CN102956315A - Control cable for nuclear power station - Google Patents
Control cable for nuclear power station Download PDFInfo
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- CN102956315A CN102956315A CN2011102428710A CN201110242871A CN102956315A CN 102956315 A CN102956315 A CN 102956315A CN 2011102428710 A CN2011102428710 A CN 2011102428710A CN 201110242871 A CN201110242871 A CN 201110242871A CN 102956315 A CN102956315 A CN 102956315A
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- nuclear power
- power station
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- control cable
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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 control cable, in particular to a control cable for a nuclear power station. According to the technical scheme, the control cable for the nuclear power station comprises a plurality of core wires (3) composed of conductors (1) and insulation layers (2), the insulation layers (2) are extruded on the conductors (1), the core wires (3) arrayed on the circumference and packing are stranded into cable cores (5), a wrapping layer (6), a copper-plastic composite belt (7), a copper wire braided layer (8) and a sheath (9) are arranged outside the cable cores (5) sequentially, the wrapping layer (6) wraps the cable cores (5), the copper-plastic composite belt (7) wraps outside the wrapping layer (6), and the sheath (9) is extruded outside the copper wire braided layer (8). 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 after DBA.
Description
Technical field
The present invention relates to a kind of control cables, particularly a kind of control cable for nuclear power station is applicable to the cable of rated voltage 0.6/1kV, and it 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, 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 control cables 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.
Chinese patent notification number CN201820470U openly examines a grade cable, comprise some mutual stranded copper conductors and halogen-free polyolefin sheath, every copper conductor outer surface extrudes the cable core of crosslinked polyetylene insulated layer and low smoke, zero halogen polyolefin insulation layer formation successively, every cable core all is provided with the first oxygen barrier layer outward, all cable cores are surrounded by the second oxygen barrier layer outward jointly, be provided with inserts between the first oxygen barrier layer that every cable core is outer and the second oxygen barrier layer, described sheath is arranged on the second oxygen barrier layer outside.It is mainly not enough: the first oxygen barrier layer and the second oxygen barrier layer all adopt low smoke, zero halogen polyolefin twining package tape and copper strips twining package tape, and capability of resistance to radiation is general, and the life-span is general, can't reply accident hot environment.
Chinese patent notification number 2888606Y discloses a kind of cable for nuclear power station, it comprises heart yearn, lapping layer and the sheath etc. of existing cable for nuclear power station structure, wherein heart yearn is to be made of the outer extruded insulation layer of conductor, insulating barrier adopts two-layer composite, its internal layer is crosslinked polyethylene insulation material, and its skin is the halogen-free and low-smoke flame-retardant polyolefin material.It is mainly not enough: unshielded layer, and capability of resistance to radiation is general, and the life-span 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 control cable for nuclear power station 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 control cable for nuclear power station, comprise the heart yearn that is consisted of by conductor and insulating barrier, insulating barrier is extruded on the conductor, it is characterized in that: heart yearn and the filling of described many circumferential arrangement are twisted into cable core, and cable core is provided with lapping layer, compound copper-plastics band, proof copper-wire braided layer and sheath outward successively, the wrapped cable core of lapping layer, the outer wrapped compound copper-plastics band of lapping layer, the proof copper-wire braided layer extrudes sheath outward.
Further, described conductor is the tinned copper wire conductor after stranded.
Further, described filling is low-smoke halogen-free flame retardant filler strip.
Further, described proof copper-wire braided layer is tincopper fuse wire braided armor.
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) heart yearn of many circumferential arrangement and filling are twisted into cable core, and be easy to process, and stranded cable core is firm.Every conductor tyre insulating barrier, the insulating properties of raising cable.Compound copper-plastics band and proof copper-wire braided layer improve the shielding of whole cable, capability of resistance to radiation grow.
(2) the tinned copper wire conductor after stranded improves the electric conductivity of conductor, makes conductor soft and not fragile.
(3) low-smoke halogen-free flame retardant filler strip, low-smoke halogen-free flame-retardant isolating layer and low-smoke halogen-free flame-retardant sheath are so that cable low-smoke non-halogen flame-retardant performance is better.
(4) tincopper fuse wire braided armor, anti-oxidant, the life-span is longer, and is more not fragile, prevent from insulating and the aging ability of sheath strong, the capability of resistance to radiation grow.
(5) insulating barrier of vapor crosslinking makes the insulating properties of cable stronger.
(6) 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.
(7) 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.
The submergence performance that the present invention has behind excellent anti-long term heat ageing performance, 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, insulating barrier, 3, heart yearn, 4, fill, 5, cable core, 6, lapping layer, 7, compound copper-plastics band, 8, proof copper-wire braided layer, 9, 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 control cable for nuclear power station comprises heart yearn 3 and the filling 4 stranded cable cores that consist of 5 by many circumferential arrangement.Every heart yearn 3 is made of conductor 1 and insulating barrier 2, and insulating barrier 2 is extruded on the conductor 1.Cable core 5 outer lapping layer 6, compound copper-plastics band 7, proof copper-wire braided layer 8 and the sheaths 9 of being provided with successively.Lapping layer 6 wrapped cable cores 5, lapping layer 6 outer wrapped compound copper-plastics bands 7, the proof copper-wire braided layer 8 outer sheath 9 that extrudes.
Wherein: conductor 1 adopts the tinned copper wire lay configuration.Fill 4 preferred low-smoke halogen-free flame retardant filler strips.Proof copper-wire braided layer 8 preferred tincopper fuse wire braided armor.Insulating barrier 2 preferred low flue unhalogen flame-retarded ethylpropyl rubber layers, it adopts vapor crosslinking.Sheath 9 preferred low-smoke non-halogen flame-retardant thermoset rubber sheaths, it adopts vapor crosslinking.
Many heart yearns 3 and the filling 4 of circumferential arrangement are stranded, and it is easy to process, and stranded cable core is firm.
Compound copper-plastics band 7 and proof copper-wire braided layer 8 improve the shielding of cable, capability of resistance to radiation grow.Proof copper-wire braided layer 8 preferred tincopper fuse wire braided armor, anti-oxidant, the life-span is longer, and is more not fragile, prevent from insulating and the aging ability of sheath strong, the capability of resistance to radiation grow.
Adopt the conductor of tinned copper wire lay configuration, improve the electric conductivity of conductor, make conductor soft and not fragile.
Low-smoke halogen-free flame retardant filler strip improves cable low-smoke non-halogen flame-retardant performance.
After adopting such scheme, reach more than 60 years the useful life of control cable for nuclear power station, and radiation resistance 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 (6)
1. control cable for nuclear power station, comprise the heart yearn (3) that is consisted of by conductor (1) and insulating barrier (2), insulating barrier (2) is extruded on the conductor (1), it is characterized in that: the heart yearn of described many circumferential arrangement (3) and filling (4) are twisted into cable core (5), outer lapping layer (6), compound copper-plastics band (7), proof copper-wire braided layer (8) and the sheath (9) of being provided with successively of cable core (5), the wrapped cable core of lapping layer (6) (5), the outer wrapped compound copper-plastics band (7) of lapping layer (6), the outer sheath (9) that extrudes of proof copper-wire braided layer (8).
2. control cable for nuclear power station according to claim 1 is characterized in that: described conductor (1) is the tinned copper wire conductor after stranded.
3. control cable for nuclear power station according to claim 1, it is characterized in that: described filling (4) is low-smoke halogen-free flame retardant filler strip.
4. control cable for nuclear power station according to claim 1, it is characterized in that: described proof copper-wire braided layer (8) is tincopper fuse wire braided armor.
5. control cable for nuclear power station according to claim 1, it is characterized in that: described insulating barrier (2) is the low flue unhalogen flame-retarded ethylpropyl rubber layer of vapor crosslinking.
6. control cable for nuclear power station according to claim 1, it is characterized in that: described sheath (9) is the low-smoke non-halogen flame-retardant thermoset rubber sheath of vapor crosslinking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102428710A CN102956315A (en) | 2011-08-23 | 2011-08-23 | Control cable for nuclear power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102428710A CN102956315A (en) | 2011-08-23 | 2011-08-23 | Control cable for nuclear power station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102956315A true CN102956315A (en) | 2013-03-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102428710A Pending CN102956315A (en) | 2011-08-23 | 2011-08-23 | Control cable for nuclear power station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102956315A (en) |
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2011
- 2011-08-23 CN CN2011102428710A patent/CN102956315A/en active Pending
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| Date | Code | Title | Description |
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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 |