CN102646468A - Electromagnetic double-shielded low-noise radio-frequency cable used for nuclear power station - Google Patents
Electromagnetic double-shielded low-noise radio-frequency cable used for nuclear power station Download PDFInfo
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- CN102646468A CN102646468A CN2012101240785A CN201210124078A CN102646468A CN 102646468 A CN102646468 A CN 102646468A CN 2012101240785 A CN2012101240785 A CN 2012101240785A CN 201210124078 A CN201210124078 A CN 201210124078A CN 102646468 A CN102646468 A CN 102646468A
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Abstract
The invention discloses an electromagnetic double-shielded low-noise radio-frequency cable used for a nuclear power station, wherein an inner conductor is arranged in the center of the cable; an insulating layer, a semi-conducting layer, an outer conductor, an oxygen-insulating inner sheath, an electromagnetic shielding layer, a flame retardant layer and an outer sheath are sequentially coated at the outer layer of the inner conductor; and the oxygen-insulating inner sheath and the outer sheath are both formed by extruding polyolefin. The cable can completely meet the requirements of the nuclear power station or other conditions with higher requirements on the using environment and the cable performance. The cable has the characteristics that the attenuation is low, the noise is low, the anti-electromagnetic interference performance is high, the flame retardant performance can reach the flame retardant level A, halogen is not contained, the smoke is less, the environment is protected, the radiation resistance and the heat resistance are good, etc.
Description
Technical field:
The present invention relates to a kind of cable, be specifically related to used in nuclear power station electromagnetism double shield low noise radio frequency cable.
Background technology:
The used in nuclear power station cable mainly uses in the harsh occasion of environmental condition, and security reliability is had relatively high expectations, and is used to measure or the transmission of high-frequency signal.Cable is useful in adverse circumstances and uses, and receive the restriction of aspects such as environment for use, mechanical and physical performance.So seek that a kind of radio frequency cable performance than prior art is better, the used in nuclear power station electromagnetism double shield mininoise cable of safety and reliability.Should possess that insulation good heat resistance, radiation resistance are high, resistance to cracking is good, ageing resistance is good, long service life; Because of cable uses at the enclosure space that has personnel to work, so the nonmetallic materials that require cable itself to form structure have safety and environmental protection character, low smoke, zero halogen, high flame retardant characteristic; Owing to guarantee security reliability in the cable use, consider the influence of special machine physical conditions such as earthquake, vibration, flexion torsion, cable should possess higher mechanical strength, counter-bending twisting property; Measuring-signal or other high-frequency signal of transmission belong to weak electric signal when using because of cable; The interference that is vulnerable to outside strong-electromagnetic field reaches itself because the static noise that vibrations or cable internal friction are produced disturbs, and cable should possess higher anti-capability of electromagnetic shielding and low-noise performance.So seek the novel used in nuclear power station electromagnetism double shield low noise radio frequency cable of function admirables such as a kind of high flame retardant, low smoke, zero halogen safety and environmental protection, low noise, anti-electromagnetic interference.
Summary of the invention:
For overcoming the defective of prior art, the object of the present invention is to provide a kind of used in nuclear power station electromagnetism double shield low noise radio frequency cable, can satisfy the condition that nuclear power station or other are had relatively high expectations to environment for use and cable performance fully.Cable has possessed characteristics such as low decay, little, the anti-electromagnetic interference performance height of noise, fire resistance Gao Keda category-A flame retardant level, low smoke, zero halogen environmental protection, radiation hardness, good heat resistance.
Technical solution problem of the present invention adopts following technical scheme:
Used in nuclear power station electromagnetism double shield low noise radio frequency cable, cable center is provided with inner wire, and the skin of said inner wire is coated with insulating barrier, semi-conductive layer, outer conductor, oxygen barrier inner sheath, electro-magnetic screen layer, flame-retardant layer and oversheath successively; Said oxygen barrier inner sheath and said oversheath all adopt polyolefin to extrude formation.
Said inner wire constitutes by many silver-gilt copper wires are stranded.
Said insulating barrier adopts the IXPE material, and material molecule is a space network.
Said semi-conductive layer adopts crosslinkable type polyvinyl semiconductor.
Said outer conductor adopts the copper wire braiding to form.
Said oxygen barrier inner sheath adopts low smoke, zero halogen high flame retardant polyolefine material, and oxygen index reaches more than 42%, and is not halogen-containing.
Said electro-magnetic screen layer adopts zinc-plated pure iron silk braiding to form.
Said flame-retardant layer adopts the inorfil strap to form through wrapped.
Compared with present technology, beneficial effect of the present invention is embodied in:
The first, insulating layer material has adopted the IXPE material, and it is molecule crosslinked behind high-energy ray irradiation to insulate, and thermal endurance improves, ageing resistance is good, the raising in useful life.Stress crack resistance performance height, intensity and reliability height, low smoke, zero halogen safety and environmental protection, radiation resistance height.The second, the semi-conductive layer material has adopted crosslinkable type polyvinyl semiconductor, can absorb effectively to weaken cable when work because the static noise that is produced when crooked or vibrations avoids influencing the transmission of normal signal; The 3rd, the oxygen barrier inner sheath has adopted low smoke, zero halogen high flame retardant polyolefine material, and the oxygen barrier performance is strong; The burning carbonization does not come off and forms fire-retardant housing, but the air of effective isolation outside gets into the combustion-supporting insulation burning of enclosure interior, and fire resistance is very high; Not halogen-containing poisonous element, the amount of being fuming is little during burning, and the gas attack property that produces during burning is little; Safety and Environmental Protection is good, good heat resistance, and mechanical strength is high.The 4th, electro-magnetic screen layer has adopted zinc-plated pure iron silk braiding to form, and zinc-plated pure iron silk belongs to magnetic material, has permeability preferably, and interfere with electromagnetic field is had higher electromagnetic compatibility shielding effect, anti-cable external electromagnetic interference.Adopt type of weave can guarantee that cable has anti-preferably flexion torsion ability, counter-bending torsional fatigue property is good.The 5th, flame-retardant layer is to adopt the inorfil strap to form through wrapped, does not burn, and high temperature does not come off, and the oxygen barrier ability is strong, very big effect has been played in the raising of the fire resistance of cable.The 6th, oversheath has adopted the halogen-free and low-smoke flame-retardant polyolefin material, good, the not halogen-containing poisonous element of fire resistance, and the amount of being fuming is little during burning, and the gas attack property that produces during burning is little, and Safety and Environmental Protection is good, good heat resistance, mechanical strength is high.
Description of drawings:
Fig. 1 is a structural representation of the present invention.
Label among the figure: 1 inner wire, 2 insulating barriers, 3 semi-conductive layers, 4 outer conductors, 5 oxygen barrier inner sheaths, 6 electro-magnetic screen layers, 7 flame-retardant layers, 8 oversheaths.
Below pass through embodiment, and combine accompanying drawing that the present invention is described further.
Embodiment:
Embodiment: referring to Fig. 1, the used in nuclear power station electromagnetism double shield low noise radio frequency cable of present embodiment,
Coat semi-conductive layer 3 at inner wire 1 outside coated insulation layer 2, in the outside of insulating barrier 2, coat outer conductor 4 in the outside of semi-conductive layer 3, coat oxygen barrier inner sheath 5 in the outside of outer conductor 4, coat electro-magnetic screen layer 6 in the outside of oxygen barrier inner sheath 5, coat flame-retardant layer 7 in the outside of electro-magnetic screen layer 6, coat oversheath 8 in the outside of flame-retardant layer 7.
Said inner wire 1 is to be made up of through stranded many silver-gilt copper wires, and good, the counter-bending mechanical fatigue of conductor flexibility is effective, conductance is high, the high-frequency serviceability high; What said insulating barrier 2 materials adopted is that crosslinked polyethylene is behind high-energy ray irradiation; Material molecule is changed into the insulating barrier of space network by linear structure, and the low smoke, zero halogen safety and environmental protection, insulation weight is light relatively, intensity is high, ageing resistance good, dielectric loss is little, heat resistance is high, radiation resistance is high; Said semi-conductive layer 3 materials have adopted crosslinkable type polyvinyl semiconductor, and main effect is to absorb when weakening cable work because the static noise that is produced when crooked or vibrations avoids influencing the transmission of normal signal; Said outer conductor 4 is to adopt the copper wire braiding to form, and is beneficial to the crooked of cable or installs and uses, and counter-bending fatigability is good, and the warp architecture distortion is little, stability is high; Said oxygen barrier inner sheath 5 is to adopt low smoke, zero halogen high flame retardant polyolefine material; The oxygen barrier performance is strong, fire resistance good, oxygen index is up to more than 42%, not halogen-containing poisonous element, and the amount of being fuming is little during burning; The gas attack property that produces during burning is little; Safety and Environmental Protection is good, good heat resistance, and mechanical strength is high; Said electro-magnetic screen layer 6 is to adopt zinc-plated pure iron silk braiding to form, and main effect is electromagnetic compatibility shielding, anti-cable external electromagnetic interference.Counter-bending fatigability is good; Said flame-retardant layer 7 is to adopt the inorfil strap to form through wrapped, and the oxygen barrier ability is strong, fire resistance good, does not have pernicious gas during burning, and Safety and Environmental Protection is good, good heat resistance; What said oversheath 8 adopted is the halogen-free and low-smoke flame-retardant polyolefin material, good, the not halogen-containing poisonous element of fire resistance, and the amount of being fuming is little during burning, and the gas attack property that produces during burning is little, and Safety and Environmental Protection is good, good heat resistance, mechanical strength is high.
The operation principle of cable of the present invention is: inner wire 1 has adopted the silver-coated copper wire material; The silver-coated copper wire conductor is copper line surface plating one deck ag material; The conductance ratio of silver layer is with much higher, and the conductor transmitting high-frequency signal is because kelvin effect; Signal code concentrates on the surface of conductors silver layer, so the decay meeting of signal reduces greatly; The semi-conductive layer 3 main effects that are provided with are to absorb when weakening cable work because the static noise that is produced when crooked or vibrations avoids influencing the transmission of normal signal; Electro-magnetic screen layer 6 has adopted zinc-plated pure iron silk braiding to form, and zinc-plated pure iron silk belongs to magnetic material, has permeability preferably, and interfere with electromagnetic field is had higher electromagnetic compatibility shielding effect, has the performance of good anti-cable external electromagnetic interference.Adopt type of weave can guarantee that cable has anti-preferably flexion torsion ability, counter-bending torsional fatigue property is good; Insulating barrier 2 materials adopt be crosslinked polyethylene behind high-energy ray irradiation, material molecule is changed into the insulating barrier of space network, low smoke, zero halogen safety and environmental protection by linear structure; Insulation weight is light relatively; Intensity is high, and ageing resistance is good, and dielectric loss is little; Heat resistance is high, bring up to 125 ℃ by 70 ℃, and radiation resistance is high; The oxygen barrier inner sheath 5 oxygen barrier performances that are provided with are strong, and the air that forms fire-retardant housing effective isolation outside does not get into the combustion-supporting insulation burning of enclosure interior but the burning carbonization does not come off, and fire resistance is very high; The flame-retardant layer 7 that is provided with adopts the inorfil straps to form through wrapped, does not burn, and high temperature does not come off, and the oxygen barrier ability is strong, very big effect has been played in the raising of the fire resistance of cable, further improved the fire resistance of cable, makes it to reach the category-A fire resistance; Oversheath 8 adopts the halogen-free and low-smoke flame-retardant polyolefin material, fire-retardant height, and not halogen-containing poisonous element, the amount of being fuming is little during burning, and the gas attack property that produces during burning is little, and Safety and Environmental Protection is good, good heat resistance, mechanical strength is high.
Claims (7)
1. used in nuclear power station electromagnetism double shield low noise radio frequency cable; It is characterized in that; Cable center is provided with inner wire (1), and the skin of said inner wire (1) is coated with insulating barrier (2), semi-conductive layer (3), outer conductor (4), oxygen barrier inner sheath (5), electro-magnetic screen layer (6), flame-retardant layer (7) and oversheath (8) successively; Said oxygen barrier inner sheath (5) and said oversheath (8) all adopt polyolefin to extrude formation.
2. used in nuclear power station electromagnetism double shield low noise radio frequency cable according to claim 1 is characterized in that, said inner wire (1) constitutes by many silver-gilt copper wires are stranded.
3. used in nuclear power station electromagnetism double shield low noise radio frequency cable according to claim 1 is characterized in that, said insulating barrier (2) adopts the IXPE material, and material molecule is a space network.
4. used in nuclear power station electromagnetism double shield low noise radio frequency cable according to claim 1 is characterized in that, said semi-conductive layer (3) adopts crosslinkable type polyvinyl semiconductor.
5. used in nuclear power station electromagnetism double shield low noise radio frequency cable according to claim 1 is characterized in that, said outer conductor (4) adopts the copper wire braiding to form.
6. used in nuclear power station electromagnetism double shield low noise radio frequency cable according to claim 1 is characterized in that, said oxygen barrier inner sheath (5) adopts low smoke, zero halogen high flame retardant polyolefine material, and oxygen index reaches more than 42%, and is not halogen-containing.
7. used in nuclear power station electromagnetism double shield low noise radio frequency cable according to claim 1 is characterized in that, said electro-magnetic screen layer (6) adopts zinc-plated pure iron silk braiding to form.8, used in nuclear power station electromagnetism double shield low noise radio frequency cable according to claim 1 is characterized in that, said flame-retardant layer (7) adopts the inorfil strap to form through wrapped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101240785A CN102646468A (en) | 2012-04-25 | 2012-04-25 | Electromagnetic double-shielded low-noise radio-frequency cable used for nuclear power station |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012101240785A CN102646468A (en) | 2012-04-25 | 2012-04-25 | Electromagnetic double-shielded low-noise radio-frequency cable used for nuclear power station |
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| CN102646468A true CN102646468A (en) | 2012-08-22 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104112498A (en) * | 2014-07-03 | 2014-10-22 | 安徽江淮电缆集团有限公司 | Cat5e (category 5 enhanced) high-temperature-resistant special cable for aerospace |
| CN104464948A (en) * | 2014-12-15 | 2015-03-25 | 天津市尚德电缆科技有限公司 | Low-temperature-resistant low-noise cable and manufacturing method |
| CN108878039A (en) * | 2018-06-22 | 2018-11-23 | 江苏艾力升电缆有限公司 | Share inner conductor channel transmission radio-frequency cable |
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| CN1179229A (en) * | 1995-03-20 | 1998-04-15 | Bicc电缆有限公司 | Polyethylene glycol treated carbon black and compounds thereof |
| CN1553932A (en) * | 2001-03-01 | 2004-12-08 | ����̼����ѧ�����ϼ�����˾ | Polyethylene crosslinkable composition |
| CN1719552A (en) * | 2005-06-17 | 2006-01-11 | 宝胜科技创新股份有限公司 | Fire isolation layer fire-proof digital signal cable |
| CN1945756A (en) * | 2006-10-20 | 2007-04-11 | 辽宁金环电缆厂 | High voltage polyethylene insulated high frequency coaxial cable |
| CN201051420Y (en) * | 2007-05-16 | 2008-04-23 | 江苏华光电缆电器有限公司 | Power cable for nuclear power |
| CN201345245Y (en) * | 2009-01-14 | 2009-11-11 | 安徽长风电缆集团有限公司 | Anti-static control cable |
| CN201522890U (en) * | 2009-10-20 | 2010-07-07 | 常州八益电缆有限公司 | Low-smoke halogen-free flame-retardant type coaxial cable for nuclear power plant |
| CN102112542A (en) * | 2008-07-28 | 2011-06-29 | Ls电线有限公司 | Resin composition for coating material of electrical cables and electrical cables using the same |
| CN202651326U (en) * | 2012-04-25 | 2013-01-02 | 安徽宏源特种电缆集团有限公司 | Electromagnetic double shielding low noise radio frequency cable used in nuclear power plants |
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2012
- 2012-04-25 CN CN2012101240785A patent/CN102646468A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1179229A (en) * | 1995-03-20 | 1998-04-15 | Bicc电缆有限公司 | Polyethylene glycol treated carbon black and compounds thereof |
| CN1553932A (en) * | 2001-03-01 | 2004-12-08 | ����̼����ѧ�����ϼ�����˾ | Polyethylene crosslinkable composition |
| CN1719552A (en) * | 2005-06-17 | 2006-01-11 | 宝胜科技创新股份有限公司 | Fire isolation layer fire-proof digital signal cable |
| CN1945756A (en) * | 2006-10-20 | 2007-04-11 | 辽宁金环电缆厂 | High voltage polyethylene insulated high frequency coaxial cable |
| CN201051420Y (en) * | 2007-05-16 | 2008-04-23 | 江苏华光电缆电器有限公司 | Power cable for nuclear power |
| CN102112542A (en) * | 2008-07-28 | 2011-06-29 | Ls电线有限公司 | Resin composition for coating material of electrical cables and electrical cables using the same |
| CN201345245Y (en) * | 2009-01-14 | 2009-11-11 | 安徽长风电缆集团有限公司 | Anti-static control cable |
| CN201522890U (en) * | 2009-10-20 | 2010-07-07 | 常州八益电缆有限公司 | Low-smoke halogen-free flame-retardant type coaxial cable for nuclear power plant |
| CN202651326U (en) * | 2012-04-25 | 2013-01-02 | 安徽宏源特种电缆集团有限公司 | Electromagnetic double shielding low noise radio frequency cable used in nuclear power plants |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104112498A (en) * | 2014-07-03 | 2014-10-22 | 安徽江淮电缆集团有限公司 | Cat5e (category 5 enhanced) high-temperature-resistant special cable for aerospace |
| CN104464948A (en) * | 2014-12-15 | 2015-03-25 | 天津市尚德电缆科技有限公司 | Low-temperature-resistant low-noise cable and manufacturing method |
| CN108878039A (en) * | 2018-06-22 | 2018-11-23 | 江苏艾力升电缆有限公司 | Share inner conductor channel transmission radio-frequency cable |
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Application publication date: 20120822 |