CN205582729U - Large -scale transformer wire winding of no -float replaces with ox corner pad's structure - Google Patents

Abstract

The utility model discloses a large -scale transformer wire winding of no -float replaces with ox corner pad's structure, this ox corner pad has inner arc and outer arc respectively including the outer ox corner pad who is located the inboard ox corner pad of winding and is located the winding outside, interior ox corner pad and outer ox corner pad, and interior ox corner pad's outer arc is equallyd divide for first section and main part section with outer ox corner pad's inner arc, and in the winding axial, interior ox corner pad and outer ox corner pad are all and be equipped with the winding cushion between the winding wire, the utility model discloses an interior ox corner pad's outer arc divide into two sections, and outer ox corner pad's inner arc divide into two sections, rather than adopting single circular arc, compares traditional ox corner pad and can show when reducing to replace the shearing force that produces, and the outsourcing insulating layer of guardwire improves the anti short circuit ability of winding, the utility model discloses an interior ox corner pad and outer ox corner pad and winding no -float, except that leaveing necessary oil duct, transposition space real packing the tight completely, the pressurized is even during the coil pressurization, avoids local fail in compression insulating layer.

Description

A kind of structure of the high-power transformer wire winding transposition oxhorn pad of no-float

Technical field

This utility model relates to transformer technology field, and the high-power transformer being specifically related to a kind of no-float is led The structure of line winding transposition oxhorn pad.

Background technology

When, in Transformer Winding winding process, needing during several paralleled conductor to replace.And Transformer Winding is led Bigger space produced similar " shears mouth " during line transposition, current transformer production producer all uses Cornu Bovis seu Bubali Pad is filled with.Oxhorn pad is compared paper washer bar the earliest and is filled, winding more consolidation.But, existing cattle Angle pad uses single circular arc, exists for problems with: (1) uses single due to oxhorn pad in such winding process Designed arc-shaped appearance, provides only at transposition shears mouth and a little supports, and " shears mouth " fails effectively to fill, and coil takes up After, cut knife-edge part shearing force relatively greatly at this, insulating barrier is easily damaged.(2) inside and outside, the radian of oxhorn pad can not have Effect coordinates, and the radial not consolidation of coil, for the occasion that radial space is excessive, still needs to operation scene as required Paper fillers filler strip.

Utility model content

For solving above-mentioned technical problem, the purpose of this utility model is to provide the large-scale change of a kind of no-float The structure of depressor wire winding transposition oxhorn pad, oxhorn pad of the present utility model can protect the outsourcing of wire Insulating barrier, improves winding anti-short circuit capability, and transposition space can get the filling of complete consolidation.

For realizing above-mentioned technical purpose, reaching above-mentioned technique effect, this utility model is by the following technical programs Realize: the structure of the high-power transformer wire winding transposition oxhorn pad of a kind of no-float, this oxhorn pad bag Include the oxhorn pad being positioned at inside winding and be positioned at the outer oxhorn pad outside winding, interior oxhorn pad and outer oxhorn pad Being respectively provided with inner arc and outer arc, the outer arc of interior oxhorn pad and the inner arc of outer oxhorn pad are divided into head section and main paragraph, On axis of winding, interior oxhorn pad and outer oxhorn pad all and are provided with winding cushion block between winding conducting wire；

The inner arc radius R of interior oxhorn pad_a1=r, r are winding inside radius, and the inner arc of interior oxhorn pad is concentric with winding, As transposition interval gear number n > 3, center arc length L of the inner arc of interior oxhorn pad_a1=(n-1) L₁+ b ÷ 2, when changing Bit interval gear number n < when 3, center arc length L of the inner arc of interior oxhorn pad_a1=(n-0.5) L₁+ b ÷ 2, wherein, L₁For the ratio of girth in winding Yu total gear number of winding, b is the width of winding cushion block；Outside interior oxhorn pad The radius R of the head section of arc_a2=r+A, the radius R of the main paragraph of the outer arc of interior oxhorn pad_a3=R_a2=r+A, wherein, A is the radial height of winding conducting wire；The head section center of circle of the outer arc of interior oxhorn pad is concentric with winding, interior oxhorn pad Radial distance H between the inner arc of outer arc head section and interior oxhorn pad₁=A, the arc length of the outer arc head section of interior oxhorn pad L_a2=d+ Δ, Δ=5～10mm, d is the vertical dimension of the shears mouth formed during winding conducting wire transposition, the calculating of d Formula is:

$d=\frac{\frac{D}{2}\&times;(C-\mathrm{\&delta;})}{C+B};$

In this formula, δ is the head end thickness of interior oxhorn pad, δ=3～6mm, and C is winding conducting wire thickness, and D is for rising The distance between two cushion blocks at interval two endpoint locations of layer transposition, B is the thickness of winding cushion block；Interior cattle The radial height K of the end of angle pad₁=1～3mm, the main paragraph of the outer arc of interior oxhorn pad is connected on interior oxhorn pad End and interior oxhorn pad outer arc head section between；

The outer arc radius R of outer oxhorn pad_b1=R, R are winding outer radius, and the outer arc of outer oxhorn pad is concentric with winding, As transposition interval gear number n > 3, center arc length L of the outer arc of outer oxhorn pad_b1=(n-1) L₂+ b ÷ 2, when changing Bit interval gear number n < when 3, center arc length L of the outer arc of outer oxhorn pad_b1=(n-0.5) L₂+ b ÷ 2, wherein, B is the width of winding cushion block, L₂Ratio for winding outer perimeter Yu total gear number of winding；

The radius R of the head section of the inner arc of outer oxhorn pad_b2=R-A, A are the radial height of winding conducting wire, outer oxhorn pad The radius R of main paragraph of inner arc_b3=R_a3+ A × (N-1)+m, m is the size in reserved cooling oil road, M=2～4mm, N are number of lead wires during radial full circle, and the head section center of circle of the inner arc of outer oxhorn pad is concentric with winding, Radial distance H between inner arc head section and the outer arc of outer oxhorn pad of outer oxhorn pad₂=A, the inner arc of outer oxhorn pad Arc length L of head section_b2=L_a2；

The radial height K of the end of outer oxhorn pad₂=1～3mm, the main paragraph of the inner arc of outer oxhorn pad and interior cattle The main paragraph center of circle of the outer arc of angle pad is identical, and the main paragraph of the inner arc of outer oxhorn pad is connected on the end of outer oxhorn pad Between the head section of the inner arc of end and outer oxhorn pad；

The head of interior oxhorn pad and outer oxhorn pad is respectively provided with groove, and the head end thickness of this groove is δ, hanging down of groove Straight length S=d, the thickness of interior oxhorn pad and outer oxhorn pad remainder in addition to head groove is T, and T=C.

The beneficial effects of the utility model are: the outer arc of (1) interior oxhorn pad of the present utility model is divided into two sections, outward The inner arc of oxhorn pad is divided into two sections rather than uses single circular arc, compares tradition oxhorn pad and is significantly reduced The shearing force produced during transposition, the outsourcing insulation of protection wire, improves winding anti-short circuit capability；(2) originally The interior oxhorn pad of utility model and outer oxhorn pad and winding no-float, in addition to leaving necessary oil duct, transposition sky The complete consolidation of gap is filled, and during coil pressurization, pressurized is uniform, it is to avoid local compression damages insulating barrier.

Accompanying drawing explanation

Fig. 1 is the part-structure schematic diagram that this utility model is radial.

Fig. 2 is the part-structure schematic diagram in the axial direction after this utility model launches.

Fig. 3 is the structural representation of the outer oxhorn pad in this utility model.

Fig. 4 is the top view of Fig. 3.

Fig. 5 is the structural representation of the interior oxhorn pad in this utility model.

Detailed description of the invention

Below in conjunction with the accompanying drawings preferred embodiment of the present utility model is described in detail, so that this utility model Advantage and feature can be easier to be readily appreciated by one skilled in the art, thus to protection domain of the present utility model Make apparent clear and definite defining.

As shown in Figures 1 to 5, the high-power transformer wire winding transposition oxhorn pad of a kind of no-float Structure, this oxhorn pad includes the oxhorn pad 1 being positioned at inside winding and is positioned at the outer oxhorn pad 2 outside winding, Interior oxhorn pad 1 and outer oxhorn pad 2 are respectively provided with inner arc and outer arc, the outer arc of interior oxhorn pad 1 and outer oxhorn pad 2 Inner arc be divided into head section and main paragraph, on axis of winding, interior oxhorn pad 1 and outer oxhorn pad 2 all with around It is provided with winding cushion block 3 between group wire 4.

Interior oxhorn pad 1 and the relative dimensions of outer oxhorn pad 2 is determined according to Transformer Winding:

In formula calculated below: r is winding inside radius, R is winding outer radius, and A is the radial height of winding conducting wire Degree, n is transposition interval gear number, and C is winding conducting wire thickness, and B is the thickness of winding cushion block 3, b be around The width of group cushion block 3, in expanded view as shown in Figure 2, D is for rising interval two endpoint locations of layer transposition Distance (i.e. interval two the end points positions of liter layer transposition when this winding is not unfolded between two cushion blocks at place Put the arc length between two cushion blocks at place)；

(1) relative dimensions of interior oxhorn pad 1:

The inner arc radius R of interior oxhorn pad_a1=r, the inner arc of interior oxhorn pad is concentric with winding, as n > 3 time, interior cattle Center arc length L of the inner arc of angle pad_a1=(n-1) L₁+ b ÷ 2, when n < when 3, the center arc of the inner arc of interior oxhorn pad Long L_a1=(n-0.5) L₁+ b ÷ 2, wherein, L₁Ratio for girth in winding Yu total gear number；L₁It is to pass through Winding inside radius calculates, and gear number refers to that winding is by the region quantity after stay centrage decile；Such as Fig. 1 Shown in RADIAL be stay centrage, the transposition interval gear number n=5 in Fig. 1；

The outer arc of interior oxhorn pad is divided into head section and main paragraph, the radius of the head section of the outer arc of interior oxhorn pad R_a2=r+A, the radius R of the main paragraph of the outer arc of interior oxhorn pad_a3=r+A, the head section circle of the outer arc of interior oxhorn pad The heart is concentric with winding, radial distance H between outer arc head section and the inner arc of interior oxhorn pad of interior oxhorn pad₁=A, Arc length L of the outer arc head section of interior oxhorn pad_a2=d+ Δ, Δ=5～10mm, expanded view as shown in Figure 2, d is Vertical dimension after the shears mouth expansion formed during winding conducting wire transposition, the computing formula of d is:

$d=\frac{\frac{D}{2}\&times;(C-\mathrm{\&delta;})}{C+B};$

In this formula, δ is the head end thickness of interior oxhorn pad, δ=3～6mm；In embodiment of the present utility model, The head end desirable 5mm of thickness δ of this interior oxhorn pad.

Radial height (inner arc of i.e. interior oxhorn pad and the outer arc master of interior oxhorn pad of the end of oxhorn pad in setting Radial distance between body section) K₁=1～3mm, in embodiment of the present utility model, the end of interior oxhorn pad Radial height K₁Desirable 2mm.An end points M of the end of oxhorn pad within Fen Bie₁Head section with outer arc End points M₂For the center of circle, and draw two circular arcs with r+A for radius respectively, be interior with the intersection point of these two circular arcs The center of circle of the outer arc main paragraph of oxhorn pad, and draw from M with r+A for radius₁Point arrives M₂The interior oxhorn pad of point The main paragraph of outer arc；

(2) relative dimensions of outer oxhorn pad 2:

The outer arc radius R of outer oxhorn pad_b1=R, the outer arc of outer oxhorn pad is concentric with winding, as n > 3 time, outer cattle Center arc length L of the outer arc of angle pad_b1=(n-1) L₂+ b ÷ 2, when n < when 3, the center of the outer arc of outer oxhorn pad Arc length L_b1=(n-0.5) L₂+ b ÷ 2, wherein, L₂Ratio for winding outer perimeter Yu total gear number；L₂It is logical Cross what winding outer radius calculated；

The inner arc of outer oxhorn pad is divided into head section and main paragraph, the radius of the head section of the inner arc of outer oxhorn pad R_b2=R-A, the radius R of the main paragraph of the inner arc of outer oxhorn pad_b3=R_a3+ A × (N-1)+m, m is for reserved cold But by the radial size of oil duct, m=2～4mm, in a particular embodiment, the desirable 3mm of m, N are radial full Number of lead wires during circle, the head section center of circle of the inner arc of outer oxhorn pad is concentric with winding, the inner arc head section of outer oxhorn pad And radial distance H between the outer arc of outer oxhorn pad₂=A, arc length L of the inner arc head section of outer oxhorn pad_b2=L_a2；

Set the end of outer oxhorn pad radial height (inner arc of the outer arc of outer oxhorn pad and outer oxhorn pad Radial distance between main paragraph) K₂=1～3mm, in a particular embodiment, this K₂Desirable 2mm, outer cattle The main paragraph of the inner arc of angle pad is identical with the main paragraph center of circle of the outer arc of interior oxhorn pad, within the outer arc of oxhorn pad The main paragraph center of circle be the center of circle, with R_b3Must go out for radius the main paragraph of inner arc of oxhorn pad；

Process as it is shown on figure 3, the head of interior oxhorn pad and outer oxhorn pad all does groove, the head end of both grooves Thickness (oxhorn pad and the head end thickness of outer oxhorn pad in i.e.) is δ.In a particular embodiment, this groove The desirable 5mm of head end thickness.Vertical length S=d (the i.e. winding conducting wire of the groove of interior oxhorn pad and outer oxhorn pad The vertical dimension of the shears mouth formed during transposition), interior oxhorn pad and outer oxhorn pad its remaining part in addition to head groove The thickness T divided is equal to winding conducting wire thickness C.

The foregoing is only embodiment of the present utility model, not thereby limit the scope of the claims of the present utility model, Every equivalent structure utilizing this utility model description and accompanying drawing content to be made or equivalence flow process conversion, or directly Connect or be indirectly used in other relevant technical fields, be the most in like manner included in patent protection model of the present utility model In enclosing.

Claims (1)

1. a structure for the high-power transformer wire winding transposition oxhorn pad of no-float, its feature exists In: this oxhorn pad includes the oxhorn pad being positioned at inside winding and is positioned at the outer oxhorn pad outside winding, interior cattle Angle pad and outer oxhorn pad are respectively provided with inner arc and outer arc, and the outer arc of interior oxhorn pad and the inner arc of outer oxhorn pad are divided into Head section and main paragraph, on axis of winding, interior oxhorn pad and outer oxhorn pad all and be provided with between winding conducting wire around Group cushion block；

The inner arc radius R of interior oxhorn pad_a1=r, r are winding inside radius, and the inner arc of interior oxhorn pad is concentric with winding, As transposition interval gear number n > 3, center arc length L of the inner arc of interior oxhorn pad_a1=(n-1) L₁+ b ÷ 2, when changing Bit interval gear number n < when 3, center arc length L of the inner arc of interior oxhorn pad_a1=(n-0.5) L₁+ b ÷ 2, wherein, L₁For the ratio of girth in winding Yu total gear number of winding, b is the width of winding cushion block；Outside interior oxhorn pad The radius R of the head section of arc_a2=r+A, the radius R of the main paragraph of the outer arc of interior oxhorn pad_a3=R_a2=r+A, wherein, A is the radial height of winding conducting wire；The head section center of circle of the outer arc of interior oxhorn pad is concentric with winding, interior oxhorn pad Radial distance H between the inner arc of outer arc head section and interior oxhorn pad₁=A, the arc length of the outer arc head section of interior oxhorn pad L_a2=d+ Δ, Δ=5～10mm, d is the vertical dimension of the shears mouth formed during winding conducting wire transposition, the calculating of d Formula is:

$d=\frac{\frac{D}{2}\&times;(C-\mathrm{\&delta;})}{C+B};$

In this formula, δ is the head end thickness of interior oxhorn pad, δ=3～6mm, and C is winding conducting wire thickness, and D is for rising The distance between two cushion blocks at interval two endpoint locations of layer transposition, B is the thickness of winding cushion block；Interior cattle The radial height K of the end of angle pad₁=1～3mm, the main paragraph of the outer arc of interior oxhorn pad is connected on interior oxhorn pad End and interior oxhorn pad outer arc head section between；

The outer arc radius R of outer oxhorn pad_b1=R, R are winding outer radius, and the outer arc of outer oxhorn pad is concentric with winding, As transposition interval gear number n > 3, center arc length L of the outer arc of outer oxhorn pad_b1=(n-1) L₂+ b ÷ 2, when Transposition interval gear number n < when 3, center arc length L of the outer arc of outer oxhorn pad_b1=(n-0.5) L₂+ b ÷ 2, wherein, B is the width of winding cushion block, L₂Ratio for winding outer perimeter Yu total gear number of winding；

The radius R of the head section of the inner arc of outer oxhorn pad_b2=R-A, A are the radial height of winding conducting wire, outer oxhorn pad The radius R of main paragraph of inner arc_b3=R_a3+ A × (N-1)+m, m is the size in reserved cooling oil road, M=2～4mm, N are number of lead wires during radial full circle, and the head section center of circle of the inner arc of outer oxhorn pad is concentric with winding, Radial distance H between inner arc head section and the outer arc of outer oxhorn pad of outer oxhorn pad₂=A, the inner arc of outer oxhorn pad Arc length L of head section_b2=L_a2；

The radial height K of the end of outer oxhorn pad₂=1～3mm, the main paragraph of the inner arc of outer oxhorn pad and interior cattle The main paragraph center of circle of the outer arc of angle pad is identical, and the main paragraph of the inner arc of outer oxhorn pad is connected on the end of outer oxhorn pad Between the head section of the inner arc of end and outer oxhorn pad；

The head of interior oxhorn pad and outer oxhorn pad is respectively provided with groove, and the head end thickness of this groove is δ, hanging down of groove Straight length S=d, the thickness of interior oxhorn pad and outer oxhorn pad remainder in addition to head groove is T, and T=C.