CN204029456U - The non-active nuclear power station mild environment 1E level power cable of three generations - Google Patents
The non-active nuclear power station mild environment 1E level power cable of three generations Download PDFInfo
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- CN204029456U CN204029456U CN201420484927.2U CN201420484927U CN204029456U CN 204029456 U CN204029456 U CN 204029456U CN 201420484927 U CN201420484927 U CN 201420484927U CN 204029456 U CN204029456 U CN 204029456U
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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
Abstract
The utility model provides a kind of three generations non-active nuclear power station mild environment 1E level power cable.The non-active nuclear power station mild environment 1E level power cable of a kind of three generations, comprises a plurality of core; Core comprises one with upper conductor, and every root conductor outer wall is surrounded with the first band, extrudes inner insulating layer and external insulation layer and be surrounded with the second band outside the first band; Core and more than one fill out core and are twisted into cable core; Cable core is disposed with belting layer, packed layer, internal shield, outer shielding layer, lapping layer and restrictive coating from the inside to the outside.
Description
Technical field
The utility model relates to a kind of cable, particularly relates to the non-active nuclear power station mild environment 1E level power cable of a kind of three generations.
Background technology
21st century, the growth of developing country's demographic and economic will bring the huge increase of energy demand, and meanwhile, the fuel provided presently more than 80% electric power also progressively exhausts, and the use of environmental requirement to fuel creates very large restriction.From reserved resource, the reliable supply of environmental protect quality and the energy, nuclear energy possesses obvious advantage.
Under the environment for use that nuclear power station is special, the accessory cables as nuclear power station must have that thermal stability is strong, chemically stable good, radiation resistance is excellent, ageing-resistant performance is excellent, moistureproof, corrosion-resistant, the feature such as LSOH anti-flaming, long service life.Current Domestic nuclear power cable high-end product dependence on import, only has portioned product to domesticize.
Utility model content
The utility model provides a kind of three generations non-active nuclear power station mild environment 1E level power cable, and 1E level power cable has the features such as LSOH anti-flaming, low toxicity, corrosion-resistant, excellent electric property, stronger radiation resistance and long service life.
For achieving the above object, the utility model adopts following technical scheme:
The non-active nuclear power station mild environment 1E level power cable of a kind of three generations, comprises a plurality of core; Core comprises one with upper conductor, and every root conductor outer wall is surrounded with the first band, extrudes inner insulating layer and external insulation layer and be surrounded with the second band outside the first band; Core and more than one fill out core and are twisted into cable core; Cable core is disposed with belting layer, packed layer, internal shield, outer shielding layer, lapping layer and restrictive coating from the inside to the outside.
Further, fill out core and comprise strengthening core, extrude obturator outside strengthening core, strengthening core is aramid yarn, and obturator is that low smoke, zero halogen cross-linking radiation polyolefin forms.
Further, core is three, and the axial axis of core is triangularly arranged; Filling out core is three, and the axial axis of filling out core is del layout; Fill out core and core is mutual circumscribed stranded
Further, to be that tinned copper wire is stranded form conductor.
Further, inner insulating layer is formed by low smoke, zero halogen IXPE, and external insulation layer low smoke, zero halogen cross-linking radiation polyolefin forms.
Further, internal shield is tincopper fuse wire braided armor, outer shielding layer is the compound copper-plastics band layer of vertical bag.
Further, packed layer adopts polyolefin oxygen barrier packing material.
Further, the first band and the second band are mylar tape, and belting layer forms by LSOH anti-flaming film strip is wrapped, and to be that nonwoven fabrics is wrapped form lapping layer.
The beneficial effects of the utility model are:
(1) the utility model compact conformation, good stability, restrictive coating adopts low smoke, zero halogen, radioresistance cross-linked polyolefin, radiation-resistant property and good mechanical performance, cable core and obturator adopt belting layer wrapped, the melt temperature of obturator and belting layer determines working temperature higher than cable maximum amount, whole cable intensity is good, and cable roundness is good, is applicable to compared with high ambient temperature and the bad operational environment that dispels the heat;
(2) conductor outer wall adopts inside and outside double hyer insulation, and improve cable insulation, ensure that reliable electrical property, use procedure is more stable;
(3) the outer wrapped one deck mylar tape of core, mylar tape this to having resistance to elevated temperatures, when cable carries out simulation accelerated heat ageing, effectively can prevent the adhesion of core; After the wrapped mylar tape of core, the cable electrical property caused because of core adhesion can be avoided to decline, also effectively can improve cable life, 60 year useful life of cable can be ensured from configuration aspects further;
(4) interior outer shielding layer enhances power cable antijamming capability to external world and the stability of Signal transmissions, capability of resistance to radiation strengthens, tincopper fuse wire braided armor shields, add the corrosion resistance of power cable, improve the useful life of power cable, guarantee that power cable has very strong mechanical performance and anti-electromagnetic interference capability;
(5) to be that tinned copper wire is stranded form conductor, and conductor conducts electricity very well, and conductor softness is not fragile;
(6) low smoke, zero halogen IXPE inner insulating layer is high temperature resistant and aging, low smoke, zero halogen environmental protection, protection core is injury-free, extend power cable useful life, and low smoke, zero halogen cross-linking radiation polyolefin external insulation layer has excellent mechanical performance, radiation-resistant property;
(7) adopt the low cigarette polyolefin jacket material of irradiation crosslinking halogen-free, material forms thermosets after cross-linking radiation, ensures the useful life of power cable and the radiance of gamma ray resistant;
(8) external insulation layer is through double-layer coextrusion processes, and efficiency is high, energy consumption is low, avoid aliquation between restrictive coating and insulating barrier, wrinkling, come unstuck and core and the not tight defect of insulated combination;
(9) in production stage, inner insulating layer and external insulation layer and restrictive coating adopt low smoke, zero halogen cross-linking radiation, not with contact with moisture, and then decrease power cable and mix because of moisture the probability causing electrical performance issues; By high-power electron beam, modification is carried out to inner insulating layer and external insulation layer and jacket layer material, high-energy ray destroys and makes original linear c h bond, then molecular structure reconfigures again, form random network molecular structure, improve mechanical and physical performance and the heat resistance of material, temperature resistant grade rises to 90 DEG C by 70 DEG C, electrical property is also increased.
The utility model power cable reaches 60 years with the life-span, and simultaneously power cable has Halogen, low cigarette, fire-retardant, low toxicity and stronger radiation resistance.
Accompanying drawing explanation
Fig. 1 is the structural representation that the utility model selectes embodiment 1.
Wherein, 1. conductor, 2. the first band, 3. inner insulating layer, 4. external insulation layer, 5. the second band, 6. belting layer, 7. packed layer, 8. internal shield, 9. outer shielding layer, 10. lapping layer, 11. restrictive coatings, 12. fill out core.
Embodiment
First, it should be noted that, what this section described is only used for implementing preferred implementation of the present utility model, under the prerequisite not changing principle of the present utility model, those skilled in the art technical scheme described here can make remodeling, and these remodeling also will fall in scope of the present utility model.
Embodiment 1
With reference to accompanying drawing 1, the non-active nuclear power station mild environment 1E level power cable of three generations, comprise three cores and three fill out core 12, and the axial axis of core is triangularly arranged; Core comprises one with upper conductor 1, and every root conductor 1 outer wall is surrounded with and extrudes inner insulating layer 3 and external insulation layer 4 outside the first band 2, first band 2 and be surrounded with the second band 5; Filling out core 12 is three, and the axial axis of filling out core 12 is del layout; Fill out core 12 and be twisted into cable core with core is mutually circumscribed; Cable core is disposed with belting layer 6, packed layer 7, internal shield 8, outer shielding layer 9, lapping layer 10 and restrictive coating 11 from the inside to the outside.
In the present embodiment, fill out core and comprise strengthening core, extrude obturator outside strengthening core, strengthening core is aramid yarn, and obturator is that low smoke, zero halogen cross-linking radiation polyolefin forms.
In the present embodiment, conductor 1 forms for tinned copper wire is stranded, and conductor 1 conducts electricity very well, and conductor 1 softness is not fragile.
In the present embodiment, inner insulating layer 3 is formed by low smoke, zero halogen IXPE, high temperature resistant and aging, low smoke, zero halogen environmental protection, and protection core is injury-free, extend power cable useful life; External insulation layer 4 low smoke, zero halogen cross-linking radiation polyolefin forms, and makes power cable have very good mechanical properties, radiation-resistant property.
In the present embodiment, internal shield 8 is tincopper fuse wire braided armor, and outer shielding layer 9 is the compound copper-plastics band layer of vertical bag.Compound copper-plastics band layer, shield effectiveness is high, and vertical bag shielding construction can play the maximum work use of compound copper-plastics band, enhances power cable antijamming capability to external world and the stability of Signal transmissions, makes power cable shield performance more, and capability of resistance to radiation strengthens; Tinned copper wire braiding is non-directional, and shield effectiveness is good, adds the corrosion resistance of power cable, improves the useful life of power cable.
In the present embodiment, restrictive coating 11 is formed by low smoke, zero halogen cross-linking radiation polyolefin, polyolefin has that anti-cracking performance is excellent, thermal contraction is little, easy processing, taste are little, the feature such as LSOH anti-flaming and long service life, make power cable resistance to y irradiation behaviour strong, ensure that power cable reaches 60 years useful life.
In the present embodiment, first band 2 and the second band 5 are non-hygroscopic mylar tape, belting layer 6 forms by non-hygroscopic LSOH anti-flaming film strip is wrapped, lapping layer 10 forms for nonwoven fabrics is wrapped, non-hygroscopic mylar tape performance can stable for extended periods of time, the insulation resistance of effective guarantee product, and can barrier metal ion to external migration, be conducive to the Heat Ageing delaying restrictive coating 11 material; Belting layer 6 forms by non-hygroscopic LSOH anti-flaming film strip is wrapped, can not melting under power cable maximum amount determines working temperature; Lapping layer 10 forms for nonwoven fabrics is wrapped, prevents cable core loose or distortion when bending, to guarantee that the rounding of cable core is with tight.
In the present embodiment, packed layer adopts polyolefin oxygen barrier packing material, ensure that the structure rounding of power cable, and has good low cigarette, fire resistance.
A production method for described 1E level power cable, comprises the following steps: and conductor strand-conductor is wrapped-inner insulating layer and external insulation layer extrude-inner insulating layer and the external insulation layer cross-linking radiation process-wrapped-core stranding-packed layer that insulate extrude-shield-and restrictive coating extrudes-restrictive coating cross-linking radiation process; Inner insulating layer and external insulation layer Thickness Ratio are 1:3, interior insulating exruded employing common screw, and external insulation is extruded and adopted low compression ratio screw rod, before insulation extrusion, and 10mm
290 DEG C ~ 100 DEG C should be preheating to lower conductor, insulating material should dry 1 ~ 2 hour at 60 ± 5 DEG C, extrude in operation, inner insulating layer temperature controls between 140 ~ 185 DEG C, external insulation layer temperature controls between 90 ~ 175 DEG C, core adopts segmented cooling, first paragraph cooling water temperature 60 DEG C ~ 70 DEG C, and second segment cooling water temperature is normal temperature; Restrictive coating adopts low compression ratio screw rod to extrude with half tubular molding tool extruding on unit, 60 ± 5 DEG C of preheatings 1 ~ 2 hour answered by material before extruding, extrude temperature control 90-155 DEG C in operation, extrude the cooling of rear employing segmented, first paragraph cooling water temperature 60 DEG C ~ 70 DEG C, second segment cooling water temperature is normal temperature; Restrictive coating adopts half to squeeze tubular type and extrudes, and extrudes the cooling of rear employing segmented, and first paragraph cooling water temperature 60 DEG C ~ 70 DEG C, second segment cooling water temperature is normal temperature.
In the present embodiment, the hot elongation 50%-100% of inner insulating layer and external insulation layer, restrictive coating.
Substep illustrates each step below:
conductor strand:
Conductor is stranded tin-coated copper material, can require, adjusts plied monofilament diameter and radical according to pliability, ensures that conductor structure is stablized.
conductor is wrapped:
conductor is wrapped, and to select the band of corresponding width to carry out according to different size conductor diameter wrapped, and the wrapped rate of putting up is not less than 50%.
fill out core
Also include in cable core and fill out core, filling out core is three, and the axial axis of filling out core is del layout; Fill out core and core is mutual circumscribed stranded.Internal layer selects aramid yarn to do strengthening core, and skin selects low smoke, zero halogen cross-linking radiation polyolefin, and combination of inner and outside composition fills out core.
inner insulating layer and external insulation layer extrude:
Inner insulating layer and external insulation layer adopt double-layer coextrusion.Inner insulating layer and external insulation layer Thickness Ratio are 1:3, interior insulating exruded employing common screw, and external insulation is extruded and adopted low compression ratio screw rod, before insulation extrusion, and 10mm
2should be preheating to 90 ~ 100 DEG C with lower conductor, insulating material should dry 1 ~ 2 hour at 60 ± 5 DEG C, and core adopts segmented cooling, first paragraph cooling water temperature 60 DEG C ~ 70 DEG C, and second segment cooling water temperature is normal temperature; Restrictive coating 8 adopts low compression ratio screw rod extruding on unit to go out with half tubular molding tool, and 60 ± 5 DEG C of preheatings 1 ~ 2 hour answered by material before extruding, and extrude the cooling of rear employing segmented, first paragraph cooling water temperature 60 DEG C ~ 70 DEG C, second segment cooling water temperature is normal temperature.Double-layer coextrusion is realized by time processing, the link repeatedly regulating core bias is not needed in production process, ensure that insulation thickness is accurate, herewith once extrude can avoid due to extrude for twice separately carry out time the inner insulating layer surface problem being polluted and damage, inner insulating layer and external insulation layer are combined tight, ensure that the concentricity of inner insulating layer and external insulation layer, improve the quality of products, reduce processing intensity, compactness between double-decker, makes the electric property of power cable have more advantage.
inner insulating layer and the process of external insulation layer cross-linking radiation:
Inner insulating layer is formed by low smoke, zero halogen IXPE, high temperature resistant, anti-aging, and protection core is injury-free; External insulation layer low smoke, zero halogen cross-linking radiation polyolefin forms, and has LSOH anti-flaming environmental protection characteristic; Inner insulating layer and the hot elongation 50%-100% of external insulation layer.
insulate wrapped:
Adhesion during for preventing insulation accelerated heat ageing, the outer wrapped one deck non-hygroscopic mylar tape of insulation, the rate of putting up controls at 15%-20%.
core stranding:
Stranding fills out core filling and the wrapped formation belting layer of non-hygroscopic LSOH anti-flaming film strip with extruding cast, and band puts up rate should not be less than 30%.Core and fill out core stranding lay ratio 15-20, ensures power cable roundness.
shielding:
Shielding adopts composite barrier structure; Internal shield 8 is tincopper fuse wire braided armor, and outer shielding layer 9 is the compound copper-plastics band layer of vertical bag, and compound copper-plastics band is indulged bag shielding should produce with tinned copper wire braid shielded simultaneously, ensures fail safe when power cable uses.
restrictive coating extrudes:
Adopt low compression ratio screw rod to extrude with half tubular molding tool extruding on unit, 60 ± 5 DEG C of preheatings 1 ~ 2 hour answered by material before extruding, extrude rear employing segmented and cool, first paragraph cooling water temperature 60 DEG C ~ 70 DEG C, second segment cooling water temperature is normal temperature.
the process of restrictive coating cross-linking radiation:
Restrictive coating is formed by low smoke, zero halogen cross-linking radiation polyolefin, hot elongation 50%-100%.
The test of the utility model power cable has following performance:
。
It should be noted last that, above embodiment is only in order to illustrate the technical solution of the utility model and unrestricted, although be described in detail the utility model with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify to the technical solution of the utility model or equivalent replacement, and not departing from the spirit and scope of technical solutions of the utility model, it all should be encompassed in the middle of right of the present utility model.
Claims (9)
1. the non-active nuclear power station mild environment 1E level power cable of three generations, is characterized in that: comprise a plurality of core; Core comprises one with upper conductor, and every root conductor outer wall is surrounded with the first band, extrudes inner insulating layer and external insulation layer and be surrounded with the second band outside the first band; Core and more than one fill out core and are twisted into cable core; Cable core is disposed with belting layer, packed layer, internal shield, outer shielding layer, lapping layer and restrictive coating from the inside to the outside.
2. 1E level power cable according to claim 1, is characterized in that: fill out core and comprise strengthening core, extrude obturator outside strengthening core, and strengthening core is aramid yarn, and obturator is that low smoke, zero halogen cross-linking radiation polyolefin forms.
3. 1E level power cable according to claim 1, is characterized in that: core is three, and the axial axis of core is triangularly arranged; Filling out core is three, and the axial axis of filling out core is del layout; Fill out core and core is mutual circumscribed stranded.
4. 1E level power cable according to claim 1, is characterized in that: to be that tinned copper wire is stranded form conductor.
5. 1E level power cable according to claim 1, is characterized in that: inner insulating layer is formed by low smoke, zero halogen IXPE, and external insulation layer low smoke, zero halogen cross-linking radiation polyolefin forms.
6. 1E level power cable according to claim 1, is characterized in that: internal shield is tincopper fuse wire braided armor, and outer shielding layer is the compound copper-plastics band layer of vertical bag.
7. 1E level power cable according to claim 1, is characterized in that: packed layer adopts polyolefin oxygen barrier packing material.
8. 1E level power cable according to claim 1, is characterized in that: restrictive coating is formed by low smoke, zero halogen cross-linking radiation polyolefin.
9. 1E level power cable according to claim 1, it is characterized in that: the first band and the second band are mylar tape, belting layer forms by LSOH anti-flaming film strip is wrapped, and to be that nonwoven fabrics is wrapped form lapping layer.
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| CN201420484927.2U CN204029456U (en) | 2014-08-26 | 2014-08-26 | The non-active nuclear power station mild environment 1E level power cable of three generations |
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| CN201420484927.2U CN204029456U (en) | 2014-08-26 | 2014-08-26 | The non-active nuclear power station mild environment 1E level power cable of three generations |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104183331A (en) * | 2014-08-26 | 2014-12-03 | 山东华凌电缆有限公司 | IE-grade power cable for third-generation passive nuclear power plant gentle environment and production method |
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2014
- 2014-08-26 CN CN201420484927.2U patent/CN204029456U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104183331A (en) * | 2014-08-26 | 2014-12-03 | 山东华凌电缆有限公司 | IE-grade power cable for third-generation passive nuclear power plant gentle environment and production method |
| CN104183331B (en) * | 2014-08-26 | 2016-06-22 | 山东华凌电缆有限公司 | The gentle environment 1E level power cable of three generations's passive nuclear power station and production method |
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