CN208861718U - B1 grades of environmentally protective medium-pressure power cables of multistoried building - Google Patents
B1 grades of environmentally protective medium-pressure power cables of multistoried building Download PDFInfo
- Publication number
- CN208861718U CN208861718U CN201821733099.6U CN201821733099U CN208861718U CN 208861718 U CN208861718 U CN 208861718U CN 201821733099 U CN201821733099 U CN 201821733099U CN 208861718 U CN208861718 U CN 208861718U
- Authority
- CN
- China
- Prior art keywords
- layer
- grades
- pressure power
- environmentally protective
- power cables
- 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
Landscapes
- Insulated Conductors (AREA)
Abstract
The utility model discloses a kind of multistoried building B1 grades of environmentally protective medium-pressure power cables, including insulated wire cores, oxygen barrier layer, metal armor layers, oversheath, the insulated wire cores further comprise copper conductor and the conductor shield, insulating layer and insulation screen that are coated on outer surface of copper conductor from inside to outside, and the insulation screen outer surface is coated with a metal screen layer；One glass fibre band is wrapped in the first wrapping layer of composition outside metal screen layer, gasket for packing is provided between this first wrapping layer and metal screen layer, the oxygen barrier layer is coated on the first wrapping layer outer surface, the metal armor layers are surrounded with one second wrapping layer around oxygen barrier layer outer surface, the metal armor layers outer surface is wrapped in；The oversheath is extruded in the second wrapping layer outer surface, and several aramid fiber ropes are provided in this oversheath；The cable can satisfy B1 grades of flame-retardancy requirements, can slow down the sprawling of the intensity of a fire when fire occurs for building, try to gain time precious to one to personnel escape and fire-fighting and rescue.
Description
Technical field
The utility model relates to a kind of cable more particularly to a kind of multistoried building B1 grades of environmentally protective medium voltage electricity electricity
Cable.
Background technique
China requires constantly to be promoted for cable security performance at present, the especially burning of multistoried building wire and cable
Comprehensive performance needs to reach B1 grades in GB 31247-2014 of requirement, and super high-rise building field supply load itself is larger, warp
It powers frequently with midium voltage cable.
However, the midium voltage cable for Super High power supply is mostly flame-proof polyvinyl chloride sheath and low smoke and zero halogen currently on the market
Flame retardant cable, flame retardant property are only limitted to meet requirement fire-retardant in national standard GB/T 19666-2005, are unable to satisfy now new
Code requirement, these cables may release a large amount of heat when fire occurs, bring to personnel escape and fire-fighting and rescue
Very big difficulty, it may be said that the midium voltage cable that super high-rise building field meets B1 grades of performance requirements still falls within sky in the market at present
It is white.Therefore, a kind of satisfactory mechanical property how is developed, and can satisfy middle pressure in the multistoried buildings of B1 grades of flame-retardancy requirements
Power cable becomes the direction that those skilled in the art make great efforts.
Summary of the invention
The purpose of the utility model is to provide a kind of multistoried building B1 grades of environmentally protective medium-pressure power cables, the cables
Satisfactory mechanical property, and can satisfy B1 grades of flame-retardancy requirements, the sprawling of the intensity of a fire can be slowed down when fire occurs for building, give personnel
Escape and fire-fighting and rescue try to gain time precious to one.
In order to achieve the above objectives, the technical solution adopted in the utility model is: a kind of multistoried building B1 grades of green rings
Protect medium-pressure power cable, including insulated wire cores (1), oxygen barrier layer (5), metal armor layers (6), oversheath (8), the insulated wire cores
(1) further comprise copper conductor (11) and be coated on from inside to outside copper conductor (11) outer surface conductor shield (12), absolutely
Edge layer (13) and insulation screen (14), insulation screen (14) outer surface are coated with a metal screen layer (2)；
One glass fibre band is wrapped to form the first wrapping layer (3) in metal screen layer (2) outside, this first wrapping layer (3)
It is provided between metal screen layer (2) gasket for packing (4), the oxygen barrier layer (5) is coated on the first wrapping layer (3) outer surface, institute
Metal armor layers (6) are stated around oxygen barrier layer (5) outer surface is wrapped in, it is wrapped that metal armor layers (6) outer surface is surrounded with one second
Layer (7)；
The oversheath (8) is extruded in the second wrapping layer (7) outer surface, is provided with several aramid fibers in this oversheath (8)
Cordage (81).
Further improved scheme is as follows in above-mentioned technical proposal:
1. in above scheme, the copper conductor (11) is the annealing copper conductor of the 2nd kind of not metal cladding.
2. in above scheme, the insulating layer (13) is using insulating layer made from cross-linked polyethylene insulating material, Huo Zhesuo
Stating conductor shield (12) and insulation screen (14) is semiconductive shielding layer.
3. in above scheme, the metal screen layer (2) is by one layer of overlapping around each insulated wire cores (1) appearance
The shielded layer of the copper strips composition in face；It is highly preferred that the copper strips in this metal screen layer (2) is averaged, it is wide to be more than or equal to copper strips for overlap rate
The 15% of degree, copper strips minimum overlap rate are more than or equal to the 5% of copper strips width.
4. in above scheme, the gasket for packing (4) is low-smoke non-halogen flame-retardant gasket for packing or the oversheath (8) is low
Cigarette halogen-free polyolefin fire retardant jacket.
5. in above scheme, first wrapping layer (3) and the second wrapping layer (7) are glass fibre band wrapping layer.
6. in above scheme, the oxygen barrier layer (5) be low smoke and zero halogen oxygen barrier layer or the oxygen barrier layer (5) with a thickness of
2~4mm。
7. in above scheme, the metal armor layers (6) are the double-deck zinc-plated steel-tape armouring layer.
8. in above scheme, the number of the aramid fiber rope (81) is 4 ~ 8.
Due to the application of the above technical scheme, the utility model has the advantage that compared with prior art
1, the utility model multistoried building B1 grades of environmentally protective medium-pressure power cable has Halogen, low cigarette, fire-retardant etc.
Characteristic uses multiple flame retarding construction to design, and packing material uses low-smoke non-halogen flame-retardant gasket for packing, and two layers of wrapping layer is all made of resistance
Glass fibre band of good performance is fired, is also extruded with outside cable core using the oxygen barrier of the oxygen barrier material composition of high oxygen index (OI) low smoke and zero halogen
Layer, in addition the material of oversheath has also selected low-smoke halogen-free polyolefin flame-retardant sheath material, and cable obtained passes through GB 31247-
2014 and its defined test method be measured, meet B1 grades of burning behavior class of grade scale, be laid in Super High
When architectural power supply system, highest allows operating temperature high, and density flaming droplet is few when burning, and flue gas toxity is low, can be people
Member's escape and fire-fighting and rescue try to gain time precious to one.
2, the utility model multistoried building B1 grades of environmentally protective medium-pressure power cable is provided in oversheath several
Root aramid fiber rope, improves cable tensile strength, avoids winding, pulls the phenomenon of rupture occurred when occasion use, significantly
Improve cable service life and reliability；In addition, it is provided with the double-deck zinc-plated steel-tape armouring layer, the armour in oxygen barrier layer outer surface
Dress layer can prevent cable from bearing larger mechanical pressure to the damage inside cable, further improve the service life of cable；
Simultaneously on the one hand wrapped second wrapping layer also outside armor, the wrapping layer play a protective role to metal armor layers, prevent
Oversheath is extruded into armor, and the effect for preventing flame from longitudinally spreading when on the other hand also functioning to fire further increases
Fireproofing of cable performance.
Detailed description of the invention
Attached drawing 1 is B1 grades of the utility model multistoried building environmentally protective medium-pressure power cable structural schematic diagrams；
In the figures above: 1, insulated wire cores；11, copper conductor；12, conductor shield；13, insulating layer；14, insulation shielding
Layer；2, metal screen layer；3, the first wrapping layer；4, gasket for packing；5, oxygen barrier layer；6, metal armor layers；7, the second wrapping layer；8, outer
Sheath；81, aramid fiber rope.
Specific embodiment
Embodiment 1: a kind of multistoried building B1 grades of environmentally protective medium-pressure power cables, including five insulated wire cores 1, every
Oxygen layer 5, metal armor layers 6, oversheath 8, the insulated wire cores 1 further comprise copper conductor 11 and are coated on copper from inside to outside
Conductor shield 12, insulating layer 13 and the insulation screen 14 of 11 outer surface of conductor, 14 outer surface of the insulation screen cladding
There is a metal screen layer 2；
One glass fibre band is wrapped in the first wrapping layer 3 of composition, this first wrapping layer 3 and metal outside metal screen layer 2
Be provided with gasket for packing 4 between shielded layer 2, the oxygen barrier layer 5 is coated on 3 outer surface of the first wrapping layer, the metal armor layers 6 around
It is wrapped in 5 outer surface of oxygen barrier layer, 6 outer surface of metal armor layers is surrounded with one second wrapping layer 7；
The oversheath 8 is extruded in 7 outer surface of the second wrapping layer, and three aramid fiber ropes 81 are provided in this oversheath 8；
The copper conductor 11 is the annealing copper conductor of the 2nd kind of not metal cladding；
The insulating layer 13 is using insulating layer made from cross-linked polyethylene insulating material, the conductor shield 12 and insulation
Shielded layer 14 is semiconductive shielding layer；
The metal screen layer 2 is the shielding that the copper strips by one layer of overlapping around each 1 outer surface of insulated wire cores forms
Layer, the overlap rate that be averaged of the copper strips in this metal screen layer 2 are more than or equal to the 15% of copper strips width, copper strips minimum overlap rate greater than etc.
In the 5% of copper strips width；
The gasket for packing 4 is low-smoke non-halogen flame-retardant gasket for packing, and the oversheath 8 is low-smoke halogen-free polyolefin fire retardant jacket.
Embodiment 2: a kind of multistoried building B1 grades of environmentally protective medium-pressure power cables, including three insulated wire cores 1, every
Oxygen layer 5, metal armor layers 6, oversheath 8, the insulated wire cores 1 further comprise copper conductor 11 and are coated on copper from inside to outside
Conductor shield 12, insulating layer 13 and the insulation screen 14 of 11 outer surface of conductor, 14 outer surface of the insulation screen cladding
There is a metal screen layer 2；
One glass fibre band is wrapped in the first wrapping layer 3 of composition, this first wrapping layer 3 and metal outside metal screen layer 2
Be provided with gasket for packing 4 between shielded layer 2, the oxygen barrier layer 5 is coated on 3 outer surface of the first wrapping layer, the metal armor layers 6 around
It is wrapped in 5 outer surface of oxygen barrier layer, 6 outer surface of metal armor layers is surrounded with one second wrapping layer 7；
The oversheath 8 is extruded in 7 outer surface of the second wrapping layer, and four aramid fiber ropes 81 are provided in this oversheath 8；
First wrapping layer 3 and the second wrapping layer 7 are glass fibre band wrapping layer；
The oxygen barrier layer 5 be low smoke and zero halogen oxygen barrier layer, this oxygen barrier layer 5 with a thickness of 2 ~ 4mm；
The metal armor layers 6 are the double-deck zinc-plated steel-tape armouring layer；
The number of the aramid fiber rope 81 is 4 ~ 8.
When using above-mentioned multistoried building B1 grades of environmentally protective medium-pressure power cables, multiple flame retarding construction is used to set
Meter, cable obtained are measured by GB 31247-2014 and its defined test method, meet B1 grades of burning behavior class
Grade scale, when being laid in super high-rise building power supply system, highest allows operating temperature high, and burning is dripped when burning
Object is few, and flue gas toxity is low, can try to gain time precious to one for personnel escape and fire-fighting and rescue；Its good mechanical property, winding,
When pulling or bear the occasion use of ambient pressure, the damaged situation being less prone to, long service life, reliability
By force.
The above embodiments are only for explaining the technical ideas and features of the present invention, and its object is to allow be familiar with technique
Personage can understand the content of the utility model and implement accordingly, do not limit the protection scope of the present invention.
All equivalent change or modifications according to made by the spirit of the present invention essence, should all cover the protection scope of the utility model it
It is interior.
Claims (10)
1. a kind of multistoried building B1 grades of environmentally protective medium-pressure power cables, it is characterised in that: including insulated wire cores (1), every
Oxygen layer (5), metal armor layers (6), oversheath (8), the insulated wire cores (1) further comprise copper conductor (11) and by interior and
Conductor shield (12), insulating layer (13) and insulation screen (14) of the outer cladding in copper conductor (11) outer surface, the insulation
Shielded layer (14) outer surface is coated with a metal screen layer (2)；
One glass fibre band is wrapped to form the first wrapping layer (3) in metal screen layer (2) outside, this first wrapping layer (3) and gold
Belong to and being provided with gasket for packing (4) between shielded layer (2), the oxygen barrier layer (5) is coated on the first wrapping layer (3) outer surface, the gold
Belong to armor (6) and is surrounded with one second wrapping layer around oxygen barrier layer (5) outer surface, metal armor layers (6) outer surface is wrapped in
(7)；
The oversheath (8) is extruded in the second wrapping layer (7) outer surface, is provided with several aramid fibers in this oversheath (8)
It restricts (81).
2. multistoried building B1 grades of environmentally protective medium-pressure power cables according to claim 1, it is characterised in that: described
Copper conductor (11) is the annealing copper conductor of the 2nd kind of not metal cladding.
3. multistoried building B1 grades of environmentally protective medium-pressure power cables according to claim 1, it is characterised in that: described
Insulating layer (13) is using insulating layer made from cross-linked polyethylene insulating material or the conductor shield (12) and insulation shielding
Layer (14) is semiconductive shielding layer.
4. multistoried building B1 grades of environmentally protective medium-pressure power cables according to claim 1, it is characterised in that: described
Metal screen layer (2) is the shielded layer that the copper strips by one layer of overlapping around each insulated wire cores (1) outer surface forms.
5. multistoried building B1 grades of environmentally protective medium-pressure power cables according to claim 4, it is characterised in that: described
Copper strips in metal screen layer (2) be averaged overlap rate be more than or equal to copper strips width 15%, copper strips minimum overlap rate be more than or equal to copper
The 5% of bandwidth.
6. multistoried building B1 grades of environmentally protective medium-pressure power cables according to claim 1, it is characterised in that: described
Gasket for packing (4) is low-smoke non-halogen flame-retardant gasket for packing or the oversheath (8) is low-smoke halogen-free polyolefin fire retardant jacket.
7. multistoried building B1 grades of environmentally protective medium-pressure power cables according to claim 1, it is characterised in that: described
First wrapping layer (3) and the second wrapping layer (7) are glass fibre band wrapping layer.
8. multistoried building B1 grades of environmentally protective medium-pressure power cables according to claim 1, it is characterised in that: described
Oxygen barrier layer (5) is low smoke and zero halogen oxygen barrier layer or the oxygen barrier layer (5) with a thickness of 2 ~ 4mm.
9. multistoried building B1 grades of environmentally protective medium-pressure power cables according to claim 1, it is characterised in that: described
Metal armor layers (6) are the double-deck zinc-plated steel-tape armouring layer.
10. multistoried building B1 grades of environmentally protective medium-pressure power cables according to claim 1, it is characterised in that: institute
The number for stating aramid fiber rope (81) is 4 ~ 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821733099.6U CN208861718U (en) | 2018-10-25 | 2018-10-25 | B1 grades of environmentally protective medium-pressure power cables of multistoried building |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821733099.6U CN208861718U (en) | 2018-10-25 | 2018-10-25 | B1 grades of environmentally protective medium-pressure power cables of multistoried building |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208861718U true CN208861718U (en) | 2019-05-14 |
Family
ID=66421506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821733099.6U Active CN208861718U (en) | 2018-10-25 | 2018-10-25 | B1 grades of environmentally protective medium-pressure power cables of multistoried building |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208861718U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110634608A (en) * | 2019-10-15 | 2019-12-31 | 广州南洋电缆有限公司 | Fire-fighting flame-retardant B1-grade wire and cable and manufacturing method thereof |
| CN112635119A (en) * | 2021-01-15 | 2021-04-09 | 焦作铁路电缆有限责任公司 | B1-grade flame-retardant ultra-low-dropping electrified railway 27.5kV cable |
-
2018
- 2018-10-25 CN CN201821733099.6U patent/CN208861718U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110634608A (en) * | 2019-10-15 | 2019-12-31 | 广州南洋电缆有限公司 | Fire-fighting flame-retardant B1-grade wire and cable and manufacturing method thereof |
| CN112635119A (en) * | 2021-01-15 | 2021-04-09 | 焦作铁路电缆有限责任公司 | B1-grade flame-retardant ultra-low-dropping electrified railway 27.5kV cable |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN215007651U (en) | Mineral-filled flame-retardant fireproof isolated special cable for modern buildings | |
| CN211907047U (en) | Energy-saving environment-friendly high-flame-retardant high-fire-resistant cable | |
| CN208861718U (en) | B1 grades of environmentally protective medium-pressure power cables of multistoried building | |
| CN104810094A (en) | Crosslinked polyethylene insulating and refractory armored cable with rated voltage of 10 KV and manufacturing method thereof | |
| CN104795163A (en) | Ethylene propylene rubber insulated fireproof armored cable with nominal voltage of 10KV and production method of ethylene propylene rubber insulated fireproof armored cable | |
| CN205508427U (en) | Fire -retardant flexible cable is used to super fire -resistant communication power supply of environment -friendly | |
| CN208767070U (en) | Mineral insulated cable | |
| CN210722558U (en) | Medium-voltage fireproof cable for intelligent early warning communication | |
| CN202502825U (en) | Environment-friendly medium-voltage fireproof cable | |
| CN212782841U (en) | Flame-retardant B1-grade fireproof single-core power cable with corrugated metal sheath | |
| CN210443320U (en) | Flame-retardant heat-resistant cable | |
| CN211062486U (en) | Flexible mineral insulation fireproof cable | |
| CN209880216U (en) | High-strength moisture-proof fireproof power cable | |
| WO2021212589A1 (en) | Flame-retardant durable cable | |
| CN208538511U (en) | A kind of fireproof cable | |
| CN209591643U (en) | Fire-resisting cable is pressed in one kind | |
| CN105702362A (en) | Environment-friendly type aluminum alloy fire-resistant cable | |
| CN206921540U (en) | A kind of safety and environmental protection low smoke and zero halogen cotton covered wire | |
| CN220252899U (en) | Ultralow heat release fireproof cable | |
| CN211719295U (en) | Nonmetal armored flame-retardant fireproof bite-proof photoelectric composite cable | |
| CN212276880U (en) | Tensile fire-resistant non-armored cable | |
| CN204516446U (en) | The ethylene propylene rubber insulated fireproof armored cable of rated voltage 10kV | |
| CN204463906U (en) | A kind of flame retardant cable | |
| CN218497841U (en) | High-rise building lays perpendicularly with fire-retardant B1 level middling pressure fire resisting cable | |
| CN216212482U (en) | Low-voltage fire-resistant cable |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |