CN210110402U - Double-layer insulation stranded fire-resistant long-life cable wire - Google Patents
Double-layer insulation stranded fire-resistant long-life cable wire Download PDFInfo
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- CN210110402U CN210110402U CN201921032852.3U CN201921032852U CN210110402U CN 210110402 U CN210110402 U CN 210110402U CN 201921032852 U CN201921032852 U CN 201921032852U CN 210110402 U CN210110402 U CN 210110402U
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Abstract
The utility model discloses a double-deck insulating transposition fire-resistant long-life cable electric wire, including the cable core and cladding in proper order at the outside first insulating layer of cable core, metallic shield layer and first outer jacket, it is provided with first flame retardant coating to fill between cable core and the first insulating layer; the cable core comprises a twisted inner cable core, a second insulating layer and a second outer protective layer which are sequentially coated outside the inner cable core, and a second fire-resistant layer is filled between the inner cable core and the second insulating layer; the outside on cable core is provided with a plurality of support ring along the axial interval, the fixed spacing ring that is provided with of cooperation support ring on the inner wall on first insulation layer, the support ring cooperation is supported in the spacing ring the utility model discloses a set up insulating layer and flame retardant coating in the cable, can the effectual fire resistance of improvement cable, cable core production skew makes the flame retardant coating lose effect and produce the danger of catching fire when the support ring between cable core and the sheath can prevent that the cable from crooked, improves the stability of cable fire resistance.
Description
Technical Field
The utility model relates to a cable wire technical field especially relates to double-deck insulating transposition fire-resistant long-life cable wire.
Background
The cable is a material used for electric power, communication and related transmission, along with the development of the society, the application range and occasions of the cable are more and more, a plurality of conductors are generally arranged in the existing cable, the conductors are not isolated, the problem that the fire disaster and the like are caused due to the fact that the temperature of the cable is too high when the cable is used is solved, the fire resistance of the cable is improved by filling powdery fire-resistant materials in the existing cable, but when the cable is bent, the cable core can deviate in the filling layer and is attached to the cable sheath, the fire-resistant filling layer is enabled to lose effect, and the high-temperature fire of the cable is easily caused.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to avoid prior art's weak point, provide the fire-resistant long-life cable wire of double-deck insulating transposition to effectively solve the weak point that exists among the prior art.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the double-layer insulation stranded fire-resistant long-life cable wire comprises a cable core, and a first insulation layer, a metal shielding layer and a first outer protection layer which are sequentially coated outside the cable core, wherein a first fire-resistant layer is filled between the cable core and the first insulation layer; the cable core comprises a twisted inner cable core, a second insulating layer and a second outer protective layer which are sequentially coated outside the inner cable core, and a second fire-resistant layer is filled between the inner cable core and the second insulating layer;
the cable comprises a cable core and is characterized in that a plurality of support rings are axially arranged outside the cable core at intervals, a limiting ring is fixedly arranged on the inner wall of the first insulating layer in a matched mode with the support rings, and the support rings are supported in the limiting ring in a matched mode.
Furthermore, a plurality of through holes are formed in the support ring along the circumferential direction.
Further, the inner cable core comprises a first conductor arranged in the center of the cable core and two second conductors twisted on the first conductor.
Further, the first insulating layer and the second insulating layer are made of polyvinyl chloride.
Further, the metal shielding layer is a protective net woven by galvanized copper wires.
Further, the first outer protective layer and the second outer protective layer are made of low-smoke halogen-free materials.
Further, the first conductor and the second conductor are made of brass.
Further, the first fire-resistant layer and the second fire-resistant layer are filled by mixing mica tapes and mica powder.
The above technical scheme of the utility model following beneficial effect has: the utility model discloses a set up insulating layer and flame retardant coating in the cable, can effectual improvement cable's fire-resistant property, cable core production skew makes the flame retardant coating lose effect and produce the danger of catching fire when the support ring between cable core and the sheath can prevent the cable bending, improves cable fire-resistant property's stability.
Drawings
Fig. 1 is a cross-sectional view of an embodiment of the present invention.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1, the double-layer insulation stranded fire-resistant long-life cable wire of the embodiment includes a cable core 1, and a first insulation layer 2, a metal shielding layer 3 and a first outer protection layer 4 which are sequentially coated outside the cable core 1, wherein a first fire-resistant layer 5 is filled between the cable core 1 and the first insulation layer 2; the cable core 1 comprises a twisted inner cable core 11, a second insulating layer 12 and a second outer protective layer 13 which are sequentially coated outside the inner cable core 11, and a second fire-resistant layer 14 is filled between the inner cable core 11 and the second insulating layer 12; the double-layer insulating layer and the double-layer fireproof layer are arranged in the cable, so that the fireproof property of the cable can be effectively improved;
a plurality of support rings 15 are axially arranged at intervals outside the cable core 1, a limit ring 21 is fixedly arranged on the inner wall of the first insulating layer 2 in a manner of being matched with the support rings 15, and the support rings 15 are matched and supported in the limit ring 21; the support ring 15 can support the cable sheath outside the cable core 1 when the cable is bent, so that the risk of fire caused by the fact that the cable core 1 deviates and is too close to the cable sheath is avoided, and the stability of the fire resistance of the cable is improved; the limiting ring 21 can limit the axial movement of the supporting ring 15, so that the axial relative movement of the cable core 1 and the cable sheath is avoided, and the integral flatness of the cable is improved;
preferably, the support ring 15 is provided with a plurality of through holes 15a along the circumferential direction, so that the filler in the first flame retardant coating 5 can be uniformly distributed when the cable is bent.
Preferably, the inner cable core 11 comprises a first conductor 111 arranged in the center of the cable core 1 and two second conductors 112 twisted on the first conductor 111.
Preferably, the first insulating layer 2 and the second insulating layer 12 are made of polyvinyl chloride.
Preferably, the metal shielding layer 3 is a protective net woven by galvanized copper wires, has good toughness, enables the cable to be easily bent, has longer service life, and can play a role in corrosion prevention after galvanization.
Preferably, the first outer protective layer 4 and the second outer protective layer 13 are made of low-smoke halogen-free materials, and have good flame retardant properties.
Preferably, the first conductor 111 and the second conductor 112 are made of brass, and have good electrical conductivity.
Preferably, the first flame retardant coating 5 and the second flame retardant coating 14 are filled by mixing mica tapes and mica powder, so that the toughness of the cable can be improved, the cable also has high flame resistance, insulation property, heat insulation property and the like, and the influence of the environmental temperature on the cable can be reduced.
The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
Claims (8)
1. Fire-resistant long-life cable wire of double-deck insulation transposition, its characterized in that: the cable comprises a cable core, and a first insulating layer, a metal shielding layer and a first outer protective layer which are sequentially coated outside the cable core, wherein a first fire-resistant layer is filled between the cable core and the first insulating layer; the cable core comprises a twisted inner cable core, a second insulating layer and a second outer protective layer which are sequentially coated outside the inner cable core, and a second fire-resistant layer is filled between the inner cable core and the second insulating layer;
the cable comprises a cable core and is characterized in that a plurality of support rings are axially arranged outside the cable core at intervals, a limiting ring is fixedly arranged on the inner wall of the first insulating layer in a matched mode with the support rings, and the support rings are supported in the limiting ring in a matched mode.
2. The double-layer insulated stranded fire-resistant long-life cable wire of claim 1, wherein: a plurality of through holes are formed in the support ring along the circumferential direction.
3. The double-layer insulated stranded fire-resistant long-life cable wire of claim 1, wherein: the inner cable core comprises a first conductor arranged in the center of the cable core and two second conductors twisted on the first conductor.
4. The double-layer insulated stranded fire-resistant long-life cable wire of claim 1, wherein: the first insulating layer and the second insulating layer are made of polyvinyl chloride materials.
5. The double-layer insulated stranded fire-resistant long-life cable wire of claim 1, wherein: the metal shielding layer is a protective net woven by galvanized copper wires.
6. The double-layer insulated stranded fire-resistant long-life cable wire of claim 1, wherein: the first outer protective layer and the second outer protective layer are made of low-smoke halogen-free materials.
7. The double layer insulation stranded fire resistant long life cable wire of claim 3, wherein: the first conductor and the second conductor are made of brass.
8. The double-layer insulated stranded fire-resistant long-life cable wire of claim 1, wherein: the first fire-resistant layer and the second fire-resistant layer are formed by mixing and filling mica tapes and mica powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921032852.3U CN210110402U (en) | 2019-07-04 | 2019-07-04 | Double-layer insulation stranded fire-resistant long-life cable wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921032852.3U CN210110402U (en) | 2019-07-04 | 2019-07-04 | Double-layer insulation stranded fire-resistant long-life cable wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210110402U true CN210110402U (en) | 2020-02-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921032852.3U Active CN210110402U (en) | 2019-07-04 | 2019-07-04 | Double-layer insulation stranded fire-resistant long-life cable wire |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113488252A (en) * | 2021-06-17 | 2021-10-08 | 安徽凌宇电缆科技有限公司 | Durable cable |
-
2019
- 2019-07-04 CN CN201921032852.3U patent/CN210110402U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113488252A (en) * | 2021-06-17 | 2021-10-08 | 安徽凌宇电缆科技有限公司 | Durable cable |
| CN113488252B (en) * | 2021-06-17 | 2023-02-28 | 安徽凌宇电缆科技有限公司 | Durable cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Double insulated stranded fire-resistant long-life cable and wire Effective date of registration: 20220324 Granted publication date: 20200221 Pledgee: Bank of China Limited by Share Ltd. Cangzhou branch Pledgor: Dexin Cable Group Co.,Ltd. Registration number: Y2022130000018 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230427 Granted publication date: 20200221 Pledgee: Bank of China Limited by Share Ltd. Cangzhou branch Pledgor: Dexin Cable Group Co.,Ltd. Registration number: Y2022130000018 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |