CN107193093A - A kind of radiation hardness fire-retardant cable and its manufacture method - Google Patents
A kind of radiation hardness fire-retardant cable and its manufacture method Download PDFInfo
- Publication number
- CN107193093A CN107193093A CN201710496558.7A CN201710496558A CN107193093A CN 107193093 A CN107193093 A CN 107193093A CN 201710496558 A CN201710496558 A CN 201710496558A CN 107193093 A CN107193093 A CN 107193093A
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- Prior art keywords
- radiation hardness
- fire
- radiation
- retardant
- layer
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/443—Protective covering
- G02B6/4432—Protective covering with fibre reinforcements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/4436—Heat resistant
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Insulated Conductors (AREA)
Abstract
The present invention relates to a kind of radiation hardness fire-retardant cable and its manufacture method, include cable core and oversheath, it is characterized in that fireprotection layer in cable core outer cladding, wrapped radiation hardness reinforcer outside interior fireprotection layer, the outer fireprotection layer of radiation hardness reinforcer outer cladding, outer fireprotection layer outer cladding oversheath, described oversheath is the fire-retardant oversheath of radiation hardness.The present invention sets inside and outside two layers of fireprotection layer and the fire-retardant oversheath of radiation hardness, and the fire retardant performance of optical cable is high, fully meets international bunchy combustion standard requirement；Even if generation nuclear leakage and fire can also keep communication unimpeded, start alarm, reduction nuclear leakage and fire hazard, it is ensured that the security of the lives and property；Optical cable durability is strong, and service life is more than 60 years；Used particularly suitable in the big place of the amount of radiation such as nuclear power station.
Description
Technical field
The present invention relates to a kind of used in nuclear power station radiation hardness fire-retardant cable and its manufacture method, belong to optic communication transmission technology neck
Domain.
Background technology
As three generations's nuclear plant digital is communicated, instrument system is continued to develop, optical cable is with its high communication bandwidth, anti-electromagnetism
Interference, optoelectronic insulation, small size, reliability, it is expansible the characteristics of progressively replace communication cable in nuclear power station.Used in nuclear power station
Optical cable requires very high, does not require nothing more than radiation hardness, also requires fire-retardant fireproof and the service life of more than 60 years.Existing cable configuration
It is difficult to the use requirement for meeting above-mentioned specific environment.
The content of the invention
The technical problems to be solved by the invention be for above-mentioned prior art exist not enough there is provided a kind of radiation hardness
Fire-retardant cable and its manufacture method, it is reasonable that the cable configuration is set, can not only radiation hardness and fire-retardant fireproof, and durability is strong,
Service life is long.
The technical scheme that the present invention is used by solution the problem of set forth above for：Include cable core and oversheath, it is special
Levy and be fireprotection layer in cable core outer cladding, wrapped radiation hardness reinforcer outside interior fireprotection layer is prevented fires outside radiation hardness reinforcer outer cladding
Layer, outer fireprotection layer outer cladding oversheath, described oversheath is the fire-retardant oversheath of radiation hardness.
By such scheme, described cable core includes 2 ~ 24 core tight tube fibers, described tight tube fiber by radiation resistant optical fiber and
Radiation hardness tight sleeve layer is constituted.
By such scheme, described radiation resistant optical fiber is the optical fiber of coating radiation hardness coat.
By such scheme, described radiation hardness tight sleeve layer is the radiation hardness materials such as polytetrafluoroethylene (PTFE) or perfluoroethylene-propylene
Layer.
By such scheme, described interior fireprotection layer by mica tape or radiation hardness low smoke and zero halogen ceramic polyolefin tapes it is wrapped and
Into.
By such scheme, described outer fireprotection layer by mica tape or radiation hardness low smoke and zero halogen ceramic polyolefin tapes it is wrapped and
Into.
By such scheme, described radiation hardness reinforcer is the inorganic fibers such as glass fibre or carbon fiber.
By such scheme, the fire-retardant oversheath of described radiation hardness is hindered by the radiation hardness such as polytetrafluoroethylene (PTFE) or perfluoroethylene-propylene
Combustible material is constituted, and fire resistance meets international bunchy combustion standard.
By such scheme, the fire-retardant jacket material of described radiation hardness is in accumulative irradiation metering 1.9X103Under conditions of Gy
Service life is more than 60 years.
The technical scheme of preparation method of the present invention is as follows：
Radiation resistant optical fiber is subjected to tight tube fiber making on small extruding machine, below optical fiber laying tension 1.5N, optical fiber is from head
One layer of radiation hardness tight sleeve layer is coated after, the take-up after cooling down water cooling.
2 ~ 24 tight tube fibers are placed on pay off rack, enter stranded through guide wheel, line concentration mould, then through stranded equipment with one
Fixed twisting pitch twists together to form cable core；
The wrapped radiation hardness reinforcer after fireprotection layer in wrapped one layer outside cable core, then wrapped one layer of outer fireprotection layer outside reinforcer；
Most coat one layer of fire-retardant oversheath of radiation hardness through extruding machine afterwards.
By such scheme, the sheath extruding machine from charging aperture to each area of die orifice set gradually for：Charging aperture, machine barrel one
Area, the area of machine barrel two, the area of machine barrel three, the area of machine barrel four, the area of machine barrel five, machine neck and die orifice, and each area's temperature is set；Die orifice is arranged on to go out
The cooled region at mouthful place uses sub-sectional cooling, and the first paragraph that is connected with die orifice, which is cooled down, uses chilling temperature for 50 ± 10 DEG C of warm water
Cooling bath, remaining each section is normal temperature water cooling.
The beneficial effects of the present invention are：The 1st, inside and outside two layers of fireprotection layer and the fire-retardant oversheath of radiation hardness, the resistance of optical cable are set
Fire fire protecting performance high, fully meet international bunchy combustion standard requirement；2nd, reinforcer is the inorganic fibres such as glass fibre or carbon fiber
Dimension, had both met the pulling force characteristic requirement of optical cable, also met the radiation hardness requirement of optical cable；Even if the 3, occurring nuclear leakage and fire also can
It is enough to keep communication unimpeded, so that it is guaranteed that key equipment is operated, start alarm, reduction nuclear leakage and fire hazard, it is ensured that life wealth
Production safety；4th, the radiation hardness materials'use life-span used is more than 60 years so that optical cable durability is strong, and service life is long；
5th, cable configuration sets reasonable, and function is strong, and manufacture craft is easy.Used particularly suitable in the big place of the amount of radiation such as nuclear power station.
Brief description of the drawings
Fig. 1 is the radial section structure chart of one embodiment of the invention.
Embodiment
The present invention is expanded on further with reference to embodiment.
As shown in figure 1, including cable core and interior fireprotection layer 3, radiation proof reinforcer 4, outer fireprotection layer 5 and the fire-retardant shield of radiation hardness
Set 6.Described cable core is the tight tube fiber after stranded with certain twisting pitch, and described twisting pitch is 20 ~ 100mm,
The radiation hardness tight sleeve layer 2 that the tight set fibre includes radiation resistant optical fiber 1 and is coated on outside optical fiber, described radiation resistant optical fiber is painting
The optical fiber of radiation hardness coat is covered, the radiation hardness tight sleeve layer is polytetrafluoroethylene (PTFE) or perfluoroethylene-propylene radiation hardness material layer；
The radiation hardness tight sleeve layer one-sided thickness is 0.2 ~ 0.4mm.The inside and outside fireprotection layer 3 and 5 by mica tape or the low cigarette of radiation hardness without
Halogen ceramic polyolefin tapes are wrapped to be formed, 0.1 ~ 0.4mm of fireprotection layer one-sided thickness.The radiation hardness reinforcer 4 is glass fibre
Or the inorganic fibers such as carbon fiber, the radiation hardness reinforcer need to completely coat cable core；The fire-retardant oversheath of radiation hardness
It is made up of the radiation hardness fire proofing such as polytetrafluoroethylene (PTFE) or perfluoroethylene-propylene, 0.5 ~ 1.5mm of one-sided thickness.
The manufacturing process of the present embodiment is to carry out as follows：
1 a diameter of 250 μm of radiation resistant optical fiber is placed on pay off rack, laying tension 0.8N, a strata is coated through extruding machine
900 μm of external diameter after tetrafluoroethene tight sleeve layer, then the take-up after cooling down water cooling drying.The extruding machine is each from charging aperture to die orifice
Area set gradually for：Charging aperture, the area of machine barrel one, the area of machine barrel two, the area of machine barrel three, the area of machine barrel four, the area of machine barrel five, machine neck and die orifice,
And set each area's temperature to be respectively：Charging aperture is 260 ± 5 DEG C, the area of machine barrel one is 280 ± 10 DEG C, the area of machine barrel two is 290 ± 10
DEG C, the area of machine barrel three be 300 ± 10 DEG C, the area of machine barrel four be 310 ± 10 DEG C, the area of machine barrel five is 320 ± 10 DEG C, machine neck and die orifice are
330±10℃；It is arranged on the cooled region at die exit and uses sub-sectional cooling, the first paragraph cooling being connected with die orifice is using cold
But temperature is 50 ± 10 DEG C of warm water cooling bath, and remaining each section is normal temperature water cooling.
By fine stranded, the twisting pitch 80mm that through guide wheel and line concentration mould penetrates stranded progress of 6 900 μm of tight set, further around
Fireprotection layer in bag, interior fireprotection layer is width 10mm, thickness 0.14mm mica tape, 45 ° of wrapping angle, overlap joint 20%.In wrapped cloud
Further around 8 600tex glass fiber yarns of bag, lay of lapping 120mm, glass fiber yarn laying tension 5N after master tape.In wrapped glass
Further around one layer of outer fireprotection layer of bag after silvalin, outer fire prevention layer material and consistent with interior fireprotection layer around bag parameter is finally covered to complete
Radiation hardness fire retardant jacket of the cable core through sheath extruding machine outer crowded a layer thickness 1.0mm outside the outer fireprotection layer.The extrusion molding
Machine from charging aperture to each area of die orifice set gradually for：Charging aperture, the area of machine barrel one, the area of machine barrel two, the area of machine barrel three, the area of machine barrel four, machine
5th area of cylinder, machine neck and die orifice, and set each area's temperature to be respectively：Charging aperture is 150 ± 5 DEG C, the area of machine barrel one is 180 ± 10 DEG C,
The area of machine barrel two is 190 ± 10 DEG C, the area of machine barrel three is 200 ± 10 DEG C, the area of machine barrel four is 210 ± 10 DEG C, and the area of machine barrel five is 220 ± 10
DEG C, machine neck and die orifice be 230 ± 10 DEG C；It is arranged on the cooled region at die exit and uses sub-sectional cooling, is connected with die orifice
First paragraph cooling uses chilling temperature for 50 ± 10 DEG C of warm water cooling bath, and remaining each section is normal temperature water cooling.
Claims (10)
1. a kind of radiation hardness fire-retardant cable, includes cable core and oversheath, it is characterised in that fireprotection layer in cable core outer cladding, interior anti-
Wrapped radiation hardness reinforcer outside fire bed, the outer fireprotection layer of radiation hardness reinforcer outer cladding, outer fireprotection layer outer cladding oversheath is described
Oversheath is the fire-retardant oversheath of radiation hardness.
2. the radiation hardness fire-retardant cable as described in claim 1, it is characterised in that described cable core includes 2 ~ 24 core tight tube fibers,
Described tight tube fiber is made up of radiation resistant optical fiber and radiation hardness tight sleeve layer.
3. the radiation hardness fire-retardant cable as described in claim 2, it is characterised in that described radiation resistant optical fiber is coating radiation hardness
The optical fiber of coat.
4. the radiation hardness fire-retardant cable as described in Claims 2 or 3, it is characterised in that described radiation hardness tight sleeve layer is polytetrafluoro
The radiation hardness material layer such as ethene or perfluoroethylene-propylene.
5. the radiation hardness fire-retardant cable as described in claim 1 or 2, it is characterised in that described interior fireprotection layer is by mica tape or resistance to
Low smoke and zero halogen ceramic polyolefin tapes are wrapped forms for radiation.
6. the radiation hardness fire-retardant cable as described in claim 1 or 2, it is characterised in that described outer fireprotection layer is by mica tape or resistance to
Low smoke and zero halogen ceramic polyolefin tapes are wrapped forms for radiation.
7. the radiation hardness fire-retardant cable as described in claim 1 or 2, it is characterised in that described radiation hardness reinforcer is glass fibers
The inorganic fibers such as dimension or carbon fiber.
8. the radiation hardness fire-retardant cable as described in claim 1 or 2, it is characterised in that the fire-retardant oversheath of described radiation hardness is by gathering
Tetrafluoroethene or perfluoroethylene-propylene are constituted.
9. the radiation hardness fire-retardant cable as described in claim 1 or 2, it is characterised in that the fire-retardant jacket material of described radiation hardness
In accumulative irradiation metering 1.9X103Service life is more than 60 years under conditions of Gy.
10. the manufacture method of radiation hardness fire-retardant cable described in a kind of claim 1 or 2, it is characterised in that radiation resistant optical fiber exists
Tight tube fiber making is carried out on small extruding machine, below optical fiber laying tension 1.5N, optical fiber coats one layer of resistance to spoke from after head entrance
Tight sleeve layer is penetrated, the take-up after cooling down water cooling；
2 ~ 24 tight tube fibers are placed on pay off rack, enter stranded through guide wheel, line concentration mould, then through stranded equipment with certain
Twisting pitch twists together to form cable core；
The wrapped radiation hardness reinforcer after fireprotection layer in wrapped one layer outside cable core, then wrapped one layer of outer fireprotection layer outside reinforcer；
Most coat one layer of fire-retardant oversheath of radiation hardness through extruding machine afterwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710496558.7A CN107193093A (en) | 2017-06-26 | 2017-06-26 | A kind of radiation hardness fire-retardant cable and its manufacture method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710496558.7A CN107193093A (en) | 2017-06-26 | 2017-06-26 | A kind of radiation hardness fire-retardant cable and its manufacture method |
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| CN107193093A true CN107193093A (en) | 2017-09-22 |
Family
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| CN201710496558.7A Pending CN107193093A (en) | 2017-06-26 | 2017-06-26 | A kind of radiation hardness fire-retardant cable and its manufacture method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108761682A (en) * | 2018-05-31 | 2018-11-06 | 安徽电信器材贸易工业有限责任公司 | A kind of used in nuclear power station optical cable and preparation method thereof |
| CN109782401A (en) * | 2018-12-11 | 2019-05-21 | 通鼎互联信息股份有限公司 | Indoor circular optical cable and preparation method thereof |
| CN113253407A (en) * | 2021-04-30 | 2021-08-13 | 安徽光纤光缆传输技术研究所(中国电子科技集团公司第八研究所) | Method for manufacturing extravehicular irradiation-resistant bundled optical cable |
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| CN202256797U (en) * | 2011-08-29 | 2012-05-30 | 四川九洲线缆有限责任公司 | High-temperature-resistant and radiation-resistant optical cable for communication |
| CN104076463A (en) * | 2014-06-27 | 2014-10-01 | 南京升平通信设备有限公司 | High-temperature-resistant radiation protection optical cable |
| JP2015537231A (en) * | 2012-08-31 | 2015-12-24 | コーニング インコーポレイテッド | Flame retardant light diffusing fiber |
| CN105223666A (en) * | 2015-10-12 | 2016-01-06 | 中天科技装备电缆有限公司 | The fire-retardant water-fast flame cable of a kind of radioresistance |
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| CN106772852A (en) * | 2016-12-23 | 2017-05-31 | 通鼎互联信息股份有限公司 | A kind of dry type fire prevention micro- cable of protection against rodents central tube and preparation method thereof |
| CN207301412U (en) * | 2017-06-26 | 2018-05-01 | 长飞光纤光缆股份有限公司 | A kind of radiation hardness fire-retardant cable |
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2017
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202256797U (en) * | 2011-08-29 | 2012-05-30 | 四川九洲线缆有限责任公司 | High-temperature-resistant and radiation-resistant optical cable for communication |
| JP2015537231A (en) * | 2012-08-31 | 2015-12-24 | コーニング インコーポレイテッド | Flame retardant light diffusing fiber |
| CN104076463A (en) * | 2014-06-27 | 2014-10-01 | 南京升平通信设备有限公司 | High-temperature-resistant radiation protection optical cable |
| CN105223666A (en) * | 2015-10-12 | 2016-01-06 | 中天科技装备电缆有限公司 | The fire-retardant water-fast flame cable of a kind of radioresistance |
| CN105929503A (en) * | 2016-06-12 | 2016-09-07 | 中国电子科技集团公司第八研究所 | Loose lapping reinforced buffering type flexible radiation resistant optical cable and manufacturing method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108761682A (en) * | 2018-05-31 | 2018-11-06 | 安徽电信器材贸易工业有限责任公司 | A kind of used in nuclear power station optical cable and preparation method thereof |
| CN109782401A (en) * | 2018-12-11 | 2019-05-21 | 通鼎互联信息股份有限公司 | Indoor circular optical cable and preparation method thereof |
| CN113253407A (en) * | 2021-04-30 | 2021-08-13 | 安徽光纤光缆传输技术研究所(中国电子科技集团公司第八研究所) | Method for manufacturing extravehicular irradiation-resistant bundled optical cable |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170922 |
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| RJ01 | Rejection of invention patent application after publication |