CN208093339U - A kind of transformer and potential device - Google Patents
A kind of transformer and potential device Download PDFInfo
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- CN208093339U CN208093339U CN201820321032.5U CN201820321032U CN208093339U CN 208093339 U CN208093339 U CN 208093339U CN 201820321032 U CN201820321032 U CN 201820321032U CN 208093339 U CN208093339 U CN 208093339U
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Abstract
The utility model provides a kind of potential device, including primary skeleton, secondary framework, primary coil, secondary coil and iron core, the primary skeleton and the secondary framework are set in the iron core, the primary coil is wrapped on the lateral wall of the primary skeleton, the lateral wall of the secondary framework is equipped with the multiple winding slots formed by multilayer insulation partition board, any insulating barrier is equipped with thread passing port, and the secondary coil is wrapped in multiple winding slots.The transformer provided by the utility model can effectively simplify working process link, and ensure the consistency of winding coil performance everywhere, and then improve the stability of high voltage package performance.The utility model also provides a kind of potential device.
Description
Technical field
The utility model is related to transformer technology fields, more particularly, to a kind of transformer and potential device.
Background technology
Currently, high voltage package is made of enameled wire and skeleton, when assembling high voltage package, need enameled wire surrounding skeleton layer by layer
Winding, and interlayer places the insulating materials such as one layer of insulation strip, polyester film, adhesive tape and is put into protection after wound good coil
In shell, and resin is circulated into the gap between preheated coil and protective shell, resin at room temperature spontaneous curing with reality
Existing embedding.
In the prior art, usually using the insulating materials such as insulation strip, polyester film or adhesive tape come to coil and skeleton into
Row insulation processing, but just because of this, not only increase additional working process link, and thus introduce it is unnecessary it is artificial because
The influence of element, such as cause product using since the barrier of insulation strip, resin are hard to permeate into coil inside in embedding
Winding copper wire is easy breakdown in journey, and the glue of adhesive tape is easily dry and easily adheres to impurity, and adhesive tape is caused loosely to lead to product rejection
Etc., these consistency for eventually leading to winding coil performance everywhere are difficult to, can not even ensure at all, to directly influence
The stability of high voltage package performance.
Utility model content
The utility model embodiment provides a kind of transformer and potential device, to solve existing high pressure covered enamelled wire layer
Between be isolated using insulating materials, not only increased additional working process link, but also be difficult to ensure winding coil performance one everywhere
The technical issues of cause property, to effectively simplify working process link, and ensures the consistency of winding coil performance everywhere, in turn
Improve the stability of high voltage package performance.
In order to solve the above-mentioned technical problem, the utility model embodiment provides a kind of transformer, including primary skeleton, secondary
Skeleton, primary coil, secondary coil and iron core, the primary skeleton and the secondary framework are set in the iron core,
The primary coil is wrapped on the lateral wall of the primary skeleton, and the lateral wall of the secondary framework is equipped with by multilayer insulation
Multiple winding slots that partition board is formed, and any insulating barrier is equipped with thread passing port, the secondary coil crosses line by described
Mouth is wrapped in multiple winding slots.
Preferably, the distance between insulating barrier described in adjacent two layers is equal, and insulating barrier described in multilayer
Thread passing port is located along the same line.
Preferably, the primary skeleton is equipped with several limit ribs towards the end of the secondary framework, described secondary
One end side wall of grade skeleton is resisted against on the limit rib.
Preferably, the material of any insulating barrier is PBT material.
Preferably, the iron core is made of multilayer lamination stacking, and lamination described in any layer includes E type silicon steel
Piece and I type silicon steel sheets；
The E types silicon steel sheet includes erecting section, the first crosspiece, the second crosspiece and third crosspiece, and the one of first crosspiece
End is fixed on one end of the perpendicular section, and one end of the third crosspiece is fixed on the other end of the perpendicular section, and described second
Crosspiece is located at the centre of first crosspiece and the third crosspiece, and one end of second crosspiece is fixed on the perpendicular section
On, the other end of first crosspiece, the other end of second crosspiece, the third crosspiece the other end be both connected to it is described
On I type silicon steel sheets.
Preferably, iron core E types silicon steel sheet described in multilayer and the I types silicon steel sheet are staggeredly stacked and constitute,
The perpendicular section of E types silicon steel sheet and I types silicon steel sheet described in adjacent bed are stacked on top of each other described in any layer, and I types silicon steel sheet described in same layer and neighbour
The perpendicular section of the layer E types silicon steel sheet is stacked on top of each other.
Preferably, the perpendicular section of any E types silicon steel sheet is equipped with first positioning hole, any I types silicon steel
On piece is equipped with second location hole, I type silicon steel sheets described in the first positioning hole and adjacent bed in the perpendicular section of E type silicon steel sheets described in any layer
Second location hole be interconnected.
In order to solve identical technical problem, the utility model also provides a kind of potential device, including shell and above-mentioned
Transformer；Installation cavity is equipped in the shell, the transformer is placed in the installation cavity, and the transformer and the peace
Embedding insulating materials forms insulating layer in gap between the inner wall behaveing affectedly.
Preferably, the insulating materials is epoxy resin.
Preferably, the potential device further includes output cable, input cable, resistance and insulation silicone tube；
The side wall of the shell is equipped with the output through-hole for supplying the output cable to wear and is worn for the input cable
Input through-hole, the output cable is electrically connected by the resistance with the secondary coil, the input cable with it is described just
Grade coil electrical connection, the resistance are set in the insulation silicone tube.
Compared with the prior art, the advantageous effect of the utility model embodiment is, passes through insulating barrier shape described in multilayer
At multiple winding slots, the secondary coil is wrapped in multiple winding slots, and insulating barrier described in multilayer can have
Effect ground keeps apart secondary coil described in any layer, comes without using insulating materials such as insulation strip, polyester film or adhesive tapes
Insulation processing is carried out to the secondary coil and secondary framework, causes to increase additional working process link, to effectively simple
Change working process link, avoids human factor and cause the influence of secondary coil performance, and then improve the secondary coil
The stability of energy；Meanwhile any insulating barrier is equipped with thread passing port, the thread passing port is conducive to twining for the secondary coil
Around, and ensure that the equal length of secondary coil described in any layer, to improve the uniformity of the secondary coil.In this way, institute
It states insulating barrier described in the multilayer on secondary framework and can not only save and the secondary coil is isolated using insulating materials
Working process link, avoiding unnecessary human factor influences, and can ensure time in winding slot described in any layer
The consistency of grade coil performance, to ensure that the performance of high voltage package.
Description of the drawings
Fig. 1 is the structural schematic diagram of the potential device in the utility model embodiment；
Fig. 2 is the structural schematic diagram of the secondary framework in the utility model embodiment；
Fig. 3 is the structural schematic diagram of the primary skeleton in the utility model embodiment；
Fig. 4 is the explosive view of the iron core in the utility model embodiment；
Wherein, 1, primary skeleton；11, limit rib；12, coiling hanging feet；13, the first insulating end plate；2, secondary framework；21,
Insulating barrier；211, thread passing port；22, the second insulating end plate；3, iron core；31, E types silicon steel sheet；311, first positioning hole；312, it erects
Section；313, the first crosspiece；314, the second crosspiece；315, third crosspiece；32, I types silicon steel sheet；321, second location hole；4, shell；
41, output cable；42, input cable；43, insulate silicone tube.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts
The every other embodiment obtained, shall fall within the protection scope of the present invention.
It please refers to Fig.1 and Fig. 2, the preferred embodiment in the utility model provides a kind of transformer, including primary skeleton 1, secondary
Skeleton 2, primary coil, secondary coil and iron core 3, the primary skeleton 1 and the secondary framework 2 are set in the iron core
In 3, the primary coil is wrapped on the lateral wall of the primary skeleton 1, and the lateral wall of the secondary framework 2 is equipped with by more
Multiple winding slots that layer insulating barrier 21 is formed, and any insulating barrier 21 is equipped with thread passing port 211, the secondary coil
It is wrapped in multiple winding slots by the thread passing port 211.
Compared with the prior art, the advantageous effect of the utility model embodiment is, passes through insulating barrier 21 described in multilayer
The multiple winding slots formed, the secondary coil are wrapped in multiple winding slots, 21 energy of insulating barrier described in multilayer
It is enough effectively to keep apart secondary coil described in any layer, without using insulation materials such as insulation strip, polyester film or adhesive tapes
Material to carry out insulation processing to the secondary coil and secondary framework 2, causes to increase additional working process link, to effectively
Ground simplifies working process link, avoids human factor and causes the influence of secondary coil performance, and then improves the secondary wire
Enclose the stability of performance.
Meanwhile any insulating barrier 21 is equipped with thread passing port 211, the thread passing port 211 is conducive to the secondary wire
The winding of circle, and ensure that the equal length of secondary coil described in any layer, to improve the uniformity of the secondary coil.This
Sample, insulating barrier 21 described in the multilayer on the secondary framework 2 can not only be saved the secondary coil using insulating materials
The working process link being isolated, avoiding unnecessary human factor influences, and can ensure coiling described in any layer
The consistency of secondary coil performance in slot, to ensure that the performance of high voltage package.
Referring to Fig. 2, in the utility model embodiment, the distance between insulating barrier 21 described in adjacent two layers is equal,
And the thread passing port 211 of insulating barrier 21 described in multilayer is located along the same line.The thread passing port 211 so that it is two neighboring it is described around
Wire casing is interconnected, consequently facilitating the coiling of the secondary coil, is conducive to prevent the secondary coil from sending out during the winding process
Raw deformation, and then improve the reliability of secondary coil described in coiling.
In the present embodiment, it should be noted that the quadrangle of any insulating barrier 21 is arc-shaped, the insulating barrier
On thread passing port 211 to lower recess be molded, meanwhile, the thread passing port 211 is arc-shaped, is being twined to be conducive to the secondary coil
Around when, smoothly slide into the thread passing port 211, consequently facilitating the secondary coil is wrapped in the winding slot, and then advantageous
In the difficulty of processing of the simplification transformer.
Referring to Fig. 3, in the utility model embodiment, the primary skeleton 1 is set towards the end of the secondary framework 2
There are several limit ribs 11, one end side wall of the secondary framework 2 to be resisted against on the limit rib 11, to which the limit is secondary
Skeleton 2 and the primary skeleton 1 are spaced apart, to ensure that the secondary coil and the primary coil work normally.
It should be understood that the secondary framework 2 one end and the primary skeleton 1 far from the primary skeleton 1 are far from institute
The one end for stating secondary framework 2 is equipped with limit rib 11, and the iron core 3 is set in the secondary framework 2 and the primary skeleton 1
When interior, the iron core 3 is resisted against on the fiber bar.
Fig. 2 and Fig. 3 are please referred to, in the utility model embodiment, the both ends of the primary skeleton 1 are each provided with one the
One insulating end plate 13, first insulating end plate 13 can reinforce the intensity of the primary skeleton 1, first insulating end plate 13
Outer diameter be more than the outer diameter of the primary skeleton 1, to have the function of limiting to the primary coil.
Likewise, the both ends of the secondary framework 2 are each provided with second insulating end plate 22, second insulating end plate
22 can reinforce the intensity of the secondary framework 2, and the outer diameter of second insulating end plate 22 is more than the outer diameter of the insulating barrier,
To have the function of limit to the secondary coil.
In the utility model embodiment, the material of any insulating barrier 21 is PBT material.PBT material has excellent
Good insulation performance, and electric performance stablity can be also kept in high temperature, the insulating barrier 21 is made of the PBT material, from
And ensure that the isolation effect of the secondary coil, and then it is effectively improved the stability of the secondary coil performance.It can be with
Understand, in the present embodiment, the primary skeleton 1, the secondary framework 2 are all made of PBT material.
Fig. 3 and 4 are please referred to, in the utility model embodiment, the iron core 3 is made of 3 stackings of multilayer iron core, any
The layer iron core 3 includes E types silicon steel sheet 31 and I types silicon steel sheet 32；The E types silicon steel sheet 31 includes perpendicular section 312, the first crosspiece
313, the second crosspiece 314 and third crosspiece 315, one end of first crosspiece 313 are fixed on one end of the perpendicular section 312
On, one end of the third crosspiece 315 is fixed on the other end of the perpendicular section 312, and second crosspiece 314 is located at described the
The centre of one crosspiece 313 and the third crosspiece 315, and one end of second crosspiece 314 is fixed in the perpendicular section 312,
The other end of first crosspiece 313, the other end of second crosspiece 314, the third crosspiece 315 the other end be all connected with
On the I types silicon steel sheet 32.
In the present embodiment, it should be noted that according to the iron core 3 of monoblock, due to the resistance and sectional area phase of conductor
It closes, resistance is very small, and the electric current generated in iron core 3 is very big, and the heat that electric current generates even can melt monoblock iron core
3.And the iron core 3 is made of 3 stackings of multilayer iron core, and iron core 3 described in any layer includes E types silicon steel sheet 31 and I type silicons
Steel disc 32, can be effectively prevented from causes iron core 3 to melt since electric current leads to the problem of heat, to ensure that the transformer
Performance.
Referring to Fig. 4, in the utility model embodiment, the iron core 3 E types silicon steel sheet 31 and I described in multilayer
Type silicon steel sheet 32 is staggeredly stacked composition, the perpendicular section 312 and 32 phase of I types silicon steel sheet described in adjacent bed of E types silicon steel sheet 31 described in any layer
It is mutually stacked, and I types silicon steel sheet 32 and the perpendicular section 312 of E types silicon steel sheet 31 described in adjacent bed described in same layer are stacked on top of each other.Compared to existing
Transformer core is that the side silicon steel sheet folded by heap and other side silicon steel sheet correspondence are grouped together, the E of the present embodiment
Type silicon steel sheet 31 and the I types silicon steel sheet 32 are staggeredly stacked and the seam of each layer magnetic circuit can be made mutually to be staggered, to reduce seam crossing
The magnetic resistance of air gap and magnetic circuit reduce loss to reduce exciting current, improve power factor when operation.
Referring to Fig. 4, in the utility model embodiment, the perpendicular section 312 of any E types silicon steel sheet 31 is equipped with first
Location hole 311, any I types silicon steel sheet 32 are equipped with second location hole 321, the perpendicular section of E types silicon steel sheet 31 described in any layer
First positioning hole 311 and the second location hole 321 of I types silicon steel sheet 32 described in adjacent bed on 312 are interconnected, consequently facilitating nut
Pass through and convenient for the iron core 3 assembly, and then be conducive to simplify process operation difficulty.
Referring to Fig. 4, in the utility model embodiment, confession is equipped in the primary skeleton 1 and the secondary framework 2
The through-hole that second crosspiece 314 is worn, consequently facilitating the iron core 3 and the primary skeleton 1, the dress of the secondary framework 2
Match.
Referring to Fig. 1, in order to solve identical technical problem, the utility model also provides a kind of potential device, including shell
Body 4 and above-mentioned transformer；Installation cavity is equipped in the shell 4, the transformer is placed in the installation cavity, and the change
Embedding insulating materials forms insulating layer in gap between depressor and the inner wall of the installation cavity.
In the present embodiment, it should be noted that use insulation strip, polyester film or glue compared to existing transformer
The insulating materials such as band to carry out insulation processing to the secondary coil and secondary framework 2, insulation described in the multilayer of the present embodiment every
Plate 21 can be effectively prevented from epoxy resin and be hard to permeate into coil inside, product is caused to exist in the insulating materials embedding
Winding copper wire is easy breakdown problem during use, to ensure that the isolation effect of the secondary coil, simplifies simultaneously
Working process link, efficiently avoids human factor and causes the influence of secondary coil performance, and then improve the secondary
The stability of coil performance.
Preferably, the insulating materials includes but not limited to epoxy resin, by the secondary coil in the secondary framework 2
The winding slot on wind n-layer, every layer of m circle, and by the secondary framework 2 for winding the secondary coil and wind primary line
The primary skeleton 1 of circle is put into together in the cavity of the shell 4, and is preheated at a certain temperature, and the epoxy resin is poured into
Into the gap between 4 cavity of the preheated secondary coil, the primary coil and shell, the epoxy resin is in room temperature
Lower spontaneous curing achievees the purpose that insulation, shockproof, moisture-proof and heat conduction to realize the embedding of the transformer.
Referring to Fig. 1, in the utility model embodiment, the potential device further includes output cable 41, input cable
42, resistance and insulation silicone tube 43；The side wall of the shell 4 be equipped with the output through-hole worn for the output cable 41,
And for the input through-hole that the input cable 42 is worn, the output cable 41 is electrically connected by the resistance and the secondary coil
It connects, the input cable 42 is electrically connected with the primary coil, and the resistance is set in the insulation silicone tube 43.
Referring to Fig. 3, in the utility model embodiment, it should be noted that the primary skeleton 1 is equipped with several
Coiling hanging feet 12, the input cable 42 are wrapped on the coiling hanging feet 12, are conducive to improve the firm of the primary coil
Property and coiling convenient for the primary coil.
In the present embodiment, the assembling process example of the potential device is as follows：
The secondary coil is wrapped on the secondary framework 2 first, the primary coil is wrapped in the primary
On skeleton 1, the second crosspiece 314 of every layer of iron core 3 is threaded through to the through-hole of the primary skeleton 1 and the secondary framework 2
It is interior, and by the E types silicon steel sheet 31 and 32 spicing forming type of I types silicon steel sheet, to complete the assembly of the transformer；
Then the transformer is placed in the cavity of the shell 4, by nut fixed form by the transformer
It is fixed in the shell 4；The output cable 41 is connect across the output through-hole with the resistance, the resistance with it is described
Secondary coil connects, and the resistance is protected by the insulation silicone tube 43, and the input cable 42 is then by described defeated
Enter through-hole to connect with the primary coil；
Finally the epoxy resin of liquid is filled into the gap between the transformer and the inner wall of the installation cavity,
It solidifies at room temperature, to form insulating protective layer, to complete the assembly of the potential device.
To sum up, the utility model provides a kind of transformer and potential device, and the transformer includes primary skeleton 1, secondary
Grade skeleton 2, primary coil, secondary coil and iron core 3, the primary skeleton 1 and the secondary framework 2 are set in the iron
In core 3, the primary coil is wrapped on the lateral wall of the primary skeleton 1, the lateral wall of the secondary framework 2 be equipped with by
Multiple winding slots that multilayer insulation partition board 21 is formed, and any insulating barrier 21 is equipped with thread passing port 211, the secondary wire
Circle is wrapped in by the thread passing port 211 in multiple winding slots.The multiple institutes formed by insulating barrier described in multilayer 21
Winding slot is stated, the secondary coil is wrapped in multiple winding slots, and insulating barrier 21 described in multilayer will can effectively appoint
One layer of secondary coil is kept apart, and is come to described time without using insulating materials such as insulation strip, polyester film or adhesive tapes
Grade coil and secondary framework 2 carry out insulation processing, cause to increase additional working process link, to effectively simplify at processing
Link is managed, human factor is avoided and causes the influence of secondary coil performance, and then improve the stabilization of the secondary coil performance
Property；Meanwhile any insulating barrier 21 is conducive to the winding of the secondary coil equipped with thread passing port 211, and ensure that and appoint
The equal length of one layer of secondary coil, to improve the uniformity of the secondary coil.In this way, on the secondary framework 2
Multilayer described in insulating barrier 21 can not only save the working process that the secondary coil is isolated using insulating materials
Link, avoiding unnecessary human factor influences, and can ensure the secondary coil performance in winding slot described in any layer
Consistency, to ensure that the performance of high voltage package.
The above is preferred embodiments of the present invention, it is noted that for the ordinary skill of the art
For personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these are improved and profit
Decorations are also considered as the scope of protection of the utility model.
Claims (10)
1. a kind of transformer, which is characterized in that including primary skeleton, secondary framework, primary coil, secondary coil and iron core,
The primary skeleton and the secondary framework are set in the iron core, and the primary coil is wrapped in the primary skeleton
On lateral wall, the lateral wall of the secondary framework is equipped with the multiple winding slots formed by multilayer insulation partition board, and any described
Insulating barrier is equipped with thread passing port, and the secondary coil is wrapped in by the thread passing port in multiple winding slots.
2. transformer as described in claim 1, which is characterized in that the distance between insulating barrier described in adjacent two layers is equal,
And the thread passing port of insulating barrier described in multilayer is located along the same line.
3. transformer as described in claim 1, which is characterized in that the end of primary skeleton towards the secondary framework is set
There are several limit ribs, one end side wall of the secondary framework to be resisted against on the limit rib.
4. such as claims 1 to 3 any one of them transformer, which is characterized in that the material of any insulating barrier is PBT
Material.
5. transformer as described in claim 1, which is characterized in that the iron core is made of multilayer lamination stacking, any layer
The lamination includes E types silicon steel sheet and I type silicon steel sheets；
The E types silicon steel sheet includes perpendicular section, the first crosspiece, the second crosspiece and third crosspiece, and one end of first crosspiece is solid
It is scheduled on one end of the perpendicular section, one end of the third crosspiece is fixed on the other end of the perpendicular section, second crosspiece
It is fixed in the perpendicular section positioned at one end of the centre of first crosspiece and the third crosspiece, and second crosspiece, institute
State the other end of the first crosspiece, the other end of second crosspiece, the third crosspiece the other end be both connected to the I types silicon
On steel disc.
6. transformer as claimed in claim 5, which is characterized in that iron core E types silicon steel sheet described in multilayer and the I types
Silicon steel sheet is staggeredly stacked composition, and the perpendicular section of E type silicon steel sheets and I types silicon steel sheet described in adjacent bed described in any layer are stacked on top of each other, and same
The layer I types silicon steel sheet and the perpendicular section of E types silicon steel sheet described in adjacent bed are stacked on top of each other.
7. transformer as claimed in claim 6, which is characterized in that it is fixed that the perpendicular section of any E types silicon steel sheet is equipped with first
Position hole, any I types silicon steel sheet are equipped with second location hole, the first positioning in the perpendicular section of E type silicon steel sheets described in any layer
Hole and the second location hole of I type silicon steel sheets described in adjacent bed are interconnected.
8. a kind of potential device, which is characterized in that including shell and such as claim 1~7 any one of them transformer；It is described
Installation cavity is equipped in shell, the transformer is placed in the installation cavity, and the inner wall of the transformer and the installation cavity
Between gap in embedding insulating materials formed insulating layer.
9. potential device as claimed in claim 8, which is characterized in that the insulating materials is epoxy resin.
10. potential device as claimed in claim 8 or 9, which is characterized in that the potential device further includes output cable, defeated
Enter cable, resistance and insulation silicone tube；
The side wall of the shell is equipped with the output through-hole for supplying the output cable to wear and is worn for the input cable defeated
Enter through-hole, the output cable is electrically connected by the resistance with the secondary coil, the input cable and the primary line
Circle electrical connection, the resistance are set in the insulation silicone tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820321032.5U CN208093339U (en) | 2018-03-08 | 2018-03-08 | A kind of transformer and potential device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820321032.5U CN208093339U (en) | 2018-03-08 | 2018-03-08 | A kind of transformer and potential device |
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| Publication Number | Publication Date |
|---|---|
| CN208093339U true CN208093339U (en) | 2018-11-13 |
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ID=64062068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820321032.5U Active CN208093339U (en) | 2018-03-08 | 2018-03-08 | A kind of transformer and potential device |
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| CN (1) | CN208093339U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108172380A (en) * | 2018-03-08 | 2018-06-15 | 广州易和医疗技术开发有限公司 | A kind of transformer and potential device |
| CN109524220A (en) * | 2018-12-27 | 2019-03-26 | 阳光电源股份有限公司 | Transformer and transformer processing method |
-
2018
- 2018-03-08 CN CN201820321032.5U patent/CN208093339U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108172380A (en) * | 2018-03-08 | 2018-06-15 | 广州易和医疗技术开发有限公司 | A kind of transformer and potential device |
| CN109524220A (en) * | 2018-12-27 | 2019-03-26 | 阳光电源股份有限公司 | Transformer and transformer processing method |
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