CN210984335U - Fire-resistant cable - Google Patents
Fire-resistant cable Download PDFInfo
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- CN210984335U CN210984335U CN201922315377.7U CN201922315377U CN210984335U CN 210984335 U CN210984335 U CN 210984335U CN 201922315377 U CN201922315377 U CN 201922315377U CN 210984335 U CN210984335 U CN 210984335U
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- shielding layer
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- resistant cable
- flame retardant
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Abstract
The utility model relates to a fire-resistant cable, which comprises a sheath layer, a shielding layer, a fire-proof layer and a conductive unit; the fireproof layer is coated outside the conductive unit, the shielding layer is coated outside the fireproof layer, the sheath layer is coated outside the shielding layer, the conductive unit comprises two conductive cores, a grounding core is further arranged between the shielding layer and the fireproof layer, the shielding layer is made of aluminum foil with the thickness of 0.55mm, and the fireproof layer is woven by 25 glass fiber yarns with the thickness of 0.3 mm; the utility model discloses a flame retardant coating adopts 25 0.3 mm's glass fiber silk to weave and forms, has both increased cable strength to possess good compliance, can be when the wiring as required at will crooked, very big making things convenient for pre-buried of circuit, enlarged application scope.
Description
Technical Field
The utility model relates to a fire resisting cable.
Background
The fire-resistant cable is a cable which keeps the integrity of a circuit at a certain flame temperature and not lower than a certain time, and is widely used for signal control systems of security engineering, subway and airport densely populated places; when accidents such as fire disasters occur, the fire-resistant cable can keep normal operation and communication work of equipment, so that the life and property safety of people is guaranteed; the existing fire-resistant cable is mostly provided with metal armoring in a sheath layer for increasing the strength, although the strength is greatly increased, the flexibility is poor, the cable cannot be bent during wiring, and the circuit is embedded in a buried manner, so that the application range is small and the cable is to be further improved.
SUMMERY OF THE UTILITY MODEL
To the current situation of above-mentioned prior art, the utility model aims to solve the technical problem that a fire resisting cable that has both increased cable strength to possess good compliance, thereby can be when the wiring crooked pre-buried with very big having made things convenient for the circuit as required at will, and then enlarged application scope is provided.
The utility model provides a technical scheme that above-mentioned technical problem adopted does: a fire-resistant cable comprises a sheath layer, a shielding layer, a fire-resistant layer and a conductive unit; the flame retardant coating cladding is in the outside of electrically conductive unit, and the shielding layer cladding is in the outside of flame retardant coating, and the restrictive coating cladding is in the outside of shielding layer, its characterized in that, the shielding layer adopts thickness to be 0.55 mm's aluminium foil, the flame retardant coating adopts 25 0.3 mm's glass fiber silk to weave and forms, electrically conductive unit includes two electrically conductive cores, electrically conductive core includes the conductor and the cladding insulating layer outside the conductor, still be equipped with the ground connection core between shielding layer and the flame retardant coating, the ground connection core is twisted together by 7 0.18 mm's wire and forms.
Preferably, the outer diameter of the sheath layer is 7.5mm, and the thickness is 0.8 mm.
Preferably, the outer diameter of the conductive core is 2.7 mm.
Preferably, the conductor is twisted from 30 wires of 0.24 mm.
Compared with the prior art, the utility model has the advantages of: the utility model discloses a flame retardant coating adopts 25 0.3 mm's glass fiber silk to weave and forms, has both increased cable strength to possess good compliance, can be when the wiring as required at will crooked, very big making things convenient for pre-buried of circuit, enlarged application scope.
Drawings
Fig. 1 is a sectional structure view of the present invention.
Detailed Description
As shown in fig. 1, a fire-resistant cable includes a sheath layer 1, a shielding layer 2, a fire-resistant layer 3 and a conductive unit; the fireproof layer 3 is coated outside the conductive unit, the shielding layer 2 is coated outside the fireproof layer 3, the sheath layer 1 is coated outside the shielding layer 2, the conductive unit comprises two conductive cores, a grounding core 6 is further arranged between the shielding layer 2 and the fireproof layer 3, the shielding layer 2 is made of aluminum foil with the thickness of 0.55mm, the fireproof layer 3 is woven by 25 glass fiber yarns with the thickness of 0.3mm, the outer diameter of the conductive core is 2.7mm, the conductive core comprises a conductor 4 and an insulating layer 5 coated outside the conductor 4, and the grounding core 6 is formed by twisting 7 metal wires with the thickness of 0.18 mm; the outer diameter of the sheath layer 1 is 7.5mm, and the thickness is 0.8 mm; the conductor 4 is formed by twisting 30 wires of 0.24 mm.
When in use: connect conductor 4 in two conductive cores respectively on the power positive and negative pole of equipment in order to play electrically conductive effect, connect ground connection core 6 on the ground connection end of equipment in order to play the ground connection effect, the glass fiber silk in flame retardant coating 3 has played thermal-insulated effect, and shielding layer 2 has played the signal shielding effect.
The fire-resistant cable is a cable which keeps the integrity of a circuit at a certain flame temperature and not lower than a certain time, and is widely used for signal control systems of security engineering, subway and airport densely populated places; when accidents such as fire disasters occur, the fire-resistant cable can keep normal operation and communication work of equipment, so that the life and property safety of people is guaranteed; in order to increase the strength of the existing fire-resistant cable, metal armoring is arranged in a sheath layer, so that the strength is greatly increased, but the existing fire-resistant cable is poor in softness and cannot be bent during wiring, so that the line is embedded inconveniently, and the application range is small; the utility model discloses a flame retardant coating 3 adopts 25 0.3 mm's glass fiber silk to weave and forms, has both increased cable strength to possess good compliance, can be crooked as required at will when the wiring, very big making things convenient for pre-buried of circuit, enlarged application scope.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that various changes in the embodiments and modifications thereof may be made, and equivalents may be substituted for elements thereof; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (4)
1. A fire-resistant cable comprises a sheath layer, a shielding layer, a fire-resistant layer and a conductive unit; the flame retardant coating cladding is in the outside of electrically conductive unit, and the shielding layer cladding is in the outside of flame retardant coating, and the restrictive coating cladding is in the outside of shielding layer, its characterized in that, the shielding layer adopts thickness to be 0.55 mm's aluminium foil, the flame retardant coating adopts 25 0.3 mm's glass fiber silk to weave and forms, electrically conductive unit includes two electrically conductive cores, electrically conductive core includes the conductor and the cladding insulating layer outside the conductor, still be equipped with the ground connection core between shielding layer and the flame retardant coating, the ground connection core is twisted together by 7 0.18 mm's wire and forms.
2. The fire resistant cable of claim 1 wherein said sheath layer has an outer diameter of 7.5mm and a thickness of 0.8 mm.
3. The fire resistant cable of claim 1 wherein said conductive core has an outer diameter of 2.7 mm.
4. A fire resistant cable according to claim 1, wherein said conductor is twisted from 30 0.24mm wires.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922315377.7U CN210984335U (en) | 2019-12-21 | 2019-12-21 | Fire-resistant cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922315377.7U CN210984335U (en) | 2019-12-21 | 2019-12-21 | Fire-resistant cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210984335U true CN210984335U (en) | 2020-07-10 |
Family
ID=71416038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922315377.7U Active CN210984335U (en) | 2019-12-21 | 2019-12-21 | Fire-resistant cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210984335U (en) |
-
2019
- 2019-12-21 CN CN201922315377.7U patent/CN210984335U/en active Active
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