CN209859669U - High temperature resistant fireproof cable - Google Patents
High temperature resistant fireproof cable Download PDFInfo
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- CN209859669U CN209859669U CN201921147750.6U CN201921147750U CN209859669U CN 209859669 U CN209859669 U CN 209859669U CN 201921147750 U CN201921147750 U CN 201921147750U CN 209859669 U CN209859669 U CN 209859669U
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Abstract
The utility model discloses a high temperature resistant fireproof cable relates to the technical field of special type fireproof cable, and it includes a plurality of cable cores and common cladding at the glass fiber weaving layer of a plurality of cable core periphery walls, and the crowded package of glass fiber weaving layer periphery wall has the PFA sheath, and the PFA sheath periphery wall still is provided with chain armor, and the cable core includes the nickel-plated copper stranded conductor at middle part and winds the package in proper order at the PTFE thin layer and the mica tape layer of nickel-plated copper conductor periphery wall. The utility model discloses a PFA sheath and chain armor set up the corrosion resistance that has improved high temperature resistant fireproof cable and gnaw the effect with anti-aging mouse, have effectively improved its life and application range.
Description
Technical Field
The utility model belongs to the technical field of the technique of special type fireproof cable and specifically relates to a high temperature resistant fireproof cable is related to.
Background
At present, with the development of social economy, the using amount of cables is rapidly increased, and the performance requirements of the cables are continuously improved, for example, the cables used in the fields of computers, communication, power generation, chemical engineering and petroleum and the like have requirements on the high temperature resistance, fire resistance, shielding insulating property, water resistance, oil resistance, environmental protection, energy conservation, utilization rate of heat dissipation and the like of the cables. When the cable works in a high-temperature environment, the insulation of an insulator in the cable is reduced, and the cable is easy to be broken down by electric arcs generated between adjacent cable cores to cause short circuit.
In order to solve the problems, the Chinese patent with the patent publication number of CN207097492U provides a flexible flame-retardant and fireproof cable which comprises a conductor core, wherein the conductor core is formed by sequentially wrapping a polytetrafluoroethylene film layer and a mica tape outside a conductor, four insulation cores are twisted into a cable core, a ceramic silicon rubber layer is extruded outside the cable core, a silicon rubber composite tape is wrapped outside the ceramic silicon rubber layer, and the silicon rubber composite tape is formed by two layers of ceramic fireproof and fireproof silicon rubber and high-temperature-resistant glass fiber cloth; the silicone rubber composite belt is reinforced and extruded with a high-flame-retardant low-smoke halogen-free environment-friendly polyolefin outer sheath. The utility model discloses a cable has improved fireproof cable's anti voltage breakdown performance well through wrapping the polytetrafluoroethylene thin layer around the conductor outward.
The above prior art solutions have the following drawbacks: the fireproof cable in the technical scheme has strong fireproof performance but weak durability, and cannot avoid mice from suffering and dealing with corrosion of acid and alkali environments.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a long service life's high temperature resistant fireproof cable.
The utility model aims at realizing through the following technical scheme:
the utility model provides a high temperature resistant fireproof cable, includes a plurality of cable cores and common cladding and is in a plurality of the glass fiber weaving layer of cable core periphery wall, the crowded package of glass fiber weaving layer periphery wall has the PFA sheath, PFA sheath periphery wall still is provided with chain armor, the cable core includes the nickel-plated copper stranded conductor at middle part and winds the package in proper order and be in the PTFE thin layer and the mica tape layer of nickel-plated copper stranded conductor periphery wall.
By adopting the technical scheme, the PTFE film layer and the mica tape layer provide excellent insulativity, voltage breakdown resistance and high-temperature fire resistance for the nickel-plated copper stranded wire, the softening point of the glass fiber reaches 500-750 ℃, the glass fiber braided layer is made to be wrapped on the outer sides of a plurality of cable cores so as to effectively prevent the plurality of cable cores from loosening when the high-temperature fire-resistant cable meets fire, PFA is a copolymer of a small amount of perfluoropropyl perfluorovinyl ether and polytetrafluoroethylene and has stronger insulativity and strong acid and strong alkali corrosion resistance, the high-temperature resistant fireproof cable is molten and has enhanced adhesion at 400-500 ℃, can play a good insulating role when being used as a PFA sheath to wrap the peripheral wall of a glass fiber braided layer, improves the strong acid and strong alkali corrosion resistance of the high-temperature resistant fireproof cable, and has longer service life in acid and alkali environments, meanwhile, the glass fiber braided layer can be shaped so as to prevent the glass fibers in the glass fiber braided layer from loosening to cause reduction of heat insulation performance; chain armor then can prevent that the mouse from gnawing and stings, can also provide certain tensile and compressive strength simultaneously, has effectively guaranteed its effective service life to high temperature resistant fireproof cable's life is more permanent.
Further setting the following steps: the periphery wall of the mica tape layer is further extruded with a flame-retardant layer.
By adopting the technical scheme, the flame-retardant layer shapes the mica tape layer and the PTFE film layer which are arranged in the winding bag, so that the mica tape layer and the PTFE film layer are prevented from being loosened when the high-temperature-resistant fireproof cable is pulled or twisted as much as possible, and the nickel-plated copper stranded wire is not uniformly covered; meanwhile, the flame-retardant layer can prevent excessive external heat from being transmitted to the mica tape layer to a certain degree, and the fireproof performance to a certain degree is achieved.
Further setting the following steps: and a foaming layer is also arranged between the peripheral wall of the cable core and the glass fiber braided layer.
Through adopting above-mentioned technical scheme, the gap of foaming layer between to a plurality of cable core periphery walls and glass fiber weaving layer is filled to provide the buffering for a plurality of cable cores simultaneously, make high temperature resistant fireproof cable be unlikely to direct action on nickel-plated copper stranded conductor when suffering the impact force of striking, cause mechanical damage to nickel-plated copper stranded conductor.
Further setting the following steps: and a reinforcing steel wire rope coaxial with the glass fiber braided layer is arranged in the middle of the foaming layer.
By adopting the technical scheme, the reinforced steel wire rope can improve the tensile property of the high-temperature-resistant fireproof cable, and mechanical damage caused by the fact that the nickel-plated copper stranded wire is pulled when a line is laid is avoided.
Further setting the following steps: a buffer layer is further arranged between the PFA sheath and the interlocking armor layer.
Through adopting above-mentioned technical scheme, high temperature resistant fireproof cable is when suffering the striking, and the chain armor is the indent even takes place to break, and the buffer layer can effectively prevent the acute angle fish tail PFA sheath of breaking on the chain armor, also can improve high temperature resistant fireproof cable's crushing resistance to a certain extent simultaneously.
Further setting the following steps: the cross section of the buffer layer is wavy.
Through adopting above-mentioned technical scheme, high temperature resistant fireproof cable suffers the striking back, and chain armor is sunken to the depressed part on the buffer layer by the position of striking, and can not be recovered by the bounce back top of buffer layer for the operation personnel can in time discover high temperature resistant fireproof cable's striking position and in time overhaul in order to get rid of the potential safety hazard.
Further setting the following steps: and a talcum powder layer is filled between the interlocking armor layer and the buffer layer.
By adopting the technical scheme, the talcum powder layer has certain self-lubricating property and fire resistance, the possibility of friction and bonding between the interlocking armor layer and the buffer layer is reduced, and the buffering and pressure-resisting performance of the buffer layer is ensured as far as possible.
Further setting the following steps: and the outer side of the interlocking armor layer is also coated with a flame-retardant sheath.
Through adopting above-mentioned technical scheme, fire-retardant sheath can prevent in the direct high temperature resistant fireproof cable of invading of naked light, can carry out certain protection to chain armor again to avoid its premature failure.
To sum up, the utility model discloses a beneficial technological effect does:
the PFA sheath provides strong acid and strong base corrosion resistance for the high-temperature-resistant fireproof cable, and the interlocking armor layer can prevent mice from biting and can provide certain tensile strength and compressive strength, so that the service life of the high-temperature-resistant fireproof cable is longer;
2. the foaming layer fills gaps between the outer peripheral walls of the plurality of cable cores and the glass fiber woven layer, provides buffering for the plurality of cable cores, and improves the compression resistance of the high-temperature-resistant fireproof cable;
3. the buffer layer of transversal personally submitting wavy can prevent effectively that chain armor from receiving the acute angle fish tail PFA sheath that breaks behind the striking, also can improve high temperature resistant fireproof cable's crushing resistance to a certain extent simultaneously, and high temperature resistant fireproof cable suffers the striking back, and chain armor is sunken to the depressed part on the buffer layer by the position of striking, and the operating personnel of being convenient for in time maintain and remove the potential safety hazard.
Drawings
Fig. 1 is a cross-sectional view of the overall structure of the present invention.
Reference numerals: 1. a cable core; 2. a glass fiber braid layer; 3. a PFA jacket; 4. interlocking armor layers; 5. plating a nickel-plated copper stranded wire; 6. a PTFE film; 7. mica tapes; 8. a flame retardant layer; 9. a foamed layer; 10. reinforcing the steel wire rope; 11. a buffer layer; 12. a talc powder layer; 13. a flame retardant jacket.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, for the utility model discloses a high temperature resistant fireproof cable, including four cable cores 1 and common cladding at the glass fiber weaving layer 2 of four cable core 1 periphery walls, four cable cores 1 each other each contactless and be equidistant circumference array distribution with cylindric glass fiber weaving layer 2 axis, the crowded package of 2 periphery walls of glass fiber weaving layer has PFA sheath 3, cable core 1 includes nickel-plated copper stranded conductor 5 at middle part and in proper order around package at the PTFE film 6 layer and the mica tape 7 layer of nickel-plated copper wire periphery wall, 7 periphery walls in mica tape are still crowded package and are had fire-retardant layer 8, fire-retardant layer 8 is made by fire-retardant silicon rubber.
6 layers of PTFE film and 7 layers of mica tape provide excellent insulating property for nickel-plated copper stranded conductor 5, voltage breakdown resistance and high temperature resistant fire behavior, fire-retardant layer 8 is then stereotyped 7 layers of mica tape and the 6 layers of PTFE film that set up around the package, in order to prevent as far as possible that high temperature resistant fireproof cable is being dragged or when twisting, the loose phenomenon takes place on 7 layers of mica tape and the 6 layers of PTFE film, lead to the cover inequality to nickel-plated copper stranded conductor 5, its self also possesses certain fire behavior simultaneously.
The softening point of the glass fiber reaches 500-; PFA is a copolymer of a small amount of perfluoropropyl perfluorovinyl ether and polytetrafluoroethylene, has stronger insulating property and strong acid and strong alkali corrosion resistance, is molten at the temperature of 400 ℃ plus 500 ℃ and has enhanced bonding property, and the PFA jacket 3 can play a good insulating role when being wrapped on the outer peripheral wall of the glass fiber braided layer 2, so that the strong acid and strong alkali corrosion resistance of the high-temperature resistant fireproof cable is improved, the cable has longer service life in acid and alkali environments, and simultaneously, the PFA can play a shaping role on the glass fiber braided layer 2 to prevent the glass fiber in the glass fiber braided layer 2 from being loosened to reduce the heat-insulating property.
The peripheral wall of 3 peripherys of PFA sheath wraps gradually chain armor 4 and fire-retardant sheath 13, and chain armor 4 is the chain armor of aluminum alloy, and fire-retardant sheath 13 is made by fire-retardant silicon rubber, still is provided with buffer layer 11 that the cross-section is wavy between PFA sheath 3 and the chain armor 4, and buffer layer 11 is made by rubber, and it has talcum bisque 12 to fill between chain armor 4 and the buffer layer 11.
The interlocking armor layer 4 can prevent rats from biting the high-temperature-resistant fireproof cable, meanwhile, when the high-temperature-resistant fireproof cable is impacted, the interlocking armor layer 4 is recessed inwards and even breaks, the buffer layer 11 can effectively prevent acute angles broken on the interlocking armor layer 4 from scratching the PFA sheath 3, buffer is provided for the impact suffered by the high-temperature-resistant fireproof cable, and the compression resistance of the high-temperature-resistant fireproof cable is improved; the impacted part of the chain armor layer 4 is sunken to the wavy sunken part of the buffer layer 11 and cannot be pushed back to recover by the rebounding force of the buffer layer 11, so that an operator can find the impacted part of the high-temperature-resistant fireproof cable in time and overhaul the impacted part in time to remove potential safety hazards, and the effective service life of the high-temperature-resistant fireproof cable is effectively ensured; the talcum powder layer 12 has certain self-lubricating property and fire resistance, the possibility of friction and bonding between the interlocking armor layer 4 and the buffer layer 11 can be reduced, the buffering and pressure-resistant performance of the buffer layer 11 can be guaranteed as far as possible, the flame-retardant sheath 13 can prevent open fire from directly invading into a high-temperature-resistant fireproof cable, and certain protection can be carried out on the interlocking armor layer 4, so that premature damage of the interlocking armor layer is avoided.
Still be provided with foaming layer 9 between 1 periphery wall of cable core and the glass fiber weaving layer 2, foaming layer 9 is formed for the EVA foaming, and foaming layer 9 middle part is provided with the enhancement wire rope 10 coaxial with glass fiber weaving layer 2.
The foaming layer 9 fills gaps between the outer peripheral walls of the four cable cores 1 and the glass fiber braided layer 2 and provides buffer for the four cable cores 1, so that impact force of the high-temperature-resistant fireproof cable when being impacted can not directly act on the nickel-plated copper stranded wire 5 to cause mechanical damage to the nickel-plated copper stranded wire 5; the reinforced steel wire rope 10 can improve the tensile property of the high-temperature-resistant fireproof cable and avoid mechanical damage caused by the fact that the nickel-plated copper stranded wire 5 is pulled when a line is laid.
The implementation principle and the beneficial effects of the embodiment are as follows:
6 layers of PTFE film and mica tape 7 layers provide excellent insulating nature for nickel-plated copper stranded conductor 5, voltage breakdown resistance and high temperature resistant fire behavior, 3 parcels of PFA sheath can play fine insulating effect when 2 periphery walls of glass fiber weaving layer, the strong acid and alkali corrosion resistance of high temperature resistant fireproof cable has been improved again, make it sour, homoenergetic has longer life in the alkaline environment, chain armor 4 then can prevent that the mouse from gnawing and stinging, can also provide certain tensile and compressive strength simultaneously, the effective service life of high temperature resistant fireproof cable has effectively been guaranteed, thereby high temperature resistant fireproof cable's life is more permanent.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (8)
1. The utility model provides a high temperature resistant fireproof cable which characterized in that: including a plurality of cable cores (1) and common cladding a plurality of the glass fiber weaving layer (2) of cable core (1) periphery wall, the crowded package of glass fiber weaving layer (2) periphery wall has PFA sheath (3), PFA sheath (3) periphery wall still is provided with chain armor (4), cable core (1) includes nickel-plated copper strand wires (5) at middle part and winds package in proper order and be in the PTFE film (6) layer and mica tape (7) layer of nickel-plated copper strand wires (5) periphery wall.
2. The high temperature resistant fireproof cable of claim 1, wherein: the periphery wall of the mica tape (7) layer is also extruded with a flame retardant layer (8).
3. The high temperature resistant fireproof cable of claim 1, wherein: and a foaming layer (9) is also arranged between the peripheral wall of the cable cores (1) and the glass fiber braided layer (2).
4. The high temperature resistant fireproof cable of claim 3, wherein: and a reinforcing steel wire rope (10) which is coaxial with the glass fiber braided layer (2) is arranged in the middle of the foaming layer (9).
5. The high temperature resistant fireproof cable of claim 1, wherein: a buffer layer (11) is further arranged between the PFA sheath (3) and the interlocking armor layer (4).
6. The high temperature resistant fireproof cable of claim 5, wherein: the cross section of the buffer layer (11) is wavy.
7. The high temperature resistant fireproof cable of claim 6, wherein: a talcum powder layer (12) is filled between the interlocking armor layer (4) and the buffer layer (11).
8. The high temperature resistant fireproof cable of claim 1, wherein: and a flame-retardant sheath (13) is further coated on the outer side of the interlocking armor layer (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921147750.6U CN209859669U (en) | 2019-07-20 | 2019-07-20 | High temperature resistant fireproof cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921147750.6U CN209859669U (en) | 2019-07-20 | 2019-07-20 | High temperature resistant fireproof cable |
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| Publication Number | Publication Date |
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| CN209859669U true CN209859669U (en) | 2019-12-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921147750.6U Active CN209859669U (en) | 2019-07-20 | 2019-07-20 | High temperature resistant fireproof cable |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112512145A (en) * | 2020-12-08 | 2021-03-16 | 芜湖市恒鑫电缆有限责任公司 | 24V self-temperature-limiting flame-retardant temperature-control heating cable special for automobile |
| CN114280744A (en) * | 2021-12-27 | 2022-04-05 | 远东电缆有限公司 | Optical fiber composite cable and preparation method and application thereof |
-
2019
- 2019-07-20 CN CN201921147750.6U patent/CN209859669U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112512145A (en) * | 2020-12-08 | 2021-03-16 | 芜湖市恒鑫电缆有限责任公司 | 24V self-temperature-limiting flame-retardant temperature-control heating cable special for automobile |
| CN112512145B (en) * | 2020-12-08 | 2022-09-16 | 山东鲁城电缆有限公司 | 24-volt self-temperature-limiting flame-retardant temperature-control heating cable special for automobile |
| CN114280744A (en) * | 2021-12-27 | 2022-04-05 | 远东电缆有限公司 | Optical fiber composite cable and preparation method and application thereof |
| CN114280744B (en) * | 2021-12-27 | 2024-02-20 | 远东电缆有限公司 | Optical fiber composite cable and preparation method and application thereof |
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