JPH02105506A - Incombustible transformer winding structure - Google Patents
Incombustible transformer winding structureInfo
- Publication number
- JPH02105506A JPH02105506A JP25717988A JP25717988A JPH02105506A JP H02105506 A JPH02105506 A JP H02105506A JP 25717988 A JP25717988 A JP 25717988A JP 25717988 A JP25717988 A JP 25717988A JP H02105506 A JPH02105506 A JP H02105506A
- Authority
- JP
- Japan
- Prior art keywords
- flow
- duct
- horizontal
- horizontal duct
- winding structure
- 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.)
- Granted
Links
- 238000004804 winding Methods 0.000 title claims abstract description 26
- 239000003507 refrigerant Substances 0.000 claims description 23
- 238000001816 cooling Methods 0.000 abstract description 4
- TXEYQDLBPFQVAA-UHFFFAOYSA-N tetrafluoromethane Chemical compound FC(F)(F)F TXEYQDLBPFQVAA-UHFFFAOYSA-N 0.000 abstract description 3
- 238000011144 upstream manufacturing Methods 0.000 abstract description 2
- 238000005057 refrigeration Methods 0.000 abstract 4
- 238000005452 bending Methods 0.000 abstract 2
- 230000005465 channeling Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
Landscapes
- Coils Of Transformers For General Uses (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は変圧器に係り、特に、不燃性冷媒を用いた変圧
器の巻線構造に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a transformer, and particularly to a winding structure of a transformer using a nonflammable refrigerant.
従来の装置は、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、水平ダクトと称す）
の幅寸法Ｈと、軸方向の冷却路（以下、垂直ダクトと称
す）の幅寸法ＶとがＴ−Ｉ ／ ＶＳ２．３となるよう
に構成していた。The conventional device uses a radial cooling path (hereinafter referred to as a horizontal duct) as described in Japanese Patent Application Laid-Open No. 57-147213.
The width H of the duct and the width V of the cooling path in the axial direction (hereinafter referred to as the vertical duct) were configured to be T-I/VS2.3.
上記従来技術は冷媒として変圧器油を対象としていると
思われるが、不燃性冷媒はその物性値が油と著しく異な
り（油に対と動粘性係数１／１０゜比熱１／２、密度二
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 conventional technology seems to target transformer oil as a refrigerant, but the physical properties of nonflammable refrigerants are significantly different from those of oil (kinematic viscosity 1/10°, specific heat 1/2, density twice that of oil). etc.), and due to its smooth and easy-flowing nature, it can be used under conventional conditions (
H/V≦0.3) cannot be applied as is.
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, the above-mentioned conventional technology does not take into consideration the specific dimensions of the horizontal duct, and there is a problem in that when the gap between the horizontal ducts is extremely reduced, the pressure loss of the refrigerant increases rapidly.
本発明の目的は不燃性冷媒を用いた変圧器において、圧
力損失の増大を起こさせずに、多層の水平ダクトへ冷媒
を均一に分配する巻線構造を提供することにある。An object of the present invention is to provide a winding structure for a transformer using a nonflammable refrigerant, which uniformly distributes the refrigerant to a multilayer horizontal duct without causing an increase in pressure loss.
上記目的は、水平ダクトの間隙Ｈを１ ｍｎ≦Ｈ≦３画
とすることにより達成される。The above object is achieved by setting the gap H between the horizontal ducts to 1 mn≦H≦3 strokes.
不燃性冷媒は変圧器油に比べて動粘度係数が約−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
の水平ダクト内の冷媒の流れが偏り、入口付近で冷媒の
流れない水平ダクトの上・下の巻線が過熱したり、冷媒
が沸臆する恐れがあった。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
らに小さくシ、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 nonflammable refrigerant has a kinematic viscosity coefficient that is approximately -00% lower than that of transformer oil, and has the property of flowing easily. Therefore, if the gap between the horizontal ducts is made as large as before, the flow of refrigerant in the horizontal duct near the outlet will be biased, and the upper and lower windings of the horizontal duct, where refrigerant does not flow near the inlet, may overheat. There was a risk that the refrigerant would boil over. Also, if the gap in the horizontal duct is made smaller, the flow can be distributed evenly, but if the gap is made even smaller and exceeds a certain dimension, the pressure loss will increase rapidly, and the windings may get too close together, causing dielectric breakdown. .
そこで、不燃性冷媒を用いた場合は、水平ダクトの間隙
Ｈを１ｍ≦Ｈ≦３ｍ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 nonflammable refrigerant is used, by setting the gap H of the horizontal duct to 1 m≦H≦3 m, the flow can be uniformly distributed without rapidly increasing the pressure loss.
以下、本発明の一実施例を第１図ないし第５図により説
明する。An embodiment of the present invention will be described below with reference to FIGS. 1 to 5.
冷媒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。分配された冷媒５は水平
ダクト１の上・下巻線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下する。冷媒に
は、例えば、パーフルオロカーボンを用いる。また、水
平ダクトの間隙Ｈを一定とし、０．５≦Ｈ≦３ｍｍ と
なるように配置した０図中Ａは折流板、第２図にＨ＝
２ ｍｍとＨ＝ ５ ｒｒａの場合の各水平ダクト内の
離遠Ｕの分布を示した。Ｈ＝ ５ ｒｍ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、
Ｈ＝２ｎｎでは均一に流量を分配することができる。第
３図に巻線３と冷媒５の温度差である温度上昇の分布を
示した。Ｈ＝ ５ ｍｎでは、入口付近の温度上昇が大
きくなり、冷媒が発泡（絶縁破壊の原因）する恐れがあ
るが、Ｈ＝ ２ ＋ａｍでは、温度上昇を小さく均一に
することができる。第４図に垂直ダクト間隙Ｈと偏流率
Ｕ ｗａｘ ／ Ｕ ｍｅａｎの関係を示した。Ｈ〈２
ＩＩＩＩｌでは偏流率の変化は小さいが、Ｈ≧２１ｆｆ
ｌ＋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。The refrigerant 5 enters the vertical duct 2 from the upstream fold section and is distributed to the multilayer horizontal duct 1 . After cooling the upper and lower windings 3 of the horizontal duct 1, the distributed refrigerant 5 is collected into the vertical duct 2 on the exit side and flows down to the folded flow section on the downstream side. For example, perfluorocarbon is used as the refrigerant. In addition, the gap H of the horizontal duct is kept constant, and A in Figure 0 is a folding plate, and H=
The distribution of distance U in each horizontal duct in the case of 2 mm and H = 5 rra is shown. At H = 5 rm, the flow is biased near the outlet and the flow velocity near the inlet is small, whereas
When H=2nn, the flow rate can be uniformly distributed. FIG. 3 shows the distribution of temperature rise, which is the temperature difference between the winding 3 and the refrigerant 5. At H=5 mn, the temperature rise near the inlet becomes large and there is a risk that the refrigerant may foam (causing dielectric breakdown), but at H=2 + am, the temperature rise can be small and uniform. FIG. 4 shows the relationship between the vertical duct gap H and the drift rate U wax / U mean. H〈2
In IIIl, the change in drift rate is small, but H≧21ff
At l+, the drift rate increases slowly as H increases, indicating that the flow is no longer uniformly distributed.
第５図に水平ダクト間隙Ｈと折流区あたりの圧力損失（
ｗ＋液柱）との関係を示した。圧力損失はＨ≧２ｍでは
ほぼ一定であるが、Ｈ≦１ｍになると急増する。Figure 5 shows the horizontal duct gap H and the pressure loss per fold section (
w+liquid column). The pressure loss is almost constant when H≧2m, but increases rapidly when H≦1m.
冷媒としてパーフルオロカーボン液を用いた場合、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。When a perfluorocarbon liquid is used as a refrigerant, the flow rate is uniformly distributed to a multilayer horizontal duct, which has the effect of reducing pressure loss.
本発明の他の実施例を第６図ないし第８図に示した。水
平ダクトの間隙を入口からＨとＨｌ （Ｈ＞Ｈｌ）とに
交互に配置し、出口をＨｔ とした実施例である。Other embodiments of the invention are shown in FIGS. 6-8. This is an embodiment in which the horizontal duct gaps are alternately arranged at H and Hl (H>Hl) from the inlet, and the outlet is Ht.
第６図にＨ＝ ３ｍｍ、 Ｈｚ ／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なるにつれ、Ｕがほぼ直線的に増
加しているのに対し、Ｈｘ ／ 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Ｈｌ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Ｈｔ／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
１巻線の温度が平均化されるためである。In Figure 6, H = 3 mm, Hz /H = 1, 2/
It showed a flow velocity distribution of 3.1/3. In H1/H: 1, U increases almost linearly from the inlet to the outlet, whereas Hx/H=2/3,
At 1/3, U is large when H has a large gap, and U is small when Hl has a small gap. However, as shown in Figure 7, the temperature rise is Ht/H=2/H compared to H1/H=1.
3.1/3 is small and averaged. This is winding 3
This is because the winding is cooled by the upper horizontal duct and the lower horizontal duct, and the temperature of one winding is averaged.
第８図にＨ１／Ｈと圧力損失の関係を示した。FIG. 8 shows the relationship between H1/H and pressure loss.
圧力損失はＨ１／Ｈｚ１．５で最小になり、第５図に比
べ全体的に小さい。The pressure loss becomes minimum at H1/Hz1.5, and is smaller overall 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 this embodiment, the temperature rise of the winding can be further made uniform and
and can be decreased. It also has the effect of reducing pressure loss.
第９図ないて第１１図は他の実施例である。流れを均一
化するため、水平ダクト１の内に流動抵抗となる凸部６
を設置した。また、絶縁抵抗の増大のため、水平ダクト
１を絶９［７で仕切った。FIGS. 9 to 11 show other embodiments. In order to equalize the flow, there is a convex part 6 inside the horizontal duct 1 that acts as a flow resistance.
was installed. Further, in order to increase the insulation resistance, the horizontal duct 1 was partitioned off with 9 [7].
なぜなら、冷媒中に浮遊物（ごみ）９があると。This is because there are floating objects (dust) 9 in the refrigerant.
水平ダクトの間隙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、巻線間を浮遊物９の橋がで
きて絶縁破壊の原因となるからである。This is because if the gap H between the horizontal ducts is made small, floating objects 9 will be collected in areas where the winding electric field is strong, and a bridge of floating objects 9 will form between the windings, causing dielectric breakdown.
本実施例によれば、冷媒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, the flow of the refrigerant is uniformly distributed and the dielectric strength of the windings is improved.
第１２図では、水平ダクトの出口にスリットを設け、水
平ダクトの流動抵抗を増加させ、流量分配を均一化させ
た。In FIG. 12, a slit is provided at the outlet of the horizontal duct to increase the flow resistance of the horizontal duct and to equalize the flow distribution.
本発明によれば、流路の圧力損失を増大させることなく
、水平流路の流れを均一化することができる。According to the present invention, the flow in the horizontal channel can be made uniform without increasing the pressure loss in the channel.
第１図は本発明の一実施例の流路断面図、第２図ないし
第５図は第１図の説明図、第６図ないし第８図は他の実
施例、及びその説明図、第９図ないし第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・・・冷媒、６・・・凸部、７・
・・絶縁膜、８・・・スリット、９・・・浮遊物。FIG. 1 is a cross-sectional view of the flow path of one embodiment of the present invention, FIGS. 2 to 5 are explanatory diagrams of FIG. 1, and FIGS. 6 to 8 are other embodiments and their explanatory diagrams. 9 to 12 are explanatory diagrams of still other embodiments. DESCRIPTION OF SYMBOLS 1... Horizontal duct, 2... Vertical duct, 3... Winding wire, 4... Folding plate, 5... Refrigerant, 6... Convex part, 7...
...Insulating film, 8...Slit, 9...Floating object.
Claims (6)
直ダクトより成る不燃変圧器において、前記水平ダクト
の相互の間隙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構造
。1. In a non-flammable transformer that is cooled using a non-flammable refrigerant and consists of windings, horizontal ducts, and vertical ducts, the windings are arranged so that the mutual gap H between the horizontal ducts is 1 mm≦H≦3 mm. Features a non-flammable transformer winding structure.
１）とし、ＨとＨ＿１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不燃変圧器巻線構造。2. The gap between the horizontal ducts is H and H_1 (H>H_
1) A non-flammable transformer winding structure characterized in that the windings are arranged so that H and H_1 alternate.
、前記不燃性冷媒の出口部をＨ＿１としたことを特徴と
する不燃変圧器巻線構造。3. The non-flammable transformer winding structure according to claim 2, characterized in that H and H_1 are sequentially alternated from the in-flow part of the non-flammable refrigerant, and H_1 is the outlet part of the non-flammable refrigerant.
る不燃変圧器巻線構造。4. The non-flammable transformer winding structure according to claim 1, characterized in that a flow resistor is provided within the horizontal duct.
を分離したことを特徴とする不燃変圧器巻線構造。5. The non-flammable transformer winding structure according to claim 1, wherein an insulating film is sandwiched between the horizontal duct to separate the upper and lower windings.
とする不燃変圧器巻線構造。6. The non-flammable transformer winding structure according to claim 1, characterized in that a constriction part is provided at an entrance/exit part of the 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 true JPH02105506A (en) | 1990-04-18 |
| JP2741876B2 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) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04168707A (en) * | 1990-11-01 | 1992-06-16 | Toshiba Corp | Disk winding of induction apparatus |
| JP2010087247A (en) * | 2008-09-30 | 2010-04-15 | Mitsubishi Electric Corp | Air-core reactor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57147213A (en) * | 1981-03-09 | 1982-09-11 | Toshiba Corp | Winding for transformer |
| JPS6316414U (en) * | 1986-07-18 | 1988-02-03 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8428401D0 (en) * | 1984-11-09 | 1984-12-19 | Dow Corning Ltd | Organosiloxane-oxy-alkylene copolymers |
-
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 |
| JPS6316414U (en) * | 1986-07-18 | 1988-02-03 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04168707A (en) * | 1990-11-01 | 1992-06-16 | Toshiba Corp | Disk winding of induction apparatus |
| JP2010087247A (en) * | 2008-09-30 | 2010-04-15 | Mitsubishi Electric Corp | Air-core reactor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2741876B2 (en) | 1998-04-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0572510B1 (en) | Optimized offset strip fin for use in compact heat exchangers | |
| US4207550A (en) | Winding structure of electric devices | |
| JPH02105506A (en) | Incombustible transformer winding structure | |
| JPH09199345A (en) | Winding of transformer | |
| US3147711A (en) | Laminations and laminated structures suitable for use in electrical apparatus | |
| US2811923A (en) | Direct current electromagnetic pump | |
| US3032728A (en) | Insulating and cooling arrangement for electrical apparatus | |
| JPH06119827A (en) | Litz wire | |
| JPH09162040A (en) | Winding of transformer | |
| JPH0822918A (en) | Transformer winding | |
| JP3535562B2 (en) | Gas-cooled power equipment | |
| JPS5875816A (en) | Leaf winding transformer | |
| JPS5875818A (en) | Foil winding | |
| JPS58151009A (en) | Winding of stationary induction electric apparatus | |
| JP2002015923A (en) | Static induction apparatus | |
| JP2000077236A (en) | Stationary induction device | |
| JP2697600B2 (en) | Winding structure for induction magnet | |
| JPS58119616A (en) | Foil winding transformer | |
| JPH0433305A (en) | Transformer | |
| JPH05326293A (en) | Gas insulated transformer | |
| JPH05315149A (en) | Self-cooled transformer | |
| JPS63117411A (en) | Cooling panel for foil winding transformer | |
| JP3465373B2 (en) | Winding cooling structure of gas insulation equipment | |
| JP2667048B2 (en) | Electrical insulation tube | |
| JPS5877210A (en) | Transformer |