CN214671942U - B1-grade flame-retardant flexible fireproof cable for subway - Google Patents
B1-grade flame-retardant flexible fireproof cable for subway Download PDFInfo
- Publication number
- CN214671942U CN214671942U CN202120339585.5U CN202120339585U CN214671942U CN 214671942 U CN214671942 U CN 214671942U CN 202120339585 U CN202120339585 U CN 202120339585U CN 214671942 U CN214671942 U CN 214671942U
- Authority
- CN
- China
- Prior art keywords
- fire
- glass fiber
- subway
- conductor
- fireproof cable
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model belongs to the technical field of the cable, especially, relate to a fire-retardant flexible fireproof cable of B1 level for subway, the fire-retardant flexible fireproof cable of B1 level for subway includes conductor, mineral insulation flame retardant coating, insulating layer, glass fiber tape around covering and restrictive coating, the conductor is outer from interior to exterior wrapped up in proper order has mineral insulation flame retardant coating and insulating layer, several the conductor outside from interior to exterior has wrapped up the glass fiber tape around covering and restrictive coating in proper order, conductor and glass fiber tape are packed with fire-resistant packing inner liner around covering between, the mineral insulation flame retardant coating is ceramic fire-resistant area, fire-resistant packing inner liner is ceramic fire-resistant fire prevention silicon rubber. The utility model provides a fire-retardant flexible fireproof cable of B1 level for subway with better fire behaviour, fire resistance, cold resistance and dampproofing and waterproof performance.
Description
Technical Field
The utility model belongs to the technical field of the cable, especially, relate to a fire-retardant flexible fireproof cable of B1 level for subway.
Background
The prior art and the defects are as follows:
along with the rapid and steady development of national subway key projects, particularly, people in subway stations are dense and congested, once a fire sign appears, the loss of national property is caused, and more seriously, the life safety of a plurality of people is threatened. Meanwhile, the cable has the advantages of low smoke, zero halogen, flame retardance, fire resistance, stable operation and international fire-resistant combustion performance, and only BTTZ mineral insulated cables meet the requirements at present.
The difficulty and significance for solving the technical problems are as follows:
therefore, based on the problems, the provision of the grade B1 flame-retardant flexible fireproof cable for the subway, which has better flame-retardant performance, fire-retardant performance, cold resistance and moisture-proof and waterproof performance, has important practical significance.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a fire-retardant flexible fireproof cable of B1 level for subway that has better fire behaviour, fire resistance, cold resistance and dampproofing and waterproof nature ability for solving the technical problem that exists among the well-known technique.
The utility model discloses a solve the technical scheme that technical problem that exists among the well-known technique took and be:
the utility model provides a fire-retardant flexible fireproof cable of B1 level for subway, fire-retardant flexible fireproof cable of B1 level for subway includes that conductor, mineral insulation flame retardant coating, insulating layer, glass fiber tape are around covering and restrictive coating, the outer from interior to exterior parcel in proper order of conductor has mineral insulation flame retardant coating and insulating layer, several the outside of conductor from interior to exterior parcel in proper order has glass fiber tape around covering and restrictive coating, conductor and glass fiber tape are packed with fire-resistant filling inner liner around between the covering, mineral insulation flame retardant coating is ceramic fire-resistant area, fire-resistant filling inner liner is ceramic fire-resistant fire prevention silicon rubber.
The utility model has the characteristics of high flame retardant property, higher fire resistance have simultaneously waterproof and moisture-proof performance's cable concurrently, this cable still has good physical mechanical properties, cold resistance (-40 ℃), electrical property, environmental protection safety, soft flexible, construction simple to operate is easy simultaneously.
The utility model discloses can also adopt following technical scheme:
in the above-mentioned fire-retardant flexible fireproof cable of grade B1 for subway, further, fire-retardant flexible fireproof cable of grade B1 for subway still includes the steel tape armor layer, the steel tape armor layer is located between glass fiber tape around covering and the restrictive coating.
The unarmored cable is free of this layer.
In the above-mentioned fire-retardant flexible fireproof cable of grade B1 for subway, further, the glass fiber tape is wrapped around the covering for alkali-free glass fiber tape, adopts double-deck alkali-free glass fiber tape to overlap and wrap, and the rate of overlapping is not less than 15%.
To sum up, the utility model has the advantages of it is following and positive effect:
1. the utility model discloses a pottery fire-resistant composite band and pottery fire-resistant silicon rubber inner sheath of fire prevention are as two fire-proof protection designs, make the cable can pass through BS6387 or BS8491 standard C, W, Z's fire-resistant test requirement, guarantee that the cable can last the power supply for 3 hours at least in 950 ℃'s combustion process.
2. The utility model discloses has good flame retardant property: by adopting high flame-retardant materials and by means of the optimized design of the structure (mica wrapping fire-resistant and water-resistant layers are not needed), the cable is ensured to meet various index requirements of B1-level flame retardant property required by subway design.
3. The utility model discloses waterproof and dampproofing and cold resistance have: the utility model discloses the material that adopts has good low temperature performance again when satisfying high flame retardant, and the design of fire prevention inner liner has dampproofing and waterproofing's effect again simultaneously, and here utility model can satisfy and reach under the condition of a plurality of performances such as waterproof, dampproofing, fire prevention, flame retardant property, and the technology is simpler, low in production cost, and the structure is more reasonable.
Drawings
The technical solution of the present invention will be described in further detail with reference to the accompanying drawings and examples, but it should be understood that these drawings are designed for illustrative purposes only and thus are not intended to limit the scope of the present invention. Furthermore, unless otherwise indicated, the drawings are intended to be illustrative of the structural configurations described herein and are not necessarily drawn to scale.
Fig. 1 is a schematic structural diagram of a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of a second embodiment of the present invention.
In the figure, 1, a conductor, 2, a mineral insulation fire-resistant layer, 3, an insulation layer, 4, a fire-resistant filling lining layer 5, a glass fiber tape wrapping layer, 6, a steel tape armoring layer, 7 and a sheath layer.
Detailed Description
The present invention will be described in detail with reference to fig. 1 to 2.
For further understanding of the contents, features and effects of the present invention, the following embodiments are exemplified and will be described in detail with reference to the accompanying drawings:
the first embodiment is as follows:
as shown in fig. 1, a fire-retardant flexible fireproof cable of B1 level is used to subway, fire-retardant flexible fireproof cable of B1 level is used to subway includes conductor, mineral insulation flame retardant coating, insulating layer, glass fiber tape around covering and restrictive coating, the conductor is outer from interior to exterior wrapped up in proper order has mineral insulation flame retardant coating and insulating layer, several the outside of conductor from interior to exterior wrapped up in proper order has glass fiber tape around covering and restrictive coating, conductor and glass fiber tape are packed with fire-resistant filling inner liner around between the covering, mineral insulation flame retardant coating is ceramic fire-resistant area, fire-resistant filling inner liner is ceramic fire-resistant fire prevention silicon rubber.
The utility model has the characteristics of high flame retardant property, higher fire resistance have simultaneously waterproof and moisture-proof performance's cable concurrently, this cable still has good physical mechanical properties, cold resistance (-40 ℃), electrical property, environmental protection safety, soft flexible, construction simple to operate is easy simultaneously.
The B1-grade flame-retardant flexible fireproof cable for the subway further comprises a steel tape armoring layer, wherein the steel tape armoring layer is located between the glass fiber tape wrapping layer and the sheath layer.
The unarmored cable is free of this layer.
The glass fiber tape wrapping layer is an alkali-free glass fiber tape wrapping layer, double layers of alkali-free glass fiber tapes are adopted for overlapping wrapping, and the covering rate is not less than 15%.
For example, the conductor is a soft copper wire conforming to GB/T3956-2008, the overall performance of the conductor conforms to the relevant regulations of the 1 st solid conductor, the 2 nd or 5 th twisted conductor in GB/T3956-2008, and the nominal section of the conductor is 1.5-1000 mm2。
The mineral insulating fire-resistant layer is made of a ceramic fire-resistant composite belt material, the insulating thickness is 0.45-1.3mm, the electrical property and the fire resistance meet the specifications of BS6387 and BS8491, and the material has excellent electrical property, fire resistance, physical and mechanical properties, halogen-free low-smoke performance and the like.
The insulating layer is made of a thermosetting material which meets the requirements of a cross-linked polyethylene material or has the same performance, the thickness is 0.7-2.8mm, and the performance meets the requirements of GB/T12706 or subway cable standards.
The mineral filling lining layer is a fireproof, waterproof and moistureproof layer, adopts a B1-grade flame-retardant ceramic fireproof and fireproof silicon rubber material, and is produced by adopting an extrusion die, so that the insulating gap is guaranteed to be filled with round, smooth and compact materials, the thickness of the insulating gap is 0.8-2.0mm, and the performance of the insulating gap meets the requirements of related product standards.
The alkali-free glass fiber tape wrapping layer is formed by overlapping and wrapping double layers of alkali-free glass fiber tapes, and the covering rate is not less than 15%.
The sheath layer is made of B1-grade flame-retardant low-smoke halogen-free polyolefin material, the thickness of the sheath is 1.2-2.5mm, the performance meets the relevant standard requirements, and the material has excellent physical and mechanical properties, oil resistance, acid and alkali resistance, excellent aging resistance and the like.
The material selection of the embodiment simultaneously achieves GB/T31247-2014B1 grade flame retardant and BS6387(BS8491) CZW fire resistance grade.
Example two:
the armor layer adopts a double-layer galvanized steel belt or a stainless steel belt (single core), and the non-armor type cable is not provided with the armor layer, and is determined according to the specific application place of the cable and the requirements of customers.
To sum up, the utility model provides a fire-retardant flexible fireproof cable of B1 level for subway that has better fire behaviour, fire resistance, cold resistance and dampproofing and waterproof performance.
The above embodiments are described in detail, but the above description is only for the preferred embodiments of the present invention, and should not be construed as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.
Claims (3)
1. The utility model provides a fire-retardant flexible fireproof cable of B1 level for subway which characterized in that: fire-retardant flexible fireproof cable of B1 level for subway includes conductor, mineral insulation flame retardant coating, insulating layer, glass fiber tape around covering and restrictive coating, the conductor is outer from interior to exterior in proper order the parcel have mineral insulation flame retardant coating and insulating layer, several the conductor outside from interior to exterior parcel in proper order has glass fiber tape around covering and restrictive coating, conductor and glass fiber tape are packed with fire-resistant filling inner liner around the package between the covering, mineral insulation flame retardant coating is ceramic fire-resistant area, fire-resistant filling inner liner is ceramic fire-resistant fire prevention silicon rubber.
2. The B1-grade flame-retardant flexible fireproof cable for subways according to claim 1, wherein: the B1-grade flame-retardant flexible fireproof cable for the subway further comprises a steel tape armoring layer, wherein the steel tape armoring layer is located between the glass fiber tape wrapping layer and the sheath layer.
3. The B1-grade flame-retardant flexible fireproof cable for subways according to claim 1, wherein: the glass fiber tape wrapping layer is an alkali-free glass fiber tape wrapping layer, double layers of alkali-free glass fiber tapes are adopted for overlapping wrapping, and the covering rate is not less than 15%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120339585.5U CN214671942U (en) | 2021-02-05 | 2021-02-05 | B1-grade flame-retardant flexible fireproof cable for subway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120339585.5U CN214671942U (en) | 2021-02-05 | 2021-02-05 | B1-grade flame-retardant flexible fireproof cable for subway |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214671942U true CN214671942U (en) | 2021-11-09 |
Family
ID=78446760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120339585.5U Active CN214671942U (en) | 2021-02-05 | 2021-02-05 | B1-grade flame-retardant flexible fireproof cable for subway |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214671942U (en) |
-
2021
- 2021-02-05 CN CN202120339585.5U patent/CN214671942U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203276947U (en) | Environmentally friendly low-smoke halogen-free flame-retardant fireproof medium-voltage power cable | |
| CN203644445U (en) | Flame-retardant composite fireproof cable | |
| CN103646712A (en) | Flame-retardant composite fireproof cable | |
| CN103177812A (en) | Environment-friendly medium-voltage fireproof cable | |
| CN214671968U (en) | Fire-resistant waterproof type medium-voltage crosslinked polyethylene insulated environment-friendly power cable | |
| CN211907054U (en) | Low-smoke halogen-free flame-retardant special computer instrument cable for maritime work equipment | |
| CN210443287U (en) | Silica gel insulation fireproof cable | |
| CN112908545A (en) | High-strength flexible fireproof and fire-resistant cable and manufacturing method thereof | |
| CN202134273U (en) | Flame-retardant high temperature-resistant intrinsically safe computer cable | |
| CN214671942U (en) | B1-grade flame-retardant flexible fireproof cable for subway | |
| CN217280178U (en) | Medium-voltage fire-resistant cable | |
| CN102394126A (en) | Low-smoke halogen-free high-flame-retardant fire-resistant environmentally-friendly cable | |
| CN204632372U (en) | A kind of fire-proof and explosion-proof cable | |
| CN214897764U (en) | High-strength flexible fireproof and fire-resistant cable | |
| CN205881558U (en) | Shock -resistant resistant spraying does not have steamed low fire -retardant middling pressure fire resisting cable of cigarette | |
| CN108922665A (en) | A kind of fire-retarded fiber composite cable | |
| CN205810400U (en) | LSOH anti-flaming fire-resistant ground shield photoelectric compound cable | |
| CN201435260Y (en) | Moisture barrier shielding fire-retardant communication cable for coal mines | |
| CN209691469U (en) | Fire-resisting cable is pressed in one kind | |
| CN209822364U (en) | Fireproof medium-voltage cable | |
| CN111540525A (en) | Heat-insulating bottle type B1-grade light fireproof cable | |
| CN216772884U (en) | Special anti-freezing overhead insulated cable for wind power generation | |
| CN216054005U (en) | Halogen-free low-smoke flame-retardant B1-grade fireproof waterproof variable frequency cable | |
| CN211087946U (en) | Flexible medium-voltage fireproof cable | |
| CN204792049U (en) | Novel dampproofing fireproof cable |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |