CN204966082U - High fire -retardant power cable of environment -friendly - Google Patents
High fire -retardant power cable of environment -friendly Download PDFInfo
- Publication number
- CN204966082U CN204966082U CN201520794587.8U CN201520794587U CN204966082U CN 204966082 U CN204966082 U CN 204966082U CN 201520794587 U CN201520794587 U CN 201520794587U CN 204966082 U CN204966082 U CN 204966082U
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- cable
- retardant
- fire
- insulating layer
- inner insulating
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Abstract
The utility model discloses a high fire -retardant power cable of environment -friendly, characterized by adopt single metallic conductor, or by the metallic conductor that many electrician's wire transposition constitute, do not form the inner insulating layer and external insulation layer constitution insulation core through crowded guaranteeing job assignments on metallic conductor to single insulation core is the cable core, or by many insulation core transposition strandings and fill fire -retardant gasket for packing and constitute the cable core, at the skin of cable core, what set gradually from inside to outside is around wrapping the fine lacing of glass, indulging the alclad lacing to and crowded package environmental protection flame retardant plastics oversheath layer, the inner insulating layer uses high density polyethylene to be 0.20 -0.35mm as material, the inner insulating layer's thickness. The utility model discloses have good electric insulation performance and fire -retardant security performance, improved the quality and the operational safety of fire -retardant type high cable.
Description
Technical field
The utility model relates to a kind of power cable, particularly relates to a kind of environment-friendly high fire-retardant power cable, belongs to technical field of electric wires and cables.
Background technology
Electric wire is the auxiliary products of transmission & distribution electric energy, Signal transmissions or electromagnetic conversion.Along with the raising of the automaticity of electrical equipment and the increase of mechanical output, the electric wire connecting electrical equipment gets more and more.In engineer applied, be all that electric wire bunchy is installed together.Due to electric wire transferring electric power meeting heat-dissipating, the installation of numerous cable bunchy can cause accumulation of heat, adds unsafe factor, and therefore, the fire resistance of electric wire is one of important indicator.
According to the safety requirements laying occasion, the fire resistance of electric wire is divided into A, B, C, D tetra-grades from high to lower.Flame retardant cable of the prior art is in order to improve fire resistance etc. and adopt high flame retardant insulation and high flame retardant sheath material often, but inorganic, organic fire-retardant is added in the raising of the fire resistance of its insulating material in insulating material, therefore while fire resistance improves, reduce electrical property, in fact this have influence on the fail safe of cable.
Utility model content
The utility model is the weak point for avoiding existing for above-mentioned prior art, there is provided a kind of and there is good electrical insulation properties, flame-retarding performance, and the environment-friendly high fire-retardant power cable that cost performance is high, to improving quality and the safety in operation of fire-retardant class cable.
The utility model is that technical solution problem adopts following technical scheme:
The design feature of the utility model environment-friendly high fire-retardant power cable adopts single piece of metal conductor, or by the many stranded metallic conductors formed of electrician's wire, described metallic conductor forms inner insulating layer and external insulation layer formation insulated wire cores respectively by extruding, with single insulated wire cores for cable core, or filled flame resistant filler rope formed cable core by many insulated wire cores twisted synthesizing cables; At the skin of described cable core, what set gradually from inside to outside is wrapped glass belt, vertical alclad belt, and extrudes environmental protection flame retardant plastic sheath layer, and described inner insulating layer take high density polyethylene (HDPE) as material, and the thickness of inner insulating layer is 0.20-0.35mm.
The design feature of the utility model environment-friendly high fire-retardant power cable is also:
Described external insulation layer is not less than the irradiation crosslinking halogen-free low-smoke flame-proof polyolefin of 30 for material with oxygen index.
Described external sheath layer be with oxygen index be not less than 34 low-smoke halogen-free polyolefin or irradiated crosslinking low-smoke and halogen-free polyolefin for material.
Compared with the prior art, the utility model beneficial effect is embodied in:
1, the utility model inner insulating layer take high density polyethylene (HDPE) as material, improves the electrical insulation properties of cable, because this layer is thinner, little to the anti-flammability Index Influence of whole cable;
2, the utility model external insulation layer adopts irradiation cross-linking flame-retardant material, improves the flame retardant rating of cable, also improves the ampacity of cable simultaneously;
3, vertical alclad belt is set in the utility model, not only plays the shield effectiveness to cable, and the fire resistance of cable is also improved greatly;
4, the utility model have employed high flame retardant low-smoke halogen-free polyolefin or irradiated crosslinking low-smoke and halogen-free polyolefin jacket material at external sheath layer, and make the fire resistance of cable more superior, global design is scientific and reasonable, convenient processing and manufacture;
5, in the utility model, inner insulating layer and external insulation layer and external sheath layer are all adopt environment-friendly type high polymer, ensure that the environmental protection characteristic of cable.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Fig. 2 is another execution mode structural representation of the utility model;
Number in the figure: 1 metallic conductor, 2 inner insulating layers, 3 external insulation layers, 4 packed layers, 5 cable cores, 6 wrapped glass belts, 7 vertical alclad belts, 8 external sheath layers.
Embodiment
See Fig. 1 and Fig. 2, in the present embodiment, the version of environment-friendly high fire-retardant power cable is:
Adopt single metallic conductor 1 as shown in Figure 1, or adopt as shown in Figure 2 by the many stranded metallic conductors 1 formed of electrician's wire, metallic conductor 1 forms insulated wire cores by extruding formation inner insulating layer 2 and external insulation layer 3 respectively, be with single insulated wire cores 3 for cable core shown in Fig. 1, be by many insulated wire cores 3 twisted synthesizing cable shown in Fig. 2 and fill flame resistant filler rope 4 and form cable core; At the skin of cable core 4, what set gradually from inside to outside is wrapped glass belt 6, vertical alclad belt 7, and extrudes environmental protection flame retardant plastic sheath layer 8.
Wherein, inner insulating layer 2 take high density polyethylene (HDPE) as material, and the thickness of inner insulating layer 2 is 0.20-0.35mm, solves the problem adopting high flame retardant insulating material resistance lower; External insulation layer 3 is not less than the irradiation crosslinking halogen-free low-smoke flame-proof polyolefin of 30 for material with oxygen index, under guaranteeing the prerequisite of insulating performance of cable, improves the fire-retardant index of cable; External sheath layer 8 be with oxygen index be not less than 34 low-smoke halogen-free polyolefin or irradiated crosslinking low-smoke and halogen-free polyolefin for material, be a kind of environment-friendly type high polymer, to ensure the environmental protection characteristic of cable.
The utility model environment-friendly high fire-retardant power cable has good electrical insulation properties and flame-retarding performance by rational vibrational power flow and Material selec-tion, improves quality and the safety in operation of high flame retardant class cable.Its single-core cable can be applied to interchange occasion, also can be applied to direct current occasion, expands the range of application of cable.
Claims (3)
1. an environment-friendly high fire-retardant power cable, it is characterized in that: adopt single piece of metal conductor, or by the many stranded metallic conductors formed of electrician's wire, described metallic conductor forms inner insulating layer (2) and external insulation layer (3) formation insulated wire cores respectively by extruding, with single insulated wire cores (3) for cable core, or filled flame resistant filler rope (4) formed cable core by many insulated wire cores (3) twisted synthesizing cable; At the skin of described cable core, what set gradually from inside to outside is wrapped glass belt (6), vertical alclad belt (7), and extrudes environmental protection flame retardant plastic sheath layer (8); Described inner insulating layer (2) take high density polyethylene (HDPE) as material, and the thickness of inner insulating layer (2) is 0.20-0.35mm.
2. environment-friendly high fire-retardant power cable according to claim 1, is characterized in that described external insulation layer (3) is not less than the irradiation crosslinking halogen-free low-smoke flame-proof polyolefin of 30 for material with oxygen index.
3. environment-friendly high fire-retardant power cable according to claim 1, it is characterized in that described external sheath layer (8) be with oxygen index be not less than 34 low-smoke halogen-free polyolefin or irradiated crosslinking low-smoke and halogen-free polyolefin for material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520794587.8U CN204966082U (en) | 2015-10-12 | 2015-10-12 | High fire -retardant power cable of environment -friendly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520794587.8U CN204966082U (en) | 2015-10-12 | 2015-10-12 | High fire -retardant power cable of environment -friendly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204966082U true CN204966082U (en) | 2016-01-13 |
Family
ID=55061131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520794587.8U Expired - Fee Related CN204966082U (en) | 2015-10-12 | 2015-10-12 | High fire -retardant power cable of environment -friendly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204966082U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107722401A (en) * | 2017-11-06 | 2018-02-23 | 江苏永鼎股份有限公司 | A kind of anti-unfirmly closing optical cable of protection against rodents |
-
2015
- 2015-10-12 CN CN201520794587.8U patent/CN204966082U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107722401A (en) * | 2017-11-06 | 2018-02-23 | 江苏永鼎股份有限公司 | A kind of anti-unfirmly closing optical cable of protection against rodents |
| CN107722401B (en) * | 2017-11-06 | 2019-11-15 | 江苏永鼎股份有限公司 | A kind of anti-unfirmly closing optical cable of protection against rodents |
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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 |
Granted publication date: 20160113 Termination date: 20211012 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |