JPH0737724A - Stationary induction equipment winding and its manufacture - Google Patents
Stationary induction equipment winding and its manufactureInfo
- Publication number
- JPH0737724A JPH0737724A JP5182287A JP18228793A JPH0737724A JP H0737724 A JPH0737724 A JP H0737724A JP 5182287 A JP5182287 A JP 5182287A JP 18228793 A JP18228793 A JP 18228793A JP H0737724 A JPH0737724 A JP H0737724A
- Authority
- JP
- Japan
- Prior art keywords
- coil
- cooling
- cooling tube
- tube
- insulating
- 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
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/327—Encapsulating or impregnating
- H01F2027/328—Dry-type transformer with encapsulated foil winding, e.g. windings coaxially arranged on core legs with spacers for cooling and with three phases
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、コイルを覆う絶縁層を
備えた静止誘導機器巻線およびその製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a static induction device winding having an insulating layer covering a coil and a method for manufacturing the same.
【０００２】[0002]
【従来の技術】近年、都市部への電力需要の増大に対応
して、都市部に電力機器を設置することが多くなってき
た。この種電力機器のうち、ビルや地下街に設置される
機器、とりわけ大形機器たる変圧器には難燃性が要求さ
れている。このような背景のもと、変圧器に使用する絶
縁媒体としても、可燃性の鉱物油から難燃性であるエポ
キシ樹脂等に置換されつつあり、さらにはシリコーンゲ
ル等の固液中間性状を有するものの適用も研究されてい
る。2. Description of the Related Art In recent years, in response to an increase in the demand for electric power in urban areas, electric power equipment is often installed in urban areas. Among these types of power equipment, equipment installed in buildings and underground malls, especially transformers that are large equipment, are required to have flame retardancy. Against this background, as an insulating medium used in transformers, flammable mineral oils are being replaced by flame-retardant epoxy resins and the like, and they have solid-liquid intermediate properties such as silicone gel. The application of things is also being studied.
【０００３】しかしながら、これらの絶縁媒体を採用し
たものは、油入変圧器のように絶縁兼冷却媒体が対流循
環して冷却するものに比べ、冷却性が劣るため、コイル
の電流密度を下げる等の温度上昇抑制対策が必要とな
り、その結果、変圧器が大形化，重量アップされる傾向
にあった。一方、都市部では地価が高く、搬入制限の厳
しい所に変圧器を設置する都合上、変圧器の小形化およ
び軽量化が最優先課題であり、とりわけコイルの冷却性
改善が強く望まれている。However, the one using these insulating media is inferior in cooling property to the one in which the insulating and cooling medium is convectively circulated and cooled like an oil-filled transformer, so that the current density of the coil is lowered. It was necessary to take measures to control the temperature rise of the transformer, and as a result, transformers tended to be larger and heavier. On the other hand, in urban areas, downsizing and weight reduction of transformers are the top priorities for the reason that transformers are installed in places where land prices are high and import restrictions are severe, and improvement of coil cooling performance is strongly desired. .
【０００４】[0004]
【発明が解決しようとする課題】このような課題を解決
する構成として、ポンプおよび外部熱交換器に接続され
た冷却チューブをコイルの所定部分に密接させ、前記冷
却チューブ内に冷媒を流通させることにより、コイルの
冷却性を改善するものが考えられている。ここで、高電
圧コイルに上記構成を適用する場合は、冷媒はもとよ
り、冷却チューブにも絶縁性のものを適用し、ポンプや
外部熱交換器とコイルとの絶縁を図る必要がある。As a constitution for solving such a problem, a cooling tube connected to a pump and an external heat exchanger is brought into close contact with a predetermined portion of a coil, and a refrigerant is circulated in the cooling tube. Therefore, it is considered that the cooling property of the coil is improved. Here, when the above-mentioned configuration is applied to the high-voltage coil, it is necessary to apply not only the refrigerant but also the cooling tube having an insulating property to insulate the coil from the pump or the external heat exchanger.
【０００５】ところで、前記絶縁性の冷却チューブに
は、冷媒漏出防止のための気密性，ポンプの吐出圧や外
力に耐える強度，コイルの被覆等の微小な凹凸に追従す
るための柔軟性等が必要であるが、一般的に、セラミッ
クを除いた樹脂等からなる絶縁性の冷却チューブは、金
属の冷却チューブに比べて強度や気密性の点で劣る。こ
のため、前記絶縁性の冷却チューブとして、肉厚が比較
的厚い（０．５ｍｍ厚程度）テフロン製のチューブを用
い、強度や気密性の低さをカバーすることが考えられ
る。しかしながら、この種チューブを適用した場合、下
記（ａ），（ｂ）等の不具合が想定される。By the way, the insulating cooling tube has airtightness for preventing refrigerant leakage, strength to withstand the discharge pressure and external force of the pump, flexibility to follow minute irregularities such as coil coating, etc. Although necessary, an insulating cooling tube made of resin or the like excluding ceramic is generally inferior in strength and airtightness to a metal cooling tube. Therefore, it is conceivable to use a Teflon tube having a relatively large wall thickness (about 0.5 mm thickness) as the insulating cooling tube to cover low strength and airtightness. However, when this type of tube is applied, the following problems (a) and (b) are expected.
【０００６】（ａ）熱伝導率が小さいため、肉厚が厚い
と、たとえ０．５ｍｍ厚程度でも大きな熱抵抗となり、
肉厚方向に熱伝導による温度降下を生じる。その結果、
コイルの冷却性が損われる。 （ｂ）比較的柔軟性は有るが、肉厚が厚いと、たとえ
０．５ｍｍ厚程度でもコイルの被覆等の微小な凹凸に追
従できない。このため、接触熱抵抗による温度降下を生
じ、結果としてコイルの冷却性が損われる。(A) Since the thermal conductivity is small, if the wall thickness is large, the thermal resistance becomes large even if the thickness is about 0.5 mm.
A temperature drop occurs due to heat conduction in the thickness direction. as a result,
The cooling performance of the coil is impaired. (B) It is relatively flexible, but if the wall thickness is large, it is not possible to follow minute irregularities such as the coil coating even if it is about 0.5 mm thick. Therefore, a temperature drop occurs due to the contact thermal resistance, and as a result, the cooling property of the coil is impaired.
【０００７】従って、テフロン製チューブの薄肉化を図
れば（ａ）および（ｂ）の問題は解決される方向に向か
うが、すると、長期使用による疲労等が生じ、気密性の
点で要求性能を満たすことが困難になる。また、０．５
ｍｍ厚以下のテフロン製チューブは汎用性がなく、市場
性の点からコストに見合った供給が困難である。Therefore, if the wall thickness of the Teflon tube is reduced, the problems (a) and (b) will be solved, but then fatigue and the like will occur due to long-term use, and the required performance in terms of airtightness will be obtained. Difficult to meet. Also, 0.5
Tubes made of Teflon having a thickness of less than mm are not versatile, and it is difficult to supply them at a cost in view of their marketability.
【０００８】本発明は上記事情に鑑みてなされたもので
あり、その目的は、強度面での不安を解消し、高気密性
で肉厚が薄い絶縁性の冷却チューブを適用することが可
能な静止誘導機器巻線およびその製造方法を提供するこ
とである。The present invention has been made in view of the above circumstances, and an object thereof is to eliminate anxiety in terms of strength and to apply an insulating cooling tube having high airtightness and thin wall thickness. A static induction device winding and a method for manufacturing the same.
【０００９】[0009]
【課題を解決するための手段】上記の目的を達成するた
め、本発明の静止誘導機器巻線は、コイルと、このコイ
ルに接触状態で装着され該コイル冷却用の冷媒が流通す
る肉厚の薄い絶縁性の冷却チューブと、前記コイルおよ
び冷却チューブを覆う絶縁層とを備え、前記冷却チュー
ブとして、ポリ塩化ビニリデン製チューブまたはポリ塩
化ビニリデン製フィルムを基材とした多層フィルム製チ
ューブを用いたことを特徴とする（請求項１）。この場
合、絶縁材料として、シリコーンゲルまたはエポキシ樹
脂を用いることができる（請求項２）。In order to achieve the above object, the static induction device winding of the present invention has a coil and a wall thickness through which a coolant for cooling the coil is mounted in contact with the coil. A thin insulating cooling tube and an insulating layer that covers the coil and the cooling tube are provided, and as the cooling tube, a polyvinylidene chloride tube or a multilayer film tube using a polyvinylidene chloride film as a base material is used. (Claim 1). In this case, silicone gel or epoxy resin can be used as the insulating material (claim 2).
【００１０】また、本発明の静止誘導機器巻線の製造方
法は、コイルと、このコイルに接触状態で装着され該コ
イル冷却用の冷媒が流通する肉厚の薄い絶縁性の冷却チ
ューブと、前記コイルおよび冷却チューブを覆う絶縁層
とを備え、前記冷却チューブが装着されたコイルを型内
に収容し、この冷却チューブ内を加圧した状態で、前記
型内に絶縁材料を充填硬化することを特徴とする。この
場合、型を絶縁材製の容器から形成し、絶縁材料が硬化
した後に、該容器を絶縁層の外殻とすることができる
（請求項４）。The static induction device winding manufacturing method of the present invention includes a coil, a thin insulating cooling tube which is mounted in contact with the coil and through which a cooling medium for cooling the coil flows. An insulating layer covering the coil and the cooling tube, the coil having the cooling tube mounted therein is housed in a mold, and while the inside of the cooling tube is pressurized, an insulating material is filled and cured in the mold. Characterize. In this case, the mold can be formed from a container made of an insulating material, and after the insulating material is cured, the container can be used as the outer shell of the insulating layer (claim 4).
【００１１】[0011]
【作用】請求項１記載の手段によれば、冷却チューブと
して、特に気密性が高いポリ塩化ビニリデン製チューブ
またはポリ塩化ビニリデン製フィルムを基材とした多層
フィルム製チューブを用いるので、長期使用により冷却
チューブが疲労して冷媒が漏出することを確実に防止で
きる。しかも、冷却チューブは肉厚が薄く構成されてい
るので、冷却チューブの熱抵抗が小となるのは勿論のこ
と、冷却チューブがコイルの被覆等の微小な凹凸に追従
するので、コイルの冷却性が向上し、ひいては、コイル
の小形化および軽量化が可能となる。According to the means of claim 1, since the cooling tube is a tube made of polyvinylidene chloride having a particularly high airtightness or a tube made of a multilayer film having a film made of polyvinylidene chloride as a base material, it is cooled by long-term use. It is possible to surely prevent the refrigerant from leaking due to fatigue of the tube. Moreover, since the cooling tube is made thin, the thermal resistance of the cooling tube is not only small, but also the cooling tube follows minute irregularities such as the coating of the coil, so that the cooling performance of the coil is improved. The coil size can be reduced and the coil can be reduced in size and weight.
【００１２】また、エポキシ樹脂は熱硬化性で耐熱性が
極めて良好であるから、請求項２記載の手段のように、
絶縁材料としてエポキシ樹脂を用いれば、巻線の難燃性
がより向上する。また、シリコーンゲルは硬化した状態
は固液中間性状であるが、型内に充填する際には低粘度
の液状であるから、絶縁材料としてシリコーンゲルを用
いれば、過大な圧力で充填作業を行わなくとも、シリコ
ーンゲルは型内にあるコイルの細部までもれなく充填さ
れる。Further, since the epoxy resin is thermosetting and has very good heat resistance, as in the means according to claim 2,
When epoxy resin is used as the insulating material, the flame retardancy of the winding is further improved. Although the silicone gel is in a solid-liquid intermediate state when cured, it is a low-viscosity liquid when it is filled in the mold. Therefore, if silicone gel is used as the insulating material, the filling work will be performed with excessive pressure. If not, the silicone gel will fill all the details of the coil in the mould.
【００１３】しかも、絶縁層を形成するにあたって、請
求項３記載の手段のように、冷却チューブ内を加圧した
状態で絶縁材料の充填硬化作業を行うことにより、肉厚
の薄い冷却チューブを用いているにも係わらず、それら
の作業時に冷却チューブが潰れてしまうことを防止でき
る。In addition, when forming the insulating layer, a thin cooling tube is used by carrying out the filling and hardening operation of the insulating material while the inside of the cooling tube is pressurized, as in the means described in claim 3. However, it is possible to prevent the cooling tubes from being crushed during the work.
【００１４】さらに、絶縁材料が充填される型は、型開
きして製品を取出す等の作業が必要であるが、請求項４
記載の手段によれば、型として作用する容器を巻線の一
部として用いるので、上記作業を廃止でき、製造作業性
が向上する。Further, the mold filled with the insulating material requires work such as opening the mold to take out the product.
According to the described means, since the container acting as a mold is used as a part of the winding, the above work can be eliminated and the workability in manufacturing is improved.
【００１５】[0015]
【実施例】以下、本発明を変圧器に適用した第１実施例
について図１および図２を参照しながら説明する。尚、
変圧器の場合、コイルは、低圧側コイルと高圧側コイル
の２コイルで構成されるが、以下では、代表して１コイ
ルを説明する。即ち、絶縁材からなる巻枠兼用の内筒１
には導線２ａが巻回されて円筒形のコイル２を形成して
いる。このコイル２は内周側から外周側にかけて計５層
で構成されており、内周側から数えて２層目と３層目と
の間および３層目と４層目との間には、冷却ダクトを形
成するための間隔片３が介在されている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment in which the present invention is applied to a transformer will be described below with reference to FIGS. still,
In the case of a transformer, the coil is composed of two coils, a low voltage side coil and a high voltage side coil, but in the following, one coil will be described as a representative. That is, the inner cylinder 1 made of an insulating material and also serving as a reel
A conductive wire 2a is wound around to form a cylindrical coil 2. This coil 2 is composed of a total of 5 layers from the inner peripheral side to the outer peripheral side. Between the second layer and the third layer and between the third layer and the fourth layer, counted from the inner peripheral side, A spacing piece 3 is provided to form a cooling duct.
【００１６】コイル２の各層の上下両端部には薄肉な冷
却チューブ４が装着され、上側の冷却チューブ４の上側
および下側の冷却チューブ４の下側には端部支持部材５
が取付けられている。これら各冷却チューブ４は肉厚が
０．１ｍｍ程度に設定され、ポリ塩化ビニリデン製チュ
ーブ（具体的には「サラン（旭化成社の登録商標）シー
ムレスチューブ」）から形成されている。また、各冷却
チューブ４は、外部熱交換器（図示せず）およびポンプ
（図示せず）とループを形成するように接続されてい
る。そして、各冷却チューブ４内には、パーフロロカー
ボンからなる絶縁性の冷媒が封入されており、ポンプが
作動すると、各冷却チューブ４内の冷媒が矢印Ａ，Ｂで
示すように流通するようになっている。Thin cooling tubes 4 are attached to the upper and lower ends of each layer of the coil 2, and end support members 5 are provided above the upper cooling tubes 4 and below the lower cooling tubes 4.
Is installed. The thickness of each of these cooling tubes 4 is set to about 0.1 mm, and is formed from a polyvinylidene chloride tube (specifically, "Saran (registered trademark of Asahi Kasei Corp.) seamless tube"). Further, each cooling tube 4 is connected to an external heat exchanger (not shown) and a pump (not shown) so as to form a loop. An insulating refrigerant made of perfluorocarbon is enclosed in each cooling tube 4, and when the pump operates, the refrigerant in each cooling tube 4 flows as indicated by arrows A and B. ing.
【００１７】コイル２の外周側には、絶縁材製の外筒６
ａが設けられ、この外筒６ａと内筒１とで形成される上
面開口および下面開口は、内筒１および外筒６ａと共に
型としての容器６を構成する絶縁材製の天板６ｂおよび
底板６ｃにより閉塞されている。そして、天板６ｂおよ
び底板６ｃには、夫々複数の孔６ｄが形成されており、
前記各冷却チューブ４は孔６ｄから外部に導出されてい
る。また、容器６内には絶縁材料としてのシリコーンゲ
ルが充填硬化されている。これによって、コイル２およ
び各冷却チューブ４を覆う絶縁層７が形成され、しか
も、容器６は絶縁層７と一体化され、その外殻をなして
いる。An outer cylinder 6 made of an insulating material is provided on the outer peripheral side of the coil 2.
a is provided, and an upper surface opening and a lower surface opening formed by the outer cylinder 6a and the inner cylinder 1 constitute a top plate 6b and a bottom plate made of an insulating material that together with the inner cylinder 1 and the outer cylinder 6a constitute a container 6 as a mold It is blocked by 6c. A plurality of holes 6d are formed on the top plate 6b and the bottom plate 6c, respectively.
Each of the cooling tubes 4 is led out from the hole 6d. The container 6 is filled and hardened with silicone gel as an insulating material. As a result, the insulating layer 7 that covers the coil 2 and each cooling tube 4 is formed, and the container 6 is integrated with the insulating layer 7 and forms the outer shell thereof.
【００１８】次に、上記変圧器の製造方法について説明
する。まず、内筒１の外周に絶縁材等を介してコイル２
の１層目および２層目を巻回し、その２層目の外周に間
隔片３を介して３層目を巻回する。そして、３層目の外
周に間隔片３を介して４層目および５層目を巻回する。
この場合、コイル２の各層の巻回毎に、各層の上下端部
に冷却チューブ４を装着し、各冷却チューブ４の上下に
端部支持部材５を装着する。Next, a method of manufacturing the above transformer will be described. First, the coil 2 is provided on the outer periphery of the inner cylinder 1 via an insulating material or the like.
The first layer and the second layer are wound, and the third layer is wound around the outer circumference of the second layer with the spacing piece 3 interposed therebetween. Then, the fourth layer and the fifth layer are wound around the outer periphery of the third layer with the spacing piece 3 interposed therebetween.
In this case, the cooling tubes 4 are attached to the upper and lower ends of each layer, and the end support members 5 are attached to the upper and lower ends of each cooling tube 4 for each winding of each layer of the coil 2.
【００１９】この後、コイル２の外周を包囲するように
して外筒６ａを配置し、この外筒６ａと内筒１とでなす
上面開口および下面開口を天板６ｂおよび底板６ｃで閉
塞する。このとき、コイル２の上端から突出する各冷却
チューブ４を天板６ｂの孔６ｄから外部に導出すると共
に、コイル２の下端から突出する各冷却チューブ４を底
板６ｃの孔６ｄから外部に導出する。After that, the outer cylinder 6a is arranged so as to surround the outer circumference of the coil 2, and the upper and lower openings formed by the outer cylinder 6a and the inner cylinder 1 are closed by the top plate 6b and the bottom plate 6c. At this time, each cooling tube 4 protruding from the upper end of the coil 2 is led out through the hole 6d of the top plate 6b, and each cooling tube 4 protruding from the lower end of the coil 2 is led out through the hole 6d of the bottom plate 6c. .
【００２０】そして、各冷却チューブ４をコンプレッサ
等の流体供給装置（図示せず）に接続し、該流体供給装
置を駆動することにより、各冷却チューブ４内に空気等
の気体または水等の液体を充填して０．５ｋｇ／ｃｍ2
程度の内圧を加え、この状態で内筒１と外筒６ａとの空
間部にシリコーンゲルを充填する。そして、シリコーン
ゲルを加熱すると、シリコーンゲルが付加反応を起こ
し、所定時間放置すると、シリコーンゲルがゲル状に硬
化して絶縁層７が形成される。By connecting each cooling tube 4 to a fluid supply device (not shown) such as a compressor and driving the fluid supply device, a gas such as air or a liquid such as water is supplied into each cooling tube 4. 0.5 kg / cm 2
A certain amount of internal pressure is applied, and in this state, the space between the inner cylinder 1 and the outer cylinder 6a is filled with silicone gel. Then, when the silicone gel is heated, the silicone gel causes an addition reaction, and when left for a predetermined time, the silicone gel is hardened into a gel and the insulating layer 7 is formed.
【００２１】上記実施例によれば、変圧器を使用するに
あたっては、流体供給装置に接続されていた冷却チュー
ブ４を外部熱交換器およびポンプに接続し、冷媒を循環
させる。すると、コイル２で発生した熱は、コイル２に
密接された冷却チューブ４内を流通する冷媒に伝達さ
れ、この高温度の冷媒は、矢印Ａで示すように、冷却チ
ューブ４内を流通し外部へ輸送される。そして、外部熱
交換器を通過する際に熱交換により冷却され、再びポン
プにより吐出されて、矢印Ｂで示すように、絶縁層７内
に流通する。而して、この一連の冷媒の循環動作によ
り、コイル２が冷却される。According to the above-described embodiment, when the transformer is used, the cooling tube 4 connected to the fluid supply device is connected to the external heat exchanger and the pump to circulate the refrigerant. Then, the heat generated in the coil 2 is transferred to the refrigerant flowing in the cooling tube 4 which is in close contact with the coil 2, and the high temperature refrigerant flows in the cooling tube 4 as shown by an arrow A and is externally supplied. Be transported to. Then, when passing through the external heat exchanger, it is cooled by heat exchange, discharged again by the pump, and flows into the insulating layer 7 as shown by an arrow B. Thus, the coil 2 is cooled by this series of circulation operations of the refrigerant.
【００２２】この場合、各冷却チューブ４として、気密
性が特に良好なポリ塩化ビニリデン製のチューブを用い
たので、長期使用により冷却チューブ４が疲労して冷媒
が漏出することを確実に防止できる。しかも、冷却チュ
ーブ４は薄肉であるから、薄肉な冷却チューブ４が元来
有している熱抵抗の小ささにより、コイル２の冷却性が
向上する上、柔軟性もあるので、冷却チューブ４が導線
２ａの被覆等の微小な凹凸に密着するため、コイル２の
冷却性がより向上し、ひいては、コイル２の小形化およ
び軽量化が可能となる。In this case, since each cooling tube 4 is made of polyvinylidene chloride, which has particularly good airtightness, it is possible to reliably prevent the cooling tubes 4 from fatigued and the refrigerant leaking out due to long-term use. Moreover, since the cooling tube 4 is thin, the cooling resistance of the coil 2 is improved due to the small thermal resistance originally possessed by the thin cooling tube 4, and the cooling tube 4 is also flexible, so that Since it closely adheres to minute irregularities such as the coating of the conductor wire 2a, the cooling property of the coil 2 is further improved, and the coil 2 can be made smaller and lighter.
【００２３】しかも、絶縁層７を形成するにあたって
は、冷却チューブ４内を加圧した状態でシリコーンゲル
の充填硬化作業を行うので、肉厚の小さな冷却チューブ
４を用いているにも係わらず、それらの作業時ないしは
絶縁材料の静圧によって冷却チューブ４が潰れてしまう
虞れはない。Moreover, when the insulating layer 7 is formed, since the silicone gel is filled and hardened while the cooling tube 4 is pressurized, the cooling tube 4 having a small thickness is used. There is no possibility that the cooling tube 4 will be crushed during these operations or due to the static pressure of the insulating material.
【００２４】ところで、絶縁材料として用いたシリコー
ンゲルは、電気絶縁油として普及しているシリコーン油
と略同等の絶縁性を有するものであり、初期は低粘度の
液状をなしている。従って、シリコーンゲルの充填作業
を行う際、シリコーンゲルは液状であり、過大な圧力で
充填作業を行わなくとも、シリコーンゲルは容器６の細
部までもれなく充填される。従って、充填圧力による冷
却チューブ４の潰れを一層確実に防止できる。さらに、
シリコーンゲルの硬化時の柔軟性、即ち絶縁層７の柔軟
性は、シリコーンゲルの主成分であるジメチルポリシロ
キサンの有機基とケイ素とのモル比率Ｒ／Ｓｉに依存す
るので、モル比率Ｒ／Ｓｉを調整することにより、絶縁
層７の柔軟性を選択することができる。By the way, the silicone gel used as the insulating material has substantially the same insulating properties as the silicone oil widely used as the electric insulating oil, and is in the form of a low-viscosity liquid at the initial stage. Therefore, when performing the filling operation of the silicone gel, the silicone gel is in a liquid state, and even if the filling operation is not performed with an excessive pressure, the silicone gel is completely filled in the details of the container 6. Therefore, the collapse of the cooling tube 4 due to the filling pressure can be prevented more reliably. further,
The flexibility of the silicone gel at the time of curing, that is, the flexibility of the insulating layer 7 depends on the molar ratio R / Si of the organic group of dimethylpolysiloxane, which is the main component of the silicone gel, and silicon. By adjusting, the flexibility of the insulating layer 7 can be selected.
【００２５】また、絶縁材料を充填する際に成形型を用
いた場合には、成形型を型開きして製品を取出す一連の
作業が必要であるが、本実施例においては、型を絶縁性
の容器６から形成し、シリコーンゲルが硬化した後、容
器６を絶縁層７の外殻としたので、上記作業を廃止で
き、その結果、製造作業性が向上する。Further, when a mold is used for filling the insulating material, a series of work for opening the mold and taking out the product is required. In this embodiment, the mold is made of an insulating material. Since the container 6 is formed from the container 6 and the silicone gel is hardened and then the container 6 is used as the outer shell of the insulating layer 7, the above-described work can be eliminated, and as a result, the manufacturing workability is improved.
【００２６】図３および図４は本発明の第２実施例を示
すものであり、本実施例と前記第１実施例との相違点
は、内筒１とコイル２の最内層との間，コイル２の２層
目と３層目との間，３層目と４層目との間，最外層と絶
縁層７との間に夫々１本の冷却チューブ４を縦長なＵ字
状に設け、各冷却チューブ４の両上端部を天板６ｂの孔
６ｄから外部に導出した点にある。FIGS. 3 and 4 show a second embodiment of the present invention. The difference between this embodiment and the first embodiment is that between the inner cylinder 1 and the innermost layer of the coil 2, One cooling tube 4 is provided in a vertically long U shape between the second and third layers of the coil 2, between the third and fourth layers, and between the outermost layer and the insulating layer 7. The point is that both upper ends of each cooling tube 4 are led out from the holes 6d of the top plate 6b.
【００２７】本実施例によれば、上記第１実施例と同様
の効果を奏するのは勿論のこと、所定層の内外両側面が
冷却されるので、コイル２の冷却性がより向上し、コイ
ル２の内外の温度差が低減される。According to this embodiment, not only the same effects as those of the first embodiment are obtained, but also the inner and outer side surfaces of the predetermined layer are cooled, so that the cooling performance of the coil 2 is further improved, The temperature difference between the inside and the outside of 2 is reduced.
【００２８】尚、上記実施例においては、内筒１とコイ
ル２の最内層との間，コイル２の所定層間，コイル２の
最外層と絶縁層７との間に夫々１本の冷却チューブ４を
介在したが、介在する冷却チューブ４の本数や冷却チュ
ーブ４内を循環する冷媒の量を増加することにより、所
望の放熱量に調整できる。In the above embodiment, one cooling tube 4 is provided between the inner cylinder 1 and the innermost layer of the coil 2, a predetermined layer of the coil 2 and between the outermost layer of the coil 2 and the insulating layer 7. However, the desired heat radiation amount can be adjusted by increasing the number of intervening cooling tubes 4 or the amount of the refrigerant circulating in the cooling tubes 4.
【００２９】図５および図６は本発明の第３実施例を示
すものであり、次に説明する点が上記第１実施例と相違
している。即ち、コイル８は、導線２ａを円板状に巻回
してなるコイルユニット８ａを複数の間隔片９を介して
内筒１の上下方向へ積層した形態に構成され、コイルユ
ニット８ａ相互間に介在された間隔片９はコイル８の外
周部から突出している。そして、各間隔片９の突出部分
には１個おきに冷却チューブ４が載置され、これによ
り、コイルユニット８ａの外周面には１個おきに冷却チ
ューブ４が密接されている。また、外筒６ａには孔６ｄ
が形成されており、冷却チューブ４の両端部は外筒６ａ
の孔６ｄから外部に導出されている。5 and 6 show a third embodiment of the present invention, which is different from the first embodiment in the points described below. That is, the coil 8 is configured in such a manner that the coil unit 8a formed by winding the conductor wire 2a in a disc shape is laminated in the vertical direction of the inner cylinder 1 via the plurality of spacing pieces 9, and the coil unit 8a is interposed between the coil units 8a. The separated spacing piece 9 projects from the outer peripheral portion of the coil 8. Then, every other cooling tube 4 is placed on the protruding portion of each spacing piece 9, whereby every other cooling tube 4 is in close contact with the outer peripheral surface of the coil unit 8a. Further, the outer cylinder 6a has a hole 6d.
Is formed, and both ends of the cooling tube 4 are formed into the outer cylinder 6a.
It is led out from the hole 6d.
【００３０】本実施例によれば、上記第１実施例と同様
の効果を奏するのは勿論のこと、冷却チューブ４をコイ
ル８に装着するにあたっては、コイル８形成後に冷却チ
ューブ４を間隔片９上に載置すれば良く、これにより、
冷却チューブ４の装着作業性が向上する。しかも、導線
２ａの巻回量が少ない円板状のコイルユニット８ａごと
に冷却チューブ４を設けているので、コイル８の冷却性
がより向上し、コイル８の内外の温度差がより低減され
る。According to this embodiment, the same effects as those of the first embodiment can be obtained, and when the cooling tube 4 is attached to the coil 8, the cooling tube 4 is formed after the coil 8 is formed. Just put it on top,
The workability of mounting the cooling tube 4 is improved. Moreover, since the cooling tube 4 is provided for each disk-shaped coil unit 8a in which the winding amount of the conductor wire 2a is small, the cooling performance of the coil 8 is further improved, and the temperature difference between the inside and outside of the coil 8 is further reduced. .
【００３１】尚、上記実施例では、２層のコイルユニッ
ト８ａに１本の割合で冷却チューブ４を設けたが、例え
ば各コイルユニット８ａに冷却チューブ４を設けたり、
または、３個のコイルユニット８ａに１本の割合で冷却
チューブ４を設けたりする等、冷却チューブ４を設ける
割合は適宜変更することができる。In the above embodiment, one cooling tube 4 is provided in the two-layer coil unit 8a, but for example, each coil unit 8a may be provided with the cooling tube 4.
Alternatively, the ratio of the cooling tubes 4 to be provided can be appropriately changed, for example, the cooling tubes 4 may be provided to one of the three coil units 8a.
【００３２】図７および図８は本発明の第４実施例を示
すものであり、上記第３実施例と相違する点は、コイル
ユニット８ａ相互間に１個おきに、間隔片を兼用して冷
却チューブ４を挟み込んだ点にある。本実施例によれ
ば、上記第３実施例と同様の効果を奏するのは勿論のこ
と、所定のコイルユニット８ａの上下両側面が冷却され
るので、コイル８の冷却性がより向上し、コイル８の内
外の温度差がより低減される。この場合、コイルユニッ
ト８ａ相互間に１個おきの割合で冷却チューブ４を設け
たが、その割合は適宜変更できる。FIG. 7 and FIG. 8 show a fourth embodiment of the present invention. The difference from the third embodiment is that every other coil unit 8a is provided with a spacing piece. The point is that the cooling tube 4 is sandwiched. According to the present embodiment, not only the same effects as those of the third embodiment are obtained, but also the upper and lower side surfaces of the predetermined coil unit 8a are cooled, so that the cooling performance of the coil 8 is further improved, The temperature difference between the inside and the outside of 8 is further reduced. In this case, the cooling tubes 4 are provided every other unit between the coil units 8a, but the ratio can be appropriately changed.
【００３３】また、上記第１ないし第４実施例において
は、絶縁材料としてシリコーンゲルを用いたが、絶縁材
料としては、これに限られるものではなく、例えばエポ
キシ樹脂を用いても良い。この場合、容器６の代わりに
成形型を用い、まず、該成形型のキャビティ内に冷却チ
ューブ４が装着されたコイル２または８を収容する。次
に、冷却チューブ４内に気体または液体を充填して０．
５ｋｇ／ｃｍ2 程度の内圧を加え、キャビティ内を真空
にした状態でキャビティ内に溶融されたエポキシ樹脂を
注入硬化させ、絶縁層を形成する。そして最後に、該成
形型を開いて巻線を取出す。この場合、エポキシ樹脂は
耐熱性が極めて良好であるため、巻線の難燃性がより優
れたものになる。Although silicone gel is used as the insulating material in the first to fourth embodiments, the insulating material is not limited to this, and for example, epoxy resin may be used. In this case, a mold is used instead of the container 6, and first, the coil 2 or 8 having the cooling tube 4 mounted therein is housed in the cavity of the mold. Next, the cooling tube 4 is filled with a gas or a liquid, and
An internal pressure of about 5 kg / cm 2 is applied, and while the inside of the cavity is evacuated, the melted epoxy resin is injected and cured to form an insulating layer. And finally, the mold is opened and the winding is taken out. In this case, since the epoxy resin has extremely good heat resistance, the flame retardancy of the winding becomes more excellent.
【００３４】尚、上記各実施例においては、冷却チュー
ブ４としてポリ塩化ビニリデン製チューブを用いたが、
これに限られるものではなく、例えばポリ塩化ビニリデ
ン製フィルムを基材とした多層フィルム製のチューブを
用いても良い。この多層フィルム製チューブは、ポリ塩
化ビニリデン製チューブと同等の気密性を備えているの
で、上記各実施例と同様、長期使用に伴う冷媒漏出を確
実に防止できる。Although a polyvinylidene chloride tube is used as the cooling tube 4 in each of the above embodiments,
The present invention is not limited to this, and for example, a tube made of a multilayer film having a film made of polyvinylidene chloride as a base material may be used. Since this multi-layer film tube has airtightness equivalent to that of polyvinylidene chloride tube, it is possible to surely prevent the refrigerant from leaking out due to long-term use, like the above-mentioned embodiments.
【００３５】また、特にエポキシ樹脂を充填する際の液
圧等で冷却チューブ４が潰れないようにするために０．
５ｋｇ／ｃｍ2 程度の内圧を加えており、そのため、冷
却チューブ４には、１．５ｋｇ／ｃｍ2 程度の圧力に耐
える強度が必要であるが、冷却チューブ４としてポリ塩
化ビニリデン製チューブまたはポリ塩化ビニリデン製フ
ィルムを基材とした多層フィルム製チューブを用いた場
合、強度の面からは肉厚は０．０５ｍｍ以上あれば良
く、一方、冷却チューブ４がコイル２または８に密着す
るための柔軟性を考えると、その肉厚は０．１５ｍｍ以
下であることが望ましい。Further, in order to prevent the cooling tube 4 from being crushed by the liquid pressure or the like when the epoxy resin is filled in, especially,
Since an internal pressure of about 5 kg / cm 2 is applied, therefore, the cooling tube 4 needs to have a strength to withstand a pressure of about 1.5 kg / cm 2 , but the cooling tube 4 is made of polyvinylidene chloride or polyvinyl chloride. In the case of using a multilayer film tube having a vinylidene film as a base material, the wall thickness may be 0.05 mm or more from the viewpoint of strength, while the flexibility for the cooling tube 4 to adhere to the coil 2 or 8 Considering the above, it is desirable that the wall thickness is 0.15 mm or less.
【００３６】[0036]
【発明の効果】以上の説明から明らかなように、本発明
の静止誘導機器巻線およびその製造方法によれば次のよ
うな優れた効果を奏する。請求項１記載の手段によれ
ば、冷却チューブとして、特に気密性が高いポリ塩化ビ
ニリデン製チューブまたはポリ塩化ビニリデン製フィル
ムを基材とした多層フィルム製チューブを用いているの
で、長期使用により冷却チューブが疲労して冷媒が漏出
することを確実に防止できる。しかも、冷却チューブの
熱抵抗が小となり、また、コイルの被覆等の微小な凹凸
に追従するので、コイルの冷却性が向上し、ひいては、
コイルの小形化および軽量化が可能となる。As is apparent from the above description, the static induction device winding and the method of manufacturing the same according to the present invention have the following excellent effects. According to the means described in claim 1, since the cooling tube is a tube made of polyvinylidene chloride having a particularly high airtightness or a tube made of a multilayer film having a film made of polyvinylidene chloride as a base material, the cooling tube is used for a long time. It is possible to reliably prevent the refrigerant from leaking due to fatigue. Moreover, the thermal resistance of the cooling tube becomes small, and since it follows minute irregularities such as the coating of the coil, the cooling performance of the coil is improved, and
It is possible to reduce the size and weight of the coil.
【００３７】請求項２記載の手段によれば、絶縁材料と
してエポキシ樹脂を用いた場合には、燃燃性がより優れ
たものになり、また、シリコーンゲルを用いた場合に
は、過大な圧力で充填作業を行わなくとも、型内の細部
までもれなく充填できる。According to the second aspect, when the epoxy resin is used as the insulating material, the flammability is more excellent, and when the silicone gel is used, the excessive pressure is applied. It is possible to fill in all the details in the mold without performing the filling work in.
【００３８】請求項３記載の手段によれば、絶縁層を形
成するにあたっては、冷却チューブ内を加圧した状態で
絶縁材料の充填硬化作業を行うので、肉厚の薄い冷却チ
ューブを用いているにも係わらず、それらの作業時に冷
却チューブが潰れてしまう虞れはない。According to the third aspect of the present invention, when forming the insulating layer, the work of filling and hardening the insulating material is performed while the cooling tube is pressurized, so a thin cooling tube is used. Nevertheless, there is no risk that the cooling tube will collapse during these operations.
【００３９】請求項４記載の手段によれば、型としての
容器を巻線の一部としているので、成形型を型開きして
製品を取出す等の作業を廃止でき、その結果、製造作業
性が向上する。According to the means of claim 4, since the container as the mold is a part of the winding, the work such as opening the molding mold and taking out the product can be eliminated, and as a result, the manufacturing workability is improved. Is improved.
【図１】本発明の第１実施例を一部破断して示す斜視図FIG. 1 is a perspective view showing a first embodiment of the present invention partially broken away.
【図２】縦断側面図[Figure 2] Vertical side view
【図３】本発明の第２実施例を示す図１相当図FIG. 3 is a view corresponding to FIG. 1 showing a second embodiment of the present invention.
【図４】図２相当図FIG. 4 is a view corresponding to FIG.
【図５】本発明の第３実施例を示す図１相当図FIG. 5 is a view corresponding to FIG. 1 showing a third embodiment of the present invention.
【図６】図２相当図FIG. 6 is a view corresponding to FIG.
【図７】本発明の第４実施例を示す図１相当図FIG. 7 is a diagram corresponding to FIG. 1 showing a fourth embodiment of the present invention.
【図８】図２相当図FIG. 8 is a view corresponding to FIG.
図面中、２はコイル、４は冷却チューブ、６は容器
（型）、７は絶縁層、８はコイルを示す。In the drawings, 2 is a coil, 4 is a cooling tube, 6 is a container (type), 7 is an insulating layer, and 8 is a coil.
Claims (4)
され該コイル冷却用の冷媒が流通する肉厚の薄い絶縁性
の冷却チューブと、前記コイルおよび冷却チューブを覆
う絶縁層とを備え、 前記冷却チューブとして、ポリ塩化ビニリデン製チュー
ブまたはポリ塩化ビニリデン製フィルムを基材とした多
層フィルム製チューブを用いたことを特徴とする静止誘
導機器巻線。1. A coil, a thin-walled insulating cooling tube which is mounted in contact with the coil and through which a cooling medium for cooling the coil flows, and an insulating layer which covers the coil and the cooling tube, A static induction device winding characterized in that a polyvinylidene chloride tube or a multilayer film tube using a polyvinylidene chloride film as a base material is used as the cooling tube.
エポキシ樹脂を用いたことを特徴とする請求項１記載の
静止誘導機器巻線。2. The static induction device winding according to claim 1, wherein silicone gel or epoxy resin is used as the insulating material.
され該コイル冷却用の冷媒が流通する肉厚の薄い絶縁性
の冷却チューブと、前記コイルおよび冷却チューブを覆
う絶縁層とを備え、 前記冷却チューブが装着されたコイルを型内に収容し、
この冷却チューブ内を加圧した状態で、前記型内に絶縁
材料を充填硬化することを特徴とする静止誘導機器巻線
の製造方法。3. A coil, a thin insulating cooling tube which is mounted in contact with the coil and through which a coolant for cooling the coil flows, and an insulating layer which covers the coil and the cooling tube. The coil with the cooling tube is housed in the mold,
A method of manufacturing a winding of a static induction device, characterized in that an insulating material is filled in the mold and cured while the inside of the cooling tube is pressurized.
料が硬化した後に、絶縁層の外殻をなすことを特徴とす
る請求項３記載の静止誘導機器巻線の製造方法。4. The method for manufacturing a static induction device winding according to claim 3, wherein the mold is formed of a container made of an insulating material and forms an outer shell of the insulating layer after the insulating material is hardened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5182287A JPH0737724A (en) | 1993-07-23 | 1993-07-23 | Stationary induction equipment winding and its manufacture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5182287A JPH0737724A (en) | 1993-07-23 | 1993-07-23 | Stationary induction equipment winding and its manufacture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0737724A true JPH0737724A (en) | 1995-02-07 |
Family
ID=16115647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5182287A Pending JPH0737724A (en) | 1993-07-23 | 1993-07-23 | Stationary induction equipment winding and its manufacture |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0737724A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003107364A1 (en) * | 2001-12-21 | 2003-12-24 | Abb T & D Technology Ltd. | Integrated cooling duct for resin-encapsulated distribution transformer coils |
| EP2858076A1 (en) * | 2013-10-04 | 2015-04-08 | Hamilton Sundstrand Corporation | Magnetic devices with integral cooling channels |
| US9373436B2 (en) | 2014-07-07 | 2016-06-21 | Hamilton Sundstrand Corporation | Liquid cooled inductors |
| EP3373314A1 (en) * | 2017-03-10 | 2018-09-12 | ABB Schweiz AG | Cooling non-liquid immersed transformers |
| EP3731246A1 (en) * | 2019-04-25 | 2020-10-28 | The Boeing Company | Self-contained cooling device for an electromagnetic interference filter |
-
1993
- 1993-07-23 JP JP5182287A patent/JPH0737724A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7023312B1 (en) | 2001-12-21 | 2006-04-04 | Abb Technology Ag | Integrated cooling duct for resin-encapsulated distribution transformer coils |
| US7647692B2 (en) | 2001-12-21 | 2010-01-19 | Abb Technology Ag | Method of manufacturing a transformer coil having cooling ducts |
| WO2003107364A1 (en) * | 2001-12-21 | 2003-12-24 | Abb T & D Technology Ltd. | Integrated cooling duct for resin-encapsulated distribution transformer coils |
| US10225960B2 (en) | 2013-10-04 | 2019-03-05 | Hamilton Sundstrand Corporation | Magnetic devices with integral cooling channels |
| EP2858076A1 (en) * | 2013-10-04 | 2015-04-08 | Hamilton Sundstrand Corporation | Magnetic devices with integral cooling channels |
| US9299488B2 (en) | 2013-10-04 | 2016-03-29 | Hamilton Sundstrand Corporation | Magnetic devices with integral cooling channels |
| US9373436B2 (en) | 2014-07-07 | 2016-06-21 | Hamilton Sundstrand Corporation | Liquid cooled inductors |
| EP3373314A1 (en) * | 2017-03-10 | 2018-09-12 | ABB Schweiz AG | Cooling non-liquid immersed transformers |
| WO2018162568A1 (en) * | 2017-03-10 | 2018-09-13 | Abb Schweiz Ag | Non-liquid immersed transformers with improved coil cooling |
| CN110383403A (en) * | 2017-03-10 | 2019-10-25 | Abb瑞士股份有限公司 | With the cooling non-liquid soaking transformer of improved coil |
| US11355273B2 (en) | 2017-03-10 | 2022-06-07 | Hitachi Energy Switzerland Ag | Non-liquid immersed transformers with improved coil cooling |
| CN110383403B (en) * | 2017-03-10 | 2022-09-13 | 日立能源瑞士股份公司 | Non-liquid immersed transformer with improved coil cooling |
| EP3731246A1 (en) * | 2019-04-25 | 2020-10-28 | The Boeing Company | Self-contained cooling device for an electromagnetic interference filter |
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