Cable joint lead damage detection device and method based on radio frequency identification technology

Abstract

The present application relates to a kind of based on radio frequency identification technology's cable joint wax damage detection device and method, the detection device mainly includes the electronic tag of being built-in in the copper shell of cable joint and the armor connection of cable, and the electronic tag reader of being externally placed in the copper shell of cable joint and the armor connection of cable, and electronic tag outer sheath;The armor of high-voltage cable and the copper shell of cable joint implement wax link processing after forming a metal closed cavity, the electronic tag reader of being externally placed in the copper shell of cable joint and the armor connection of cable and being built-in in the copper shell of cable joint and the armor connection of cable electronic tag each other match, the existence and ID number of identification label;When the copper shell of cable joint and the armor connection of cable is complete, built-in electronic tag will not be read;When the metal closed cavity of copper shell of cable joint and the armor and wax is damaged, electronic tag reader can read built-in electronic tag, effectively detect whether wax is damaged.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of high-voltage electrical technology and automatic control equipment technology, in particular to a cable joint lead damage detection device and method based on radio frequency identification technology. BACKGROUND

[0002] At the high-voltage cable joint, the cable joint and the cable main body outer sheath are linked by lead lining technology. Influenced by factors such as cable self-gravity, underground settlement, cable lifting, etc., the cable lead lining often breaks. The broken lead lining leads to water entering the cable joint, the circulation of the cable outer sheath loop, and ultimately causes the cable joint to be damaged, the cable head to burst, and the people's life to be unprotected, resulting in a large economic loss.

[0003] Traditional cable joint lead breakage detection mainly includes eddy current flaw detection technology and X-ray technology. The eddy current flaw detection technology cannot achieve accurate detection because the contact distance between the eddy current flaw detection probe and the cable lead lining is large and changes greatly due to the irregular shape of the cable lead lining and the 5mm thick heat shrink tube. In addition, the eddy current flaw detection technology requires the probe to move constantly, and each corner around the lead lining needs to be detected without dead angles, which makes it difficult to achieve online detection.

[0004] X-ray technology has high detection cost and causes irreversible aging of the cable inner rubber structure during work, which shortens the service life of the cable and is not suitable for online detection.

[0005] Applicants have found that after the high-voltage cable armor and joint copper shell are linked by lead lining, a sealed metal cavity is formed, which can effectively shield electromagnetic wave signals. When the lead lining breaks, electromagnetic wave signals can penetrate the originally sealed cavity through diffraction. Based on this principle, the applicants have developed a cable joint lead damage detection technology based on radio frequency identification technology. At the same time, due to the high temperature of the molten lead used during cable lead lining, an outer sheath for protecting the electronic tag is designed to detect the damage of the cable joint lead lining part. SUMMARY

[0006] To solve the above technical problems in the prior art, the present application provides a cable joint lead damage detection device and method based on radio frequency identification technology, which can effectively detect the damage of the cable joint lead lining part.

[0007] To achieve the above purpose, the present application adopts the following technical solutions.

[0008] The present application provides a cable joint lead damage detection device based on radio frequency identification technology, which mainly comprises an electronic tag embedded in the connection between the copper shell of the cable joint and the cable armor, and an electronic tag reader externally arranged at the connection between the copper shell of the cable joint and the cable armor, for detecting the cable lead of the connection between the copper shell of the cable joint and the cable armor.

[0009] Preferably, the electronic tag reader and the electronic tag form a wireless energy transmission and data communication system to realize wireless energy transmission and data communication.

[0010] In any of the above technical solutions, preferably, the electronic tag is embedded in the connection between the copper shell of the cable joint and the cable armor, and forms a metal closed cavity with the lead.

[0011] In any of the above technical solutions, preferably, the electronic tag is a UHF RFID ultra-high frequency electronic tag.

[0012] In any of the above technical solutions, preferably, the electronic tag is a microwave 2.4GHz electronic tag.

[0013] In any of the above technical solutions, preferably, the electronic tag is an acoustic magnetic identification technology tag.

[0014] In any of the above technical solutions, preferably, the electronic tag is a passive electronic tag, an active electronic tag or a semi-active electronic tag.

[0015] In any of the above technical solutions, preferably, the electronic tag is one or more electronic tags, which are used to form a multi-angle identification system.

[0016] In any of the above technical solutions, preferably, the electronic tag reader externally arranged at the connection between the copper shell of the cable joint and the cable armor is matched with the electronic tag embedded in the connection between the copper shell of the cable joint and the cable armor, to identify the existence and ID number of the tag.

[0017] In any of the above technical solutions, preferably, the electronic tag reader is provided with a wireless communication module or a wired communication device to send the identification result and the identification ID number.

[0018] In any of the above technical solutions, the detection device further comprises an electronic tag outer sheath.

[0019] In any of the above technical solutions, the electronic tag outer sheath is embedded in the metal closed cavity composed of the copper shell of the cable joint, the cable armor and the cable lead.

[0020] Preferably, in any of the above technical solutions, the outer sheath of the electronic tag is a one-way identification structure, one side of which is provided with a metal shielding layer and the other side is read by an RFID reader.

[0021] Preferably, in any of the above technical solutions, the outer sheath of the electronic tag is filled with a high-temperature-resistant heat-insulating material.

[0022] Preferably, in any of the above technical solutions, the outer sheath of the electronic tag is externally provided with one or more electronic tags; and the outer sheath of the electronic tag and the internally provided one or more electronic tags form a multi-angle identification system.

[0023] The application also provides a cable joint lead encasement damage detection method based on the RFID technology, which adopts the cable joint lead encasement damage detection device based on the RFID technology as described in any of the above.

[0024] The cable joint copper shell, the cable armor and the lead encasement form a metal closed cavity; an electronic tag internally provided at the connection between the cable joint copper shell and the cable armor and an electronic tag reader externally provided at the connection between the cable joint copper shell and the cable armor are arranged; the electronic tag reader externally provided at the connection between the cable joint copper shell and the cable armor is matched with the electronic tag internally provided at the connection between the cable joint copper shell and the cable armor to identify the existence and ID number of the tag; the metal closed cavity is internally provided with an electronic tag outer sheath with a one-way identification structure; when the lead encasement at the connection between the cable joint copper shell and the cable armor is complete, the internally provided electronic tag cannot be read; when the metal closed cavity formed by the cable joint copper shell, the cable armor and the lead encasement is damaged, the electronic tag reader can read the internally provided electronic tag.

[0025] Compared with the traditional eddy current flaw detection and X-ray detection technologies for detecting the damage of the lead encasement part of the cable joint, the cable joint lead encasement damage detection device based on the RFID technology and the detection method thereof can effectively detect the damage of the lead encasement part of the cable joint, and have the advantages of lower cost, higher reliability, faster detection, lower power consumption and easier online detection. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0027] Figure 1A detection device structure schematic diagram of a preferred embodiment of the cable joint lead damage detection device based on the radio frequency identification technology according to the present application is shown in the figure.

[0028] Figure 2 A cable joint lead damage detection device based on the radio frequency identification technology according to the present application is shown in the figure. Figure 1 A schematic diagram of the outer sheath structure of the electronic tag of the embodiment shown in the figure.

[0029] Figure 3 A schematic diagram of the outer sheath structure of the electronic tag of the embodiment shown in the figure. Figure 1 A side view of the outer sheath of the electronic tag of the embodiment shown in the figure.

[0030] Reference numerals: 1, electronic tag, 2, lead, 3, thermal insulation material, 4, metal shielding layer. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0032] In order to overcome the problems existing in the prior art of cable joint lead damage detection, the embodiments of the present application propose a cable joint lead damage detection device and method based on radio frequency identification technology. Compared with the prior art, this online detection technology has lower cost, higher reliability, and faster detection.

[0033] The cable joint lead damage detection device based on the radio frequency identification technology described in the embodiments has the structure shown in the figure. Figures 1 to 3 The cable joint lead damage detection device based on the radio frequency identification technology described in the embodiments has the structure shown in the figure.

[0034] The detection device described in the embodiments has a wireless energy transmission and data communication system composed of the electronic tag reader and the electronic tag (1), which realizes wireless energy transmission and data communication.

[0035] The detection device described in the embodiments has the electronic tag (1) built-in at the connection between the cable joint copper shell and the cable armor, and the electronic tag (1) can be a UHF RFID ultra-high frequency electronic tag, a microwave 2.4GHz electronic tag, or a tag using acoustic magnetic identification technology.

[0036] The detection device described in the embodiment adopts a passive electronic tag, an active electronic tag or a semi-active electronic tag for the electronic tag (1).

[0037] The detection device described in the embodiment adopts one or more electronic tags to constitute a multi-angle identification system.

[0038] The detection device described in the embodiment adopts an electronic tag reader outside the cable joint copper shell and cable armor connection and an electronic tag (1) inside the cable joint copper shell and cable armor connection. The electronic tag reader and the built-in electronic tag can identify the existence and ID number of the tag.

[0039] The detection device described in the embodiment adopts an electronic tag reader with a wireless communication module or a wired communication device. The electronic tag reader supports wireless and wired communication to send the identification result and the identification ID number.

[0040] The detection device described in the embodiment can further include an electronic tag outer sheath. The electronic tag outer sheath is built into the metal closed cavity composed of the cable joint copper shell, the cable armor and the cable lead (2) to protect the electronic tag and resist high temperature, and can be used for one-way identification.

[0041] The detection device described in the embodiment adopts a one-way identification structure for the electronic tag outer sheath. One side of the electronic tag outer sheath adopts a metal shielding layer (4), and the other side adopts an RFID reader to read the electronic tag. The electronic tag outer sheath structure is filled with heat-resistant insulation material (3) to protect the electronic tag from being damaged during the lead (2) construction. The insulation material (3) can be selected from asbestos, glass fiber or aerogel.

[0042] The detection device described in the embodiment adopts an electronic tag outer sheath outside one or more electronic tags (1). The electronic tag outer sheath and the built-in one or more electronic tags (1) constitute a multi-angle identification system.

[0043] The lead bushing (2) is connected to the cable armor and the copper shell of the cable joint of the high-voltage cable, and the copper shell of the cable joint, the connection of the cable armor and the lead bushing (2) form a metal closed cavity; the electronic tag (1) is arranged in the connection of the cable armor and the copper shell of the cable joint, and the electronic tag reader is arranged outside the connection of the cable armor and the copper shell of the cable joint; the electronic tag reader arranged outside the connection of the cable armor and the copper shell of the cable joint is matched with the electronic tag (1) arranged in the connection of the cable armor and the copper shell of the cable joint, and the existence and ID number of the tag are identified; the metal closed cavity is provided with the electronic tag outer sheath with a one-way identification structure; when the lead bushing (2) in the connection of the cable armor and the copper shell of the cable joint is complete, the electronic tag (1) arranged in the connection cannot be read; when the metal closed cavity formed by the copper shell of the cable joint, the cable armor and the lead bushing (2) is damaged, the electronic tag reader can read the electronic tag (1) arranged in the connection.

[0044] A plurality of electronic tags (1) are arranged to form a multi-angle identification system. The lead bushing (2) is connected to the cable armor and the copper shell of the cable joint of the high-voltage cable, and the copper shell of the cable joint, the connection of the cable armor and the lead bushing (2) form a metal closed cavity. The above detection device is used, the electronic tag (1) is arranged in the connection of the cable armor and the copper shell of the cable joint, and the electronic tag reader is arranged outside the connection of the cable armor and the copper shell of the cable joint; the electronic tag reader arranged outside the connection of the cable armor and the copper shell of the cable joint is matched with the electronic tag (1) arranged in the connection of the cable armor and the copper shell of the cable joint, and the existence and ID number of the tag are identified. The metal closed cavity is provided with the electronic tag outer sheath with a one-way identification structure, and the electronic tag outer sheath and the plurality of electronic tags (1) arranged in the connection form a multi-angle identification system. When the lead bushing (2) in the connection of the cable armor and the copper shell of the cable joint is complete, the electronic tag (1) arranged in the connection cannot be read; when the metal closed cavity formed by the copper shell of the cable joint, the cable armor and the lead bushing (2) is damaged, the electronic tag reader can read the electronic tag (1) arranged in the connection.

[0045] The cable joint lead damage detection device and method based on the radio frequency identification technology, which is adopted in the embodiment, adopts the electronic tag which is built-in at the connection position of the cable joint copper shell and the cable armor, and the electronic tag reader which is externally arranged at the connection position of the cable joint copper shell and the cable armor. When the lead at the connection position of the cable joint copper shell and the cable armor is complete, the built-in electronic tag cannot be read. When the metal cavity composed of the cable copper shell, the cable armor and the lead is damaged, the electronic tag reader can read the internal electronic tag. Compared with the traditional eddy current flaw detection and X-ray detection technology for detecting the damage of the lead part of the cable joint, the technical scheme adopted in the embodiment can realize effective detection when the lead part of the cable joint is damaged, and has the advantages of lower cost, higher reliability, faster detection, lower power consumption and easier online detection. Compared with the traditional electronic tag identification technology, the electronic tag outer sheath is additionally arranged in the technical scheme, and the electronic tag outer sheath has the technical characteristics of high temperature resistance and one-way identification.

[0046] In the implementation, when studying how to detect the damage of the cable lead, after continuous experiments and elimination of various detection methods, it is determined that the electronic tag identification technology is effective in detecting the damage of the cable lead. After comparison test of low-frequency electronic tags, high-frequency electronic tags, ultrahigh-frequency electronic tags and acoustic magnetic electronic tags, it is finally tested that the penetration of low-frequency electronic tags and high-frequency electronic tags on the damaged part of the cable lead is not as good as that of ultrahigh-frequency electronic tags and microwave electronic tags, and the penetration distance of acoustic magnetic electronic tags is between that of high-frequency electronic tags and ultrahigh-frequency electronic tags. Finally, it is determined to use ultrahigh-frequency electronic tags and microwave electronic tags (UHF RFID ultrahigh-frequency electronic tags and microwave 2.4GHz electronic tags) for the damage detection of the cable lead part, so that the implementation of the technical scheme is stable and effective.

[0047] In the implementation, for the lead lining process, the electronic tag is installed near high temperature, and the high temperature resistance of the electronic tag is relatively weak. The electronic tag outer sheath is arranged to solve the safety and stability problems of the electronic tag.

[0048] In the implementation, for the damage of the lead lining part at any angle, the internal electronic tag can be detected through the electronic tag identification area. The electronic tag outer sheath is designed as a circle, and four electronic tags are implanted in the inside to cope with the lead lining damage and identification problems in four directions.

[0049] In the implementation, for the high temperature during the lead lining construction, the electronic tag outer sheath adopts a high-temperature-resistant material, and is filled with a high-temperature-resistant material such as asbestos in the inside.

[0050] In the embodiment, in order to prevent electromagnetic wave signals from diffraction from other non-lead parts, and improve the identification effect of the electronic tag. On one side of the outer sheath of the electronic tag, a metal shielding layer is used to reduce the interference on one side of the electronic tag and to strengthen the signal on the side that needs orientation.

[0051] In the embodiment, for the cable joint that can take power, a device combining a power taking module and an active electronic tag is used. Stronger identification effect is achieved.

[0052] In the embodiment, for the cable joint that can take power, a device combining a power taking module and an active electronic tag is used. Stronger identification effect is achieved.

[0053] In the embodiment, for the cable joint that can take power or battery, a semi-active electronic tag is set to achieve stronger identification effect.

[0054] The above only describes the preferred embodiments of the present application, and does not limit the scope of the present application; the above only describes the specific embodiments of the present application, and does not limit the protection scope of the present application; any modification, equivalent replacement, improvement, etc. of the technical solutions of the present application made by the ordinary engineering and technical personnel without departing from the design spirit of the present application shall fall within the protection scope determined by the claims of the present application.

Claims

1. A cable joint lead-lined lining damage detection device based on radio frequency identification technology, used for detecting the lead-lined lining of cables at the connection between the copper shell and the cable armor of the cable joint, characterized in that: The detection device comprises an electronic tag built-in at the connection between the cable joint copper shell and the cable armor, and an electronic tag reader externally arranged at the connection between the cable joint copper shell and the cable armor; the electronic tag reader and the electronic tag form a wireless energy transmission and data communication system, realizing wireless energy transmission and data communication; the built-in electronic tag is in a metal closed cavity formed by the connection between the cable joint copper shell and the cable armor and the built-in lead; when the built-in lead at the connection between the cable joint copper shell and the cable armor is complete, the built-in electronic tag cannot be read; when the metal closed cavity formed by the connection between the cable joint copper shell and the cable armor and the built-in lead is damaged, the electronic tag reader can read the built-in electronic tag. The detection device further comprises an electronic tag outer sheath built-in inside the metal closed cavity formed by the cable joint copper shell, the cable armor and the built-in lead, the electronic tag outer sheath is a one-way identification structure, one side of which is provided with a metal shielding layer, and the other side of which is provided with an RFID reader for reading the electronic tag, and the electronic tag outer sheath structure is filled with a high-temperature-resistant heat insulation material.

2. The radio frequency identification technology based cable splice lead damage detection apparatus of claim 1, wherein: The electronic tag adopts a UHF RFID ultra-high frequency electronic tag, a microwave 2.4GHz electronic tag or a tag of acoustic magnetic identification technology.

3. The radio frequency identification technology based cable splice lead damage detection apparatus of claim 1, wherein: The electronic tag reader is provided with a wireless communication module or a wired communication device, and sends an identification result and an identification ID number.

4. The radio frequency identification technology based cable splice lead damage detection apparatus of claim 1, wherein: The electronic tag outer sheath is externally arranged at one or more electronic tags; the electronic tag outer sheath and the built-in one or more electronic tags form a multi-angle identification system.

5. A method for detecting damage of a lead of a cable joint based on a radio frequency identification technology, which employs the apparatus for detecting damage of a lead of a cable joint based on a radio frequency identification technology according to any one of claims 1 to 4, characterized by, The detection method comprises: performing built-in lead linking processing on the cable armor and the cable joint copper shell of the high-voltage cable, the connection between the cable joint copper shell and the cable armor and the built-in lead forming a metal closed cavity; setting an electronic tag built-in at the connection between the cable joint copper shell and the cable armor and an electronic tag reader externally arranged at the connection between the cable joint copper shell and the cable armor, the electronic tag reader externally arranged at the connection between the cable joint copper shell and the cable armor and the electronic tag built-in at the connection between the cable joint copper shell and the cable armor being matched with each other to identify the existence and ID number of the tag; the metal closed cavity is built-in with an electronic tag outer sheath having a one-way identification structure; when the built-in lead at the connection between the cable joint copper shell and the cable armor is complete, the built-in electronic tag cannot be read; when the metal closed cavity formed by the connection between the cable joint copper shell and the cable armor and the built-in lead is damaged, the electronic tag reader can read the built-in electronic tag.

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