CN115023775A - Novel dry-type transformer - Google Patents
Novel dry-type transformer Download PDFInfo
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- CN115023775A CN115023775A CN202280001421.9A CN202280001421A CN115023775A CN 115023775 A CN115023775 A CN 115023775A CN 202280001421 A CN202280001421 A CN 202280001421A CN 115023775 A CN115023775 A CN 115023775A
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- 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
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- 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
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- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transformer Cooling (AREA)
Abstract
The invention discloses a novel dry-type transformer, which comprises a transformer body and a shell; the transformer body comprises a coil; the shell is provided with a longitudinal ventilation channel, the transformer body is positioned in the ventilation channel, the coil is provided with a longitudinal coil air channel, the shell is provided with an air inlet and an air outlet, the air inlet and the air outlet are both communicated with the ventilation channel, the air inlet is positioned below the transformer body, the air outlet is positioned above the transformer body, and the working temperature of the lower part of the coil is higher than that of the upper part of the coil; utilize the chimney effect, form the air current at the ventiduct, make the air current pass through the fore-and-aft coil wind channel in the coil, can take away the heat that the coil produced better, cool down the coil fast, promoted transformer heat-sinking capability.
Description
Technical Field
The invention relates to the field of transformers, in particular to a novel dry-type transformer.
Background
The transformer can produce a large amount of heat in the course of working, when the heat can not be dissipated in time, then the temperature in the transformer shell rises. When the temperature of the transformer is too high, the internal parts of the transformer can be damaged.
Disclosure of Invention
The present invention is directed to solve at least one of the problems of the prior art, and to provide a novel dry-type transformer.
The technical scheme adopted by the invention for solving the problems is as follows:
a novel dry-type transformer, comprising:
a transformer body including a coil;
the transformer comprises a shell, a transformer body and a ventilation duct, wherein the shell is provided with a longitudinal ventilation duct, the transformer body is positioned in the ventilation duct, the shell is provided with an air inlet and an air outlet, the air inlet and the air outlet are both communicated with the ventilation duct, the air inlet is positioned below the transformer body, and the air outlet is positioned above the transformer body so as to form a chimney effect; the coil is provided with a longitudinal coil air duct; the lower portion of the coil is at a higher operating temperature than the upper portion of the coil to enhance the chimney effect.
Further, the shell is provided with an air outlet part, and the ventilation channel comprises an air outlet pipeline arranged in the air outlet part; the tail end of the air outlet pipeline is the air outlet, and the air outlet pipeline gradually narrows towards the air outlet.
Furthermore, a partition plate is arranged between the shell and the transformer body, and a longitudinal first ventilation gap is formed between the partition plate and the transformer body.
Further, the air duct includes an air inlet duct located at a lower portion of the housing; the head end of the air inlet pipeline is the air inlet.
Further, the air inlet pipelines are multiple; the air inlet pipelines are arranged around the transformer body, and the air outlet directions of the air inlet pipelines face the transformer body.
Furthermore, the outer surface of the coil is provided with a transverse annular air passage.
Furthermore, the annular air passage has a plurality of circles, the plurality of circles are arranged along the annular air passage at intervals from bottom to top, and the plurality of circles are gradually increased from bottom to top in the width of the annular air passage.
Further, the number of turns of the coil is gradually reduced from bottom to top, and the section of the conductor of the coil is gradually increased from bottom to top.
Further, the coil comprises a high-voltage coil and a low-voltage coil, the high-voltage coil surrounds the outer side of the low-voltage coil, and the coil air duct comprises a first coil air duct formed between the high-voltage coil and the low-voltage coil.
Further, the coil air duct also comprises a second longitudinal coil air duct and a third longitudinal coil air duct; the second coil duct is formed inside the low-voltage coil, and the third coil duct is formed inside the high-voltage coil.
The scheme at least has the following beneficial effects: arranging a transformer body in a longitudinal ventilation channel, wherein an air inlet is arranged below the transformer body, and an air outlet is arranged above the transformer body; when the transformer body works, heat is generated to heat the surrounding air; the hot air in the air duct is enabled to rise by utilizing the chimney effect, air flow is formed in the air duct, and cold air enters the air duct from the air inlet at the lower part and leaves the air duct from the air outlet at the upper part; in addition, the air flow passes through a longitudinal coil air duct in the coil, so that heat generated by the coil can be better carried away, and the coil is quickly cooled; the air flow formed by the chimney effect takes away the heat generated by the operation of the transformer body, and cools and dissipates the heat of the transformer body, so that the transformer body can be continuously kept in a normal operating temperature range, and the heat dissipation capacity of the transformer is improved; the working temperature of the lower part of the coil is higher than that of the upper part of the coil, so that the chimney effect is enhanced, and the heat dissipation capacity of the transformer is improved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The invention is further illustrated with reference to the following figures and examples.
Fig. 1 is an external structural view of a novel dry-type transformer according to an embodiment of the present invention;
fig. 2 is an internal structure view of a novel dry-type transformer according to an embodiment of the present invention;
FIG. 3 is a schematic view of the mounting of the transformer body to the housing;
FIG. 4 is a block diagram of a transformer body;
FIG. 5 is a connection diagram of the coil and the pressure block.
Detailed Description
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
Referring to fig. 1 and 2, an embodiment of the present invention provides a novel dry-type transformer.
The novel dry type transformer includes a transformer body 300 and a case 100.
The transformer body 300 includes a coil 310 and a core 320. The casing 100 is provided with a longitudinal ventilation duct 210, the transformer body 300 is located in the ventilation duct 210, the coil 310 is provided with a longitudinal coil air duct 330, the casing 100 is provided with an air inlet 201 and an air outlet 202, the air inlet 201 and the air outlet 202 are both communicated with the ventilation duct 210, the air inlet 201 is located below the transformer body 300, and the air outlet 202 is located above the transformer body 300.
Note that the arrows in fig. 2 indicate the direction of the air flow.
In this embodiment, the transformer body 300 is disposed in the longitudinal air duct 210, the air inlet 201 is disposed below the transformer body 300, and the air outlet 202 is disposed above the transformer body 300; when the transformer body 300 works, heat is generated to heat the surrounding air; the chimney effect is utilized to enable the hot air in the air duct 210 to rise upwards, air flow is formed in the air duct 210, and cold air enters the air duct 210 from the air inlet 201 at the lower part and leaves the air duct 210 from the air outlet 202 at the upper part; in addition, the air flow passes through the longitudinal coil air duct 330 in the coil 310, so that the heat generated by the coil 310 can be better taken away, and the coil 310 can be rapidly cooled; the air flow formed by the chimney effect takes away the heat generated by the operation of the transformer body 300, and cools and dissipates the heat of the transformer body 300, so that the transformer body 300 can be continuously kept in a normal operating temperature range, and the heat dissipation capacity of the transformer is improved; the working temperature of the lower part of the coil 310 is higher than that of the upper part of the coil 310, so that the chimney effect is enhanced, and the heat dissipation capacity of the transformer is improved.
In the working process of the transformer body 300, the main heat generating part is the coil 310 part, and the coil 310 is provided with the coil air duct 330, so that air flow in the air duct 210 can pass through the inside of the coil 310, and the heat of the coil 310 can be rapidly taken away; in addition, the direction of the coil air duct 330 is longitudinal, the same as the direction of the air duct 210, and the same as the flowing direction of the air flow, so that the air flow can naturally pass through the coil air duct 330, the air flow is not blocked to reduce the flow speed, the heat of the coil 310 is smoothly taken away, and the cooling and heat dissipation of the coil 310 are facilitated.
It should be noted that the longitudinal direction is not limited to be perpendicular to the horizontal plane by 90 degrees, and it is also within the scope of the longitudinal direction even if the extending direction of the air duct 210 and the coil air duct 330 has a certain inclination angle with the vertical line as long as the extending direction of the air duct 210 and the coil air duct 330 is upward and a vertical slope exists.
The chimney effect, which is one manifestation of the heat exchange form; the chimney effect refers to a phenomenon that air rises or falls along a space with a vertical slope, so that convection of the air is enhanced. In buildings and structures with shared atrium, vertical ventilation air duct, stairwell and the like, which have similar chimney characteristics, namely, smooth circulation space from bottom to top, the phenomenon that air is quickly diffused or discharged out of the buildings along the channel under the action of density difference is known as chimney effect.
The chimney effect is the natural draft caused by hot pressing. The natural ventilation under the action of hot pressing generates air density difference due to the temperature difference of the air inside and outside the object, so that pressure difference is formed, and the indoor air and the outdoor air tend to flow. The air with high indoor temperature rises due to small specific gravity and is exhausted from the air opening at the upper part of the object, and a negative pressure area is formed at the original place of the low-density air, so that the fresh air with lower outdoor temperature and high specific gravity is sucked from the bottom of the building, and the indoor and outdoor air continuously flows.
The intensity of the chimney effect is related to the height difference of the air inlet and the air outlet, the temperature difference of the indoor air and the outdoor air and the degree of air circulation of the indoor air and the outdoor air. The greater the indoor and outdoor temperature difference and the height difference of the air inlet and the air outlet, the more obvious the hot pressing effect.
In some embodiments of the present invention, the case 100 includes a main receiving portion 120 and an air outlet portion 110, and the main receiving portion 120 is a portion that receives the transformer body 300. The main receiving part 120 is a hexagonal prism body, approximating the shape of the transformer body 300, which can be advantageous to reduce production material costs and transportation space costs.
In addition, the housing 100 can prevent wind, rain, dust and external impact, and has a good protection effect on the internal transformer body 300.
In some embodiments of the present invention, the air duct 210 includes an outlet duct 212 disposed in the outlet portion 110; the end of the air outlet pipe 212 is an air outlet 202, and the air outlet pipe 212 gradually narrows toward the air outlet 202. Since the outlet pipe 212 is disposed in the longitudinal direction, the hot air exiting from the outlet port 202 is cooled, the density is increased, and if the flow rate of the hot air exiting from the outlet port 202 is too low, there is a problem that the hot air flows back to the outlet port 202. The air outlet pipe 212 which narrows gradually towards the air outlet 202 is adopted, so that the speed of air flow flowing along the air outlet pipe 212 can be gradually increased, the flow speed of hot air leaving the air outlet 202 is increased, cold air is prevented from flowing back into the air outlet 202, and the heat dissipation effect is enhanced.
The gas outlet part 110 is in a frustum shape, and the cross section of the gas outlet part 110 is gradually reduced from bottom to top. This can make the holistic focus of transformer reduce, and structural stability is better, stands more stably.
Through setting up portion 110 of giving vent to anger for the air outlet 202 that is located the portion 110 end of giving vent to anger is in the highest position of whole transformer, is favorable to promoting the height of air outlet 202 like this, increases the difference in height of air outlet 202 and air intake 201. The intensity of the chimney effect can be increased by increasing the height difference between the air outlet 202 and the air inlet 201, the hot-pressing effect is more obvious, the air flow is stronger, and the heat dissipation effect of the transformer is favorably improved.
In some embodiments of the present invention, a partition 400 is disposed between the housing 100 and the transformer body 300, and a longitudinal first ventilation gap 213 is formed between the partition 400 and the transformer body 300. The space between the shell 100 and the transformer body 300 is filled by the partition 400, so that the cold air coming from the air inlet 201 can be concentrated to the position of the transformer body 300; while allowing a longitudinal first ventilation gap 213 to be formed between the partition 400 and the transformer body 300. The width of the first ventilation gap 213 is generally designed to be narrow, which is beneficial to increase the flow velocity of the air flow in the ventilation pipe and improve the heat dissipation effect. The first ventilation gap 213 is located at the outer side of the transformer body 300, and the air flowing through the first ventilation gap 213 can take away the heat at the outer side of the transformer body 300. Of course, the width of the first ventilation gap 213 may be determined according to the actual production requirements and specific structural parameters of the transformer.
In addition, the separator 400 is made of an insulating material and has an insulating function.
In some embodiments of the present invention, the air duct 210 includes an air inlet duct 211, the air inlet duct 211 being located at a lower portion of the case 100; the head end of the air inlet pipe 211 is an air inlet 201. The intake 201 is disposed outside the housing, and the intake duct 211 extends toward the interior of the housing 100. The air inlet pipe 211 is of a circular pipe type structure, so that cold air entering from the air inlet 201 is more concentrated, the air inlet flow speed can be effectively improved, and the heat dissipation efficiency of the cold air is improved.
In some embodiments of the present invention, there are a plurality of air inlet ducts 211; the plurality of air inlet pipes 211 are arranged around the transformer body 300, and the air outlet directions of the plurality of air inlet pipes 211 face the transformer body 300, so that the cold air can be concentrated at the position of the transformer body 300, and the heat dissipation of the transformer body 300 is facilitated.
Specifically, the main receiving portion 120 of the housing 100 has a hexagonal prism shape, and the lower portion has a hexagonal frustum shape. The number of the air inlets 201 arranged on the six surfaces of the hexagonal frustum shaped lower part is 2, 3, 1 and 3 respectively. Correspondingly, each air inlet 201 is connected with one air inlet pipeline 211, and 13 air inlets 201 and 13 air inlet pipelines 211 are arranged.
In some embodiments of the present invention, the partition 400 is provided with a through hole 410 adapted to the air inlet duct 211, and the air inlet duct 211 is inserted into the through hole 410; i.e., the outer wall of the air inlet duct 211 conforms to the inner wall of the perforation 410, which provides for better securement of the air inlet duct 211.
In some embodiments of the present invention, the transformer body 300 is a dry body, as distinguished from an oil-immersed body. The transformer body 300 includes an iron core 320 and a coil 310, the iron core 320 is a three-dimensional wound iron core 320 structure, and is formed by winding and processing an electrical steel strip or an amorphous strip, so as to obtain three rectangular iron core frames with approximately semicircular core column cross sections and identical geometric dimensions. The three rectangular iron core frames are vertically arranged and spliced two by two, and the vertical core columns of two adjacent rectangular iron core frames are abutted; thereby obtaining a three-dimensional structure with an equilateral triangle overlooking direction. The coils 310 include a-phase coil 310, a b-phase coil 310, and a c-phase coil 310, which are three-phase coils 310, and the three-phase coils 310 are wound around three vertical legs of the core 320, respectively, and are arranged in a triangular manner.
The housing 100 is provided with four low-voltage terminals 160, the four low-voltage terminals 160 are horizontally arranged on the same surface, and the four low-voltage terminals 160 are arranged at intervals; the four low-voltage wiring terminals 160 are arranged on the same surface, so that wiring is facilitated. The shell 100 is further provided with three high-voltage wiring terminals 150, the three high-voltage wiring terminals 150 are horizontally arranged on the other surface, and the three high-voltage wiring terminals 150 are arranged at intervals; the three high-voltage wiring terminals 150 are arranged on the same surface, so that wiring is facilitated. The high-voltage wiring terminal 150 and the low-voltage wiring terminal 160 are respectively arranged on different surfaces, so that the difference is convenient, and the wiring misconnection rate is reduced. Of course, in other embodiments, the number of the low voltage terminals 160 and the high voltage terminals 150 may be set according to actual requirements. The transformer is incorporated into the distribution network by connecting the cables through the low voltage terminals 160 and the high voltage terminals 150.
Based on the principle of the chimney effect, the strength of the chimney effect of the transformer is related to the thermal pressure difference between the air inlet 201 and the air outlet 202. The hot pressure difference between the air inlet 201 and the air outlet 202 is increased, the strength of the chimney effect of the transformer can be improved, and heat dissipation is facilitated. By increasing the difference between the temperature of the portion near the inlet port 201 and the temperature of the portion near the outlet port 202, the thermal compression difference between the inlet port 201 and the outlet port 202 can be increased.
In some embodiments of the present invention, the outer surface of the coil 310 is provided with a transverse annular air passage 340. The coil 310 includes a high voltage coil 312 and a low voltage coil 311, the high voltage coil 312 surrounding the outside of the low voltage coil 311; that is, specifically, the outer surface of the high voltage coil 312 is provided with a lateral annular air passage 340. The annular air duct 340 can increase the air contact area for assisting heat dissipation.
In some embodiments of the present invention, the annular air duct 340 has a plurality of circles, the plurality of circles of annular air ducts 340 are spaced from bottom to top along the coil 310, and the width of the plurality of circles of annular air ducts 340 is gradually increased from bottom to top. The width of the annular air duct 340 of the coil 310, which is farther from the air outlet 202, is smaller, the width of the annular air duct 340, which is closer to the air inlet 201, is larger, and the larger the width of the annular air duct 340 is more favorable for heat dissipation. Therefore, the temperature of the lower part of the coil 310 can be higher than that of the upper part of the coil 310, the difference between the temperature of the part close to the air inlet 201 and the temperature of the part close to the air outlet 202 can be increased, and the strength of the chimney effect of the transformer can be enhanced.
In some embodiments of the present invention, the number of turns of the coil 310 is gradually decreased from bottom to top, and the conductor cross-section of the coil 310 is gradually increased from bottom to top.
The coil 310 has a larger number of turns in the portion of the coil 310 farther from the outlet 202 and a smaller number of turns in the portion of the coil 310 closer to the inlet 201, and the portion of the coil 310 having the larger number of turns heats more during operation, resulting in a higher temperature. Therefore, the temperature of the lower part of the coil 310 can be higher than that of the upper part of the coil 310, the difference between the temperature of the part close to the air inlet 201 and the temperature of the part close to the air outlet 202 can be increased, and the strength of the chimney effect of the transformer can be enhanced.
In addition, the portion of the coil 310 farther from the outlet 202 has a smaller conductor cross section, and the portion of the coil 310 closer to the inlet 201 has a larger conductor cross section, so that the portion of the coil 310 having a smaller conductor cross section generates more heat during operation, resulting in a higher temperature. Therefore, the temperature of the lower part of the coil 310 is higher than that of the upper part of the coil 310, the difference between the temperature of the part close to the air inlet 201 and the temperature of the part close to the air outlet 202 can be increased, and the strength of the chimney effect of the transformer can be enhanced.
Referring to fig. 3 and 4, in some embodiments of the invention, coil air duct 330 includes a first coil air duct 301; the high voltage coil 312 and the low voltage coil 311 form a first coil air duct 301 therebetween. The air flow in the air duct 210 can pass through the surfaces of the high-voltage coil 312 and the low-voltage coil 311, so that the heat of the high-voltage coil 312 and the low-voltage coil 311 can be rapidly taken away; in addition, the direction of the first coil air duct 301 is longitudinal, the same as the direction of the air duct 210, and the same as the flowing direction of the air flow, so that the air flow can naturally pass through the coil air duct 330, the heat of the coil 310 is smoothly taken away, and the cooling and heat dissipation of the coil 310 are facilitated.
In some embodiments of the present invention, the coil air chute 330 comprises a second coil air chute 302 and a third coil air chute 303; a third coil air duct 303 is formed in the high-voltage coil 312; the low voltage coil 311 is formed with a second coil air passage 302 formed therein in a longitudinal direction. The third coil duct 303 enables the air flow in the air duct 210 to pass through the inside of the high-voltage coil 312, and the second coil duct 302 enables the air flow in the air duct 210 to pass through the inside of the low-voltage coil 311, so that heat of the high-voltage coil 312 and the low-voltage coil 311 is rapidly taken away. In addition, the third coil air duct 303 and the second coil air duct 302 are both in a longitudinal direction, the direction of the third coil air duct 303 is the same as that of the air duct 210, and the direction of the third coil air duct 302 is the same as that of the air flow, so that the air flow can naturally pass through the third coil air duct 303 and the second coil air duct 302, the heat of the coil 310 is smoothly taken away, and the cooling and heat dissipation of the coil 310 are facilitated.
According to some embodiments of the present invention, the outer side of the casing 100 is provided with a hanging plate 130, and the transformer can be conveniently lifted by the hanging plate 130. Specifically, the hanger plate 130 includes a horizontal bar, a vertical bar, and a hook bar; the transverse strips and the longitudinal strips are vertically arranged to form an inverted L shape; the gib is located the end of horizontal bar, and all protrudes in the upper and lower direction of horizontal bar. The longitudinal bars are connected to the outer wall surface of the case 100.
In some embodiments of the present invention, the raised base 140 is disposed below the casing 100, the raised base 140 plays a role of bearing, and in addition, the raised base 140 keeps the casing 100 away from the ground, so as to reduce water vapor on the ground from entering the casing 100, and prevent the water vapor from damaging the transformer body 300 in the casing 100.
In addition, the raised base 140 enables the lower portion of the casing 100 and the lower portion of the transformer body 300 located in the lower portion of the casing 100 to be away from the ground. Since the ground temperature is generally low, moving the lower portion of transformer body 300 away from the ground reduces the effect of the ground on the temperature of the lower portion of transformer body 300.
Specifically, the bed-up base 140 includes two leg bars arranged in parallel, and a plurality of reinforcing bars are connected between the two leg bars, specifically, the number of the reinforcing bars is six. Many reinforcement strips parallel arrangement, and reinforcement strip and the perpendicular setting of leg strip.
Referring to fig. 5, in some embodiments of the present invention, the coil 310 is compressed and supported by the pressing block 350 without being fixed and supported by the clip. When the coil 310 is supported by the clips, the clips are bulky and can cause a large area of shielding for the coil duct 330. When the coil 350 is supported by the pressing block 350, each coil 310 only needs to be supported by 3 pressing blocks 350, each pressing block 350 is separately connected with the coil, and in addition, the volume of each pressing block 350 is smaller than that of the clamping piece. Compared with the scheme of supporting through the clamping piece, the shielding area of the coil 310 can be reduced through the supporting of the pressing block 350, and the heat dissipation capacity is improved.
The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above embodiment, and the present invention shall fall within the protection scope of the present invention as long as the technical effects of the present invention are achieved by the same means.
Claims (10)
1. A novel dry-type transformer, characterized in that includes:
a transformer body including a coil;
the transformer comprises a shell, a transformer body and a ventilation duct, wherein the shell is provided with a longitudinal ventilation duct, the transformer body is positioned in the ventilation duct, the shell is provided with an air inlet and an air outlet, the air inlet and the air outlet are both communicated with the ventilation duct, the air inlet is positioned below the transformer body, and the air outlet is positioned above the transformer body so as to form a chimney effect; the coil is provided with a longitudinal coil air duct; the lower portion of the coil is at a higher operating temperature than the upper portion of the coil to enhance the chimney effect.
2. The novel dry-type transformer of claim 1, wherein the housing is provided with an air outlet portion, and the ventilation duct comprises an air outlet pipe arranged in the air outlet portion; the tail end of the air outlet pipeline is the air outlet, and the air outlet pipeline gradually narrows towards the air outlet.
3. The new dry transformer as claimed in claim 1, wherein a partition is disposed between the housing and the transformer body, and a first longitudinal ventilation gap is formed between the partition and the transformer body.
4. The new dry transformer as claimed in claim 3, wherein said ventilation duct comprises an air inlet duct, said air inlet duct being located at a lower portion of said housing; the head end of the air inlet pipeline is the air inlet.
5. The novel dry-type transformer of claim 4, wherein the air inlet duct is provided with a plurality of air inlet ducts; the air inlet pipelines are arranged around the transformer body, and the air outlet directions of the air inlet pipelines face the transformer body.
6. A novel dry transformer as claimed in claim 1 wherein the outer surface of said coil is provided with transverse annular air passages.
7. The novel dry-type transformer as claimed in claim 6, wherein the annular air passage has a plurality of turns, the plurality of turns of the annular air passage are spaced from bottom to top along the coil, and the width of the plurality of turns of the annular air passage gradually increases from bottom to top.
8. The novel dry-type transformer as claimed in claim 1, wherein the number of turns of the coil is gradually reduced from bottom to top, and the conductor cross section of the coil is gradually increased from bottom to top.
9. The novel dry-type transformer of claim 1, wherein the coil comprises a high voltage coil and a low voltage coil, the high voltage coil is wound around the outside of the low voltage coil, and the coil air duct comprises a first coil air duct formed between the high voltage coil and the low voltage coil.
10. The new dry transformer of claim 9, wherein the coil air duct further comprises a second coil air duct and a third coil air duct; the second coil duct is formed inside the low-voltage coil, and the third coil duct is formed inside the high-voltage coil.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2022/088260 WO2023201642A1 (en) | 2022-04-21 | 2022-04-21 | Novel dry-type transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115023775A true CN115023775A (en) | 2022-09-06 |
Family
ID=83065421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202280001421.9A Pending CN115023775A (en) | 2022-04-21 | 2022-04-21 | Novel dry-type transformer |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN115023775A (en) |
| WO (1) | WO2023201642A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116230358A (en) * | 2023-02-23 | 2023-06-06 | 海鸿电气有限公司 | Heat radiation structure of transformer equipment and electric room reconstruction method |
| CN117809936A (en) * | 2023-12-28 | 2024-04-02 | 广东康德威电气股份有限公司 | Three-dimensional roll iron core dry-type transformer |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205140719U (en) * | 2015-11-06 | 2016-04-06 | 红旗集团温州变压器有限公司 | Dry -type transformer |
| CN106098316A (en) * | 2016-07-27 | 2016-11-09 | 中电电气(江苏)股份有限公司 | A kind of transformator air channel structure |
| KR102259422B1 (en) * | 2019-06-17 | 2021-06-01 | 이종순 | Cooling apparatus for mold type transformer |
-
2022
- 2022-04-21 WO PCT/CN2022/088260 patent/WO2023201642A1/en unknown
- 2022-04-21 CN CN202280001421.9A patent/CN115023775A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116230358A (en) * | 2023-02-23 | 2023-06-06 | 海鸿电气有限公司 | Heat radiation structure of transformer equipment and electric room reconstruction method |
| WO2024174499A1 (en) * | 2023-02-23 | 2024-08-29 | 海鸿电气有限公司 | Heat dissipation structure for voltage transformation apparatus, and power room rebuilding method |
| CN117809936A (en) * | 2023-12-28 | 2024-04-02 | 广东康德威电气股份有限公司 | Three-dimensional roll iron core dry-type transformer |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023201642A1 (en) | 2023-10-26 |
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