CN102832015A - Cooling device of tranformer - Google Patents
Cooling device of tranformer Download PDFInfo
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- CN102832015A CN102832015A CN2012101801811A CN201210180181A CN102832015A CN 102832015 A CN102832015 A CN 102832015A CN 2012101801811 A CN2012101801811 A CN 2012101801811A CN 201210180181 A CN201210180181 A CN 201210180181A CN 102832015 A CN102832015 A CN 102832015A
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Abstract
The invention provides a cooling device of a transformer, and the cooling device can effectively cool the transformer with simple structure. The cooling device of the transformer comprises a frame body (1) for storing the transformer (2); a first separating plate (6) which divides the periphery of the transformer into a front part and a rear part inside the frame body, and forms a first air channel (7) at the back side of the transformer; top fans for venting (8a, 8b) opposite to the first air channel (7) and arranged above the frame body; cooling air intake ports (4a, 4b) formed at a position which is at the front of the frame body and opposite to a base part (2a) of the transformer; and a second separating plate (10) which divides the cooling air intake ports up and down and separates the periphery of the transformer at the base side of the transformer. The following air channels are formed: a second air channel passing through the lower part of the second separating plate via the cooling air intake ports; a cooling air channel passing through a winding part of the transformer and then through the first air channel to arrive the top fans for venting; and a cooling air channel passing through intervals among the winding parts of the transformer via the cooling air intake ports to arrive the first air channel.
Description
Technical field
The cooling device of the transformer that the present invention relates to the transformer that is configured in the framework is cooled off.
Background technology
In semiconductor power conversion apparatus, part and the cooling of heat-producing device that cooling is constituted the semiconductor unit, main circuit transformer etc. of main circuit separately taken in three dishes (framework) respectively with the part of control unit that the more weak electric equipment by control printed circuit board of ratio of specific heat is constituted.Especially, the dish (framework) of taking in the many main circuit transformers of caloric value adopts and is provided with air entry in the front at least, and with the forced ventilation mode (for example with reference to patent documentation 1) of cabin fan exhaust.In the existing example of this patent documentation 1 record, disclose the transformer dish that is separated into upper space and lower space in the framework.At this transformer dish; Be provided with transformer side insulation board, case side insulating support unit and air-breathing cowling panel; Said transformer side insulation board becomes framework inner space partition member, and it stops the cooling air that is produced by cooling fan to circulate each other at upper space and lower space.And then, following formation is disclosed: at this transformer dish, will be rotated in the cooling air guiding that produces in the framework by cooling fan and surround in the tubular insulant of peripheral part of coil of transformer, the coil of transformer is cooled off.
In addition; As the another kind of type of cooling; Proposed the forced-draft type transformer tank, erected the whole ventilating duct of coil that is provided with trip embedding transformer, made the cooling air that absorbs from the air entry of the downside of demarcation strip between the inboard of ventilating duct and coil, rise in the inboard from the demarcation strip of lower box; The coil of cooling primary side and the coil of secondary side reduce poor (for example with reference to patent documentation 2) that temperature rises under roughly the same cooling condition.
Technical literature formerly
Patent documentation
[patent documentation 1] TOHKEMY 2009-76825 communique
[patent documentation 2] TOHKEMY 2000-232022 communique
Summary of the invention
At this; In the existing example of above-mentioned patent documentation 1 and patent documentation 2 records, be the forced ventilation mode, it only is taken into air from the face side of the framework of taking in transformer; Make the cooling air that is taken in the framework pass through around the transformer, utilize the cooling fan that is configured in the top to outside exhaust.
But; In the existing example of above-mentioned patent documentation 1 and patent documentation 2 records; The cooling air that all will be taken into from the front of framework is directed to around the transformer; Therefore, need blowing fan, surround transformer coil peripheral part tubular insulant and trip rule circle ventilating duct, with the lead wind guiding mechanism of bottom of above-mentioned tubular insulation division and ventilating duct of cooling air.Therefore, there is the unresolved problem that constitutes complicacy and framework maximization.In addition, in the existing example of patent documentation 1 and patent documentation 2 records, the cooling air passage is limited only within around the transformer, therefore, it is big that air drag becomes, and the cooling fan air quantity reduces, the unresolved problem that exists cooling effectiveness to reduce.And then, in the existing example of above-mentioned patent documentation 1 record, around secondary coil, be provided with the tubular insulant, therefore, must change the design of transformer itself, cause that cost rises significantly, there is unresolved problem as it is suitable that dry-type transformer can not be said so.
So the present invention is conceived to the unsolved problem of above-mentioned existing example, the objective of the invention is to, providing can be with the simple formation cooling device of the transformer of cooling transformer effectively.
To achieve these goals; The cooling device of the transformer that the present invention's first mode relates to is formed with the framework and first demarcation strip of taking in transformer; This first demarcation strip with before and after being separated into around the above-mentioned transformer, forms first air duct in the rear side of this transformer in this framework.And be formed with at this cooling device: cabin fan is used in exhaust, and is relative with above-mentioned first air duct, be configured in above-mentioned framework above; With the cooling air air entry, it is formed on the positive relative position of the base portion with above-mentioned transformer of above-mentioned framework.In addition, be provided with second demarcation strip at this cooling device, it is cut apart above-mentioned cooling air air entry up and down, and in the base portion side of above-mentioned transformer with separating up and down around it, and have the opening opposing portion of winding portion with above-mentioned transformer at least.And, be formed with: from second air duct of above-mentioned cooling air air entry through the bottom of above-mentioned second demarcation strip, and the winding portion that passes through above-mentioned transformer, arrive the cooling air passage of above-mentioned exhaust through above-mentioned first air duct again with cabin fan; And arrive the cooling air passage of above-mentioned first air duct through the gap between the winding portion of transformer from above-mentioned cooling air air entry.
According to this structure, can form from second air duct of cooling air air entry through the bottom of above-mentioned second demarcation strip, through the winding portion of above-mentioned transformer, arrive the cooling air passage of above-mentioned exhaust through above-mentioned first air duct again with cabin fan; And arrive the cooling air passage of above-mentioned first air duct through the gap between the winding portion of transformer from above-mentioned cooling air air entry.Thus, can make cooling air pass through in the winding portion of transformer and, can improve the cooling effectiveness of transformer on every side.In addition, it is unnecessary narrow and small there is no need the cooling air aisle limit, therefore, even the air quantity of cooling fan reduces and also can suppress cooling effectiveness and reduce.
In addition, the cooling device of the transformer that the present invention's second mode relates to is provided with the 3rd demarcation strip, the 3rd demarcation strip in the upper side of above-mentioned transformer with separating up and down around it, and be provided with at least with the winding portion of above-mentioned transformer relatively to peristome.
According to this structure; Can with second demarcation strip cooling air be imported in the lower side of transformer transformer winding portion around; Around the winding portion of transformer, attract cooling air with the 3rd demarcation strip in the upper side of transformer, energy efficiency is directed to cooling air around the transformer well.
In addition; Above-mentioned first demarcation strip of the cooling device of the transformer that Third Way of the present invention relates to comprises top partition board portion and side separation board; Said top partition board portion has kink; Separate the gap between this kink and this transformer top, be provided between top and framework top of above-mentioned transformer, said side separate board from the side through above-mentioned transformer, the both sides of this top partition board portion extend to above-mentioned framework the back side and below side.
According to this structure; Separating board by the top partition board portion of first demarcation strip of the front and back of isolating transformer and side covers around the transformer; Before and after framework being divided into,, form first air duct of the width corresponding with the width of this transformer in the rear side of transformer.Thus, pass through the gap of the winding portion of transformer, can further improve the cooling effectiveness of transformer from the cooling air of cooling air air entry inspiration.
In addition; The above-mentioned exhaust of the cooling device of the transformer that the cubic formula of the present invention relates to is positioned at rear side with fan center's axis than the center of the fore-and-aft direction of the winding portion of said transformer with cabin fan, and near the mode that the front-end edge of peristome becomes the front-end edge of said transformer is configured.
According to this structure, can discharge the cooling air that arrives rear side through the winding portion of transformer really with cabin fan with exhaust.
In addition, the cooling device of the transformer that the present invention's the 5th mode relates to is characterised in that above-mentioned exhaust is arranged along Width with cabin fan and is provided with many.
According to this structure, can discharge cooling air with cabin fan with many exhausts through the winding of transformer, can improve the air quantity of cooling air, improve the cooling effectiveness of transformer.
Effect of the present invention is described below.
According to the present invention,, can obtain following effect through the simple structure have at least with second demarcation strip of the opening opposing portion of winding portion of above-mentioned transformer only is set.According to structure of the present invention, can be formed with: from second air duct of cooling air air entry through the bottom of above-mentioned second demarcation strip, and the winding portion that passes through above-mentioned transformer, arrive the cooling air passage of above-mentioned exhaust through above-mentioned first air duct again with cabin fan; And from above-mentioned cooling air air entry through the cooling air passage of the gap between the winding portion of transformer to above-mentioned first air duct.Thus, can make cooling air have dead angle ground and on every side, the effect of the cooling effectiveness of the transformer that can be improved through the inside of the winding portion of transformer.And, there is not the narrow and small restriction of cooling air passage, therefore, the air quantity of cooling fan can not reduce, effectively cooling transformer.
Description of drawings
Fig. 1 is the front view of expression an embodiment of the present invention.
Fig. 2 is the front view that unloads front panel of Fig. 1.
Fig. 3 is the sectional view of the A-A line of Fig. 2.
Fig. 4 is the sectional view of the B-B line of Fig. 2.
Fig. 5 is the sectional view of the C-C line of Fig. 4.
Fig. 6 is the sectional view identical with Fig. 4 of expression variation of the present invention.
Symbol description
1 framework
The 1a front panel
The 1b rear board
The 1c top panel
The 1d bottom panel
The 1e Left-Hand Panel
The 1f right panel
2 main circuit transformers
The 2a base portion
2b top
3 shutter door
4a, 4b cooling air air entry
6 first demarcation strips
6a top partition board portion
6b～6e side sections partition board portion
7 first air ducts
Cabin fan is used in 8a, 8b exhaust
10 second demarcation strips
11 peristomes
12 second air ducts
13 the 3rd demarcation strips
14 peristomes.
Embodiment
Below, with reference to the description of drawings embodiment of the present invention.
Fig. 1～Fig. 5 is the figure of expression first embodiment of the invention.
Among the figure, 1 is framework (dish), and this framework 1 forms rectangular shape by front panel 1a, rear board 1b, top panel 1c, bottom panel 1d, Left-Hand Panel 1e and right panel 1f.Substantial middle portion in this framework 1 is so that the state that the Lu of winding portion of three-phase, Lv and Lw broad ways are arranged is taken in the main circuit transformer 2 of three-phase.
The front panel 1a of framework 1 up and down two layers be provided with two row shutter door 3U, 3L along Width; The corresponding corresponding position of base portion 2a of pars intermedia at the Lu of winding portion shutter door 3L and main circuit transformer 2, Lv and the Lw of lower floor is formed with cooling air air entry 4a and 4b.Each personal mesh members 5 of above-mentioned cooling air air entry 4a and 4b covers.
In addition, the mode with around the central portion of the fore-and-aft direction that surrounds the inner main circuit transformer 2 of framework 1 disposes first demarcation strip 6, and separate the front and back of 6 pairs of frameworks 1 of this first demarcation strip.This demarcation strip 6 forms the U word shape of the central portion that is the fore-and-aft direction that surrounds main circuit transformer 2 when overlooking through top partition board portion 6a and connected side sections partition board portion 6b and 6c.
Top partition board portion 6a comprises central board 6d, bending board 6e and preceding board 6f; The top of the main circuit transformer 2 in the centre position of the fore-and-aft direction of the lower end of said central board 6d and framework 1 has specified gap g1 ground relatively; And extend to the Left-Hand Panel 1e and the right panel 1f of framework 1; Said bending board 6e bending forwards above the board 6d of these central authorities is extended, and said preceding board 6f arrives the top panel 1c of framework 1 to the top from this bending board 6e front end.In addition, the right ends that the medial surface of side sections partition board portion 6b and 6c forms the partition board portion 6a from top separates specified gap with respect to the left and right end portions of main circuit transformer 2 extends downwards, and arrives the width of Left-Hand Panel 1e and right panel 1f.
And, form first air duct 7 by the rear side of top partition board portion 6a, side sections partition board portion 6b, 6c and the main circuit transformer 2 of first demarcation strip 6.
In addition, the position relative with first air duct 7 at the top panel 1c of framework 1 is equipped with two exhausts with cabin fan 8a, 8b.Above-mentioned exhaust is as shown in Figure 4 separately with cabin fan 8a, 8b, and the axis Lf of fan center slightly near rear side, with the mode of front-end edge near the front-end edge of main circuit transformer 2, is provided in top panel 1c than the middle position of the fore-and-aft direction of main circuit transformer 2.
In addition, the base portion 2a side of the main circuit transformer 2 in framework 1 is equipped with second demarcation strip 10, its above-below direction with for example downside area less mode separate cooling air air entry 4a and 4b, and the base portion 2a of main circuit transformer 2 is separated up and down.As shown in Figure 3, this second demarcation strip 10 is formed with peristome 11, and when the outer peripheral face of the secondary winding L2 of each Lu～Lw of winding portion of perspective main circuit transformer 2, this peristome 11 separates tolerances ground relatively with respect to above-mentioned outer peripheral face.Therefore, side forms second air duct 12 below second demarcation strip 10.
In addition, the top 2b side of the main circuit transformer 2 in framework 1 sets the 3rd demarcation strip 13 of the top 2b that separates main circuit transformer 2 up and down.The 3rd demarcation strip 13 is also as shown in Figure 3, is formed with peristome 14, and when the outer peripheral face of the secondary winding L2 of each Lu～Lw of winding portion of perspective main circuit transformer 2, this peristome 14 separates tolerances ground relatively with respect to above-mentioned outer peripheral face.
Below, the action of above-mentioned first execution mode is described.
Exhaust is configured in the top of first air duct 7 of the rear side of the main circuit transformer 2 that surrounds with demarcation strip 6 with cabin fan 8a and 8b.And; Winding L 1 of the inside of each Lu～Lw of winding portion of the gap g2 of the pars intermedia of the gap g1 between the upper end of top partition board portion 6a and the main circuit transformer 2 of this first air duct 7 through first demarcation strip 6, each Lu～Lw of winding portion of main circuit transformer 2, the gap g3 of base portion 2a second demarcation strip 10 and main circuit transformer 2, main circuit transformer 2 and space g4 between the secondary winding L2 and the gap g5 between the top 2b the 3rd demarcation strip 13 and main circuit transformer 2 are connected with 4b with the cooling air air entry 4a of the front panel 1a that is provided in framework 1.
Therefore, through driving exhaust, can extraneous air be taken in the framework 1 from cooling air air entry 4a and 4b as cooling air with cabin fan 8a and 8b rotation.
As shown in Figure 4, the cooling air that is taken in the framework 1 is shunted up and down through second demarcation strip 10, and the cooling air of lower side flows to the base portion 2a side of the downside of main circuit transformer 2 through second air duct 12 of the below of second demarcation strip 10.And the mainly winding L 1 of each the Lu～Lw of winding portion through main circuit transformer 2 and the space g4 between the secondary winding L2 from peristome 11 towards the top flow to the top.After this, through the peristome 14 of the 3rd demarcation strip 13 and the gap g5 between the 2b of top, drain to the top.Drain to the front side of the cooling air of this top at first demarcation strip 6, the gap g1 between top partition board portion 6a through first demarcation strip 6 and main circuit transformer 2 top arrives first air duct 7.In addition, drain to the rear side of the cooling air of this top, directly arrive first air duct 7, be discharged to the outside with cabin fan 8a and 8b by exhaust at first demarcation strip 6.
On the other hand, because inaccessible between the left border of main circuit transformer 2 and framework 1 Left-Hand Panel 1e and the 1f by the side sections partition board portion 6b of first demarcation strip 6 and 6c.Therefore; The cooling air that sucks from the upper face side of second demarcation strip 10 of cooling air air entry 4a and 4b is through the front of each Lu～Lw of winding portion of main circuit transformer 2; Arrive first air duct 7 of the rear side of first demarcation strip 6 via the gap g2 between each Lu～Lw of winding portion, be discharged to the outside with cabin fan 8a and 8b by exhaust.
Therefore; Each Lu of winding portion of main circuit transformer 2, Lv and Lw utilize through the cooling air of the spatial portion between its inner winding L 1 and the secondary winding L2 and the front face side through each Lu of winding portion, Lv, Lw and the cooling air through the gap between each Lu of winding portion, Lv, the Lw, are cooled inner and face side two sides.Thus, can be effectively each the Lu～Lw of winding portion as the heat generating part of main circuit transformer 2 be forced cooling.
And cooling air air entry 4a and 4b and exhaust form many with the cooling air passage between cabin fan 8a and the 8b, can increase the aisle spare of cooling air.Therefore, exhaust can not reduce with the air quantity of cabin fan 8a, 8b, can force to cool off main circuit transformer 2 effectively.
And then above-mentioned action effect only can realize through first demarcation strip 6, second demarcation strip 10 and the 3rd demarcation strip 13 are set in framework 1, can make whole constitute oversimplify, suppress framework 1 and maximize, and can suppress manufacturing cost and rise.
Thus, it is the setting of prerequisite that main circuit transformer 2 can carry out with the air blast cooling, can realize miniaturization.In addition, only, therefore, there is no need air entry to be set in the rear side of framework 1 from the cooling air air entry 4a and the 4b inspiration cooling air of the face side that is located at framework 1.In addition, because only from cooling air air entry 4a and the 4b inspiration cooling air of the face side that is located at framework 1, thus there is no need the air-breathing space of using to be set in the rear side of framework 1, so can dispose and make rear side and the wall etc. of framework 1 contact.
Therefore, can realize taking in main circuit transformer 2 framework 1 miniaturization and the downsizing in space is set.
In above-mentioned first example, the situation that is provided with the 3rd demarcation strip 13 is illustrated, still, the present invention is not limited thereto.That is, as shown in Figure 6, also can adopt the structure of omitting the 3rd demarcation strip 13.That is,, can not reduce in a large number though how many cooling airs that imports inner winding L 1 of main circuit transformers 2 and the spatial portion between the secondary winding L2 by second demarcation strip 10 flows to first air duct 7 of the rear side of main circuit transformer 2.In addition, this cooling air can not bring very big influence for the cooling from the inside of main circuit transformer 2, and utilizes the cooling air of first air duct 7 of the rear side that flows through main circuit transformer 2, cools off the rear side of each Lu～Lw of winding portion.Therefore, whole cooling effectiveness can not produce big variation.
In above-mentioned example, the situation that the face side in framework 1 is formed two cooling air air entry 4a and 4b is illustrated, but the present invention is not limited thereto, can form the cooling air air entry more than or three of growing crosswise.
In above-mentioned example, be illustrated use the situation of main circuit transformer as transformer, but the present invention is not limited thereto, the situation that is accommodated in framework 1 for transformer arbitrarily also can be suitable for the present invention.
Claims (5)
1. the cooling device of a transformer is characterized in that, comprising:
Take in the framework of transformer;
First demarcation strip, it with before and after being separated into around the said transformer, forms first air duct in the rear side of this transformer in this framework;
Cabin fan is used in exhaust, and it is relative with said first air duct, and be configured in said framework above;
The cooling air air entry, it is formed on the positive relative position of the base portion with said transformer of said framework; With
Second demarcation strip, it cuts apart said cooling air air entry up and down, and in the base portion side of said transformer with separating up and down around it, and be provided with the opening opposing portion of winding portion with said transformer at least,
The cooling device of this transformer is formed with: from second air duct of said cooling air air entry through the bottom of said second demarcation strip, and the winding portion that passes through said transformer, arrive the cooling air passage of said exhaust through said first air duct again with cabin fan; And arrive the cooling air passage of said first air duct through the gap between the winding portion of transformer from said cooling air air entry.
2. the cooling device of transformer as claimed in claim 1 is characterized in that:
Have the 3rd demarcation strip, the 3rd demarcation strip with separating up and down around it, and has the opening opposing portion of winding portion with said transformer in the upper side of said transformer at least.
3. the cooling device of transformer as claimed in claim 1 is characterized in that:
Said first demarcation strip comprises top partition board portion and side separation board; Said top partition board portion has kink; Separate the gap between this kink and this transformer top; Be provided between top and framework top of said transformer, said side separate board from the side through said transformer, the both sides of this top partition board portion extend to said framework the back side and below side.
4. like the cooling device of each described transformer in the claim 1～3, it is characterized in that:
Said exhaust is positioned at rear side with fan center's axis than the center of the fore-and-aft direction of the winding portion of said transformer with cabin fan, and the front-end edge of peristome is that near the front-end edge of said transformer mode is configured.
5. the cooling device of transformer as claimed in claim 4 is characterized in that:
Said exhaust is arranged along Width with cabin fan and is provided with many.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011-131936 | 2011-06-14 | ||
| JP2011131936A JP5811609B2 (en) | 2011-06-14 | 2011-06-14 | Transformer cooling system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102832015A true CN102832015A (en) | 2012-12-19 |
| CN102832015B CN102832015B (en) | 2016-01-20 |
Family
ID=47335104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210180181.1A Active CN102832015B (en) | 2011-06-14 | 2012-06-01 | The cooling device of transformer |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5811609B2 (en) |
| CN (1) | CN102832015B (en) |
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| CN103824676A (en) * | 2012-11-16 | 2014-05-28 | 苏州御能动力科技有限公司 | Cooling system of transformer and cooling method adopting cooling system |
| CN103943311A (en) * | 2014-03-31 | 2014-07-23 | 昆山达功电子有限公司 | Transformer shell capable of preventing winding set from being overheated |
| CN104319071A (en) * | 2014-11-14 | 2015-01-28 | 镇江船舶电器有限责任公司 | Marine platform self cooling transformer |
| CN106205963A (en) * | 2015-05-25 | 2016-12-07 | 富士电机株式会社 | The chiller of transformator |
| WO2017206115A1 (en) * | 2016-06-01 | 2017-12-07 | 林楚萍 | Housing structure for transformer |
| CN113557581A (en) * | 2019-03-11 | 2021-10-26 | Abb电网瑞士股份公司 | Device for cooling coil |
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| US20160027568A1 (en) * | 2013-07-18 | 2016-01-28 | Mitsubishi Electric Corporation | Air-cooled reactor |
| JP7552446B2 (en) | 2021-03-08 | 2024-09-18 | 株式会社明電舎 | Electrical equipment storage panel |
| CN116403808B (en) * | 2023-05-10 | 2023-09-05 | 广东电网有限责任公司东莞供电局 | Radiating control method, device and equipment of box-type transformer and storage medium |
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| CN103943311B (en) * | 2014-03-31 | 2016-09-14 | 昆山达功电子有限公司 | Prevent the transformer case that coiling group is overheated |
| CN104319071A (en) * | 2014-11-14 | 2015-01-28 | 镇江船舶电器有限责任公司 | Marine platform self cooling transformer |
| CN106205963A (en) * | 2015-05-25 | 2016-12-07 | 富士电机株式会社 | The chiller of transformator |
| WO2017206115A1 (en) * | 2016-06-01 | 2017-12-07 | 林楚萍 | Housing structure for transformer |
| CN113557581A (en) * | 2019-03-11 | 2021-10-26 | Abb电网瑞士股份公司 | Device for cooling coil |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2013004598A (en) | 2013-01-07 |
| JP5811609B2 (en) | 2015-11-11 |
| CN102832015B (en) | 2016-01-20 |
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