JPH0457088B2 - - Google Patents
Info
- Publication number
- JPH0457088B2 JPH0457088B2 JP59071820A JP7182084A JPH0457088B2 JP H0457088 B2 JPH0457088 B2 JP H0457088B2 JP 59071820 A JP59071820 A JP 59071820A JP 7182084 A JP7182084 A JP 7182084A JP H0457088 B2 JPH0457088 B2 JP H0457088B2
- Authority
- JP
- Japan
- Prior art keywords
- silicone rubber
- silicone
- insulating layer
- insulated wire
- dust
- 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
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/32—Windings characterised by the shape, form or construction of the insulation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
- H01F41/12—Insulating of windings
- H01F41/125—Other insulating structures; Insulating between coil and core, between different winding sections, around the coil
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F5/00—Coils
- H01F5/06—Insulation of windings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/12—Impregnating, moulding insulation, heating or drying of windings, stators, rotors or machines
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Manufacture Of Motors, Generators (AREA)
- Insulating Of Coils (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
- Motor Or Generator Frames (AREA)
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明は粉塵等に対する耐摩耗性を大きくした
絶縁線輪の製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a method for manufacturing an insulated wire ring with increased wear resistance against dust and the like.
セメント製造、製粉、砂利採取等のように粉塵
が多量に浮遊する環境で使われる回転電機の絶縁
線輪には、これらの粉塵が衝突しても摩耗しない
ような絶縁が必要である。絶縁線輪は一般に電磁
振動を少なくするために、剛性の大きい絶縁が良
いとされている。絶縁線輪の一般的に製造方法と
しては、少量の接着剤を含んだマイカテープを導
体に巻回した後、エポキシ等の熱硬化性樹脂を真
空加圧含浸し、加熱硬化する真空加圧含浸法と、
予め十分なエポキシ等の熱硬化性樹脂からなる接
着剤を含んだマイカテープを導体に巻回した後、
加熱加圧成形硬化するレジンリツチ法とがある。
いずれの方法でも対地絶縁組織中に含まれる接着
剤あるいは含浸樹脂は硬化後、硬くて弾力性がな
いため、前述の粉塵の衝突による摩耗には弱いも
のである。そこで、特公昭47−48322号公報に示
されているように、粉塵の多量に浮遊する環境で
使われる回転電機の絶縁線輪の対地絶縁層の表面
に基布入りシリコーンゴムテープを巻回する方法
が知られていた。しかし、この方法では、シリコ
ーンゴムテープにガラスと思われる基布が入つて
いるため、粉塵の衝突により基布が摩耗し、この
粉塵により絶縁が損傷するので、耐摩耗性の向上
が不十分であるという問題があつた。また、線輪
１本ずつにシリコーンゴムテープを巻回するた
め、多大な工数と高価な材料を必要とするという
問題があつた。
The insulated wire wheels of rotating electric machines used in environments where large amounts of dust are suspended, such as in cement manufacturing, flour milling, and gravel extraction, require insulation that will not wear out even when the dust collides with them. Insulated coils are generally considered to have high rigidity in order to reduce electromagnetic vibration. The general manufacturing method for insulated wire rings is vacuum pressure impregnation, in which a mica tape containing a small amount of adhesive is wound around a conductor, and then a thermosetting resin such as epoxy is impregnated with vacuum pressure and hardened by heating. law and
After wrapping mica tape containing enough adhesive made of thermosetting resin such as epoxy around the conductor,
There is a resin rich method that hardens by heating and pressing.
In either method, the adhesive or impregnated resin contained in the ground insulation structure is hard and inelastic after hardening, and is therefore susceptible to abrasion due to the above-mentioned dust collision. Therefore, as shown in Japanese Patent Publication No. 47-48322, a method is proposed in which a silicone rubber tape containing a base fabric is wound around the surface of the ground insulation layer of the insulated wire ring of a rotating electric machine used in an environment with a large amount of suspended dust. was known. However, with this method, since the silicone rubber tape contains a base fabric that is thought to be glass, the base fabric is worn out by dust collisions, and the insulation is damaged by this dust, so the improvement in abrasion resistance is insufficient. There was a problem. Furthermore, since the silicone rubber tape is wound around each wire, there is a problem in that a large number of man-hours and expensive materials are required.
本発明は安価な材料を使用し、粉塵との衝突な
どによりはがれ落ちる危険のない、堅固で耐摩耗
性の高い被覆を少ない作業時間で簡単に設けるこ
とのできる絶縁線輪の製造方法を提供することを
目的とする。
The present invention provides a method for manufacturing an insulated wire ring that uses inexpensive materials and can easily provide a strong and highly wear-resistant coating in a short time without the risk of peeling off due to collision with dust, etc. The purpose is to
本発明においては、導体の周囲に全含浸方式の
対地絶縁層を設け、対地絶縁層の外側にシリコー
ンプライマを塗布乾燥した後、その外側にシリコ
ーンゴムデイスパージヨンを塗布乾燥してシリコ
ーンゴム外被を形成したことを特徴とするもので
ある。
In the present invention, a fully impregnated ground insulating layer is provided around the conductor, and after a silicone primer is applied and dried on the outside of the ground insulating layer, a silicone rubber dispersion is applied on the outside and dried to cover the silicone rubber outer layer. It is characterized by the formation of
〔発明の実施例〕
以下、本発明の一実施例について、図面を参照
して説明する。絶縁被覆を有する平角導線からな
る素線を２列７段に配置した導体１に、少量の接
着剤を含んだマイカテープを巻回した線輪の直線
部を図示しない鉄心のスロツトに収納し、図示し
ないスロツト用楔やコイルエンド用スペーサ、コ
イルエンド糸縛りなどにより支持固定をした後、
この線輪を鉄心ごとタンクに入れ、真空脱気した
後、真空下でエポキシ樹脂を送込み、加圧含浸し
た後、タンクから取出し、加熱硬化するいわゆる
全含浸方式の絶縁を施す。２はこのようにして形
成された対地絶縁層である。然る後、線輪、楔、
糸、スペーサ、鉄心など露出部分のすべてを、清
浄で乾燥状態においてシリコーンプライマ（例え
ばダウコーニング社商品名SH−4094）を刷毛塗
り、浸漬、吹付けなどの方法により、なるべく薄
く塗布し、風乾のまま15分以上放置してシリコー
ンプライマ被膜３を形成する。その後、シリコー
ンポリマと架橋剤を主成分としたシリコーン樹脂
を工業用ガソリンなどに溶解させ、無機充填剤を
均等に分散させた一液性常温加硫形のシリコーン
ゴムデイスパージヨン（例えばダウコーニング社
商品名SH−1890）を塗布し、塗布後、常温常湿
の雰囲気で24時間以上の自然乾燥を行なう。これ
によりシリコーンゴムデイスパージヨンは空気中
に含まれる湿気により、ゴム状に硬化し、高強度
のゴム状塗膜であるシリコーンゴム外被４を形成
する。尚このシリコーンゴム外被４の厚さは約
0.3〜１mm程度にする。[Embodiment of the Invention] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. A conductor 1 consisting of rectangular conductor wires with insulation coating arranged in two rows and seven stages is wrapped with mica tape containing a small amount of adhesive, and the straight part of the wire is housed in a slot of an iron core (not shown). After supporting and fixing with slot wedges, coil end spacers, coil end thread ties, etc. (not shown),
This wire ring is placed in a tank together with the iron core, and after vacuum degassing, epoxy resin is introduced under vacuum and impregnated under pressure, and then taken out from the tank and heat-cured for insulation using the so-called full impregnation method. 2 is the ground insulating layer formed in this way. After that, the wire ring, wedge,
Apply a silicone primer (for example, Dow Corning's product name SH-4094) as thinly as possible to all exposed parts such as threads, spacers, and iron cores in a clean and dry state by brushing, dipping, or spraying, and then air dry. Leave as is for 15 minutes or more to form silicone primer film 3. Then, a silicone resin containing a silicone polymer and a crosslinking agent as its main components is dissolved in industrial gasoline, etc., and an inorganic filler is evenly dispersed to create a one-component room-temperature vulcanizable silicone rubber dispersion (for example, Dow Corning Co., Ltd.). After application, dry naturally for at least 24 hours at room temperature and humidity. As a result, the silicone rubber dispersion is cured into a rubber-like state by the moisture contained in the air, forming a silicone rubber outer cover 4 which is a high-strength rubber-like coating film. The thickness of this silicone rubber outer covering 4 is approximately
The thickness should be approximately 0.3 to 1 mm.
次に作用について説明する。 Next, the effect will be explained.
シリコーンプライマの下地塗りによるシリコー
ンプライマ被膜３が対地絶縁層２とシリコーンゴ
ム外被４の間にあるから、シリコーンゴム外被４
の接着が良好になり、粉塵と衝突してもシリコー
ンゴム外被４がはがれることがない。そして対地
絶縁層２はエポキシ樹脂による全含浸絶縁である
ために、絶縁線輪全体の剛性は申し分ない上に、
シリコーンゴムテープのように耐摩耗性に劣る基
布の入つているものとは違つて、基布の入つてい
ないシリコーンゴムデイスパージヨンの塗布乾燥
によるシリコーンゴム外被４があるので、その弾
性により、粉塵との衝突エネルギを緩和して耐摩
耗性は抜群である。例円ばガラスホーニングマシ
ンで同一条件で試験した場合、シリコーンゴム外
被４を設けない２mm厚さの従来絶縁層２をガラス
ビーズが貫通して導体１に達する時間は、本実施
例による厚さ0.3mmのシリコーンゴム外被４を有
する同じ絶縁層２をガラスビーズが貫通する時間
の約1/15であつた。また、厚さ0.3mmの薄い基布
入シリコーンゴムテープを巻回することによつ
て、シリコーンゴム外被を得た同じ絶縁層を、吹
付けガラスビーズが貫通する時間は、本実施例の
場合の1/2であつたこからも証明される。また、
シリコーンゴム外被４を有しているため、耐水
性、電気絶縁性、耐トラツキング性に優れた絶縁
線輪となるし、線輪と鉄心、楔、糸、スペーサ等
の他の部品と一体的に硬化するため、支持固定の
効果が向上する。そして、本実施例を従来知られ
ている対地絶縁層の表面にシリコーンゴムテープ
を巻回する方法と比べると、所要作業時間は前者
が後者の約1/8で、極めて簡便な方法であるとい
える。また後者の場合、シリコーンゴムテープが
下地と接着不十分なため、部分的にはがれが生
じ、空隙ができるため、この部分で放電が起き、
劣化を促進するという不都合もあつたのに比べ、
本実施例ではそのようなことが発生せず、高信頼
性であることも分つた。 Since the silicone primer coating 3 formed by undercoating the silicone primer is between the ground insulating layer 2 and the silicone rubber outer sheath 4, the silicone rubber outer sheath 4
has good adhesion, and the silicone rubber jacket 4 will not peel off even if it collides with dust. Since the ground insulation layer 2 is completely impregnated with epoxy resin, the rigidity of the entire insulated wire is perfect, and
Unlike silicone rubber tapes that contain a base fabric that has poor abrasion resistance, the silicone rubber outer cover 4 is made by applying and drying a silicone rubber dispersion that does not contain a base fabric, so its elasticity It reduces the energy of collision with dust and has excellent wear resistance. For example, when tested under the same conditions using a glass honing machine, the time it takes for glass beads to penetrate the conventional insulating layer 2 with a thickness of 2 mm without the silicone rubber jacket 4 and reach the conductor 1 is longer than the thickness according to this embodiment. It took approximately 1/15 of the time for a glass bead to penetrate the same insulating layer 2 with a silicone rubber jacket 4 of 0.3 mm. In addition, the time required for the blown glass beads to penetrate the same insulating layer obtained with a silicone rubber outer covering by winding a thin silicone rubber tape with a base fabric of 0.3 mm thickness is as follows in this example. This is also proven from the 1/2 test. Also,
Because it has a silicone rubber jacket 4, it becomes an insulated wire ring with excellent water resistance, electrical insulation, and tracking resistance, and the wire ring is integrated with other parts such as cores, wedges, threads, and spacers. Because it hardens, the effect of supporting and fixing is improved. Comparing this example with the conventionally known method of wrapping a silicone rubber tape around the surface of the ground insulation layer, the work time required for the former is approximately 1/8 that of the latter, making it an extremely simple method. . In the latter case, the silicone rubber tape does not adhere well to the base, so it peels off in parts and creates voids, causing electrical discharge in these areas.
Compared to the inconvenience of accelerating deterioration,
In this example, such a problem did not occur, and it was found that the reliability was high.
尚、上記実施例においては、線輪を鉄心のスロ
ツトに収納した後、シリコーンプライマ並びにシ
リコーンゴムデイスパージヨンを塗布した方法に
ついて述べたが、必要に応じて、鉄心のスロツト
に収納する前に絶縁層２の表面に予め同様の方法
でシリコーンゴム外被４を形成した絶縁線輪と
し、これを鉄心のスロツトに収納した後、楔、
糸、スペーサ等により支持固定しても、上記実施
例に準じた作用効果が得られるから、そのように
してもよい。また、上記実施例では対地絶縁層２
をマイカテープと熱硬化性樹脂とで形成したが、
ガラステープや高分子フイルム等の絶縁層にして
も、上記実施例に準じた作用効果が得られるか
ら、そのようにしてもよい。 In the above example, a method was described in which silicone primer and silicone rubber dispersion were applied after the wire ring was stored in the slot of the iron core. A silicone rubber sheath 4 was previously formed on the surface of the layer 2 in the same manner as an insulated wire ring, and after storing this in the slot of the iron core, a wedge was formed.
Even if it is supported and fixed using threads, spacers, etc., the same effects as those of the above embodiments can be obtained, so it is also possible to do so. In addition, in the above embodiment, the ground insulating layer 2
was formed from mica tape and thermosetting resin,
Even if an insulating layer such as a glass tape or a polymer film is used, the effects similar to those of the above embodiments can be obtained, so it is also possible to use such an insulating layer.
以上説明したように、本発明によれば堅固で耐
摩耗性の高いシリコーンゴム外被からなる被覆を
有しており、耐摩耗性、耐水性、耐トラツキング
性、絶縁特性に優れ、振動などにも強い絶縁線輪
を少ない作業時間で簡単に製造できる方法とな
る。
As explained above, the present invention has a hard and highly abrasion-resistant silicone rubber outer covering, which has excellent abrasion resistance, water resistance, tracking resistance, and insulation properties, and is resistant to vibrations, etc. It is also a method to easily produce strong insulated wire in a short amount of time.
図面は本発明の方法の一実施例で製造した絶縁
線輪を示す横断面図である。
１……導体、２……対地絶縁層、３……シリコ
ーンプライマ被膜、４……シリコーンゴム外被。
The drawing is a cross-sectional view showing an insulated wire ring manufactured by an embodiment of the method of the present invention. DESCRIPTION OF SYMBOLS 1...Conductor, 2...Ground insulation layer, 3...Silicone primer coating, 4...Silicone rubber outer coating.
Claims (1)
け、対地絶縁層の外側にシリコーンプライマを塗
布乾燥した後、その外側にシリコーンゴムデイス
パージヨンを塗布乾燥してシリコーンゴム外被を
形成したことを特徴とする絶縁線輪の製造方法。1. A fully impregnated ground insulating layer is provided around the conductor, and a silicone primer is applied to the outside of the ground insulating layer and dried, and then a silicone rubber dispersion is applied to the outside and dried to form a silicone rubber outer covering. A method for manufacturing an insulated wire ring characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7182084A JPS60216525A (en) | 1984-04-12 | 1984-04-12 | Manufacture of insulated coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7182084A JPS60216525A (en) | 1984-04-12 | 1984-04-12 | Manufacture of insulated coil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60216525A JPS60216525A (en) | 1985-10-30 |
| JPH0457088B2 true JPH0457088B2 (en) | 1992-09-10 |
Family
ID=13471567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7182084A Granted JPS60216525A (en) | 1984-04-12 | 1984-04-12 | Manufacture of insulated coil |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60216525A (en) |
-
1984
- 1984-04-12 JP JP7182084A patent/JPS60216525A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60216525A (en) | 1985-10-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |