CN203071687U

CN203071687U - Safety-increased type motor anticorona structure

Info

Publication number: CN203071687U
Application number: CN 201220650337
Authority: CN
Inventors: 钱伟; 严家骁; 晏乃意; 仇枫懿
Original assignee: Jiangsu Aerospace Power Electric Co Ltd
Current assignee: Jiangsu Aerospace Power Electric Co Ltd
Priority date: 2012-12-03
Filing date: 2012-12-03
Publication date: 2013-07-17
Anticipated expiration: 2022-12-03

Abstract

The utility model provides a safety-increased type motor anticorona structure, which comprises a coil straight line part, an iron core and a coil end part, wherein polyimide film-fluorine 46 covered flat copper wires are adopted for coil interturn insulation, polyimide film single-side reinforced little-glue mica tapes and glass fiber single-side reinforced little-glue mica tapes are semi-covered outside the polyimide film-fluorine 46 covered flat copper wires in a staggered way, a layer of low-resistance tape is semi-covered on the coil straight line part, a layer of high-resistance tape is semi-covered on the end part of the coil, a layer of dacron glass fiber interweaving tape is semi-covered on the outermost layer of the end part of the coil, and insulation material tapes are arranged between the coils. The insulation anticorona test is respectively carried out on the interturn insulation, interphase insulation and inter-coil insulation; as homemade materials are adopted, the cost is low; the insulation thickness is reduced, the cross area of the bare copper wire is effectively increased under the same condition; and the heat conducting capability of the insulation layer is improved.

Description

The anticorona structure of INCREASEDSAFETY motor

Technical field

The utility model relates to the electrical machine insulation field, relates in particular to a kind of rated operational voltage in the anticorona structure of different, the synchronous INCREASEDSAFETY fire-proof motor of the three-phase alternating current of 10-11KV scope.

Background technology

Insulate between the turn-to-turn insulation of the motor of INCREASEDSAFETY motor new standard GB3836.3-2010 and alternate, line and have higher requirement.The insulation system of current extensive employing does not satisfy this requirement, in insulation thickness, the heat radiation requirement, in the production process to the wrapping requirement of strength under, select homemade insulating material for use, by reasonable combination with for active component, meet the demands fully by test of many times and test proof, through the audit of national explosion-proof test center, now be used for production.

Summary of the invention

The purpose of this utility model has been to provide a kind of corona-proof insulation structure that satisfies INCREASEDSAFETY motor new standard, all is being better than now using structure aspect insulation thickness, heat conduction, insulating material mechanical strength and the technological operation simultaneously.

The utility model is achieved in that the anticorona structure of INCREASEDSAFETY motor, comprise the coil straight line portion, unshakable in one's determination, end winding, it is characterized in that: coil turn-to-turn insulation adopts polyimide film-fluorine 46 wrapped flat type copper wires, described polyimide film-fluorine 46 wrapped flat type copper wire outside intersection half laps are surrounded by polyimide film single face reinforcement low resin mica tape and glass cloth single face reinforcement low resin mica tape, be surrounded by the low stopband of one deck at coil straight line portion half lap, at the high stopband of end winding half-stack package one deck, described end winding outermost one deck half-stack package one deck dacron glass fiber band that interweaves; Be provided with insulating material belt between coil and the coil.

As optimization, described coil straight line portion intersection half lap is surrounded by 9-10 strata imide membrane single face reinforcement low resin mica tape and glass cloth single face reinforcement low resin mica tape; Described end winding intersection half lap is surrounded by 8-9 strata imide membrane single face reinforcement low resin mica tape and glass cloth single face reinforcement low resin mica tape.

The utility model all carries out the isolated coronaproof test respectively with insulation between turn-to-turn insulation, phase insulation, line, adopt the home made materials cost low, under attenuate insulation thickness, the same terms, effectively increased bare copper wire sectional area, improved the capacity of heat transmission of insulating barrier.In the mutual collocation combination of anticorona employing different materials, the control shared thickness of quantity of material and wrapped structure and position have been satisfied the requirement of INCREASEDSAFETY motor new standard, and can have been promoted the insulation system of corona being had relatively high expectations for other.

Description of drawings

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

Fig. 2 is the cross section structure schematic diagram of the utility model motor coil straight line portion;

Fig. 3 is the cross section structure schematic diagram of the utility model motor coil end.

Among the figure: 1, coil straight line portion, 2, iron core, 3, end winding, 4, insulating material belt,

5, the wrapped no glass copper strap wire of polyimide film list F46,6, polyimide film single face reinforcement low resin mica tape, 7, glass cloth single face reinforcement low resin mica tape, 8, low stopband, 9, high stopband, 10, the dacron glass fiber band that interweaves.

Embodiment

Show that below in conjunction with accompanying drawing the utility model is described in further detail

Coil turn-to-turn insulation adopts polyimide film-fluorine 46 wrapped flat type copper wires (glass fiber that original product adopts), in attenuate, a part of attenuate amount has all been given mica and the film of lapping layer, under the constant situation of turn-to-turn insulation thickness and former copper strap wire, the bare copper wire sectional area has been strengthened; Phase insulation adopts polyimide film single face reinforcement low resin mica tape 6 and glass cloth single face reinforcement low resin mica tape 7 to intersect half-stack package, and to require outermost one deck be glass cloth single face reinforcement low resin mica tape 7; At coil straight line portion 1 and the end winding 2 low stopband 8 of outer half-stack package one deck respectively and high stopbands 9, there is one deck dacron glass fiber to interweave in half 2 stacked package of end winding 3 outermosts and is with 10; The utility model has also increased insulation system between line, and intercoil insulation has adopted a kind of special insulating material belt 4, can fill effectively in a segment length scope.

Claims

1. the anticorona structure of INCREASEDSAFETY motor, comprise coil straight line portion (1), (2) unshakable in one's determination, end winding (3), it is characterized in that: coil turn-to-turn insulation adopts polyimide film-fluorine 46 wrapped flat type copper wires (5), described polyimide film-fluorine 46 wrapped flat type copper wires (5) outside intersection half lap is surrounded by polyimide film single face reinforcement low resin mica tape (6) and glass cloth single face reinforcement low resin mica tape (7), be surrounded by the low stopband (8) of one deck at coil straight line portion (1) half lap, at the high stopband of end winding (3) half-stack package one deck (9), described end winding (3) outermost one deck half-stack package one deck dacron glass fiber band (10) that interweaves; Be provided with insulating material belt (4) between coil and the coil.

2. the anticorona structure of INCREASEDSAFETY motor according to claim 1 is characterized in that: described coil straight line portion (1) intersects half lap and is surrounded by 9-10 strata imide membrane single face reinforcement low resin mica tape (6) and glass cloth single face reinforcement low resin mica tape (7).

3. the anticorona structure of INCREASEDSAFETY motor according to claim 1 is characterized in that: described end winding (3) intersects half lap and is surrounded by 8-9 strata imide membrane single face reinforcement low resin mica tape (6) and glass cloth single face reinforcement low resin mica tape (7).