CN210743784U - Transformer coil forming die - Google Patents
Transformer coil forming die Download PDFInfo
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- CN210743784U CN210743784U CN201922036700.7U CN201922036700U CN210743784U CN 210743784 U CN210743784 U CN 210743784U CN 201922036700 U CN201922036700 U CN 201922036700U CN 210743784 U CN210743784 U CN 210743784U
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Abstract
The utility model discloses a transformer coil forming die solves prior art coil and can cause coil insulation and wire winding to damage the problem that influences product quality because of the atress inequality in the plastic process. The utility model comprises a base, a guide mechanism and an upper pressure plate matched with the base through the guide mechanism; the guide mechanism comprises two stand columns fixed on the base, two through holes matched with the stand columns are formed in the upper pressure plate, and the two stand columns penetrate through the two through holes. The utility model has the advantage of scientific and reasonable design, be applicable to the transformer coil of large capacity oil-immersed long circular structure, be particularly useful for metallic glass transformer coil's plastic use, make the coil atress even to coil plastic in-process, avoid the atress inequality to cause coil insulation and wire winding to damage to guarantee the coil quality. The coil shaping device can shape a plurality of coils at one time, and can be placed in a drying tank together with a mould for drying, so that the insulation between the coil layers is solidified, and the coil cannot rebound after the forming mould is removed.
Description
Technical Field
The utility model relates to a transformer coil shaping field, concretely relates to transformer coil forming die.
Background
The transformer coil is a coil, and the transformer needs a coil to operate. The method can be divided into the following steps according to the number of phases: (1) single-phase transformer: the method is used for single-phase loads and three-phase transformer banks. (2) Three-phase transformer: the voltage raising and reducing device is used for raising and reducing voltage of a three-phase system. According to the volume: the coil of the small transformer is generally made of a round copper wire with insulation, and the coil of the large transformer is made of a flat copper wire with insulation.
Coils are generally classified into layer type and pancake type. The coil is formed by continuously winding the turns of the coil in layers in the axial direction, and is called a layer coil. Each layer is cylindrical, so that the coil has better mechanical strength, is not easy to deform and is convenient to wind. The coil composed of two layers is called double-layer cylinder type; the multilayer cylinder is composed of multiple layers.
After the turns of the coil are continuously wound in the radial direction into a coil cake (wire segment), the coil formed by arranging a plurality of coil cakes in the axial direction is called a cake-type coil. Such as continuous and intertwined coils, are the coil types. In addition to the above two coil forms, the coil interposed between the layer type and the pancake type includes a pancake type coil and a foil type coil, and the like.
The common winding characteristics and application range of the coil are mainly as follows:
(1) cylindrical coil
The cylinder type coil includes a low pressure cylinder type and a high pressure cylinder type. The low-voltage cylindrical coil is used on a low-voltage winding with the three-phase capacity of below 630kV & A and the voltage of lkV and below; the high-voltage cylindrical coil is used in a high-voltage winding with a three-phase capacity of 2500kV & A or below and a voltage class of 3-35 kV.
The coil of the low-voltage winding is formed by winding one or more flat wires in parallel. Since the more parallel wires, the less turns per layer, the poorer the fill factor of the coil, and therefore, the more the coil can be used in the transformer above 630kV · a, the foil coil can be used to improve the fill factor. The coil of the high-voltage winding is wound by a round wire or a flat wire, and when a segmented cylindrical coil is adopted, the high-voltage winding can be applied to a transformer with the capacity of 2000kV & A and below and the voltage class of 63kV and below.
The cylindrical coil is simple to wind, good in manufacturability, high in heat dissipation efficiency of the interlayer oil duct, poor in mechanical strength and generally not capable of being wound into a single layer.
(2) Spiral coil
The spiral coil is used for a low-voltage and high-current transformer winding with the three-phase capacity of more than 800kV & A and the voltage of 35kV or less. The coil of the winding is formed by winding a plurality of flat wires in parallel in a spiral shape. It has single helix, double helix, four helix, etc. Because the radial positions of the parallel wires are different and the lengths of the parallel wires are different, the wires need to be transposed in the winding process.
The spiral coil has the characteristics of simple winding process, good coil turn-to-turn heat dissipation and troublesome transposition.
(3) Continuous coil
The continuous coil is widely used because of its high mechanical strength and good heat dissipation. The method is generally applied to a winding with the capacity of 800 and above and the voltage level of 35-110 kV. The high voltage and the low voltage of the coil can be adopted.
The continuous coil is formed by continuously winding one or more flat wires into a plurality of pie-shaped wire segments (30-100 wire segments) on a winding die supporting strip. The number of segments can be even (for end outgoing lines) or a multiple of 4 (middle outgoing lines). The number of parallel winding is generally less than 4, and in special cases is not more than 8. The connection between the wire segments (or called wire cakes) has no welding head, and is arranged according to the winding sequence of the wires in a natural sequence, and the connection between the wire segments is alternatively transited at the inner side and the outer side of the coil. When the coil is wound by two or more coils, the wire is transposed.
Because the existing transformer coil adopts the long circular structure, the linear part of the transformer coil can not meet the drawing size requirement in the winding and forming process of the transformer coil, and particularly, the size of the linear part is difficult to ensure because the adopted winding wire has larger specification. The traditional method for solving the problem generally adopts a wooden cushion block to be cushioned on the straight line part of the coil, and then the wooden stick is used for directly knocking, and the mode is characterized in that the coil is locally stressed during knocking, so that the coil is easily insulated and wound due to uneven stress, and the product quality is influenced.
Therefore, design a transformer coil forming die, be applicable to the transformer coil of large capacity oil-immersed long circular structure, be particularly useful for the plastic of metallic glass transformer coil and use, make the coil atress even in to the coil plastic process, avoid the atress inequality to cause coil insulation and wire winding to damage to guarantee the coil quality, become the technical problem that technical staff of the technical field await solution urgently.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: the utility model provides a transformer coil forming die, be applicable to the transformer coil of large capacity oil-immersed long circular structure, be particularly useful for the plastic use of metallic glass transformer coil, make the coil atress even in to the coil plastic process, avoid the atress inequality to cause coil insulation and wire winding damage to guarantee the coil quality.
In order to achieve the above object, the utility model adopts the following technical scheme:
a transformer coil forming die comprises a base, a guide mechanism and an upper pressing plate matched with the base through the guide mechanism; the guide mechanism comprises two stand columns fixed on the base, the upper pressing plate is provided with two through holes respectively matched with the stand columns, and the two stand columns penetrate through the two through holes.
Further, the upper portion of stand is equipped with the screw thread, the upper portion threaded connection of stand has the nut, and the nut is located the top board top.
Further, the top surface of the base is rectangular, and the top surface of the base is horizontally distributed.
Furthermore, the bottom surface of the upper pressure plate is rectangular, and the bottom surface of the upper pressure plate is horizontally distributed.
Further, the top surface of the base is the same as the bottom surface of the upper pressure plate in size.
Furthermore, the top surface of the upper pressure plate is provided with a lifting hole, and the upper pressure plate is connected with a lifting device through the lifting hole.
Furthermore, the number of the hanging holes is four, and the four hanging holes are distributed in a central symmetry mode by taking the gravity center of the upper pressure plate as a central point.
Furthermore, two sides of the top surface of the upper pressure plate are respectively provided with a wing plate, the wing plates are perpendicular to the top surface of the upper pressure plate, and two ends of each wing plate are respectively distributed with one lifting hole.
Furthermore, a plurality of reinforcing plates are equidistantly distributed between the two wing plates.
Furthermore, two side edges of the reinforcing plate are respectively welded and fixed with the wing plates, and the bottom edge of the reinforcing plate is welded and fixed with the top surface of the upper pressure plate.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model has the advantages of simple structure and scientific and reasonable design, convenient to use is applicable to the transformer coil of the oily formula long circular structure of large capacity, and the plastic that is particularly useful for metallic glass transformer coil uses, makes the coil atress even to coil plastic in-process, avoids the atress inequality to cause coil insulation and wire winding to damage to guarantee the coil quality. The coil shaping device can shape a plurality of coils at one time, and can be placed in a drying tank together with a mould for drying, so that the insulation between the coil layers is solidified, and the coil cannot rebound after the forming mould is removed.
The utility model discloses a base that the top surface is rectangle and horizontal distribution, bottom surface are rectangle and horizontal distribution's top board, and base and top board all adopt the thick steel plate welding to form, also can strengthen weight when sound construction. The base is provided with a column which is welded and fixed with the base, the column is vertically distributed, the upper pressure plate is provided with a through hole which is matched with the column, the column passes through the through hole, the column is connected with a nut by screw thread, meanwhile, the upper pressure plate is provided with a lifting hole and is connected with lifting equipment through the lifting hole (the upper pressure plate is made of thick steel plates, has heavier weight and can be lifted by the lifting equipment), so when in use, the upper pressing plate is lifted through the hoisting equipment, the coil to be shaped is neatly stacked on the top surface of the base side by side, the upper pressing plate is put down again, the upper pressing plate is vertically pressed downwards on the coil to be shaped under the guide of the stand column, the upper pressing plate presses the coil to be shaped through self weight, then the stand column is locked through the nut, the base, the coil and the upper pressing plate are locked together, and the transformer coil forming die and the coil locked in the transformer coil forming die are hoisted into the drying tank through the hoisting equipment to be dried. Whole process is smooth simple and convenient, and easy operation can carry out the plastic to a plurality of coils simultaneously, and the shaping in-process coil atress is even, guarantees coil insulation and wire winding safety to can effectively guarantee the coil quality, coil and mould can get into the drying cylinder simultaneously and dry, make insulating solidification between the coil layer, the assurance is demolishd forming die back coil and can not bounce-back.
The utility model discloses establish the pterygoid lamina at the top surface of top board, establish the reinforcing plate between the pterygoid lamina, can effectively increase the rigidity and the weight of top board, guarantee that the plastic can smoothly go on.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a top view of the present invention.
Fig. 3 is a side view of the present invention.
Wherein, the names corresponding to the reference numbers are:
1-base, 2-upper press plate, 3-lifting hole, 4-column, 5-through hole, 6-nut, 7-wing plate and 8-reinforcing plate.
Detailed Description
The present invention will be further described with reference to the following description and examples, which include but are not limited to the following examples.
As shown in fig. 1-3, the utility model provides a pair of transformer coil forming die, simple structure, design scientific and reasonable, convenient to use are applicable to the transformer coil of the oily formula oblong structure of large capacity, are particularly useful for metallic glass transformer coil's plastic and use, make the coil atress even to coil plastic in-process, avoid the atress inequality to cause coil insulation and wire winding damage to guarantee the coil quality. The coil shaping device can shape a plurality of coils at one time, and can be placed in a drying tank together with a mould for drying, so that the insulation between the coil layers is solidified, and the coil cannot rebound after the forming mould is removed. The utility model comprises a base 1, a guide mechanism and an upper pressure plate 2 matched with the base 1 through the guide mechanism; the guide mechanism comprises two stand columns 4 fixed on the base 1, two through holes 5 which are respectively matched with the stand columns 4 are formed in the upper pressing plate 2, the two stand columns 4 penetrate through the two through holes 5, threads are arranged on the upper portions of the stand columns 4, nuts 6 are connected to the upper portions of the stand columns 4 through the threads, and the nuts 6 are located above the upper pressing plate 2.
The top surface of base 1 with the bottom surface size of top board 2 is the same. The top surface of the base 1 is rectangular and is horizontally distributed. The bottom surface of the upper pressure plate 2 is rectangular and is horizontally distributed.
Lifting hole 3 has been seted up to top surface of top board 2, top board 2 passes through lifting hole 3 is connected with lifting device. Specifically, there are four lifting holes 3, and the four lifting holes 3 are distributed in a central symmetry manner by taking the center of gravity of the upper press plate 2 as a central point. More specifically, two wing plates 7 are respectively arranged on two sides of the top surface of the upper pressure plate 2, the wing plates 7 are perpendicular to the top surface of the upper pressure plate 2, and two ends of each wing plate 7 are respectively provided with one lifting hole 3. And a plurality of reinforcing plates 8 are equidistantly distributed between the two wing plates 7. Two side edges of the reinforcing plate 8 are respectively welded and fixed with the wing plates 7, and the bottom edge of the reinforcing plate 8 is welded and fixed with the top surface of the upper pressure plate 2. The top surface of the upper pressure plate is provided with the wing plates, and the reinforcing plates are arranged between the wing plates, so that the rigidity and the weight of the upper pressure plate can be effectively increased, and the smooth shaping can be ensured. The lifting hole 3 is connected with a lifting device through a lifting hook with a chain.
The utility model discloses a base that the top surface is rectangle and horizontal distribution, bottom surface are rectangle and horizontal distribution's top board, and base and top board all adopt the thick steel plate welding to form, also can strengthen weight when sound construction. The base is provided with a column which is welded and fixed with the base, the column is vertically distributed, the upper pressure plate is provided with a through hole which is matched with the column, the column passes through the through hole, the column is connected with a nut by screw thread, meanwhile, the upper pressure plate is provided with a lifting hole and is connected with lifting equipment through the lifting hole (the upper pressure plate is made of thick steel plates, has heavier weight and can be lifted by the lifting equipment), so when in use, the upper pressing plate is lifted through the hoisting equipment, the coil to be shaped is neatly stacked on the top surface of the base side by side, the upper pressing plate is put down again, the upper pressing plate is vertically pressed downwards on the coil to be shaped under the guide of the stand column, the upper pressing plate presses the coil to be shaped through self weight, then the stand column is locked through the nut, the base, the coil and the upper pressing plate are locked together, and the transformer coil forming die and the coil locked in the transformer coil forming die are hoisted into the drying tank through the hoisting equipment to be dried. Whole process is smooth simple and convenient, and easy operation can carry out the plastic to a plurality of coils simultaneously, and the shaping in-process coil atress is even, guarantees coil insulation and wire winding safety to can effectively guarantee the coil quality, coil and mould can get into the drying cylinder simultaneously and dry, make insulating solidification between the coil layer, the assurance is demolishd forming die back coil and can not bounce-back.
The above embodiment is only one of the preferred embodiments of the present invention, and should not be used to limit the protection scope of the present invention, but all the insubstantial changes or modifications made in the spirit and the idea of the main design of the present invention, the technical problems solved by the embodiment are still consistent with the present invention, and all should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a transformer coil forming die which characterized in that: comprises a base (1), a guide mechanism and an upper pressure plate (2) matched with the base (1) through the guide mechanism; the guide mechanism comprises two stand columns (4) fixed on the base (1), the upper pressing plate (2) is provided with two through holes (5) which are respectively matched with the stand columns (4), and the two stand columns (4) are arranged in the two through holes (5) in a penetrating mode.
2. The transformer coil forming die of claim 1, wherein: the upper portion of stand (4) is equipped with the screw thread, the upper portion threaded connection of stand (4) has nut (6), and nut (6) are located top board (2).
3. The transformer coil forming die of claim 2, wherein: the top surface of the base (1) is rectangular and is horizontally distributed.
4. The transformer coil forming die of claim 3, wherein: the bottom surface of the upper pressure plate (2) is rectangular and is horizontally distributed.
5. The transformer coil forming die of claim 4, wherein: the top surface of the base (1) is the same as the bottom surface of the upper pressure plate (2).
6. The transformer coil forming die of claim 5, wherein: the top surface of the upper pressing plate (2) is provided with a lifting hole (3), and the upper pressing plate (2) is connected with a lifting device through the lifting hole (3).
7. The transformer coil forming die of claim 6, wherein: the number of the lifting holes (3) is four, and the four lifting holes (3) are distributed in a central symmetry mode by taking the gravity center of the upper pressing plate (2) as a central point.
8. The transformer coil forming die of claim 7, wherein: and two wing plates (7) are respectively arranged on two sides of the top surface of the upper pressing plate (2), the wing plates (7) are perpendicular to the top surface of the upper pressing plate (2), and two ends of each wing plate (7) are respectively distributed with one lifting hole (3).
9. The transformer coil forming die of claim 8, wherein: a plurality of reinforcing plates (8) are equidistantly distributed between the two wing plates (7).
10. The transformer coil forming die of claim 9, wherein: two side edges of the reinforcing plate (8) are respectively welded and fixed with the wing plates (7), and the bottom edge of the reinforcing plate (8) is welded and fixed with the top surface of the upper pressure plate (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922036700.7U CN210743784U (en) | 2019-11-22 | 2019-11-22 | Transformer coil forming die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922036700.7U CN210743784U (en) | 2019-11-22 | 2019-11-22 | Transformer coil forming die |
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| Publication Number | Publication Date |
|---|---|
| CN210743784U true CN210743784U (en) | 2020-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922036700.7U Active CN210743784U (en) | 2019-11-22 | 2019-11-22 | Transformer coil forming die |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108512376A (en) * | 2018-05-07 | 2018-09-07 | 成都中车电机有限公司 | A kind of electrical-coil oil pressure integer type device and electrical-coil shaping method |
-
2019
- 2019-11-22 CN CN201922036700.7U patent/CN210743784U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108512376A (en) * | 2018-05-07 | 2018-09-07 | 成都中车电机有限公司 | A kind of electrical-coil oil pressure integer type device and electrical-coil shaping method |
| CN108512376B (en) * | 2018-05-07 | 2024-03-01 | 成都中车电机有限公司 | Motor coil oil pressure shaping device and motor coil shaping method |
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