JPH0817541B2 - Permanent magnet type rotating electric machine - Google Patents
Permanent magnet type rotating electric machineInfo
- Publication number
- JPH0817541B2 JPH0817541B2 JP5027215A JP2721593A JPH0817541B2 JP H0817541 B2 JPH0817541 B2 JP H0817541B2 JP 5027215 A JP5027215 A JP 5027215A JP 2721593 A JP2721593 A JP 2721593A JP H0817541 B2 JPH0817541 B2 JP H0817541B2
- Authority
- JP
- Japan
- Prior art keywords
- permanent magnet
- electric machine
- magnet type
- rotor
- ring
- 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 - Fee Related
Links
Description
【０００１】[0001]
【産業上の利用分野】この発明は、例えば石油掘削装置
のドリルパイプ内に収納される発電機に関し、特に回転
子に永久磁石からなる回転子磁極を有した永久磁石形回
転電機に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a generator housed in a drill pipe of an oil rig, for example, and more particularly to a permanent magnet type rotating electric machine having a rotor magnetic pole composed of a permanent magnet in a rotor. .
【０００２】[0002]
【従来の技術】石油掘削装置のドリルパイプにあって
は、下端にボーリング用切刃が接続されている。そし
て、切刃の近くには地層の状態等を検出するセンサを取
付けており、センサからの各種情報を地上へ伝送するよ
うにしている。従って、切刃近くのドリルパイプには、
センサ及び電子機器に給電する発電機が収納される。図
４は従来のこの種の発電機に適用される永久磁石形発電
機を示す縦断面図であり、図５は図４のＭ−Ｍ線におけ
る断面図である。図において、１はフレーム、２はこの
フレームに固定される固定子積層コア、４はこの固定子
積層コアのスロット１２に挿入される電機子コイル、５
は後述する回転子を支承するベアリング、６は封入油、
８は永久磁石からなる磁極（回転子磁極）９を有した回
転子、１０は軸シール、１１は均圧ベローズ、１２はコ
イルスロット（１個のみ示す）、δ1 は電気的空隙であ
る。2. Description of the Related Art In a drill pipe of an oil drilling rig, a cutting edge for boring is connected to the lower end. A sensor for detecting the condition of the stratum is attached near the cutting edge, and various information from the sensor is transmitted to the ground. Therefore, for the drill pipe near the cutting edge,
A generator that supplies power to the sensor and the electronic device is housed. FIG. 4 is a vertical sectional view showing a conventional permanent magnet type generator applied to this type of generator, and FIG. 5 is a sectional view taken along line MM in FIG. In the figure, 1 is a frame, 2 is a stator laminated core fixed to this frame, 4 is an armature coil inserted in a slot 12 of this stator laminated core, 5
Is a bearing that supports the rotor described later, 6 is filled oil,
Reference numeral 8 is a rotor having magnetic poles (rotor magnetic poles) 9 made of permanent magnets, 10 is a shaft seal, 11 is a pressure equalizing bellows, 12 is a coil slot (only one is shown), and δ 1 is an electric gap.
【０００３】従来の発電機は以上のように構成され、坑
底の高圧力下に於て、均圧ベローズ１１および封入油６
の作用により、圧力バランスが保持されている。また回
転子８にはボーリング泥水（マッド）で駆動されるター
ビンが装着され、該タービンにより回転子を駆動させる
ことにより電力を得ることが出来る。The conventional generator is constructed as described above, and the pressure equalizing bellows 11 and the enclosed oil 6 are provided under the high pressure at the bottom of the mine.
By the action of, the pressure balance is maintained. Further, the rotor 8 is equipped with a turbine driven by boring mud, and electric power can be obtained by driving the rotor by the turbine.
【０００４】この発電機を石油、天然ガス等の井戸を掘
削するボーリング装置に適用する場合について説明をす
る。図６にボーリング装置用タービン発電装置を示す。
この発電装置は特願平２−１２７７２２号公報にて示さ
れている。図において、２０は図４に示した発電機、２
１はタービン静翼、２２はタービン動翼であり、発電機
の回転子８に連結されている。１３は坑底機器収納管、
１７は発電機２０により発電した電力の供給を受ける電
子機器である。また１６は地上のポンプ（図示せず）か
ら送られるボーリング泥水（マッド）を通すタービン流
路である。さらに１５は収納管の締結ねじであり、坑底
機器収納管１３を上部接続管１４に結合する。２３はタ
ービン静翼ボス、２４はタービン動翼ボスである。A case where this generator is applied to a boring device for excavating a well such as oil and natural gas will be described. FIG. 6 shows a turbine generator for boring equipment.
This power generator is disclosed in Japanese Patent Application No. 2-127722. In the figure, 20 is the generator shown in FIG.
Reference numeral 1 is a turbine stationary blade, and 22 is a turbine moving blade, which is connected to the rotor 8 of the generator. 13 is a mine bottom equipment storage pipe,
Reference numeral 17 denotes an electronic device that receives the power generated by the generator 20. Reference numeral 16 is a turbine flow path through which boring mud (mud) sent from a pump (not shown) on the ground is passed. Further, 15 is a fastening screw of the storage pipe, which connects the mine bottom equipment storage pipe 13 to the upper connection pipe 14. Reference numeral 23 is a turbine stationary blade boss, and 24 is a turbine moving blade boss.
【０００５】ボーリング装置において、坑底機器収納管
１３と上部接続管１４はドリルパイプとも言われ、坑底
機器収納管１３の下端にボーリング用切刃（ビット）が
付けられ、上部接続管１４の上端は地上において回転駆
動装置に接続され、ドリルパイプ（坑底機器収納管１
３、及び上部接続管１４を総称してドリルパイプと称
す。）１３と１４が一体となって低速回転し切刃で地層
を掘削しながら掘り進んでゆく。ドリルパイプ１４は深
さを増すごとに同様な管が接続され、全長が長くなる。
掘削時は掘屑を地上へ運び出すためのボーリング泥水
（マッド）がドリルパイプ１３，１４内を矢印Ｃのよう
に地上から下方へ送られる。ボーリングの際は、地層の
状態、その他の坑底の状況を地上で知りたいので、切刃
の近くに検出センサを設け、センサからの信号を地上の
受信装置へ伝送するように構成されており、その情報に
よって掘削の制御が行なわれる。本発明に係る装置はこ
の情報を信号伝送するための電子機器等に電力を供給す
るためのもので、電子機器１７には検出センサや信号を
伝送するための変換装置や送信装置が設けられている。In the boring device, the mine bottom equipment storage pipe 13 and the upper connection pipe 14 are also called drill pipes, and a cutting edge (bit) for boring is attached to the lower end of the mine bottom equipment storage pipe 13 to connect the upper connection pipe 14 with the cutting pipe. The upper end is connected to the rotary drive on the ground, and the drill pipe (bottom equipment storage pipe 1
3 and the upper connecting pipe 14 are collectively referred to as a drill pipe. ) 13 and 14 are united and rotate at a low speed to dig while excavating the stratum with a cutting blade. A similar pipe is connected to the drill pipe 14 as the depth increases, and the total length becomes longer.
At the time of excavation, boring mud (mud) for carrying the cutting waste to the ground is sent downward from the ground in the drill pipes 13 and 14 as indicated by arrow C. At the time of boring, we want to know the condition of the stratum and other conditions of the bottom of the pit on the ground, so we installed a detection sensor near the cutting edge and configured to transmit the signal from the sensor to the receiver on the ground. The excavation is controlled by the information. The device according to the present invention is for supplying electric power to an electronic device or the like for transmitting this information as a signal, and the electronic device 17 is provided with a detection sensor, a conversion device for transmitting the signal, and a transmitting device. There is.
【０００６】次に動作について説明する。ボーリング泥
水は地上からポンプによってドリルパイプ１３，１４の
中を下方（矢印Ｃ）へ流れ、タービン静翼２１によって
旋回流となったのち、タービン動翼２２に対して回転力
を発生させ、これに直結された発電機２０を駆動して電
力を得、電子機器１７を作動させる。Next, the operation will be described. The boring mud flows downward (arrow C) through the drill pipes 13 and 14 from the ground by a pump, becomes a swirling flow by the turbine stationary blade 21, and then generates a rotational force to the turbine rotor blade 22. The directly connected generator 20 is driven to obtain electric power to operate the electronic device 17.
【０００７】[0007]
【発明が解決しようとする課題】従来の永久磁石形回転
電機は以上のように構成され、坑底機器収納管１３に収
納された状態で運転されるため、掘削中の激しい振動
や、衝撃が発電機２０に伝搬する。又、掘削深度が深く
なると、ドリルパイプ１３，１４が湾曲する。しかる
に、発電機はその特性上、電気的空隙δ1 を小さくして
おく必要があり、上記振動、衝撃、あるいは湾曲を生じ
たりすると、固定子積層コア２と磁極９とが接触するこ
とがある。特に、磁極９が永久磁石で構成しているた
め、通常の回転子に比べて、接触時はある距離まで近づ
いた時に磁気吸引力が働いて衝撃的に接触することにな
るなどの問題点があった。Since the conventional permanent magnet type rotating electric machine is constructed as described above and is operated in the state where it is housed in the downhole equipment housing pipe 13, it is not subject to severe vibration or impact during excavation. Propagate to the generator 20. Further, when the excavation depth becomes deep, the drill pipes 13 and 14 bend. However, due to the characteristics of the generator, it is necessary to keep the electrical gap δ 1 small, and when the above vibration, shock, or bending occurs, the stator laminated core 2 and the magnetic pole 9 may come into contact with each other. . In particular, since the magnetic pole 9 is composed of a permanent magnet, there is a problem that a magnetic attraction force is exerted when a contact is approached to a certain distance, resulting in a shocking contact, as compared with an ordinary rotor. there were.
【０００８】この発明は、上記のような問題点を解消す
るためになされたもので、振動や衝撃の伝播による機器
の損傷がない永久磁石形回転電機を得ることを目的とす
る。The present invention has been made in order to solve the above problems, and an object thereof is to obtain a permanent magnet type rotating electric machine in which the equipment is not damaged by the propagation of vibration or shock.
【０００９】[0009]
【課題を解決するための手段】この発明に係る永久磁石
形回転電機は、固定子積層コアの内周に軟質材料からな
る第１のリング状接触保護板を装着すると共に、その第
１のリング状接触保護板に所定の空隙をあけて対向配置
され、且つ回転子磁極の外周に軟質材料からなる第２の
リング状接触保護板を装着したものである。A permanent magnet type rotary electric machine according to the present invention comprises a stator laminated core having an inner circumference made of a soft material.
The first ring-shaped contact protection plate
1 ring-shaped contact protection plate facing each other with a predetermined gap
And a second member made of a soft material on the outer circumference of the rotor magnetic pole .
It is equipped with a ring-shaped contact protection plate .
【００１０】[0010]
【作用】この発明における永久磁石形回転電機は、振
動、衝撃および湾曲などにより、固定子積層コアと回転
子磁極が接触しようとしても、対向して挿入した接触保
護板が先に接触し、軸受の役目をするので、固定子積層
コアと回転子磁極の接触を防ぐ。In the permanent magnet type rotary electric machine according to the present invention, even if the stator laminated core and the rotor magnetic poles come into contact with each other due to vibration, impact, bending, etc., the contact protection plates inserted so as to face each other first come into contact with each other, and It prevents the contact between the stator laminated core and the rotor magnetic pole.
【００１１】[0011]
【実施例】実施例１．以下、この発明の一実施例を図に
ついて説明する。図１はこの発明の一実施例による永久
磁石形発電機を示す縦断面図、図２は図１の接触保護板
３ａ，７ｂの拡大図、図３は図２のＬ−Ｌ線における断
面図である。なお、従来技術である図４〜図６に示した
ものと同一の構成部分には同一符号を付してその説明を
省略する。EXAMPLES Example 1. An embodiment of the present invention will be described below with reference to the drawings. 1 is a longitudinal sectional view showing a permanent magnet generator according to an embodiment of the present invention, FIG. 2 is an enlarged view of the contact protection plates 3a and 7b of FIG. 1, and FIG. 3 is a sectional view taken along line LL of FIG. Is. It should be noted that the same components as those shown in FIGS. 4 to 6 which are prior arts are designated by the same reference numerals and the description thereof will be omitted.
【００１２】各図において、３ａと７ｂは共に接触保護
板（第１および第２のリング状接触保護板）、δ1 は電
機的空隙、δ2 は接触保護空隙である。接触保護板３ａ
はコイルスロット１２を利用し、固定子積層コア２の内
周中央にリング状に装着され、接触保護板７ｂは接触保
護板３ａに対向して、回転子８の磁極（回転子磁極）９
の外周中央に円筒形で装着されている。材質は、軸受材
として適当な銅などの軟質材料を使用する。In each figure, 3a and 7b are contact protection plates (first and second ring-shaped contact protection plates) , δ 1 is an electrical space, and δ 2 is a contact protection space. Contact protection plate 3a
Is attached to the center of the inner circumference of the stator laminated core 2 in a ring shape by using the coil slot 12, and the contact protection plate 7b faces the contact protection plate 3a, and the magnetic pole (rotor magnetic pole) 9 of the rotor 8 is provided.
It is mounted in a cylindrical shape at the center of the outer periphery of. The material used is a soft material suitable for the bearing material, such as copper.
【００１３】即ち、振動、衝撃、湾曲などにより、固定
子積層コア２と磁極９が接触しようとする状態になった
場合、接触保護板３ａ，７ｂが先に接触し、固定子積層
コア２と磁極９とが接触するのを防止できる。また封入
油６の助けにより、接触保護板３ａ，７ｂは軸受の役目
をする。なお、電気的空隙δ1 と接触保護空隙δ2 はδ
1 ＞δ2 の関係にあることは言うまでもない。That is, when the stator laminated core 2 and the magnetic pole 9 come into contact with each other due to vibration, shock, bending, etc., the contact protection plates 3a and 7b come into contact with each other first, and the stator laminated core 2 and The contact with the magnetic pole 9 can be prevented. Further, with the help of the enclosed oil 6, the contact protection plates 3a, 7b serve as bearings. The electrical gap δ 1 and the contact protection gap δ 2 are δ
It goes without saying that there is a relation of 1 > δ 2 .
【００１４】[0014]
【発明の効果】以上のように、この発明によれば、固定
子積層コアの内周に軟質材料からなる第１のリング状接
触保護板を装着すると共に、その第１のリング状接触保
護板に所定の空隙をあけて対向配置され、且つ回転子磁
極の外周に軟質材料からなる第２のリング状接触保護板
を装着するように構成したので、固定子積層コアと回転
子磁極の接触を防止し、これらの損傷を防ぐことができ
る。また、各リング状接触保護板は軟質材料からなり所
定の空隙をあけて対向して装着されているので、通常は
各リング状接触保護板間に摩擦が生じることはなく、接
触時においても摩擦は少なく軸受けを設けた場合に近い
働きをすることができる。また、直に軸受けを設けたも
のに比較して、電気および磁気的な損失が生じないのに
加えて、製造を容易にすることができる効果がある。 As described above, according to the present invention, the first ring-shaped contact made of a soft material is formed on the inner circumference of the stator laminated core.
Attach the touch protection plate and keep the first ring-shaped contact
A second ring-shaped contact protection plate which is arranged opposite to the protection plate with a predetermined gap and is made of a soft material on the outer circumference of the rotor magnetic pole.
Since it is configured to be mounted, it is possible to prevent contact between the stator laminated core and the rotor magnetic pole, and prevent damage to them. Also, each ring-shaped contact protection plate is made of a soft material.
Since it is installed facing each other with a certain gap, usually
No friction occurs between the ring-shaped contact protection plates
There is little friction even when touched, and it is similar to when a bearing is installed.
Can work. In addition, the bearing was installed directly
In comparison with, there is no electrical and magnetic loss.
In addition, there is an effect that manufacturing can be facilitated.
【図１】この発明の一実施例による永久磁石形発電機を
示す縦断面図である。FIG. 1 is a vertical sectional view showing a permanent magnet generator according to an embodiment of the present invention.
【図２】図１の接触保護板３ａ，７ｂを示す拡大図であ
る。FIG. 2 is an enlarged view showing the contact protection plates 3a and 7b of FIG.
【図３】図２のＬ−Ｌ線における断面図である。3 is a cross-sectional view taken along the line LL in FIG.
【図４】従来の回転磁石形発電機を示す縦断面図であ
る。FIG. 4 is a vertical sectional view showing a conventional rotating magnet type generator.
【図５】図４のＭ−Ｍ線における断面図である。5 is a cross-sectional view taken along line MM in FIG.
【図６】ボーリング装置用タービン発電装置を示す断面
図である。FIG. 6 is a sectional view showing a turbine generator for a boring device.
２ 固定子積層コア ３ａ 接触保護板（第１のリング状接触保護板） ７ｂ 接触保護板（第２のリング状接触保護板） ８ 回転子 ９ 磁極（回転子磁極）2 Stator laminated core 3a Contact protection plate (first ring-shaped contact protection plate) 7b Contact protection plate (second ring-shaped contact protection plate) 8 Rotor 9 Magnetic pole (rotor magnetic pole)
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｅ２１Ｂ 47/18 Ｈ０２Ｋ 1/27 ５０１ Ｚ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Internal reference number FI Technical display location E21B 47/18 H02K 1/27 501 Z
Claims (1)
有した永久磁石形回転電機において、固定子積層コアの
内周に装着された軟質材料からなる第１のリング状接触
保護板と、その第１のリング状接触保護板に所定の空隙
をあけて対向され、且つ上記回転子磁極の外周に装着さ
れた軟質材料からなる第２のリング状接触保護板とを備
えたことを特徴とする永久磁石形回転電機。1. A permanent magnet type rotary electric machine having a rotor magnetic pole composed of a permanent magnet in a rotor, comprising :
First ring-shaped contact made of soft material mounted on the inner circumference
Protective plate and its first ring-shaped contact protective plate have a specified gap
Facing each other and mounted on the outer circumference of the rotor magnetic pole.
Second ring-shaped contact protection plate made of soft material
The permanent magnet type rotary electric machine, characterized in that there was e.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5027215A JPH0817541B2 (en) | 1993-01-25 | 1993-01-25 | Permanent magnet type rotating electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5027215A JPH0817541B2 (en) | 1993-01-25 | 1993-01-25 | Permanent magnet type rotating electric machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06225484A JPH06225484A (en) | 1994-08-12 |
| JPH0817541B2 true JPH0817541B2 (en) | 1996-02-21 |
Family
ID=12214885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5027215A Expired - Fee Related JPH0817541B2 (en) | 1993-01-25 | 1993-01-25 | Permanent magnet type rotating electric machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0817541B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3255160B2 (en) | 1999-12-10 | 2002-02-12 | 松下電器産業株式会社 | Brushless motor and method of assembling the same |
| JP3255164B2 (en) * | 2000-01-28 | 2002-02-12 | 松下電器産業株式会社 | Small flat motor |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5836166A (en) * | 1981-08-26 | 1983-03-03 | Konishiroku Photo Ind Co Ltd | Linear pulse motor |
| JPH01150471U (en) * | 1988-04-05 | 1989-10-18 | ||
| JPH03159554A (en) * | 1989-12-07 | 1991-07-09 | Mitsui Mining & Smelting Co Ltd | Rotor of actuator for door lock device |
-
1993
- 1993-01-25 JP JP5027215A patent/JPH0817541B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06225484A (en) | 1994-08-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3036645A (en) | Bottom-hole turbogenerator drilling unit | |
| EP1730386B1 (en) | Rotating systems associated with drill pipe | |
| US9303454B2 (en) | Systems and methods to reduce oscillations in magnetic couplings | |
| US7434634B1 (en) | Downhole turbine | |
| RU2581616C2 (en) | Determination of downhole natural-pressure motor rpm | |
| EP3472423B1 (en) | Modular downhole generator | |
| US7057316B2 (en) | Downhole torque generator | |
| US7687950B2 (en) | Drillstring alternator | |
| US20050200210A1 (en) | Apparatus and method for generating electrical power in a borehole | |
| EP3427368B1 (en) | Esp motor with sealed stator windings | |
| US10323511B2 (en) | Dual rotor pulser for transmitting information in a drilling system | |
| GB2489628A (en) | Fluid flow telemetry using magnetic motion converter | |
| CN102953912B (en) | Rotating magnetic field type underground generating set | |
| US8022561B2 (en) | Kinetic energy harvesting in a drill string | |
| US7755235B2 (en) | Downhole generator for drillstring instruments | |
| CN101725338A (en) | Underground generation device | |
| WO2020190537A1 (en) | Power generation with speed dependent magnetic field control | |
| JPH0817541B2 (en) | Permanent magnet type rotating electric machine | |
| CN201269096Y (en) | Down-hole electric generating apparatus | |
| EP3364531A1 (en) | A hybrid motor and an associated method thereof | |
| JPH07194053A (en) | Permanent magnet rotating electric machine | |
| CN211287957U (en) | Underground high-power turbine generator | |
| US11326419B2 (en) | Debris tolerant flux guided downhole rotating machine | |
| US11542770B2 (en) | Agitator for use with a drill string | |
| SU1668577A1 (en) | Device for cutting trenches |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313111 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |