CN203850013U - Low smoke and halogen free K3 grade compensation electric cable for 1E type nuclear power station - Google Patents
Low smoke and halogen free K3 grade compensation electric cable for 1E type nuclear power station Download PDFInfo
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- CN203850013U CN203850013U CN201420079294.7U CN201420079294U CN203850013U CN 203850013 U CN203850013 U CN 203850013U CN 201420079294 U CN201420079294 U CN 201420079294U CN 203850013 U CN203850013 U CN 203850013U
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- nuclear power
- low smoke
- power station
- cable
- zero halogen
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Abstract
The utility model discloses a low smoke and halogen free K3 grade compensation electric cable for a 1E type nuclear power station. The wire cable comprises a plurality of core wires, and each core wire is formed by intertwisting two conductors and wrapping a double face copper and plastic combined tape around the two conductors; each conductor comprises a conducting wire arranged at the middle part, an isolating layer which is wrapped outside the conducting wire and an insulating layer; the insulating layer is made of a low smoke and halogen free silicone rubber for nuclear power, flame retarding filling materials are arranged among the plurality of core wires and therefore a cable core which is round in cross section, a winding and wrapping layer is wrapped around the cable core, a single-face embossed aluminium tape longitudinal wrapping layer is wrapped around the winding and wrapping layer, a protection sleeve layer is wrapped around the single-face embossed aluminium tape longitudinal wrapping layer, and the protection sleeve layer is made of the low smoke and halogen free silicone rubber for nuclear power. The low smoke and halogen free K3 grade compensation electric cable for the 1E type nuclear power station is characterized by good shielding property, wide operational temperature range, good stretch-proofing property, good flexibility and capability of being safely used in nuclear power station environment for a long time.
Description
Technical field
The utility model relates to cable technology field, relates 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.
Utility model content
In order to solve the technical problem existing in background technology, the utility model 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 the utility model 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, 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 utility model, 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 utility model, 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 that the utility model proposes.
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 that the utility model proposes.
With reference to Fig. 1, a kind of low smoke and zero halogen 1E type used in nuclear power station K3 level compensating cable the utility model 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 utility model, 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 utility model; but protection range of the present utility model is not limited to this; any be familiar with those skilled in the art the utility model disclose technical scope in; be equal to replacement or changed according to the technical solution of the utility model and utility model design thereof, within all should being encompassed in protection range of the present utility model.
Claims (5)
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, 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420079294.7U CN203850013U (en) | 2014-02-24 | 2014-02-24 | Low smoke and halogen free K3 grade compensation electric cable for 1E type nuclear power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420079294.7U CN203850013U (en) | 2014-02-24 | 2014-02-24 | Low smoke and halogen free K3 grade compensation electric cable for 1E type nuclear power station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203850013U true CN203850013U (en) | 2014-09-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420079294.7U Expired - Fee Related CN203850013U (en) | 2014-02-24 | 2014-02-24 | Low smoke and halogen free K3 grade compensation electric cable for 1E type nuclear power station |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103871584A (en) * | 2014-02-24 | 2014-06-18 | 安徽华海特种电缆集团有限公司 | Low-smoke halogen-free K3-grade compensation cable for 1E type nuclear power station |
-
2014
- 2014-02-24 CN CN201420079294.7U patent/CN203850013U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103871584A (en) * | 2014-02-24 | 2014-06-18 | 安徽华海特种电缆集团有限公司 | Low-smoke halogen-free K3-grade compensation cable for 1E type nuclear power station |
| CN103871584B (en) * | 2014-02-24 | 2016-04-27 | 安徽华海特种电缆集团有限公司 | A kind of low smoke and zero halogen 1E type used in nuclear power station K3 level compensating cable |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140924 Termination date: 20150224 |
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| EXPY | Termination of patent right or utility model |