CN103871584A - Low-smoke halogen-free K3-grade compensation cable for 1E type nuclear power station - Google Patents
Low-smoke halogen-free K3-grade compensation cable for 1E type nuclear power station Download PDFInfo
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- CN103871584A CN103871584A CN201410062708.XA CN201410062708A CN103871584A CN 103871584 A CN103871584 A CN 103871584A CN 201410062708 A CN201410062708 A CN 201410062708A CN 103871584 A CN103871584 A CN 103871584A
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Abstract
The invention discloses a low-smoke halogen-free K3-grade compensation cable for a 1E type nuclear power station. The low-smoke halogen-free K3-grade compensation cable comprises multiple core wires, wherein each core wire is formed by stranding two conductors, and stranding a double-sided copper and plastic composite tape outside each wire core, each conductor comprises a wire positioned in the center, and an isolating layer and an insulating layer which are wrapped outside the wire, each insulating layer is made of low-smoke halogen-free silicone rubber for nuclear power, anti-flaming filling materials are arranged among the multiple core wires for forming a cable wire with a circular section, a wrapping layer wraps the cable wire, a single-sided embossing aluminum tape longitudinal wrapping layer is wrapped outside the wrapping layer, a sheathing layer is wrapped outside the single-sided embossing aluminum tape longitudinal wrapping layer, and the sheathing layer is made of low-smoke halogen-free silicone rubber for nuclear power. The low-smoke halogen-free K3-grade compensation cable for the 1E type nuclear power station provided by the invention is good in shielding performance, wide in working temperature range and good in stretching resistance and flexibility, and can be safely used under the nuclear power station environment in a long time.
Description
Technical field
The present invention relates to cable technology field, relate in particular to a kind of low smoke and zero halogen 1E type used in nuclear power station K3 level compensating cable.
Background technology
Along with industrial automation level improves constantly, the development of instrument and meter, to the temp measuring system of instrument and meter have higher requirement, temperature measuring device instrument environment of living in is comparatively severe, these performance index to compensating cable propose requirements at the higher level.
Generation Ⅲ nuclear power technology is that single heap is arranged two loop units, and 60 years designed lives, main safety system adopts non-active design, is arranged in containment, and containment is double-decker, and skin is prestressed concrete, and internal layer is steel plate structure.For this nuclear power technology, the shielding properties of its supporting compensating cable, operating temperature range, pliability, fail safe etc. all have high requirement.The features such as such cable need in use have that softness, bending radius are little, high temperature resistant, cold-resistant, oil resistant, essential safety and environmental protection.But, also do not have at present one can better meet corresponding requirements cable.
Summary of the invention
In order to solve the technical problem existing in background technology, the present invention proposes a kind of low smoke and zero halogen 1E type used in nuclear power station K3 level compensating cable, its advantages of good shielding performance, operating temperature range are wide, stretch-resistance and pliability good, can under nuclear power plant environment, use safely for a long time.
A kind of low smoke and zero halogen 1E type used in nuclear power station K3 level compensating cable that the present invention proposes, comprises multiple heart yearns; Each heart yearn forms and at its outside coated double-side copper plastic composite strip, each conductor comprises the wire that is positioned at middle part and separator and the insulating barrier that is coated on wire outside by two conductors are stranded, and insulating barrier adopts nuclear power to make with low smoke and zero halogen silicon rubber; Between multiple heart yearns, being provided with fire-retardant packing material formation cross section is circular cable core, at the outside coated lapping layer of described cable core, at the vertical covering of the outside coated one side graining aluminium strip of lapping layer, at the outside coated restrictive coating of the vertical covering of one side graining aluminium strip, described restrictive coating adopts nuclear power to make with low smoke and zero halogen silicon rubber.
Preferably, the pair twist pitch ratio of described two conductors is 11 times～14 times.
Preferably, described wire adopts the many stranded formation of B alloy wire.
Preferably, described separator adopts polyester film to make.
Preferably, described double-side copper plastic composite strip comprises the coated plastic layer of thin copper layer and described thin copper layer two sides in the middle of being positioned at, and its lapping direction direction of lay right with described insulated wire is consistent.
Preferably, the aluminium strip rate of putting up of the vertical covering of described one side graining aluminium strip is 10%, and al zone thickness is 1-3mm.
In the present invention, between wire and insulating barrier, be provided with separator, play the effect that insulating barrier is aging that delays; Every pair of conductor outside is all coated with double-side copper plastic composite strip, the thin copper layer of this double-side copper plastic composite strip plays the effect of separated-shielding, it plays enhancing shield effectiveness with together with total screen of cable, the plastic layer on thin copper layer two sides wraps in conductor opposing connection together simultaneously, the insulating barrier of protection conductor, also prevents screen multipoint earthing; The vertical covering of one side graining aluminium strip replaces the vertical covering of copper strips of prior art, not only reduces material cost, and one side embossing makes aluminium strip have good bending property, guarantees that cable also has good shielding action in the time of bending; Adopt polyester film as separator, have main insulation protection, performance stable for extended periods of time, delays insulating barrier aging simultaneously under the prerequisite that does not affect the total external diameter of cable; Insulating barrier and restrictive coating all adopt nuclear power low smoke and zero halogen silastic material to make, there is the characteristics such as temperature range is wide, soft, wear-resisting, anti-irradiation, simultaneously environment friendly and pollution-free, make cable electric property under nuclear power plant environment stable, ageing resistace is good, long service life.
In preferred version of the present invention, conductor adopts B alloy wire lay configuration, has greatly improved the bending property of cable, and bending radius is less, and cable is more soft, and the small space being adapted in nuclear power plant equipment lays; In heart yearn, two stranded pair twist pitch ratios of conductor are 11-14 times, have strengthened pull resistance and the structural stability of cable, have ensured the pliability requirement of cable simultaneously; The vertical covering of one side embossing aluminium strip that the thickness that adopts aluminium strip to put up rate 10% is 1-3mm, is ensureing, under the prerequisite of cable shield performance, to save aluminium strip consumption, and is alleviating the total weight of cable.
Brief description of the drawings
Fig. 1 is the structural representation of a kind of low smoke and zero halogen 1E type used in nuclear power station K3 level compensating cable of proposing of the present invention.
Embodiment
As shown in Figure 1, Fig. 1 is the structural representation of a kind of low smoke and zero halogen 1E type used in nuclear power station K3 level compensating cable of proposing of the present invention.
With reference to Fig. 1, a kind of low smoke and zero halogen 1E type used in nuclear power station K3 level compensating cable that the present invention proposes, comprises five heart yearns.
Each heart yearn comprises two conductors 1.Each conductor 1 inside comprises the wire 11 that adopts the many stranded formation of B alloy wire, the outside coated polyester film 12 of wire 11, the outside coated insulation layer 13 of polyester film 12.Polyester film 12, as the separator between wire 11 and insulating barrier 13, has the effect of main insulation protection, and its performance stable for extended periods of time delays insulating barrier 13 aging simultaneously under the prerequisite that does not affect the total external diameter of cable.Insulating barrier 13 adopts nuclear power low smoke and zero halogen silicon rubber to make.
By two conductor 1 pair twists, at the outside coated double-side copper plastic composite strip 2 of two conductors 1, form heart yearn.This double-side copper plastic composite strip 2 is consistent with the pair twist direction of two conductors 1, is strapped in tightly together from outside by two conductors 1 of pair twist, and heart yearn internal structure has been carried out to stable processing.
Between five heart yearns, be provided with fire-retardant packing material 3, forming cross section is circular cable core, at the outside coated lapping layer 3 of cable core, and the vertical covering 5 of the outside coated one side graining aluminium strip of lapping layer 3, the thickness of the vertical covering 5 of one side graining aluminium strip is 1mm, and the aluminium strip rate of putting up is 10%.The outside coated restrictive coating 6 of the vertical covering 4 of one side graining aluminium strip, this restrictive coating 6 adopts nuclear power low smoke and zero halogen silicon rubber to make.
In cable of the present invention, the B alloy wire lay configuration of wire 11, has improved the bending property of cable greatly, and bending radius is less, and cable is more soft, and the small space being adapted in nuclear power plant equipment lays.Meanwhile, conductor 1 pair twist pitch ratio is 14 times, in strengthening cable pull resistance and structural stability, ensures the requirement of cable flexibility.The vertical covering 5 of this one side graining aluminium strip has replaced the vertical bag of traditional copper strips, not only save material cost, and one side embossing makes aluminium strip have good bending property.
In addition; under nuclear power plant environment; the double-side copper plastic composite strip 2 of cable comprises the coated plastic layer of thin copper layer and thin copper layer two sides in the middle of being positioned at; thin copper layer plays the effect of separated-shielding; Electromagnetic Interference between shielding heart yearn, the plastic layer on two sides simultaneously, the insulating barrier 13 of protection conductor 1; also prevent thin copper layer multipoint earthing, and plastic layer can be moistureproof and prevent the corrosion of outside chemical product.And the projection of the vertical covering 5 of one side graining aluminium strip makes itself and outside restrictive coating close contact, guarantees in nuclear power plant environment, cable also has good shielding action and moisture effect in the time of bending.Therefore, double-side copper plastic composite strip 2 reaches the double layer screen of cable together with the vertical covering 5 of one side graining aluminium strip, and thin copper layer and aluminium strip play the effect of shielding electromagnetic wave complementation, cable shielding in nuclear power plant environment work is improved, capability of resistance to radiation grow.
Preferably, the nuclear power low smoke and zero halogen silicon rubber that insulating barrier 13 and restrictive coating 6 adopt comprises following component by mass fraction: 55-58 part raw-silastic continuously, 28-33 part precipitated silica, 8-12 part carbon fiber, 48-52 part magnesium hydroxide, 1.8 parts of hydroxy silicon oils, 0.6 part of containing hydrogen silicone oil, 0.5 part of silane coupler, 0.3 part of zinc stearate; Particularly, 55 parts of raw-silastic continuouslies, 30 parts of precipitated silicas, 10 parts of carbon fibers, 50 parts of magnesium hydroxides, 1.8 parts of hydroxy silicon oils, 0.6 part of containing hydrogen silicone oil, 0.5 part of silane coupler, 0.3 part of zinc stearate.Carbon fiber add the stretch-resistance and the heat-resistant fireproof that have strengthened material, and form heat conduction network together with aluminium oxide, make material good heat conduction effect, conductor rapid heat dissipation.This silicon rubber has the characteristics such as high temperature resistant, cold-resistant, soft, wear-resisting, anticorrosion.Meanwhile, its fire resistance is good, low smoke and zero halogen when burning, environmental sound.Therefore under this cable wide temperature range environment, electric property is stable, and ageing resistace is good, and long service life has met tension, the particular/special requirement such as heat-resisting, anticorrosion.
According to the low smoke and zero halogen 1E type used in nuclear power station K3 level computer cable of the present embodiment, after testing, electric pressure is 0.3/0.5kV; The result that withstand voltage test obtains is 1.0/5kV/min; Electric pressure is 0.6/1kV; The result that withstand voltage test obtains is 3.5/5kV/min; It is 90 DEG C that conductor allows maximum operating temperature for a long time; Insulation resistance >=500M Ω .km; Useful life >=60 year; Smoke density >=80%; PH value >=7.3; Conductivity≤10 μ S/mm; Sample of cable is after the thermal ageing test of 150 ± 2 DEG C, 52 days, and the sample after test does not ftracture after 20D bend test; The power-frequency voltage test that 2kV ∕ 5min is carried out in immersion does not puncture.
The above; it is only preferably embodiment of the present invention; but protection scope of the present invention is not limited to this; any be familiar with those skilled in the art the present invention disclose technical scope in; be equal to replacement or changed according to technical scheme of the present invention and inventive concept thereof, within all should being encompassed in protection scope of the present invention.
Claims (6)
1. a low smoke and zero halogen 1E type used in nuclear power station K3 level compensating cable, is characterized in that, comprises multiple heart yearns; Each heart yearn forms and is coated double-side copper plastic composite strip (2) in its outside by two conductors (1) are stranded, each conductor (1) comprises the separator (12) and the insulating barrier (13) that are positioned at the wire (11) at middle part and are coated on wire (11) outside, and insulating barrier (13) adopts nuclear power to make with low smoke and zero halogen silicon rubber; Between multiple heart yearns, being provided with fire-retardant packing material (3) formation cross section is circular cable core, at the outside coated lapping layer (4) of described cable core, at the vertical covering (5) of the outside coated one side graining aluminium strip of lapping layer (4), at the outside coated restrictive coating (6) of the vertical covering (5) of one side graining aluminium strip, described restrictive coating (6) adopts nuclear power to make with low smoke and zero halogen silicon rubber.
2. low smoke and zero halogen 1E type used in nuclear power station K3 level compensating cable according to claim 1, is characterized in that, the pair twist pitch ratio of described two conductors (1) is 11 times～14 times.
3. low smoke and zero halogen 1E type used in nuclear power station K3 level compensating cable according to claim 1, is characterized in that, described wire (11) adopts the many stranded formation of B alloy wire.
4. low smoke and zero halogen 1E type used in nuclear power station K3 level compensating cable according to claim 1, is characterized in that, described separator (12) adopts polyester film to make.
5. low smoke and zero halogen 1E type used in nuclear power station K3 level compensating cable according to claim 1, it is characterized in that, described double-side copper plastic composite strip (2) comprises the coated plastic layer of thin copper layer and described thin copper layer two sides in the middle of being positioned at, and its lapping direction direction of lay right with described insulated wire is consistent.
6. low smoke and zero halogen 1E type used in nuclear power station K3 level compensating cable according to claim 1, is characterized in that, the aluminium strip rate of putting up of the vertical covering (5) of described one side graining aluminium strip is 10%, and al zone thickness is 1-3mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410062708.XA CN103871584B (en) | 2014-02-24 | 2014-02-24 | A kind of low smoke and zero halogen 1E type used in nuclear power station K3 level compensating cable |
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| CN201410062708.XA CN103871584B (en) | 2014-02-24 | 2014-02-24 | A kind of low smoke and zero halogen 1E type used in nuclear power station K3 level compensating cable |
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| CN103871584A true CN103871584A (en) | 2014-06-18 |
| CN103871584B CN103871584B (en) | 2016-04-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104392783A (en) * | 2014-12-02 | 2015-03-04 | 安徽渡江电缆集团有限公司 | Compact anti-extrusion cable |
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| JPH0574634A (en) * | 1991-09-13 | 1993-03-26 | Hiromichi Koshiishi | Transformer |
| CN201256016Y (en) * | 2008-09-18 | 2009-06-10 | 常州市新东方电缆有限公司 | Fire-retarding electric cable for 1E stage K3 class nuclear power plant |
| CN201725621U (en) * | 2010-07-14 | 2011-01-26 | 开开电缆科技有限公司 | Heat-resisting electric cable of intrinsically safe explosion-proof instrument |
| CN201804592U (en) * | 2010-05-24 | 2011-04-20 | 上海赛克力特种电缆有限公司 | Polyether-ether-ketone insulating cable (Class K3, Grade1E) with silicon gel sheath |
| CN202003715U (en) * | 2011-03-24 | 2011-10-05 | 安徽世纪华茂电缆集团有限公司 | Compensation cable used for silicon rubber insulated intrinsic safety system |
| CN202473310U (en) * | 2012-01-11 | 2012-10-03 | 安徽五洲特种电缆集团有限公司 | Environment-friendly type intrinsic safe compensation cable for high temperature resistant cold resistant oil resistant temperature measurement system |
| CN202694909U (en) * | 2012-05-24 | 2013-01-23 | 安徽复兴电缆集团有限公司 | Compensating cable for intrinsic safety system |
| CN102956293A (en) * | 2011-08-23 | 2013-03-06 | 江苏上上电缆集团有限公司 | Compensation cable for nuclear power plant |
| CN203850013U (en) * | 2014-02-24 | 2014-09-24 | 安徽华海特种电缆集团有限公司 | Low smoke and halogen free K3 grade compensation electric cable for 1E type nuclear power station |
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2014
- 2014-02-24 CN CN201410062708.XA patent/CN103871584B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0574634A (en) * | 1991-09-13 | 1993-03-26 | Hiromichi Koshiishi | Transformer |
| CN201256016Y (en) * | 2008-09-18 | 2009-06-10 | 常州市新东方电缆有限公司 | Fire-retarding electric cable for 1E stage K3 class nuclear power plant |
| CN201804592U (en) * | 2010-05-24 | 2011-04-20 | 上海赛克力特种电缆有限公司 | Polyether-ether-ketone insulating cable (Class K3, Grade1E) with silicon gel sheath |
| CN201725621U (en) * | 2010-07-14 | 2011-01-26 | 开开电缆科技有限公司 | Heat-resisting electric cable of intrinsically safe explosion-proof instrument |
| CN202003715U (en) * | 2011-03-24 | 2011-10-05 | 安徽世纪华茂电缆集团有限公司 | Compensation cable used for silicon rubber insulated intrinsic safety system |
| CN102956293A (en) * | 2011-08-23 | 2013-03-06 | 江苏上上电缆集团有限公司 | Compensation cable for nuclear power plant |
| CN202473310U (en) * | 2012-01-11 | 2012-10-03 | 安徽五洲特种电缆集团有限公司 | Environment-friendly type intrinsic safe compensation cable for high temperature resistant cold resistant oil resistant temperature measurement system |
| CN202694909U (en) * | 2012-05-24 | 2013-01-23 | 安徽复兴电缆集团有限公司 | Compensating cable for intrinsic safety system |
| CN203850013U (en) * | 2014-02-24 | 2014-09-24 | 安徽华海特种电缆集团有限公司 | Low smoke and halogen free K3 grade compensation electric cable for 1E type nuclear power station |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104392783A (en) * | 2014-12-02 | 2015-03-04 | 安徽渡江电缆集团有限公司 | Compact anti-extrusion cable |
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| CN103871584B (en) | 2016-04-27 |
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