CN210245132U - High-reliability composite anti-bending flexible fire-resistant cable - Google Patents
High-reliability composite anti-bending flexible fire-resistant cable Download PDFInfo
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- CN210245132U CN210245132U CN201921579148.XU CN201921579148U CN210245132U CN 210245132 U CN210245132 U CN 210245132U CN 201921579148 U CN201921579148 U CN 201921579148U CN 210245132 U CN210245132 U CN 210245132U
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Abstract
The utility model discloses a flexible fire-resistant stranding of compound anti inflection of high reliability, include from interior to outer conductor inner core, first flame retardant coating, second flame retardant coating, intensive coating, armor and the oversheath that sets gradually, the second flame retardant coating is the mica material layer, it is the ceramic material layer to strengthen the coating, just strengthen the coating extrusion molding in the second flame retardant coating outside, it breaks away from to strengthen coating restriction mica material layer fracture. Carry out multiple fire-resistant protection to the conductor inner core through first flame retardant coating and second flame retardant coating, use the ceramic layer in the mica layer outside, can effectual fixed mica tape layer, promote safety protection performance.
Description
Technical Field
The utility model belongs to electrical cable field in particular to flexible fire-resistant stranding of compound anti inflection of high reliability.
Background
Cables are closely related to daily production and life, large-scale venues, high-rise buildings, various production factories, residential areas and the like usually concentrate a large amount of cables to be intensively laid, and generally adopt an overhead or direct-buried mode for wiring. In a centralized area of life, for the sake of environmental beauty, an overhead line is usually invisible, and cables are basically wired in a direct-buried manner. Along with the continuous expansion of cities and the continuous construction of high-rise buildings, various cables are more and more. Most of the cables are concentrated in cable ditches or cable bridges and are densely distributed, and when a fire disaster occurs, the cables can mutually influence each other to further expand the fire. If a fire disaster happens in some large-scale activity venues, subways, shopping malls and other buildings, the fire-resistant cable for maintaining the functions of the life system is necessary because the personnel concentration spreads and the area is wider.
The fire-resistant cable is a special cable with more market demands in recent years, the mica tape is used as a fire-resistant layer to wrap a metal conductor in the fire-resistant cable in the market at present, but the bending capability of the mica tape is limited due to the fragility of the mica tape, and the mica can fall off after being bent for several times, so that the fire-resistant capability of the mica tape is lost.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the not enough of existence among the prior art, the utility model provides a flexible fire-resistant stranding of compound anti inflection of high reliability can effectually prevent that the mica layer fracture from breaking away from, promotes safety protection performance.
The technical scheme is as follows: in order to achieve the above purpose, the technical scheme of the utility model is as follows:
the utility model provides a flexible fire-resistant stranding of compound anti inflection of high reliability, includes conductor inner core, first flame retardant coating, second flame retardant coating, intensive coating, armor and the oversheath that sets gradually from inside to outside, the second flame retardant coating is the mica material layer, it is the pottery material layer to strengthen the coating, just strengthen the coating extrusion molding in the second flame retardant coating outside, it breaks away from to strengthen the coating restriction mica material layer fracture.
Further, the reinforced coating layer is made of ceramic polyolefin material.
Furthermore, the thickness of the reinforced coating layer ranges from 0.2 mm to 0.5 mm.
Further, the second fire-resistant layer is a mica tape, and the mica tape is lapped and wrapped on the outer side of the first fire-resistant layer.
Further, the second fireproof layer wraps 1-4 layers of mica tapes in a wrapping mode, and the thickness range of the mica tapes is 0.1-0.4 mm.
Further, the first fire-resistant layer is made of ceramic polyolefin materials extruded on the outer side of the conductor inner core.
Further, the thickness of the first refractory layer is 0.3-0.6 mm.
Furthermore, the armor layer is in a longitudinal wrapping and wrapping mode, and the armor layer is a threaded steel strip armor layer.
Further, the outer sheath is made of a low-smoke halogen-free flame-retardant material.
Furthermore, the conductor inner core comprises a plurality of wires which are mutually twisted.
Has the advantages that: the utility model discloses a first flame retardant coating and second flame retardant coating carry out multiple fire-resistant protection to the conductor inner core, and break away from through the fracture of reinforceing coating restriction mica layer material. Use the ceramic layer in the mica layer outside, be for fixed mica tape layer, because the mica tape layer is between ceramic layer and conductor inner core, even because the bending back and forth of cable leads to the mica tape broken, its broken department still can make it not take place the displacement through strengthening the coating, continues to maintain the form of this mica layer, when flame burning, should cracked mica tape department still can sinter into a whole, promotes safety protection performance.
Drawings
FIG. 1 is a cross-sectional view of the overall structure of the present invention;
fig. 2 is a three-dimensional sectional view of the overall structure of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in fig. 1 and 2, the high-reliability composite anti-bending flexible fire-resistant cable comprises a conductor inner core 1, a first fire-resistant layer 2, a second fire-resistant layer 3, a reinforced coating layer 4, an armor layer 5 and an outer sheath 6 which are sequentially arranged from inside to outside, wherein the conductor inner core 1 comprises a plurality of wires which are mutually twisted, tensile strength and bending strength of the conductor inner core 1 are increased, the second fire-resistant layer 3 is a mica material layer, the second fire-resistant layer 3 is a mica tape, and the mica tape is lapped and wrapped on the outer side of the first fire-resistant layer 2.
The first fire-resistant layer 2 is made of ceramic polyolefin materials extruded on the outer side of the conductor inner core 1 or silicon rubber and the like, and the thickness of the first fire-resistant layer 2 is 0.3-0.6 mm. In order to guarantee to cover the outside of conductor inner core 1 completely, have following effect through setting up first flame retardant coating 2 between mica layer and conductor inner core 1:
firstly, can reduce because the defect of conductor transposition through the cover of ceramic material to conductor inner core 1, because traditional cable does not have the ceramic layer but directly adopts mica layer parcel, lead to appearing more gap region between mica tape and the conductor inner core 1, the laminating nature is not strong.
Secondly, prevent that the mica layer from taking to cover the clearance too big in the in-process of lapping, and when catching fire, flame pierces through the department of taking of mica tape, directly burns conductor inner core 1.
Thirdly, because the ceramic material layer exists in the outer side of the conductor inner core 1, the reject property of the wrapping process can be greatly reduced.
Strengthen coating 4 and be the ceramic material layer, just strengthen coating 4 extrusion molding in the 3 outsides of second flame retardant coating, strengthen coating 4 and be ceramic polyolefin material, strengthen coating 4's thickness scope and be 0.2-0.5 mm. The reinforced coating layer 4 limits the cracking and the separation of the mica material layer. Use the ceramic layer in the mica layer outside, be for fixed mica tape layer, because the mica tape layer is between ceramic layer and conductor inner core 1, even because the bending back and forth of cable leads to the mica tape broken, its broken department still can make it not take place the displacement through strengthening coating 4, continues to maintain the form of this mica layer, when flame burning, should cracked mica tape department still can sinter into a whole, promotes holistic safety protection performance.
According to the requirement of the cable on fire resistance, the second fire-resistant layer 3 is wrapped with 1-4 mica tapes, and the thickness of the mica tapes ranges from 0.1 mm to 0.4 mm. To meet different fire-resistant requirements.
The armor layer 5 is in a longitudinal wrapping and wrapping mode, and the armor layer 5 is a threaded steel strip armor layer. The thread structure is adopted to provide certain bending capability. Screw thread metal armor, inseparable parcel is in the outside of flame retardant coating, even when the wire rod burning, runs into water or external shock, still can keep the flame retardant coating to be unlikely to broken separation, can effectually maintain the form of flame retardant coating. And the fire resistance of the cable can be further enhanced by the armor layer 5.
The outer sheath 6 is a low-smoke halogen-free flame retardant material, and the outer sheath 6 can prevent flame spread, reduce smoke and does not produce toxic gas. Meanwhile, the cable has certain safety protection and insulation protection.
The above description is only a preferred embodiment of the present invention, and it should be noted that: for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present invention.
Claims (10)
1. The utility model provides a flexible fire-resistant stranding of compound anti inflection of high reliability which characterized in that: including conductor inner core (1), first flame retardant coating (2), second flame retardant coating (3), intensive coating (4), armor (5) and oversheath (6) that set gradually from inside to outside, second flame retardant coating (3) are the mica material layer, it is the ceramic material layer to strengthen coating (4), just strengthen coating (4) extrusion molding in second flame retardant coating (3) outside, it breaks away from to strengthen coating (4) restriction mica material layer fracture.
2. A high reliability composite flex-resistant flexible fire-resistant cable according to claim 1, characterized in that: the reinforced coating layer (4) is made of ceramic polyolefin material.
3. A high reliability composite flex-resistant flexible fire-resistant cable according to claim 2, wherein: the thickness range of the reinforced coating layer (4) is 0.2-0.5 mm.
4. A high reliability composite flex-resistant flexible fire-resistant cable according to claim 1, characterized in that: the second fire-resistant layer (3) is a mica tape, and the mica tape is lapped and wrapped on the outer side of the first fire-resistant layer (2).
5. A high reliability composite bend resistant flexible fire resistant cabling according to claim 4, wherein: the second fireproof layer (3) is wrapped with 1-4 layers of mica tapes, and the thickness range of the mica tapes is 0.1-0.4 mm.
6. A high reliability composite flex-resistant flexible fire-resistant cable according to claim 1, characterized in that: the first fire-resistant layer (2) is made of ceramic polyolefin materials extruded on the outer side of the conductor inner core (1).
7. A high reliability composite flex-resistant flexible fire-resistant cable according to claim 1, characterized in that: the thickness of the first refractory layer (2) is 0.3-0.6 mm.
8. A high reliability composite flex-resistant flexible fire-resistant cable according to claim 1, characterized in that: the armor layer (5) is in a longitudinal wrapping and wrapping mode, and the armor layer (5) is a threaded steel strip armor layer.
9. A high reliability composite flex-resistant flexible fire-resistant cable according to claim 1, characterized in that: the outer sheath (6) is made of low-smoke halogen-free flame-retardant material.
10. A high reliability composite flex-resistant flexible fire-resistant cable according to claim 1, characterized in that: the conductor inner core (1) comprises a plurality of wires which are stranded with each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921579148.XU CN210245132U (en) | 2019-09-23 | 2019-09-23 | High-reliability composite anti-bending flexible fire-resistant cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921579148.XU CN210245132U (en) | 2019-09-23 | 2019-09-23 | High-reliability composite anti-bending flexible fire-resistant cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210245132U true CN210245132U (en) | 2020-04-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921579148.XU Active CN210245132U (en) | 2019-09-23 | 2019-09-23 | High-reliability composite anti-bending flexible fire-resistant cable |
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| Country | Link |
|---|---|
| CN (1) | CN210245132U (en) |
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2019
- 2019-09-23 CN CN201921579148.XU patent/CN210245132U/en active Active
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