CN217955462U - Breakdown-proof flexible fireproof cable - Google Patents
Breakdown-proof flexible fireproof cable Download PDFInfo
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- CN217955462U CN217955462U CN202221873389.7U CN202221873389U CN217955462U CN 217955462 U CN217955462 U CN 217955462U CN 202221873389 U CN202221873389 U CN 202221873389U CN 217955462 U CN217955462 U CN 217955462U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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Abstract
A breakdown-resistant flexible fireproof cable comprises a plurality of wire cores, wherein an inner protection layer is arranged on the outer side of each wire core, a flame-retardant filling layer is filled outside the inner protection layer, and an outer protection layer is arranged on the outer side of the flame-retardant filling layer; the inner protection layer comprises a first ceramic silicon rubber tape, a first mica tape, a second mica tape and a second ceramic silicon rubber tape which are sequentially wrapped on the wire core from inside to outside. The utility model provides a breakdown-proof flexible fireproof cable, which adopts two layers of ceramic silicon rubber tapes to wrap two layers of mica tapes, thereby enhancing the insulating property and effectively preventing the mica tapes from being affected with damp under the wrapping of the ceramic silicon rubber tapes; because the cost of the ceramic silicon rubber belt is several times of that of the mica belt, the insulation can be ensured, the breakdown is prevented, and the economical efficiency can be ensured by adopting the structure. Then, after the cable is heated, the mica tape becomes powder, and the ceramic silicon rubber tape can cover the mica tape so that the mica tape does not fall off from the surface of the conductor of the wire core.
Description
Technical Field
The utility model relates to a fireproof cable technical field, especially a flexible fireproof cable of preventing breakdown.
Background
The outer part of a core conductor of the flexible fireproof cable is usually wrapped with 4 layers of mica tapes to form an insulating layer; however, in a high humidity or humid environment, the mica tape is prone to absorb water and damp, the resistivity is reduced, the insulating property is poor, and under high voltage, the mica tape is electrified, so that the wire core conductor is prone to short circuit with other metal protective layers (such as a copper-braid sheath) on the outer side, and breakdown is caused. And the mica tape can be rapidly changed into powder and fall off after being burnt by fire, and the mica tape also has no insulating effect.
Disclosure of Invention
The utility model aims to solve the technical problem that a flexible fireproof cable of breakdown prevention is provided, mica can be prevented to be punctured around the covering.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: a breakdown-resistant flexible fireproof cable comprises a plurality of wire cores, wherein an inner protection layer is arranged on the outer side of each wire core, a flame-retardant filling layer is filled outside the inner protection layer, and an outer protection layer is arranged on the outer side of the flame-retardant filling layer; the inner protection layer comprises a first ceramic silicon rubber belt, a first mica belt, a second mica belt and a second ceramic silicon rubber belt which are sequentially wrapped on the wire core from inside to outside.
Preferably, the outer side of the second ceramic silicone rubber belt is extruded with a silane cross-linked insulating layer.
Preferably, the outer sheath comprises a ceramic polyolefin layer and an outer sheath in sequence from inside to outside.
Preferably, the flame-retardant filling layer is made of fire clay or fire-proof cotton.
The utility model provides a breakdown-proof flexible fireproof cable, which adopts two layers of ceramic silicon rubber tapes to wrap two layers of mica tapes, thereby enhancing the insulating property and effectively preventing the mica tapes from being affected with damp under the wrapping of the ceramic silicon rubber tapes; because the cost of the ceramic silicon rubber belt is several times of that of the mica belt, the insulation can be ensured, the breakdown is prevented, and the economical efficiency can be ensured by adopting the structure. Then, after the cable is heated, the mica tape becomes powder, and the ceramic silicon rubber tape can cover the mica tape so that the mica tape does not fall off from the surface of the conductor of the wire core. In addition, the metal tube is not extruded on the outer side, so that the breakdown probability is reduced.
Drawings
The invention will be further explained with reference to the following figures and examples:
fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural diagram of the inner protective layer of the present invention.
Detailed Description
As shown in fig. 1-2, a breakdown-resistant flexible fireproof cable comprises a plurality of conductive wire cores 1, an inner protective layer is arranged outside the conductive wire cores 1, a flame-retardant filling layer 2 is filled outside the inner protective layer, and an outer protective layer is arranged outside the flame-retardant filling layer 2; the inner protection layer comprises a first ceramic silicon rubber belt 3, a first mica belt 4, a second mica belt 5 and a second ceramic silicon rubber belt 6 which are sequentially wrapped on the wire core 1 from inside to outside. The ceramic silicone rubber tape improves the insulating property, plays a role in resisting moisture for the mica tape, has higher high temperature resistance, can bear the high temperature of 1000 ℃ without dripping, and can wrap the mica tape which is heated and pulverized so as not to fall.
Preferably, the outer side of the second silicon ceramic rubber belt 6 is extruded with a silane cross-linked insulating layer 7. The silane crosslinked insulating layer 7 is made of silane crosslinked polyethylene, so that the chemical resistance and the insulating property are high, and the insulating effect of the inner protection layer is further improved.
Preferably, the outer sheath comprises a ceramic polyolefin layer 8 and an outer sheath 9 in sequence from inside to outside. The ceramic polyolefin can generate hard ceramic-shaped hard shells under the conditions of flame burning or high temperature, the hard shells do not melt or drip, can resist water spraying and mechanical vibration, and has good heat insulation and fire insulation effects.
Preferably, the flame-retardant filling layer 2 is fire clay or fireproof cotton.
The utility model discloses compromise economic nature and insulating, humidity resistance, can effectively prevent that the short circuit that takes place after the cable wets from puncturing.
The above-mentioned embodiments are merely preferred embodiments of the present invention, and should not be considered as limitations of the present invention, and the protection scope of the present invention should be defined by the technical solutions described in the claims, and includes equivalent alternatives of technical features in the technical solutions described in the claims. Namely, equivalent alterations and modifications within the scope of the invention are also within the scope of the invention.
Claims (4)
1. A breakdown-resistant flexible fireproof cable comprises a plurality of wire cores (1), wherein an inner protection layer is arranged on the outer side of each wire core (1), a flame-retardant filling layer (2) is filled outside the inner protection layer, and an outer protection layer is arranged on the outer side of the flame-retardant filling layer (2); the method is characterized in that: the inner protection layer comprises a first ceramic silicone rubber tape (3), a first mica tape (4), a second mica tape (5) and a second ceramic silicone rubber tape (6) which are sequentially wrapped on the wire core (1) from inside to outside.
2. The breakdown-resistant flexible fireproof cable of claim 1, wherein: and a silane cross-linked insulating layer (7) is extruded and coated on the outer side of the second ceramic silicon rubber belt (6).
3. A flexible fire-protected cable against fire-penetration according to claim 1 or 2, wherein: the outer protective layer sequentially comprises a ceramic polyolefin layer (8) and an outer protective layer (9) from inside to outside.
4. The breakdown-resistant flexible fireproof cable of claim 1, wherein: the flame-retardant filling layer (2) is made of fire clay or fire-proof cotton.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221873389.7U CN217955462U (en) | 2022-07-20 | 2022-07-20 | Breakdown-proof flexible fireproof cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221873389.7U CN217955462U (en) | 2022-07-20 | 2022-07-20 | Breakdown-proof flexible fireproof cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217955462U true CN217955462U (en) | 2022-12-02 |
Family
ID=84222290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221873389.7U Active CN217955462U (en) | 2022-07-20 | 2022-07-20 | Breakdown-proof flexible fireproof cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217955462U (en) |
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2022
- 2022-07-20 CN CN202221873389.7U patent/CN217955462U/en active Active
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