CN203607151U - Aluminum-alloy-conductor variable frequency cable - Google Patents
Aluminum-alloy-conductor variable frequency cable Download PDFInfo
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- CN203607151U CN203607151U CN201320863298.XU CN201320863298U CN203607151U CN 203607151 U CN203607151 U CN 203607151U CN 201320863298 U CN201320863298 U CN 201320863298U CN 203607151 U CN203607151 U CN 203607151U
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Abstract
The utility model provides an aluminum-alloy-conductor variable frequency cable, comprising a cable core assembly. The cable core assembly comprises three phase lines and three ground lines, each of which is formed by an aluminum alloy line core and an insulating layer closely wrapping the periphery of the line core. The aluminum alloy line core has a circular cross section. The area of the cross section of the ground lines is smaller than that of the cross section of the phase lines. The three phase lines and the three ground lines are such arranged that viewing from the direction of the cross section, the three phase lines are connected with each other, the three ground lines are disposed at the outer sides of the three phase lines, and each ground line is connected with the two adjacent phase lines. The aluminum-alloy-conductor variable frequency cable also comprises a metal shielding layer, an inner sheath, a metal armour and an outer sheath which wrap the cable core assembly from inside to outside. The aluminum-alloy-conductor variable frequency cable of the utility model, which is formed to have such a structure, has the advantages of good bending performance, light weight and low cost, meanwhile achieves excellent shielding performance and is safe and reliable to use.
Description
Technical field
The utility model relates to a kind of aluminium alloy conductor frequency-changing cable.
Background technology
The energy-saving effect of converter plant is fairly obvious, adopts frequency control motor in heavy-duty motor, and whole generating set can economize on electricity 30%.And after use frequency control, realized the soft start of motor, made machine operation steady, motor bearings wearing and tearing reduce, and have extended motor useful life and maintenance period.Therefore, variable-frequency control technique has obtained using widely in industrial aspect such as oil, metallurgy, generating, railway, mines.
In the prior art, known a kind of frequency-changing cable, be mainly used in connecting between variable frequency power supply and variable-frequency motor the cable of use, and in rated voltage 1KV and following electric line, be used as transmission of electric energy, be particularly useful for the industries such as papermaking, metallurgy, metal processing, mine, railway and food processing.
The structure of frequency-changing cable comprises three phase line insulated wires, three ground wire insulated wires; set gradually band lapping layer, copper strips layer, outer lapping layer and external sheath layer outward at phase line insulated wire and ground wire insulated wire; form 3+3 core structure; make cable there is stronger proof voltage impact; pulse voltage can stand at a high speed frequent frequency conversion time, plays a good protection to frequency conversion electrical equipment.
At present conventional frequency-changing cable is to adopt copper conductor and adopt steel-tape armouring or the 3+3 structure with armouring not mostly.Meanwhile, in order to meet bending property, what adopt now is that 5 class conductors (GB3956) are realized., there is following shortcoming in the frequency-changing cable using copper as conductor: copper conductor cost is high, adopts 5 class conductors, processed complex and long in time limit for meeting bending property.
Utility model content
Task of the present utility model is, a kind of aluminium alloy conductor frequency-changing cable is provided, with overcome in prior art copper conductor frequency-changing cable cost high, adopt after shielding construction and be not easy bending, the shortcomings such as inconvenience are installed.
An aspect of the present utility model provides a kind of aluminium alloy conductor frequency-changing cable, comprises cable core assembly, and this cable core assembly comprises: three phase lines and three ground wires, and phase line and ground wire are all made up of aluminium alloy core and the insulating barrier that is closely coated on core periphery; The cross section of this aluminium alloy core is rounded; The cross-sectional area of ground wire is less than the cross-sectional area of phase line; Wherein, three phase lines and arranging of three ground wires are that, from its cross-sectional direction, three phase lines abut one another; Three ground wires are arranged at the outside of three phase lines and every ground wire, and the phase line adjacent with two is adjacent respectively; And from inside to outside metal screen layer, inner sheath, metal armouring and the oversheath of coated cable core assembly successively.
The aluminium alloy cable with above-mentioned structure, tool has the following advantages: because aluminium alloy cable is low than copper cable bounce-back property, is more conducive to guarantee to compress the tightness degree of terminal junction, keeps the stability that connects under long-term use state, safe; Because it is lightweight, construction is got up also very quick again; Meanwhile, because it is corrosion-resistant, aluminium alloy conductor frequency-changing cable can be for outdoor study; Especially, because its cost is low, the copper conductor frequency-changing cable of the same size of comparing can be saved purchase cost approximately 40%.
Preferably, metal screen layer is entwined twist by copper strips.
Adopt such structure, formed the dual shield of copper strips turnkey shielding with aluminium alloy armored, guaranteed the shield effectiveness that frequency-changing cable is better.
Preferably, metal screen layer is entwined twist by copper wire.
Adopt such structure, formed the dual shield of the shielding of copper wire turnkey and aluminium alloy armored, when having guaranteed the good shield effectiveness of frequency-changing cable, also obtained better bending property.
Preferably, metal screen layer is formed by the many netted braidings of copper wire.
Adopt such structure, formed the dual shield of the shielding of copper wire turnkey and aluminium alloy armored, because the screen of the netted establishment of copper wire is wound around more closely reliably than copper wire, guaranteed frequency-changing cable more reliable shield effectiveness and better bending property.
Further, this aluminium alloy core is fan-shaped aluminium alloy conductor by many cross sections and is longitudinally that twisted shape is stranded to be formed; From its cross-sectional direction, the central area of aluminium alloy core is rounded, is multi-layer annular outside central area, and seamless amalgamation between the aluminium alloy conductor in circle and annular is also seamless amalgamation between circle and annular and between every layer of annular.
Adopt such structure, stranded aluminium alloy conductor (2 class conductors, GB3956) is due to its good bending property, and bending radius is the external diameter of 7 times, the bending radius of general copper is the external diameter of 10～20 times, therefore it can reach the bending property of existing 5 class conductors (GB3956).
Further, on the insulating barrier of described three phase lines and three ground wires, be coated with respectively copper strips or shielding layer of copper wires.
Adopt such structure, combine by phase-splitting shielding and turnkey shielding, improved better the shielding of aluminum alloy conductor cable, there is good anti-interference and low radiance.
Preferably, between metal screen layer and cable core assembly, be provided with band lapping layer.
Preferably, metal armouring is the interlocking type armouring that single aluminum alloy strip spirality is entwined.
Above-mentioned interlocking type armouring, the cross section of its single aluminum alloy strip has curved arch section and is arranged on the extension of this arch section one end, this extension extends towards the direction away from arch section and towards protrusion one side of this arch section, in the time that single aluminum alloy strip is wrapped in cable core assembly periphery formation metal armouring, free end of the extension of the other end of the arch section of the aluminum alloy strip that winding cable core assembly one encloses and another adjacent circle aluminum alloy strip fastens interlocking.
Have the metal armouring of this spline structure by employing, can make cable in having good bending property, guaranteed the shock resistance of cable by simple structure, and improved rigidity and the resistance to wear of cable, shield effectiveness is good.
Preferably, inner sheath and oversheath are that polyvinyl chloride is made.
Adopt such material, improved the heatproof weather resistance of aluminium alloy conductor frequency-changing cable.
Another aspect of the present utility model provides another kind of aluminium alloy conductor frequency-changing cable, comprise cable core assembly, cable core assembly comprises: three phase lines and three ground wires, and phase line and ground wire are all made up of aluminium alloy core and the insulating barrier that is closely coated on core periphery; The cross section of aluminium alloy core is rounded; The cross-sectional area of ground wire is less than the cross-sectional area of phase line; Wherein, three phase lines and arranging of three ground wires are that, from its cross-sectional direction, three phase lines abut one another; Three ground wires are arranged at the outside of three phase lines and every ground wire, and the phase line adjacent with two is adjacent respectively; On the insulating barrier of three phase lines and three ground wires, be coated with respectively copper strips or shielding layer of copper wires; And from inside to outside inner sheath, metal armouring and the oversheath of coated cable core assembly successively.
Adopt such structure, by the dual shield of phase-splitting shielding and aluminium alloy armored, guaranteed preferably shield effectiveness of frequency-changing cable, be applicable to the occasion that the bending property of frequency-changing cable is had relatively high expectations.
The following object disclosing according to the utility model, effect, and structural configuration, enumerate preferred embodiment, and coordinate accompanying drawing to describe in detail.
Accompanying drawing explanation
Fig. 1 is according to the sectional view of the aluminium alloy conductor frequency-changing cable of first, second, third embodiment of the present utility model;
Fig. 2 is according to the sectional view of the aluminium alloy conductor frequency-changing cable of the 4th embodiment of the present utility model;
Fig. 3 A is according to interlocking metal armoring schematic diagram of the present utility model;
Fig. 3 B is according to interlocking metal armoring sectional view of the present utility model;
Fig. 4 is according to the sectional view of aluminium alloy core of the present utility model;
Fig. 5 is according to the sectional view of the aluminium alloy conductor frequency-changing cable of the 5th embodiment of the present utility model.
Embodiment
The state of structural configuration of the present utility model, and use for convenience of description, following embodiment describes preferred embodiment of the present utility model with reference to the accompanying drawings.
As shown in Figure 1, comprise cable core assembly according to the aluminium alloy conductor frequency-changing cable of the first embodiment of the present utility model, this cable core assembly comprises: three phase lines 1 and three ground wires 2, and phase line 1 and ground wire 2 are all made up of aluminium alloy core 3 and the insulating barrier 4 that is closely coated on aluminium alloy core 3 peripheries; The cross section of this aluminium alloy core 3 is rounded; The cross-sectional area of ground wire 2 is less than the cross-sectional area of phase line 1; Wherein, three phase lines 1 and arranging of three ground wires 2 are that, from its cross-sectional direction, three phase lines 1 abut one another; Three ground wires 2 are arranged at the outside of three phase lines 1 and every ground wire 2, and the phase line 1 adjacent with two is adjacent respectively.
This aluminium alloy conductor frequency-changing cable also comprises: the metal screen layer 5, inner sheath 6, metal armouring 7 and the oversheath 8 that are from inside to outside coated successively cable core assembly.
The aluminium alloy cable with above-mentioned structure, tool has the following advantages: because aluminium alloy cable is low than copper cable bounce-back property, is more conducive to guarantee to compress the tightness degree of terminal junction, keeps the stability that connects under long-term use state, safe; Because it is lightweight, construction is got up also very quick again; Meanwhile, because it is corrosion-resistant, aluminium alloy conductor frequency-changing cable can be for outdoor study; Especially, because its cost is low, the copper conductor frequency-changing cable of the same size of comparing can be saved purchase cost approximately 40%.
In the first embodiment of the present utility model, metal screen layer 5 is entwined twist by copper strips.When winding, make each circle copper strips and adjacent turn have part overlapping, to guarantee there is not gap between every circle copper strips.
Adopt such structure, formed the dual shield of copper strips turnkey shielding with aluminium alloy armored, guaranteed the shield effectiveness that frequency-changing cable is better.
Between metal screen layer 5 and cable core assembly, be provided with band lapping layer 9.In the present embodiment, band lapping layer 9 is formed by paper tape winding cable core assembly.
As shown in Figure 3A, the interlocking type armouring that metal armouring 7 is entwined for single aluminum alloy strip spirality.As shown in Figure 3 B, this interlocking type armouring 7, the cross section of its single aluminum alloy strip has curved arch section 71 and is arranged on the extension 72 of this arch section one end, this extension 72 extends towards the direction away from arch section 71 and towards protrusion one side of this arch section 71, in the time that single aluminum alloy strip is wrapped in cable core assembly periphery formation metal armouring 7, free end of the extension 72 of the other end of the arch section 71 of the aluminum alloy strip that winding cable core assembly one encloses and another adjacent circle aluminum alloy strip fastens interlocking.
Have the metal armouring 7 of this spline structure by employing, can make cable in having good bending property, guaranteed the shock resistance of cable by simple structure, and improved rigidity and the resistance to wear of cable, shield effectiveness is good.
As shown in Figure 4, this aluminium alloy core 3 is fan-shaped aluminium alloy conductor by many cross sections and is longitudinally that twisted shape is stranded to be formed; From its cross-sectional direction, the central area of aluminium alloy core 3 is rounded 31, the circular 31 outer multi-layer annulars 32 that are, circular 31 and annular 32 in aluminium alloy conductor between seamless amalgamation, circular 31 and annular 32 between and between every layer of annular 32, be also seamless amalgamation.
Adopt such structure, stranded aluminium alloy conductor (2 class conductors, GB3956) is due to its good bending property, and bending radius is the external diameter of 7 times, the bending radius of general copper is the external diameter of 10～20 times, therefore it can reach the bending property of existing 5 class conductors (GB3956).
According to the second embodiment of the present utility model, the parts different from above-mentioned the first embodiment are, metal screen layer 5 is entwined twist by copper wire.
Adopt such structure, formed the dual shield of the shielding of copper wire turnkey and aluminium alloy armored, when having guaranteed the good shield effectiveness of frequency-changing cable, also obtained better bending property.
According to the 3rd embodiment of the present utility model, the parts different from above-mentioned each embodiment are, metal screen layer 5 is formed by the many netted braidings of copper wire.
Adopt such structure, formed the dual shield of the shielding of copper wire turnkey and aluminium alloy armored, because the screen of the netted establishment of copper wire is wound around more closely reliably than copper wire, guaranteed frequency-changing cable more reliable shield effectiveness and better bending property.
As shown in Figure 2, according to the 4th embodiment of the present utility model, the parts different from above-mentioned each embodiment are, are coated with respectively independent metal screen layer 10, as copper strips or shielding layer of copper wires on the insulating barrier 4 of three phase lines 1 and three ground wires 2.
Adopt such structure, combine by phase-splitting shielding and turnkey shielding, improved better the shielding of aluminum alloy conductor cable, there is good anti-interference and low radiance.
As shown in Figure 5, according to the 5th embodiment of the present utility model, the parts different from above-mentioned the 4th embodiment are, only on the insulating barrier 4 of three phase lines 1 and three ground wires 2, be coated with respectively independent metal screen layer 10, as copper strips or shielding layer of copper wires, and in the periphery of three phase lines 1 and three ground wires 2, the metal screen layer 5 that is coated cable core assembly is not set.That is, the cable phase-splitting shielding and the aluminium alloy armored that in this embodiment, provide, and there is no to adopt the turnkey shielding as above-described embodiment.Adopt such structure, by the dual shield of phase-splitting shielding and aluminium alloy armored, guaranteed preferably shield effectiveness of frequency-changing cable, be applicable to the occasion that the bending property of frequency-changing cable is had relatively high expectations.
More than preferred embodiment of the present utility model and accompanying drawing, only have preferred embodiment and accompanying drawing to be illustrated, not for limiting the interest field of the utility model technology, all interest fields being contained with identical technological means or for following claim content are implemented, and all do not depart from category of the present utility model but applicant's interest field.
For example, in above-mentioned each embodiment of the present utility model, metal armouring 7 can adopt other armouring such as the S-shaped self-locking type of aluminum alloy strip cross section or other metal material, band lapping layer 9, insulating barrier 4, inner sheath 6 and oversheath 8 etc. can adopt other kin material, those skilled in the art can select other material according to actual needs, as long as can reach normal application target.
Claims (10)
1. an aluminium alloy conductor frequency-changing cable, is characterized in that, comprising:
Cable core assembly, described cable core assembly comprises: three phase lines and three ground wires, described phase line and ground wire are all made up of aluminium alloy core and the insulating barrier that is closely coated on described core periphery; The cross section of described aluminium alloy core is rounded; The cross-sectional area of described ground wire is less than the cross-sectional area of described phase line;
Wherein, described three phase lines and arranging of three ground wires are that, from its cross-sectional direction, described three phase lines abut one another; Described three ground wires are arranged at the outside of three phase lines and every ground wire, and the phase line adjacent with two is adjacent respectively;
And from inside to outside metal screen layer, inner sheath, metal armouring and the oversheath of coated described cable core assembly successively.
2. aluminium alloy conductor frequency-changing cable as claimed in claim 1, is characterized in that, described metal screen layer is entwined twist by copper strips.
3. aluminium alloy conductor frequency-changing cable as claimed in claim 1, is characterized in that, described metal screen layer is entwined twist by copper wire.
4. aluminium alloy conductor frequency-changing cable as claimed in claim 1, is characterized in that, described metal screen layer is formed by the many netted braidings of copper wire.
5. the aluminium alloy conductor frequency-changing cable as described in arbitrary claim in claim 1 to 4, is characterized in that, described aluminium alloy core is fan-shaped aluminium alloy conductor by many cross sections and is longitudinally that twisted shape is stranded to be formed; From its cross-sectional direction, the central area of described aluminium alloy core is rounded, outside described central area, be multi-layer annular, seamless amalgamation between the aluminium alloy conductor in described circle and described annular, between described circle and described annular and be also seamless amalgamation between described every layer of annular.
6. aluminium alloy conductor frequency-changing cable as claimed in claim 5, is characterized in that, on the insulating barrier of described three phase lines and three ground wires, is coated with respectively copper strips or shielding layer of copper wires.
7. aluminium alloy conductor frequency-changing cable as claimed in claim 6, is characterized in that, between described metal screen layer and described cable core assembly, is provided with band lapping layer.
8. aluminium alloy conductor frequency-changing cable as claimed in claim 7, is characterized in that, described metal armouring is the interlocking type armouring that single aluminum alloy strip spirality is entwined.
9. aluminium alloy conductor frequency-changing cable as claimed in claim 8, is characterized in that, described inner sheath and oversheath are that polyvinyl chloride is made.
10. an aluminium alloy conductor frequency-changing cable, is characterized in that, comprising:
Cable core assembly, described cable core assembly comprises: three phase lines and three ground wires, described phase line and ground wire are all made up of aluminium alloy core and the insulating barrier that is closely coated on described core periphery; The cross section of described aluminium alloy core is rounded; The cross-sectional area of described ground wire is less than the cross-sectional area of described phase line;
Wherein, described three phase lines and arranging of three ground wires are that, from its cross-sectional direction, described three phase lines abut one another; Described three ground wires are arranged at the outside of three phase lines and every ground wire, and the phase line adjacent with two is adjacent respectively; On the insulating barrier of described three phase lines and three ground wires, be coated with respectively copper strips or shielding layer of copper wires;
And from inside to outside inner sheath, metal armouring and the oversheath of coated described cable core assembly successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320863298.XU CN203607151U (en) | 2013-12-17 | 2013-12-17 | Aluminum-alloy-conductor variable frequency cable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320863298.XU CN203607151U (en) | 2013-12-17 | 2013-12-17 | Aluminum-alloy-conductor variable frequency cable |
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| CN203607151U true CN203607151U (en) | 2014-05-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320863298.XU Expired - Fee Related CN203607151U (en) | 2013-12-17 | 2013-12-17 | Aluminum-alloy-conductor variable frequency cable |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104078145B (en) * | 2014-06-27 | 2017-01-25 | 安徽弘毅电缆集团有限公司 | Large-carrying-capacity power cable with heat easy to dissipate |
| CN114068071A (en) * | 2021-11-11 | 2022-02-18 | 贵州天虹志远电线电缆有限公司 | Aluminum alloy core interlocking armor variable frequency cable |
-
2013
- 2013-12-17 CN CN201320863298.XU patent/CN203607151U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104078145B (en) * | 2014-06-27 | 2017-01-25 | 安徽弘毅电缆集团有限公司 | Large-carrying-capacity power cable with heat easy to dissipate |
| CN114068071A (en) * | 2021-11-11 | 2022-02-18 | 贵州天虹志远电线电缆有限公司 | Aluminum alloy core interlocking armor variable frequency cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: TONGYONG (TIANJIN) ALUMINIUM ALLOY PRODUCT CO., LT Free format text: FORMER NAME: ALCAN (TIANJIN) ALLOY PRODUCTS CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 300308, No. 251, fourteen West Road, Dongli Airport Logistics Development Zone, Tianjin Patentee after: General (Tianjin) aluminum alloy products Co., Ltd. Address before: 300308, No. 251, fourteen West Road, Dongli Airport Logistics Development Zone, Tianjin Patentee before: Alcan (Tianjin) Alloy Products Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140521 Termination date: 20181217 |
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| CF01 | Termination of patent right due to non-payment of annual fee |