CN219936797U - High-safety dry-type transformer - Google Patents
High-safety dry-type transformer Download PDFInfo
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- CN219936797U CN219936797U CN202321128694.8U CN202321128694U CN219936797U CN 219936797 U CN219936797 U CN 219936797U CN 202321128694 U CN202321128694 U CN 202321128694U CN 219936797 U CN219936797 U CN 219936797U
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- voltage winding
- type transformer
- rubber cushion
- exhaust fan
- dry
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- 238000004804 winding Methods 0.000 claims abstract description 85
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 23
- 229910052742 iron Inorganic materials 0.000 claims description 11
- 230000017525 heat dissipation Effects 0.000 claims description 7
- 239000002131 composite material Substances 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 2
- 238000001816 cooling Methods 0.000 abstract description 23
- 239000000428 dust Substances 0.000 abstract description 20
- 230000001133 acceleration Effects 0.000 abstract 1
- 230000002787 reinforcement Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 9
- 238000009423 ventilation Methods 0.000 description 8
- 238000009434 installation Methods 0.000 description 5
- 238000009413 insulation Methods 0.000 description 4
- 230000005674 electromagnetic induction Effects 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Transformer Cooling (AREA)
Abstract
The utility model relates to the field of dry transformers, and discloses a high-safety dry transformer. The utility model discloses a high-safety dry-type transformer, which comprises a high-voltage winding, wherein a lower rubber cushion block is fixedly arranged at the bottom of the high-voltage winding, a lower fixing plate is fixedly connected to one side, far away from the high-voltage winding, of the lower rubber cushion block, a fan plate is fixedly welded to the bottom of one side, far away from the lower rubber cushion block, of the lower fixing plate, a blower is arranged on the surface of the fan plate, a blower hole is formed in one side, close to the blower, of the lower fixing plate, an upper rubber cushion block is fixedly arranged at the top of the high-voltage winding, the other end, far away from the high-voltage winding, of the upper rubber cushion block is in threaded connection, and an exhaust fan is fixedly arranged at the other side, far away from the upper rubber cushion block. The blower is opened, so that wind blows into the high-voltage winding through the blower hole, the internal component of the dry-type transformer is cooled, and the exhaust fan above the high-voltage winding is opened, so that the purposes of dust collection, air convection acceleration and cooling reinforcement can be achieved.
Description
Technical Field
The utility model belongs to the technical field of dry transformers, and particularly relates to a high-safety dry transformer.
Background
The dry-type transformer is a transformer in which the iron core and windings are not immersed in an insulating liquid, and is generally used in hospitals, schools, residential communities, and industrial and mining enterprises, compared with an oil-immersed transformer. The overload capacity of the dry-type transformer is related to the ambient temperature, the load condition before overload, the insulation heat dissipation condition of the transformer, the heating time constant and the like, so that the influence of the cooling performance of the dry-type transformer on the overload capacity is also important. The dry-type transformer is cooled by air convection during normal operation. The cooling modes are classified into natural air cooling and forced air cooling. During natural air cooling, the transformer can continuously operate for a long time under rated capacity. When forced air cooling is performed, the output capacity of the transformer can be improved by 50%. The method is suitable for intermittent overload operation or emergency accident overload operation. And dry transformers also require periodic dust cleaning. Excessive dust in dry transformers may impede airflow or break through insulation layers, affecting equipment safety.
The patent with publication number CN102723168B discloses a dry-type transformer, which comprises a transformer main body and a plurality of fans arranged at the bottom of the transformer main body, wherein the dry-type transformer further comprises a fixing frame, the fixing frame is arranged at the bottom of the transformer main body through a hanging screw, and the fans are detachably arranged on the fixing frame. The dry-type transformer can adjust the installation position of the fan and provide the maximum air quantity for the transformer winding, thereby ensuring that the dry-type transformer has higher overload capacity.
However, the dry type transformer lacks dustproof and dedusting measures, so that the ventilation part in the winding assembly is blocked to influence the cooling of the fan, and the safety of equipment is further influenced.
Disclosure of Invention
The utility model aims at: in order to solve the problems that the dry-type transformer lacks dustproof and dedusting measures, the ventilation part in the winding assembly is blocked to influence the cooling of a fan, and the safety of equipment is further influenced, the high-safety dry-type transformer is provided.
The technical scheme adopted by the utility model is as follows: the utility model provides a high safety dry-type transformer, includes high-voltage winding, the bottom fixed mounting of high-voltage winding has down rubber cushion, one side fixedly connected with down of high-voltage winding is kept away from to rubber cushion down, the bottom fixed welding of rubber cushion one side down is kept away from to the fixed plate down has the fan board, the surface of fan board is provided with the hair-dryer, the fan hole has been seted up to one side that the fixed plate is close to the hair-dryer down, the top fixed mounting of high-voltage winding has last rubber cushion, the other end that goes up the rubber cushion and keeps away from high-voltage winding has the fixed plate through bolted connection, the opposite side fixed mounting that goes up the fixed plate and keep away from last rubber cushion has the air exhauster.
Through adopting above-mentioned technical scheme, during the installation, will install down rubber cushion to the top of lower fixed plate earlier, install the high-voltage winding to the top of lower rubber cushion again, the rubber cushion is gone up in the top fixed mounting of high-voltage winding, passes through bolted connection with last fixed plate with last rubber cushion. The dry-type transformer is cooled by air convection during operation, and can continuously operate for a long time under rated capacity by natural air cooling under the condition of no load. When the dry-type transformer works, when the blower is opened, wind can be blown into the high-voltage winding through the blower hole, the internal components of the dry-type transformer can be cooled by air, and meanwhile, the exhaust fan above the high-voltage winding is opened, and the exhaust fan runs above the dry-type transformer, so that dust collection can be achieved, the effect of dust in the ventilation pipeline inside the winding is removed, air convection is accelerated, and the purpose of cooling is enhanced. Compared with the traditional dry type transformer, the wind power provided is stronger, dust can be cleaned in time, and the safety of the dry type transformer is improved while the high overload capacity of the dry type transformer is ensured.
In a preferred embodiment, an exhaust fan motor is fixedly arranged at the top of the exhaust fan, and an exhaust fan air outlet is arranged on the side wall of the exhaust fan.
Through adopting above-mentioned technical scheme, air exhauster motor drive air exhauster work, the air exhauster air outlet is with the hot-blast and the dust exhaust of air exhauster suction, reaches cooling and dirt-proof effect.
In a preferred embodiment, the high-voltage winding is internally provided with a vent hole, and the inner wall of the high-voltage winding is paved with a composite film.
Through adopting above-mentioned technical scheme, the air vent that sets up in the high-voltage winding can let the wind that the air exhauster produced flow from, takes away the heat. The composite film is mainly used for interlayer insulation and adhesion of the dry type transformer, and improves the safety of the dry type transformer.
In a preferred embodiment, the inner wall of the high-voltage winding is fixedly provided with a low-voltage winding, and a heat dissipation air passage hole is formed in the low-voltage winding.
Through adopting above-mentioned technical scheme, the inside heat dissipation air flue hole of seting up of low-voltage winding can increase the space that the air flows, improves the cooling effect of air exhauster.
In a preferred embodiment, the inner wall of the other side of the low-voltage winding, which is far away from the high-voltage winding, is fixedly provided with a magnetic core.
By adopting the technical scheme, the magnetic core enhances the electromagnetic induction of the primary winding and the secondary winding, correspondingly reduces the exciting current and reduces the magnetic leakage condition.
In a preferred embodiment, an upper iron yoke is fixedly inserted into the top of the magnetic core, and a lower iron yoke is fixedly inserted into the bottom of the magnetic core.
By adopting the technical scheme, the upper iron yoke, the lower iron yoke and the magnetic core are part of an equivalent circuit formed by the upper iron yoke, the lower iron yoke and the magnetic core, and the upper iron yoke and the lower iron yoke are used for closing all the equivalent circuits and closing a magnetic circuit.
In a preferred embodiment, a fan blade is mounted on a side of the fan adjacent to the magnetic core.
By adopting the technical scheme, the fan blade of the exhaust fan is started to extract heat generated in the dry type transformer, and the ventilation channel in the winding and dust accumulated on the upper surfaces of the high-voltage winding and the low-voltage winding are sucked away.
In a preferred embodiment, the lower yoke is fixedly connected with a lower fixing plate at two ends of the lower yoke far away from the magnetic core.
Through adopting above-mentioned technical scheme, the lower fixed plate plays the effect of fixed lower part yoke, improves the stabilizer of whole equipment.
In summary, due to the adoption of the technical scheme, the beneficial effects of the utility model are as follows:
in the utility model, during installation, a lower rubber cushion block is firstly installed on the top of a lower fixing plate, then a high-voltage winding is installed above the lower rubber cushion block, an upper rubber cushion block is fixedly installed above the high-voltage winding, and the upper rubber cushion block is connected with the upper fixing plate through bolts. The dry-type transformer is cooled by air convection during operation, and can continuously operate for a long time under rated capacity by natural air cooling under the condition of no load. When the dry-type transformer works, when the blower is opened, wind can be blown into the high-voltage winding through the blower hole, the internal components of the dry-type transformer can be cooled by air, and meanwhile, the exhaust fan above the high-voltage winding is opened, and the exhaust fan runs above the dry-type transformer, so that dust collection can be achieved, the effect of dust in the ventilation pipeline inside the winding is removed, air convection is accelerated, and the purpose of cooling is enhanced. Compared with the traditional dry type transformer, the wind power provided is stronger, dust can be cleaned in time, and the safety of the dry type transformer is improved while the high overload capacity of the dry type transformer is ensured.
Drawings
FIG. 1 is a schematic diagram of a high-safety dry-type transformer according to the present utility model;
FIG. 2 is a side view of a high safety dry-type transformer according to the present utility model;
fig. 3 is a top view of the structure of the high-voltage winding and the inner sleeve assembly of the high-voltage winding.
The marks in the figure: 1. a magnetic core; 2. a high voltage winding; 3. a vent hole; 4. a composite membrane; 5. a low voltage winding; 6. a heat dissipation air passage hole; 7. an exhaust fan; 8. an upper fixing plate; 9. an upper yoke; 10. a fan plate; 11. a lower fixing plate; 12. a fan hole; 13. a blower; 14. an exhaust fan motor; 15. an exhaust fan air outlet; 16. fan blades of an exhaust fan; 17. a lower rubber cushion block; 18. a rubber cushion block is arranged; 19. a lower yoke.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions in the embodiments of the present utility model will be clearly and completely described in the following in conjunction with the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Examples:
referring to fig. 1-3, a high-safety dry-type transformer comprises a high-voltage winding 2, a lower rubber cushion block 17 is fixedly arranged at the bottom of the high-voltage winding 2, a lower fixing plate 11 is fixedly connected to one side, far away from the high-voltage winding 2, of the lower rubber cushion block 17, a fan plate 10 is fixedly welded to the bottom of one side, far away from the lower rubber cushion block 17, of the lower fixing plate 11, a blower 13 is arranged on the surface of the fan plate 10, a blower hole 12 is formed in one side, close to the blower 13, of the lower fixing plate 11, an upper rubber cushion block 18 is fixedly arranged at the top of the high-voltage winding 2, an upper fixing plate 8 is connected to the other end, far away from the high-voltage winding 2, of the upper rubber cushion block 18 through bolts, and an exhaust fan 7 is fixedly arranged on the other side, far away from the upper fixing plate 8, of the upper rubber cushion block 18. During installation, the lower rubber cushion block 17 is firstly installed on the top of the lower fixing plate 11, then the high-voltage winding 2 is installed above the lower rubber cushion block 17, the upper rubber cushion block 18 is fixedly installed above the high-voltage winding 2, and the upper rubber cushion blocks 18 and 8 are connected through bolts. The dry-type transformer is cooled by air convection during operation, and can continuously operate for a long time under rated capacity by natural air cooling under the condition of no load. When the dry-type transformer works, when the blower 13 is opened, wind can be blown into the high-voltage winding 2 through the blower hole 12, the internal components of the dry-type transformer can be cooled by air cooling, meanwhile, the exhaust fan 7 above the high-voltage winding 2 is opened, the exhaust fan 7 operates above the dry-type transformer, dust collection can be achieved, the effect of removing dust in a ventilation pipeline inside the winding can be achieved, air convection can be accelerated, and the purpose of cooling can be enhanced. Compared with the traditional dry type transformer, the wind power provided is stronger, dust can be cleaned in time, and the safety of the dry type transformer is improved while the high overload capacity of the dry type transformer is ensured.
Referring to fig. 1 and 2, an exhaust fan motor 14 is fixedly installed at the top of the exhaust fan 7, and an exhaust fan air outlet 15 is installed at the side wall of the exhaust fan 7. The exhaust fan motor 14 drives the exhaust fan 7 to work, and the exhaust fan air outlet 15 discharges hot air and dust sucked by the exhaust fan 7, so that the effects of cooling and dust prevention are achieved.
Referring to fig. 1 and 3, a vent hole 3 is formed in the high-voltage winding 2, and a composite film 4 is laid on the inner wall of the high-voltage winding 2. The vent hole 3 arranged in the high-voltage winding 2 can enable wind generated by the exhaust fan 7 to flow and take away heat. The composite film 4 is mainly used for interlayer insulation and adhesion of the dry type transformer, and improves the safety of the dry type transformer.
Referring to fig. 1 and 3, a low-voltage winding 5 is fixedly installed on the inner wall of a high-voltage winding 2, and a heat dissipation air passage hole 6 is formed in the low-voltage winding 5. The heat dissipation air passage holes 6 formed in the low-voltage winding 5 can increase the space for air to flow, and the cooling effect of the exhaust fan 7 is improved.
Referring to fig. 2 and 3, the inner wall of the other side of the low-voltage winding 5, which is far from the high-voltage winding 2, is fixedly provided with a magnetic core 1. The magnetic core 1 enhances the electromagnetic induction of the primary winding and the secondary winding, and correspondingly reduces the exciting current and the magnetic leakage condition.
Referring to fig. 1 to 3, an upper yoke 9 is fixedly inserted into the top of the magnetic core 1, and a lower yoke 19 is fixedly inserted into the bottom of the magnetic core 1. The upper yoke 9 and the lower yoke 19 are part of an equivalent circuit formed with the magnetic core 1, and the upper yoke 9 and the lower yoke 19 are used to close the entire equivalent circuit and to close a magnetic circuit.
Referring to fig. 1 and 2, suction fan blades 16 are mounted on the side of suction fan 7 adjacent to core 1. The fan blades 16 are started to extract heat generated in the dry type transformer and suck dust accumulated on the ventilation channels in the windings, the high-voltage windings and the upper surfaces of the low-voltage windings.
Referring to fig. 2, lower fixing plates 11 are fixedly coupled to both ends of the lower yoke 19 remote from the magnetic core 1. The lower fixing plate 11 serves to fix the lower yoke 19, improving the stabilizer of the entire apparatus.
The implementation principle of the embodiment of the high-safety dry-type transformer is as follows: during installation, the lower rubber cushion block 17 is firstly installed on the top of the lower fixing plate 11, then the high-voltage winding 2 is installed above the lower rubber cushion block 17, the upper rubber cushion block 18 is fixedly installed above the high-voltage winding 2, and the upper rubber cushion block 18 is connected with the upper fixing plate 8 through bolts. The dry-type transformer is cooled by air convection during operation, and can continuously operate for a long time under rated capacity by natural air cooling under the condition of no load. When the dry-type transformer works, when the blower 13 is opened, wind can be blown into the high-voltage winding 2 through the blower hole 12, the internal components of the dry-type transformer can be cooled by air cooling, meanwhile, the exhaust fan 7 above the high-voltage winding 2 is opened, the exhaust fan 7 operates above the dry-type transformer, dust collection can be achieved, the effect of removing dust in a ventilation pipeline inside the winding can be achieved, air convection can be accelerated, and the purpose of cooling can be enhanced. Compared with the traditional dry type transformer, the wind power provided is stronger, dust can be cleaned in time, and the safety of the dry type transformer is improved while the high overload capacity of the dry type transformer is ensured.
The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.
Claims (8)
1. A high safety dry-type transformer comprising a high voltage winding (2), characterized in that: the bottom fixed mounting of high-voltage winding (2) has lower rubber cushion (17), one side fixedly connected with down fixed plate (11) of high-voltage winding (2) are kept away from to lower rubber cushion (17), the bottom fixed welding of lower rubber cushion (17) one side is kept away from to lower fixed plate (11) has fan board (10), the surface of fan board (10) is provided with hair-dryer (13), fan hole (12) have been seted up to one side that lower fixed plate (11) is close to hair-dryer (13), the top fixed mounting of high-voltage winding (2) has last rubber cushion (18), the other end that high-voltage winding (2) were kept away from to last rubber cushion (18) is through bolted connection to go up fixed plate (8), the opposite side fixed mounting that goes up rubber cushion (18) is kept away from to go up fixed plate (8) has air exhauster (7).
2. A high safety dry type transformer as claimed in claim 1, wherein: an exhaust fan motor (14) is fixedly arranged at the top of the exhaust fan (7), and an exhaust fan air outlet (15) is arranged on the side wall of the exhaust fan (7).
3. A high safety dry type transformer as claimed in claim 1, wherein: the high-voltage winding (2) is internally provided with a vent hole (3), and the inner wall of the high-voltage winding (2) is paved with a composite film (4).
4. A high safety dry type transformer as claimed in claim 3, wherein: the inner wall of the high-voltage winding (2) is fixedly provided with a low-voltage winding (5), and a heat dissipation air passage hole (6) is formed in the low-voltage winding (5).
5. A high safety dry type transformer according to claim 4, wherein: the inner wall of the other side of the low-voltage winding (5) far away from the high-voltage winding (2) is fixedly provided with a magnetic core (1).
6. A high safety dry type transformer according to claim 5, wherein: the top of the magnetic core (1) is fixedly inserted with an upper iron yoke (9), and the bottom of the magnetic core (1) is fixedly inserted with a lower iron yoke (19).
7. A high safety dry type transformer as claimed in claim 1, wherein: and an exhaust fan blade (16) is arranged on one side of the exhaust fan (7) close to the magnetic core (1).
8. A high safety dry type transformer according to claim 6, wherein: the two ends of the lower iron yoke (19) far away from the magnetic core (1) are fixedly connected with lower fixing plates (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321128694.8U CN219936797U (en) | 2023-05-11 | 2023-05-11 | High-safety dry-type transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321128694.8U CN219936797U (en) | 2023-05-11 | 2023-05-11 | High-safety dry-type transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219936797U true CN219936797U (en) | 2023-10-31 |
Family
ID=88492361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321128694.8U Active CN219936797U (en) | 2023-05-11 | 2023-05-11 | High-safety dry-type transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219936797U (en) |
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2023
- 2023-05-11 CN CN202321128694.8U patent/CN219936797U/en active Active
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