CN209625890U - A kind of flame-retardant refractory flexible electric cable - Google Patents
A kind of flame-retardant refractory flexible electric cable Download PDFInfo
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- CN209625890U CN209625890U CN201920623201.5U CN201920623201U CN209625890U CN 209625890 U CN209625890 U CN 209625890U CN 201920623201 U CN201920623201 U CN 201920623201U CN 209625890 U CN209625890 U CN 209625890U
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Abstract
The utility model relates to technical field of electric wires and cables, more particularly, to a kind of flame-retardant refractory flexible electric cable, including cable conductor, the cable conductor includes several mutually twisted conductors, the side of several cable conductors is arranged in the connecting layer for reinforcing the adjacent conductor compactness, the outside of the connecting layer is enclosed with filled layer, the side of the connecting layer is recessed with multiple heat dissipation cavities being axially arranged along the conductor, and multiple heat dissipation cavities are circumferentially arranged at intervals on the outer wall of the connecting layer.The flame-retardant refractory flexible electric cable is filled through the air flow passage that diffusion calcination heat is formd after layer package by connecting layer multiple grooves and the second groove that radially annular opens up, reduces the transmission speed of heat, extends the fire-resistance time of cable.
Description
Technical field
The utility model relates to technical field of electric wires and cables, more particularly, to a kind of flame-retardant refractory flexible electric cable.
Background technique
Flame resistant cable refers to that cable is possible to be burned and cannot run, but can hinder in the case where fiery residence occurs
The only sprawling of the intensity of a fire, electric wire can be limited in burning in subrange just in case catching fire, and not generate sprawling to protect key
The functional safety of emergency system is normally run, and avoids bigger loss, and the method that flame resistant cable generally uses is
Halide and metal oxide containing halogen are added in sheath material, are fabulous from fire-retardant angle the method, but this
The halide contained in a little materials discharges a large amount of smog and hydrogen halide in burning, leads to low visibility when fire,
It is not easy to evacuating personnel and carrys out very big obstruction to fire hose.
Patent announcement number is that the Chinese patent of CN206672659 discloses one kind, including conductor, is successively coated on outside conductor
The conductor shield of side, the first insulating layer, second insulating layer, fire-retardant separation layer, and be wrapped on the outside of fire-retardant separation layer with this
Metal sheath layer and external sheath layer used using the synthetic mica tape of insulation and excellent fire retarding performance as the first insulating layer
The halogen-free flame retarding cross-linked polyethylene of excellent fireproof performance is as second insulating layer, low smoke and zero halogen and the flame-retardant for improving cable
Performance.
When above-mentioned technical proposal has the following deficiencies: the locally fired calcination of cable, multilayer cable insulating layer heat shrinkable
Consolidation is successively wrapped up afterwards, so that the heat in fire point is concentrated at the one of cable, thermal conduction effect is bad, the high temperature resistant of cable
Effect reduces, so that the time of personnel escape in fire, fire-fighting and rescue are reduced, therefore above scheme is urgently improved.
Utility model content
A kind of flame-retardant refractory flexible electric cable for good, heat-insulated time length that the purpose of the utility model is to provide resistance to temp effects.
The above-mentioned purpose of the utility model has the technical scheme that
A kind of flame-retardant refractory flexible electric cable, including cable conductor, the cable conductor include several mutually twisted conductors,
The side of several cable conductors is arranged in the connecting layer for reinforcing the adjacent conductor compactness, the connecting layer
Outside is enclosed with filled layer, and the side of the connecting layer is recessed with multiple heat dissipation cavities being axially arranged along the conductor, Duo Gesuo
Heat dissipation cavity is stated circumferentially to be arranged at intervals on the outer wall of the connecting layer.
By using above-mentioned technical proposal, after at the one of cable by calcination, edge at the heat of the generation center that fire is put certainly
The length direction of cable is spread, and air that the setting of air flow passage retains its inside reduces the speed of heat transfer,
Heat diffuses to fire along the direction of air flow passage and puts farther away place, burns to reduce fire point total amount of heat to core
It burns, improves the fire resistance of cable.
The utility model is further arranged to: being successively enclosed with temperature-resistant insulation layer outside the conductor and is extruded in described
Low smoke and zero halogen liner layer outside temperature-resistant insulation layer.
By using above-mentioned technical proposal, Halogen liner layer and the difference of halide and metal oxide are, when burning
The smog of release is less, and the less obstruction to escape from the fire scene to personnel of the toxic gas of release is reduced.
The utility model is further arranged to: at the center of the connecting layer and radially annular offers multiple skies
Chamber, the cable conductor are respectively positioned in the cavity.
By using above-mentioned technical proposal, the installation of connecting layer is mutually fastened by muti-piece sector electro-insulating rubber block, so as to
In the installation of inner conductor, the integral strength of cable is improved.
The utility model is further arranged to: the connecting layer includes the fan-shaped electro-insulating rubber of multiple mutual enclosings in a ring
Block, the two sides and end of the electro-insulating rubber block are provided with the half arc slot for being easily installed the cable conductor, the sky
Chamber is spliced and combined by the adjacent electro-insulating rubber block.
By using above-mentioned technical proposal, increase multiple heat dissipation cavities, in order to which the isolation of fire point heat reaches preferable effect
Fruit.
The utility model is further arranged to: being opened up at the electro-insulating rubber block extrados outer rim and is opened at fluted and center
Equipped with the second groove, the filled layer is polypropylene filled layer and the side for being wound in multiple electro-insulating rubber blocks.
By using above-mentioned technical proposal, gasket for packing is wrapped in the outside of connecting layer, and multiple electro-insulating rubber blocks wind consolidation,
And gasket for packing has certain toughness, the filiform twisted together after expansion, therefore the bent ability of stretch-proof of cable
It is good.
The utility model is further arranged to: the outside of the filled layer is enclosed with shielded layer, and the shielded layer is using plating
Tin copper wire is worked out, and establishment density is greater than %, and the outside of the shielded layer is enclosed with the armour for being same as improving cable inner pressure resistant power
Fill layer.
By using above-mentioned technical proposal, every piece of electro-insulating rubber block extrados offers heat dissipation cavity, reinforces heat insulation,
Reduce the influence to inside cable.
The utility model is further arranged to: the outside of the armor is enclosed with outer jacket, and the outer jacket is by glass
Fiber, mica tape are crosslinked, and the surface of the outer jacket is coated with expanding fire-proof paint layer.
By using above-mentioned technical proposal, the setting of shielded layer and armor strengthens the anti-interference and resistance to compression energy of cable
Power.
The utility model is further arranged to: the conductor by oxygen-free copper-wire or aluminum steel or aluminium alloy wire it is twisted after be compacted and
At.
By using above-mentioned technical proposal, the intensity of conductor itself is strong, will not be burnt easily disconnected.
In conclusion the advantageous effects of the utility model are as follows:
1. the utility model is filled through layer package by connecting layer multiple grooves and the second groove that radially annular opens up
The air flow passage for foring diffusion calcination heat afterwards, reduces the transmission speed of heat, extends the fire-resistance time of cable.
2. the utility model meets fire by the fireproof coating layer of external application and forms cotton like foam protective barrier, slow down the intensity of a fire
Sprawling on cable.
Detailed description of the invention
Fig. 1 is the schematic diagram of the section structure of the utility model；
Fig. 2 is structure enlargement diagram at A in Fig. 1.
In figure, 1, cable conductor；2, conductor；3, temperature-resistant insulation layer；4, Halogen liner layer；5, connecting layer；51, insulation rubber
Blob of viscose；52, cavity；53, half arc slot；54, groove；55, heat dissipation cavity；6, filled layer；7, shielded layer；8, armor；9, outer jacket.
Specific embodiment
The utility model is described in further detail below in conjunction with attached drawing.
As shown in Figure 1, being a kind of flame-retardant refractory flexible electric cable disclosed by the utility model, including multiply oxygen-free copper-wire or aluminum steel
Or aluminium alloy wire it is twisted after be compacted made of cable conductor 1, the outside of seven groups of cable conductors 1 is successively enclosed with high-temperature insulation
Layer 3, Halogen liner layer 4 and connecting layer 5, to constitute conductor 2, temperature-resistant insulation layer 3 is silicon rubber and is wrapped in the outer of conductor 2
The integral strength of cable is improved to reduce the gap between twisted core in side, and Halogen liner layer 4 uses LSOH anti-flaming polyene
Hydrocarbon material, difference while flame retardant effect is preferable with halide and metal oxide be, the smog that when burning discharges is less,
The less obstruction to escape from the fire scene to personnel of the toxic gas of release is reduced.
As shown in Fig. 2, connecting layer 5 includes six for reinforcing the electro-insulating rubber block 51 of 2 compactness of adjacent conductor, six absolutely
The mutually overlap joint enclosing of edge rubber block 51 is annular in shape, and the two sides of electro-insulating rubber block 51 offer suitable with 2 side grafting of conductor respectively
The half arc slot 53 matched is fixedly connected to a conductor 2 in adjacent two pieces of electro-insulating rubber blocks 51, and another conductor 2 is fixed on circle
At the center of ring, and elasticity is good for electro-insulating rubber block 51, so that seven conductors 2 are spaced from each other, reduces squeezing between conductor 2
Pressure touch is hit, and improves the overall flexibility of cable.
Fluted 54 are opened up in the two sides outer rim of 51 extrados of electro-insulating rubber block, when six pieces of electro-insulating rubber blocks 51 mutually support
Side is enclosed with filled layer 6 when connecing, and filled layer 6 is polypropylene filled layer, to be formed between connecting layer 5 and filling groove layer along rank
Six heat dissipation cavities 55 that layer 5 radially opens up are connect, heat dissipation cavity 55 forms six diffusion calcination heats along the axis direction of conductor 2
Air flow passage.At the one of cable after calcination, length direction of the heat of generation from the center of fire point along cable is spread,
The air retained in air flow passage reduces the speed of heat transfer, and heat is diffused to along the direction of air flow passage
Fire puts farther away place, to reduce calcination of the fire point total amount of heat to core, improves the fire resistance of cable, extends cable
The fire-resistance time, reduce damage of the fire to equipment, and race against time for personnel escape in fire.
The outside of filled layer 6 is enclosed with shielded layer 7, and shielded layer 7 is worked out using tinned copper wire, and establishment density is greater than
90%, the outside of shielded layer 7 is enclosed with armor 8, improves the anti-interference and compressive resistance ability inside cable, armor 8 it is outer
Portion is enclosed with outer jacket 9 and outer jacket 9 is crosslinked by glass fibre, mica tape, and the surface of outer jacket 9 is coated with expansion fire-proof
Dope layer, when cable surface meets fire, fireproof coating layer is immediately generated the cotton like froth bed of even compact, has significant fire prevention
Heat insulation, and there is preferable fire prevention moisture resistance, there is certain relaxation effect to the sprawling of fire.
It the working principle of the utility model and has the beneficial effect that
When the outside of cable is by fiery calcination, the fireproof coating layer of external application meets fire and forms cotton like foam protective barrier,
Slow down sprawling of the intensity of a fire on cable, connecting layer 5 multiple grooves 54 and the second groove that radially annular opens up are filled through the packet of layer 6
The air flow passage that six diffusion calcination heats are formed after wrapping up in, reduces the transmission speed of heat, extends the fire-resistance of cable
Time.
The embodiment of present embodiment is the preferred embodiment of the utility model, and not limitation is originally practical new according to this
The protection scope of type, therefore: the equivalence changes that all structures, shape, principle according to the utility model are done should all be covered by practical
Within novel protection scope.
Claims (8)
1. a kind of flame-retardant refractory flexible electric cable, including cable conductor (1), it is characterised in that: the cable conductor (1) includes several
Mutually twisted conductor (2), the side of several cable conductors (1), which is arranged at, reinforces the adjacent conductor (2) closely
Property connecting layer (5) in, the outside of the connecting layer (5) is enclosed with filled layer (6), and the side of the connecting layer (5) is recessed with
Multiple heat dissipation cavities (55) being axially arranged along the conductor (2), multiple heat dissipation cavities (55) are circumferentially arranged at intervals at described
On the outer wall of connecting layer (5).
2. a kind of flame-retardant refractory flexible electric cable according to claim 1, it is characterised in that: successively wrapped outside the conductor (2)
It is wrapped with temperature-resistant insulation layer (3) and is extruded in the external low smoke and zero halogen liner layer (4) of the temperature-resistant insulation layer (3).
3. a kind of flame-retardant refractory flexible electric cable according to claim 1, it is characterised in that: at the center of the connecting layer (5)
And radially annular offers a plurality of cavities (52), the cable conductor (1) is respectively positioned in the cavity (52).
4. a kind of flame-retardant refractory flexible electric cable according to claim 3, it is characterised in that: the connecting layer (5) includes multiple
Fan-shaped electro-insulating rubber block (51) in a ring is mutually enclosed, the two sides and end of the electro-insulating rubber block (51) are provided with and are used for
It is easily installed half arc slot (53) of the cable conductor (1), the cavity (52) is spliced by the adjacent electro-insulating rubber block (51)
It is composed.
5. a kind of flame-retardant refractory flexible electric cable according to claim 4, it is characterised in that: electro-insulating rubber block (51) outer arc
It is opened up at the outer rim of face and offers the second groove at fluted (54) and center, the filled layer (6) is polypropylene filled layer and twines
It is around in the side of multiple electro-insulating rubber blocks (51).
6. a kind of flame-retardant refractory flexible electric cable according to claim 1, it is characterised in that: the external packet of the filled layer (6)
It is wrapped with shielded layer (7), the shielded layer (7) is worked out using tinned copper wire, and establishment density is greater than 90%, the shielded layer (7)
Outside be enclosed be same as improve cable inner pressure resistant power armor (8).
7. a kind of flame-retardant refractory flexible electric cable according to claim 6, it is characterised in that: the external packet of the armor (8)
It is wrapped with outer jacket, the outer jacket is crosslinked by glass fibre, mica tape, and the surface of the outer jacket is coated with expansion fire-proof
Dope layer.
8. a kind of flame-retardant refractory flexible electric cable according to claim 1, it is characterised in that: the conductor (2) is by oxygen-free copper-wire
Or aluminum steel or aluminium alloy wire it is twisted after be compacted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920623201.5U CN209625890U (en) | 2019-04-30 | 2019-04-30 | A kind of flame-retardant refractory flexible electric cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920623201.5U CN209625890U (en) | 2019-04-30 | 2019-04-30 | A kind of flame-retardant refractory flexible electric cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209625890U true CN209625890U (en) | 2019-11-12 |
Family
ID=68459244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920623201.5U Expired - Fee Related CN209625890U (en) | 2019-04-30 | 2019-04-30 | A kind of flame-retardant refractory flexible electric cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209625890U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111540519A (en) * | 2020-04-30 | 2020-08-14 | 安徽电缆股份有限公司 | Cross-linked polyethylene insulated water-blocking power cable |
| WO2022165344A1 (en) * | 2021-01-29 | 2022-08-04 | Rscc Wire & Cable Llc | Non-fluid cooled electric vehicle fast-charge cable |
-
2019
- 2019-04-30 CN CN201920623201.5U patent/CN209625890U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111540519A (en) * | 2020-04-30 | 2020-08-14 | 安徽电缆股份有限公司 | Cross-linked polyethylene insulated water-blocking power cable |
| WO2022165344A1 (en) * | 2021-01-29 | 2022-08-04 | Rscc Wire & Cable Llc | Non-fluid cooled electric vehicle fast-charge cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200827 Address after: No.9 Bintang Road, Changsha Economic and Technological Development Zone (Huangxing Town), Changsha City, Hunan Province Patentee after: Hunan Nanyuan Bus Technology Co., Ltd Address before: No.12 Yousha Road, Xingou Town, Dongxihu District, Wuhan City, Hubei Province Patentee before: HUBEI NANYUAN CABLE TECHNOLOGY Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191112 Termination date: 20210430 |
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| CF01 | Termination of patent right due to non-payment of annual fee |