CN209015734U - A kind of mineral insulation copper metal sheath fireproof cable - Google Patents
A kind of mineral insulation copper metal sheath fireproof cable Download PDFInfo
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- CN209015734U CN209015734U CN201822241996.1U CN201822241996U CN209015734U CN 209015734 U CN209015734 U CN 209015734U CN 201822241996 U CN201822241996 U CN 201822241996U CN 209015734 U CN209015734 U CN 209015734U
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- conducting wire
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- insulated conductor
- mineral insulation
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Abstract
The utility model discloses a kind of mineral insulation copper metal sheath fireproof cables, including oversheath and copper sheath, the copper sheath is internally provided with insulated conductor group, it is surrounded with the first fire lagging on the outer wall of the insulated conductor group, elastic packed layer is provided between the copper sheath and the first fire lagging, the insulated conductor group includes circumferentially uniformly distributed more winding leads and alkali-free glass wool, there are gaps between each winding lead, the alkali-free glass wool filling is in the gap, the winding lead includes conducting wire and the successively ceramic silicon rubber and the second fire lagging on the conducting wire outer wall from inside to outside.The utility model structure is simple, exquisite composition, and effective solution cable is in transport use process, and conducting wire is often with the inner wall frictional impact of metal coating housing, the problem for causing to wrap up the insulating materials breakage of conducting wire.
Description
Technical field
The utility model relates to field of cables more particularly to a kind of mineral insulation copper metal sheath fireproof cables.
Background technique
With the high speed development of economic construction, Electrical Safety is increasingly valued by people, and guarantees the peace of transmission line of electricity
Become the top priority of preventing electric fire entirely, the cable on existing market mostly uses insulating materials to wrap up conducting wire, so
Metal coating housing in rear enclosure, filled between metal coating housing and cable it is some have insulation fire-proof function for squeezing
The filler of fixed conducting wire, still, such cable find that conducting wire is often interior with metal coating housing in transport use process
Wall friction collision causes the insulating materials for wrapping up conducting wire damaged, seriously affects the safety of transmission line of electricity.
Utility model content
The purpose of the utility model is to provide a kind of mineral insulation copper metal sheath fireproof cables, solve cable and are transporting
In use process, conducting wire often with the inner wall frictional impact of metal coating housing, leads to the insulating materials breakage for wrapping up conducting wire
Problem.
In order to solve the above technical problems, the utility model adopts the following technical solution:
A kind of mineral insulation copper metal sheath fireproof cable of the utility model, including oversheath and copper sheath, it is described outer
Sheath is wrapped on the outer wall of the copper sheath；The copper sheath is internally provided with insulated conductor group, the insulated conductor group
Outer wall on be surrounded with the first fire lagging, be provided with elastic packed layer between the copper sheath and the first fire lagging；
The insulated conductor group includes circumferentially uniformly distributed more winding leads and alkali-free glass wool, each winding lead
Between there are gap, the alkali-free glass wool filling is in the gap；The winding lead include conducting wire and from inside to outside according to
Secondary ceramic silicon rubber and the second fire lagging on the conducting wire outer wall.
Further, multiple buffer grooves are provided on the outer wall of the elastic packed layer, in the elastic packed layer
Between be provided with circumferentially uniformly distributed multiple located crush slots, the located crush slot position the winding lead and with it is described wrapped
Conducting wire, which is worked in coordination, squeezes fixed first fire lagging.
Further, the buffer groove is arc-shaped, and is distributed on the outer wall of the elastic packed layer.
Further, multiple stomatas are provided in the elastic packed layer.
Further, first fire lagging and the second fire lagging are all made of mica tape.
Compared with prior art, the advantageous effects of the utility model:
A kind of mineral insulation copper metal sheath fireproof cable of the utility model, including the first fire lagging, elasticity are filled out
Layer is filled, prevents the first fire lagging directly to contact with copper sheath by elastic packed layer, effectively avoids copper sheath pair
The friction destruction of first fire lagging, meanwhile, located crush slot positioning winding lead is simultaneously worked in coordination extruding with winding lead
The first fire lagging is fixed, prevents the first fire lagging from loosely falling off, is provided on the outer wall of elastic packed layer multiple slow
Groove is rushed, buffer groove effectively prevents due to conductor overheating and causes material expansion that the construction of cable is caused to destroy.This is practical
New structure is simple, exquisite composition, effective solution cable in transport use process, conducting wire often with metal coating housing
Inner wall frictional impact, cause wrap up conducting wire insulating materials breakage problem.
Detailed description of the invention
The utility model is described in further detail for explanation with reference to the accompanying drawing.
Fig. 1 is the cross-sectional structure schematic diagram of the utility model；
Fig. 2 is the cross-sectional structure schematic diagram of the elastic packed layer of the utility model.
Description of symbols: 1, oversheath；2, copper sheath；3, elastic packed layer；301, buffer groove；302, located crush
Slot；303, stomata；4, the first fire lagging；5, insulated conductor group；501, winding lead；501-1, conducting wire；501-2, ceramics
Silicon rubber；501-3, the second fire lagging；502, alkali-free glass wool.
Specific embodiment
As shown in Fig. 1 to 2, a kind of mineral insulation copper metal sheath fireproof cable, including oversheath 1 and copper sheath 2, outside
Sheath 1 is wrapped on the outer wall of copper sheath 2, and oversheath 1 selects low smoke and zero halogen material, and copper sheath 2 is arranged in insulated conductor group 5
Inside, has spiral helicine ripple on copper sheath 2, and spiral helicine ripple strengthens the structural strength of copper sheath 2, it is therefore prevented that extraneous
Collision squeezes 2 built-in electrical insulation conducting wire group 5 of copper sheath and destroys, since insulated conductor group 5 can generate heat when conducting electric current, helical form
Ripple heat can also be distributed.
It is surrounded with the first fire lagging 4 on the outer wall of insulated conductor group 5, between copper sheath 2 and the first fire lagging 4
It is provided with elastic packed layer 3, elastic packed layer 3 prevents the first fire lagging 4 directly to contact with copper sheath 2, effectively keeps away
Copper sheath 2 is exempted to the friction destruction of the first fire lagging 4.
Insulated conductor group 5 includes circumferentially uniformly distributed more winding leads 501 and alkali-free glass wool 502, in the present embodiment
In, the quantity of winding lead 501 is specially five, and there are gap between each winding lead 501, alkali-free glass wool 502 is filled in
In gap, each winding lead 501 is individually kept apart, effectively prevents the friction between each winding lead 501, simultaneously
Alkali-free glass wool 502 itself has good tension, anti-disconnected characteristic, directly enhances the stretch-proof characteristic of insulated conductor group 5.
In order to which the better shape with more winding leads 501 matches, and prevent the first fire lagging 4 from loosely falling off, in elasticity
The centre of filled layer 3 is provided with circumferentially uniformly distributed multiple located crush slots 302, and located crush slot 302 positions winding lead 501
And the first fire lagging 4 is fixed with the extruding of working in coordination of winding lead 501.
As shown in Fig. 2, since insulated conductor group 5 can generate heat when conducting electric current, so as to cause the swollen of elastic packed layer 3
It is swollen, the destruction of the construction of cable is caused in order to avoid the excessively expansion of elastic packed layer 3, therefore on the outer wall of elastic packed layer 3
Multiple buffer grooves 301 are provided with, multiple stomatas 303 are provided in elastic packed layer 3.In the present embodiment, buffer groove
301 be arc-shaped, and is distributed on the outer wall of elastic packed layer 3.
In order to enhance the insulating properties of winding lead 501, it is successively surrounded with ceramics from inside to outside on the outer wall of conducting wire 501-1
Silicon rubber 501-2 and the second fire lagging 501-3.
In the present embodiment, the first fire lagging 4 and the second fire lagging 501-3 are all made of mica tape, and elasticity is filled out
Layer 3 is filled for insulation fire-resistant rubber.
Embodiment described above is only that the preferred embodiment of the utility model is described, not to the utility model
Range is defined, and under the premise of not departing from the spirit of the design of the utility model, those of ordinary skill in the art are practical new to this
The various changes and improvements that the technical solution of type is made should all fall into the protection scope that the utility model claims book determines
It is interior.
Claims (5)
1. a kind of mineral insulation copper metal sheath fireproof cable, including oversheath (1) and copper sheath (2), the oversheath (1)
It is wrapped on the outer wall of the copper sheath (2)；It is characterized by: the copper sheath (2) is internally provided with insulated conductor group
(5), it is surrounded with the first fire lagging (4) on the outer wall of the insulated conductor group (5), the copper sheath (2) and the first fire prevention
Elastic packed layer (3) are provided between insulating layer (4)；
The insulated conductor group (5) includes circumferentially uniformly distributed more winding leads (501) and alkali-free glass wool (502), each institute
It states there are gap between winding lead (501), the alkali-free glass wool (502) is filled in the gap；
The winding lead (501) includes conducting wire (501-1) and from inside to outside successively on the conducting wire (501-1) outer wall
Ceramic silicon rubber (501-2) and the second fire lagging (501-3).
2. mineral insulation copper metal sheath fireproof cable according to claim 1, it is characterised in that: the elasticity filling
It is provided with multiple buffer grooves (301) on the outer wall of layer (3), the centre of the elastic packed layer (3) is provided with circumferentially uniformly distributed
Multiple located crush slots (302), the located crush slot (302) positions the winding lead (501) and wrapped leads with described
Line (501), which is worked in coordination, squeezes fixed first fire lagging (4).
3. mineral insulation copper metal sheath fireproof cable according to claim 2, it is characterised in that: the buffer groove
(301) it is arc-shaped, and is distributed on the outer wall of the elastic packed layer (3).
4. mineral insulation copper metal sheath fireproof cable according to claim 2, it is characterised in that: the elasticity filling
Multiple stomatas (303) are provided in layer (3).
5. mineral insulation copper metal sheath fireproof cable according to claim 1, it is characterised in that: first fire prevention
Insulating layer (4) and the second fire lagging (501-3) are all made of mica tape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822241996.1U CN209015734U (en) | 2018-12-29 | 2018-12-29 | A kind of mineral insulation copper metal sheath fireproof cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822241996.1U CN209015734U (en) | 2018-12-29 | 2018-12-29 | A kind of mineral insulation copper metal sheath fireproof cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209015734U true CN209015734U (en) | 2019-06-21 |
Family
ID=66844323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822241996.1U Active CN209015734U (en) | 2018-12-29 | 2018-12-29 | A kind of mineral insulation copper metal sheath fireproof cable |
Country Status (1)
| Country | Link |
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| CN (1) | CN209015734U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113035436A (en) * | 2021-02-19 | 2021-06-25 | 安徽铁信光电科技有限公司 | Fireproof cable |
-
2018
- 2018-12-29 CN CN201822241996.1U patent/CN209015734U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113035436A (en) * | 2021-02-19 | 2021-06-25 | 安徽铁信光电科技有限公司 | Fireproof cable |
| CN113035436B (en) * | 2021-02-19 | 2023-02-17 | 安徽铁信光电科技有限公司 | Fireproof cable |
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