CN202384032U - H-level or 200-level electromagnetic wire - Google Patents

Abstract

The utility model relates to an H-level or 200-level electromagnetic wire, which is low in production cost and high in product property, is applicable to energy conservation and emission reduction, and is low in environmental pollution. The H-level or 200-level electromagnetic wire comprises a copper wire and an insulating resin layer which is formed by uniformly extruding high temperature-resistant thermoplastic polyimide on the copper wire through an extruder. The insulating resin layer is 0.15-1.4 mm thick. No organic solvent is needed in production of electromagnetic wire provided by the utility model, thereby avoiding emission of the organic solvent and preventing environmental pollution. Compared with a varnished wire, the electromagnetic wire has the advantage that the insulating layer does not need painting and roasting for many times and curing at a high temperature. Compared with a thin film lapped wire, the electromagnetic wire has the advantages that the process of manufacturing a thin film is saved, the power of a heater only is thousands of watts, so as to save electric energy for more than 200 kilowatts. The electromagnetic wire provided by the utility model has the advantages of higher product quality, no pollution and zero emission in a production process, and higher production efficiency, and can greatly improve energy. A process method provided by the utility model is applicable to a round and rectangular electromagnetic wire by using the other insulating resin with a thermoplastic property.

Description

A kind of H level or 200 grades of electromagnetic wires

Technical field

The utility model relates to the technical field that the electrician makes with electromagnetic wire, relates to high-voltage generator, high-tension motor, track drawing motor, frequency-conversion and speed-regulation motor, wind-driven generator etc. with H level or 200 grades of electromagnetic wires.

Background technology

In electrician trade, the electromagnetic wire demand is very big.Usually the electromagnetic wire of using in motor, the electrical apparatus industry has two big types: enamelled wire and lapped wire.The amount of solid of wire enamel is very little in the enamelled wire manufacture process, less than 20%, be coated onto certain film thickness, just must be coated with repeatedly, cures repeatedly, makes solvent evaporates and makes film curing.Not only waste a large amount of organic solvents, and caused the severe contamination of environment, repeatedly cured the huge consumption that also causes electric power.Concerning lapped wire; The lapped wire that specific type of electric machines such as particularly large-scale high-voltage generator, high-tension motor, track traffic traction electric machine, high-voltage frequency conversion and speed-adjusting motor are used or mica (polyester film) coiling or polyimide film sintered line; Or the wrapped again mica tape in outside of film wrapped (sintering) layer, what have also wants the wrapped glass fiber structure of dipping lacquer again on above insulating barrier.Wherein mica tape or the polyimide film used of lapping electromagnetic wire all used a large amount of organic solvents, and consumed a large amount of electric power, causes waste, improved the production cost of electromagnetic wire, simultaneously also severe contamination environment.On the other hand, enamelled wire inevitably has pin hole, and the wrapped sintering line of mica lapped wire and film all has seam crossing, and these all are the weak link of electricity undoubtedly on electrical property.Be the high-pressure trend that adapts to high-rating generator, the frequency conversionization of variable working condition high-tension motor, track traffic high speed and heavy loading require electromagnetic wire that higher reliability and long useful life are arranged.

How solving the pollution in the electromagnetic wire production process, the problem of high energy consumption, improve the performance of electromagnetic wire simultaneously, is the technical barrier of this area.

The utility model content

The technical problem that the utility model will solve provide a kind of production cost lower, be suitable for energy-saving and emission-reduction, reduce environmental pollution and properties of product higher H level or 200 grades of electromagnetic wires.

In order to solve the problems of the technologies described above, the H level that the utility model provides or 200 grades of electromagnetic wires comprise: copper cash and high temperature resistant thermoplastic polyimide resin evenly is extruded in the insulating resin layer on this copper cash through extruder.

Particularly, the thickness of said insulating resin layer is 0.15～1.4mm.

The technique scheme of the utility model is compared prior art and is had the following advantages:

(1) the H level of the utility model or 200 grades of electromagnetic wires evenly are extruded in the fire resistant polyimide resin on this copper cash through extruder, and the electromagnetic wire of processing has like this been eliminated the gap of the pin hole and the lapped wire seam crossing of enamelled wire, has improved electrical insulation properties; In its insulation, added inorganic nano material simultaneously: silicon dioxide, alundum (Al and aluminium nitride with high corona resistance, high-termal conductivity; The proportioning of these three kinds of inorganic nano materials; Be suitable for improving the thermal endurance of insulating barrier, and make the electromagnetic wire of producing reach H level or 200 class F insulations; Conductive coefficient reaches 0.60W/Mk.Thickness of insulating layer can be by regulating in 0.15～1.4mm (two-sided thickness) scope.

(2) the utility model employing fire resistant polyimide resin is an insulating resin, produces H level or 200 grades of electromagnetic wires through the technology with extrusion modling.Stopped the discharging of organic solvent, eliminated pollution environment; Compare insulating barrier with enamelled wire and need not repeatedly to paint, repeatedly cure and hot setting, compare the operation of having saved thin film fabrication with the film lapped wire, heater power has only several kilowatts, and economize on electricity is more than at least 200 kilowatts.So the product quality of the utility model is higher, production process is pollution-free, zero discharge, production efficiency are higher, can be significantly energy-conservation.The utility model is applicable to other insulating resins with thermoplastic characteristics makes circle and rectangular electromagnetic wire.

Description of drawings

For the content that makes the utility model is more clearly understood, below basis specific embodiment and combine accompanying drawing, the utility model is done further detailed explanation, wherein

Fig. 1 is the structural representation of production line of H level or 200 grades of electromagnetic wires of the utility model;

Fig. 2 is the H level of the utility model or the cross-sectional view of 200 grades of electromagnetic wires.

Reference numeral: 1--actinobacillus device, 2--regulating wheel, 3--preheater, 4--extruder, 5--automatic feeding device, 6--bosh, 7--meter counter, 8--draw-gear, 9--winding and arranging device, 10--control cubicle, 11--copper cash, 12--insulating resin layer.

Embodiment

The H level of present embodiment or 200 grades of electromagnetic wires comprise: the copper cash 11 and fire resistant polyimide resin evenly is extruded in the insulating resin layer 12 on this copper cash 11 through extruder.

The H level of present embodiment or the production method of 200 grades of electromagnetic wires comprise: it is subsequent use to obtain high temperature resistant thermoplastic polyimide resin (being insulating resin) after the polyimide resin that will add nano material stirs.

Said insulating resin is put into the extruder hopper, start extruder; Said extruder is heated to 260～300 ℃, 350～360 ℃ and 360～365 ℃ to said insulating resin segmentation successively.This moment, pellet was the high temperature viscous state, and was pressed against head; Extrude from the die sleeve mouth annular gap of materials flow through between core rod and die sleeve that arrives head; Make the bare copper wire that is preheated to 110 ℃ pass cross-head and be installed in the shaping mould in the head; The insulating resin that is melt into viscous state is expressed on the bare copper wire that is extruded in circle or rectangle on the bare copper wire; Adopt 85 ℃ hot water, 55 ℃ warm water, 20 ℃ room temperature water to cool off successively then successively 40 seconds; To form the continuous closely knit insulating barrier that thickness is close to bare copper wire uniformly, rolling is to take-up reel the most then.

Obviously, the foregoing description only be for explain clearly that the utility model does for example, and be not to be qualification to the execution mode of the utility model.For the those of ordinary skill in affiliated field, on the basis of above-mentioned explanation, can also make other multi-form variation or change.Here need not also can't give exhaustive to all execution modes.And conspicuous variation that these spirit that belong to the utility model are extended out or change still are among the protection range of the utility model.

Claims (2)

1. a H level or 200 grades of electromagnetic wires is characterized in that comprising: copper cash (11) and high temperature resistant thermoplastic polyimide resin evenly is extruded in the insulating resin layer (12) on this copper cash (11) through extruder.

2. H level according to claim 1 or 200 grades of electromagnetic wires is characterized in that: the thickness of said insulating resin layer (12) is 0.15～1.4mm.

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