CN106159868B - Using the ac cable termination of non-linear preformed rubber stress cone - Google Patents
Using the ac cable termination of non-linear preformed rubber stress cone Download PDFInfo
- Publication number
- CN106159868B CN106159868B CN201610630256.XA CN201610630256A CN106159868B CN 106159868 B CN106159868 B CN 106159868B CN 201610630256 A CN201610630256 A CN 201610630256A CN 106159868 B CN106159868 B CN 106159868B
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- Prior art keywords
- cable
- stress cone
- silicon rubber
- rubber
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G15/00—Cable fittings
- H02G15/08—Cable junctions
- H02G15/18—Cable junctions protected by sleeves, e.g. for communication cable
- H02G15/184—Cable junctions protected by sleeves, e.g. for communication cable with devices for relieving electrical stress
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G15/00—Cable fittings
- H02G15/08—Cable junctions
- H02G15/18—Cable junctions protected by sleeves, e.g. for communication cable
- H02G15/184—Cable junctions protected by sleeves, e.g. for communication cable with devices for relieving electrical stress
- H02G15/188—Cable junctions protected by sleeves, e.g. for communication cable with devices for relieving electrical stress connected to a cable shield only
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- Cable Accessories (AREA)
Abstract
The present invention proposes a kind of ac cable termination using non-linear preformed rubber stress cone, belongs to high-voltage alternating cable accessory design field.Cable socket main body, cable conductor connecting fitting, seal cap and the non-linear preformed rubber stress cone that the ac cable termination is made up of silicon rubber insulation seat and silicon rubber insulation cluster parachute, wherein, stress cone is conductive or semiconductive portions are combined by silicon rubber and carbon black；Stress cone insulated part uses nonlinear conductance composite, is combined by zinc oxide ceramics powder granule with silicon rubber.The invention enables the voltage class scope of application of preformed rubber stress cone further to be expanded, and is applicable not only to low-voltage-grade cable socket, and can also play good field strength stepless action for voltage levels cable socket；Cable shield incision field strength concentration problem is not only solved also so that field strength concentration problem is addressed at the stress cone conical surface simultaneously, improves the reliability that power cable system is transported for a long time.
Description
Technical field
The invention belongs to high-voltage alternating cable accessory design field, and in particular to one kind uses non-linear preformed rubber stress
The ac cable termination of cone.
Background technology
With being continuously increased for society's electricity consumption amount and greatly developing for clean energy resource, people need more electric energy are defeated
It is sent to densely populated area.On the one hand, clean energy resource etc. is more positioned at the areas such as remote areas or sea, conventional overhead circuit
It is no longer desirable for delivering the power to electricity consumption concentration zones.On the other hand, utilization and city of the densely populated city to space resources
City's emphasis attractive in appearance etc. all no longer to be applicable overhead line to convey electric energy.Therefore need using defeated with higher conveying capacity
Electrically meet the power demand of people, for the densely inhabited districts such as big city, using high voltage power cable conduct
Entering line segment turns into inexorable trend.
At the same time, the application of nonlinear dielectric is also greatly developed.Nonlinear dielectric refer to electrical conductivity or
Relative dielectric constant changes and the dielectric of change with electric-field intensity, and its outstanding advantages is can be certainly in the case where handing over (or straight) stream electric field
Row homogenizing Electric Field Distribution, and insulation system performance is significantly reduced, the title for having " wisdom insulating materials ", the most typically application is
Zinc oxide pressure-sensitive ceramic in power system arrester.
Extensively using simultaneously there is also problem, high-voltage alternating cable needs to shield insulation power cable at cable socket
Cover layer to divest, so that electric stress concentration phenomenon occurs in insulation screen end, it is therefore desirable to which installation should in cable socket
Power cone eliminates field strength concentration phenomenon.As shown in figure 1, included at present using the ac cable termination of preformed rubber stress cone by stress
Cone conduction or semiconductive portions 1, the preformed rubber stress cone that stress cone insulated part 2 forms, silicon rubber insulation seat 3, silicon rubber
Cluster parachute 4, seal cap 5, cable conductor connecting fitting 6, wherein, silicon rubber insulation seat 3 is connected with silicon rubber cluster parachute 4, be wrapped in by
Cable socket main body is formed on the outside of the cable that cable conductor 7, cable insulation 8, insulation shield layer 9 form, seal cap 5 is set
Put and be connected in cable outer upper end portion with silicon rubber cluster parachute 4, cable conductor connecting fitting 6 passes through seal cap 5 and the phase of cable conductor 7
Even；By stress cone conduction or semiconductive portions 1, the preformed rubber stress cone that stress cone insulated part 2 forms is arranged on silicon rubber
In insulating base 3, it is in contact with the otch of insulation shield layer 9；The cable socket main body by cable conductor connecting fitting with
Overhead transmission line is connected.Wherein, the integral prefabricated shaping in the factory of preformed rubber stress cone, its characteristic determine cable termination field strength
Even results, traditional preformed rubber stress cone insulated part use the dielectric that conductance is fixed, such as silicon rubber, although so that cable
The field strength of insulation screen incision is obtained uniformly, but field strength concentration phenomenon is there is also at the stress cone conical surface, gives electric power electricity
The longtime running reliability of cable system brings threat.Nonlinear conductance material has a good voltage equalizing, and cable socket
The problem of field strength distribution is uneven be present, therefore it is equal field strength can will to be carried out in nonlinear conductance material lead-in cable attachment
It is even.
The content of the invention
Present invention aim to address the field strength concentration problem in cable socket annex preformed rubber stress cone, there is provided one
Kind using non-linear preformed rubber stress cone ac cable termination, the termination can improve power cable system transport for a long time it is reliable
Property, while make it that the voltage class scope of application of preformed rubber stress cone is further expanded.
A kind of ac cable termination using non-linear preformed rubber stress cone proposed by the present invention, it is characterised in that should
Ac cable termination includes cable socket main body, cable conductor connecting fitting, seal cap and non-linear preformed rubber stress cone, institute
State cable socket main body by cable conductor connecting fitting with overhead transmission line to be connected, the seal cap is arranged on cable socket main body
It is common by silicon rubber insulation seat and silicon rubber insulation cluster parachute close to the end of cable conductor connecting fitting, the cable socket main body
Form integral structure；The preformed rubber stress cone is arranged in silicon rubber insulation seat, with insulation shield layer otch phase
Contact.
The non-linear preformed rubber stress cone is made up of insulated part and conductive or semiconductive portions, conductive or semiconductive
Part is in contact with insulation shield layer otch；Wherein, stress cone is conductive or semiconductive portions are compound by silicon rubber and carbon black
Form, stress cone insulated part uses nonlinear conductance composite, by zinc oxide ceramics powder granule and silicon rubber it is compound and
Into；The degree of zinc oxide ceramics powder granule and granular size are by cable voltage class in nonlinear conductance composite
Determined with the physical dimension of cable；According to different voltage class and the physical dimension of cable, zinc oxide ceramics powder granule size
Between 50mm to 150mm, mass fraction is between 20% to 40%.
The features of the present invention and beneficial effect are：
1st, the present invention is different from existing silicone rubber prefabricated cable termination, using nonlinear conductance composite as prefabricated
Rubber stress cone insulated part, not only solve cable shield incision field strength concentration problem and also cause field at the stress cone conical surface
Strong concentration problem is addressed, and improves the reliability that power cable system is transported for a long time.
2nd, the present invention is by changing material property come the electricity of uniform cable socket field strength problem preformed rubber stress cone
The pressure grade scope of application is further expanded, and is applicable not only to low-voltage-grade cable socket, and for voltage levels
Cable socket can also play good field strength stepless action, suitable for 10kV and more than 10kV ac cables.
Brief description of the drawings
Fig. 1 is the existing and ac cable end structure schematic diagram of the invention using preformed rubber stress cone；
In figure, 1-stress cone conduction or semiconductive portions, 2-stress cone insulated part, 3-silicon rubber insulation seat, 4-
Silicon rubber cluster parachute, 5-seal cap, 6-cable conductor connecting fitting, 7-cable conductor, 8-cable insulation, 9-cable are exhausted
Edge screen layer.
Embodiment
Below according to instantiation and with reference to accompanying drawing, the present invention is described in detail, it is clear that described embodiment is only
It is the part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill people
All other example that member is obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
Referring to Fig. 1, a kind of ac cable termination using non-linear preformed rubber stress cone of the embodiment of the present invention, bag
Include：By stress cone conduction or semiconductive portions 1, the non-linear preformed rubber stress cone that stress cone insulated part 2 forms, by silicon rubber
Glue insulating base 3, the cable socket main body that silicon rubber cluster parachute 4 forms, seal cap 5, cable conductor connecting fitting 6, the cut cable
Head main body is wrapped on the outside of the cable being made up of cable conductor 7, cable insulation 8, insulation shield layer 9, is led by cable
Body connection gold utensil 6 is connected with overhead line, and the seal cap 5 is arranged on cable socket main body close to cable conductor connecting fitting 6
End, the non-linear preformed rubber stress cone are arranged in silicon rubber insulation seat 3, connected with the otch of insulation shield layer 9
Touch.
Wherein, stress cone is conductive or semiconductive portions 1 are combined by silicon rubber and carbon black, and stress cone insulated part 2 is adopted
With nonlinear conductance composite, it is combined by zinc oxide ceramics powder granule with silicon rubber；Nonlinear conductance composite
The degree of middle zinc oxide ceramics powder granule is determined with granular size by the physical dimension of cable voltage class and cable；
According to different voltage class and the physical dimension of cable, zinc oxide ceramics powder granule size is between 50mm to 150mm, quality
Fraction is between 20% to 40%.
The cable voltage class is 110kV, cable insulation thickness 16mm, and stress cone insulated part 2 is non-linear compound
Zinc oxide ceramics powder granule content is 30% in material, and granular size is 100mm -125mm.With using fixed conducting material
Compared as stress cone insulated part, during using nonlinear conductance material as stress cone insulated part material, cable socket is most
High field intensity declines 50%.
The cable voltage class is 500kV, cable insulation thickness 31mm, and stress cone insulated part 2 is non-linear compound
Zinc oxide ceramics powder granule content is 25% in material, and granular size is 75mm -100mm.With being made using fixed conducting material
Compared for stress cone insulated part, during using nonlinear conductance material as stress cone insulated part material, cable socket highest
Field strength declines 75%.
The operation principle of the present invention：Fixed conducting material is substituted as in advance using the composite with nonlinear conductance characteristic
The insulated part of rubber stress cone processed, material property parameter and the powerful small Adaptive matching of spatial field are realized, play intelligence and change
The effect of kind space field strength；When stress cone local field strength is excessive, insulated part conductance increase, local partial pressure reduces and caused local
Field strength reduces, and plays a part of uniform field strength.
Obviously, it is clearly to illustrate example of the present invention to be only in examples detailed above, and not to the embodiment party of invention
The limitation of formula.Meet that on the basis of described above other differences can also be made for those of ordinary skill in the field
The change or variation of form.Here all embodiments can not be described.
Claims (1)
1. a kind of ac cable termination using non-linear preformed rubber stress cone, including cable socket main body, cable conductor connect
Gold utensil, seal cap and non-linear preformed rubber stress cone are connect, the cable socket main body passes through cable conductor connecting fitting and frame
Ceases to be busy road is connected, and the seal cap is arranged on cable socket main body close to the end of cable conductor connecting fitting, the cut cable
Head main body is collectively forming integral structure by silicon rubber insulation seat and silicon rubber insulation cluster parachute；The preformed rubber stress cone is set
In silicon rubber insulation seat, it is in contact with insulation shield layer otch；The non-linear preformed rubber stress cone is by insulated part
With conductive or semiconductive portions composition, it is characterised in that insulated part uses nonlinear conductance composite, by zinc oxide ceramics
Powder granule is combined with silicon rubber, and conductive or semiconductive portions are combined by silicon rubber and carbon black；
Zinc oxide ceramics in the nonlinear conductance composite that described non-linear preformed rubber stress cone insulated part uses
Powder granule content and size determine by cable voltage class and cable geometry, according to the several of different voltage class and cable
What size, zinc oxide ceramics powder granule size is between 50mm to 150mm, and mass fraction is between 20% to 40%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610630256.XA CN106159868B (en) | 2016-08-03 | 2016-08-03 | Using the ac cable termination of non-linear preformed rubber stress cone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610630256.XA CN106159868B (en) | 2016-08-03 | 2016-08-03 | Using the ac cable termination of non-linear preformed rubber stress cone |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106159868A CN106159868A (en) | 2016-11-23 |
| CN106159868B true CN106159868B (en) | 2018-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610630256.XA Active CN106159868B (en) | 2016-08-03 | 2016-08-03 | Using the ac cable termination of non-linear preformed rubber stress cone |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107123463B (en) * | 2017-04-25 | 2019-02-05 | 晶锋集团股份有限公司 | A kind of zinc oxide composite insulating material and preparation method thereof that can adaptively regulate and control conductance and dielectric |
| CN107257116B (en) * | 2017-06-19 | 2019-08-16 | 清华大学 | Using the wall bushing of the equal laminated structure of nonlinear conductance composite material |
| CN107800109A (en) * | 2017-10-31 | 2018-03-13 | 清华大学 | Using the cable socket of the prefabricated rubber voltage-controlled tube of nonlinear conductance |
| CN107634497A (en) * | 2017-10-31 | 2018-01-26 | 清华大学 | Adaptively regulate and control the pre-fabricated electric cables transition joint of composite using electrical conductivity |
| CN107785133B (en) * | 2017-10-31 | 2019-09-27 | 清华大学 | Adaptively regulate and control the equipment outlet sleeve of composite material using conductivity |
| CN107947100A (en) * | 2018-01-08 | 2018-04-20 | 哈尔滨理工大学 | A kind of direct current cables terminal of new fixed form |
| KR102589064B1 (en) * | 2018-03-29 | 2023-10-12 | 엘에스전선 주식회사 | Termination box of power cable |
| CN109796765A (en) * | 2019-01-09 | 2019-05-24 | 清华大学 | The nonlinear conductance composite materials of high-mechanical property |
| CN113471923B (en) * | 2021-05-26 | 2022-11-01 | 中科英华长春高技术有限公司 | 27.5kV semi-rigid thermal shrinkage cable terminal for high-speed rail |
| CN113504442A (en) * | 2021-07-14 | 2021-10-15 | 国网北京市电力公司 | Coil-mounted high-voltage emergency repair cable detection device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2449399Y (en) * | 2000-09-29 | 2001-09-19 | 佘晓峰 | Double-layer stress-dispersed cross linking cable end |
| CN2593430Y (en) * | 2002-10-25 | 2003-12-17 | 上海三原电缆附件公司 | EPDM rubber stress cone |
| SE531409C2 (en) * | 2006-12-20 | 2009-03-24 | Abb Research Ltd | Field-controlling material |
| JP4430692B2 (en) * | 2007-06-22 | 2010-03-10 | 昭和電線ケーブルシステム株式会社 | Polymer sleeve and cable termination connection using the same |
| CN201742071U (en) * | 2010-06-30 | 2011-02-09 | 吉林市吉福新材料有限责任公司 | High-voltage cable combined stress control cable terminal |
| CN103259240B (en) * | 2013-05-13 | 2016-01-20 | 哈尔滨理工大学 | A kind of plastic insulation high voltage direct current cable joint Stress Control body |
-
2016
- 2016-08-03 CN CN201610630256.XA patent/CN106159868B/en active Active
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| CN106159868A (en) | 2016-11-23 |
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