CN202694909U - Compensating cable for intrinsic safety system - Google Patents
Compensating cable for intrinsic safety system Download PDFInfo
- Publication number
- CN202694909U CN202694909U CN 201220235551 CN201220235551U CN202694909U CN 202694909 U CN202694909 U CN 202694909U CN 201220235551 CN201220235551 CN 201220235551 CN 201220235551 U CN201220235551 U CN 201220235551U CN 202694909 U CN202694909 U CN 202694909U
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- Prior art keywords
- cable
- safety system
- intrinsic safety
- twisted pair
- shield
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Abstract
The utility model discloses a compensating cable for an intrinsic safety system. The compensating cable for the intrinsic safety system comprises twisted pair cable sets and an insulating layer. Twisted pair cables are coated with an inner wound belt layer and a part shielding layer in sequence, a plurality of twisted pair cables coated with the part shielding layer are twisted together to form a bundle, and after the plurality of twisted pair cables being a bundle, the part shielding layer is coated with an outer wound belt layer, a total shielding layer and a restrictive coating. The part shielding layer and the total shielding layer are woven by tinned copper wire. The compensation cable for the intrinsic safety system effectively solves the problems that explosive gases burst caused by the cable because of electric spark and heat effect and the electric capacity and distributed inductance of the cable.
Description
Technical field
The utility model relates to the compensating cable field, relates in particular to a kind of compensating cable for intrinsic safety system.
Background technology
In industrial processes, some environment can give out inflammable gas, steam or dust, and when it reaches finite concentration in air, running into burning things which may cause a fire disaster will set off an explosion.Along with the development of industrial production and science and technology, tighter to manufacturing technique requirent, require higher to automatic control system.Because the electrodynamic instrument demand is increasing, range of application is more and more wider, so in the safety anti-explosive in modern times, except the safety anti-explosive problem to field instrument itself has proposed the more requirement of Gao Gengyan, also require to have the safety anti-explosive performance by the system of field instrument and the electric circuit constitute thereof.Essential safe type refers to the electric equipment that normal operation or the spark that produces or thermal effect all can not be lighted explosive mixture under standard test conditions, essential safe type is called for short intrinsic safety type.
At present, in the many high temperature of industry places such as oil, chemical industry, smeltings, require supporting with it various products will to adapt with the environment for use temperature the like this long-term safety stable operation of guarantee equipment.The employed common compensating cable in these high-temperature fields can not satisfy the requirement of environment for use.
The utility model content
The utility model provides for a kind of compensating cable for intrinsic safety system, has solved cable because electric spark and thermal effect cause the problem of explosion hazard gases blast and cable selfcapacity and distributed inductance.
Scheme of the present utility model is as follows: a kind of compensating cable for intrinsic safety system, comprise pair twist group, insulating barrier, described twisted pair wire externally is enclosed with respectively interior belting layer, sub-shield successively, a plurality of twisted pair wires after the parcel sub-shield are to mutual stranded bunchy, sub-shield is enclosed with outer belting layer, total screen, restrictive coating outward successively behind the bunchy, and described sub-shield, total screen adopt the tinned copper wire braiding.
Described insulating barrier adopts the fluoroplastics material.
Described restrictive coating adopts low-smoke halide-free fireproof composite polyolefine material.
The beneficial effects of the utility model: the utility model compact conformation, cable have sub-shield and total screen, and the tinned copper wire braiding is adopted in shielding, and count reaches more than 90%, can effectively prevent external interference.Simultaneously, it is insulation that insulating barrier adopts the material crosslinked polyethylene, helps to reduce mutual capacitance, improves insulation resistance, improves voltage-resistent characteristic, also has simultaneously good fire resistance; Halogen gas, gas pH value of water solution and the conductivity of overflowing during the cable material burning are low, have the low-corrosiveness energy; Generate smog during cable fire few.Cable has low electric capacity and low inductance, cable itself with electric charge to lack, be difficult for to produce electric spark; Also has the anti-explosion safety performance.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further.
A kind of compensating cable for intrinsic safety system, comprise that twisted pair wire is to 1, insulating barrier 2, twisted pair wire is twisted together by two alloy conductors 31 and consists of, the alloy conductor 3 outer insulating barriers 2 that are enclosed with respectively, twisted pair wire is enclosed with respectively interior belting layer 4 successively outside 1, sub-shield 5, a plurality of twisted pair wires after the parcel sub-shield 5 are to mutual stranded bunchy, be enclosed with successively outer belting layer 6 behind the bunchy outside the sub-shield 5, total screen 7, restrictive coating 8, sub-shield 5, total screen 7 adopts the tinned copper wire braiding, insulating barrier 2 adopts the fluoroplastics material, and restrictive coating 8 adopts low-smoke halide-free fireproof composite polyolefine material.
Described insulating barrier 2 adopts the fluoroplastics material; Described restrictive coating 8 adopts low-smoke halide-free fireproof composite polyolefine material.
Although above embodiment of the present utility model has been given to describe in detail and explanation; but what should indicate is; we can carry out various equivalences to above-mentioned execution mode according to conception of the present utility model and change and modification; when its function that produces does not exceed spiritual that specification and accompanying drawing contain yet, all should be within protection range of the present utility model.
Claims (3)
1. compensating cable for intrinsic safety system, comprise pair twist group, insulating barrier, it is characterized in that: twisted pair wire consists of being twisted together by two alloy conductors, alloy conductor is enclosed with respectively insulating barrier outward, twisted pair wire externally is enclosed with respectively interior belting layer, sub-shield successively, a plurality of twisted pair wires after the parcel sub-shield are to mutual stranded bunchy, sub-shield is enclosed with outer belting layer, total screen, restrictive coating outward successively behind the bunchy, and described sub-shield, total screen adopt the tinned copper wire braiding.
2. a kind of compensating cable for intrinsic safety system according to claim 1 is characterized in that: described insulating barrier employing fluoroplastics material.
3. a kind of compensating cable for intrinsic safety system according to claim 1 is characterized in that: described restrictive coating employing low-smoke halide-free fireproof composite polyolefine material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220235551 CN202694909U (en) | 2012-05-24 | 2012-05-24 | Compensating cable for intrinsic safety system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220235551 CN202694909U (en) | 2012-05-24 | 2012-05-24 | Compensating cable for intrinsic safety system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202694909U true CN202694909U (en) | 2013-01-23 |
Family
ID=47550491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220235551 Expired - Fee Related CN202694909U (en) | 2012-05-24 | 2012-05-24 | Compensating cable for intrinsic safety system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202694909U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103871608A (en) * | 2014-03-04 | 2014-06-18 | 安徽复兴电缆集团有限公司 | Marine compound cable |
| CN103871584A (en) * | 2014-02-24 | 2014-06-18 | 安徽华海特种电缆集团有限公司 | Low-smoke halogen-free K3-grade compensation cable for 1E type nuclear power station |
-
2012
- 2012-05-24 CN CN 201220235551 patent/CN202694909U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103871584A (en) * | 2014-02-24 | 2014-06-18 | 安徽华海特种电缆集团有限公司 | Low-smoke halogen-free K3-grade compensation cable for 1E type nuclear power station |
| CN103871584B (en) * | 2014-02-24 | 2016-04-27 | 安徽华海特种电缆集团有限公司 | A kind of low smoke and zero halogen 1E type used in nuclear power station K3 level compensating cable |
| CN103871608A (en) * | 2014-03-04 | 2014-06-18 | 安徽复兴电缆集团有限公司 | Marine compound cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130123 Termination date: 20130524 |