CN207925262U - With the transformer shielded between coil cake - Google Patents
With the transformer shielded between coil cake Download PDFInfo
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- CN207925262U CN207925262U CN201721921760.1U CN201721921760U CN207925262U CN 207925262 U CN207925262 U CN 207925262U CN 201721921760 U CN201721921760 U CN 201721921760U CN 207925262 U CN207925262 U CN 207925262U
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- coil cake
- screening arrangement
- coil
- cake
- outer diameter
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Abstract
The utility model is related to the transformer shielded between coil cake, including：At least two coil cakes, along the axially stacked arrangement of coil cake, adjacent two coil cakes are separated each other by oil duct；And at least one screening arrangement, screening arrangement are placed in the oil duct between two adjacent coil cakes, the current potential of the outer diameter of screening arrangement is equal with the current potential of the outer diameter of coil cake, and the outer diameter of screening arrangement is less than or equal to the outer diameter of adjacent coil cake.The technical solution of the utility model solves the problems, such as that the chamfering field strength of the internal side diameter of the relevant technologies coil cake and outside diameter is excessive, reduces manufacture risk, improves Product Safety.
Description
Technical field
The utility model relates generally to transformer.Specifically, the utility model is related to the transformation shielded between coil cake
Device.
Background technology
In some arrangements of transformer, the coil of transformer uses the coil cake of arranged stacked, quilt between coil cake
Oil duct for providing heat dissipation separates.When the oil duct between coil cake is larger, two neighboring coil cake is apart from larger, two coils
The axial distance of the outside diameter of cake is farther out.This can cause the internal side diameter of coil cake and the chamfering field strength of outside diameter excessive, coil cake
The equipotential line of outside diameter is to internal side diameter severe bends.
Utility model content
The utility model embodiment provides a kind of transformer for having and being shielded between coil cake, at least to solve coil cake
The excessive problem of the chamfering field strength of internal side diameter and outside diameter.
According to the one side of the utility model embodiment, provide with the transformer shielded between coil cake, including：Extremely
Few two coil cakes, along the axially stacked arrangement of coil cake, adjacent two coil cakes are separated each other by oil duct；And screen
Device is covered, screening arrangement is placed in the oil duct between two adjacent coil cakes, current potential and the coil cake of the outer diameter of screening arrangement
Outer diameter current potential it is equal, the outer diameter of screening arrangement is less than or equal to the outer diameter of adjacent coil cake.
In this way, prevent between coil cake equipotential line to internal diameter lateral bend and chamfering field strength it is excessive.
Further, the outer diameter of screening arrangement is overlapped along the axial direction of coil cake with the outer diameter of coil cake.
In this way, the bending degree of controlling potential line minimizes.
Further, screening arrangement is open loop, and one end of screening arrangement is connected with one in adjacent coil cake,
The other end is placed in oil duct.
In this way, the current potential equal with coil cake is provided for adjusting equipotential line to screening arrangement.
Further, the cross section of screening arrangement is identical as the cross-sectional shape of coil cake.
In this way, screening arrangement prevents the bending of equipotential line in radial any direction.
Further, there is screening arrangement axial centre bore, oil duct to pass through centre bore.
In this way, the heat dissipation effect between two adjacent windings cakes is promoted.
Further, what screening arrangement was divided into more valve screening arrangements divides valve screening arrangement, more valve screening arrangements
Distance along the radial axis away from coil cake of screening arrangement is equal.
In this way, a plurality of oil circuit for flowing through screening arrangement is provided, further between two adjacent windings cakes of promotion
Heat dissipation effect.
Further, screening arrangement is electrostatic ring or shielding line.
In this way it is possible to which diversified forms implement the screening arrangement in the technical program.
In the utility model embodiment, by the way of placing screening arrangement between two neighboring coil cake, improve
The current potential of coil cake internal side diameter, the chamfering field strength of the internal side diameter and outside diameter that solve the relevant technologies coil cake is excessive to ask
Topic reduces manufacture risk, improves Product Safety.
Description of the drawings
Attached drawing described herein is used to provide a further understanding of the present invention, and constitutes one of the utility model
Point, the exemplary embodiment of the utility model and the description thereof are used to explain the utility model, does not constitute to the utility model
Improper restriction.In the accompanying drawings：
Fig. 1 is the schematic diagram of current potential at the coil cake chamfering of transformer in the prior art；
Fig. 2 is the schematic diagram with the transformer shielded between coil cake according to the utility model embodiment；
Fig. 3 is the coil cake chamfering with the transformer shielded between coil cake according to the utility model exemplary embodiment
Locate the schematic diagram of current potential；
Fig. 4 is the schematic diagram with the transformer shielded between coil cake according to the utility model exemplary embodiment；
Fig. 5 is the schematic diagram with the transformer shielded between coil cake according to the utility model exemplary embodiment；
Fig. 6 is the schematic diagram with the transformer shielded between coil cake according to the utility model exemplary embodiment；
Fig. 7 is the schematic diagram with the transformer shielded between coil cake according to the utility model exemplary embodiment.
Specific implementation mode
In order to make those skilled in the art more fully understand the utility model, below in conjunction with the utility model reality
The attached drawing in example is applied, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that described
Embodiment is only the embodiment of the utility model part, instead of all the embodiments.Based on the reality in the utility model
Example is applied, every other embodiment obtained by those of ordinary skill in the art without making creative efforts is all answered
When the range for belonging to the utility model protection.
It should be noted that term " first " in the specification and claims of the utility model and above-mentioned attached drawing,
" second " etc. is for distinguishing similar object, without being used to describe specific sequence or precedence.It should be appreciated that in this way
The data used can be interchanged in the appropriate case, so that the embodiments of the present invention described herein can be in addition at this
In illustrate or description those of other than sequence implement.In addition, term " comprising " and " having " and their any deformation, meaning
Figure be to cover it is non-exclusive include, for example, containing the system of series of steps or module or unit, product or equipment need not
It is limited to the module clearly listed or unit, but may include not listing clearly or intrinsic for these products or equipment
Other modules or unit.
Fig. 1 is the schematic diagram of current potential at the coil cake chamfering of transformer in the prior art.As shown in Figure 1, coil cake 11
And separated by oil duct 15 between 13, since the outside diameter current potential of coil cake is high, coil, therefore outer diameter are not present between two chamferings
Side equipotential line can be to the internal diameter lateral bend in oil duct, and field strength is excessive at chamfering.
According to the utility model embodiment, provide with the transformer shielded between coil cake.Fig. 2 is new according to this practicality
The schematic diagram with the transformer shielded between coil cake of type embodiment, as shown in Fig. 2, with the transformer shielded between coil cake
2 include：At least two coil cakes, for example, first coil cake 21 and the second coil cake 23 are shown in Fig. 2, along the axis of coil cake
Line BB ' arranged stackeds, adjacent first coil cake 21 and the second coil cake 23 are separated each other by oil duct 25；And it is at least one
Screening arrangement 27, for example, showing the oil duct 25 that screening arrangement 27 is placed between first coil cake 21 and the second coil cake 23 in Fig. 2
In, the current potential of the outer diameter of screening arrangement 27 is equal with the current potential of outer diameter of first coil cake 21 and the second coil cake 23, shielding dress
27 outer diameter is set on the direction AA ' vertical with the central axes BB ' of first coil cake 21 and the second coil cake 23 without departing from adjacent
First coil cake 21 and the second coil cake 23 outer diameter.
Between the first coil cake 21 and the second coil cake 23 of arranged stacked, oil duct 25 provides to radiate for coil cake
Means.There is distance corresponding with oil circuit width in first coil cake 21 and adjacent two chamferings of the second coil cake 23.If with
Traditional approach arranges coil cake, then equipotential line will be from the outer diameter side of first coil cake 21 and the second coil cake 23 to central axes BB '
Bending, causes field strength at the chamfering of first coil cake 21 and the second coil cake 23 excessive.In the technical solution of the utility model,
Screening arrangement 27 is arranged in oil duct 25.The electricity of the outer diameter and 23 outer diameter of first coil cake 21 and the second coil cake of screening arrangement 27
Position is equal, the outer diameter of screening arrangement 27 on the directions AA ' without departing from the outer diameter of first coil cake 21 and the second coil cake 23, this
Sample, the current potential of the outer diameter of screening arrangement 27 will stop the current potential in outer diameter direction along first coil cake 21 and the second coil cake 23
Line is bent to the central axes directions BB ', reduces field strength at chamfering, as shown in Figure 3.
In this way, prevent between coil cake equipotential line to internal diameter lateral bend and chamfering field strength it is excessive, reduce manufacture wind
Product Safety is improved in danger.
Fig. 4 is the coil cake chamfering with the transformer shielded between coil cake according to the utility model exemplary embodiment
Locate the schematic diagram of current potential.As shown in figure 4, according to the utility model exemplary embodiment, the outer diameter of screening arrangement 27 is along First Line
The axial CC ' of circle cake 21 and the second coil cake 23 is overlapped with the outer diameter of coil cake.The outer diameter of screening arrangement 27 is in the position of oil duct
It is middle that the current potential equal with first coil cake 21 and the second coil cake 23 is provided, in order to stop equipotential line to internal diameter lateral bend, therefore,
The outer diameter of screening arrangement 27 and the outer diameter of first coil cake 21 and the second coil cake 23 are placed on same line, stop the curved of equipotential line
Song, and the bending of equipotential line outward is not caused.
In this way, the bending degree of controlling potential line minimizes.
Fig. 5 is the schematic diagram with the transformer shielded between coil cake according to the utility model exemplary embodiment.Screen
It is open loop to cover device 27, as shown in figure 5, one end 271 of screening arrangement 27 is connected with one in adjacent coil cake, in Fig. 5
In, the connected coil cake shown is the second coil cake 23, and the other end 273 of screening arrangement 27 is placed in oil duct.Adjacent two
A coil cake is connected in parallel, and therefore, the voltage of first coil cake 21 and the second coil cake 23 is equal, 21 He of first coil cake
The outside diameter current potential of second coil cake 23 is equal, when coil cake is powered, does not have electric current in open loop screening arrangement 27, but has
Voltage identical with the second coil cake 23 makes the outer diameter in screening arrangement 27 provide and first coil cake 21 and the second coil cake 23
The equal current potential of outer diameter.It should be understood that screening arrangement one end is connected with any one adjacent coil cake, the other end is then placed in
In oil duct.
In this way, the current potential equal with coil cake is provided for adjusting equipotential line to screening arrangement.
According to the utility model exemplary embodiment, the cross section of screening arrangement is identical as the cross-sectional shape of coil cake.
For example, the cross section of coil cake is circle, the cross section of screening arrangement is also circle so that when along the central axes BB ' in Fig. 2
When direction is observed, first coil cake 21 and the second coil cake 23 and between screening arrangement 27 be multiple stackings circle.Screen
The outer diameter for covering device 27 is maintained in radial any direction and first coil cake 21 and the second coil cake 23 on same line.
In this way, screening arrangement prevents equipotential line to be bent from outer radial internal diameter in radial any direction.
Fig. 6 is the schematic diagram with the transformer shielded between coil cake according to the utility model exemplary embodiment.Such as
Shown in Fig. 6, there is screening arrangement 27 axial centre bore 29 to pass through for oil duct 25.Screening arrangement 27 can be formed as annular,
There are centre bore 29, the oil ducts 25 of the longitudinal both sides of centre bore 29 to be connected for centre, and oil or coolant liquid can pass through centre bore 29.
In this way, the heat dissipation effect between two adjacent windings cakes is promoted.
Fig. 7 is the schematic diagram with the transformer shielded between coil cake according to the utility model exemplary embodiment.Such as
Shown in Fig. 7, what screening arrangement was divided into more valve screening arrangements divides valve screening arrangement.In the exemplary embodiment, with example
The mode of property shows two sub- screening arrangements, the respectively first sub- screening arrangement 371 and the second sub- screening arrangement 373, first
The distance phase of sub- screening arrangement 371 and the second sub- screening arrangement 373 along the radial BB ' away from the central axes of coil cake of screening arrangement
Deng.That is, the first sub- screening arrangement 371 and the second sub- screening arrangement 373 are arranged around central axes BB ' so that the first son
The outer diameter of screening arrangement 371 and the second sub- screening arrangement 373 prevents equipotential line from First Line in any direction of plane where AA '
Enclose the outer radial internal diameter bending of cake 21 and the second coil cake 23.Meanwhile the mode for dividing valve to arrange makes 371 He of the first sub- screening arrangement
Second sub- screening arrangement 373 not only allows oil duct longitudinally through also allowing in the first sub- screening arrangement 371 and the second son at center
In the space of the coplanar separation of screening arrangement 373 allow oil duct laterally across.
In this way, a plurality of oil circuit for flowing through screening arrangement is provided, further between two adjacent windings cakes of promotion
Heat dissipation effect.
The embodiment of two sub- screening arrangements is only shown in the present exemplary embodiment, it should be appreciated that more valves can be set
Sub- screening arrangement, with provide it is more allow oil circuits by path.Also, it is open loop respectively per valve screening arrangement, and
Difference can be connected with one end coil cake adjacent with one, and the other end is connected with another adjacent windings cake, with offer and coil
The equal current potential of cake.
Further, screening arrangement is electrostatic ring or shielding line.Electrostatic ring may be used in the technical solution of the utility model
Or shielding line is as screening arrangement 27.Ring skeleton may be used in electrostatic ring, and outside is coated with conductor layer and is made.Shielding line
Toroidal conductor, such as copper wire may be used, be coated with insulating layer in outer layer and be made.The two is using construction described above
When, it can provide for preventing equipotential line from, to the current potential of internal diameter lateral bend, realizing the effect for reducing field strength at chamfering from outside diameter
Fruit.
In above-described embodiment of the utility model, all emphasize particularly on different fields to the description of each embodiment, in some embodiment
The part not being described in detail may refer to the associated description of other embodiment.
In several embodiments provided by the utility model, it should be understood that disclosed technology contents can pass through it
Its mode is realized.Wherein, the apparatus embodiments described above are merely exemplary, such as the unit or module are drawn
Point, only a kind of division of logic function, formula that in actual implementation, there may be another division manner, for example, multiple units or module or
Component can be combined or can be integrated into another system, or some features can be ignored or not executed.Another point is shown
The mutual coupling, direct-coupling or communication connection shown or discussed can be by some interfaces, between module or unit
Coupling or communication connection are connect, can be electrical or other forms.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these improve and
Retouching also should be regarded as the scope of protection of the utility model.
Claims (7)
1. with the transformer shielded between coil cake, which is characterized in that including：
At least two coil cakes (21,23), the axially stacked arrangement along the coil cake (21,23), described in adjacent two
Coil cake (21,23) is separated each other by oil duct (25)；And
At least one screening arrangement (27), the screening arrangement (27) are placed between the coil cake of adjacent two (21,23)
The oil duct (25) in, the current potential of the current potential of the outer diameter of the screening arrangement (27) and the outer diameter of the coil cake (21,23)
Equal, the outer diameter of the screening arrangement (27) is less than or equal to the outer diameter of the adjacent coil cake (21,23).
2. according to claim 1 with the transformer shielded between coil cake, which is characterized in that the screening arrangement (27)
Outer diameter overlapped with the outer diameter of the coil cake (21,23) along the axial direction of the coil cake.
3. according to claim 1 or 2 with the transformer shielded between coil cake, which is characterized in that the screening arrangement
(27) it is open loop, and one end of the screening arrangement (27) is connected with one in the adjacent coil cake (21,23), separately
One end is placed in the oil duct (25).
4. according to claim 1 or 2 with the transformer shielded between coil cake, which is characterized in that the screening arrangement
(27) cross section is identical as the cross-sectional shape of the coil cake (21,23).
5. according to any one of claim 1 or 2 with the transformer shielded between coil cake, which is characterized in that described
There is screening arrangement (27) axial centre bore (29), the oil duct (25) to pass through the centre bore (29).
6. according to claim 1 with the transformer shielded between coil cake, which is characterized in that the screening arrangement (27)
Divide valve screening arrangement by what more valve screening arrangements (371,373) formed, sub- screening arrangement (371,373) is along institute described in more valves
The distance for stating the radial axis away from the coil cake (21,23) of screening arrangement (27) is equal.
7. according to claim 1 or 2 with the transformer shielded between coil cake, which is characterized in that the screening arrangement
(27) it is electrostatic ring or shielding line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721921760.1U CN207925262U (en) | 2017-12-29 | 2017-12-29 | With the transformer shielded between coil cake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721921760.1U CN207925262U (en) | 2017-12-29 | 2017-12-29 | With the transformer shielded between coil cake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207925262U true CN207925262U (en) | 2018-09-28 |
Family
ID=63615933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721921760.1U Active CN207925262U (en) | 2017-12-29 | 2017-12-29 | With the transformer shielded between coil cake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207925262U (en) |
-
2017
- 2017-12-29 CN CN201721921760.1U patent/CN207925262U/en active Active
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