CN207302732U - A kind of long-life lv power cable of resistance to intense radiation - Google Patents
A kind of long-life lv power cable of resistance to intense radiation Download PDFInfo
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- CN207302732U CN207302732U CN201721157562.2U CN201721157562U CN207302732U CN 207302732 U CN207302732 U CN 207302732U CN 201721157562 U CN201721157562 U CN 201721157562U CN 207302732 U CN207302732 U CN 207302732U
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Abstract
A kind of long-life lv power cable of resistance to intense radiation, its structure are：The outer from-inner-to-outer of cable core is equipped with lapping layer, liner layer and sheath successively；The cable core is twisted by low-smoke non-halogen flame-retardant filling rubber bar and at least both threads core and formed, and twisted lay ratio is not more than 18；The core is made of the conductor and twining package tape of single tape insulation layer；Every conductor is twisted by tin-coated copper monofilament and formed；The direction of lay that tin-coated copper monofilament is twisted is left-hand；The insulating layer is that the insulation of second third that low-smoke non-halogen flame-retardant is extruded by continuous vulcanization outside conductor is formed；The outer lapping layer of the insulation is formed by polyamide tape left-hand is wrapped；Low-smoke non-halogen flame-retardant filling rubber bar is identical with the direction of lay of core during cable core stranding；The outer lapping layer of the stranding wrapped is formed by low-smoke non-halogen flame-retardant twining package tape is overlapping；The liner layer is formed by extruding low-smoke non-halogen flame-retardant thermosetting property EVA material outside lapping layer；The restrictive coating is to extrude low-smoke non-halogen flame-retardant thermosetting property protective cover material by connecting sulphur outside liner layer to form.
Description
Technical field
It the utility model is related to a kind of lv power cable, the long-life low-voltage power electricity of more particularly to a kind of resistance to intense radiation
Cable, suitable for the lv power cable of rated voltage 0.6/1kV, belongs to field of cable technology.
Background technology
Environment mainly considers LOCA accident (coolant loss accident) condition in conventional two generations nuclear power plant containment shell, and
The gamma-ray irradiation dosage of 85Mrad.LOCA accident condition adds high-temperature time in three generations's nuclear power station, and whole experiment process is held
15 days continuous, gamma-ray irradiation dosage also increases to more than 150Mrad.So need to meet not with lv power cable in containment
The requirement of less than 60 years service life, tolerance conventional high dose gamma-ray irradiation, low-smoke non-halogen flame-retardant, and need to meet at the same time
Resistance to LOCA environmental requirements.The superposition of these conditions is abnormal cruel for cable.
Utility model content
Technical problems to be solved
For environmental condition such as in 60 year service life nuclear power plant containment shell, it is necessary to which 60 year service life for solving cable insulation material asks
Topic, resistance to y irradiation dose 150Mrad above irradiance problems, resistance to LOCA environmental problems.Meet the mechanical performance of cable and low at the same time
Environmental requirement such as cigarette, Halogen, fire-retardant etc..
The superposition of these conditions is abnormal cruel for cable, for this reason, inventor is to cable material, process structure
Particular design is carried out, eventually through all qualification tests.
To solve the technical solution that above-mentioned technical problem uses
The utility model provides a kind of long-life lv power cable of resistance to intense radiation, which disclosure satisfy that
60 years service life；It disclosure satisfy that the requirement of low-smoke non-halogen flame-retardant；Under high temperature or low temperature environment performance stablize, heat-proof aging and
High dosage irradiation ageing properties are excellent；Can normal use in LOCA accident in nuclear power plant containment shell.To realize above-mentioned technology mesh
, the utility model uses following technical scheme：
A kind of long-life lv power cable of resistance to intense radiation, the diameter range of cable is 9.0mm~60.5mm；Its structure
For：The outer from-inner-to-outer of cable core is equipped with lapping layer, liner layer and sheath successively；The cable core fills rubber bar by low-smoke non-halogen flame-retardant
At least both threads core is twisted composition, and twisted lay ratio is not more than 18；The core by single tape insulation layer conductor and around
Band is formed；Every conductor is twisted by tin-coated copper monofilament and formed, conductor lay ratio scope：18~30, the diameter of tin-coated copper monofilament
Scope：0.52mm~2.62mm, diameter range 1.6mm~20.6mm of conductor；The direction of lay outermost that tin-coated copper monofilament is twisted
Layer is left-hand；The insulating layer is that the insulation of second third that low-smoke non-halogen flame-retardant is extruded by continuous vulcanization outside conductor is formed；Described is exhausted
The outer lapping layer of edge is formed by polyamide tape left-hand is wrapped；Low-smoke non-halogen flame-retardant filling rubber bar and core during cable core stranding
Direction of lay is identical；The outer lapping layer of the stranding wrapped is formed by low-smoke non-halogen flame-retardant twining package tape is overlapping；The liner layer is
Formed by extruding low-smoke non-halogen flame-retardant thermosetting property EVA material outside lapping layer；The restrictive coating be by connect outside liner layer sulphur extrude it is low
Cigarette halogen-free flameproof thermosetting property protective cover material is formed.
Further, the number of the conductor with insulating layer is 1~5.
Further, the outer lapping layer of the insulation is made of Kapton, and Kapton lapping direction is
Left-hand, wrapped width of putting up are not less than 5mm.
Further, filling is low-smoke non-halogen flame-retardant packing material.Halogen-free low-smoke flame retardant material selects low-smoke non-halogen flame-retardant rubber
Leather strap.
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 material, such as：XJ-32HB type cable insulating materials.
Further, the nominal thickness of the low-smoke non-halogen flame-retardant twining package tape is 0.2mm；Wrapped width of putting up is not less than 5mm.
Further, the minimum thickness of the sheath is 1.8mm.Low-smoke non-halogen flame-retardant thermosetting property protective cover material can select EVA
Class material, such as：XH-32HB type protective cover materials.
Beneficial effect
After adopting the above technical scheme, the utility model has the advantages that：
(1) Cable Construction Design advantages of simple：The cored wire of more circumferential arrangements and filling are twisted into cable core, easy to process,
And twisted cable core is firm.Every conductor tyre insulating layer, lapping layer, improve the insulating properties and radiation-resistant property of cable.Increase
Cable not only increases cable radiation resistance and also reduces insulated wire cores flattening after Kapton lapping layer
Risk.And whole cable core processing is more convenient, cable core more rounding.
(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 bar, can fit closely core, and irregular shape is deformed into gap, so that
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, the environment of resistance to LOCA, 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 and small 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 resistance to 60 year service life core
Environment in power plant safety shell.
Brief description of the drawings
Fig. 1 is the structure diagram of the utility model.
In figure：1st, conductor, the 2, first lapping layer, 3, insulating layer, 4, filling rubber bar, the 5, second lapping layer, 6, liner layer,
7th, sheath.
Embodiment
As shown in Figure 1, a kind of long-life lv power cable of resistance to intense radiation, its structure are：The outer from-inner-to-outer of cable core according to
It is secondary to be equipped with the second lapping layer, liner layer and sheath；The diameter range of cable is 9.0mm~60.5mm；
The cable core is twisted by least both threads core and is formed with the filling rubber bar of low-smoke non-halogen flame-retardant, twisted lay ratio
No more than 18；Each core surrounds same axis, and a filling rubber bar is equipped with axial location；One is equipped between adjacent core
Root fills rubber bar；
The core is made of the conductor and the first twining package tape of single tape insulation layer；
Every conductor is twisted by tin-coated copper monofilament and formed, and is twisted lay ratio scope：18~30, the diameter model of tin-coated copper monofilament
Enclose：0.52mm~2.62mm, diameter range 1.6mm~20.6mm of conductor；The direction of lay outermost layer that tin-coated copper monofilament is twisted
It is opposite for left-hand, the direction of lay of the tin-coated copper monofilament of adjacent layer；
The insulating layer is that the third Insulation Material of second that low-smoke non-halogen flame-retardant is extruded by continuous vulcanization outside conductor is formed；
First lapping layer is formed by polyamide tape left-hand is wrapped, and wrapped width of putting up is not less than 5mm；
A diameter of 2.0mm~4.0mm of the filling rubber bar；
Low-smoke non-halogen flame-retardant filling rubber bar is identical with the direction of lay of core during cable core stranding；
Second lapping layer be by low-smoke non-halogen flame-retardant twining package tape it is overlapping it is wrapped form, it is overlapping wrapped wrapped to put up width
Degree is not less than 5mm；
The liner layer is formed by extruding low-smoke non-halogen flame-retardant thermosetting property EVA material outside the second lapping layer；
The sheath is to extrude low-smoke non-halogen flame-retardant thermosetting property protective cover material by connecting sulphur outside liner layer to form.
In this example：
The core can be 1~5；Insulation Material is low-smoke non-halogen flame-retardant ethylene-propylene rubber insulated material；The polyimides
The width of band is 15mm；The filling rubber bar is non-hard rubber bar.
The nominal thickness of the low-smoke non-halogen flame-retardant twining package tape is 0.2mm.
It is that the thickness range that the liner layer is is 0.8mm~1.4mm；
The minimum thickness of the sheath is 1.8mm；Protective cover material is EVA class protective cover materials.
After using the above scheme, the service life of the long-life lv power cable of resistance to intense radiation reaches more than 60 years, curved
Qu Xingneng is good, anti-high radiation property is good, processing performance is good, can be with the environment of resistance to LOCA.And meet low cigarette, Halogen, fire-retardant base at the same time
This requirement.
The mechanical performance related generally under electrical property, nuclear environment of this example cable and the ageing properties detection knot under nuclear environment
Fruit such as following table.
Claims (5)
- A kind of 1. long-life lv power cable of resistance to intense radiation, it is characterized in that structure is：The outer from-inner-to-outer of cable core is equipped with successively Second lapping layer, liner layer and sheath；The diameter range of cable is 9.0mm~60.5mm；The cable core is twisted by least both threads core and is formed with the filling rubber bar of low-smoke non-halogen flame-retardant, and twisted lay ratio is little In 18；Each core surrounds same axis, and a filling rubber bar is equipped with axial location；Filled out between adjacent core equipped with one Fill rubber bar；The core is made of the conductor and the first twining package tape of single tape insulation layer；Every conductor is twisted by tin-coated copper monofilament and formed, and is twisted lay ratio scope：18~30, the diameter range of tin-coated copper monofilament： 0.52mm~2.62mm, diameter range 1.6mm~20.6mm of conductor；The direction of lay outermost layer that tin-coated copper monofilament is twisted is a left side To the direction of lay of the tin-coated copper monofilament of adjacent layer is opposite；The insulating layer is that the third Insulation Material of second that low-smoke non-halogen flame-retardant is extruded by continuous vulcanization outside conductor is formed；First lapping layer is formed by polyamide tape left-hand is wrapped, and wrapped width of putting up is not less than 5mm；A diameter of 2.0mm~4.0mm of the filling rubber bar；Low-smoke non-halogen flame-retardant filling rubber bar is identical with the direction of lay of core during cable core stranding；Second lapping layer be by low-smoke non-halogen flame-retardant twining package tape it is overlapping it is wrapped form, it is overlapping wrapped wrapped to put up width not Less than 5mm；The liner layer is formed by extruding low-smoke non-halogen flame-retardant thermosetting property EVA material outside the second lapping layer；The sheath is to extrude low-smoke non-halogen flame-retardant thermosetting property protective cover material by connecting sulphur outside liner layer to form.
- 2. the long-life lv power cable of resistance to intense radiation according to claim 1, it is characterized in that the core is 1~5 Root；Insulation Material is low-smoke non-halogen flame-retardant ethylene-propylene rubber insulated material；The width of the polyamide tape is 15mm；The filling rubber Bar is non-hard rubber bar.
- 3. the long-life lv power cable of resistance to intense radiation according to claim 1, it is characterized in that the low smoke and zero halogen hinders The nominal thickness for firing twining package tape is 0.2mm.
- 4. the long-life lv power cable of resistance to intense radiation according to claim 1, it is characterized in that the liner layer is yes Thickness range is 0.8mm~1.4mm.
- 5. the long-life lv power cable of resistance to intense radiation according to claim 1, it is characterized in that the minimum of the sheath Thickness is 1.8mm；Protective cover material is EVA class protective cover materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721157562.2U CN207302732U (en) | 2017-09-11 | 2017-09-11 | A kind of long-life lv power cable of resistance to intense radiation |
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| CN201721157562.2U CN207302732U (en) | 2017-09-11 | 2017-09-11 | A kind of long-life lv power cable of resistance to intense radiation |
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| CN207302732U true CN207302732U (en) | 2018-05-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109148005A (en) * | 2018-10-16 | 2019-01-04 | 睿康文远电缆股份有限公司 | power cable for wind power generation |
-
2017
- 2017-09-11 CN CN201721157562.2U patent/CN207302732U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109148005A (en) * | 2018-10-16 | 2019-01-04 | 睿康文远电缆股份有限公司 | power cable for wind power generation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20181211 Address after: No. 68 Shangshang Road, Liyang City, Changzhou City, Jiangsu Province Co-patentee after: China Nuclear Power Engineering Co., Ltd. Patentee after: Jiangsu Shangshang Cable Group Co., Ltd. Address before: No. 68 Shangshang Road, Liyang City, Changzhou City, Jiangsu Province Patentee before: Jiangsu Shangshang Cable Group Co., Ltd. |
|
| TR01 | Transfer of patent right |