Cable cabin internal fault detection device and detection method thereof

Abstract

The invention belongs to the technical field of power system detection, and discloses a cable bin internal fault detection device and a detection method thereof.The cable bin internal fault detection device comprises a cable bin, a lens, an adapter plate and an optical fiber assembly, the cable bin is used for installing cables, and the outer wall of the cable bin is provided with a plurality of installation interfaces in the circumferential direction; the plurality of lenses are in one-to-one correspondence with the plurality of mounting interfaces, the lenses are arranged in the mounting interfaces, the convex parts of the lenses extend into the cavity of the cable cabin, the adapter plate is detachably mounted on the outer wall of the cable cabin, and the bottoms of the lenses can be pressed on the cable cabin. The plurality of optical fiber components are in one-to-one correspondence with the plurality of lenses, the first ends of the optical fiber components penetrate through the adapter plate and extend into the convex parts of the lenses, the plurality of optical fiber components are connected with one another, and the second end of one optical fiber component is connected with external imaging equipment. According to the cable cabin internal fault detection device, the efficiency of acquiring image data during testing is effectively improved, and the obtaining speed of the fault occurrence probability is accelerated.

Description

Technical Field

[0001] The present invention relates to the technical field of power system detection, and in particular to a cable bin internal fault detection device and a detection method thereof. Background Art

[0002] The cable silo internal fault detection device and its detection method are important technical means to ensure 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 operation environment in the cable silo is complex and may be affected by temperature, humidity, mechanical stress and other factors. Therefore, timely detection of potential fault hazards is of great significance to ensure the normal operation of the cable silo.

[0003] At present, the existing detection technology generally uses acoustic signals to indirectly detect faults inside the cable warehouse, but these detection methods can only be used when the fault has occurred or is about to occur, and cannot accurately locate the fault location and type, so the actual application effect is poor. Based on this, this paper proposes a technology for collecting images inside the cable warehouse, and accurately locates the weak points inside the cable warehouse through database comparison, and predicts the occurrence of faults. The technology proposed in this paper can simultaneously detect and prevent multiple faults inside the cable warehouse, and has practical engineering application value. Summary of the invention

[0004] The purpose of the present invention is to provide a cable bin internal fault detection device and a detection method thereof, aiming to solve the problem that the existing testing method is inconvenient to test. During testing, the cable terminal needs to be untied, which causes damage to the cable terminal and increases the cost and risk of disassembly and assembly. When the detection device detects the inside of the cable bin, it only needs to connect the external imaging device to one of the optical fiber components to obtain image data. There is no need to untie the cable terminal, which will not damage the cable bin, reducing the cost and risk of disassembly and assembly. At the same time, it saves installation costs and has a wide range of applications.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] A cable bin internal fault detection device, comprising:

[0007] A cable bin, wherein the outer wall of the cable bin is provided with a plurality of installation interfaces along the circumferential direction;

[0008] Lenses, a plurality of the lenses corresponding to a plurality of the mounting interfaces one by one, the lenses being arranged in the mounting interfaces, and the convex parts of the lenses extending into the cavity of the cable bin;

[0009] An adapter plate, wherein a plurality of the adapter plates correspond to a plurality of the lenses one by one, and the adapter plate can be detachably mounted on the outer wall of the cable bin, and can press the bottom of the lens onto the cable bin;

[0010] Optical fiber components, a plurality of the optical fiber components correspond one to one with a plurality of the lenses, a first end of the optical fiber component is passed through the adapter plate and extends into the convex portion of the lens, a plurality of the optical fiber components are connected to each other, and a second end of one of the optical fiber components is connected to an external imaging device.

[0011] Preferably, the lens comprises the convex portion and the flange portion which are connected to each other, the side wall of the mounting interface is provided with a receiving groove, and the adapter plate presses the flange portion into the receiving groove.

[0012] Preferably, a seal is provided between the flange portion and the adapter plate.

[0013] Preferably, the adapter plate is mounted on the cable bin via screws.

[0014] Preferably, the adapter plate is an annular structure, and one end of the outer circumferential surface of the annular structure has a radial connecting protrusion, and the connecting protrusion abuts against the outer wall of the cable bin and is fixedly connected to the cable bin through the threaded member.

[0015] Preferably, the optical fiber assembly comprises an optical fiber probe and an optical fiber connector which are connected to each other, the optical fiber connector is mounted on the adapter plate, and the optical fiber probe extends into the convex portion.

[0016] Preferably, a plurality of the optical fiber probes are provided, and the plurality of optical fiber probes are evenly distributed along the circumference of the optical fiber connector.

[0017] Preferably, each of the optical fiber probes is provided with a plurality of multimode optical fibers oriented in different directions.

[0018] Preferably, a plurality of the optical fiber assemblies are interconnected via optical fiber components; and an outer wall of the cable bin is provided with a bracket for supporting the optical fiber components.

[0019] The present invention also provides a cable bin internal fault detection method, based on the cable bin internal fault detection device as described in any of the above solutions, comprising:

[0020] connecting the optical fiber assembly to the external imaging device to collect image data;

[0021] The image data is transmitted to a data center via a wireless network, and the data center analyzes the probability of a fault occurring through an image recognition algorithm.

[0022] Beneficial effects of the present invention:

[0023] The cable bin internal fault detection device provided by the present invention can obtain image data by connecting an external imaging device to one of the optical fiber components. There is no need to untie the cable terminal, which will not damage the cable bin, thereby reducing the disassembly and assembly costs and risks. An installation interface is provided on the outer wall of the cable bin. During assembly, a detachable adapter plate can be used to fix the lens on the installation interface of the cable bin, which is easy to operate. For densely installed cable bin equipment, a parallel method can be adopted to connect one of the optical fiber components on multiple cable bins. Only the second end of one of the optical fiber components needs to be connected to the external imaging device to obtain the overall imaging of the inside of the equipment. There is no need for each optical fiber component to be connected to the external imaging device, which saves installation costs. Compared with the existing technology, it has a wider application range.

[0024] The present invention also provides a cable bin internal fault detection method. Based on the above-mentioned cable bin internal fault detection device, the detection method effectively improves the efficiency of acquiring image data, thereby accelerating the speed of deriving the probability of fault occurrence. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the cable bin internal fault detection device provided by an embodiment of the present invention;

[0026] Figure 2 It is a partial structural schematic diagram of a cable bin internal fault detection device provided by an embodiment of the present invention;

[0027] Figure 3 is a side view of a cable bin internal fault detection device provided by an embodiment of the present invention;

[0028] Figure 4 is a schematic diagram of the connection structure of the optical fiber component provided by an embodiment of the present invention;

[0029] Figure 5 It is a flow chart of a cable bin internal fault detection method provided by an embodiment of the present invention.

[0030] In the figure:

[0031] 100, cable compartment; 200, lens; 210, convex portion; 220, flange portion; 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 part; 800, bracket. DETAILED DESCRIPTION

[0032] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0033] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0035] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0036] The present invention provides a cable bin internal fault detection device, aiming to solve the problem that the existing testing method is inconvenient to test. During testing, the cable terminal needs to be untied, which causes damage to the cable terminal and increases the disassembly and assembly cost and risk. When the detection device detects the inside of the cable bin, it only needs to connect an external imaging device to one of the optical fiber components to obtain image data. There is no need to untie the cable bin terminal, which will not damage the cable bin, reducing the disassembly and assembly cost and risk. At the same time, it saves installation costs and has a wide range of applications.

[0037] like Figure 1-Figure 4As shown, the internal fault detection device of the cable bin 100 includes a cable bin 100, a lens 200, an adapter plate 300 and an optical fiber assembly 400. The cable bin 100 is used to install the cable 600. The outer wall of the cable bin 100 is provided with a plurality of installation interfaces along the circumference. During implementation, the number of the installation interfaces can be selected as three, and the three installation interfaces are evenly distributed along the circumference of the cable bin 100. In other embodiments, the number of the installation interfaces can be set to four or five, which can be set according to the shape of the cable bin 100 and actual needs. A plurality of lenses 200 correspond to a plurality of installation interfaces one by one, the lens 200 is arranged in the installation interface, and the convex portion 210 of the lens 200 extends into the cavity of the cable bin 100, and a plurality of adapter plates 300 correspond to a plurality of lenses 200 one by one. The adapter plates 300 can be detachably installed on the outer wall of the cable bin 100, and the bottom of the lens 200 can be crimped onto the cable bin 100. Several optical fiber assemblies 400 correspond to several lenses 200 one by one, the first end of the optical fiber assembly 400 is inserted into the adapter plate 300 and extends into the convex portion 210 of the lens 200, the several 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 provided correspondingly, the three optical fiber assemblies 400 are connected to each other, and one of the optical fiber assemblies 400 is connected to an external imaging device.

[0038] The above-mentioned internal fault detection device of the cable bin 100 can obtain image data by connecting the external imaging device to one of the optical fiber components 400. There is no need to untie the cable 600 terminal, which will not damage the cable bin 100, thereby reducing the disassembly and assembly cost and risk. The outer wall of the cable bin 100 is provided with a mounting interface. During assembly, the lens 200 can be fixed on the mounting interface of the cable bin 100 using a detachable adapter plate 300, which is easy to operate. For densely installed cable bin 100 devices, one of the optical fiber components 400 on multiple cable bins 100 can be connected in parallel. Only the second end of one of the optical fiber components 400 needs to be connected to the external imaging device to obtain the overall imaging inside the device. There is no need for each optical fiber component 400 to be connected to the external imaging device, which saves installation costs and has a wider application range compared to the prior art.

[0039] To improve the installation stability of the lens 200, the lens 200 is configured as a convex portion 210 and a flange portion 220 that are connected to each other. The side wall of the mounting interface is provided with a receiving groove, and the adapter plate 300 presses the flange portion 220 into the receiving groove to prevent the lens 200 from being offset or shaking during testing.

[0040] Preferably, a seal is provided between the flange portion 220 and the adapter plate 300 to achieve sealing between the lens 200 and the adapter plate 300 .

[0041] Optionally, the adapter plate 300 is an annular structure, and one end of the outer circumferential surface of the annular structure has a radial connection protrusion 310, and the connection protrusion 310 abuts against the outer wall of the cable bin 100 and is fixedly connected to the cable bin 100 through a screw member 500. The adapter plate 300 is installed on the cable bin 100 through the screw member 500, which is convenient for disassembly and assembly, and effectively improves assembly efficiency.

[0042] In this embodiment, the optical fiber assembly 400 includes an optical fiber probe 410 and an optical fiber connector 420 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 through a line patrol robot or manual line patrol, 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 compartment 100. In specific implementation, the optical fiber connector 420 is installed on the hole wall of the mounting through hole of the adapter plate 300, one end of which is exposed and the other end is connected to the optical fiber probe 410, and the exposed end is convenient for connecting to an external imaging device.

[0043] In order to achieve image acquisition without blind spots, multiple optical fiber probes 410 are provided, and the multiple optical fiber probes 410 are evenly distributed along the circumference of the optical fiber connector 420 to expand the image acquisition range and obtain image data as fully as possible. In this embodiment, three optical fiber probes 410 are provided, and the three optical fiber probes 410 are evenly 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, etc., which can be set as needed.

[0044] Further preferably, each fiber optic probe 410 is provided with a plurality of multimode optical fibers oriented in different directions. In the present embodiment, each fiber optic probe 410 is provided with five multimode optical fibers, the five multimode optical fibers are oriented in five different directions, and each multimode optical fiber comprises four optical fibers, the four optical fibers are one infrared optical fiber, one ultraviolet optical fiber and two visible optical fibers. During the test, the external imaging device is connected to the fiber optic connector 420, and the external imaging device first directly collects the ultraviolet image and the infrared image, and then irradiates the visible light into the cavity of the cable warehouse 100 through one of the two visible optical fibers, and then collects the visible light image inside the cavity of the cable warehouse 100 through the other visible optical fiber.

[0045] Optionally, several optical fiber assemblies 400 are interconnected through optical fiber components 700, and the outer wall of the cable bin 100 is provided with a bracket 800 for supporting the optical fiber components 700 to prevent the optical fiber components 700 from falling due to gravity, thereby improving the reliability of installation.

[0046] This embodiment also provides a method for detecting an internal fault of the cable bin 100 using the internal fault detection device of the cable bin 100, comprising:

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

[0048] S2. The image data is transmitted to the data center via a wireless network, and the data center analyzes the probability of failure through an image recognition algorithm.

[0049] This detection method effectively improves the efficiency of acquiring image data, thereby speeding up the speed of deriving the probability of fault occurrence.

[0050] See also Figure 5 Taking the robot line patrol as an example, when the line patrol robot moves to the measurement point, it automatically connects the external imaging device to the optical fiber connector 420 at the center of the adapter plate 300 on the outer wall of the cable warehouse 100 cavity, first directly collects the ultraviolet image and infrared image, then shines visible light into the cavity through one of the two visible optical fibers, and then collects the visible light image inside the cavity through the other visible optical fiber. After the image acquisition is completed, the image data is transmitted to the data center through the wireless network, and the data center uses the image recognition algorithm to analyze the probability of failure to guide the operation and maintenance personnel to perform maintenance.

[0051] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A cable bin internal fault detection device, characterized in that: include: A cable bin (100), wherein the outer wall of the cable bin (100) is provided with a plurality of installation interfaces along the circumferential direction; A lens (200), wherein a plurality of the lenses (200) correspond to a plurality of the mounting interfaces one by one, the lenses (200) are arranged in the mounting interfaces, and the convex portion (210) of the lenses (200) extends into the cavity of the cable bin (100); an adapter plate (300), wherein a plurality of the adapter plates (300) correspond to a plurality of the lenses (200) in a one-to-one manner, and the adapter plate (300) can be detachably mounted on the outer wall of the cable bin (100), and can press the bottom of the lens (200) onto the cable bin (100); An optical fiber assembly (400), wherein a plurality of the optical fiber assemblies (400) correspond to a plurality of the lenses (200) one by one, a first end of the optical fiber assembly (400) is passed through the adapter plate (300) and extends into the convex portion (210) of the lens (200), a plurality of the optical fiber assemblies (400) are connected to each other, and a second end of one of the optical fiber assemblies (400) is connected to an external imaging device.

2. The cable bin internal fault detection device according to claim 1, characterized in that: The lens (200) comprises the convex portion (210) and the flange portion (220) which are connected to each other, the side wall of the mounting interface is provided with a receiving groove, and the adapter plate (300) presses the flange portion (220) into the receiving groove.

3. The cable bin internal fault detection device according to claim 2, characterized in that: A sealing member is provided between the flange portion (220) and the adapter plate (300).

4. The cable bin internal fault detection device according to claim 1, characterized in that: The adapter plate (300) is mounted on the cable bin (100) via a threaded member (500).

5. The cable bin internal fault detection device according to claim 4, characterized in that: The adapter plate (300) is an annular structure, and one end of the outer peripheral surface of the annular structure has a radial connection protrusion (310), and the connection protrusion (310) abuts against the outer wall of the cable bin (100) and is fixedly connected to the cable bin (100) through the threaded member (500).

6. The cable bin internal fault detection device according to claim 1, characterized in that: The optical fiber assembly (400) comprises an optical fiber probe (410) and an optical fiber connector (420) which 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 protrusion (210).

7. The cable bin internal fault detection device according to claim 6, characterized in that: A plurality of the optical fiber probes (410) are provided, and the plurality of optical fiber probes (410) are evenly distributed along the circumference of the optical fiber connector (420).

8. The cable bin internal fault detection device according to claim 6, characterized in that: Each of the optical fiber probes (410) is provided with a plurality of multimode optical fibers oriented in different directions.

9. The cable bin internal fault detection device according to claim 1, characterized in that: A plurality of the optical fiber assemblies (400) are connected to each other via an optical fiber component (700); and a bracket (800) for supporting the optical fiber component (700) is provided on an outer wall of the cable bin (100).

10. A cable bin internal fault detection method, based on the cable bin internal fault detection device according to any one of claims 1 to 9, characterized in that: include: Connecting the optical fiber assembly (400) to the external imaging device to collect image data; The image data is transmitted to a data center via a wireless network, and the data center analyzes the probability of a fault occurring through an image recognition algorithm.

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