CN101340130A

CN101340130A - Reversed wire embedding and wiring method of double layer winding of three-phase asynchronous motor

Info

Publication number: CN101340130A
Application number: CNA2008101387904A
Authority: CN
Inventors: 陈培敦; 孙桂香; 赵永华; 纪荣春
Original assignee: Shandong Taishan Steel Group
Current assignee: Shandong Taishan Steel Group
Priority date: 2008-08-11
Filing date: 2008-08-11
Publication date: 2009-01-07
Anticipated expiration: 2028-08-11
Also published as: CN101340130B

Abstract

The invention discloses an inverse sleeving inserted wiring method of the double layer winding of a three-phase asynchronous motor, comprising the steps of making a wire model, winding wire, arranging insulating paper in a groove and inserting wire, and the method is characterized in that in the wire winding step, winding between each two adjacent wire packs is performed directly; in the wire inserting step, before wire inserting, a loop of wire connecting the next wire pack and the previous wire pack of the two adjacent wire packs is released at first; then the previous wire pack is sheathed across from the center of the next wire pack and returns from the upper side of the next wire pack to the front side of the next wire pack; meanwhile, the next wire pack turns 180 degrees toward the direction of the previous wire pack. The method has the advantages that as an additional loop between the adjacent two wire packs is not needed, the series connection and welding of 1-4 are avoided, therefore, wire materials are saved, cost is reduced, time saving and labor saving are realized, and labor efficiency is increased; meanwhile, the appearance is concise and beautiful, and labor efficiency is increased; in addition, no welded joint is presented, therefore, the performance of the motor is increased, the service life is prolonged and maintenance frequency is reduced; the method can be widely applied to the inserted wiring of three-phase asynchronous motors.

Description

Reversed wire embedding and wiring method of double layer winding of three-phase asynchronous motor

Technical field

The present invention relates to a kind of improvement of three phase stator winding rule mode of connection, particularly a kind of reversed wire embedding and wiring method of double layer winding of three-phase asynchronous motor.

Background technology

Threephase asynchronous is because of advantages such as its cost are low, simple in structure, reliable, so be to use the motor that the platform number is maximum, power consumption is maximum at present, its stator two layer winding rule wiring step by make the line mould, wind the line, put insulating paper in the groove, rule, five steps of the end of a thread welding finish, because the groove of motor is counted the z difference, number of poles 2p difference, it is also different that every extremely every phase groove is counted q, when coiling, according to the q difference, around the line bag also different, will be between two line bags many around a circle, will be how during rule around one enclose and cut off from the centre; As one group one group of line bag ground around, also be many between two groups of line bags in fact around a circle, during wiring, the end of a thread that line bag nexine is cut off 1-4 line bag again couples together.

This rule connection has following shortcoming:

To manyly cause the waste of wire rod between two groups of line bags when 1, winding the line, improve the rule cost around a circle;

2, behind the rule, there is 2pm line tail line bag the inside, and there is 2pm the end of a thread line bag outside, makes its outward appearance untidy, and the line bag is more random;

3, during wiring, line bag the inside 1-4 tail tail is gone here and there mutually, when going here and there mutually, at first will scrape off the insulating barrier of the end of a thread portion, and then wiring, welding, because soldering tip is many, also increased contact resistance, and efficiency is low, and soldering tip increases, and has also increased the fault point of winding.

Summary of the invention

The object of the present invention is to provide behind a kind of rule that there is, does not need to cut off coiling in all wireless tail in each line bag, make stator winding clean and tidy, attractive in appearance, and a kind of reversed wire embedding and wiring method of double layer winding of three-phase asynchronous motor of saving wire rod, reducing cost, raise labour efficiency.

For reaching above purpose, the technical solution adopted in the present invention is: this reversed wire embedding and wiring method of double layer winding of three-phase asynchronous motor, by make the line mould, wind the line, put insulating paper in the groove, the rule step is finished, it is characterized in that in the coiling step, directly coiling between per two adjacent lines bags, no longer many around a circle; In the rule step, before the rule, needing at first a back line of two adjacent lines bags to be wrapped an astragal that is connected with previous line bag separates, again previous line bag is gone over from a back line bag intermediate sleeve, be back to the front side of a back line bag again from the upside of a back line bag, meanwhile, a back line bag is turned over turnback to the direction of previous line bag, make the end of a thread of a previous line bag and a back line bag all be in the line bag below, the groove rule of insulating paper could put into then, behind the rule, the end of a thread is the outside of online bag all, and line is in corresponding motor slot.Described line bag number is corresponding with the number of poles of motor, adopts formula 2pm to represent that wherein, 2p is a number of poles, and m is a three-phase.The present invention is applicable to three-phase the two poles of the earth a=1; Three-phase and quadrupole a=2; Six grades of a=3 of three-phase; Three-phase ends of the earth a=4; Three-phase ten utmost point a=5; The threephase asynchronous of three-phase 12 utmost point a=6 rule wiring.

Beneficial effect of the present invention is: compare with present threephase asynchronous stator two layer winding rule connection, owing to need not again many between the two adjacent line bags around a circle, also need not to cut off again, the line of line bag the inside 1-4 is an astragal of taking off, there have not been serial connection and the welding of 1-4, so, can save wire rod, reduce cost, time saving and energy saving, raise labour efficiency, and profile is succinct, attractive in appearance.Through contrast, in the rule wiring of the stator two layer winding of threephase asynchronous, can save copper cash 2-6%, cost reduces 8-10%, because no longer welding, whenever around an identical stator two layer winding, can shift to an earlier date 2-4 hour and finish, therefore, also improve efficiency.In addition, because solderless fitting, so, also increased motor properties, prolonged useful life, reduced maintenance frequency.

Description of drawings

Fig. 1 is the view behind the anti-cover of two adjacent lines bags of the embodiment of the invention 1.

Fig. 2 is the rule schematic diagram of the embodiment of the invention 1.

Fig. 3 is the way to get there of the embodiment of the invention 1 rule line.

Fig. 4 is that circle diagram is simplified in the embodiment of the invention 1 anti-cover back wiring.

Fig. 5 is that circle diagram is simplified in three-phase and quadrupole a=2 wiring in the prior art.

Fig. 6 overlaps the back and launches schematic diagram for the embodiment of the invention 1 two layer winding is counter.

Specific embodiment

Embodiment 1

With y200L-4, the 30kw threephase asynchronous is an example, i.e. three-phase and quadrupole, a=2 wiring, its number of slots: Z=36; Line directly is:

Pitch: y=1-9; Coil turn: N=16.Its rule wiring step is: make the line mould, wind the line, put insulating paper, rule in the groove, wherein, make the line mould, put in the mould insulating paper and operate routinely, in the coiling step: altogether around 6 big plates, every plate 6 wisps, every plate divides two line bags, and 3 wisps are a line bag, by 1,2,3,4,5,6 serial numbers, between the 3-4 wisp directly around, need not how need not cut off around a circle between two adjacent lines bags on every plate, every extremely every phase groove is counted q=z/2pm=36/4 * 3=3; The rule step is: earlier the 4th wisp in every big plate 6 wisps is separated next circle, in

order

1,2,3 wisps are a line bag, 4,5,6 wisps are a line bag, with 1,2,3 wisp line bags are from 4,5,6 wisp line bag intermediate sleeve are gone over, be called anti-cover, again from 4,5, the upside of 6 wisp line bags is back to 4,5, the front side of 6 wisp line bags, simultaneously, with 4,5,6 wisp line bags turn over turnback, become 6,5,4 wisp line bags make 1,2,3 wisp line bags and 6,5, the end of a thread of 4 wisp line bags all online bag below, rule is carried out in operation routinely then, to in groove, put into insulating paper before the rule, earlier embed 1 in order, 2,3 wisps embed 6 by anti-order again, 5,4 wisps, the end of a thread all online bag below, wherein on the 1st wisp single line head is arranged, the single line head is arranged on the 6th wisp.

In conjunction with the accompanying drawings embodiment 1 is described further, among Fig. 1, represent the anti-configuration of overlapping back and

back line bag

6,5,4 wisps of 1,2,3 wisps of previous line bag, behind the anti-as can be seen cover, 6, the order of 5,4 wisps and 1,2,3 wisp reversed in order, the end of a thread all be in the line bag below, from a back line bag take off one the circle line also online bag below; Among Fig. 2, " O " represents the groove number, expresses the situation behind the anti-cover in the first plate, pitch is 1-9, wherein, line below, when rolling off the production line, preceding 3 wisps in the 3 big plates of down anti-earlier cover back, promptly 1,2,3 wisps descend 6,5,4 wisps after instead overlapping again, and line is in a last groove, its pitch is 1-9, the Na Yiquan that unties when being anti-overlapping; Fig. 3 has provided the way to get there of line, pitch is 1-9, rolls off the production line by Fig. 3, and the number of turn in each groove still is 16 circles, coil turn is constant, the wiring step is: because of 3 wisps are 1 line bag, and totally 12 line bags, 12 the end of a thread of outside only appear in anti-cover back, during wiring from 7 line bags of the 1st line bag number to the, be 1-7, two two-phase strings are drawn 6 lead-in wires; Fig. 4 overlaps the back wiring and simplifies circle diagram for present embodiment is counter, Fig. 5 has provided three-phase and quadrupole a=2 wiring simplification circle diagram in the prior art, finds out that from Fig. 4,5 contrasts in Fig. 5, there are many coilings the inboard of online bag, and 6 the end of a thread are arranged in the outside, is respectively U ₁, V ₁, W ₁, U ₂, V ₂, W ₂, and among Fig. 4, the inboard of online bag no longer includes many coilings and exists, and 6 the end of a thread are only arranged in the outside, is respectively U ₁, V ₁, W ₁, U ₂, V ₂, W ₂6 the end of a thread are as can be seen from Figure 6 only arranged in the bottom side, be respectively U ₁, V ₁, W ₁, U ₂, V ₂, W ₂, no longer wired tail.

Through contrast, at y200L-4, on the 30kw threephase asynchronous, can save wire rod 3%, expense 9% reduces cost. On wiring time, can shift to an earlier date 3 hours and finish; On motor performance,, there are not any change and influence through check.

From our company, the annual average maintenance frequency of this type of motor 1200 times, the company of can be reduces the loss more than 10 ten thousand yuan.

Claims

1, a kind of reversed wire embedding and wiring method of double layer winding of three-phase asynchronous motor, by make the line mould, wind the line, put insulating paper in the groove, the rule step is finished, and it is characterized in that in the coiling step directly coiling between per two adjacent lines bags; In the rule step, before the rule, needing at first a back line of two adjacent lines bags to be wrapped an astragal that is connected with previous line bag separates, again previous line bag is gone over from a back line bag intermediate sleeve, be back to the front side of a back line bag again from the upside of a back line bag, meanwhile, a back line bag is turned over turnback to the direction of previous line bag, make the end of a thread of a previous line bag and a back line bag all be in the line bag below, the groove rule of insulating paper could put into then, behind the rule, the end of a thread is the outside of online bag all, and line is in corresponding motor slot.