JP2741876B2 - Cooling structure of non-combustible transformer winding - Google Patents
Cooling structure of non-combustible transformer windingInfo
- Publication number
- JP2741876B2 JP2741876B2 JP63257179A JP25717988A JP2741876B2 JP 2741876 B2 JP2741876 B2 JP 2741876B2 JP 63257179 A JP63257179 A JP 63257179A JP 25717988 A JP25717988 A JP 25717988A JP 2741876 B2 JP2741876 B2 JP 2741876B2
- Authority
- JP
- Japan
- Prior art keywords
- transformer winding
- windings
- cooling structure
- combustible
- gap
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Coils Of Transformers For General Uses (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は不燃変圧器巻線の冷却構造に係り、特に、不
燃性冷媒としてパーフルオロカーボン液を用いたものに
好適な不燃変圧器巻線の冷却構造に関する。Description: TECHNICAL FIELD The present invention relates to a cooling structure for a non-combustible transformer winding, and more particularly, to a non-combustible transformer winding suitable for use of a perfluorocarbon liquid as a non-combustible refrigerant. Related to cooling structure.
従来の変圧器巻線の冷却構造は、特開昭57−147213号
公報に記載のように、半径方向の冷却路（以下、水平ダ
クトと呼ぶ）の幅寸法Ｈと、軸方向の冷却路（以下、垂
直ダクトと呼ぶ）の幅寸法Ｖとが、H/V≦0.3となるよう
に構成されていた。As described in JP-A-57-147213, a conventional cooling structure for a transformer winding has a width dimension H of a radial cooling path (hereinafter, referred to as a horizontal duct) and an axial cooling path (hereinafter, referred to as an axial cooling path). The width dimension V of the vertical duct is hereinafter referred to as H / V ≦ 0.3.
上記従来技術は、冷媒として変圧器油を対象としてい
るが、パーフルオロカーボン液はその物性値が油と著し
く異なり（油に対し動粘性係数1/10、比熱1/2、密度２
倍等）、さらさらと流れ易い性質のため、従来の条件
（H/V≦0.3）をそのまま適用できない。The above prior art is directed to transformer oil as a refrigerant, but the perfluorocarbon liquid has significantly different physical properties from oil (kinetic viscosity coefficient 1/10, specific heat 1/2, density 2
), The conventional condition (H / V ≦ 0.3) cannot be applied as it is due to the property of flowing easily.
また、上記従来技術は、水平ダクトの具体的な寸法に
ついて考慮されておらず、水平ダクトの間隙を極端に小
さくすると冷媒の圧力損失が急増する問題があった。Further, in the above-mentioned prior art, the specific dimensions of the horizontal duct are not considered, and there is a problem that the pressure loss of the refrigerant rapidly increases when the gap between the horizontal ducts is extremely reduced.
本発明は上述の点に鑑みなされたもので、その目的と
するところは、不燃性溶媒としてパーフルオロカーボン
液を用いたものであっても、圧力損失の増大を起こさせ
ずに、多層の水平ダクトへパーフルオロカーボン液を均
一に分配することのできる不燃変圧器巻線の冷却構造を
提供するにある。The present invention has been made in view of the above points, and its object is to provide a multi-layer horizontal duct without causing an increase in pressure loss even when a perfluorocarbon liquid is used as a nonflammable solvent. It is an object of the present invention to provide a cooling structure for a non-combustible transformer winding capable of uniformly distributing a perfluorocarbon liquid.
本発明は上記目的を達成するために、巻線間の間隙で
ある水平ダクトの間隙Ｈが、1mm≦Ｈ≦3mmとなるように
前記巻線を配置したことを特徴とする。In order to achieve the above object, the present invention is characterized in that the windings are arranged such that the gap H between the horizontal ducts, which is the gap between the windings, satisfies 1 mm ≦ H ≦ 3 mm.
パーフルオロカーボン液は、変圧器油に比べて動粘度
係数が約一割であり、さらさらと流れ易い性質がある。
そのため、水平ダクトの間隙を従来と同様に大きくした
場合は、出口付近の水平ダクト内のパーフルオロカーボ
ン液の流れが偏り、入口付近でパーフルオロカーボン液
の流れない水平ダクトの上下の巻線が過熱したり、パー
フルオロカーボン液が沸騰する恐れがあった。また、水
平ダクトの間隙を小さくすると、流れが均一に分配でき
るようになるが、さらに小さくし、ある寸法を超えると
急激に圧力損失が増大し、巻線同士が近づき過ぎて絶縁
破壊したりする。The perfluorocarbon liquid has a kinematic viscosity coefficient of about 10% as compared with the transformer oil, and has a property of flowing smoothly.
Therefore, if the gap between the horizontal ducts is increased as before, the flow of the perfluorocarbon liquid in the horizontal duct near the outlet will be uneven, and the upper and lower windings of the horizontal duct where the perfluorocarbon liquid does not flow near the inlet will overheat. Or the perfluorocarbon liquid may boil. Also, if the gap between the horizontal ducts is made small, the flow can be distributed evenly, but if it is made smaller, the pressure loss will increase suddenly if it exceeds a certain size, and the windings will be too close to each other, causing insulation breakdown or the like. .
そこで、パーフルオロカーボン液を用いた場合には、
巻線間の間隙である水平ダクトの間隙Ｈを1mm≦Ｈ≦3mm
にすると、圧力損失を急増させることなく、流れを均一
に分配することができる。Therefore, when a perfluorocarbon liquid is used,
1 mm ≦ H ≦ 3 mm
Thus, the flow can be uniformly distributed without a sudden increase in pressure loss.
以下、本発明の一実施例を第１図乃至第５図に基づい
て説明する。Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 5.
該図に示すごとく、パーフルオロカーボン液５は、上
流の折流区から垂直ダクト２へ流入し、多層の水平ダク
ト１へ分配される。分配されたパーフルオロカーボン液
５は、水平ダクト１の上下の巻線３を冷却した後、出口
側の垂直ダクト２へ集められ、下流側の折流区へ流化す
る。ここで、水平ダクト１の間隙Ｈを一定とし、0.5mm
≦Ｈ≦3mmとなるように配置した。図中４は折流板であ
る。As shown in the figure, the perfluorocarbon liquid 5 flows into the vertical duct 2 from the upstream flow section and is distributed to the multilayer horizontal duct 1. The distributed perfluorocarbon liquid 5 cools the upper and lower windings 3 of the horizontal duct 1, is collected in the vertical duct 2 on the outlet side, and flows into the downstream flow section. Here, the gap H of the horizontal duct 1 is fixed, and 0.5 mm
≦ H ≦ 3 mm. In the figure, reference numeral 4 denotes a folding plate.
第２図にＨ＝2mmとＨ＝5mmの場合の各水平ダクト内の
流速Ｕの分布を示した。Ｈ＝5mmでは、出口付近に流れ
が偏り入口付近の流速が小さくなるのに対して、Ｈ＝2m
mでは、均一に流量を分配することができる。FIG. 2 shows the distribution of the flow velocity U in each horizontal duct when H = 2 mm and H = 5 mm. In the case of H = 5 mm, the flow is biased near the outlet and the flow velocity near the inlet decreases, whereas H = 2 m
At m, the flow rate can be evenly distributed.
第３図に巻線３とパーフルオロカーボン液５の温度差
である温度上昇の分布を示した。Ｈ＝5mmでは、入口付
近の温度上昇が大きくなり、パーフルオロカーボン液５
が発泡（絶縁破壊の原因）する恐れがあるが、Ｈ＝2mm
では、温度上昇を小さく均一にすることができる。FIG. 3 shows a distribution of temperature rise, which is a temperature difference between the winding 3 and the perfluorocarbon liquid 5. In the case of H = 5 mm, the temperature rise near the inlet was large and the perfluorocarbon liquid 5
May foam (cause of dielectric breakdown), but H = 2mm
Thus, the temperature rise can be made small and uniform.
第４図に垂直ダクト間隙Ｈと偏流率Umax/Umeanの関係
を示した。Ｈ＜2mmでは偏流率の変化は小さいが、Ｈ≧2
mmではＨの増加と共に偏流率が緩やかに増加し、流れが
均一に分配されなくなることを示している。FIG. 4 shows the relationship between the vertical duct gap H and the drift rate Umax / Umean . When H <2 mm, the change in drift rate is small, but H ≧ 2
In mm, the drift rate gradually increases with an increase in H, indicating that the flow is not uniformly distributed.
第５図に水平ダクト間隙Ｈと折流区あたり圧力損失
（mm液柱）との関係を示した。圧力損失はＨ≧2mmでは
ほぼ一定であるが、Ｈ≦1mmになると急増する。FIG. 5 shows the relationship between the horizontal duct gap H and the pressure loss per liquid flow section (mm liquid column). The pressure loss is substantially constant when H ≧ 2 mm, but increases sharply when H ≦ 1 mm.
このようにパーフルオロカーボン液５を用いた場合、
多層の水平ダクトへ流量を均一に分配し、圧力損失を小
さくする効果がある。Thus, when the perfluorocarbon liquid 5 is used,
This has the effect of uniformly distributing the flow rate to the multi-layered horizontal duct and reducing the pressure loss.
本発明の他の実施例を第６図乃至第８図に示した。該
図は、水平ダクトの間隙を入口からＨとH1（Ｈ＞H1）と
に交互に配置し、出口をH1とした実施例である。Another embodiment of the present invention is shown in FIGS. This figure shows an embodiment in which the gaps of the horizontal duct are alternately arranged from the inlet to H and H 1 (H> H 1 ), and the outlet is H 1 .
第６図にＨ＝3mm、H1/H＝１、2/3、1/3の流速分布を
示した。H1/H＝１では入口から出口に近くになるにつ
れ、Ｕがほぼ直線的に増加しているのに対し、H1/H＝2/
3、1/3では間隙の大きいＨでＵが大きく、間隙の小さな
H1でＵが小さくなる。しかし、第７図に示すように、温
度上昇はH1/H＝１に比べH1/H＝2/3、1/3が小さく、平均
化されている。これは巻線３が上側の水平ダクトと下側
の水平ダクトにより冷却され、巻線３の温度が平均化さ
れるためである。H = 3 mm in Figure 6, showing the flow velocity distribution of H 1 / H = 1,2 / 3,1 / 3. H 1 / H = As 1, from the inlet will close the outlet, whereas U is increasing substantially linearly, H 1 / H = 2 /
In 3 and 1/3, U is large and H is large and the gap is small.
U is smaller at H 1. However, as shown in FIG. 7, the temperature rise is small H 1 / H = 2 / 3,1 / 3 compared with the H 1 / H = 1, are averaged. This is because the winding 3 is cooled by the upper horizontal duct and the lower horizontal duct, and the temperature of the winding 3 is averaged.
第８図にH1/Hと圧力損失の関係を示した。圧力損失は
H1/H1.5で最小になり、第５図に比べ全体的に小さ
い。FIG. 8 shows the relationship between H 1 / H and pressure loss. The pressure loss is
Min becomes at H 1 /H1.5, generally smaller than in FIG. 5.
本実施例によれば、巻線の温度上昇を更に均一化、及
び低下することができる。また、圧力損失を低下させる
効果もある。According to the present embodiment, the temperature rise of the winding can be further uniformed and reduced. There is also an effect of reducing pressure loss.
第９図乃至第11図は他の実施例である。本実施例で
は、流れを均一化するため、水平ダクト１の内の流動抵
抗となる凸部６を配置している。また、絶縁抵抗の増大
のため、水平ダクト11を絶縁膜７で仕切っている。なぜ
なら、パーフルオロカーボン液中に浮遊物（ごみ）９が
あると、水平ダクト１の間隙Ｈを小さくした場合、浮遊
物９が巻線電界の強い部分に集められ、巻線間に浮遊物
９の橋ができて絶縁破壊の原因となるからである。9 to 11 show another embodiment. In this embodiment, in order to make the flow uniform, a convex portion 6 serving as a flow resistance in the horizontal duct 1 is arranged. The horizontal duct 11 is partitioned by the insulating film 7 to increase the insulation resistance. This is because if there is suspended matter (dust) 9 in the perfluorocarbon liquid, when the gap H between the horizontal ducts 1 is reduced, the suspended matter 9 is collected in a portion where the winding electric field is strong, and the suspended matter 9 is located between the windings. This is because a bridge is formed and causes dielectric breakdown.
本実施例によれば、パーフルオロカーボン液の流れを
均一に分配させ、巻線の絶縁耐力を向上させる効果があ
る。According to this embodiment, there is an effect that the flow of the perfluorocarbon liquid is evenly distributed, and the dielectric strength of the winding is improved.
第12図は、水平ダクト１の出口にスリット８を設け、
水平ダクト１の流動抵抗を増加させ、流量分配を均一化
させた例である。FIG. 12 shows a slit 8 provided at the exit of the horizontal duct 1,
This is an example in which the flow resistance of the horizontal duct 1 is increased and the flow distribution is made uniform.
以上説明した本発明の不燃変圧器巻線の冷却構造によ
れば、巻線間の間隙である水平ダクトの間隙Ｈが、1mm
≦Ｈ≦3mmとなるように前記巻線を配置したものである
から、流路の圧力損失を増大させることなく、水平ダク
ト内の流れを均一化することができる。According to the cooling structure of the non-combustible transformer winding of the present invention described above, the gap H between the horizontal ducts as the gap between the windings is 1 mm.
Since the windings are arranged so as to satisfy ≦ H ≦ 3 mm, the flow in the horizontal duct can be made uniform without increasing the pressure loss in the flow path.
第１図は本発明の不燃変圧器巻線の冷却構造の一実施例
を示す流路断面図、第２図乃至第５図は第１図の説明
図、第６図乃至第８図は他の実施例、及びその説明図、
第９図乃至第12図は更に他の実施例の説明図である。 １……水平ダクト、２……垂直ダクト、３……巻線、４
……折流板、５……パーフルオロカーボン液、６……凸
部、７………絶縁膜、８……スリット、９……浮遊物。FIG. 1 is a cross-sectional view of a flow path showing one embodiment of a cooling structure for a non-combustible transformer winding of the present invention, FIGS. 2 to 5 are explanatory views of FIG. 1, and FIGS. Example, and its explanatory diagram,
9 to 12 are explanatory views of still another embodiment. 1 ... horizontal duct, 2 ... vertical duct, 3 ... winding, 4
... Folding plate, 5... Perfluorocarbon liquid, 6... Convex part, 7... Insulating film, 8... Slit, 9.
Claims (5)
燃性冷媒としてパーフルオロカーボン液を用いて冷却さ
れる変圧器巻線、該変圧器巻線の前記巻線間の間隙であ
り、半径方向の冷却路となる水平ダクト、前記変圧器巻
線の軸方向の冷却路となる垂直ダクトよりなる不燃変圧
器巻線の冷却構造において、 前記巻線間の間隙である水平ダクトの間隙Ｈが、1mm≦
Ｈ≦3mmとなるように前記巻線を配置したことを特徴と
する不燃変圧器巻線の冷却構造。A transformer winding comprising windings stacked in a plurality of stages and cooled by using a perfluorocarbon liquid as a nonflammable refrigerant, a gap between the windings of the transformer winding, In the cooling structure of a non-combustible transformer winding composed of a horizontal duct serving as a cooling path in the direction and a vertical duct serving as a cooling path in the axial direction of the transformer winding, a gap H between the horizontal ducts as a gap between the windings is provided. , 1mm ≦
A cooling structure for a non-combustible transformer winding, wherein the windings are arranged so that H ≦ 3 mm.
間隙をＨとH1（Ｈ＞H1）とし、この間隙ＨとH1が交互に
なるように前記巻線を配置したことを特徴とする特許請
求の範囲第１項記載の不燃変圧器巻線の冷却構造。2. The method according to claim 1, wherein the gap between the windings is H and H 1 (H> H 1 ), and the windings are arranged so that the gaps H and H 1 alternate. 2. The cooling structure for a non-combustible transformer winding according to claim 1, wherein:
順次前記ＨとH1を交互にし、前記パーフルオロカーボン
液の出口部をH1としたことを特徴とする特許請求の範囲
第２項記載の不燃変圧器巻線の冷却構造。3. alternated sequentially the H and H 1 from the inflow portion of the perfluorocarbon liquid, non-combustible of Claims second term, wherein the outlet portion of the perfluorocarbon liquid was H 1 Transformer winding cooling structure.
ら延びて流動抵抗となる凸部を複数個設け、かつ、相対
向する巻線側から延びる該凸部間に絶縁膜をはさみ、相
対向する巻線を分離したことを特徴とする特許請求の範
囲第１項記載の不燃変圧器巻線の冷却構造。4. A horizontal duct having a plurality of projections extending from opposing windings and serving as flow resistance, and an insulating film interposed between the projections extending from the opposing windings. 2. The cooling structure for a non-combustible transformer winding according to claim 1, wherein the windings facing each other are separated.
ことを特徴とする特許請求の範囲第１項記載の不燃変圧
器巻線の冷却構造。5. The cooling structure for a non-combustible transformer winding according to claim 1, wherein a throttle portion is provided at an outlet of said horizontal duct.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63257179A JP2741876B2 (en) | 1988-10-14 | 1988-10-14 | Cooling structure of non-combustible transformer winding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63257179A JP2741876B2 (en) | 1988-10-14 | 1988-10-14 | Cooling structure of non-combustible transformer winding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02105506A JPH02105506A (en) | 1990-04-18 |
| JP2741876B2 true JP2741876B2 (en) | 1998-04-22 |
Family
ID=17302781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63257179A Expired - Lifetime JP2741876B2 (en) | 1988-10-14 | 1988-10-14 | Cooling structure of non-combustible transformer winding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2741876B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2508994B2 (en) * | 1990-11-01 | 1996-06-19 | 株式会社東芝 | Induction electric disk winding |
| JP4974992B2 (en) * | 2008-09-30 | 2012-07-11 | 三菱電機株式会社 | Sorashin reactor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57147213A (en) * | 1981-03-09 | 1982-09-11 | Toshiba Corp | Winding for transformer |
| JPS6316414B2 (en) * | 1984-11-09 | 1988-04-08 | Dow Corning |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6316414U (en) * | 1986-07-18 | 1988-02-03 |
-
1988
- 1988-10-14 JP JP63257179A patent/JP2741876B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57147213A (en) * | 1981-03-09 | 1982-09-11 | Toshiba Corp | Winding for transformer |
| JPS6316414B2 (en) * | 1984-11-09 | 1988-04-08 | Dow Corning |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02105506A (en) | 1990-04-18 |
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