CN201233739Y

CN201233739Y - Square insulation aluminum conductor used for dry current limiting reactor and trap

Info

Publication number: CN201233739Y
Application number: CNU200820075487XU
Authority: CN
Inventors: 张金生; 董树林; 赵庆霞; 聂有理
Original assignee: TIANJIN JINGWEI ELECTRICAL MATERIAL CO Ltd
Current assignee: Tianjin Jingwei Electric Wire Co., Ltd.
Priority date: 2008-07-28
Filing date: 2008-07-28
Publication date: 2009-05-06
Anticipated expiration: 2018-07-28

Abstract

A square-cut, insulating aluminium conducting wire used for a dry-type current limiting reactor or a wave trapper relates to an electromagnetic wire. The conducting wire can be wound to form a coil which can allow an electrical current of above 2000 A to flow through and can be used for the reactor or the wave trapper. Moreover, the conducting wire has the advantages of easy manufacture and low cost, and is made of aluminium instead of copper. The conducting wire comprises a square-cut aluminium stranded wire, a polyester film layer, an imine film layer and a compound cloth layer; the square-cut stranded wire includes three layers formed by stranding zero-defect round aluminium wires in the same direction, wherein, an inner layer includes a zero-defect round aluminium wire in the central position, and an intermediate layer includes six zero-defect round aluminium wire wrapped outside the inner layer, and an outer layer includes twelve zero-defect round aluminium wire wrapped outside the intermediate layer, and the inner layer, the intermediate layer and the outer layer are closely stranded and arranged, and the section of the square-cut aluminium stranded wire is square; the polyester film layer, the imine film layer and the compound cloth layer are wrapped outside the square-cut aluminium stranded wire in sequence; and the polyester film layer is formed by wrapping a plurality of layers of polyester film in a half-folded-packaging manner, and the imine film layer is formed by wrapping a plurality of layers of imine film in a half-folded-packaging manner, and the compound cloth layer is formed by wrapping a plurality of layers of non-woven cloth with insulating membrane in a half-folded-packaging manner. The coil made of the conducting wire can be applied to the dry-type current limiting reactor or the wave trapper for power network transmission.

Description

A kind of pressure side's insulation aluminum conductor that is used for dry type current limiting reactor and trap

Technical field:

The utility model relates to a kind of electromagnetic wire.Particularly a kind of pressure side's insulation aluminum conductor that is used for dry type current limiting reactor and trap, it is to be used to manufacture the dry type current limiting reactor of B level, F level, H class F insulation and pressure side's insulation aluminium stranded conductor of the used coil of trap.

Background technology:

Dry type current limiting reactor and trap are the piths that electrical network is carried the electrical engineering regulate electrical current.Because they all are connected in the circuit, so the electric current that requirement is passed through is very big, generally more than 2000A.

For this reason, the coil of dry type current limiting reactor or trap adopts heavy in section film copper-clad lead or the coiling of film alclad lead long-pending, sub-thread to form more at present, because the film copper-clad lead or the film alclad lead of sub-thread are thicker, therefore, labour intensity is big during coiling, and the overall dimension of the coil of coiled is also very big.

Simultaneously, owing to the folder ash that aluminium self exists, add defectives such as slag, pipe, burr, be difficult to avoid in the manufacture process of film alclad lead, use it to turn to coil after, in the high tension transmission problems such as local overheating, sparkover that are easy to generate in service, cause the accident.Therefore dry-type air-core current limiting reactor and trap are most of in the past uses the copper cash coiling, and cost is very high.

Summary of the invention:

The utility model aims to provide a kind of pressure side's insulation aluminum conductor that is used for dry type current limiting reactor and trap, uses the coil of the utility model coiling reactor or trap, is applicable to dry type current limiting reactor and trap by the above electric current of 2000A; It is easy to make, and cost is low, and replaces copper material with aluminium, has saved copper material.

The utility model comprises pressure side's aluminium stranded conductor, polyester rete, imines rete and compound layer of cloth; Wherein, the side's of pressure aluminium stranded conductor comprises 19 zero defect circle aluminum steels that are twisted into three layers in the same way; Its nexine is a zero defect circle aluminum steel on the center; The middle level is coated on the nexine outside for six roots of sensation zero defect circle aluminum steel; Skin is 12 zero defect circle aluminum steels, is coated on the outside, middle level; Nexine, middle level, outer field zero defect circle aluminum steel closely are foursquare pressure side aluminium stranded conductor in the stranded cross section that is arranged in; Coating polyester rete, imines rete and compound layer of cloth successively in pressure side's aluminium stranded conductor outside; The polyester rete, imines rete and compound layer of cloth are respectively with the polyester film, and the imines film coats multilayer with the non woven fabric half-stack package that has insulation film and constitutes, as shown in Figure 1.

The utility model can be by the temperature resistant grade requirement, and with the polyester film, the imines film coats the different numbers of plies with the Compound Fabric half-stack package, becomes polyester rete, imines rete and the compound layer of cloth of B level, F level, H level.

Compound layer of cloth of the present utility model can be the non woven fabric that has the epoxy resin bonding layer at inner face.

Zero defect described in the utility model circle aluminum steel be meant round aluminum steel in pulling process, carry out after nondestructive inspection, the monitoring in real time, eliminate the defective round aluminum steel in aluminium lead Central Plains.

Pressure side described in the utility model aluminium stranded conductor is meant that the round aluminium stranded conductor process of 19 of above-mentioned arrangement rolling forging die is pressed into a limit, the b limit is foursquare pressure side aluminium stranded conductor than the cross section that is 1～1.2 scope, the distortion of circle aluminum steel is minimum in the side's of pressure aluminium stranded conductor, space minimum between line, the summation in the section ratio circle aluminium stranded conductor inside conductor cross section after suppressing is reduced about 10%, make the lead typing, the cross section is square.

Good effect of the present utility model

1, the utility model is by the stranded pressure side moulding of many zero defect circle aluminum steels, and the wire table area increases, and utilizes the conductive capability of the kelvin effect increase lead of electric current.

2, pliability of the present utility model is higher than prismatic single cord.The utility model after the moulding of the side of pressure helps the coiling of coil, has alleviated labour intensity; The coil of institute's coiling is compared with the coil of the single cord coiling of same function, and overall dimension is dwindled.

3, have the outermost compound layer of cloth that the non woven fabric of epoxy resin bonding layer constitutes by inner face, behind non woven fabric and epoxy resin bonding, because the crosslinking curing of epoxy resin, make that the coil of the utility model coiling is indeformable, the good integrity of made reactor, not easy to crack, prolong reactor useful life;

4, because this lead uses zero defect circle aluminum steel to solve the defective of aluminum conductor, on the dry type current limiting reactor of high pressure and trap, can realize with aluminium on resource, meeting the national conditions of the rich aluminium of the poor copper of China for copper, in the development construction of electrical network, save substantial contribution, help development and national economy.

In sum, the utility model is a kind of pressure side's insulation aluminum conductor that is used for dry type current limiting reactor and trap, uses the coil of the utility model coiling reactor or trap, is applicable to dry type current limiting reactor and trap by the above electric current of 2000A; It is easy to make, and cost is low, and replaces copper material with aluminium, has saved copper material.

Description of drawings:

Fig. 1 is the utility model schematic diagram.

Among the figure:

The 1-side of pressure aluminium stranded conductor, 2-polyester rete, 3-imines rete, the compound layer of cloth of 4-, 5-zero defect circle aluminum steel, 6-nexine, 7-middle level, 8-skin.

Embodiment:

Embodiment 1

The utility model with the used coil of dry type current limiting reactor of coiling 35KV high pressure is an example.

With the zero defect of 19 diameter 3.08mm circle aluminum steel 5, according to 6 one of nexines, middle level 7 six roots of sensation, outer 80 two the tight stranded arrangement of order, its nexine 6 is on the center, and middle level 7 is coated on nexine 6 outsides; Outer 8 are coated on 7 outsides, middle level; Nexine 6, middle level 7, outer 8 tight stranded arrangements, its cross section is square; Be twisted into three layers in the same way, pass through roll extrusion again, mold pressing after the typing, becomes pressure side's aluminium stranded conductor 1 of 17.30 * 12.91mm, and its a limit, b limit ratio are 1.1.

Should carry out the half-stack package coating with polyester film by pressure side's aluminium stranded conductor 1, packet stack rate is 50%, constitutes polyester rete 2; Coat with the polyimide film half-stack package again, packet stack rate is 50%, constitute imines rete 3, use the compound Compound Fabric of polyester-imide film and non woven fabric to carry out the half-stack package coating pressure side's aluminium stranded conductor 1 that coats polyester rete 2, imines rete 3 successively, packet stack rate is 50%, constitute compound layer of cloth 4, and monitor the back in real time through high pressure and receive on the bobbin by permanent tension force admission machine and whole winding displacement machine winding displacement.

Reach Beijing Q/DL01.JN3-2001 after testing about the side's of pressure insulation aluminium stranded conductor technical conditions.

Claims

1, a kind of pressure side's insulation aluminum conductor that is used for dry type current limiting reactor and trap is characterized in that comprising pressure side's aluminium stranded conductor, polyester rete, imines rete and compound layer of cloth; Wherein, the side's of pressure aluminium stranded conductor comprises 19 zero defect circle aluminum steels that are twisted into three layers in the same way; Its nexine is a zero defect circle aluminum steel on the center; The middle level is coated on the nexine outside for six roots of sensation zero defect circle aluminum steel; Skin is 12 zero defect circle aluminum steels, is coated on the outside, middle level; Nexine, middle level, outer field zero defect circle aluminum steel closely are foursquare pressure side aluminium stranded conductor in the stranded cross section that is arranged in; Coating polyester rete, imines rete and compound layer of cloth successively in pressure side's aluminium stranded conductor outside; The polyester rete, imines rete and compound layer of cloth are respectively with the polyester film, and the imines film coats multilayer with the non woven fabric half-stack package that has insulation film and constitutes.