CN216412848U - Winding structure of dry-type hollow series reactor - Google Patents
Winding structure of dry-type hollow series reactor Download PDFInfo
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- CN216412848U CN216412848U CN202122171121.0U CN202122171121U CN216412848U CN 216412848 U CN216412848 U CN 216412848U CN 202122171121 U CN202122171121 U CN 202122171121U CN 216412848 U CN216412848 U CN 216412848U
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Abstract
The utility model belongs to the technical field of power equipment, and particularly relates to a winding structure of a dry-type hollow series reactor. The dry-type hollow series reactor overcomes the condition that the voltage difference between layers of a parallel structure and between the coil end and the star frame is large, and simultaneously overcomes the problem that the reactor is large in size under the condition of meeting the requirement of loss, so that the reactor can run reliably, and the occupied area is reduced.
Description
Technical Field
The utility model belongs to the technical field of power equipment, and particularly relates to a winding structure of a dry type hollow series reactor.
Background
At present, power grid construction, extension and transformation in China are deepened continuously, although a dry-type air-core reactor designed by a traditional parallel structure is widely applied, the dry-type air-core reactor is designed for a reactor with low current and high inductance, the number of turns is large, the height of a coil is high due to large inductance, the current density is small, the temperature rise is low due to small current, the designed product is overlarge in appearance, the design margin is large, and the cost is greatly increased. The existing parallel design scheme has high design difficulty and often causes cost waste for small-capacity products if the loss requirement of the reactor DL462-1992 standard needs to be met. If a series winding structure is used, the voltage difference between coils of each layer and between the coil end and the star frame is large, and the phenomenon of interlayer or end breakdown is easily caused during lightning impact.
Disclosure of Invention
In order to overcome the defects in the prior art, the utility model provides a winding structure of a dry type hollow series reactor.
The utility model is realized by the following technical scheme: a winding structure of a dry-type hollow series reactor comprises an upper star frame, a lower star frame and a plurality of coil envelopes arranged from inside to outside, wherein the coil envelopes are formed by overlapping a plurality of coil cakes one by one along the axial direction of the coil envelopes, the coil cakes are mutually connected in series, and the coil envelopes are mutually connected in parallel.
In the scheme, the coil cake is formed by winding a wire in a layer-by-layer radial direction along the radial direction of coil encapsulation to form a cake-shaped coil.
In the above scheme, the wire is a flat aluminum wire.
In the scheme, the connecting end of the first coil cake and the second coil cake is arranged on the outer ring of the coil cake, the connecting end of the second coil cake and the third coil cake is arranged on the inner ring of the coil cake, the connecting end of the third coil cake and the fourth coil cake is arranged on the outer ring of the coil cake, and the like.
In the above scheme, the starting end of each coil package is connected to the lower spider, and the terminating end of each coil package is connected to the upper spider.
In the scheme, the supporting strips are arranged between the coil envelopes, so that the heat dissipation air passage is formed between every two adjacent coil envelopes.
Compared with the prior art, the winding structure of the dry-type hollow series reactor has the beneficial effects that:
1. the condition that voltage difference between layers of a series structure and between the coil end and the star frame is large is overcome, and the reactor can run reliably.
2. The problem of large reactor volume under the requirement of meeting loss is solved, and the field occupied area is obviously reduced.
3. The design cost of the reactor is reduced.
Drawings
Fig. 1 is a schematic structural diagram of a winding structure of a dry-type air-core series reactor according to the present invention.
Fig. 2 is an enlarged view at a in fig. 1.
Fig. 3 is a schematic winding of a coil cake.
In the figure: 1. the coil comprises an upper star frame, 2 coil cakes, 3 inner coil packages, 4 outer coil packages, 5 lower star frame, 6 first coil cakes, 7 second coil cakes, 8 third coil cakes, 9 fourth coil cakes, 10 supporting strips, 11 starting ends of the first coil cakes, 12 stopping ends of the first coil cakes, 13 starting ends of the second coil cakes and 14 stopping ends of the second coil cakes.
Detailed Description
The winding structure of a dry-type air-core series reactor according to the present invention is further described with reference to the following embodiments in conjunction with the accompanying drawings:
fig. 1 is a structural schematic diagram of a winding structure of a dry-type air-core series reactor of the present invention, fig. 2 is an enlarged view at a in fig. 1, and fig. 3 is a winding schematic diagram of a coil cake. In the figure, the winding structure of the dry type hollow series reactor comprises an upper star frame 1, a lower star frame 5, an inner coil envelope 3 and an outer coil envelope 4 which are arranged from inside to outside, each coil envelope is formed by superposing a plurality of coil cakes 2 one by one along the axial direction of the coil envelope, the coil cakes 2 are formed by winding a lead in the radial direction of the coil envelope layer by layer to form a cake-shaped coil, and the lead is a flat aluminum wire. Each coil cake is connected in series, the connecting end of the first coil cake 6 and the second coil cake 7 is arranged on the outer ring of the coil cake, the connecting end of the second coil cake 7 and the third coil cake 8 is arranged on the inner ring of the coil cake, the connecting end of the third coil cake 8 and the fourth coil cake 9 is arranged on the outer ring of the coil cake, and the like. The coil envelopes are mutually connected in parallel, the starting end of each coil envelope is connected with the lower star frame 5, and the terminating end of each coil envelope is connected with the upper star frame 1. And a stay is arranged between the coil envelopes, so that a heat dissipation air passage is formed between every two adjacent coil envelopes.
Fig. 3 is a schematic winding diagram of coil cakes, and it can be seen from the diagram that after a first coil cake starting end 11 starts to be wound clockwise from inside to outside to an outer ring, a first coil cake terminating end 12 turns to a second coil cake starting end 13, and then is wound clockwise from outside to inside to an inner ring second coil cake terminating end 14, and so on, one envelope is wound in sequence.
The dry-type hollow series reactor overcomes the condition that the voltage difference between layers of a parallel structure and between the coil end and the star frame is large, and simultaneously overcomes the problem that the reactor is large in size under the condition of meeting the requirement of loss, so that the reactor can run reliably, and the occupied area is reduced.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (2)
1. The utility model provides a wire winding structure of dry-type hollow series reactor, includes that upper and lower star frame reaches a plurality of coils that set up from inside to outside and encapsulates its characterized in that: the coil package is characterized in that a plurality of coil cakes (2) are stacked one by one along the axial direction of the coil package, the coil cakes are connected in series, the coil packages are connected in parallel, the coil cakes (2) are formed by flat aluminum wires in a manner of radially winding the flat aluminum wires layer by layer along the radial direction of the coil package to form a cake-shaped coil, the connecting ends of a first coil cake (6) and a second coil cake (7) are arranged on the outer ring of the coil cakes, the connecting ends of the second coil cake (7) and a third coil cake (8) are arranged on the inner ring of the coil cakes, the connecting ends of the third coil cake (8) and a fourth coil cake (9) are arranged on the outer ring of the coil cakes in a manner of analogy, the starting end of each coil package is connected with a lower star frame (5), and the terminating end of each coil package is connected with an upper star frame (1).
2. A winding structure of a dry-type air-core series reactor according to claim 1, characterized in that: and a stay (10) is arranged between the coil envelopes, so that a heat dissipation air passage is formed between every two adjacent coil envelopes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122171121.0U CN216412848U (en) | 2021-09-08 | 2021-09-08 | Winding structure of dry-type hollow series reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122171121.0U CN216412848U (en) | 2021-09-08 | 2021-09-08 | Winding structure of dry-type hollow series reactor |
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| Publication Number | Publication Date |
|---|---|
| CN216412848U true CN216412848U (en) | 2022-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122171121.0U Active CN216412848U (en) | 2021-09-08 | 2021-09-08 | Winding structure of dry-type hollow series reactor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116469655A (en) * | 2023-06-19 | 2023-07-21 | 北京电科能创技术有限公司 | High-coupling miniaturized dry-type air-core reactor |
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2021
- 2021-09-08 CN CN202122171121.0U patent/CN216412848U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116469655A (en) * | 2023-06-19 | 2023-07-21 | 北京电科能创技术有限公司 | High-coupling miniaturized dry-type air-core reactor |
| CN116469655B (en) * | 2023-06-19 | 2023-09-01 | 北京电科能创技术有限公司 | High-coupling miniaturized dry-type air-core reactor |
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