CN201975148U - Three-core low-voltage electric power fire-resistant cable - Google Patents
Three-core low-voltage electric power fire-resistant cable Download PDFInfo
- Publication number
- CN201975148U CN201975148U CN2011200964333U CN201120096433U CN201975148U CN 201975148 U CN201975148 U CN 201975148U CN 2011200964333 U CN2011200964333 U CN 2011200964333U CN 201120096433 U CN201120096433 U CN 201120096433U CN 201975148 U CN201975148 U CN 201975148U
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- fire
- conductor
- resistant
- cable
- core
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Abstract
The utility model relates to the field of electrical products, in particular to a cable, and provides a three-core low-voltage electric power fire-resistant cable. The three-core low-voltage electric power fire-resistant cable comprises a cable conductor, wherein, a conductor wire core and a conductor insulating layer coated outside the conductor wire core are arranged in the cable conductor; a fire-resistant protective layer made from a ceramic silicon rubber material is arranged outside the conductor insulating layer; and flame-retardant fillers are arranged between a fire-resistant belting layer and the fire-resistant protective layer. The three-core low-voltage electric power fire-resistant cable utilizes the fire-resistant protective layer to effectively protect the internal structure of the cable from mechanical changes and electrical performance changes; and the flame-retardant low-smoke halogen-free fillers are arranged between the fire-resistant belting layer and the fire-resistant protective layer, so that the fire-resistant effect and the high temperature barrier effect of the three-core low-voltage electric power fire-resistant cable are remarkably reflected.
Description
Technical field
The utility model relates to the electric product field, is specifically related to a kind of cable.
Background technology
Now all can lay different cables, to satisfy the needs of communication, energising etc. in many occasions.Yet when fire occurs, fire will prolong combustion along the cable place and spread to other places.Add up according to fire department, in the Urban Fires, wherein more than 2/3 since electrical equipment fault or cable traffic overload cause that cable fire spreads and cause, in many fire in the past, what cause personal life danger and " secondary harm " often mainly is acid gas and the toxic gas that discharges behind the cable fire simultaneously.The fireproofing of cable technology more and more causes people's attention, and becomes an important development direction of line cable industry.
Traditional fire-resisting cable is mounted in the copper pipe, fills high temperature resistant solid material between copper pipe and the cable, needs solid material pad device, vertical bag equipment and welding equipment etc. in production and manufacture process.The material and facility cost of investment is very high, thereby it is many that manufacturing cost has been increased.In addition because high temperature resistant protective sleeve is the copper pipe structure, filling be solid material, so Cable Bending Radius is seldom, bring many inconvenience of installing to the user.
The utility model content
The purpose of this utility model is, a kind of three core low-voltage power fire-resisting cables are provided, and solves above technical problem.
The technical problem that the utility model solved can realize by the following technical solutions:
Three core low-voltage power fire-resisting cables; comprise a cable conductor; be provided with conductor thread core in the described cable conductor, be coated on the outer insulating layer of conductor of described conductor thread core; it is characterized in that; described insulating layer of conductor is provided with one deck refractory protection outward, the refractory protection that described refractory protection adopts the potteryization silastic material to make.
It has possessed the fundamental characteristics of silicon rubber good springiness to the refractory protection that the potteryization silastic material is made at normal temperatures; have nontoxic, tasteless, high-low temperature resistant, anti-ozone aging, weather-proof aging, excellent electric insulation performance; also possessed common high temperature silicon rubber good processing properties, to about 200 degree above freezing, can keep the flexible cable state at 40 degrees below zero.Attack at flame; temperature reaches 300 degree when above; can be converted to rigid sponge ceramic body by original soft condition; the inner hole that produces of refractory protection after the hardening; help insulation; the sponge ceramic body has fire-resistant significantly and intercepts action of high temperature like this, thereby effectively protects the internal structure of cable that machinery variation and electrical property variation do not take place.
Described cable conductor outermost layer is provided with a restrictive coating, and described refractory protection is arranged in the described restrictive coating, and described restrictive coating adopts the PE restrictive coating of PE material.Refractory protection of the present utility model is arranged in the restrictive coating; in use restrictive coating can well protect refractory protection to avoid the damage of external environment condition; when the flame combustion restrictive coating, owing under the effect of refractory protection, can well protect the conductor inside core.
Be provided with the fire-resistant belting layer of one deck between described refractory protection and the described restrictive coating, described fire-resistant belting layer adopts the wrapped fire-resistant belting layer that forms of mylar band.Polyester film is to be raw material with the PETG, adopts extrusion molding to make sheet, again the thin-film material of making through biaxial tension.Its mechanical performance is good, rigidity, hardness and toughness height, and endurable thorn, rub resistance, high temperature resistant and low temperature, chemical proofing, oil resistance, air-tightness are good, can guarantee further that inside of the present utility model does not take place that machinery changes and the electrical property variation.
Be provided with fire-retardant filler between described fire-resistant belting layer and the described refractory protection.Described fire-retardant filler is the flame-retardant low-smoke halogen-free filler, can realize fire-retardant purpose, and is therefore harmless to people's health because the flame-retardant low-smoke halogen-free filler is not halogen-containing, toxigenicity not, and does not contain heavy metal, environmental protection.
The insulating layer of conductor that described insulating layer of conductor adopts fluoroplastics to make.That fluoroplastics have is high temperature resistant, do not prolong characteristics such as combustion.The insulating layer of conductor that adopts fluoroplastics to make can effectively reduce cable and probabilities such as combustion occur prolonging when fire takes place.
Be provided with three described conductor thread cores in the described cable conductor, three described conductor thread cores are " product " font and are arranged in the described fire-resistant belting layer.
Beneficial effect: owing to adopted technique scheme; the utility model utilizes refractory protection effectively to protect the internal structure of cable that the machinery variation does not take place and electrical property changes; and the flame-retardant low-smoke halogen-free filler is set between fire-resistant belting layer and refractory protection, significantly embody fire-resistant and obstruct action of high temperature of the present utility model.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose with effect is easy to understand, below in conjunction with the further elaboration the utility model of concrete diagram.
With reference to Fig. 1; three core low-voltage power fire-resisting cables; comprise a cable conductor; be provided with conductor thread core 1 in the cable conductor, be coated on the insulating layer of conductor 2 outside the conductor thread core 1; the insulating layer of conductor 2 outer one deck refractory protections 3 that are provided with, the refractory protection that refractory protection 3 adopts the potteryization silastic material to make.It has possessed the fundamental characteristics of silicon rubber good springiness to the refractory protection 3 that the potteryization silastic material is made at normal temperatures; have nontoxic, tasteless, high-low temperature resistant, anti-ozone aging, weather-proof aging, excellent electric insulation performance; also possessed common high temperature silicon rubber good processing properties, to about 200 degree above freezing, can keep the flexible cable state at 40 degrees below zero.Attack at flame; temperature reaches 300 degree when above; can be converted to rigid sponge ceramic body by original soft condition; the refractory protection 3 inner holes that produce after the hardening; help insulation; the sponge ceramic body has fire-resistant significantly and intercepts action of high temperature like this, thereby effectively protects the internal structure of cable that machinery variation and electrical property variation do not take place.
The cable conductor outermost layer is provided with a restrictive coating 6, and refractory protection 3 is arranged in the restrictive coating 6, and restrictive coating 6 adopts the PE restrictive coating of PE material.Refractory protection 3 of the present utility model is arranged in the restrictive coating 6; in use restrictive coating 6 can well protect refractory protection 3 to avoid the damage of external environment condition; when flame combustion restrictive coating 6, owing under the effect of refractory protection 3, can well protect conductor inside core 1.Be provided with the fire-resistant belting layer 5 of one deck between refractory protection 3 and the restrictive coating 6, fire-resistant belting layer 5 adopts the wrapped fire-resistant belting layer that forms of mylar band.Polyester film is to be raw material with the PETG, adopts extrusion molding to make sheet, again the thin-film material of making through biaxial tension.Its mechanical performance is good, rigidity, hardness and toughness height, and endurable thorn, rub resistance, high temperature resistant and low temperature, chemical proofing, oil resistance, air-tightness are good, can guarantee further that inside of the present utility model does not take place that machinery changes and the electrical property variation.
Be provided with fire-retardant filler 4 between fire-resistant belting layer 5 and the refractory protection 3.Fire-retardant filler 4 is the flame-retardant low-smoke halogen-free filler, can realize fire-retardant purpose, and is therefore harmless to people's health because the flame-retardant low-smoke halogen-free filler is not halogen-containing, toxigenicity not, and does not contain heavy metal, environmental protection.The insulating layer of conductor that insulating layer of conductor 2 adopts fluoroplastics to make.That fluoroplastics have is high temperature resistant, do not prolong characteristics such as combustion.The insulating layer of conductor 2 that adopts fluoroplastics to make can effectively reduce cable and probabilities such as combustion occur prolonging when fire takes place.Being provided with 1, three conductor thread core 1 of three conductor thread cores in the cable conductor is " product " font and is arranged in the fire-resistant belting layer 5.
The utility model utilizes refractory protection 3 effectively to protect the internal structure of cable that the machinery variation does not take place and electrical property changes; and between fire-resistant belting layer 5 and refractory protection 3, the flame-retardant low-smoke halogen-free filler is set, significantly embody fire-resistant and obstruct action of high temperature of the present utility model.
More than show and described basic principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (10)
1. three core low-voltage power fire-resisting cables; comprise a cable conductor; be provided with conductor thread core in the described cable conductor, be coated on the outer insulating layer of conductor of described conductor thread core; it is characterized in that; described insulating layer of conductor is provided with one deck refractory protection outward, the refractory protection that described refractory protection adopts the potteryization silastic material to make.
2. three core low-voltage power fire-resisting cables according to claim 1, it is characterized in that: described cable conductor outermost layer is provided with a restrictive coating, and described refractory protection is arranged in the described restrictive coating.
3. three core low-voltage power fire-resisting cables according to claim 2 is characterized in that: described restrictive coating adopts the PE restrictive coating of PE material.
4. three core low-voltage power fire-resisting cables according to claim 2 is characterized in that: be provided with the fire-resistant belting layer of one deck between described refractory protection and the described restrictive coating.
5. three core low-voltage power fire-resisting cables according to claim 4 is characterized in that: described fire-resistant belting layer adopts the wrapped fire-resistant belting layer that forms of mylar band.
6. three core low-voltage power fire-resisting cables according to claim 5 is characterized in that: be provided with fire-retardant filler between described fire-resistant belting layer and the described refractory protection.
7. three core low-voltage power fire-resisting cables according to claim 6, it is characterized in that: described fire-retardant filler is the flame-retardant low-smoke halogen-free filler.
8. three core low-voltage power fire-resisting cables according to claim 1 is characterized in that: the insulating layer of conductor that described insulating layer of conductor adopts fluoroplastics to make.
9. three core low-voltage power fire-resisting cables according to claim 4 is characterized in that: be provided with three described conductor thread cores in the described cable conductor.
10. three core low-voltage power fire-resisting cables according to claim 9 is characterized in that: three described conductor thread cores are " product " font and are arranged in the described fire-resistant belting layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200964333U CN201975148U (en) | 2011-04-02 | 2011-04-02 | Three-core low-voltage electric power fire-resistant cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200964333U CN201975148U (en) | 2011-04-02 | 2011-04-02 | Three-core low-voltage electric power fire-resistant cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201975148U true CN201975148U (en) | 2011-09-14 |
Family
ID=44580246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200964333U Expired - Lifetime CN201975148U (en) | 2011-04-02 | 2011-04-02 | Three-core low-voltage electric power fire-resistant cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201975148U (en) |
-
2011
- 2011-04-02 CN CN2011200964333U patent/CN201975148U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110914 |
|
| CX01 | Expiry of patent term |