CN102956323A - Medium-voltage power cable for nuclear power station - Google Patents
Medium-voltage power cable for nuclear power station Download PDFInfo
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- CN102956323A CN102956323A CN2011102428462A CN201110242846A CN102956323A CN 102956323 A CN102956323 A CN 102956323A CN 2011102428462 A CN2011102428462 A CN 2011102428462A CN 201110242846 A CN201110242846 A CN 201110242846A CN 102956323 A CN102956323 A CN 102956323A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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Abstract
The invention relates to a medium-voltage power cable, in particular to a medium-voltage power cable for the nuclear power station. According to the technical scheme, the medium-voltage power cable for the nuclear power station comprises a conductor (1), a conductor shielding layer (2), an insulation layer (3) and an insulation shielding layer (4) are co-extruded outside the conductor (1), a copper belt shielding layer (5) wraps outside the insulation shielding layer (4), and a sheath (6) is extruded outside the copper belt shielding layer (5). Therefore, the low-voltage power cable for the nuclear power station is high in long-term thermal aging resistance, nuclear radiation resistance, DBA (design basis accident) resistance and immersion performance after DBA.
Description
Technical field
The present invention relates to a kind of medium-pressure power cable, particularly a kind of medium-voltage power cable used in nuclear is applicable to the power cable of rated voltage 6/10kV and 12/20kV, belongs to the cable application technical field.
Background technology
AP1000 is international state-of-the-art generation Ⅲ nuclear power technology.AP1000 is that single heap is arranged two loop units, electrical power 1250MWe, and 60 years designed lives, main safety system adopts non-active design, is arranged in the containment, and containment is double-decker, and skin is prestressed concrete, and internal layer is steel plate structure.
Plan according to national nuclear power Long-and Medium-term Development: to the year two thousand twenty, the Chinese Nuclear Power installed capacity will account for about 7% of total installed capacity of electricity capacity, reach 7,500 ten thousand kilowatts.That is: China will approve the construction of six million kilowatt nuclear power units every year at least, finally build up 30 nuclear power stations again.These nuclear power stations will adopt the AP1000 technology comprehensively.
For the AP1000 technology, its supporting medium-pressure power cable requires to possess the useful life more than 60 years, and has low cigarette, Halogen, fire-retardant, anti-long term heat ageing, anti-nuclear radiation, anti-DBA(design basis accident) and long-term submergence and the high insulating property of DBA.
The open medium-voltage water-blocked power cable for nuclear power station of China Patent Publication No. CN201584211U, it is by conductor, and conductor shield, crosslinked polyetylene insulated layer, insulation screen, semiconductor water blocking layer, copper strip shielding layer, waterproofing rope filling, wrapped waterstop, oxygen barrier layer and low smoke and zero halogen sheath form.It is three-core structure, complex structure, and the non-oxidizability of common copper strip shielding is not enough.
The open cable for nuclear power station of China Patent Publication No. CN201430016Y, double-layer insulating structure is adopted in this cable conductor insulation, insulation is the low smoke, zero halogen polyolefin for crosslinked polyethylene, external insulation in the conductive surface, and insulating barrier is provided with oxygen barrier layer, inserts and halogen-free polyolefin sheath outward.It is mainly not enough: unshielded layer, shielding is general., can't reply accident hot environment.
Summary of the invention
The objective of the invention is for the deficiencies in the prior art, the extraordinary medium-voltage power cable used in nuclear of submergence performance behind a kind of anti-long term heat ageing performance, anti-nuclear radiation performance, anti-DBA and the DBA is provided.
For realizing above-mentioned technical purpose, the present invention is by the following technical solutions: a kind of medium-voltage power cable used in nuclear is made of the outer three-layer co-extruded conductor shield of conductor, insulating barrier and insulation screen conductor, the outer wrapped copper strip shielding layer of described insulation screen, the copper strip shielding layer extrudes sheath outward.
Further, described conductor is the tinned copper wire conductor after stranded.
Further, described copper strip shielding layer is the tin-coated copper strip screen.
Further, described insulating barrier is the low flue unhalogen flame-retarded ethylpropyl rubber layer of vapor crosslinking.
Further, described sheath is the low-smoke non-halogen flame-retardant thermoset rubber sheath of vapor crosslinking.
After adopting technique scheme, the present invention has following beneficial effect:
(1) adopt single cored structure, simple in structure.Insulation screen is wrapped copper strip shielding layer outward, improves the shielding of whole cable, the Radiation hardness grow.
(2) the tinned copper wire conductor after stranded improves the electric conductivity of conductor, makes conductor soft and not fragile.
(3) adopt the tin-coated copper strip screen, anti-oxidant, the life-span is longer, and is more not fragile, prevent from insulating and the aging ability of sheath strong, the Radiation hardness grow.
(4) the ethylene-propylene rubber layer of vapor crosslinking makes the insulating properties of cable stronger.
(5) the thermoset rubber sheath makes the anti-nuclear radiation of cable, anti-DBA, anti-long term heat ageing, improves cable useful life.Vapor crosslinking makes insulating properties better, and other performance is better.
(6) ethylene propylene rubber insulated layer, thermoset rubber sheath make cable more flexible, and be more convenient and be suitable for the narrow and small zone of nuclear power station and use.
Submergence performance behind the anti-long term heat ageing performance of the present invention, anti-nuclear radiation performance, anti-DBA and the DBA is good especially.
Description of drawings
Fig. 1 is structural representation of the present invention.
Among the figure: 1, conductor, 2, conductor shield, 3, insulating barrier, 4, insulation screen, 5, copper strip shielding layer, 6, sheath.
Embodiment
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
Embodiment
As shown in Figure 1, a kind of medium-voltage power cable used in nuclear is made of conductor 1, conductor 1 outer three-layer co-extruded conductor shield 2, insulating barrier 3 and insulation screen 4.Insulation screen 4 outer wrapped copper strip shielding layers 5, the copper strip shielding layer 5 outer sheath 6 that extrudes.
Wherein: the tinned copper wire conductor after conductor 1 is preferred stranded, the low flue unhalogen flame-retarded ethylpropyl rubber layer of insulating barrier 3 preferred vapor crosslinkings, copper strip shielding layer 5 preferred tin-coated copper strip screen, sheath 9 preferred low-smoke non-halogen flame-retardant thermoset rubber sheaths, it adopts vapor crosslinking.
Adopt the tinned copper wire conductor after stranded, improve the electric conductivity of conductor, make conductor soft and not fragile.
The ethylene-propylene rubber layer of vapor crosslinking makes the insulating properties of cable stronger.
Adopt the tin-coated copper strip screen, anti-oxidant, the life-span is longer, and is more not fragile, prevent from insulating and the aging ability of sheath strong, the Radiation hardness grow.
After adopting such scheme, reach more than 60 years the useful life of medium-voltage power cable used in nuclear, and simple in structure, anti-radiation property is good.
The invention is not restricted to above-described embodiment, the technical scheme that all employings are equal to or the equivalence replacement forms all falls into the protection range that the present invention requires.
Claims (5)
1. medium-voltage power cable used in nuclear, consisted of by conductor (1), the outer three-layer co-extruded conductor shield (2) of conductor (1), insulating barrier (3) and insulation screen (4), it is characterized in that: the outer wrapped copper strip shielding layer (5) of described insulation screen (4), the outer sheath (6) that extrudes of copper strip shielding layer (5).
2. medium-voltage power cable used in nuclear according to claim 1 is characterized in that: described conductor (1) is the tinned copper wire conductor after stranded.
3. medium-voltage power cable used in nuclear according to claim 1, it is characterized in that: described copper strip shielding layer (5) is the tin-coated copper strip screen.
4. medium-voltage power cable used in nuclear according to claim 1, it is characterized in that: described insulating barrier (3) is the low flue unhalogen flame-retarded ethylpropyl rubber layer of vapor crosslinking.
5. medium-voltage power cable used in nuclear according to claim 1, it is characterized in that: described sheath (6) is the low-smoke non-halogen flame-retardant thermoset rubber sheath of vapor crosslinking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102428462A CN102956323A (en) | 2011-08-23 | 2011-08-23 | Medium-voltage power cable for nuclear power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102428462A CN102956323A (en) | 2011-08-23 | 2011-08-23 | Medium-voltage power cable for nuclear power station |
Publications (1)
| Publication Number | Publication Date |
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| CN102956323A true CN102956323A (en) | 2013-03-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2011102428462A Pending CN102956323A (en) | 2011-08-23 | 2011-08-23 | Medium-voltage power cable for nuclear power station |
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| CN (1) | CN102956323A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104538095A (en) * | 2015-01-13 | 2015-04-22 | 青岛华高能源科技有限公司 | Shielding type flexible cable made of graphene compounded rubber materials |
| CN107342136A (en) * | 2017-06-23 | 2017-11-10 | 中天科技海缆有限公司 | A kind of filled type jacket structure cable |
-
2011
- 2011-08-23 CN CN2011102428462A patent/CN102956323A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104538095A (en) * | 2015-01-13 | 2015-04-22 | 青岛华高能源科技有限公司 | Shielding type flexible cable made of graphene compounded rubber materials |
| CN107342136A (en) * | 2017-06-23 | 2017-11-10 | 中天科技海缆有限公司 | A kind of filled type jacket structure cable |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130306 |