CN202434258U - Novel high voltage and ultrahigh voltage crosslinked polyethylene insulated power cable - Google Patents

Novel high voltage and ultrahigh voltage crosslinked polyethylene insulated power cable Download PDF

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Publication number
CN202434258U
CN202434258U CN2012200005745U CN201220000574U CN202434258U CN 202434258 U CN202434258 U CN 202434258U CN 2012200005745 U CN2012200005745 U CN 2012200005745U CN 201220000574 U CN201220000574 U CN 201220000574U CN 202434258 U CN202434258 U CN 202434258U
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CN
China
Prior art keywords
layer
outside
semi
conductive
wrapped
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Expired - Fee Related
Application number
CN2012200005745U
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Chinese (zh)
Inventor
姚恒斌
何新刚
何正寅
乔磊
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Yangzhou Shuguang Cable Co Ltd
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Yangzhou Shuguang Cable Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
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Application filed by Yangzhou Shuguang Cable Co Ltd filed Critical Yangzhou Shuguang Cable Co Ltd
Priority to CN2012200005745U priority Critical patent/CN202434258U/en
Application granted granted Critical
Publication of CN202434258U publication Critical patent/CN202434258U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a novel high voltage and ultrahigh voltage crosslinked polyethylene insulated power cable. The novel high voltage and ultrahigh voltage crosslinked polyethylene insulated power cable comprises a conductor, wherein the conductor is wrapped by a semi-conductive band outside to form a semi-conductive wrapped layer. An internal semi-conductive shielding material, an internal non-linear coating material, an insulating material, an external non-linear coating material and an external semi-conductive shielding material are co-extruded out of the semi-conductive wrapped layer to respectively form an internal semi-conductive shielding layer, an internal non-linear coating layer, an insulating layer, an external non-linear coating layer and an external semi-conductive shielding layer. The external semi-conductive shielding layer is wrapped by a buffer layer, a metal shielding layer, an external water retaining buffer layer, a metal sheath layer, an anticorrosive layer, an external protective layer and a semi-conductive coating layer. The novel high voltage and ultrahigh voltage crosslinked polyethylene insulated power cable has the effect of preventing electron emission and shielding, and meanwhile, has the capacity of automatically homogenizing electrical field distribution in a non-uniform electrical field and effectively inhibits local electrical fields on the insulating surface of the cable and the local electrical fields inside from concentrating so as to inhibit formation and development of electrical trees in the high voltage and ultrahigh voltage crosslinked polyethylene insulated power cable, so that the service life of the cable is prolonged and the operational reliability of the cable is ensured.

Description

Novel high-pressure, ultra-high voltage cross-linking polyethylene-insulated power cable
Technical field
The utility model relates to a kind of high-tension electricity transmission cable, relates in particular to a kind of novel high-pressure, ultra-high voltage cross-linking polyethylene-insulated power cable.
Background technology
Along with the progress and the expanding economy of society, human increasingly high to the degree of dependence of electric energy, increasing to the demand of electric energy.But most countries all exists the problem of primary energy and productivity skewness weighing apparatus in the world, therefore, builds the great attention that big capacity, remote electrical network have obtained national governments.China is just at develop actively superhigh pressure, special ehv power transmission circuit; Be accompanied by the development of EHV transmission technology; Important component part-power cable to electrical network has proposed increasingly high requirement; Must hold out against the test of high pressure, superhigh pressure; Since twisted polyethylene cable have good electric property, transmission capacity big (the long-term work temperature can reach 90 ℃), in light weight, can high drop or advantages such as vertical run, installation and maintenance be convenient, it constantly increases at high pressure, extra-high-tension cable field portion, and the trend that replaces other type cable is gradually arranged.
Cable long-time running and use experience show; Aging the wearing out with water tree of electric branch is to cause high-tension cable crosslinked polyethylene performance degradation until one of principal element of destroying; Its generation and development mainly receive stress, chemical potential effect, partial discharge function influence; Therefore, the generation of prevention of water tree needs integrated control.Facts have proved; Adopt prior art and measure still can't guarantee to eliminate fully the formation and development of electric branch in high pressure, the crosslinked polyetylene insulated layer of extra-high-tension cable; There is branch discharge in various degree in high pressure, the ultra-high voltage cross-linking polyethylene insulated cable running; Cause its decreasing insulating, the generation of the crosslinked polyetylene insulated layer of the high-tension cable breakdown accident that causes because of the electric branch discharge is arranged in the time of also.Therefore, the formation of the electric branch in the crosslinked polyetylene insulated layer of inhibition high-tension cable is the problem that high pressure, extra-high-tension cable research and development, manufacturing and use department pay close attention to development always.
The utility model content
The utility model is in order to overcome the above problems novel high-pressure, the ultra-high voltage cross-linking polyethylene-insulated power cable that a kind of simple in structure, long service life is provided, has had good inhibition electric branch generative capacity.
The technical scheme of the utility model is: comprise conductor; Wrapped semi-conductive tape forms the semiconductive lapping layer outside conductor, outside the semiconductive lapping layer semiconductive shieldin material in 5 layers of co-extrusion, in non-linear coating material, Insulation Material, outer non-linear coating material, semi-conductive shield outside material form respectively inner semiconductor layer, in non-linear coating layer, insulating barrier, outer non-linear coating layer, out semiconductor layer; Wrapped semiconductive waterstop forms resilient coating outside out semiconductor layer; Outside resilient coating, dredge around the soft copper silk with one heart and form metal screen layer; The wrapped elasticity expanding material resilient coating that blocks water outside forming that vertically blocks water outside metal screen layer, the outer vertically weld metal aluminium strip of water-blocking buffer layer forms metal sheath layer outside, outside metal sheath layer, smears pitch and forms anticorrosive coat; Outside anticorrosive coat, extrude plastic sheath and form outer jacket, outside outer jacket, smear the semiconductive powder and form the semiconductive overlay.
The beneficial effect of the utility model is adsorbable conductor thread core electrons emitted in insulating barrier, plays the effect of anti-electronics emission barrier; Has in inhomogeneous field the ability of homogenizing Electric Field Distribution voluntarily simultaneously; Can effectively suppress the cable insulation surface concentrates with inner internal field; Thereby play inhibition high pressure, crosslinked polyetylene insulated middle electric branch formation of extra-high-tension cable and the effect that develops, reach the useful life of prolongation cable and the purpose of reliability of operation.Power cable long-term work temperature of the present invention can reach 90 ℃; The longest sustainable time is 5 seconds during short circuit; The maximum temperature that cable conductor allows can reach 250 ℃; Useful life is than about 1 times of existing power cable extension, and this power cable is applicable to 750KV and following superhigh pressure, the electric power transfer of high-tension cable.
Description of drawings
Fig. 1 is the structural representation of the utility model.
1 is conductor among the figure, the 2nd, the semiconductive lapping layer, the 3rd, inner semiconductor layer, the 4th, in non-linear coating layer; The 5th, insulating barrier, the 6th, outer non-linear coating layer, the 7th, out semiconductor layer, the 8th, interior vertical water-blocking buffer layer; The 9th, metal screen layer, the 10th, outer vertically water-blocking buffer layer, the 11st, metal sheath layer; The 12nd, anticorrosive coat, the 13rd, outer jacket, the 14th, semiconductive overlay.
Embodiment
Novel high-pressure, ultra-high voltage cross-linking polyethylene-insulated power cable; Comprise conductor 1; Wrapped semi-conductive tape forms semiconductive lapping layer 2 outside conductor 1, outside semiconductive lapping layer 2 semiconductive shieldin material in 5 layers of co-extrusion, in non-linear coating material, Insulation Material, outer non-linear coating material, semi-conductive shield outside material form respectively inner semiconductor layer 3, in non-linear coating layer 4, insulating barrier 5, outer non-linear coating layer 6, out semiconductor layer 7; Vertical water-blocking buffer layer 8 in wrapped semiconductive waterstop forms outside out semiconductor layer 7; Outside interior vertical water-blocking buffer layer 8, dredge around the soft copper silk with one heart and form metal screen layer 9; Outside metal screen layer 9 wrapped elasticity vertically block water expanding material form outside vertical water-blocking buffer layer 10; Vertically water-blocking buffer layer 10 outer vertically weld metal aluminium strips form metal sheath layer 11 outside; Outside metal sheath layer 11, smear pitch and form anticorrosive coat 12, outside anticorrosive coat 12, extrude plastic sheath and form outer jacket 13, outside outer jacket 13, smear the semiconductive powder and form semiconductive overlay 14.

Claims (1)

1. novel high-pressure, ultra-high voltage cross-linking polyethylene-insulated power cable; Comprise conductor; It is characterized in that: wrapped semi-conductive tape forms the semiconductive lapping layer outside conductor, outside the semiconductive lapping layer semiconductive shieldin material in 5 layers of co-extrusion, in non-linear coating material, Insulation Material, outer non-linear coating material, semi-conductive shield outside material form respectively inner semiconductor layer, in non-linear coating layer, insulating barrier, outer non-linear coating layer, out semiconductor layer; Wrapped semiconductive waterstop forms resilient coating outside out semiconductor layer; Outside resilient coating, dredge around the soft copper silk with one heart and form metal screen layer; The wrapped elasticity expanding material resilient coating that blocks water outside forming that vertically blocks water outside metal screen layer, the outer vertically weld metal aluminium strip of water-blocking buffer layer forms metal sheath layer outside, outside metal sheath layer, smears pitch and forms anticorrosive coat; Outside anticorrosive coat, extrude plastic sheath and form outer jacket, outside outer jacket, smear the semiconductive powder and form the semiconductive overlay.
CN2012200005745U 2012-01-04 2012-01-04 Novel high voltage and ultrahigh voltage crosslinked polyethylene insulated power cable Expired - Fee Related CN202434258U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012200005745U CN202434258U (en) 2012-01-04 2012-01-04 Novel high voltage and ultrahigh voltage crosslinked polyethylene insulated power cable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012200005745U CN202434258U (en) 2012-01-04 2012-01-04 Novel high voltage and ultrahigh voltage crosslinked polyethylene insulated power cable

Publications (1)

Publication Number Publication Date
CN202434258U true CN202434258U (en) 2012-09-12

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2012200005745U Expired - Fee Related CN202434258U (en) 2012-01-04 2012-01-04 Novel high voltage and ultrahigh voltage crosslinked polyethylene insulated power cable

Country Status (1)

Country Link
CN (1) CN202434258U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107871556A (en) * 2016-09-23 2018-04-03 江苏亨通电力电缆有限公司 The aerial insulated cable and its manufacturing process of high current-carrying capacity
USD868701S1 (en) 2014-08-07 2019-12-03 Henkel Ag & Co. Kgaa Overhead transmission conductor cable

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD868701S1 (en) 2014-08-07 2019-12-03 Henkel Ag & Co. Kgaa Overhead transmission conductor cable
CN107871556A (en) * 2016-09-23 2018-04-03 江苏亨通电力电缆有限公司 The aerial insulated cable and its manufacturing process of high current-carrying capacity

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GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20120912

Termination date: 20150104

EXPY Termination of patent right or utility model