CN212365720U - Transformer insulation structure with shielding ring of voltage regulating coil suitable for special environment - Google Patents
Transformer insulation structure with shielding ring of voltage regulating coil suitable for special environment Download PDFInfo
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- CN212365720U CN212365720U CN202021434554.XU CN202021434554U CN212365720U CN 212365720 U CN212365720 U CN 212365720U CN 202021434554 U CN202021434554 U CN 202021434554U CN 212365720 U CN212365720 U CN 212365720U
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Abstract
The utility model provides a transformer insulation structure with a voltage regulating coil provided with a shielding ring, which is suitable for special environment, and comprises a voltage regulating coil and an end insulator; the voltage regulating coil is wound on the outer side of the high-voltage coil of the transformer; the voltage regulating coil is characterized by further comprising a shielding ring and a soft angle ring, wherein the shielding ring is arranged at the upper end part and the lower end part of the voltage regulating coil, the soft angle ring is placed on the outer side of the shielding ring, and the outer side of the soft angle ring is pressed tightly through end insulation. The shielding ring is an arc angle flat copper wire wrapped with insulating paper, is made into an opening ring shape, the two ends of the opening flat copper wire are processed into arc shapes, and the shielding ring is placed at the upper end and the lower end of the voltage regulating coil during coil winding. The transformer body insulation structure of the voltage regulating coil with the shielding ring has the advantages of being reasonable in structure, excellent in performance, capable of improving the electric field at the end of the voltage regulating coil, reducing insulation distance, enabling the insulation structure to be compact, saving cost and the like, capable of improving operation reliability of a transformer, and suitable for being used in an environment with prominent problems of frequent power failure, unstable power supply, frequent power grid fluctuation and the like.
Description
Technical Field
The utility model relates to a transformer technical field, in particular to transformer insulation system of voltage regulating coil area shield ring suitable for special environment.
Background
At present, the problems of power shortage in Africa, frequent power failure, unstable power supply, frequent power grid fluctuation and the like are prominent, and the reliability requirement of the operation of the transformer by the factors is higher. The insulating assembly of voltage regulating coil ware body of present oil-immersed transformer is shown in fig. 9, and voltage regulating coil's main insulation, radial direction: the main insulation between the high voltage coil and the voltage regulating coil is shown in dimension a. Axial direction: the primary insulation between the high voltage coil and the voltage regulator coil is shown in the dimension B, C. The voltage regulating coil adopts a layered structure, and the upper end part and the lower end part are provided with end insulation. For a 132kV transformer, the potential difference between the head end of a voltage regulating coil and the ground is large, and the electric field is extremely uneven. How to guarantee the product quality, how to make the high electric field distribution at the end part uniform and further reduce the main insulation of the transformer are the goals sought by people. In order to achieve the purpose, a shielding ring is additionally arranged at the upper end part and the lower end part of a voltage regulating coil, the uniformity of an electric field at the end parts can be improved, the original structure is improved and innovated, the main insulation distance of the voltage regulating coil to a high-voltage winding and the ground is reduced, the material consumption is reduced, and the manufacturing cost of a transformer is saved.
Disclosure of Invention
In order to solve the technical problem that the background art provided, the utility model provides a voltage regulating coil takes transformer insulation system of shield ring suitable for special environment, rational in infrastructure, the excellent performance voltage regulating coil takes the ware body insulation system of shield ring, has and improves voltage regulating coil tip electric field, reduces insulation distance, makes insulation system compact, practices thrift characteristics such as cost, improves transformer operational reliability, is applicable to frequently to have a power failure, supplies power unstably, uses under the undulant frequent more outstanding environment of scheduling problem of electric wire netting.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a voltage regulating coil with a shielding ring is suitable for a transformer insulation structure in a special environment, and comprises a voltage regulating coil and an end insulator; the voltage regulating coil is wound on the outer side of the high-voltage coil of the transformer;
the utility model is characterized in that: the voltage regulating coil is characterized by further comprising a shielding ring and a soft angle ring, wherein the shielding ring is arranged at the upper end part and the lower end part of the voltage regulating coil, the soft angle ring is placed on the outer side of the shielding ring, and the outer side of the soft angle ring is pressed tightly through end insulation.
The shielding ring is an arc angle flat copper wire wrapped with insulating paper, an opening ring shape is manufactured, the two ends of the opening flat copper wire are processed into arc shapes, the end faces are smooth, the shielding ring is placed at the upper end and the lower end of the voltage regulating coil during coil winding, and the arc angle side is away from the winding line segment of the voltage regulating coil.
Furthermore, the soft angle rings are L-shaped angle rings made of corrugated boards and are encircled into a circular ring shape, and the positive and negative L-shaped angle rings are stacked on the outer sides of the shielding rings in pairs.
Further, the end insulation is an inclined end ring formed by paper boards in a surrounding mode.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the shielding ring has the function of improving the uniformity of an electric field, the electric field at the end part is improved, the impact insulation level is improved, and the operation reliability of the transformer is improved; the power supply device is suitable for being used in the environment with prominent problems such as frequent power failure, unstable power supply, frequent power grid fluctuation and the like;
2. the insulation distance between the voltage regulating coil and the high-voltage coil can be reduced, and the material consumption of the transformer coil, the iron core and the like is reduced. The cost is reduced.
Drawings
FIG. 1 is a diagram of the insulation structure of the transformer with shielding ring of the voltage regulating coil of the transformer of the present invention;
FIG. 2 is a structural view of the shielding ring of the present invention;
fig. 3 is a cross-sectional view of the shield ring of the present invention;
FIG. 4 is an expanded view of the soft angle ring of the present invention;
FIG. 5 is a view of the L-shaped angle ring of the present invention;
FIG. 6 is a diagram showing the positions of the soft angle ring and the shielding ring of the present invention;
FIG. 7 is a diagram of the end insulation structure of the present invention;
fig. 8 is a top view of the end insulation structure of the present invention;
fig. 9 is a prior art insulation structure of a transformer tap.
In the figure: 1-high voltage coil 2-voltage regulating coil 3-upper end insulation 4-lower end insulation 5-shielding ring 51-insulation layer 52-wire 6-soft angle ring 61-L type angle ring.
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.
As shown in fig. 1, an insulation structure of a voltage regulating coil with a shielding ring for a transformer suitable for a special environment comprises a voltage regulating coil 2 and end insulators 3 and 4; the voltage regulating coil 2 is wound outside the high-voltage coil 1 of the transformer.
The utility model is characterized in that: still include shield ring 5 and soft angle ring 6, the shield ring setting at the upper and lower tip of voltage regulation coil 2, soft angle ring 6 is placed in the shield ring 5 outside, the outside of soft angle ring 6 is compressed tightly by end insulation 3 and 4.
As shown in fig. 2-3, the shielding ring 5 is an arc angle flat copper wire (inside is a wire 52, and an insulating layer 51 is coated with insulating paper) coated with insulating paper, and is made into an open circular ring shape, two ends of the opening flat copper wire are machined into arc shapes, and the end surfaces are smooth, and when winding the coil, the shielding ring is placed at the upper end and the lower end of the voltage regulating coil 2, and a winding line segment of the voltage regulating coil 2 is far away from the arc angle side.
A soft angle ring 6 is placed between the shield ring 5 and the end insulation 3 and 4. As shown in fig. 4-6, the soft angle ring 6 is an L-shaped angle ring 61 made of 0.5mm thick corrugated cardboard. Because the corrugated plate has elasticity and plasticity, the corrugated plate can be enclosed into a circular ring shape, and the positive and negative L-shaped angle rings 61 can be stacked on the outer side of the shielding ring 5 in pairs.
As shown in fig. 7-8, the end insulators 3 and 4 are inclined end rings made of cardboard, and are disposed at the upper and lower ends of the voltage-regulating coil 2 in an annular structure.
The shielding ring 5 has the function of improving the uniformity of an electric field, improves the electric field at the end part, improves the impact insulation level and can reduce the insulation distance between the voltage regulating coil 2 and the high-voltage coil 1. Comparing fig. 1 and 9, it can be seen that: in fig. 9, the main insulation of the voltage regulating coil 2 of the prior art, the radial direction: the main insulation between the high voltage coil 1 and the regulator coil 2, i.e. dimension a, is shown. Axial direction: the main insulation between the high voltage coil 1 and the voltage regulating coil 2, B, C, is dimensioned. The voltage regulating coil 2 adopts a layered structure, and the upper end part and the lower end part are provided with end insulators 3 and 4. In fig. 1, the utility model discloses a main insulation of voltage regulation coil 2, radial direction: the main insulation between the high voltage coil 1 and the voltage regulating coil 2, i.e. the a1 size, is shown. Axial direction: the main insulation between the high voltage coil 1 and the voltage regulating coil 2, i.e. the B1 size, is shown. A1 < A, B1 < B, C1 < C. Thereby reducing the material consumption of the transformer coil and the iron core. The cost is reduced.
The above embodiments are implemented on the premise of the technical solution of the present invention, and detailed implementation and specific operation processes are given, but the protection scope of the present invention is not limited to the above embodiments. The methods used in the above examples are conventional methods unless otherwise specified.
Claims (3)
1. A voltage regulating coil with a shielding ring is suitable for a transformer insulation structure in a special environment, and comprises a voltage regulating coil and an end insulator; the voltage regulating coil is wound on the outer side of the high-voltage coil of the transformer;
the voltage regulating coil is characterized by further comprising a shielding ring and a soft angle ring, wherein the shielding ring is arranged at the upper end part and the lower end part of the voltage regulating coil, the soft angle ring is placed on the outer side of the shielding ring, and the outer side of the soft angle ring is pressed tightly through end insulation;
the shielding ring is an arc angle flat copper wire wrapped with insulating paper, an opening ring shape is manufactured, the two ends of the opening flat copper wire are processed into arc shapes, the end faces are smooth, the shielding ring is placed at the upper end part and the lower end part of the voltage regulating coil during coil winding, and the arc angle side is away from a winding line segment of the voltage regulating coil.
2. The insulation structure of transformer with shielding ring for voltage regulating coil according to claim 1, wherein said soft angle ring is an L-shaped angle ring made of corrugated cardboard, and is enclosed into a circular ring shape, and the positive and negative L-shaped angle rings are stacked in pairs outside the shielding ring.
3. The insulation structure of transformer with shielding ring for voltage regulating coil in accordance with claim 1, wherein said end insulation is an inclined end ring made of paper board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021434554.XU CN212365720U (en) | 2020-07-20 | 2020-07-20 | Transformer insulation structure with shielding ring of voltage regulating coil suitable for special environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021434554.XU CN212365720U (en) | 2020-07-20 | 2020-07-20 | Transformer insulation structure with shielding ring of voltage regulating coil suitable for special environment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212365720U true CN212365720U (en) | 2021-01-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021434554.XU Active CN212365720U (en) | 2020-07-20 | 2020-07-20 | Transformer insulation structure with shielding ring of voltage regulating coil suitable for special environment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212365720U (en) |
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2020
- 2020-07-20 CN CN202021434554.XU patent/CN212365720U/en active Active
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