CN217114080U - Three-dimensional wound core transformer - Google Patents
Three-dimensional wound core transformer Download PDFInfo
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- CN217114080U CN217114080U CN202122655888.0U CN202122655888U CN217114080U CN 217114080 U CN217114080 U CN 217114080U CN 202122655888 U CN202122655888 U CN 202122655888U CN 217114080 U CN217114080 U CN 217114080U
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- channel steel
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- short channel
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Abstract
The utility model discloses a three-dimensional iron core transformer of rolling up, including three-dimensional iron core transformer of rolling up, include: the winding device comprises a triangular support frame, a wound core assembly and a reinforcing coil; the triangular support frame comprises a long channel steel, a short channel steel and a pulling plate, the long channel steel and the short channel steel are sequentially spliced end to form a closed frame, and the pulling plate is welded at the edge of the lower side of the short channel steel; each wound iron core of the wound iron core assembly is arranged in a delta shape, is in a triangular structure and is fixed on the triangular support frame; the reinforcing coils are wound on the core posts of the wound iron cores respectively; the triangular support frame comprises an upper support frame and a lower support frame; the wound iron core assembly is fixed on the lower support frame; the upper support frame is fixed on the wound core assembly. The utility model discloses can make the no-load loss of product low, reach energy-conserving effect, promote transformer structural strength, make the sudden short circuit ability reinforcing of bearing of product.
Description
Technical Field
The utility model relates to a transformer technical field, in particular to three-dimensional transformer of rolling up iron core.
Background
The three-dimensional wound core transformer has the characteristics of small magnetic resistance, low no-load loss, remarkable energy-saving effect, low noise, compact structure, small volume and the like, and is widely applied. When the transformer runs and is in short circuit, the coil circulates large current in short circuit, and the coil is subjected to electromagnetic force under the action of a leakage magnetic field. According to the left-hand rule. Under the action of a transverse leakage magnetic field, the high-voltage coil and the low-voltage coil are subjected to electromagnetic tensile force in the axial direction.
The coil of the three-dimensional wound core transformer with the triangular structure is circular, but because a low-voltage coil of a common three-dimensional wound core transformer adopts a plurality of electromagnetic wires to be combined and wound in parallel, a spiral angle is formed at the end part after winding is finished, the low-voltage coil receives a larger axial force under a transverse magnetic leakage field, and if no effective treatment is available, the coil is easy to collapse axially, at the moment, because the iron core is subjected to three-dimensional splicing according to triangular arrangement after winding, the axial clamping force of the coil cannot be ensured, and the sudden short circuit bearing capacity of the three-dimensional wound core transformer is poor.
The coil of the traditional three-dimensional wound core transformer is wound conventionally, is not subjected to reinforcement treatment, and has poor axial impact resistance; secondly, the structural support piece is designed to be lightweight by carbon steel materials, and is generally welded and spliced by steel pieces, so that the strength is poor, the production process is long, the cost is high, and the environmental protection is not realized. And after the process treatment, hoisting the transformer into an oil tank, and finally assembling the transformer into the oil-immersed transformer. Most of the existing oil-immersed transformers adopt a plane laminated core structure, so that no-load loss is relatively high, and meanwhile, the short-circuit resistance is poor.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides an aim at provides a three-dimensional wound core transformer can make the no-load loss of product low, reaches energy-conserving effect, promotes transformer structural strength, makes the sudden short circuit capability reinforcing of bearing of product.
In a first aspect, an embodiment of the present invention provides a three-dimensional wound core transformer, wherein, include: the winding device comprises a triangular support frame, a wound core assembly and a reinforcing coil.
The triangular support frame comprises a long channel steel, a short channel steel and a pulling plate, the long channel steel and the short channel steel are sequentially spliced end to form a closed frame, and the pulling plate is welded at the edge of the lower side of the short channel steel.
Each wound iron core of the wound iron core assembly is arranged in a delta shape, is in a triangular structure and is fixed on the triangular support frame.
The reinforcing coils are wound on the core posts of the wound iron cores respectively.
In combination with the first aspect, embodiments of the present invention provide a first possible implementation manner of the first aspect, wherein the triangular support frame includes an upper support frame and a lower support frame.
The wound core assembly is fixed on the lower support frame.
The upper support frame is fixed on the wound core assembly.
With reference to the first aspect, an embodiment of the present invention provides a second possible implementation manner of the first aspect, where the second possible implementation manner further includes a coil fixing component.
The coil fixing assembly comprises an insulating support block.
The two insulation supporting blocks are respectively fixed between the wound iron core assembly and the upper supporting frame and between the wound iron core assembly and the lower supporting frame.
In combination with the first aspect, an embodiment of the present invention provides a third possible implementation manner of the first aspect, wherein the coil fixing component further includes a middle pull screw and a side pull screw.
The middle pull screw rod sequentially penetrates through the upper support frame, the long channel steel and the lower support frame, and two ends of the middle pull screw rod are locked through bolts.
The side-pulling screw rod sequentially penetrates through the upper support frame, the short channel steel and the lower support frame, and two ends of the side-pulling screw rod are locked through bolts.
In combination with the first aspect, an embodiment of the present invention provides a fourth possible implementation manner of the first aspect, wherein the upper support frame includes an upper long channel steel, an upper short channel steel, an upper pulling plate, and an upper reinforcing rib plate.
The upper long channel steel and the upper short channel steel are sequentially spliced end to form a closed frame.
The upper pulling plate is welded at the edge of the lower side of the upper short channel steel.
And the upper reinforcing rib plate is connected with the upper short channel steel and the upper pulling plate in a welding manner.
In combination with the first aspect, an embodiment of the present invention provides a fifth possible implementation manner of the first aspect, wherein the lower supporting frame includes a lower long channel steel, a lower short channel steel, a lower pulling plate, and a lower reinforcing rib plate.
The lower long channel steel and the lower short channel steel are sequentially spliced end to form a closed frame.
The lower pulling plate is welded at the edge of the lower side of the lower short channel steel.
And the lower reinforcing rib plate is connected with the lower short channel steel and the lower pulling plate in a welding manner.
In combination with the first aspect, an embodiment of the present invention provides a sixth possible implementation manner of the first aspect, where the lower supporting frame further includes a foot pad and a cushion block.
The foot pads are supported at the three ends of the closed frame in a three-fork shape.
The cushion block is fixed at the central intersection of the cushion feet.
In combination with the first aspect, an embodiment of the present invention provides a seventh possible implementation manner of the first aspect, where the reinforcing coil includes an epoxy bobbin, a low-voltage winding, a high-voltage winding, and an oil duct stay.
And the low-voltage winding is wound on the epoxy cylinder framework.
And the low-voltage winding are internally provided with the oil duct supporting strips.
The high-voltage winding is wound outside the low-voltage winding.
In combination with the first aspect, embodiments of the present invention provide an eighth possible implementation manner of the first aspect, wherein an outer portion of the reinforcing coil is fastened by a bundling belt in an axial direction.
The binding belt is made of polyester belts or glass fiber adhesive belts.
With reference to the first aspect, embodiments of the present invention provide a ninth possible implementation manner of the first aspect, wherein the conducting wire of the low-voltage winding includes a single or multiple electromagnetic wires wound in parallel.
And a low-voltage lead is led out from the upper end of the lead.
The low-voltage lead is pre-bent at the previous circle after being pulled out, and the bent neutral position is filled through an insulating plate.
The embodiment of the utility model provides a beneficial effect is:
the utility model adopts the three-dimensional iron core rolling structure with the optimal magnetic circuit, so that the no-load loss of the product is low, and the energy-saving effect is achieved; the utility model discloses a triangle-shaped support frame is fixed, and winding epoxy skeleton supports, and the winding end is flat around the mode, and coil axial polyester area or glass silk adhesive tape are tightened, promote transformer structural strength, make the sudden short circuit ability reinforcing of bearing of product.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic view of an assembly structure of a three-dimensional wound core transformer of the present invention;
fig. 2 is a schematic top view of the three-dimensional wound core transformer of the present invention;
fig. 3 is a schematic structural view of an upper support frame of the three-dimensional wound core transformer of the present invention;
fig. 4 is a schematic view of a top support frame of the three-dimensional wound core transformer according to the present invention;
fig. 5 is a schematic structural view of a lower support frame of the three-dimensional wound core transformer of the present invention;
fig. 6 is a schematic view of a top view structure of a lower support frame of the three-dimensional wound core transformer of the present invention;
fig. 7 is a schematic view of a reinforced coil structure of the three-dimensional wound core transformer of the present invention;
fig. 8 is a schematic view of a top view structure of a reinforcing coil of the three-dimensional wound core transformer of the present invention;
FIG. 9 is a schematic diagram of a winding structure of a low-voltage winding in the prior art;
fig. 10 is a schematic view of a winding structure of a low-voltage winding of the three-dimensional wound core transformer of the present invention.
In the figure: 1-low voltage lead; 2-a binding tape; 3-a high-voltage winding; 4-a low voltage winding; 5-epoxy cylinder skeleton; 6-oil duct stays; 8-end insulation; 9-a wire; 10-a reinforcement coil; 11-an insulating plate; 14-ladder end insulation; 20-upper support frame; 21-upper long channel steel; 22-upper short channel steel; 23-a pull-up plate; 24-upper reinforcing rib plates; 30-lower support frame; 31-lower long channel steel; 32-lower short channel steel; 33-cushion blocks; 34-lower short channel steel; 35-a lower pull plate; 40-a wound core assembly; 41-insulating support blocks; 42-middle pull screw rod; 43-side pull screw.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of the embodiments of the present invention, as generally described and illustrated in the figures herein, could be arranged and designed in a wide variety of different configurations.
Referring to fig. 1 to 8 and 10, an embodiment of the present invention provides a three-dimensional wound core transformer, including: a triangular support frame, a wound core assembly 40, and a reinforcing coil 10.
The triangular support frame comprises a long channel steel, a short channel steel and a pulling plate, the long channel steel and the short channel steel are sequentially spliced end to form a closed frame, and the pulling plate is welded at the edge of the lower side of the short channel steel.
Each wound core of the wound core assembly 40 is arranged in a delta shape, is in a triangular structure, and is fixed on the triangular support frame.
The reinforcing coils 10 are wound on the core posts of the wound iron cores respectively.
In combination with the first aspect, the present invention provides a first possible implementation manner of the first aspect, wherein the triangular support frame includes an upper support frame 20 and a lower support frame 30.
The wound core assembly 40 is fixed to the lower support frame 30.
The upper support frame 20 is fixed to the wound core assembly 40.
With reference to the first aspect, an embodiment of the present invention provides a second possible implementation manner of the first aspect, where the second possible implementation manner further includes a coil fixing component.
The coil fixing assembly includes an insulating spacer 41.
Two insulating support blocks 41 are respectively fixed between the wound core assembly 40 and the upper support frame 20, and between the wound core assembly 40 and the lower support frame 30.
With reference to the first aspect, embodiments of the present invention provide a third possible implementation manner of the first aspect, wherein the coil fixing assembly further includes a middle pull screw 42 and a side pull screw 43.
The middle pull screw rod 42 sequentially penetrates through the upper support frame 20, the long channel steel and the lower support frame 30, and two ends of the middle pull screw rod are locked through bolts.
The side pull screw 43 sequentially penetrates through the upper support frame 20, the short channel steel and the lower support frame 30, and two ends of the side pull screw are locked through bolts.
With reference to the first aspect, the present invention provides a fourth possible implementation manner of the first aspect, wherein the upper support frame 20 includes an upper long channel steel 21, an upper short channel steel 22, an upper pulling plate 23, and an upper reinforcing rib plate 24.
The upper long channel steel 21 and the upper short channel steel 22 are sequentially spliced end to form a closed frame.
The upper pulling plate 23 is welded to the edge of the lower side of the upper short channel steel 22.
The upper reinforcing rib plate 24 is welded and connected with the upper short channel steel 22 and the upper pulling plate 23.
In combination with the first aspect, the present invention provides a fifth possible implementation manner of the first aspect, wherein the lower supporting frame 30 includes a lower long channel steel 31, a lower short channel steel 34, a lower pulling plate 35, and a lower reinforcing rib plate 36.
The lower long channel steel 31 and the lower short channel steel 34 are sequentially spliced end to form a closed frame.
The lower pulling plate 35 is welded to the edge of the lower side of the lower short channel steel 34.
The lower reinforcing rib plate 36 is welded and connected with the lower short channel steel 34 and the lower pulling plate 35.
With reference to the first aspect, the present invention provides a sixth possible implementation manner of the first aspect, wherein the lower supporting frame 30 further includes a foot pad 32 and a cushion block 33.
The foot pad 32 is supported at three ends of the closed frame in a three-fork shape.
The cushion block 33 is fixed at the central intersection of the foot pads 32.
In combination with the first aspect, the present invention provides a seventh possible implementation manner of the first aspect, wherein the reinforcing coil 10 includes an epoxy bobbin 5, a low-voltage winding 4, a high-voltage winding 3, and an oil duct stay 6.
And the low-voltage winding 4 is wound on the epoxy cylinder framework 5.
The oil duct stays 6 are arranged inside and outside the low-voltage winding 4.
The high-voltage winding 3 is wound outside the low-voltage winding 4.
With reference to the first aspect, the present invention provides an eighth possible implementation manner of the first aspect, wherein an outer portion of the reinforcement coil 10 is axially fastened by a bundling belt 2.
The binding band 2 is made of polyester band or glass fiber adhesive band.
With reference to the first aspect, the present invention provides a ninth possible implementation manner of the first aspect, wherein the conducting wire 9 of the low-voltage winding 4 includes a single or multiple electromagnetic wires wound in parallel.
The upper end of the lead 9 leads out a low-voltage lead 1.
The low-voltage lead 1 is pre-bent at the previous circle after being pulled out, and the bent neutral position is filled through an insulating plate 11.
Through the pretreatment, the end part of the low-voltage winding 4 becomes flat and can be fixed by using the square end insulation 8, and the flat winding treatment of the end part can eliminate the influence of a leakage magnetic field of a spiral angle at the end part of the coil, thereby ensuring the strength and the reliability of the product.
As shown in fig. 9, in the prior art, the end of the conductive wire 9 is formed with a spiral angle, and the spiral angle is increased as the number of the wound magnetic wires is increased, and finally, the end is fixed by using a trapezoidal end insulator 14.
The embodiment of the utility model provides a aim at protecting a three-dimensional iron core transformer of rolling up possesses following effect:
1. the utility model discloses an inside epoxy section of thick bamboo skeleton that adopts of coil can bear the radial contractility when the product short circuit, promotes the operational reliability of product.
2. The utility model discloses improve the coiling mode of coil, the tip level is around eliminating the influence of helix angle magnetic leakage, promotes the bearing capacity of coil intensity and anti short circuit.
3. The utility model discloses carry out the reinforcement in polyester area to the peripheral axial of coil, axial impact force when promoting the coil and bearing the short circuit.
4. The utility model discloses a support of triangular structure is fixed, and the product bears proruption short circuit ability reinforce.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the technical solution of the present invention, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: those skilled in the art can still modify or easily conceive of changes in the technical solutions described in the foregoing embodiments or make equivalent substitutions for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A three-dimensional wound core transformer, comprising: the winding device comprises a triangular support frame, a wound core assembly (40) and a reinforcing coil (10);
the triangular support frame comprises long channel steel, short channel steel and a pulling plate, the long channel steel and the short channel steel are sequentially spliced end to form a closed frame, and the pulling plate is welded at the edge of the lower side of the short channel steel;
each wound iron core of the wound iron core assembly (40) is arranged in a delta shape, is in a triangular structure and is fixed on the triangular support frame;
the reinforcing coils (10) are wound on the core posts of the wound iron cores respectively.
2. The stereoscopic wound core transformer according to claim 1,
the triangular support frame comprises an upper support frame (20) and a lower support frame (30);
the wound iron core assembly (40) is fixed on the lower support frame (30);
the upper support frame (20) is fixed on the wound core assembly (40).
3. The stereoscopic wound core transformer of claim 2,
the coil fixing component is also included;
the coil fixing assembly comprises an insulating support block (41);
the number of the insulating support blocks (41) is two, and the two insulating support blocks are respectively fixed between the wound iron core assembly (40) and the upper support frame (20) and between the wound iron core assembly (40) and the lower support frame (30).
4. The stereoscopic wound core transformer according to claim 3,
the coil fixing component also comprises a middle pull screw rod (42) and a side pull screw rod (43);
the middle pull screw rod (42) sequentially penetrates through the upper support frame (20), the long channel steel and the lower support frame (30), and two ends of the middle pull screw rod are locked through bolts;
the side pull screw rod (43) sequentially penetrates through the upper support frame (20), the short channel steel and the lower support frame (30), and two ends of the side pull screw rod are locked through bolts.
5. The stereoscopic wound core transformer according to claim 2,
the upper support frame (20) comprises an upper long channel steel (21), an upper short channel steel (22), an upper pulling plate (23) and an upper reinforcing rib plate (24);
the upper long channel steel (21) and the upper short channel steel (22) are sequentially spliced end to form a closed frame;
the upper pulling plate (23) is welded at the edge of the lower side of the upper short channel steel (22);
the upper reinforcing rib plate (24) is connected with the upper short channel steel (22) and the upper pulling plate (23) in a welding mode.
6. The stereoscopic wound core transformer according to claim 2,
the lower support frame (30) comprises a lower long channel steel (31), a lower short channel steel (34), a lower pull plate (35) and a lower reinforcing rib plate (36);
the lower long channel steel (31) and the lower short channel steel (34) are sequentially spliced end to form a closed frame;
the lower pulling plate (35) is welded at the edge of the lower side of the lower short channel steel (34);
and the lower reinforcing rib plate (36) is welded and connected with the lower short channel steel (34) and the lower pulling plate (35).
7. The stereoscopic wound core transformer according to claim 6,
the lower support frame (30) also comprises a foot pad (32) and a cushion block (33);
the foot pads (32) are supported at three ends of the closed frame in a trifurcate manner;
the cushion block (33) is fixed at the center intersection of the cushion feet (32).
8. The stereoscopic wound core transformer according to claim 1,
the reinforcing coil (10) comprises an epoxy cylinder framework (5), a low-voltage winding (4), a high-voltage winding (3) and an oil duct stay (6);
the low-voltage winding (4) is wound on the epoxy cylinder framework (5);
the low-voltage winding (4) and the low-voltage winding are internally and externally provided with the oil duct stay (6);
the high-voltage winding (3) is wound outside the low-voltage winding (4).
9. The stereoscopic wound core transformer according to claim 8,
the outer part of the reinforcing coil (10) is tightened by a bundling belt (2) in the axial direction;
the binding belt (2) is made of polyester belts or glass fiber adhesive belts.
10. The stereoscopic wound core transformer according to claim 8,
the conducting wire (9) of the low-voltage winding (4) comprises a single or a plurality of electromagnetic wires which are wound in parallel;
a low-voltage lead (1) is led out from the upper end part of the lead (9);
the low-voltage lead (1) is pre-bent at the previous circle after being pulled out, and the bent neutral position is filled through an insulating plate (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122655888.0U CN217114080U (en) | 2021-11-02 | 2021-11-02 | Three-dimensional wound core transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122655888.0U CN217114080U (en) | 2021-11-02 | 2021-11-02 | Three-dimensional wound core transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217114080U true CN217114080U (en) | 2022-08-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122655888.0U Active CN217114080U (en) | 2021-11-02 | 2021-11-02 | Three-dimensional wound core transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217114080U (en) |
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2021
- 2021-11-02 CN CN202122655888.0U patent/CN217114080U/en active Active
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