CN203398711U - Lining-pipe large-steel-anchor type strain clamp for aluminum alloy core aluminum stranded wire - Google Patents
Lining-pipe large-steel-anchor type strain clamp for aluminum alloy core aluminum stranded wire Download PDFInfo
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- CN203398711U CN203398711U CN201320531509.XU CN201320531509U CN203398711U CN 203398711 U CN203398711 U CN 203398711U CN 201320531509 U CN201320531509 U CN 201320531509U CN 203398711 U CN203398711 U CN 203398711U
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- alloy core
- stranded wire
- aluminum alloy
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Abstract
The utility model provides a lining-pipe large-steel-anchor type strain clamp for aluminum alloy core aluminum stranded wire. The strain clamp is arranged at an overhead power transmission line terminal, and is used for anchoring an aluminum alloy core aluminum stranded wire, and maintaining the electrical and mechanical properties of the aluminum alloy core aluminum stranded wire. The strain clamp comprises a large steel anchor and an aluminum tube which are arranged along the same axial direction, wherein the aluminum alloy core aluminum stranded wire is arranged in the aluminum tube. The strain clamp is improved in that: one end of the large steel anchor is provided with an oval ring, the other end is provided with a hole along the axial direction, and the outer side of the middle part is provided with threads; and an aluminum alloy core of the aluminum alloy core aluminum stranded wire is arranged in the hole, and an aluminum lining pipe is arranged between the aluminum alloy core and the hole. Compared with the prior art, and according to the lining-pipe large-steel-anchor type strain clamp for the aluminum alloy core aluminum stranded wire provided by the utility model, the aluminum alloy core is arranged in the interior of the large steel anchor and is subjected to hydraulic crimping, thereby greatly improving the effective and stable holding of conducting wires of the large steel anchor; and the hydraulic crimping is adopted, the technology is mature, the crimping quality is easily guaranteed, and the crimping problem of the aluminum alloy core aluminum stranded wire is overcame.
Description
Technical field
The utility model relates to a kind of strain clamp, is specifically related to a kind of large steel anchor of aluminum stranded wire of aluminum alloy core internal lining pipe type strain clamp for overhead transmission line.
Background technology
The electric energy that generator sends, after transformer boosts, then is realized transmission of electricity through the control appliance such as circuit breaker access transmission line.By version, transmission line is divided into overhead transmission line and cable line.Overhead transmission line is erected at and groundly overhead line structures, wire, insulator, line hardware, bracing wire, pole and tower foundation, earthing device etc., consists of.According to the character of carrying electric current, transmission of electricity is divided into ac transmission and direct current transportation.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, has welcome the electrified social New Times in 20th century.Since the sixties in 20th century, direct current transportation has again new development, matches with ac transmission, forms the electric power system that alternating current-direct current mixes.
The process of transmission of electricity is exactly that electromagnetic energy transmits along the direction of transmission line, and 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, transmission voltage grade approximately increases with the relation of twice.When energy output increases to 4 times of left and right, there is a new higher electric pressure.Conventionally 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 transmission line more than 750KV is called extra high voltage line (UHV).In general, 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 circuit unit price, account for less arable land, be fully used in 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 anchorage effect, is also 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 that ，Yi loop extra-high voltage direct-current electrical network can send 6,000,000 kilowatts of electric weight, are equivalent to 5 to 6 times of existing 500 Kilovolt Direct Current nets, and power transmission distance is also 2 to 3 times of the latter, so efficiency improves greatly.In addition ，Ju State Grid Corporation of China measuring and calculating, carries 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 use amount of wire and bus, the physical dimension of steel tower and circuit width of corridor etc., thereby strengthen construction investment.Meeting under the prerequisite of transmission line capability and line project requirement, design adopts a kind of new structure wire that guarantees 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.
Aluminum stranded wire of aluminum alloy core, as a kind of wire of new structure, needs a kind of strain clamp of special construction to coordinate with it, effectively aluminum stranded wire of aluminum alloy core is stablized to gripping, transmits power and electric loading simultaneously.
Utility model content
For meeting the needs of aluminum stranded wire of aluminum alloy core wire transmission line, the purpose of this utility model is to provide the large steel anchor of a kind of aluminum stranded wire of aluminum alloy core internal lining pipe type strain clamp, can aluminum stranded wire of aluminum alloy core be stablized effectively and be gripped, can also transmit power and electric loading simultaneously.
The purpose of this utility model is to adopt following technical proposals to realize:
The large steel anchor of a kind of aluminum stranded wire of aluminum alloy core internal lining pipe type strain clamp that the utility model provides, described strain clamp is arranged on overhead transmission line terminal, for aluminum stranded wire of aluminum alloy core described in anchoring, and keep its electric, mechanical performance, comprise the large steel anchor and the aluminum pipe that along same axis direction, arrange, described aluminum stranded wire of aluminum alloy core is arranged in described aluminum pipe, its improvements are, described great Gang Mao one end is oval annulus, the other end is provided with hole along its axis direction, and middle outside is provided with screw thread; The aluminium alloy core of described aluminum stranded wire of aluminum alloy core is arranged in described hole, between described aluminium alloy core and described hole, is provided with aluminium bushing pipe.
Wherein, described aluminium alloy core, aluminium bushing pipe and large steel anchor are that fluid pressure type crimping is integrated.
Wherein, inner side, one end of described aluminum pipe is provided with the screw thread matching with described large steel anchor, and other end outside is provided with chamfering.
Wherein, the aluminum steel of described aluminum pipe and described aluminum stranded wire of aluminum alloy core is that fluid pressure type crimping is integrated.
Compared with prior art, the beneficial effect that the utility model reaches is:
1, the large steel anchor of the aluminum stranded wire of aluminum alloy core internal lining pipe type strain clamp that the utility model provides, adopts fluid pressure type crimping, technical maturity, and crimp quality is easily protected, and has overcome the crimping problem of aluminum stranded wire of aluminum alloy core.
2, the large steel anchor of the aluminum stranded wire of aluminum alloy core internal lining pipe type strain clamp that the utility model provides, is arranged on large steel anchor by the aluminium alloy core of wire inner also by fluid pressure type crimping, greatly improves effective, stable that large steel anchor grips wire.
3, the large steel anchor of the aluminum stranded wire of aluminum alloy core internal lining pipe type strain clamp that the utility model provides, the large steel anchor that adopts specific composition proportion to manufacture, its grip value can reach aluminium alloy core accumulation the more than 90% of pull-off force of wire, greatly improves effective, stable that large steel anchor grips aluminum stranded wire of aluminum alloy core.
4, the large steel anchor of the aluminum stranded wire of aluminum alloy core internal lining pipe type strain clamp that the utility model provides, rational in infrastructure, install conveniently, greatly improved operating efficiency.
5, the large steel anchor of the aluminum stranded wire of aluminum alloy core internal lining pipe type strain clamp that the utility model provides, the aluminum pipe of employing, also can be as the good conduction current of electric conductor except effectively bearing the pulling force of aluminum stranded wire of aluminum alloy core wire.
6, the large steel anchor of the aluminum stranded wire of aluminum alloy core internal lining pipe type strain clamp that the utility model provides, the aluminium bushing pipe arranging between large steel anchor and aluminium alloy core, greatly improves effective, stable that large steel anchor grips aluminum stranded wire of aluminum alloy core.
Accompanying drawing explanation
Fig. 1 is: the aluminum stranded wire of aluminum alloy core cross section structure schematic diagram that the utility model provides;
Fig. 2 is: assembling schematic diagram before the large steel anchor of the aluminum stranded wire of aluminum alloy core internal lining pipe type strain clamp crimping that the utility model provides;
Fig. 3 is: the structural representation of the aluminum pipe that the utility model provides;
Fig. 4 is: the structural representation of the large steel anchor that the utility model provides;
Fig. 5 is: the structural representation of the aluminium bushing pipe that the utility model provides;
Fig. 6 is: after the large steel anchor of the aluminum stranded wire of aluminum alloy core internal lining pipe type strain clamp crimping that the utility model provides, assemble schematic diagram;
Wherein: 1, large steel anchor; 2, aluminium bushing pipe; 3, aluminum pipe; 4, aluminum stranded wire of aluminum alloy core; 5, aluminium stranded conductor; 6, aluminium alloy core.
Embodiment
For above-mentioned purpose of the present utility model, feature and advantage can be become apparent more, below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail.
It is example that the present embodiment be take the large steel anchor of aluminum stranded wire of aluminum alloy core internal lining pipe type strain clamp, as shown in Figures 1 to 6, the large steel anchor of the aluminum stranded wire of aluminum alloy core internal lining pipe type strain clamp that the utility model embodiment provides comprises: large steel anchor 1, aluminium bushing pipe 2, aluminum pipe 3, aluminum stranded wire of aluminum alloy core 4, aluminium stranded conductor 5, aluminium alloy core 6.
As shown in Figure 3, inner side, one end of aluminum pipe 3 is provided with screw thread, and other end outside is provided with chamfering.
As shown in Figure 4, one end of large steel anchor 1 is oval annulus, and the other end is provided with hole along its axis direction, and middle outside is provided with the screw thread matching with aluminum pipe 3.
As shown in Figure 6, large steel anchor 1 is arranged on the end of thread of aluminum pipe 3; Aluminum stranded wire of aluminum alloy core 4 is arranged in aluminum pipe 3, and its aluminium alloy core 6 is arranged in the hole of large steel anchor 1, is provided with aluminium bushing pipe 2, and by the crimping mode of hydraulic pressure, large steel anchor 1, aluminium bushing pipe 2 and aluminium alloy core 6 crimping is integrated between large steel anchor 1 and aluminium alloy core 6; Meanwhile, aluminum pipe 3 and aluminum steel 5 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 aluminium bushing pipe 2 and aluminum pipe 3 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 6, by to aluminium alloy core 6, independent repeated comparative test can obtain, the grip value of ordinary steel anchor reaches 85.4%～89.3% of aluminium alloy core 6 accumulation pull-off forces, and the grip value of large steel anchor 1 provided by the invention can reach aluminium alloy core 6 accumulation the more than 90% of pull-off force.
Finally should be noted that: above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit, although the utility model is had been described in detail with reference to above-described embodiment, those of ordinary skill in the field are to be understood that: still can modify or be equal to replacement embodiment of the present utility model, and do not depart from any modification of the utility model spirit and scope or be equal to replacement, it all should be encompassed in the middle of claim scope of the present utility model.
Claims (4)
1. the large steel anchor of an aluminum stranded wire of aluminum alloy core internal lining pipe type strain clamp, described strain clamp is arranged on overhead transmission line terminal, for aluminum stranded wire of aluminum alloy core described in anchoring, and keep its electric, mechanical performance, comprise the large steel anchor and the aluminum pipe that along same axis direction, arrange, described aluminum stranded wire of aluminum alloy core is arranged in described aluminum pipe, it is characterized in that, described great Gang Mao one end is oval annulus, and the other end is provided with hole along its axis direction, and middle outside is provided with screw thread; The aluminium alloy core of described aluminum stranded wire of aluminum alloy core is arranged in described hole, between described aluminium alloy core and described hole, is provided with aluminium bushing pipe.
2. the large steel anchor of aluminum stranded wire of aluminum alloy core 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 fluid pressure type crimping is integrated.
3. the large steel anchor of aluminum stranded wire of aluminum alloy core internal lining pipe as claimed in claim 1 type strain clamp, is characterized in that, the inner side, one end of described aluminum pipe is provided with the screw thread matching with described large steel anchor, and other end outside is provided with chamfering.
4. the large steel anchor of aluminum stranded wire of aluminum alloy core internal lining pipe as claimed in claim 1 type strain clamp, is characterized in that, the aluminum steel of described aluminum pipe and described aluminum stranded wire of aluminum alloy core is that fluid pressure type crimping is integrated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320531509.XU CN203398711U (en) | 2013-08-29 | 2013-08-29 | Lining-pipe large-steel-anchor type strain clamp for aluminum alloy core aluminum stranded wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320531509.XU CN203398711U (en) | 2013-08-29 | 2013-08-29 | Lining-pipe large-steel-anchor type strain clamp for aluminum alloy core aluminum stranded wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203398711U true CN203398711U (en) | 2014-01-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320531509.XU Expired - Lifetime CN203398711U (en) | 2013-08-29 | 2013-08-29 | Lining-pipe large-steel-anchor type strain clamp for aluminum alloy core aluminum stranded wire |
Country Status (1)
| Country | Link |
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| CN (1) | CN203398711U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103457215A (en) * | 2013-08-29 | 2013-12-18 | 国家电网公司 | Large steel anchor type strain clamp of aluminum-alloy-cored aluminum strand liner tube |
-
2013
- 2013-08-29 CN CN201320531509.XU patent/CN203398711U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103457215A (en) * | 2013-08-29 | 2013-12-18 | 国家电网公司 | Large steel anchor type strain clamp of aluminum-alloy-cored aluminum strand liner tube |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140115 |
|
| CX01 | Expiry of patent term |