CN114113892B - Cable connector lead sealing detection device and method - Google Patents
Cable connector lead sealing detection device and method Download PDFInfo
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- CN114113892B CN114113892B CN202111405262.2A CN202111405262A CN114113892B CN 114113892 B CN114113892 B CN 114113892B CN 202111405262 A CN202111405262 A CN 202111405262A CN 114113892 B CN114113892 B CN 114113892B
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- 238000007789 sealing Methods 0.000 title claims abstract description 72
- 238000001514 detection method Methods 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title abstract description 6
- 230000005611 electricity Effects 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 238000004891 communication Methods 0.000 claims description 6
- 230000004888 barrier function Effects 0.000 claims 1
- 230000000903 blocking effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 239000011358 absorbing material Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention relates to a cable joint lead sealing detection device and a method, wherein the device comprises a shell, a first shell part, a second shell part and an insulating flange; the cable and the armor of the cable penetrate through the shell; the lead sealing layers are arranged at two ends of the shell; the detection device is arranged in the first shell part and the second shell part and is close to the lead sealing layer, and comprises a magnetic core, a temperature and humidity sensing unit, a signal sending unit and an electricity taking coil, wherein the temperature and humidity sensing unit, the signal sending unit and the electricity taking coil are integrated on the magnetic core; wherein the magnetic core is sleeved on the cable armor, and the electric taking wire is sleeved on the magnetic core; the control device comprises an external control unit, a first signal receiving unit for receiving signals of the temperature and humidity sensing unit and a second signal receiving unit for receiving signal intensity and judging a lead sealing damage state, wherein the first signal receiving unit and the second signal receiving unit are respectively connected with the control unit; the lead sealing layer is damaged to cause temperature and humidity change in the shell, and the lead sealing state of the cable can be accurately judged through mutual evidence of the first signal unit and the second signal unit.
Description
Technical Field
The invention relates to the field of high-voltage cables, in particular to a cable connector lead sealing detection device and method.
Background
The lead sealing technology is often adopted at the high-voltage cable main body joint, and is influenced by factors such as self-gravity, underground settlement and cable pulling-up of the cable, lead sealing damage can occur at the cable lead sealing part, so that the cable joint is water-in or broken, the cable joint is finally damaged, accidents and power failure are caused, and the safety problem is caused. The traditional cable joint lead sealing detection device can only judge whether the lead sealing is damaged through the penetration of wireless signals, the wireless signals are seriously interfered, and the damage degree of the lead sealing cannot be further judged so as to achieve more accurate detection; the cable connector lead sealing detection device and method are provided in consideration of urban safety electricity utilization, the lead sealing is considered to be possibly damaged by single wireless signal strength change and gives an early warning, the temperature and humidity change in the interior is detected through the temperature and humidity sensing unit to assist the single wireless signal in judging the damage of the lead sealing, and more accurate detection is achieved, wherein the temperature and humidity sensing unit can also early warn the damage of the cable connector and other places or directly switch to a comprehensive detection state when the wireless signal strength detects faults; and the power consumption efficiency is improved, the service life of the cable is prolonged, and the urban power consumption safety is ensured by feeding the power to the terminal equipment in real time.
Disclosure of Invention
Another technical problem to be solved by the present invention is to overcome the defect that in the prior art, lead sealing breakage of a cable joint cannot be accurately detected, thereby providing a lead sealing detection device for a cable joint, comprising:
the shell comprises a first shell part, a second shell part and an insulating flange, wherein the insulating flange is embedded in the first shell part and the second shell part, and the first shell part and the second shell part are connected through the insulating flange;
a cable, an armor of the cable passing through the first and second shell portions;
the lead sealing layer is used for sealing lead at two ends of the shell;
the detection device is arranged in the first shell and the second shell, is close to the lead sealing layer and comprises a magnetic core, a temperature and humidity sensing unit, a signal sending unit and an electricity taking coil, wherein the temperature and humidity sensing unit, the signal sending unit and the electricity taking coil are integrated on the magnetic core; the magnetic core is sleeved on the cable armor, the wire taking ring is sleeved on the magnetic core, and the temperature and humidity detection unit and the signal sending unit are connected with the wire taking ring;
the control device comprises a control unit, a first signal receiving unit and a second signal receiving unit, wherein the first signal receiving unit is arranged on the outer side of the insulating flange, the second signal receiving unit is arranged on the outer side of the lead sealing layer and wrapped by a signal shielding layer, the first signal receiving unit is used for receiving data of the temperature and humidity sensing unit, the second signal receiving unit is used for receiving a signal intensity db value of the temperature and humidity sensing unit, and the first signal receiving unit and the second signal receiving unit are respectively connected with the control unit.
Preferably, the cable joint lead sealing detection device further comprises a water blocking layer, wherein the water blocking layer is arranged in the first shell part and the second shell part and is close to the detection device.
Preferably, the second receiving unit is composed of a plurality of receiving units, and multi-angle detection is performed.
Preferably, the temperature and humidity sensing unit has an outer wrapping moisture absorbing layer.
Preferably, the cable joint lead sealing detection device further comprises a terminal server, and the terminal server is connected with the control device.
Preferably, the signal sending unit, the first signal receiving unit and the second signal receiving unit are all provided with wireless communication modules.
Preferably, the cable joint lead sealing detection device according to any one of the preceding claims is used, comprising the following steps: the temperature and humidity sensing unit and the signal unit are powered by the power taking coil, so that the detection device works, and the first signal receiving unit arranged at the insulating flange and the second signal receiving unit arranged at the lead sealing layer feed back the received signal source to the control unit; the first signal receiving unit continuously receives temperature and humidity data in the shell, the second signal receiving unit judges the fracture state of the lead sealing layer according to the received temperature and humidity signal intensity, and the state of lead sealing of the cable is judged more accurately through mutual evidence of the temperature and humidity of the first signal unit and the signal intensity of the second signal unit; and finally, the control unit transmits the received signals to the terminal server through GPRS, ethernet and the like.
Compared with the prior art, the invention has the beneficial effects that:
according to the lead sealing detection device and the lead sealing detection method for the cable joint, provided by the technical scheme, the temperature and humidity sensing unit is adopted to detect the temperature and humidity conditions in the shell, the first signal receiving unit is used for continuously receiving temperature and humidity signal data in the shell, the second signal receiving unit is used for judging the fracture state of the lead sealing layer according to the received temperature and humidity signal intensity, the temperature and humidity change of the joint in the shell is caused by lead sealing breakage, and then the temperature and humidity data of the first signal unit and the signal intensity of the second signal unit are mutually evidence, so that the lead sealing state of the cable is accurately judged; and finally, the control unit transmits the lead sealing fracture condition and the temperature and humidity signal to the server through GPRS, ethernet and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a lead sealing detection device for a cable connector.
Fig. 2 is a schematic circuit diagram of a detecting device and a control device of the cable connector lead sealing detecting device shown in fig. 1.
Fig. 3 is a schematic diagram of a magnetic core structure of the lead sealing detection device for a cable connector shown in fig. 1.
Reference numerals illustrate:
10. a housing; 11. a first shell portion; 12. a second shell portion; 13. an insulating flange; 14. a cable; 15. A water blocking layer; 16. sealing the lead layer; 17. a signal shielding layer; 20. a temperature and humidity sensing unit; 21. a signal transmitting unit; 22. the power taking coil, 23 and the first signal receiving unit; 24. a second signal receiving unit; 25. a control unit; 26. a terminal server; 27. a magnetic core.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
As shown in fig. 1 to 3, an embodiment of the present invention provides a cable joint lead sealing detection device, including: a housing 10, a first housing part 11, a second housing part 12 and an insulating flange 13, wherein the insulating flange 13 is embedded in the first housing part 11 and the second housing part 12, and the first housing part 11 and the second housing part 12 are connected through the insulating flange 13; the shell 10 needs to shield part of interference signals in operation, so the shell 10 can be made of copper materials, and meanwhile, in order to better send out signals of the built-in modules of the shell 10, the insulating flange 13 can be made of plastics so as to ensure normal penetration of the signals; a cable 14, the armor of the cable 14 passing through the first and second shell portions 11, 12; specifically, lead sealing layers 16 are disposed at both ends of the casing 10 through lead sealing treatment, so that the casing 10 forms a closed cavity.
The detection device is arranged in the first shell part 11 and the second shell part 12 and is close to the lead sealing layer 16, and comprises a magnetic core 27, a temperature and humidity sensing unit 20, a signal sending unit 21 and an electric taking coil 22, wherein the temperature and humidity sensing unit 20, the signal sending unit 21 and the electric taking coil 22 are integrated on the magnetic core 27; the magnetic core 27 is sheathed on the cable 14, the power taking coil 22 is sheathed on the magnetic core 27, the temperature and humidity detecting unit 20 and the signal transmitting unit 21 are connected with the power taking coil 22, specifically, the power taking coil 22 supplies power to the temperature and humidity detecting unit 20 and the signal transmitting unit 21, the temperature and humidity detecting unit 20 works, and a detection signal is transmitted through the signal transmitting unit 21.
A control device including a control unit 25, a first signal receiving unit 23, and a second signal receiving unit 24; wherein, the first signal receiving unit 23 is arranged outside the insulating flange 13, the second signal receiving unit 24 is arranged outside the lead sealing layer 16 and is wrapped by the signal shielding layer 17, so as to avoid the receiving interference caused by the diffraction of part of built-in signals to the second receiving unit 24 through the insulating flange 13; thereby ensuring the accurate detection of the signal intensity of the second receiving unit 24 after the lead sealing layer 16 is damaged; the specific signal shielding layer 17 can be made of a wave-absorbing material or a material formed by compounding the wave-absorbing material and a metal material; the first signal receiving unit 23 is configured to receive the digital signal of the temperature and humidity sensing unit 20, the second signal receiving unit 24 is configured to receive the signal strength db value of the temperature and humidity sensing unit 20, and the first signal receiving unit 23 and the second signal receiving unit 24 are respectively connected to the control unit 25.
The specific first signal receiving unit 23 can continuously receive the temperature and humidity data sent by the signal sending unit 21 from the insulating flange 13; the second signal receiving unit 24 is arranged on the lead sealing layer 16 and is wrapped by a signal shielding layer, and is not communicated with the signal sending unit 21 or has weaker signal communication; correspondingly, when the signal strength db of the second signal receiving unit 24 is increased, it is determined that the lead sealing layer 16 is damaged or broken, and then the specific digital signal of the specific temperature and humidity received by the first signal receiving unit 23 is combined to determine the damage degree of the lead sealing layer 16, so as to achieve more accurate detection, and when the receiving work of the first signal receiving unit 23 and the second signal receiving unit 24 is completed, the control device 25 will integrate the received signals.
Specifically, the cable joint lead sealing detection device further comprises a water blocking layer 15, wherein the water blocking layer 15 is arranged in the first shell part 11 and the second shell part 12 and is close to the detection device, so that water vapor is prevented from entering the shell 10 due to factors such as weather, and normal operation of the temperature and humidity detection unit 20 is accordingly disturbed.
Specifically, the second receiving unit 24 is composed of a plurality of receiving units, so that multi-angle detection can be performed, and the receiving units are uniformly distributed around the lead sealing layer 16, thereby improving detection sensitivity.
Specifically, the temperature and humidity sensing unit 20 has an outer wrapping moisture absorption layer, and the setting of the moisture absorption layer can make the data that the temperature and humidity sensing unit 20 detected more accurate.
Specifically, the cable joint lead sealing detection device further includes a terminal server 26, the terminal server 26 is connected to the control device 25, and the control unit 25 integrates signals received by the first signal receiving unit 23 and the second signal receiving unit 24, and transmits the signals to the server through GPRS, ethernet, and the like.
Specifically, the signal transmitting unit 21, the first signal receiving unit 23, and the second signal receiving unit 24 are all provided with wireless communication modules.
The invention also provides a method for detecting lead sealing of the cable joint, which is carried out by using the device for detecting lead sealing of the cable joint, and comprises the following steps: the temperature and humidity sensing unit 20 and the signal transmitting unit 21 are powered by the power taking unit 22, so that the detection device works, and the first signal receiving unit 23 arranged at the insulating flange 13 detects the temperature and humidity conditions inside the shell 10 at the moment of entering a continuous working state; the second signal receiving unit 24 arranged on the lead sealing layer 16 is wrapped by the signal shielding layer 17 and is not communicated with the signal transmitting unit 21 or has weaker signal communication; specifically, the first signal receiving unit 23 is adopted to stably receive the temperature and humidity data of the temperature and humidity sensing unit 20, the second signal receiving unit 24 is adopted to receive the temperature and humidity signal intensity db value to judge the fracture state of the lead sealing layer 16, and the received temperature and humidity data of the first signal unit 23 and the received signal intensity db value of the second signal unit are mutually evidence, so that the lead sealing state of the cable is accurately judged; finally, the control unit 25 transmits the collected signals of the lead sealing layer 16 and the temperature and humidity signals to the terminal server through GPRS, ethernet and the like.
The above embodiments are only preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, but any insubstantial changes and substitutions made by those skilled in the art on the basis of the present invention are intended to be within the scope of the present invention as claimed.
Claims (7)
1. The utility model provides a cable joint seal lead detection device which characterized in that includes:
the shell comprises a first shell part, a second shell part and an insulating flange, wherein the insulating flange is embedded in the first shell part and the second shell part, and the first shell part and the second shell part are connected through the insulating flange;
a cable, an armor of the cable passing through the first and second shell portions;
the lead sealing layers are arranged at the two ends of the shell through lead sealing treatment;
the detection device is arranged in the first shell part and the second shell part, is close to the lead sealing layer, and comprises a magnetic core, a temperature and humidity sensing unit, a signal sending unit and an electricity taking coil, wherein the temperature and humidity sensing unit, the signal sending unit and the electricity taking coil are integrated on the magnetic core; the temperature and humidity sensing unit and the signal sending unit are connected with the power taking coil;
the control device comprises a control unit, a first signal receiving unit and a second signal receiving unit, wherein the first signal receiving unit is arranged on the outer side of the insulating flange, the second signal receiving unit is arranged on the outer side of the lead sealing layer and wrapped by a signal shielding layer, the first signal receiving unit is used for receiving data of the temperature and humidity sensing unit, the second signal receiving unit is used for receiving a signal intensity db value of the temperature and humidity sensing unit, and the first signal receiving unit and the second signal receiving unit are respectively connected with the control unit.
2. The cable splice lead sealing device of claim 1, further comprising a water barrier disposed within both the first and second housing portions and adjacent the detection device.
3. The device for detecting lead sealing of a cable joint according to claim 1, wherein the second signal receiving unit comprises a plurality of signal receiving units, and is used for detecting at multiple angles.
4. The cable joint lead sealing detection device according to claim 1, wherein the temperature and humidity sensing unit is provided with an outer wrapping moisture absorbing layer.
5. The cable splice lead sealing device of claim 1, further comprising a terminal server coupled to the control device.
6. The device for detecting lead sealing of a cable joint according to claim 1, wherein the signal transmitting unit, the first signal receiving unit and the second signal receiving unit are all provided with wireless communication modules.
7. A cable joint lead sealing detection method comprising the cable joint lead sealing detection device according to any one of claims 1 to 6, characterized by comprising the steps of: the temperature and humidity sensing unit and the signal transmitting unit are powered by the power taking coil, so that the detection device works, and meanwhile, a first signal receiving unit arranged at the insulating flange and a second signal receiving unit arranged at the lead sealing layer feed back a received signal source to the control unit; the first signal receiving unit continuously receives temperature and humidity data in the shell, the second signal receiving unit judges the fracture state of the lead sealing layer according to the received temperature and humidity signal intensity, and the state of lead sealing of the cable is judged more accurately through mutual evidence of the temperature and humidity of the first signal receiving unit and the signal intensity of the second signal receiving unit; and finally, the control unit transmits the received signals to the terminal server through GPRS and Ethernet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111405262.2A CN114113892B (en) | 2021-11-24 | 2021-11-24 | Cable connector lead sealing detection device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111405262.2A CN114113892B (en) | 2021-11-24 | 2021-11-24 | Cable connector lead sealing detection device and method |
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| Publication Number | Publication Date |
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| CN114113892A CN114113892A (en) | 2022-03-01 |
| CN114113892B true CN114113892B (en) | 2024-01-16 |
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| CN202111405262.2A Active CN114113892B (en) | 2021-11-24 | 2021-11-24 | Cable connector lead sealing detection device and method |
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|---|---|---|---|---|
| SU54465A1 (en) * | 1938-02-07 | 1938-11-30 | М.Н. Тузов | Pliers for connecting test lead to lead sheath armored cables |
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2021
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| CN114113892A (en) | 2022-03-01 |
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