CN207883385U - A kind of tunnel fireproof cable - Google Patents
A kind of tunnel fireproof cable Download PDFInfo
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- CN207883385U CN207883385U CN201820203832.7U CN201820203832U CN207883385U CN 207883385 U CN207883385 U CN 207883385U CN 201820203832 U CN201820203832 U CN 201820203832U CN 207883385 U CN207883385 U CN 207883385U
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- tunnel
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Landscapes
- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
The utility model provides a kind of tunnel fireproof cable, include cable core successively from inside to outside, wrapping layer, inner sheath, waterproof layer, shielded layer, flame retardant coating and oversheath, cable core is four, respectively with wrapping layer inscribe, it is circumscribed per two adjacent cable cores in four cable cores, cavity is formed between four cable cores, reinforcer is embedded in cavity, each cable core is including core and the first insulating layer being wrapped in outside core, the inner wall of first insulating layer is provided at least one set of convex block, every group of convex block is two, it is symmetrically disposed on the inner wall of the first insulating layer, each convex block is provided with arc groove close to one end of core, core is embedded in arc groove, core and the first insulating layer are filled with petroleum jelly, first insulating layer is cross-linked polrvinyl chloride insulating layer, inner sheath is Ceramic silicon rubber inner sheath, oversheath is ethylene propylene diene rubber oversheath.The cable, which is suitable for tunnel not only, has preferable fire prevention, waterproof, corrosion-resistant, weather resistance, while also having preferable stability.
Description
Technical field
The utility model is related to field of cable technology, specifically, being related to a kind of tunnel fireproof cable.
Background technology
This industry of electric wire China be located at automobile industry after the second largest industry, the Service Efficiency of product variety and
The occupation rate of domestic market is 90% or more.In the range of All Around The World, the Chinese electric wire gross output value has been more than beautiful
State, it has also become the first big electric wire production control cable state in the world.
With industry sizes such as China electric power industry, data communication industry, urban track traffic industry, car industry and shipbuildings
Constantly expand, the demand to electric wire will also increase rapidly, the continuous raising of the requirement to electric wire.
The case where ventilation in tunnel and lighting conditions are all poor, and individual paragraphs will appear percolating water, while in tunnel
Cable is cluster laying, once fire occurs, is easy to prolong combustion, thus it is more demanding to tunnel cable, it not only to prevent fires, prevent
It is water, corrosion-resistant, should also have preferable stability and weatherability, tunnel cable is all not achieved in many cables in the prior art
Requirement.
Utility model content
For deficiency above-mentioned in the prior art, the utility model provides tunnel fireproof cable, which is suitable for tunnel
Road not only has preferable fire prevention, waterproof, corrosion-resistant, weather resistance, while also having preferable stability.
In order to achieve the above object, the solution of the utility model use is：
A kind of tunnel fireproof cable, from inside to outside successively include cable core, wrapping layer, inner sheath, waterproof layer, shielded layer,
Flame retardant coating and oversheath, cable core are four, circumscribed per two adjacent cable cores in four cable cores respectively with wrapping layer inscribe, four
Form cavity between a cable core, be embedded with reinforcer in cavity, each cable core include core and be wrapped in outside core first
The inner wall of insulating layer, the first insulating layer is provided at least one set of convex block, and every group of convex block is two, is symmetrically disposed on the first insulating layer
Inner wall, each convex block is provided with arc groove close to one end of core, and core is embedded in arc groove, and core and first is absolutely
Edge layer is filled with petroleum jelly, and the first insulating layer is cross-linked polrvinyl chloride insulating layer, and inner sheath is Ceramic silicon rubber inner sheath, outside
Sheath is ethylene propylene diene rubber oversheath.
Further, in the utility model preferred embodiment, core includes more conductors and is wrapped in outside more conductors
Second insulating layer.
Further, in the utility model preferred embodiment, second insulating layer is flame-proof polyvinyl chloride insulating layer.
Further, in the utility model preferred embodiment, wrapping layer is flame-proof glass fibre band wrapping layer.
Further, in the utility model preferred embodiment, reinforcer is FRP reinforcers.
Further, in the utility model preferred embodiment, waterproof layer is water blocking yarn waterproof layer.
Further, in the utility model preferred embodiment, shielded layer is woven by tinned copper wire.
Further, in the utility model preferred embodiment, flame retardant coating is mica tape flame retardant coating.
Further, in the utility model preferred embodiment, per adjacent two cable cores and wrapping layer in four cable cores
Between form a cavity, be embedded that there are one reinforcers in each cavity.
The advantageous effect of tunnel provided by the utility model fireproof cable is, cable core is four, respectively in wrapping layer
It cuts, circumscribed per adjacent two cable cores in four cable cores, and reinforcer is embedded between four cable cores, setting in this way
Cable core can effectively be fixed by setting, avoid carry, construction usage when, cable core it is mobile and influence the electric property of entire cable and
The stability in use of cable；Core is further fixed further through the convex block for the inner wall for being set to the first insulating layer simultaneously, can not only
Increase the use intensity of entire cable, while the stability in use of cable can also be further increased；Core is filled out with the first insulating layer
Filled with petroleum jelly, the waterproof effect of cable can be improved, while being additionally provided with waterproof layer, the use of waterproof layer and petroleum jelly can carry
The water resistance of high entire cable；Inner sheath is Ceramic silicon rubber inner sheath, and Ceramic silicon rubber inner sheath has splendid
The characteristics such as fire prevention, fire-retardant, low cigarette, nontoxic can improve electricity by being used cooperatively for Ceramic silicon rubber inner sheath and flame retardant coating
The fire protecting performance of cable, oversheath are ethylene propylene diene rubber oversheath, and the ageing-resistant performances such as resistance to ozone, heat-resisting, weather-proof are excellent, should
Cable, which is suitable for tunnel not only, has preferable fire prevention, waterproof, corrosion-resistant, weather resistance, while also having preferable stability
Energy.
Description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the structural schematic diagram for the tunnel fireproof cable that the utility model first embodiment provides；
Fig. 2 is the structural schematic diagram of the distribution for the cable core that the utility model first embodiment provides；
Fig. 3 is the cable core structure schematic diagram that the utility model first embodiment provides；
Fig. 4 is the structural schematic diagram for the first insulating layer that the utility model first embodiment provides；
Fig. 5 is the structural schematic diagram for the tunnel fireproof cable that the utility model second embodiment provides.
Icon：The tunnels 100- fireproof cable；200- cable cores；210- cavitys；220- reinforcers；230- cores；231- is led
Body；232- second insulating layers；The first insulating layers of 240-；241- convex blocks；242- arc grooves；250- petroleum jellys；300- wrapping layers；
400- inner sheaths；500- waterproof layers；600- shielded layers；700- flame retardant coatings；800- oversheaths.
Specific implementation mode
It is new below in conjunction with this practicality to keep the purpose, technical scheme and advantage of the utility model embodiment clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Usually here described in attached drawing and
The component of the utility model embodiment shown can be arranged and be designed with a variety of different configurations.Based in the utility model
Embodiment, the every other embodiment party that those of ordinary skill in the art are obtained without creative efforts
Formula shall fall within the protection scope of the present invention.
Therefore, the detailed description of the embodiments of the present invention to providing in the accompanying drawings is not intended to limit requirement below
The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model.Based in the utility model
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained without creative efforts, all
Belong to the range of the utility model protection.
It should be noted that：Similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent attached drawing in a attached drawing.
In the description of the present invention, it should be noted that the orientation or positional relationship of the instructions such as term "inner", "outside"
For be based on the orientation or positional relationship shown in the drawings or the utility model product using when the orientation or position usually put
Relationship is merely for convenience of describing the present invention and simplifying the description, and does not indicate or imply the indicated device or element must
There must be specific orientation, with specific azimuth configuration and operation, therefore should not be understood as limiting the present invention.
In the description of the present invention, it should also be noted that, unless otherwise clearly defined and limited, term " is set
Set ", " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection,
Or it is integrally connected；It can be mechanical connection, can also be electrical connection；It can be directly connected, intermediary can also be passed through
It is indirectly connected, can be the connection inside two elements.For the ordinary skill in the art, it can be managed with concrete condition
Solve the concrete meaning of above-mentioned term in the present invention.
First embodiment
Fig. 1 is please referred to, the utility model first embodiment provides a kind of tunnel fireproof cable 100, from inside to outside
Include cable core 200, wrapping layer 300, inner sheath 400, waterproof layer 500, shielded layer 600, flame retardant coating 700 and oversheath 800 successively.
In conjunction with Fig. 1 and Fig. 2, cable core 200 is four, respectively with 300 inscribe of wrapping layer, per adjacent in four cable cores 200
Two cable cores 200 are circumscribed, i.e. four 200 rectangular arrays of cable core difference, respectively with 300 inscribe of wrapping layer, adjacent to each other two
A cable core 200 is circumscribed, setting in this way being fixed on four cable cores 200 in wrapping layer 300, avoid carry,
When construction usage, cable core 200 moves and influences the electric property of entire cable and the stability in use of cable.
Wherein, cavity 210 is formed between four cable cores 200, is embedded with reinforcer 220 in cavity 210, in the present embodiment,
The cross section of reinforcer 220 is circle, and reinforcer 220 is circumscribed with four cable cores 200 respectively, and setting in this way can be into one
The fixed cable core 200 of step, further increases the electric property of cable and the stability in use of cable.
Preferably, reinforcer 220 is FRP reinforcers, wherein FRP (Fiberglass-ReinforcedPlastics) is i.e.
Fiberglass reinforced plastics, FRP are good anticorrosive materials, to the acid of big gas and water and general concentration, alkali, salt and a variety of oil
Class and solvent have preferable resistivity, use FRP reinforcers that can not only reinforce consolidating to cable core 200 in the present embodiment
It is fixed, moreover it is possible to which that the corrosion resistance for improving cable makes it be more suitable for tunnel use.
In conjunction with Fig. 1, Fig. 3 and Fig. 4, each cable core 200 includes core 230 and the first insulation being wrapped in outside core 230
Layer 240；The inner wall of first insulating layer 240 is provided at least one set of convex block 241, and every group of convex block 241 is two, is symmetrically disposed on the
The inner wall of one insulating layer 240, each convex block 241 are provided with arc groove 242 close to one end of core 230, and core 230 is embedded in
In arc groove 242, in order to further fix core 230, the use intensity of entire cable can not only be increased in this way, together
When can also further increase the stability in use of cable.Wherein, the cross section of core 230 is circle.
It should be noted that in the utility model, convex block 241 is provided with two groups, and the center line of two groups of convex blocks 241 mutually hangs down
Directly, i.e., in one group of convex block 241 line of centres of two convex blocks 241 and two convex blocks 241 in another group of convex block 241 the line of centres
It is mutually perpendicular to, in order to it is more effectively fixed, but not limited to this, convex block 241 can also be arranged 3 groups, 4 groups, 5 groups etc..
Wherein, the first insulating layer 240 is cross-linked polrvinyl chloride insulating layer, i.e., the first insulating layer 240 is by cross-linked polrvinyl chloride
Material is made.Cross-linked polrvinyl chloride is that insulation polyethylene molecule is made to be changed into main body network molecular structure by linearity molecular structure,
I.e. thermoplastic polyethylene is changed into heat cured crosslinked polyethylene, to greatly improve its heat resistance and mechanical performance, subtracts
The shrinkage for having lacked it makes its not re-melting of being heated later, and maintains excellent electric property, therefore, cross-linked polrvinyl chloride
Insulating layer can not only play good insulation effect, while also have good heat resistance and mechanical performance.
Core 230 and the first insulating layer 240 are filled with petroleum jelly 250, and petroleum jelly 250 is a kind of colloidal substance flexible,
Moisture-proof and insulating effect is mainly played, water enters inside cable after can preventing cable surface layer from rupturing, and improves the block-water performance of cable.
Meanwhile good waterproof and buffering can be played the role of after cable filling with it.
Core 230 includes more conductors 231 and the second insulating layer 232 being wrapped in outside more conductors 231, wherein second
Insulating layer 232 is flame-proof polyvinyl chloride insulating layer, i.e., second insulating layer 232 is flame-proof polyvinyl chloride insulating layer, i.e., the second insulation
Layer 232 is made of flame-proof polyvinyl chloride material, and flame-proof polyvinyl chloride is fire retardant treated soft PVC, chemical stability
It is very high, the hydrochloric acid of any concentration, the nitric acid and 20% caustic soda below of 90% sulfuric acid below, 50%-60% are resistant under room temperature
Solution also has preferable ageing-resistant performance, therefore prepares second insulating layer 230 using flame-proof polyvinyl chloride, not only makes the
Two insulating layers 220 have preferable flame retardant property, also make it have preferable chemical stability and resistance to ag(e)ing.
The utility model uses dielectric layers and carries out double hyer insulation, in order to improve the electrical isolation of entire cable
Property, improve its adaptability used in tunnel.
Preferably, in the present embodiment, conductor 231 selects oxygen-free copper, and it is also residual without any deoxidier that oxygen-free copper is free from oxygen
The fine copper for staying object as the purpose of conductor 231 is to increase the electric property of entire cable using oxygen-free copper.
Preferably, wrapping layer 300 is flame-proof glass fibre band wrapping layer, can play the effect of good fire retardant insulating.
Inner sheath 400 is Ceramic silicon rubber inner sheath, i.e. inner sheath 400 is made of Ceramic silicon rubber material, ceramics
SiClx rubber have it is splendid prevent fires, be fire-retardant, low cigarette, the characteristics such as nontoxic, extruding-out process is simple, and residue is after burning
Hard ceramic shell, hard shell is not molten in fire hazard environment and do not drip, and is applicable to any required fireproof place, is protecting
Firm protective effect is played during power transmission is unobstructed under card fire condition, using Ceramic silicon rubber inner sheath, can avoid
Because the cable in tunnel is cluster laying, generated once prolonging combustion there is a phenomenon where fire generation.
Waterproof layer 500 is water blocking yarn waterproof layer, wherein water blocking yarn water swelling can form gel rapidly, block cable water
The space in channel, to achieve the purpose that block water.In addition, water blocking yarn not oleaginous material, the time connected needed for preparing also can be big
To shorten, and without preparing wiper, solvent and cleaner；The quality of materials is very light simultaneously so that cable dead weight greatly subtracts
Gently, not only there is good waterproof effect using water blocking yarn waterproof layer, moreover it is possible to mitigate the dead weight of cable.
In the utility model, the double-deck waterproof is played the role of using petroleum jelly 250 and waterproof layer 500, improves cable
Waterproof effect.
Preferably, shielded layer 600 is woven by tinned copper wire, in order to which shielded signal prevents internal/external signal
Interference, wherein tinned copper wire can effectively prevent electric current radially to leak, and ensure that its is safe to use, while tinned copper wire has
Good electrical insulation capability, antioxygenic property, heat resistance and certain mechanical strength.
Preferably, flame retardant coating 700 is mica tape flame retardant coating, and mica tape is a kind of refractory insulating material, is had excellent resistance to
High-temperature behavior and flame resistance energy.
Oversheath 800 is ethylene propylene diene rubber oversheath, i.e. oversheath 800 is made of ethylene propylene diene rubber, it is therefore an objective to be
The weather resistance of the entire cable of increase, ethylene propylene diene rubber are the terpolymers of ethylene, propylene and non-conjugated diene hydrocarbon,
With performances such as excellent resistance to weather, resistance to ozone, heat-resisting, acid and alkali-resistance, water vapor resistances, while also there is excellent electrical insulation capability
And corona resistance.
In conclusion the cable core of the tunnel fireproof cable is four, respectively with wrapping layer inscribe, per phase in four cable cores
Two adjacent cable cores are circumscribed, and reinforcer is embedded between four cable cores, and setting in this way can be fixed effectively
Cable core is avoided in carrying, construction usage, and cable core is mobile and influences the use of the electric property of entire cable and cable and stablizes
Property；Core is further fixed further through the convex block for the inner wall for being set to the first insulating layer simultaneously, can not only increase entire cable
Use intensity, while the stability in use of cable can also be further increased；Core and the first insulating layer are filled with petroleum jelly, can carry
The waterproof effect of high cable, while it being additionally provided with waterproof layer, the use of waterproof layer and petroleum jelly can improve the anti-of entire cable
Aqueous energy；Inner sheath is Ceramic silicon rubber inner sheath, Ceramic silicon rubber inner sheath have it is splendid prevent fires, be fire-retardant, low cigarette,
The characteristics such as nontoxic can improve fireproofing of cable performance, outside by being used cooperatively for Ceramic silicon rubber inner sheath and flame retardant coating
Sheath is ethylene propylene diene rubber oversheath, and the ageing-resistant performances such as resistance to ozone, heat-resisting, weather-proof are excellent, which is suitable for tunnel
Not only there is preferable fire prevention, waterproof, corrosion-resistant, weather resistance, while also there is preferable stability.
Second embodiment
Fig. 5 is please referred to, Fig. 5 shows the tunnel fireproof cable 100 that the utility model second embodiment provides, with first
Unlike embodiment, per one cavity of formation between adjacent two cable cores 200 and wrapping layer 300 in four cable cores 200
210, it is embedded that there are one reinforcers 220 in each cavity 210.Purpose is to improve its stabilization to further fix cable core 200
Property.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (9)
1. a kind of tunnel fireproof cable, it is characterised in that：Include cable core, wrapping layer, inner sheath, waterproof successively from inside to outside
Layer, shielded layer, flame retardant coating and oversheath, the cable core are four, respectively with the wrapping layer inscribe, per adjacent in four cable cores
Two cable cores it is circumscribed, form cavity between four cable cores, reinforcer be embedded in the cavity, each cable
Core includes core and the first insulating layer for being wrapped in outside core, and the inner wall of first insulating layer is provided at least one set of convex
Block, every group of convex block is two, is symmetrically disposed on the inner wall of first insulating layer, and each convex block is close to the one of the core
End is provided with arc groove, and the core is embedded in the arc groove, and the core is filled with first insulating layer
Petroleum jelly, first insulating layer are cross-linked polrvinyl chloride insulating layer, and the inner sheath is Ceramic silicon rubber inner sheath, described
Oversheath is ethylene propylene diene rubber oversheath.
2. tunnel fireproof cable according to claim 1, it is characterised in that：The core includes more conductors and package
Second insulating layer outside more conductors.
3. tunnel fireproof cable according to claim 2, it is characterised in that：The second insulating layer is fire-retardant polychlorostyrene second
Alkene insulating layer.
4. tunnel fireproof cable according to claim 1, it is characterised in that：The wrapping layer is that flame-proof glass fibre band is wrapped
Layer.
5. tunnel fireproof cable according to claim 1, it is characterised in that：The reinforcer is FRP reinforcers.
6. tunnel fireproof cable according to claim 1, it is characterised in that：The waterproof layer is water blocking yarn waterproof layer.
7. tunnel fireproof cable according to claim 1, it is characterised in that：The shielded layer by tinned copper wire weave and
At.
8. tunnel fireproof cable according to claim 1, it is characterised in that：The flame retardant coating is mica tape flame retardant coating.
9. tunnel fireproof cable according to claim 1, it is characterised in that：In four cable cores often described in adjacent two
A cavity is formed between cable core and the wrapping layer, is embedded that there are one reinforcers in each cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820203832.7U CN207883385U (en) | 2018-02-05 | 2018-02-05 | A kind of tunnel fireproof cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820203832.7U CN207883385U (en) | 2018-02-05 | 2018-02-05 | A kind of tunnel fireproof cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207883385U true CN207883385U (en) | 2018-09-18 |
Family
ID=63510944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820203832.7U Expired - Fee Related CN207883385U (en) | 2018-02-05 | 2018-02-05 | A kind of tunnel fireproof cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207883385U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111540521A (en) * | 2020-05-12 | 2020-08-14 | 陈丽碧 | Anti-pressure anti-interference flame-retardant composite cable |
| CN112700917A (en) * | 2020-12-21 | 2021-04-23 | 欧耐特线缆集团有限公司 | Multi-core branch combined cable and use method thereof |
-
2018
- 2018-02-05 CN CN201820203832.7U patent/CN207883385U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111540521A (en) * | 2020-05-12 | 2020-08-14 | 陈丽碧 | Anti-pressure anti-interference flame-retardant composite cable |
| CN111540521B (en) * | 2020-05-12 | 2022-01-07 | 陕西西特电缆有限公司 | Anti-pressure anti-interference flame-retardant composite cable |
| CN112700917A (en) * | 2020-12-21 | 2021-04-23 | 欧耐特线缆集团有限公司 | Multi-core branch combined cable and use method thereof |
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Address after: 611743 No. 88 Qingma Road, South Area of Chengdu Modern Industrial Port, Pidu District, Chengdu City, Sichuan Province Patentee after: Sichuan Shuta Industrial Co.,Ltd. Address before: 611730 No. 88 Qingma Road, South Area of Chengdu Modern Industrial Port, Pixian County, Chengdu City, Sichuan Province Patentee before: SICHUAN SAFOWER INDUSTRIAL CO.,LTD. |
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Granted publication date: 20180918 |