CN202363165U - High-voltage copper wire shielding DC cable - Google Patents
High-voltage copper wire shielding DC cable Download PDFInfo
- Publication number
- CN202363165U CN202363165U CN2011205278759U CN201120527875U CN202363165U CN 202363165 U CN202363165 U CN 202363165U CN 2011205278759 U CN2011205278759 U CN 2011205278759U CN 201120527875 U CN201120527875 U CN 201120527875U CN 202363165 U CN202363165 U CN 202363165U
- Authority
- CN
- China
- Prior art keywords
- copper wire
- cable
- wire shielding
- screen
- direct current
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Cable Accessories (AREA)
Abstract
The utility model relates to a cable, in particularly relates to a high-voltage copper wire shielding DC cable. The high-voltage copper wire shielding DC cable comprises a conductor and an outer sheath, and is characterized in that an insulation layer is arranged on the outer sheath, a copper wire shielding layer is arranged in the outer sheath, a composite aluminium-plastics tape is externally applied on the copper wire shielding layer, and a semiconductive buffer zone or a semiconductive buffer water band is arranged between the insulation layer and the copper wire shielding layer. The high-voltage copper wire shielding DC cable has the characteristics of capability of effectively eliminating space charges in insulation, convenience for cable laying, no limit by fall, high operational reliability and the like.
Description
Technical field
The utility model relates to a kind of cable, especially relates to a kind of high pressure copper wire shielding direct current cables.
Background technology
As everyone knows, direct current transportation technology is to adopt to carry out direct current transportation based on voltage source converter that can cut-off the type device and PWM technology.This technology is fit to fields such as regenerative resource is incorporated into the power networks, distributed power generation is incorporated into the power networks, isolated island send electricity, urban distribution network is supplied power, asynchronous AC network is interconnected very much.30kV ~ 500kV high voltage direct current cable traditional structure is to adopt oil-impregnated paper insulation structure or oil-filled paper insulation structure, and adopts plumbous cover as watertight composition.In the insulating material (the particularly Insulation Material of this type of XLPE) of high electrical performance; There are miniature defectives such as pore, impurity; These miniature defectives can become captured current " trap "; When applying DC electric field for a long time, charge carrier has formed space charge after in the directional migration process, being captured by trap, causes concentrating and distortion of internal field then.It is superimposed that this moment, internal field was equivalent to the intensity of intensity and space charge of extra electric field.When Where topical electric field strength substantially exceeded the cable design field intensity, the insulation meeting is aging very soon to be punctured.Particularly in the polarity inversion process, internal field often sharply increases, and the probability of insulation breakdown increases greatly.Therefore eliminate space charge " trap ", forming space charge in avoiding insulating is the key of successfully developing the HVDC crosslinked cable.
The defective of conventional art and deficiency have 3 points.1, oil-impregnated paper insulation direct current cables inside has a large amount of fluid insulation oil to exist, and running environment is required height, must carry out fire prevention and handling; 2, oil pressure changes with variations in temperature in the running, must monitor in real time; 3, owing to the existence of oil pressure, cable is limited by drop.
Summary of the invention
The utility model mainly is to the above-mentioned technical problem of existing in prior technology, provides a kind of space charge, the cable laying that can effectively eliminate in the insulation to make things convenient for, do not receive the high pressure copper wire shielding direct current cables that drop limits, operational reliability is high.
The above-mentioned technical problem of the utility model mainly is able to solve through following technical proposals: a kind of high pressure copper wire shielding direct current cables; Conductor and oversheath have been comprised; It is characterized in that described conductor is arranged with insulating barrier outward; Be provided with the copper wire screen in the described oversheath, described copper wire screen is laid with aluminium-plastic tape outward, is provided with semi-conductive buffer band or semi-conductive buffer water-blocking band between described insulating barrier and the copper wire screen.The utility model efficiently solves XLPE problems with space charge under the direct current field intensity; Adopt special construction to adapt to special employing XLPE simultaneously as high-voltage DC cable insulating; Replace oil-paper and oil-filled paper insulated cable, the cable operation can be non-maintaining, and cable laying is convenient; Not limited by drop, operational reliability is high.The utility model is eliminated the space charge in the insulation; And the characteristic according to Electric Field Distribution is confirmed the construction of cable.
As preferably, described insulating barrier has comprised interior screen and outer screen and crosslinked polyetylene insulated.Operational reliability is high, fail safe is good.
As preferably, described copper wire screen is provided with outward that copper strips is counter to be pricked.Operational reliability is high, fail safe is good.
Therefore, the utlity model has space charge, the cable laying that effectively to eliminate in the insulation and make things convenient for, do not receive characteristics such as drop restriction, operational reliability height.
Description of drawings
Accompanying drawing 1 is a kind of structural representation of the utility model.
Embodiment
Pass through embodiment below, and combine accompanying drawing, do further bright specifically the technical scheme of the utility model.
Embodiment 1:
Shown in Figure of description 1, a kind of high pressure copper wire shielding direct current cables has comprised conductor 1 and oversheath 2, and conductor is arranged with insulating barrier 3 outward, and insulating barrier has comprised interior screen and outer screen and crosslinked polyetylene insulated.Be provided with copper wire screen 4 in the described oversheath, copper wire screen 4 is outer to be provided with that copper strips is counter to be pricked.The copper wire screen also is laid with aluminium-plastic tape 6 outward, is provided with semi-conductive buffer band 5 between insulating barrier 3 and the copper wire screen 4.The utility model efficiently solves XLPE problems with space charge under the direct current field intensity; Adopt special construction to adapt to special employing XLPE simultaneously as high-voltage DC cable insulating; Replace oil-paper and oil-filled paper insulated cable, the cable operation can be non-maintaining, and cable laying is convenient; Not limited by drop, operational reliability is high.The utility model is eliminated the space charge in the insulation; And the characteristic according to Electric Field Distribution is confirmed the construction of cable.
Should be understood that this embodiment only to be used to the utility model is described and be not used in the restriction the utility model scope.Should be understood that in addition those skilled in the art can do various changes or modification to the utility model after the content of having read the utility model instruction, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
Claims (3)
1. a high pressure copper wire shields direct current cables; Conductor (1) and oversheath (2) have been comprised; It is characterized in that described conductor is arranged with insulating barrier (3) outward; Be provided with copper wire screen (4) in the described oversheath, described copper wire screen is laid with aluminium-plastic tape (6) outward, is provided with semi-conductive buffer band (5) or semi-conductive buffer water-blocking band between described insulating barrier (3) and the copper wire screen (4).
2. high pressure copper wire shielding direct current cables according to claim 1 is characterized in that described insulating barrier has comprised interior screen and outer screen and crosslinked polyetylene insulated.
3. high pressure copper wire according to claim 1 and 2 shielding direct current cables is characterized in that described copper wire screen (4) is outer to be provided with that copper strips is counter to be pricked.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205278759U CN202363165U (en) | 2011-12-16 | 2011-12-16 | High-voltage copper wire shielding DC cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205278759U CN202363165U (en) | 2011-12-16 | 2011-12-16 | High-voltage copper wire shielding DC cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202363165U true CN202363165U (en) | 2012-08-01 |
Family
ID=46574334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205278759U Expired - Fee Related CN202363165U (en) | 2011-12-16 | 2011-12-16 | High-voltage copper wire shielding DC cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202363165U (en) |
-
2011
- 2011-12-16 CN CN2011205278759U patent/CN202363165U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU99895U1 (en) | POWER HIGH VOLTAGE ARMORED AC CABLE WITH SEPARATELY SCREENED CONDUCTORS | |
| CN203118633U (en) | Fire-resistant aluminum alloy variable frequency cable | |
| CN202434259U (en) | 750kV ultra high voltage crosslinked polyethylene insulating power cable | |
| CN202363165U (en) | High-voltage copper wire shielding DC cable | |
| CN202373374U (en) | High-voltage corrugated aluminum sheath direct current cable | |
| CN204695841U (en) | High-efficiency compact cable | |
| CN203351275U (en) | Optical fiber composite copper wire shielding type high-voltage and direct-current crosslinked cable having nominal voltage of 30kV-500kV | |
| RU164397U1 (en) | THREE-WAY POWER CABLE WITH INTEGRATED POLYETHYLENE | |
| CN204242665U (en) | A kind of high pressure waterproof power cable | |
| CN102074300A (en) | 500kV extra-high voltage (EHV) power cable | |
| CN202905273U (en) | Wind power generation power cable with nominal voltage of 35kV | |
| CN202434258U (en) | Novel high voltage and ultrahigh voltage crosslinked polyethylene insulated power cable | |
| CN206877706U (en) | Milliken conductor type aluminum cable steel reinforced aerial insulated cable | |
| CN204496953U (en) | The hydroelectric station High voltage output construction of cable | |
| CN201975154U (en) | Novel composite shielding high-voltage cross-linked polyethylene (XLPE) insulated power cable | |
| RU148879U1 (en) | THREE-PHASE POWER CABLE, NOT DISTRIBUTING COMBUSTION | |
| CN101206934A (en) | Direct current high voltage cable special for dust filter | |
| CN205542147U (en) | Novel power cable structure | |
| RU150536U1 (en) | SINGLE-WIRE CABLE WITH MULTI-WIRE SEALED ALUMINUM OR COPPER RESIDENT | |
| CN203351274U (en) | Optical fiber composite corrugated aluminium sheath type high-voltage and direct-current crosslinked cable having nominal voltage of 30kV-500kV | |
| CN204029423U (en) | A kind of flexible high pressure direct current power cable with cross-linked polyethylene insulation | |
| CN205722959U (en) | ± 320kV ultra-high voltage cross-linking polyethylene insulation flexible direct current power cable | |
| RU119928U1 (en) | POWER CABLE WITH INSULATION FROM CROSSED POLYETHYLENE | |
| CN103854798A (en) | Aluminum conductor electric shielding cable | |
| CN207409311U (en) | The crosslinked polyetylene insulated metallic sheath power cables of 220kV |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ZHEJIANG WANMA CO., LTD. Free format text: FORMER NAME: ZHEJIANG WANMA CABLE CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 311305 Ling'an Economic Development Zone, Zhejiang Province, South Ring Road, No. 88, No. Patentee after: ZHEJIANG WANMA CO., LTD. Address before: 311305 Ling'an Economic Development Zone, Zhejiang Province, South Ring Road, No. 88, No. Patentee before: Zhejiang Wanma Cable Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120801 Termination date: 20161216 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |