CN217035226U - Ultra-soft mineral insulation bare sheath type fireproof cable - Google Patents
Ultra-soft mineral insulation bare sheath type fireproof cable Download PDFInfo
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- CN217035226U CN217035226U CN202220967582.0U CN202220967582U CN217035226U CN 217035226 U CN217035226 U CN 217035226U CN 202220967582 U CN202220967582 U CN 202220967582U CN 217035226 U CN217035226 U CN 217035226U
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Abstract
The utility model belongs to the technical field of cables, and particularly relates to an ultra-soft mineral insulation bare sheath type fireproof cable which comprises a cable core, a belting layer and a weather-proof high-flame-retardant polyolefin sheath, wherein the belting layer and the weather-proof high-flame-retardant polyolefin sheath are sequentially arranged on the outer side of the cable core; the cable core comprises a conductor, a mica tape is wrapped outside the conductor, and a polyolefin flame-retardant fire-resistant insulating layer is arranged outside the mica tape; the belting layer comprises two layers of high-flame-retardant belting, and a fire-isolating layer is arranged between the high-flame-retardant belting; wherein the weather-resistant high-flame-retardant polyolefin sheath is made of a thermoplastic low-smoke halogen-free B1-grade high-flame-retardant polyolefin sheath material. The fireproof cable provided by the utility model does not need to adopt a metal sheath, and can meet the relevant type test content of a product; the fire-proof cable adopts the fire-proof layer and the special high-flame-retardant sheath to enhance the abrasion resistance and the flame-retardant capability of the cable, thereby prolonging the service life of the cable; the cable has excellent bending performance, convenient installation and operation of products and low cost.
Description
Technical Field
The utility model belongs to the technical field of cables, and particularly relates to an ultra-soft mineral insulation bare sheath type fireproof cable.
Background
Cables are used to transmit power or information from one location to another, and appear like a rope, usually consisting of several or groups of wires twisted together. Each group of wires comprises at least more than two wires, and each group of wires are insulated with each other, twisted around a center and coated with an insulating coating on the outer surface. The cable has the characteristics of internal electrification and external insulation, is used for connecting circuits or electrical appliances and the like, comprises a power cable, a shielding cable, a flame-retardant cable, a fireproof cable and the like, and is respectively applied to different occasions.
The surface layer of the existing fireproof cable is a metal sheath, so that the existing fireproof cable is difficult to bend and install, brings great operation difficulty for installation constructors and is expensive; therefore, there is a need for a fire-resistant cable that can replace this type of jacket to meet market needs.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problems in the prior art, and provides the ultra-soft mineral insulation bare sheath type fireproof cable, which is convenient to bend after being finished, has 50% higher bending performance than that of a common cable, is superior to a standard cable, and is convenient to install and construct.
The technical scheme of the utility model is as follows:
a super-soft mineral insulation bare sheath type fireproof cable comprises a cable core, a belting layer and a weather-proof high-flame-retardant polyolefin sheath, wherein the belting layer and the weather-proof high-flame-retardant polyolefin sheath are sequentially arranged on the outer side of the cable core; the cable core comprises a conductor, a mica tape is wrapped outside the conductor, and a polyolefin flame-retardant fire-resistant insulating layer is arranged outside the mica tape; the belting layer comprises two layers of high-flame-retardant belting, and a fire-isolating layer is arranged between the high-flame-retardant belting;
the weather-proof high-flame-retardant polyolefin sheath is made of a thermoplastic low-smoke halogen-free B1-grade high-flame-retardant polyolefin sheath material.
Further, the polyolefin flame-retardant and fire-resistant insulating layer is made of a flame-retardant polyolefin material, and the thickness of the polyolefin flame-retardant and fire-resistant insulating layer is 0.8-3.2 mm; specifically, the polyolefin flame-retardant and fire-resistant insulating layer is made of a thermoplastic ceramic halogen-free low-smoke flame-retardant polyolefin flame-retardant insulating material TWD.
Further, the fire barrier layer is made of high-flame-retardant oxygen barrier layer filler.
Further, the flame-retardant filling layer is a flame-retardant high-temperature filling rope.
Further, the conductor is a copper conductor.
Furthermore, the number of the cable cores is three or more.
The utility model has the beneficial effects that:
the ultra-soft mineral insulation bare sheath type fireproof cable provided by the utility model does not need to adopt a metal sheath, and can meet the relevant type test content of a product; the fire-proof cable adopts the fire-proof layer and the special high-flame-retardant sheath to enhance the abrasion resistance and the flame retardant capability of the cable, and because each layer almost has no gap, the hidden danger that the cable core and the sheath are separated is greatly reduced, and the service life of the cable is prolonged.
The cable has bending performance superior to that of a standard cable, flexibility one time superior to that of the standard cable, product installation performance easier to operate and cost reduction of at least 20%.
Drawings
FIG. 1 is a first schematic view of a cable structure according to the present invention;
FIG. 2 is a second schematic view of a cable structure according to the present invention;
FIG. 3 is a third schematic view of a cable structure according to the present invention;
in the above figures, 1, conductor; 2. mica tapes; 3. a polyolefin flame-retardant fire-resistant insulating layer; 4. a flame retardant filler layer; 5. flame-retardant wrapping tape; 6. a fire barrier layer; 7. weather-proof high-flame-retardant polyolefin sheath.
Detailed Description
The utility model is further described below with reference to the figures and examples.
In the description of the present invention, it should be noted that the terms "inside", "outside", "upper", "lower", and the like indicate orientations or positional relationships based on positional relationships shown in the drawings, which are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Example 1
As shown in fig. 1-3, the utility model relates to an ultra-soft mineral insulation bare sheath type fireproof cable, which comprises a cable core, a belting layer and a weather-proof high-flame-retardant polyolefin sheath 7, wherein the belting layer and the weather-proof high-flame-retardant polyolefin sheath are sequentially arranged on the outer side of the cable core, and a flame-retardant filling layer 4 is arranged between the cable core and the belting layer; the cable core comprises a conductor 1, a mica tape 2 wraps the outer side of the conductor 1, and a polyolefin flame-retardant fire-resistant insulating layer 3 is arranged on the outer side of the mica tape 2; the belting layer comprises two layers of high-flame-retardant belting 5, and a fire-insulating layer 6 is arranged between the high-flame-retardant belting 5.
Among the above-mentioned naked sheath type fireproof cable of super gentle mineral insulation, inlayer center is the cable core, and the cable core includes conductor 1 and conductor 1 outside parcel mica tape 2, still including the fire-retardant fire-resistant insulating layer 3 of one deck polyolefin that increases, closely the stranding back, the high fire-retardant band 5 of cable core cladding in proper order, separates fire layer 6, is equipped with fire-retardant filling layer 4 between cable core and the high fire-retardant band 5 of high fire-retardant band, separates the 6 outside of fire layer and adds one deck high fire-retardant band 5 again, and outmost sets up resistant high fire-retardant polyolefin sheath 7 of waiting. In order to ensure the characteristics of the sheath, the weather-resistant high-flame-retardant polyolefin sheath 7 is made of thermoplastic low-smoke halogen-free B1-grade high-flame-retardant polyolefin sheath material with the brand number: AFRC/20-B1, manufacturer: shanghai to Zhengdao Polymer materials Ltd.
The polyolefin flame-retardant fire-resistant insulating layer 3 added on the outer layer of the cable core is made of flame-retardant polyolefin materials and has the function of ensuring the insulating and fire-resistant performance, and the thickness of the polyolefin flame-retardant fire-resistant insulating layer is within any size range value between 0.8 mm and 3.2 mm; specifically, the polyolefin flame-retardant and flame-retardant insulating layer 3 is made of a thermoplastic ceramic halogen-free low-smoke flame-retardant polyolefin flame-retardant insulating material TWD, and the material manufacturer comprises the following components: shanghai Kott New materials, Inc.
In this embodiment, the flame-retardant filling layer 4 disposed in the middle is made of a flame-retardant high-temperature filling rope ZR-GPT, and the material sources are: yangzhou Tengfei cable and electrical appliance materials, Inc. The flame-retardant high-temperature filling rope has the characteristics of high temperature resistance, super softness, good flame retardant property and the like, and can play a role in high temperature resistance and flame retardance when being used for a filling layer of a cable.
The fire barrier layer 6 is a high flame-retardant oxygen barrier layer filler, and the fire barrier layer 6 is matched with the weather-resistant high flame-retardant polyolefin sheath 7 to enhance the wear resistance, flame retardance and fire resistance of the cable.
Furthermore, the conductor 1 adopts copper wires as a conductive material, and the number of cable cores formed by twisting the conductor 1 is three or more. As can be seen from fig. 1 to 3, the cable cores are uniformly distributed in the cable, and are in triangular distribution when the number of the cable cores is three, and are in annular distribution when the number of the cable cores is five, and when the number of the cable cores exceeds more than 10, for example, the number of the cable cores is 12, the three cable cores are in triangular distribution at the most central position of the cable, and the rest cable cores are uniformly distributed in annular distribution around the triangle; when the cable is used specifically, the specific distribution mode of the cable core is not limited, as long as the stability of the cable core in the cable can be ensured, and gapless and compactness between the cable core and the inner layer of the cable can be ensured.
Test example 1
The bending test is carried out on the ultra-soft mineral insulation bare sheath type fireproof cable, and the results are shown in the following table 1:
TABLE 1 Cable bending test results
According to the tests, the ultra-soft mineral insulation bare sheath type fireproof cable provided by the utility model has better bending performance. In addition, the cable is more stable in the aspect of fire resistance test during use and in the process of installation and use by customers.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described above, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or modification made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The ultra-soft mineral insulation bare sheath type fireproof cable is characterized by comprising a cable core, a belting layer and a weather-proof high-flame-retardant polyolefin sheath, wherein the belting layer and the weather-proof high-flame-retardant polyolefin sheath are sequentially arranged on the outer side of the cable core; the cable core comprises a conductor, a mica tape is wrapped outside the conductor, and a polyolefin flame-retardant fire-resistant insulating layer is arranged outside the mica tape; the belting layer comprises two layers of high-flame-retardant belting, and a fire-isolating layer is arranged between the high-flame-retardant belting;
the weather-proof high-flame-retardant polyolefin sheath is made of a thermoplastic low-smoke halogen-free B1-grade high-flame-retardant polyolefin sheath material.
2. The fireproof cable of claim 1, wherein the flame-retardant and fire-resistant insulating polyolefin layer is made of flame-retardant polyolefin and has a thickness of 0.8-3.2 mm.
3. The fireproof cable of claim 2, wherein the polyolefin flame-retardant and fire-resistant insulation layer is made of thermoplastic ceramic halogen-free low-smoke flame-retardant polyolefin flame-resistant insulation material TWD.
4. The fire cable of claim 1, wherein the fire barrier is a high flame retardant oxygen barrier filler.
5. The fire-rated cable of claim 1, wherein the fire-retardant filler layer is a fire-retardant high temperature filler rope.
6. The fire electrical cable of claim 1, wherein the conductor is a copper conductor.
7. The fireproof cable of claim 1, wherein the number of the cable cores is three or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220967582.0U CN217035226U (en) | 2022-04-25 | 2022-04-25 | Ultra-soft mineral insulation bare sheath type fireproof cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220967582.0U CN217035226U (en) | 2022-04-25 | 2022-04-25 | Ultra-soft mineral insulation bare sheath type fireproof cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217035226U true CN217035226U (en) | 2022-07-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220967582.0U Active CN217035226U (en) | 2022-04-25 | 2022-04-25 | Ultra-soft mineral insulation bare sheath type fireproof cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217035226U (en) |
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2022
- 2022-04-25 CN CN202220967582.0U patent/CN217035226U/en active Active
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