CN203746567U - Variable frequency cable - Google Patents
Variable frequency cable Download PDFInfo
- Publication number
- CN203746567U CN203746567U CN201420092901.3U CN201420092901U CN203746567U CN 203746567 U CN203746567 U CN 203746567U CN 201420092901 U CN201420092901 U CN 201420092901U CN 203746567 U CN203746567 U CN 203746567U
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- China
- Prior art keywords
- line insulated
- layer
- cores
- insulated wire
- main line
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- Expired - Fee Related
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Abstract
The utility model discloses a variable frequency cable, which comprises main line insulated lines, zero line insulated lines and an outer sheath layer. The variable frequency cable is characterized in that the number of main line insulated cores is six, and three cores are wrapped with a polyurethane wrapping layer to form each main line insulated core; the number of zero line insulated lines is six, the zero line insulated lines are distributed between adjacent main line insulated cores and in the middle, and two cores are wrapped with a polyurethane wrapping layer to form each zero line insulated core; a tinned copper conductor is wrapped with a crosslinked polyethylene insulated layer to form the core; the main line insulated lines and the zero line insulated lines are combined and sequentially wrapped with a wrapping layer, a metal shielding layer and a sheath layer, and the sheath layer adopts high-density polyethylene material; and a drain line is arranged in the metal shielding layer. The shielding layer of the utility model adopts a copper tape with a thickness of 0.5mm for shielding, longitudinal wrapping and corrugating are carried out, the shielding effects of the cable are enhanced, interference of the variable frequency cable on external equipment is reduced, strong voltage surge-resisting performance is provided, pulse voltage in the case of high-speed frequent frequency change can be endured, and variable-frequency electric appliances can be well protected.
Description
technical field
The utility model relates to cable industry, is specifically related to a kind of frequency-changing cable.
background technology
Recent two decades carrys out frequency control motor very large development at home and abroad, and annual growth slightly exceedes 10%, and DC Transmission annual growth is 3-4%.Variable-frequency motor has advantages of more, as few in equipment investment expense, and simple in structure, volume is little, and cost is low, energy-conservation, and speed adjustable range is large, has the characteristic of permanent power, permanent rotating speed, easy to use, and capacity is large etc.Therefore currently use widely in industrial aspect such as metallurgy, mine, railways, equally also widely apply at household electrical appliance recently.
Crosslinked polyethylene (XLPE) insulated power cable, because of its good electric, mechanical and physical performance, and production technology is simple, structure is light, transmission capacity is large, mounting and installation and maintaining convenient, be not subject to the advantages such as drop restriction, in electric power system, is widely used.But XLPE cable is being laid and run duration, in the time that mechanical stress or external force cause cable cover(ing) and insulation harm or joint to damage, moisture or moisture can be along cable longitudinally and radial clearance immersion, and the probability that causes XLPE power cable insulation to generate water tree under working voltage rises rapidly.Water tree grows into certain length can cause at water tree tip permanent electric branch defect, and causes cable insulation to puncture in the short period, causes power outage.
utility model content
The utility model provides a kind of frequency-changing cable of simple in structure, good water-proof effect.
Scheme of the present utility model is as follows: a kind of frequency-changing cable, comprise main line insulated wire, zero line insulated wire and external sheath layer, and described main line insulated wire cores is the six roots of sensation, is made up of the outer wrapped polyurethane belting layer of three cores; Described zero line insulated wire cores is the six roots of sensation, is distributed in adjacent of main line insulated wire cores and centre, and described zero line insulated wire cores is made up of the outer wrapped polyurethane belting layer of two cores; Described core is made up of the outer wrapped friendship sign polyethylene layer of tinned copper conductor; Wrapped belting layer, metal screen layer, restrictive coating successively after the combination of main line insulated wire and zero line insulated wire, described restrictive coating material adopts high-density polyethylene material; A drainage thread is set in described metal screen layer.
Further, described conductor is by stranded the forming of 5-50 thigh tinned copper wire.
Further, described metal screen layer adopts the thick copper strip shielding of 0.5mm, and indulges bag embossing.
The utility model cable shield adopts the thick copper strip shielding of 0.5mm; and indulge bag embossing; to strengthen cable shield effect; reduce the frequency-changing cable interference of equipment to external world; there is stronger proof voltage impact; pulse voltage can stand at a high speed frequent frequency conversion time, plays a good protection to frequency conversion electrical equipment.Sheath adopts high density polyethylene (HDPE) sheath, there is good resistance to low temperature (minimum serviceability temperature can reach-70～-100 DEG C), chemical stability is good, the erosion (the not resistance to acid with oxidizing property) of the most of soda acids of ability, under normal temperature, be insoluble to common solvent, water absorption is little, and water resistance is good.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further.
A kind of frequency-changing cable, comprises main line insulated wire, zero line insulated wire and external sheath layer, and described main line insulated wire cores is the six roots of sensation, is made up of the outer wrapped polyurethane belting layer 3 of three cores; Described zero line insulated wire cores 4 is the six roots of sensation, is distributed in adjacent of main line insulated wire cores and centre, and described zero line insulated wire cores 4 is made up of the outer wrapped polyurethane belting layer of two cores; Described core is made up of the outer wrapped friendship sign polyethylene layer 2 of tinned copper conductor 1; 7 layers of wrapped belting layers 5, metal screen layer 6, sheath successively after 4 combinations of main line insulated wire and zero line insulated wire, described restrictive coating material adopts high-density polyethylene material; A drainage thread 8 is set in described metal screen layer 6.
Described conductor 1 is by stranded the forming of 5-50 thigh tinned copper wire.Described metal screen layer 6 adopts the copper strip shielding that 0.5mm is thick, and indulges bag embossing.
The utlity model has stronger proof voltage impact, the pulse voltage can stand at a high speed frequent frequency conversion time, plays a good protection to frequency conversion electrical equipment.Also there is good resistance to low temperature (minimum serviceability temperature can reach-70～-100 DEG C) simultaneously, chemical stability is good, and the erosion (the not resistance to acid with oxidizing property) of the most of soda acids of ability, is insoluble to common solvent under normal temperature, water absorption is little, and water resistance is good.
Although above embodiment of the present utility model has been given to describe in detail and explanation; but what should indicate is; we can carry out various equivalences to above-mentioned execution mode according to conception of the present utility model and change and amendment; when its function producing does not exceed spiritual that specification and accompanying drawing contain yet, all should be within protection range of the present utility model.
Claims (3)
1. a frequency-changing cable, comprises main line insulated wire, zero line insulated wire and external sheath layer, it is characterized in that described main line insulated wire cores is the six roots of sensation, is made up of the outer wrapped polyurethane belting layer of three cores; Described zero line insulated wire cores is the six roots of sensation, is distributed in adjacent of main line insulated wire cores and centre, and described zero line insulated wire cores is made up of the outer wrapped polyurethane belting layer of two cores; Described core is made up of the outer wrapped friendship sign polyethylene layer of tinned copper conductor; Wrapped belting layer, metal screen layer, restrictive coating successively after the combination of main line insulated wire and zero line insulated wire, described restrictive coating material adopts high-density polyethylene material; A drainage thread is set in described metal screen layer.
2. a kind of waterproof frequency-changing cable according to claim 1, is characterized in that described conductor is by stranded the forming of 5-50 thigh tinned copper wire.
3. a kind of waterproof frequency-changing cable according to claim 1, is characterized in that described metal screen layer adopts the thick copper strip shielding of 0.5mm, and indulges bag embossing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420092901.3U CN203746567U (en) | 2014-03-03 | 2014-03-03 | Variable frequency cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420092901.3U CN203746567U (en) | 2014-03-03 | 2014-03-03 | Variable frequency cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203746567U true CN203746567U (en) | 2014-07-30 |
Family
ID=51346337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420092901.3U Expired - Fee Related CN203746567U (en) | 2014-03-03 | 2014-03-03 | Variable frequency cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203746567U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103943262A (en) * | 2014-03-03 | 2014-07-23 | 安徽凯博尔特种电缆集团有限公司 | Variable frequency cable |
-
2014
- 2014-03-03 CN CN201420092901.3U patent/CN203746567U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103943262A (en) * | 2014-03-03 | 2014-07-23 | 安徽凯博尔特种电缆集团有限公司 | Variable frequency cable |
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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 |
Granted publication date: 20140730 Termination date: 20150303 |
|
| EXPY | Termination of patent right or utility model |