CN215772515U - Intelligent oil-filled sleeve type outdoor cable terminal - Google Patents
Intelligent oil-filled sleeve type outdoor cable terminal Download PDFInfo
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- CN215772515U CN215772515U CN202122061179.XU CN202122061179U CN215772515U CN 215772515 U CN215772515 U CN 215772515U CN 202122061179 U CN202122061179 U CN 202122061179U CN 215772515 U CN215772515 U CN 215772515U
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Abstract
The utility model discloses an intelligent oil-filled sleeve type outdoor cable terminal which comprises an insulating sleeve sleeved outside a cable body, a conductor outgoing connecting plate connected with the upper end of the cable body and a sealing tail pipe connected with the lower end of the cable body, wherein the conductor outgoing connecting plate is connected with the upper end of the cable body; insulating liquid is filled in the insulating sleeve; the device also comprises a wireless transmitting and receiving device, a temperature sensor arranged on the conductor outgoing line connecting plate and a liquid level sensor arranged at the top of the sealing tail pipe; and a sealing part is arranged between the cable body and the sealing tail pipe, the cable terminal has a reasonable structure and good sealing performance, and can monitor the running state of the cable terminal.
Description
Technical Field
The utility model relates to the field of oil-filled sleeve type outdoor cable terminals, in particular to an intelligent oil-filled sleeve type outdoor cable terminal.
Background
With the high-speed development of electric power construction in China, the electric power demand is continuously rising, especially in the construction of high-voltage and ultrahigh-voltage power grids, the demand of crosslinked polyethylene insulated power cables with the voltage level of 66kV and above is increasing day by day, and the rapid development of cable accessories is promoted. Cable outdoor terminations are the primary cable accessories by which underground cables are securely connected to the high voltage transmission lines on the high voltage transmission towers. The existing outdoor cable terminal products are mainly a fully prefabricated dry-type flexible silicone rubber outdoor terminal and an oil-filled sleeve type terminal, and the oil-filled sleeve type terminal is widely used. The structure comprises a conductor outgoing line connecting plate, an insulating sleeve, insulating filling liquid, upper and lower sealing flanges, an outgoing line rod connected with a cable conductor, a tail pipe, a grounding device and the like.
The oil-filled bushing type outdoor terminal that comes into use at present is traditional type product mostly, satisfies basic physics and electrical properties requirement, and traditional type product is through the operation experience accumulation of multiaspect, has following problem:
firstly, the method comprises the following steps: the conductor outgoing line connecting plate is a key component for load transmission, poor contact is caused by oxidation produced on the surface of the conductor outgoing line connecting plate after long-term exposure to the sun and rain, the fastening bolt can also be loosened due to expansion caused by heat and contraction caused by cold due to environmental factors, and heat is generated in current transmission;
secondly, the method comprises the following steps: the liquid level of the internally filled insulating liquid is reduced due to heating evaporation factors in the long-term operation process of the cable terminal;
thirdly, the method comprises the following steps: the lower flange sealing element has the problems of material aging phenomenon and sealing performance reduction due to long-term use, so that internal insulating liquid leaks, the faulty operation of a cable terminal is caused, and the hidden trouble of line fault or breakdown occurs;
fourthly: line operation maintainers do not know the height of the internal insulating liquid level of the cable terminal in the daily inspection and maintenance process, whether timely supplement is needed or not, and the supplement amount cannot be determined.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provides an intelligent oil-filled sleeve type outdoor cable terminal which is reasonable in structure, good in sealing performance and capable of monitoring the running state of the oil-filled sleeve type outdoor cable terminal.
In order to realize the purpose of the utility model, the technical proposal of the utility model is as follows:
an intelligent oil-filled sleeve type outdoor cable terminal comprises an insulating sleeve sleeved outside a cable body, a conductor outgoing connecting plate connected with the upper end of the cable body and a sealing tail pipe connected with the lower end of the cable body; insulating liquid is filled in the insulating sleeve; the device also comprises a wireless transmitting and receiving device, a temperature sensor arranged on the conductor outgoing line connecting plate and a liquid level sensor arranged at the top of the sealing tail pipe; and the temperature sensor and the liquid level sensor are both connected with the wireless transmitting and receiving device.
Preferably, a sealing member is further provided between the cable body and the sealing tail tube.
Preferably, the temperature sensor is a passive wireless type, and a watchband type mounting structure is adopted to be tightly attached to the surface of the conductor outgoing line connecting plate.
Preferably, the level sensor is of a passive wireless type.
Preferably, the distance between the temperature sensor and the wireless transmitting and receiving device is not more than 3 meters.
Preferably, the distance between the liquid level sensor and the wireless transmitting and receiving device is not more than 3 meters.
Preferably, at least two temperature sensors are installed.
Preferably, at least two liquid level sensors are installed.
The utility model has the beneficial effects that:
firstly, the method comprises the following steps: the temperature of a conductor outgoing line connecting plate is monitored in real time by using a temperature sensor, the liquid level of insulating liquid in an insulating sleeve is monitored in real time by using a liquid level sensor, a monitoring signal is sent to a wireless transmitting and receiving device, the running state of an oil-filled sleeve type outdoor cable terminal is monitored in real time, and whether a liquid level and a current transmission key part in the cable terminal are in a safety interval or not is monitored in real time; once the liquid level is reduced or obviously abnormal and the temperature is ultrahigh, triggering an alarm to remind operation and maintenance personnel to take maintenance measures in time;
secondly, the method comprises the following steps: the method provides big data support for the construction and development of the intelligent power grid, and provides a basis for operation and maintenance personnel to make a periodic inspection maintenance plan;
thirdly, the method comprises the following steps: set up seal assembly, promote the leakproofness of oil charge bushing type outdoor cable terminal self, prevent that insulating liquid from revealing.
Drawings
FIG. 1 is a schematic view of the structure of the present invention.
Fig. 2 is a schematic structural view of the sealing member.
In the figure: 10 is a cable body, 11 is an insulating sleeve, 12 is a conductor outlet connecting plate, 13 is a sealing tail pipe, 14 is insulating liquid, 15 is a wireless transmitting and receiving device, 16 is a temperature sensor, 17 is a liquid level sensor, and 18 is a sealing component.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.
An intelligent oil-filled sleeve type outdoor cable terminal comprises an insulating sleeve 11 sleeved outside a cable body 10, a conductor outgoing line connecting plate 12 connected with the upper end of the cable body 10 and a sealing tail pipe 13 connected with the lower end of the cable body 10; the insulating sleeve 11 is filled with insulating liquid 14; the device also comprises a wireless transmitting and receiving device 15, a temperature sensor 16 arranged on the conductor outgoing line connecting plate 12 and a liquid level sensor 17 arranged at the top of the sealing tail pipe 13; the temperature sensor 16 and the liquid level sensor 17 are both connected with the wireless transmitting and receiving device 15
Preferably, a sealing member 18 is further provided between the cable body 10 and the sealing tail tube 13, and the wireless transceiver 15 is a conventional one and is directly commercially available.
Preferably, the temperature sensor 16 is a passive wireless type, and is attached to the surface of the conductor outgoing line connection plate 12 by a watchband type mounting structure.
Preferably, the liquid level sensor 17 is a passive wireless type, has a small volume, is easy to install, does not change the original structure in the cable terminal, and is preassembled on the top of the sealing tail pipe 13 before delivery.
Preferably, the distance between the temperature sensor 16 and the wireless transmitting and receiving device 15 is not more than 3 meters.
Preferably, the distance between the liquid level sensor 17 and the wireless transmitting and receiving device 15 is not more than 3 meters.
The energy in the working process of the temperature sensor 16 and the liquid level sensor 17 is kept to be permanently supplied by the energy electromagnetic wave transmitted by the wireless transmitting and receiving device 15.
Preferably, the temperature sensors 16 are installed in at least two, one for each.
Preferably, the liquid level sensors 17 are installed in at least two, one for each use.
If one sensor fails in the working process, the other sensor is switched to, so that the long-term stable operation of the system is ensured.
Monitoring principle:
the wireless transmitting and receiving device 15 is used as a device for transmitting wireless electromagnetic wave energy, receiving liquid level signals and temperature signals, energy is provided for normal work of the temperature sensor 16 and the liquid level sensor 17 in the form of electromagnetic waves in the working process, signals fed back from the temperature sensor 16 and the liquid level sensor 17 are received, the wireless transmitting and receiving device 15 is electrified to normally work and then transmits electromagnetic energy waves to the temperature sensor 16 and the liquid level sensor 17, the sensor chips are activated to work after the intensity of electromagnetic waves received by the temperature sensor 16 and the liquid level sensor 17 is enough, and the temperature and liquid level signals are transmitted to the wireless transmitting and receiving device 15 in a wireless form to form a closed loop; the wireless transmitting and receiving device 15 precisely calculates the feedback signals of the temperature sensor 16 and the liquid level sensor 17 and transmits the feedback signals to the field monitoring background through a standard protocol in the working process; the power supply of the wireless transmitting and receiving device 15 during operation can adopt various forms such as commercial power, on-site CT induction power taking, photovoltaic power taking, UPS uninterrupted power supply and the like; the monitoring background can set a safe temperature value and a safe level value of the insulating liquid in the cable terminal, and when a monitored signal is higher than a set value, an alarm is triggered, which is the prior art.
The described embodiments are only some embodiments of the utility model, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Claims (8)
1. An intelligent oil-filled sleeve type outdoor cable terminal comprises an insulating sleeve (11) sleeved outside a cable body (10), a conductor outgoing line connecting plate (12) connected with the upper end of the cable body (10) and a sealing tail pipe (13) connected with the lower end of the cable body (10); the insulating sleeve (11) is filled with insulating liquid (14); the method is characterized in that: the device also comprises a wireless transmitting and receiving device (15), a temperature sensor (16) arranged on the conductor outgoing line connecting plate (12) and a liquid level sensor (17) arranged at the top of the sealing tail pipe (13); the temperature sensor (16) and the liquid level sensor (17) are both connected with the wireless transmitting and receiving device (15).
2. The intelligent, oil-filled, sleeve-type outdoor cable termination of claim 1, wherein: and a sealing component (18) is also arranged between the cable body (10) and the sealing tail pipe (13).
3. The intelligent, oil-filled, sleeve-type outdoor cable termination of claim 1, wherein: the temperature sensor (16) is of a passive wireless type and is tightly attached to the surface of the conductor outgoing line connecting plate (12) by adopting a watchband type mounting structure.
4. The intelligent, oil-filled, sleeve-type outdoor cable termination of claim 1, wherein: the liquid level sensor (17) is of a passive wireless type.
5. The intelligent, oil-filled, sleeve-type outdoor cable termination of claim 1, wherein: the distance between the temperature sensor (16) and the wireless transmitting and receiving device (15) is not more than 3 meters.
6. The intelligent, oil-filled, sleeve-type outdoor cable termination of claim 1, wherein: the distance between the liquid level sensor (17) and the wireless transmitting and receiving device (15) is not more than 3 meters.
7. The intelligent, oil-filled, sleeve-type outdoor cable termination of claim 1, wherein: at least two temperature sensors (16) are installed.
8. The intelligent, oil-filled, sleeve-type outdoor cable termination of claim 1, wherein: the liquid level sensors (17) are at least two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122061179.XU CN215772515U (en) | 2021-08-30 | 2021-08-30 | Intelligent oil-filled sleeve type outdoor cable terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122061179.XU CN215772515U (en) | 2021-08-30 | 2021-08-30 | Intelligent oil-filled sleeve type outdoor cable terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215772515U true CN215772515U (en) | 2022-02-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122061179.XU Active CN215772515U (en) | 2021-08-30 | 2021-08-30 | Intelligent oil-filled sleeve type outdoor cable terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215772515U (en) |
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2021
- 2021-08-30 CN CN202122061179.XU patent/CN215772515U/en active Active
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