CN206564146U - A kind of ceramic fire-proof frequency conversion cable - Google Patents
A kind of ceramic fire-proof frequency conversion cable Download PDFInfo
- Publication number
- CN206564146U CN206564146U CN201720294142.2U CN201720294142U CN206564146U CN 206564146 U CN206564146 U CN 206564146U CN 201720294142 U CN201720294142 U CN 201720294142U CN 206564146 U CN206564146 U CN 206564146U
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- fire
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- ceramic
- frequency conversion
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Abstract
A kind of ceramic fire-proof frequency conversion cable, cable core is symmetrically twisted into by three power wire cores and three wire core uniform intervals, packed layer is provided with cable core, insulating barrier is coated with the outside of each power wire core and wire core, high fire-retardance nonwoven layer, inner liner, screen layer and sheath is enclosed with successively outside cable core.Symmetry is good, shielding is good, softness is good, and especially with respect to traditional fire-proof frequency conversion cable, when occurring fire, insulating barrier is changed into hard ceramic armor, good fire insulation, heat-insulated, gear fire effect can be played, with stable fire resistance；The dual shield that copper wire layer and copper strip layer are combined simultaneously, can suppress interference of the peripheral electromagnetic wave to cable well, can also shield interference of the internal electromagnetic induction to outside metal；Copper wire layer with copper strip layer dual shield there is larger cross section metal to accumulate, and but also as the passage of short circuit current flow, can play the protective effect of neutral core.
Description
Technical field：
The utility model is related to a kind of ceramic fire-proof frequency conversion cable.
Background technology：
Frequency-changing cable is generally used for frequency conversion system, and common fire-proof frequency conversion cable is typically wrapped one layer or two outside conductor
Stratus master tape extrudes polyvinyl chloride or polyethylene as insulating barrier, this refractory manner as fire resisting separation layer outside mica tape
Mica tape sinters duricrust protection conductor into and worked in flame when being by burning, because the mica after burning is easily broken
It is broken, therefore its fire resistance is extremely unstable；Meanwhile, Mica tape needs to carry out on special lapping equipment, processing technology
It is complex, cause production efficiency lowly and manufacturing cost is higher, and the fire safety for the frequency-changing cable produced
It cannot ensure.
Utility model content：
There is provided a kind of ceramic fire-proof frequency conversion cable, its structure in order to make up the deficiencies in the prior art for the utility model
Reasonable in design, symmetry is good, shielding is good, softness is good, and when occurring fire, insulating barrier is changed into hard ceramic armouring
Layer, can play good fire insulation, heat-insulated, gear fire effect, with stable fire resistance；While copper wire layer and copper strip layer knot
The dual shield of conjunction, can suppress interference of the peripheral electromagnetic wave to cable well, can also shield internal electromagnetic induction external
The interference of portion's metal；Copper wire layer with copper strip layer dual shield there is larger cross section metal to accumulate, but also as short circuit current flow
Passage, the protective effect of neutral core can be played, problems of the prior art are efficiently solved.
The utility model is to solve the technical scheme that is used of above-mentioned technical problem：
A kind of ceramic fire-proof frequency conversion cable, by three power wire cores and three symmetrical twisted synthesizing cables of wire core uniform intervals
Core, packed layer is provided with cable core, insulating barrier is coated with the outside of each power wire core and wire core, is wrapped successively outside cable core
It is wrapped with high fire-retardance nonwoven layer, inner liner, screen layer and sheath.
The screen layer is made up of copper wire layer parcel copper strip layer, and the copper wire layer is entwined for copper wire, the copper strip layer
Formed for copper strips is wrapped.
The packed layer is glass cord.
The insulating barrier is ceramic low smoke halogen-free fire retardant fire resistant polyolefin.
The inner liner and sheath are ceramic low smoke halogen-free fire retardant fire resistant polyolefin.
The utility model uses such scheme, its reasonable in design, and symmetry is good, shielding is good, softness is good, especially
It is relative to traditional fire-proof frequency conversion cable, and the utility model has used ceramic fire resistant flame retardant polyolefine material as insulation
Layer, when occurring fire, insulating barrier is changed into hard ceramic armor, can play good fire insulation, heat-insulated, gear fire effect
Really, with stable fire resistance；The dual shield that copper wire layer and copper strip layer are combined simultaneously, can suppress peripheral electromagnetism well
Interference of the ripple to cable, can also shield interference of the internal electromagnetic induction to outside metal；Copper wire layer is dual with copper strip layer
Shielding is accumulated with larger cross section metal, but also as the passage of short circuit current flow, can play the protective effect of neutral core.
Brief description of the drawings：
Fig. 1 is structural representation of the present utility model.
In figure, 1, power wire core, 2, wire core, 3, packed layer, 4, insulating barrier, 5, high fire-retardance nonwoven layer, 6, inner liner,
7th, copper strip layer, 8, copper wire layer, 9, sheath.
Embodiment：
For the technical characterstic for illustrating this programme can be understood, below by embodiment, and its accompanying drawing is combined, to this reality
It is described in detail with new.
As shown in figure 1, a kind of ceramic fire-proof frequency conversion cable, by three power wire cores 1 and three uniform intervals of wire core 2
Cable core symmetrically is twisted into, packed layer 3 is provided with cable core, insulating barrier is coated with each power wire core 1 and the outside of wire core 2
4, it is enclosed with high fire-retardance nonwoven layer 5, inner liner 6, screen layer and sheath 9 successively outside cable core.
The screen layer wraps up copper strip layer 7 by copper wire layer 8 and constituted, and the copper wire layer 8 is entwined for copper wire, the copper strips
Layer 7 forms for copper strips is wrapped.The dual shield that copper wire layer 8 and copper strip layer 7 are combined, can suppress peripheral electromagnetic wave well to electricity
The interference of cable, can also shield interference of the internal electromagnetic induction to outside metal；Copper wire layer 8 and the dual shield of copper strip layer 7
Accumulated with larger cross section metal, but also as the passage of short circuit current flow, the protective effect of neutral core can be played.
The packed layer 3 is glass cord.
The insulating barrier 4 is ceramic low smoke halogen-free fire retardant fire resistant polyolefin.The inner liner 6 and sheath 9 are ceramics
Change low smoke halogen-free fire retardant fire resistant polyolefin.
In use, three power wire cores 1 are symmetrically arranged with three wire cores 2, symmetry is good, shielding is good, softness
Performance is good, and the electromagnetic induction of generation cancels each other, and cable is had stronger proof voltage impact property, is amenable at a high speed frequently
The pulse voltage of frequency conversion, plays a good protection to frequency converter, wherein, 9 layers of this frequency-changing cable insulating barrier 4 and sheath make
With ceramic low smoke halogen-free fire retardant fire resistant polyolefine material so that cable is when by fire, insulating barrier 4 and the equal shape of 9 layers of sheath
Into hard ceramic package, heat-insulated, fire insulation double protection is served to inner conductor, relative to traditional fire resisting variable-frequency electric
Cable can ensure to keep the safe operation of longer time under combustion case, in the feelings of 950-1000 celsius temperature flame combustions
Kept under condition 3 hours of safe operation, or even the longer time, substantially increase fire stability.Meanwhile, copper wire layer 8 and copper strips
The dual shield that layer 7 is combined, can suppress interference of the peripheral electromagnetic wave to cable well, can also shield internal electromagnetic induction
Interference to outside metal；Copper wire layer 8 with the dual shield of copper strip layer 7 there is larger cross section metal to accumulate, but also as short
The passage of road electric current, can play the protective effect of neutral core.
Above-mentioned embodiment cannot function as the limitation to the utility model protection domain, for the skill of the art
For art personnel, any alternate modification or conversion made to the utility model embodiment all fall within guarantor of the present utility model
In the range of shield.
Part is not described in detail for the utility model, is the known technology of those skilled in the art of the present technique.
Claims (7)
1. a kind of ceramic fire-proof frequency conversion cable, it is characterised in that：By three power wire cores and three wire core uniform intervals pair
Title is twisted into cable core, and packed layer is provided with cable core, insulating barrier is coated with the outside of each power wire core and wire core, in cable
High fire-retardance nonwoven layer, inner liner, screen layer and sheath are enclosed with outside core successively.
2. a kind of ceramic fire-proof frequency conversion cable according to claim 1, it is characterised in that：The screen layer is by copper wire layer
Copper strip layer composition is wrapped up, the copper wire layer is entwined for copper wire, and the copper strip layer forms for copper strips is wrapped.
3. a kind of ceramic fire-proof frequency conversion cable according to claim 1 or 2, it is characterised in that：The packed layer is glass
Glass cordage.
4. a kind of ceramic fire-proof frequency conversion cable according to claim 1 or 2, it is characterised in that：The insulating barrier is pottery
Porcelain low smoke halogen-free fire retardant fire resistant polyolefin.
5. a kind of ceramic fire-proof frequency conversion cable according to claim 3, it is characterised in that：The insulating barrier is ceramic
Low smoke halogen-free fire retardant fire resistant polyolefin.
6. a kind of ceramic fire-proof frequency conversion cable according to claim 1 or 2, it is characterised in that：The inner liner and shield
Set is ceramic low smoke halogen-free fire retardant fire resistant polyolefin.
7. a kind of ceramic fire-proof frequency conversion cable according to claim 3, it is characterised in that：The inner liner and sheath are equal
For ceramic low smoke halogen-free fire retardant fire resistant polyolefin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720294142.2U CN206564146U (en) | 2017-03-23 | 2017-03-23 | A kind of ceramic fire-proof frequency conversion cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720294142.2U CN206564146U (en) | 2017-03-23 | 2017-03-23 | A kind of ceramic fire-proof frequency conversion cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206564146U true CN206564146U (en) | 2017-10-17 |
Family
ID=60033045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720294142.2U Expired - Fee Related CN206564146U (en) | 2017-03-23 | 2017-03-23 | A kind of ceramic fire-proof frequency conversion cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206564146U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112992435A (en) * | 2021-01-13 | 2021-06-18 | 江西新吉电缆有限公司 | Power cable for cross-linked polyethylene insulation frequency conversion system |
-
2017
- 2017-03-23 CN CN201720294142.2U patent/CN206564146U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112992435A (en) * | 2021-01-13 | 2021-06-18 | 江西新吉电缆有限公司 | Power cable for cross-linked polyethylene insulation frequency conversion system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171017 Termination date: 20210323 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |