CN211265176U - Multi-spiral voltage regulating coil and 110kV on-load voltage regulating power transformer - Google Patents
Multi-spiral voltage regulating coil and 110kV on-load voltage regulating power transformer Download PDFInfo
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- CN211265176U CN211265176U CN202020197564.XU CN202020197564U CN211265176U CN 211265176 U CN211265176 U CN 211265176U CN 202020197564 U CN202020197564 U CN 202020197564U CN 211265176 U CN211265176 U CN 211265176U
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Abstract
The utility model relates to a many spiral voltage regulation coils, and adopt the utility model discloses 110kV of coil has on-load voltage regulation power transformer. The utility model discloses a multi-spiral voltage regulating coil, which comprises an insulating cylinder, wherein at least one layer of wire cake is arranged on the periphery of the insulating cylinder; two ends of each layer of the wire cake are respectively provided with an end ring; a group of supporting strips distributed along the circumferential direction are arranged on the outer side of each layer of line cake; the method is characterized in that: the wire cake is composed of a group of wire turns formed by leading a plurality of wires which are closely stacked side by side along the axial direction of the insulating cylinder into one end of the insulating cylinder, spirally winding the wires and then leading the wires out from the other end of the insulating cylinder; a group of cushion blocks are arranged between two adjacent wire turns to form an oil channel; the cushion blocks are fixed on the supporting strips. The utility model discloses under the prerequisite that does not increase the radial size of coil, the height of coil has been reduced. Furthermore, the utility model discloses a coil still has the reliability height, and the coiling is simple, advantage low in manufacturing cost.
Description
Technical Field
The utility model relates to a transformer manufacturing technical field, concretely relates to many spiral voltage regulation coils, and adopt the utility model discloses 110kV on-load voltage regulation power transformer of coil.
Background
Transformers are one of the main devices of power plants and substations. The transformer has the advantages that the transformer has multiple functions, the voltage can be increased to transmit electric energy to an electricity utilization area, and the voltage can be reduced to various levels of use voltage to meet the requirement of electricity utilization.
Because the price ratio of the electromagnetic wire and the silicon steel sheet of the power transformer is gradually increased, in order to consider the main material cost of the transformer, the diameter of the iron core is gradually increased in the electromagnetic calculation scheme of the transformer, and the height of the transformer body is gradually reduced. Or the height of the transformer body is gradually reduced along with the increase of the impedance of the transformer. In this case, a problem may occur in that the conventionally wound voltage control coil cannot be arranged. The prior art has addressed this problem by reducing the coil height, typically by adjusting the wire gauge, but this necessarily increases the radial dimension of the coil, resulting in an increase in MO (core to core) and tank size.
SUMMERY OF THE UTILITY MODEL
For overcoming the above-mentioned not enough that exists among the prior art, the utility model provides a many spiral voltage regulation coils. The utility model discloses under the prerequisite that does not increase the radial size of coil, reduced the height of coil, avoided because of transformer body height reduces the back, the problem that the coil can't be arranged, simultaneously, also avoided prior art through adjusting the wire gauge, reduce the coil height, lead to the problem of MO and oil tank size increase. Furthermore, the utility model discloses a many spiral voltage regulation coils still has the reliability height, and the coiling is simple, low in manufacturing cost's advantage. Correspondingly, the utility model also provides an use the utility model discloses a 110kV of many spiral coils has voltage regulation on load power transformer.
To the coil, the technical scheme of the utility model is that: a multi-spiral voltage-regulating coil comprises an insulating cylinder, wherein at least one layer of wire cake is arranged on the periphery of the insulating cylinder; two ends of each layer of the wire cake are respectively provided with an end ring; a group of supporting strips distributed along the circumferential direction are arranged on the outer side of each layer of line cake; the wire cake is composed of a group of wire turns formed by leading a plurality of wires which are closely stacked side by side along the axial direction of the insulating cylinder into one end of the insulating cylinder, spirally winding the wires and then leading the wires out from the other end of the insulating cylinder; a group of cushion blocks are arranged between two adjacent wire turns to form an oil channel; the cushion blocks are fixed on the supporting strips.
Through the experiment, the utility model discloses an insulation system of many spiral pressure regulating coil, safety, reliable. Compared with the prior art, the utility model discloses a many spiral voltage regulation coils has following progress: (1) the transformer eliminates the oil passages in the wire turns, only the oil passages are arranged between the adjacent wire turns, the number of the oil passages is small, the winding is simpler, the height of the coil is reduced, the problem that the coil cannot be arranged after the height of the transformer body is reduced is solved, and meanwhile, the problem that the MO and the size of an oil tank are increased due to the fact that the height of the coil is reduced by adjusting a wire gauge in the prior art is solved; (2) the quantity of the oil passages is reduced, so that the using amount of the cushion blocks is reduced, and the manufacturing cost is reduced.
In the multi-spiral voltage regulating coil, the wire cake may be formed by a group of wire turns formed by leading in four wires which are closely stacked side by side along the axial direction of the insulating cylinder from one end of the insulating cylinder, leading in the wires through spiral winding, and then leading out the wires from the other end of the insulating cylinder. At this moment, the utility model discloses a many spiral voltage regulation coils is four spiral voltage regulation coils.
In the aforementioned multi-spiral voltage regulating coil, the wire cake may also be formed by a group of wire turns formed by leading eight wires, which are stacked side by side in an abutting manner along an axial direction of the insulating cylinder, into the insulating cylinder from one end thereof, spirally winding the eight wires, and then leading the eight wires out from the other end of the insulating cylinder. At this moment, the utility model discloses a many spiral voltage regulation coils is eight spiral voltage regulation coils.
In the multi-spiral voltage regulating coil, two layers of wire cakes can be arranged on the periphery of the insulating cylinder. At this moment, the utility model discloses a many spiral pressure regulating is double-deck spiral structure.
In the multi-spiral voltage regulating coil, the thickness of the cushion block can be 2 mm. At this time, the size of the oil passage between two adjacent turns is 2 mm.
As an optimized scheme, in the multi-spiral pressure regulating coil, the cushion block is provided with the notches, and the cushion block is fixed through interference fit formed between the notches and the supporting bars.
To the transformer, the technical scheme of the utility model is that: the 110kV on-load voltage regulation power transformer comprises a voltage regulation coil; the voltage regulating coil comprises an insulating cylinder, and two layers of wire cakes are arranged on the periphery of the insulating cylinder; two ends of each layer of the wire cake are respectively provided with an end ring; a group of supporting strips distributed along the circumferential direction are arranged on the outer side of each layer of line cake; the wire cake is composed of a group of wire turns formed by leading four wires which are closely stacked side by side along the axial direction of the insulating cylinder into one end of the insulating cylinder, spirally winding the wires and leading the wires out from the other end of the insulating cylinder; a group of cushion blocks are arranged between two adjacent wire turns to form an oil channel; the cushion blocks are fixed on the supporting strips.
Compared with the prior art, the utility model discloses a 110kV has the pressure regulating coil that voltage regulating power transformer adopted in oil duct is small in quantity, and the coil height is lower, simultaneously because the cushion use amount is few, manufacturing cost is lower. In addition, because the coil height is lower, the utility model discloses a transformer can be with the lower of ware body height design, is favorable to further reducing manufacturing cost.
Drawings
FIG. 1 is a schematic diagram of an oil passage distribution structure of a pressure regulating coil in the prior art;
fig. 2 is a schematic diagram of the oil duct distribution structure of the multi-spiral type voltage regulating coil of the present invention;
fig. 3 is a schematic diagram of the overall structure of the multi-spiral voltage regulating coil of the present invention.
Reference numerals: 1-turn-to-turn oil passage; 2-end ring; 3-supporting the bars; 4-wire turns; 5-cushion block.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments (examples), which are described herein for illustrative purposes only and are not intended to be a basis for limiting the present invention. Those parts of the specification (including the drawings) which are not described in detail are conventional in the art.
The coils in the following comparative and specific examples are of a double-layer structure. In the attached drawings, the mark "-2" indicates that an oil passage is arranged at the position, and the size of the oil passage is 2 mm; the mark "-6" indicates that an oil channel is provided here, the oil channel having a size of 6 mm.
Comparative example: fig. 1 shows the oil duct distribution of the voltage regulating coil of a 110KV on-load voltage regulating power transformer in the prior art, the top and the bottom of the coil cake are respectively provided with a 6mm oil duct, 2mm oil ducts are arranged between adjacent wires wound in a turn, and meanwhile, 2mm oil ducts are also arranged between turns of adjacent wires, and 29 oil ducts of 2mm are provided in total.
Referring to fig. 2 and 3, the multi-spiral voltage regulating coil of the present invention comprises an insulating cylinder, at least one layer of wire cake is arranged on the periphery of the insulating cylinder; two ends of each layer of the wire cake are respectively provided with an end ring 2; a group of supporting strips 3 distributed along the circumferential direction are arranged on the outer side of each layer of line cake; the method is characterized in that: the wire cake is composed of a group of wire turns 4 formed by leading a plurality of wires which are closely stacked side by side along the axial direction of the insulating cylinder into one end of the insulating cylinder, spirally winding the wires and then leading the wires out from the other end of the insulating cylinder; a group of cushion blocks 5 are arranged between two adjacent wire turns 4 to form an inter-turn oil passage 1; the cushion block 5 is fixed on the supporting bars 3.
The utility model discloses a coil, because do not set up the oil duct in the circle, the oil duct is small in quantity, and the coil height is low, and the cushion use amount is few, low in manufacturing cost.
The wire cake is composed of a group of wire turns 4 formed by leading four wires which are closely stacked side by side along the axial direction of the insulating cylinder into one end of the insulating cylinder, spirally winding the wires and leading the wires out from the other end of the insulating cylinder. At this time, the voltage regulating coil has a four-spiral structure.
The wire cake is composed of a group of wire turns 4 formed by leading eight wires which are closely stacked side by side along the axial direction of the insulating cylinder into one end of the insulating cylinder, spirally winding the wires and then leading the wires out from the other end of the insulating cylinder. At this time, the voltage regulating coil has an eight-helix structure. The eight-helix structure is often used when the number of turns of the coil is large or the product capacity is large.
Two layers of wire cakes can be arranged on the periphery of the insulating cylinder. At this time, the voltage regulating coil is of a double-layer structure.
The cushion block can be fixed through the following structures: the cushion block 5 is provided with a notch, and the cushion block 5 is fixed through interference fit formed between the notch and the support bar 3.
As a specific example: it is a 110KV step insulation arrangement. Referring to fig. 2 and 3, the voltage regulating coil of the present embodiment is wound in the left direction, the top and the bottom of the coil cake are respectively provided with a 6mm oil passage, no oil passage is provided in the wire turns, 2mm inter-turn oil passages 1 are provided between adjacent wire turns, and 7 inter-turn oil passages 1 of 2mm are provided in total.
Compared with the prior art voltage regulating coil in fig. 1, the size of the oil passage in the axial direction of the coil is reduced by (29-7) × 2 ═ 44mm in the voltage regulating coil of the present embodiment, that is, the height of the voltage regulating coil of the present embodiment is 44mm lower than that of the prior art voltage regulating coil in fig. 1.
Referring to fig. 2 and fig. 3, the 110kV on-load voltage regulation power transformer of the present invention includes a voltage regulation coil; the voltage regulating coil comprises an insulating cylinder, and two layers of wire cakes are arranged on the periphery of the insulating cylinder; two ends of each layer of the wire cake are respectively provided with an end ring 2; a group of supporting strips 3 distributed along the circumferential direction are arranged on the outer side of each layer of line cake; it is characterized in that: the wire cake is composed of a group of wire turns 4 formed by leading four wires which are closely stacked side by side along the axial direction of the insulating cylinder into one end of the insulating cylinder, spirally winding the wires and leading the wires out from the other end of the insulating cylinder; a group of cushion blocks 5 are arranged between two adjacent wire turns 4 to form an inter-turn oil passage 1; the cushion block 5 is fixed on the supporting bars 3. The utility model discloses an oil duct is small in quantity in the voltage regulation coil that 110kV on-load voltage regulation power transformer adopted, and the coil height is lower, simultaneously because the cushion use amount is few, manufacturing cost is lower. In addition, because the coil height is lower, the utility model discloses a transformer can be with the lower of ware body height design, is favorable to further reducing manufacturing cost.
The above general description of the invention and the description of its specific embodiments in this application should not be construed as limiting the scope of the invention. According to the disclosure of the present invention, those skilled in the art can add, reduce or combine the technical features disclosed in the general description and/or the specific embodiments including the embodiments to form other technical solutions within the protection scope of the present invention without departing from the constituent elements of the present invention.
Claims (7)
1. A multi-spiral voltage-regulating coil comprises an insulating cylinder, wherein at least one layer of wire cake is arranged on the periphery of the insulating cylinder; two ends of each layer of the wire cake are respectively provided with an end ring (2); a group of supporting strips (3) distributed along the circumferential direction are arranged on the outer side of each layer of line cake; the method is characterized in that: the wire cake is composed of a group of wire turns (4) formed by leading a plurality of wires which are closely stacked side by side along the axial direction of the insulating cylinder into one end of the insulating cylinder, spirally winding the wires and then leading the wires out from the other end of the insulating cylinder; a group of cushion blocks (5) are arranged between two adjacent wire turns (4) to form an inter-turn oil passage (1); the cushion blocks (5) are fixed on the supporting strips (3).
2. The multi-spiral voltage regulating coil of claim 1, wherein: the wire cake is composed of a group of wire turns (4) formed by leading four wires which are closely stacked side by side along the axial direction of the insulating cylinder into one end of the insulating cylinder, spirally winding the wires and leading the wires out from the other end of the insulating cylinder.
3. The multi-spiral voltage regulating coil of claim 1, wherein: the wire cake is composed of a group of wire turns (4) formed by leading in eight wires which are closely stacked side by side along the axial direction of the insulating cylinder from one end of the insulating cylinder, leading in the wires, spirally winding the wires and leading out the wires from the other end of the insulating cylinder.
4. The multi-spiral voltage regulating coil of claim 1, wherein: and two layers of wire cakes are arranged on the periphery of the insulating cylinder.
5. The multi-spiral voltage regulating coil of claim 1, wherein: the thickness of the cushion block (5) is 2 mm.
6. The multi-spiral voltage regulating coil of claim 1, wherein: the cushion block (5) is provided with a notch, and the cushion block (5) is fixed through interference fit formed between the notch and the supporting bars (3).
The 7.110kV on-load voltage regulation power transformer comprises a voltage regulation coil; the voltage regulating coil comprises an insulating cylinder, and two layers of wire cakes are arranged on the periphery of the insulating cylinder; two ends of each layer of the wire cake are respectively provided with an end ring (2); a group of supporting strips (3) distributed along the circumferential direction are arranged on the outer side of each layer of line cake; the method is characterized in that: the wire cake is composed of a group of wire turns (4) formed by leading four wires which are closely stacked side by side along the axial direction of the insulating cylinder into one end of the insulating cylinder, spirally winding the wires and leading the wires out from the other end of the insulating cylinder; a group of cushion blocks (5) are arranged between two adjacent wire turns (4) to form an inter-turn oil passage (1); the cushion blocks (5) are fixed on the supporting strips (3).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020197564.XU CN211265176U (en) | 2020-02-24 | 2020-02-24 | Multi-spiral voltage regulating coil and 110kV on-load voltage regulating power transformer |
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| CN202020197564.XU CN211265176U (en) | 2020-02-24 | 2020-02-24 | Multi-spiral voltage regulating coil and 110kV on-load voltage regulating power transformer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113506680A (en) * | 2021-07-21 | 2021-10-15 | 保定天威集团特变电气有限公司 | Layered voltage regulating coil fixing method |
| CN115295292A (en) * | 2022-10-08 | 2022-11-04 | 通变电器有限公司 | High-stability spiral coil, coil binding method and power transformer |
-
2020
- 2020-02-24 CN CN202020197564.XU patent/CN211265176U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113506680A (en) * | 2021-07-21 | 2021-10-15 | 保定天威集团特变电气有限公司 | Layered voltage regulating coil fixing method |
| CN113506680B (en) * | 2021-07-21 | 2023-02-28 | 保定天威集团特变电气有限公司 | Layered voltage regulating coil fixing method |
| CN115295292A (en) * | 2022-10-08 | 2022-11-04 | 通变电器有限公司 | High-stability spiral coil, coil binding method and power transformer |
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