CN208637167U - A kind of mineral insulated cable - Google Patents
A kind of mineral insulated cable Download PDFInfo
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- CN208637167U CN208637167U CN201820900251.9U CN201820900251U CN208637167U CN 208637167 U CN208637167 U CN 208637167U CN 201820900251 U CN201820900251 U CN 201820900251U CN 208637167 U CN208637167 U CN 208637167U
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- copper
- cable
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- layer
- mineral insulated
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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Abstract
The utility model discloses a kind of mineral insulated cables, are related to field of cable technology.Mineral insulated cable provided by the utility model, the periphery including at least one copper conductor, the copper conductor are followed successively by the first graphite ene coatings, insulating layer, the first polyolefin protective layer, copper armor, glass fibre fireprotection layer, the second polyolefin protective layer and copper sheath.The periphery that graphite ene coatings are wound on copper conductor, which can form conductive layer, can also shield electromagnetic interference, improve the current-carrying capacity and anti-impacting with high pressure of conductor, the usage amount of copper conductor can be effectively reduced in the case where same cross-sectional；Copper armor can be used as the zero curve of conventional quad and five-core cable；Copper sheath can be used as the ground wire of conventional five-core cable, thus cable can be reduced to three-core structure, to reduce the outside diameter of cable, reduce cable cost.
Description
Technical field
The utility model relates to field of cable technology more particularly to a kind of mineral insulated cables.
Background technique
With the development of progress and the urbanization of science and technology, electricity has been widely used to huge numbers of families, in cable
When the long distance transmission communication information of road, communication quality and stability depend greatly on communication loop to external interference and
The protection capability interfered with each other.In order to reduce these interference, the most fundamental method is exactly on cable using shielding construction, a side
Face can inhibit influence of the external electromagnetic field to transmission line, avoid communication failure, and noise increases, transmission error code, signal errors etc.
On the other hand phenomenon can also reduce the electromagnetic radiation that transmission signal is external in cable, reduce the pollution to periphery electromagnetic environment.
At present on cable increase shielding construction mode mainly have wire bundle around and metal tape it is wrapped.Pass through increase
The density of shielded layer is to reach good shield effectiveness, however, under normal circumstances, the shield effectiveness of braided metal silk screen is with volume
It knits the increase of density and increases, decline with the raising of frequency.Due to being used as shielding material usually using metal materials such as copper, steel
Material, being easy to cause cable, the production cost increases, increases the cross-sectional area of cable, to increase the weight of cable.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of small outer diameters, the simple mineral insulated cable of structure.
To solve the above-mentioned problems, the technical solution of the utility model are as follows:
A kind of mineral insulated cable, which is characterized in that the protective layer including cable core and wrapped cable core；
The cable core include: at least one copper conductor, the copper conductor periphery be followed successively by the first graphite ene coatings with
And insulating layer；
The protective layer of the cable core successively includes: the first polyolefin protective layer, copper armor, glass fibre from inside to outside
Fireprotection layer, the second polyolefin protective layer and copper sheath, wherein the first polyolefin protective layer connects with insulating layer.
Its further technical solution are as follows: the copper conductor diameter is 4.0-22.3mm, the first graphene coating layer thickness is
0.1-0.2mm, thickness of insulating layer 0.45-0.75mm.
Its further technical solution are as follows: have 0.1-0.2mm thick between the copper armor and glass fibre fireprotection layer
Second graphite ene coatings.
Its further technical solution are as follows: the copper armor uses diameter for the solid circular copper wire arrangement of 1.33-2.23mm
In the periphery of the first polyolefin protective layer.
Its further technical solution are as follows: the first polyolefin protective layer thickness is 1.0-3.0mm, glass fibre is prevented fires
Layer is 1.0-3.0mm with a thickness of 0.2-0.8mm, the second polyolefin protective layer thickness.
Its further technical solution are as follows: the copper sheath is the seamless ripple copper sheath that copper strips is formed, with a thickness of 0.4-
0.7mm。
Its further technical solution are as follows: the cable core is at least 3 copper conductors.
Preferably, the cable core is 3 copper conductors.
Its further technical solution are as follows: the insulating layer is Inorganic synthese mica tape.
Compared with prior art, the attainable technical effect of the utility model institute includes: that graphite ene coatings are wound on copper conductor
Periphery can form conductive layer and can also shield electromagnetic interference, the current-carrying capacity and anti-impacting with high pressure of conductor are improved, at identical section
The usage amount of copper conductor can be effectively reduced in the case where face；Copper armor can be used as the zero of conventional quad and five-core cable
Line；Copper sheath can be used as the ground wire of conventional five-core cable, thus cable can be reduced to three-core structure, to reduce outside cable
Diameter reduces cable cost.
Detailed description of the invention
In order to illustrate more clearly of the utility model embodiment technical solution, will make below to required in embodiment description
Attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is some embodiments of the utility model, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is the mineral insulated cable sectional view of the utility model embodiment.
Appended drawing reference
Copper conductor 1, the first graphite ene coatings 2, insulating layer 3, the first alkene protective layer 4, copper armor 5, glass fibre are anti-
Fire bed 6, the second alkene protective layer 7, copper sheath 8.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, the technical solution in embodiment is carried out it is clear, complete
Ground describes, and similar reference numerals represent similar component in attached drawing.Obviously, will be described below embodiment is only that this is practical
Novel a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
Member's every other embodiment obtained without creative efforts, belongs to the model of the utility model protection
It encloses.
It should be appreciated that ought use in this specification and in the appended claims, term " includes " and "comprising" instruction
Described feature, entirety, step, operation, the presence of element and/or component, but one or more of the other feature, whole is not precluded
Body, step, operation, the presence or addition of element, component and/or its set.
It is also understood that specific merely for the sake of describing in this utility model embodiment term used in the description
The purpose of embodiment and be not intended to limit the utility model embodiment.Such as in the utility model embodiment specification and appended power
As used in sharp claim, other situations unless the context is clearly specified, otherwise " one " of singular, "one"
And "the" is intended to include plural form.
Embodiment 1
It is a kind of mineral insulated cable provided by the embodiment of the utility model referring to Fig. 1, including cable core and wrapped
The protective layer of cable core；Cable core include: at least one copper conductor 1, copper conductor 1 periphery be followed successively by the first graphite ene coatings 2
And insulating layer 3；The protective layer of cable core successively includes: the first polyolefin protective layer 4, copper armor 5, glass fibers from inside to outside
Tie up fireprotection layer 6, the second polyolefin protective layer 7 and copper sheath 8；Wherein, the first polyolefin protective layer 4 connects with insulating layer 3.
In specific implementation, the first graphite ene coatings 2 and the second graphite ene coatings (not shown) are to be with graphene powder
The conductive coating of primary raw material is sprayed on the periphery of copper conductor 1 and copper armor 5, forms graphene after conductive coating solidification and applies
Layer.The conductive energy of graphite ene coatings.
In specific implementation, insulating layer 3 is Inorganic synthese mica tape.Since mica tape is in 1000 DEG C of fire sources, voltage 1000V's
In the case of, good insulation performance is still able to maintain by 90min, therefore, mica tape insulating layer has good insulation and fire resisting
Effect, the wrapped tight type of cable and safety can be improved using wrapped molding mode, ensure that the stability of cable insulation.
In some embodiments, such as the present embodiment, three core knots that cable core is made of after stranding three copper conductors 1
Structure.The diameter of every copper conductor 1 is 4.0mm, and periphery is coated with the graphite ene coatings 2 of 0.1mm thickness, and 2 periphery of graphite ene coatings is wrapped
There is 0.45 thick mica tape insulating layer 3.
In specific implementation, for the first polyolefin protective layer 4 with a thickness of 1.0mm, the second polyolefin protective layer 7 is 1.0mm.The
One polyolefin protective layer 4 and the second polyolefin protective layer 7 are ceramic polyolefin protective layer, have high temperature resistant and protection core
Effect, meet environmental requirement, smog is small when burning, and the toxic gas of release is few, while cable can be prevented to be corroded.
In specific implementation, copper armor 5 uses diameter to be arranged in the protection of the first polyolefin for the solid circular copper wire of 1.33mm
The periphery of layer.Copper armor 5 may act as the use of shield layer, can also function as conventional quad (one line of three-phase) He Wuxin
The zero curve of cable (two line of three-phase) uses.
In some embodiments, such as the present embodiment, 0.1- is equipped between copper armor 5 and glass fibre fireprotection layer 6
Second graphite ene coatings (not shown) of 0.2mm thickness, on the one hand can be electromagnetically shielded, and copper armor 5 is on the other hand improved
Electric conductivity reduces the dosage of copper.
In specific implementation, glass fibre fireprotection layer 6 with a thickness of 0.2mm.Because glass fibre have good insulating properties and
Glass fibre fireprotection layer 6 is placed between copper armor 5 and the second polyolefin protective layer 7, can effectively improve copper armour by heat resistance
Insulating properties when layer is used as zero curve is filled, guarantees the stability and reliability of power transmission.
In specific implementation, copper sheath 8 with a thickness of 0.4mm.Copper sheath 8, which is copper strips, forms seamless copper by argon arc welding
Pipe, seamless copper pipe carry out embossing using corrugating die, thus the seamless ripple copper sheath formed.It is mutual by increasing embossing depth
Or reduce embossing spacing and the flexibility of copper sheath and entire cable can be enhanced, it is laid with convenient for cable installation.Copper sheath 8 has
Resist bending, waterproof and dampproof, shielding, the effect of carrying mechanical stress, the ground wire that can also function as conventional five-core cable use.
It should be noted that the cable of the present embodiment three-core structure can be by the zero of conventional quad and five-core cable
Line is replaced using copper armor, the ground wire of five-core cable is replaced using copper sheath, and then to conventional quad and five cores electricity
Cable optimizes structure, to reduce the outside diameter of cable, saves the usage amount of copper conductor 1.
It should be noted that the selection of copper conductor 1 need to meet the 1st kind or the 2nd kind of copper of GB/T3956-2008 standard requirements
Conductor.It is easily worked, does not break while guaranteeing cable bend flexibility.Wherein, the 1st kind of copper conductor 1 is single solid conductors,
Suitable for small bore cable, can be used directly；2nd kind of copper conductor 1 need to use after the twisted mode pressed is handled.
Mineral insulated cable provided in this embodiment is three-core structure, and the periphery that graphite ene coatings are wound on copper conductor can be formed
Conductive layer can also shield electromagnetic interference, improve the current-carrying capacity and anti-impacting with high pressure of conductor, can in the case where same cross-sectional
Effectively reduce the usage amount of copper conductor；Copper armor can be used as the zero curve of conventional quad and five-core cable；Copper sheath can be made
For the ground wire of conventional five-core cable, therefore the alternative conventional quad of mineral insulated cable of the present embodiment and five cores electricity
Cable reduces cable weight to reduce the outside diameter of cable.
Embodiment 2
The present embodiment difference from example 1 is that: the diameter of every copper conductor 1 be 22.3 millimeters；First graphite
Ene coatings 2 with a thickness of 0.2 millimeter；Insulating layer 3 with a thickness of 0.75 millimeter；First polyolefin protective layer 4 with a thickness of 3.0 milli
Rice；Second polyolefin protective layer 7 with a thickness of 3.0 millimeters；The filled circles copper wire diameter that copper armor 5 uses is 2.23 millimeters；
Glass fibre fireprotection layer 6 with a thickness of 0.8 millimeter；Copper sheath 8 with a thickness of 0.7 millimeter, wherein the first polyolefin protective layer 4
Connect with insulating layer 3.
Embodiment 3
The present embodiment difference from example 1 is that: the diameter of every copper conductor 1 be 10.3 millimeters；First graphite
Ene coatings 2 with a thickness of 0.2 millimeter；Insulating layer 3 with a thickness of 0.65 millimeter；First polyolefin protective layer 4 with a thickness of 2.0 milli
Rice；Second polyolefin protective layer 7 with a thickness of 2.0 millimeters；The filled circles copper wire diameter that copper armor 5 uses is 1.83 millimeters；
Glass fibre fireprotection layer 6 with a thickness of 0.5 millimeter；Copper sheath 8 with a thickness of 0.6 millimeter, wherein the first polyolefin protective layer 4
Connect with insulating layer 3.
In the above-described embodiments, it all emphasizes particularly on different fields to the description of each embodiment, is not described in some embodiment
Part, reference can be made to the related descriptions of other embodiments.
The above is specific embodiment of the present utility model, but the protection scope of the utility model is not limited to
This, anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in various etc.
The modifications or substitutions of effect, these modifications or substitutions should be covered within the scope of the utility model.Therefore, this is practical new
The protection scope of type should be subject to the protection scope in claims.
Claims (9)
1. a kind of mineral insulated cable, which is characterized in that the protective layer including cable core and wrapped cable core；
The cable core include: at least one copper conductor, the copper conductor periphery be followed successively by the first graphite ene coatings and absolutely
Edge layer；
The protective layer of the cable core successively includes: the first polyolefin protective layer, copper armor, glass fibre fire prevention from inside to outside
Layer, the second polyolefin protective layer and copper sheath；Wherein, the first polyolefin protective layer connects with insulating layer.
2. mineral insulated cable according to claim 1, which is characterized in that the copper conductor diameter be 4.0-22.3mm,
First graphene coating layer thickness is 0.1-0.2mm, thickness of insulating layer 0.45-0.75mm.
3. mineral insulated cable according to claim 1, which is characterized in that the copper armor and glass fibre fireprotection layer
Between have the second graphite ene coatings of 0.1-0.2mm thickness.
4. mineral insulated cable according to claim 1, which is characterized in that the copper armor uses diameter for 1.33-
The solid circular copper wire of 2.23mm is arranged in the periphery of the first polyolefin protective layer.
5. mineral insulated cable according to claim 1, which is characterized in that the first polyolefin protective layer thickness is
1.0-3.0mm, glass fibre fireprotection layer are 1.0-3.0mm with a thickness of 0.2-0.8mm, the second polyolefin protective layer thickness.
6. mineral insulated cable according to claim 1, which is characterized in that the copper sheath is the seamless wave that copper strips is formed
Line copper sheath, with a thickness of 0.4-0.7mm.
7. mineral insulated cable according to claim 1, which is characterized in that the cable core is at least 3 copper conductors.
8. mineral insulated cable according to claim 7, which is characterized in that the cable core is 3 copper conductors.
9. mineral insulated cable according to claim 1, which is characterized in that the insulating layer is Inorganic synthese mica tape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820900251.9U CN208637167U (en) | 2018-06-11 | 2018-06-11 | A kind of mineral insulated cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820900251.9U CN208637167U (en) | 2018-06-11 | 2018-06-11 | A kind of mineral insulated cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208637167U true CN208637167U (en) | 2019-03-22 |
Family
ID=65733484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820900251.9U Active CN208637167U (en) | 2018-06-11 | 2018-06-11 | A kind of mineral insulated cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208637167U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112820455A (en) * | 2021-04-19 | 2021-05-18 | 江苏中天科技股份有限公司 | Low-noise flexible cable and manufacturing method thereof |
| CN117012450A (en) * | 2023-08-29 | 2023-11-07 | 广东广深电缆有限公司 | Anti-interference flame-retardant cable |
-
2018
- 2018-06-11 CN CN201820900251.9U patent/CN208637167U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112820455A (en) * | 2021-04-19 | 2021-05-18 | 江苏中天科技股份有限公司 | Low-noise flexible cable and manufacturing method thereof |
| CN112820455B (en) * | 2021-04-19 | 2021-07-16 | 江苏中天科技股份有限公司 | Low-noise flexible cable and manufacturing method thereof |
| CN117012450A (en) * | 2023-08-29 | 2023-11-07 | 广东广深电缆有限公司 | Anti-interference flame-retardant cable |
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