CN218826554U - Dry-type transformer coil heat radiation structure - Google Patents
Dry-type transformer coil heat radiation structure Download PDFInfo
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- CN218826554U CN218826554U CN202223472888.8U CN202223472888U CN218826554U CN 218826554 U CN218826554 U CN 218826554U CN 202223472888 U CN202223472888 U CN 202223472888U CN 218826554 U CN218826554 U CN 218826554U
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Abstract
The utility model discloses a coil heat dissipation structure of a dry-type transformer, which comprises an inner coil and an outer coil which are coaxially arranged from inside to outside, wherein an inner heat conduction adhesive layer is arranged on the outer annular surface of the inner coil, an outer heat conduction adhesive layer is arranged on the inner annular surface of the outer coil, a heat dissipation space is arranged between the inner heat conduction adhesive layer and the outer heat conduction adhesive layer, and a fan is arranged at the top of the heat dissipation space; insulating cushion blocks are uniformly arranged between the inner heat-conducting adhesive layer and the outer heat-conducting adhesive layer in the heat-radiating space along the circumferential direction, axial-flow heat-radiating channels parallel to the axis of the inner coil are formed between the adjacent insulating cushion blocks, and a plurality of circumferential heat-radiating channels communicated with the axial-flow heat-radiating channels are arranged on the insulating cushion blocks; the utility model discloses not only can carry out high-efficient heat dissipation to the inside coil of dry-type transformer, can also synthesize the heat dissipation to the insulating part between the coil simultaneously, further promote whole dry-type transformer's radiating effect.
Description
Technical Field
The utility model belongs to the technical field of dry-type transformer coil, concretely relates to dry-type transformer coil heat radiation structure.
Background
The dry type transformer consists of an iron core consisting of silicon steel sheets and a coil poured by epoxy resin, wherein the coil part consists of a low-voltage coil and a high-voltage coil, and an insulating part is arranged between the high-voltage coil and the low-voltage coil to increase electrical insulation. During long-time operation of the dry-type transformer, especially during overload operation, the coil inside the dry-type transformer generates heat. Because the dry-type transformer does not have insulating oil as a heat dissipation and cooling medium inside, and the internal space of the dry-type transformer is narrow and compact, the air circulation is poor, and the heat emitted by the coil inside the dry-type transformer is difficult to be efficiently dissipated. Although the existing dry-type transformer adopts the air holes arranged on the coil or the fan arranged in the transformer to improve the heat dissipation efficiency of the coil, the heat dissipation effect is limited. The reason for this is that since the insulating material is densely arranged between the coils, the insulating material located between the coils starts to generate heat even after the coils generate heat. The existing dry-type transformer radiating structure only considers the radiation of the coils, but does not comprehensively consider the radiation of the insulating parts between the coils, so that the coil radiating effect of the existing dry-type transformer is not ideal all the time. Consequently, the radiating effect that exists to current dry-type transformer coil heat radiation structure is unsatisfactory, is difficult to synthesize radiating defect to the insulating part between the coil, the utility model discloses a dry-type transformer coil heat radiation structure.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a dry-type transformer coil heat radiation structure can carry out the high-efficient heat dissipation of synthesizing to the coil of dry-type transformer and the insulating part between the coil.
The utility model discloses a following technical scheme realizes:
a coil heat dissipation structure of a dry-type transformer comprises an inner coil and an outer coil which are coaxially arranged from inside to outside, wherein an inner heat conduction adhesive layer is arranged on the outer ring surface of the inner coil, an outer heat conduction adhesive layer is arranged on the inner ring surface of the outer coil, a heat dissipation space is arranged between the inner heat conduction adhesive layer and the outer heat conduction adhesive layer, and a fan is arranged at the top of the heat dissipation space; the heat dissipation structure is characterized in that insulating cushion blocks are evenly arranged between the inner heat-conducting adhesive layer and the outer heat-conducting adhesive layer in the heat dissipation space along the circumferential direction, axial flow heat dissipation channels parallel to the axis of the inner coil are formed between the adjacent insulating cushion blocks, and a plurality of annular heat dissipation channels communicated with the axial flow heat dissipation channels are arranged on the insulating cushion blocks.
Constitute the heat dissipation space between the interior anchor ring of the outer anchor ring of interior coil and outer coil, can transmit the heat that the interior coil produced to the heat dissipation space fast through setting up the interior heat-conducting adhesive layer on the outer anchor ring of interior coil, can transmit the heat that the outer coil produced to the heat dissipation space fast through setting up the outer heat-conducting adhesive layer on the inner anchor ring of outer coil, and then supplementary interior coil promotes heat transfer efficiency with outer coil. The airflow block flows through the axial flow heat dissipation channel under the action of the fan, and heat dissipated to the heat dissipation space through the inner heat conduction adhesive layer and the outer heat conduction adhesive layer is rapidly taken away by airflow flowing through the axial flow heat dissipation channel in the axial direction. Simultaneously, for the mobility of further reinforcing air current, can communicate adjacent axial flow heat dissipation way through the hoop heat dissipation way that sets up on insulating cushion, and then make the air current further flow to other axial flow heat dissipation ways through the inside hoop heat dissipation way of insulating cushion, further promoted the radiating effect to inner coil and outer coil.
In order to realize better the utility model discloses, it is further, insulating pad is provided with a plurality of rings heat dissipation way along the linear interval of axis direction of interior coil, the ring heat dissipation is said and is provided with loudspeaker form opening with the one end that axial compressor heat dissipation says and is connected.
In order to realize better the utility model discloses, it is further, the slope setting is said in hoop heat dissipation, and lie in the opposite direction of slope that the hoop heat dissipation on same height was said on two adjacent insulating cushion blocks.
In order to realize better the utility model discloses, it is further, the inside that the hoop heat dissipation was said is provided with guide fin, guide fin's incline direction is the same with the incline direction that the hoop heat dissipation was said.
In order to better realize the utility model, furthermore, the inclination angle of the circumferential heat dissipation channel is 30-45 degrees.
In order to realize better the utility model discloses, it is further, the inside that axial flow heat dissipation said is provided with the guide vane, the guide vane corresponds the ring and says the opening downward sloping setting to heat dissipation.
In order to better realize the utility model, furthermore, the inclination angle of the wind guide sheet is 30-45 degrees.
In order to realize better the utility model discloses, it is further, the interior coil is provided with the mount with the top of outer coil, the bottom of mount be provided with respectively with the interior snap ring groove of the top joint of interior coil and with the outer snap ring groove of the top joint of outer coil, be provided with the wind gap that communicates with the heat dissipation space on the mount, the top in wind gap is provided with the fan.
In order to realize better the utility model discloses, it is further, it is provided with supplementary thermovent to correspond axial compressor heat dissipation way on the mount.
Compared with the prior art, the utility model, have following advantage and beneficial effect:
the utility model has the advantages that the inner heat dissipation glue layer is arranged on the outer ring surface of the inner coil, the outer heat dissipation glue layer is arranged on the inner ring surface of the outer coil, the heat dissipation efficiency of the inner coil and the outer coil is improved through the inner heat dissipation glue layer and the outer heat dissipation glue layer, and the heat generated by the coil can be quickly dissipated into the heat dissipation space; meanwhile, the insulation cushion blocks are circumferentially arranged at intervals in the heat dissipation space between the inner coil and the outer coil, so that the isolation between the coils is realized, enough axial flow heat dissipation channels are reserved to match with air flow generated by a fan to quickly take away heat in the heat dissipation space, and the heat dissipation effect of the coils is improved; furthermore, in order to comprehensively dissipate heat of the insulating cushion block, the annular heat dissipation channel communicated with the axial flow heat dissipation channel is arranged on the insulating cushion block, so that the air flow can dissipate heat of the insulating cushion block through the annular heat dissipation channel, the circulation of the air flow is improved, and the heat dissipation effect of the dry-type transformer coil is further improved.
Drawings
FIG. 1 is a schematic view of an inner coil and an outer coil assembled;
FIG. 2 is a schematic view of the connection between an axial flow heat dissipation channel and a circumferential heat dissipation channel;
FIG. 3 is a sectional view of the interior of the coil heat dissipation structure;
fig. 4 is a schematic structural view of the circumferential heat dissipation channel.
Wherein: 1-an inner coil; 2-outer coil; 3-inner heat conducting glue layer; 4-outer heat conducting glue layer; 5-insulating cushion blocks; 6-axial flow heat dissipation channel; 7-annular heat dissipation channels; 8-a fan; 9-guide fins; 10-a wind-guiding sheet; 11-a fixing frame.
Detailed Description
Example 1:
as shown in fig. 1 and 2, the coil heat dissipation structure of the dry-type transformer in this embodiment includes an inner coil 1 and an outer coil 2 that are coaxially arranged from inside to outside, an inner heat-conducting adhesive layer 3 is arranged on an outer annular surface of the inner coil 1, an outer heat-conducting adhesive layer 4 is arranged on an inner annular surface of the outer coil 2, a heat dissipation space is arranged between the inner heat-conducting adhesive layer 3 and the outer heat-conducting adhesive layer 4, and a fan 8 is arranged at the top of the heat dissipation space; the heat dissipation structure is characterized in that insulating cushion blocks 5 are evenly arranged between the inner heat-conducting adhesive layer 3 and the outer heat-conducting adhesive layer 4 in the heat dissipation space along the circumferential direction, axial flow heat dissipation channels 6 parallel to the axis of the inner coil 1 are formed between the adjacent insulating cushion blocks 5, and a plurality of annular heat dissipation channels 7 communicated with the axial flow heat dissipation channels 6 are arranged on the insulating cushion blocks 5.
The inner heat-conducting glue layer 3 is directly laid on the outer ring surface of the inner coil 1, and the outer heat-conducting glue layer 4 is directly laid on the inner ring surface of the outer coil 2. Constitute the heat dissipation space between the outer anchor ring of interior coil 1 and the interior anchor ring of outer coil 2 for interior coil 1 and outer coil 2 dispel the heat fast, simultaneously through having set up interior thermal adhesive layer 3 can be fast with the heat transfer of interior coil 1 to the heat dissipation space, through having set up outer thermal adhesive layer 4 can be fast with the heat transfer of outer coil 2 to the heat dissipation space, improved the radiating efficiency of interior coil 1 with outer coil 2 greatly.
In order to enhance the air circulation inside the coil, the fan 8 conveys air flow towards the heat dissipation space, the air flow passes through the axial flow heat dissipation channel 6 formed between the adjacent insulating cushion blocks 5 along the axis direction of the coil, and then the heat on the inner heat conduction glue layer 3 and the outer heat conduction glue layer 4 is rapidly taken away to realize high-efficiency heat dissipation and cooling of the inner coil 1 and the outer coil 2. Meanwhile, after a long-time load operation, the insulating spacers 5 located between the inner coil 1 and the outer coil 2 also generate heat. Through set up hoop heat dissipation way 7 on insulating pad 5, and then say 7 through hoop heat dissipation and say 6 intercommunications with two adjacent axial flows heat dissipation for the air current also can say 7 entering adjacent axial flows heat dissipation way 6 through hoop heat dissipation when 6 are said through the axial flows heat dissipation simultaneously, not only realizes the heat dissipation cooling to insulating pad 5, has strengthened the mobility of air current simultaneously, has further promoted the heat dissipation cooling effect to the coil.
Example 2:
the present embodiment is further optimized on the basis of the above embodiment 1, as shown in fig. 1 and fig. 4, the insulating pad 5 is provided with a plurality of annular heat dissipation channels 7 at linear intervals along the axial direction of the inner coil 1, and one end of each of the annular heat dissipation channels 7, which is connected to the axial flow heat dissipation channel 6, is provided with a trumpet-shaped opening.
The interval less than or equal to 200mm between the adjacent hoop heat dissipation say 7, and the hoop heat dissipation say 7 and the tip that the axial compressor heat dissipation says 6 is connected is provided with tubaeform opening, just guides the air current through tubaeform opening, makes the air current can get into the hoop heat dissipation say 7 more easily, and then promotes the heat dissipation to insulating cushion 5, and the hoop heat dissipation is said 7 and can also incline the setting by the level setting.
Other parts of this embodiment are the same as embodiment 1, and thus are not described again.
Example 3:
the present embodiment is further optimized based on the above embodiment 1 or 2, as shown in fig. 4, the circumferential heat dissipation channels 7 are obliquely arranged, and the oblique directions of the circumferential heat dissipation channels 7 located at the same height on two adjacent insulation blocks 5 are opposite.
The downward slope of the annular heat dissipation channel 7 is arranged, so that the air flow entering the annular heat dissipation channel 7 generally flows along the direction from top to bottom, and the conflict between the air flow direction flowing out of the annular heat dissipation channel 7 and the air flow direction from top to bottom in the axial flow heat dissipation channel 6 is avoided so as to influence the heat dissipation effect. Meanwhile, the inclined directions of the annular heat dissipation channels 7 on the same height on the two adjacent insulating cushion blocks 5 are opposite to each other to form splayed distribution, so that air flow in the axial flow heat dissipation channel 6 between the two annular heat dissipation channels 7 distributed in the splayed mode can uniformly enter the two annular heat dissipation channels 7, and turbulent flow is avoided.
The inside of the annular heat dissipation channel 7 is provided with guide fins 9, and the inclination direction of the guide fins 9 is the same as that of the annular heat dissipation channel 7. The guide fins 9 are made of heat insulating materials or materials with low heat conductivity, and the guide fins 9 are prevented from heating when air flow passes through the annular heat dissipation channel 7. Through set up guide fin 9 in hoop heat dissipation way 7, lead through guide fin 9 to the air current through hoop heat dissipation way 7 promptly for the inside air current of hoop heat dissipation way 7 flows according to the orientation from last to down, avoids appearing against the current. It should be noted that the guide fins 9 cannot completely block the annular heat dissipation channel 7, and the area of the guide fins 9 is less than or equal to one third of the sectional area of the annular heat dissipation channel 7.
Further, the inclination angle of the annular heat dissipation channel 7 is 30-45 degrees.
The rest of this embodiment is the same as embodiment 1 or 2, and therefore, the description thereof is omitted.
Example 4:
in this embodiment, a further optimization is performed on the basis of any one of the embodiments 1 to 3, as shown in fig. 2 to 4, a wind-guiding sheet 10 is disposed inside the axial flow heat dissipation channel 6, and the wind-guiding sheet 10 is disposed in a manner that it is inclined downward toward an opening of the heat dissipation channel 7 corresponding to the ring.
The air guide sheet 10 is made of a heat insulating material or a material with low heat conductivity, so that the temperature in the axial flow heat dissipation channel 6 is prevented from rising due to the fact that the air guide sheet 10 absorbs a large amount of heat. The air guide sheet 10 is arranged corresponding to the opening of the annular heat dissipation channel 7 and is inclined downwards. When the airflow in the axial flow heat dissipation channel 6 passes through the air guiding sheet 10 from top to bottom, a part of the airflow flows into the annular heat dissipation channel 7 under the guiding action of the air guiding sheet 10, and the other part of the airflow still flows along the axial flow heat dissipation channel 6.
Further, the inclination angle of the wind guide sheet 10 is 30-45 degrees.
Other parts of this embodiment are the same as any of embodiments 1 to 3, and thus are not described again.
Example 5:
this embodiment is further optimized on the basis of any one of the above embodiments 1-4, as shown in fig. 2-4, the top of the inner coil 1 and the top of the outer coil 2 are provided with a fixing frame 11, the bottom of the fixing frame 11 is respectively provided with an inner snap ring groove clamped with the top of the inner coil 1 and an outer snap ring groove clamped with the top of the outer coil 2, the fixing frame 11 is provided with an air port communicated with the heat dissipation space, and the top of the air port is provided with a fan 8.
The inner snap ring groove is arranged corresponding to the top of the inner coil 1, and the inner snap ring groove is directly correspondingly clamped with the top of the inner coil 1 to fix the inner coil 1. The outer snap ring groove is arranged corresponding to the top of the outer coil 2, and the outer snap ring groove is directly clamped with the top of the outer coil 2 to fix the outer coil 2. The top of mount 11 is provided with the fan installation cavity, and the fan 8 is installed in the rotation in the fan installation cavity. Meanwhile, in order to prevent the air flow generated by the fan 8 from entering the heat dissipation space, the fixing frame 11 is provided with an air opening communicated with the heat dissipation space and an auxiliary heat dissipation opening communicated with the axial flow heat dissipation channel 6, so that the air flow generated by the fan 8 can smoothly enter the heat dissipation space and the axial flow heat dissipation channel 6.
Other parts of this embodiment are the same as any of embodiments 1 to 4, and thus are not described again.
The above is only the preferred embodiment of the present invention, not to the limitation of the present invention in any form, all the technical matters of the present invention all fall into the protection scope of the present invention to any simple modification and equivalent change of the above embodiments.
Claims (9)
1. A coil heat dissipation structure of a dry-type transformer comprises an inner coil (1) and an outer coil (2) which are coaxially arranged from inside to outside, and is characterized in that an inner heat conduction adhesive layer (3) is arranged on the outer ring surface of the inner coil (1), an outer heat conduction adhesive layer (4) is arranged on the inner ring surface of the outer coil (2), a heat dissipation space is arranged between the inner heat conduction adhesive layer (3) and the outer heat conduction adhesive layer (4), and a fan (8) is arranged at the top of the heat dissipation space; lie in evenly being provided with insulating cushion (5) along circumference between interior heat-conducting adhesive layer (3) and outer heat-conducting adhesive layer (4) in the heat dissipation space, constitute axial compressor heat dissipation way (6) that are on a parallel with inner coil (1) axis between adjacent insulating cushion (5), be provided with a plurality of hoop heat dissipation ways (7) that communicate with axial compressor heat dissipation way (6) on insulating cushion (5).
2. The coil heat dissipation structure of the dry-type transformer according to claim 1, wherein the insulating pad (5) is provided with a plurality of annular heat dissipation channels (7) at linear intervals along the axial direction of the inner coil (1), and one end of each annular heat dissipation channel (7) connected with the axial flow heat dissipation channel (6) is provided with a trumpet-shaped opening.
3. The coil heat dissipation structure of the dry-type transformer according to claim 2, wherein the circumferential heat dissipation channels (7) are arranged in an inclined manner, and the inclination directions of the circumferential heat dissipation channels (7) at the same height on two adjacent insulating spacers (5) are opposite.
4. A dry-type transformer coil heat dissipation structure as claimed in claim 3, wherein the annular heat dissipation channel (7) is internally provided with guide fins (9), and the inclination direction of the guide fins (9) is the same as the inclination direction of the annular heat dissipation channel (7).
5. A dry-type transformer coil heat dissipation structure as claimed in claim 4, wherein the angle of inclination of the circumferential heat dissipation channel (7) is 30 ° -45 °.
6. The coil heat dissipation structure of the dry-type transformer according to any one of claims 1 to 5, wherein the axial flow heat dissipation channel (6) is internally provided with a wind-guiding sheet (10), and the wind-guiding sheet (10) is arranged in a manner of being inclined downwards corresponding to the opening of the annular heat dissipation channel (7).
7. The coil heat dissipation structure of the dry-type transformer according to claim 6, wherein the inclination angle of the air guiding sheet (10) is 30-45 °.
8. The heat dissipation structure of the dry-type transformer coil according to any one of claims 1 to 5, wherein a fixing frame (11) is disposed on the top of the inner coil (1) and the top of the outer coil (2), an inner snap ring groove clamped with the top of the inner coil (1) and an outer snap ring groove clamped with the top of the outer coil (2) are respectively disposed on the bottom of the fixing frame (11), a wind gap communicated with the heat dissipation space is disposed on the fixing frame (11), and a fan (8) is disposed on the top of the wind gap.
9. A dry-type transformer coil heat dissipation structure as claimed in claim 8, wherein the fixing frame (11) is provided with an auxiliary heat dissipation opening corresponding to the axial flow heat dissipation channel (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223472888.8U CN218826554U (en) | 2022-12-26 | 2022-12-26 | Dry-type transformer coil heat radiation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223472888.8U CN218826554U (en) | 2022-12-26 | 2022-12-26 | Dry-type transformer coil heat radiation structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218826554U true CN218826554U (en) | 2023-04-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223472888.8U Active CN218826554U (en) | 2022-12-26 | 2022-12-26 | Dry-type transformer coil heat radiation structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218826554U (en) |
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2022
- 2022-12-26 CN CN202223472888.8U patent/CN218826554U/en active Active
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