CN206893347U - A kind of midium voltage cable - Google Patents
A kind of midium voltage cable Download PDFInfo
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- CN206893347U CN206893347U CN201720880050.2U CN201720880050U CN206893347U CN 206893347 U CN206893347 U CN 206893347U CN 201720880050 U CN201720880050 U CN 201720880050U CN 206893347 U CN206893347 U CN 206893347U
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- coated
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- shielding layer
- voltage cable
- protective layer
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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
Abstract
The utility model provides a kind of midium voltage cable; belong to field of cables; including conductor, internal shield, insulating barrier, external shielding layer and protective layer; internal shield is coated on conductor; insulating barrier is coated on internal shield, and external shielding layer is coated on insulating barrier, and protective layer is coated on external shielding layer; conductor includes multiple scallops, and multiple scallops form loop configuration.Conductor is made up of multiple scallops, is had preferable flexibility, is easy to the laying of cable, multiple scallops directly contact composition conductor, and synthesis technique is simple, good economy performance.
Description
Technical field
Field of cables is the utility model is related to, in particular to a kind of midium voltage cable.
Background technology
Cable is a kind of wire that electric power is transferred to another place at one.The most common are low tension in daily life
Cable, for transmitting the electric power of low voltage.But with the continuous development of domestic city, economy increases rapidly, many skyscrapers
Emerge in multitude, if being transmitted electric power using low-voltage cable, cable dosage, laying difficulty and workload are larger, Er Qiegeng
Take space.Power transmission is carried out using midium voltage cable, material had not only been saved but also had saved.
In midium voltage cable, conductor is the carrier for transmitting electric current, i.e., electric current is transferred into the other end from one end of conductor.Mesh
Before, conductor is generally solid construction, and when cross-sectional area of conductor is excessive, the flexibility of conductor is poor, causes cable not flexible, inconvenience
In the laying of cable.
Utility model content
The purpose of this utility model is to provide a kind of midium voltage cable, to improve above mentioned problem.
What the utility model was realized in：
The utility model provides a kind of midium voltage cable, including conductor, internal shield, insulating barrier, external shielding layer and protective layer,
Internal shield is coated on conductor, and insulating barrier is coated on internal shield, and external shielding layer is coated on insulating barrier, protective layer cladding
In on external shielding layer, conductor includes multiple scallops, and multiple scallops form loop configuration.
Preferably, scallop is 3.
Preferably, internal shield includes conductor shield and the first semi-conductive shield, the first semi-conductive shield cladding
In on conductor shield.
Preferably, external shielding layer includes insulation screen and the second semi-conductive shield, the second semi-conductive shield cladding
In on insulation screen.
Preferably, protective layer includes inner protective layer, armor and external protection, and armor is coated on inner protective layer, outside
Protective layer is coated on armor.
Preferably, armor includes more zinc-coated wires, and more zinc-coated wires are mutually twisted and are wrapped on inner protective layer.
Preferably, inner protective layer is the wrapped polypropylene tape on external shielding layer.
Preferably, external protection is the wrapped fire retardant polyolefin layer on armor.
Preferably, midium voltage cable also includes twining package tape, and twining package tape is coated on external shielding layer, and protective layer is coated on twining package tape
On.
Preferably, midium voltage cable also includes copper strip shielding layer, and copper strip shielding layer is coated on external shielding layer, twining package tape cladding
In on copper strip shielding layer.
The beneficial effects of the utility model are：
A kind of midium voltage cable provided by the utility model, conductor are made up of multiple scallops, have preferable flexibility, just
In the laying of cable, multiple scallops directly contact composition conductor, and synthesis technique is simple, good economy performance.It is in addition, more in conductor
Individual scallop forms loop configuration, increases the surface area of whole conductor, and the ability of conductor flow overcurrent greatly improves.
Brief description of the drawings
, below will be to required use in embodiment in order to illustrate more clearly of the technical scheme of the utility model embodiment
Accompanying drawing be briefly described, it will be appreciated that the following drawings illustrate only some embodiments of the present utility model, therefore should not be by
Regard the restriction to scope as, for those of ordinary skill in the art, on the premise of not paying creative work, may be used also
To obtain other related accompanying drawings according to these accompanying drawings.
Fig. 1 is the structural representation for the midium voltage cable that the utility model embodiment 1 provides；
Fig. 2 is the structural representation of the conductor for the midium voltage cable that the utility model embodiment 1 provides；
Fig. 3 is the structural representation for the midium voltage cable that the utility model embodiment 2 provides；
Fig. 4 is the structural representation for the midium voltage cable that the utility model embodiment 3 provides.
Reference is in figure：
Conductor 100；Scallop 110；Internal shield 200；Conductor shield 210；First semi-conductive shield 220；Insulation
Layer 300；External shielding layer 400；Insulation screen 410；Second semi-conductive shield 420；Protective layer 500；Inner protective layer 510；Armour
Fill layer 520；Zinc-coated wire 521；External protection 530；Twining package tape 600；Copper strip shielding layer 700.
Embodiment
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer
Accompanying drawing in type embodiment, the technical scheme in the embodiment of the utility model is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model part of the embodiment, rather than whole embodiments.Generally here described in accompanying drawing and
The component of the utility model embodiment shown can be configured to arrange and design with a variety of.
Therefore, the detailed description of the embodiment of the present utility model to providing in the accompanying drawings is not intended to limit requirement below
The scope of the utility model of protection, but it is merely representative of selected embodiment of the present utility model.Based in the utility model
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, all
Belong to the scope of the utility model protection.
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the utility model can
To be mutually combined.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent accompanying drawing in individual accompanying drawing.
, it is necessary to explanation, the orientation or position relationship of the instruction such as term " interior ", " outer " in description of the present utility model
For based on orientation shown in the drawings or position relationship, or the utility model product using when the orientation or position usually put
Relation, or the orientation that usually understands of those skilled in the art or position relationship, or when the utility model product uses
The orientation or position relationship usually put, it is for only for ease of description the utility model and simplifies description, rather than instruction or dark
Show that the device of meaning or element there must be specific orientation, with specific azimuth configuration and operation, thus it is it is not intended that right
Limitation of the present utility model.In addition, term " first ", " second " are only used for distinguishing description, and it is not intended that instruction or hint
Relative importance.
In description of the present utility model, it is also necessary to which explanation, unless otherwise clearly defined and limited, term " are set
Put ", " installation ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integratedly
Connection；Can be directly connected to, can also be indirectly connected with by intermediary.For the ordinary skill in the art,
Concrete meaning of the above-mentioned term in the utility model can be understood with concrete condition.
Embodiment 1, reference picture 1, Fig. 2
As shown in figure 1, the present embodiment provides a kind of midium voltage cable, including conductor 100, internal shield 200, insulating barrier 300,
External shielding layer 400 and protective layer 500, internal shield 200 are coated on conductor 100, and insulating barrier 300 is coated on internal shield 200
On, external shielding layer 400 is coated on insulating barrier 300, and protective layer 500 is coated on external shielding layer 400, and conductor 100 includes multiple
Scallop 110, multiple scallops 110 form loop configuration.
Wherein, conductor 100 is the carrier of transmission electric power, and electric current is from one end of conductor 100 to the mistake of the other end of conductor 100
Journey is power transmission process.Conductor 100 is made up of multiple scallops 110, has preferable crooking ability, is easy to applying for cable
If.After scallop 110 is separately fabricated, it is fixed, is made by internal shield 200 after mutually being contradicted between multiple scallops 110
All the time fit-state is between multiple scallops 110, ensures that it has stable transmission performance.Certainly, scallop 110 is not easy
Excessively, scallop 110 is excessive, and the connection between scallop 110 and internal shield 200 is more difficult.Therefore, in the present embodiment, such as Fig. 2
It is shown, on the premise of ensureing that conductor 100 has preferable bending property, it is preferable that the scallop 110 in conductor 100 is set
For 3, i.e., the central angle of each scallop 110 is 120 degree.3 scallops 110 form loop configuration, i.e. conductor 100 after splicing
For hollow structure, this configuration increases the surface area of whole conductor 100, the ability that conductor 100 flows through electric current will greatly improve.
The material of conductor 100 is copper, aluminium, silver etc., is mostly copper or aluminium in daily life.In the present embodiment, conductor 100 is
Copper conductor.Insulating barrier 300 is coated on outside conductor 100, and it is isolation conductor 100 that it, which is acted on, bears corresponding voltage, prevents electric current from letting out
Leakage.Insulating barrier 300 is crosslinked polyethylene material, and this material has good insulating properties and excellent heat resistance, 300
It will not decompose and be carbonized below degree, Long-term service temperature is up to 90 degree, and the thermal life was up to 40 years.
Because conductor 100 is that 3 scallops 110 are formed, if conductor 100 is directly connected with insulating barrier 300, between the two easily
Air gap is formed, electric field can be caused to concentrate.Therefore, internal shield 200, internal shield are provided between conductor 100 and insulating barrier 300
200 can with the good contact of insulating barrier 300, so as to avoid that shelf depreciation occurs between conductor 100 and insulating barrier 300.Certainly, it is interior
Screen layer 200 can also limit the interference in caused electric field and magnetic field in electric current transmitting procedure.
In the present embodiment, internal shield 200 includes the semi-conductive shield 220 of conductor shield 210 and first, and the first half lead
Body screen layer 220 is coated on conductor shield 210.Using the conductor shield 210 of conductor shield 210 and first simultaneously to leading
Body 100 is shielded, and is had preferably shielding electric field and magnetic field ability, effectively external device can be avoided to be disturbed by cable.
Wherein, conductor shield 210 is copper strips.For cable in normal transmission, conductor shield 210 can ensure the positive normal open of capacitance current
Cross；When system occurs short-circuit, conductor shield 210 can be as the passage of short circuit current, while also functions to the work of shielding electric field
With.
Equally, if insulating barrier 300 is directly connected to protective layer 500, the surface of insulating barrier 300 and the contact position of protective layer 500
Air gap is there may be, easily causes shelf depreciation.Therefore external shielding layer 400 is provided between insulating barrier 300 and protective layer 500, from
And avoid that shelf depreciation occurs between insulating barrier 300 and protective layer 500.Certainly, external shielding layer 400 equally can also limit electric current biography
Caused electric field and magnetic interference during defeated.
In the present embodiment, external shielding layer 400 includes the semi-conductive shield 420 of insulation screen 410 and second, and the second half lead
Body screen layer 420 is coated on insulation screen 410.Using the conductor shield 210 of insulation screen 410 and first simultaneously to leading
Body 100 is shielded, and can further be lifted the ability in shielding electric field and magnetic field, effectively external device can be avoided to be done by cable
Disturb.When the builtin voltage of conductor 100 is too high, the first semi-conductive shield 220 and the second semi-conductive shield 420 may also function as
Change the effect of electric field, even if the electric field inside insulating barrier 300 tends to be uniform as far as possible, so as to improve and provide insulation efficiency, extend
The service life of cable.
In whole cable, conductor 100 is located at innermost layer, and protective layer 500 is located at outermost layer, and protective layer 500 primarily serves
Protective effect.In the present embodiment, protective layer 500 includes inner protective layer 510, armor 520 and external protection successively from the inside to the outside
530.That is, armor 520 is coated on inner protective layer 510, external protection 530 is coated on armor 520.
Wherein, the effect of armor 520 is to protect cable not damaged by external force.Armor 520 is by more zinc-coated wires 521
Form, more zinc-coated wires 521 are mutually twisted and are wrapped on inner protective layer 510, and it is stronger that this structure has whole cable
Tensile strength, ensure cable will not be destroyed in laid processes by extraneous factor.Armor 520 is by multiple zinc-coated wires
521 are formed, and zinc-coated wire 521 can be grounded, and play a part of protecting cable.
Zinc-coated wire 521 in armor 520 can produce larger external force in stranding process, easily to external shielding layer
400 damage, and therefore, inner protective layer 510 can be set in armor 520, inner protective layer 510 can rise to external shielding layer 400
To protective effect, the normal use characteristic of guarantee external shielding layer 400.Several sides such as inner protective layer 510 extrudes, wrapped and vertical bag
Formula, the material of inner protective layer 510 are also varied, it is contemplated that the economy of cable, in the present embodiment, it is preferable that inner protective layer
510 material is polypropylene tape, is wrapped in by wrapped mode on the second semi-conductive shield 420 in external shielding layer 400.
External protection 530 is the outermost layer in cable, and after cable laying, external protection 530 may be directly exposed in the external world,
Therefore, external protection 530 should have certain corrosion-resistant, flame resistance.In the present embodiment, external protection 530 is fire-retardant polyene
Hydrocarbon material, this material corrosion resistance ability is strong, has preferable flame resistance.This cable can be within a certain period of time when generation or calamity
Electric power is provided for equipment, guarantee is provided for the personnel escape in fire.
A kind of midium voltage cable provided by the utility model, conductor 100 are the carrier of transmission electric power；Internal shield 200 and outer
Screen layer 400 can effectively shield caused electric field and magnetic field during power transmission；Insulating barrier 300 is used to completely cut off conductor 100, holds
By corresponding voltage, current leakage is placed；Protective layer 500 plays a protective role to whole cable, has cable preferably anti-
Tensile strength, cable are not easily susceptible to external force destruction, meanwhile, also cause cable that there is preferable corrosion resistance and fire resistance.Wherein, lead
Body 100 is made up of 3 scallops 110, has preferable flexibility, is easy to the laying of cable, and multiple scallops 110 directly contact
Conductor is formed, synthesis technique is simple, good economy performance.In addition, 3 fan-shaped composition loop configuration in conductor 100, are increased whole
The surface area of conductor 100, the ability that conductor 100 flows through electric current will greatly improve.
Embodiment 2, reference picture 3
A kind of midium voltage cable that the utility model embodiment is provided, its realization principle and caused technique effect and foregoing
Embodiment of the method is identical, and to briefly describe, device embodiment part does not refer to part, refers to corresponding in preceding method embodiment
Content.
In above-described embodiment, the refractory ability of cable depends on the fire resistance of outermost external protection 530.External protection
After 530 burn, conductor 100 can be destroyed quickly, cause power Transmission to be interrupted.
Therefore, in the present embodiment, further to improve the fire resistance of cable, twining package tape 600 is additionally provided with cable, around
Band 600 is located between the inner protective layer 510 in the second semi-conductive shield 420 and protective layer 500 in external shielding layer 400, i.e.,
Twining package tape 600 is coated on the second semi-conductive shield 420 in external shielding layer 400, the inner protective layer in inner protective layer 510
510 are coated on twining package tape 600.Twining package tape 600 is mica tape, has preferable fire resistance.
A kind of midium voltage cable that the present embodiment provides, after setting twining package tape 600 in cable, cable can be subjected to longer in fire
Time, the longer electricity consumption time is provided to escape personnel.Twining package tape 600 is mica tape, has resistant to elevated temperatures characteristic, also simultaneously
Insulating effect can be played, can ensure that conductor 100 being capable of conductive time enough in a fire.
Remaining structure of the present embodiment is same as Example 1, will not be repeated here.
Embodiment 3, reference picture 4
It can produce electric field and magnetic field around when conductor 100 in cable passes through electric current, in embodiment 2, the external screen in cable
Cover layer 400 and internal shield 200 has certain screening ability to electric field and magnetic field.In the present embodiment, further to improve
To electric field and the screening ability in magnetic field, copper strip shielding layer 700 is additionally provided with cable, copper strip shielding layer 700 is located at external shielding layer 400
In the second semi-conductive shield 420 and twining package tape 600 between, i.e., copper strip shielding layer 700 is coated on the second semi-conductive shield 420
On, twining package tape 600 is wrapped to be coated on copper strip shielding layer 700.
Attenuation by absorption and the reflection loss to electromagnetic wave are come to the shielding mechanism of electric field and magnetic field, is come for midium voltage cable
Say preferable by the way of radiation damping, and copper strip shielding has preferable reflection loss effect just.
A kind of midium voltage cable that the present embodiment provides, copper strip shielding layer 700 is provided with cable, further enhancing cable
Anti- electric field, magnetic interference ability.
Remaining structure of the present embodiment is same as Example 2, will not be repeated here.
Preferred embodiment of the present utility model is these are only, is not limited to the utility model, for this area
Technical staff for, the utility model can have various modifications and variations.It is all within the spirit and principles of the utility model,
Any modification, equivalent substitution and improvements made etc., should be included within the scope of protection of the utility model.
Claims (10)
1. a kind of midium voltage cable, it is characterised in that described including conductor, internal shield, insulating barrier, external shielding layer and protective layer
Internal shield is coated on the conductor, and the insulating barrier is coated on the internal shield, and the external shielding layer is coated on institute
State on insulating barrier, the protective layer is coated on the external shielding layer, and the conductor includes multiple scallops, the multiple sector
Portion forms loop configuration.
2. midium voltage cable according to claim 1, it is characterised in that the scallop is 3.
3. midium voltage cable according to claim 1, it is characterised in that the internal shield includes conductor shield and first
Semi-conductive shield, first semi-conductive shield are coated on the conductor shield.
4. midium voltage cable according to claim 3, it is characterised in that the external shielding layer includes insulation screen and second
Semi-conductive shield, second semi-conductive shield are coated on the insulation screen.
5. according to the midium voltage cable described in claim any one of 1-4, it is characterised in that the protective layer include inner protective layer,
Armor and external protection, the armor are coated on the inner protective layer, and the external protection is coated on the armor
On.
6. midium voltage cable according to claim 5, it is characterised in that the armor includes more zinc-coated wires, described
More zinc-coated wires are mutually twisted and are wrapped on the inner protective layer.
7. midium voltage cable according to claim 5, it is characterised in that the inner protective layer is wrapped in the external shielding layer
On polypropylene tape.
8. midium voltage cable according to claim 5, it is characterised in that the external protection is wrapped on the armor
Fire retardant polyolefin layer.
9. midium voltage cable according to claim 1, it is characterised in that medium pressure cable also includes twining package tape, it is described around
Band is coated on the external shielding layer, and the protective layer is coated on the twining package tape.
10. midium voltage cable according to claim 9, it is characterised in that medium pressure cable also includes copper strip shielding layer, institute
State copper strip shielding layer to be coated on the external shielding layer, the twining package tape is coated on the copper strip shielding layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720880050.2U CN206893347U (en) | 2017-07-19 | 2017-07-19 | A kind of midium voltage cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720880050.2U CN206893347U (en) | 2017-07-19 | 2017-07-19 | A kind of midium voltage cable |
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| Publication Number | Publication Date |
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| CN206893347U true CN206893347U (en) | 2018-01-16 |
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ID=61296889
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720880050.2U Active CN206893347U (en) | 2017-07-19 | 2017-07-19 | A kind of midium voltage cable |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110265188A (en) * | 2019-07-23 | 2019-09-20 | 清华四川能源互联网研究院 | A kind of oil gas underground work cable |
| WO2020051926A1 (en) * | 2018-09-12 | 2020-03-19 | 淄博齐鼎立专利信息咨询有限公司 | Anti-signal-interference shielded cable and manufacturing method thereof |
| CN114709008A (en) * | 2021-12-24 | 2022-07-05 | 安波福电气系统有限公司 | Conductor cable and method of forming the same |
-
2017
- 2017-07-19 CN CN201720880050.2U patent/CN206893347U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020051926A1 (en) * | 2018-09-12 | 2020-03-19 | 淄博齐鼎立专利信息咨询有限公司 | Anti-signal-interference shielded cable and manufacturing method thereof |
| CN110265188A (en) * | 2019-07-23 | 2019-09-20 | 清华四川能源互联网研究院 | A kind of oil gas underground work cable |
| CN114709008A (en) * | 2021-12-24 | 2022-07-05 | 安波福电气系统有限公司 | Conductor cable and method of forming the same |
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