Terminal head lead lining falling off detection device and method

Abstract

The present invention relates to a terminal head lead lining falling off detection device and method. The terminal head lead lining falling off detection device comprises a cable terminal head mounting bracket, a cable armor marking device, a cable armor detection probe (6), a signal processing device (3) and a data transmission device. The cable armor marking device is fixed on the cable armor (2). The cable armor detection probe (6), the signal processing device (3) and the data transmission device are fixed on the cable terminal head mounting bracket. The cable armor marking device is a magnetic device. The position of the cable armor detection probe is adjusted so that the cable armor detection probe is located at the cable armor marking device. The detection process adopts GPRS alarm wireless communication module (4) for communication. When the cable lead lining is damaged or the cable armor (2) is lining-off, the cable armor (2) is downwardly displaced or the cable terminal joint (1) slides out of position, the resistance test sensor (5) connected to one end of the cable armor detection probe can immediately detect no signal, determine the fault location, and upload to a server.

Description

Technical Field

[0001] The present invention relates to the technical field of high voltage electricity, wireless signal transmission and sensor detection, and in particular to a terminal head lead plating shedding detection device and a method for detecting terminal head lead plating shedding by using the device. Background Art

[0002] High-voltage cables are the lifeblood of cities, providing the energy they need for urban life. A cable failure can have an immeasurable impact on urban life. A major fault in high-voltage cable lines involves failure of terminal connectors. Terminal connectors are installed on cable towers, with high-voltage buried cables hanging below. The weight of the high voltage, combined with the tensile force of groundwater on the high-voltage cables, can cause strain at the terminal connectors, ultimately damaging the cable armor and causing cable failures.

[0003] Currently, few technologies can detect problems with the cable armor joints at the terminal connector. The initial symptoms of cable armor joint failure are sinking of the cable armor, which can damage the cable lead lining. This damage can cause severe heating of the cable armor and even lead to water ingress into the cable connector. Complete detachment of the cable armor lead can severely lead to partial discharges in the cable, ultimately causing damage to the terminal connector and unnecessary power outages.

[0004] Traditional cable lead coating inspection relies on eddy current testing. This technology is costly and does not support online monitoring. The eddy current probe must be constantly moved around the cable joint to determine the fault location. This means that eddy current testing can only be used for patrol inspections at cable joints, rather than online monitoring.

[0005] High-voltage cable terminals are installed outdoors in harsh environments, where 220V low-voltage power supplies are often difficult to find. A low-power, maintenance-free, real-time monitoring system is a pressing need. The applicants of this patent have dedicated years of research to this field and have incorporated electromagnetic monitoring technology into high-voltage cable terminal monitoring. This system can detect the displacement or disconnection of high-voltage cable connectors with extremely low power consumption, effectively ensuring early warning before a fault occurs. Summary of the Invention

[0006] In response to the above-mentioned technical problems existing in the prior art, the present invention provides a terminal head lead lining falling-off detection device and method, wherein the cable armor detection probe is fixed on the cable terminal head mounting bracket, and the cable armor marking device is fixed on the cable armor, and the position of the cable armor detection probe is adjusted so that the cable armor detection probe is located at the cable armor marking device. When the cable lead lining is damaged or the cable armor lead lining falls off, the cable armor is displaced downward or the cable terminal connector slides down and out of position, the fault location can be determined and uploaded to the server.

[0007] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions.

[0008] The present invention provides a terminal head lead lining shedding detection device, which includes a cable terminal head mounting bracket, a cable armor marking device, a cable armor detection probe, a signal processing device and a data transmission device. The cable armor marking device is fixed on the cable armor, and the cable armor detection probe, the signal processing device and the data transmission device are fixed on the cable terminal head mounting bracket.

[0009] Preferably, the cable armor marking device is a magnetic device made of magnetic material.

[0010] In any of the above technical solutions, it is preferred that the cable armor marking device is installed on the corrugated sheath of the cable armor.

[0011] In any of the above technical solutions, preferably, a plurality of cable armor marking devices are provided.

[0012] In any of the above technical solutions, preferably, the cable armor detection probe adopts a Hall element.

[0013] In any of the above technical solutions, it is preferred that the cable armor detection probe is installed above the cable armor marking device.

[0014] In any of the above technical solutions, preferably, a plurality of cable armor detection probes are provided.

[0015] In any of the above technical solutions, it is preferred that a cable armor marking device made of a magnetic material is installed on the corrugated sheath of the cable armor, and a cable armor detection probe of a Hall element is correspondingly installed above the cable armor marking device.

[0016] In any of the above technical solutions, it is preferred that multiple cable armor marking devices made of magnetic materials are installed on the corrugated sheath of the cable armor, and multiple cable armor detection probes of Hall elements are installed one by one above the multiple cable armor marking devices.

[0017] In any of the above technical solutions, it is preferred that the cable armor detection probe and the cable armor marking device are wirelessly connected, with the cable outer insulation layer and the heat shrink tube nested in between.

[0018] In any of the above technical solutions, it is preferred that the signal processing device includes a single-chip microcomputer 1, and the single-chip microcomputer 1 adopts a low-power mode single-chip microcomputer.

[0019] In any of the above technical solutions, it is preferred that the single chip microcomputer 1 in low power consumption mode is installed on a cable terminal head mounting bracket.

[0020] In any of the above technical solutions, it is preferred that the data transmission device includes a single-chip microcomputer II, and the single-chip microcomputer II adopts a low-power mode single-chip microcomputer.

[0021] In any of the above technical solutions, it is preferred that the single chip microcomputer II in low power consumption mode is installed on a cable terminal head mounting bracket.

[0022] In any of the above technical solutions, preferably, the data transmission device includes a GPRS alarm wireless communication module.

[0023] In any of the above technical solutions, it is preferred that the data transmission device and the signal processing device are an integrated design structure.

[0024] The present invention also provides a terminal head lead lining peeling detection method. The detection method using any of the above terminal head lead lining peeling detection devices includes:

[0025] Install a cable armor detection probe outside the cable outer sheath, fix the cable armor detection probe on the cable terminal head mounting bracket, and install and fix the cable armor marking device on the cable armor. The cable armor marking device is a magnetic device;

[0026] Adjust the position of the cable armor detection probe so that it is located at the cable armor marking device. The detection process uses the GPRS alarm wireless communication module for communication;

[0027] When the cable lead coating is damaged or the cable armor lead coating falls off, the cable armor drops or the cable terminal connector slides out of position, the resistance test sensor connected to one end of the cable armor detection probe will immediately detect no signal, determine the fault location, and upload it to the server.

[0028] Compared with the prior art, the above technical solution of the present invention has the following beneficial effects:

[0029] The present invention's lead-coated terminal stripping detection device and method can detect potential cable terminal connector failures when the cable armor is displaced, allowing timely repair of the cable terminal connector before the failure develops into a power outage. The present invention's technical solution becomes a prerequisite for ensuring the stable operation of high-voltage cable lines. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0031] Figure 1 The figure is a schematic structural diagram of a preferred embodiment of a terminal head lead plating falling-off detection device according to the present invention.

[0032] Reference numerals: cable terminal connector 1 , cable armor 2 , signal processing device 3 , GPRS alarm wireless communication module 4 , resistance test sensor 5 , cable armor detection probe 6 . DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] In order to solve the technical defects existing in the existing technology of cable terminal structure detection, the embodiment of the present invention proposes a terminal head lead lining falling off detection device and method, wherein the cable armor detection probe is fixed on the cable terminal head mounting bracket, and the cable armor marking device is fixed on the cable armor, and the position of the cable armor detection probe is adjusted so that the cable armor detection probe is located at the cable armor marking device. When the cable lead lining is damaged or the cable armor lead lining falls off, the cable armor is displaced downward or the cable terminal connector slides out of position, the fault location can be determined and uploaded to the server.

[0035] like Figure 1 As shown, the terminal head lead lining loss detection device of this embodiment includes a cable terminal head mounting bracket, a cable armor marking device, a cable armor detection probe 6, a signal processing device 3 and a data transmission device. The cable armor marking device is fixed on the cable armor 2, and the cable armor detection probe 6, the signal processing device 3 and the data transmission device are fixed on the cable terminal head mounting bracket.

[0036] The terminal head lead cladding loss detection device and the cable armor marking device of this embodiment are magnetic devices made of magnetic materials.

[0037] In the terminal head lead lining falling-off detection device of this embodiment, the cable armor marking device is installed at the corrugated sheath of the cable armor 2.

[0038] In the terminal head lead cladding falling-off detection device of this embodiment, one or more cable armor marking devices are provided.

[0039] In the terminal head lead plating loss detection device of this embodiment, the cable armor detection probe 6 adopts a Hall element.

[0040] In the terminal head lead lining shedding detection device of this embodiment, the cable armor detection probe 6 is installed above the cable armor marking device.

[0041] In the terminal head lead plating loss detection device of this embodiment, one or more cable armor detection probes 6 are provided.

[0042] In the terminal head lead lining shedding detection device of this embodiment, a cable armor marking device made of a magnetic material is installed at the corrugated sheath of the cable armor 2, and a cable armor detection probe 6 of a Hall element is correspondingly installed above the cable armor marking device.

[0043] The terminal head lead-plated shedding detection device of this embodiment can also, as needed, use multiple cable armor marking devices made of magnetic materials to be installed on the corrugated sheath of the cable armor 2, and multiple cable armor detection probes 6 of Hall elements are installed one by one above the multiple cable armor marking devices.

[0044] In the terminal head lead lining shedding detection device of this embodiment, the cable armor detection probe 6 and the cable armor marking device are wirelessly connected, with the cable outer insulation layer and the heat shrink tube nested in between.

[0045] In the terminal head lead plating falling-off detection device of this embodiment, the signal processing device 3 includes a single-chip microcomputer 1, and the single-chip microcomputer 1 adopts a low-power mode single-chip microcomputer.

[0046] In the terminal head lead plating shedding detection device of this embodiment, the single chip microcomputer 1 in low power consumption mode is installed on the cable terminal head mounting bracket.

[0047] In the terminal head lead plating shedding detection device of this embodiment, the data transmission device includes a single chip microcomputer II, and the single chip microcomputer II adopts a low power consumption mode single chip microcomputer.

[0048] In the terminal head lead plating shedding detection device of this embodiment, the single chip microcomputer II in low power consumption mode is installed on the cable terminal head mounting bracket.

[0049] In the terminal head lead plating falling-off detection device of this embodiment, the data transmission device includes a GPRS alarm wireless communication module 4 .

[0050] In the terminal head lead plating falling-off detection device of this embodiment, the data transmission device and the signal processing device 3 are an integrated design structure.

[0051] The detection method of the present embodiment using the above-mentioned terminal head lead lining falling-off detection device includes:

[0052] A cable armor detection probe 6 is installed outside the cable outer sheath, fixed on the cable terminal head mounting bracket, and a cable armor marking device is fixed on the cable armor 2, which is a magnetic device; the position of the cable armor detection probe 6 is adjusted so that the cable armor detection probe 6 is located at the cable armor marking device, and the detection process uses a GPRS alarm wireless communication module 4 for communication; when the cable lead is damaged or the lead of the cable armor 2 falls off, the cable armor 2 moves downward or the cable terminal connector 1 slides out of position, the resistance test sensor 5 connected to one end of the cable armor detection probe 6 can immediately detect no signal, determine the fault location, and upload it to the server. The technical solution of the embodiment of the present invention cleverly applies magnetic field detection technology to the high-voltage cable terminal head, and with the low-power GPRS alarm communication system, it can achieve a long service life of 10 years without an external power supply. Compared with the traditional cable terminal head lead falling detection method, the technical cost of this embodiment is low, the stability is high, the monitoring is accurate, and it can be used maintenance-free for up to 10 years.

[0053] The terminal head lead lining falling-off detection device of this embodiment utilizes the penetration characteristics of magnetic materials to install and fix the cable armor marking device on the cable armor 2, and then install the cable armor detection probe 6 outside the cable outer sheath. The cable armor detection probe 6 is fixed to the cable terminal head mounting bracket. In this way, as long as the cable lead lining is damaged or the lead lining of the cable armor 2 falls off, the cable armor 2 moves downward or the cable terminal connector 1 slides out of position, the resistance test sensor 5 connected to one end of the cable armor detection probe 6 will immediately detect no signal, and then the fault location can be determined and uploaded to the server. The device adopts a low-power and maintenance-free design. It can be installed and used for decades once, and its lifespan is the same as the cable life. The device uses a GPRS alarm wireless communication module 4 for communication, eliminating the trouble of traditional communication lines.

[0054] The present embodiment of the lead-coated terminal head removal detection method can detect the potential failure of the cable terminal head connector when the cable armor 2 is displaced, allowing timely repair of the cable terminal head connector 1 before the failure develops into a power outage. The technical solution of the present invention becomes the prerequisite for ensuring the stable operation of high-voltage cable lines.

[0055] The above description is only a description of the preferred embodiment of the present invention and is not intended to limit the scope of the present invention; the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention; without departing from the design spirit of the present invention, any modification, equivalent substitution, improvement, etc. made to the technical solution of the present invention by ordinary engineering and technical personnel in this field shall fall within the scope of protection determined by the claims of the present invention.

Claims

1. A terminal head lead lining falling off detection device, comprising a cable terminal head mounting bracket, characterized in that: It also includes a cable armor marking device, a cable armor detection probe, a signal processing device and a data transmission device, wherein the cable armor marking device is fixed on the cable armor, and the cable armor detection probe, the signal processing device and the data transmission device are fixed on the cable terminal head mounting bracket; The cable armor marking device is a magnetic device made of magnetic material and is installed on the corrugated sheath of the cable armor; the cable armor detection probe adopts a Hall element and is installed above the cable armor marking device; The cable armor detection probe and the cable armor marking device are wirelessly connected, with the cable outer insulation layer and the heat shrink tube nested in between.

2. The terminal head lead lining falling-off detection device according to claim 1, characterized in that: A plurality of cable armor marking devices are provided.

3. The terminal head lead lining falling-off detection device according to claim 1, characterized in that: A plurality of cable armor detection probes are provided.

4. The terminal head lead lining falling-off detection device according to claim 2 or 3, characterized in that: A cable armor marking device made of magnetic material is installed on the corrugated sheath of the cable armor, and a cable armor detection probe of a Hall element is correspondingly installed above the cable armor marking device.

5. The terminal head lead lining falling-off detection device according to claim 2 or 3, characterized in that: A plurality of cable armor marking devices made of magnetic materials are installed on the corrugated sheath of the cable armor, and a plurality of cable armor detection probes of Hall elements are installed one by one above the plurality of cable armor marking devices.

6. A terminal head lead lining fall-off detection method, using a terminal head lead lining fall-off detection device according to any one of claims 1 to 5, characterized in that: The test method includes: Install a cable armor detection probe outside the cable outer sheath, fix the cable armor detection probe on the cable terminal head mounting bracket, and install and fix the cable armor marking device on the cable armor. The cable armor marking device is a magnetic device; Adjust the position of the cable armor detection probe so that it is located at the cable armor marking device. The detection process uses the GPRS alarm wireless communication module for communication; When the cable lead coating is damaged or the cable armor lead coating falls off, the cable armor drops or the cable terminal connector slides out of position, the resistance test sensor connected to one end of the cable armor detection probe will immediately detect no signal, determine the fault location, and upload it to the server.

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