CN218849236U - Transformer low-voltage winding lead wire outlet structure and transformer - Google Patents
Transformer low-voltage winding lead wire outlet structure and transformer Download PDFInfo
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- CN218849236U CN218849236U CN202223147803.9U CN202223147803U CN218849236U CN 218849236 U CN218849236 U CN 218849236U CN 202223147803 U CN202223147803 U CN 202223147803U CN 218849236 U CN218849236 U CN 218849236U
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Abstract
The utility model provides a transformer low voltage winding lead wire outlet structure and transformer belongs to transformer technical field. The transformer low-voltage winding lead wire outlet structure comprises an iron core, an upper clamping piece and a low-voltage winding, wherein the low-voltage winding is provided with an inner outgoing wire conducting bar and an outer outgoing wire conducting bar, the upper clamping piece is an insulating clamping piece, the inner outgoing wire conducting bar and the outer outgoing wire conducting bar are both led out from between the insulating clamping piece and an upper yoke of the iron core, and a groove for the inner outgoing wire conducting bar to pass through is formed in the inner side surface of the insulating clamping piece. The utility model discloses make the structure of insulating folder obtain simplifying, make things convenient for manufacturing, need not to set up the locating part in the insulating folder outside simultaneously, reducible spare part quantity, convenient manufacturing and assembly. In addition, the two conducting bars are led out from the inner side of the insulating clamp, so that on one hand, the distance between the conducting bars and the wall of the oil tank can be increased, and the eddy current loss of the oil tank is avoided; on the other hand, the wiring space on two sides is saved, the oil tank can be further reduced, the using amount of transformer oil is reduced, and the production cost is reduced.
Description
Technical Field
The utility model relates to a transformer low voltage winding lead wire outlet structure and transformer belongs to transformer technical field.
Background
Compared with the original and old national standard performance transformer, the new energy efficiency 10kV distribution transformer greatly reduces the operation loss of equipment. When the capacity of the transformer is the same as the structure, the loss requirement is greatly reduced, so that the eddy current loss of equipment is increased, and in order to enable the transformer to meet the energy efficiency requirement, the reduction of the eddy current loss of a product becomes a technical breakthrough point. The eddy current loss of the equipment is mainly generated when a low-voltage winding passes through large current, and conductors close to the low-voltage winding, such as an iron core clamping piece, an oil tank and the like, can generate induced current, so that energy loss is generated.
Fig. 1 shows a schematic structural diagram of an oil-immersed transformer in the prior art, which includes an oil tank 1, an iron core 2, an upper clamping piece 3, a lower clamping piece 4 and a foil winding 5, wherein the foil winding 5 includes a high-voltage winding and a low-voltage winding, a lead-out structure of the low-voltage winding includes an inner lead-out copper bar 6 and an outer lead-out copper bar 7, the inner lead-out copper bar 6 and the outer lead-out copper bar 7 pass through a space between the upper clamping piece 3 and the wall of the oil tank after being bent at the upper end of the winding, and since the upper clamping piece 3 and the oil tank 1 are made of metal materials and the inner lead-out copper bar 6 and the outer lead-out copper bar 7 are relatively close to each other, during operation, when a large current passes through the copper bars, the upper clamping piece 3 and the oil tank 1 generate a large eddy current loss, resulting in local overheating.
To this end, chinese patent application with application publication No. CN113963908A discloses an oil-immersed transformer using a non-metallic clamping member, which includes an iron core, a coil, an oil tank, and a clamping member assembly, wherein the clamping member assembly is disposed at two sides of upper and lower iron yokes of the iron core, the clamping member assembly is made of a non-metallic material, a low-voltage inner copper bar lead of the coil is vertically led out from an inner side of the low-voltage upper clamping member, a low-voltage outer copper bar lead is vertically led out from an outer side of the low-voltage upper clamping member, and grooves for leading out the low-voltage inner copper bar lead and the low-voltage outer copper bar lead are respectively disposed at the inner side and the outer side of the low-voltage upper clamping member.
The oil-immersed transformer adopts the clamping piece made of the non-metallic material to clamp the iron core, so that the stray loss of the magnetic field of the iron core in the clamping piece made of the metallic material is avoided, and the performance of the transformer is improved. But because one of copper bar lead wire (being interior the line of outgoing promptly leads to electrical drainage) and low pressure outer copper bar lead wire (being the line of outgoing leads to electrical drainage) draws forth from the inboard of holder on the low pressure in the low pressure, and the other draws forth from the outside of holder on the low pressure, requires that the recess all need be seted up to the inside and outside both sides of holder on the low pressure to the outside still need dispose horizontal piece (being the locating part) to carry out spacingly to the outer copper bar lead wire of low pressure, cause the structure very complicated, spare part quantity is more, it is troublesome to make the assembly. In addition, because the low-voltage outer copper bar lead is still relatively close to the wall of the oil tank, the oil tank still can generate eddy current loss, and the problem is not solved fundamentally.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a transformer low-voltage winding lead wire outlet structure, which aims to solve the problems that in the prior art, an inner lead wire conductive row and an outer lead wire conductive row are respectively led out from the inner side and the outer side of an upper clamping piece, so that the outer side of the upper clamping piece is required to be provided with a limiting part, further more parts are required, and the manufacturing and assembling are troublesome, and simultaneously, the problem that the outer lead wire conductive row is closer to the wall of an oil tank, so that the eddy current loss of the oil tank is caused is also solved; an object of the utility model is also to provide a transformer to solve above-mentioned problem.
In order to achieve the above object, the utility model provides a transformer low voltage winding lead-out structure adopts following technical scheme:
the transformer low-voltage winding lead wire outlet structure comprises an iron core, an upper clamping piece and a low-voltage winding, wherein the upper clamping piece is clamped outside an upper yoke of the iron core, the low-voltage winding is wound outside a core column of the iron core, the low-voltage winding is provided with an inner outgoing wire conducting bar and an outer outgoing wire conducting bar which are led out upwards, the upper clamping piece is an insulating clamping piece, the inner outgoing wire conducting bar and the outer outgoing wire conducting bar are both led out from the insulating clamping piece and the upper yoke of the iron core, and a groove for the inner outgoing wire conducting bar and the outer outgoing wire conducting bar to penetrate through is formed in the inner side surface of the insulating clamping piece.
The beneficial effects of the above technical scheme are that: the utility model discloses improve current outlet structure for interior outlet wire leads out conductive row and goes out the wire and leads out conductive row and all draw forth from between the upper yoke of insulating folder and iron core, is provided with the recess that supplies interior outlet wire to lead out conductive row and go out the wire to lead out the conductive row and pass on the medial surface of insulating folder, does not need to set up the locating part in the upper folder outside on the one hand like this, can reduce spare part quantity, convenient manufacturing and assembly; on the other hand, the outgoing line conducting bar is more close to the inside, the distance between the outgoing line conducting bar and the wall of the oil tank can be increased, and the oil tank is prevented from generating eddy loss.
Furthermore, the inner outgoing line conducting bar and the outer outgoing line conducting bar penetrate through the same groove, and an insulating spacer is arranged between the inner outgoing line conducting bar and the outer outgoing line conducting bar.
The beneficial effects of the above technical scheme are that: the inner wire conducting bar and the outer wire conducting bar penetrate through the same groove, the structure is simplified, the processing and the manufacturing are convenient, and meanwhile, an insulating spacer is arranged between the inner wire conducting bar and the outer wire conducting bar, so that the insulating requirement between the inner wire conducting bar and the outer wire conducting bar is ensured.
Furthermore, the outgoing line conductive bar is provided with an outer bending section which is bent towards the direction far away from the inner outgoing line conductive bar through the penetrating end of the insulating clamp.
The beneficial effects of the above technical scheme are that: because the internal and external wire conducting bars pass through the same groove and the distance between the internal and external wire conducting bars and the groove is relatively short in the insulating clamp, the penetrating end of the external wire conducting bar penetrating out of the insulating clamp is provided with an external bending section bent towards the direction far away from the internal wire conducting bar, the external bending section can be utilized to be conveniently connected with other devices, and enough operation space is reserved.
Furthermore, the outer bending section and the outer wire conducting bar are in an L shape.
The beneficial effects of the above technical scheme are that: simple structure, convenient bending and connection operation.
Furthermore, an inner bending section bent towards the direction far away from the outer outgoing line conducting bar is arranged at the penetrating end of the inner outgoing line conducting bar penetrating out of the insulating clamp.
The beneficial effects of the above technical scheme are that: because the internal and external wire conductive bars pass through the same groove and the distance between the internal and external wire conductive bars and the groove is relatively short in the insulating clamp, the penetrating end of the internal wire conductive bar penetrating out of the insulating clamp is provided with an internal bending section bent towards the direction away from the external wire conductive bar, the internal bending section can be utilized to be conveniently connected with other devices, and enough operation space is reserved.
Furthermore, the inner bending section and the inner outgoing line conducting bar are Z-shaped.
The beneficial effects of the above technical scheme are that: simple structure, convenient bending and connection operation.
Furthermore, the part of the inner outgoing line conducting bar below the insulating clamp is vertical.
The beneficial effects of the above technical scheme are that: the structure is simple, and the conductive bar of the inner outgoing line can directly penetrate through the insulating clamp conveniently.
Furthermore, the outgoing line conducting bar comprises a first outgoing line section and a second outgoing line section, wherein the first outgoing line section is located at the position of the low-voltage winding, the second outgoing line section penetrates through the insulating clamp, the first outgoing line section and the second outgoing line section are parallel and vertical, and an inclined transition section is arranged between the first outgoing line section and the second outgoing line section.
The beneficial effects of the above technical scheme are that: the outer outgoing line conducting bar enables the second outgoing line section to be closer to the iron core upper yoke through the inclined transition section arranged between the first outgoing line section and the second outgoing line section, and the second outgoing line section can conveniently penetrate through the groove of the insulating clamp.
Furthermore, the upper clamping piece comprises a low-voltage side upper clamping piece and a high-voltage side upper clamping piece, and the low-voltage side upper clamping piece is the insulating clamping piece; the transformer low-voltage winding lead wire outlet structure further comprises a lower clamping piece clamped outside a lower yoke of the iron core, the lower clamping piece comprises a low-voltage side lower clamping piece and a high-voltage side lower clamping piece, and the low-voltage side lower clamping piece, the high-voltage side lower clamping piece and the high-voltage side upper clamping piece are metal clamping pieces.
The beneficial effects of the above technical scheme are that: only the upper clamping piece on the low-voltage side of one side of the conducting bar with the inner outgoing line and the lower-voltage side of one side of the conducting bar with the outer outgoing line are set to be insulating clamping pieces, all the clamping pieces at other positions are metal clamping pieces, so that the insulating clamping pieces are adopted to avoid eddy current loss, the structural strength of other clamping pieces is guaranteed, and the clamping effect is guaranteed.
In order to achieve the above object, the present invention provides a transformer which adopts the following technical solution:
the transformer comprises an oil tank and a low-voltage winding lead-out structure arranged in the oil tank, wherein the low-voltage winding lead-out structure comprises an iron core, an upper clamping piece and a low-voltage winding, the upper clamping piece is clamped outside an upper yoke of the iron core, the low-voltage winding is wound outside a core column of the iron core, the low-voltage winding is provided with an inner lead-out conducting row and an outer lead-out conducting row which are led out upwards, the upper clamping piece is an insulating clamping piece, the inner lead-out conducting row and the outer lead-out conducting row are both led out from the insulating clamping piece and the upper yoke of the iron core, and a groove for the inner lead-out conducting row and the outer lead-out conducting row to pass through is formed in the inner side surface of the insulating clamping piece.
The beneficial effects of the above technical scheme are that: the utility model discloses improved the outlet structure of current transformer, made interior outlet wire lead electrical drainage and go out the wire lead electrical drainage and all draw forth from between the upper yoke of insulating clamp spare and iron core, be provided with the recess that supplies interior outlet wire to lead electrical drainage and go out the wire to lead electrical drainage and pass on the medial surface of insulating clamp spare, need not set up the locating part outside the upper clamp spare on the one hand like this, can reduce spare part quantity, convenient manufacturing and assembly; on the other hand, the outgoing line conducting bar is more close to the inside, the distance between the outgoing line conducting bar and the wall of the oil tank can be increased, and the oil tank is prevented from generating eddy loss.
Furthermore, the inner outgoing line conducting bar and the outer outgoing line conducting bar penetrate through the same groove, and an insulating spacer is arranged between the inner outgoing line conducting bar and the outer outgoing line conducting bar.
The beneficial effects of the above technical scheme are that: the inner wire conducting bar and the outer wire conducting bar penetrate through the same groove, the structure is simplified, the processing and the manufacturing are convenient, and meanwhile, an insulating spacer is arranged between the inner wire conducting bar and the outer wire conducting bar, so that the insulating requirement between the inner wire conducting bar and the outer wire conducting bar is ensured.
Furthermore, the outgoing line conductive bar is provided with an outer bending section which is bent towards the direction far away from the inner outgoing line conductive bar through the penetrating end of the insulating clamp.
The beneficial effects of the above technical scheme are that: because the internal and external wire conducting bars pass through the same groove and the distance between the internal and external wire conducting bars and the groove is relatively short in the insulating clamp, the penetrating end of the external wire conducting bar penetrating out of the insulating clamp is provided with an external bending section bent towards the direction far away from the internal wire conducting bar, the external bending section can be utilized to be conveniently connected with other devices, and enough operation space is reserved.
Furthermore, the outer bending section and the outer wire conducting bar are in an L shape.
The beneficial effects of the above technical scheme are that: simple structure, convenient bending and connection operation.
Furthermore, the penetrating end of the inner outgoing line conducting bar penetrating through the insulating clamp is provided with an inner bending section bending towards the direction far away from the outer outgoing line conducting bar.
The beneficial effects of the above technical scheme are that: because the internal and external wire conductive bars pass through the same groove and the distance between the internal and external wire conductive bars and the groove is relatively short in the insulating clamp, the penetrating end of the internal wire conductive bar penetrating out of the insulating clamp is provided with an internal bending section bent towards the direction away from the external wire conductive bar, the internal bending section can be utilized to be conveniently connected with other devices, and enough operation space is reserved.
Furthermore, the inner bending section and the inner outgoing line conducting bar are Z-shaped.
The beneficial effects of the above technical scheme are that: simple structure, convenient bending and connection operation.
Further, the part of the inner outgoing line conducting bar below the insulating clamp is vertical.
The beneficial effects of the above technical scheme are that: the structure is simple, and the conductive bar of the inner outgoing line can directly penetrate through the insulating clamp conveniently.
Furthermore, the outgoing line conducting bar comprises a first outgoing line section and a second outgoing line section, wherein the first outgoing line section is located at the position of the low-voltage winding, the second outgoing line section penetrates through the insulating clamp, the first outgoing line section and the second outgoing line section are parallel and vertical, and an inclined transition section is arranged between the first outgoing line section and the second outgoing line section.
The beneficial effects of the above technical scheme are that: the outer outgoing line conducting bar enables the second outgoing line section to be closer to the iron core upper yoke through the inclined transition section arranged between the first outgoing line section and the second outgoing line section, and the second outgoing line section can conveniently penetrate through the groove of the insulating clamp.
Furthermore, the upper clamping piece comprises a low-voltage side upper clamping piece and a high-voltage side upper clamping piece, and the low-voltage side upper clamping piece is the insulating clamping piece; the low-voltage winding lead wire outlet structure further comprises a lower clamping piece clamped outside a lower yoke of the iron core, the lower clamping piece comprises a low-voltage side lower clamping piece and a high-voltage side lower clamping piece, and the low-voltage side lower clamping piece, the high-voltage side lower clamping piece and the high-voltage side upper clamping piece are all metal clamping pieces.
The beneficial effects of the above technical scheme are that: only the clamping pieces on the low-voltage side, which are provided with the inner outgoing line conducting bar and the outer outgoing line conducting bar, are arranged as insulating clamping pieces, and all the clamping pieces at other positions are metal clamping pieces, so that the insulating clamping pieces are adopted to avoid eddy current loss, the structural strength of other clamping pieces is guaranteed, and the clamping effect is guaranteed.
Drawings
Fig. 1 is a schematic structural diagram of an oil-immersed transformer in the prior art;
fig. 2 is a schematic structural diagram of the transformer of the present invention.
In fig. 1: 1. an oil tank; 2. an iron core; 3. an upper clamp; 4. a lower clamp; 5. a foil winding; 6. an inner outgoing line copper bar; 7. copper bars for outgoing lines;
in fig. 2: 10. an oil tank; 21. an upper yoke; 22. a lower yoke; 31. an insulating clamp; 32. a high-voltage side upper clamp; 33. a low-voltage side lower clamp; 34. a high-voltage side lower clamp; 40. an inner outgoing line conducting bar; 41. a vertical section; 42. an inner bending section; 50. an outgoing line conducting bar; 51. a first wire outlet section; 52. a second outlet section; 53. a sloped transition section; 54. an outer bending section.
Detailed Description
The utility model discloses outlet structure to current transformer has improved, makes interior outlet wire lead electrical drainage and go out the wire and lead electrical drainage and all draw forth between the yoke of insulating folder and iron core, simplifies the structure on the one hand, and the distance between on the other hand increase and the oil tank wall avoids the oil tank to produce the eddy current loss.
The features and properties of the present invention are described in further detail below with reference to examples.
Embodiment 1 of the transformer of the utility model:
as shown in fig. 2, the transformer includes an oil tank 10 and a low-voltage winding lead-out structure (hereinafter referred to as a lead-out structure) disposed in the oil tank 10, the lead-out structure includes an iron core, an upper clamp clamped outside an upper yoke 21 of the iron core, a lower clamp clamped outside a lower yoke 22 of the iron core, and a low-voltage winding wound outside a core column of the iron core, the low-voltage winding is a foil winding, the low-voltage winding has an inner lead-out conductive row 40 and an outer lead-out conductive row 50 led out upward, and both the two conductive rows are copper bars.
The upper clamping piece comprises a low-voltage side upper clamping piece and a high-voltage side upper clamping piece 32, the low-voltage side upper clamping piece is an insulating clamping piece 31 made of laminated wood, epoxy resin and the like, eddy current loss of the low-voltage side upper clamping piece is avoided, and local overheating is reduced. The lower clamping piece comprises a low-voltage side lower clamping piece 33 and a high-voltage side lower clamping piece 34, the low-voltage side lower clamping piece 33, the high-voltage side lower clamping piece 34 and the high-voltage side upper clamping piece 32 are all metal clamping pieces, the structural strength of the clamping pieces is guaranteed, and the clamping effect can be guaranteed.
The inner outgoing line conductive bar 40 and the outer outgoing line conductive bar 50 are both led out from between the insulating clamp 31 and the upper yoke 21 of the iron core, grooves for the inner outgoing line conductive bar 40 and the outer outgoing line conductive bar 50 to pass through are formed in the inner side face of the insulating clamp 31, and the inner outgoing line conductive bar 40 and the outer outgoing line conductive bar 50 pass through the same groove, so that too many grooves do not need to be formed in the insulating clamp 31, the structure of the insulating clamp 31 is simplified, and the processing and the manufacturing are convenient. Meanwhile, compared with the prior art, a limiting part does not need to be arranged on the outer side of the insulating clamp 31, the number of parts can be reduced, and the manufacturing and assembly are convenient. In addition, the two conducting bars are led out from the inner side of the insulating clamp 31, so that on one hand, the distance between the conducting bars and the wall of the oil tank can be increased, the eddy current loss of the oil tank is avoided, and the phenomenon of local overheating is reduced; on the other hand, the wiring space on two sides is saved, the oil tank can be further reduced, the using amount of transformer oil is reduced, and the production cost of enterprises is reduced.
Because the inner outgoing line conductive bar 40 and the outer outgoing line conductive bar 50 pass through the same groove, an insulating spacer is arranged between the two conductive bars, so that the insulating requirement between the two conductive bars is ensured. As shown in fig. 2, the portion of the inner conductor bar 40 below the insulating clamp 31 is vertical, and is a vertical segment 41. The outer outgoing line conducting bar 50 comprises a first outgoing line section 51 at a low-voltage winding position and a second outgoing line section 52 penetrating through the insulation clamp 31, the first outgoing line section 51 and the second outgoing line section 52 are parallel and vertical, and an inclined transition section 53 is arranged between the first outgoing line section 51 and the second outgoing line section 52, so that the second outgoing line section 52 is closer to the upper yoke 21 of the iron core, and the second outgoing line section 52 can conveniently penetrate through a groove of the insulation clamp 31.
Meanwhile, the penetrating end of the outgoing line conducting bar 50 penetrating through the insulating clamp 31 is provided with an outer bending section 54 bending towards the direction away from the inner outgoing line conducting bar 40, and the penetrating end of the inner outgoing line conducting bar 40 penetrating through the insulating clamp 31 is provided with an inner bending section 42 bending towards the direction away from the outgoing line conducting bar 50. As shown in fig. 2, the outer bending section 54 and the second wire outlet section 52 are L-shaped, and the inner bending section 42 and the vertical section 41 are Z-shaped, so that the structure is simple, and the bending and connecting operations are convenient.
In other embodiments of the transformer: the present embodiment provides different materials for the clip, and unlike embodiment 1, the low voltage side upper clip, the low voltage side lower clip, the high voltage side lower clip and the high voltage side upper clip are all insulating clips.
In other embodiments of the transformer: the embodiment provides different structures of the outgoing line conductive bar, and is different from embodiment 1 in that the part of the outgoing line conductive bar below the insulating clamp is also vertical, and at this time, a deeper groove needs to be formed on the insulating clamp, so that the incoming line conductive bar and the outgoing line conductive bar can pass through the groove at the same time.
In other embodiments of the transformer: the present embodiment provides a different structure of the inner outgoing conductive bar, and unlike embodiment 1, the portion of the inner outgoing conductive bar below the insulating clip is not vertical, but is bent.
In other embodiments of the transformer: the present embodiment provides different shapes of the inner bending section and the inner outgoing line conductive bar, and different from embodiment 1, the inner bending section and the inner outgoing line conductive bar are L-shaped.
In other embodiments of the transformer: the present embodiment provides different structures of the inner outgoing conductive bar, and is different from embodiment 1 in that the inner outgoing conductive bar is not bent but vertically disposed through the penetrating end of the insulating clip.
In other embodiments of the transformer: the present embodiment provides different shapes of the outer bending section and the conducting bar of the outgoing line, and different from embodiment 1, the outer bending section and the conducting bar of the outgoing line are Z-shaped.
In other embodiments of the transformer: the present embodiment provides different structures of the outgoing line conductive bar, and unlike embodiment 1, the outgoing line conductive bar is not bent but vertically disposed at the penetrating end of the insulating clip.
In other embodiments of the transformer: different from embodiment 1, the present embodiment provides different arrangement of the grooves, and the present embodiment has two grooves for the inner outgoing line conductive bar and the outer outgoing line conductive bar to pass through, so that the insulating spacer can be omitted.
In other embodiments of the transformer: the present embodiment provides different materials for the inner outgoing line conducting bar and the outer outgoing line conducting bar, and is different from embodiment 1 in that the inner outgoing line conducting bar and the outer outgoing line conducting bar are both aluminum bars.
The utility model discloses the embodiment of the lead wire outlet structure of the low-voltage winding of the transformer is: the specific structure of the lead-out structure of the low-voltage winding of the transformer is the same as that of the lead-out structure of the low-voltage winding in the transformer embodiment, and is not repeated here.
The above description is only for the preferred embodiment of the present invention, and the present invention is not limited thereto, the protection scope of the present invention is defined by the claims, and all structural changes equivalent to the contents of the description and drawings of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The transformer low-voltage winding lead wire outlet structure comprises an iron core, an upper clamping piece and a low-voltage winding, wherein the upper clamping piece is clamped outside an upper yoke (21) of the iron core, the low-voltage winding is wound outside a core column of the iron core, the low-voltage winding is provided with an inner outgoing wire conducting bar (40) and an outer outgoing wire conducting bar (50) which are led out upwards, the upper clamping piece is an insulating clamping piece (31), the transformer low-voltage winding lead wire outlet structure is characterized in that the inner outgoing wire conducting bar (40) and the outer outgoing wire conducting bar (50) are both led out from the insulating clamping piece (31) and the upper yoke (21) of the iron core, and a groove for the inner outgoing wire conducting bar (40) and the outer outgoing wire conducting bar (50) to penetrate through is formed in the inner side face of the insulating clamping piece (31).
2. The transformer low-voltage winding lead wire outlet structure according to claim 1, wherein the inner outlet conductor bar (40) and the outer outlet conductor bar (50) pass through the same groove, and an insulating spacer is arranged between the inner outlet conductor bar (40) and the outer outlet conductor bar (50).
3. The transformer low-voltage winding lead-out structure according to claim 2, wherein the end of the outer outgoing lead conductor bar (50) penetrating out of the insulation clamp (31) is provided with an outer bent section (54) bent away from the inner outgoing lead conductor bar (40).
4. The transformer low voltage winding lead-out structure according to claim 3, wherein the outer bent section (54) and the outer lead conductive bar (50) are L-shaped.
5. The transformer low-voltage winding lead-out structure according to any one of claims 2 to 4, wherein the penetrating end of the inner lead conducting bar (40) penetrating out of the insulating clamp (31) is provided with an inner bending section (42) bending towards a direction away from the outer lead conducting bar (50).
6. The transformer low-voltage winding lead-out structure according to claim 5, wherein the inner bent segment (42) and the inner lead conductive bar (40) are Z-shaped.
7. The transformer low-voltage winding lead-out structure according to any one of claims 1 to 4, wherein the portion of the inner lead conductive bar (40) below the insulating clamp (31) is vertical.
8. The transformer low-voltage winding lead-out structure according to any one of claims 1 to 4, characterized in that the outgoing lead conductive bar (50) comprises a first outgoing line section (51) at the position of the low-voltage winding and a second outgoing line section (52) passing through the insulating clamp (31), the first outgoing line section (51) and the second outgoing line section (52) are parallel and vertical, and an inclined transition section (53) is arranged between the first outgoing line section (51) and the second outgoing line section (52).
9. The transformer low-voltage winding lead-out structure according to any one of claims 1 to 4, wherein the upper clamping piece comprises a low-voltage side upper clamping piece and a high-voltage side upper clamping piece (32), and the low-voltage side upper clamping piece is the insulating clamping piece (31); the transformer low-voltage winding lead wire outlet structure further comprises a lower clamping piece clamped outside a lower yoke (22) of the iron core, the lower clamping piece comprises a low-voltage side lower clamping piece (33) and a high-voltage side lower clamping piece (34), and the low-voltage side lower clamping piece (33), the high-voltage side lower clamping piece (34) and the high-voltage side upper clamping piece (32) are all metal clamping pieces.
10. A transformer, comprising an oil tank (10) and a low-voltage winding lead outlet structure arranged in the oil tank (10), wherein the low-voltage winding lead outlet structure is the same as the transformer low-voltage winding lead outlet structure of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223147803.9U CN218849236U (en) | 2022-11-27 | 2022-11-27 | Transformer low-voltage winding lead wire outlet structure and transformer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223147803.9U CN218849236U (en) | 2022-11-27 | 2022-11-27 | Transformer low-voltage winding lead wire outlet structure and transformer |
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| Publication Number | Publication Date |
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| CN218849236U true CN218849236U (en) | 2023-04-11 |
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| CN202223147803.9U Active CN218849236U (en) | 2022-11-27 | 2022-11-27 | Transformer low-voltage winding lead wire outlet structure and transformer |
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| Country | Link |
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| CN (1) | CN218849236U (en) |
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