CN209912597U - Ultraviolet irradiation resistant nuclear-grade lighting cable - Google Patents
Ultraviolet irradiation resistant nuclear-grade lighting cable Download PDFInfo
- Publication number
- CN209912597U CN209912597U CN201920854003.XU CN201920854003U CN209912597U CN 209912597 U CN209912597 U CN 209912597U CN 201920854003 U CN201920854003 U CN 201920854003U CN 209912597 U CN209912597 U CN 209912597U
- Authority
- CN
- China
- Prior art keywords
- flame
- wrapping
- retardant
- cable
- conductor
- 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.)
- Active
Links
Images
Landscapes
- Insulated Conductors (AREA)
- Ropes Or Cables (AREA)
Abstract
A nuclear-grade lighting cable resistant to ultraviolet irradiation has the structure that: the cable core is sequentially provided with a wrapping layer and a sheath from inside to outside; the cable core is formed by twisting the flame-retardant high-temperature filling rope and at least three wire cores, and the pitch-diameter ratio of the twisting is not more than 30; the wire core is composed of a single conductor with an insulating layer; each conductor is formed by twisting bare copper monofilaments, and the pitch-diameter ratio range of the conductor is as follows: 15-20, the diameter range of the copper monofilament is as follows: 0.68 mm-1.7 mm, the diameter range of the conductor is 2.0 mm-4.9 mm; the stranding direction of the bare copper monofilaments is the left direction; the insulating layer is formed by double-layer co-extruded anti-ultraviolet crosslinked polyethylene and flame-retardant crosslinked polyolefin insulation outside the conductor; when the cable core is cabled, the stranding directions of the flame-retardant high-temperature filling rope and the cable core are the same; the cabling outer wrapping layer is formed by overlapping and wrapping low-smoke halogen-free flame-retardant wrapping tapes; the sheath layer is formed by extruding and wrapping ultraviolet-proof low-smoke halogen-free flame-retardant thermoplastic sheath materials outside the cable core.
Description
Technical Field
The utility model relates to a nuclear level lighting cable, in particular to nuclear level lighting cable of resistant ultraviolet irradiation is applicable to rated voltage 0.6/1 kV's power cable, belongs to cable technical field.
Background
In the design of a nuclear-grade cable in the prior art, the thermal aging and radiation aging performance is mainly considered, and the ultraviolet light resistance of the cable is not specially researched. With the technical progress, in the use scene of the nuclear power station, a cable can bear the special occasion of ultraviolet irradiation, which puts new requirements on the cable design.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved is as follows: the problem that the common nuclear-grade cable cannot tolerate ultraviolet light is solved.
Technical scheme adopted for solving the technical problems
The utility model provides a nuclear-grade lighting cable with ultraviolet irradiation resistance, which can not only meet the electrical performance and the mechanical performance, but also meet the 60-year service life of the nuclear-grade cable; can meet the requirements of low smoke, zero halogen and flame retardance; the heat aging resistance and the high-dose irradiation aging resistance are excellent; meanwhile, the long-term ultraviolet irradiation resistance can be met.
In order to achieve the technical purpose, the utility model adopts the following technical scheme:
a nuclear-grade lighting cable resistant to ultraviolet irradiation has the structure that: the cable core is sequentially provided with a wrapping layer and a sheath from inside to outside;
the cable core is formed by twisting the flame-retardant high-temperature filling rope and at least three wire cores, and the pitch-diameter ratio of the twisting is not more than 30; each wire core surrounds the same axis, and a bundle of flame-retardant high-temperature filling ropes is arranged at the axis; a bundle of flame-retardant high-temperature filling ropes is arranged between the adjacent wire cores; the wire core is formed by double-layer co-extruded ultraviolet-proof crosslinked polyethylene and flame-retardant crosslinked polyolefin insulation outside the conductor; each conductor is formed by twisting bare copper monofilaments, and the twisting pitch-diameter ratio range is as follows: 15-20, the diameter range of the bare copper monofilament is as follows: 0.68 mm-1.7 mm, the diameter range of the conductor is 2.0 mm-4.9 mm; the stranding direction of the bare copper monofilaments at the outermost layer is the left direction, and the stranding directions of the bare copper monofilaments at the adjacent layers are opposite; the insulating layer is formed by double-layer co-extruded anti-ultraviolet crosslinked polyethylene and flame-retardant crosslinked polyolefin insulation outside the conductor; the wrapping layer is composed of a low-smoke halogen-free flame-retardant wrapping tape, the wrapping direction is leftward, and the wrapping covering rate is not less than 20%; when the cable core is cabled, the stranding directions of the flame-retardant high-temperature filling rope and the cable core are the same; the sheath is formed by extruding and wrapping ultraviolet-proof low-smoke halogen-free flame-retardant thermoplastic sheath materials outside the cable core.
Further, the number of the conductors with the insulating layers is 3-4.
Furthermore, the filling is a low-smoke halogen-free flame-retardant filling material. The low-smoke halogen-free flame-retardant material is a flame-retardant high-temperature filling rope material.
Further, the thickness of the insulating layer meets the requirement of GB/T12706. The insulation material can be selected from ultraviolet-proof cross-linked polyethylene and ultraviolet-proof flame-retardant cross-linked polyolefin insulation, such as: the trade mark is FPE150-3+ the trade mark is FPW 125-5A.
Further, the nominal thickness of the low-smoke halogen-free flame-retardant wrapping tape is 0.2 mm; the lapping rate is not less than 20%.
Further, the minimum thickness of the sheath is 1.8 mm. The low-smoke halogen-free flame-retardant thermoplastic sheath material can be made of anti-ultraviolet polyolefin materials, such as: under the designation HW 461.
Advantageous effects
After the technical scheme is adopted, the utility model discloses following beneficial effect has:
(1) the cable structure has simple and reasonable design: the core wires arranged circumferentially and the filling are stranded into the cable core, the processing is convenient, and the stranded cable core is firm.
(2) The stranded bare copper conductor improves the conductivity of the conductor.
(3) The flame-retardant high-temperature filling rope has better flame-retardant effect than other filling ropes, so that the cable has better low-smoke halogen-free flame retardant property.
(4) The ultraviolet-proof type insulation is matched with the ultraviolet-proof type sheath, so that the cable can have the performance of resisting ultraviolet irradiation for a long time.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1. conductor, 2 insulating layers, 3 filling, 4 wrapping layers, 5 sheath.
Detailed Description
As shown in fig. 1, the present embodiment is a nuclear-grade lighting cable resistant to ultraviolet light, and its structure is: the cable core is sequentially provided with a wrapping layer and a sheath from inside to outside;
the cable core is formed by twisting the flame-retardant high-temperature filling rope and at least three wire cores, and the pitch-diameter ratio of the twisting is not more than 30;
the wire core is formed by double-layer co-extruded ultraviolet-proof crosslinked polyethylene and flame-retardant crosslinked polyolefin insulation outside the conductor; each conductor is formed by twisting bare copper monofilaments, and the twisting pitch-diameter ratio range is as follows: 15-20, the diameter range of the bare copper monofilament is as follows: 0.68 mm-1.7 mm, the diameter range of the conductor is 2.0 mm-4.9 mm; the stranding direction of the bare copper monofilaments at the outermost layer is the left direction, and the stranding directions of the bare copper monofilaments at the adjacent layers are opposite;
the insulating layer is formed by double-layer co-extruded anti-ultraviolet crosslinked polyethylene and flame-retardant crosslinked polyolefin insulation outside the conductor;
the wrapping layer is composed of a low-smoke halogen-free flame-retardant wrapping tape, the wrapping direction is leftward, and the wrapping covering rate is not less than 20%; when the cable core is cabled, the stranding directions of the flame-retardant high-temperature filling rope and the cable core are the same;
the sheath is formed by extruding and wrapping ultraviolet-proof low-smoke halogen-free flame-retardant thermoplastic sheath materials outside the cable core.
The flame-retardant high-temperature filling rope does not contain harmful substances such as glass fibers, asbestos, halogen and the like, and meets the ROHS detection standard. The flame-retardant high-temperature filling rope has the characteristics of high temperature resistance, super softness, good flame-retardant performance (the oxygen index is more than 40), high strength and the like.
After the scheme is adopted, the lighting cable has excellent electrical property and mechanical property, and can meet the 60-year service life of a nuclear-grade cable; can meet the requirements of low smoke, zero halogen and flame retardance; the heat aging resistance and the high-dose irradiation aging resistance are excellent; meanwhile, the long-term ultraviolet irradiation resistance can be met.
The detection results of the cable of this example are as follows:
Claims (5)
1. the utility model provides a nuclear level lighting cable of resistant ultraviolet irradiation which characterized by structure is: the cable core is sequentially provided with a wrapping layer and a sheath from inside to outside; the diameter range of the cable is 11.1 mm-23.5 mm;
the cable core is formed by twisting a flame-retardant high-temperature filling rope and at least three wire cores, and the pitch-diameter ratio of the twisting is not more than 30; each wire core surrounds the same axis, and a bundle of flame-retardant high-temperature filling ropes is arranged at the axis; a bundle of flame-retardant high-temperature filling ropes is arranged between the adjacent wire cores; the stranding directions of the flame-retardant high-temperature filling rope and the wire core are the same;
the wire core is formed by wrapping an insulating layer outside a conductor; the insulating layer has two layers, namely an ultraviolet-proof cross-linked polyethylene insulating layer and an ultraviolet-proof flame-retardant cross-linked polyolefin insulating layer from inside to outside in sequence;
each conductor is formed by twisting bare copper monofilaments, the ratio of the twisting pitch diameter ranges from 15 mm to 20, the diameter range of the bare copper monofilaments ranges from 0.68mm to 1.7mm, and the diameter range of the conductor ranges from 2.0mm to 4.9 mm; the stranding direction of the bare copper monofilaments at the outermost layer is the left direction, and the stranding directions of the bare copper monofilaments at the adjacent layers are opposite;
the wrapping layer is formed by wrapping a low-smoke halogen-free flame-retardant wrapping tape, the wrapping direction is leftward, and the wrapping covering rate is not less than 20%;
the sheath is formed by extruding and wrapping ultraviolet-proof low-smoke halogen-free flame-retardant thermoplastic sheath materials outside the cable core.
2. The ultraviolet light resistant nuclear grade lighting cable of claim 1 wherein the number of cores is 3 or 4.
3. The ultraviolet light resistant nuclear grade lighting cable of claim 1, wherein the low smoke, halogen free, flame retardant tape has a nominal thickness of 0.2 mm.
4. The ultraviolet light resistant nuclear grade lighting cable of claim 1 wherein the minimum thickness of the jacket is 1.8 mm.
5. The ultraviolet light resistant nuclear grade lighting cable of claim 1 wherein the insulating layer is a double layer co-extruded structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920854003.XU CN209912597U (en) | 2019-06-06 | 2019-06-06 | Ultraviolet irradiation resistant nuclear-grade lighting cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920854003.XU CN209912597U (en) | 2019-06-06 | 2019-06-06 | Ultraviolet irradiation resistant nuclear-grade lighting cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209912597U true CN209912597U (en) | 2020-01-07 |
Family
ID=69049944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920854003.XU Active CN209912597U (en) | 2019-06-06 | 2019-06-06 | Ultraviolet irradiation resistant nuclear-grade lighting cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209912597U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113903515A (en) * | 2021-08-25 | 2022-01-07 | 安徽电缆股份有限公司 | Ultraviolet irradiation resistant nuclear-grade cable wrapping shell |
-
2019
- 2019-06-06 CN CN201920854003.XU patent/CN209912597U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113903515A (en) * | 2021-08-25 | 2022-01-07 | 安徽电缆股份有限公司 | Ultraviolet irradiation resistant nuclear-grade cable wrapping shell |
| CN113903515B (en) * | 2021-08-25 | 2023-09-19 | 安徽电缆股份有限公司 | Nuclear-grade cable wrapping shell resistant to ultraviolet irradiation |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104715840B (en) | The maritime platform essential safe type oil resistant fireproof cable of resistance to mud and preparation technology | |
| CN109411116B (en) | High flame-retardant railway signal cable | |
| CN102332336A (en) | Heat-resistant shielded power cable for nuclear power stations | |
| CN213781632U (en) | Special control cable with ozone resistance for offshore wind turbine | |
| CN102332331A (en) | Heat-resistant control cable utilized by nuclear power station | |
| CN101853716B (en) | High-flame-resistance environment-friendly refractory control cable for nuclear power station | |
| CN209912597U (en) | Ultraviolet irradiation resistant nuclear-grade lighting cable | |
| CN211181711U (en) | Radiation-resistant, wear-resistant, flame-retardant and environment-friendly cable | |
| CN205645366U (en) | Third generation is low voltage power cable for nuclear power station | |
| CN205645390U (en) | Third generation is instrument cable for nuclear power station | |
| CN202093880U (en) | Heat-resisting and shielding type power cable used for nuclear power station | |
| CN218849155U (en) | Cross-linked PE insulated multilayer shielding anti-ultraviolet low-smoke halogen-free offshore platform communication cable | |
| CN204423958U (en) | The maritime platform essential safe type oil resistant fireproof cable of resistance to mud | |
| CN207624400U (en) | A kind of long-life strong radiation resistant instrument cable used under harsh environment | |
| CN201758017U (en) | Low-smoke halogen-free environment-friendly flame-retardant intrinsic safety system control cable | |
| CN216647883U (en) | Waterproof flame-retardant cable | |
| CN202258491U (en) | High-flame-retardance and environment-friendly fire-resistant control cable for nuclear power plant | |
| CN214956077U (en) | Anti-static and super-flexible special composite cable | |
| CN212782825U (en) | Low temperature resistant control cable for nuclear power station | |
| CN209912588U (en) | Rubber wind energy cable | |
| CN209216604U (en) | A kind of light-duty copper core copper sheath mineral insulated cable | |
| CN206388535U (en) | A kind of wind speed, wind transducer private cable | |
| CN207302732U (en) | A kind of long-life lv power cable of resistance to intense radiation | |
| CN214796843U (en) | Long-life low temperature resistant nuclear power station gentle environmental non-1E level power cable | |
| CN214796852U (en) | High-temperature-resistant instrument cable for nuclear power station gentle environment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |