CN201820500U - Halogen-free low-smoke flame-retardant instrument cable for intrinsic safety - Google Patents
Halogen-free low-smoke flame-retardant instrument cable for intrinsic safety Download PDFInfo
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- CN201820500U CN201820500U CN201020549225XU CN201020549225U CN201820500U CN 201820500 U CN201820500 U CN 201820500U CN 201020549225X U CN201020549225X U CN 201020549225XU CN 201020549225 U CN201020549225 U CN 201020549225U CN 201820500 U CN201820500 U CN 201820500U
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- halogen
- smoke flame
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- free low
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Abstract
The utility model discloses a halogen-free low-smoke flame-retardant instrument cable for intrinsic safety, which comprises a plurality of conductors. A halogen-free low-smoke flame-retardant polyolefin irradiation insulating layer is extruded outside each conductor, the conductors with the insulating layers form a wire core set by means of pair twisting, an aluminum-plastic composite band shielding layer is lapped outside the wire core set, a plurality of wire core sets with shielding layers are stranded into a cable core, and a lapped cabling belting, a lapped aluminum-plastic composite band main shielding layer and an extruded outer sheath are sequentially arranged outside the cable core. The halogen-free low-smoke flame-retardant instrument cable is used as a signal cable for low-capacitance low-inductance distributed instruments, is excellent in shielding performance and interference resistance, and accordingly has higher anti-explosion safety performance than a common differential scanning calorimetry (DSC) cable and a computer control cable.
Description
Technical field:
The utility model relates to a kind of LSOH anti-flaming intrinsic safety instrument cable.
Background technology:
Quickening along with modern society's economic construction, LSOH anti-flaming class environment-friendly cable is applied in important department and public places such as subway, skyscraper, cinema, power plant, nuclear power station widely, and along with the proposition of European Union environmental protection instruction, now increasing unit and individual are also more and more higher to environmental requirement.Particularly in many public places, after breaking out of fire, regular meeting influences people's escape because of some halogens or dense smoke.Particularly chemical industry, the great serious accident in colliery occur repeatedly in recent years, so intrinsic safety more and more is subject to people's attention with the quality of instrument cable.Present employed instrument cable in order to reach fire-retardant purpose, uses halogen elements such as chloride, bromine more, and its amount of being fuming is very big, can constitute serious harm to personnel, equipment.
Summary of the invention:
For overcoming the defective of prior art, the purpose of this utility model is to provide a kind of LSOH anti-flaming intrinsic safety instrument cable, can effectively improve above defective.Simultaneously, the environmental pollution that production Halogen element material causes is also very big, and the popularization of this low smoke, zero halogen type cable can reduce or cancel the production of Halogen material, promotes environmental protection.
The utility model technical solution problem adopts following technical scheme:
A kind of LSOH anti-flaming intrinsic safety instrument cable, comprise conductor, described conductor is extruded with halogen-free and low-smoke flame-retardant polyolefin irradiation insulating barrier outward, many conductors with insulating barrier are to being twisted into the core group, the outer wrapped aluminium-plastic tape screen of core group, many core groups with screen are twisted into cable core, wrapped successively stranding band, the total screen of wrapped aluminium-plastic tape and extrude oversheath outside cable core.
Compared with the prior art, the beneficial effects of the utility model are embodied in:
1, by novel LSOH anti-flaming intrinsic safety being used structure, material and the technologic design of instrument cable, every performance of cable all meets design requirement and instructions for use.
2, the technical performance index of the invention:
2.1 conductor resistance meets the regulation of GB/T3956 in the time of 20 ℃, conductor adopts multiply soft copper conductor;
2.2 this cable cover(ing) oxygen index (LOI) can reach 38;
2.3 the amount of being fuming during cable fire, promptly not have flame be 132 to smoke density; It is 65 that flame is arranged.
2.4 the content of hydrogen halide is 0 during cable fire, the pH value is 5.3.
2.5 screen and total screen adopt aluminium-plastic tape, wherein shield rejection coefficient and are no more than 0.01; Stranding is filled and is adopted the low-smoke non-halogen flame-retardant inserts.
2.6 conductivity (μ s/mm) is 1.1.
3, because of this cable can satisfy the requirement of LSOH anti-flaming intrinsic safety with instrument cable, and structure is soft, and the amount of being fuming is low during burning, does not produce halogen acid gas, and has fire resistance, and environmental protection is had important impetus.
Description of drawings:
Fig. 1 is a structural representation of the present utility model.
Number in the figure: 1 conductor, 2 insulating barriers, 3 screens, 4 belting layers, 5 total screens, 6 oversheaths.
Below pass through embodiment, and the utility model is described in further detail in conjunction with the accompanying drawings.
Embodiment:
Embodiment: in conjunction with Fig. 1, the LSOH anti-flaming intrinsic safety instrument cable of present embodiment, conductor 1 adopts many copper conductor lay configuration, conductor 1 outer extruded insulation layer 2, insulating barrier 2 adopts the insulation of halogen-free and low-smoke flame-retardant polyolefin irradiation, and insulating barrier closely is extruded on the conductor 1.Many conductors with insulating barrier are to being twisted into the core group, and the core group is wrapped aluminium-plastic tape screen 3 outward, and many core groups with screen are twisted into cable core, and wrapped stranding belting layer 4, total screen 5 extrude oversheath 6 outside cable core.Screen 3 and total screen 5 adopt the aluminium-plastic tape shielding to add drainage thread.
Claims (1)
1. LSOH anti-flaming intrinsic safety instrument cable, it is characterized in that comprising conductor (1), described conductor is extruded with halogen-free and low-smoke flame-retardant polyolefin irradiation insulating barrier (2) outward, many conductors with insulating barrier are to being twisted into the core group, the outer wrapped aluminium-plastic tape screen (3) of core group, many core groups with screen are twisted into cable core, wrapped successively stranding belting layer (4), the total screen of wrapped aluminium-plastic tape (5) and extrude oversheath (6) outside cable core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020549225XU CN201820500U (en) | 2010-09-26 | 2010-09-26 | Halogen-free low-smoke flame-retardant instrument cable for intrinsic safety |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020549225XU CN201820500U (en) | 2010-09-26 | 2010-09-26 | Halogen-free low-smoke flame-retardant instrument cable for intrinsic safety |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201820500U true CN201820500U (en) | 2011-05-04 |
Family
ID=43918447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020549225XU Expired - Fee Related CN201820500U (en) | 2010-09-26 | 2010-09-26 | Halogen-free low-smoke flame-retardant instrument cable for intrinsic safety |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201820500U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104867582A (en) * | 2014-02-20 | 2015-08-26 | 安徽华电线缆集团有限公司 | Low-smoke halogen-free flame-retardant fireproof electronic computer cable |
-
2010
- 2010-09-26 CN CN201020549225XU patent/CN201820500U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104867582A (en) * | 2014-02-20 | 2015-08-26 | 安徽华电线缆集团有限公司 | Low-smoke halogen-free flame-retardant fireproof electronic computer 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 |
Granted publication date: 20110504 Termination date: 20150926 |
|
| EXPY | Termination of patent right or utility model |