CN204651072U - Fireproof power cable - Google Patents
Fireproof power cable Download PDFInfo
- Publication number
- CN204651072U CN204651072U CN201520116915.9U CN201520116915U CN204651072U CN 204651072 U CN204651072 U CN 204651072U CN 201520116915 U CN201520116915 U CN 201520116915U CN 204651072 U CN204651072 U CN 204651072U
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- cable
- fire
- wire cores
- insulated wire
- conductor
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Abstract
The utility model discloses a kind of fireproof power cable, comprise cable core, outside cable core, be disposed with cooling inner covering, fire-resistant separation sleeve, metal armor layers and fire retardant polyolefin oversheath, cooling inner covering is the wrapped hermetically-sealed construction of inhibiting tape, and inhibiting tape is by being added with Al (OH)
3fire retardant and Mg (OH)
2the material of fire retardant is made, and fire-resistant separation sleeve is made up of ceramic organosilicon material; Cable core comprises insulated wire cores, and insulated wire cores comprises cable conductor, and cable conductor outside is disposed with conductor shield, crosslinked polyetylene insulated layer, insulation screen and metallic tape shield.This fireproof power cable adopts ceramic composite fire heat insulation structural, when there is flame combustion then along with temperature raises, rapidly by housing that Low fire ceramic shape is hard, complete, when outer flame high temperature reaches 950 ~ 1000 DEG C, primary insulation surface temperature is lower than 160 DEG C, and cable still can continue to keep safe operation to be no less than 90min.
Description
Technical field
The utility model relates to a kind of fireproof power cable.
Background technology
Fire-resisting cable refers to the cable that can keep certain hour safe operation under burning things which may cause a fire disaster combustion case, fire resistance test is divided into A, B two kinds of ranks by standard GB/T/T12666.6, A level burning things which may cause a fire disaster temperature 950 ~ 1000 DEG C, B level burning things which may cause a fire disaster temperature 750 ~ 800 DEG C, continue for fire time 90min, whole duration of test, sample should bear the load voltage value that product specifies, and keeps the unimpeded of circuit.
At present, what fire-resisting cable adopted both at home and abroad is magnesium oxide mineral insulation fire-resisting cable and Mica tape fire-resisting cable mostly.The structure of magnesium oxide mineral insulation fire-resisting cable is using electrician's red copper bar as conductor, using seamless copper pipe as sheath, fills inorganic mineral magnesia powder and make as insulation in sheath.Its advantage is the inorganic insulation structure that have employed magnesia powder, fire resistance and electrically, satisfactory mechanical property, serviceability temperature can reach 250 DEG C, but shortcoming be copper pipe once breakage, insulation property are anxious can decline rapidly; Secondly, manufacturing process limits the factory length of cable, causes joint many, and the water-proofing treatment of joint is also very difficult, and the Chang Yinwei joint moisture absorption insulation resistance that makes moist is defective; , involve great expense, laying installation difficulty is large again, can only be used for military and important establishing, be difficult to promote the use of.Mica tape fire-resisting cable is the structure combined with mica tape and plastic insulation, and its advantage is soft, is applicable to mobile occasion, and manufacture technics is convenient, and cost is lower.The producer manufacturing this cable is many, but this cable mica tape embrittlement after the burning of high temperature burning things which may cause a fire disaster, easily come off, cause fire-resistant weak effect, be difficult to ensure the safe and smooth of fire condition line.
Utility model content
For overcoming above-mentioned existing fireproof power cable Problems existing, the utility model proposes a kind of fireproof power cable, this fireproof power cable adopts ceramic composite fire heat insulation structural, it is flexibility fire resistive construction cable during normal use, when there is flame combustion then along with temperature raises, rapidly by housing that Low fire ceramic shape is hard, complete, when outer flame high temperature reaches 950 ~ 1000 DEG C, primary insulation surface temperature is lower than 160 DEG C, and cable still can continue to keep safe operation to be no less than 90min.
The technical solution of the utility model is achieved in that
A kind of fireproof power cable, comprise cable core, outside described cable core, be disposed with cooling inner covering, fire-resistant separation sleeve, metal armor layers and fire retardant polyolefin oversheath, described cooling inner covering is the wrapped hermetically-sealed construction of inhibiting tape, and described inhibiting tape is by being added with Al (OH)
3fire retardant and Mg (OH)
2the material of fire retardant is made, and described fire-resistant separation sleeve is made up of ceramic organosilicon material; Described cable core comprises insulated wire cores, and described insulated wire cores comprises cable conductor, and described cable conductor outside is disposed with conductor shield, crosslinked polyetylene insulated layer, insulation screen and metallic tape shield.
Further, described cable core also comprises flame retardant filler, described insulated wire cores quantity is 3, and 3 described insulated wire cores are mutually stranded, the gap of described flame retardant filler between described insulated wire cores and the gap between described insulated wire cores and described cooling inner covering.
Wherein, Al (OH) is added with
3fire retardant and Mg (OH)
2the name of the material of fire retardant is called low smoke halogen-free fire retardant polyolefin cable material.
The beneficial effects of the utility model:
Fireproof power cable cooling inner covering of the present utility model is the wrapped hermetically-sealed construction of high flame retardant band, with the addition of efficient flame-retarding agent Al (OH) in its material prescription
3, Mg (OH)
2, can the crystallization water be discharged when they are heated, absorb a large amount of heats, dehydration can produce a large amount of steam simultaneously, it can dilute high-temperature gas and reduce insulation and screen temperature, makes it lower than less than 160 DEG C, and cable insulation and shielding are not encroached on by high temperature to keep its electric property; Fire-resistant separation sleeve is ceramic complex mineral (i.e. ceramic organosilicon material) sheath, and the high temperature that it can effectively stop flame to produce is to the injury of insulation shield structure and conductor.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the utility model fireproof power cable.
Accompanying drawing indicates: 1, cable conductor, and 2, conductor shield, 3, crosslinked polyetylene insulated layer, 4, insulation screen, 5, metallic tape shield, 6, flame retardant filler, 7, cooling inner covering, 8, fire-resistant separation sleeve, 9, metal armor layers, 10, fire retardant polyolefin oversheath.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
With reference to Fig. 1, a kind of fireproof power cable, comprises cable core, and described cable core comprises flame retardant filler 6 and 3 mutual stranded insulated wire cores.Described insulated wire cores comprises cable conductor 1, and described cable conductor 1 outside is disposed with conductor shield 2, crosslinked polyetylene insulated layer 3, insulation screen 4 and metallic tape shield 5.Cooling inner covering 7, fire-resistant separation sleeve 8, metal armor layers 9 and fire retardant polyolefin oversheath 10 is disposed with outside described cable core.Described cooling inner covering 7 is the wrapped hermetically-sealed construction of inhibiting tape, and described inhibiting tape is by being added with Al (OH)
3fire retardant and Mg (OH)
2the material of fire retardant is made, and described fire-resistant separation sleeve 8 is made up of ceramic organosilicon material.
Fireproof power cable cooling inner covering 7 of the present utility model is the wrapped hermetically-sealed construction of high flame retardant band, with the addition of efficient flame-retarding agent Al (OH) in its material prescription
3, Mg (OH)
2, can the crystallization water be discharged when they are heated, absorb a large amount of heats, dehydration can produce a large amount of steam simultaneously, it can dilute high-temperature gas and reduce insulation and screen temperature, makes it lower than less than 160 DEG C, and cable insulation and shielding are not encroached on by high temperature to keep its electric property; Fire-resistant separation sleeve 8 is ceramic complex mineral (i.e. ceramic organosilicon material) sheath, and the high temperature that it can effectively stop flame to produce is to the injury of insulation shield structure and conductor.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection range of the present utility model.
Claims (2)
1. a fireproof power cable, it is characterized in that, comprise cable core, cooling inner covering, fire-resistant separation sleeve, metal armor layers and fire retardant polyolefin oversheath is disposed with outside described cable core, described cooling inner covering is the wrapped hermetically-sealed construction of inhibiting tape, described inhibiting tape is made up of low smoke halogen-free fire retardant polyolefin cable material, and described fire-resistant separation sleeve is made up of ceramic organosilicon material; Described cable core comprises insulated wire cores, and described insulated wire cores comprises cable conductor, and described cable conductor outside is disposed with conductor shield, crosslinked polyetylene insulated layer, insulation screen and metallic tape shield.
2. fireproof power cable according to claim 1, is characterized in that, described cable core also comprises flame retardant filler, and described insulated wire cores quantity is 3, and 3 described insulated wire cores are mutually stranded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520116915.9U CN204651072U (en) | 2015-02-26 | 2015-02-26 | Fireproof power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520116915.9U CN204651072U (en) | 2015-02-26 | 2015-02-26 | Fireproof power cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204651072U true CN204651072U (en) | 2015-09-16 |
Family
ID=54103791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520116915.9U Expired - Fee Related CN204651072U (en) | 2015-02-26 | 2015-02-26 | Fireproof power cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204651072U (en) |
-
2015
- 2015-02-26 CN CN201520116915.9U patent/CN204651072U/en not_active Expired - Fee Related
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150916 Termination date: 20190226 |