CN202093854U - Fireproof cable used in nuclear power station - Google Patents
Fireproof cable used in nuclear power station Download PDFInfo
- Publication number
- CN202093854U CN202093854U CN2011202123120U CN201120212312U CN202093854U CN 202093854 U CN202093854 U CN 202093854U CN 2011202123120 U CN2011202123120 U CN 2011202123120U CN 201120212312 U CN201120212312 U CN 201120212312U CN 202093854 U CN202093854 U CN 202093854U
- Authority
- CN
- China
- Prior art keywords
- cable core
- cable
- power station
- nuclear power
- fireproof
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
A fireproof cable used in a nuclear power station comprises a combined cable core consisting of three insulating cable cores which are twisted together, wherein a filler is arranged on the combined cable core, and an outer sheath is wrapped at the periphery of the filler; each of the three insulating cable cores comprises a cable core conductor, an isolating layer and an insulating layer sequentially from inside to outside, the isolating layer is formed by wrapping a mica tape, the insulating layer and the outer sheath are made from ceramic fireproof silicone rubber, and the filler is made from low-smoke zero-halogen flame-retardant polyolefin; and the cable core conductors of the three insulating cable cores are formed by regularly twisting wire harnesses consisting of tinned copper single filaments in the left direction, and the ratio of pitch diameters of all twisting layers of the cable core conductors follows the rule of 9 plus 2 from the outer layers to the inner layers. The fireproof cable used in the nuclear power station has the advantages of simple manufacturing technology, lower cost, small size, light weight and superior fire resistance, and is excellent in the performance of high-temperature resistance, high flame retardancy, corrosion prevention, low smoke, no halogen, innocuity and the like.
Description
Technical field
The utility model relates to cable, especially relates to the used in nuclear power station fireproof cable.
Background technology
Because the special environment for use of nuclear power station, operational outfit is required very high, nuclear level cable also must possess performances such as low cigarette, Halogen, nontoxic, fire-retardant, radiation hardness, heat-resisting, fire prevention except that possessing good electrical properties.
Application number provides a kind of mineral insulated cable for the patent documentation of CN200720144088.X, its insulating barrier is closely knit magnesia powder packed layer, but conventional mineral insulated cable need pass through highly difficult technological processes such as can, copper sheath, drawing, production cost height; Application number provides a kind of Speical flame retardant cable for the patent documentation of CN89104136.2, and its insulating barrier and restrictive coating have added the fire-retardant thing of special preparation, and this fire-retardant composition formula is complicated, and cost is higher; Application number provides the polyvinyl chloride insulation fireproof cable for patent documentations such as CN200920105951.X and CN200920009956.2, and polyvinyl chloride has anti-flammability, but its thermal endurance is relatively poor, at high temperature can softening transform.
The utility model content
At the prior art above shortcomings, the applicant provides a kind of have high temperature resistant, high flame retardant, anticorrosion, low cigarette, Halogen, used in nuclear power station fireproof cable nontoxic, highly excellent properties such as softness and radiation hardness.As oversheath, cable core cable core conductor adopts special stranded mode to the utility model with pottery fire-resistant silicon rubber vulcanized elastomer, the conductivity height, and production technology is simple, and volume is little, and is in light weight, and cost is low, the fireproof superior performance.
The technical solution of the utility model is as follows:
The used in nuclear power station fireproof cable comprises the combination cable core, and described combination cable core thoroughly does away with the edge cable core by three and constitutes through stranded, on described combination cable core inserts is set, at the periphery of described inserts parcel oversheath;
Described three thoroughly do away with the edge cable core comprises cable core conductor, separator, insulating barrier respectively from inside to outside successively, and described separator constitutes by mica tape is wrapped, and wrapped Duplication is more than or equal to 20%; Described insulating barrier and oversheath are made of pottery fire-resistant silicon rubber vulcanized elastomer material respectively; Described inserts constitutes for the low smoke halogen-free flame-retardant polyolefin material.
The bunch that the described three cable core conductors that thoroughly do away with the edge cable core adopt tin-coated copper monofilament formation is according to the regular stranded formation of left-hand, and the stranded pitch diameter ratio of described each layer of cable core conductor is deferred to 9 by skin successively to internal layer respectively and added 2 rule.
The utility model beneficial technical effects is:
1, in the utility model, the insulating barrier and the oversheath of insulation cable core are potteryization fire-resistant silicon rubber vulcanized elastomer, and the specific insulation of potteryization fire-resistant silicon rubber reaches 2 * 10
16Ω * cm; oxygen index is 42; both had extraordinary electrical insulation capability; possess excellent fireproof, fire-retardant, low cigarette, Halogen, performance such as nontoxic again, the residue after its burning is the ceramic-like duricrust simultaneously, duricrust not fusion under 600 ~ 1300 ℃ of high temperature; do not drip; guaranteed that circuit is unimpeded under the situation of fire, played firm protective effect, try to gain time precious to one for personnel escape or system's control.Pottery chemoprevention fire fire-resistant silicon rubber is after sulfuration, and mechanical strength promotes greatly.Adopt this design can save highly difficult technological processes such as the can of conventional mineral insulated cable, copper sheath, drawing.
2, the separator of edge cable core of the present utility model is a synthetic mica tape, and the synthetic mica tape coefficient of expansion is little, and dielectric strength is big, the resistivity height, and dielectric constant is even, thermal endurance class height particularly, heatproof can reach the fire-resistant level of A level greater than 1000 ℃.
3, of the present utility model three inserts that thoroughly do away with between the edge cable cores are low-smoke non-halogen flame-retardant oil resistant polyolefin insulation material, this mechanical strength height, and softness is good, excellent in flame retardance, electrical property, oil resistance are good.
Description of drawings
Fig. 1 is the utility model schematic diagram.
Among the figure: 1, cable core conductor; 2, separator; 3, insulating barrier; 4, inserts; 5, oversheath.
Specific implementation method
See Fig. 1, the utility model comprises combination cable core, inserts 4 and oversheath 5, and the combination cable core thoroughly does away with the edge cable core by three and constitutes through stranded, and the insulation cable core comprises cable core conductor 1, separator 2, insulating barrier 3 respectively from inside to outside successively.Separator 2 constitutes by synthetic mica tape is wrapped, and wrapped Duplication is more than or equal to 20%.The insulation cable core is behind stranded formation combination cable core, and perfusion inserts 4 is provided with oversheath 5 in inserts 4 peripheries on the combination cable core.
Insulating barrier 3 and oversheath 5 are commercially available potteryization fire-resistant silicon rubber, and the specific insulation of potteryization fire-resistant silicon rubber reaches 2 * 10
16Ω * cm; oxygen index is 42; both had extraordinary electrical insulation capability; possess excellent fireproof, fire-retardant, low cigarette, Halogen, performance such as nontoxic again, the residue after its burning is the ceramic-like duricrust simultaneously, duricrust not fusion under 600 ~ 1300 ℃ of high temperature; do not drip; guaranteed that circuit is unimpeded under the situation of fire, played firm protective effect, try to gain time precious to one for personnel escape or system's control.Pottery chemoprevention fire fire-resistant silicon rubber is after sulfuration, and mechanical strength promotes greatly. Be arranged on three inserts 4 that thoroughly do away with on the edge cable core and be the low smoke halogen-free flame-retardant polyolefin material, adopt the extrusion process parcel.
The three cable core conductors 1 that thoroughly do away with the edge cable core adopt the bunch of tin-coated copper monofilament formation according to the regular stranded formation of left-hand.Its arrangement architecture is: innermost layer is 1 bunch or tinned copper wire, evenly distributed 6 bunch of inferior internal layer or tinned copper wire, and every layer increases by 6 bunch or tinned copper wire when outside again, stranded mode is regular arrangement concentric stranding, and stranded lay ratio is followed successively by 9,11 from outside to inside, 13,15 ...
The line footpath of the stranded number of plies of above-mentioned cable core conductor (or the cable core cross-sectional area of conductor is long-pending) and tinned copper wire or bunch by the current capacity of cable according to the conventional design value.The multiple strand equipment of the pack equipment of bunch and cable is conventional equipment.
Each structure sheaf of above-mentioned separator, insulating barrier adopts common process to make, and comprises the sulfuration process and the described polyolefinic cross-linking radiation technology of described silicon rubber.Above-mentioned each material all adopts marketable material.
Claims (3)
1. the used in nuclear power station fireproof cable comprises the combination cable core, it is characterized in that:
Described combination cable core thoroughly does away with the edge cable core by three and constitutes through stranded, on described combination cable core inserts is set, at the periphery of described inserts parcel oversheath;
Described three thoroughly do away with the edge cable core comprises cable core conductor, separator, insulating barrier respectively from inside to outside successively, and described separator constitutes by mica tape is wrapped; Described insulating barrier and oversheath are made of pottery fire-resistant silicon rubber material respectively; Described inserts constitutes for the low smoke halogen-free flame-retardant polyolefin material;
The described three cable core conductors that thoroughly do away with the edge cable core adopt the bunch of tin-coated copper monofilament formation according to the regular stranded formation of left-hand.
2. used in nuclear power station fireproof cable according to claim 1 is characterized in that the stranded pitch diameter ratio of described each layer of cable core conductor defers to 9 by skin successively to internal layer respectively and add 2 rule.
3. used in nuclear power station fireproof cable according to claim 1 is characterized in that the wrapped Duplication of described mica tape is more than or equal to 20%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202123120U CN202093854U (en) | 2011-06-22 | 2011-06-22 | Fireproof cable used in nuclear power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202123120U CN202093854U (en) | 2011-06-22 | 2011-06-22 | Fireproof cable used in nuclear power station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202093854U true CN202093854U (en) | 2011-12-28 |
Family
ID=45368907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202123120U Expired - Fee Related CN202093854U (en) | 2011-06-22 | 2011-06-22 | Fireproof cable used in nuclear power station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202093854U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102800404A (en) * | 2012-08-24 | 2012-11-28 | 江苏南洋电缆有限公司 | Vitrified silicon rubber insulation fireproof cable |
| CN104103367A (en) * | 2013-04-10 | 2014-10-15 | 江苏远红电缆有限公司 | Novel flame-resistant cable |
| CN104575747A (en) * | 2013-10-13 | 2015-04-29 | 宁夏海洋线缆有限公司 | Cable with high fireproof performance |
| CN106448890A (en) * | 2016-08-31 | 2017-02-22 | 龙川秀康威达新型材料有限公司 | High-performance flexible fire-resistant cable |
-
2011
- 2011-06-22 CN CN2011202123120U patent/CN202093854U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102800404A (en) * | 2012-08-24 | 2012-11-28 | 江苏南洋电缆有限公司 | Vitrified silicon rubber insulation fireproof cable |
| CN104103367A (en) * | 2013-04-10 | 2014-10-15 | 江苏远红电缆有限公司 | Novel flame-resistant cable |
| CN104575747A (en) * | 2013-10-13 | 2015-04-29 | 宁夏海洋线缆有限公司 | Cable with high fireproof performance |
| CN106448890A (en) * | 2016-08-31 | 2017-02-22 | 龙川秀康威达新型材料有限公司 | High-performance flexible fire-resistant cable |
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Legal Events
| 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111228 Termination date: 20160622 |