CN2598104Y - Big section copper core fire-dividing conductor - Google Patents
Big section copper core fire-dividing conductor Download PDFInfo
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- CN2598104Y CN2598104Y CNU03203928XU CN03203928U CN2598104Y CN 2598104 Y CN2598104 Y CN 2598104Y CN U03203928X U CNU03203928X U CN U03203928XU CN 03203928 U CN03203928 U CN 03203928U CN 2598104 Y CN2598104 Y CN 2598104Y
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- copper core
- heavy
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- copper
- milliken conductors
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Abstract
The utility model relates to a big section copper core fire-dividing conductor which comprises five copper plates with the five sizable sections which are twisted to certain direction. The utility model also comprises an insulative goffered paper which is arranged between the copper plates and applied to separate the copper plates, a semiconducting nylon belt covered the copper plates and a non-woven fabrics protective layer enclosed at the outmost layer. The utility model evenly divides the huge segmental copper conductive wire into five mutual insulative parts to reduce the effect of the skin effect and the proximity effect to the minimum; therefore, the transmission capacity of the conductive wire is greatly increased.
Description
Technical field
The utility model relates to a kind of heavy in section, jumbo power transmission cable, and particularly relating to a kind of sectional area is 2500mm
2Copper core five milliken conductors.
Prior art
In recent years along with development and national economy, the power consumption surge increases year by year for the demand of heavy in section, jumbo power transmission cable.Domestic 630mm
2The quality condition that reaches following crosslinked cable still is stable, but 800mm
2Reach above crosslinked cable conductor wire core owing to reasons such as equipment, technological equipment, technologies, produce comparatively difficulty, quality is also unstable.800mm
2And above large size conductor, transmission capacity is linear the increasing along with the long-pending increase of cross-sectional area of conductor, the influence of cause the reason of this phenomenon to be " kelvin effect " and " approach effect ".For the loss conductor drops to minimum, it is necessary adopting the way of milliken conductor, also is feasible.
Summary of the invention
In view of this, the purpose of this utility model is to provide a kind of heavy in section copper core five milliken conductors that can overcome the defective of prior art, and it is made up of five personal share pieces, each strand interblock separates with insulation crimped paper, to guarantee the independent transmission current of each strand piece, reduce conductor losses, improve transmission capacity.
For achieving the above object; the technical solution of the utility model is: described heavy in section copper core five milliken conductors comprise the copper core thigh piece that five sizes and cross sectional shape are all identical; press certain orientation twist stranding by these five copper core thigh pieces; described heavy in section copper core five milliken conductors also comprise the insulation crimped paper that is arranged between this copper core thigh piece, each strand piece is kept apart, and be wrapped in this copper core thigh piece periphery the semiconductive nylon tape, be wrapped in outermost nonwoven fabrics protective layer.
The utility model is by breaking the whole up into parts the heavy in section copper conductor, original copper core cross section is evenly divided into five thigh pieces of isolating mutually, thereby the adverse effect of " kelvin effect " and " approach effect " is dropped to bottom line, improved the transmission capacity of lead greatly.
Description of drawings
Fig. 1 is the structural representation of an embodiment of the utility model;
Fig. 2 is the structural representation of the utility model second embodiment.
Embodiment
Below in conjunction with drawings and Examples the utility model is elaborated.
See also Fig. 1: be a specific embodiment of the present utility model, these heavy in section copper core five milliken conductors comprise the copper core thigh piece 4 that five sizes and cross sectional shape are all identical, and press certain orientation twist stranding by these five copper core thigh pieces 4, in order to guarantee the independent transmission current of each strand piece, between each copper core thigh piece 4, be that 0.075～0.25mm, width are that the insulation crimped paper 3 of 59.0mm is kept apart each strand piece with thickness, insulation crimped paper 3 is too wide or too narrow all improper, does not normally want widely to go out or be less than 1.0mm.Other technologies requirement to insulation crimped paper 3 is: tensile strength is not less than 70N, and cross directional tensile is not less than 40N, and the longitudinal tensile strain rate is not less than 50%.
In order to tighten each strand piece, wrap up with three layers of smooth semiconductive nylon tapes 2 coiling in the periphery of this copper core thigh piece 4 during stranding, the width of this semiconductive nylon tape 2 is that 50mm, thickness are 0.14mm.This semiconductive nylon tape 2 must not wrinkling, flange after wrapped, and Duplication is 30%～50%.The lap of outer semiconductive nylon tape and internal layer semiconductive nylon tape is spaced apart.The semiconductive nylon tape should be firmly in the joint, the external diameter increase should be as far as possible little.At last, avoid mechanical damage, outside wrapped good semiconductive nylon tape 2, also will wrap up with two-layer nonwoven protective layer 1 for dustproof and protection semiconductive nylon tape 2.
As can be seen from Figure 1: the single cross sectional shape of described five copper core thigh pieces 4 is similar to fan-shaped, and the cross sectional shape of formed heavy in section copper core was for circular after they combined.
Because the fan-shaped sharp corner at described five copper core thigh pieces 4 is easy to form annular space, this annular space is in the home position (as shown in Figure 2) of the heavy in section copper core behind the stranding just, for guarantee behind the stranding heavy in section copper core five milliken conductor Stability Analysis of Structures, smooth surface rounding, stranded closely, can adopt a round copper conductor or spill 5 to be filled into this gap.The external diameter of this circle copper conductor or spill 5 equates with this annular space internal diameter or is smaller, with external diameter and the roundness behind the copper core five milliken conductor strandings of assurance heavy in section.For sectional area is 2500mm
2Heavy in section copper core five milliken conductors, stipulate that its laying up diameter is 61.2 ± 0.6mm.
2500mm
2The making of five milliken conductors is very strict to equipment requirements, and this place adopts JLK-630/6+12+18+24+30 frame type stranding machine and JPD-2500 dish strand formula cabler to make.The sub-thread die mould of described five milliken conductors is to adopt layering to press mode, presses coefficient and can reach 86%～90%, bad defectives such as the outward appearance of compact conductor should smooth, no burr, sharp edge, the thigh that breaks.Also will carry out pretwist when pressing, stranding is to finish on JPD-2500 dish strand formula cabler, and strand formula cabler has been installed position, automatic school device, and the position that can proofread and correct each strand conductor in the stranding process makes it remain same angle and enters also loft.
Described per share copper core thigh piece 4 is promptly carried out layering to single round copper wire and is pressed by 90 stranded forming of single round copper wire sub-thread, and every single round copper wire should meet the regulation of GB3953-83 standard TR model, smooth surface, no burr, oxidative phenomena must not be arranged.The diameter of single line is 2.78mm, and its hierarchal arrangement mode is 1+6+12+18+24+29, for guaranteeing that press coefficient is controlled at 86%～90%, adopts layering to press mode, from 12 dishes to 30 dishes totally 4 groups of pressing molds.For guaranteeing the size of each passage strand, divide malleation and side pressure in every group of pressing mold again, at the doubling mould employing fan-shaped mould of 18 dishes to 30 dishes.Carry out pretwist when layering is pressed, the pretwist direction is identical with the stranding direction, and the pretwist pitch is 27～32 times of laying up diameter, is controlled at about 1600mm herein, and then flexibility is poor to be beneficial to the plying stranding too greatly, and too little flexibility is good but be unfavorable for stranding.
2500mm
2Heavy in section copper core five milliken conductors stranded want closely, evenly, pine strand must not be arranged, lack strand back of the body strand, disconnected strand phenomenon, any single line does not allow the situation existence of broken string in the strand, the internal layer single line allows welding, joint is used upset butt welding, should anneal in the joint, the every side of annealing length is not less than 200mm, and simultaneously weld should smooth, firm, rounding, the distance of adjacent two joints is not less than 1.5m, and skin does not allow joint.
Five milliken conductors are tight in order to guarantee Stability Analysis of Structures when stranding, must cross three road pressing molds, and the first road mould should be than the big 1.0mm～1.2mm of laying up diameter, and the second road mould should be than the big 0.3mm～0.5mm of laying up diameter, and the 3rd road mould should equal laying up diameter.
2500mm
2Behind the heavy in section copper core five milliken conductor strandings, the D.C. resistance in the time of 20 ℃ should be not more than 0.0073 Ω/km, and this conductor can be used for the conductor wire core of pressure among 10～500KV, high pressure and extra-high-tension cable.Be laid in the wet environment for a long time as cable, or pass through rivers, lake, can be with 2500mm
2Heavy in section copper core five milliken conductors are made into the conductor stop water.Promptly add material water-proof material in the stranded process of described copper core thigh piece 4 sub-threads, increase winding water material then in the process with five copper core thigh piece 4 twist strandings, other technological parameters are constant.
Claims (10)
1, a kind of heavy in section copper core five milliken conductors; it is characterized in that: it comprises the copper core thigh piece (4) that five sizes and cross sectional shape are all identical; and press certain orientation twist stranding by these five copper core thigh pieces (4); described heavy in section copper core five milliken conductors also comprise the insulation crimped paper (3) that is arranged between this copper core thigh piece (4), each strand piece is kept apart, and are wrapped in the peripheral semiconductive nylon tape (2) of this copper core thigh piece (4), are wrapped in outermost nonwoven fabrics protective layer (1).
2, heavy in section according to claim 1 copper core five milliken conductors, it is characterized in that: the cross sectional shape of described five copper core thigh pieces (4) is similar to fan-shaped, and they combine the cross sectional shape of formed heavy in section, back copper core for circular.
3, heavy in section according to claim 2 copper core five milliken conductors, it is characterized in that: described heavy in section copper core five milliken conductors also comprise a round copper conductor or spill (5), be arranged on the home position formed annular space place of the fan-shaped wedge angle of described five copper core thigh pieces (4) at this heavy in section copper core, the external diameter of this circle copper conductor or spill (5) equates with this annular space internal diameter or is smaller.
4, according to claim 1 or 2 or 3 described heavy in section copper core five milliken conductors, it is characterized in that: described copper core thigh piece (4) is by 90 stranded forming of single round copper wire sub-thread, promptly single round copper wire being carried out layering presses, the diameter of every single round copper wire is 2.78mm, its hierarchal arrangement mode is 1+6+12+18+24+29, carry out pretwist when layering is pressed, the pretwist direction is identical with the stranding direction, and the pretwist pitch is 27～32 times of laying up diameter.
5, heavy in section according to claim 4 copper core five milliken conductors is characterized in that: add material water-proof material in the stranded process of described copper core thigh piece (4) sub-thread, increase winding water material in the process with five copper core thigh pieces (4) twist stranding.
6, according to claim 1 or 2 or 3 described heavy in section copper core five milliken conductors, it is characterized in that: in the stranded process of described copper core thigh piece (4) sub-thread, add material water-proof material, in process, increase winding water material five copper core thigh pieces (4) twist stranding.
7, according to claim 1 or 2 or 3 described heavy in section copper core five milliken conductors, it is characterized in that: the external diameter of described heavy in section copper core five milliken conductors behind stranding is 61.2 ± 0.6mm, and sectional area is 2500mm
2
8, according to claim 1 or 2 or 3 described heavy in section copper core five milliken conductors, it is characterized in that: the thickness of described insulation crimped paper (3) is 0.075～0.25mm, and width is 59.0mm, and tensile strength is not less than 70N, cross directional tensile is not less than 40N, and the longitudinal tensile strain rate is not less than 50%.
9, according to claim 1 or 2 or 3 described heavy in section copper core five milliken conductors, it is characterized in that: described semiconductive nylon tape (2) is that three layers of width are that 50mm, thickness are the smooth semiconductive nylon tape of 0.14mm, and the Duplication of this semiconductive nylon tape (2) when wrapped is 30%～50%.
10, according to claim 1 or 2 or 3 described heavy in section copper core five milliken conductors, it is characterized in that: described nonwoven fabrics protective layer (1) is for two-layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU03203928XU CN2598104Y (en) | 2003-02-13 | 2003-02-13 | Big section copper core fire-dividing conductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU03203928XU CN2598104Y (en) | 2003-02-13 | 2003-02-13 | Big section copper core fire-dividing conductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2598104Y true CN2598104Y (en) | 2004-01-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU03203928XU Expired - Fee Related CN2598104Y (en) | 2003-02-13 | 2003-02-13 | Big section copper core fire-dividing conductor |
Country Status (1)
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| CN (1) | CN2598104Y (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101714432B (en) * | 2009-12-30 | 2011-05-18 | 天津塑力线缆集团有限公司 | Laying up method for twisting low-voltage multi-core cables by laying up drum twister |
| CN102280194A (en) * | 2011-05-18 | 2011-12-14 | 无锡市曙光电缆有限公司 | Cross-linked polyethylene isolated power cable of split conductor structure |
| CN102347104A (en) * | 2011-06-24 | 2012-02-08 | 四川明星电缆股份有限公司 | 7 split conductor with cable copper core section of 3500mm<2> and manufacturing method thereof |
| CN102360588A (en) * | 2011-09-09 | 2012-02-22 | 江苏圣安电缆有限公司 | 3000 mm<2> aluminum core segmental conductor |
| CN101111902B (en) * | 2005-02-03 | 2012-04-04 | 纳幕尔杜邦公司 | Insulated power cable |
| CN102737787A (en) * | 2012-07-17 | 2012-10-17 | 四川明星电缆股份有限公司 | Manufacturing method for seabed photoelectricity composite rope with split conductor in huge cross section |
| CN102760521A (en) * | 2011-04-27 | 2012-10-31 | 上海市电力公司 | Power cable with layered insulating stranded conductor |
| CN102881377A (en) * | 2012-10-23 | 2013-01-16 | 江苏中辰电缆有限公司 | Large-section milliken-conductor comprehensive water-retaining crosslinking electric cable |
| CN102938263A (en) * | 2012-11-20 | 2013-02-20 | 上海斯麟特种设备工程有限公司 | Small-section cable with split conductor structure and manufacture method thereof |
| CN103065722A (en) * | 2012-12-06 | 2013-04-24 | 杭州电缆股份有限公司 | Ultra-high-voltage cable conductor manufacturing method |
| CN104319025A (en) * | 2014-11-25 | 2015-01-28 | 重庆泰山电缆有限公司 | Production method of high-roundness milliken conductor for high-voltage cable |
| CN104376912A (en) * | 2014-11-27 | 2015-02-25 | 国家电网公司 | Large-section power cable conductor low in skin effect |
| CN104835597A (en) * | 2015-05-04 | 2015-08-12 | 重庆泰山电缆有限公司 | Split conductor separating band and split conductor |
-
2003
- 2003-02-13 CN CNU03203928XU patent/CN2598104Y/en not_active Expired - Fee Related
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101111902B (en) * | 2005-02-03 | 2012-04-04 | 纳幕尔杜邦公司 | Insulated power cable |
| CN101714432B (en) * | 2009-12-30 | 2011-05-18 | 天津塑力线缆集团有限公司 | Laying up method for twisting low-voltage multi-core cables by laying up drum twister |
| CN102760521A (en) * | 2011-04-27 | 2012-10-31 | 上海市电力公司 | Power cable with layered insulating stranded conductor |
| CN102760521B (en) * | 2011-04-27 | 2014-11-26 | 上海市电力公司 | Power cable with layered insulating stranded conductor |
| CN102280194A (en) * | 2011-05-18 | 2011-12-14 | 无锡市曙光电缆有限公司 | Cross-linked polyethylene isolated power cable of split conductor structure |
| CN102347104B (en) * | 2011-06-24 | 2013-06-12 | 四川明星电缆股份有限公司 | 7 split conductor with cable copper core section of 3500mm<2> and manufacturing method thereof |
| CN102347104A (en) * | 2011-06-24 | 2012-02-08 | 四川明星电缆股份有限公司 | 7 split conductor with cable copper core section of 3500mm<2> and manufacturing method thereof |
| CN102360588A (en) * | 2011-09-09 | 2012-02-22 | 江苏圣安电缆有限公司 | 3000 mm<2> aluminum core segmental conductor |
| CN102737787A (en) * | 2012-07-17 | 2012-10-17 | 四川明星电缆股份有限公司 | Manufacturing method for seabed photoelectricity composite rope with split conductor in huge cross section |
| CN102881377A (en) * | 2012-10-23 | 2013-01-16 | 江苏中辰电缆有限公司 | Large-section milliken-conductor comprehensive water-retaining crosslinking electric cable |
| CN102938263A (en) * | 2012-11-20 | 2013-02-20 | 上海斯麟特种设备工程有限公司 | Small-section cable with split conductor structure and manufacture method thereof |
| CN102938263B (en) * | 2012-11-20 | 2015-03-11 | 上海斯麟特种设备工程有限公司 | Small-section cable with split conductor structure and manufacture method thereof |
| CN103065722A (en) * | 2012-12-06 | 2013-04-24 | 杭州电缆股份有限公司 | Ultra-high-voltage cable conductor manufacturing method |
| CN103065722B (en) * | 2012-12-06 | 2015-08-19 | 杭州电缆股份有限公司 | The manufacture method of ultra-high-voltage cable conductor |
| CN104319025A (en) * | 2014-11-25 | 2015-01-28 | 重庆泰山电缆有限公司 | Production method of high-roundness milliken conductor for high-voltage cable |
| CN104376912A (en) * | 2014-11-27 | 2015-02-25 | 国家电网公司 | Large-section power cable conductor low in skin effect |
| CN104835597A (en) * | 2015-05-04 | 2015-08-12 | 重庆泰山电缆有限公司 | Split conductor separating band and split conductor |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20050429 Pledge (preservation): Preservation |
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| PP01 | Preservation of patent right |
Effective date of registration: 20051021 Pledge (preservation): Preservation |
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| PP01 | Preservation of patent right |
Effective date of registration: 20060407 Pledge (preservation): Preservation |
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| PD01 | Discharge of preservation of patent |
Date of registration: 20061002 Pledge (preservation): Preservation |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20040107 Termination date: 20100213 |