CN207624403U - The resistance to intense radiation used under a kind of harsh environment measures cable - Google Patents
The resistance to intense radiation used under a kind of harsh environment measures cable Download PDFInfo
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- CN207624403U CN207624403U CN201721166883.9U CN201721166883U CN207624403U CN 207624403 U CN207624403 U CN 207624403U CN 201721166883 U CN201721166883 U CN 201721166883U CN 207624403 U CN207624403 U CN 207624403U
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Abstract
The resistance to intense radiation used under a kind of harsh environment measures cable, and structure is：Core elder generation pair twist constitutes pair twist group, and then multiple pair twist groups are twisted constitutes cable core；The outer from-inner-to-outer of cable core is equipped with third wrapping layer, liner layer, woven shield and sheath successively；The pair twist group is twisted by low-smoke non-halogen flame-retardant filling rubber item and at least both threads core and is constituted respectively；The core is made of the conductor of single tape insulation layer and twining package tape；Every conductor is constituted by tin-coated copper monofilament is twisted；The outer wrapping layer of the conductor is constituted by polyamide tape dextrad is wrapped；The insulating layer be by continuous vulcanization outside conductor extrude low-smoke non-halogen flame-retardant second third insulation constitute；The outer wrapping layer of the insulation is constituted by polyamide tape dextrad is wrapped；The outer wrapping layer of the stranding is constituted by the overlapping of low-smoke non-halogen flame-retardant twining package tape is wrapped；The woven shield is made of liner layer external chiasma braiding tinned copper wire；The sheath is to extrude low-smoke non-halogen flame-retardant thermosetting property protective cover material composition.
Description
Technical field
The utility model is related to a kind of harsh environment cable, more particularly to a kind of intense radiation harsh environment is electric with measuring
Cable is suitable for the measurement cable of rated voltage 300/500V, belongs to field of cable technology.
Background technology
Environment mainly considers LOCA accident (coolant loss accident) condition in previous two generations nuclear power plant containment shell, now main
Stream three generations's nuclear power station technology is mainly considered including more harsh environment such as pressure vessel ruptures.So harsh environment measures
Cable needs to meet the requirement for being no less than 60 years service life, tolerance conventional gamma-ray irradiation, low-smoke non-halogen flame-retardant, and needs
Meet the requirement of the environment of resistance to LOCA, resistance to harsh environment simultaneously.The superposition of these conditions is abnormal cruel for cable.For
Meet these requirements, measurement has carried out special design with cable our company to cable material, process and structure, eventually by institute
There is qualification test.
Utility model content
Technical problems to be solved
For three generations's nuclear power station harsh environmental conditions, 60 years life problems for solving cable insulation material, resistance to y spoke are needed
According to dosage 2500kGy irradiance problems, resistance to LOCA environmental problems, resistance to harsh environment problem.And meet low cigarette, Halogen, fire-retardant simultaneously
Basic demand.
The technical solution used to solve above-mentioned technical problem
The utility model provides a kind of survey being suitable for such as three generations's nuclear power station harsh environment (in shell) intense radiation harsh environment
Cable is measured, which disclosure satisfy that 60 years service life；It disclosure satisfy that the requirement of low-smoke non-halogen flame-retardant；In high temperature or low temperature
Performance is stablized under environment, and heat-proof aging and high-dose-rate irradiation ageing properties are excellent；Can normally it make under nuclear power station harsh environment
With.To realize the above-mentioned technical purpose, the utility model uses following technical scheme：
The resistance to intense radiation used under a kind of harsh environment measures cable, and structure is：Core elder generation pair twist constitutes pair twist group, so
Multiple pair twist groups are twisted afterwards constitutes cable core, and filling is filled in the gap between each pair twist group；The outer from-inner-to-outer of cable core is set successively
There are third wrapping layer, liner layer, woven shield and sheath；The external diametrical extent of the cable is 8.5~43.0mm；
Pair twist group is made of 2 cores and 2 packing pair twists, 1 core and 2 packing adjacent spaces；
Direction of lay is left-hand when core pair twist, and the twisting pitch of core pair twist is not more than 120mm；
The twisted lay ratio of stranding is not more than 18 times；
The core from-inner-to-outer is the second wrapping layer of conductor, the first wrapping layer, insulating layer；
Every conductor is constituted by tin-coated copper monofilament is twisted, and the twisted direction of lay outermost layer of tin-coated copper monofilament is left-hand, phase
The direction of lay of the tin-coated copper monofilament of adjacent bed is opposite；The twisted lay ratio range of internal layer tin-coated copper monofilament：30~40, outer layer plating
The twisted lay ratio range of tin copper monofilament：12~16；The diameter range of tin-coated copper monofilament：0.193mm~0.243mm, conductor
Diameter range 1.3mm~1.6mm；
First wrapping layer is constituted by polyamide tape dextrad is wrapped；
The insulating layer is to extrude the third Insulation Material of second of low-smoke non-halogen flame-retardant by continuous vulcanization to constitute；
Second wrapping layer is constituted by polyamide tape dextrad is wrapped；
The third wrapping layer is constituted by the overlapping of low-smoke non-halogen flame-retardant twining package tape is wrapped；
The liner layer is by extruding low-smoke non-halogen flame-retardant thermosetting property EVA material (ethene-vinyl acetate outside third wrapping layer
Copolymer, also referred to as ethene-vinyl acetate copolymer, English name：Ethylene Viny, referred to as EVA) it constitutes；
The woven shield is made of liner layer wrapping layer external chiasma braiding tinned copper wire；
The outer wrapping layer of braiding is surrounded with outside the woven shield；The outer wrapping layer of braiding be by high temperature resistance polyester band be overlapped around
Packet is constituted；The thickness range of high temperature resistance polyester band is 0.04mm, and wrapped cap rate range is 20%~50%.Further, described
The number of conductor with insulating layer is 2~24.
Further, the outer wrapping layer of the insulation is made of Kapton, and Kapton lapping direction is
Left-hand, wrapped cap rate are not less than 20%.
Further, filling is low-smoke non-halogen flame-retardant packing material.Such as：3 core cable conductor avris gap filling models
The unvulcanised circle of XH-30A fills out core, and it is aramid fiber to fill out core center strengthening core.4 core cable conductor center clearances and avris gap are filled out
It fills model XH-30A unvulcanised circles and fills out core, it is aramid fiber to fill out core center strengthening core.
Further, the thickness of the insulating layer meets the requirement of GB/T 12706-2008.The selection that Insulation Material can be selected
Low-smoke non-halogen flame-retardant ethylene-propylene rubber insulated material, such as：XJ-32HB type Insulation Materials.
Further, the nominal thickness of the low-smoke non-halogen flame-retardant twining package tape is 0.2mm；Wrapped cap rate is not less than 5mm.
Further, the minimum thickness of the sheath is 1.2mm.Low-smoke non-halogen flame-retardant thermosetting property protective cover material can select EVA
Class material, such as：XH-32HB type protective cover materials.
Advantageous effect
After adopting the above technical scheme, the utility model has the advantages that：
(1) Cable Construction Design advantages of simple：The core wire of more circumferential arrangements and filling are twisted into pair twist group cable core, process
It is convenient, and twisted cable core is secured.Every conductor tyre insulating layer, wrapping layer, improve the insulating properties and radiation-resistant property of cable.
Cable not only increases cable radiation resistance and also reduces insulated wire cores pressure after increasing Kapton wrapping layer
Flat risk.And entire cable core processing is more convenient, cable core more rounding.Pair twist group cable core is not more than 18 times by being twisted into lay ratio
Cable core.
(2) stranded tinned copper conductor improves the electric conductivity of conductor, makes conductor more resistant to corrosion, it is possible to reduce copper oxygen
Change (copper and the oxygen reflection generation CuO and Cu in air2O generation).
(3) low-smoke non-halogen flame-retardant rubber item, can be closely adhered to core, and irregular shape is deformed into gap, to make
Cable core more rounding so that cable low-smoke non-halogen flame-retardant performance is more preferable.
(4) low-smoke non-halogen flame-retardant thermosetting property sheath makes the resistance to nuclear radiation of cable, resistance to long term heat ageing, resistance to harsh environment, more can
Improve cable service life.Ensure that cable life reaches 60 years.
(5) low-smoke non-halogen flame-retardant ethylene-propylene rubber insulated layer, low-smoke non-halogen flame-retardant EVA thermosetting property sheaths make the construction of cable more
Softness, minimum bending radius can reach 6 times of outside diameters of cable, more flexible, be more convenient and suitable for narrow area in nuclear power plant containment shell
Domain uses.
(6) the utility model cable, conductor service life under 90 DEG C of hot conditions is 60 years, can be with the nuclear power station of resistance to three generations
Harsh environment in containment.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model.
In figure：1, conductor, the 2.1, first wrapping layer, the 2.2, second wrapping layer, 3, insulating layer, 4, filling, 5, third it is wrapped
Layer, 6, liner layer, 7, woven shield and the outer wrapping layer of braiding, 8, sheath, 9, packing.
Specific implementation mode
As shown in Figure 1, the resistance to intense radiation used under a kind of harsh environment measures cable, structure is：Core elder generation pair twist structure
At pair twist group, then multiple pair twist groups are twisted constitutes cable core, and filling is filled in the gap between each pair twist group；Outside cable core in
And it is outer successively equipped with third wrapping layer, liner layer, woven shield and sheath；The external diametrical extent of the cable is 8.5~
43.0mm；
Pair twist group is made of 2 cores and 2 packing pair twists, 1 core and 2 packing adjacent spaces, pair twist group
Cross section is ellipse；Direction of lay is left-hand when core pair twist, and the twisting pitch of core pair twist is not more than 120mm；Stranding
Twisted lay ratio is not more than 18 times；The core from-inner-to-outer is the second wrapping layer of conductor, the first wrapping layer, insulating layer；Often
Root conductor is constituted by tin-coated copper monofilament is twisted, and the twisted direction of lay outermost layer of tin-coated copper monofilament is left-hand, adjacent layer it is tin plating
The direction of lay of copper monofilament is opposite；The twisted lay ratio range of internal layer tin-coated copper monofilament：30~40, the strand of outer layer tin-coated copper monofilament
Close lay ratio range：12~16；The diameter range of tin-coated copper monofilament：0.193mm~0.243mm, the diameter range 1.3mm of conductor
~1.6mm；First wrapping layer is constituted by polyamide tape dextrad is wrapped；The insulating layer be extruded by continuous vulcanization it is low
The third Insulation Material of second of cigarette halogen-free flameproof is constituted；Second wrapping layer is constituted by polyamide tape dextrad is wrapped；The third
Wrapping layer is constituted by the overlapping of low-smoke non-halogen flame-retardant twining package tape is wrapped；The liner layer be by extrude outside third wrapping layer low cigarette without
Halogen flame-retardant thermoset EVA material is constituted；The woven shield is made of liner layer wrapping layer external chiasma braiding tinned copper wire；
The outer wrapping layer of braiding is surrounded with outside the woven shield；The outer wrapping layer of braiding is constituted by the overlapping of high temperature resistance polyester band is wrapped,
Wrapped cap rate range is 20%~50%.The sheath is to extrude low-smoke non-halogen flame-retardant thermosetting property protective cover material by even sulphur to constitute.
In this example：Core is 12；
The Kapton lapping direction of second wrapping layer is left-hand, and wrapped cap rate is not less than 20%；The
The polyimides bandwidth of two wrapping layers is 8mm；
The nominal thickness of the insulating layer of cable core ranging from 0.6~1.0mm；The third Insulation Material of second of Insulation Material is low smoke and zero halogen resistance
Fire ethylene-propylene rubber insulated material；
The packing is the rubber item of low-smoke non-halogen flame-retardant；
The rubber item is the low-smoke non-halogen flame-retardant filling unvulcanised rubber item of 1.8mm-2.2mm, twisted with core
Direction is opposite.
The filling is non-hygroscopic low-smoke non-halogen flame-retardant packing material.
The nominal thickness for constituting the twining package tape of third wrapping layer is 0.2mm；Wrapped cap rate is not less than 15%.
The thickness range of liner layer is 0.2~1.5mm.
The tinned copper wire diameter of the woven shield is 0.12~0.25mm, and count is not less than 90%；High temperature resistant
The thickness range of polyester belt is 0.04mm.
The minimum thickness of the sheath is 1.2mm；Protective cover material is low-smoke non-halogen flame-retardant thermosetting property EVA protective cover materials.
After adopting the above scheme, the service life of this measurement cable reaches 60 years or more, good bending property, anti-high radiation property
Well, processing performance is good, can be with the environment of resistance to LOCA, the harsh environment of resistance to nuclear power station.And meet low cigarette, Halogen, fire-retardant basic simultaneously
It is required that.
After testing, function, the performance indicator such as following table of the cable of this example：
Claims (7)
1. the resistance to intense radiation used under a kind of harsh environment measures cable, it is characterized in that structure is：Core elder generation pair twist constitutes pair twist
Group, then multiple pair twist groups are twisted constitutes cable core, and filling is filled in the gap between each pair twist group；The outer from-inner-to-outer of cable core according to
It is secondary to be equipped with third wrapping layer, liner layer, woven shield and sheath；The external diametrical extent of the cable is 8.5~43.0mm；
Pair twist group is made of 2 cores and 2 packing pair twists, 1 core and 2 packing adjacent spaces；
Direction of lay is left-hand when core pair twist, and the twisting pitch of core pair twist is not more than 120mm；
The twisted lay ratio of stranding is not more than 18 times；
The core from-inner-to-outer is the second wrapping layer of conductor, the first wrapping layer, insulating layer；
Every conductor is constituted by tin-coated copper monofilament is twisted, and the twisted direction of lay outermost layer of tin-coated copper monofilament is left-hand, adjacent layer
Tin-coated copper monofilament direction of lay it is opposite；The twisted lay ratio range of internal layer tin-coated copper monofilament：30~40, outer layer tin-coated copper list
The twisted lay ratio range of silk：12~16；The diameter range of tin-coated copper monofilament：0.193mm~0.243mm, the diameter model of conductor
Enclose 1.3mm~1.6mm；
First wrapping layer is constituted by polyamide tape dextrad is wrapped；
The insulating layer is to extrude the third Insulation Material of second of low-smoke non-halogen flame-retardant by continuous vulcanization to constitute；
Second wrapping layer is constituted by polyamide tape dextrad is wrapped；
The third wrapping layer is constituted by the overlapping of low-smoke non-halogen flame-retardant twining package tape is wrapped；
The liner layer is constituted by extruding low-smoke non-halogen flame-retardant thermosetting property EVA material outside third wrapping layer；
The woven shield is made of liner layer wrapping layer external chiasma braiding tinned copper wire；
The outer wrapping layer of braiding is surrounded with outside the woven shield；The outer wrapping layer of braiding is to be overlapped wrapped structure by high temperature resistance polyester band
At wrapped cap rate range is 20%~50%；
The sheath is to extrude low-smoke non-halogen flame-retardant thermosetting property protective cover material by even sulphur to constitute.
2. the resistance to intense radiation used under harsh environment according to claim 1 measures cable, it is characterized in that core has 2~24
Root；
The Kapton lapping direction of second wrapping layer is left-hand, and wrapped cap rate is not less than 20%；Second around
The polyimides bandwidth of covering is 8mm；
The nominal thickness of the insulating layer of cable core ranging from 0.6~1.0mm；The third Insulation Material of second of Insulation Material is low-smoke non-halogen flame-retardant second
Propylene rubber Insulation Material；
The packing is the rubber item of low-smoke non-halogen flame-retardant；
The rubber item is the low-smoke non-halogen flame-retardant filling unvulcanised rubber item of 1.8mm-2.2mm, the direction of lay with core
On the contrary.
3. the resistance to intense radiation used under harsh environment according to claim 1 measures cable, it is characterized in that the filling is
Non-hygroscopic low-smoke non-halogen flame-retardant packing material.
4. the resistance to intense radiation that is used under harsh environment according to claim 1 measures cable, it is characterized in that constitute third around
The nominal thickness of the twining package tape of covering is 0.2mm；Wrapped cap rate is not less than 15%.
5. the resistance to intense radiation used under harsh environment according to claim 1 measures cable, it is characterized in that the thickness of liner layer
It is 0.2~1.5mm to spend range.
6. the resistance to intense radiation used under harsh environment according to claim 1 measures cable, it is characterized in that the braiding is shielded
The tinned copper wire diameter for covering layer is 0.12~0.25mm, and count is not less than 90%；The thickness range of high temperature resistance polyester band is
0.04mm。
7. the resistance to intense radiation used under harsh environment according to claim 1 measures cable, it is characterized in that the sheath
Minimum thickness is 1.2mm；Protective cover material is low-smoke non-halogen flame-retardant thermosetting property EVA protective cover materials.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721166883.9U CN207624403U (en) | 2017-09-13 | 2017-09-13 | The resistance to intense radiation used under a kind of harsh environment measures cable |
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| CN201721166883.9U CN207624403U (en) | 2017-09-13 | 2017-09-13 | The resistance to intense radiation used under a kind of harsh environment measures cable |
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| CN207624403U true CN207624403U (en) | 2018-07-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113035420A (en) * | 2021-03-24 | 2021-06-25 | 山东华凌电缆有限公司 | Rated voltage 300/500V computer cable for passive nuclear power station and production method |
-
2017
- 2017-09-13 CN CN201721166883.9U patent/CN207624403U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113035420A (en) * | 2021-03-24 | 2021-06-25 | 山东华凌电缆有限公司 | Rated voltage 300/500V computer cable for passive nuclear power station and production method |
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