CN112951556A - Novel high-capacity axial split transformer body structure and heat dissipation method - Google Patents
Novel high-capacity axial split transformer body structure and heat dissipation method Download PDFInfo
- Publication number
- CN112951556A CN112951556A CN202110300319.6A CN202110300319A CN112951556A CN 112951556 A CN112951556 A CN 112951556A CN 202110300319 A CN202110300319 A CN 202110300319A CN 112951556 A CN112951556 A CN 112951556A
- Authority
- CN
- China
- Prior art keywords
- low
- voltage coil
- transformer body
- voltage
- end ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/12—Oil cooling
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2876—Cooling
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Coils Of Transformers For General Uses (AREA)
Abstract
The invention relates to a novel high-capacity axial split transformer body structure and a heat dissipation method, and belongs to the technical field of transformers. The technical scheme is as follows: the axial low-voltage coil of the transformer body comprises a first low-voltage coil (1) positioned at the upper part and a second low-voltage coil (4) positioned at the lower part, and the first low-voltage coil (1) and the second low-voltage coil (4) are provided with height adjusting structures; the end ring (2) is arranged in the middle of the transformer body, between the first low-voltage coil and the second low-voltage coil, the angle ring (3) is arranged on the inner side and the outer side of the second low-voltage coil, an oil duct is arranged in the middle of the second low-voltage coil, and transformer oil flows upwards from the oil duct in the middle and flows to the inner side and the outer side of the first low-voltage coil through the end ring. The axial low-voltage coil is divided into two independent coils, so that the height can be adjusted, the ampere-turn balance is ensured, and the short-circuit resistance of the product is improved; in the middle of the transformer body, an end ring and an angle ring are arranged between two independent low-voltage coils to increase the insulation distance and the size of a heat dissipation oil duct, so that the requirements of the insulation distance and the temperature rise of the coils of 40.5kV voltage are met.
Description
Technical Field
The invention relates to a novel high-capacity axial split transformer body structure and a heat dissipation method, and belongs to the technical field of transformers.
Background
The offshore wind power main transformer is of a low-voltage axial split structure, has large capacity (220000 kVA), has high requirement on short circuit bearing capacity, requires that the height of a low-voltage coil is adjustable (ensures the height deviation of the low-voltage coil after being sleeved, ensures ampere-turn balance and improves the short circuit resistance of a product), and the low-voltage coil of a conventional product is an integral body (the height cannot be adjusted) and does not meet the requirement on the short circuit resistance of the product; the low-voltage insulation level is 40.5kV, the low-voltage insulation level of a conventional splitting product is 10kV, meanwhile, the product capacity is large, the temperature rise requirement is high, the size of a coil heat dissipation oil duct needs to be ensured, and the conventional body structure cannot meet the requirements on the insulation distance and the coil temperature rise in the middle (low voltage) of the body.
Disclosure of Invention
The invention aims to provide a novel high-capacity axial split transformer body structure and a heat dissipation method, wherein an axial low-voltage coil is divided into two independent coils, the height can be adjusted, the ampere-turn balance is ensured, and the short-circuit resistance of a product is improved; in the middle of the transformer body, an end ring and an angle ring are arranged between two independent low-voltage coils to increase the insulation distance and the size of a heat dissipation oil duct, so that the requirements of the insulation distance and the temperature rise of the coil of 40.5kV voltage are met, and the problems in the background art are effectively solved.
The technical scheme of the invention is as follows: a novel high-capacity axial split transformer body structure comprises a first low-voltage coil, an end ring, an angle ring and a second low-voltage coil, wherein the first low-voltage coil on the upper part and the second low-voltage coil on the lower part are arranged on the axial low-voltage coil of the transformer body, and height adjusting structures are arranged on the first low-voltage coil and the second low-voltage coil; the end ring is arranged in the middle of the transformer body, the first low-voltage coil and the second low-voltage coil are arranged between the end ring and the angle ring, the angle ring is arranged on the inner side and the outer side of the second low-voltage coil, an oil duct is arranged in the middle of the second low-voltage coil, and transformer oil flows upwards from the oil duct and flows to the inner side and the outer side of the first low-voltage coil through the end ring.
And the heights of the low-voltage coil I and the low-voltage coil II are matched with the ampere-turn balance requirement.
The arrangement of the end ring and the angle ring increases the insulation distance and the size of a heat dissipation oil duct, and the insulation distance and the temperature rise requirement of the coil are matched with the insulation distance of 40.5kV voltage.
A novel high-capacity axial split transformer body heat dissipation method adopts the structure to dissipate heat.
The invention has the beneficial effects that: the axial low-voltage coil is divided into two independent coils, so that the height can be adjusted, the ampere-turn balance is ensured, and the short-circuit resistance of the product is improved; in the middle of the transformer body, an end ring and an angle ring are arranged between two independent low-voltage coils to increase the insulation distance and the size of a heat dissipation oil duct, so that the requirements of the insulation distance and the temperature rise of the coils of 40.5kV voltage are met.
Drawings
FIG. 1 is a schematic structural view of the present invention;
in the figure: the low-voltage coil I comprises a low-voltage coil I1, an end ring 2, an angle ring 3 and a low-voltage coil II 4.
Detailed Description
The technical solution of the present invention will be further described in detail with reference to the accompanying drawings and embodiments, which are preferred embodiments of the present invention. It is to be understood that the described embodiments are merely a subset of the embodiments of the invention, and not all embodiments; it should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A novel high-capacity axial split transformer body structure comprises a first low-voltage coil 1, an end ring 2, an angle ring 3 and a second low-voltage coil 4, wherein the first low-voltage coil 1 positioned at the upper part and the second low-voltage coil 4 positioned at the lower part are axially arranged on the body, and height adjusting structures are arranged on the first low-voltage coil 1 and the second low-voltage coil 4; the end ring 2 is arranged in the middle of the transformer body, the low-voltage coil I1 and the low-voltage coil II 4 are arranged between the end ring and the transformer body, the angle ring 3 is arranged on the inner side and the outer side of the low-voltage coil II 4, an oil duct is arranged in the middle of the low-voltage coil II 4, and transformer oil flows upwards from the oil duct and flows to the inner side and the outer side of the low-voltage coil I1 through the end ring 2.
The heights of the low-voltage coil I1 and the low-voltage coil II 4 are matched with the ampere-turn balance requirement.
The end ring 2 and the angle ring 3 are arranged to increase the insulation distance and the size of a heat dissipation oil channel, and the insulation distance and the temperature rise requirement of the coil are matched with those of 40.5kV voltage.
A novel high-capacity axial split transformer body heat dissipation method adopts the structure to dissipate heat.
In practical application, the axial low-voltage coil of the transformer body is divided into two independent coils: the height of each low-voltage coil can be adjusted, so that ampere-turn balance is guaranteed, and the short-circuit resistance of the product is improved; in the middle of the transformer body, an end ring 2 is arranged between two independent low-voltage coils, an angle ring 3 is arranged on the inner side and the outer side of a second 4 low-voltage coil, an oil duct is arranged in the middle of the second 4 low-voltage coil, transformer oil flows upwards from the middle oil duct and flows to the inner side and the outer side of the first 1 low-voltage coil through the end ring, the mode ensures the insulation distance between the first 1 low-voltage coil and the second 4 low-voltage coil, the size of a heat dissipation oil duct at the position is also ensured, and the requirements of the insulation distance of 40.5kV voltage and the.
Claims (4)
1. The utility model provides a novel large capacity axial split transformer ware body structure which characterized in that: the transformer body axial low-voltage coil comprises a first low-voltage coil (1), an end ring (2), an angle ring (3) and a second low-voltage coil (4), the first low-voltage coil (1) positioned at the upper part and the second low-voltage coil (4) positioned at the lower part are included in the transformer body axial low-voltage coil, and the first low-voltage coil (1) and the second low-voltage coil (4) are provided with height adjusting structures; the end ring (2) is arranged in the middle of the transformer body, the low-voltage coil I (1) and the low-voltage coil II (4) are arranged between the end ring and the corner ring (3), the corner ring is arranged on the inner side and the outer side of the low-voltage coil II (4), an oil duct is arranged in the middle of the low-voltage coil II (4), and transformer oil flows upwards from the oil duct in the middle and flows towards the inner side and the outer side of the low-voltage coil I (1) through the end ring (2).
2. The novel high-capacity axial split transformer body structure of claim 1, wherein: the heights of the low-voltage coil I (1) and the low-voltage coil II (4) are matched with the ampere-turn balance requirement.
3. The novel high-capacity axial split transformer body structure of claim 1, wherein: the end ring (2) and the angle ring (3) are arranged to increase the insulation distance and the size of a heat dissipation oil duct, and the insulation distance and the temperature rise requirement of the coil are matched with the insulation distance of 40.5 kV.
4. A novel method for dissipating heat of a body of a high-capacity axial split transformer, which is characterized in that the structure defined in claims 1-3 is adopted for dissipating heat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110300319.6A CN112951556A (en) | 2021-03-22 | 2021-03-22 | Novel high-capacity axial split transformer body structure and heat dissipation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110300319.6A CN112951556A (en) | 2021-03-22 | 2021-03-22 | Novel high-capacity axial split transformer body structure and heat dissipation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112951556A true CN112951556A (en) | 2021-06-11 |
Family
ID=76227383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110300319.6A Withdrawn CN112951556A (en) | 2021-03-22 | 2021-03-22 | Novel high-capacity axial split transformer body structure and heat dissipation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112951556A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5932117A (en) * | 1982-08-16 | 1984-02-21 | Hitachi Ltd | Winding of induction electric apparatus |
| EP2602799A1 (en) * | 2011-12-08 | 2013-06-12 | ABB Technology AG | Coil-fixture and oil-transformer |
| CN104752035A (en) * | 2015-04-14 | 2015-07-01 | 保定天威集团特变电气有限公司 | Part structure of 220 kV grade large-capacity dual-splitting power transformer |
| CN105632724A (en) * | 2016-03-29 | 2016-06-01 | 常州东芝舒电变压器有限公司 | Insulation structure between axially distributed coils |
| CN207165388U (en) * | 2017-09-13 | 2018-03-30 | 山东印鸿电气有限公司 | The loop construction of the double transformer with split windings of high voltage |
| CN209357600U (en) * | 2018-12-28 | 2019-09-06 | 常州思源东芝变压器有限公司 | Transformer insulation system between axial distributed coil |
| CN209561159U (en) * | 2019-03-23 | 2019-10-29 | 河南森源电气股份有限公司 | A kind of oil-immersed transformer |
-
2021
- 2021-03-22 CN CN202110300319.6A patent/CN112951556A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5932117A (en) * | 1982-08-16 | 1984-02-21 | Hitachi Ltd | Winding of induction electric apparatus |
| EP2602799A1 (en) * | 2011-12-08 | 2013-06-12 | ABB Technology AG | Coil-fixture and oil-transformer |
| CN104752035A (en) * | 2015-04-14 | 2015-07-01 | 保定天威集团特变电气有限公司 | Part structure of 220 kV grade large-capacity dual-splitting power transformer |
| CN105632724A (en) * | 2016-03-29 | 2016-06-01 | 常州东芝舒电变压器有限公司 | Insulation structure between axially distributed coils |
| CN207165388U (en) * | 2017-09-13 | 2018-03-30 | 山东印鸿电气有限公司 | The loop construction of the double transformer with split windings of high voltage |
| CN209357600U (en) * | 2018-12-28 | 2019-09-06 | 常州思源东芝变压器有限公司 | Transformer insulation system between axial distributed coil |
| CN209561159U (en) * | 2019-03-23 | 2019-10-29 | 河南森源电气股份有限公司 | A kind of oil-immersed transformer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204315332U (en) | A kind of novel dry-type transformer | |
| CN103310963B (en) | A kind of three-winding transformer method for designing being applicable to 35kV distributionization and building | |
| CN204792368U (en) | Novel power transformer | |
| CN203882775U (en) | Dry double-split amorphous alloy transformer | |
| CN112951556A (en) | Novel high-capacity axial split transformer body structure and heat dissipation method | |
| CN206758217U (en) | A kind of core for transformer | |
| CN202178139U (en) | Two-split rectifier transformer | |
| CN207719011U (en) | Four cracking H grade insulation dry transformers | |
| CN202905395U (en) | Coil structure of on-load-capacity-adjustment transformer | |
| CN209232563U (en) | A kind of three dimensional wound core natural grease Insulation Oil Transformer | |
| CN207852455U (en) | A kind of dry-type power transformer | |
| CN216597255U (en) | Transformer coil and three-phase three-column dry-type transformer | |
| CN204651145U (en) | A kind of novel dry transformer | |
| CN201918246U (en) | Main insulation structure of 220 KV three-phase power transformer with three coils | |
| CN209591768U (en) | A kind of band auxiliary winding transformer | |
| CN202422974U (en) | On-load voltage regulation transformer | |
| CN209418279U (en) | A wide range of pressure regulation intermediate transformer | |
| CN202977146U (en) | Single-phase superhigh-voltage large-capacity off-circuit-regulation alternating current step-up transformer | |
| CN102682977B (en) | A kind of ultra high voltage 1000kV step-down 220kV transformer | |
| CN202178138U (en) | Three-split rectifier transformer | |
| CN205104343U (en) | Photovoltaic power generation dry -type transformer | |
| CN203607230U (en) | Voltage and capacitance-regulating distribution transformer | |
| CN104779043A (en) | 220 kV de-icing rectifier transformer | |
| CN204857414U (en) | Oil formula transformer | |
| CN220065378U (en) | Dry-type transformer with good heat dissipation effect |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210611 |