CN204884687U - Fire prevention formula computer cable - Google Patents
Fire prevention formula computer cable Download PDFInfo
- Publication number
- CN204884687U CN204884687U CN201520622896.7U CN201520622896U CN204884687U CN 204884687 U CN204884687 U CN 204884687U CN 201520622896 U CN201520622896 U CN 201520622896U CN 204884687 U CN204884687 U CN 204884687U
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- CN
- China
- Prior art keywords
- cable
- carbon dioxide
- gas protection
- plastic film
- utility
- 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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- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
The utility model discloses a fire prevention formula computer cable, it includes a plurality of conductors (1), wraps up insulating layer (2) and iron shielded layer (3) outside the conductor, gas protection layer (4) have been laid in the axle center of cable, the gas protection in situ fills there is carbon dioxide gas (5), a plurality of through -holes have been seted up to the longitudinal section on gas protection layer, it has plastic film (6) to paste on the through -hole. The beneficial effects of the utility model are that other are in bond at gas protection in situ for the intraformational carbon dioxide of gas protection under the normality, and plastic film dissolves and releases carbon dioxide gas when the inside the local temperature of cable is too high, to cable inside carrying out the automatic fire extinguishing processing.
Description
Technical field
The utility model relates to cable, particularly relates to computer cable.
Background technology
Computer cable is applicable to rated voltage 500V and requires higher electronic computer and automation cable for connecting for anti-tampering property below.Cable earth wire core insulation adopts the K type category-B low density polyethylene (LDPE) with antioxygenic property.Poly insulation resistance is high, and proof voltage is good, and little and dielectric loss temperature and Frequency the impact of dielectric coefficient is also little, not only can meet the requirement of transmission performance, and can guarantee the useful life of cable.In order to reduce mutual crosstalk between loop and external disturbance, cable adopts shielding construction.The shielding requirements of cable adopts respectively according to different occasion: pair twist combines the method such as total shielding, the rear total shielding of pair twist combination shielding of shielding, pair twist composition cable.Shielding material has circular copper wire, copper strips, aluminium strip/plastics composite band three kinds.Shield to shielding to having good insulation property, if cable in use shield to shielding between appearance potential poor time, the transmission quality of signal can not be affected.Its technical parameter is as follows: when laying, ambient temperature is not less than: fixedly lay-40 DEG C, and on-fixed lays-15 DEG C; Minimum bending radius: 6 times of the outside diameter of cable should be not less than without armour, the cable of band armour should be not less than 12 times of the outside diameter of cable; 2500M Ω Km should be not less than with insulation resistance after direct current 500V voltage test constant charge 1min 20 DEG C time; Between the shielding of each pair twist and pair twist shielding and should not open circuit between always shielding; Should 50HZ be stood between the core of cable and core and between shielding, exchange 2000V voltage test 5min and do not puncture.Existing computer cable does not have fire prevention measure, once the insulating barrier of its inner conductor is damaged, is easy to temperature rising generation the moon and so even produces naked light, cause security incident when conductor current is transshipped.
Utility model content
The technical problems to be solved in the utility model be existing computer cable not for the remedial measure of interior fires hidden danger, when cable over-heat inside even spontaneous combustion time can not Timeliness coverage process, a kind of fire-proof type computer cable is provided for this reason.
The technical solution of the utility model is: fire-proof type computer cable; it comprises some conductors, be wrapped in insulating barrier outside conductor and metal screen layer; the axle center of described cable is laid with gas blanket; carbon dioxide is filled with in described gas blanket; the longitudinal section of described gas blanket offers some through holes, and described through hole is pasted with plastic film.
Foam cotton is filled with between insulating barrier and metal screen layer described in such scheme.
The beneficial effects of the utility model be carbon dioxide under normality in gas blanket other be bound in gas blanket, when the inner local temperature of cable is too high, plastic film dissolves and discharges carbon dioxide, carries out self-extinguishing process to cable inside.
Accompanying drawing explanation
Fig. 1 is the utility model schematic diagram;
In figure, 1, conductor, 2, insulating barrier, 3, metal screen layer, 4, gas blanket, 5, carbon dioxide, 6, plastic film, 7, foam is cotton.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further.
As shown in Figure 1; the utility model comprises some conductors 1, be wrapped in insulating barrier 2 outside conductor and metal screen layer 3; the axle center of described cable is laid with gas blanket 4; carbon dioxide 5 is filled with in described gas blanket; the longitudinal section of described gas blanket offers some through holes, described through hole is pasted with plastic film 6.
Particularly; its body of gas blanket can be the hollow circular cylinder of regular shape or the square of hollow or other possibility moulding in irregular shape that lay along cable axle center; its material can be rubber, plastic cement or other refractory material are made; normality lower through-hole is covered by plastic film and is not in communication with the outside; when cable internal temperature raises extremely; plastic film is thermo-labile to be dissolved; carbon dioxide in release gas blanket; eliminate burning things which may cause a fire disaster; by fire control in source; stop the generation of security incident, improve the security performance of cable.
In order to improve fire resistance rating further, foam cotton 7 can be filled with between insulating barrier and metal screen layer, stop fire spread.
Claims (2)
1. fire-proof type computer cable; it comprises some conductors (1), be wrapped in insulating barrier (2) outside conductor and metal screen layer (3); it is characterized in that the axle center of described cable is laid with gas blanket (4); carbon dioxide (5) is filled with in described gas blanket; the longitudinal section of described gas blanket offers some through holes, described through hole is pasted with plastic film (6).
2. fire-proof type computer cable as claimed in claim 1, is characterized in that being filled with foam cotton (7) between described insulating barrier and metal screen layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520622896.7U CN204884687U (en) | 2015-08-19 | 2015-08-19 | Fire prevention formula computer cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520622896.7U CN204884687U (en) | 2015-08-19 | 2015-08-19 | Fire prevention formula computer cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204884687U true CN204884687U (en) | 2015-12-16 |
Family
ID=54829038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520622896.7U Expired - Fee Related CN204884687U (en) | 2015-08-19 | 2015-08-19 | Fire prevention formula computer cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204884687U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111292887A (en) * | 2020-02-24 | 2020-06-16 | 广州启光智造技术服务股份有限公司 | Marine cable outsourcing composite shielding layer |
-
2015
- 2015-08-19 CN CN201520622896.7U patent/CN204884687U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111292887A (en) * | 2020-02-24 | 2020-06-16 | 广州启光智造技术服务股份有限公司 | Marine cable outsourcing composite shielding layer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 244000 Tongling suburb industrial park in Anhui Patentee after: Tongling special cable Co. Ltd. Address before: 244000 Tongling suburb industrial park in Anhui Patentee before: Tongling City Tongdu Special Cable Co.,Ltd. |
|
| 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: 20151216 Termination date: 20180819 |