CN211828174U - High-temperature-resistant and durable fireproof cable - Google Patents
High-temperature-resistant and durable fireproof cable Download PDFInfo
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- CN211828174U CN211828174U CN202020971050.5U CN202020971050U CN211828174U CN 211828174 U CN211828174 U CN 211828174U CN 202020971050 U CN202020971050 U CN 202020971050U CN 211828174 U CN211828174 U CN 211828174U
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Abstract
The utility model discloses a high temperature resistant and durable fireproof cable, which is characterized by comprising a filling layer, an inner fireproof layer, an outer fireproof layer and an outer sheath layer which are arranged from inside to outside in sequence, wherein the filling layer is positioned in a gap between the cable core and the inner fireproof layer; the cable core comprises a conductor and a composite insulating layer coated on the periphery of the conductor, wherein the composite insulating layer comprises a fireproof insulating layer, an inner insulating layer and an outer insulating layer which are sequentially arranged from inside to outside; the cable cores are mutually twisted; the inner insulating layer is made of a polyether-ether-ketone material, and the outer insulating layer is made of a polyolefin insulating material. The utility model discloses a structure makes the cable possess high temperature resistant, durable and fire-proof performance simultaneously, and the safety in utilization of cable is high, and long service life.
Description
Technical Field
The utility model relates to a fireproof cable technical field, concretely relates to high temperature resistant durable fireproof cable.
Background
With the development of economic strength in China and the continuous increase of power demand, the cable serving as a carrier of electric energy transmission not only needs to meet the power demand of people, but also needs to be safe, reliable, environment-friendly and harmless. Therefore, the fireproof cable is gradually widely applied, the existing fireproof cable is generally a low-smoke halogen-free cable, and the low-smoke halogen-free cable has requirements on flame retardance, smoke density and toxicity. The property and personal safety of people can be guaranteed by laying the fireproof cable in the house.
In realizing the utility model discloses an in-process, the applicant finds that current fireproof cable has following problem:
the design life of current cables is generally shorter than the life of houses. Therefore, cables which have longer service life and are not replaced in time exist in the house, the cables can be damaged due to the longer service life, the normal use of the cables is affected, and in severe cases, fire disasters are caused to endanger the safety of users.
SUMMERY OF THE UTILITY MODEL
In order to overcome the technical defect, the utility model provides a high temperature resistant durable fireproof cable.
In order to solve the above problem, the utility model discloses realize according to following technical scheme:
the utility model relates to a high temperature resistant durable fireproof cable, which is characterized in that the fireproof cable comprises a cable core, a filling layer, an inner fireproof layer, an outer fireproof layer and an outer sheath layer which are arranged in sequence from inside to outside, wherein the filling layer is positioned in a gap between the cable core and the inner fireproof layer;
the cable core comprises a conductor and a composite insulating layer coated on the periphery of the conductor, wherein the composite insulating layer comprises a fireproof insulating layer, an inner insulating layer and an outer insulating layer which are sequentially arranged from inside to outside; the cable cores are mutually twisted;
the inner insulating layer is made of a polyether-ether-ketone material, and the outer insulating layer is made of a polyolefin insulating material.
Preferably, the number of the cable cores is 1-5.
Preferably, the fireproof insulating layer is wrapped by a synthetic mica tape.
Preferably, the outer insulating layer is made by electron beam irradiation crosslinking.
Preferably, the inner fire-proof layer is made of ceramic polyolefin material.
Preferably, the inner fireproof layer is made of ceramic silicon rubber materials.
Preferably, the outer fire-resistant layer is a copper sheath.
Preferably, the filling layer is a flame-retardant filling rope.
Preferably, the outer jacket layer is made of polyolefin.
Preferably, the outer jacket layer is made by electron beam irradiation crosslinking.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses an inner insulating layer is made by polyether ether ketone material, and polyether ether ketone's the highest service temperature is 260 ℃ for the cable can be under high temperature environment normal use.
2. The utility model discloses an outer insulating layer is made by polyolefin insulation material, and the cooperation oversheath layer for the ageing speed of cable slows down, thereby improves the durability of cable greatly, increases the life of cable.
3. The utility model discloses be provided with the fire prevention insulating layer, the fire resistive construction of flame retardant coating and outer flame retardant coating in the cooperation for the fire prevention flame retardant ability of cable is strong, and the flame directly burns out the conducting structure of cable inside when can prevent to take place the conflagration, guarantees that the cable can normally transmit electricity when the conflagration.
Drawings
The following detailed description of embodiments of the invention is provided with reference to the accompanying drawings, in which:
fig. 1 is a schematic structural view of the high temperature resistant and durable fireproof cable of the present invention.
In the figure:
1-a cable core;
11-conductor, 12-composite insulating layer, 121-fireproof insulating layer, 122-inner insulating layer and 123-outer insulating layer;
2-a filling layer;
3-inner fireproof layer;
4-outer fire barrier;
5-outer sheath layer.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.
As shown in fig. 1, the preferred structure of the fire-proof cable of the present invention is durable and high temperature resistant.
High temperature resistant durable fireproof cable, it includes cable core 1, filling layer 2, interior flame retardant coating 3, outer flame retardant coating 4 and the oversheath layer 5 that sets gradually from inside to outside, wherein, filling layer 2 is located the space between cable core 1 and interior flame retardant coating 3.
The number of the cable cores 1 is 1-5, the cable cores 1 are twisted with each other, the cable cores 1 are formed by combining a conductor 11 and a composite insulating layer 12, and the composite insulating layer 12 is tightly wrapped on the periphery of the conductor 11.
In the present embodiment, preferably, the number of the cable cores 1 is three, and the three cable cores 1 are uniformly twisted by the cabling machine and are arranged in the center of the cable. The periphery of the cable core 1 is sequentially wrapped by an inner fireproof layer 3, an outer fireproof layer 4 and an outer sheath layer 5.
The conductor 11 is used for transmitting electric energy, and preferably, the conductor 11 is made of oxygen-free copper wire. The structure of the conductor 11 conforms to one of the first conductor structure or the second conductor structure specified in GB/T3956-2008, i.e., the structure of the conductor 11 is one of a solid conductor structure or a stranded conductor structure.
The composite insulating layer 12 functions to insulate, prevent fire, and protect the conductor 11. The composite insulating layer 12 is wrapped on the periphery of the conductor 11, and the composite insulating layer 12 comprises a fireproof insulating layer 121, an inner insulating layer 122 and an outer insulating layer 123 which are sequentially arranged from inside to outside.
The fireproof insulating layer 121 is made of synthetic mica tape, and the synthetic mica tape is wrapped on the outer surface of the conductor 11 to form the fireproof insulating layer 121. Synthetic mica tape fusing point 1375 ℃, and synthetic mica tape's electrical insulation line is strong, and the vacuum gassing is extremely low under the high temperature, enables the fire prevention cable that is high temperature resistant durable keep insulating under the conflagration condition.
The inner insulating layer 122 is made of polyether-ether-ketone materials, the polyether-ether-ketone has a high melting point of 334 ℃ and a high glass transition temperature of 143 ℃, the continuous use temperature can reach 260 ℃, and the working stability of the cable at high temperature can be improved by using the inner insulating layer 122 for manufacturing. And the polyether-ether-ketone has self-extinguishing property, and can prevent the cable from continuously burning.
The outer insulating layer 123 is formed by crosslinking polyolefin insulating materials through electron beam irradiation. The electron beam irradiation crosslinking is to use high-energy electron beams generated by an electron accelerator to bombard an insulating layer, break molecular chains to form macromolecular free radicals, and then recombine the macromolecular free radicals into crosslinking bonds, so that the original linear molecular structure is changed into a three-dimensional reticular molecular structure to form crosslinking. The polyolefin subjected to irradiation crosslinking has the characteristics of environmental protection, safety and long service life, so that the high-temperature-resistant and durable fireproof cable is more durable.
The inner fireproof layer 3 is coated on the periphery of the cable core 1, and the inner fireproof layer 3 is coated on the three cable cores 1 simultaneously. The inner fireproof layer 3 is made of ceramic materials. As one preferable scheme, the inner fireproof layer 3 is made of ceramic polyolefin material or ceramic silicon rubber material, the ceramic polyolefin material and the ceramic silicon rubber material are crusted at the high temperature of more than 350 ℃ to form a hard protective layer, the fireproof and heat-insulating performance is good, and the cable core 1 can be prevented from being burnt by flame in fire.
Filling layer 2 is located the space between inner cable core 1 and the cable core 1 to and the space between cable core 1 and the flame retardant coating, and as an preferred embodiment, filling layer 2 constitutes for fire-retardant type filling rope, and firm cable core 1 after fire-retardant type filling rope fills avoids in the cable use, makes cable core 1 shift influence cable normal use because of removing and the extrusion. In addition, when the cable is on fire, the flame retardant filling rope can prevent flame from spreading radially, and avoid burning the cable core 1.
The outer fireproof layer 4 is a copper sheath, the copper strip is welded into a copper pipe in an argon arc welding mode, and then the corrugated copper sheath is formed by rolling. As the melting point of copper can reach above 1300 ℃, the corrugated copper sheath is coated on the outer surface of the outer fireproof layer 4, flame can be further prevented from radially spreading from the outside of the cable to the cable core 1, and the normal work of the cable core 1 in high temperature or fire is ensured.
The outer sheath layer 5 is made of polyolefin material, specifically radiation cross-linked high-flame-retardant low-smoke halogen-free polyolefin sheath material. The low-smoke halogen-free polyolefin sheath material is bombarded by high-energy electron beams generated by an electron accelerator to realize electron beam irradiation crosslinking. The low-smoke halogen-free polyolefin material after irradiation crosslinking has high ignition point, avoids spontaneous combustion due to high temperature, does not release halogen-containing gas when the outer sheath layer 5 is aged or in case of fire, and can reduce the damage to the health of people in case of fire. In addition, the outer sheath layer 5 which is subjected to electron beam irradiation crosslinking has strong ageing resistance, and can protect the cable for a long time, so that the service life of the cable is prolonged.
To sum up, the inner insulating layer 122 is arranged in the cable, so that the cable is heat-resistant; the outer insulating layer 123 and the outer sheath layer 5 which are crosslinked through electron beam irradiation are arranged, so that the cable is durable; through setting up interior fire prevention insulating layer 121, flame retardant coating and outer flame retardant coating 4 to realize the cable fire prevention.
High temperature resistant durable fireproof cable's theory of operation be:
the utility model discloses an inner insulating layer 122 is made by polyether ether ketone material, and polyether ether ketone's the highest service temperature is 260 ℃ for the cable can be under high temperature environment normal use.
On the other hand, the utility model discloses an outer insulating layer 123 is made through the electron beam irradiation crosslinking by polyolefin insulation material, and the cooperation is by outer jacket layer 5 that the high fire-retardant low smoke and zero halogen polyolefin sheath material of irradiation crosslinking type was made, enables the ageing speed of cable and slows down greatly to improve the durability of cable remarkably, increase the life of cable, prevent that the cable is fast and the potential safety hazard that arouses than house ageing speed.
Furthermore, the utility model discloses be provided with fire prevention insulating layer 121, flame retardant coating 3 and outer flame retardant coating 4's fire resistive construction in the cooperation for the fire prevention flame retardant ability of cable is strong, and flame directly burns out the inside conducting structure of cable when 3 cooperation outer flame retardant coatings 4 of interior flame retardant coating can prevent to take place the conflagration, guarantees that the cable can normally transmit electricity when the conflagration.
Other constructions of the fire-resistant and durable cable according to the present embodiment are described in the prior art.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, so that any modification, equivalent change and modification made by the technical spirit of the present invention to the above embodiments do not depart from the technical solution of the present invention, and still fall within the scope of the technical solution of the present invention.
Claims (10)
1. The high-temperature-resistant and durable fireproof cable is characterized by comprising a cable core (1), a filling layer (2), an inner fireproof layer (3), an outer fireproof layer (4) and an outer sheath layer (5) which are sequentially arranged from inside to outside, wherein the filling layer (2) is positioned in a gap between the cable core (1) and the inner fireproof layer (3);
the cable core (1) comprises a conductor (11) and a composite insulating layer (12) coated on the periphery of the conductor (11), wherein the composite insulating layer (12) comprises a fireproof insulating layer (121), an inner insulating layer (122) and an outer insulating layer (123) which are sequentially arranged from inside to outside; the cable cores (1) are mutually twisted;
the inner insulating layer (122) is made of a polyether ether ketone material, and the outer insulating layer (123) is made of a polyolefin insulating material.
2. The high temperature resistant durable flameproof cable of claim 1, wherein:
the number of the cable cores (1) is 1-5.
3. The high temperature resistant durable flameproof cable of claim 1, wherein:
the fireproof insulating layer (121) is formed by wrapping a synthetic mica tape.
4. The high temperature resistant durable flameproof cable of claim 1, wherein:
the outer insulating layer (123) is made by electron beam irradiation crosslinking.
5. The high temperature resistant durable flameproof cable of claim 1, wherein:
the inner fireproof layer (3) is made of ceramic polyolefin material.
6. The high temperature resistant durable flameproof cable of claim 1, wherein:
the inner fireproof layer (3) is made of ceramic silicon rubber materials.
7. The high temperature resistant durable flameproof cable of claim 1, wherein:
the outer fireproof layer (4) is a copper sheath.
8. The high temperature resistant durable flameproof cable of claim 1, wherein:
the filling layer (2) is a flame-retardant filling rope.
9. The high temperature resistant durable flameproof cable of claim 1, wherein:
the outer jacket layer (5) is made of polyolefin.
10. The high temperature resistant durable flameproof cable of claim 1, wherein:
the outer sheath layer (5) is prepared by electron beam irradiation crosslinking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020971050.5U CN211828174U (en) | 2020-06-01 | 2020-06-01 | High-temperature-resistant and durable fireproof cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020971050.5U CN211828174U (en) | 2020-06-01 | 2020-06-01 | High-temperature-resistant and durable fireproof cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211828174U true CN211828174U (en) | 2020-10-30 |
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ID=73026412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020971050.5U Active CN211828174U (en) | 2020-06-01 | 2020-06-01 | High-temperature-resistant and durable fireproof cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211828174U (en) |
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2020
- 2020-06-01 CN CN202020971050.5U patent/CN211828174U/en active Active
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