CN210865717U - Environment-friendly fireproof variable-frequency power cable - Google Patents
Environment-friendly fireproof variable-frequency power cable Download PDFInfo
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- CN210865717U CN210865717U CN201921724123.4U CN201921724123U CN210865717U CN 210865717 U CN210865717 U CN 210865717U CN 201921724123 U CN201921724123 U CN 201921724123U CN 210865717 U CN210865717 U CN 210865717U
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Abstract
The utility model discloses a fire-resistant fire prevention frequency conversion power cable of environment-friendly, fire-resistant fire prevention frequency conversion power cable of environment-friendly includes cable core, main insulation core and vice insulation core, the cable core includes that three main insulation core and three vice insulation core transposition form, three be equilateral triangle between the main insulation core and arrange, three be equilateral triangle between the vice insulation core and arrange, it has the filling layer to fill between cable core and the band layer, the cable core from the inside to the outside by conductor, flame retardant coating, insulating layer, filling layer, band layer, separate oxygen layer, first shielding layer, second shielding layer, constitute around covering, inner liner, armor and oversheath. The utility model discloses a heat resistance and mechanical properties improve greatly, ensure that the cable has excellent heat-resisting and mechanical properties.
Description
Technical Field
The utility model relates to a wire and cable technical field especially relates to a fire-resistant fire prevention frequency conversion power cable of environment-friendly.
Background
Considering the special working environment of the variable frequency cable, the working frequency adjusting range of the variable frequency cable is wide, so that the variable frequency cable has a waveform profile of a main frequency no matter the working frequency is high or low during working, and simultaneously contains the generation of a plurality of higher harmonics, and after the amplitude of multiple reflections is superposed, the voltage borne by the variable frequency cable can reach a plurality of times of the working voltage. Under the working condition, if the insulation safety coefficient of the frequency conversion cable is not high enough, the cable is easy to be punctured, so that a series of safety accidents are caused, and huge loss is caused. The traditional variable frequency power cable does not have the characteristics of high temperature resistance, flame retardance, fire resistance, fire prevention and the like, so the improvement is urgently needed.
SUMMERY OF THE UTILITY MODEL
In view of the above prior art's shortcoming, the utility model aims to provide a fire-resistant fire prevention frequency conversion power cable of environment-friendly for the frequency conversion power cable who solves among the prior art does not possess the problem of characteristics such as high temperature resistant, fire-retardant, fire-resistant, fire prevention.
For realizing above-mentioned purpose and other relevant mesh, the utility model provides a fire-resistant fire prevention frequency conversion power cable of environment-friendly, fire-resistant fire prevention frequency conversion power cable of environment-friendly includes cable core, main insulation core and vice insulation core, the cable core includes that three main insulation core and three vice insulation core transposition form, three be equilateral triangle between the main insulation core and arrange, three be equilateral triangle between the vice insulation core and arrange, it has the filling layer to fill between cable core and the band layer, the cable core is from the inside and outside by conductor, flame retardant coating, insulating layer, filling layer, band layer, separate oxygen layer, first shielding layer, second shielding layer, around band layer, armor and oversheath constitution.
In an embodiment of the present invention, the main insulated wire core and the auxiliary insulated wire core are formed by wrapping the conductor around the fire-resistant layer and then extruding the insulating layer.
In an embodiment of the present invention, the conductor is made of a second type of stranded copper conductor.
In an embodiment of the present invention, the fire-resistant layer is a synthetic fire-resistant mica tape overlapping wrapping, and the covering rate of the fire-resistant layer is not lower than 25%.
In an embodiment of the present invention, the insulating layer is made of a high-quality irradiation crosslinked polyethylene insulating material.
In an embodiment of the present invention, the filling layer is alkali-free glass fiber yarn.
The utility model discloses an in the embodiment, band layer, overlap around the covering for the fire-retardant area of one deck glass fiber and form around the package, band layer, the rate of taking the lid is not less than 30% around the covering.
In an embodiment of the present invention, the oxygen barrier layer is a ceramic refractory composite tape, and the oxygen index is above 38.
In an embodiment of the present invention, the first shielding layer is a copper strip overlapping wrapping with a drainage wire.
In an embodiment of the present invention, the second shielding layer is woven by copper wires, and the density of the second shielding layer is not lower than 85%.
As above, the utility model discloses a fire-resistant fire prevention variable frequency power cable of environment-friendly has following beneficial effect:
the utility model discloses a fire-resistant fire prevention frequency conversion power cable of environment-friendly includes the cable core, it has the filling layer to fill between cable core and the band layer, the cable core is from interior and by conductor, flame retardant coating, insulating layer, filling layer, band layer outward, separates oxygen layer, first shielding layer, second shielding layer, constitutes around covering, inner liner armor and oversheath. The insulating layer is made of irradiation cross-linked polyethylene at 150 ℃, and after the insulating layer is subjected to electron irradiation cross-linking, the heat resistance and the mechanical property are greatly improved, so that the cable has excellent heat resistance and mechanical property. Meanwhile, the service temperature reaches 150 ℃, compared with the common cable, the current-carrying capacity is obviously improved, the heat-resisting grade is high, and the service life is obviously prolonged.
The utility model discloses a flame retardant coating is synthetic mica tape, synthetic mica tape expansion coefficient is little, dielectric strength is big, the resistivity is high and dielectric constant is even, heat-resisting grade is high, can reach A level fire-resistant level.
The utility model discloses a filling layer adopts the fine yarn of alkali-free glass, is a very stable inorganic matter, and is nontoxic harmless, and heat-resisting temperature can reach 650 + sand 1000 ℃, and the section of the fine yarn of alkali-free glass is cylindrical, all has the space between every yarn after filling the stranding, forms the passageway, has fine radiating effect.
The utility model discloses a band layer is glass fiber flame retardant belt with around the covering, for inorganic fiber, possesses incombustibility, and heat resistance, chemical resistance are good, can melt down glassy globule under the high temperature flame.
The utility model discloses an oxygen barrier is the fire-resistant composite band of pottery, and the oxygen index can be burnt into ceramic form armor under 350 + 3000 flames or flameless condition more than 38, and the crusting performance is good, and fire prevention fire behavior is excellent, and is nontoxic, harmless, and the security level is high.
The utility model discloses a shielding layer adopts the copper strips to add drainage wire and copper wire to weave the composite shielding structural design, can effectively prevent electromagnetic interference, guarantees signal transmission's integrality, plays the guard action to the operation of circuit simultaneously, still plays certain anticorrosive, transition heat effect.
The utility model discloses an armor adopts the stainless steel wire of being not less than 0.2mm diameter to weave, when playing radial guard action to the cable, constitutes the magnetostatic shielding, and interference immunity is better, has improved the tensile strength of cable, is favorable to the range of application of extension cable.
The utility model discloses a material of inner liner and oversheath is ceramic halogen-free low smoke polyolefin material, can generate hard pottery form crust under flame firing or high temperature condition, and the crust does not melt, does not drip, can resist water and spray and mechanical shock, and no toxic gas is liberated, and has very good thermal-insulated fire insulation effect, can guarantee electric power and information control's unblocked under the conflagration condition, strives for the valuable time for personnel flee and fire rescue.
The utility model discloses a cable overall structure designs characteristics such as prominent anti-interference, high temperature resistant, fire-resistant, fire prevention, environmental protection, long service life, is the environment-friendly material with the material, improves the high fire-retardant characteristic and the reliability of cable on the whole, can ensure the safe operation of equipment under the conflagration environment, facilitates for the use occasion that has special requirement.
Drawings
Fig. 1 is a schematic structural diagram of an environment-friendly fire-resistant and fireproof frequency conversion power cable provided in an embodiment of the present application.
The element numbers are as follows:
1. conductor
2. Refractory layer
3. Insulating layer
4. Filling layer
5. Band layer
6. Oxygen barrier
7. First shielding layer
9. Second shielding layer
10. Wrapping layer
11. Inner liner
12. Armor layer
13. Outer sheath
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.
It should be noted that the drawings provided in the following embodiments are only for illustrating the basic concept of the present invention, and the components related to the present invention are only shown in the drawings rather than drawn according to the number, shape and size of the components in actual implementation, and the form, amount and ratio of the components in actual implementation may be changed at will, and the layout of the components may be more complicated.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an environment-friendly fire-resistant and fireproof frequency conversion power cable according to an embodiment of the present application. The utility model provides a fire-resistant fire prevention frequency conversion power cable of environment-friendly, fire-resistant fire prevention frequency conversion power cable of environment-friendly includes cable core, main insulation core and vice insulation core, the cable core includes that three main insulation core and three vice insulation core transposition form, three be equilateral triangle between the main insulation core and arrange, three be equilateral triangle between the vice insulation core and arrange, it has filling 4 to fill between cable core and the band layer 5, the cable core is from inside to outside by conductor 1, flame retardant coating 2, insulating layer 3, filling 4, band layer 5, separates oxygen layer 6, first shielding layer 7, second shielding layer 9, constitutes around covering 10, inner liner 11, armor 12 and oversheath 13.
Specifically, the main insulated wire core and the auxiliary insulated wire core are formed by wrapping a conductor 1 with a fire-resistant layer 2 and then extruding an insulating layer 3. The main insulated wire core and the auxiliary insulated wire core are formed by wrapping double-layer mica tapes outside the conductor 1 and then extruding the insulating layer 3, and a layer of glass fiber flame-retardant tape and a layer of ceramic fire-resistant composite tape are sequentially wrapped outside the cable core. And the space between the cable core and the belting layer 5 is filled with alkali-free glass fiber yarns, then copper strips are wrapped and shielded, a drainage wire and a copper wire are added for weaving and compounding shielding, and a wrapping layer 10, an inner lining layer 11, an armor layer 12 and an outer sheath 13 are sequentially arranged outside the shielding layer.
Specifically, the conductor 1 is made of a second type of stranded copper conductor. The fireproof layer 2 is formed by lapping a synthetic fireproof mica tape in an overlapping mode, and the covering rate of the fireproof layer 2 is not lower than 25%. The insulating layer 3 is made of high-quality irradiation cross-linked polyethylene insulating material. The filling layer 4 is alkali-free glass fiber yarn. The wrapping tape layer 5 and the wrapping layer 10 are formed by overlapping and wrapping a layer of glass fiber flame-retardant tape, and the covering rate of the wrapping tape layer 5 and the wrapping layer 10 is not lower than 30%. The oxygen barrier layer 6 adopts a ceramic refractory composite belt, and the oxygen index is more than 38. The first shielding layer 7 is formed by lapping and adding a drainage wire by a copper strip in an overlapping mode. The second shielding layer 9 is formed by weaving copper wires, and the density of the second shielding layer 9 is not lower than 85%. The armor layer 12 is formed by weaving stainless steel wires with the diameter not less than 0.2mm, and the density is not less than 90%. The lining layer 11 and the outer sheath 13 are made of ceramic halogen-free low-smoke polyolefin materials.
Referring to fig. 1, an environment-friendly fire-resistant and fireproof variable frequency power cable comprises an insulating wire core and a cable core, wherein the insulating wire core sequentially comprises a conductor 1, a fire-resistant layer 2 and an insulating layer 3 from inside to outside, three main insulating wires and three auxiliary insulating wire cores are twisted into the cable core, a wrapping layer 5, an oxygen isolation layer 6, a first shielding layer 7, a second shielding layer 9, a wrapping layer 10, an inner liner 11, an armor layer 12 and an outer jacket 13 are sequentially arranged outside the cable core, a gap between the cable core and the wrapping layer 5 is a filling layer 4, the conductor 1 is made of a second twisted copper conductor, the fire-resistant layer 2 is a synthetic fire-resistant mica tape overlapping wrapping bag, and the overlapping rate is not lower than 25%. The insulating layer 3 is made of high-quality irradiation cross-linked polyethylene insulating material, the filling layer 4 is alkali-free glass fiber yarn, the belting layer 5 and the wrapping layer 10 are formed by overlapping and wrapping a layer of glass fiber flame-retardant tape, the lapping rate is not lower than 30 percent, the oxygen-isolating layer 6 is made of ceramic fire-resistant composite tape, the oxygen index is more than 38, the first shielding layer 7 is made of copper tape overlapped and wrapped with a drainage wire, the second total shielding layer 9 is woven by copper wires, the density of the second shielding layer is not lower than 85 percent, the armor layer 12 is woven by stainless steel wires with the diameter not smaller than 0.2mm, the density of the armor layer is not lower than 90 percent, the inner lining layer 11 and the outer sheath 13 are made of ceramic halogen-free low-smoke polyolefin material, a hard ceramic-shaped hard shell can be generated under the conditions of flame burning or high temperature, the hard shell is not melted and not dropped, can resist water spraying and mechanical vibration, the smoothness of electric power and information control under the condition of fire can be ensured, and precious time is strived for escape and fire rescue of personnel.
The utility model provides a pair of fire-resistant fire prevention variable frequency power cable of environment-friendly has characteristics such as excellent interference immunity, high temperature resistant, fire-resistant, fire prevention, high flame retardance, low in production cost, environmental protection, nontoxic harmless, the long service life of cable.
In conclusion, the environment-friendly fire-resistant fire prevention frequency conversion power cable includes cable core, main insulation sinle silk and vice insulation sinle silk, the cable core includes that three main insulation sinle silks and three vice insulation sinle silks transposition form, three be equilateral triangle between the main insulation sinle silk and arrange, three be equilateral triangle between the vice insulation line and arrange, it has filling layer 4 to fill between cable core and the band layer 5, the cable core from inside to outside by conductor 1, flame retardant coating 2, insulating layer 3, filling layer 4, band layer 5, separate oxygen layer 6, first shielding layer 7, second shielding layer 9, constitute around covering 10, inner liner 11, armor 12 and oversheath 13. The insulating layer is made of irradiation cross-linked polyethylene at 150 ℃, and after the insulating layer is subjected to electron irradiation cross-linking, the heat resistance and the mechanical property are greatly improved, so that the cable has excellent heat resistance and mechanical property. Meanwhile, the service temperature reaches 150 ℃, compared with the common cable, the current-carrying capacity is obviously improved, the heat-resisting grade is high, and the service life is obviously prolonged.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides a fire-resistant fire prevention variable frequency power cable of environment-friendly which characterized in that: environment-friendly fire-resistant fire prevention frequency conversion power cable includes cable core, main insulation core and vice insulation core, the cable core includes that three main insulation core and three vice insulation core transposition form, three be equilateral triangle arrange between the main insulation core, three be equilateral triangle arrange between the vice insulation core, it has filling layer (4) to fill between cable core and band layer (5), the cable core is from inside to outside by conductor (1), flame retardant coating (2), insulating layer (3), filling layer (4), band layer (5), separate oxygen layer (6), first shielding layer (7), second shielding layer (9), constitute around band layer (10), inner liner (11), armor (12) and oversheath (13).
2. The environment-friendly fire-resistant fireproof frequency conversion power cable according to claim 1, characterized in that: the main insulated wire core and the auxiliary insulated wire core are formed by wrapping a conductor (1) with a fire-resistant layer (2) and then extruding an insulating layer (3).
3. The environment-friendly fire-resistant fireproof frequency conversion power cable according to claim 1, characterized in that: the conductor (1) is made of a second type of stranded copper conductor.
4. The environment-friendly fire-resistant fireproof frequency conversion power cable according to claim 1, characterized in that: the fireproof layer (2) is formed by lapping a synthetic fireproof mica tape in an overlapping mode, and the covering rate of the fireproof layer (2) is not lower than 25%.
5. The environment-friendly fire-resistant fireproof frequency conversion power cable according to claim 1, characterized in that: the insulating layer (3) is made of high-quality irradiation cross-linked polyethylene insulating material.
6. The environment-friendly fire-resistant fireproof frequency conversion power cable according to claim 1, characterized in that: the filling layer (4) is alkali-free glass fiber yarn.
7. The environment-friendly fire-resistant fireproof frequency conversion power cable according to claim 1, characterized in that: the wrapping tape layer (5) and the wrapping layer (10) are formed by overlapping and wrapping a layer of glass fiber flame-retardant tape, and the covering rate of the wrapping tape layer (5) and the wrapping layer (10) is not lower than 30%.
8. The environment-friendly fire-resistant fireproof frequency conversion power cable according to claim 1, characterized in that: the oxygen isolation layer (6) adopts a ceramic refractory composite belt, and the oxygen index is more than 38.
9. The environment-friendly fire-resistant fireproof frequency conversion power cable according to claim 1, characterized in that: the first shielding layer (7) is formed by lapping and adding a drainage wire by a copper strip in an overlapping mode.
10. The environment-friendly fire-resistant fireproof frequency conversion power cable according to claim 1, characterized in that: the second shielding layer (9) is formed by weaving copper wires, and the density of the second shielding layer (9) is not lower than 85%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921724123.4U CN210865717U (en) | 2019-10-14 | 2019-10-14 | Environment-friendly fireproof variable-frequency power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921724123.4U CN210865717U (en) | 2019-10-14 | 2019-10-14 | Environment-friendly fireproof variable-frequency power cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210865717U true CN210865717U (en) | 2020-06-26 |
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ID=71286730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921724123.4U Active CN210865717U (en) | 2019-10-14 | 2019-10-14 | Environment-friendly fireproof variable-frequency power cable |
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| Country | Link |
|---|---|
| CN (1) | CN210865717U (en) |
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2019
- 2019-10-14 CN CN201921724123.4U patent/CN210865717U/en active Active
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