JP3951140B2 - Submerged motor stator coil - Google Patents

Submerged motor stator coil Download PDF

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JP3951140B2
JP3951140B2 JP2004126548A JP2004126548A JP3951140B2 JP 3951140 B2 JP3951140 B2 JP 3951140B2 JP 2004126548 A JP2004126548 A JP 2004126548A JP 2004126548 A JP2004126548 A JP 2004126548A JP 3951140 B2 JP3951140 B2 JP 3951140B2
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coil
insulator
stator
stator coil
submerged motor
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JP2005312199A (en
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栄治 大角
耕司 西山
隆昭 山本
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西芝電機株式会社
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Description

本発明は、液化されたジメチルエーテル、LPG、LNG、エチレン、プロピレン等の荷液取り出し用サブマージドモータポンプの駆動用サブマージドモータのステータコイルに関する。   The present invention relates to a stator coil of a submerged motor for driving a submerged motor pump for taking out liquid cargo such as liquefied dimethyl ether, LPG, LNG, ethylene and propylene.

従来のサブマージドモータのステータコイル1は、図3に示すように、固定子鉄心2に納められている。また、ステータコイル1は、エナメル銅線を乱巻に巻き回した構造となっており、ステータコイル1のコイルエンド部3は、ガラステープ4により、らせん状に巻かれ固定されている。コイル接続側には、ケーブル5が接続されている。   A stator coil 1 of a conventional submerged motor is housed in a stator core 2 as shown in FIG. The stator coil 1 has a structure in which enameled copper wire is wound in a random manner. The coil end portion 3 of the stator coil 1 is spirally wound and fixed by a glass tape 4. A cable 5 is connected to the coil connection side.

ステータ鉄心2のスロット出口部は図4に示すように、スロット絶縁物6によりステータコイル1は絶縁され、ステータ鉄心2に納められている。コイルエンド部3は、図示しないガラステープ4で固定されているが、コイル素材であるエナメル銅線が露出したコイル構造となっている。
また、他のコイル構造として、産業用高圧モータに多く用いられる亀甲型の型巻コイルを用いる場合もある。
As shown in FIG. 4, the stator coil 1 is insulated by a slot insulator 6 at the slot outlet portion of the stator core 2 and is housed in the stator core 2. The coil end portion 3 is fixed by a glass tape 4 (not shown), but has a coil structure in which an enameled copper wire that is a coil material is exposed.
Further, as another coil structure, a turtle shell-shaped coil coil often used for an industrial high-voltage motor may be used.

しかしながら、前者のサブマージドモータのステータコイルは、製作時に発生するコイル素材の加工傷により、その表面に経年的に液中の汚れが蓄積され、これにより絶縁抵抗を低下させていた。   However, the former submerged motor stator coil has accumulated dirt in the liquid with time on the surface due to processing flaws of the coil material generated at the time of manufacture, thereby reducing the insulation resistance.

また後者の産業用高圧モータに多く用いられる亀甲型の型巻コイルは、ステータコイルを製造するのに専用の製造設備が必要であり、製造工数も多くかかるため、サブマージドモータの製造コストのアップの要因となっていた。さらに、亀甲型の型巻コイルを用いると、コイルエンドの寸法が前者の乱巻コイルに比べ、大きくなり、サブマージドモータの大型化に繋がっていた。   In addition, the turtle shell-shaped coiled coils often used in the latter industrial high-voltage motors require a dedicated manufacturing facility for manufacturing the stator coil, which requires a large number of manufacturing steps, thus increasing the manufacturing cost of the submerged motor. It was a factor. Furthermore, when the turtle shell type coiled coil is used, the dimension of the coil end becomes larger than that of the former random winding coil, which leads to an increase in the size of the submerged motor.

本発明は、上記状況に対処するためになされたもので、その課題は、長期使用しても絶縁性能に優れ、かつ小型化可能なサブマージドモータのステータコイルを提供することにある。   The present invention has been made to cope with the above situation, and an object of the present invention is to provide a stator coil of a submerged motor that is excellent in insulation performance and can be downsized even when used for a long period of time.

上記課題を達成するために、本発明の請求項1記載の発明は、液化ガス中で使用されるサブマージドモータのステータコイルにおいて、前記コイル形状を長方形形状にした同心巻き方式のコイルを用い、スロット絶縁物にU字状絶縁物とその内側にコイル直線部を覆う包み絶縁物を配し、前記包み絶縁物の長さを前記U字状絶縁物の長さより長くして、コイルエンド部に配するテーピング部を前記包み絶縁物と重ね、コイル素材にマイカ巻平角銅線、またはマイカ巻丸銅線を用い、前記コイル素材が前記包み絶縁物と前記テーピングにより完全に覆った構成としたことを特徴とする。 In order to achieve the above object, the invention according to claim 1 of the present invention uses a concentric winding coil in which the coil shape is a rectangular shape in a stator coil of a submerged motor used in liquefied gas , The slot insulator is provided with a U-shaped insulator and a wrapping insulator covering the coil linear portion inside thereof, and the length of the wrapping insulator is made longer than the length of the U-shaped insulator, The taping part to be placed is overlapped with the wrapping insulator, and the coil material is made of a mica-wound flat copper wire or a mica-wound round copper wire, and the coil material is completely covered by the wrapping insulator and the taping. It is characterized by.

本発明によれば、サブマージドモータの表面に経年的に汚れが付着したり、導電性液体中に浸されても、サブマージドモータの絶縁性能を低下させることがなく、さらに、小型化に優れ、低コストのサブマージドモータのステータコイルを提供することができる。   According to the present invention, even if the surface of the submerged motor is soiled over time or immersed in a conductive liquid, the insulation performance of the submerged motor is not deteriorated, and further excellent in miniaturization. A low-cost submerged motor stator coil can be provided.

以下、本発明を実施するための最良の形態について説明する。
図1は本発明の第1実施形態のサブマージドモータのステータコイルのステータ鉄心のスロット出口近傍の部分図であり、従来と同一構成部分には同一符号を付して説明する。
Hereinafter, the best mode for carrying out the present invention will be described.
FIG. 1 is a partial view of the vicinity of a slot outlet of a stator iron core of a stator coil of a submerged motor according to a first embodiment of the present invention.

図に示すように、ステータコイル1がスロット絶縁物またはU字状絶縁物6により絶縁され、ステータ鉄心2に納められている。包み絶縁物7は、スロット絶縁物6より長い寸法として、ステータ鉄心2の中でステータコイル1を覆っている。ステータ鉄心2からでたステータコイル1は、絶縁テープ8により前記包み絶縁物7と重ねてステータコイル1をテーピングで覆っている。つまり、本実施形態のステータコイル1は、包み絶縁物7と絶縁テープ8により完全に覆うことができる。   As shown in the figure, the stator coil 1 is insulated by a slot insulator or a U-shaped insulator 6 and accommodated in the stator core 2. The wrapping insulator 7 covers the stator coil 1 in the stator core 2 with a dimension longer than that of the slot insulator 6. The stator coil 1 from the stator iron core 2 is overlapped with the wrapping insulator 7 by an insulating tape 8 and covers the stator coil 1 with taping. That is, the stator coil 1 of the present embodiment can be completely covered with the wrapping insulator 7 and the insulating tape 8.

本実施形態によれば、ステータコイル1の素材を露出させることなく、絶縁物により覆うことができるので、十分な機密性を持った絶縁を行うことができる。   According to this embodiment, since it can cover with an insulator, without exposing the raw material of the stator coil 1, the insulation with sufficient confidentiality can be performed.

図2は本発明の第2の実施形態の外観図である。なお、本図は1極1相分のコイルのみを示している。
図に示すように、ステータコイル1は、長方形形状の同心巻き方式のコイルであり、ステータ鉄心2から離れた位置で外周側に成形されている。
FIG. 2 is an external view of a second embodiment of the present invention. In addition, this figure has shown only the coil for 1 pole 1 phase.
As shown in the figure, the stator coil 1 is a rectangular concentric coil, and is formed on the outer peripheral side at a position away from the stator core 2.

本実施形態では、ステータコイル1が長方形形状であり、ステータ鉄心2から離れた位置で外周側に成形されているので、隣接するコイルとの交差する部分を固定子鉄心2から離れた位置にすることができ、コイル納め作業を容易にすることができる。
したがって、小型化で作業性に優れたコイルを製造することができる。
In the present embodiment, the stator coil 1 has a rectangular shape and is formed on the outer peripheral side at a position away from the stator core 2, so that the portion intersecting with the adjacent coil is located away from the stator core 2. Therefore, the coil storage work can be facilitated.
Therefore, it is possible to manufacture a coil that is small in size and excellent in workability.

本発明の第3の実施形態を図1および図2を参照して説明する。
図に示すように、ステータコイル1は、長方形形状であり、ステータ鉄心2から離れた位置で外周側に成形されている。また、ステータコイル1は、スロット絶縁物6により絶縁され、ステータ鉄心2に納められている。ここで用いる包み絶縁物7は、スロット絶縁物6より長い寸法としており、ステータ鉄心2の中でステータコイル1を覆っている。ステータ鉄心2からでたステータコイル1は、絶縁テープ8により包み絶縁物7と重ねてステータコイル1をテーピングで覆っている。ステータコイル1の素材には、マイカ巻平角銅線、マイカ巻丸銅線を用い、コイルエンド部に包み絶縁物7と重ねて配する絶縁テープ8にはマイカテープを用いている。なお、ステータコイル1は、他の巻線方式であってもよい。
A third embodiment of the present invention will be described with reference to FIGS.
As shown in the figure, the stator coil 1 has a rectangular shape and is formed on the outer peripheral side at a position away from the stator core 2. The stator coil 1 is insulated by a slot insulator 6 and is housed in the stator core 2. The wrapping insulator 7 used here is longer than the slot insulator 6 and covers the stator coil 1 in the stator core 2. The stator coil 1 from the stator core 2 is wrapped with an insulating tape 8 and overlapped with the insulator 7 to cover the stator coil 1 with taping. The stator coil 1 is made of mica-wrapped flat copper wire or mica-winded copper wire, and mica tape is used for the insulating tape 8 that is wrapped around the coil end portion and placed over the insulator 7. The stator coil 1 may be another winding method.

本発明者等の実験によると、ステータコイル1にコイル納め作業におけるダメージを与えることなく、製造することができ、LNG等の極低温液体およびメタノール等の導電性液体に使用しても、絶縁性能が損なわれることがないことを確認することができた。   According to the experiments by the present inventors, the stator coil 1 can be manufactured without damaging the coil storage work, and even when used for a cryogenic liquid such as LNG and a conductive liquid such as methanol, the insulation performance It was confirmed that no damage was caused.

本発明の第1の実施形態のサブマージドモータのステータコイルのステータ鉄心のスロット出口近傍の部分図。The fragmentary view of the slot exit vicinity of the stator core of the stator coil of the submerged motor according to the first embodiment of the present invention. 本発明の第2の実施形態の外観図。The external view of the 2nd Embodiment of this invention. 従来のサブマージドモータのステータ鉄心の側面図。The side view of the stator core of the conventional submerged motor. 図3のステータ鉄心のスロット出口近傍の部分図。FIG. 4 is a partial view of the vicinity of a slot outlet of the stator iron core of FIG. 3.

符号の説明Explanation of symbols

1…ステータコイル、2…ステータ鉄心、3…コイルエンド部、4…ガラステープ、5…ケーブル、6…スロット絶縁物またはU字状絶縁物、7…包み絶縁物、8…絶縁テープ。

DESCRIPTION OF SYMBOLS 1 ... Stator coil, 2 ... Stator iron core, 3 ... Coil end part, 4 ... Glass tape, 5 ... Cable, 6 ... Slot insulator or U-shaped insulator, 7 ... Wrapping insulator, 8 ... Insulating tape.

Claims (1)

液化ガス中で使用されるサブマージドモータのステータコイルにおいて、前記コイル形状を長方形形状にした同心巻き方式のコイルを用い、スロット絶縁物にU字状絶縁物とその内側にコイル直線部を覆う包み絶縁物を配し、前記包み絶縁物の長さを前記U字状絶縁物の長さより長くして、コイルエンド部に配するテーピング部を前記包み絶縁物と重ね、コイル素材にマイカ巻平角銅線、またはマイカ巻丸銅線を用い、前記コイル素材が前記包み絶縁物と前記テーピングにより完全に覆った構成としたことを特徴とするサブマージドモータのステータコイル。 In a stator coil of a submerged motor used in liquefied gas, a concentrically wound coil in which the coil shape is a rectangular shape is used, and a U-shaped insulator is provided as a slot insulator and a coil linear portion is covered inside the slot insulator. An insulator is disposed, the length of the wrapped insulator is made longer than the length of the U-shaped insulator, and a taping portion disposed on the coil end portion is overlapped with the wrapped insulator, and the coil material is coated with mica-wrapped rectangular copper. A stator coil of a submerged motor using a wire or a mica-wound round copper wire, wherein the coil material is completely covered by the wrapping insulator and the taping.
JP2004126548A 2004-04-22 2004-04-22 Submerged motor stator coil Expired - Lifetime JP3951140B2 (en)

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