JPS58217702A - Structure for fixing ceramic shaft of impeller - Google Patents
Structure for fixing ceramic shaft of impellerInfo
- Publication number
- JPS58217702A JPS58217702A JP9915082A JP9915082A JPS58217702A JP S58217702 A JPS58217702 A JP S58217702A JP 9915082 A JP9915082 A JP 9915082A JP 9915082 A JP9915082 A JP 9915082A JP S58217702 A JPS58217702 A JP S58217702A
- Authority
- JP
- Japan
- Prior art keywords
- impeller
- shaft
- ceramic shaft
- sleeve
- ceramic
- 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.)
- Granted
Links
- 239000000919 ceramic Substances 0.000 title claims abstract description 44
- 239000000411 inducer Substances 0.000 claims description 2
- 239000002184 metal Substances 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 239000003779 heat-resistant material Substances 0.000 description 1
- 229910001234 light alloy Inorganic materials 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/02—Blade-carrying members, e.g. rotors
- F01D5/025—Fixing blade carrying members on shafts
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Supercharger (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
【発明の詳細な説明】 本発明はインペラのセラミンク軸取付は構台に関する。[Detailed description of the invention] The present invention relates to a gantry for mounting a ceramic shaft of an impeller.
近年のガスタービンやクーポチャージャにおいては、耐
熱材料として優れた特性を持つのみなら（１）
ず、その他の機械的特性においても金属材料に比して適
性のあるセラミンクを高温部品に適用する研究カ進めら
れており、殊にタービンロータとロータ軸とをセラミツ
クスで一体に成形すれば、効果的に重量軽減と慣性力の
低減が図れるのみならずコストダウンが図れるが、この
ような場合、セラミツクスのロータ軸に、例えば軽合金
製の圧縮機インペラを取付けねばならず、種々な間頭点
の解決が必要とされる。In recent years, research efforts have been focused on applying ceramics to high-temperature parts in gas turbines and coupo chargers, which not only have excellent properties as a heat-resistant material (1) but also have other mechanical properties that are more suitable than metal materials. In particular, if the turbine rotor and rotor shaft are integrally molded using ceramics, it is possible to effectively reduce weight and inertia as well as reduce costs. A compressor impeller made of, for example, a light alloy must be attached to the rotor shaft, and various considerations must be taken.
第１図は従来のこの種インペラのセラミンク軸との取付
は構造の一例を示しく特願昭ｓｔｉ −ｔｒ３ｔｓ号参
照）、ここでｌはセラミックロータ軸（以下でセラミン
ク軸という〕であり、その段付き部／Ａから先の小径軸
部／Ｈには圧縮機インベラコが嵌め合わされており、イ
ンペラ２を段付き部／Ａに当接させた状態となし、軸部
／Ｈの端部に螺刻されているね）＠ｉｃにナンド３を締
着してインペラコを固定している。≠は軸ｌ用の軸受部
材を示す。Figure 1 shows an example of the structure of the conventional installation of this type of impeller with a ceramic shaft (see Japanese Patent Application Sho-sti-tr3ts), where l is the ceramic rotor shaft (hereinafter referred to as the ceramic shaft); A compressor inveraco is fitted to the small diameter shaft part /H beyond the stepped part /A, and the impeller 2 is brought into contact with the stepped part /A, and a screw is attached to the end of the shaft part /H. (It's engraved) @ic is tightened with Nando 3 to fix the imperaco. ≠ indicates a bearing member for shaft l.
しかしながら、このような従来の圧縮機インペｆ フ
）
ラのセラミンク軸との取付けＩｆＩＩｔ造においでは、
セラミンク軸ｌの軸端に刻設したねじ部／Ｃにナンド３
を螺着することによりインペラコを固定するようになっ
ているので、セラミック軸ｌのねじ加工にコストがかか
るのみならず、このねじ部ＩＣにかかるナンド３の締結
力と、一般にはアルミニウム合金等で形成されている圧
縮機インペラλの熱膨張によりナンド３を介してねじ部
／Ｃに集中する引張り力のためにねじ部／Ｃが破損し易
い。However, such conventional compressor impedance
) When installing a ceramic shaft with a IfIIt construction,
Nand 3 on the threaded part/C carved on the end of the ceramic shaft L
Since the impeller is fixed by screwing on the screw, not only does it cost more to process the thread of the ceramic shaft l, but the fastening force of the Nand 3 applied to this threaded part IC and the Due to the thermal expansion of the formed compressor impeller λ, the threaded portion/C is likely to be damaged due to the tensile force concentrated on the threaded portion/C via the NAND 3.
本発明の目的は、上述した欠点を除去し、廉価で得られ
、しかも破損を生じる虞れのないインペラのセラミック
軸取付は構造を提供することにある。SUMMARY OF THE INVENTION The object of the present invention is to eliminate the above-mentioned drawbacks and to provide a structure for mounting an impeller on a ceramic shaft that is inexpensive and free from damage.
かかる目的を達成するために、本発明では、インペラを
嵌め合わすセラミンク軸の端部とインペラの取付は孔と
の間に金属スリーブを介装するようになし、この金属ス
リーブの噛め合わせる側の端部には、セラばンク軸の係
止溝と係合する保合部を設けるとともに、他端部にねじ
部を形成し、セラミック軸に嵌め合わせた金属スリーブ
をインペラの取付は孔に嵌合してそのねじ部にナンドを
螺着しインペラを固定する。なお、ここで、インペラは
予熱しておき、焼き嵌めにより嵌着する。In order to achieve such an object, in the present invention, a metal sleeve is interposed between the end of the ceramic shaft into which the impeller is fitted and the hole in which the impeller is mounted, and the end of the metal sleeve on the mating side The part is provided with a retaining part that engages with the locking groove of the ceramic bank shaft, and a threaded part is formed on the other end, and the metal sleeve that is fitted onto the ceramic shaft is fitted into the hole for installing the impeller. Then, screw the NAND onto the threaded part to fix the impeller. Note that here, the impeller is preheated and fitted by shrink fitting.
以下に、図面に基づいて本発明の詳細な説明する。The present invention will be described in detail below based on the drawings.
第一図は本発明の一実施例を示し、ここで／ｌはセラミ
ンク軸、／／Ａはセラミック軸／／にインペラ２を嵌合
して当接させる段付き部、／／Ｂはセラばンク軸／／の
小径軸部であり、小径軸部／／Ｂの段付き部／／Ａに沿
った外周部に環状の係止溝／／Ｃを設ける。／２は金属
製のスリーブ部材であり、／２ Ａはスリーブ部材／２
のスリーブ部、／２ Ｂはねじ部である。このスリーブ
部／２ Ａは、第３図に示すよりに軸方向に刻設した複
数のスリット１３を有し、更にスリーブ部／２ Ａの端
部には軸心側に突出させた係合ｆＡ１４ｔを設けて、ス
リーブ部／２ Ａの内径が小径軸部／／ Ｂの径φＣと
等しく１よるように形成する。しかして、このスリーブ
部７２ Ａを小径軸部／／Ｂと完全に嵌め合わせた状態
では、スリーブ部／２ Ａの係合部１４Ｉが軸部／／Ｂ
の係止溝／／Ｃに係合するとともに、この保合部／りと
段付き部／／Ａの壁面との間に余裕空間が保てるよ５に
する。／Ｓはインペラー〇取付は孔、２Ａのエクスデユ
ー′＋ｊ′個に設けたテーバ部であり、このテーバ部／
Ｓを設けることにより、運転中インペラーが熱膨張して
も係止溝／／Ｃを介してセラミンク小径軸部／／ Ｂを
押圧することがなく、このような応力の集中するのを防
止することができる。１６はインペラーを固着するナン
ドである。FIG. 1 shows an embodiment of the present invention, where /l is a ceramic shaft, //A is a stepped portion on which the impeller 2 is fitted and brought into contact with the ceramic shaft, //B is a ceramic shaft. This is a small diameter shaft portion of the link shaft //, and an annular locking groove //C is provided on the outer periphery along the stepped portion //A of the small diameter shaft portion //B. /2 is a metal sleeve member, /2 A is a sleeve member /2
The sleeve part, /2B is the threaded part. This sleeve part/2A has a plurality of slits 13 cut in the axial direction as shown in FIG. is provided so that the inner diameter of the sleeve portion/2A is equal to the diameter φC of the small diameter shaft portion/B. Therefore, when this sleeve part 72A is completely fitted with the small diameter shaft part//B, the engaging part 14I of the sleeve part/2A is connected to the shaft part //B.
5 so that it engages with the locking groove //C and maintains an extra space between this retaining portion //A and the wall surface of the stepped portion //A. /S is the impeller 〇 mounting hole and the taper part provided in the 2A exude'+j' pieces, and this taper part /
By providing S, even if the impeller thermally expands during operation, it will not press the ceramic small diameter shaft part //B through the locking groove //C, and prevent such concentration of stress. I can do it. 16 is a nand for fixing the impeller.
このように構成したインペラのセラインク軸取付ケ構造
により、セラミック軸／／にインペラコを取付けるには
、第３図に示すように、まずセラミンク軸／／の小径軸
部／／ＢをスリーブｍＲ／２に嵌め合わせるが、そのス
リーブｇ ／２ Ａにはスリット／３が設けられている
ので、スリーブ／２Ａが軸部／／ Ｂにより拡げられ、
その保合＠／ｌが小径軸部／／Ｂを摺動して係止溝ｉｉ
ｃに係合する。次いで、圧縮機インペラ２を高温に保
ち、セラミンク軸／ｌに取付けたスリーブ＠ は／２を
インペラλの取付は孔／２ Ａに焼き嵌めして、そのね
じ部２Ｂにナンド１６を螺（ｊ）
合し締結する。In order to attach the impeller to the ceramic shaft // using the ceramic shaft mounting structure of the impeller configured as described above, first attach the small diameter shaft portion //B of the ceramic shaft // to the sleeve mR/2, as shown in Fig. 3. However, since the sleeve g /2A is provided with a slit /3, the sleeve /2A is expanded by the shaft part //B,
The locking @/l slides on the small diameter shaft //B and locks into the locking groove ii.
engages c. Next, while keeping the compressor impeller 2 at a high temperature, shrink-fit the sleeve @/2 attached to the ceramic shaft/l into the hole/2A for installing the impeller λ, and screw the Nand 16 into the threaded portion 2B. ) to conclude the agreement.
第７図は本発明の他の実施例を示し、本例は、セラミン
ク軸／／にスリーブ部材／２を取付けるにあたり、相互
間に回り止めのキーを設けた例である。FIG. 7 shows another embodiment of the present invention, in which a locking key is provided between the sleeve member 2 and the ceramic shaft when the sleeve member 2 is attached to the ceramic shaft.
一般には、発生トルクが小さいので、金属スリーブ部材
／２を取付けたセラミック軸ｌ／とインペラーとは焼き
嵌めするだけで、スリーブ部材／２とセラミック小径軸
＠／／Ｂとの間は十分圧接された状態を保つことができ
るが、本例は発生トルクが大きく、双方間に回り止めを
施す方が安全と考えられる場合に適用する好適例である
。ここで、〃は回り止めのキーであり、このキー〃を小
径軸部／／Ｂに設けたキー溝／ｌ ｐと、スリーブ部／
λに設けたキー＃ ／２ Ｄとに嵌め合わせるようにす
る。その他の構成については、第２図および第３図の場
合と同様であり、その説明を省略する。In general, since the generated torque is small, the impeller and the ceramic shaft l/ to which the metal sleeve member /2 is attached are simply shrink-fitted, and the sleeve member /2 and the ceramic small diameter shaft @//B are in sufficient pressure contact. However, this example is a suitable example to be applied when the generated torque is large and it is considered safer to prevent rotation between both sides. Here, 〃 is a key to prevent rotation, and this key 〃 is connected to the key groove /lp provided in the small diameter shaft part //B, and the sleeve part /
Make sure to fit it into the key #/2D provided at λ. The other configurations are the same as those in FIGS. 2 and 3, and their explanation will be omitted.
第５図は本発明の更に他の実施例を示す。本例では、ス
リーブ部（汀／２のスリーブ部／２ Ａの＠部７２Ｆに
突設した係合部を設けない。要すれば、本Ｎに示すよう
に、その端部を軸心側に向けて絞り込（６）
む形状としてもよいが、必らずしもその要はなく、本例
の場合は取付は孔２人にテーバ部を殊更に設けてないの
で、焼き嵌めにより取付は孔２人にスリーブ部／２とセ
ラミンク軸／／とを嵌め合わすと、インベラコが冷却さ
れるに従い、スリーブ部端部／２ Ｆは圧縮されて軸心
側へと押し曲げられる傾向を生じ、その結果として図に
示すような形状となり、保合部を設けたと同様な効果が
得られろ。その他の構成については、第２図の場合と同
様であり、その説明を省略する。なお、本例においても
第１図に示すキーを併設してもよいことはいうまでもな
い。FIG. 5 shows yet another embodiment of the invention. In this example, the engaging part protruding from the @ part 72F of the sleeve part (Sleeve part/2 A of the sleeve part/2) is not provided.If necessary, as shown in this (6) It is also possible to use a shape in which the holes are narrowed (6), but this is not necessary.In this example, the two holes are not particularly provided with tapered parts, so the installation can be done by shrink fitting. When the sleeve part 2 and the ceramic shaft // are fitted into the two holes, as the inveraco cools, the sleeve part end part 2 F tends to be compressed and bent toward the shaft center. As a result, the shape is as shown in the figure, and the same effect as provided with the retaining part can be obtained.The other configurations are the same as in the case of Figure 2, and the explanation thereof will be omitted.In addition, in this example It goes without saying that the key shown in FIG. 1 may also be provided.
以上説明してきたように、本発明によれば、インペラの
軸取付は孔とセラミンク軸との間に、ねじ部とスリーブ
部とからなる金属製スリーブ部材のスリーブ部を嵌め合
わせて、この嵌め合わせたスリーブ部の＠部をセラミッ
ク軸の周囲に設けた係止溝に係合させ、金属製スリーブ
部材のねじ部を取付は孔からインペラのインデューサ側
まで貫通させてこのねじ部にナンドを螺看して締結する
ようにしたので、セラミック軸にねじ加工する割高の費
用が節減できてコスト低減に役立つのみならず、ねじ部
からセラミンク軸が破損するようなことがなくなり、強
固にインペラをセラミンク軸に固着することができる。As explained above, according to the present invention, the shaft of the impeller is mounted by fitting the sleeve portion of a metal sleeve member consisting of a threaded portion and a sleeve portion between the hole and the ceramic shaft. The @ part of the sleeve part is engaged with the locking groove provided around the ceramic shaft, and the threaded part of the metal sleeve member is passed through the hole to the inducer side of the impeller, and the NAND is screwed into this threaded part. This method not only saves the relatively high cost of threading the ceramic shaft and helps reduce costs, but also prevents the ceramic shaft from being damaged from the threaded part, making the impeller strong and durable. Can be fixed to the shaft.
更にまた、スリーブ部とセラミンク軸との間に回り止め
キーを設けるようにすれば、大きいトルクが発生する場
合にも堪えることができる。Furthermore, by providing a detent key between the sleeve portion and the ceramic shaft, it is possible to withstand even when a large torque is generated.
第１図は従来のインペラのセラミンク軸取付は構造の一
例を示す断面図、第２図は本発明インペラのセラミック
軸取付は構造の一例を示す断面図、第３図はその構成を
分解して示す斜視図、第弘図は本発明の他の実施例に１
６げるセラミンク軸と金属スリーブ部材およびキーを分
解して示す斜視図、第５図は本発明の更に他の実施例を
示す断面図である。
ｌ・・セラミンク軸、 ／Ａ・・・段付き部、／
Ｂ・・・小径軸部、 ／Ｃ・・・ねじ部、２・イ
ンペラ、 ２Ａ・・・取付は孔、３・・ナンド
、 ｌ・・・軸受は部材、／／・・・セラミ
ンク軸、 ／／Ａ・・・段例き部、／／Ｂ・・・
小径軸部、 ／／Ｃ・・係止溝、／／Ｄ・・・キ
ー溝、 ／２・・・スリーブ部材、／２人・・
・スリーブ部、 ／２Ｂ・・ねじ部、／２Ｄ・・・
キー溝、 ／２Ｆ・・・姻部、１３・・・スリ
フト、／ｌＩ・・・係合部、／Ｓ・・・テーパ部、
／６・・・ナンド、〃・・・キー。
特許出願人 日産自動車株式会社
（９〕Fig. 1 is a sectional view showing an example of the structure of a conventional impeller with a ceramic shaft mounted thereon, Fig. 2 is a sectional view showing an example of the structure of an impeller with a ceramic shaft of the present invention, and Fig. 3 is an exploded view of the structure. The perspective view shown in FIG. 1 shows another embodiment of the present invention.
FIG. 5 is an exploded perspective view showing a ceramic shaft, a metal sleeve member, and a key, and FIG. 5 is a sectional view showing still another embodiment of the present invention. l...Ceramink shaft, /A...Stepped part, /
B...Small diameter shaft part, /C...Threaded part, 2. Impeller, 2A...Mounting hole, 3...Nand, l...Bearing is member, //...Ceramink shaft, / /A... Column section, //B...
Small diameter shaft part, //C...locking groove, //D...key groove, /2...sleeve member, /2 people...
・Sleeve part, /2B... Thread part, /2D...
Keyway, /2F... joint part, 13... thrift, /lI... engaging part, /S... taper part,
/6... Nando, 〃... key. Patent applicant Nissan Motor Co., Ltd. (9)
Claims (1)
手段を用いて前記インペラを前記セラミック軸に固着す
るようにしたインペラのセラミック軸取付は構造におい
て、ねじ部とスリーブ部とを有する金属スリーブ部材の
スリーブ部を前記取付は孔と前記セラミンク軸との間に
嵌め合わせて、前記スリーブ部の端部を前記セラミック
軸に設けた係止溝に係合させ、前記ねじ部を前記インペ
ラのインデューサ側に突出させて前記ねじ部にナンドを
螺合し、締結するようにしたことを特徴トスルインベラ
のセラミック軸取付ケ構造。The impeller is mounted by fitting the ceramic shaft into the hole and fixing the impeller to the ceramic shaft using a screw means. The sleeve portion is fitted between the mounting hole and the ceramic shaft, the end of the sleeve portion is engaged with a locking groove provided on the ceramic shaft, and the threaded portion is connected to the inducer side of the impeller. A ceramic shaft mounting structure of a tossle invera characterized by a structure in which a nand is made to protrude from the threaded part and is screwed into the threaded part to be fastened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9915082A JPS58217702A (en) | 1982-06-11 | 1982-06-11 | Structure for fixing ceramic shaft of impeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9915082A JPS58217702A (en) | 1982-06-11 | 1982-06-11 | Structure for fixing ceramic shaft of impeller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58217702A true JPS58217702A (en) | 1983-12-17 |
| JPH0424521B2 JPH0424521B2 (en) | 1992-04-27 |
Family
ID=14239655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9915082A Granted JPS58217702A (en) | 1982-06-11 | 1982-06-11 | Structure for fixing ceramic shaft of impeller |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58217702A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3625996A1 (en) * | 1986-07-31 | 1988-02-04 | Kuehnle Kopp Kausch Ag | Rotor for an exhaust turbocharger |
| JPS63183433U (en) * | 1987-05-20 | 1988-11-25 | ||
| US4915589A (en) * | 1988-05-17 | 1990-04-10 | Elektroschmelzwerk Kempten Gmbh | Runner with mechanical coupling |
| US6431781B1 (en) * | 2000-06-15 | 2002-08-13 | Honeywell International, Inc. | Ceramic to metal joint assembly |
| US20090263253A1 (en) * | 2008-04-21 | 2009-10-22 | Honeywell International Inc. | Engine components and rotor groups |
| WO2011114715A1 (en) * | 2010-03-17 | 2011-09-22 | 東京電力株式会社 | Axial flow compressor |
| JP2013139753A (en) * | 2012-01-05 | 2013-07-18 | Mitsubishi Heavy Ind Ltd | Impeller, rotor comprising the same, and impeller manufacturing method |
| US11421581B2 (en) | 2018-05-24 | 2022-08-23 | Ihi Corporation | Rotating body and turbocharger |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56159600A (en) * | 1980-05-09 | 1981-12-08 | Mitsubishi Heavy Ind Ltd | Impeller fitting structure |
-
1982
- 1982-06-11 JP JP9915082A patent/JPS58217702A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56159600A (en) * | 1980-05-09 | 1981-12-08 | Mitsubishi Heavy Ind Ltd | Impeller fitting structure |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3625996A1 (en) * | 1986-07-31 | 1988-02-04 | Kuehnle Kopp Kausch Ag | Rotor for an exhaust turbocharger |
| JPS63183433U (en) * | 1987-05-20 | 1988-11-25 | ||
| US4915589A (en) * | 1988-05-17 | 1990-04-10 | Elektroschmelzwerk Kempten Gmbh | Runner with mechanical coupling |
| US6431781B1 (en) * | 2000-06-15 | 2002-08-13 | Honeywell International, Inc. | Ceramic to metal joint assembly |
| US20090263253A1 (en) * | 2008-04-21 | 2009-10-22 | Honeywell International Inc. | Engine components and rotor groups |
| US8292590B2 (en) * | 2008-04-21 | 2012-10-23 | Honeywell International Inc. | Engine components and rotor groups |
| WO2011114715A1 (en) * | 2010-03-17 | 2011-09-22 | 東京電力株式会社 | Axial flow compressor |
| JP2011196188A (en) * | 2010-03-17 | 2011-10-06 | Tokyo Electric Power Co Inc:The | Axial flow compressor |
| US9188135B2 (en) | 2010-03-17 | 2015-11-17 | Tokyo Electric Power Company, Incorporated | Axial flow compressor |
| JP2013139753A (en) * | 2012-01-05 | 2013-07-18 | Mitsubishi Heavy Ind Ltd | Impeller, rotor comprising the same, and impeller manufacturing method |
| US11421581B2 (en) | 2018-05-24 | 2022-08-23 | Ihi Corporation | Rotating body and turbocharger |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0424521B2 (en) | 1992-04-27 |
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