CN202694844U - Waterproof frequency-conversion cable - Google Patents
Waterproof frequency-conversion cable Download PDFInfo
- Publication number
- CN202694844U CN202694844U CN 201220350021 CN201220350021U CN202694844U CN 202694844 U CN202694844 U CN 202694844U CN 201220350021 CN201220350021 CN 201220350021 CN 201220350021 U CN201220350021 U CN 201220350021U CN 202694844 U CN202694844 U CN 202694844U
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- Prior art keywords
- frequency
- layer
- cable
- shielding
- conversion
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- Expired - Fee Related
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Abstract
The utility model discloses a waterproof frequency-conversion cable. Each conductor adopts a soft copper wire; an insulated wire core is formed by extruding cross-linked polyethylene on each conductor; the insulated wire cores are three main line insulated wires and three null line insulated wires; the insulated wire cores are stranded together; a filling layer is filled in a core clearance; a wrapping layer, a shielding layer and a jacket layer are sequentially arranged outside the filling layer; the jacket layer is made of a high-density polyethylene material; and in the shielding layer, a copper tape of which the thickness is 0.5 mm is adopted for shielding, longitudinally wrapped and embossed. The waterproof frequency-conversion cable has the advantages that in the shielding layer, the copper tape of which the thickness is 0.5 mm is adopted for the shielding, longitudinally wrapped and embossed, so a shielding effect of the cable is improved, and interference of the frequency-conversion cable on external equipment is reduced. The waterproof frequency-conversion cable is high in voltage impact resistance, can withstand pulse voltage during high-speed frequent frequency conversion, and well protects a frequency-conversion electrical appliance.
Description
Technical field
The utility model relates to cable industry, is specifically related to a kind of waterproof frequency-changing cable.
Background technology
Recent two decades comes frequency control motor that very large development is arranged at home and abroad, and annual growth slightly surpasses 10%, and the DC Transmission annual growth is 3-4%.Variable-frequency motor has advantages of more, and few such as the equipment investment expense, simple in structure, volume is little, and cost is low, and is energy-conservation, and speed adjustable range is large, has the characteristic of permanent power, permanent rotating speed, and is 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 subjected to the advantage such as drop restriction, is widely used in electric power system.But XLPE cable is being laid and run duration, when mechanical stress or external force cause cable cover(ing) and insulation harm or joint to damage, moisture or moisture can be along cable vertically and the radial clearance immersion, and the probability that causes the XLPE power cable insulation to generate water tree under working voltage rises rapidly.Water tree grows into certain-length namely can cause at the water tree tip permanent electric branch defective, and causes cable insulation to puncture in the short period, causes power outage.
The utility model content
The utility model provides a kind of waterproof frequency-changing cable of simple in structure, good water-proof effect.
Scheme of the present utility model is as follows: a kind of waterproof frequency-changing cable, conductor adopts annealed copper wire, extrude friendship sign polyethylene at described conductor and consist of insulated wire cores, described insulated wire cores is three main line insulated wires, three zero line insulated wires, described insulated wire cores twists together to fill between the cable core space simultaneously and consists of packed layer, described packed layer outside is provided with belting layer, screen, restrictive coating successively, and described restrictive coating material adopts high-density polyethylene material.
Described screen adopts the thick copper strip shielding of 0.5mm, and indulges bag embossing.
The beneficial effects of the utility model:
1, the utility model cable shield adopts the thick copper strip shielding of 0.5mm; and indulge bag embossing; to strengthen the cable shield effect; reduce the to external world interference of equipment of frequency-changing cable; has stronger proof voltage impact; pulse voltage in the time of standing at a high speed frequent frequency conversion plays a good protection to frequency conversion electrical equipment.
2, the utility model sheath adopts the high density polyethylene (HDPE) sheath, has good resistance to low temperature (minimum serviceability temperature can reach-70～-100 ℃), chemical stability is good, the erosion of the most of soda acids of ability (not anti-acid with oxidizing property), be insoluble to common solvent under the normal temperature, water absorption is little, and water resistance is good.
Description of 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 waterproof frequency-changing cable, conductor 1 adopts annealed copper wire, extrude friendship sign polyethylene layer 2 at described conductor 1 and consist of insulated wire cores, described insulated wire cores is three main line insulated wires, three zero line insulated wires, described insulated wire cores twists together to fill between the cable core space simultaneously and consists of packed layer 3, described cable core outside is provided with belting layer 4, screen 5, restrictive coating 6 successively, and described restrictive coating 6 materials adopt high-density polyethylene material.
Described screen 5 adopts the thick copper strip shielding of 0.5mm, and indulges bag embossing.
The utlity model has stronger proof voltage impact, the pulse voltage in the time of standing at a high speed frequent frequency conversion plays a good protection to frequency conversion electrical equipment.Also has simultaneously good resistance to low temperature (minimum serviceability temperature can reach-70～-100 ℃), chemical stability is good, and the erosion of the most of soda acids of ability (not anti-acid with oxidizing property) is insoluble to common solvent under the 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 modification; when its function that produces does not exceed spiritual that specification and accompanying drawing contain yet, all should be within protection range of the present utility model.
Claims (2)
1. waterproof frequency-changing cable, it is characterized in that conductor adopts annealed copper wire, extrude friendship sign polyethylene layer at described conductor and consist of insulated wire cores, described insulated wire cores is three main line insulated wires, three zero line insulated wires, described insulated wire cores twists together to fill between the cable core space simultaneously and consists of packed layer, described packed layer outside is provided with belting layer, screen, restrictive coating successively, and described restrictive coating material adopts high-density polyethylene material.
2. a kind of waterproof frequency-changing cable according to claim 1 is characterized in that described screen adopts the thick copper strip shielding of 0.5mm, and indulges bag embossing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220350021 CN202694844U (en) | 2012-07-19 | 2012-07-19 | Waterproof frequency-conversion cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220350021 CN202694844U (en) | 2012-07-19 | 2012-07-19 | Waterproof frequency-conversion cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202694844U true CN202694844U (en) | 2013-01-23 |
Family
ID=47550426
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220350021 Expired - Fee Related CN202694844U (en) | 2012-07-19 | 2012-07-19 | Waterproof frequency-conversion cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202694844U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107240460A (en) * | 2017-07-19 | 2017-10-10 | 无锡市曙光电缆有限公司 | A kind of crosslinked polyetylene insulated frequency-conversion power cable of antifreeze anti-interference type |
-
2012
- 2012-07-19 CN CN 201220350021 patent/CN202694844U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107240460A (en) * | 2017-07-19 | 2017-10-10 | 无锡市曙光电缆有限公司 | A kind of crosslinked polyetylene insulated frequency-conversion power cable of antifreeze anti-interference type |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130123 Termination date: 20130719 |