CN214588146U - Fireproof cable preventing fire clay eccentricity - Google Patents
Fireproof cable preventing fire clay eccentricity Download PDFInfo
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- CN214588146U CN214588146U CN202120759216.1U CN202120759216U CN214588146U CN 214588146 U CN214588146 U CN 214588146U CN 202120759216 U CN202120759216 U CN 202120759216U CN 214588146 U CN214588146 U CN 214588146U
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Abstract
The fireproof cable comprises three cable cores, wherein a first sheath is arranged outside a whole formed by the three cable cores, the inner side of the first sheath is in close contact with the outermost side of the whole formed by the three cable cores, and a first fireproof mud layer is filled between the first sheath and the cable cores; the outer side of the first sheath is provided with a second sheath, a second fireproof mud layer is filled between the first sheath and the second sheath, and an outer protective layer is arranged outside the second sheath. The utility model provides a fireproof cable preventing the eccentricity of fire clay, which is provided with two layers of sheaths, wherein the first sheath at the inner side ensures the integral roundness of a wire core and is not easy to be sunk; the second sheath is arranged outside the first sheath, so that the thickness of the fire clay is ensured, and the roundness of the cable is further ensured. The cable is difficult for sunkenly receiving inside chamotte filling layer when the extrusion, can not lead to off-centre, has improved the circularity of cable simultaneously.
Description
Technical Field
The utility model relates to the technical field of cables, especially a prevent eccentric fireproof cable of chamotte.
Background
As shown in fig. 1, three cable cores of a traditional three-core fireproof medium-voltage cable are arranged in a triangular shape, and then a fireproof mud layer and an outer protective layer are arranged outside the three cable cores; however, the cable structure shown in fig. 1 is easy to deform when being compressed by external force, especially at A, B, C in fig. 1, because the inner fire-resistant clay layer is thinner, it is more easy to sink when being compressed.
Disclosure of Invention
The utility model aims to solve the technical problem that a prevent eccentric fireproof cable of chamotte is provided, can prevent that the cable surface from receiving to lead to inside chamotte structure to take place off-centre when extrudeing.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: the fireproof cable comprises three cable cores, wherein a first sheath is arranged outside a whole formed by the three cable cores, the inner side of the first sheath is in close contact with the outermost side of the whole formed by the three cable cores, and a first fireproof mud layer is filled between the first sheath and the cable cores; the outer side of the first sheath is provided with a second sheath, a second fireproof mud layer is filled between the first sheath and the second sheath, and an outer protective layer is arranged outside the second sheath.
Preferably, the inner side and the outer side of the first sheath are both in a sawtooth structure, and the inner side of the second sheath is in a sawtooth structure.
Preferably, the outer protective layer sequentially comprises a belting layer and a sheath layer from inside to outside.
Preferably, the cable core sequentially comprises a conductor, an inner shielding layer, an insulating layer and an outer shielding layer from inside to outside.
Preferably, the first sheath and the second sheath are both made of polyethylene material.
The utility model provides a fireproof cable preventing the eccentricity of fire clay, which is provided with two layers of sheaths, wherein the first sheath at the inner side ensures the integral roundness of a wire core and is not easy to be sunk; the second sheath is arranged outside the first sheath, so that the thickness of the fire clay is ensured, and the roundness of the cable is further ensured. The cable is difficult for sunkenly receiving inside chamotte filling layer when the extrusion, can not lead to off-centre, has improved the circularity of cable simultaneously.
Drawings
The invention will be further explained with reference to the following figures and examples:
FIG. 1 is a schematic diagram of a prior art structure;
fig. 2 is a schematic structural diagram of the present invention.
Detailed Description
As shown in fig. 2, the fireproof cable capable of preventing the eccentricity of the fireproof clay comprises three cable cores 1, wherein a first sheath 2 is arranged outside a whole formed by the three cable cores 1, the inner side of the first sheath 2 is in close contact with the outermost side of the whole formed by the three cable cores 1, and a first fireproof clay layer 3 is filled between the first sheath 2 and the cable cores 1; the second sheath 4 is arranged outside the first sheath 2, a second fireproof mud layer 5 is filled between the first sheath 2 and the second sheath 4, and an outer protective layer is arranged outside the second sheath 4. The intensity on inside fire clay layer has been strengthened to first sheath, is difficult for deformation when making the cable atress, and the circularity of cable has further been guaranteed to the second sheath, has increased the degree of compaction on fire clay layer to the thickness on fire clay layer in the whole cable has been increased.
Preferably, both the inner side and the outer side of the first sheath 2 are of a saw-toothed structure, and the inner side of the second sheath 4 is of a saw-toothed structure. The friction force between the refractory mortar and the sheath is increased, and the refractory mortar and the sheath are combined more tightly.
Preferably, the outer protective layer sequentially comprises a belting layer 6 and a sheath layer 7 from inside to outside.
Preferably, the cable core 1 sequentially comprises a conductor 8, an inner shielding layer 9, an insulating layer 10 and an outer shielding layer 11 from inside to outside.
The utility model discloses a construction process is comparatively simple, has compromise roundness, atress nature of cable to and the convenience of production is through the position of adjusting two-layer sheath, increases the intensity and the roundness of cable.
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 (5)
1. The utility model provides an prevent eccentric fireproof cable of fire clay which characterized in that: the fireproof cable comprises three cable cores (1), wherein a first sheath (2) is arranged outside a whole formed by the three cable cores (1), the inner side of the first sheath (2) is tightly contacted with the outermost side of the whole formed by the three cable cores (1), and a first fireproof mud layer (3) is filled between the first sheath (2) and the cable cores (1); a second sheath (4) is arranged on the outer side of the first sheath (2), a second refractory mud layer (5) is filled between the first sheath (2) and the second sheath (4), and an outer protective layer is arranged outside the second sheath (4).
2. The fire-resistant clay eccentricity-prevention fire-resistant cable according to claim 1, wherein: the inner side and the outer side of the first sheath (2) are both in a sawtooth structure, and the inner side of the second sheath (4) is in a sawtooth structure.
3. The fire-resistant clay eccentricity-prevention fire-resistant cable according to claim 1, wherein: the outer protective layer sequentially comprises a belting layer (6) and a sheath layer (7) from inside to outside.
4. The fire-resistant clay eccentricity-prevention fire-resistant cable according to claim 1, wherein: the cable core (1) sequentially comprises a conductor (8), an inner shielding layer (9), an insulating layer (10) and an outer shielding layer (11) from inside to outside.
5. The fire-resistant clay eccentricity-prevention fire-resistant cable according to claim 1, wherein: the first sheath (2) and the second sheath (4) are both made of polyethylene materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120759216.1U CN214588146U (en) | 2021-04-14 | 2021-04-14 | Fireproof cable preventing fire clay eccentricity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120759216.1U CN214588146U (en) | 2021-04-14 | 2021-04-14 | Fireproof cable preventing fire clay eccentricity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214588146U true CN214588146U (en) | 2021-11-02 |
Family
ID=78359766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120759216.1U Active CN214588146U (en) | 2021-04-14 | 2021-04-14 | Fireproof cable preventing fire clay eccentricity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214588146U (en) |
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2021
- 2021-04-14 CN CN202120759216.1U patent/CN214588146U/en active Active
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