Visual detection device and method for internal defects of outdoor terminal of high-voltage cable

Abstract

The invention discloses a visual detection device and method for internal defects of a high-voltage cable outdoor terminal. The visual detection device comprises the cable outdoor terminal and a visual detection mechanism, the cable outdoor terminal comprises an insulating sleeve, and a spiral lifting channel is arranged in the insulating sleeve. The visual detection mechanism comprises an infrared detection module used for detecting the temperature of the internal structure of the cable outdoor terminal, a detection driving mechanism used for driving the infrared detection module to move in the spiral lifting channel, an intelligent control module used for processing collected signals and a background management system. The infrared detection module is located in a spiral lifting channel of the insulating sleeve; the intelligent control module is connected with the infrared detection module and the detection driving mechanism, and the background management system is connected with the intelligent control module through network signals. According to the invention, visual detection of key positions in the cable oil type terminal is realized, internal temperature change points can be monitored, fault points can be found in advance, and fault early warning can be carried out.

Description

Technical Field

[0001] The invention relates to an outdoor cable terminal, and in particular to a device and method for visually detecting internal defects of an outdoor high-voltage cable terminal. Background Art

[0002] For cable terminals, conventional cable terminal products do not have the function of detecting their own state quantities, so it is impossible to monitor high-voltage cable terminals during operation, and their operating status can only be estimated through manual inspections or some external online monitoring devices. Since the terminal has exposed high-voltage parts and needs to be installed at a high place, the effectiveness of manual inspections is greatly reduced, and external online monitoring devices are also unable to detect the inside of the cable terminal. In order to ensure the reliable operation of the cable terminal, reduce the difficulty of manual inspections, and improve the effectiveness and efficiency of inspections, a visual detection device and method for internal defects of high-voltage cable outdoor terminals is very meaningful and practical. Summary of the invention

[0003] The purpose of the present invention is to overcome the above-mentioned problems and provide a visual detection device for internal defects of a high-voltage cable outdoor terminal. The visual detection device realizes visual detection of key positions inside the cable oil terminal, can monitor internal temperature change points, discover fault points in advance, and provide fault warnings.

[0004] Another object of the present invention is to provide a method for visually detecting internal defects of an outdoor terminal of a high-voltage cable.

[0005] The purpose of the present invention is achieved through the following technical solutions:

[0006] A visual detection device for internal defects of a high-voltage cable outdoor terminal, comprising an outdoor cable terminal and a visual detection mechanism;

[0007] The cable outdoor terminal comprises an insulating sleeve, in which a spiral lifting channel is provided;

[0008] The visual detection mechanism includes an infrared detection module for detecting the temperature of the internal structure of the cable outdoor terminal, a detection drive mechanism for driving the infrared detection module to move in the spiral lifting channel, an intelligent control module for processing collected signals, and a background management system; the infrared detection module is located in the spiral lifting channel of the insulating sleeve; the intelligent control module is connected to the infrared detection module and the detection drive mechanism respectively, and the background management system is connected to the intelligent control module through a network signal.

[0009] In a preferred embodiment of the present invention, the detection drive mechanism includes an integrally mounted housing, a detection drive motor and a propeller, the infrared detection module and the detection drive motor are both arranged on the integrally mounted housing, and the detection drive motor is connected to the propeller. Through the above structure, since the insulating sleeve is filled with insulating oil, the propeller is driven to rotate by the detection drive motor, and can be lifted and lowered along the spiral lifting channel, thereby detecting the temperature at different positions.

[0010] Furthermore, the detection drive mechanism also includes a battery and a wireless charging base. The battery is arranged in an integrated installation shell, and the wireless charging base is installed outside the insulating sleeve. Electric energy is taken through the power taking ring and transmitted to the battery, thereby maintaining the operation of the infrared detection module.

[0011] Furthermore, the power taking ring takes power through the CT, and the CT is put on the surface of the high-voltage cable below the terminal. When the high-voltage cable is energized, the CT can obtain electrical energy and transmit it to the internal battery through the wireless charging base.

[0012] In a preferred embodiment of the present invention, the intelligent control module is connected to the infrared detection module, the detection drive mechanism and the background management system respectively by wireless means.

[0013] A preferred embodiment of the present invention, wherein the insulating sleeve comprises an outer sleeve and an inner sleeve, the outer wall of the inner sleeve is seamlessly attached to the inner wall of the outer sleeve; the spiral lifting channel is arranged on the inner wall of the outer sleeve; the inner sleeve is provided with insulating oil, and the inner sleeve is made of a transparent polymer material.

[0014] Furthermore, the detection drive mechanism includes flowing liquid, a conveying pipe and a conveying pump; the flowing liquid is filled in the conveying pipe and the spiral lifting channel; the conveying pipe includes a first conveying pipe and a second conveying pipe, one end of the first conveying pipe is connected to the bottom of the spiral lifting channel, and the other end of the first conveying pipe is connected to the conveying pump; one end of the second conveying pipe is connected to the top of the spiral lifting channel, and the other end of the second conveying pipe is connected to the conveying pump.

[0015] Through the above structure, if it is necessary to drive the infrared detection module to rise, the delivery pump drives the flowing liquid from the first delivery pipeline to the spiral lifting channel, and the flowing liquid after entering the spiral lifting channel moves upward, thereby pushing the infrared detection module to rise along the spiral lifting channel; on the contrary, if it is necessary to drive the infrared detection module to descend, the delivery pump drives the flowing liquid from the second delivery pipeline to the spiral lifting channel, and the flowing liquid after entering the spiral lifting channel moves downward, thereby pushing the infrared detection module to move downward along the spiral lifting channel. Furthermore, since the inner sleeve separates the insulating oil, the infrared detection module does not need to be immersed in the insulating oil, which is conducive to the layout of the driving mechanism and ensures sufficient power to ensure the lifting and moving of the infrared detection module.

[0016] Furthermore, the second delivery pipeline is arranged in the outer sleeve, and a connecting groove is arranged on the top of the outer sleeve, which connects the top of the second delivery pipeline with the top of the spiral lifting channel; the first delivery pipeline and the delivery pump are arranged below the outer sleeve. In this way, the structural layout is compact and reasonable, and will not interfere with other components.

[0017] Furthermore, the spiral lifting channel includes a spiral groove arranged on the inner wall of the outer sleeve and a spiral tube body embedded in the spiral groove. Specifically, the spiral tube body is a transparent hose, which is convenient to install in the spiral groove. The advantage of adopting the above structure is that the spiral tube body is used to form the working channel of the infrared detection module, which is easy to achieve sealing, and installation and replacement are also more convenient.

[0018] Furthermore, the lower end of the outer sleeve is provided with a lower connecting port connected to the lower end of the spiral tube body, and the lower connecting port is connected to the first conveying pipeline; the upper end of the outer sleeve is provided with an upper connecting port connected to the upper end of the spiral tube body, and the upper connecting port is connected to the second conveying pipeline.

[0019] A method for visually detecting internal defects of a high-voltage cable outdoor terminal comprises the following steps:

[0020] The intelligent control module sends an ascending or descending instruction to the detection drive mechanism, and the detection drive mechanism drives the infrared detection module to ascend or descend along the spiral lifting channel;

[0021] The infrared detection module collects the temperature of the internal structure of the cable outdoor terminal at the current height and position in real time, and transmits the collected temperature signal to the intelligent control module;

[0022] The temperature signal is analyzed through the intelligent control module, and the analysis results are transmitted to the background management system for unified management.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The present invention realizes visual detection of key positions inside the cable oil terminal by arranging an infrared detection module that can be lifted and moved on the insulating sleeve, which can monitor the internal temperature change points, discover the fault points in advance, and issue fault warnings.

[0025] 2. By setting up a spiral lifting channel, the infrared detection module can not only be lifted to different heights for detection, but also detect at different directions, making monitoring more comprehensive. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 The present invention is a plan view of an infrared detection module and a detection drive mechanism of one embodiment of the device for visually detecting internal defects of a high-voltage cable outdoor terminal according to the present invention.

[0027] Figure 2 It is a schematic diagram of the three-dimensional structure of another embodiment of the device for visually detecting internal defects of a high-voltage cable outdoor terminal of the present invention.

[0028] Figure 3 It is a schematic exploded view of the three-dimensional structure of an insulating sleeve, an infrared detection module and a detection drive mechanism according to another embodiment of the present invention.

[0029] Figure 4 It is a cross-sectional view of an insulating sleeve according to another embodiment of the present invention. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described below in conjunction with embodiments and drawings, but the embodiments of the present invention are not limited thereto.

[0031] Example 1

[0032] The visual detection device for internal defects of a high-voltage cable outdoor terminal of this embodiment comprises an outdoor cable terminal and a visual detection mechanism; the outdoor cable terminal comprises an insulating sleeve, in which a spiral lifting channel is provided; the visual detection mechanism comprises an infrared detection module for detecting the temperature of the internal structure of the outdoor cable terminal, a detection drive mechanism for driving the infrared detection module to move in the spiral lifting channel, an intelligent control module for processing collected signals, and a background management system; the infrared detection module is located in the spiral lifting channel of the insulating sleeve; the intelligent control module is respectively connected to the infrared detection module and the detection drive mechanism, and the background management system is connected to the intelligent control module via a network signal.

[0033] See also Figure 1The detection drive mechanism includes an integrally mounted housing 1, a detection drive motor (not shown) and a propeller 2. The infrared detection module 3 and the detection drive motor are both arranged on the integrally mounted housing 1, and the detection drive motor is connected to the propeller 2. Through the above structure, since the insulating sleeve is filled with insulating oil, the propeller 2 is driven to rotate by the detection drive motor, and can be lifted and lowered along the spiral lifting channel, thereby detecting the temperature at different positions.

[0034] Furthermore, the detection drive mechanism also includes a battery 4 and a wireless charging base. The battery 4 is arranged in an integrated installation shell 1, and the wireless charging base is installed outside the insulating sleeve. Electric energy is transmitted to the battery 4 through a power taking ring, thereby maintaining the operation of the infrared detection module 3.

[0035] Furthermore, the power taking ring takes power through the CT, and the CT is put on the surface of the high-voltage cable below the terminal. When the high-voltage cable is energized, the CT can obtain electrical energy and transmit it to the internal battery through the wireless charging base.

[0036] Furthermore, the intelligent control module is connected to the infrared detection module, the detection drive mechanism and the background management system by wireless means. Specifically, the wireless infrared probe assembly adopts wireless communication and wireless charging, does not need to change the terminal sealing structure, and is installed and operated at a low field strength position of the cable terminal, and is not affected by the terminal electric field.

[0037] The visual detection method for internal defects of a high-voltage cable outdoor terminal of this embodiment includes the following steps:

[0038] The intelligent control module sends an ascending or descending instruction to the detection drive mechanism, and the detection drive mechanism drives the infrared detection module to ascend or descend along the spiral lifting channel.

[0039] The infrared detection module collects the temperature of the internal structure of the cable outdoor terminal at the current height and position in real time, and transmits the collected temperature signal to the intelligent control module.

[0040] The temperature signal is analyzed through the intelligent control module, and the analysis results are transmitted to the background management system for unified management.

[0041] Example 2

[0042] See also Figure 2-4 , which is different from Example 1, the insulating sleeve of this embodiment includes an outer sleeve 5 and an inner sleeve 6, the outer wall of the inner sleeve 6 is seamlessly attached to the inner wall of the outer sleeve 5; the spiral lifting channel 7 is arranged on the inner wall of the outer sleeve 5; the inner sleeve 6 is provided with insulating oil, and the inner sleeve 6 is made of a transparent polymer material.

[0043] See also Figure 2-4 The detection drive mechanism includes a flowing liquid, a conveying pipe and a conveying pump 8; the flowing liquid is filled in the conveying pipe and the spiral lifting channel 7; the conveying pipe includes a first conveying pipe 9 and a second conveying pipe 10, one end of the first conveying pipe 9 is connected to the bottom of the spiral lifting channel 7, and the other end of the first conveying pipe 9 is connected to the conveying pump 8; one end of the second conveying pipe 10 is connected to the top of the spiral lifting channel 7, and the other end of the second conveying pipe 10 is connected to the conveying pump 8.

[0044] Through the above structure, if it is necessary to drive the infrared detection module 3 to rise, the delivery pump 8 drives the flowing liquid from the first delivery pipe 9 to the spiral lifting channel 7, and the flowing liquid after entering the spiral lifting channel 7 moves upward, thereby pushing the infrared detection module 3 to rise along the spiral lifting channel 7; on the contrary, if it is necessary to drive the infrared detection module 3 to descend, the delivery pump 8 drives the flowing liquid from the second delivery pipe 10 to the spiral lifting channel 7, and the flowing liquid after entering the spiral lifting channel 7 moves downward, thereby pushing the infrared detection module 3 to move downward along the spiral lifting channel 7. Furthermore, since the inner sleeve 6 separates the insulating oil, the infrared detection module 3 does not need to be immersed in the insulating oil, which is conducive to the layout of the driving mechanism and ensures sufficient power to ensure the lifting and lowering movement of the infrared detection module 3.

[0045] See also Figure 2-4 The second delivery pipeline 10 is arranged in the outer sleeve 5, and a connecting groove 5-1 is arranged on the top of the outer sleeve 5, and the connecting groove 5-1 connects the top of the second delivery pipeline 10 with the top of the spiral lifting channel 7; the first delivery pipeline 9 and the delivery pump 8 are arranged below the outer sleeve 5. Such a structure layout is compact and reasonable, and will not interfere with other components.

[0046] See also Figure 2-4 The spiral lifting channel 7 includes a spiral groove arranged on the inner wall of the outer sleeve and a spiral tube body 11 embedded in the spiral groove. Specifically, the spiral tube body 11 is a transparent hose, which is convenient to install in the spiral groove. The advantage of adopting the above structure is that the spiral tube body 11 is used to form the working channel of the infrared detection module 3, which is convenient to achieve sealing, and installation and replacement are also more convenient.

[0047] Furthermore, the lower end of the outer sleeve 5 is provided with a lower connecting port connected to the lower end of the spiral tube body 11, and the lower connecting port is connected to the first conveying pipe 9; the upper end of the outer sleeve 5 is provided with an upper connecting port connected to the upper end of the spiral tube body 11, and the upper connecting port is connected to the second conveying pipe 10.

[0048] The above is a preferred embodiment of the present invention, but the embodiment of the present invention is not limited to the above content. Any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principles of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. A visual detection device for internal defects of a high-voltage cable outdoor terminal, characterized in that: Including cable outdoor terminal and visual detection mechanism; The cable outdoor terminal comprises an insulating sleeve, in which a spiral lifting channel is provided; The visual detection mechanism includes an infrared detection module for detecting the temperature of the internal structure of the cable outdoor terminal, a detection drive mechanism for driving the infrared detection module to move in the spiral lifting channel, an intelligent control module for processing collected signals, and a background management system; the infrared detection module is located in the spiral lifting channel of the insulating sleeve; the intelligent control module is connected to the infrared detection module and the detection drive mechanism respectively, and the background management system is connected to the intelligent control module through a network signal.

2. The visual detection device for internal defects of a high-voltage cable outdoor terminal according to claim 1 is characterized in that: The detection drive mechanism comprises an integrally mounted housing, a detection drive motor and a propeller. The infrared detection module and the detection drive motor are both arranged on the integrally mounted housing, and the detection drive motor is connected to the propeller.

3. The visual detection device for internal defects of a high-voltage cable outdoor terminal according to claim 2 is characterized in that: The detection drive mechanism also includes a battery and a wireless charging base. The battery is arranged in an integral installation shell, and the wireless charging base is installed outside the insulating sleeve. Electric energy is taken through a power taking ring and transmitted to the battery, thereby maintaining the operation of the infrared detection module.

4. The visual detection device for internal defects of a high-voltage cable outdoor terminal according to claim 3 is characterized in that: The power taking ring takes power through the CT, and the CT is put on the surface of the high-voltage cable below the terminal. When the high-voltage cable is energized, the CT can obtain electrical energy and transmit it to the internal battery through the wireless charging base.

5. The visual detection device for internal defects of a high-voltage cable outdoor terminal according to claim 1 is characterized in that: The intelligent control module is connected with the infrared detection module, the detection drive mechanism and the background management system respectively by wireless means.

6. The visual detection device for internal defects of a high-voltage cable outdoor terminal according to claim 1 is characterized in that: The insulating sleeve comprises an outer sleeve and an inner sleeve, the outer wall of the inner sleeve is seamlessly attached to the inner wall of the outer sleeve; the spiral lifting channel is arranged on the inner wall of the outer sleeve; the inner sleeve is provided with insulating oil, and the inner sleeve is made of a transparent polymer material.

7. The visual detection device for internal defects of a high-voltage cable outdoor terminal according to claim 6 is characterized in that: The detection drive mechanism includes flowing liquid, a conveying pipeline and a conveying pump; the flowing liquid is filled in the conveying pipeline and the spiral lifting channel; the conveying pipeline includes a first conveying pipeline and a second conveying pipeline, one end of the first conveying pipeline is connected to the bottom of the spiral lifting channel, and the other end of the first conveying pipeline is connected to the conveying pump; one end of the second conveying pipeline is connected to the top of the spiral lifting channel, and the other end of the second conveying pipeline is connected to the conveying pump.

8. The visual detection device for internal defects of a high-voltage cable outdoor terminal according to claim 6 is characterized in that: The second conveying pipeline is arranged in the outer sleeve, and a connecting groove is arranged on the top of the outer sleeve, which connects the top of the second conveying pipeline with the top of the spiral lifting channel; the first conveying pipeline and the conveying pump are arranged below the outer sleeve.

9. The visual detection device for internal defects of a high-voltage cable outdoor terminal according to claim 6, characterized in that: The spiral lifting channel includes a spiral groove arranged on the inner wall of the outer sleeve and a spiral tube body embedded in the spiral groove; The lower end of the outer sleeve is provided with a lower connecting port connected to the lower end of the spiral tube body, and the lower connecting port is connected to the first conveying pipeline; the upper end of the outer sleeve is provided with an upper connecting port connected to the upper end of the spiral tube body, and the upper connecting port is connected to the second conveying pipeline.

10. A method for visually detecting internal defects of a high-voltage cable outdoor terminal according to any one of claims 1 to 9, characterized in that: The following steps are involved: The intelligent control module sends an ascending or descending instruction to the detection drive mechanism, and the detection drive mechanism drives the infrared detection module to ascend or descend along the spiral lifting channel; The infrared detection module collects the temperature of the internal structure of the cable outdoor terminal at the current height and position in real time, and transmits the collected temperature signal to the intelligent control module; The temperature signal is analyzed through the intelligent control module, and the analysis results are transmitted to the background management system for unified management.

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