JPH04334946A - Bearing coil and sensor coil for high temperature magnetic bearing device - Google Patents
Bearing coil and sensor coil for high temperature magnetic bearing deviceInfo
- Publication number
- JPH04334946A JPH04334946A JP3132035A JP13203591A JPH04334946A JP H04334946 A JPH04334946 A JP H04334946A JP 3132035 A JP3132035 A JP 3132035A JP 13203591 A JP13203591 A JP 13203591A JP H04334946 A JPH04334946 A JP H04334946A
- Authority
- JP
- Japan
- Prior art keywords
- coil
- sensor
- bearing
- wire
- bearing device
- 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
- 239000003365 glass fiber Substances 0.000 claims abstract description 25
- 229920000592 inorganic polymer Polymers 0.000 claims abstract description 19
- 238000004804 winding Methods 0.000 claims abstract description 10
- 238000006073 displacement reaction Methods 0.000 claims description 24
- 239000011248 coating agent Substances 0.000 claims description 8
- 238000000576 coating method Methods 0.000 claims description 8
- 239000000696 magnetic material Substances 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 11
- 238000009413 insulation Methods 0.000 abstract description 7
- 239000000835 fiber Substances 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract 1
- 229920000642 polymer Polymers 0.000 abstract 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 10
- 239000000919 ceramic Substances 0.000 description 7
- 229910052759 nickel Inorganic materials 0.000 description 5
- 238000007747 plating Methods 0.000 description 5
- 238000005336 cracking Methods 0.000 description 4
- 239000004744 fabric Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000010304 firing Methods 0.000 description 3
- 238000009941 weaving Methods 0.000 description 3
- 229910000976 Electrical steel Inorganic materials 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229920000620 organic polymer Polymers 0.000 description 1
Landscapes
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、ターボ機械や工作機械
等の回転軸を磁気的に非接触で支持する磁気軸受装置に
用いる電磁石固定子の軸受コイル及び変位センサのセン
サコイルに関し、特に高温雰囲気中で使用する磁気軸受
装置に好適な高温用磁気軸受装置用軸受コイル及びセン
サコイルに関するものである。[Industrial Application Field] The present invention relates to a bearing coil of an electromagnetic stator and a sensor coil of a displacement sensor used in a magnetic bearing device that magnetically supports a rotating shaft of a turbo machine, a machine tool, etc. in a non-contact manner. The present invention relates to a bearing coil and a sensor coil for a high-temperature magnetic bearing device suitable for a magnetic bearing device used in an atmosphere.
【０００２】0002
【従来技術及び発明が解決しようとする課題】ターボ機
械や工作機械等の回転軸を磁気的に非接触で支持する磁
気軸受装置の良く知られた構造は、回転軸に固着した磁
性材料の回転子ヨークと、該回転子ヨークから微小間隙
を設けてケーシングに固定され且つ起磁力を発生させる
軸受用コイルを備えた電磁石固定子と、回転軸とケーシ
ング間の相対変位を測定するセンサコイルを有する変位
センサとを具備するものであり、該変位センサの出力を
基に前記回転子ヨークと前記電磁石固定子の間に作用す
る磁気力を制御して回転軸を磁気的に非接触で支持する
ようになっている。[Prior Art and Problems to be Solved by the Invention] The well-known structure of a magnetic bearing device that magnetically supports a rotating shaft of a turbo machine or a machine tool without contacting it is based on the rotation of a magnetic material fixed to the rotating shaft. It has a child yoke, an electromagnetic stator fixed to the casing with a minute gap from the rotor yoke and equipped with a bearing coil that generates magnetomotive force, and a sensor coil that measures the relative displacement between the rotating shaft and the casing. and a displacement sensor, and the magnetic force acting between the rotor yoke and the electromagnetic stator is controlled based on the output of the displacement sensor, so that the rotating shaft is magnetically supported in a non-contact manner. It has become.
【０００３】このような使用例は近年増加しているが、
特殊な使用環境では従来の構造ではまだ十分には使用で
きないことがある。例えば高温ガスを扱うブロワでは、
軸受回りの温度が２００℃を越え、４００℃、５００℃
に達することがあるのに対し、従来磁気軸受装置の電磁
石固定子に用いられる軸受用コイルや変位センサに用い
られるセンサコイルの線材は２００℃以上では、絶縁が
保てないのが殆どで、上記のような高温雰囲気で使用す
る回転機械の磁気軸受として使用することは不可能であ
った。[0003] Although such usage examples have increased in recent years,
In special usage environments, conventional structures may not be fully usable. For example, in a blower that handles high-temperature gas,
The temperature around the bearing exceeds 200℃, 400℃, 500℃
On the other hand, the wires of bearing coils used in the electromagnetic stator of conventional magnetic bearing devices and sensor coils used in displacement sensors cannot maintain insulation at temperatures above 200°C, and the above-mentioned It was impossible to use it as a magnetic bearing for rotating machinery used in high-temperature environments such as.
【０００４】上記のような高温雰囲気で使用できる磁気
軸受装置の軸受用コイル及びセンサコイルとして、セラ
ミック皮膜電線を用いることも考えられるが、上記のよ
うな厳しい温度環境下ではセラミック層による皮膜だけ
では、皮膜が破れたり剥がれたりするため十分な絶縁を
保つことは難しい。そこでこのような状況でも使用でき
る軸受コイルとしてはセラミック皮膜電線を縦糸に、ガ
ラスファイバを横糸に布のように緩く編んだ軸受用コイ
ルが提案されている。[0004] Although it is possible to use ceramic coated electric wires as the bearing coil and sensor coil of a magnetic bearing device that can be used in the above-mentioned high-temperature atmosphere, it is not possible to use ceramic coated wires alone in the above-mentioned severe temperature environment. , it is difficult to maintain sufficient insulation because the film may tear or peel off. Therefore, as a bearing coil that can be used in such a situation, a bearing coil in which a ceramic coated electric wire is used as a warp thread and a glass fiber is used as a weft thread that is loosely woven like cloth has been proposed.
【０００５】しかしながら単なるセラミック皮膜電線で
は可撓性に乏しく、銅線とセラミックとの膨張率の違い
によるセラミック層の割れ及び剥がれ防止ができないと
いう問題がある。更にセラミック電線にガラスファイバ
が直接巻かれているのでないため、それらを用いて任意
の形状及び巻数の軸受コイルを形成できないという問題
もあった。However, a simple ceramic coated electric wire has a problem in that it lacks flexibility and cannot prevent cracking and peeling of the ceramic layer due to the difference in expansion coefficient between the copper wire and the ceramic. Furthermore, since the glass fibers are not directly wound around the ceramic wires, there is also the problem that it is not possible to use them to form a bearing coil of any desired shape and number of turns.
【０００６】本発明は上述の点に鑑みてなされたもので
、上記問題点を除去し、高温雰囲気での使用に耐え得る
軸受コイル及びセンサコイルを具備する高温用磁気軸受
装置用軸受コイル及びセンサコイルを提供することを目
的とする。The present invention has been made in view of the above-mentioned points, and provides a bearing coil and sensor for a high-temperature magnetic bearing device, which eliminates the above-mentioned problems and is equipped with a bearing coil and a sensor coil that can withstand use in a high-temperature atmosphere. The purpose is to provide coils.
【０００７】[0007]
【課題を解決するための手段】上記問題点を解決するた
め本発明は、高温用磁気軸受装置の電磁石固定子の軸受
コイルとして、銅線等の導電性線材に可撓性を有する無
機ポリマー層と、耐熱ガラスファイバに層との絶縁被膜
を施してなる絶縁電線を巻いて形成したコイルを用いる
ことを特徴とする。[Means for Solving the Problems] In order to solve the above-mentioned problems, the present invention provides a flexible inorganic polymer layer on a conductive wire such as a copper wire as a bearing coil of an electromagnetic stator of a high-temperature magnetic bearing device. The present invention is characterized by using a coil formed by winding an insulated wire made of a heat-resistant glass fiber coated with a layer of insulation.
【０００８】また、高温用磁気軸受装置の変位センサの
センサコイルとして、導電性線材に可撓性を有する無機
ポリマー層と、耐熱ガラスファイバに層との絶縁被膜を
施した絶縁電線を巻いて形成したコイルを用いることを
特徴とする。[0008] Also, as a sensor coil for a displacement sensor of a high-temperature magnetic bearing device, an insulated wire is formed by winding an insulated wire in which a conductive wire is coated with a flexible inorganic polymer layer and a heat-resistant glass fiber is coated with an insulating coating. It is characterized by using a coil with a
【０００９】[0009]
【作用】上記の如く構成することにより無機ポリマー層
は、焼成後も可撓性を有しているので、導電性線と耐熱
ガラスファイバ層との熱膨張による歪みを吸収するので
、耐熱ガラスファイバ層の割れや剥がれを防止できる。
また、耐熱ガラスファイバは導電性線にそのまま巻かれ
ているので、従来と同様に巻くだけで所望の形状及び大
きさの軸受コイルが形成できる。従って、上記従来例の
ように縦糸と横糸から布を織るようにしてコイルを形成
する必要がなく、更に耐熱ガラスファイバ層が形成され
ることにより、絶縁性はさらに向上する。[Function] With the above structure, the inorganic polymer layer remains flexible even after firing, so it absorbs distortion due to thermal expansion between the conductive wire and the heat-resistant glass fiber layer, so the heat-resistant glass fiber layer It can prevent cracking and peeling of layers. In addition, since the heat-resistant glass fiber is wound as it is around the conductive wire, a bearing coil of a desired shape and size can be formed by simply winding it in the same manner as before. Therefore, there is no need to form a coil by weaving a cloth from warp and weft yarns as in the conventional example, and the insulation properties are further improved by forming a heat-resistant glass fiber layer.
【００１０】またセンサコイルは使用電圧が低いので、
ガラスファイバで被覆しなくともよく焼成後も可撓性を
有する無機ポリマー層の皮膜を施すだけの従来と同様に
巻くだけで所望の形状及び大きさのセンサコイルが形成
できる。[0010] Also, since the working voltage of the sensor coil is low,
A sensor coil of a desired shape and size can be formed by simply winding the sensor coil in the same manner as in the conventional method, which does not require coating with glass fiber and only requires a coating of an inorganic polymer layer that remains flexible after firing.
【００１１】[0011]
【実施例】以下、本発明の一実施例を図面に基づいて説
明する。図１（ａ），（ｂ）はそれぞれ高温用磁気軸受
装置用軸受コイルに用いる絶縁電線の断面形状を示す断
面図である。絶縁電線は図１（ａ）に示すように、ニッ
ケルメッキ層２を施した銅の線材１の表面に可撓性を有
する無機ポリマー層３を皮膜形成し、更にその上に耐熱
ガラスファイバ層４の皮膜を形成したものである。
また、他の絶縁電線は図１（ｂ）に示すようにニッケル
メッキ層２を施した銅の線材１の表面に可撓性を有する
無機ポリマー層３を皮膜形成し、更にその上に耐熱ガラ
スファイバ層４の皮膜を形成し、更にその上に可撓性を
有する無機ポリマー層５を皮膜形成したものである。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIGS. 1A and 1B are cross-sectional views showing the cross-sectional shape of an insulated wire used in a bearing coil for a high-temperature magnetic bearing device, respectively. As shown in FIG. 1(a), the insulated wire is made by forming a flexible inorganic polymer layer 3 on the surface of a copper wire 1 coated with a nickel plating layer 2, and then a heat-resistant glass fiber layer 4 on top of the inorganic polymer layer 3. A film of
In addition, other insulated wires are made by forming a flexible inorganic polymer layer 3 on the surface of a copper wire 1 coated with a nickel plating layer 2, as shown in FIG. A film of the fiber layer 4 is formed, and a flexible inorganic polymer layer 5 is further formed thereon.
【００１２】なお、ここで線材１としては銅線に限るも
のではなく、例えばアルミニュウム線等、導電性の優れ
た金属或いはその合金等の導電性材料からなる線材であ
ればよい。Note that the wire 1 is not limited to a copper wire, but may be any wire made of a conductive material such as a highly conductive metal or an alloy thereof, such as an aluminum wire.
【００１３】図２は本発明に係る高温用磁気軸受装置用
電磁石固定子の構造を示す斜視図である。図示するよう
に、珪素鋼板を積層してなる環状の磁気受ヨーク６の磁
極用凸部７の外周に前記図１（ａ），（ｂ）に示す断面
形状の絶縁電線を巻いて軸受用コイル８を形成している
。FIG. 2 is a perspective view showing the structure of an electromagnetic stator for a high-temperature magnetic bearing device according to the present invention. As shown in the figure, an insulated wire having the cross-sectional shape shown in FIGS. 1(a) and 1(b) is wound around the outer periphery of the magnetic pole protrusion 7 of an annular magnetic receiving yoke 6 made of laminated silicon steel plates to form a bearing coil. 8 is formed.
【００１４】磁気軸受装置用軸受コイルを上記構造とす
ることにより、無機ポリマー層３，５は、高温で焼成後
も可撓性を有しているので、銅の線材１と耐熱ガラスフ
ァイバ層４との熱膨張の差による歪みを吸収するので、
耐熱ガラスファイバ層４の割れや剥がれを防止でき、高
温雰囲気中で使用する高温磁気軸受用軸受コイルとして
好適なものとなる。また、耐熱ガラスファイバ層４はニ
ッケルメッキ層２を施した銅線材１の上に形成され無機
ポリマー層３上にそのまま巻かれているので、従来と同
様に巻くだけで所望の形状及び大きさの軸受コイル８が
形成できる。従って、上記従来例のように縦糸と横糸か
ら布を織るようにしてコイルを形成する必要がない。更
に耐熱ガラスファイバ層４が形成されることにより、絶
縁性はさらに向上する。By making the bearing coil for a magnetic bearing device have the above structure, the inorganic polymer layers 3 and 5 have flexibility even after being fired at high temperatures, so that the copper wire 1 and the heat-resistant glass fiber layer 4 It absorbs the distortion due to the difference in thermal expansion between
The heat-resistant glass fiber layer 4 can be prevented from cracking or peeling, and is suitable as a bearing coil for a high-temperature magnetic bearing used in a high-temperature atmosphere. In addition, since the heat-resistant glass fiber layer 4 is formed on the copper wire 1 coated with the nickel plating layer 2 and wound as it is on the inorganic polymer layer 3, the desired shape and size can be obtained by simply winding it in the same way as before. A bearing coil 8 can be formed. Therefore, there is no need to form a coil by weaving a cloth from warp and weft yarns as in the conventional example. Further, by forming the heat-resistant glass fiber layer 4, the insulation properties are further improved.
【００１５】図３は本発明に係る高温用磁気軸受装置の
変位センサのセンサコイルに用いる絶縁電線の断面形状
を示す断面図である。図示するように、絶縁電線の断面
形状はニッケルメッキ層２を施した銅の線材１の表面に
可撓性を有する無機ポリマー層３を皮膜形成し、更にそ
の上に有機ポリマー層６の皮膜を形成したものである。
なお、線材１としては銅線に限るものではなく、例
えばアルミニュウム線等、導電性の優れた金属或いはそ
の合金等の導電性材料からなる線材であればよい。FIG. 3 is a cross-sectional view showing the cross-sectional shape of an insulated wire used in a sensor coil of a displacement sensor of a high-temperature magnetic bearing device according to the present invention. As shown in the figure, the cross-sectional shape of the insulated wire is obtained by forming a flexible inorganic polymer layer 3 on the surface of a copper wire 1 coated with a nickel plating layer 2, and then coating an organic polymer layer 6 on top of it. It was formed. Note that the wire 1 is not limited to a copper wire, and may be any wire made of a conductive material such as a highly conductive metal or an alloy thereof, such as an aluminum wire.
【００１６】上記絶縁電線は図１（ａ），（ｂ）に示す
断面形状の軸受コイルの絶縁電線と同様可撓性を有する
。ただ耐熱ガラスファイバ層４を有しない点で耐電圧性
において劣るが、センサコイルは使用電圧が低いので、
ガラスファイバで被覆しなくともよい。The insulated wire has flexibility similar to the insulated wire of the bearing coil having the cross-sectional shape shown in FIGS. 1(a) and 1(b). However, it is inferior in voltage resistance because it does not have the heat-resistant glass fiber layer 4, but since the sensor coil has a low operating voltage,
It does not need to be coated with glass fiber.
【００１７】図４は本発明に係る高温用磁気軸受装置用
変位センサのセンサコイルを示す斜視図である。図示す
るように、センサコイル１０は、カップ状のセンサ用コ
アの中央部に形成された凸部の外周に、図３に示す断面
形状のセンサコイル用の絶縁電線を巻いた形状である。FIG. 4 is a perspective view showing a sensor coil of a displacement sensor for a high-temperature magnetic bearing device according to the present invention. As shown in the figure, the sensor coil 10 has a shape in which an insulated wire for a sensor coil having a cross-sectional shape shown in FIG. 3 is wound around the outer periphery of a convex portion formed at the center of a cup-shaped sensor core.
【００１８】図５は上記構成の軸受コイル及びセンサコ
イルを用いる高温用磁気軸受の構造を示す図である。図
示するように、高周波モータ２１の回転子軸２２が２個
のラジアル磁気軸受２３，２４と１個のスラスト軸気受
２５により磁気的に非接触で回転自在に支持されるよう
になっている。ラジアル磁気軸受２３，２４の磁気力は
回転子軸２２とケーシング２６間のラジアル方向の相対
変位を測定するラジアル変位センサ２７，２８の出力に
基づいて制御されるようになっており、スラスト軸気受
２５の磁気力は回転子軸２２とケーシング２６間のスラ
スト方向の相対変位を測定するスラスト変位センサ２９
の出力に基づいて制御されるようになっている。FIG. 5 is a diagram showing the structure of a high-temperature magnetic bearing using the bearing coil and sensor coil configured as described above. As shown in the figure, a rotor shaft 22 of a high-frequency motor 21 is rotatably supported by two radial magnetic bearings 23 and 24 and one thrust bearing 25 in a non-magnetic manner. . The magnetic force of the radial magnetic bearings 23 and 24 is controlled based on the outputs of radial displacement sensors 27 and 28 that measure the relative displacement in the radial direction between the rotor shaft 22 and the casing 26, and the thrust shaft The magnetic force of the receiver 25 is detected by a thrust displacement sensor 29 that measures the relative displacement between the rotor shaft 22 and the casing 26 in the thrust direction.
It is designed to be controlled based on the output of
【００１９】ラジアル磁気軸受２３，２４はそれぞれ回
転子軸２２に固定された珪素鋼板を積層してなる磁性材
料からなる回転子ヨーク２３ａ，２４ａと、該回転子ヨ
ーク２３ａ，２４ａから微小間隙を設けてケーシング２
６に固定され且つ起磁力を発生させる軸受コイル２３ｂ
，２４ｂを備えた電磁石固定子２３ｃ，２４ｃからなる
。またスラスト磁気軸受２５回転子軸２２に固定された
磁性材料からなる回転子ヨーク２５ａと該回転子ヨーク
２５ａから微小間隙を設けてケーシング２６に固定され
且つ起磁力を発生させる軸受用コイル２５ｂ，２５ｂを
備えた電磁石固定子２５ｃ，２５ｃからなる。The radial magnetic bearings 23 and 24 have rotor yokes 23a and 24a made of a magnetic material made of laminated silicon steel plates fixed to the rotor shaft 22, respectively, and minute gaps are provided from the rotor yokes 23a and 24a. casing 2
Bearing coil 23b fixed to 6 and generating magnetomotive force
, 24b, and electromagnetic stators 23c and 24c. Further, a rotor yoke 25a made of a magnetic material is fixed to the thrust magnetic bearing 25 and the rotor shaft 22, and bearing coils 25b, 25b are fixed to the casing 26 with a minute gap from the rotor yoke 25a and generate magnetomotive force. It consists of electromagnetic stators 25c and 25c equipped with.
【００２０】また、ラジアル変位センサ２７，２８はそ
れぞれセンサ用コア２７ｂ，２８ｂとセンサコイル２７
ａ，２８ａからなり、またスラスト変位センサ２９はセ
ンサ用コア２９ｂとセンサコイル２９ａからなる。The radial displacement sensors 27 and 28 also include sensor cores 27b and 28b and a sensor coil 27, respectively.
The thrust displacement sensor 29 consists of a sensor core 29b and a sensor coil 29a.
【００２１】上記構造の高温用磁気軸受装置において、
ラジアル磁気軸受２３，２４の軸受コイル２３ｂ，２４
ｂに図２に示す軸受コイル８を用い、スラスト磁気受２
５の軸受コイル２５ｂにも形状は異なるが、図２に示す
軸受コイル８と略同じものを用いる。また、ラジアル変
位センサ２７，２８のセンサコイル２７ａ，２８ａに図
４に示すセンサコイル１０を用いる。またスラスト変位
センサ２９のセンサコイル２９ａにも図４に示すセンサ
コイル１０を用いる。これにより、上記構造の磁気軸受
装置は高温雰囲気中で使用するのに好適な磁気軸受装置
となる。[0021] In the high-temperature magnetic bearing device having the above structure,
Bearing coils 23b, 24 of radial magnetic bearings 23, 24
Using the bearing coil 8 shown in FIG. 2 in b, the thrust magnetic bearing 2
The bearing coil 25b of No. 5 is also substantially the same as the bearing coil 8 shown in FIG. 2, although the shape is different. Furthermore, the sensor coil 10 shown in FIG. 4 is used as the sensor coils 27a, 28a of the radial displacement sensors 27, 28. Further, the sensor coil 10 shown in FIG. 4 is also used for the sensor coil 29a of the thrust displacement sensor 29. As a result, the magnetic bearing device having the above structure becomes a magnetic bearing device suitable for use in a high temperature atmosphere.
【００２２】[0022]
【発明の効果】以上説明したように本発明によれば、下
記のような優れた効果が得られる。
（１）軸受コイルに用いる絶縁電線の皮膜に無機ポリマ
ー層を用いるので、該無機ポリマー層は焼成後も可撓性
を有するから、導電性線と耐熱ガラスファイバ層との熱
膨張による歪みを吸収する作用を奏し、耐熱ガラスファ
イバ層の割れや剥がれを防止できる。[Effects of the Invention] As explained above, according to the present invention, the following excellent effects can be obtained. (1) Since an inorganic polymer layer is used for the coating of the insulated wire used in the bearing coil, the inorganic polymer layer remains flexible even after firing, so it absorbs distortion due to thermal expansion between the conductive wire and the heat-resistant glass fiber layer. This has the effect of preventing cracking and peeling of the heat-resistant glass fiber layer.
【００２３】（２）また、耐熱ガラスファイバ導電性線
にそのまま巻かれているので、従来と同様に巻くだけで
所望の形状及び大きさの軸受コイルが形成できる。従っ
て、従来のように縦糸と横糸から布を織るようにしてコ
イルを形成する必要がなく、更に耐熱ガラスファイバ層
が形成されることにより、絶縁性はさらに向上する。(2) Furthermore, since the heat-resistant glass fiber conductive wire is wound as is, a bearing coil of a desired shape and size can be formed by simply winding it in the same manner as before. Therefore, it is not necessary to form a coil by weaving a cloth from warp and weft yarns as in the conventional method, and the insulation properties are further improved by forming a heat-resistant glass fiber layer.
【００２４】（３）また、センサコイルに用いる絶縁電
線の皮膜に無機ポリマー層を用いるので、上記と同様に
耐熱性に優れ所望の形状及び大きさのセンサコイルが形
成できる。なお、センサコイルに用いられる絶縁電線に
は耐熱ガラスファイバの被覆はないが、センサコイルの
使用電圧が低いので、ガラスファイバで被覆しなくとも
よい。(3) Furthermore, since an inorganic polymer layer is used for the coating of the insulated wire used in the sensor coil, it is possible to form a sensor coil with excellent heat resistance and a desired shape and size, similarly to the above. Note that although the insulated wire used in the sensor coil is not coated with heat-resistant glass fiber, since the working voltage of the sensor coil is low, it is not necessary to cover it with glass fiber.
【図１】図１（ａ），（ｂ）はそれぞれ高温用磁気軸受
装置用軸受コイルに用いる絶縁電線の断面形状を示す断
面図である。FIGS. 1A and 1B are cross-sectional views showing the cross-sectional shape of an insulated wire used in a bearing coil for a high-temperature magnetic bearing device, respectively.
【図２】本発明に係る高温用磁気軸受装置用電磁石固定
子構造を示す斜視図である。FIG. 2 is a perspective view showing an electromagnetic stator structure for a high-temperature magnetic bearing device according to the present invention.
【図３】本発明に係る高温用磁気軸受装置の変位センサ
のセンサコイルに用いる絶縁電線の断面形状を示す断面
図である。FIG. 3 is a cross-sectional view showing a cross-sectional shape of an insulated wire used in a sensor coil of a displacement sensor of a high-temperature magnetic bearing device according to the present invention.
【図４】本発明に係る高温用磁気軸受装置用変位センサ
を示す斜視図である。FIG. 4 is a perspective view showing a displacement sensor for a high-temperature magnetic bearing device according to the present invention.
【図５】本発明の軸受コイル及びセンサコイルを用いる
高温用磁気軸受の構造を示す図である。FIG. 5 is a diagram showing the structure of a high-temperature magnetic bearing using the bearing coil and sensor coil of the present invention.
１ 銅の線材
２ ニッケルメッキ層
３ 無機ポリマー層
４ 耐熱ガラスファバ層５
無機ポリマー層
６ 磁気受ヨーク
７ 磁極用凸部
８ 軸受コイル
９ センサ用コア
１０ センサコイル1 Copper wire 2 Nickel plating layer 3 Inorganic polymer layer 4 Heat-resistant glass fiber layer 5
Inorganic polymer layer 6 Magnetic receiving yoke 7 Convex portion for magnetic pole 8 Bearing coil 9 Sensor core 10 Sensor coil
Claims (2)
と、該回転子ヨークから微小間隙を設けてケーシングに
固定され且つ起磁力を発生させる軸受コイルを備えた電
磁石固定子と、回転軸とケーシング間の相対変位を測定
するセンサコイルを有する変位センサとを具備し、該変
位センサの出力を基に前記回転子ヨークと前記電磁石固
定子の間に作用する磁気力を制御して回転軸を磁気的に
非接触で支持する磁気軸受装置の前記軸受コイルであっ
て、該軸受用コイルは導電性線材に可撓性を有する無機
ポリマー層と、耐熱ガラスファイバに層との絶縁被膜を
施してなる絶縁電線を巻いて形成したものであることを
特徴とする高温用磁気軸受装置用軸受コイル。1. A rotor yoke made of a magnetic material fixed to a rotating shaft, an electromagnetic stator having a bearing coil fixed to a casing with a minute gap from the rotor yoke and generating a magnetomotive force, and a rotating shaft. and a displacement sensor having a sensor coil for measuring relative displacement between the casing and the casing, and based on the output of the displacement sensor, the magnetic force acting between the rotor yoke and the electromagnetic stator is controlled to control the rotation axis. The bearing coil of the magnetic bearing device supports magnetically in a non-contact manner, the bearing coil having an insulating coating of a flexible inorganic polymer layer on a conductive wire and a layer on a heat-resistant glass fiber. 1. A bearing coil for a high-temperature magnetic bearing device, characterized in that it is formed by winding an insulated wire made of
と、該回転子ヨークから微小間隙を設けてケーシングに
固定され且つ起磁力を発生させる軸受コイルを備えた電
磁石固定子と、回転軸とケーシング間の相対変位を測定
するセンサコイルを有する変位センサとを具備し、該変
位センサの出力を基に前記回転子ヨークと前記電磁石固
定子の間に作用する磁気力を制御して回転軸を磁気的に
非接触で支持する磁気軸受装置の前記センサコイルであ
って、該センサコイルは導電性線材に可撓性を有する無
機ポリマー層の絶縁被膜を施した絶縁電線を巻いて形成
したものであることを特徴とする請求項１記載の高温用
磁気軸受装置用センサコイル。2. A rotor yoke made of a magnetic material fixed to a rotating shaft, an electromagnetic stator having a bearing coil fixed to a casing with a small gap from the rotor yoke and generating a magnetomotive force, and a rotating shaft. and a displacement sensor having a sensor coil for measuring relative displacement between the casing and the casing, and based on the output of the displacement sensor, the magnetic force acting between the rotor yoke and the electromagnetic stator is controlled to control the rotation axis. The sensor coil of the magnetic bearing device that magnetically supports the sensor in a non-contact manner, wherein the sensor coil is formed by winding an insulated wire in which a conductive wire is coated with an insulating coating of a flexible inorganic polymer layer. The sensor coil for a high-temperature magnetic bearing device according to claim 1, characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3132035A JPH04334946A (en) | 1991-05-08 | 1991-05-08 | Bearing coil and sensor coil for high temperature magnetic bearing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3132035A JPH04334946A (en) | 1991-05-08 | 1991-05-08 | Bearing coil and sensor coil for high temperature magnetic bearing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04334946A true JPH04334946A (en) | 1992-11-24 |
Family
ID=15071982
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3132035A Pending JPH04334946A (en) | 1991-05-08 | 1991-05-08 | Bearing coil and sensor coil for high temperature magnetic bearing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04334946A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996025750A1 (en) * | 1995-02-14 | 1996-08-22 | Sundstrand Corporation | High temperature electrical insulation system |
| EP2410533A1 (en) * | 2010-07-23 | 2012-01-25 | Societe De Mecanique Magnetique | Watertight electrical connection for rotating machine |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63272013A (en) * | 1987-04-30 | 1988-11-09 | Showa Electric Wire & Cable Co Ltd | Heat-resistant electrically insulated coil and manufacture thereof |
| JPS63318718A (en) * | 1987-06-22 | 1988-12-27 | Toshiba Corp | Heat-resistant insulated coil |
-
1991
- 1991-05-08 JP JP3132035A patent/JPH04334946A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63272013A (en) * | 1987-04-30 | 1988-11-09 | Showa Electric Wire & Cable Co Ltd | Heat-resistant electrically insulated coil and manufacture thereof |
| JPS63318718A (en) * | 1987-06-22 | 1988-12-27 | Toshiba Corp | Heat-resistant insulated coil |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996025750A1 (en) * | 1995-02-14 | 1996-08-22 | Sundstrand Corporation | High temperature electrical insulation system |
| EP2410533A1 (en) * | 2010-07-23 | 2012-01-25 | Societe De Mecanique Magnetique | Watertight electrical connection for rotating machine |
| FR2963154A1 (en) * | 2010-07-23 | 2012-01-27 | Mecanique Magnetique Sa | ELECTRIC APPARATUS WITH SEALED CONNECTIONS AND METHOD OF MANUFACTURE |
| US8927864B2 (en) | 2010-07-23 | 2015-01-06 | Skf Magnetic Mechatronics | Electrical appliance with leaktight connections, and a method of fabrication |
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