JPS5875816A - Leaf winding transformer - Google Patents
Leaf winding transformerInfo
- Publication number
- JPS5875816A JPS5875816A JP17300081A JP17300081A JPS5875816A JP S5875816 A JPS5875816 A JP S5875816A JP 17300081 A JP17300081 A JP 17300081A JP 17300081 A JP17300081 A JP 17300081A JP S5875816 A JPS5875816 A JP S5875816A
- Authority
- JP
- Japan
- Prior art keywords
- refrigerant
- coolant
- coolant passages
- cooling duct
- adjacent
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Coils Of Transformers For General Uses (AREA)
- Transformer Cooling (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は金属シートと絶縁シートを重ねた箔状の巻線内
に冷却ダクトを内蔵させ、その中に冷媒を流すことによ
って巻体を冷却させる箔巻変圧器に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a foil-wound transformer in which a cooling duct is built into a foil-like winding formed by overlapping a metal sheet and an insulating sheet, and the winding is cooled by flowing a refrigerant therein.
従来、箔巻変圧器は、巻体内に冷却ダクトを内蔵させこ
の中に絶縁特性の秀れた冷媒を送夛込み。Traditionally, foil-wound transformers have a cooling duct built into the coil, into which a refrigerant with excellent insulation properties is pumped.
巻層を冷却するよう構成されているOその一仇を第1図
によって説明する0
鉄心1の外側に箔状の導体2と絶縁シートjを重ね巻き
して低圧巻体4と高圧巻体5を構成し、それらの巻体内
には環状の冷却ダクト6が内蔵されている◎この冷却ダ
クト内に導液パイプ7、絶縁パイプ8を通してフロン−
几114 +FC75トいった冷媒9をポンプ10によ
って送9込み1巻層から発生する熱を奪う。冷媒は冷却
ダクトから外部冷却器11に流れここで放熱した後再び
ポンプlOで巻体内の冷却ダクトに送られる。導液パイ
プ7はステンレスなどの金属で作られるが、これと冷却
ダクト6を接続するためには絶縁パイプ8が用いられ冷
却ダクトはタンクセなどのアース電位と絶縁されてiる
0巻体タンクとの絶縁はタンク内に封入された絶縁油あ
るいは8F、ガスといった絶縁媒体13で絶縁されてい
る。The structure of the winding layer, which is configured to cool the winding layers, will be explained with reference to FIG. A ring-shaped cooling duct 6 is built into the coiled body of the fluorocarbons.
The refrigerant 9 that has been heated to 114 + FC75 is fed by the pump 10 to remove the heat generated from the first layer. The refrigerant flows from the cooling duct to the external cooler 11, where it radiates heat, and then is sent again to the cooling duct inside the roll by the pump lO. The liquid guide pipe 7 is made of metal such as stainless steel, but an insulated pipe 8 is used to connect it to the cooling duct 6, and the cooling duct is insulated from the ground potential such as a tank tank and a zero-roll tank. is insulated by an insulating medium 13 such as insulating oil, 8F, or gas sealed in the tank.
なお第1図において本発明と直接関係のない巻線のり一
ド線やそれをタンクの外11に引角出すブッシングなど
は省略しである。Note that in FIG. 1, the winding lead wire and the bushing for extending the wire to the outside of the tank 11, which are not directly related to the present invention, are omitted.
このような箔巻変圧器は冷却のためめ冷媒が絶縁のため
の絶縁媒体と完全に分譲されていることから、特にこζ
ではセパレート式箔巻変圧器と呼ぶことにする。This type of foil-wound transformer is particularly useful since the refrigerant for cooling is completely separated from the insulating medium for insulation.
Here, we will call it a separate foil-wound transformer.
従来、このようなセパレート式消巻変圧器の冷却ダクト
内を流れる冷媒の流れ方向は、第2図(14に示すよう
な軸方向あるいは第2図(b) K示すような円周方向
に全面的に一定方向より流れている0第2図(→のよう
に軸方向(下方から上方)に冷媒を流し九場合の冷媒及
び巻体内の軸方向温度分布の概略を#Ij図(→、(#
に示した0特に箔巻変圧器が大容量になると巻層からの
発熱量が大きいので冷却ダクト6内の冷媒9の温度上昇
が大きくなる。そのため巻体内に大角な温度分布が生じ
特に冷媒出口近くでは局所的に1すなわち巻体の上方で
は温度が高くなる。これは絶縁シートの絶縁性能を低下
させさらに変圧器のオーバーヒートを引き起こすので必
然的に冷媒流量が増大し、しいては冷媒圧送ポンプの動
力を増大させなければならない0
第2図(b)のように円周方向に冷媒を流した場合にも
同様のことがい見る0
本発明の目的は上記欠点を考慮し、セノくレート式の箔
巻変圧器において巻体内の温度差を緩和させ局所的な温
度上昇の少ない箔巻変圧器を提供するととKある。Conventionally, the flow direction of the refrigerant in the cooling duct of such a separate winding transformer has been either axially as shown in Figure 2 (14) or circumferentially as shown in Figure 2(b). Figure #Ij (→, ( #
In particular, when a foil-wound transformer has a large capacity, the amount of heat generated from the winding layer is large, so the temperature rise of the refrigerant 9 in the cooling duct 6 becomes large. As a result, a large-angle temperature distribution occurs within the coil, and the temperature locally becomes high particularly near the refrigerant outlet, that is, above the coil. This reduces the insulation performance of the insulation sheet and causes the transformer to overheat, which inevitably increases the refrigerant flow rate, which in turn requires an increase in the power of the refrigerant pump (as shown in Figure 2 (b)). A similar situation can be seen when the refrigerant is flowed in the circumferential direction.The purpose of the present invention is to take the above-mentioned drawbacks into account, and to alleviate the temperature difference within the coil in a senko rate type foil-wound transformer. It is said to provide a foil-wound transformer with less temperature rise.
すなわち、本発明はセパレート式の箔巻変圧器にお−て
冷却ダクト内を複数本の冷媒流路に細分化し、特に相隣
接する冷媒tIt路内における冷媒の流れ方向を異なら
せることによって冷却ダクト内の冷媒の温度分布を均一
化し1.箔壱巻体内の温度上昇を抑えることので睡るも
のである。That is, the present invention subdivides the inside of the cooling duct into a plurality of refrigerant flow paths in a separate foil-wound transformer, and in particular, by making the flow directions of the refrigerant different in adjacent refrigerant paths, the cooling duct 1. Uniform the temperature distribution of the refrigerant inside. It sleeps because it suppresses the temperature rise inside the foil roll.
以下、本発明の一実施例を第4図乃至第7図を用いて詳
細に説明する。Hereinafter, one embodiment of the present invention will be described in detail using FIGS. 4 to 7.
本発明の箔巻変圧器は、冷却ダクト以外の構成について
第1図に示した構成と同様の構成で良いのでその詳細を
省略する。The foil-wound transformer of the present invention may have the same structure as shown in FIG. 1 except for the cooling duct, so the details thereof will be omitted.
第4図に示した実施例は、環状の冷却ダクト6内を多数
の軸方向冷媒流路14に細分化し、隣接する冷媒流路に
は互いに逆方向に冷媒を流したものである。矢印は冷媒
の流れ方向を示す。すなわち冷媒の流路の出口と入口で
大きな温度差が生ずるので、このような構造にすると巻
体の両端近くにおいて、隣接する冷媒流路内の冷媒どう
しが大きな1度差を持ち1巻体内に第5図に示すような
周方向温度分布が生ずる。これは、巻体内に周方向熱伝
導を−発し局所的な温度上昇を防止することができる。In the embodiment shown in FIG. 4, the inside of the annular cooling duct 6 is subdivided into a large number of axial refrigerant passages 14, and the refrigerant is flowed in mutually opposite directions into adjacent refrigerant passages. Arrows indicate the direction of refrigerant flow. In other words, there is a large temperature difference between the outlet and inlet of the refrigerant flow path, so if this structure is used, the refrigerants in adjacent refrigerant flow paths will have a large 1 degree difference near both ends of the roll, and the refrigerants within one roll will have a large temperature difference between them. A circumferential temperature distribution as shown in FIG. 5 occurs. This can generate circumferential heat conduction within the roll and prevent local temperature increases.
以上説明したように本発明による箔巻変圧器を用いれば
巻線内の温度差が緩和され局所的な温度上昇を防ぐこと
ができる0このため、絶縁シートの絶縁性能の低下や変
圧器のオーバーヒートを防止することができ、しいては
冷媒流量やポンプ動力を減少させることが可能となる。As explained above, if the foil-wound transformer according to the present invention is used, the temperature difference within the windings can be alleviated and local temperature increases can be prevented.As a result, the insulation performance of the insulating sheet decreases and the transformer overheats. This makes it possible to reduce the refrigerant flow rate and pump power.
なお、本発明の箔巻変圧器はその冷却ダクトに設けた隣
接する冷媒流路内の冷媒が局所的にできるだけ大きな温
度差を持つように冷却ダクト内を細分化し冷媒の流れ方
向を変化させれば良く、第6図に示すように、冷却ダク
ト6内の軸方向流路14を一端で反転させて構成したり
、第7図に示すように冷却ダクト6内を軸方向及び周方
向流路14に細分化して構成しても良い。矢印は冷媒の
流れ方向を示す。In addition, in the foil-wound transformer of the present invention, the inside of the cooling duct is subdivided and the flow direction of the refrigerant is changed so that the refrigerant in adjacent refrigerant flow paths provided in the cooling duct has as large a local temperature difference as possible. As shown in FIG. 6, the axial passage 14 in the cooling duct 6 may be reversed at one end, or as shown in FIG. It may be configured by subdividing into 14 parts. Arrows indicate the direction of refrigerant flow.
第1図は従来の箔巻変圧器の一例を示す概略図。
第2図(4(呻は従来の冷却ダクト内での冷媒の流れを
示す図、第3図は従来の冷媒及び巻体内の軸方向温度分
布を示す概略図、第4図は本発明の一実施例の要部を示
す図、第5図は第4図に示す本発明の実施例における巻
体内の周方向温度分布を示す概略図、第6図および第7
図は本発明の他の実施例の要部を示す図である0
2・・・巻層、 3・・・絶縁シート、 6・・・
冷却ダクト。
9・・・冷媒、 14・・・冷媒流路。
第1図
7ブ
(lλ=2 、ム2
第3図
(皮)(b)
N鍼 毛体1屓。
第4図
第5TjIA
局方伺
第6図
第7図FIG. 1 is a schematic diagram showing an example of a conventional foil-wound transformer. Figure 2 (4) is a diagram showing the flow of refrigerant in a conventional cooling duct, Figure 3 is a schematic diagram showing the axial temperature distribution in the conventional refrigerant and the coil, and Figure 4 is a diagram showing the flow of refrigerant in a conventional cooling duct. 5 is a schematic diagram showing the circumferential temperature distribution inside the roll in the embodiment of the present invention shown in FIG. 4, and FIGS.
The figure shows main parts of another embodiment of the present invention. 0 2... Wound layer, 3... Insulating sheet, 6...
cooling duct. 9... Refrigerant, 14... Refrigerant channel. Fig. 1 7b (lλ=2, m2
Figure 3 (skin) (b) N acupuncture 1 level of the hair body. Figure 4 Figure 5 TjIA Pharmacopoeia Figure 6 Figure 7
Claims (2)
とする箔巻変圧器。(1) A foil-wound transformer is characterized by an inner roll made of overlapping metal sheets and insulating sheets.
を異ならしたことを特徴とする特許請求の範囲第1項記
載の箔巻変圧器。(2) The foil-wound transformer according to claim 1, wherein the refrigerant flow paths are arranged adjacent to each other in different directions of flow of refrigerant.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17300081A JPS5875816A (en) | 1981-10-30 | 1981-10-30 | Leaf winding transformer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17300081A JPS5875816A (en) | 1981-10-30 | 1981-10-30 | Leaf winding transformer |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5875816A true JPS5875816A (en) | 1983-05-07 |
Family
ID=15952321
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17300081A Pending JPS5875816A (en) | 1981-10-30 | 1981-10-30 | Leaf winding transformer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5875816A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63117411A (en) * | 1986-11-06 | 1988-05-21 | Toshiba Corp | Cooling panel for foil winding transformer |
JP2014504806A (en) * | 2011-02-02 | 2014-02-24 | シーメンス リミタダ | Dry distribution transformer |
-
1981
- 1981-10-30 JP JP17300081A patent/JPS5875816A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63117411A (en) * | 1986-11-06 | 1988-05-21 | Toshiba Corp | Cooling panel for foil winding transformer |
JP2014504806A (en) * | 2011-02-02 | 2014-02-24 | シーメンス リミタダ | Dry distribution transformer |
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