CN200950380Y

CN200950380Y - Three-phase transformer core

Info

Publication number: CN200950380Y
Application number: CN 200620105511
Authority: CN
Inventors: 王永法
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-07-10
Filing date: 2006-07-10
Publication date: 2007-09-19
Anticipated expiration: 2016-07-10

Abstract

A three-phase transformer iron-core is capable of saving manufacturing materials and producing transformers with small magnetic loss and low noise. The utility model is a ''star'' shape structure including two lateral columns, a central column, an upper iron yoke and a lower iron yoke. The lateral columns, central column, upper and lower iron yokes are stacked up by lamination and each layer comprises a plurality of laminations. The cross section of the lateral columns, central column, upper and lower iron yokes is ladder-shaped closed arc. The utility model is characterized in that the overlapping sequence in the joint between the central column and the upper and lower iron yokes is a structure of alternating lamination straight seam and lamination linear seam. The utility model is applicable to the transformer iron core.

Description

A kind of three-phase transformer iron core

Technical field

The utility model relates to a kind of transformer core.

Background technology

In the existing power transformer, conventional its iron core of three-phase transformer is the plane laminated structure.Two side columns of this three-phase transformer iron core, a center pillar with taking complete oblique three grades of dislocation being connected of upper and lower iron yoke as shown in Figure 1 connect more.So-called three grades of dislocation connect and are meant that a plurality of laminations build up a stack layer, three equidirectional dislocation in succession in stack layer end, and dislocation in succession in the other direction again, stack so repeatedly, mutual dislocation connects.The defective of this connected mode is: center pillar and upper and lower iron yoke are mitre because of the place's of interconnecting seam entirely, so leftover pieces are many; Again because the magnetic field of its center pillar unshakable in one's determination of transformer and upper and lower iron yoke junction is proved to be rotating magnetic field, the magnetic line of force and non-perpendicular to mitre direction unshakable in one's determination herein, so magnetic loss is bigger, noise is also bigger than normal.

Summary of the invention

It is bigger that the utility model will solve the manufacturing materials loss unshakable in one's determination of existing three-phase transformer, the big and noise problem bigger than normal of transformer magnetic loss provides a kind of three-phase transformer iron core of the present utility model for this reason, and this manufacturing materials loss unshakable in one's determination is less, it is little to make its magnetic loss of transformer, and noise is little.

For addressing the above problem, the technical solution adopted in the utility model is made up of two side columns, a center pillar and upper and lower iron yoke

Type constitutes, described side column, center pillar and upper and lower iron yoke are made of stacked the amassing of stack, each stack layer is made of some lamination stacks, the cross section of described side column, center pillar and upper and lower iron yoke is that ladder closes arc, and the stack layered suture preface structure that it is characterized in that described center pillar and upper and lower iron yoke junction is to be alternately distributed structure inside and outside straight seam of stack layer and the stack layer line type seam.

Described cross section is that ladder closes arc and is meant Step Circular, ladder ellipse or ladder Long Circle, and promptly the cross section envelope is circular, ellipse or Long Circle.

Described line style seam is meant recessed direct seam, mitre or arc seam.

The junction structure optimization of described side column, center pillar and upper and lower iron yoke is a Pyatyi dislocation syndeton.

Side column in the utility model, center pillar and upper and lower iron yoke are made of stacked the amassing of stack, and each stack layer is that lamination builds up by some laminations.

The stack layered suture preface structure of described center pillar and upper and lower iron yoke junction be meant center pillar stack layer and upper and lower iron yoke stack layer seam herein inside and outside be alternately distributed structure, this structure is to be alternately distributed structure inside and outside straight seam of stack layer and the stack layer line type seam.

Described straight seam is meant center pillar stack layer and upper and lower iron yoke stack layer junction, and upper and lower iron yoke stack layer side is straight does not open the seam that recess and center pillar stack layer are connected to form;

Described recessed direct seam is meant that upper and lower iron yoke stack layer side offer the " seam that [" shape recess and center pillar stack layer are connected to form;

Described mitre is meant that upper and lower iron yoke stack layer side offer the seam that " V " shape recess and center pillar stack layer are connected to form;

Described arc seam is meant that upper and lower iron yoke stack layer side offer the seam that concave arc breach and center pillar stack layer are connected to form;

Corresponding to described various seams, center pillar stack layer end shape correspondingly.

Be meant that as three grades of dislocation connections described in " background technology " a plurality of laminations are a stack layer, three equidirectional dislocation in succession in stack layer end, dislocation in succession in the other direction again, stack so repeatedly, mutual dislocation connects similar, and Pyatyi dislocation syndeton described in the utility model is meant that a plurality of laminations are a stack layer, five equidirectional dislocation in succession in stack layer end, dislocation in succession in the other direction again, stack so repeatedly, mutual dislocation connects.

The utility model is because the stack layered suture preface structure of center pillar and upper and lower iron yoke junction is to be alternately distributed structure inside and outside straight seam of stack layer and the stack layer line type seam, so compare with existing full bias seam structure unshakable in one's determination, the leftover pieces excision was less when center pillar and upper and lower iron yoke were made, and can save material; Again because transformer core center pillar and magnetic field, upper and lower iron yoke junction are rotating magnetic field, magnetic line of force direction is not orthogonal to described mitre, and the utility model center pillar and upper and lower iron yoke junction are not to be mitre entirely, can there be mitre or part mitre only, so magnetic loss is little, noise is little.

Description of drawings

Fig. 1 commonly uses plane mitre laminated transformer core lamination schematic diagram;

Fig. 2 is the utility model one embodiment outline drawing;

Fig. 3 is in one deck, center pillar and the straight seam construction schematic diagram of upper and lower iron yoke stack layer;

Fig. 4 is in one deck, center pillar and upper and lower iron yoke stack layer mitre structural representation;

Fig. 5 is in one deck, center pillar and the another structural representation of the upper and lower straight seam of iron yoke stack layer, wherein upper and lower iron yoke and side column junction relative Fig. 3 of the stack layer distance that misplaces;

Fig. 6 is in one deck, center pillar and the another structural representation of upper and lower iron yoke stack layer mitre, and Fig. 4 mitre direction is turned one's coat relatively;

Fig. 7 is in one deck, center pillar and the another structural representation of the upper and lower straight seam of iron yoke stack layer, relatively upper and lower iron yoke of Fig. 5 and the side column junction distance that misplaces again;

Fig. 8 is that Fig. 2 A-A analyses and observe a schematic diagram, and this is the ladder ellipse;

Fig. 9 is that Fig. 2 A-A analyses and observe another schematic diagram, and this is the ladder Long Circle;

Figure 10 is upper and lower iron yoke sheet one shape schematic diagram;

Figure 11 is the another shape schematic diagram of upper and lower iron yoke sheet;

Figure 12 is center pillar sheet one a shape schematic diagram;

Figure 13 is the another shape schematic diagram of center pillar sheet;

Figure 14 is side column sheet one schematic diagram;

Figure 15 is Fig. 2 B-B structure cross-sectional schematic;

Figure 16 is in one deck, center pillar and the recessed direct crack structure schematic diagram of upper and lower iron yoke stack layer;

Figure 17 is in one deck, center pillar and upper and lower iron yoke stack layer arc seam construction schematic diagram.

Embodiment

Embodiment one

A kind of three-phase transformer iron core, show as Fig. 2, by two side columns 3, a center pillar 2 and last, lower yoke 1 is formed "  " type and is constituted, side column, center pillar and last, lower yoke cross section such as Fig. 8, Figure 9 shows that ladder ellipse or ladder Long Circle, side column, center pillar and last, lower yoke is made of stacked the amassing of stack, each stack layer is that iron yoke sheet builds up by two laminations, center pillar and last, the stack layered suture preface structure of lower yoke junction is to be alternately distributed structure inside and outside straight seam of stack layer and the stack layer mitre, as Fig. 3, Fig. 4, Fig. 5, Fig. 6 and shown in Figure 7: every figure is depicted as one deck, Fig. 3 is a center pillar and last, lower yoke stack layer connects seam and is straight seam, Fig. 4 is a mitre, Fig. 5 is straight seam, Fig. 6 is a mitre, and Fig. 7 is straight seam; Side column, center pillar are that the Pyatyi dislocation is connected with upper and lower iron yoke stack layer, as shown in figure 15: this figure analyses and observe signal for Fig. 2 B-B, the Pyatyi dislocation connects and refers to that side column stack layer 31, stack layer 32, stack layer 33, stack layer 34, stack layer 35 end one direction misplace in succession, circulation time dislocation in succession in the other direction once more, corresponding with it, the dislocation of lower

yoke stack layer

11,12,13,14,15 Pyatyi is with the corresponding connection of side column stack layer; Corresponding to mitre, upper and lower iron yoke lamination is that iron yoke sheet such as Figure 10 show that center pillar lamination such as Figure 12 show; Corresponding to straight seam, upper and lower iron yoke lamination such as Figure 11 show that center pillar lamination such as Figure 13 show: side column lamination such as Figure 14 show.

The processing method that this is unshakable in one's determination: earlier by designing requirement, comprise at different levels wide, lengths of a film and total sheet number, cut laminations at different levels, by Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7 two one decks of laminations at different levels are built into again

The type structure, and by Fig. 3～Fig. 7 order stack that misplaces in succession, Pyatyi dislocation as described, Figure 15 represents the dislocation or the title fissure of displacement structure of side column and upper and lower iron yoke junction; Be ladder ellipse or ladder Long Circle by Fig. 8 or upper and lower iron yoke and side column, the centre pillar cross-section of making shown in Figure 9 during stack.

Embodiment two

What this example was different from example one is, the upper and lower iron yoke lamination shown in Fig. 4, Fig. 6 is made into shown in Figure 16, and the stack layered suture preface structure of this routine center pillar and upper and lower iron yoke junction is to be alternately distributed structure inside and outside straight seam of stack layer and the recessed direct seam of stack layer.

Embodiment three

What be different from example one is, the upper and lower iron yoke lamination shown in Fig. 4, Fig. 6 is made into shown in Figure 17, and the stack layered suture preface structure of this routine center pillar and upper and lower iron yoke junction is to be alternately distributed structure inside and outside straight seam of stack layer and the stack layer arc seam.

Its upper and lower iron yoke of iron core of the present utility model and center pillar junction are non-full bias seam structure, are to be alternately distributed structure inside and outside straight seam-mitre, straight seam-recessed direct seam or the straight seam-arc seam; Every upper and lower iron yoke and principal post stack layer are the inside and outside alternatively distributed the utility model protection range that is of straight seam and line style seam; Line style comprises mitre by seam, recessed direct seam, arc seam or the like.

Claims

1, a kind of three-phase transformer iron core, forming laterally by two side columns, a center pillar and upper and lower iron yoke, " day " font constitutes, described side column, center pillar and upper and lower iron yoke are made of stacked the amassing of stack, each stack layer is made of some lamination stacks, the cross section of described side column, center pillar and upper and lower iron yoke is that ladder closes arc, and the stack layered suture preface structure that it is characterized in that described center pillar and upper and lower iron yoke junction is to be alternately distributed structure inside and outside straight seam of stack layer and the stack layer line type seam.

2, a kind of three-phase transformer iron core as claimed in claim 1 is characterized in that described ladder closes arc and is meant Step Circular, ladder ellipse or ladder Long Circle.

3, a kind of three-phase transformer iron core as claimed in claim 2 is characterized in that described line style seam is meant recessed direct seam, mitre or arc seam.

4, a kind of three-phase transformer iron core as claimed in claim 2, the junction structure that it is characterized in that described side column, center pillar and upper and lower iron yoke are Pyatyi dislocation syndeton.