CN103457216A - Large steel anchor type strain clamp of aluminum-alloy-cored aluminum formed wire conductor liner tube - Google Patents
Large steel anchor type strain clamp of aluminum-alloy-cored aluminum formed wire conductor liner tube Download PDFInfo
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- CN103457216A CN103457216A CN201310383498XA CN201310383498A CN103457216A CN 103457216 A CN103457216 A CN 103457216A CN 201310383498X A CN201310383498X A CN 201310383498XA CN 201310383498 A CN201310383498 A CN 201310383498A CN 103457216 A CN103457216 A CN 103457216A
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Abstract
The invention provides a large steel anchor type strain clamp of an aluminum-alloy-cored aluminum formed wire conductor liner tube. The strain clamp comprises a large steel anchor and an aluminum tube, wherein the large steel anchor and the aluminum tube are arranged in the coaxial direction, and an aluminum-alloy-cored aluminum formed wire is arranged in the aluminum tube. The strain clamp is characterized in that one end of the large steel anchor is an oval ring, the other end of the large steel anchor is provided with a hole in the axial direction, the outer side of the middle of the large steel anchor is provided with a thread, an aluminum alloy core of the aluminum-alloy-cored aluminum formed wire is arranged in the hole, and the aluminum liner tube is disposed between the aluminum alloy core and the hole. Compared with the prior art, the large steel anchor type strain clamp of the aluminum-alloy-cored aluminum formed wire conductor liner tube enables the aluminum alloy core of the conductor to be arranged in the large steel anchor and is connected with the large steel anchor in a hydraulic and pressed mode, and the conductor can be effectively and stably held through the large steel anchor. By means of the hydraulic and pressed connection, the process is mature, pressed connection quality is easy to guarantee, and the pressed connection problem of the aluminum-alloy-cored aluminum formed wire is solved.
Description
Technical field
The present invention relates to a kind of strain clamp, specifically relate to the large steel anchor of a kind of molded line of the aluminium alloy core, aluminium for overhead transmission line wire internal lining pipe type strain clamp.
Background technology
The electric energy that generator sends, after transformer boosts, then is realized transmission of electricity through the control appliances such as circuit breaker accesses transmission line.By version, transmission line is divided into overhead transmission line and cable line.Overhead transmission line is erected at and groundly consists of overhead line structures, wire, insulator, line hardware, bracing wire, pole and tower foundation, earthing device etc.According to the character of carrying electric current, transmission of electricity is divided into ac transmission and direct current transportation.At first successfully realized direct current transportation the eighties in 19th century.But because the voltage of direct current transportation had been difficult to continue to improve under technical conditions at that time, so that ability to transmit electricity and benefit are restricted.In 19 end of the centurys, direct current transportation is progressively replaced by ac transmission.The success of ac transmission, welcome the electrified social New Times in 20th century.Since the sixties in 20th century, direct current transportation has again new development, with ac transmission, matches, and forms the electric power system that alternating current-direct current mixes.
The process of transmission of electricity is exactly the direction transmission of electromagnetic energy along transmission line, and the circuit ability to transmit electricity is subject to the domination of the various rules of electromagnetic field and circuit.With ground potential (zero potential) as a reference point, line conductor all need the high voltage in being applied by power supply under, be called transmission voltage.Transmission line is determined maximum delivery power after considering technology, the every factor of economic dispatch, is called the transmission capacity of this circuit.Transmission capacity substantially to square being directly proportional of transmission voltage.Therefore, improving transmission voltage is the technical way of realizing large capacity or long distance power transmission, and the level of raising is the outstanding feature of technology of transmission of electricity development level.
From evolution, the transmission voltage grade approximately increases with the relation of twice.When energy output increases to 4 times of left and right, a new higher electric pressure appears.Usually the transmission line of 35～220KV is called to high-tension line (HV), the transmission line of 330～750KV is called supertension line (EHV), and the above transmission line of 750KV is called extra high voltage line (UHV).In general, the transmission of electric energy capacity is larger, and the electric pressure that circuit adopts is just higher.Adopt EHV transmission, can effectively reduce line loss, reduce the circuit unit price, account for less arable land, be fully used in the circuit corridor.
The strain clamp of using in transmission line is that wire or lightning conducter are fixed on to a kind of folder on the strain insulator string of non-rectilinear shaft tower, plays the anchoring effect, also is used for fixing the bracing wire of bracing wire shaft tower, is the important gold utensil in transmission line.
Along with the development of technology, the application of extra high voltage line transmission of electricity has promoted the conveying capacity of China's electrical network greatly.The data that provide according to State Grid Corporation of China show, a loop extra-high voltage direct-current electrical network can send 6,000,000 kilowatts of electric weight, is equivalent to 5 to 6 times of existing 500 Kilovolt Direct Current nets, and the power transmission distance is also 2 to 3 times of the latter, so efficiency improves greatly.In addition, according to State Grid Corporation of China's measuring and calculating, carry the electric weight of same power, can be than the land resource that adopts 500 kilovolts of supertension lines savings 60% if adopt extra high voltage line to transmit electricity.It is target that UHV Transmission Engineering be take construction " environmentally friendly " engineering, optimizes the design of engineering comprehensively, and strict guarantee electric field, magnetic field, audible noise and radio interference level meet standard-required.For this reason, if design adopts plain conductor, certainly will to strengthen conductor cross-section and increase the division radical of wire, certainly will increase like this physical dimension of use amount, steel tower of wire and bus and circuit width of corridor etc., thereby strengthen construction investment.Under the prerequisite that meets transmission line capability and line project requirement, design adopts a kind of new structure wire that guarantees the power transmission conductor current capacity, guarantee sectional area of wire, reduce the diameter of wire, can greatly save conductor material, and make the external diameter and surperficial transmission of electricity and the corona requirement that can meet circuit of wire, greatly reduce total weight and the wire division radical of wire, reduce steel tower load and construction weight, thereby significantly reduced track investment.For this reason, design adopts aluminium alloy core, aluminium molded line wire, to optimize steel tower and line design, reduces construction investment.
Aluminium alloy core, aluminium molded line wire, as a kind of wire of new structure, needs a kind of strain clamp of special construction to coordinate with it, effectively aluminium alloy core, aluminium molded line wire is stablized to gripping, transmits power and electric loading simultaneously.
Summary of the invention
For meeting the needs of aluminium alloy core, aluminium molded line wire transmission line, the invention provides the large steel anchor of a kind of aluminium alloy core, aluminium molded line wire internal lining pipe type strain clamp, can stablize effectively and grip aluminium alloy core, aluminium molded line wire, can also transmit power and electric loading simultaneously.
The objective of the invention is to adopt following technical proposals to realize:
The large steel anchor of a kind of aluminium alloy core, aluminium molded line wire internal lining pipe provided by the invention type strain clamp, described strain clamp comprises large steel anchor and the aluminum pipe arranged along same axis direction, described aluminium alloy core, aluminium molded line is arranged in described aluminum pipe, its improvements are, one end of described large steel anchor is oval annulus, the other end is provided with hole along its axis direction, and the middle outside is provided with screw thread; The aluminium alloy core of described aluminium alloy core, aluminium molded line is arranged in described hole, between described aluminium alloy core and described hole, is provided with the aluminium bushing pipe, between described aluminium alloy core, aluminium molded line and described aluminum pipe, is provided with aluminum casing.
Wherein, the composition of described large steel anchor is carbon 0.07%～0.14% by weight percentage, silicon 0.17%～0.37%, and manganese 0.35%～0.65%, sulphur≤0.035%, phosphorus≤0.035%, chromium≤0.15%, nickel≤0.25%, copper≤0.25%, iron is surplus.
Wherein, the composition of described large steel anchor is by weight percentage: carbon 0.11%, and silicon 0.25%, manganese 0.54%, sulphur 0.022%, phosphorus≤0.018%, chromium≤0.09%, nickel≤0.15%, copper≤0.11%, iron is surplus.
Wherein, the tensile strength >=33MPa of described large steel anchor, hardness is HB133.
Wherein, described aluminium alloy core, aluminium bushing pipe and large steel anchor are that the fluid pressure type crimping is integrated.
Wherein, the composition of described aluminum pipe, aluminium bushing pipe and aluminum casing is silicon≤0.25% by weight percentage, copper≤0.05%, and magnesium≤0.05%, zinc≤0.07%, manganese≤0.05%, titanium≤0.05%, iron 0.00%～0.40%, aluminium is surplus.
Wherein, the composition of described aluminum pipe, aluminium bushing pipe and aluminum casing is by weight percentage: silicon 0.18%, and copper 0.03%, magnesium 0.02%, zinc 0.06%, manganese 0.04%, titanium 0.05%, iron 0.20%, aluminium is surplus.
Wherein, an end inboard of described aluminum pipe is provided with the screw thread be complementary with described large steel anchor, and the other end outside is provided with chamfering.
Wherein, the aluminum steel of described aluminum pipe, aluminum casing and aluminium alloy core, aluminium molded line is that the fluid pressure type crimping is integrated.
Compared with the prior art, the beneficial effect that the present invention reaches is:
1, the large steel anchor of aluminium alloy core, aluminium molded line wire internal lining pipe provided by the invention type strain clamp, adopt the fluid pressure type crimping, technical maturity, and crimp quality easily is protected, and has overcome the crimping problem of aluminium alloy core, aluminium molded line.
2, the large steel anchor of aluminium alloy core, aluminium molded line wire internal lining pipe provided by the invention type strain clamp, be arranged on large steel anchor by the aluminium alloy core of wire inner also by the fluid pressure type crimping, greatly improves effective, stable that large steel anchor grips wire.
3, the large steel anchor of aluminium alloy core, aluminium molded line wire internal lining pipe provided by the invention type strain clamp, the large steel anchor that adopts specific composition proportion to manufacture, its grip value can reach more than 90% of pull-off force of aluminium alloy core accumulation of wire, greatly improves effective, stable that large steel anchor grips aluminium alloy core, aluminium molded line wire.
4, the large steel anchor of aluminium alloy core, aluminium molded line wire internal lining pipe provided by the invention type strain clamp, rational in infrastructure, install conveniently, greatly improved operating efficiency.
5, the large steel anchor of aluminium alloy core, aluminium molded line wire internal lining pipe provided by the invention type strain clamp, the aluminum pipe of employing is except effectively bearing the pulling force of aluminum stranded wire of aluminum alloy core wire, conduction current that also can be good as electric conductor.
6, the large steel anchor of aluminium alloy core, aluminium molded line wire internal lining pipe provided by the invention type strain clamp arranges aluminum casing between aluminum pipe and wire, greatly improves effective, stable that aluminum pipe grips aluminium alloy core, aluminium molded line wire.
7, the large steel anchor of aluminium alloy core, aluminium molded line wire internal lining pipe provided by the invention type strain clamp arranges the aluminium bushing pipe between large steel anchor and aluminium alloy core, greatly improves effective, stable that aluminum pipe grips aluminium alloy core, aluminium molded line wire.
The accompanying drawing explanation
Fig. 1 is: aluminium alloy core, aluminium molded line conductor cross-section structural representation provided by the invention;
Fig. 2 is: assembling schematic diagram before the crimping of the large steel anchor of aluminium alloy core, aluminium molded line wire internal lining pipe provided by the invention type strain clamp;
Fig. 3 is: the structural representation of aluminum pipe provided by the invention;
Fig. 4 is: the structural representation of large steel anchor provided by the invention;
Fig. 5 is: the structural representation of aluminium bushing pipe provided by the invention;
Fig. 6 is: the structural representation of aluminum casing provided by the invention;
Fig. 7 is: after the crimping of the large steel anchor of aluminium alloy core, aluminium molded line wire internal lining pipe provided by the invention type strain clamp, assemble schematic diagram;
Wherein: 1, large steel anchor; 2, aluminum pipe; 3, aluminium bushing pipe; 4, aluminum casing; 5, aluminium alloy core, aluminium molded line wire; 6, aluminum steel; 7, aluminium alloy core.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
It is example that the present embodiment be take the large steel anchor of aluminium alloy core, aluminium molded line wire internal lining pipe type strain clamp, as shown in Figures 1 to 7, the large steel anchor of the aluminium alloy core, aluminium molded line wire internal lining pipe type strain clamp that the embodiment of the present invention provides comprises: large steel anchor 1, aluminum pipe 2, aluminium bushing pipe 3, aluminum casing 4, aluminium alloy core, aluminium molded line wire 5, aluminum steel 6, aluminium alloy core 7.
As shown in Figure 3, an end inboard of aluminum pipe 2 is provided with screw thread, and the other end outside is provided with chamfering.
As shown in Figure 4, an end of large steel anchor 1 is oval annulus, and the other end is provided with hole along its axis direction, and the middle outside is provided with the screw thread be complementary with aluminum pipe 2.
As shown in Figure 7, large steel anchor 1 is arranged on the end of thread of aluminum pipe 2; Aluminium alloy core, aluminium molded line wire 5 is arranged in aluminum pipe 2, its aluminium alloy core 7 is arranged in the hole of large steel anchor 1, be provided with aluminium bushing pipe 3 between large steel anchor 1 and aluminium alloy core 7, and by the crimping mode of hydraulic pressure, large steel anchor 1, aluminium bushing pipe 3 and aluminium alloy core 7 crimping be integrated; Simultaneously, between aluminum pipe 2 and aluminium alloy core, aluminium molded line wire 5, be provided with aluminum casing 4, aluminum pipe 2, aluminum casing 4 and aluminum steel 6 are integrated by the crimping mode of hydraulic pressure.
Wherein, the composition of large steel anchor 1 is by weight percentage: carbon 0.11%, and silicon 0.25%, manganese 0.54%, sulphur 0.022%, phosphorus≤0.018%, chromium≤0.09%, nickel≤0.15%, copper≤0.11%, iron is surplus; Tensile strength >=33Mpa, hardness HB133.
Wherein, the composition of aluminum pipe 2, aluminium bushing pipe 3 and aluminum casing 4 is by weight percentage: silicon 0.18%, and copper 0.03%, magnesium 0.02%, zinc 0.06%, manganese 0.04%, titanium 0.05%, iron 0.20%, aluminium is surplus.
The hardness HB60 of aluminium alloy core 7, by the repeated comparative test independent to aluminium alloy core 7, can obtain, the grip value of ordinary steel anchor reaches 85.4%～89.3% of aluminium alloy core 7 accumulation pull-off forces, and the grip value of large steel anchor 1 provided by the invention can reach aluminium alloy core 7 more than 90% of pull-off force of accumulation.
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit, although with reference to above-described embodiment, the present invention is had been described in detail, those of ordinary skill in the field are to be understood that: still can modify or be equal to replacement the specific embodiment of the present invention, and do not break away from any modification of spirit and scope of the invention or be equal to replacement, it all should be encompassed in the middle of claim scope of the present invention.
Claims (9)
1. the large steel anchor of an aluminium alloy core, aluminium molded line wire internal lining pipe type strain clamp, described strain clamp comprises large steel anchor and the aluminum pipe arranged along same axis direction, described aluminium alloy core, aluminium molded line is arranged in described aluminum pipe, it is characterized in that, one end of described large steel anchor is oval annulus, the other end is provided with hole along its axis direction, and the middle outside is provided with screw thread; The aluminium alloy core of described aluminium alloy core, aluminium molded line is arranged in described hole, between described aluminium alloy core and described hole, is provided with the aluminium bushing pipe, between described aluminium alloy core, aluminium molded line and described aluminum pipe, is provided with aluminum casing.
2. the large steel anchor of aluminium alloy core, aluminium molded line wire internal lining pipe as claimed in claim 1 type strain clamp, it is characterized in that, the composition of described large steel anchor is carbon 0.07%～0.14% by weight percentage, silicon 0.17%～0.37%, manganese 0.35%～0.65%, sulphur≤0.035%, phosphorus≤0.035%, chromium≤0.15%, nickel≤0.25%, copper≤0.25%, iron is surplus.
3. the large steel anchor of aluminium alloy core, aluminium molded line wire internal lining pipe as claimed in claim 2 type strain clamp, it is characterized in that, the composition of described large steel anchor is by weight percentage: carbon 0.11%, silicon 0.25%, manganese 0.54%, sulphur 0.022%, phosphorus≤0.018%, chromium≤0.09%, nickel≤0.15%, copper≤0.11%, iron is surplus.
4. the large steel anchor of aluminium alloy core, aluminium molded line wire internal lining pipe as claimed in claim 1 type strain clamp, is characterized in that, the tensile strength >=33MPa of described large steel anchor, and hardness is HB133.
5. the large steel anchor of aluminium alloy core, aluminium molded line wire internal lining pipe as claimed in claim 1 type strain clamp, is characterized in that, described aluminium alloy core, aluminium bushing pipe and large steel anchor are that the fluid pressure type crimping is integrated.
6. the large steel anchor of aluminium alloy core, aluminium molded line wire internal lining pipe as claimed in claim 1 type strain clamp, it is characterized in that, the composition of described aluminum pipe, aluminium bushing pipe and aluminum casing is silicon≤0.25% by weight percentage, copper≤0.05%, magnesium≤0.05%, zinc≤0.07%, manganese≤0.05%, titanium≤0.05%, iron 0.00%～0.40%, aluminium is surplus.
7. the large steel anchor of aluminium alloy core, aluminium molded line wire internal lining pipe as claimed in claim 6 type strain clamp, it is characterized in that, the composition of described aluminum pipe, aluminium bushing pipe and aluminum casing is by weight percentage: silicon 0.18%, copper 0.03%, magnesium 0.02%, zinc 0.06%, manganese 0.04%, titanium 0.05%, iron 0.20%, aluminium is surplus.
8. the large steel anchor of aluminium alloy core, aluminium molded line wire internal lining pipe as claimed in claim 1 type strain clamp, is characterized in that, an end inboard of described aluminum pipe is provided with the screw thread be complementary with described large steel anchor, and the other end outside is provided with chamfering.
9. the large steel anchor of aluminium alloy core, aluminium molded line wire internal lining pipe as claimed in claim 1 type strain clamp, is characterized in that, the aluminum steel of described aluminum pipe, aluminum casing and aluminium alloy core, aluminium molded line is that the fluid pressure type crimping is integrated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310383498XA CN103457216A (en) | 2013-08-29 | 2013-08-29 | Large steel anchor type strain clamp of aluminum-alloy-cored aluminum formed wire conductor liner tube |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310383498XA CN103457216A (en) | 2013-08-29 | 2013-08-29 | Large steel anchor type strain clamp of aluminum-alloy-cored aluminum formed wire conductor liner tube |
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| CN103457216A true CN103457216A (en) | 2013-12-18 |
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| CN201310383498XA Pending CN103457216A (en) | 2013-08-29 | 2013-08-29 | Large steel anchor type strain clamp of aluminum-alloy-cored aluminum formed wire conductor liner tube |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104409137A (en) * | 2014-12-03 | 2015-03-11 | 江苏东峰电缆有限公司 | Aluminum alloy core forming aluminum stranded wire for ultrahigh-voltage direct current circuit |
| CN105743041A (en) * | 2016-03-23 | 2016-07-06 | 远东电缆有限公司 | Stranded composite core strain fitting for smart power grid and connection method for stranded composite core strain fitting |
| CN108666956A (en) * | 2018-04-28 | 2018-10-16 | 中复碳芯电缆科技有限公司 | A kind of strands strengthening core twisted wire strain clamp |
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| CN102237660A (en) * | 2011-06-28 | 2011-11-09 | 广州鑫源恒业电力线路器材有限公司 | Strain clamp of aluminum alloy core aluminum stranded wire |
| CN102810834A (en) * | 2012-08-28 | 2012-12-05 | 扬州飞鸿电材有限公司 | Strain clamp and method for processing same |
| CN203406579U (en) * | 2013-08-29 | 2014-01-22 | 国家电网公司 | Aluminum alloy core aluminum type wire lining pipe large steel anchor type strain clamp |
-
2013
- 2013-08-29 CN CN201310383498XA patent/CN103457216A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102237660A (en) * | 2011-06-28 | 2011-11-09 | 广州鑫源恒业电力线路器材有限公司 | Strain clamp of aluminum alloy core aluminum stranded wire |
| CN102810834A (en) * | 2012-08-28 | 2012-12-05 | 扬州飞鸿电材有限公司 | Strain clamp and method for processing same |
| CN203406579U (en) * | 2013-08-29 | 2014-01-22 | 国家电网公司 | Aluminum alloy core aluminum type wire lining pipe large steel anchor type strain clamp |
Non-Patent Citations (1)
| Title |
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| 中国标准出版社第四编辑室: "《输变电技术常用标准汇编-电力金具与绝缘子卷》", 31 December 2010, article "DL/T 757-2009", pages: 684-686 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104409137A (en) * | 2014-12-03 | 2015-03-11 | 江苏东峰电缆有限公司 | Aluminum alloy core forming aluminum stranded wire for ultrahigh-voltage direct current circuit |
| CN105743041A (en) * | 2016-03-23 | 2016-07-06 | 远东电缆有限公司 | Stranded composite core strain fitting for smart power grid and connection method for stranded composite core strain fitting |
| CN108666956A (en) * | 2018-04-28 | 2018-10-16 | 中复碳芯电缆科技有限公司 | A kind of strands strengthening core twisted wire strain clamp |
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Effective date of registration: 20160708 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Applicant after: State Grid Corporation of China Applicant after: China Electric Power Research Institute Applicant after: State Grid Zhejiang Electric Power Company Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Applicant before: State Grid Corporation of China Applicant before: China Electric Power Research Institute |
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Application publication date: 20131218 |
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