CN201503716U

CN201503716U - Single side enameled self-adhesive transposition wire

Info

Publication number: CN201503716U
Application number: CN200920234327XU
Authority: CN
Inventors: 刘松
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-08-04
Filing date: 2009-08-04
Publication date: 2010-06-09
Anticipated expiration: 2019-08-04

Abstract

The utility model discloses a single side enameled self-adhesive transposition wire, which comprises a winding wire with overlapped wide surfaces twisted from a group of copper sheet wires via a transposition head in a manner of transposition. Multi-layer insulation paper is continuously wound on the outer surface of the winding wire, and a self-adhesive layer is enameled on the wide surface of each copper sheet wire. After a transformer coil made from the utility model undergoes vacuum drying, no epoxy paint spills from the narrow edge of the lead wire, namely the axial direction of the coil, so that the axial height of the coil is reduced, the size of the transformer is smaller, and the manufacturing cost is lower; moreover, such lead wires are not adhered to each other, thereby unclogging the oil passage, effectively accelerating the heat radiation of the coil, and ensuring the operation service life of the transformer.

Description

The self-adhering transposed conductor of single-face lacquering

Technical field

The utility model relates to a kind of transposed conductor, is a kind of self-adhering transposed conductor of single-face lacquering specifically.

Background technology

Increase along with transformer capacity, the sectional area of winding conducting wire also will increase by a certain percentage, but owing to be subjected to all multifactor restrictions such as electrical loss index, lead manufacturing condition and user's service condition, can not produce the lead of especially big sectional plane, so people are with the multiple conducting wires use that combines, but this mode has caused the length difference of solid conductor owing to the inside and outside lateral bending bilge radius difference of lead when coiling, thereby make the electrical loss difference of every lead, the pressure drop of generation is also inequality; For addressing this problem, transposed conductor arises at the historic moment, transposed conductor is a kind of new material of extensive use in the transformer production field in recent years, and the external now transposed conductor that generally uses is many single high-quality enameling copper strap wires or flat wire with paper wrapped to be exchanged arrangement position successively replace on the transposed conductor equipment of special use.

The single enameled sheet wire of the tack transposed conductor that the big-and-middle-sized transformer coil winding of domestic production is at present used, all adopt the width limit all to be coated with epoxy self-bonding paint, its objective is that the transposed conductor that makes through after the vacuumize bonds together, increase the mechanical strength of transformer under short-circuit condition, it is the anti-short circuit capability of transformer, the tack transposed conductor that this kind width is painted on four sides exists defective, in the coil dry run, the epoxy-based lacquers on the narrow limit of lead flows out axial dimension is strengthened, stop up oil duct, influence the coil heat radiation, reduce transformer life.

Summary of the invention

The purpose of this utility model is in order to overcome the deficiencies in the prior art, provides a kind of and can accelerate the transformer coil heat radiation, improves transformer life, reduces the self-adhering transposed conductor of the single-face lacquering of volume of transformer.

In order to solve the problems of the technologies described above, the self-adhering transposed conductor of a kind of single-face lacquering of the present utility model, comprise by one group of copper strap wire and be twisted into wide overlapped winding wire through the transposition of transposition head, the outer surface of winding wire wrapped continuously insulating paper, on wide of every copper strap wire, scribble self-adhesive layer.

Production technology of the present utility model is that the copper strap wire that scribbles self-adhesive layer on several or tens wide is stranded through auger unwrapping wire, the transposition of transposition head successively, outsourcing insulating paper, traction and five operations of finished product take-up.The production of self-adhesive layer is the technology that adopts self-adhesion stove, acetal stove separately to cure, carry out on wide of copper strap wire, being coated with the self-adhesion lacquer then, cure manufacturing via independent baker again and form, thereby reach best solidification effect, the lead adhesion strength of making than conventional method strengthens 20%.

The width of wherein said self-adhesive layer is 2/3rds of the wide face width degree of copper strap wire; The thickness of described self-adhesive layer is 0.02-0.05mm.

Beneficial effect: compared with prior art, the utility model has the advantages that since the self-adhesive layer width only account for wide cross section of copper strap wire width 2/3rds, the thickness of self-adhesive layer is 0.02-0.05mm, makes adhesion strength can reach 8～9N/mm ²After adopting the transformer coil vacuumize that the utility model makes, the narrow limit of lead is that the axial aspect of coil does not have epoxy-based lacquers to overflow, thereby makes coil axes to highly reducing, and volume of transformer diminishes, and production cost reduces; Non-caked mutually between the lead, make oil duct unimpeded, effectively accelerate the coil heat radiation, guarantee the service life of transformer.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the structural representation of copper strap wire in the utility model.

Embodiment

The utility model is described in further detail below in conjunction with accompanying drawing.

As depicted in figs. 1 and 2, the self-adhering transposed conductor of a kind of single-face lacquering of the utility model, comprise by one group of many copper strap wire 1 and be twisted into wide 3 overlapped winding wire through the transposition of transposition head, at the continuous wrapped multilayer insulation paper 2 of the outer surface of winding wire, only on wide 3 of every copper strap wire 1, scribble self-adhesive layer 4, be not coated with self-adhesive layer on the leptoprosopy 5, insulating paper 2 wrapped can being undertaken by the required technical indicator of user; Self-adhesive layer 4 adopts epoxy self-bonding paint, the technology of separately curing through self-adhesion stove, acetal stove, carry out single face then and be coated with the self-adhesion lacquer, cure to make via independent baker again and form, the width of self-adhesive layer 4 be wide 3 of single copper strap wire width 2/3rds, the thickness of self-adhesive layer 4 is 0.02-0.05mm.

The above only is a preferred implementation of the present utility model.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model principle, can also make some modification and improvement, these also should be considered as belonging to protection range of the present utility model.

Claims

1. the self-adhering transposed conductor of a single-face lacquering, comprise by one group of copper strap wire (1) and be twisted into wide the winding wire that (3) are overlapped through the transposition of transposition head, the outer surface of winding wire wrapped continuously insulating paper (2), it is characterized in that: on wide (3) of every copper strap wire (1), scribble self-adhesive layer (4).

2. the self-adhering transposed conductor of single-face lacquering according to claim 1, it is characterized in that: the width of described self-adhesive layer (4) is 2/3rds of wide (3) width of copper strap wire.

3. the self-adhering transposed conductor of single-face lacquering according to claim 1, it is characterized in that: the thickness of described self-adhesive layer (4) is 0.02-0.05mm.