CN210777891U - Multi-core fireproof fire-resistant low-voltage cable - Google Patents
Multi-core fireproof fire-resistant low-voltage cable Download PDFInfo
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- CN210777891U CN210777891U CN201922003222.XU CN201922003222U CN210777891U CN 210777891 U CN210777891 U CN 210777891U CN 201922003222 U CN201922003222 U CN 201922003222U CN 210777891 U CN210777891 U CN 210777891U
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Abstract
The utility model relates to a fire-resistant low tension cable of multicore fire prevention has solved the not enough of prior art, and technical scheme is: the method is characterized in that: the cable comprises a plurality of cable cores, wherein all cable cores are arranged in an inner ceramic silicon rubber layer, a filling material is filled in a gap in the inner ceramic silicon rubber layer, the outer side of the inner ceramic silicon rubber layer is provided with a fireproof and fireproof ceramic polyolefin sheath, the outer side of the fireproof ceramic polyolefin sheath is provided with an outer ceramic silicon rubber layer, the outer side of the outer ceramic silicon rubber layer is provided with a fireproof and fireproof ceramic polyolefin oxygen-isolating layer, the outer side of the fireproof and fireproof ceramic polyolefin oxygen-isolating layer is provided with a steel belt armor, the outer side of the steel belt armor is provided with a glass fiber belt layer, the outer side of the glass fiber belt layer is provided with a low-smoke halogen-free flame-retardant high-oxygen-index polyolefin sheath, the cable cores respectively comprise conductors, the outer side of each conductor comprises a mica belt, the outer side of each mica belt is provided with an insulating.
Description
Technical Field
The utility model relates to a cable especially relates to a fire-resistant low tension cable of multicore fire prevention.
Background
The transmission of electricity is carried out by means of cables, which are now modern, and tall buildings are erected and the cables are applied to various locations of the building. The fire and water are in no way, and people can lose lives in the fire, and the conventional cable laid in a high-rise building can not work normally due to the fire when the fire breaks out, so that the novel structure cable of the fireproof cable is produced, and more precious time is provided for rescue work. Only the outer layer of the conductor is wrapped with the mica tape, the filling material and the protective layer, and the fireproof and fire-resistant material is selected, so that the fireproof and fire-resistant effect cannot be achieved. At present, the main structure of the fireproof and fire-resistant cable is that a mica tape is wrapped outside a conductor, and the cabling filling adopts a fireproof and fire-resistant material, an armor structure and a flame-retardant fireproof sheath.
For example: 201420528181.0 the application discloses an optical fiber composite rat and ant prevention environment-friendly flame-retardant fire-resistant low-voltage cable. The utility model provides a fire-retardant fire-resistant low tension cable of compound protection against rodents ant environmental protection of optic fibre, includes a plurality of copper conductor and sets up the insulating layer outside the copper conductor, the insulating layer is wrapped outward and is had protection band and oversheath, its characterized in that copper conductor and insulating layer between the cover be equipped with the flame retardant coating, protection band outside in proper order the cover be equipped with at the fire-retardant protective layer of oxygen separation and protection against rodents ant protective layer, the fire-retardant protective layer of oxygen separation and protection against rodents ant between have halogen-free high flame retardant band around wrapping, the oversheath constitute by the bilayer structure of polyolefin sheath and fire-retardant protection against rodents ant layer, polyolefin sheath and protection against rodents ant between wrap have fire-retardant band, a plurality of copper conductor between fill the non-hygroscopicity filler material, non-hygroscopicity filler material in still be equipped with one or many. Although the flame retardant properties are good, there is room for improvement.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a utility model aims at solving prior art and having the problem that fire behaviour has the room of improvement yet, provides a fire-resistant low tension cable of multicore fire prevention.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a multi-core fireproof fire-resistant low-voltage cable comprises a plurality of cable cores, wherein all the cable cores are arranged in an inner ceramic silicon rubber layer, filling materials are filled in gaps in the inner ceramic silicon rubber layer, the outer side of the inner ceramic silicon rubber layer is covered with a fireproof ceramic polyolefin sheath, the outer side of the fireproof ceramic polyolefin sheath is covered with an outer ceramic silicon rubber layer, the outer side of the outer ceramic silicon rubber layer is covered with a fireproof ceramic polyolefin oxygen-isolating layer, the outer side of the fireproof ceramic polyolefin oxygen-isolating layer is covered with a steel belt armor, the outer side of the steel belt armor is covered with a glass fiber belt layer, the outer side of the glass fiber belt layer is covered with a halogen-free low-smoke flame-retardant high-oxygen-index polyolefin sheath, the cable core comprises a conductor, a mica tape is arranged outside the conductor, an insulating layer is arranged outside the mica tape, and a high-temperature buffer tape is arranged outside the insulating layer.
The utility model discloses the manufacture process as follows: the conductor is wrapped with a mica tape. Silane is cross-linked and insulated by an extrusion coating two-step method, the insulating material adopts natural color insulation, and if the single wires in the cable core need color separation, only color master batch needs to be added into the cross-linking material. A layer of high-temperature buffer belt is wrapped outside the insulation layer; after the wrapping is finished, multiple cores are formed into a cable, an alkali-free glass fiber rope or a mineral paper rope is used for filling, and six layers of ceramic silicon rubber belts are used as a cable forming belt. And extruding and wrapping the fireproof ceramic polyolefin sheath material. Wrapping two layers of ceramic silicon rubber belts and extruding fireproof ceramic polyolefin oxygen insulation materials. The steel belt is armored, and a layer of glass fiber belt is wrapped at the same time. And an outer sheath is extruded and wrapped, and the outer sheath is made of halogen-free low-smoke flame-retardant high-oxygen-index polyolefin sheath material.
The utility model has the main structure that when a fire disaster is met, the ceramic silicon rubber belt wrapped outside the cable core mainly plays a role in protecting the inner insulation of the cable core and is an important defense line; meanwhile, a wrapped high-temperature buffer belt is arranged outside the insulation layer and is also used as an important 'defense line' for isolating temperature. The outermost layer of the low-smoke halogen-free flame-retardant high-oxygen index polyolefin sheath plays a certain flame-retardant role; the steel tape armor and the glass fiber tape play roles in inflaming retarding and fire stopping, and the steel tape armor is a main fire stopping layer structure; the ceramic polyolefin oxygen-insulating material mainly plays a role in oxygen insulation and flame retardance; the ceramic silicon rubber belt, the ceramic polyolefin sheath material and the glass fiber belt play a role in heat insulation and flame retardance; the alkali-free glass fiber rope mainly plays a role in fire resistance and heat insulation.
The utility model can meet the fire-resistant and fireproof requirements of low-voltage cables, and can work for more than three hours at the temperature of 950-1000 ℃ (reaching the A-level standard in GB/T12666.6), and can meet the fire-resistant performance regulation in GB/T19666-2005; the inner sheath layer and the oxygen-isolating layer in the cable structure are made of ceramic fireproof and fire-resistant polyolefin materials, so that the requirements of the cable on fire resistance and fire prevention can be met; the material has excellent heat insulation and oxygen insulation performance, and can reach the highest grade of C W Z of BS 6387. The structure adopts a multilayer protection structure, thereby ensuring that the insulation performance of the cable core is not changed and ensuring that the cable can normally run for more than three hours under the condition of meeting fire.
Preferably, the inner ceramic silicone rubber layer and the outer ceramic silicone rubber layer are formed by wrapping eight layers of ceramic silicone rubber belts, and the smooth surfaces and the friction surfaces of any two adjacent layers of ceramic silicone rubber belts are mutually abutted and laminated.
Preferably, the filling material is alkali-free glass fiber rope or mineral paper rope.
Preferably, the mica tape, the insulating layer and the high-temperature buffer tape are equal in thickness.
Preferably, the thicknesses of the inner ceramic silicon rubber layer, the fireproof fire-resistant ceramic polyolefin sheath, the outer ceramic silicon rubber layer, the fireproof fire-resistant ceramic polyolefin oxygen-isolating layer, the steel strip armor, the glass fiber tape layer and the halogen-free low-smoke flame-retardant high-oxygen-index polyolefin sheath are all equal.
The utility model discloses possess following substantive effect: the working time is more than three hours at the temperature of 950 ℃ to 1000 ℃ (reaching the A-grade standard in GB/T12666.6), and the fire resistance specification in GB/T19666-2005 can be met; the inner sheath layer and the oxygen-isolating layer in the cable structure are made of ceramic fireproof and fire-resistant polyolefin materials, so that the requirements of the cable on fire resistance and fire prevention can be met; the material has excellent heat insulation and oxygen insulation performance, and can reach the highest grade of C W Z of BS 6387. The structure adopts a multilayer protection structure, thereby ensuring that the insulation performance of the cable core is not changed and ensuring that the cable can normally run for more than three hours under the condition of meeting fire.
Drawings
Fig. 1 is a schematic view of an overall structure of the present invention;
in the figure: 1. conductor, 2, mica tape, 3, insulating layer, 4, high temperature buffer strip, 5, filling material, 6, inner ceramic silicon rubber layer, 7, fireproof ceramic polyolefin sheath, 8, outer ceramic silicon rubber layer, 9, fireproof ceramic polyolefin oxygen-isolating layer, 10, steel tape armor, 11, glass fiber tape layer, 12, halogen-free low-smoke flame-retardant high-oxygen index polyolefin sheath.
Detailed Description
The technical solution of the present invention is further specifically described below by way of specific embodiments and with reference to the accompanying drawings.
Example 1:
a multi-core fireproof fire-resistant low-voltage cable (see attached figure 1) comprises a plurality of cable cores, wherein all cable cores are arranged in an inner ceramic silicon rubber layer 6, a filling material 5 is filled in gaps in the inner ceramic silicon rubber layer, the outer side of the inner ceramic silicon rubber layer is provided with a fireproof fire-resistant ceramic polyolefin sheath 7, the outer side of the fireproof ceramic polyolefin sheath is provided with an outer ceramic silicon rubber layer 8, the outer side of the outer ceramic silicon rubber layer is provided with a fireproof fire-resistant ceramic polyolefin oxygen-isolating layer 9, the outer side of the fireproof fire-resistant ceramic polyolefin oxygen-isolating layer is provided with a steel strip armor 10, the outer side of the steel strip armor is provided with a glass fiber tape layer 11, the outer side of the glass fiber tape layer is provided with a halogen-free low-smoke flame-retardant high-oxygen-index polyolefin sheath 12, the cable cores are respectively provided with a conductor 1, the outer sides of the conductors are provided with mica, and the outer side of the insulating layer is wrapped with a high-temperature buffer belt 4. The inner ceramic silicon rubber layer and the outer ceramic silicon rubber layer are formed by wrapping eight layers of ceramic silicon rubber belts, and the smooth surfaces and the friction surfaces of any two adjacent layers of ceramic silicon rubber belts are mutually abutted and laminated. The filling material is alkali-free glass fiber rope or mineral paper rope. The mica tape, the insulating layer and the high-temperature buffer tape are equal in thickness. The thicknesses of the inner ceramic silicon rubber layer, the fireproof fire-resistant ceramic polyolefin sheath, the outer ceramic silicon rubber layer, the fireproof fire-resistant ceramic polyolefin oxygen isolation layer, the steel strip armor, the glass fiber belt layer and the halogen-free low-smoke flame-retardant high-oxygen-index polyolefin sheath are all equal.
The manufacturing process of the embodiment is as follows: the conductor is wrapped with a mica tape. Silane is cross-linked and insulated by an extrusion coating two-step method, the insulating material adopts natural color insulation, and if the single wires in the cable core need color separation, only color master batch needs to be added into the cross-linking material. A layer of high-temperature buffer belt is wrapped outside the insulation layer; after the wrapping is finished, multiple cores are formed into a cable, an alkali-free glass fiber rope or a mineral paper rope is used for filling, and six layers of ceramic silicon rubber belts are used as a cable forming belt. And extruding and wrapping the fireproof ceramic polyolefin sheath material. Wrapping two layers of ceramic silicon rubber belts and extruding fireproof ceramic polyolefin oxygen insulation materials. The steel belt is armored, and a layer of glass fiber belt is wrapped at the same time. And an outer sheath is extruded and wrapped, and the outer sheath is made of halogen-free low-smoke flame-retardant high-oxygen-index polyolefin sheath material.
The structure of the embodiment is mainly characterized in that when a fire disaster occurs, the ceramic silicon rubber belt wrapped outside the cable core mainly plays a role in protecting the inner insulation of the cable core and is an important defense line; meanwhile, a wrapped high-temperature buffer belt is arranged outside the insulation layer and is also used as an important 'defense line' for isolating temperature. The outermost layer of the low-smoke halogen-free flame-retardant high-oxygen index polyolefin sheath plays a certain flame-retardant role; the steel tape armor and the glass fiber tape play roles in inflaming retarding and fire stopping, and the steel tape armor is a main fire stopping layer structure; the ceramic polyolefin oxygen-insulating material mainly plays a role in oxygen insulation and flame retardance; the ceramic silicon rubber belt, the ceramic polyolefin sheath material and the glass fiber belt play a role in heat insulation and flame retardance; the alkali-free glass fiber rope mainly plays a role in fire resistance and heat insulation.
The embodiment can solve the fire-resistant and fireproof requirements of the low-voltage cable, and the low-voltage cable can work for more than three hours at the temperature of 950-1000 ℃ (reaching the A-level standard in GB/T12666.6), and can meet the fire-resistant performance regulation in GB/T19666-2005; the inner sheath layer and the oxygen-isolating layer in the cable structure are made of ceramic fireproof and fire-resistant polyolefin materials, so that the requirements of the cable on fire resistance and fire prevention can be met; the material has excellent heat insulation and oxygen insulation performance, and can reach the highest grade of C W Z of BS 6387. The structure adopts a multilayer protection structure, thereby ensuring that the insulation performance of the cable core is not changed and ensuring that the cable can normally run for more than three hours under the condition of meeting fire.
It should be understood that the present embodiment is only for illustrating the present invention and is not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes and modifications can be made by those skilled in the art after reading the teachings of the present invention, and such equivalents also fall within the scope of the invention as defined by the appended claims.
Claims (5)
1. The utility model provides a fire-resistant low tension cable of multicore fire prevention which characterized in that: the cable comprises a plurality of cable cores, wherein all cable cores are arranged in an inner ceramic silicon rubber layer, a filling material is filled in gaps in the inner ceramic silicon rubber layer, the outer side of the inner ceramic silicon rubber layer is covered with a fireproof and fireproof ceramic polyolefin sheath, the outer side of the fireproof and fireproof ceramic polyolefin sheath is covered with an outer ceramic silicon rubber layer, the outer side of the outer ceramic silicon rubber layer is covered with a fireproof and fireproof ceramic polyolefin oxygen-isolating layer, the outer side of the fireproof and fireproof ceramic polyolefin oxygen-isolating layer is covered with a steel belt armor, the outer side of the steel belt armor is covered with a glass fiber belt layer, the outer side of the glass fiber belt layer is covered with a low-smoke halogen-free flame-retardant high-oxygen-index polyolefin sheath, the cable cores are covered with conductors, the outer sides of the conductors are covered with mica belts, the outer sides of the mica belts are covered with insulating layers.
2. The multi-core fire-resistant low-voltage cable of claim 1, wherein: the inner ceramic silicon rubber layer and the outer ceramic silicon rubber layer are formed by wrapping eight layers of ceramic silicon rubber belts, and the smooth surfaces and the friction surfaces of any two adjacent layers of ceramic silicon rubber belts are mutually abutted and laminated.
3. The multi-core fire-resistant low-voltage cable of claim 1, wherein: the filling material is alkali-free glass fiber rope or mineral paper rope.
4. The multi-core fire-resistant low-voltage cable of claim 1, wherein: the mica tape, the insulating layer and the high-temperature buffer tape are equal in thickness.
5. The multi-core fire-resistant low-voltage cable of claim 1, wherein: the thicknesses of the inner ceramic silicon rubber layer, the fireproof fire-resistant ceramic polyolefin sheath, the outer ceramic silicon rubber layer, the fireproof fire-resistant ceramic polyolefin oxygen isolation layer, the steel strip armor, the glass fiber belt layer and the halogen-free low-smoke flame-retardant high-oxygen-index polyolefin sheath are all equal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922003222.XU CN210777891U (en) | 2019-11-19 | 2019-11-19 | Multi-core fireproof fire-resistant low-voltage cable |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922003222.XU CN210777891U (en) | 2019-11-19 | 2019-11-19 | Multi-core fireproof fire-resistant low-voltage cable |
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| CN210777891U true CN210777891U (en) | 2020-06-16 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113035428A (en) * | 2021-02-02 | 2021-06-25 | 安徽铁信光电科技有限公司 | Flame-retardant digital signal cable for rail transit and production process |
| CN114005590A (en) * | 2021-11-03 | 2022-02-01 | 安徽蒙特尔电缆集团有限公司 | Comprehensive protection B1-level cable for rail transit |
| CN114171247A (en) * | 2021-12-09 | 2022-03-11 | 安庆横电电缆有限公司 | Ceramic polyolefin insulation high-flame-retardant fireproof cable and preparation process thereof |
| CN114709022A (en) * | 2022-04-18 | 2022-07-05 | 山东大学 | Flame-retardant ceramizable silicone rubber sheath cable and preparation method thereof |
| CN114724760A (en) * | 2022-04-29 | 2022-07-08 | 西凤电缆有限公司 | 1300-DEG C-resistant environment-friendly mineral composite insulating flexible fireproof low-voltage power cable |
| CN115746570A (en) * | 2022-12-07 | 2023-03-07 | 华力通线缆股份有限公司 | Ceramic fire-resistant sheath material and medium-voltage fire-resistant cable |
-
2019
- 2019-11-19 CN CN201922003222.XU patent/CN210777891U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113035428A (en) * | 2021-02-02 | 2021-06-25 | 安徽铁信光电科技有限公司 | Flame-retardant digital signal cable for rail transit and production process |
| CN114005590A (en) * | 2021-11-03 | 2022-02-01 | 安徽蒙特尔电缆集团有限公司 | Comprehensive protection B1-level cable for rail transit |
| CN114171247A (en) * | 2021-12-09 | 2022-03-11 | 安庆横电电缆有限公司 | Ceramic polyolefin insulation high-flame-retardant fireproof cable and preparation process thereof |
| CN114709022A (en) * | 2022-04-18 | 2022-07-05 | 山东大学 | Flame-retardant ceramizable silicone rubber sheath cable and preparation method thereof |
| CN114724760A (en) * | 2022-04-29 | 2022-07-08 | 西凤电缆有限公司 | 1300-DEG C-resistant environment-friendly mineral composite insulating flexible fireproof low-voltage power cable |
| CN115746570A (en) * | 2022-12-07 | 2023-03-07 | 华力通线缆股份有限公司 | Ceramic fire-resistant sheath material and medium-voltage fire-resistant cable |
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