JPS59121905A - Winding of naturally cooling induction electric apparatus - Google Patents

Abstract

PURPOSE:To obstruct the local temperature rise of unit windings according to the stagnancy of a cooling medium, and to enable to attain effective natural cooling of a disk winding according to the cooling medium at a naturally cooling induction electric apparatus by a method wherein the number of turns of the conductors of the respective unit windings positioning at height of the widing in the specified extent is set smaller as compared with that of other unit windings positioning outside of the specified extent. CONSTITUTION:At a disk winding 1, the number of turns of conductors 2a to construct the disk winding of respective unit windings 2 stacked in the extent of height shown with (h) on the upper part side in the vertical direction thereof is made smaller as compared with the number of turns of the conductors 2a of other unit windings 2 stacked at the places other than the place in the extent (h) of height. The extent (h) of height is shown by the formula, and it is the extent positioned by the unit windings 2 having the large temperature rise according to stay of a cooling medium. Because the number of turns of the conductors 2a of the respective unit windings 2 positioning at height of the disk winding in the extent (h) of height is small, the heat release value generated when a current is flowed in the conductors 2a is smaller as compared with the heat release value of the other unit windings 2. Accordingly, the average temprature of the unit windings 2 of the whole of the disk winding 1 is reduced, and temperature distribution is averaged at a low level.

Description

【発明の詳細な説明】 〔発明の技術分野〕 本発明は多数の円板状単位巻線を積み重ねてなる円板巻
線を備え、冷却媒体を自然循環させて各単位巻線を冷却
する自然冷却誘導電器巻線に関する。[Detailed Description of the Invention] [Technical Field of the Invention] The present invention includes a disc winding formed by stacking a large number of disc-shaped unit windings, and a natural cooling system that cools each unit winding by naturally circulating a cooling medium. Concerning cooling induction electric windings.

〔発明の技術的背景とその問題点〕[Technical background of the invention and its problems]

誘導電器、例えば変圧器に使用される巻線として多数の
円板状単位巻線を積み重ねてなる多層屋の円板巻線がア
シ、この円板巻線における発熱に対する冷却方式は、円
板巻線の内周（ｆｕｌｌに立設した絶縁筒と各単位巻線
との間に構成した垂直通路および各単位巻線の積層間に
構成した水平通路を夫々通して冷却媒体を自然循環させ
ることによシ各単位巻線を冷却するもの妙；採用されて
いる。The windings used in induction electric appliances, for example transformers, are multi-layered disc windings made by stacking a large number of disc-shaped unit windings. The cooling medium is allowed to naturally circulate through the vertical passages constructed between the insulating tubes standing upright on the inner circumference of the wire and each unit winding, and the horizontal passages constructed between the laminated layers of each unit winding. A method is used to cool each unit winding.

第１図は円板巻線の構造を示し、第２図は円板巻線にお
ける冷却媒体の流れを示している。FIG. 1 shows the structure of the disk winding, and FIG. 2 shows the flow of the cooling medium in the disk winding.

図中１は図示しない電器タンクの内部に設けられ且つ多
数の円板状単位巻線２を積み重ねて構成される円板巻線
で、各単位％線２は絶縁被覆された平角導体２ａを円板
状に複数回巻回したものである。円板巻線１の内周側に
は絶縁筒３が立設され、この絶縁筒３と各単位巻線２の
内周側との間に垂直通路４が構成されている。各単位巻
１１２の積層間には図示しないスペーサを介在してあシ
、このスペーサによシ形成される各単位巻線２の積層間
の間隙を利用して巻線径方向に沿う水平通路５が構成し
である。そして、電器タンクの内部には冷却媒体が封入
され、この冷却媒体は第２図で示すように円板巻線１の
下部側から上部側へ向けて垂直通路４および各単位巻線
２間の水平通路５を通シながら上昇する。さらに、上昇
した冷却媒体は電器タンクにダクトヲ介して連通ずる図
示しない放熱器を通過した後に再び電器タンクの下部に
循環する。In the figure, reference numeral 1 denotes a disk winding which is installed inside an electric appliance tank (not shown) and is constructed by stacking a large number of disk-shaped unit windings 2. Each unit % wire 2 is a circular conductor 2a which is coated with insulation. It is wound into a plate shape multiple times. An insulating tube 3 is erected on the inner circumferential side of the disc winding 1, and a vertical passage 4 is formed between this insulating tube 3 and the inner circumferential side of each unit winding 2. A spacer (not shown) is interposed between the laminated layers of each unit winding 112, and a horizontal passage 5 along the winding radial direction utilizes the gap between the laminated layers of each unit winding 2 formed by this spacer. is composed of A cooling medium is sealed inside the electric appliance tank, and this cooling medium flows between the vertical passage 4 and each unit winding 2 from the lower side of the disc winding 1 to the upper side as shown in FIG. It ascends while passing through the horizontal passage 5. Further, the rising coolant passes through a radiator (not shown) that communicates with the electrical tank via a duct, and then circulates back to the lower part of the electrical tank.

なお、図中Ａは単位巻線２の巻回径寸法、Ｂは各単位巻
線２の積層間隙寸法を夫々示している。In the figure, A indicates the winding diameter dimension of the unit winding 2, and B indicates the stacking gap dimension of each unit winding 2.

しかして、本発明の発明者は円板巻線１における冷却方
式において、各単位巻線２に対する冷却状態を観察して
きた結果、次のことが判明した。発明者は上下に積み重
ねた各単位巻線２の中央部の温度を夫々測定し、その温
度測定の結果第３図で示すような各高さ位置にある単位
巻線２の中央部における温度分布が得られた。The inventor of the present invention has observed the cooling state of each unit winding 2 in the cooling method for the disc winding 1, and has found the following. The inventor measured the temperature at the center of each unit winding 2 stacked vertically, and as a result of the temperature measurement, the temperature distribution at the center of the unit winding 2 at each height position as shown in FIG. 3 was obtained. was gotten.

第３図で示される温度分布によれば、円板巻線１の上部
側におけるある高さ範囲に位置する各単位巻線２の中央
部の温度が局部的に高いことが判る。すなわち、垂直通
路４を上昇する冷却媒体が各単位巻線２の内外側面より
水平通路５に流入しようとするが、円板巻線１の垂直方
向における上部側の各単位巻線２の水平通路５の中央部
では冷却媒が滞流して流れにくいためにこの高さ範囲の
各単位巻線２の中央部が良好に冷却されずに局部的に温
度上昇する。従って、この局部的な単位巻線２の温度上
昇によシ円板巻線１全体の平均温度が高くなって冷却効
果が低下し、冷却媒体の温度も上昇してその放熱を行な
うために大形の放熱器を必要とし誘導電器全体が大形に
なる。また、温度が高くなった単位巻線２における導体
の絶縁被覆の劣化をきたすおそれもある。さらに、各円
板巻線２の電流密度が低下する。According to the temperature distribution shown in FIG. 3, it can be seen that the temperature at the center of each unit winding 2 located in a certain height range on the upper side of the disc winding 1 is locally high. That is, the cooling medium rising in the vertical passage 4 tries to flow into the horizontal passage 5 from the inner and outer surfaces of each unit winding 2, but the cooling medium flowing upward in the horizontal passage of each unit winding 2 on the upper side of the disc winding 1 in the vertical direction Since the cooling medium stagnates in the central part of the winding 5 and does not flow easily, the central part of each unit winding 2 in this height range is not cooled well and the temperature locally increases. Therefore, due to this local temperature rise in the unit winding 2, the average temperature of the entire disk winding 1 increases, reducing the cooling effect, and the temperature of the cooling medium also increases, making it necessary to dissipate the heat. This requires a shaped heat sink, making the entire induction electric device large. Furthermore, there is a possibility that the insulation coating of the conductor in the unit winding 2 whose temperature has become high may deteriorate. Furthermore, the current density in each disc winding 2 decreases.

〔発明の目的〕[Purpose of the invention]

本発明は前記事情に鑑みてなされたもので、冷却媒体の
滞溜による局部的な単位巻線の温度上昇を阻止して冷却
媒体による円板巻線の効果的な冷却を行なうことができ
る自然冷却誘導電器巻線を提供するものである。The present invention has been made in view of the above-mentioned circumstances, and is a natural technology that can effectively cool a disc winding with a cooling medium by preventing a local temperature rise in a unit winding due to accumulation of a cooling medium. A cooling induction electric winding is provided.

〔発明の概要〕[Summary of the invention]

本発明の発明者は、円板巻線を冷却する上で局部的な単
位巻線の温度上昇について種々研究を重ねてきたが、円
板巻線において冷却媒体の滞溜によシ温度上昇が大なる
単位巻線が存在する巻線高さ位置が巻線の発熱量の大き
さとの関３２５ｑ＋１３≦ｈ≦３２５ｑ＋３８ 但し、ｑは単位巻線表面の熱流密度ＣＷ／ｃｍ２）、ｈ
は円板巻線の上端高さを１００とした時の単位巻線の高
さ位置である。The inventor of the present invention has conducted various studies on local temperature rises in unit windings when cooling disc windings. The relationship between the height position of the winding where a large unit winding exists and the amount of heat generated by the winding is
is the height position of the unit winding when the upper end height of the disc winding is 100.

すなわち、巻線高さｈが前記の式で示される範囲にある
単位巻線の温度上昇が冷却媒体の滞溜によシ大きくなる
。That is, the temperature rise of a unit winding whose winding height h is within the range shown by the above equation increases due to the accumulation of the cooling medium.

従って、本発明の自然冷却誘導電器巻線は、巻線高さが
前記の式で示される範囲にある各単位巻線の導体の巻回
数を、前記の範囲外にある他の単位巻線のそれに比して
小さく設定することによシ、その単位巻線の発熱量を減
少させるものである。Therefore, in the naturally cooled induction electric appliance winding of the present invention, the number of turns of the conductor of each unit winding whose winding height is within the range shown by the above formula is the same as that of other unit windings whose winding height is outside the above range. By setting it smaller than that, the amount of heat generated by the unit winding can be reduced.

〔発明の実施例〕[Embodiments of the invention]

以下本発明を図面で示す実施例について説明する。 Embodiments of the present invention illustrated in the drawings will be described below.

第４図は本発明の誘導電器巻線の一実施例を示す縦断面
図、第５図は巻線における冷却媒体の流れを示す拡大断
面図である。FIG. 4 is a longitudinal sectional view showing one embodiment of the induction electric device winding of the present invention, and FIG. 5 is an enlarged sectional view showing the flow of a cooling medium in the winding.

図において１は円板巻線、２は円板状単位巻線、３は絶
縁筒、４は垂直通路、５は水平通路である。In the figure, 1 is a disk winding, 2 is a disk-shaped unit winding, 3 is an insulating cylinder, 4 is a vertical passage, and 5 is a horizontal passage.

円板巻線１においてその垂直方向の上部［０における図
中りで示される高さ範囲にあって積み重ねられる各単位
巻線２、すなわち高さ範ＩＨｈに属する巻線高さ位置に
ある各単位巻線２は、巻線を構成する導体２ａの巻回数
を、高さ範囲り以外の箇所に積み重ねられる他の単位巻
線−２における導体２ａの巻回数に比して小さくしであ
る。ここで、高さ範囲りは前記したように、３２５ｑ＋
１３≦ｈ≦３２５　ｑ＋３８で表わされるものであシ、
冷却媒体の滞溜により温度上昇が大なる単位巻線２が位
置する範囲である。すなわち、従来温度上昇が犬なる巻
線高さ位置にある各単位巻線２の導体巻回数を小さくし
である。導体巻回数を少なくした単位者８２は、他の単
位巻線２と巻回径を合わせるために導体巻回数の減少分
に応じて絶縁物６を巻回する構造が一般的である。Each unit winding 2 stacked in the height range shown in the figure at the upper part [0 in the vertical direction of the disc winding 1, that is, each unit located at a winding height position belonging to the height range IHh. In the winding 2, the number of turns of the conductor 2a constituting the winding is smaller than the number of turns of the conductor 2a in another unit winding 2 which is stacked at a location other than the height range. Here, as mentioned above, the height range is 325q+
It is expressed as 13≦h≦325 q+38,
This is the range where the unit winding 2 is located where the temperature rise is large due to accumulation of cooling medium. That is, the number of turns of the conductor in each unit winding 2, which is located at a winding height position where conventional temperature rise is small, is reduced. The unit 82 with a reduced number of conductor turns generally has a structure in which the insulator 6 is wound in accordance with the decrease in the number of turns of the conductor in order to match the winding diameter with other unit windings 2.

このように構成した円板巻線１において、高さ範囲りの
巻線高さ位置にある各単位巻線２は、導体２の巻回数が
小さいために、導体２に通電した時に生じる発熱量が、
他の単位巻線２の発熱量に比して小さい。In the disk winding 1 configured in this way, each unit winding 2 located at a winding height within the height range has a small number of turns of the conductor 2, so the amount of heat generated when the conductor 2 is energized is small. but,
The amount of heat generated is smaller than that of other unit windings 2.

そして、第ｒ図で示すように冷却媒体が各単位巻線２間
の水平通路５に入シこみながら円板巻線１の下部側から
上部側べ上昇して各単位者ｆａ２の冷却が行なわれる。Then, as shown in Fig. R, the cooling medium enters the horizontal passage 5 between each unit winding 2 and rises from the lower side to the upper side of the disc winding 1 to cool each unit fa2. It will be done.

この時、円板巻線１の高さ範囲りにある各単位者ａ２の
間の各水□平過路５において冷却媒体が通路中央部で滞
溜しても、高さ範囲りにある各単位巻線２の発熱量が小
さいために、これらの単位者Ｍ２の温度が他の単位者１
ｉＡ２に比して局部的に大きく上昇することがない。こ
のため、冷却媒体が水平通路５で滞溜する巻線高さ位置
にある各単位巻線２の局部的な温度上昇を抑制できる。At this time, even if the cooling medium accumulates in the center of the passage in each water □ flat passage 5 between each unit a2 within the height range of the disc winding 1, each unit within the height range Since the heat generation amount of winding 2 is small, the temperature of these units M2 is lower than that of other units 1.
There is no large local increase compared to iA2. Therefore, it is possible to suppress a local temperature rise in each unit winding 2 located at a winding height position where the cooling medium accumulates in the horizontal passage 5.

従って、円板巻Ｍ１全体の単位巻線２の平均温度が低下
し、低いレベルで温度分布が平均化される。Therefore, the average temperature of the unit winding 2 of the entire disc winding M1 decreases, and the temperature distribution is averaged at a low level.

第６図は本発明における円板巻線の各単位巻線２の中央
部での温度分布を示している。この温度分布によれば各
単位巻線２の温度が低いレベルで平均化されていること
が明瞭に判る。FIG. 6 shows the temperature distribution at the center of each unit winding 2 of the disc winding according to the present invention. According to this temperature distribution, it is clearly seen that the temperatures of each unit winding 2 are averaged at a low level.

〔発明の効果〕〔Effect of the invention〕

本発明の自然冷却誘導電器巻線は以上説明したように、
水平通路での冷却媒体の滞溜による局部的な単位巻線の
温度上昇を簡単な手段で抑制−し、円板巻線における温
度分布を平均化し、冷却効率を高めることができる。従
って、冷却媒体放熱用の大形の放熱器をしける必要がな
く電器の大形化を防止でき、また単位巻線の導体の絶縁
被覆の劣化を防止でき、単位巻線の電流密度も増加でき
る。As explained above, the naturally cooled induction electric winding of the present invention has the following features:
It is possible to suppress the local temperature rise of the unit winding due to accumulation of cooling medium in the horizontal passage by simple means, average the temperature distribution in the disk winding, and improve cooling efficiency. Therefore, there is no need to install a large heat radiator for cooling medium heat dissipation, and it is possible to prevent the size of the electric appliance from increasing. Also, deterioration of the insulation coating of the conductor of the unit winding can be prevented, and the current density of the unit winding can also be increased. .

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は従来の誘導電器巻線の一例を示す縦断面図、第
２図は従来の巻線における冷却媒体の流れを示す断面図
、第３図は従来の巻線における単位巻線の温度分布を示
す線図、第４図は本発明の誘導電器巻線の一実施例を示
す縦断面図、第５図は同実施例の巻線における冷却媒体
の流れを示す断面図、第６図は同実施例の巻線における
単位巻線の温度分布を示す線図である。 １・・・円板巻線、２・・・単位巻線、３・・・絶縁筒
、４・・・垂直通路、５・・・水平通路、６・・・絶縁
物。 出願人代理人　　弁理士　鈴　江　武　彦第１図 １ 第２図 第　３　は 囁度ヱオ　（°。） 第４図 第５図 第６図 求度工胃（ａＣ）Fig. 1 is a longitudinal cross-sectional view showing an example of a conventional induction electric winding, Fig. 2 is a cross-sectional view showing the flow of cooling medium in the conventional winding, and Fig. 3 is the temperature of a unit winding in the conventional winding. FIG. 4 is a longitudinal cross-sectional view showing an embodiment of the induction electric device winding of the present invention; FIG. 5 is a cross-sectional view showing the flow of the cooling medium in the winding of the same embodiment; FIG. 6 is a diagram showing the distribution. is a diagram showing the temperature distribution of a unit winding in the winding of the same example. DESCRIPTION OF SYMBOLS 1... Disk winding, 2... Unit winding, 3... Insulating tube, 4... Vertical passage, 5... Horizontal passage, 6... Insulator. Applicant's Representative Patent Attorney Takehiko Suzue Figure 1 1 Figure 2 3 is a whisper (°.) Figure 4 Figure 5 Figure 6 Figure 6 (aC)

Claims (1)

【特許請求の範囲】 多数の円板状単位巻線を積み重ねてなる円板巻線を備え
、この円板巻線の内周側に立設した絶縁筒と各単位巻線
との間に構成した垂直通路および各単位巻線の積層間に
構成した水平通路を通して冷却媒体を自然循環させるも
のにおいて、単位巻線の高さ位置りが１ ３２５ｑ＋１３≦ｈ≦３１５４＋３８ （但し、ｑは単位巻線表面の熱流密度（Ｗ／ｃｒｎ）、
ｈは円板巻線の上端高さを１００とした時の単位巻線の
高さ位置）の範囲に入る各単位巻線の導体巻回数を、前
記の範囲に入らない他の単位巻線の導体巻回数に比して
小さくしてなる自然冷却誘導電器巻線。[Scope of Claims] A disc winding formed by stacking a large number of disc-shaped unit windings, and configured between each unit winding and an insulating cylinder erected on the inner periphery of the disc winding. In the case where the cooling medium is naturally circulated through vertical passages formed between the layers of each unit winding and horizontal passages constructed between the laminated layers of each unit winding, the height position of the unit winding is 1325q+13≦h≦3154+38 (however, q is the surface of the unit winding). heat flow density (W/crn),
h is the number of conductor turns of each unit winding that falls within the range (height position of the unit winding when the upper end height of the disc winding is 100), and the number of conductor turns of the other unit windings that do not fall within the above range. A naturally cooled induction electric wire with a smaller number of turns than the conductor.