CN102394138B - Aluminium alloy armored parallel assignment intelligent composite power cable and manufacture method thereof - Google Patents
Aluminium alloy armored parallel assignment intelligent composite power cable and manufacture method thereof Download PDFInfo
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- CN102394138B CN102394138B CN201110353870.3A CN201110353870A CN102394138B CN 102394138 B CN102394138 B CN 102394138B CN 201110353870 A CN201110353870 A CN 201110353870A CN 102394138 B CN102394138 B CN 102394138B
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- 239000000835 fiber Substances 0.000 claims abstract description 13
- 238000007789 sealing Methods 0.000 claims abstract description 13
- 239000010410 layer Substances 0.000 claims description 46
- 229910052751 metal Inorganic materials 0.000 claims description 21
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- 238000010924 continuous production Methods 0.000 claims 1
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- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
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Abstract
The invention discloses an aluminium alloy armored parallel assignment intelligent composite power cable which comprises three power cables in triangle cross section mutual parallel assignment. A temperature-sensitive fiber cable is provided at a center of geometry space formed by the assignment of the three cables and is parallel with the power cables. An aluminium alloy armored protecting pipe is sleeved on an external part of the three power cables in a sealing way and is in a bellows shape. The invention also discloses a manufacture method of the above aluminium alloy armored parallel assignment intelligent composite power cable, and the method is simple and easy in enforcement. The intelligent composite power cable can monitor work temperature of the cable in real time and in an intelligent way. The cable can be buried into surface soil with waterproof, ant prevention, mouse prevention and corrosion resistance. Eddy current loss is inhibited, surrounding electric field intensity is reduced, electromagnetic radiation and electrochemical corrosion are reduced, and a safety operation electrical condition of power transmission is satisfied. The cable has a wide application scope.
Description
Technical field
The present invention relates to a kind of Intelligent Composite power cable and manufacture method thereof for electric power transfer, relate in particular to a kind of Intelligent Composite power cable and manufacture method thereof of aluminium alloy armored parallel arrangement, be specifically applicable to the electric power transfer of the traction electric machine of variable frequency power supply.
Background technology
At present, urban electric power transmission also exists the situation of more use trolley wire.Along with the raising of the up-to-dateness of urban construction, require the market demand that trolley wire lands also to expand to some extent, therefore select which kind of cable just to become urgent technical problem.If arrange cable by excavating cable trough, increased many construction investments.Once and cable breaks down and need repairing, have the situation that repeatedly takies periphery vacant lot and affect urban environment and occur.
As shown in Figure 1, the power cable of existing metal armouring is single core or multicore twisting mostly, adopt armouring metal tape 9(such as steel band, aluminum alloy strip, stainless steel band etc.) carry out wrapped, or metal argon arc welding tubing armouring, and squeeze PVC sheath 10 outward in metal armouring.Also have some power cable products to be provided with the enforcement functor of outer layer metal silk as resistance detection, but the working temperature of cable cannot Real-Time Monitoring.Also have some fire-proof polyethylene insulated cables, in satisfied service condition, do not possess and can directly imbed in layer of ground soil.Multi-core power cable exists the problem of twisting destruction insulating barrier, the also capacitance of uncontrollable cable.Utilizing metal tape 9(steel band, stainless steel band, aluminum alloy strip etc.) cable of armouring exists corrosion of metals and causes the problem shortening useful life; therefore have to squeeze PVC sheath 10 outward at metal armouring layer and protected, so just increased the manufacturing cost of cable.The metal pipe material armoured cable forming as for argon arc welding also exists the problem that cannot seal, and its useful life is almost identical with metal tape armour cable, so also adopted the structure of squeezing PVC sheath 10 at skin, same cost is higher.
For the working temperature of intelligent real-time monitoring cable, on Europe, Japan, Korea S and some power cable transmission lines of America, adopt the method for external application temperature-sensitive optical fiber, but in use there will be the extremely flimsy situation of optical fiber, cause the increase of line upkeep expense.As Chinese patent CN200410035010.5 discloses a kind of fiber composite power cable, by wrapped optical fiber outside the insulating barrier of conductor.Such structure can cause very easily damaging optical fiber, so have to, at wrapped optical fiber squeeze jacket more outward, increase thus the manufacturing cost of cable, and caused technological process complicated.
Current; what the electrical power transmission system of the frequency control motor using on urban rail transit vehicles was selected is the parallel installation of single power cable; with the capacitance of control cables; therefore caused the increase of power cable arrangement space; also make the weight of holding clamp and protecting sheathing increase, and then increased the weight of train simultaneously.
System of laying for the selected feeder cable along trajectory long stator of magnetic suspension traffic system is very special, because the capacitance control of feeder cable will directly affect propulsive efficiency and the power of linear synchronous motor, also can affect the control system of motor.Therefore take above-mentioned factor into consideration, as shown in Figure 2, what the feeder cable of the long stator along the line in current high-speed magnetic suspension traffic system adopted is three parallel system of layings of tying up of power cable, is comparatively suitable selection.But, floating tens kilometers along the line of magnetic, or even the thousands of kilometers of power cables that lay, be all to utilize nylon binding tape 8 to be bundled into the feeder cable with triangular cross-sectional configuration, thereby cause the situation of a large amount of labor intensive and material resources.Therefore, how in the structure of feeder cable, to improve to solve the problems of the technologies described above, and considering the traction feed problem of synchronous speed change motor simultaneously, become the key that high-speed magnetic suspension traffic system is built, is even also the key point that Rail Transit System is built.
In sum, the technical problem related in this technical field is: 1. the suitable power cable structure of How to choose, meets and can directly imbed in surface layer, and do not need cable trough or cable duct; 2. how to relate to thus the operating state of intelligent real-time monitoring cable, accurately detection streamer fault point; 3. how to control the power cables capacitance in frequency conversion electric power transfer; 4. the weight that how to alleviate power cable, suitably reduces manufacturing cost.
Summary of the invention
The object of this invention is to provide a kind of aluminium alloy armored parallel assignment intelligent composite power cable and manufacture method thereof, described Intelligent Composite power cable can its working temperature of Real-Time Monitoring; Can directly imbed in surface soil, and waterproof, anti-ant, protection against rodents and corrosion-resistant; Can suppress eddy current loss, reduce electric field strength around, reduce electromagnetic radiation and electrochemical corrosion, meet the safe operation electric condition of electric power transfer; Applied range.
For achieving the above object, technical scheme of the present invention is to provide a kind of aluminium alloy armored parallel assignment intelligent composite power cable, and it comprises: three power cables, and cross section triangular in shape is arranged mutually parallel, and the tangent contact of outermost layer insulating surface between any two; Temperature-sensitive fiber optic cables, are arranged on described three power cables geometric space center forming of arranging, and be arranged in parallel with described power cable; Aluminium alloy armored protecting pipe, sealing is set in the outside of described three power cables, is bellows.
Described single power cable comprises: electric conductor; Be arranged on the inner insulating layer of described electric conductor outside; The wrapped metal screen layer in described inner insulating layer outside; Be coated on the semiconducting insulation layer of described metal screen layer outside; And be arranged on the external insulation protective layer of described semiconducting insulation layer outside.
Described electric conductor is formed by the twisting of multicore pure aluminum wire.
Described inner insulating layer and external insulation protective layer are crosslinked polyethylene layer.
Aluminium alloy armored parallel assignment intelligent composite power cable of the present invention, can be used for the working temperature of intelligent real-time monitoring composite power cable; Can directly imbed in surface soil, and waterproof, anti-ant, protection against rodents and corrosion-resistant; Can suppress eddy current loss, reduce electric field strength around, reduce electromagnetic radiation and electrochemical corrosion, meet the safe operation electric condition of electric power transfer; Can be widely used in the electrical power transmission system of the motor trailer system that onboard power system, electrical power transmission system and the alternative frequency power requirement electric capacity index of long stator feed system along the line, rail traffic vehicles of high-speed magnetic suspension traffic system is higher.
The present invention also provides a kind of manufacture method of aluminium alloy armored parallel assignment intelligent composite power cable, it comprises following steps: step 1, by three qualified finished product power cables that make, and qualified finished product temperature-sensitive fiber optic cables, send into the friction extruder with guide die by draw drum separately respectively; Step 2, by the guide die locus of arranging, three power cable cross sections triangular in shape are arranged mutually parallel and the tangent contact of outermost layer insulating surface between any two, temperature-sensitive fiber optic cables are arranged in by the arrange geometric space that forms of three power cables intracardiac; Step 3, utilize friction extruder to produce continuously the aluminium-alloy pipe of sealing, and sealing is coated on the outside of three power cables of the good locus of parallel arrangement; Step 4, carry out cooling fast to being coated the Intelligent Composite power cable of aluminium-alloy pipe; Step 5, cooled Intelligent Composite power cable pass through ripple forming mould continuously, and described outermost aluminium-alloy pipe is made to bellows; Step 6, utilize take-up reel reel closing quotation.
Described step 3 is specially: friction extruder has two spin friction wheels, aluminium alloy rod friction and Extrusion in chamber is become partly admittedly to melt state, extrude continuously and form the aluminium-alloy pipe of the sealing that 0.2～1.5mm is thick by extrusion die, and sealing is coated on the outside of three power cables of the good locus of parallel arrangement.
Described step 4 is specially: the Intelligent Composite power cable that has been coated aluminium-alloy pipe is sent into bosh continuously and carry out cooling fast.
In described step 5, adopt by the roll forming die head of pitch rotation as ripple forming mould.
The method for manufacturing of the aluminium alloy armored parallel assignment intelligent composite power cable that the present invention proposes, adopts the advanced means of production in concrete operation, effectively simplifies the manufacturing process of power cable.
Brief description of the drawings
Fig. 1 is the structural representation of the power cable of available technology adopting metal armouring;
Fig. 2 is the scheme of installation of prior art high speed magnetic suspension traffic system long stator feeder cable along the line;
Fig. 3 is the structural representation of aluminium alloy armored parallel assignment intelligent composite power cable in the present invention;
Fig. 4 is the schematic cross-section of aluminium alloy armored parallel assignment intelligent composite power cable in the present invention;
Fig. 5 is the manufacture method schematic diagram of aluminium alloy armored parallel assignment intelligent composite power cable in the present invention.
Embodiment
Below in conjunction with Fig. 3～Fig. 5, describe a preferred embodiment of the present invention in detail.
As shown in Figure 3 and Figure 4, aluminium alloy armored parallel assignment intelligent composite power cable of the present invention comprises: cross section triangular in shape is arranged mutually parallel and three power cables 101 of the tangent contact of outermost layer insulating surface between any two; Be arranged on described three power cables 101 arrange form geometric space center 16 and the temperature-sensitive fiber optic cables 6 that be arranged in parallel with described power cable 101; Sealing is set in the aluminium alloy armored protecting pipe 7 of described three power cable 101 outsides.
Wherein, the bellows of described aluminium alloy armored protecting pipe 7 for being made by ripple forming mould, in its outside without any plastic protective jacket layer.
Described single power cable 101 comprises: the electric conductor 1 being formed by the twisting of multicore pure aluminum wire, is applicable to the transmission of interchange or variable frequency power supply; Be arranged on the inner insulating layer 2 of described electric conductor 1 outside, this inner insulating layer 2 is crosslinked polyethylene layers; The wrapped metal screen layer 3 in described inner insulating layer 2 outsides, external ELECTROMAGNETIC RADIATION SHIELDING while transmission for variable frequency power supply, also simultaneously as the diagnosis conductor of power cable ground connection and fault point; Be coated on the semiconducting insulation layer 4 of described metal screen layer 3 outsides, as the resistance value key-course along power cable length, also can suitably reduce the eddy current loss of being brought by electric power transfer; And being arranged on the external insulation protective layer 5 of described semiconducting insulation layer 4 outside, this external insulation protective layer 5 is crosslinked polyethylene layers.
The structure of above-mentioned power cable 101 proposed by the invention is different from the long stator cable of the disclosed magnetic suspension traffic system of Chinese patent CN200410043309.5 of mentioning in background technology.Long stator cable Main Function in background technology is transmission and the excitation of variable frequency power supply, and its structure is: in electric conductor outer cladding metal screen layer, coated insulation layer subsequently, and at insulating barrier wrapped metal screen layer again outward, outermost layer is semiconducting insulation layer.Adopt such long stator construction of cable can realize excitation and the energy loss that reduces eddy current damping.
But the structure of power cable 101 proposed by the invention not only possesses the basic fundamental that can reduce eddy current loss, and further simplify the metallic shield structure (layer of metal screen 3 is only set) of power cable 101; In addition; in order to realize the aluminium alloy armored protecting pipe 7(outer layer metal structure of overall intelligence composite power cable) safe handling condition; adding and be provided with external insulation protective layer 5---crosslinked polyethylene layer at the outermost layer of single power cable 101, is the power cable product that is applicable to urban network reconstruction.
Aluminium alloy armored parallel assignment intelligent composite power cable of the present invention, there is following beneficial effect: 1. the geometric space center arrangement forming owing to arranging at three power cables temperature-sensitive fiber optic cables, can be used for the working temperature of intelligent real-time monitoring composite power cable.2. described in, the outermost layer of Intelligent Composite power cable is hermetically enclosed by seamless aluminium alloy armored ripple protecting pipe, therefore this Intelligent Composite power cable is satisfied can directly imbed the technical requirement in surface soil, and possesses waterproof, anti-ant, protection against rodents and corrosion resistant effect.3. described in, Intelligent Composite power cable reaches the technique effect for copper with aluminium; its structural design is relevant to the technical requirement of electromagnetic compatibility, electromagnetic radiation protection; can minimum degree (index that technical standard is accepted) will be reduced on the impact of environment completely; can suppress eddy current loss; reduce Intelligent Composite power cable electric field strength around; thereby reduce electromagnetic radiation and electrochemical corrosion, meet the safe operation electric condition of electric power transfer, this has played crucial effect for improving urban distribution network.4. described in, Intelligent Composite power cable can be applied in the electrical power transmission system of the motor trailer system that onboard power system, electrical power transmission system and the alternative frequency power requirement electric capacity index of long stator feed system along the line, rail traffic vehicles of high-speed magnetic suspension traffic system is higher, and range of application is very wide.
Further, as shown in Figure 5, introduce in detail the manufacture method of aluminium alloy armored parallel assignment intelligent composite power cable of the present invention, its key is aluminium alloy armored step.
Step 1, makes 3 single finished product power cables 101 that are up to the standards, and makes 1 finished product temperature-sensitive fiber optic cables 6 that are up to the standards; 101 and 1 temperature-sensitive fiber optic cables 6 of these 3 power cables, respectively by draw drum 11 unwrapping wire separately, are sent into the friction extruder 12 with guide die.
Step 2, under guide die auxiliary, 3 power cable 101 cross sections triangular in shape are arranged mutually parallel and the tangent contact of outermost layer insulating surface between any two, and described temperature-sensitive fiber optic cables 6 are positioned at by three power cables 101 geometric space center 16 forming of arranging, without twisting.
Step 3, friction extruder 12 has two spin friction wheels, by the aluminium alloy rod of manufacturing by continuous casting and rolling production line, in chamber, friction and Extrusion becomes partly admittedly to melt state, extrude continuously and form the aluminium-alloy pipe of the sealing that 0.2～1.5mm is thick by extrusion die, and sealing is coated in step 2 the outside of three power cables 101 of the good locus of parallel arrangement, begin to take shape Intelligent Composite power cable.In this step, utilizing friction extruder 12 to produce aluminium alloy armored pipe is continuously one of innovative point of the present invention.
The described aluminium alloy that is become partly admittedly to melt state by friction and Extrusion has reached the temperature of nearly 600oC, and by after extrusion die moulding, its temperature can be reduced to 250oC left and right, but still higher.
Step 4, by the Intelligent Composite power cable that has been coated aluminium-alloy pipe send into continuously bosh 13 carry out cooling fast, thereby the temperature of aluminium-alloy pipe is reduced rapidly, to protect the external insulation layer 5 of power cable 101.
Step 5, cooled Intelligent Composite power cable passes through ripple forming mould 14 continuously, and described outermost aluminium-alloy pipe is made to bellows, thereby as the outermost aluminium alloy armored protecting pipe 7 of Intelligent Composite power cable.In the present embodiment, can adopt by the roll forming die head of desired pitch rotation as ripple forming mould.
Step 6, last take-up reel 15 is wound into the Intelligent Composite power cable of finished product on the one-tenth dish cable of the packaged condition of delivery.
The method for manufacturing of the aluminium alloy armored parallel assignment intelligent composite power cable that the present invention proposes, adopts the advanced means of production in concrete operation, effectively simplifies the manufacturing process of power cable.
Although content of the present invention has been done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to limitation of the present invention.Read after foregoing those skilled in the art, for multiple amendment of the present invention and substitute will be all apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (6)
1. an aluminium alloy armored parallel assignment intelligent composite power cable, is characterized in that, is made up of following part:
Three power cables (101), cross section triangular in shape is arranged mutually parallel, and the tangent contact of outermost layer insulating surface between any two;
Temperature-sensitive fiber optic cables (6), are arranged on described three power cables (101) geometric space center (16) forming of arranging, and be arranged in parallel with described power cable (101);
Through the aluminium alloy armored protecting pipe (7) of friction and Extrusion explained hereafter, sealing is set in the outside of described three power cables (101), is bellows;
Single power cable (101) is made up of following part: electric conductor (1); Be arranged on the outside inner insulating layer (2) of described electric conductor (1); Wrapped at the outside metal screen layer (3) of described inner insulating layer (2); Be coated on the outside semiconducting insulation layer (4) of described metal screen layer (3); And be arranged on the outside external insulation protective layer (5) of described semiconducting insulation layer (4).
2. aluminium alloy armored parallel assignment intelligent composite power cable as claimed in claim 1, is characterized in that, described electric conductor (1) is formed by the twisting of multicore pure aluminum wire.
3. aluminium alloy armored parallel assignment intelligent composite power cable as claimed in claim 1, is characterized in that, described inner insulating layer (2) and external insulation protective layer (5) are crosslinked polyethylene layer.
4. a manufacture method for the aluminium alloy armored parallel assignment intelligent composite power cable as described in one of claim 1-3, is characterized in that, comprises following steps:
Step 1, by three qualified finished product power cables (101) that make, and qualified finished product temperature-sensitive fiber optic cables (6), send into the friction extruder (12) with guide die by draw drum (11) separately respectively;
Step 2, by the guide die locus of arranging, three power cables (101) cross section triangular in shape is arranged mutually parallel and the tangent contact of outermost layer insulating surface between any two, temperature-sensitive fiber optic cables (6) are positioned at by three power cables (101) geometric space center (16) forming of arranging;
Step 3, the aluminium-alloy pipe that utilizes the continuous production of friction extruder (12) to seal, and sealing is coated on the outside of three power cables (101) of the good locus of parallel arrangement;
Wherein, friction extruder (12) has two spin friction wheels, aluminium alloy rod friction and Extrusion in chamber is become partly admittedly to melt state, extrude continuously and form the aluminium-alloy pipe of the sealing that 0.2～1.5mm is thick by extrusion die, and sealing is coated on the outside of three power cables (101) of the good locus of parallel arrangement;
Step 4, carry out cooling fast to being coated the Intelligent Composite power cable of aluminium-alloy pipe;
Step 5, cooled Intelligent Composite power cable pass through ripple forming mould (14) continuously, and outermost described aluminium-alloy pipe is made to bellows;
Step 6, utilize take-up reel (15) reel closing quotation.
5. the manufacture method of aluminium alloy armored parallel assignment intelligent composite power cable as claimed in claim 4, it is characterized in that, described step 4 is specially: the Intelligent Composite power cable that has been coated aluminium-alloy pipe is sent into bosh (13) continuously and carry out cooling fast.
6. the manufacture method of aluminium alloy armored parallel assignment intelligent composite power cable as claimed in claim 4, is characterized in that, in described step 5, adopts by the roll forming die head of pitch rotation as ripple forming mould (14).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110353870.3A CN102394138B (en) | 2011-11-10 | 2011-11-10 | Aluminium alloy armored parallel assignment intelligent composite power cable and manufacture method thereof |
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| CN201110353870.3A CN102394138B (en) | 2011-11-10 | 2011-11-10 | Aluminium alloy armored parallel assignment intelligent composite power cable and manufacture method thereof |
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| CN102394138A CN102394138A (en) | 2012-03-28 |
| CN102394138B true CN102394138B (en) | 2014-09-10 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| DE102013227051B4 (en) * | 2013-12-20 | 2017-03-30 | Leoni Kabel Holding Gmbh | Measuring arrangement and method for temperature measurement and sensor cable for such a measuring arrangement |
| CN103903678B (en) * | 2014-03-01 | 2016-07-20 | 安徽中通电缆科技有限公司 | Automatically controlled combination cable used by a kind of equipment |
| CN109188627A (en) * | 2016-04-14 | 2019-01-11 | 杭州富通通信技术股份有限公司 | Fiber optic cable manufacture method |
| CN112133487A (en) * | 2020-09-24 | 2020-12-25 | 安徽国信电缆科技股份有限公司 | Polyethylene insulation flame-retardant polyvinyl chloride sheath computer cable |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2691021Y (en) * | 2004-03-29 | 2005-04-06 | 江苏亨通电力电缆有限公司 | Optical fiber temperature detection defect early warning composite power cable |
| CN201364765Y (en) * | 2008-12-16 | 2009-12-16 | 湖南金杯电缆有限公司 | Rail traffic power cable with corrugated aluminium tube |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100506860B1 (en) * | 2003-12-03 | 2005-08-08 | 엘에스전선 주식회사 | Optical fiber composite electrical power cable |
| CN201868144U (en) * | 2010-12-01 | 2011-06-15 | 安徽太平洋电缆集团有限公司 | Composite flexible fireproof power cable with optical fibers |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2691021Y (en) * | 2004-03-29 | 2005-04-06 | 江苏亨通电力电缆有限公司 | Optical fiber temperature detection defect early warning composite power cable |
| CN201364765Y (en) * | 2008-12-16 | 2009-12-16 | 湖南金杯电缆有限公司 | Rail traffic power cable with corrugated aluminium tube |
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