CN106876019A - Power cable - Google Patents
Power cable Download PDFInfo
- Publication number
- CN106876019A CN106876019A CN201710212809.4A CN201710212809A CN106876019A CN 106876019 A CN106876019 A CN 106876019A CN 201710212809 A CN201710212809 A CN 201710212809A CN 106876019 A CN106876019 A CN 106876019A
- Authority
- CN
- China
- Prior art keywords
- power cable
- phase
- phase line
- ground wire
- tape insulation
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
- H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
Landscapes
- Insulated Conductors (AREA)
Abstract
The invention discloses a kind of power cable, including：Oversheath；The shield sheath being placed in oversheath；The six roots of sensation tape insulation phase line being placed in shield sheath and a ground wire, six roots of sensation tape insulation phase line are evenly distributed on the periphery of ground wire, in the geometrically symmetric arrangement of three-phase, wherein each two with the tape insulation phase line of phase, and be arranged symmetrically in 180 degree relative to ground wire；It is filled in the insulation filler between shield sheath and tape insulation phase line.Power cable of the invention can reduce power cable electromagnetic interference, distributed capacitor and running temperature, extend power cable service life.Power cable of the invention is applied to frequency converter power cable.
Description
Technical field
The present invention relates to technical field of electric power, more particularly to power cable.
Background technology
The power cable for using at present is general to shield using phase three-wire three cable or three-phase and four-line cable or using band
Cover phase three-wire three plus three ground wire cables, shortcoming be all Electro Magnetic Compatibility (Electro Magnetic Compatibility,
EMC it is) poor.International monopoly WO 82/01785 " high-tension cable ", discloses a kind of shielded cable, is connect with three using three phase lines
Ground wire interlaced arrangement structure, electromagnetic interference reduction, but electromagnetic interference is not reduced thoroughly.Additionally, the electric power of prior art
Cable, also has the following disadvantages：Distributed capacitor is big, service life is short, running temperature is high.
The content of the invention
The embodiment of the present invention provides a kind of power cable, is used to reduce power cable electromagnetic interference, distributed capacitor and fortune
Trip temperature, extends power cable service life, and the power cable includes：
Oversheath 110；
The shield sheath 109 being placed in oversheath 110；
The six roots of sensation tape insulation phase line 101~106 being placed in shield sheath 109 and a ground wire 107, six roots of sensation tape insulation phase
Line 101~106 is evenly distributed on the periphery of ground wire 107, in the geometrically symmetric arrangement of three-phase, wherein with the tape insulation phase of phase
Each two of line, and be arranged symmetrically in 180 degree relative to ground wire 107；
It is filled in the insulation filler 108 between shield sheath 109 and tape insulation phase line.
In one embodiment, the area of section of every tape insulation phase line and ground wire 107 is equal, six roots of sensation tape insulation phase line
101~106 is tangent with the section of ground wire 107, and adjacent tape insulation phase line section is tangent.
In one embodiment, the color of three-phase tape insulation phase line is different.
In one embodiment, in three-phase tape insulation phase line, A facies tracts insulated phase wires are yellow, and B facies tracts insulated phase wires are green
Color, C facies tracts insulated phase wires are red.
In one embodiment, the ground wire 107 is bare conductor.
In one embodiment, the shield sheath 109 uses metal material, totally-enclosed to be wrapped in tape insulation phase line and ground connection
Outside line 107.
In one embodiment, the insulation filler 108 is also filled up between tape insulation phase line and ground wire 107.
In one embodiment, the insulation filler 108 uses crosslinked polyethylene and flame-retardant polypropylene vinyl material.
In one embodiment, the oversheath 110 uses flame-proof polyvinyl chloride material.
In one embodiment, the power cable is frequency converter power cable.
The power cable of the embodiment of the present invention includes：Oversheath；The shield sheath being placed in oversheath；It is placed in shield sheath
Interior six roots of sensation tape insulation phase line and a ground wire, six roots of sensation tape insulation phase line are evenly distributed on the periphery of ground wire, several in three-phase
What is arranged symmetrically structure, wherein each two with the tape insulation phase line of phase, and be arranged symmetrically in 180 degree relative to ground wire；Filling
Insulation filler between shield sheath and tape insulation phase line；So three-phase symmetrical is electrically in parallel, makes phase line current-carrying capacity
It is the 50% of traditional cable；Spatial balance symmetrical structure is formd, the phase line centre position of power cable six is reduced alternating magnetic field
Intensity and at any time, three-phase current and be zero and alternating magnetic field vector is zero greatly reduces power cable
Sense the inductance and electric capacity of generation, and reduce the electromagnetic interference produced mutually between power cable three-phase, and with it is traditional
The power cable of three-phase three-wire system reduces half compared to external radiation interference intensity；Reduce running temperature；Extend cable
Service life.
Further, the power cable of the embodiment of the present invention is applied to frequency converter power cable.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.In the accompanying drawings：
Fig. 1 is the structural representation of power cable in the embodiment of the present invention.
Specific embodiment
For the purpose, technical scheme and advantage for making the embodiment of the present invention become more apparent, below in conjunction with the accompanying drawings to this hair
Bright embodiment is described in further details.Here, schematic description and description of the invention is used to explain the present invention, but simultaneously
It is not as a limitation of the invention.
Fig. 1 is the structural representation of power cable in the embodiment of the present invention.As shown in figure 1, electric power in the embodiment of the present invention
Cable can include：
Oversheath 110；
The shield sheath 109 being placed in oversheath 110；
The six roots of sensation tape insulation phase line 101~106 being placed in shield sheath 109 and a ground wire 107, six roots of sensation tape insulation phase
Line 101~106 is evenly distributed on the periphery of ground wire 107, in the geometrically symmetric arrangement of three-phase, wherein with the tape insulation phase of phase
Each two of line, and be arranged symmetrically in 180 degree relative to ground wire 107；
It is filled in the insulation filler 108 between shield sheath 109 and tape insulation phase line.
Structure is it is known that the power cable of the embodiment of the present invention employs the cable architecture of three-phase seven as shown in Figure 1, and with three
Mutually geometrically symmetric arrangement forms parallel connection electrically, makes phase line current-carrying capacity be the 50% of traditional cable；Geographically,
6 lines of ground wire periphery, staggeredly inverted triangle location arrangements are in two three-phase power lines, i.e., identical isopen is arranged in 180 degree,
Spatial balance symmetrical structure is formd, the phase line centre position of power cable six is reduced alternating magnetic field intensity and at any time,
Three-phase current and be zero and alternating magnetic field vector is zero, greatly reduces the inductance and electricity of the sensing generation of power cable
Hold, and reduce the electromagnetic interference produced mutually between power cable three-phase, and the electric power electricity with traditional three-phase three-wire system
Cable reduces half compared to external radiation interference intensity；Reduce running temperature；Extend the service life of cable.
Structure is it is known that the power cable of the embodiment of the present invention employs 7 cores, double phase three-wire three physics as shown in Figure 1
Locus is shielded cable in inverted triangle arrangement, intermediate core.Six roots of sensation tape insulation phase line 101~106 is looped around ground wire 107 weeks
Enclose, conductor meets standard GB/T 3956 during implementation, structure can be pressed using standard.
In the particular embodiment, the area of section of every tape insulation phase line and ground wire 107 is equal, six roots of sensation tape insulation phase
Line 101~106 is tangent with the section of ground wire 107, and adjacent tape insulation phase line section is tangent.
In the particular embodiment, the color of three-phase tape insulation phase line is different.
In the particular embodiment, phase line is distinguished using color, for example：In three-phase tape insulation phase line, A phase tape insulation phases
Line is yellow, and B facies tracts insulated phase wires are green, and C facies tracts insulated phase wires are red.When cable is in wiring, for example in Fig. 1,
Can be by three phase mains phase line A connect bands insulated phase wires 101 and 104, B connect band insulated phase wires 102 and 105, C connection tape insulations
Phase line 103 and 106.
In the particular embodiment, the ground wire 107 is bare conductor.
In the particular embodiment, the shield sheath 109 uses metal material, it is totally-enclosed be wrapped in tape insulation phase line and
Outside ground wire 107, for example, can be formed outside institute's live wire by the totally-enclosed bag of well conducting metal material.
In the particular embodiment, the insulation filler 108 is also filled up between tape insulation phase line and ground wire 107.
In the particular embodiment, the insulation filler 108 can be using meeting physical and mechanical properties and the state such as fire-retardant
The material of family's standard, for example, can use the material such as crosslinked polyethylene and flame-retardant polypropylene ethene.Crosslinked polyethylene and fire-retardant herein
Polystyrene composite is only one, its every physical and mechanical properties and fire resistance index meet standard GB/T/
T12706-2008.Can also according to demand using other conjunction physical and mechanical properties and the national standard such as fire-retardant when implementing certainly
Material.
In the particular embodiment, the oversheath 110 can using meet physical and mechanical properties and it is fire-retardant wait country mark
Accurate material, for example can be using materials such as flame-proof polyvinyl chlorides.Flame-proof polyvinyl chloride material is only one herein, its every thing
Reason mechanical performance and fire resistance index meet standard GB/T/T12706-2008.Can also be adopted according to demand when implementing certainly
The material of physical and mechanical properties and the national standard such as fire-retardant is closed with other.
In the particular embodiment, the power cable is frequency converter power cable, can be applicable frequency converter as power supply
The power cable of output.
In sum, the power cable of the embodiment of the present invention includes：Oversheath；The shield sheath being placed in oversheath；Put
In the six roots of sensation tape insulation phase line in shield sheath and a ground wire, six roots of sensation tape insulation phase line is evenly distributed on the outer of ground wire
Enclose, in the geometrically symmetric arrangement of three-phase, wherein each two with the tape insulation phase line of phase, and be in 180 degree pair relative to ground wire
Claim arrangement；It is filled in the insulation filler between shield sheath and tape insulation phase line；So three-phase symmetrical is electrically in parallel, is made
Phase line current-carrying capacity is the 50% of traditional cable；Spatial balance symmetrical structure is formd, the phase line centre position of power cable six is dropped
Low alternating magnetic field intensity and at any time, three-phase current and be zero and alternating magnetic field vector is zero is greatly reduced
The inductance and electric capacity of the sensing generation of power cable, and the electromagnetic interference produced mutually between power cable three-phase is reduced, with
And external radiation interference intensity reduces half compared with the power cable of traditional three-phase three-wire system；Reduce running temperature；Prolong
The service life of cable is grown.
Further, the power cable of the embodiment of the present invention is applied to frequency converter power cable, can be in frequency convertor system
Middle cable distributed capacitance and cable the alternating electromagnetism reduction for providing three-phase alternating current electrical transmission, ground connection reliability and shielding are good
Frequency converter power cable.
The power cable of the embodiment of the present invention can bring economic benefit, beneficial to marketing.
Particular embodiments described above, has been carried out further in detail to the purpose of the present invention, technical scheme and beneficial effect
Describe in detail bright, should be understood that and the foregoing is only specific embodiment of the invention, the guarantor being not intended to limit the present invention
Shield scope, all any modification, equivalent substitution and improvements within the spirit and principles in the present invention, done etc., should be included in this
Within the protection domain of invention.
Claims (10)
1. a kind of power cable, it is characterised in that including：
Oversheath (110)；
The shield sheath (109) being placed in oversheath (110)；
Six roots of sensation tape insulation phase line (101~106) being placed in shield sheath (109) and a ground wire (107), six roots of sensation tape insulation
Phase line (101~106) is evenly distributed on the periphery of ground wire (107), in the geometrically symmetric arrangement of three-phase, wherein with the band of phase
Each two of insulated phase wires, and be arranged symmetrically in 180 degree relative to ground wire (107)；
It is filled in the insulation filler (108) between shield sheath (109) and tape insulation phase line.
2. power cable as claimed in claim 1, it is characterised in that the section of every tape insulation phase line and ground wire (107)
Area equation, six roots of sensation tape insulation phase line (101~106) tape insulation phase line section tangent with ground wire (107) section, adjacent
It is tangent.
3. power cable as claimed in claim 1, it is characterised in that the color of three-phase tape insulation phase line is different.
4. power cable as claimed in claim 3, it is characterised in that in three-phase tape insulation phase line, A facies tracts insulated phase wires are Huang
Color, B facies tracts insulated phase wires are green, and C facies tracts insulated phase wires are red.
5. power cable as claimed in claim 1, it is characterised in that the ground wire (107) is bare conductor.
6. power cable as claimed in claim 1, it is characterised in that the shield sheath (109) uses metal material, full envelope
Closure is rolled in outside tape insulation phase line and ground wire (107).
7. power cable as claimed in claim 1, it is characterised in that the insulation filler (108) is also filled up in tape insulation
Between phase line and ground wire (107).
8. power cable as claimed in claim 1, it is characterised in that the insulation filler (108) uses crosslinked polyethylene
With flame-retardant polypropylene vinyl material.
9. power cable as claimed in claim 1, it is characterised in that the oversheath (110) uses flame-proof polyvinyl chloride material
Material.
10. the power cable as described in any one of claim 1 to 9, it is characterised in that the power cable is frequency converter electric power
Cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710212809.4A CN106876019A (en) | 2017-04-01 | 2017-04-01 | Power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710212809.4A CN106876019A (en) | 2017-04-01 | 2017-04-01 | Power cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106876019A true CN106876019A (en) | 2017-06-20 |
Family
ID=59160767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710212809.4A Pending CN106876019A (en) | 2017-04-01 | 2017-04-01 | Power cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106876019A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2473722Y (en) * | 2001-04-20 | 2002-01-23 | 上海摩恩电气有限公司 | Frequency converter cable |
| FR2848718A1 (en) * | 2002-12-11 | 2004-06-18 | France Telecom | Electrical network e.g. computer broadband network, cable for private installation, has three wires for phase, neutral and ground respectively, and are bunched together to form bunched conductor to transmit low tension current |
| CN204423959U (en) * | 2015-03-19 | 2015-06-24 | 启悦线缆制品（深圳）有限公司 | A kind of medium voltage converter cable |
| CN204614507U (en) * | 2015-05-05 | 2015-09-02 | 南洋电缆（天津）有限公司 | A kind of high-power frequency conversion optical fibre composite electric power transmission cable |
| CN106448861A (en) * | 2016-10-08 | 2017-02-22 | 远东电缆有限公司 | Ultralow magnetic field cable |
| CN206564143U (en) * | 2017-04-01 | 2017-10-17 | 中冶京诚工程技术有限公司 | Power cable |
-
2017
- 2017-04-01 CN CN201710212809.4A patent/CN106876019A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2473722Y (en) * | 2001-04-20 | 2002-01-23 | 上海摩恩电气有限公司 | Frequency converter cable |
| FR2848718A1 (en) * | 2002-12-11 | 2004-06-18 | France Telecom | Electrical network e.g. computer broadband network, cable for private installation, has three wires for phase, neutral and ground respectively, and are bunched together to form bunched conductor to transmit low tension current |
| CN204423959U (en) * | 2015-03-19 | 2015-06-24 | 启悦线缆制品（深圳）有限公司 | A kind of medium voltage converter cable |
| CN204614507U (en) * | 2015-05-05 | 2015-09-02 | 南洋电缆（天津）有限公司 | A kind of high-power frequency conversion optical fibre composite electric power transmission cable |
| CN106448861A (en) * | 2016-10-08 | 2017-02-22 | 远东电缆有限公司 | Ultralow magnetic field cable |
| CN206564143U (en) * | 2017-04-01 | 2017-10-17 | 中冶京诚工程技术有限公司 | Power cable |
Non-Patent Citations (2)
| Title |
|---|
| 王卫东: "《电缆工艺技术原理及应用》", 30 September 2011, 机械工业出版社 * |
| 高元德: "《焊工常识（上部）》", 31 October 2007, 海天出版社 * |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170620 |
|
| RJ01 | Rejection of invention patent application after publication |