CN203746572U - Variable-frequency power cable - Google Patents
Variable-frequency power cable Download PDFInfo
- Publication number
- CN203746572U CN203746572U CN201420113760.9U CN201420113760U CN203746572U CN 203746572 U CN203746572 U CN 203746572U CN 201420113760 U CN201420113760 U CN 201420113760U CN 203746572 U CN203746572 U CN 203746572U
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- China
- Prior art keywords
- power cable
- core assembly
- frequency
- layer
- copper
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- Expired - Fee Related
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Abstract
The utility model discloses a variable-frequency power cable comprising a core assembly. The core assembly comprises three phase lines each of which is successively equipped with a conductor, a high-temperature-resistant silicone rubber insulating layer, and a copper-wire-woven shielding layer from inside to outside. The core assembly is successively wrapped with a high-temperature-resistant filling layer, a copper belt wrapping total shielding layer, and a sheath from inside to outside. Binding bar filling layers are filled in a gap between the core assembly and the high-temperature-resistant filling layer, and a gap among the phase lines. A plurality of bending-resistant strengthening bands are disposed in the binding bar filling layers. The high-temperature-resistant silicone rubber insulating layer and the copper-wire-woven shielding layer which are disposed on the outer side of the conductor are used as a first protective layer for resisting to high temperature and shielding electromagnetic interference. The high-temperature-resistant filling layer and the copper belt wrapping total shielding layer which are disposed on the outer side of the core assembly are used as a second protective layer for resisting to high temperature and shielding electromagnetic interference. Thus, double conductor protection is achieved and a good electromagnetic interference shielding capability and a good high-temperature-resistant capability are achieved. The bending-resistant strengthening bands further improve the bending-resistant capability of the power cable.
Description
Technical field
The utility model relates to a kind of cable, and more particularly, it relates to a kind of frequency-conversion power cable.
Background technology
Cable is conventionally by several or several groups of wires, at least two every group stranded similar cord-like, the mutually insulateds between every group of wire of forming, and often round Yi Gen center, be twisted into, whole outside is surrounded by the cover layer of high-insulation, for power delivery, for various device provides transmission of electricity path.
Frequency converter is to utilize the on-off action of power semiconductor device power frequency supply to be transformed to the electric energy control device of another frequency, industrial, there is a large amount of application, frequency converter produces very large interference and impact near electromagnetic field Cable for frequency changer when switching current frequency, cause signal disorder and short circuit, the work of frequency converter is produced and had a strong impact on.
At present, application number is that 20121010048.1 Chinese patent discloses a kind of Cable for frequency changer, it comprises external sheath layer, in external sheath layer, be provided with proof copper-wire braided screen, in proof copper-wire braided screen, be provided with lapping layer, in lapping layer, be provided with three phase lines, each phase line comprises copper conductor and crosslinked polyethylene phase line insulating layer, three phase lines are evenly equipped with a ground wire between any two, every ground wire comprises gnd conductor and crosslinked polyethylene ground line insulating layer, between phase line, ground wire and lapping layer, is provided with packed layer.This Cable for frequency changer, the integral outer only forming three phase lines is provided with screen, the ability of shield electromagnetic interference is general, and this cable does not have high temperature resistant and resistance to crooking ability poor, operational environment at hot environment and frequent bending cable, easily damage and cause conductor to expose, have potential safety hazard.
Utility model content
The deficiency existing for prior art, the purpose of this utility model is to provide a kind of frequency-conversion power cable, and shield electromagnetic interference ability, high temperature resistant and resistance to crooking ability are strong.
For achieving the above object, the utility model provides following technical scheme: a kind of frequency-conversion power cable, comprise core assembly, described core assembly comprises three phase lines, every phase line sets gradually from inside to outside as conductor, high-temperature-resisting silicon rubber insulating barrier and proof copper-wire braided screen, the outside of described core assembly is outwards provided with high temperature resistant packed layer successively, the wrapped total screen of copper strips and sheath, between described core assembly and high temperature resistant packed layer, between gap and phase line, gap is all filled with adhesive tape packed layer, in described adhesive tape packed layer, be provided with some resistance to crooked reinforcing bands.
By adopting technique scheme, at conductor, temperature-resistant insulation layer and proof copper-wire braided screen are all set outward, guarantee mutually insulated between every phase line, play the effect of the protective layer of the high temperature resistant and shield electromagnetic interference of ground floor simultaneously, the outside of online core assembly is also provided with high temperature resistant packed layer and the wrapped total screen of copper strips, play the effect of the protective layer of the high temperature resistant and shield electromagnetic interference of the second layer, conductor has been realized to double shielding, shield electromagnetic interference ability is strong, and there is good heat-resisting ability, there is stronger proof voltage impact, high pulse voltage in the time of can standing frequency conversion, reduce motor noise, assurance system normal operation, adhesive tape packed layer is filled high temperature resistant packed layer internal clearance, make frequency-conversion power cable full, work to fill rounding, the setting of resistance to crooked reinforcing band, further improve the resistance to bend(ing) energy of cable, do not affect the pliability of cable simultaneously, improve the intensity of frequency-conversion power cable.
The utility model is further set to: described high temperature resistant packed layer is made by high-temperature-resisting silicon rubber.
By adopting technique scheme, compare high-temperature-resisting silicon rubber insulating barrier, the insulating requirements of high temperature resistant packed layer is not high, adopts high-temperature-resisting silicon rubber material, reduces production costs, and guarantees resistance to elevated temperatures simultaneously.
The utility model is further set to: described adhesive tape packed layer is filled and formed by adhesive tape.
By adopting technique scheme, the adhesive tape of filling use only plays filling effect, and is placed in high temperature resistant packed layer, therefore only needs common adhesive tape, reduces production costs.
The utility model is further set to: described resistance to crooked reinforcing band is set to copper wire/fiber woven belt.
By adopting technique scheme, strengthen cable shield effect, reduce the cable interference of equipment to external world, increased the resistance to tension of cable simultaneously, do not affect the bending property of cable.
The utility model is further set to: described proof copper-wire braided screen is formed by tinned copper wire braiding.
By adopting technique scheme, tin is oxidized and forms tin ash diaphragm in air, and protection copper wire is not corroded, and has again certain intensity and hardness, and good moldability is easily welding again, improves proof copper-wire braided screen intensity and molding effect.
The utility model is further set to: described conductor is made by the flexible copper free wire of multiply.
By adopting technique scheme, improve resistance to bending and the electric conductivity of cable.
The utility model is further set to: described sheath is made by silicon rubber.
By adopting technique scheme, silicon rubber has the performances such as excellent thermal endurance, cold resistance, dielectricity, resistance to ozone and resistance to atmospheric aging, and long service life is eaten for a long time protection reliably for the internal structure of cable provides.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model frequency-conversion power cable embodiment.
Description of reference numerals: 1, core assembly; 11, phase line; 111, conductor; 112, high-temperature-resisting silicon rubber insulating barrier; 113, proof copper-wire braided screen; 2, high temperature resistant packed layer; 3, the wrapped total screen of copper strips; 4, sheath; 5, adhesive tape packed layer; 6, resistance to crooked reinforcing band.
Embodiment
With reference to Fig. 1, the utility model frequency-conversion power cable embodiment is described further.
A kind of frequency-conversion power cable, comprise core assembly 1, described core assembly 1 comprises three phase lines 11, every phase line 11 sets gradually from inside to outside as conductor 111, high-temperature-resisting silicon rubber insulating barrier 112 and proof copper-wire braided screen 113, the outside of described core assembly 1 is outwards provided with high temperature resistant packed layer 2, the wrapped total screen 3 of copper strips and sheath 4 successively, between described core assembly 1 and high temperature resistant packed layer 2, between gap and phase line 11, gap is all filled with adhesive tape packed layer 5, is provided with some resistance to crooked reinforcing bands 6 in described adhesive tape packed layer 5.
By adopting technique scheme, at outer temperature-resistant insulation layer and the proof copper-wire braided screen 113 of all arranging of conductor 111, guarantee mutually insulated between every phase line 11, play the effect of the protective layer of the high temperature resistant and shield electromagnetic interference of ground floor simultaneously, the outside of online core assembly 1 is also provided with high temperature resistant packed layer 2 and the wrapped total screen 3 of copper strips, play the effect of the protective layer of the high temperature resistant and shield electromagnetic interference of the second layer, conductor 111 has been realized to double shielding, shield electromagnetic interference ability is strong, and there is good heat-resisting ability, there is stronger proof voltage impact, high pulse voltage in the time of can standing frequency conversion, reduce motor noise, assurance system normal operation, adhesive tape packed layer 5 is filled high temperature resistant packed layer 2 internal clearances, make frequency-conversion power cable full, work to fill rounding, the setting of resistance to crooked reinforcing band 6, further improve the resistance to bend(ing) energy of cable, do not affect the pliability of cable simultaneously, improve the intensity of frequency-conversion power cable.
Described high temperature resistant packed layer 2 is made by high-temperature-resisting silicon rubber.
By adopting technique scheme, compare high-temperature-resisting silicon rubber insulating barrier 112, the insulating requirements of high temperature resistant packed layer 2 is not high, adopts high-temperature-resisting silicon rubber material, reduces production costs, and guarantees resistance to elevated temperatures simultaneously.
Described adhesive tape packed layer 5 is filled and is formed by adhesive tape.
By adopting technique scheme, the adhesive tape of filling use only plays filling effect, and is placed in high temperature resistant packed layer 2, therefore only needs common adhesive tape, reduces production costs.
Described resistance to crooked reinforcing band 6 is set to copper wire/fiber woven belt.
By adopting technique scheme, strengthen cable shield effect, reduce the cable interference of equipment to external world, increased the resistance to tension of cable simultaneously, do not affect the bending property of cable.
Described proof copper-wire braided screen 113 is formed by tinned copper wire braiding.
By adopting technique scheme, tin is oxidized and forms tin ash diaphragm in air, and protection copper wire is not corroded, and has again certain intensity and hardness, and good moldability is easily welding again, improves proof copper-wire braided screen 113 intensity and molding effect.
Described conductor 111 is made by the flexible copper free wire of multiply.
By adopting technique scheme, improve resistance to bending and the electric conductivity of cable.
Described sheath 4 is made by silicon rubber.
By adopting technique scheme, silicon rubber has the performances such as excellent thermal endurance, cold resistance, dielectricity, resistance to ozone and resistance to atmospheric aging, and long service life is eaten for a long time protection reliably for the internal structure of cable provides.
Claims (7)
1. a frequency-conversion power cable, comprise core assembly, it is characterized in that: described core assembly comprises three phase lines, every phase line sets gradually from inside to outside as conductor, high-temperature-resisting silicon rubber insulating barrier and proof copper-wire braided screen, the outside of described core assembly is outwards provided with high temperature resistant packed layer, the wrapped total screen of copper strips and sheath successively, between described core assembly and high temperature resistant packed layer, between gap and phase line, gap is all filled with adhesive tape packed layer, is provided with some resistance to crooked reinforcing bands in described adhesive tape packed layer.
2. frequency-conversion power cable according to claim 1, is characterized in that: described high temperature resistant packed layer is made by high-temperature-resisting silicon rubber.
3. frequency-conversion power cable according to claim 2, is characterized in that: described adhesive tape packed layer is filled and formed by adhesive tape.
4. frequency-conversion power cable according to claim 3, is characterized in that: described resistance to crooked reinforcing band is set to copper wire/fiber woven belt.
5. frequency-conversion power cable according to claim 4, is characterized in that: described proof copper-wire braided screen is formed by tinned copper wire braiding.
6. frequency-conversion power cable according to claim 5, is characterized in that: described conductor is made by the flexible copper free wire of multiply.
7. frequency-conversion power cable according to claim 6, is characterized in that: described sheath is made by silicon rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420113760.9U CN203746572U (en) | 2014-03-13 | 2014-03-13 | Variable-frequency power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420113760.9U CN203746572U (en) | 2014-03-13 | 2014-03-13 | Variable-frequency power cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203746572U true CN203746572U (en) | 2014-07-30 |
Family
ID=51346342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420113760.9U Expired - Fee Related CN203746572U (en) | 2014-03-13 | 2014-03-13 | Variable-frequency power cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203746572U (en) |
-
2014
- 2014-03-13 CN CN201420113760.9U patent/CN203746572U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20140730 Termination date: 20180313 |