CN209591643U - Fire-resisting cable is pressed in one kind - Google Patents
Fire-resisting cable is pressed in one kind Download PDFInfo
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- CN209591643U CN209591643U CN201920579882.XU CN201920579882U CN209591643U CN 209591643 U CN209591643 U CN 209591643U CN 201920579882 U CN201920579882 U CN 201920579882U CN 209591643 U CN209591643 U CN 209591643U
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Abstract
The utility model, which provides, presses fire-resisting cable in one kind, conductor is followed successively by outer in from the inside to the outside, insulating layer, shielded layer, obturator, fireprotection layer, oxygen barrier layer, armor, flame retardant coating and restrictive coating, fireprotection layer includes the first high fire-retardance belt, first non metallic sheath layer and the second high fire-retardance belt, oxygen barrier layer includes the second non metallic sheath layer and third high fire-retardance belt, flame retardant coating includes the 4th high fire-retardance belt, third non metallic sheath layer and the 5th high fire-retardance belt, and the first high fire-retardance belt, second high fire-retardance belt, third high fire-retardance belt, 4th high fire-retardance belt and the 5th high fire-retardance belt are all made of that high fire-retardance band is wrapped to be formed, advantageously reduce cable cost, high fire-retardance band and non metallic sheath connect setting layer by layer, play multilayer proofing, improve the fire resistance of cable, mechanical performance and corrosion resistance etc., high fire-retardance band uses Wrapped mode can make the compact-sized of cable, connect each layer closely, stable structure, and the diameter of cable is allowed to reduce.
Description
Technical field
The utility model relates to field of cable technology, more particularly to pressing fire-resisting cable in one kind.
Background technique
As China's rate of economic development is very fast, hospital, nuclear power station, power plant, supermarket, super-huge skyscraper etc. are important
More stringent requirements are proposed for safety of the intermediate distribution system in place under Fire Conditions, and low pressure fireproof power cable holds
Amount transmission can not meet user demand, and middle pressure fire-resisting cable demand was more and more in recent years.Existing middle pressure fire resisting
Cable usually can all add fire prevention, the refractory material of multilayer, the diameter of cable is caused to increase to improve fire resistance, mechanical
Reduced performance, increased costs, and the gap between each layer is larger, and structure loosely, has the space of burning and oxygen full,
The performance of refractory material cannot be played, also will affect the fire resistance of cable.
Utility model content
Place in view of the deficiency of the prior art, the purpose of the utility model is to provide pressing fire-resisting cable in one kind,
It is compact-sized, have excellent fire prevention, fire resistance, and at low cost.
In order to solve the above technical problems, middle pressure fire-resisting cable provided by the utility model, including several cable cores, the cable core
Including conductor, the outside of the conductor successively coats and is provided with insulating layer and shielded layer, and the insulating layer successively wraps from the inside to the outside
Internal shield, intermediate insulating layer and external shielding layer are included, the shielded layer successively includes semi-conductive layer and metallic shield from the inside to the outside
Layer, the stranding gap location between the cable core are equipped with obturator, the outside of the cable core be successively coated with fireprotection layer, oxygen barrier layer,
Armor, flame retardant coating and restrictive coating, the fireprotection layer successively include the first high fire-retardance belt, the first non metallic sheath from the inside to the outside
Layer and the second high fire-retardance belt, the oxygen barrier layer successively include the second non metallic sheath layer and third high fire-retardance band from the inside to the outside
Layer, the flame retardant coating from the inside to the outside successively include the 4th high fire-retardance belt, third non metallic sheath layer and the 5th high fire-retardance belt,
The first high fire-retardance belt, the second high fire-retardance belt, the third high fire-retardance belt, the 4th high fire-retardance belt and
The 5th high fire-retardance belt is all made of that high fire-retardance band is wrapped to be formed.
Preferably, the first high fire-retardance belt, the second high fire-retardance belt, the third high fire-retardance band
Layer, the 4th high fire-retardance belt and the 5th high fire-retardance belt are overlapped form around high fire-retardance band of double-baging respectively.
Preferably, the high fire-retardance band with a thickness of 0.1~0.3mm, it is the first non metallic sheath layer, described
The thickness of second non metallic sheath layer and the third non metallic sheath layer is respectively 1~5mm.
Preferably, the conductor is aluminium alloy conductor, and the cable core is that circle presses structure.
Preferably, the semi-conductive layer is formed using Semi-conductive buffer band opposite joint is wrapped, the metal screen layer
Wrapped form is put up using copper strips.
Preferably, the obturator is glass fiber rope.
Preferably, the first non metallic sheath layer extruded using halogen-free and low-smoke flame-retardant polyolefin sheathed material and
At the third non metallic sheath layer and the second non metallic sheath layer are respectively adopted ceramic LSOH anti-flaming fire resisting and gather
Alkene protective cover material extrudes.
Preferably, the armor is formed using double-deck galvanized steel strip gap is wrapped.
Preferably, the restrictive coating uses halogen-free and low-smoke flame-retardant polyolefin sheathed material.
The beneficial effects of the utility model are as follows:
1, the fireproofing of cable layer of the utility model includes that the first high fire-retardance belt, the first non metallic sheath layer and second are high
Fire-retardant belt, oxygen barrier layer include the second non metallic sheath layer and third high fire-retardance belt, flame retardant coating include the 4th high fire-retardance belt,
Third non metallic sheath layer and the 5th high fire-retardance belt, and the first high fire-retardance belt, the second high fire-retardance belt, third high fire-retardance band
Layer, the 4th high fire-retardance belt and the 5th high fire-retardance belt are all made of that high fire-retardance band is wrapped to be formed, and high fire-retardance band has fire-retardant, fire resisting
Performance and high fire-retardance band price it is lower, advantageously reduce cable cost；And the spaced multilayer setting of high fire-retardance, play multilayer
Protection, improves the fire resistance of cable；High fire-retardance band can make the compact-sized of cable by the way of wrapped, keep each layer close
Connection, stable structure allow the diameter of cable to reduce；Non metallic sheath layer is set between high fire-retardance belt, cable can be made to have excellent
The mechanical performances such as different flexibility and corrosion resistance, high fire-retardance belt can play the work of buffering, protection to non metallic sheath layer
With.
Detailed description of the invention
Fig. 1 is the schematic diagram of the middle pressure fire-resisting cable of embodiment.
Wherein, 1- conductor, 2- internal shield, 3- intermediate insulating layer, 4- external shielding layer, 5- semi-conductive layer, 6- metallic shield
Layer, 7- obturator, 8- the first high fire-retardance belt, 9- the first non metallic sheath layer, 10- the second high fire-retardance belt, the non-gold of 11- second
Category restrictive coating, 12- third high fire-retardance belt, 13- armor, the 4th high fire-retardance belt of 14-, 15- third non metallic sheath layer,
The 5th high fire-retardance belt of 16-, 17- restrictive coating.
Specific embodiment
In the description of the present invention, it should be noted that term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of describing the present invention and simplifying the description, rather than indicate
Or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot understand
For limitations of the present invention.In addition, term " first ", " second ", " third " are used for description purposes only, and should not be understood as
Indication or suggestion relative importance.
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts
Every other embodiment obtained, fall within the protection scope of the utility model.
Referring to Fig. 1, the middle pressure fire-resisting cable of the present embodiment includes several cable cores, and cable core includes conductor 1, the outside of conductor 1
Successively cladding is provided with insulating layer and shielded layer, and insulating layer successively includes internal shield 2, intermediate insulating layer 3 and outer from the inside to the outside
Shielded layer 4, shielded layer successively include semi-conductive layer 5 and metal screen layer 6 from the inside to the outside, and the stranding gap location between cable core is equipped with
Obturator 7, the outside of cable core are successively coated with fireprotection layer, oxygen barrier layer, armor 13, flame retardant coating and restrictive coating 17, fireprotection layer by
It is interior to outside successively include the first high fire-retardance belt 8, the first non metallic sheath layer 9 and the second high fire-retardance belt 10, oxygen barrier layer is by interior
To outside successively including the second non metallic sheath layer 11 and third high fire-retardance belt 12, flame retardant coating successively includes the 4th high from the inside to the outside
Fire-retardant belt 14, third non metallic sheath layer 15 and the 5th high fire-retardance belt 16, the first high fire-retardance belt 8, the second high fire-retardance band
Layer 10, third high fire-retardance belt 12, the 4th high fire-retardance belt 14 and the 5th high fire-retardance belt 16 be all made of high fire-retardance band it is wrapped and
At.The fireproofing of cable layer of the present embodiment includes the first high fire-retardance belt 8, the first non metallic sheath layer 9 and the second high fire-retardance band
Layer 10, oxygen barrier layer include the second non metallic sheath layer 11 and third high fire-retardance belt 12, and flame retardant coating includes the 4th high fire-retardance belt
14, third non metallic sheath layer 15 and the 5th high fire-retardance belt 16, and the first high fire-retardance belt 8, the second high fire-retardance belt 10,
Three high fire-retardance belts 12, the 4th high fire-retardance belt 14 and the 5th high fire-retardance belt 16 are all made of that high fire-retardance band is wrapped to be formed, high resistant
Combustion band has good fire-retardant, fire resistance, and high fire-retardance band is lower than the price of other refractory materials, not only can satisfy cable
Flame retardant effect also helps reduction cable cost；And the spaced multilayer setting of high fire-retardance, multilayer proofing is played, the resistance to of cable is improved
Fiery performance；High fire-retardance band can make the compact-sized of cable by the way of wrapped, connect each layer closely, stable structure, allow electricity
The diameter of cable reduces；Non metallic sheath layer is set between high fire-retardance belt, can make cable that there are the mechanicalnesses such as excellent flexibility
Energy and corrosion resistance, high fire-retardance belt can play the role of buffering, protection to non metallic sheath layer.
In the present embodiment, the first high fire-retardance belt 8, the second high fire-retardance belt 10, third high fire-retardance belt the 12, the 4th are high
Fire-retardant belt 14 and the 5th high fire-retardance belt 16 are overlapped respectively to be formed around high fire-retardance band of double-baging.In such a way that overlapping is wrapped,
Cable can closely be protected.The Duplication of the high fire-retardance band of the present embodiment is 20~30%.In addition, high fire-retardance band with a thickness of 0.1
The thickness of~0.3mm, the first non metallic sheath layer 9, the second non metallic sheath layer 11 and third non metallic sheath layer 15 is respectively
1~5mm can reduce the diameter of cable while guaranteeing cable excellent fire-retardant, fire resistance.
In the present embodiment, conductor 1 is aluminium alloy conductor, and cable core is that circle presses structure, and tightening factor is up to 0.92.
In the present embodiment, the internal shield 2 of insulating layer, intermediate insulating layer 3 and external shielding layer 4 use three-layer co-extruded side
Formula is made.Internal shield 2, which is shielded using 35kV and following cables with extruded insulation with semiconductive cross-linking type, expects, intermediate insulating layer 3 is adopted
With 35kV and following cross-linked polyethylene insulating material, external shielding layer 4 is crosslinked using 35kV and following cables with extruded insulation with semiconductive
Type strippable shielding material.
In the present embodiment, shielded layer includes semi-conductive layer 5 and metal screen layer 6.Semi-conductive layer 5 uses semi-conductive buffer
Opposite joint is wrapped forms for band, can not only be played between external shielding layer 4 and metal screen layer 6 in such a way that opposite joint is wrapped due to
The buffering of copper strips damage external shielding layer 4 when combustion high temperature and the effect to block water, the stability and extension for improving cable use the longevity
Life, and the copper strips that external shielding layer 6 uses is generally very thin, usually 0.1~0.12mm, Semi-conductive buffer band opposite joint is wrapped can be with
Guarantee that the outside diameter of cable outside semi-conductive layer 5 is smooth, advantageously ensures that the wrapped effect of the copper strips of metal screen layer 6.Metallic shield
Layer 6 using copper strips put up it is wrapped form, fully take into account cable operation when leakage current effect, using put up it is wrapped by the way of
It can fully ensure that the connectivity between copper strips, the copper strips of the present embodiment uses copper belt.
In the present embodiment, obturator 7 uses glass fiber rope, and glass fiber band is heat-resist and has preferable
Flame retardant property.
The fireprotection layer of the present embodiment includes the first high fire-retardance belt 8, the first non metallic sheath layer 9 and the second high fire-retardance band
Layer 10, the first high fire-retardance belt 8 and the second high fire-retardance belt 10 respectively by being overlapped high fire-retardance band around 0.2mm thickness of double-baging and
At the Duplication of high fire-retardance band is 20~30%.First non metallic sheath layer 9 is gathered by the LSOH anti-flaming of one layer of 2.0mm thickness
Alkene protective cover material extrudes.High fire-retardance band can play fire resisting, fire-retardant effect, select the high fire-retardance band of 2 layers of 0.2mm, not only
In view of meeting cable-flame retardant effect, it is also considered that increase the cost of cable, high resistant to economic cost if high fire-retardance band is too thick
Combustion band and non metallic sheath all have fire-retardant, fireproof effect, but the fire-retardant of high fire-retardance band, fire resistance are better than nonmetallic shield
Set, and non metallic sheath has great influence and can protect cables from burn into animal and bites to the mechanical performance of cable
The effect of external world, therefore be disposed adjacent using high fire-retardance band and non metallic sheath, it both can guarantee that cable has excellent resistance
Combustion, fire resistance, also can guarantee the good mechanical performance of cable and service life.
In the present embodiment, oxygen barrier layer includes the second non metallic sheath layer 11 and third high fire-retardance belt 12.Second non-gold
Belong to restrictive coating 11 to extrude by the ceramic LSOH anti-flaming fire-resistant polyolefin material that a layer thickness is 4.0mm, ceramic
LSOH anti-flaming fire-resistant polyolefin material has high-intensitive fire resistance, and ceramic after combustion, can protect internal structure,
And there is oxygen barrier effect, keep internal structure nonflammable.
In the present embodiment, armor 13 is formed using double-deck galvanized steel strip gap is wrapped, steel band clearance rate≤48%.It is double
Layer galvanized steel strip has oxygen barrier, fire resisting, measuring body effect and protects cables from external mechanical stress to the damage of cable body
Bad effect, it is more preferable using the wrapped softness for making cable in gap.
In the present embodiment, flame retardant coating includes the 4th high fire-retardance belt 14, third non metallic sheath layer 15 and the 5th high resistant
Fire belt 16.4th high fire-retardance belt 14 and the 5th high fire-retardance belt 16 respectively by the high fire-retardance band overlapping of two layers of 0.2mm thickness around
Wrap, third non metallic sheath layer 15 using one layer of 3.0mm thickness ceramic LSOH anti-flaming fire-resistant polyolefin extrude and
At.The high fire-retardance band and non metallic sheath of multilayer are set, can play the role of further protecting cable internal structure.
In the present embodiment, restrictive coating 17 uses halogen-free and low-smoke flame-retardant polyolefin sheathed material, and jacket thickness is according to different electricity
Cable specification is selected, and GB/T31840-2015 requirement is met.
To sum up, the cable of the present embodiment be followed successively by from the inside to the outside conductor 1, insulating layer, shielded layer, obturator 7, fireprotection layer,
Oxygen barrier layer, armor 13, flame retardant coating and restrictive coating 17, fireprotection layer include the first high fire-retardance belt 8, the first non metallic sheath layer 9
With the second high fire-retardance belt 10, oxygen barrier layer includes the second non metallic sheath layer 11 and third high fire-retardance belt 12, flame retardant coating include
4th high fire-retardance belt 14, third non metallic sheath layer 15 and the 5th high fire-retardance belt 16, and the first high fire-retardance belt 8, second
High fire-retardance belt 10, third high fire-retardance belt 12, the 4th high fire-retardance belt 14 and the 5th high fire-retardance belt 16 are all made of high fire-retardance
It being formed with wrapped, high fire-retardance band has good fire-retardant, fire resistance, and high fire-retardance band is lower than the price of other refractory materials,
It not only can satisfy cable-flame retardant effect and also help reduction cable cost；And the spaced multilayer setting of high fire-retardance, play multilayer
Protection, improves the fire resistance of cable；High fire-retardance band can make the compact-sized of cable by the way of wrapped, keep each layer close
Connection, stable structure allow the diameter of cable to reduce；Non metallic sheath layer is set between high fire-retardance belt, cable can be made to have excellent
The mechanical performances such as different flexibility and corrosion resistance, high fire-retardance belt can play the work of buffering, protection to non metallic sheath layer
With.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, without deviating from the technical principle of the utility model, several improvement and replacement can also be made, these change
It also should be regarded as the protection scope of the utility model into replacement.
Claims (9)
1. pressing fire-resisting cable in one kind, which is characterized in that including several cable cores, the cable core includes conductor, outside the conductor
Portion successively coats and is provided with insulating layer and shielded layer, and the insulating layer successively includes internal shield, intermediate insulating layer from the inside to the outside
And external shielding layer, the shielded layer successively include semi-conductive layer and metal screen layer, the stranding between the cable core from the inside to the outside
Gap location is equipped with obturator, and the outside of the cable core is successively coated with fireprotection layer, oxygen barrier layer, armor, flame retardant coating and restrictive coating,
The fireprotection layer successively includes the first high fire-retardance belt, the first non metallic sheath layer and the second high fire-retardance belt, institute from the inside to the outside
State oxygen barrier layer from the inside to the outside successively include the second non metallic sheath layer and third high fire-retardance belt, the flame retardant coating from the inside to the outside according to
Secondary includes the 4th high fire-retardance belt, third non metallic sheath layer and the 5th high fire-retardance belt, the first high fire-retardance belt, described
Second high fire-retardance belt, the third high fire-retardance belt, the 4th high fire-retardance belt and the 5th high fire-retardance belt are adopted
It is formed with high fire-retardance band is wrapped.
2. middle pressure fire-resisting cable according to claim 1, which is characterized in that the first high fire-retardance belt, described second
High fire-retardance belt, the third high fire-retardance belt, the 4th high fire-retardance belt and the 5th high fire-retardance belt are overlapped respectively
Around double-baging, high fire-retardance band is formed.
3. middle pressure fire-resisting cable according to claim 2, which is characterized in that the high fire-retardance band with a thickness of 0.1~
0.3mm, the thickness point of the first non metallic sheath layer, the second non metallic sheath layer and the third non metallic sheath layer
It Wei not 1~5mm.
4. middle pressure fire-resisting cable according to claim 1, which is characterized in that the conductor is aluminium alloy conductor, the cable
Core is that circle presses structure.
5. middle pressure fire-resisting cable according to claim 1, which is characterized in that the semi-conductive layer uses Semi-conductive buffer band
Opposite joint is wrapped to be formed, and the metal screen layer puts up wrapped form using copper strips.
6. middle pressure fire-resisting cable according to claim 1, which is characterized in that the obturator is glass fiber rope.
7. middle pressure fire-resisting cable according to claim 1, which is characterized in that the first non metallic sheath layer uses Halogen
Low-smoke flame-retardant polyolefin sheathed material extrudes, and the third non metallic sheath layer and the second non metallic sheath layer are adopted respectively
It is extruded with ceramic LSOH anti-flaming fire-resistant polyolefin jacket material.
8. middle pressure fire-resisting cable according to claim 1, which is characterized in that the armor is using between the double-deck galvanized steel strip
Gap is wrapped to be formed.
9. middle pressure fire-resisting cable according to claim 1, which is characterized in that the restrictive coating is poly- using LSOH anti-flaming
Alkene protective cover material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920579882.XU CN209591643U (en) | 2019-04-25 | 2019-04-25 | Fire-resisting cable is pressed in one kind |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920579882.XU CN209591643U (en) | 2019-04-25 | 2019-04-25 | Fire-resisting cable is pressed in one kind |
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| Publication Number | Publication Date |
|---|---|
| CN209591643U true CN209591643U (en) | 2019-11-05 |
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ID=68347863
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920579882.XU Active CN209591643U (en) | 2019-04-25 | 2019-04-25 | Fire-resisting cable is pressed in one kind |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109949997A (en) * | 2019-04-25 | 2019-06-28 | 佛山市宏图中宝电缆有限公司 | Fire-resisting cable is pressed in one kind |
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2019
- 2019-04-25 CN CN201920579882.XU patent/CN209591643U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109949997A (en) * | 2019-04-25 | 2019-06-28 | 佛山市宏图中宝电缆有限公司 | Fire-resisting cable is pressed in one kind |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 528000 Guangdong Foshan Shunde District Ronggui Street Xiao Huangpu Community Neighborhood Committee Jianye Middle Road 2 Patentee after: Guangdong Zhongbao Cable Co., Ltd Address before: 528000 Guangdong Foshan Shunde District Ronggui Street Xiao Huangpu Community Neighborhood Committee Jianye Middle Road 2 Patentee before: Foshan Hongtu Zhongbao Cable Co. Ltd. |
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| CP01 | Change in the name or title of a patent holder |