CN206639602U - Field transformer is connected with overhead line uses power cable - Google Patents
Field transformer is connected with overhead line uses power cable Download PDFInfo
- Publication number
- CN206639602U CN206639602U CN201720304305.0U CN201720304305U CN206639602U CN 206639602 U CN206639602 U CN 206639602U CN 201720304305 U CN201720304305 U CN 201720304305U CN 206639602 U CN206639602 U CN 206639602U
- Authority
- CN
- China
- Prior art keywords
- insulated wire
- wire cores
- overhead line
- wrapped
- power cable
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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- Insulated Conductors (AREA)
Abstract
A kind of field transformer is connected with overhead line uses power cable, including the cable core formed by thoroughly doing away with edge core more, insulated wire cores are made up of aluminium conductor and the weather resistant cross-linking radiation black polyethylene insulating materials insulating barrier being wrapped in outside aluminium conductor, polypropylene filling rope is filled with cable core remaining space between each insulated wire cores, cable core is wrapped with the polypropylene tape that Duplication is not less than 15%, and polypropylene tape is wrapped with black pvc restrictive coating；The stranding lay ratio of more insulated wire cores is 25~30.Field transformer provided by the utility model is connected with overhead line uses power cable, can solve the problems, such as insulation occur season cracking, be chronically exposed under daylight will not season cracking, ensure that transmission line safety run.
Description
Technical field
Power cable field is the utility model is related to, especially a kind of field transformer is connected with overhead line with electric power electricity
Cable.
Background technology
At present, mountain area rural area is generally become using 10kV lines routing transformer is pressed onto outwards being transmitted electricity through overhead line for 380V, becomes
Depressor uses polyethylene-insulated power cable to overhead line connecting cable.Because insulating barrier need are exposed in the sun, by daylight
Prolonged irradiation, cause the degraded of molecule chain break to cause aging, substantially reduce its service life, the long-term peace to cable
Row for the national games leaves hidden danger.
The content of the invention
Technical problem to be solved in the utility model is to provide a kind of field transformer and is connected with overhead line with electric power electricity
Cable, can solve the problems, such as insulation occur season cracking, be chronically exposed under daylight will not season cracking, ensure that transmission line of electricity
Safe operation.
In order to solve the above technical problems, technical scheme is used by the utility model：A kind of field transformer is with making somebody a mere figurehead
Line connection power cable, including the cable core formed by thoroughly doing away with edge core more, insulated wire cores are by aluminium conductor and are wrapped in aluminium conductor
Outer weather resistant cross-linking radiation black polyethylene insulating barrier forms, filled with poly- in the cable core remaining space between each insulated wire cores
Propylene gasket for packing, cable core are wrapped with the polypropylene tape that Duplication is not less than 15%, and polypropylene tape is wrapped with black polychlorostyrene second
Alkene restrictive coating；
The stranding lay ratio of more insulated wire cores is 25~30.
The quantity of insulated wire cores is four.
The tightening factor of aluminium conductor is 0.9%.
The most minimal thickness of black pvc restrictive coating should be not less than the 85%-0.1mm of nominal value.
Field transformer provided by the utility model is connected with overhead line uses power cable, can solve insulation and aging occurs
The problem of cracking, be chronically exposed under daylight will not season cracking, ensure that transmission line safety run.
The utility model has an excellent performance, and testing result is as shown in table 1：
The testing result of the product electrical property of table 1
Provided by GB/T12527-2008, artificial weathering test test result is shown in Table 2.
The insulation artificial weathering aging performance test results of table 2
| Sequence number | Detection project | Unit | Standard requirement | Testing result |
| 1 | 0h~1008h | / | / | / |
| 1.1 | Tensile strength change | % | Maximum ± 30 | - 12 |
| 1.2 | Elongation at break rate of change | % | Maximum ± 30 | - 8 |
| 2 | 504h~1008h | / | / | / |
| 2.1 | Tensile strength change | % | Maximum ± 15 | - 8 |
| 2.2 | Elongation at break rate of change | % | Maximum ± 15 | - 6 |
After testing, cable electrical and mechanical performance meet GB/T 12706.1-2008 requirements, and insulation weathering aging meets
GB/T12527-2008 requirements.Using weatherability Insulation Material, in actual applications, insulation is exposed for a long time in the sun for cable,
Again without season cracking occurs, it ensure that transmission line safety is run.
Brief description of the drawings
The utility model is described in further detail with reference to the accompanying drawings and examples：
Fig. 1 is the utility model structure diagram.
Embodiment
In Fig. 1, a kind of field transformer is connected with overhead line uses power cable, including formed by thoroughly doing away with edge core more
Cable core, insulated wire cores are made up of aluminium conductor 1 and the weather resistant cross-linking radiation black polyethylene insulating barrier 2 being wrapped in outside aluminium conductor 1,
Polypropylene filling rope 3 is filled with cable core remaining space between each insulated wire cores, cable core is wrapped with Duplication and is not less than
15% polypropylene tape, polypropylene tape are wrapped with black pvc restrictive coating 4；
The stranding lay ratio of more insulated wire cores is 25~30.
The quantity of insulated wire cores is four.
The tightening factor of aluminium conductor 1 is 0.9%.
The most minimal thickness of black pvc restrictive coating 4 should be not less than the 85%-0.1mm of nominal value.
Manufacturing process of the present utility model is as follows：
1st, conductor
Conductor 1 is produced using 500 type frame winches, and during process, tension force is moderate, and external form shall be rounded up, and pitch should be uniform, twisted wire
Surface should be smooth, no jump creek, side wing, indenture, snakelike.Its performance meets the 2nd kind of circle as defined in GB/T3956-2008 and presses strand
Close aluminium conductor.
Conductor compacting uses glomerocryst mould, and after conductor compacting drawing, surface element is whole smooth, and tightening factor reaches 0.90%.
2nd, insulation extrusion
(weather resistant cross-linking radiation black polyethylene insulating materials (YJWF)) is extruded using the extruders of φ 90 outside conductor 1, absolutely
Edge thickness nominal value should meet GB/T 12706.1-2008 requirement, and average value should be not less than nominal value, and most minimal thickness should not be small
In the 90%-0.1mm of nominal value, insulation eccentricity degree is not more than 12.5%.
Focus on the purification of raw material, insulating materials extrudes compactness, controls uniform the one of insulation eccentricity degree and outer insulation diameter
Cause, improve the electric property of cable.
3rd, it is crosslinked
Cross-linking radiation is carried out to insulated wire cores using 3.0MeV electron accelerators, insulated wire cores Trace speed is maintained at 5m/
Min, after irradiated crosslinking of insulating, elongation is not more than 175% under load, and permanent elongation is not more than 15%.
4th, stranding
Using 1600/3+2 type cable-formers, core presses arranged clockwise, is sequentially red, yellow, green, blue, and stranding lay ratio is
25~30, stranding direction is dextrad.
Center and edge all should be tamped from polypropylene rope during cable cabling, and cable out-of-roundness is not more than 10%.
Cable core is tightened with polypropylene tape, and band is overlapping wrapped, and Duplication is not less than 15%.After stranding cable shall be rounded up, nothing
Deep-fried twisted dough sticks phenomenon.
5th, sheathing
Sheath extrudes black pvc sheath material using the extruders of φ 150, and its nominal value should meet GB/
T12706.1-2008 requirement, most minimal thickness should be not less than the 85%-0.1mm of nominal value.
Engine speed is adjusted, material can be extruded smoothly, sheath smooth in appearance, section pore-free.
Claims (4)
1. a kind of field transformer is connected with overhead line uses power cable, including the cable core formed by thoroughly doing away with edge core more, it is special
Sign is：Insulated wire cores are by aluminium conductor（1）Be wrapped in aluminium conductor（1）Outer weather resistant cross-linking radiation black polyethylene insulating barrier
（2）Form, polypropylene filling rope is filled with the cable core remaining space between each insulated wire cores（3）, cable core is wrapped with overlapping
Rate is not less than 15% polypropylene tape, and polypropylene tape is wrapped with black pvc restrictive coating（4）；
The stranding lay ratio of more insulated wire cores is 25~30.
2. field transformer according to claim 1 is connected with overhead line uses power cable, it is characterised in that：Insulated wire cores
Quantity be four.
3. field transformer according to claim 1 is connected with overhead line uses power cable, it is characterised in that：Aluminium conductor
（1）Tightening factor be 0.9%.
4. field transformer according to claim 1 is connected with overhead line uses power cable, it is characterised in that：Black polychlorostyrene
Ethene restrictive coating（4）Most minimal thickness should be not less than nominal value 85%-0.1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720304305.0U CN206639602U (en) | 2017-03-27 | 2017-03-27 | Field transformer is connected with overhead line uses power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720304305.0U CN206639602U (en) | 2017-03-27 | 2017-03-27 | Field transformer is connected with overhead line uses power cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206639602U true CN206639602U (en) | 2017-11-14 |
Family
ID=60259413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720304305.0U Expired - Fee Related CN206639602U (en) | 2017-03-27 | 2017-03-27 | Field transformer is connected with overhead line uses power cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206639602U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111968785A (en) * | 2020-08-21 | 2020-11-20 | 安徽凯诺电缆科技有限公司 | Halogen-free low-smoke flame-retardant power cable |
-
2017
- 2017-03-27 CN CN201720304305.0U patent/CN206639602U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111968785A (en) * | 2020-08-21 | 2020-11-20 | 安徽凯诺电缆科技有限公司 | Halogen-free low-smoke flame-retardant power cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171114 Termination date: 20210327 |