CN202217524U - High-voltage shielding flexible cable - Google Patents
High-voltage shielding flexible cable Download PDFInfo
- Publication number
- CN202217524U CN202217524U CN2011203341940U CN201120334194U CN202217524U CN 202217524 U CN202217524 U CN 202217524U CN 2011203341940 U CN2011203341940 U CN 2011203341940U CN 201120334194 U CN201120334194 U CN 201120334194U CN 202217524 U CN202217524 U CN 202217524U
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- flexible cable
- screen
- conductor
- cable
- tension shielding
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Abstract
The utility model discloses a high-voltage shielding flexible cable which comprises a cable core, an insulating layer and a shielding layer, wherein the cable core is a flexible conductor. Compared with the common high-voltage cross-linked polyethylene insulation power cable, the structure of the conventional rigid conductor is broken through by the structural design of the product; the flexible conductor is adopted as the cable core, so that the bending property of the cable is improved, and the shielding performance and the anti-interference performance are better; therefore, the high-voltage shielding flexible cable is completely suitable for occasions with special requirements in the aspects such as bending, shielding, voltage, pulse, convenient installing and laying and the like, is in accordance with the national standard requirements, is reasonable in product process flow, and can be produced by the existing equipment.
Description
Technical field
The utility model relates to a kind of high-tension shielding flexible cable.
Background technology
At present, common high-voltage cross-linking polythene insulated power cable adopts 2 types of conductor compactings usually, and milliken conductor is adopted in the heavy in section, is used for AC system electric energy transmission & distribution.Cable insulation is thicker, causes cable very hard, and bad bending is as just can't crookedly using at special occasions.Adopt the copper strips shielding simultaneously, the cable bending property is reduced.
In order to adapt to the occasion that aspects such as bending radius, signal shielding, high voltage, big electric current is had specific (special) requirements, the inventor has developed the high-tension shielding flexible cable, has this case to produce then.
The utility model content
The purpose of the utility model is to provide a kind of high-tension shielding flexible cable, to be applicable to that aspect such as convenient is laid in bending, shielding, high voltage, installation has the specific (special) requirements occasion.
To achieve these goals, the solution of the utility model is:
The high-tension shielding flexible cable comprises core, insulating barrier and screen composition, and it is characterized in that: core is a flexible conductor.
Said core is selected the 5th type of flexible conductor in the GB/T3956-2008 standard for use, through bunch, stranded forming again.
Said insulating barrier adopts LLDPE XLPE ultra-clean Insulation Material.
Said screen is the copper wire braiding structure of certain count.
Said screen is that the copper wire of certain density twines sheathed structure.
Said screen is made up of conductor shield, insulation screen and copper wire screen; The outer wrapped one deck conductor semiconductive nylon tape earlier of core; Extrusion molding one deck conductor shield again, extrusion molding one layer insulating on the conductor shield, the outer first extrusion molding one deck insulation screen of insulating barrier; Wrapped again one deck insulation semiconductive nylon tape coats one deck copper wire screen on the insulation semiconductive nylon tape.
The outer wrapped layer of non-woven fabric of said copper wire screen.
The outermost of said high-tension shielding flexible cable also increases by a restrictive coating.
Said restrictive coating adopts polyvinylchloride elastomer or rubber sheath layer.
After adopting such scheme, the utility model is compared with common high-voltage cross-linking polythene insulated power cable, the product structure design hard conductor structure of breaking the normal procedure; Core is selected flexible conductor for use, has increased the bending property of cable, and shielding, anti-interference are better; So this cable product satisfies the occasion that there is specific (special) requirements aspects such as bending, shielding, voltage, pulse, installation being laid convenience fully; Comply with the national standard requirements again, product process flow is reasonable, just can produce according to present equipment.
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
Description of drawings
Fig. 1 is a high-tension shielding flexible cable cross section structural map.
Label declaration
1 core, 2 conductor semiconductive nylon tapes
3 conductor shields, 4 insulating barriers
5 insulation screens, 6 insulation semiconductive nylon tapes
7 copper wire screens, 8 nonwoven fabrics
9 restrictive coatings.
Embodiment
As shown in Figure 1, the high-tension shielding flexible cable that the utility model discloses is such: from inside to outside, mainly comprise core 1, insulating barrier 4 and screen 7 compositions.
The key technology of this case is: core 1 is flexible conductor, plays the conducting electric current and uses.Specifically can select the 5th type of flexible conductor in the GB/T3956-2008 standard for use, through bunch, stranded forming again.This structure can make single line and strand in BENDING PROCESS, all have certain mutual slippage, and the product flexibility is mainly reflected in the core softness.
Insulating barrier 4 adopts LLDPE XLPE ultra-clean Insulation Material, is the key of product insulation, conductor current is played insulation use.XLPE ultra-clean Insulation Material has splendid gas performance, and the little characteristics of dielectric loss.The high-pressure cross-linking cable product requires higher to insulating material, not only will have well electrical insulating property, also requires the growth of certain anti-water power branch, and the degree of purity of XLPE Insulation Material then directly influences its insulation property and sets growth performance with anti-water power.So insulation is selected for use than the demanding ultra-clean material of national standard.XLPE ultra-clean Insulation Material, anti-ageing characteristic that it is splendid and superpower resistance to heat distorsion have determined 90 ℃ of twisted polyethylene cable normal operating temperatures, the instantaneous short circuit temperature reaches 250 ℃.
Screen is that the copper wire braiding structure of certain count or the copper wire of certain density twine sheathed structure.Screen specifically can be made up of conductor shield 3, insulation screen 5 and copper wire screen 7; Core 1 outer wrapped one deck conductor semiconductive nylon tape 2 earlier; Extrusion molding one deck conductor shield 3 again, extrusion molding one layer insulating 4 on the conductor shield 3, insulating barrier 4 outer first extrusion molding one deck insulation screens 5; Wrapped again one deck insulation semiconductive nylon tape 6 coats one deck copper wire screen 7 on the insulation semiconductive nylon tape 6.Conductor semiconductive nylon tape 2 not only works the effect of tightening to core 1; Also and conductor shield 3 together improve the conductor Electric Field Distribution uniformity (since the conductor monofilament between small slit is arranged; The trickle burr that produces when conductor is stranded in addition, these certainly will cause the uniformity of Electric Field Distribution, thereby cause the increase of partial discharge; Serious cause puncture, conductor screen then helps to improve defective in this respect).Conductor shield 3 has not only reduced partial discharge, and its thermal resistance can prevent that the high temperature on the core 1 from directly impacting insulating barrier 4, closely contacts between conductor shield 3 and the XLPE ultra-clean insulating barrier 4, effectively suppresses the growth of water power branch.The effect of insulation screen 5 is the air gaps that reduce between insulation and insulation semiconductive nylon tape 6 and the copper wire screen 7, and forms a voltage plane such as outer, the zero potential in the composition system with copper wire screen 7.The double-deck copper wire high density braiding of copper wire screen 7 usefulness specifically adopts density to surpass certain requirement, surpasses 90% like the individual layer count; Copper wire screen 7 is not only as the zero potential of system; Still it is whole that the anti-interference main function components with to external shield of product, copper wire screen 7 and insulation screen 5 and insulation semiconductive nylon tape 6 are formed a shielding, reaches the shielding properties requirement; Also increased the bendability of product, be convenient to move with little space mounting and use.When in a single day product was short-circuited, copper wire screen 7 can also through capacitance current, also have lightning-arrest effect during work as the passage of Leakage Current.
The utility model also increases by a restrictive coating 9 at outermost, can adopt polyvinylchloride elastomer or rubber sheath layer.Restrictive coating 9 is parts of protection whole cable structure, and certain thickness requirement and enough mechanical performances are arranged, and as the outermost layer protective layer, can also increase the flexibility of product, satisfies the requirement of product to bending property.
The utility model is wrapped nonwoven fabrics 8 outside copper wire screen 7 is gone back, and purpose protection copper wire prevents the burr on the copper wire simultaneously, punctures restrictive coating 9.
The utility model core is selected the 5th type of flexible conductor in the GB/T3956-2008 standard for use, through bunch, stranded again, promptly complies with the national standard requirements, and increases the bending property of cable again.Common high-voltage cross-linking polythene insulated power cable shielding adopts copper strips wrapped, and the utility model adopts double-deck copper wire braid shielded, has not only satisfied shielding requirements, reaches the soft and anti-interference requirement of cable simultaneously.Insulating material is selected the pure cross-linked polyethylene insulating material of superhigh pressure for use, and performance is higher than the requirement of national standard to this type of cable fully.Compare with common power cable with cross-linked polyethylene insulation; The utility model product is except that keeping common high pressure XLPE insulated cable product original electric and mechanical performance; Also have good bandability, shielding properties is good; Good interference free performance is arranged, radiation little with characteristics such as fail safe is good, can stand at a high speed, the frequently impact of frequency conversion voltage, high-voltage large current pulse signal.
Claims (8)
1. the high-tension shielding flexible cable comprises core, insulating barrier and screen composition, and it is characterized in that: core is a flexible conductor.
2. high-tension shielding flexible cable as claimed in claim 1 is characterized in that: said core is selected the 5th type of flexible conductor in the GB/T3956-2008 standard for use, through bunch, stranded forming again.
3. high-tension shielding flexible cable as claimed in claim 1 is characterized in that: said insulating barrier adopts LLDPE XLPE ultra-clean Insulation Material.
4. high-tension shielding flexible cable as claimed in claim 1 is characterized in that: said screen is that copper wire braiding structure or copper wire twine sheathed structure.
5. high-tension shielding flexible cable as claimed in claim 1; It is characterized in that: said screen is made up of conductor shield, insulation screen and copper wire screen, core outer wrapped one deck conductor semiconductive nylon tape, extrusion molding one deck conductor shield more earlier; Extrusion molding one layer insulating on the conductor shield; The outer first extrusion molding one deck insulation screen of insulating barrier, wrapped again one deck insulation semiconductive nylon tape coats one deck copper wire screen on the insulation semiconductive nylon tape.
6. high-tension shielding flexible cable as claimed in claim 5 is characterized in that: the outer wrapped layer of non-woven fabric of said copper wire screen.
7. high-tension shielding flexible cable as claimed in claim 1 is characterized in that: the outermost of said high-tension shielding flexible cable also increases by a restrictive coating.
8. high-tension shielding flexible cable as claimed in claim 7 is characterized in that: said restrictive coating adopts polyvinylchloride elastomer or rubber sheath layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203341940U CN202217524U (en) | 2011-09-07 | 2011-09-07 | High-voltage shielding flexible cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203341940U CN202217524U (en) | 2011-09-07 | 2011-09-07 | High-voltage shielding flexible cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202217524U true CN202217524U (en) | 2012-05-09 |
Family
ID=46016767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203341940U Expired - Lifetime CN202217524U (en) | 2011-09-07 | 2011-09-07 | High-voltage shielding flexible cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202217524U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103123825A (en) * | 2013-03-22 | 2013-05-29 | 国网电力科学研究院 | High voltage and ultrahigh voltage flexible direct current transmission optical fiber composite extrusion insulation submarine cable |
| CN112768118A (en) * | 2020-12-28 | 2021-05-07 | 安徽宏源特种电缆集团有限公司 | Constant-inductance pulse cable and manufacturing method thereof |
| CN114283974A (en) * | 2021-12-20 | 2022-04-05 | 四川九洲线缆有限责任公司 | Special cable for connection between high-voltage equipment |
-
2011
- 2011-09-07 CN CN2011203341940U patent/CN202217524U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103123825A (en) * | 2013-03-22 | 2013-05-29 | 国网电力科学研究院 | High voltage and ultrahigh voltage flexible direct current transmission optical fiber composite extrusion insulation submarine cable |
| CN103123825B (en) * | 2013-03-22 | 2016-02-03 | 国网电力科学研究院 | High pressure and ultrahigh voltage flexible direct current transmission optical fiber compound extruded insulation submarine cable |
| CN112768118A (en) * | 2020-12-28 | 2021-05-07 | 安徽宏源特种电缆集团有限公司 | Constant-inductance pulse cable and manufacturing method thereof |
| CN114283974A (en) * | 2021-12-20 | 2022-04-05 | 四川九洲线缆有限责任公司 | Special cable for connection between high-voltage equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120509 |
|
| CX01 | Expiry of patent term |