JPS6314425Y2 - - Google Patents
Info
- Publication number
- JPS6314425Y2 JPS6314425Y2 JP1981184533U JP18453381U JPS6314425Y2 JP S6314425 Y2 JPS6314425 Y2 JP S6314425Y2 JP 1981184533 U JP1981184533 U JP 1981184533U JP 18453381 U JP18453381 U JP 18453381U JP S6314425 Y2 JPS6314425 Y2 JP S6314425Y2
- Authority
- JP
- Japan
- Prior art keywords
- coil
- insulating tube
- base material
- cooling duct
- inner layer
- 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
Links
- 238000001816 cooling Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 8
- 125000006850 spacer group Chemical group 0.000 claims description 6
- 239000004952 Polyamide Substances 0.000 claims description 3
- 229920002647 polyamide Polymers 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 2
- 239000011347 resin Substances 0.000 claims description 2
- 239000011521 glass Substances 0.000 claims 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000003822 epoxy resin Substances 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 239000003779 heat-resistant material Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Insulating Of Coils (AREA)
- Insulating Bodies (AREA)
Description
【考案の詳細な説明】
本考案は乾式変圧器類に使用されるコイル芯型
絶縁管の改良に関する。[Detailed Description of the Invention] The present invention relates to improvements in coil core type insulating tubes used in dry type transformers.
変圧器、リアクトル等のコイル芯型絶縁管は、
電気絶縁耐力はもちろん、短絡時等に働く機械力
に耐え、芯型としてコイル組立時の取扱い作業中
破損しない強度を有することが必要である。 Coil core type insulation tubes for transformers, reactors, etc.
It is necessary to have not only electrical dielectric strength but also the strength to withstand mechanical forces that occur during short circuits, and to prevent breakage during handling during coil assembly as a core type.
従来の芯型絶縁管は、ガラス繊維等を基材と
し、エポキシ樹脂等で固めた耐熱性、機械的強度
に優れたものとして使用されていた。この絶縁管
は、一般に空隙率が高く、貫層耐圧を得ることが
困難であることから、第1図に示すように鉄心1
に外嵌される絶縁管2の外周にコイル4を巻装す
る時点で電気絶縁耐力に優れた絶縁シート3を必
要回数巻付けたのち、冷却ダクト6を形成するた
めの冷却ダクト用スペーサ7を介在するようにし
てコイル4を巻装していた。図中5は鉄心1と絶
縁管2との間に介在する固定用スペーサである。 Conventional core-type insulating tubes are made of glass fiber or the like as a base material and are hardened with epoxy resin or the like to have excellent heat resistance and mechanical strength. This insulating tube generally has a high porosity and it is difficult to obtain through-layer pressure resistance, so as shown in Figure 1, the iron core
When winding the coil 4 around the outer periphery of the insulating tube 2 to be fitted onto the outside, the insulating sheet 3 having excellent electrical dielectric strength is wound a necessary number of times, and then the cooling duct spacer 7 for forming the cooling duct 6 is wrapped around the coil 4. The coil 4 was wound so as to be interposed therebetween. In the figure, 5 is a fixing spacer interposed between the iron core 1 and the insulating tube 2.
しかるに上記従来の構成では、絶縁管2の外周
に絶縁シート3を巻付ける際に絶縁シート3が波
を打つたり、重ね部分のふくれが生じやすく、ま
た絶縁シート3を固定するためにテープ類を使用
しているため、絶縁に必要な厚みに対し寸法が大
きくなり、精度のよい外径寸法を得難いという欠
点があつた。さらに前記絶縁シート3の波打ちが
冷却ダクト6を潰し、冷却作用を阻害する要因と
もなつていた。 However, in the conventional configuration described above, when wrapping the insulating sheet 3 around the outer periphery of the insulating tube 2, the insulating sheet 3 tends to wave or bulge at the overlapped portion, and tape or the like is not required to secure the insulating sheet 3. Because of this, the dimensions are large compared to the thickness required for insulation, and the drawback is that it is difficult to obtain accurate outer diameter dimensions. Furthermore, the waving of the insulating sheet 3 crushed the cooling duct 6 and became a factor that inhibited the cooling effect.
本考案は上記従来の欠点に着目し、これを改善
することを目的としてなされたもので、乾式変圧
器類に使用するコイル芯型絶縁管を内外2層で構
成し、その内側層を耐熱性および機械的強度に優
れたガラス基材で形成し、外側層を電気絶縁耐力
に優れたポリアミド紙等の基材で形成し、これら
内外側層を樹脂で一体化して機械的強度と電気的
強度とを同時に満足し得るコイル絶縁管を提供す
るにある。 This invention focused on the above-mentioned conventional drawbacks and was developed with the aim of improving them.The coil core type insulating tube used in dry type transformers is composed of two layers, an inner layer and an outer layer, and the inner layer is made of heat-resistant material. The outer layer is made of a base material such as polyamide paper with excellent electrical dielectric strength, and these inner and outer layers are integrated with resin to provide mechanical strength and electrical strength. The purpose is to provide a coil insulating tube that satisfies the above requirements at the same time.
以下本考案の実施例を第2図により前記第1図
と同一部材には同じ符号を用いて説明する。 An embodiment of the present invention will be described below with reference to FIG. 2, using the same reference numerals for the same members as in FIG.
本考案による絶縁管2は、内側層2aと外側層
2bとの2層構造とされている。 The insulating tube 2 according to the present invention has a two-layer structure including an inner layer 2a and an outer layer 2b.
上記内側層2aは、耐熱性、機械的強度に優れ
たガラス繊維等の材料により形成され、外側層2
bは電気的絶縁耐力に優れた耐熱ポリアミド紙等
の材料を内側層2aの外面に巻き上げて構成し、
エポキシ樹脂等により固めて一体化されている。 The inner layer 2a is made of a material such as glass fiber that has excellent heat resistance and mechanical strength.
b is composed of a material such as heat-resistant polyamide paper with excellent electrical dielectric strength rolled up on the outer surface of the inner layer 2a,
It is solidified and integrated with epoxy resin.
他の構成は第1図と同様であるから、対応する
符号を付して説明を省略する。 Since the other configurations are the same as those in FIG. 1, corresponding symbols are attached and explanations are omitted.
本考案は上記の構成としたことにより、絶縁管
2の外周に波打ちや凹凸が形成されることがな
く、厚さも小さくでき、精度のよい芯型絶縁管を
得ることができ、コイル全体の寸法も安定し、か
つ冷却用ダクト6も確保され、冷却作用を阻害す
ることが防止される。 By having the above-mentioned structure of the present invention, undulations and unevenness are not formed on the outer periphery of the insulating tube 2, the thickness can be reduced, a core-shaped insulating tube with good precision can be obtained, and the overall coil size can be reduced. is also stabilized, and the cooling duct 6 is also secured, preventing the cooling effect from being inhibited.
特に外側層2bは、鉄心1からの直接熱的影響
を受けることがなく、また内側層2aには耐熱性
に優れた材料を用いているため、耐熱クラスの低
い乾式変圧器類に使用する場合であつても、鉄心
1と芯型絶縁管2との間に形成するダクトを許容
される限り縮少することが可能となり、全体の外
径寸法を大巾に縮減することができ、変圧器類を
経済的に製作することができるなどの種々の効果
がある。 In particular, the outer layer 2b is not directly affected by the heat from the iron core 1, and the inner layer 2a is made of a material with excellent heat resistance, so when used in dry type transformers with a low heat resistance class. Even if the transformer is There are various effects such as being able to economically produce similar products.
第1図は従来のコイルの横断面図、第2図は本
考案によるコイルの横断面図である。
1……鉄心、2……絶縁管、2a……内側層、
2b……外側層、3……絶縁シート、4……コイ
ル、5……固定用スペーサ、6……冷却用ダク
ト、7……冷却ダクト用スペーサ。なお、図中同
一符号は同一又は相当部分を示す。
FIG. 1 is a cross-sectional view of a conventional coil, and FIG. 2 is a cross-sectional view of a coil according to the present invention. 1... Iron core, 2... Insulating tube, 2a... Inner layer,
2b... Outer layer, 3... Insulating sheet, 4... Coil, 5... Fixing spacer, 6... Cooling duct, 7... Spacer for cooling duct. Note that the same reference numerals in the figures indicate the same or corresponding parts.
Claims (1)
を配設し、この絶縁管の外周に冷却ダクト用スペ
ーサを介してコイルを巻装することにより上記絶
縁管とコイルとの間に冷却ダクトを形成するよう
にした乾式変圧器のコイル芯型構造において、上
記絶縁管を内外2層で構成し、その内側層を耐熱
性および機械的強度に優れたガラス基材で形成
し、外側層を電気絶縁耐力に優れたポリアミド紙
等の基材で形成し、これら内外層を樹脂で一体化
したことを特徴とする乾式変圧器のコイル芯型構
造。 An insulating tube is placed around the outer periphery of the core leg via a fixing spacer, and a coil is wound around the outer periphery of the insulating tube via a cooling duct spacer, thereby creating a cooling duct between the insulating tube and the coil. In the coil core type structure of the dry type transformer, the insulating tube is composed of two layers, an inner layer and an outer layer, the inner layer is made of a glass base material with excellent heat resistance and mechanical strength, and the outer layer is made of a glass base material with excellent heat resistance and mechanical strength. A coil core type structure of a dry transformer characterized by being made of a base material such as polyamide paper with excellent dielectric strength, and having these inner and outer layers integrated with resin.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18453381U JPS5887316U (en) | 1981-12-09 | 1981-12-09 | Coil core structure of dry type transformer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18453381U JPS5887316U (en) | 1981-12-09 | 1981-12-09 | Coil core structure of dry type transformer |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5887316U JPS5887316U (en) | 1983-06-14 |
JPS6314425Y2 true JPS6314425Y2 (en) | 1988-04-22 |
Family
ID=29984771
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18453381U Granted JPS5887316U (en) | 1981-12-09 | 1981-12-09 | Coil core structure of dry type transformer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5887316U (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4078929B2 (en) * | 2002-09-19 | 2008-04-23 | 株式会社デンソー | Ignition coil |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5473269A (en) * | 1977-11-25 | 1979-06-12 | Tokyo Shibaura Electric Co | Multiplex winding coil |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5041118Y2 (en) * | 1971-02-23 | 1975-11-22 |
-
1981
- 1981-12-09 JP JP18453381U patent/JPS5887316U/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5473269A (en) * | 1977-11-25 | 1979-06-12 | Tokyo Shibaura Electric Co | Multiplex winding coil |
Also Published As
Publication number | Publication date |
---|---|
JPS5887316U (en) | 1983-06-14 |
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