CN202093865U - Heat resistant control cable for nuclear power station - Google Patents
Heat resistant control cable for nuclear power station Download PDFInfo
- Publication number
- CN202093865U CN202093865U CN2011202124886U CN201120212488U CN202093865U CN 202093865 U CN202093865 U CN 202093865U CN 2011202124886 U CN2011202124886 U CN 2011202124886U CN 201120212488 U CN201120212488 U CN 201120212488U CN 202093865 U CN202093865 U CN 202093865U
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- Prior art keywords
- cable
- power station
- nuclear power
- layer
- heat resistant
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Abstract
A heat resistant control cable for a nuclear power station comprises a combined cable core and a coating, wherein the combined cable core is formed by regularly intertwisting a cable core wire, the cable core wire includes a core wire conductor and a double-insulation layer wrapping the outside of the core wire conductor; the coating sequentially includes a polyolefin filler, a polyester isolating layer, a tinned copper braided shielding layer, a glass fiber fire retardant belt, a crosslinked polyethylene oxygen separation layer and a ceramic fire resistant silicon rubber outer sheath from inside to outside, and the filler is arranged on the intertwisting structure of the combined cable core; and the core wire conductor is formed by regularly intertwisting a tinned copper monofilament or a bunch composed thereof from left to right. The high insulating property of the cable is ensured, the fire resistant requirement of the cable is satisfied, the level of the operating temperature is greatly improved, the current-carrying capacity of the cable is increased, the operation power of the cable is increased, and the cable has the characteristics of excellent radiation resistance performance, low smoke performance and halogen free performance.
Description
Technical field
The utility model relates to cable, especially relates to a kind of used in nuclear power station control signal cable.
Background technology
The control signal cable of nuclear power station special use is compared with the control signal cable that general occasion is used, that requirement has is better heat-resisting, radiation hardness, moisture-proof, performance such as corrosion-resistant, the conductor minimum operating temperature that requires as nuclear power station all is 90 ℃, at the nuclear power station run duration, the radiation dose of the 10rad/h that cable can be continued, radiation dose can reach 70 * 10 in the state of accident
6Rad.In each big nuclear power station of having gone into operation at present and having built, the outer K3 nucleoid level cable of containment has begun progressively to domesticize, but the nuclear level cable of some hot operation occasions is big because of performance requirement height, manufacturing technology difficulty in the nuclear power station, also do not realize production domesticization fully, quite a few relies on import.
Application number is that the outermost layer sheath of the disclosed used in nuclear power station control signal of patent documentations such as CN200810138007.4, CN200620162415.X, CN200610042387.2, CN200910219914.6, CN201010187012.1 and CN200620072438.1 cable is modified thermoplastic resins such as cross-linking radiation polyolefin or polyethylene, these material oxygen index height, good flame resistance, can delay and block the flame development, but its resistance to elevated temperatures is relatively poor, is difficult to keep the complete of cable line under fire condition.
The utility model content
At the prior art above shortcomings, the applicant provides a kind of heat resistant type control cable for nuclear power station, it is used for the transmission of nuclear power station control signal, and it can bear higher working temperature and operate power, also has excellent radiation hardness, low cigarette, Halogen, performance such as nontoxic.
The technical solution of the utility model is as follows:
The utility model comprises combination cable core and coating layer: described combination cable core is made of according to regular stranded mode core, and described core comprises cored wire conductor and is wrapped in the double insulating layer formation of cored wire conductor periphery; Described coating layer comprises inserts, separator, screen, inhibiting tape, oxygen barrier layer and oversheath from inside to outside successively, and described inserts is arranged on the lay configuration of combination cable core.
Described cored wire conductor adopts the bunch of tin-coated copper monofilament formation according to the regular stranded formation of left-hand; Perhaps, the regular stranded formation of the two-layer employing tinned copper wire of described cored wire conductor outermost left-hand, the bunch that all the other each layer employing tinned copper wires constitute is according to the regular stranded formation of left-hand;
Further technical scheme is:
Described left-hand is regular when stranded, and the stranded pitch diameter ratio of each layer is deferred to 9 by skin successively to internal layer respectively and added 2 rule.
The described double insulating layer that is wrapped in the cored wire conductor periphery is: internal layer is heat-resisting silicon rubber, and skin is a fire retardant polyolefin.
The material of described coating layer structure is: inserts is the irradiated crosslinking low-smoke and halogen-free polyolefin; Separator is the heat-resistant polyester film; Screen is made of the tinned copper wire braiding; Inhibiting tape is the glass fibre belt material; Oxygen barrier layer is the irradiated crosslinking low-smoke and halogen-free flame retardant polyethylene; Oversheath is a potteryization fire-resistant silicon rubber material.
The utility model beneficial technical effects is:
1, to be wrapped in the insulating barrier of cored wire conductor periphery be double-decker to the utility model: internal layer is heat-resisting silicon rubber, and skin is a fire retardant polyolefin, and this design had both taken into account the fireproof requirement, had guaranteed the high insulating property of cable again.
2, the inserts of the utility model insulating barrier skin and coating layer is the irradiated crosslinking low-smoke and halogen-free polyolefin, this kind mechanical strength height, and softness is good, excellent in flame retardance, low smoke and zero halogen, electrical property, oil resistance are good.
3, the separator of the utility model coating layer is a polyester film, polyester film mechanical strength height, and good electrical property, rigidity, hardness and toughness height, endurable thorn, rub resistance, high temperature resistant and low temperature, chemical proofing, oil resistance are good.
4, the screen of the utility model coating layer adopts the tinned copper wire braiding to constitute, can be anticorrosion, and electric field shielding and magnetic field are not disturbed the transmission of electric power transfer and control signal mutually, and message transmission is accurate, reduces electric energy loss.
5, the inhibiting tape of the utility model coating layer is a glass fibre belt, and glass fibre belt pulling force extra-heavy is easy to wrappedly, can not fracture, and can improve the cable flexibility; Anti-sulfuration, insulating properties, good flame resistance, smokeless Halogen is nontoxic, is not subjected to the temperature difference, humidity effect.
6, the oxygen barrier layer of the utility model coating layer is the irradiated crosslinking low-smoke and halogen-free flame retardant polyethylene, this material low smoke and zero halogen, and electrical property, excellent in flame retardance, oil resistance and flexibility are good.
7, the oversheath of the internal layer of the utility model insulating barrier and coating layer is potteryization fire-resistant silicon rubber material, 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 breaking out of fire, played firm protective effect, try to gain time precious to one for personnel escape or system's control.
8, cored wire conductor adopts the bunch of tin-coated copper monofilament or its formation according to the regular stranded formation of left-hand, the bunch of tinned copper wire or its formation is soft, adopt left-hand bundle strand mode, it is flexible preferably that cable core conductor of the present utility model is had, this is because all to a direction twisting, when bending, the slip surplus is bigger between each single line, so the good bending property of bunch.The stranded lay ratio of each layer of the utility model cable core conductor deferred to 9 by skin successively to internal layer and added 2 rules, has moderate pitch diameter ratio, and bunch twists easy shaping again and makes the utility model that good flexibility be arranged, and left-hand bundle strand makes the copper bunch be not easy to scatter simultaneously.Otherwise lay ratio is too small, and bunch is not easy to be shaped; Lay ratio is excessive, and then combination cable is flexible can reduce.
Description of drawings
Fig. 1 is the utility model schematic diagram.
Among the figure: 1, conductor; 2, double insulating layer; 3, fill; 4, separator; 5, screen; 6, inhibiting tape; 7, oxygen barrier layer; 8, oversheath.
Specific implementation method
The utility model comprises combination cable core and coating layer: described combination cable core is made of according to regular stranded mode core, and described core comprises cored wire conductor 1 and is wrapped in double insulating layer 2 formations of cored wire conductor periphery; Described coating layer comprises inserts 3, separator 4, screen 5, inhibiting tape 6, oxygen barrier layer 7 and oversheath 8 from inside to outside successively, and described inserts 3 is arranged on the lay configuration of combination cable core.
Cored wire conductor 1 adopts the bunch of tin-coated copper monofilament formation according to the regular stranded formation of left-hand; Perhaps, the regular stranded formation of the two-layer employing tinned copper wire of cored wire conductor 1 outermost left-hand, the bunch that all the other each layer employing tinned copper wires constitute is according to the regular stranded formation of left-hand;
The bunch that above-mentioned tinned copper wire constitutes is regular stranded according to the regular left-hand stranded or tinned copper wire 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, 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 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.
The material of the double insulating layer 2 of insulated wire cores is: internal layer is the potteryization fire-resistant silicon rubber, and skin is the irradiated crosslinking low-smoke and halogen-free polyolefin;
The inserts 3 of coating layer is an irradiated crosslinking low-smoke and halogen-free polyolefin material;
The separator 4 of coating layer is the polyester film material;
The screen 5 of coating layer is made of the tinned copper wire braiding;
The inhibiting tape 6 of coating layer is the glass fibre belt material;
The oxygen barrier layer 7 of coating layer is an irradiated crosslinking low-smoke and halogen-free flame retardant polyethylene material;
The oversheath 8 of coating layer is a potteryization fire-resistant silicon rubber material.
Each structure sheaf of above-mentioned double insulating layer 2 and coating layer adopts common process to make, and comprises sulfuration process and the described polyethylene and the polyolefinic cross-linking radiation technology of described silicon rubber.Above-mentioned each material all adopts marketable material.
Claims (9)
1. used in nuclear power station heat resistant type control cable, it is characterized in that comprising combination cable core and coating layer: described combination cable core is made of according to regular stranded mode core, and the double insulating layer that described core comprises cored wire conductor and is wrapped in the cored wire conductor periphery constitutes; Described coating layer comprises inserts, separator, screen, inhibiting tape, oxygen barrier layer and oversheath from inside to outside successively, and described inserts is arranged on the lay configuration of combination cable core; Described cored wire conductor adopts the bunch of tin-coated copper monofilament formation according to the regular stranded formation of left-hand; Perhaps, the regular stranded formation of the two-layer employing tinned copper wire of described cored wire conductor outermost left-hand, the bunch that all the other each layer employing tinned copper wires constitute is according to the regular stranded formation of left-hand.
2. used in nuclear power station heat resistant type control cable according to claim 1 is characterized in that described left-hand is regular when stranded, and the stranded pitch diameter ratio of each layer is deferred to 9 by skin successively to internal layer respectively and added 2 rule.
3. used in nuclear power station heat resistant type control cable according to claim 1, it is characterized in that the described double insulating layer that is wrapped in the cored wire conductor periphery is: internal layer is heat-resisting silicon rubber, skin is a fire retardant polyolefin.
4. used in nuclear power station heat resistant type control cable according to claim 1, the inserts that it is characterized in that described coating layer are irradiated crosslinking low-smoke and halogen-free polyolefin material.
5. used in nuclear power station heat resistant type control cable according to claim 1, the separator that it is characterized in that described coating layer are heat-resistant polyester film material.
6. used in nuclear power station heat resistant type control cable according to claim 1 is characterized in that the screen of described coating layer is made of the tinned copper wire braiding.
7. used in nuclear power station heat resistant type control cable according to claim 1, the inhibiting tape that it is characterized in that described coating layer is the glass fibre belt material.
8. used in nuclear power station heat resistant type control cable according to claim 1, the oxygen barrier layer that it is characterized in that described coating layer are irradiated crosslinking low-smoke and halogen-free flame retardant polyethylene material.
9. used in nuclear power station heat resistant type control cable according to claim 1 is characterized in that the oversheath of described coating layer is potteryization fire-resistant silicon rubber material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202124886U CN202093865U (en) | 2011-06-22 | 2011-06-22 | Heat resistant control cable for nuclear power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202124886U CN202093865U (en) | 2011-06-22 | 2011-06-22 | Heat resistant control cable for nuclear power station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202093865U true CN202093865U (en) | 2011-12-28 |
Family
ID=45368918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202124886U Expired - Fee Related CN202093865U (en) | 2011-06-22 | 2011-06-22 | Heat resistant control cable for nuclear power station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202093865U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102332331A (en) * | 2011-06-22 | 2012-01-25 | 江苏天地龙电缆有限公司 | Heat-resistant control cable utilized by nuclear power station |
| CN107068250A (en) * | 2016-12-12 | 2017-08-18 | 无锡市明珠电缆有限公司 | Track traffic subway safe door power and signal transmission system private cable and preparation method thereof |
-
2011
- 2011-06-22 CN CN2011202124886U patent/CN202093865U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102332331A (en) * | 2011-06-22 | 2012-01-25 | 江苏天地龙电缆有限公司 | Heat-resistant control cable utilized by nuclear power station |
| CN107068250A (en) * | 2016-12-12 | 2017-08-18 | 无锡市明珠电缆有限公司 | Track traffic subway safe door power and signal transmission system private cable and preparation method thereof |
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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 |