CN203966585U - Medium voltage converter environmental protection aluminium alloy cable - Google Patents
Medium voltage converter environmental protection aluminium alloy cable Download PDFInfo
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- CN203966585U CN203966585U CN201420361260.7U CN201420361260U CN203966585U CN 203966585 U CN203966585 U CN 203966585U CN 201420361260 U CN201420361260 U CN 201420361260U CN 203966585 U CN203966585 U CN 203966585U
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Abstract
Medium voltage converter environmental protection aluminium alloy cable, comprise three master cores and three neutral line cores, each root master core comprise master core aluminium alloy conductor and outside it crosslinked conductor shield, insulating barrier and insulation screen of three-layer co-extruded dry type, described insulation screen is surrounded with metal screen layer outward; The neutral line insulating barrier that each root neutral line core comprises neutral line aluminium alloy conductor and directly extrudes outside it; Three master cores are triangular in shape symmetrical, and three neutral line cores embed symmetrical formation stranding triangular in shape in the middle of three described master core gaps; Described stranding is wrapped low smoke and zero halogen band, shielding layer of copper wires, copper strip shielding layer and extrude oversheath successively from inside to outside outward; Between described stranding and low smoke and zero halogen band, be provided with inserts.The feature with lightweight, strong proof voltage impact property, high tenacity, high-environmental, is specially adapted to ac rated voltage 6/10kV shielding and the strict electric line occasion of environmental-protecting performance requirement.
Description
Technical field
The utility model relates to cables manufacturing technical field, be specifically related to a kind of medium voltage converter environmental protection aluminium alloy cable, this cable is applicable to ac rated voltage 6/10kV shielding and strict power line and the electric line of environmental-protecting performance requirement, is particularly useful for the electric power transfer between frequency converter and motor in frequency-changing control system.
Background technology
In recent years, copper core low-voltage variable frequency cable, low-voltage variable frequency fire-resisting cable technology is comparative maturity, and be applied widely, along with industrial expansion, centering presses the demand of high-power frequency conversion motor and medium voltage frequency converter constantly to rise, in medium voltage converter speed regulation process, must use medium voltage converter cable connects, and this kind of cable is generally used in control cubicle between frequency converter and variable-frequency motor, generally be laid in industrial and mining enterprises' factory building inner, factory building inside and stube cable place often have a lot of equipment and precision instrument, these environments for use all need cable not halogen-containing, not containing characteristics such as heavy metal and shielding properties height, and frequency converter stube cable mainly adopts traditional polyvinyl chloride or polyethylene as insulation and sheath at present, flexibility and proof voltage impact are all not high, in use easily produce harmful substance or harmful radiation, when burning, produce the corrosivity pernicious gases such as hydrogen halides, and discharge a large amount of amount of smoke, contaminated environment, this just need to provide a kind of medium voltage converter environmental protection aluminium alloy cable of excellent performance, and current medium voltage converter power cable mainly adopts, it is copper core conductor structure, production cost is higher.Along with each cable enterprise and institute continue to increase the exploitation dynamics of aluminium alloy cable and the raising of traction, increasing aluminium alloy cable is applied in all trades and professions.Meanwhile, the scarcity of copper resource, renewable speed have become undisputable fact slowly, and the reserves of aluminium are abundant and price is low, for the resource consumption with the least possible obtains maximum economic benefit and social benefit, " with aluminium for copper " is just becoming ground zero and hot technology that cable industry further develops.
Summary of the invention
In order to overcome the defect of above-mentioned prior art, the purpose of this utility model is to provide a kind of medium voltage converter environmental protection aluminium alloy cable, this kind of cable has the proof voltage impact property of unique high flexibility, excellence, when economizing on resources, improve again pliability, the creep resistance of conductor, can effectively improve the bending property of cable.
The utility model provides a kind of medium voltage converter environmental protection aluminium alloy cable, comprise three master cores and three neutral line cores, each root master core comprise master core aluminium alloy conductor 1 and outside it crosslinked conductor shield 2, insulating barrier 3 and insulation screen 4 of three-layer co-extruded dry type, the outer metal screen layer 5 that is surrounded with of described insulation screen 4; The neutral line insulating barrier 7 that each root neutral line core comprises neutral line aluminium alloy conductor 6 and directly extrudes outside it; Three master cores are triangular in shape symmetrical, and three neutral line cores embed symmetrical formation stranding triangular in shape in the middle of three described master core gaps; Described stranding is wrapped low smoke and zero halogen band 8, shielding layer of copper wires 9, copper strip shielding layer 10 and extrude oversheath 11 successively from inside to outside outward; Between described stranding and low smoke and zero halogen band 8, be provided with inserts.
Further, described master core aluminium alloy conductor 1 and neutral line aluminium alloy conductor 6 are rare earth aluminium alloy single line circle and press and form.
Further, the semiconductive conductor screen that described conductor shield 2 extrudes for semiconductive nylon tape.
Further, the semiconductive insulation shielding that described insulation screen 4 extrudes for semiconductive nylon tape.
Further, described metal screen layer 5 adopts the bare copper wire braiding that count is 80% to form.
Further, the low-smoke halogen-free polyolefin oversheath of described oversheath 11 for extruding outside copper strip shielding layer 10.
Further, described insulating barrier 3 is crosslinked polyetylene insulated layer.
Further, described neutral line insulating barrier 7 is for extruding the crosslinked polyetylene insulated layer outside neutral line aluminium alloy conductor 6.
The utility model cable is the improvement to existing copper core conductor tradition insulating sheath material frequency-changing cable, when the current capacity of aluminium alloy cable is suitable with copper core, the weight of its cable reduces approximately 30%, and cost reduction is approximately more than 30%, lightweight, be easy to transportation and mounting and installation.And three master cores of the present utility model and three neutral line cores carry out stranding by " 3+3 " symmetrical structure, during stranding, cable core adopts the structural design of " 3+3 " full symmetric, because of compact conformation, stable performance, and three wrapped independently metal screen layers of master core, make cable have very strong proof voltage impact property.In addition, the generation of the large phenomenon of the amount of being fuming when medium voltage converter environmental protection aluminium alloy cable of the present utility model can be stopped traditional frequency conversion cable fire effectively, prevents that cable from producing secondary pollution when burning.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of medium voltage converter environmental protection aluminium alloy cable of the present utility model.
In figure: 1-master core aluminium alloy conductor, 2-conductor shield, 3-insulating barrier, 4-insulation screen, 5-metal screen layer, 6-neutral line aluminium alloy conductor, the insulation of the 7-neutral line, 8-low smoke and zero halogen band, 9-shielding layer of copper wires, 10-copper strip shielding, 11-oversheath.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described further, following examples are only for the technical solution of the utility model is more clearly described, and can not limit protection range of the present utility model with this.
Medium voltage converter environmental protection aluminium alloy cable of the present utility model as shown in Figure 1, comprise three master cores and three neutral line cores, each described root master core comprise master core aluminium alloy conductor 1 and outside it crosslinked conductor shield 2, insulating barrier 3 and insulation screen 4 of three-layer co-extruded dry type, the outer metal screen layer 5 that is surrounded with of described insulation screen 4; The neutral line insulating barrier 7 that each described root neutral line core comprises neutral line aluminium alloy conductor 6 and directly extrudes outside it.Master core aluminium alloy conductor 1 and neutral line aluminium alloy conductor 6 all adopt rare earth aluminium alloy single line to press stranded making, and the pliability of cable is greatly improved, and alleviating of cable weight also facilitates transportation and lay.The outer metal screen layer 5 that is surrounded with of described insulation screen 4, the 1 outer conductor shielding 2 of master core conductor, crosslinked polyetylene insulated 3, the three-layer co-extruded formation master core of insulation shielding 4, neutral conductor 6 is outer extrude crosslinked polyetylene insulated.During stranding, three master cores are triangular in shape symmetrical, it is middle triangular in shape symmetrical that neutral line core embeds three described master core gaps, make three described master cores and three neutral line cores with " 3+3 " symmetrical structure stranding, the outer three-layer co-extruded technique of master core aluminium alloy conductor 1, " 3+3 " full symmetric arrangement architecture stranding during stranding, make the construction of cable compact, and three wrapped independently metal screen layers 5 of master core, make electric field homogenizing and reach stable performance, make cable there is very strong proof voltage impact property.Described stranding outer wrapped low smoke and zero halogen band 8, shielding layer of copper wires 9, copper strip shielding layer 10 and extrude fire-retardant oversheath 11 successively from inside to outside, be provided with inserts between described stranding and low smoke and zero halogen band 8.The outer wrapped low smoke and zero halogen band 8 of stranding, then use copper wire to be wound around and copper strips dredge around double-layer shielding structure, finally the outermost layer of cable extrudes low-smoke halogen-free polyolefin oversheath 11.This cable insulation and sheath adopt is environment-friendly materials, the characteristics such as low-smoke halide-free fireproof composite polyolefine material has fire-retardant, low cigarette, Halogen, low toxicity, low burn into, make cable not only in use not produce harmful substance, and the cigarette producing when meeting fire burning is few, corrosivity and poisonous gas are also few, meet the characteristic requirements of environment-friendly cable.
The manufacture process of medium voltage converter environmental protection aluminium alloy cable of the present utility model is described referring to Fig. 1.
Master core aluminium alloy conductor 1 and neutral line aluminium alloy conductor 6 are rare earth aluminium alloy single line and press stranded making, this conductor has good bending property, aluminium alloy conductor is compared copper conductor, price is low, light specific gravity and having compared with high-flexibility, also has good creep resistance and decay resistance.At the outer three-layer co-extruded semiconductive conductor screen 2 of master core aluminium alloy conductor 1, crosslinked polyetylene insulated 3, semiconductive insulation shielding 4 as master core, 4 three layers of semiconductive conductor screens 2, crosslinked polyetylene insulated 3, semiconductive the insulation shielding altogether production technology of agent can reach and improve the uniform object of Electric Field Distribution, the semiconductive conductor screen that described conductor shield 2 extrudes for semiconductive nylon tape, the semiconductive insulation shielding that described insulation screen 4 extrudes for semiconductive nylon tape.Then the metal screen layer outside insulation screen 45 adopts the bare copper wire braid shielded that count is 80%, extrudes crosslinked polyetylene insulated 7 as neutral line core outside neutral line aluminium alloy conductor 6.Then three master cores and three neutral line cores are carried out to stranding by " 3+3 " symmetrical structure, during stranding, cable core adopts the structural design of " 3+3 " full symmetric, because of compact conformation, stable performance, and three wrapped independently metal screen layers 5 of master core, make cable have very strong proof voltage impact property.Cable does not in use have harmful substance or harmful radiation to produce, during unexpected burning, cable low-smoke and halogen-free flame retardant polyolefin jacket Surface Hydrogen oxide can burn and be heated, resolve into metal oxide and water sorbent surface amount of heat, can reduce the temperature of cable surface, slow down cable fire progress.Cable is not halogen-containing, and during burning, corrosivity and toxicity are lower, and the smog of generation is few, is conducive to after fire occurs rescue in time.The outer first wrapped low smoke and zero halogen band 8 of stranding, then the shielding layer of copper wires 9 that is wound of peripheral hardware copper wire, then add copper strips and dredge around forming copper strip shielding layer 10, finally at outermost layer, extrude low-smoke halogen-free polyolefin as oversheath 11.The new cable for copper with aluminium that the utility model provides, the pliability, the creep resistance that when economizing on resources, have improved again conductor have environmental protection characteristic simultaneously, can prevent that cable from producing secondary pollution when burning.
What should be understood that is; the above; it is only preferred embodiment of the present utility model; not in order to limit the utility model; every foundation technical spirit of the present utility model to any trickle modification made for any of the above embodiments, be equal to and replace and improve, within all should being included in the protection range of technical solutions of the utility model.
Claims (8)
1. a medium voltage converter environmental protection aluminium alloy cable, it is characterized in that: comprise three master cores and three neutral line cores, each root master core comprise master core aluminium alloy conductor (1) and outside it crosslinked conductor shield (2), insulating barrier (3) and insulation screen (4) of three-layer co-extruded dry type, the outer metal screen layer (5) that is surrounded with of described insulation screen (4); The neutral line insulating barrier (7) that each root neutral line core comprises neutral line aluminium alloy conductor (6) and directly extrudes outside it; Three master cores are triangular in shape symmetrical, and three neutral line cores embed symmetrical formation stranding triangular in shape in the middle of three described master core gaps; Described stranding is wrapped low smoke and zero halogen band (8), shielding layer of copper wires (9), copper strip shielding layer (10) and extrude oversheath (11) successively from inside to outside outward; Between described stranding and low smoke and zero halogen band (8), be provided with inserts.
2. medium voltage converter environmental protection aluminium alloy cable according to claim 1, is characterized in that: described master core aluminium alloy conductor (1) and neutral line aluminium alloy conductor (6) are rare earth aluminium alloy single line circle and press and form.
3. medium voltage converter environmental protection aluminium alloy cable according to claim 1, is characterized in that: the semiconductive conductor screen that described conductor shield (2) extrudes for semiconductive nylon tape.
4. medium voltage converter environmental protection aluminium alloy cable according to claim 1, is characterized in that: the semiconductive insulation shielding that described insulation screen (4) extrudes for semiconductive nylon tape.
5. medium voltage converter environmental protection aluminium alloy cable according to claim 1, is characterized in that: described metal screen layer (5) adopts the bare copper wire braiding that count is 80% to form.
6. medium voltage converter environmental protection aluminium alloy cable according to claim 1, is characterized in that: the low-smoke halogen-free polyolefin oversheath of described oversheath (11) for extruding outside copper strip shielding layer (10).
7. medium voltage converter environmental protection aluminium alloy cable according to claim 1, is characterized in that: described insulating barrier (3) is crosslinked polyetylene insulated layer.
8. medium voltage converter environmental protection aluminium alloy cable according to claim 1, is characterized in that: described neutral line insulating barrier (7) is for extruding the crosslinked polyetylene insulated layer outside neutral line aluminium alloy conductor (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420361260.7U CN203966585U (en) | 2014-07-01 | 2014-07-01 | Medium voltage converter environmental protection aluminium alloy cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420361260.7U CN203966585U (en) | 2014-07-01 | 2014-07-01 | Medium voltage converter environmental protection aluminium alloy cable |
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| CN203966585U true CN203966585U (en) | 2014-11-26 |
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| CN201420361260.7U Expired - Fee Related CN203966585U (en) | 2014-07-01 | 2014-07-01 | Medium voltage converter environmental protection aluminium alloy cable |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109741884A (en) * | 2018-12-25 | 2019-05-10 | 广州南洋电缆有限公司 | A kind of new energy car high-tension cable manufacturing method |
| CN112992435A (en) * | 2021-01-13 | 2021-06-18 | 江西新吉电缆有限公司 | Power cable for cross-linked polyethylene insulation frequency conversion system |
| 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 |
| WO2022257376A1 (en) * | 2021-06-12 | 2022-12-15 | 开开电缆科技有限公司 | Variable frequency cable |
-
2014
- 2014-07-01 CN CN201420361260.7U patent/CN203966585U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109741884A (en) * | 2018-12-25 | 2019-05-10 | 广州南洋电缆有限公司 | A kind of new energy car high-tension cable manufacturing method |
| CN109741884B (en) * | 2018-12-25 | 2020-12-01 | 广州南洋电缆有限公司 | Manufacturing method of high-voltage cable in new energy vehicle |
| CN112992435A (en) * | 2021-01-13 | 2021-06-18 | 江西新吉电缆有限公司 | Power cable for cross-linked polyethylene insulation frequency conversion system |
| WO2022257376A1 (en) * | 2021-06-12 | 2022-12-15 | 开开电缆科技有限公司 | Variable frequency cable |
| 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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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141126 Termination date: 20200701 |