CN1367502A - Cooling structure of static inductor - Google Patents
Cooling structure of static inductor Download PDFInfo
- Publication number
- CN1367502A CN1367502A CN 01137444 CN01137444A CN1367502A CN 1367502 A CN1367502 A CN 1367502A CN 01137444 CN01137444 CN 01137444 CN 01137444 A CN01137444 A CN 01137444A CN 1367502 A CN1367502 A CN 1367502A
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- coil
- pressing plate
- transformer
- coil pressing
- cold
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Abstract
The invention provides a cooling structure of static induction apparatus which prevents the abnormal overheating due to intrusion of a leaking flux and ensures a cold flow needed for cooling coils. The cooling structure of a static induction apparatus has coils 11, 12 wound around cores 10, a plurality of refrigerant passages 16a-16d for flowing a refrigerant from below to above along the coils 11, 12, and a coil retainer board 17 disposed at the ends of the coils 11, 12. The retainer board 17 is made of a nonmetallic or nonmagnetic material and has a plurality of pass holes 18 for flowing the refrigerant into the refrigerant passages 16a-16d.
Description
Technical field
The present invention relates to the cooling construction of the static transformer of transformer and reactor etc., particularly relate to reduce and make man-hour, prevent to invade cause overheated unusually, and the improvement of cooling construction that can improve the static transformer of coil cooling capacity because of leakage flux.
Background technology
Along with the increase of electricity needs in recent years, static transformer trends towards maximizing and high capacity.Under this background, the capacity one of static transformer is big, and then magnetic leakage flux increases, and can strengthen stray loss thus, and power consumption is increased, and for this reason, has produced the method for various minimizing power consumptions.
In conjunction with Fig. 4 and Fig. 5, transformer one example as static transformer is made an explanation.Fig. 4 is the cutaway view of transformer infrastructure, the vertical view of Fig. 5 for seeing above coil.In Fig. 4 and Fig. 5, symbol 1 is unshakable in one's determination, and 2 and 3 is around iron core 1 low-voltage coil and high-tension coil on every side, the 4th, the container of folding and unfolding iron core 1, low-voltage coil 2 and high-tension coil 3.The 5th, be fixed on container 4 bottoms, support the end frame unshakable in one's determination of 1 lower end unshakable in one's determination.
In this transformer, the capacity of transformer is in case increase will strengthen each coil 2,3 leakage flux that produced, and magnetic flux is invaded the iron and steel structure of container 4 and end frame unshakable in one's determination 5 etc., because of the vortex flow loss causes that these structures are overheated unusually, can increase stray loss simultaneously sometimes.
Therefore, for preventing to invade the unusual overheated and minimizing stray loss of the structure that causes because of this leakage flux, the inventor once proposed the technical scheme (being called " motion device " under this) of real fair 2-66818 communique (logining No. 2505922) record.As shown in Figure 4, this is a kind of structure of magnetic screen 7 being cut apart on the end frame unshakable in one's determination 5 that is arranged under refrigerant passage 6a, 6b, 6c, the 6d, passage portion 7a, 7b, 7c, 7d being set in magnetic screen 7 simultaneously.In addition, on the end frame 5 unshakable in one's determination position corresponding, be formed with through hole 5a, 5b, 5c, 5d with each passage portion 7a～7d.Adopt this structure, when the cold-producing medium of insulation wet goods by direction shown in the arrow A when flow upward in the bottom of container 4, can form and pass through passage portion 7a～7d, the inboard coil 2 and the coil 3 in the outside are cooled off equally equably to the form that refrigerant passage 6a～6d approximate equality flows.
Yet, in the above-mentioned device of motion, as shown in Figure 5, when the coil 3 with 3 phases is held in place in the magnetic screen 7 of coil bottom, in order stably to keep the gravity balance of transformer integral body, be positioned at the magnetic screen 7 horizontal direction setting accurately of bottom.But, the normally big Container of transformer of this magnetic screen 7 is housed, will inevitably increase the size of magnetic screen 7, become sizable weight thing.
For this reason, want to set the dimensional accuracy of magnetic screen 7 itself, correspondingly need to increase the labour, in addition, can increase these members of machining used Production Times.And, because in order to ensure being the passage portion 7a～7d and the through hole 5a～5d of purpose, formed several sections and magnetic screen 7 cut apart to improve cold-producing medium circulation effect, therefore, also exist the corresponding increase magnetic screen problem in 7 assembling man-hours.
In view of the above problems, the object of the invention is except will solving the above problems, and also provides a kind of preventing to invade cause overheated unusually, and can guarantee the cooling construction of the static transformer of the cool stream that the coil cooling is required because of leakage flux.
Disclosure of an invention
The present invention of root a tree name, the means that solve above-mentioned problem are as follows:
(1) cooling construction of static transformer of the present invention, have the coil that is wound on around unshakable in one's determination, make a plurality of refrigerant passage of the cold-producing medium circulation of flowing upward from the below along this coil and the coil pressing plate that is provided in described end winding, it is characterized in that, described coil pressing plate is formed by nonmetal and nonmagnetic substance, is provided with a plurality of via holes that can make described cold-producing medium flow into described refrigerant passage simultaneously on this coil pressing plate.
(2) again, described coil pressing plate adopts timber to form.
(3) again, described coil pressing plate adopts the thermosetting resin material to form.
(4) again, the periphery at described via hole implements chamfering.
The simple declaration of drawing
Fig. 1 is the cutaway view of cooling construction of the expression static transformer of the invention process form 1.
Fig. 2 is the coil pressing plate skeleton diagram of the invention process form 1 usefulness.
The coil pressing plate that Fig. 3 sees from coil sides for the expression of the invention process form 1 and the approximate vertical view of coil correlation.
Fig. 4 is the cutaway view of conventional apparatus (motion device),
Fig. 5 is for seeing the summary section plan of conventional apparatus from above.
Implement optimal morphology of the present invention
Example 1
To example 1 shown in Figure 3, describe the cooling construction of static transformer of the present invention below in conjunction with Fig. 1 in detail.Fig. 1 is that the expression static transformer of example 1 is wanted the cutaway view of portion, and Fig. 2 is the coil pressing plate skeleton diagram of example 1 usefulness, the coil pressing plate that Fig. 3 sees from coil sides for expression and the approximate vertical view of coil correlation
Again, around low-voltage coil 11 and high-tension coil 12, be provided with refrigerant passage 16a, 16b, 16c, 16d that cold-producing medium is circulated upward, make the cold-producing medium that flows in the container 14 become the cool stream shown in the arrow A, and it is mobile to rise along refrigerant passage 16a～16d.
The following describes the coil pressing plate 17 that is provided in low-voltage coil 11 and high-tension coil 12 ends.This coil pressing plate 17 is formed by nonmetal and nonmagnetic substance, is set on the end frame unshakable in one's determination 13 at two ends up and down of two coils 11 of high-low pressure and 12.As shown in Figure 2, coil pressing plate 17 ringwise tabulars, the heart is provided with the empty 17a that iron core 10 is provided with usefulness therein.Again, on coil pressing plate 17, be provided with a plurality of via holes 18 of cold-producing medium, make cold-producing medium flow into refrigerant passage 16a～16d by usefulness along the diameter B direction of two coils 11 of high-low pressure and 12.In configuration during via hole 18, should set for by cool stream and flow into the form that low-voltage coil 11 and high-tension coil 12 cool off two coils 11 and 12 equably equably cold-producing medium.In addition, these via holes 18 can be arranged on the orienting station corresponding with refrigerant passage 16a～16d.For example implement chamfering C at two ora terminalis up and down of each via hole 18, to reduce the circulating resistance loss that causes because of the cold-producing medium flow velocity with circular arc again.
Then, in container 14 to the transformer with said structure carry out 3 phase connections, when making static transformer, as shown in Figure 3,3 iron cores 10 are set, periphery coiling low-voltage coil 11 and high-tension coil 12 at each iron core 10, on each end frame 13 unshakable in one's determination of each 10 bottom unshakable in one's determination of supporting, the coil pressing plate 17 of annular is set respectively.At this moment, keep horizontal accuracy, thus, can regulate the horizontal equilibrium of static transformer integral body simply and assemble as long as each coil pressing plate 17 is adjusted to each transformer.
In the cooling construction of the static transformer that adopts structure like this, owing on coil pressing plate 17, be provided with a plurality of via holes 18 with the cross-sectional flow area that can guarantee coil 11 and 12 regulation flow velocitys, therefore, cool stream shown in the arrow A flows into by via hole 18 and is positioned at coil 11 and 12 refrigerant passage 16a～16d on every side, rises with the temperature of restraining each coil 11 and 12.
If adopt aforesaid the invention process form 1, then coil pressing plate 17 is when making the static transformer of transformer 3 phase connections, different with the magnetic screen that is arranged on 3 transformer baies continuously 7 in the motion device, but coil pressing plate 17 individually is arranged on each transformer, therefore, improve the horizontal accuracy of coil pressing plate 17 easily, can under the state of precision of improving the standard, be provided with.
Again, because of coil pressing plate 17 volumes little, make the required time of these members so can correspondingly shorten significantly, and, because only need wear the via hole 18 that leads to refrigerant passage 16a～16d on coil pressing plate 17 just can easily form, therefore, different with the structure that magnetic screen 7 is divided into each section in the above-mentioned device of motion, also can correspondingly avoid increasing assembling man-hour.
And, coil pressing plate 17 is owing to made by nonmetal and nonmagnetic substance, therefore, different with the structure that forms by coil pressing plate 17 in the above-mentioned device of motion, even coil pressing plate 17 is inserted between two coils 11,12 and the end frame unshakable in one's determination 13, do not need to strengthen the insulation distance of setting with two coils 11 and 12 yet, thereby, the effect that can avoid the static transformer shape to maximize had.
Again, owing to adopted nonmagnetic substance, can not produce the vortex flow loss that causes because of leakage flux intrusion from coil 11 and 12, therefore, can restrain coil pressing plate 17, end frame unshakable in one's determination 13, coil 11 and 12 so that structures such as container 14 overheated unusually also has the effect that can prevent that stray loss from increasing.
Because on coil pressing plate 17,, therefore, has the effect of cooling coil 11 efficiently and 12 along a plurality of via holes 18 of radially being provided with of low-voltage coil 11 and high-tension coil 12 by cold-producing medium again.
Again,, therefore, can reduce the circulating resistance of cold-producing medium, correspondingly improve cooling effect owing to be provided with chamfering C at the periphery of each via hole 18.
Example 2
In this example 2, coil pressing plate 17 uses is timber as white birch material and so on, and other structure is identical with above-mentioned example 1.Adopt this structure, have handling ease, lightweight, can obtain the effect of the cooling construction of static transformer cheaply.
Example 3
Again, the coil pressing plate of example 3 17 uses is the thermosetting resin stacking material of glass cloth base material epoxy resin etc., and other structure is identical with above-mentioned example 1.
Adopt this structure, high-fire resistance and processability are also good, and, have the effect of the cooling construction that can obtain the extremely good static transformer of higher dimensional stability.
More than be that this example has been done to specify, but concrete structure is not limited to this form, the present invention also comprises design alteration that does not break away from aim scope of the present invention etc.For example, example 1 to 3 is that the occasion of 3 single-phase transformers being carried out side by side 3 phase connections is described, but is not limited to this certainly.For example, also can use 1 transformer separately, in addition, be 3 phase transformer of 1 form applicable to 3 single-phase transformers are concentrated also, in this occasion, can only use 1 coil pressing plate 17 as shown in Figure 2 to form.
Again, though the chamfering C that the periphery of via hole 18 forms with the periphery that is located at coil pressing plate 17 upper and lower surfaces for well, root a tree name needs also can be located on the periphery of the face of a side wherein.
In sum, adopt the cooling construction of static transformer of the present invention, can obtain following effect.
(1) cooling construction of static transformer of the present invention, have the coil that is wound on around unshakable in one's determination, make a plurality of refrigerant passage of the cold-producing medium circulation of flowing upward from the below along this coil and the coil pressing plate that is provided in described end winding, it is characterized in that, described coil pressing plate is formed by nonmetal and nonmagnetic substance, is provided with a plurality of via holes that can make described cold-producing medium flow into described refrigerant passage simultaneously on this coil pressing plate.Owing to, but the coil pressing plate individually is arranged on each transformer with at transformer bay the structure of magnetic screen to be set continuously different in the past, therefore, improve the horizontal accuracy of coil pressing plate easily, have the effect of the precision of improving the standard.Little because of coil pressing plate volume again, so can correspondingly shorten Production Time significantly, and, owing to adopted the simple structure that only need on the coil pressing plate, wear the via hole that leads to refrigerant passage, therefore, different with the structure that magnetic screen is divided into each section, have and can correspondingly avoid increasing the assembling effect in man-hour.
And, the coil pressing plate is owing to made by nonmetal and nonmagnetic substance, therefore, different with the structure that forms by coil pressing plate 7 in the above-mentioned device of motion, even the coil pressing plate is inserted between coil and the end frame unshakable in one's determination, do not need to strengthen the insulation distance of setting with coil yet, thereby have the effect that to avoid the static transformer shape to maximize.
Again, owing to adopted nonmagnetic substance, can not produce the vortex flow loss that causes because of leakage flux intrusion, therefore from coil, can restrain coil pressing plate 17, end frame unshakable in one's determination, coil so that structures such as container overheated unusually also has the effect that can prevent that stray loss from increasing.Again, owing on the coil pressing plate, can therefore, have the effect of cooling coil efficiently by the via hole of cold-producing medium along radially being provided with of low-voltage coil, high-tension coil is a plurality of.
(2) again, owing to it is characterized in that, the coil pressing plate adopts timber to form, and therefore, can improve processability, realizes lightweight, also can obtain the cooling construction of static transformer cheaply.
(3) again, adopt the thermosetting resin material to form owing to it is characterized in that the coil pressing plate, therefore, high-fire resistance and processability are also good, and, can obtain the cooling construction of the extremely good static transformer of higher dimensional stability.
, owing to it is characterized in that at the periphery of via hole implemented chamfered, therefore, the flow path resistance of the cold-producing medium of via hole can be reduced flow into, the cooling effect of coil can be correspondingly improved (4) again.
Claims (4)
1, a kind of cooling construction of static transformer, have and be wound on coil, a plurality of refrigerant passage that make the cold-producing medium circulation that flows to the top along this coil from the below and the coil pressing plate that is provided in described end winding on every side unshakable in one's determination, it is characterized in that, described coil pressing plate is formed by nonmetal and nonmagnetic substance, is provided with a plurality of via holes that can make described cold-producing medium flow into described refrigerant passage simultaneously on this coil pressing plate.
2, the cooling construction of static transformer as claimed in claim 1 is characterized in that, described coil pressing plate adopts timber to form.
3, the cooling construction of static transformer as claimed in claim 1 is characterized in that, described coil pressing plate adopts the thermosetting resin material to form.
4, as the cooling construction of each described static transformer in the claim 1 to 3, it is characterized in that, on the periphery of described via hole, implement chamfering.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP013010/01 | 2001-01-22 | ||
| JP2001013010A JP2002217041A (en) | 2001-01-22 | 2001-01-22 | Cooling structure of static induction apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1367502A true CN1367502A (en) | 2002-09-04 |
Family
ID=18879936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01137444 Pending CN1367502A (en) | 2001-01-22 | 2001-11-13 | Cooling structure of static inductor |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2002217041A (en) |
| CN (1) | CN1367502A (en) |
| HK (1) | HK1047187A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107112122A (en) * | 2015-05-15 | 2017-08-29 | 富士电机株式会社 | The cooling construction of coil assembly |
| CN108604850A (en) * | 2016-02-03 | 2018-09-28 | 三菱电机株式会社 | Electric rotating machine |
| CN112119473A (en) * | 2019-04-22 | 2020-12-22 | 东芝三菱电机产业系统株式会社 | Cooling structure of transformer |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101099190B1 (en) | 2009-12-28 | 2011-12-27 | 주식회사 효성 | oil filled transformer |
| JP5448185B2 (en) * | 2010-06-10 | 2014-03-19 | 三菱電機株式会社 | Transformer |
-
2001
- 2001-01-22 JP JP2001013010A patent/JP2002217041A/en active Pending
- 2001-11-13 CN CN 01137444 patent/CN1367502A/en active Pending
-
2002
- 2002-12-04 HK HK02108807.4A patent/HK1047187A1/en unknown
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107112122A (en) * | 2015-05-15 | 2017-08-29 | 富士电机株式会社 | The cooling construction of coil assembly |
| CN107112122B (en) * | 2015-05-15 | 2018-11-30 | 富士电机株式会社 | The cooling construction of coil assembly |
| US11139100B2 (en) | 2015-05-15 | 2021-10-05 | Fuji Electric Co., Ltd. | Cooling structure for coil component |
| CN108604850A (en) * | 2016-02-03 | 2018-09-28 | 三菱电机株式会社 | Electric rotating machine |
| CN112119473A (en) * | 2019-04-22 | 2020-12-22 | 东芝三菱电机产业系统株式会社 | Cooling structure of transformer |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2002217041A (en) | 2002-08-02 |
| HK1047187A1 (en) | 2003-02-07 |
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