CN213519362U - Low-smoke halogen-free flame-retardant fire-resistant medium-voltage power cable - Google Patents
Low-smoke halogen-free flame-retardant fire-resistant medium-voltage power cable Download PDFInfo
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- CN213519362U CN213519362U CN202023036055.8U CN202023036055U CN213519362U CN 213519362 U CN213519362 U CN 213519362U CN 202023036055 U CN202023036055 U CN 202023036055U CN 213519362 U CN213519362 U CN 213519362U
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Abstract
The utility model provides a fire-retardant fire-resistant medium voltage power cable of low smoke and zero halogen, including conductor and cable core skeleton, the conductor coats the conductor shielding layer outward, is equipped with the insulating layer outside the conductor shielding layer, wraps up the insulation shielding layer outside the insulating layer, the cable core skeleton wraps up interior band layer outward, and the outer cladding pottery silicon rubber flame retardant coating that wraps up of interior band layer is equipped with low smoke and zero halogen oxygen barrier outward, and low smoke and zero halogen oxygen barrier wraps up the outer band layer outward, wraps up the armor outside the outer band layer, is equipped with low smoke and zero halogen fire-retardant oversheath outward, and the outside of low smoke and zero halogen fire-retardant oversheath evenly is equipped with a plurality of wear-resisting protrusions along cable core circumference direction, and the strengthening rib is; the cable core framework is characterized in that an elastic arc piece is arranged at the end part of the cable core framework, a plurality of rolling balls are arranged on the elastic arc piece in a rotating mode towards the arc surface of the inner side wall of the inner bag belt layer, and the rolling balls are tangent to the inner bag belt layer.
Description
Technical Field
The utility model relates to a wire and cable technical field indicates a fire-retardant fire-resistant middling pressure power cable of low smoke and zero halogen especially.
Background
With the development and progress of the society in China, buildings such as high-rise buildings, large shopping malls and the like are continuously increased, the power consumption is continuously improved, and if low-voltage power supply is adopted, great investment is needed in the cable consumption, the laying and installation workload, the laying space consumption and the like, so that the gradual adoption of medium-voltage power supply to reduce the cost is a necessary trend in the development of the power industry. At present, when a fire disaster happens to the existing medium-voltage power cable, the cable is quickly burnt, and meanwhile, toxic gas is emitted, so that great obstruction is brought to escape and rescue work; meanwhile, the power cable is low in deformation prevention and anti-extrusion performance, and the service life of the power cable is seriously influenced.
Therefore, the utility model provides a fire-retardant fire-resistant medium voltage power cable of low smoke and zero halogen to solve the problem that above-mentioned exists.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to overcome prior art's shortcoming, provide a fire-retardant fire-resistant middling pressure power cable of low smoke and zero halogen.
In order to solve the technical problem, the utility model provides a following technical scheme: a low-smoke halogen-free flame-retardant fire-resistant medium-voltage power cable comprises a conductor and a cable core framework, wherein the conductor is coated with a conductor shielding layer, an insulating layer is arranged outside the conductor shielding layer, the insulating layer is coated with an insulating shielding layer, the cable core framework is coated with an inner wrapping tape layer, the inner wrapping tape layer is coated with a ceramic silicon rubber flame-resistant layer, a low-smoke halogen-free oxygen isolating layer is arranged outside the ceramic silicon rubber flame-resistant layer, the outer wrapping tape layer is coated outside the low-smoke halogen-free oxygen isolating layer, an armor layer is coated outside the outer wrapping tape layer, a low-smoke halogen-free flame-retardant outer sheath is arranged outside the armor layer, a plurality of wear-resistant bulges are uniformly arranged; the cable core framework is characterized in that an elastic arc piece is arranged at the end part of the cable core framework, a plurality of rolling balls are arranged on the elastic arc piece in a rotating mode towards the arc surface of the inner side wall of the inner bag belt layer, and the rolling balls are tangent to the inner bag belt layer.
As an optimized technical scheme of the utility model, the mounting hole has been seted up on the elasticity arc piece, the roll ball roll mounting is in the mounting hole.
As an optimized technical proposal of the utility model, the insulating layer is formed by extruding crosslinked polyethylene materials.
As an optimal technical scheme, the insulating shield overlaps outward around package one deck copper strips shielding layer, and this copper strips shielding layer adopts soft copper strip to form around the package, and it takes the lid rate not less than 15%.
As an optimized technical scheme of the utility model, the space of the inside cable core of endocyst band layer is filled with the glass fiber rope.
As an optimized technical proposal of the utility model, the ceramic silicon rubber fire-resistant layer is formed by combining a ceramic composite belt and ceramic silicon rubber.
As an optimized technical proposal, the low-smoke halogen-free oxygen-isolating layer is made of low-smoke halogen-free flame-retardant oxygen-isolating material.
As an optimized technical proposal of the utility model, the armor layer is a galvanized steel strip armor layer.
As an optimized technical proposal, the low-smoke halogen-free flame-retardant outer sheath is made of low-smoke halogen-free flame-retardant polyolefin material.
The utility model discloses the beneficial effect who reaches is:
1. the utility model provides a fire-retardant fire-resistant middling pressure power cable of low smoke and zero halogen, through the cable core skeleton that sets up in the cable core, the anti extrusion performance of reinforcing cable specifically does with the ability of preapring for an unfavorable turn of events:
when the cable is extruded by external force, the elastic arc piece at the end part of the cable core framework can effectively buffer the pressure, so that the cable is prevented from being damaged, the service life of the cable is effectively prolonged, and the cable is safe and reliable;
when the cable is subjected to friction force or winding force, the rolling ball arranged on the outer arc surface of the elastic arc piece in a rolling mode can absorb external acting force, so that the buffering effect is achieved, the extrusion resistance, torsion resistance and winding resistance of the cable are improved, and the service life of the cable is effectively prolonged;
2. the utility model discloses a pottery silicon rubber flame retardant coating, low smoke and zero halogen separate oxygen layer, low smoke and zero halogen fire-retardant oversheath etc. that set up for the cable has better fire-resistant flame retardant efficiency, and when the conflagration breaing out, the intensity of a fire spreads slowly, and the less visibility of cigarette is high, and harmful gas release amount is little, and the personnel of being convenient for withdraw, thereby cause the safe in utilization of cable to obtain effectively improving.
The present invention will be described in more detail with reference to the accompanying drawings and examples.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.
In the drawings:
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic diagram of the cable core skeleton structure of the present invention;
FIG. 3 is a schematic view of the structure of the elastic arc member of the present invention;
reference numbers in the figures: 1. a conductor; 2. a cable core framework; 3. a conductor shield layer; 4. an insulating layer; 5. an insulating shield layer; 6. an inner wrapping tape layer; 7. a ceramic silicon rubber fireproof layer; 8. a low-smoke halogen-free oxygen-insulating layer; 9. wrapping a belt layer; 10. an armor layer; 11. a low-smoke halogen-free flame-retardant outer sheath; 12. wear-resistant protrusions; 13. reinforcing ribs; 14. an elastic arc member; 15. a rolling ball; 16. mounting holes; 17. a glass fiber rope.
Detailed Description
The terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like in the specification indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to 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. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example (b): as shown in figures 1-3, the utility model provides a low-smoke halogen-free flame-retardant fire-resistant medium-voltage power cable, which comprises a conductor 1 and a cable core framework 2, the conductor 1 is coated with a conductor shielding layer 3, an insulating layer 4 is arranged outside the conductor shielding layer 3, an insulating shielding layer 5 is coated outside the insulating layer 4, the cable core framework 2 is wrapped with an inner wrapping tape layer 6, the inner wrapping tape layer 6 is wrapped with a ceramic silicon rubber fire-resistant layer 7, a low-smoke halogen-free oxygen-insulating layer 8 is arranged outside the ceramic silicon rubber fire-resistant layer 7, the low-smoke halogen-free oxygen-insulating layer 8 is wrapped with an outer wrapping tape layer 9, the outer wrapping tape layer 9 is wrapped with an armor layer 10, a low-smoke halogen-free flame-retardant outer sheath 11 is arranged outside the armor layer 10, a plurality of wear-resistant bulges 12 are uniformly arranged outside the low-smoke halogen-free flame-retardant outer sheath 11 along the circumferential direction of the cable core, and a reinforcing rib 13 is arranged at; the end part of the cable core framework 2 is provided with an elastic arc part 14, the elastic arc part 14 is provided with a plurality of rolling balls 15 in a rotating mode facing to the arc surface of the inner side wall of the inner band layer 6, and the rolling balls 15 are tangent to the inner band layer 6.
Furthermore, a mounting hole 16 is formed in the elastic arc piece 14, the rolling ball 15 is installed in the mounting hole 16 in a rolling mode, and when the cable is subjected to friction force or winding force, the external acting force can be absorbed by the rolling ball 15, so that the buffering effect is achieved, the extrusion resistance, torsion resistance and winding resistance of the cable are improved, and the service life of the cable is effectively prolonged.
Further, the insulating layer 4 is formed by extruding a cross-linked polyethylene material.
Furthermore, the insulating shielding layer 5 is externally overlapped and wrapped with a copper strip shielding layer, the copper strip shielding layer is formed by winding a soft copper strip, and the covering rate is not less than 15%.
Furthermore, the gaps of the cable core inside the inner band layer 6 are filled with glass fiber ropes 17.
Further, the ceramic silicon rubber fire-resistant layer 7 is formed by combining a ceramic composite belt and ceramic silicon rubber.
Further, the low-smoke halogen-free oxygen-insulating layer 8 is made of a low-smoke halogen-free flame-retardant oxygen-insulating material.
Further, the armor layer 10 is a galvanized steel strip armor layer.
Further, the low-smoke halogen-free flame-retardant outer sheath 11 is made of a low-smoke halogen-free flame-retardant polyolefin material.
The above embodiments are merely to describe the preferred embodiments of the present invention, and are not to limit the scope of the present invention, and various modifications and improvements made by the technical solutions of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.
The utility model discloses the part that does not relate to all is the same with prior art or can adopt prior art to realize.
Claims (9)
1. A low-smoke halogen-free flame-retardant fire-resistant medium-voltage power cable is characterized by comprising a conductor (1) and a cable core framework (2), wherein the conductor (1) is externally coated with a conductor shielding layer (3), an insulating layer (4) is arranged outside the conductor shielding layer (3), the insulating layer (4) is externally coated with an insulating shielding layer (5), the cable core framework (2) is externally coated with an inner wrapping tape layer (6), the inner wrapping tape layer (6) is externally coated with a ceramic silicon rubber flame-retardant layer (7), the ceramic silicon rubber flame-retardant layer (7) is externally provided with a low-smoke halogen-free oxygen-insulating layer (8), the low-smoke halogen-free oxygen-insulating layer (8) is externally coated with an outer wrapping tape layer (9), the outer wrapping tape layer (9) is externally coated with an armor layer (10), a low-smoke halogen-free flame-retardant outer sheath (11) is arranged outside the armor layer (10), and a, a reinforcing rib (13) is arranged at the center of each wear-resistant bulge (12); the cable core framework is characterized in that an elastic arc piece (14) is arranged at the end part of the cable core framework (2), a plurality of rolling balls (15) are arranged on the elastic arc piece (14) in a rotating mode towards the arc surface of the inner side wall of the inner bag belt layer (6), and the rolling balls (15) are tangent to the inner bag belt layer (6).
2. The low-smoke halogen-free flame-retardant fire-resistant medium-voltage power cable according to claim 1, wherein the elastic arc piece (14) is provided with a mounting hole (16), and the rolling ball (15) is installed in the mounting hole (16) in a rolling manner.
3. The low-smoke halogen-free flame-retardant fire-resistant medium-voltage power cable according to claim 1, wherein the insulating layer (4) is extruded from a cross-linked polyethylene material.
4. The low-smoke halogen-free flame-retardant fire-resistant medium-voltage power cable according to claim 1, wherein a copper strip shielding layer is lapped and wrapped outside the insulation shielding layer (5), the copper strip shielding layer is formed by winding and wrapping a soft copper strip, and the lapping rate is not less than 15%.
5. A low smoke zero halogen flame retardant fire resistant medium voltage power cable according to claim 1 characterized in that the voids of the inner core of the inner tape layer (6) are filled with glass fiber ropes (17).
6. The low-smoke halogen-free flame-retardant fire-resistant medium-voltage power cable according to claim 1, wherein the ceramic silicon rubber flame-retardant layer (7) is formed by combining a ceramic composite tape and ceramic silicon rubber.
7. The low smoke zero halogen flame retardant fire resistant medium voltage power cable according to claim 1, characterized in that the low smoke zero halogen oxygen barrier layer (8) is made of low smoke zero halogen flame retardant oxygen barrier material.
8. A low smoke zero halogen flame retardant fire resistant medium voltage power cable according to claim 1 characterized in that the armor (10) is a galvanized steel armor.
9. A low smoke zero halogen flame retardant fire resistant medium voltage power cable according to claim 1 characterized in that said outer sheath (11) is made of a low smoke zero halogen flame retardant polyolefin material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023036055.8U CN213519362U (en) | 2020-12-16 | 2020-12-16 | Low-smoke halogen-free flame-retardant fire-resistant medium-voltage power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023036055.8U CN213519362U (en) | 2020-12-16 | 2020-12-16 | Low-smoke halogen-free flame-retardant fire-resistant medium-voltage power cable |
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| CN213519362U true CN213519362U (en) | 2021-06-22 |
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| CN202023036055.8U Active CN213519362U (en) | 2020-12-16 | 2020-12-16 | Low-smoke halogen-free flame-retardant fire-resistant medium-voltage power cable |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116994806A (en) * | 2023-09-04 | 2023-11-03 | 南通米兰特电气有限公司 | Wear-resistant type travelling cable for elevator and use method thereof |
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2020
- 2020-12-16 CN CN202023036055.8U patent/CN213519362U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116994806A (en) * | 2023-09-04 | 2023-11-03 | 南通米兰特电气有限公司 | Wear-resistant type travelling cable for elevator and use method thereof |
| CN116994806B (en) * | 2023-09-04 | 2024-04-30 | 南通米兰特电气有限公司 | Wear-resistant type travelling cable for elevator and use method thereof |
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