CN201359860Y

CN201359860Y - Paper covered copper-silver alloy composite conductor

Info

Publication number: CN201359860Y
Application number: CNU2009200364430U
Authority: CN
Inventors: 张小波; 陈玉平; 辛达春
Original assignee: WUXI HUANYU MAGNET WIRES CO Ltd
Current assignee: WUXI HUANYU MAGNET WIRES CO Ltd
Priority date: 2009-02-16
Filing date: 2009-02-16
Publication date: 2009-12-09
Anticipated expiration: 2019-02-16

Abstract

The utility model relates to a paper covered copper-silver alloy composite conductor, particularly to a novel winding wire structure used in a power transformer, and belongs to the technical field of coil winding wires. The composite conductor is characterized in that a copper-silver alloy uniphase melted layer, a fine silver layer, a monopack insulating layer are plated on copper-silver alloy basis material so as to form a wire core, and more than two wire cores are coated by a composite insulating layer through a bundling combination. The utility model increases the copper space factor of the winding of the transformer by using a sheet wire structure; and the recrystallization temperature and the creep deformation intensity of the winding wire are improved by using the copper-silver alloy material, so that the winding wire is provided with better electrical conductivity and mechanical strength. Experiments prove that the electrical conductivity of the composite conductor is up to 102% IACS, and the tensile strength thereof is up to 280MPs; by utilizing an alloy laminated structure, eddy currents produced during the operation of the transformer can be reduced, and the efficiency of the transformer can be improved; and compared with the increased cost, the improved performance of the transformer is more attractive.

Description

Paper bag Kufil composite conductor

Technical field

The utility model relates to a kind of paper bag Kufil composite conductor, and specifically a kind of novel power transformer winding wire structure belongs to coil windings line technology field.

Background technology

In prior art, the existing power transformer because its special operation condition demand does not change on the material for a long time, uses oxygen-free copper as conductor material, the limit that become such as conduction, heat conduction, intensity on the winding wire material with the winding wire material always.Have more excellent every performance though compare silver metal with copper, as a kind of precious metal, the price factor has restricted its use.

Summary of the invention

The purpose of this utility model is to overcome above-mentioned weak point, thereby provide a kind of paper bag Kufil composite conductor, it has better conductance and mechanical strength, utilizes the alloy hierarchy can reduce the eddy current of transformer generation in service, and can improve the efficient of transformer.

The technical scheme that provides according to the utility model, paper bag Kufil composite conductor comprises Kufil basis material, single bag insulating barrier, combined insulation layer, feature is: the single-phase melt layer of copper facing silver alloy, fine silver layer, single bag insulating barrier are formed core successively outside the Kufil basis material, and two above cores are coated in the combined insulation layer by the boundling combination.

Compared with the prior art the utility model has the following advantages:

The utility model has used the lenticular wire structure to increase the copper factor of transformer coiling, the Kufil material has improved the recrystallization temperature and the creep strength of winding wire, make it have better conductance and mechanical strength, through test, conductance can reach 102%IACS, and tensile strength can reach 280Mpa, utilize the alloy hierarchy can reduce the eddy current of transformer generation in service, and can improve the efficient of transformer, with the cost ratio that increases, the performance that transformer promotes has more attraction.

Description of drawings

Fig. 1 is the utility model structural representation.

Embodiment

Embodiment during following the utility model is incited somebody to action in conjunction with the accompanying drawings is further described:

As shown in Figure 1, comprise Kufil basis material 1, the single-phase melt layer 2 of Kufil, fine silver layer 3, single bag insulating barrier 4, combined insulation layer 5.

The utility model forms Kufil basis material 1 according to the continuously extruded shaping of the copper silver metal of specification proportioning silver content 0.05%～0.15% mass fraction back, and the single-phase melt layer 2 of copper facing silver alloy, fine silver layer 3, single bag insulating barrier 4 are formed core successively outside Kufil basis material 1.At first utilize laser silver coating 60S ± 10S, TRANSIENT HIGH TEMPERATURE reaches and makes the congruent melting of copper silver form the single-phase melt layer 2 of Kufil more than 960 ℃, and guarantee that shortage of heat is to melt whole fine silver layers 3, single-phase melt layer 2 thickness of Kufil keep 0.005 ± 0.001mm, fine silver layer 3 thickness keep 0.005 ± 0.001mm, because of there is fillet R in the lenticular wire structure, even for coating, utilize surplus temperature to cross one shaping mould during coating and guarantee surface quality.Making semi-finished product by the wrapped single bag insulating barrier 4 of wrapped equipment self-locking is core, two roots of preparation and above semi-finished product core are made up wrapped combined insulation layer 5 by boundling after after the traction compacting rolling paper bag Kufil composite conductor.

The utility model utilizes laser to plate silver layer according to wire gauge after continuously extruded then, the plating time in the control, make and between silver layer and Kufil basis material, form the single-phase melt layer of copper silver, make whole alloy wire cored structure intensity increase, re-use wrapped equipment core is improved its dielectric strength after wrapped according to the wrapped mode of self-locking, then with 2 and above wide of core composition or two overlapping row of leptoprosopy, lapped insulation.Skin effect is arranged during current delivery, so the electric conductivity of silver layer is not fully exerted, because paper bag Kufil composite conductor has been taked hierarchy, so can reduce the generation of vortex phenomenon when in use.

Claims

1, a kind of paper bag Kufil composite conductor, comprise Kufil basis material (1), single bag insulating barrier (4), combined insulation layer (5), it is characterized in that: the single-phase melt layer of copper facing silver alloy (2), fine silver layer (3), single bag insulating barrier (4) are formed core successively outside Kufil basis material (1), and two above cores are coated in the combined insulation layer (5) by the boundling combination.

2, paper bag Kufil composite conductor according to claim 1 is characterized in that the single-phase melt layer of described Kufil (2) thickness is: 0.005 ± 0.001mm.

3, paper bag Kufil composite conductor according to claim 1 is characterized in that described fine silver layer (3) thickness is: 0.005 ± 0.001mm.