one end of the optical fiber connector 420 is exposed, and the other end is connected to the optical fiber probe 410. The exposed end is convenient for connection with the external imaging device.

[0043] To realize image collection without dead angle, the optical fiber probe 410 is provided with a plurality of optical fiber probes 410 that are uniformly distributed along the circumference of the optical fiber connector 420 to expand the image collection range and obtain image data as much as possible. In this embodiment, the optical fiber probe 410 is provided with three optical fiber probes 410 that are uniformly distributed along the circumference of the optical fiber connector 420. In other embodiments, the number of optical fiber probes 410 can be four or five, and the number can be set as needed.

[0044] Further preferably, each optical fiber probe 410 is provided with a plurality of multi-mode optical fibers that are directed in different directions. In this embodiment, each optical fiber probe 410 is provided with five multi-mode optical fibers that are directed in five different directions, and each multi-mode optical fiber includes four optical fibers, i.e., one infrared optical fiber, one ultraviolet optical fiber, and two visible light optical fibers. During testing, the external imaging device is connected to the optical fiber connector 420, the external imaging device first directly collects ultraviolet images and infrared images, then visible light is shone into the cavity of the cable chamber 100 through one of the two visible light optical fibers, and then the visible light image inside the cavity of the cable chamber 100 is collected through the other visible light optical fiber.

[0045] Optionally, a plurality of optical fiber assemblies 400 are connected to each other by the optical fiber member 700, and the outer wall of the cable chamber 100 is provided with a support 800 that supports the optical fiber member 700, so as to avoid the optical fiber member 700 from falling due to gravity and improve the reliability of installation.

[0046] The embodiment also provides a method for detecting internal faults of the cable chamber 100 by using the above-mentioned internal fault detection device of the cable chamber 100, which includes the following steps.

[0047] S1, connect the optical fiber assembly 400 with an external imaging device to collect image data;

[0048] S2, transmit the image data to a data center through a wireless network, and the data center analyzes the probability of failure occurrence through an image recognition algorithm.

[0049] The detection method effectively improves the efficiency of obtaining image data, and further speeds up the derivation speed of the probability of failure occurrence.

[0050] Referring to Figure 5 Taking a robot line patrol as an example, when the line patrol robot moves to a measurement point, the external imaging device is automatically connected to the optical fiber connector 420 at the center of the adapter plate 300 on the outer wall of the cable chamber 100, first, the ultraviolet image and the infrared image are directly collected, then visible light is shone into the cavity through one of the two visible optical fibers, and then the visible light image inside the cavity is collected through the other visible optical fiber. After completing the image collection, the image data is transmitted to the data center through a wireless network, and the data center analyzes the probability of failure occurrence through an image recognition algorithm to guide the maintenance personnel to carry out maintenance.

[0051] Obviously, the above embodiments of the present application are only examples for clear illustration of the present application, and are not a limitation on the embodiments of the present application. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of the present application. It is unnecessary and impossible to enumerate all the embodiments. Any modification, equivalent substitution and improvement within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A cable vault internal fault detection apparatus, characterized by, The application relates to a cable storage device, which comprises the following parts: a cable storage (100), the outer wall of the cable storage (100) is provided with a plurality of mounting interfaces in the circumferential direction; lenses (200), the lenses (200) correspond to the mounting interfaces one by one, the lenses (200) are arranged in the mounting interfaces, and the convex parts (210) of the lenses (200) extend into the cavities of the cable storage (100); adapter plates (300), the adapter plates (300) correspond to the lenses (200) one by one, the adapter plates (300) are detachably arranged on the outer wall of the cable storage (100), and the bottom parts of the lenses (200) can be pressed on the cable storage (100); optical fiber assemblies (400), the optical fiber assemblies (400) correspond to the lenses (200) one by one, the first ends of the optical fiber assemblies (400) are arranged in the adapter plates (300) and extend into the convex parts (210) of the lenses (200), the optical fiber assemblies (400) are connected to each other, and the second ends of one of the optical fiber assemblies (400) are connected to external imaging equipment.

2. The cable compartment internal fault detection apparatus according to claim 1, characterized by, The lens (200) comprises the convex part (210) and a flange part (220) which are connected to each other, the side wall of the mounting interface is provided with a containing groove, and the flange part (220) is pressed into the containing groove by the adapter plate (300).

3. The cable compartment internal fault detection apparatus according to claim 2, characterized by, A sealing element is arranged between the flange part (220) and the adapter plate (300).

4. The cable compartment internal fault detection apparatus of claim 1, wherein, The adapter plate (300) is arranged on the cable storage (100) through a threaded part (500).

5. The cable compartment internal fault detection apparatus of claim 4, wherein, The adapter plate (300) has a ring structure, one end of the outer circumferential surface of the ring structure is provided with a radial connecting protrusion (310), the connecting protrusion (310) abuts against the outer wall of the cable storage (100) and is fixedly connected to the cable storage (100) through the threaded part (500).

6. The cable compartment internal fault detection apparatus of claim 1, wherein, The optical fiber assembly (400) comprises optical fiber probes (410) and optical fiber connectors (420) which are connected to each other, the optical fiber connector (420) is arranged on the adapter plate (300), and the optical fiber probe (410) extends into the convex part (210).

7. The cable compartment internal fault detection apparatus of claim 6, wherein, A plurality of optical fiber probes (410) are arranged, and the optical fiber probes (410) are uniformly distributed along the circumferential direction of the optical fiber connector (420).

8. The cable compartment internal fault detection apparatus of claim 6, wherein, A plurality of multimode optical fibers which are different from each other are arranged in each optical fiber probe (410).

9. The cable compartment internal fault detection apparatus of claim 1, wherein, The optical fiber assemblies (400) are connected to each other through optical fiber parts (700), and the outer wall of the cable storage (100) is provided with a support (800) for supporting the optical fiber part (700).

10. A method for detecting an internal fault of a cable chamber based on the internal fault detection device according to any one of claims 1 to 9, characterized in that, The application further relates to a method for analyzing the probability of fault occurrence, which comprises the following steps: connecting the optical fiber assembly (400) to the external imaging equipment to collect image data; transmitting the image data to a data center through a wireless network, and analyzing the probability of fault occurrence through an image recognition algorithm in the data center.

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