CN116844830B - Heat dissipation air passage device of transformer winding - Google Patents
Heat dissipation air passage device of transformer winding Download PDFInfo
- Publication number
- CN116844830B CN116844830B CN202310983228.6A CN202310983228A CN116844830B CN 116844830 B CN116844830 B CN 116844830B CN 202310983228 A CN202310983228 A CN 202310983228A CN 116844830 B CN116844830 B CN 116844830B
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- Prior art keywords
- winding
- air passage
- heat dissipation
- supporting
- dissipation air
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- 238000004804 winding Methods 0.000 title claims abstract description 112
- 230000017525 heat dissipation Effects 0.000 title claims abstract description 86
- 230000008093 supporting effect Effects 0.000 claims abstract description 58
- 239000007769 metal material Substances 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 8
- 230000035882 stress Effects 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000011810 insulating material Substances 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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
- 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
- H01F27/08—Cooling; Ventilating
- H01F27/085—Cooling by ambient air
-
- 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
- H01F27/22—Cooling by heat conduction through solid or powdered fillings
-
- 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
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
- H01F27/306—Fastening or mounting coils or windings on core, casing or other support
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Coils Of Transformers For General Uses (AREA)
- Transformer Cooling (AREA)
Abstract
The invention belongs to the technical field of transformers, and particularly discloses a heat dissipation air passage device of a transformer winding, which comprises a plurality of heat dissipation air passage units which are distributed between an outer winding ring and an inner winding ring and are arranged in close proximity, wherein each heat dissipation air passage unit comprises a first support body for supporting the outer winding ring, two third support bodies which are abutted against the inner winding ring, and two second support bodies for connecting the first support bodies and the two third support bodies; the two second supporting bodies are respectively positioned at two ends of the first supporting body and are connected with the first supporting body at an obtuse angle; the first supporting bodies, the two second supporting bodies and the winding inner ring are enclosed to form a second air passage, and the adjacent two heat dissipation air passage units and the winding outer ring are enclosed to form a first air passage. On one hand, the invention has good supporting strength, and can ensure that the stress of the outer ring of the winding and the outer ring of the winding is uniform; on the other hand, the radiating air flue is reasonable in design, the contact area between the radiating air flue and the winding outer ring is sufficient, the radiating is uniform, and the radiating effect can be improved.
Description
Technical Field
The invention belongs to the technical field of transformers, and particularly relates to a heat dissipation air passage device of a transformer winding.
Background
All electromagnetic carriers in the transformer, such as iron cores, windings, leads, structural members capable of being linked by a leakage magnetic field and the like, are heating elements. The heat generated by the heating element not only can make the temperature of the heating element be too high, but also can make the insulating medium in the transformer be in a high-temperature state for a long time, so that the aging of the insulating medium is accelerated, the service life of the transformer is greatly reduced, and therefore, the arrangement of an effective heat dissipation air passage in the transformer is very important. The low-voltage transformer coil in the prior art generally adopts a layered coil, is generally a multilayer cylinder type, a heat dissipation air passage is arranged between the outside and the inside of the winding and is supported by a heat dissipation air passage device, however, two technical problems exist, firstly, insulating material parts on two sides of the winding supported by the heat dissipation air passage device are easy to arch, the arch part is hardly conductive to heat, so that the heat dissipation space of the air passage of the coil is occupied, and the phenomenon of local overhigh temperature rise of the winding occurs; secondly, the support stay of the heat dissipation air passage device is arranged along the interval between the inner part and the outer part of the winding, so that the coil is stressed unevenly to cause polygonal stress.
The Chinese patent document with publication number of CN102664089B discloses a heat dissipation air passage device of a transformer winding, which comprises an arc surface for supporting the outside of the winding, a plurality of aluminum support plates for pressing the inside of the winding and a plurality of upright posts for connecting the aluminum support plates and the arc surface, wherein the number of the aluminum support plates and the number of the upright posts are the same; the number of the aluminum supporting plates and the number of the stand columns are 3 respectively, and the stand columns are uniformly distributed along the arc surface. The patent provides a heat dissipation air passage device of a transformer winding, which ensures that the heat dissipation coefficient of the winding is not reduced, the heat dissipation effect is improved and the stress of the coil is uniform.
However, in order to make the stress of the coil uniform, the above patent is provided with a heat dissipation air passage device which is supported by a large area with the winding, and the devices are almost connected closely, so that the problem of nonuniform stress of the coil is solved. However, the larger area of support tends to affect the heat dissipation of the winding, which is easy to cause the problem of overhigh local temperature of the winding, so that the device still has a large room for improvement.
Disclosure of Invention
In order to solve the above technical problems, the present invention provides a heat dissipation air passage device of a transformer winding, which aims to solve or improve at least one of the above technical problems.
In order to achieve the above object, the present invention provides a heat dissipation air passage device for a transformer winding, comprising a plurality of heat dissipation air passage units distributed between a winding outer ring and a winding inner ring and arranged in close proximity, wherein each heat dissipation air passage unit comprises a first support body supporting the winding outer ring, two third support bodies abutting against the winding inner ring, and two second support bodies connecting the first support body and the two third support bodies; the two second supporting bodies are respectively positioned at two ends of the first supporting body and are connected with the first supporting body at an obtuse angle; and a second air passage is formed by encircling the first supporting body, the two second supporting bodies and the inner ring of the winding, and a first air passage is formed by encircling the adjacent two heat dissipation air passage units and the outer ring of the winding.
Preferably, the connection position of the first support body and the second support body is a round corner structure, and the connection position of the second support body and the third support body is a round corner structure.
Preferably, the height of the heat dissipation air channel unit is adapted to the height of the winding.
Preferably, the heat dissipation air passage unit is of an arc-shaped bent structure which is inclined upwards along the circumferential side of the inner ring of the winding.
Preferably, the first support body is provided with a plurality of hollowed-out parts.
Preferably, the first support body is an arc body, and the radian of the first support body is the same as the inner radian of the outer ring of the winding; the third support body is an arc body, and the radian of the third support body is the same as the outer radian of the inner ring of the winding.
Preferably, the first support body, the second support body, and the third support body are integrally formed.
Preferably, the first support, the second support, and the third support are each made of a non-magnetic metallic material.
The invention provides a heat dissipation air passage device of a transformer winding, which has good supporting strength on one hand and can ensure uniform stress of a winding outer ring and a winding outer ring; on the other hand, the radiating air flue is reasonable in design, the contact area between the radiating air flue and the winding outer ring is sufficient, the radiating is uniform, and the radiating effect can be improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application, illustrate and explain the application and are not to be construed as limiting the application. In the drawings:
fig. 1 is a schematic structural diagram of a heat dissipation air channel unit according to an embodiment of the present invention;
fig. 2 is a perspective view of the heat dissipation air channel unit of the present embodiment;
FIG. 3 is a diagram showing the effect of the heat dissipation air duct unit of the present embodiment assembled into a complete heat dissipation air duct device;
fig. 4 is a schematic view showing a usage state of the heat dissipation air channel device for a winding coil according to the present embodiment;
fig. 5 is a cross-sectional view of a heat dissipation air channel unit according to another embodiment of the present invention.
In the figure:
1. a heat dissipation air passage unit; 2. a first airway; 3. a second airway; 4. a winding outer ring; 5. a winding inner ring; 1a, a first heat dissipation air passage unit; 1b, a second heat dissipation air passage unit; 1c, a third heat dissipation air passage unit; 101. a first support body; 102. a second support body; 103. a third support; 104. and a hollowed-out part.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
The heat dissipation air path device of the transformer winding of the present invention is described below with reference to fig. 1 to 5.
Referring to fig. 1 and 2, fig. 1 and 2 show a schematic structural diagram of a heat dissipation air passage unit in the heat dissipation air passage device of the present invention, and the heat dissipation air passage device of the transformer winding of the present invention includes a plurality of heat dissipation air passage units 1 uniformly distributed between an outer winding ring 4 and an inner winding ring 5, wherein each heat dissipation air passage unit 1 is sequentially connected, and is spliced into a complete heat dissipation air passage device circumferentially around the inner winding ring 5, as shown in fig. 3.
As shown in fig. 1 and 2, the heat dissipation air channel unit 1 includes a first support body 101, a third support body 103, and a second support body 102 connecting the first support body 101 and the third support body 103, where the first support body 101 is supported on the inner side of the winding outer ring 4 in an abutting manner, and the height is the same as the height of the winding outer ring 4, the height refers to the axial distance of the winding outer ring 4, the surface of the first support body 101 abutting against the winding outer ring 4 is an arc surface, and the radian is the same as the inner radian of the winding outer ring 4; the two side edges of the first supporting body 101 are symmetrically bent with the second supporting body 102 towards the direction far away from the winding outer ring 4, the second supporting body 102 is arranged along the radial direction of the winding outer ring 4 and the winding inner ring 5, is supported at the gap position between the winding outer ring 4 and the winding inner ring 5, forms a support, and separates the first air passage 2 and the second air passage 3; the second supporting body 102 is close to one side of the winding inner ring 5, third supporting bodies 103 are symmetrically bent along the circumferential direction of the winding inner ring 5, the third supporting bodies 103 are propped and supported on the outer side of the winding inner ring 5, the height of the third supporting bodies is the same as the height of the winding inner ring 5, the height refers to the axial distance of the winding inner ring 5, the propping surface of the third supporting bodies 103 and the winding inner ring 5 is an arc surface, and the radian is the same as the outer radian of the winding inner ring 5.
As shown in fig. 3, when in use, the plurality of heat dissipation air passage units 1 are sequentially placed along the gap between the winding outer ring 4 and the winding inner ring 5, the end faces of the third supporting bodies 103 of two adjacent heat dissipation air passage units 1 are sequentially connected, for the purpose of description, three adjacent heat dissipation air passage units are defined as a first heat dissipation air passage unit 1a, a second heat dissipation air passage unit 1b and a third heat dissipation air passage unit 1c respectively, wherein the first heat dissipation air passage unit 1a is positioned at the left side of the second heat dissipation air passage unit 1b, the third heat dissipation air passage unit 1c is positioned at the right side of the second heat dissipation air passage unit 1b, the third supporting body 103 at the left end of the second heat dissipation air passage unit 1b is connected with the third supporting body 103 at the right end of the first heat dissipation air passage unit 1a, and the third supporting body 103 at the right end of the second heat dissipation air passage unit 1b is connected with the third supporting body 103 at the left end of the third heat dissipation air passage unit 1 c. The whole heat dissipation air passage device is supported in a gap between the winding outer ring 4 and the winding inner ring 5, as shown in fig. 4, the heat dissipation air passage device divides the gap between the winding outer ring 4 and the winding inner ring 5 into a plurality of independent air passages, for the purpose of description, the heat dissipation air passage taking the inner side surface of the winding outer ring 4 as a part of the air passage is defined as a first air passage 2, the heat dissipation air passage taking the outer side surface of the winding inner ring 5 as a part of the air passage is defined as a second air passage 3, and the first air passage 2 and the second air passage 3 are arranged in a staggered manner at intervals, so that the winding outer ring 4 and the winding inner ring 5 are communicated with the heat dissipation air passage at intervals.
According to the further optimization technical scheme, the included angle between the first supporting body 101 and the second supporting body 102 is larger than 90 degrees, namely the included angle between the first supporting body 101 and the second supporting body 102 is an obtuse angle, so that the first supporting body 101 and the two second supporting bodies 102 at two sides travel a wide-opening general 'nearly' shape structure, after the radiating air passage unit 1 of the structure is placed between the winding outer ring 4 and the winding inner ring 5, better support can be formed, and meanwhile, the radiating air passage has a contact surface with the winding outer ring 4 or the winding inner ring 5 in a larger area, and heat dissipation is facilitated; specifically, in the first air passage 2, the periphery of the air passage is respectively provided with an inner side surface of the winding outer ring 4, two second supporting bodies 102 and a third supporting body 103 supported outside the winding inner ring 5, and the width of the inner side surface of the winding outer ring 4 is larger than that of the third supporting body 103, namely the first air passage 2 has a contact surface with the winding outer ring 4 with a larger area; similarly, in the second air passage 3, the air passage has a contact surface with the winding inner ring 5 in a larger area.
Further optimizing technical scheme, first supporter 101 and second supporter 102 hookup location are fillet structure, and second supporter 102 is the fillet structure with third supporter 103 hookup location equally, and fillet structure's design makes first air flue 2 and second air flue 3 possess respectively with winding outer lane 4 and winding inner lane 5 bigger area's contact surface, simultaneously, non-contact surface (opposite side) is the fillet design, is favorable to the circulation of air current more, compares in right angle design, and the air current is more smooth and easy, and the radiating effect is better.
According to a further optimized technical scheme, as shown in fig. 2, the heat dissipation air passage unit 1 is not of a straight up-down structure, the middle part of the heat dissipation air passage unit is provided with a curved waist, a curved path is an arc line which winds the outer circle of the winding inner ring 5, the arc line is provided with synchronous displacement along the axial direction and the radial direction, namely, is not vertical and is not horizontal, the heat dissipation air passage unit 1 with a certain spiral radian appearance is designed, after being spliced into a heat dissipation air passage device, the heat dissipation air passage unit 1 can be provided with spiral upward heat dissipation air passages, namely, all the first air passages 2 and the second air passages 3 are spiral curved passages with the same radian and the same direction, when air flows, due to the change of a certain bending angle, the air flows through the curved air passages, and the effect of centrifugal force is exerted, so that the air flow speed is increased, and the principle is similar to that of a centrifugal fan and a turbine.
Further optimizing the technical scheme, as shown in fig. 5, a plurality of hollowed-out parts 104 are opened on the first supporting body 101, and then in the second air flue 3, a contact surface between a part of the hollowed-out parts and the winding outer ring 4 is provided, so that the heat dissipation effect on the winding outer ring 4 is increased.
Further optimizing the technical scheme, the first supporting body 101, the second supporting body 102 and the third supporting body 103 are integrally formed, and are made of aluminum or other non-magnetized materials.
Compared with the prior art, the heat dissipation air passage device of the transformer winding has stronger supporting effect on the structure, can avoid the problem of arched deformation of insulating materials and ensures that the stress of the winding outer ring and the winding outer ring is uniform; in the aspect of air passage design, the heat dissipation air passage formed by the device has larger contact area with the winding outer ring and the winding outer ring, so that the heat dissipation air passage is sufficiently and uniformly arranged while the sufficient supporting strength is ensured, and the centrifugal acceleration spiral air passage is utilized, so that the air flow speed is increased, and the heat dissipation effect can be improved.
In the description of the present invention, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
The above embodiments are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solutions of the present invention should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.
Claims (6)
1. The heat dissipation air passage device of the transformer winding is characterized by comprising a plurality of heat dissipation air passage units (1) which are distributed between a winding outer ring (4) and a winding inner ring (5) and are arranged in close proximity, wherein each heat dissipation air passage unit (1) comprises a first supporting body (101) supporting the winding outer ring (4), two third supporting bodies (103) abutting against the winding inner ring (5) and two second supporting bodies (102) connecting the first supporting body (101) and the two third supporting bodies (103); the two second supporting bodies (102) are respectively positioned at two ends of the first supporting body (101) and are connected with the first supporting body (101) at an obtuse angle; the first supporting body (101), the two second supporting bodies (102) and the winding inner ring (5) are surrounded to form a second air passage (3), and the two adjacent heat dissipation air passage units (1) and the winding outer ring (4) are surrounded to form a first air passage (2); the height of the heat dissipation air passage unit (1) is matched with the height of the winding; the heat dissipation air passage unit (1) is of an arc-shaped bent structure which is inclined upwards along the peripheral side of the winding inner ring (5), and the first air passage (2) and the second air passage (3) are spiral bent passages with the same radian and the same direction.
2. The heat dissipation air channel device of a transformer winding according to claim 1, wherein a connection position of the first support body (101) and the second support body (102) is a rounded structure, and a connection position of the second support body (102) and the third support body (103) is a rounded structure.
3. The heat dissipation air channel device of a transformer winding according to claim 1, wherein the first supporting body (101) is provided with a plurality of hollowed-out parts (104).
4. A heat dissipating airway device for a transformer winding according to claim 1, characterized in that the first support body (101) is a circular arc body having the same arc as the inner arc of the winding outer ring (4); the third supporting body (103) is an arc body, and the radian of the third supporting body is the same as that of the outer circle of the winding inner ring (5).
5. The heat dissipation airway device of a transformer winding according to claim 1, characterized in that the first support (101), the second support (102), the third support (103) are integrally formed.
6. The heat dissipation airway device of a transformer winding according to claim 5, characterized in that the first support (101), the second support (102), the third support (103) are all made of a non-magnetized metallic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310983228.6A CN116844830B (en) | 2023-08-07 | 2023-08-07 | Heat dissipation air passage device of transformer winding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310983228.6A CN116844830B (en) | 2023-08-07 | 2023-08-07 | Heat dissipation air passage device of transformer winding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116844830A CN116844830A (en) | 2023-10-03 |
| CN116844830B true CN116844830B (en) | 2024-03-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310983228.6A Active CN116844830B (en) | 2023-08-07 | 2023-08-07 | Heat dissipation air passage device of transformer winding |
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| Country | Link |
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| CN (1) | CN116844830B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102610374A (en) * | 2012-04-16 | 2012-07-25 | 宁夏银利电器制造有限公司 | Transformer or reactor winding with ventilation and heat dissipation channels |
| CN102664089A (en) * | 2012-05-30 | 2012-09-12 | 蒋忠金 | Radiating airway devices for transformer winding |
| CN104575981A (en) * | 2013-10-29 | 2015-04-29 | 台达电子企业管理（上海）有限公司 | Conductive structure for electromagnetic assembly and electromagnetic assembly |
| CN208271690U (en) * | 2018-06-13 | 2018-12-21 | 上海匡兴机电有限公司 | The double vertical air plenums of transformer are from cooler |
| CN215731252U (en) * | 2021-09-08 | 2022-02-01 | 浙江电力变压器有限公司 | Dry-type transformer foil winding air flue structure |
| WO2022148124A1 (en) * | 2021-01-11 | 2022-07-14 | 海鸿电气有限公司 | Cast dry-type transformer and fabrication method therefor |
-
2023
- 2023-08-07 CN CN202310983228.6A patent/CN116844830B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102610374A (en) * | 2012-04-16 | 2012-07-25 | 宁夏银利电器制造有限公司 | Transformer or reactor winding with ventilation and heat dissipation channels |
| CN102664089A (en) * | 2012-05-30 | 2012-09-12 | 蒋忠金 | Radiating airway devices for transformer winding |
| CN104575981A (en) * | 2013-10-29 | 2015-04-29 | 台达电子企业管理（上海）有限公司 | Conductive structure for electromagnetic assembly and electromagnetic assembly |
| CN208271690U (en) * | 2018-06-13 | 2018-12-21 | 上海匡兴机电有限公司 | The double vertical air plenums of transformer are from cooler |
| WO2022148124A1 (en) * | 2021-01-11 | 2022-07-14 | 海鸿电气有限公司 | Cast dry-type transformer and fabrication method therefor |
| CN215731252U (en) * | 2021-09-08 | 2022-02-01 | 浙江电力变压器有限公司 | Dry-type transformer foil winding air flue structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116844830A (en) | 2023-10-03 |
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