CN209691458U - A kind of low pressure fireproof power cable - Google Patents
A kind of low pressure fireproof power cable Download PDFInfo
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- CN209691458U CN209691458U CN201822145565.5U CN201822145565U CN209691458U CN 209691458 U CN209691458 U CN 209691458U CN 201822145565 U CN201822145565 U CN 201822145565U CN 209691458 U CN209691458 U CN 209691458U
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Abstract
The utility model relates to a kind of low pressure fireproof power cables, its conductor structure, the conductor structure is provided centrally with thermal pathways, hot-face insulation structure is provided on the outer surface of the conductor structure, the tangent setting of conductor structure described in more is simultaneously fixed by tightening structure, the outside for tightening structure is provided with metal sheath structure, the outer surface of the metal sheath structure is provided with oxygen barrier fireproof construction, is provided with interstitital texture between the hot-face insulation structure tightened outside structure and conductor structure；Total, the utility model has the advantages that reasonable in design, cable rapid heat dissipation at high operating temperatures.
Description
Technical field
The utility model belongs to technical field of electric wires and cables, and in particular to a kind of low pressure fireproof power cable.
Background technique
When fire occurs, common grade-A fire-resistant cable is run in 900 DEG C or so of flame generates a large amount of thermal energy, only
Disperse that speed is very slow by conductor and outer media conduction, the thermal energy that cannot be spread of aggregation shortens under the flame of cable
The safe handling time, moreover, cable is at a temperature of 900 DEG C or so, when the D.C. resistance of copper conductor is approximately normal working temperature
4.5 times, in the energized state the self-heating amount of cable will increase at double, ultimately cause the current-carrying capacity of cable sharply
Decline；Therefore it provides a kind of low pressure fireproof power cable of reasonable in design, cable rapid heat dissipation at high operating temperatures is very
It is necessary.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, and provide a kind of reasonable in design, cable
The low pressure fireproof power cable of rapid heat dissipation at high operating temperatures.
Purpose of the utility model is realized as follows: a kind of low pressure fireproof power cable, it includes conductor structure, described
Conductor structure be provided centrally with thermal pathways, be provided with hot-face insulation structure on the outer surface of the conductor structure, it is more
The tangent setting of conductor structure described in root is simultaneously fixed by tightening structure, and the outside for tightening structure is provided with metal shield
Layer structure, the outer surface of the metal sheath structure are provided with oxygen barrier fireproof construction, and described tightens structure and conductor structure
Interstitital texture is provided between external hot-face insulation structure.
The conductor structure as bilayer thickness is 1.0mm, width be copper pipe made of the interlocking of 8.0mm annealed copper band and
Corresponding size abnormity copper monofilament is closely wound outside copper pipe and constitutes.
The hot-face insulation structure is by the mica belt and mica tape with a thickness of 0.2mm outside conductor structure
The ceramic silastic-layer composition that outside extrudes with a thickness of 1.2mm.
The mica belt be by two-sided mica tape the outside of the conductor structure be closely overlapped it is wrapped form, and cloud
The Duplication of master tape is not less than 50%.
The ceramics silastic-layer is extruded in around the mica layer using cold-extruded mode, and extrusion temperature is controlled at 30 °
Within~40 °, then pass through 160 °~250 ° high temperature vulcanized formation.
The packing material is answering of working out of the glass fiber under fire resistant belt and soft state by ceramic
Close rope form filler.
It is described tighten structure be suppressed at high operating temperatures by fire-resisting ceramic silicone rubber and alkali-free glass fiber cloth and
At composite wrapping tape.
The metal sheath structure suppresses annular groove with pressure roller after argon arc welding welding by the copper strips longitudinal wrap of respective width,
1 ~ 2mm of groove depth guarantees the bending flexibility of whole cable.
The oxygen barrier fireproof construction is in polyolefin tree using ceramic low-smoke halogen-free polyolefin refractory material
It joined into plastics made of the function additives such as porcelain filling, high fire-retardance agent, plasticizer are kneaded in rouge, squeezed through 110 ~ 140 DEG C of temperature
Packet is in the outer surface of metal sheath structure.
The utility model has the beneficial effects that conductor structure of the utility model using interlocking copper pipe and special-shaped monofilament combination,
Under the conditions of copper product dosage is immovable, that is, it ensure that conductor softness, and heat quickly disperses at high temperature for cable
One channel is provided, while compared with the copper conductor of same cross-sectional, greatly increases the current-carrying capacity of cable；Interstitital texture
The compound rope form filler that the glass fiber under the fire resistant belt and soft state by ceramic is worked out, under flame or
It is hardened at hard ceramic shell rapidly when ambient enviroment reaches 600 DEG C, change shell and does not melt, keeps up, do not receive at high temperature
Contracting can very well be isolated every conductive track without short circuit accident；Structure is tightened by fire-resisting ceramic silicone rubber and alkali-free
Composite wrapping tape made of suppressing under the glass fabric condition of high temperature, band winding core tighten, and composite wrapping tape is hardened under flame
At stiff shell, certain protective role can be played to core, filling is using ceramic composite band between uniformly loading onto each core
In gap, guarantee the roundness of Integral cable core.
Detailed description of the invention
Fig. 1 is a kind of the schematic diagram of the section structure of low pressure fireproof power cable of the utility model.
In figure: 1, thermal pathways 2, conductor structure 3, hot-face insulation structure 4, interstitital texture 5, tighten structure
6, metal sheath structure 7, oxygen barrier fireproof construction.
Specific embodiment
The utility model is described further with reference to the accompanying drawing.
Embodiment 1
As shown in Figure 1, a kind of low pressure fireproof power cable, its conductor structure 2, the center setting of the conductor structure 2
There are thermal pathways 1, hot-face insulation structure 3, conductor structure 2 described in more are provided on the outer surface of the conductor structure 2
Tangent setting is simultaneously fixed by tightening structure 5, and the outside for tightening structure 5 is provided with metal sheath structure 6, described
The outer surface of metal sheath structure 6 is provided with oxygen barrier fireproof construction 7, the fire resisting tightened outside structure 5 and conductor structure 2
Interstitital texture 4 is provided between insulation system 3.
The conductor structure that the utility model is combined using interlocking copper pipe and special-shaped monofilament, in the immovable item of copper product dosage
Under part, that is, it ensure that conductor softness, and heat quickly disperses and provides one channel at high temperature for cable, while with
The copper conductor of same cross-sectional is compared, and the current-carrying capacity of cable is greatly increased；Total, there is the utility model structure design to close
Reason, cable at high operating temperatures rapid heat dissipation the advantages of.
Embodiment 2
As shown in Figure 1, a kind of low pressure fireproof power cable, its conductor structure 2, the center setting of the conductor structure 2
There are thermal pathways 1, hot-face insulation structure 3, conductor structure 2 described in more are provided on the outer surface of the conductor structure 2
Tangent setting is simultaneously fixed by tightening structure 5, and the outside for tightening structure 5 is provided with metal sheath structure 6, described
The outer surface of metal sheath structure 6 is provided with oxygen barrier fireproof construction 7, the fire resisting tightened outside structure 5 and conductor structure 2
Interstitital texture 4 is provided between insulation system 3；The conductor structure 2 by bilayer thickness is 1.0mm, width is 8.0mm annealing
Copper pipe made of the interlocking of soft copper band and corresponding size abnormity copper monofilament are closely wound outside copper pipe and constitute；The hot-face insulation structure
3 by extruding the ceramics with a thickness of 1.2mm outside the mica belt and mica tape with a thickness of 0.2mm outside conductor structure
Silastic-layer composition；The mica belt be by two-sided mica tape the outside of the conductor structure be closely overlapped it is wrapped and
At, and the Duplication of mica tape is not less than 50%；The ceramics silastic-layer is that the mica layer week is extruded in using cold-extruded mode
It encloses, extrusion temperature controls within 30 °~40 °, then passes through 160 °~250 ° high temperature vulcanized formation；The packing material 4
It is the compound rope form filler that the glass fiber under the fire resistant belt and soft state by ceramic is worked out；Described tightens
Structure 5 is composite wrapping tape made of being suppressed at high operating temperatures as fire-resisting ceramic silicone rubber and alkali-free glass fiber cloth；It is described
Metal sheath structure 6 by the copper strips longitudinal wrap of respective width, suppress annular groove with pressure roller after argon arc welding welding, 1 ~ 2mm of groove depth is protected
Demonstrate,prove the bending flexibility of whole cable；The oxygen barrier fireproof construction 7 is using ceramic low-smoke halogen-free polyolefin fire proofed wood
Material is to joined into plastics made of the function additives such as porcelain filling, high fire-retardance agent, plasticizer are kneaded in polyolefin resin,
The outer surface of metal sheath structure is extruded in through 110 ~ 140 DEG C of temperature.
The conductor structure that the utility model is combined using interlocking copper pipe and special-shaped monofilament, in the immovable item of copper product dosage
Under part, that is, it ensure that conductor softness, and heat quickly disperses and provides one channel at high temperature for cable, while with
The copper conductor of same cross-sectional is compared, and the current-carrying capacity of cable is greatly increased；Interstitital texture is by the fire resistant belt of ceramic and soft
The compound rope form filler that glass fiber under change state is worked out, it is fast under flame or when ambient enviroment reaches 600 DEG C
Speed is hardened to be changed shell and does not melt, keeps up, do not shrink at high temperature at hard ceramic shell, can be very well every live wire
Road is isolated without short circuit accident；Structure is tightened to be pushed by fire-resisting ceramic silicone rubber and the alkali-free glass fiber cloth condition of high temperature
Composite wrapping tape made of system, band winding core tighten, and composite wrapping tape forms stiff shell in flame lower plate, can play to core
Certain protective role, filling in uniformly loading onto each core gap, guarantee Integral cable core using ceramic composite band
Roundness.
The conductor structure of different size selects various sizes of copper pipe outer diameter and special-shaped copper filament size, and specific size is selected
It see the table below:
Claims (5)
1. a kind of low pressure fireproof power cable, it includes conductor structure, it is characterised in that: the center of the conductor structure is arranged
There are thermal pathways, hot-face insulation structure is provided on the outer surface of the conductor structure, conductor structure described in more is tangent
It is arranged and is fixed by tightening structure, the outside for tightening structure is provided with metal sheath structure, the metal shield
The outer surface of layer structure is provided with oxygen barrier fireproof construction, the hot-face insulation structure tightened outside structure and conductor structure it
Between be provided with interstitital texture.
2. a kind of low pressure fireproof power cable according to claim 1, it is characterised in that: the hot-face insulation structure by
The ceramic silicon with a thickness of 1.2mm is extruded outside the mica belt and mica tape with a thickness of 0.2mm outside conductor structure
Rubber layer composition.
3. a kind of low pressure fireproof power cable according to claim 2, it is characterised in that: the mica belt is by double
Face mica tape the outside of the conductor structure be closely overlapped it is wrapped form, and the Duplication of mica tape be not less than 50%.
4. a kind of low pressure fireproof power cable according to claim 1, it is characterised in that: the interstitital texture is used
Material be compound rope form filler that the glass fiber under fire resistant belt and soft state by ceramic is worked out.
5. a kind of low pressure fireproof power cable according to claim 1, it is characterised in that: the metal sheath structure by
The copper strips longitudinal wrap of respective width, suppresses annular groove with pressure roller after argon arc welding welding, and 1 ~ 2mm of groove depth guarantees the bending spirit of whole cable
Activity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822145565.5U CN209691458U (en) | 2018-12-20 | 2018-12-20 | A kind of low pressure fireproof power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822145565.5U CN209691458U (en) | 2018-12-20 | 2018-12-20 | A kind of low pressure fireproof power cable |
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| Publication Number | Publication Date |
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| CN209691458U true CN209691458U (en) | 2019-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201822145565.5U Active CN209691458U (en) | 2018-12-20 | 2018-12-20 | A kind of low pressure fireproof power cable |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109509582A (en) * | 2018-12-20 | 2019-03-22 | 河南乐山电缆有限公司 | A kind of low pressure fireproof power cable |
-
2018
- 2018-12-20 CN CN201822145565.5U patent/CN209691458U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109509582A (en) * | 2018-12-20 | 2019-03-22 | 河南乐山电缆有限公司 | A kind of low pressure fireproof power cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A low-voltage fire-resistant power cable Effective date of registration: 20220617 Granted publication date: 20191126 Pledgee: Zhumadian branch of China Construction Bank Corp. Pledgor: HENAN LESHAN CABLE CO.,LTD. Registration number: Y2022980008033 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230625 Granted publication date: 20191126 Pledgee: Zhumadian branch of China Construction Bank Corp. Pledgor: HENAN LESHAN CABLE CO.,LTD. Registration number: Y2022980008033 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A low-voltage fire-resistant power cable Effective date of registration: 20230628 Granted publication date: 20191126 Pledgee: Zhumadian branch of China Construction Bank Corp. Pledgor: HENAN LESHAN CABLE CO.,LTD. Registration number: Y2023980046325 |