CN103886996A - Steel core aluminum alloy type stranded wire overhead wire and manufacturing process thereof - Google Patents
Steel core aluminum alloy type stranded wire overhead wire and manufacturing process thereof Download PDFInfo
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- CN103886996A CN103886996A CN201410040202.9A CN201410040202A CN103886996A CN 103886996 A CN103886996 A CN 103886996A CN 201410040202 A CN201410040202 A CN 201410040202A CN 103886996 A CN103886996 A CN 103886996A
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Abstract
The invention relates to a novel special overhead wires used in the harsh environment of a power transmission project, an adverse effect of an unsafe transmission line caused by a long distance power transmission line is overcome, and the mechanical properties of wire stranding are satisfied. The cross section of the wire is in the shape of SZ, and the outer diameter of the wire is not larger than 39.60mm. The manufacturing process of the SZ-shaped high strength steel core aluminum alloy type stranded wire overhead wire comprises the steps of (1) preparing high strength aluminum alloy liquid components which satisfy the conductive performance and mechanical and physical performance of a high strength aluminum alloy rod and controlling the aluminum alloy components in a suitable range such as 0.5% to 0.7% of Si and 0.6% to 0.9% of Mg, (2) carrying out special process of raising conductivity and reducing transmission loss of a line in running on high strength aluminum alloy liquid, (3) controlling the final temperature of continuous casting and continuous rolling of the high strength aluminum alloy rod within 100 DEG C, (4) drawing a high strength aluminum alloy SZ-shaped wire by using a high speed wire drawing machine through an SZ-shaped high strength aluminum alloy rod wire drawing mould, and (5) using a Phi 630/84B type frame stranding machine to carry out stranding.
Description
Technical field
The present invention relates to a kind of new special aerial condutor using under the adverse circumstances of large leap section and middle ice formation, the heavy icing area etc. of power transmission engineering.
Background technology
In power transmission engineering construction project, have is much hundreds of and even the long distance powedr transmission engineering of thousands of kilometers, transmission line must pass through various natural environment section, especially the severe natural environment section such as heavy icing area, middle ice formation, the icing layer of aerial condutor can affect transmission line safe operation.Therefore need a kind of in the situation that aerial condutor cross sectional shape is constant, reduce overhead conducting wire outer diameter, under the extreme natural environment such as heavy icing area, middle ice formation, reduce aerial condutor icing weight, avoid causing because of serious natural calamity the great harm of grid safe operation, ensure the safe and reliable operation of electrical network, there is good social economic effect, simultaneously in the time manufacturing this aerial condutor, must meet good electric conductivity, mechanical property and mechanical and physical performance, when wire stranding, also need to meet the tight rounding of wire strand system not loose.
Summary of the invention
The present invention overcomes long distance transmission line Yin Putong aerial condutor icing weight and causes greatly the unsafe adverse effect of transmission line, and mechanical property and the mechanical performance made to meet molded line strand by improving the manufacturing process of high-strength aluminum alloy bar.
For achieving the above object, the present invention takes following technical scheme:
Steel-core-aluminium alloy molded line Wire twisting frame hollow wire, conductor cross-section is SZ shape, and wire diameter is not more than 39.60mm.
Above-mentioned wire diameter is compared with the plain conductor that external diameter is 43.60mm, cross sectional shape is identical, more than external diameter reduces 4mm, at the extreme natural environment section of transmission line, as there is the natural calamities such as sleet, icing in aerial condutor, in same ice covering thickness situation, wire diameter reduces, and can alleviate the icing weight of wire, improve the reliability of transmission line safe operation, be very suitable for using in transmission line section under extreme natural environment and large span power transmission engineering.
The manufacturing process of above-mentioned aerial condutor is as follows:
(1) preparation meets the high-strength aluminum alloy liquid composition of high-strength aluminum alloy bar electric conductivity and mechanical and physical performance; Following al alloy component is controlled in suitable scope, as Si0.5～0.7%, Mg0.6～0.9%.
(2) the special process processing of transmission losses while high-strength aluminum alloy liquid being adopted to raising conductance, the operation of reduction circuit;
(i) carry out boronation processing: remove Mn, Cr, V, Ti in aluminium alloy, improve conductance.
(ii) increase iron processing: the tensile strength that further improves aluminium alloy
(iii) degasification slagging-off is processed: remove hydrogen and the small slag particle of aluminum alloy melt, purifying aluminum alloy liquid.
(iv) filtration treatment: further remove the fine particle in aluminum alloy melt.
(3) the continuous casting and rolling rolling final temperature of high-strength aluminum alloy bar is controlled in 100 DEG C;
(4) by SZ shape high-strength aluminum alloy bracing wire mould, adopt high speed molded line drawing machine to draw high-strength aluminum alloy SZ shape line, make it to meet the high-strength aluminum alloy SZ shape linear dimension requirement that meets technical requirement;
(5) adopt the frame type stranding machine system of twisting, ensure the stranded even tension of SZ shape high-strength steel core aluminium alloy molded line twisted wire, on frame type stranding machine, pre twist is installed and prevents high-strength aluminum alloy SZ shape line equipment for supporting patient with burn simultaneously, adopt ripe stranded technology, ensure that the tight rounding of wire strand system is not loose.
The manufacture of high-strength aluminum alloy bar must meet its electric conductivity and mechanical and physical performance, by the Z-shaped high-strength aluminum alloy bracing wire of New type of S mould, substitute the traditional circular die using at present, the each SZ shape high-strength aluminum alloy line tension of molded line strand system is even, molded line strand system and pretwist (preform) meet corresponding technical conditions, closely (not loose), rounding and smooth surface of molded line strand system.
The present invention is compared with common aerial condutor, the molded line Wire twisting frame hollow wire with identical cross-sectional shape has that external diameter is little, twisted wire smooth surface, can reduce icing layer thickness and weight, there is the characteristics such as good anti-ice-snow, anticorrosive and anti-load, therefore can improve to greatest extent the reliability of transmission line safe operation, promoting the use of of the molded line Wire twisting frame hollow wire of various different sizes, reliability and the protection that will greatly improve electric power netting safe running, will have obvious economic results in society.
Brief description of the drawings
Fig. 1 is schematic cross-section of the present invention.
Description of reference numerals: 1-steel core; 2-SZ shape aluminium alloy wire.
Embodiment
Below in conjunction with drawings and Examples, content of the present invention is described further.
As shown in Figure 1, the present invention is the JLHA2X/G1A-1035/75 steel-core-aluminium alloy molded line twisted wire of SZ tee section structure, by steel core 1 and SZ shape aluminium alloy wire 2 stranded forming, its concrete specification is by 19/ Φ 2.24 galvanized steel wires and 10/ Φ 4.45(equivalent diameter), 14/ Φ 4.56(equivalent diameter), 18/ Φ 4.56(equivalent diameter) and 22/ Φ 4.56(equivalent diameter) stranded the forming of high strength SZ shape aluminium alloy wire, the external diameter of their correspondences is respectively Φ 11.20, Φ 18.30, Φ 25.40, Φ 32.40 and Φ 39.50, wherein Φ 39.50 is molded line twisted wire external diameter, than plain conductor external diameter, 43.60mm has reduced 4.10mm, alleviate the icing weight of wire.
The manufacturing process of JLHA2X/G1A-1035/75 steel-core-aluminium alloy molded line twisted wire is as follows:
(1) preparation meets the high-strength aluminum alloy liquid composition of high-strength aluminum alloy bar electric conductivity and mechanical and physical performance; Following al alloy component is controlled in suitable scope, as Si0.5～0.7%, Mg0.6～0.9%.
(2) the special process processing of transmission losses while high-strength aluminum alloy liquid being adopted to raising conductance, the operation of reduction circuit;
(i) carry out boronation processing: remove Mn, Cr, V, Ti in aluminium alloy, improve conductance.
(ii) increase iron processing: the tensile strength that further improves aluminium alloy
(iii) degasification slagging-off is processed: remove hydrogen and the small slag particle of aluminum alloy melt, purifying aluminum alloy liquid.
(iv) filtration treatment: further remove the fine particle in aluminum alloy melt.
(3) the continuous casting and rolling rolling final temperature of high-strength aluminum alloy bar is controlled in 100 DEG C;
(4), by SZ shape high-strength aluminum alloy bracing wire mould, adopt high speed molded line drawing machine to draw high-strength aluminum alloy SZ shape line;
(5) adopt the Ф 630/84B type frame type stranding machine system of twisting.
Claims (3)
1. steel-core-aluminium alloy molded line Wire twisting frame hollow wire, described conductor cross-section is SZ shape, it is characterized in that: described wire diameter is not more than 39.60mm.
2. a steel-core-aluminium alloy molded line Wire twisting frame hollow wire manufacturing process as claimed in claim 1, is characterized in that:
(1) preparation meets the high-strength aluminum alloy liquid composition of high-strength aluminum alloy bar electric conductivity and mechanical and physical performance; Following al alloy component is controlled in suitable scope, as Si0.5～0.7%, Mg0.6～0.9%.
(2) the special process processing of transmission losses while high-strength aluminum alloy liquid being adopted to raising conductance, the operation of reduction circuit;
(i) carry out boronation processing: remove Mn, Cr, V, Ti in aluminium alloy, improve conductance.
(ii) increase iron processing: the tensile strength that further improves aluminium alloy
(iii) degasification slagging-off is processed: remove hydrogen and the small slag particle of aluminum alloy melt, purifying aluminum alloy liquid.
(iv) filtration treatment: further remove the fine particle in aluminum alloy melt.
(3) the continuous casting and rolling rolling final temperature of high-strength aluminum alloy bar is controlled in 100 DEG C;
(4), by SZ shape high-strength aluminum alloy bracing wire mould, adopt high speed molded line drawing machine to draw high-strength aluminum alloy SZ shape line;
(5) adopt the frame type stranding machine system of twisting.
3. steel-core-aluminium alloy molded line Wire twisting frame hollow wire manufacturing process as claimed in claim 2, is characterized in that: pre twist is installed on described frame type stranding machine and prevents high-strength aluminum alloy SZ shape line equipment for supporting patient with burn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410040202.9A CN103886996B (en) | 2014-01-27 | 2014-01-27 | Steel-core-aluminium alloy molded line Wire twisting frame hollow wire and manufacturing process thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410040202.9A CN103886996B (en) | 2014-01-27 | 2014-01-27 | Steel-core-aluminium alloy molded line Wire twisting frame hollow wire and manufacturing process thereof |
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| CN103886996A true CN103886996A (en) | 2014-06-25 |
| CN103886996B CN103886996B (en) | 2016-06-29 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107068300A (en) * | 2017-03-28 | 2017-08-18 | 江苏藤仓亨通光电有限公司 | A kind of manufacturing process of high-strength high-conductivity copper-magnesium alloy strand |
| CN111128445A (en) * | 2019-12-06 | 2020-05-08 | 远东电缆有限公司 | Aluminum-manganese alloy steel-clad reinforced overhead conductor and preparation process thereof |
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| CN101200783A (en) * | 2006-12-11 | 2008-06-18 | 上海中天铝线有限公司 | Method for manufacturing high-strength aluminium-magnesium-slicon alloy wire |
| CN101956103A (en) * | 2010-10-20 | 2011-01-26 | 云南铝业股份有限公司 | High strength alloy round aluminium rod and production method thereof |
| CN201868153U (en) * | 2010-09-15 | 2011-06-15 | 武汉电缆集团有限公司 | Device for preventing torsion and turning in processing of shaped overhead conductors |
| CN202134262U (en) * | 2011-07-27 | 2012-02-01 | 郑州华力电缆有限公司 | Anti-ice-snow overhead conductor |
| EP2639797A1 (en) * | 2012-03-12 | 2013-09-18 | Nexans | Electric transport cable, in particular for an overhead line |
-
2014
- 2014-01-27 CN CN201410040202.9A patent/CN103886996B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101200783A (en) * | 2006-12-11 | 2008-06-18 | 上海中天铝线有限公司 | Method for manufacturing high-strength aluminium-magnesium-slicon alloy wire |
| CN201868153U (en) * | 2010-09-15 | 2011-06-15 | 武汉电缆集团有限公司 | Device for preventing torsion and turning in processing of shaped overhead conductors |
| CN101956103A (en) * | 2010-10-20 | 2011-01-26 | 云南铝业股份有限公司 | High strength alloy round aluminium rod and production method thereof |
| CN202134262U (en) * | 2011-07-27 | 2012-02-01 | 郑州华力电缆有限公司 | Anti-ice-snow overhead conductor |
| EP2639797A1 (en) * | 2012-03-12 | 2013-09-18 | Nexans | Electric transport cable, in particular for an overhead line |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107068300A (en) * | 2017-03-28 | 2017-08-18 | 江苏藤仓亨通光电有限公司 | A kind of manufacturing process of high-strength high-conductivity copper-magnesium alloy strand |
| CN111128445A (en) * | 2019-12-06 | 2020-05-08 | 远东电缆有限公司 | Aluminum-manganese alloy steel-clad reinforced overhead conductor and preparation process thereof |
| CN111128445B (en) * | 2019-12-06 | 2022-03-08 | 远东电缆有限公司 | Aluminum-manganese alloy steel-clad reinforced overhead conductor and preparation process thereof |
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| CN103886996B (en) | 2016-06-29 |
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Address after: 510620 Tianhe Road 116, Guangdong, Guangzhou Applicant after: Super-High Transmission Co., China South Electric-Net Co., Ltd. Applicant after: Hangzhou Cable Co., Ltd. Applicant after: China Power Engineering Consulting Group Southwest Electric Power Design Institute Co., Ltd. Address before: 510620 Tianhe Road 116, Guangdong, Guangzhou Applicant before: Super-High Transmission Co., China South Electric-Net Co., Ltd. Applicant before: Hangzhou Cable Co., Ltd. Applicant before: Southwest Electric Power Design Institute of China Power Engineering Consulting Group Corporation |
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