CN217902876U - Resin insulation variable frequency speed regulation transformer - Google Patents
Resin insulation variable frequency speed regulation transformer Download PDFInfo
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- CN217902876U CN217902876U CN202221837622.6U CN202221837622U CN217902876U CN 217902876 U CN217902876 U CN 217902876U CN 202221837622 U CN202221837622 U CN 202221837622U CN 217902876 U CN217902876 U CN 217902876U
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Abstract
The utility model discloses a resin insulation variable frequency speed regulation transformer, which comprises a transformer body, wherein the transformer body comprises an iron core and a high-voltage coil sleeved outside the iron core, the tapping line of the high-voltage coil is arranged at the upper end of the transformer body, and the sealing line of the high-voltage coil is connected at the lower end of the transformer body; the tapping connecting piece is connected with the fixed contact of the tapping connecting piece, a plurality of movable contacts of the tapping connecting piece are respectively connected with different positions of the sealing line corresponding to the tapping connecting piece, and the tapping connecting piece is positioned at the upper end of the transformer body. The tapping line is arranged at the upper part of the transformer and is led out from the upper part, so that the lead wire is prevented from occupying a large space in the leading-out process, the heat dissipation capacity of the high-voltage coil is improved, the partial discharge of the transformer is reduced, and the manufacturing yield and the operation reliability of the transformer are improved.
Description
Technical Field
The utility model relates to a voltage-regulating inverter technical field, more specifically say, relate to a transformer for resin insulation variable frequency speed governing.
Background
The high-voltage coil of the existing resin insulation variable frequency speed regulation transformer mostly adopts a star connection method, and the tapping line of the high-voltage coil is arranged at the lower end of the transformer and is led to the upper end of the transformer through three lead wires. The space of branch wiring is walked the line distance long, not only influences the heat dissipation of transformer, still causes the partial discharge of surrounding parts easily to lead to the transformer to discharge and burns out, seriously influences the operational reliability of transformer.
In summary, how to improve the operation reliability of the transformer is a problem to be solved urgently by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a resin insulation variable frequency speed control uses transformer, the shunting line sets up in the upper portion of transformer and is drawn forth by upper portion, has improved the coil heat-sinking capability, has reduced the partial discharge of transformer, has improved the reliability of transformer operation.
In order to achieve the above object, the present invention provides the following technical solutions:
a transformer for resin insulation variable frequency speed regulation comprises a transformer body, wherein the transformer body comprises an iron core and a high-voltage coil sleeved outside the iron core, branch wires of the high-voltage coil are arranged at the upper end of the transformer body, and a seal wire of the high-voltage coil is connected at the lower end of the transformer body;
the tapping connecting piece is connected with the fixed contact of the tapping connecting piece, a plurality of movable contacts of the tapping connecting piece are respectively connected with different positions of the sealing line corresponding to the tapping connecting piece, and the tapping connecting piece is located at the upper end of the transformer body.
Preferably, the movable contacts are distributed in a linear shape.
Preferably, the movable contacts are distributed in a fan shape, and a plurality of the movable contacts are all positioned on the same arc line with the fixed contact as the center of a circle.
Preferably, the number of the movable contacts is three, and the two movable contacts on the two sides are symmetrically distributed about the connecting line between the movable contact in the middle and the fixed contact.
Preferably, the tap connection piece comprises a copper plate.
Preferably, the tapping connecting pieces corresponding to the plurality of tapping lines have the same size.
The utility model provides a transformer for resin insulation Variable Frequency Speed Governing (VFSG) sets up high-voltage coil's shunting line in transformer body's upper end and draws forth by the shunting connection piece of upper end, avoids three shunting lines to draw forth from bottom to top in the current structure, has avoided the lead wire to occupy a large amount of spaces, influence the heat dissipation of transformer at the in-process of drawing forth, has also avoided the partial discharge of high electric field to structure on every side.
Therefore, the utility model provides a transformer for resin insulation variable frequency speed governing has improved high-voltage coil's heat-sinking capability, has reduced the partial discharge of transformer, has improved the manufacturing yields and the operational reliability of transformer.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a specific embodiment of a transformer for resin insulation variable frequency speed regulation provided by the present invention;
FIG. 2 is a schematic circuit diagram of a high voltage coil;
fig. 3 is a schematic structural view of a tapping connecting sheet.
In fig. 1-3:
1 is iron core, 2 is high-voltage coil, 3 is branch connection wire, 4 is branch connection piece, 5 is seal wire.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The core of the utility model is to provide a transformer for resin insulation variable frequency speed governing, the shunting line sets up in the upper portion of transformer and is drawn forth by upper portion, has improved the coil heat-sinking capability, has reduced the partial discharge of transformer, has improved the reliability of transformer operation.
Referring to fig. 1-3, fig. 1 is a schematic structural diagram of a transformer for resin insulation variable frequency speed control according to an embodiment of the present invention; FIG. 2 is a schematic circuit diagram of a high voltage coil; fig. 3 is a schematic structural view of a tap connecting piece.
The utility model provides a transformer for resin insulation variable frequency speed regulation, including the transformer body, the transformer body includes iron core 1 and the high-voltage coil 2 that the cover was located outside iron core 1, and the branch line 3 of high-voltage coil 2 all sets up in the upper end of transformer body, and the seal line 5 of high-voltage coil 2 is connected at the lower extreme of transformer body; the tapping connecting wire 3 is connected with the fixed contact of the tapping connecting sheet 4, a plurality of movable contacts of the tapping connecting sheet 4 are respectively connected with different positions of the sealing wire 5 corresponding to the tapping wire 3, and the tapping connecting sheet 4 is positioned at the upper end of the transformer body.
The material and size of the iron core 1, the material, the wire diameter, the number of turns and the like of the high-voltage coil 2 are determined according to the design parameters of the transformer in actual production by referring to the prior art, and are not described again herein.
Please refer to fig. 1-3,A and B, C as the fixed contacts of the tapping connecting piece I, the tapping connecting piece II and the tapping connecting piece III, respectively; x, Y, Z is three sealing lines of the high voltage coil 2, the sealing line X is connected with three moving contacts A1, A2, A3 of the tapping connecting piece I, the sealing line Y is connected with three moving contacts B1, B2, B3 of the tapping connecting piece II, and the sealing line Z is connected with three moving contacts C1, C2, C3 of the tapping connecting piece III.
As shown in fig. 1, three tapping wires 3 of a high-voltage coil 2 are all arranged at the upper end of a transformer body and are connected with tapping connecting sheets 4 arranged at the upper end of the transformer body; as shown in fig. 1 and 2, three seal wires 5 of the high-voltage coil 2 are connected at the lower end of the transformer body.
The tapping connecting piece 4 is made of a conductive material, considering conductivity and price factors, preferably, the tapping connecting piece 4 can comprise a copper plate, and the specific model and the size of the copper plate are determined according to the conductivity requirement of the tapping connecting piece 4 in actual production, and are not described in detail herein.
The fixed contact of the branch connection sheet 4 is connected with the branch connection wire 3, the movable contact is connected with the seal wire 5, and the connection position of each movable contact and the seal wire 5 is determined according to the design requirement of the high-voltage coil 2, which is not described again.
Preferably, the movable contacts are distributed in a sector shape, and a plurality of movable contacts are all positioned on the same arc line with the movable contacts as the centers of the circles. The movable contacts distributed in the sector shape can realize the switching of tapping only by a single tapping connecting sheet 4, the operation is simple and easy, the number of the tapping connecting sheets 4 is reduced, and the simplification of a wiring structure is facilitated.
Preferably, the number of the movable contacts is three, the two movable contacts on the two sides are symmetrically distributed about the connecting line between the movable contact in the middle and the fixed contact, and the tapping switching operation is simple and convenient.
Taking the tapping connecting sheet I as an example, the tapping connecting sheet I is shifted leftwards and can be connected with the fixed contact A and the movable contact A1; the tapping connecting sheet I keeps the middle position and can be connected with the fixed contact A and the movable contact A2; the tapping connecting sheet III is shifted to the right and can be connected with the fixed contact A and the movable contact A3.
Of course, it is also possible to arrange the moving contacts in a linear distribution, and if only a single tapping connecting piece 4 is provided, the length of the tapping connecting piece 4 needs to be greater than the maximum distance between the fixed contact and the moving contact.
In the implementation, the tapping line 3 of the high-voltage coil 2 is arranged at the upper end of the transformer body and is led out by the tapping connecting sheet 4 at the upper end, so that the three tapping lines 3 in the existing structure are prevented from being led out from bottom to top, the lead wire is prevented from occupying a large space in the leading-out process and influencing the heat dissipation of the transformer, and the partial discharge of a high electric field to surrounding structural members is also prevented. Therefore, the heat dissipation capability of the high-voltage coil 2 is improved, the partial discharge of the transformer is reduced, and the manufacturing yield and the operation reliability of the transformer are improved.
Preferably, the tapping connecting pieces 4 corresponding to the plurality of tapping lines 3 may be provided with the same size, so as to reduce the number of parts and the cost of the parts.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
It is right above the utility model provides a transformer for resin insulation variable frequency speed governing has carried out detailed introduction. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (6)
1. A transformer for resin insulation variable frequency speed regulation comprises a transformer body, wherein the transformer body comprises an iron core (1) and a high-voltage coil (2) sleeved outside the iron core (1), and is characterized in that tapping wires (3) of the high-voltage coil (2) are arranged at the upper end of the transformer body, and sealing wires (5) of the high-voltage coil (2) are connected at the lower end of the transformer body;
the tapping connecting piece (3) is connected with a fixed contact of the tapping connecting piece (4), a plurality of movable contacts of the tapping connecting piece (4) are respectively connected with different positions of the sealing line (5) corresponding to the tapping connecting piece (3), and the tapping connecting piece (4) is positioned at the upper end of the transformer body.
2. The resin-insulated variable-frequency speed-regulating transformer according to claim 1, wherein said movable contacts are linearly arranged.
3. The resin-insulated variable-frequency speed-regulating transformer according to claim 1, wherein said movable contacts are distributed in a fan shape, and a plurality of said movable contacts are all located on the same arc line with said fixed contact as a center.
4. The resin-insulated variable-frequency speed-regulating transformer according to claim 3, wherein the number of said movable contacts is three, and two of said movable contacts located at both sides are symmetrically distributed with respect to a connecting line between the movable contact located at the middle and said fixed contact.
5. The resin-insulated variable-frequency variable-speed transformer according to any one of claims 1 to 4, wherein the tapping connecting piece (4) comprises a copper plate.
6. The resin-insulated variable-frequency variable-speed transformer according to any one of claims 1 to 4, wherein the tap connection pieces (4) corresponding to the plurality of tap lines (3) have the same size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221837622.6U CN217902876U (en) | 2022-07-15 | 2022-07-15 | Resin insulation variable frequency speed regulation transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221837622.6U CN217902876U (en) | 2022-07-15 | 2022-07-15 | Resin insulation variable frequency speed regulation transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217902876U true CN217902876U (en) | 2022-11-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221837622.6U Active CN217902876U (en) | 2022-07-15 | 2022-07-15 | Resin insulation variable frequency speed regulation transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217902876U (en) |
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2022
- 2022-07-15 CN CN202221837622.6U patent/CN217902876U/en active Active
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