CN103177811A - Variable-frequency power cable - Google Patents
Variable-frequency power cable Download PDFInfo
- Publication number
- CN103177811A CN103177811A CN2013100887985A CN201310088798A CN103177811A CN 103177811 A CN103177811 A CN 103177811A CN 2013100887985 A CN2013100887985 A CN 2013100887985A CN 201310088798 A CN201310088798 A CN 201310088798A CN 103177811 A CN103177811 A CN 103177811A
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- Prior art keywords
- layer
- cable
- core
- cable core
- frequency
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- 239000004020 conductor Substances 0.000 claims abstract description 8
- 238000006243 chemical reaction Methods 0.000 claims description 12
- 230000004888 barrier function Effects 0.000 claims description 9
- 238000012856 packing Methods 0.000 claims description 7
- 238000009413 insulation Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 2
- 239000004745 nonwoven fabric Substances 0.000 abstract 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 239000005030 aluminium foil Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
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Abstract
The invention discloses a variable-frequency power cable comprising a middle cable core, a shield layer and a non-woven fabrics layer, wherein the shield layer and the non-woven fabrics layer are sequentially coated outside the cable core; an outer protection layer is extruded on the outermost layer; a filling strip is filled in a gap of the cable core; the cable core is formed by mutually stranding three cores in triangular symmetrical distribution; each core consists of a middle conductor, an insulating layer and an insulating shield layer; the insulating layer is extruded outside the conductor; and the insulating shield layer is wrapped outside the insulating layer. The variable-frequency power cable provided by the invention is stable and compact in structure, so that the cable has stronger voltage-resistant impact, can bear pulse voltage in a high-speed frequent frequency variation process, and can be used for protecting variable-frequency electric devices well.
Description
Technical field
The present invention relates to the power cable field, specifically a kind of frequency-conversion power cable.
Background technology
In recent years, the demand of frequency control motor is increasing, and to have the equipment investment expense few, simple in structure because of variable-frequency motor, volume is little, cost is low, and is energy-conservation, and speed adjustable range is large, characteristic with permanent power, permanent rotating speed, easy to use, therefore more advantage that capacity is large etc. is used widely in industrial aspect such as metallurgy, mine, railways.Household electrical appliance have also been widely applied frequency control motor in addition, and this just makes supporting with it frequency-conversion power cable in great demand.Yet traditional frequency-conversion power cable can't adapt to the demand of frequency control motor gradually on performance, particularly the proof voltage impact property is lower, and quality is also in urgent need to be improved.
Summary of the invention
The technical problem that cable of the present invention solves is to provide a kind of stronger proof voltage impact that has, and can stand the frequency-conversion power cable of the impact of at a high speed frequent variable-frequency pulse voltage.
A kind of frequency-conversion power cable of the present invention, cable core in the middle of comprising, and be coated on successively the outer screen of cable core, nonwoven layer, outermost layer extrudes outer jacket, and described cable core is by symmetrical mutual stranded formation of three cores of triangularity, and every core is all by the conductor of centre, be extruded in the outer insulating barrier of conductor, and wrapped insulation screen composition outside insulating barrier.
Further improve, be filled with packing in the space between described cable core and screen.
Further improve, dragged the core drainage thread between described insulating barrier and insulation screen, dragged a cable core drainage thread in packing.
It is individually shielded and drag the core drainage thread that the present invention thoroughly does away with edge core with each; then always shield after stranding; while towing cable core drainage thread; Stability Analysis of Structures, compactness; make cable have stronger proof voltage impact; pulse voltage in the time of standing at a high speed frequent frequency conversion can play a good protection to frequency conversion electrical equipment.
Description of drawings
Fig. 1 is structural representation of the present invention.
Embodiment
As shown in Figure 1, it is an example of this Novel variable-frequency power cable cable, cable core in the middle of cable, by three stranded forming of core, every core is by the conductor 1 of centre, be extruded in the outer insulating barrier 2 of conductor, and wrapped insulation screen 3 compositions outside insulating barrier, core drainage thread 4 dragged between insulating barrier and insulation screen; Be filled with packing 6 in the space of cable core and screen 7, dragged a cable core drainage thread 5 in packing 6.Cable core is wound around screen 7 outward, follows wrapped lapping layer 8, extrudes at last restrictive coating 9.
The present invention's insulating material used is crosslinked polyetylene insulated, and packing is common non-absorbent material, and screen is that aluminium foil is wrapped or be wound around the copper strip shielding layer.Restrictive coating is the Flame-retardant Hdpe sheath, and its oxygen index is greater than 35%.
The invention provides a kind of thinking and implementation method of frequency-conversion power cable cable, above-described is only the preferred embodiment of the present invention.This is external does not break away under the prerequisite of inventive principle, can also make some improvement, and these improve the protection range that also should be considered as inventing.
Claims (3)
1. frequency-conversion power cable, it is characterized in that: the cable core in the middle of comprising, and be coated on successively the outer screen (7) of cable core, nonwoven layer (8), outermost layer extrudes outer jacket (9), and described cable core is by symmetrical mutual stranded formation of three cores of triangularity, and every core is all by the conductor (1) of centre, be extruded in the outer insulating barrier (2) of conductor, and wrapped insulation screen (3) composition outside insulating barrier.
2. frequency-conversion power cable according to claim 1, is characterized in that: be filled with packing (6) in the space between described cable core and screen (7).
3. frequency-conversion power cable according to claim 1 and 2, is characterized in that: dragged core drainage thread (4) between described insulating barrier (2) and insulation screen (3), dragged a cable core drainage thread (5) in packing (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100887985A CN103177811A (en) | 2013-03-20 | 2013-03-20 | Variable-frequency power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100887985A CN103177811A (en) | 2013-03-20 | 2013-03-20 | Variable-frequency power cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103177811A true CN103177811A (en) | 2013-06-26 |
Family
ID=48637603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100887985A Pending CN103177811A (en) | 2013-03-20 | 2013-03-20 | Variable-frequency power cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103177811A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103871594A (en) * | 2014-02-26 | 2014-06-18 | 安徽江淮电缆集团有限公司 | Polyethylene insulation impact-resistant abrasion-resistant corrosion-resistant cable |
| CN104851500A (en) * | 2014-02-14 | 2015-08-19 | 安徽新华电缆(集团)有限公司 | High-temperature-resistant cable for petrochemical engineering |
| CN104851482A (en) * | 2014-02-14 | 2015-08-19 | 安徽新华电缆(集团)有限公司 | High-temperature-resistant waterproof drainage cable |
| CN105869749A (en) * | 2016-05-18 | 2016-08-17 | 安徽华能电缆集团有限公司 | High-temperature-resistant aviation cable |
| US10978223B1 (en) | 2019-09-26 | 2021-04-13 | Rolls-Royce Corporation | Ground termination system for a variable frequency drive harness |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070107921A1 (en) * | 2005-11-16 | 2007-05-17 | Service Wire Company | Adjustable Speed Drive Cable and Shield Termination |
| CN202363148U (en) * | 2011-11-30 | 2012-08-01 | 江苏远洋东泽电缆股份有限公司 | Zinc-coated steel wire woven armored portable double-shielding instrument cable for ships |
| CN202584903U (en) * | 2012-05-16 | 2012-12-05 | 九星控股集团有限公司 | High-voltage variable-frequency power cable |
-
2013
- 2013-03-20 CN CN2013100887985A patent/CN103177811A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070107921A1 (en) * | 2005-11-16 | 2007-05-17 | Service Wire Company | Adjustable Speed Drive Cable and Shield Termination |
| CN202363148U (en) * | 2011-11-30 | 2012-08-01 | 江苏远洋东泽电缆股份有限公司 | Zinc-coated steel wire woven armored portable double-shielding instrument cable for ships |
| CN202584903U (en) * | 2012-05-16 | 2012-12-05 | 九星控股集团有限公司 | High-voltage variable-frequency power cable |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104851500A (en) * | 2014-02-14 | 2015-08-19 | 安徽新华电缆(集团)有限公司 | High-temperature-resistant cable for petrochemical engineering |
| CN104851482A (en) * | 2014-02-14 | 2015-08-19 | 安徽新华电缆(集团)有限公司 | High-temperature-resistant waterproof drainage cable |
| CN103871594A (en) * | 2014-02-26 | 2014-06-18 | 安徽江淮电缆集团有限公司 | Polyethylene insulation impact-resistant abrasion-resistant corrosion-resistant cable |
| CN105869749A (en) * | 2016-05-18 | 2016-08-17 | 安徽华能电缆集团有限公司 | High-temperature-resistant aviation cable |
| US10978223B1 (en) | 2019-09-26 | 2021-04-13 | Rolls-Royce Corporation | Ground termination system for a variable frequency drive harness |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130626 |