CN212209001U - Stepped water-releasing cooling type B1-grade medium-voltage aluminum alloy fireproof cable - Google Patents
Stepped water-releasing cooling type B1-grade medium-voltage aluminum alloy fireproof cable Download PDFInfo
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- CN212209001U CN212209001U CN202020902120.1U CN202020902120U CN212209001U CN 212209001 U CN212209001 U CN 212209001U CN 202020902120 U CN202020902120 U CN 202020902120U CN 212209001 U CN212209001 U CN 212209001U
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Abstract
The utility model discloses a step water release cooling type B1 level medium voltage aluminum alloy fireproof cable, including the cable core, the cable core is formed by single sinle silk or three sinle silks transposition, and every sinle silk comprises aluminum alloy abnormal shape conductor, conductor shielding layer, insulating layer, insulation shielding layer, metallic shield area, and the cable core is wholly crowded outward and is wrapped up with first fire-resistant oxygen barrier, and is filled with low smoke and zero halogen fire-retardant filler in the space between first fire-resistant oxygen barrier and the sinle silk; the first fireproof oxygen-isolating layer is sequentially provided with a cooling fireproof layer, a first fireproof heat-insulating layer, a second fireproof oxygen-isolating layer, a cooling heat-insulating armor fire-blocking layer, a cooling fire-isolating layer, a second fireproof heat-insulating layer and a fire-retardant outer protective layer. The utility model discloses the cable has fire-retardant, fire-retardant characteristic, fire-resistant characteristic.
Description
Technical Field
The utility model relates to a cable field for power transmission specifically is a step water release cooling type B1 level middling pressure aluminum alloy fireproof cable.
Background
With the rapid development of urbanization and the high progress of building technology in China, various large buildings, such as large airports, large railway stations, large gymnasiums, large theaters, large exhibition halls, large office buildings and the like, become symbolic signs of urban modernization. With the increasing of the volume ratio, the electric equipment and the power consumption of large buildings, the 1kV low-voltage power cable cannot completely meet the transmission requirement of the power consumption, so that a 10kV or 35kV medium-voltage power cable is required to be used inside the building to realize the transmission of high-power electric energy. However, since the power cable needs to pass through building facilities and relatively densely populated areas, in order to avoid a fire accident caused by the power cable or a secondary accident caused by the power cable in case of damage by the fire, the power cable needs to have a reliable fireproof function. However, the 10kV or 35kV medium-voltage aluminum alloy fireproof cable has a great difficulty in realizing a fireproof function due to high voltage level and a special core structure.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a step water release cooling type B1 level middling pressure aluminum alloy fireproof cable to solve the problem that the fire prevention function that prior art 10kV or 35kV middling pressure aluminum alloy fireproof cable exists realizes the difficulty.
In order to achieve the above purpose, the utility model discloses the technical scheme who adopts is:
step water release cooling type B1 level middling pressure aluminum alloy fireproof cable, its characterized in that: the cable comprises a cable core, wherein the cable core consists of a single wire core or is formed by twisting three wire cores, each wire core consists of an aluminum alloy special-shaped conductor, a conductor shielding layer coated outside the aluminum alloy special-shaped conductor, an insulating layer coated outside the conductor shielding layer and an insulating shielding layer coated outside the insulating layer, and a metal shielding tape is wrapped outside the insulating shielding layer; a first fire-resistant oxygen-isolating layer is extruded outside a metal shielding belt of a cable core consisting of a single wire core, or the first fire-resistant oxygen-isolating layer is extruded outside the cable core consisting of three wire cores integrally, and a low-smoke halogen-free flame-retardant filler is filled in a gap between the first fire-resistant oxygen-isolating layer and the wire cores; the first fire-resistant oxygen-isolating layer is wrapped with a cooling fireproof layer in an extruding mode, the cooling fireproof layer is wrapped with a first fire-resistant heat-insulating layer in an outer wrapping mode, the first fire-resistant heat-insulating layer is wrapped with a second fire-resistant oxygen-isolating layer in an outer wrapping mode, the second fire-resistant oxygen-isolating layer is wrapped with a cooling heat-insulating armor fire-blocking layer in an outer wrapping mode, the cooling heat-insulating armor fire-blocking layer is wrapped with a cooling heat-insulating layer in an outer wrapping mode, and the second fire-resistant heat-insulating layer is wrapped with a second fire-resistant heat-insulating.
The step water release cooling type B1 level medium voltage aluminum alloy fireproof cable is characterized in that: the aluminum alloy special-shaped conductor is formed by twisting a plurality of special-shaped aluminum alloy monofilaments.
The step water release cooling type B1 level medium voltage aluminum alloy fireproof cable is characterized in that: the cooling fireproof layer is made of an inorganic compound material with water releasing and cooling characteristics, and the critical temperature range of water releasing and cooling is 150-250 ℃, and is preferably 200 ℃.
The step water release cooling type B1 level medium voltage aluminum alloy fireproof cable is characterized in that: the temperature-reducing heat-insulating armored fire-blocking layer is armored by a metal belt, and the armor type is a metal belt interlocking armor structure.
The step water release cooling type B1 level medium voltage aluminum alloy fireproof cable is characterized in that: the temperature-reducing and fire-isolating layer is made of an inorganic compound material with water releasing and temperature-reducing characteristics, and the critical temperature range of water releasing and temperature reducing in decomposition is 300-400 ℃, and is preferably 350 ℃.
The step water release cooling type B1 level medium voltage aluminum alloy fireproof cable is characterized in that: the fire-retardant outer protective layer is made of low-smoke halogen-free flame-retardant polyolefin material, preferably B1-grade special protective sleeve material with high flame retardance and combustion crust formation.
Compared with the prior art, the utility model discloses the advantage does:
the utility model provides a step water-releasing cooling type B1-grade medium-voltage aluminum alloy fireproof cable, which has the characteristics of flame retardance and can not generate combustion supporting to the surrounding environment; the cable has the fire-resistant characteristic, and even if the cable is completely exposed to a fire, the cable cannot cause instant power failure to influence escape and rescue; the cable has the characteristics of low smoke, low toxicity, low corrosion, low heat release, no dripping and the like, and can not cause secondary damage to the periphery in case of fire.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
As shown in fig. 1, the stepped water release cooling type B1-level medium voltage aluminum alloy fireproof cable comprises a cable core, wherein the cable core is composed of a single wire core 1, or the cable core is formed by twisting three wire cores 1, each wire core 1 is respectively composed of an aluminum alloy special-shaped conductor 11, a conductor shielding layer 12 coated outside the aluminum alloy special-shaped conductor 11, an insulating layer 13 coated outside the conductor shielding layer 12, and an insulating shielding layer 14 coated outside the insulating layer 13, a metal shielding tape 15 (in this embodiment, a copper shielding tape) is wound around the insulating shielding layer 14, and the conductor shielding layer 12, the insulating layer 13, and the insulating shielding layer 14 are co-extruded in three layers; a first fire-resistant oxygen-isolating layer 3 is extruded outside a metal shielding belt 15 of the cable core consisting of a single wire core 1, or the first fire-resistant oxygen-isolating layer 3 is extruded outside the cable core consisting of three wire cores 1 integrally, and a low-smoke halogen-free flame-retardant filler 2 is filled in a gap between the first fire-resistant oxygen-isolating layer 3 and the wire cores 1; first fire-resistant 3 outer crowded packages that separate oxygen layer have cooling flame retardant coating 4, cooling flame retardant coating 4 has first fire-resistant heat insulation layer 5 around the package outward, first fire-resistant heat insulation layer 5 outer crowded package has the second fire-resistant oxygen layer 6 that separates, the second fire-resistant oxygen layer 6 that separates has cooling thermal-insulated armor fire blocking layer 7 around the package outward, cooling thermal-insulated armor fire blocking layer 7 outer crowded package has cooling fire-insulated layer 8, cooling fire-insulated layer 8 has second fire-resistant heat insulation layer 9 around the package outward, second fire-resistant heat insulation layer 9 outer crowded package has back-fire relief outer jacket 10.
The utility model discloses in, aluminum alloy abnormal shape conductor 11 is twisted by a plurality of heterotypic aluminum alloy monofilaments and is formed, has characteristics such as the coefficient of stiction is high, the outward appearance is smooth, round.
The utility model discloses in, cooling flame retardant coating 4 adopts the inorganic compound material that has the cooling characteristic of releasing water, and sodium silicate, aluminium hydroxide, cementing agent constitute, and its critical temperature scope of decomposing the cooling of releasing water is 150 ℃ to 250 ℃, preferably 200 ℃, has the cooling aluminum alloy function.
The utility model discloses in, the thermal-insulated armor of cooling keeps off fire layer 7 and adopts the strap armor, and the armor pattern is the chain armor structure of strap, has the cooling, insulates against heat and shock resistance function.
The utility model discloses in, cooling fire barrier 8 adopts the inorganic compound material that has the water release cooling characteristic, comprises sodium silicate, magnesium hydrate, cementing agent, and its critical temperature scope that decomposes the water release cooling is 300 ℃ to 400 ℃, preferably 350 ℃, has the cooling and separates the fire function.
The utility model discloses in, fire-retardant outer jacket 10 adopts low smoke and zero halogen flame retardant polyolefin material, and the preferred special sheath material of B1 level that has fire-retardant and crust has the back-fire relief, does not have steamed, low smoke, low toxicity, low corrosion, low calorific value and does not drip etc. characteristic.
The utility model discloses step water release cooling type B1 level middling pressure aluminum alloy fireproof cable is through setting up cooling flame retardant coating, the thermal-insulated armor of cooling keeps off the fire bed, the fire bed structure is separated in the cooling, makes the cable form by outer "step" cooling effect to the interior, has solved the unable problem that realizes fire-resistant function of middling pressure cable.
The embodiments of the present invention are only descriptions of the preferred embodiments of the present invention, not right the present invention is designed and limited, without departing from the design concept of the present invention, the technical personnel in the field should fall into the protection scope of the present invention for various modifications and improvements made by the technical solution of the present invention, and the technical contents of the present invention are all recorded in the claims.
Claims (6)
1. Step water release cooling type B1 level middling pressure aluminum alloy fireproof cable, its characterized in that: the cable comprises a cable core, wherein the cable core consists of a single wire core or is formed by twisting three wire cores, each wire core consists of an aluminum alloy special-shaped conductor, a conductor shielding layer coated outside the aluminum alloy special-shaped conductor, an insulating layer coated outside the conductor shielding layer and an insulating shielding layer coated outside the insulating layer, and a metal shielding tape is wrapped outside the insulating shielding layer; a first fire-resistant oxygen-isolating layer is extruded outside a metal shielding belt of a cable core consisting of a single wire core, or the first fire-resistant oxygen-isolating layer is extruded outside the cable core consisting of three wire cores integrally, and a low-smoke halogen-free flame-retardant filler is filled in a gap between the first fire-resistant oxygen-isolating layer and the wire cores; the first fire-resistant oxygen-isolating layer is wrapped with a cooling fireproof layer in an extruding mode, the cooling fireproof layer is wrapped with a first fire-resistant heat-insulating layer in an outer wrapping mode, the first fire-resistant heat-insulating layer is wrapped with a second fire-resistant oxygen-isolating layer in an outer wrapping mode, the second fire-resistant oxygen-isolating layer is wrapped with a cooling heat-insulating armor fire-blocking layer in an outer wrapping mode, the cooling heat-insulating armor fire-blocking layer is wrapped with a cooling heat-insulating layer in an outer wrapping mode, and the second fire-resistant heat-insulating layer is wrapped with a second fire-resistant heat-insulating.
2. The step water release cooling type B1 level medium voltage aluminum alloy fireproof cable of claim 1, wherein: the aluminum alloy special-shaped conductor is formed by twisting a plurality of special-shaped aluminum alloy monofilaments.
3. The step water release cooling type B1 level medium voltage aluminum alloy fireproof cable of claim 1, wherein: the temperature-reducing fireproof layer is made of an inorganic compound material with water releasing and temperature-reducing characteristics.
4. The step water release cooling type B1 level medium voltage aluminum alloy fireproof cable of claim 1, wherein: the temperature-reducing heat-insulating armored fire-blocking layer is armored by a metal belt, and the armor type is a metal belt interlocking armor structure.
5. The step water release cooling type B1 level medium voltage aluminum alloy fireproof cable of claim 1, wherein: the temperature-reducing and fire-isolating layer is made of an inorganic compound material with water releasing and temperature-reducing characteristics.
6. The step water release cooling type B1 level medium voltage aluminum alloy fireproof cable of claim 1, wherein: the fire-retardant outer protective layer is made of low-smoke halogen-free flame-retardant polyolefin material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020902120.1U CN212209001U (en) | 2020-05-26 | 2020-05-26 | Stepped water-releasing cooling type B1-grade medium-voltage aluminum alloy fireproof cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020902120.1U CN212209001U (en) | 2020-05-26 | 2020-05-26 | Stepped water-releasing cooling type B1-grade medium-voltage aluminum alloy fireproof cable |
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| Publication Number | Publication Date |
|---|---|
| CN212209001U true CN212209001U (en) | 2020-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020902120.1U Active CN212209001U (en) | 2020-05-26 | 2020-05-26 | Stepped water-releasing cooling type B1-grade medium-voltage aluminum alloy fireproof cable |
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| Country | Link |
|---|---|
| CN (1) | CN212209001U (en) |
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- 2020-05-26 CN CN202020902120.1U patent/CN212209001U/en active Active
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