JPS6065202A - Rotor construction - Google Patents
Rotor constructionInfo
- Publication number
- JPS6065202A JPS6065202A JP17301883A JP17301883A JPS6065202A JP S6065202 A JPS6065202 A JP S6065202A JP 17301883 A JP17301883 A JP 17301883A JP 17301883 A JP17301883 A JP 17301883A JP S6065202 A JPS6065202 A JP S6065202A
- Authority
- JP
- Japan
- Prior art keywords
- rotor
- members
- center hole
- face
- axial
- 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
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
- F01D5/06—Rotors for more than one axial stage, e.g. of drum or multiple disc type; Details thereof, e.g. shafts, shaft connections
- F01D5/066—Connecting means for joining rotor-discs or rotor-elements together, e.g. by a central bolt, by clamps
Abstract
Description
【発明の詳細な説明】
〔発明の利用分野〕”
本発明はロータ構造に係り、特に、高温雰囲気中で回転
する蒸気タービンロータ構造に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a rotor structure, and more particularly to a steam turbine rotor structure rotating in a high temperature atmosphere.
将来の石油の高騰と石油資源の枯渇に対する恐れより、
石炭利用高効率発電プラントの社会的要求があり、現在
の主蒸気温度圧力を上昇させ、高効率化を図る、いわゆ
る、超々臨界圧発電プラントの開発の必要性が高まって
いる。この頻々臨界圧プラント用蒸気タービンロータ材
は、主蒸気温度が１２００’ｌ；’ Ｉ ６４９Ｃ）に
もなるため、オーステナイト系Ａ２８６材が考えられて
いる。この人２８６材の最大の欠点は、鍛造するのに従
来材よりはるかに大きなプレス機を会費とすることで、
従来形状のロータを製作するためには飛躍的な鍛造能力
の向上を必要とする。このため、ロータを鍛造可能な重
量以下におさえねばならず、必然的にロータの設計に制
限が生ずる。Due to fear of future oil price hikes and depletion of oil resources,
There is a social demand for high-efficiency power generation plants that use coal, and there is an increasing need to develop so-called ultra-supercritical power generation plants that increase the current main steam temperature and pressure to improve efficiency. As the steam turbine rotor material for this critical pressure plant, the main steam temperature is often as high as 1200'I649C), so an austenitic A286 material is being considered. The biggest drawback of this person 286 material is that it requires a much larger press machine than conventional materials to forge.
In order to manufacture rotors with conventional shapes, it is necessary to dramatically improve forging capabilities. Therefore, the weight of the rotor must be kept below the weight that can be forged, which inevitably places restrictions on rotor design.
第１図は従来の蒸気タービンロータを示す。FIG. 1 shows a conventional steam turbine rotor.
従来の蒸気タービンロータは、Ｃｒ Ｍｏ Ｖ鋼で一体
鍛造された後、ディスク部２等の機械加工を行ない、動
数１を植え込む事により制作される。A conventional steam turbine rotor is manufactured by integrally forging Cr Mo V steel, then machining the disk portion 2, etc., and implanting a moving number 1.
又、通常、ロータ中心部には材料欠陥が集中しやすいた
め、中心孔３を設けている。Further, since material defects tend to concentrate at the center of the rotor, a center hole 3 is provided.
本発明の目的は、素材の重量制限なしに、大型ロータの
設計制作が可能なロータ構造を提供するにある。An object of the present invention is to provide a rotor structure that allows large rotors to be designed and produced without any weight limitations on materials.
本発明は、複数の円柱状、もしくは、円板状の分割製作
されたロータ部材を、各々の部材に設けたはめ込み部で
結合し、更に、ロータ部材の中心孔に設置した１本のボ
ルトで締結するようにしたものである。The present invention connects a plurality of cylindrical or disk-shaped rotor members that are manufactured separately through fitting portions provided on each member, and further uses a single bolt installed in the center hole of the rotor member. It was decided that the agreement would be concluded.
以下、本発明の一実施例を第２図及び第３図により説明
する。An embodiment of the present invention will be described below with reference to FIGS. 2 and 3.
第２図は、三分割ロータ部材よＶ構成されるロータ構造
の一例である。FIG. 2 is an example of a rotor structure having a V-shaped three-part rotor member.
ロータ部材４ａ、の発電機側Ｇの端面には、この部材と
同心に円形凹状はめ込み部５ａを形成する。複数のディ
スク部２及び動翼１をもつロータ部材４ｂのタービン側
Ｔの端面にはロータ部材４ａの円形凹状はめ込み部５ａ
にはめ込むための、ロータ部材と同心の円形凸状はめ込
み部６ａＱ、又、発電機側端面には、同様な円形凸状は
め込み部６ｂをそれぞれ設ける。ロータ部材４ｃのター
ピノ側端面には、ロータ部材４ａと同様なロータ部材と
同心の円形凹状はめ込み部５ｂを形成する。On the end face of the rotor member 4a on the generator side G, a circular concave fitting portion 5a is formed concentrically with the rotor member 4a. A circular concave fitting portion 5a of the rotor member 4a is provided on the turbine side T end surface of the rotor member 4b having a plurality of disk portions 2 and rotor blades 1.
A circular convex fitting part 6aQ concentric with the rotor member is provided for fitting, and a similar circular convex fitting part 6b is provided on the end face on the generator side. A circular concave fitting portion 5b concentric with the rotor member similar to the rotor member 4a is formed on the end surface of the rotor member 4c on the terpino side.
以上のロータ部材４ ａ、（４ｂ、 ４Ｃを上述の凸状
はめ込み部と、凹状はめ込み部で結合し、一体のロータ
を構成し、ロータ部材の中心孔３を貫通する締結ボルト
７を設置し、ロータ全体の端面でナツト８ａ、８ｂで締
結する。The above rotor members 4a, (4b, 4C) are combined with the above-mentioned convex fitting portion and concave fitting portion to form an integrated rotor, and a fastening bolt 7 passing through the center hole 3 of the rotor member is installed, Fasten with nuts 8a and 8b at the end face of the entire rotor.
第３図には、はめ込み部の詳細としてロータ部材４ａと
ロータ部材４ｂとのはめ込み部を示す。FIG. 3 shows the fitting portion between the rotor member 4a and the rotor member 4b as details of the fitting portion.
このように、ロータ部材４ａの円形凹状はめ込み部５ａ
とロータ部材４ｂの円形凸状はめ込み部６ａではめ込み
部が形成される。円形凹状はめ込み部５ａの軸方向深ざ
は、円形凸状はめ込み部６ａの突出部！１４１１方向長
さより犬となっており、軸方向には、はめ込み部接触面
９のみで両ロータ部材は接触する構造となっている。ま
た、ロータ部材４ｂの円形凸状はめ込み部６ａの外表面
及びロータ部材４ａ円形凹状はめ込み部５ａ円周表面に
はキー溝を作製し、アクシャルキ−１７を設置する。In this way, the circular concave fitting portion 5a of the rotor member 4a
A fitting portion is formed by the circular convex fitting portion 6a of the rotor member 4b. The axial depth of the circular concave fitting portion 5a is the protrusion of the circular convex fitting portion 6a! The length in the 1411 direction is a dog shape, and both rotor members are in contact with each other only at the fitting contact surface 9 in the axial direction. Further, key grooves are formed on the outer surface of the circular convex fitting portion 6a of the rotor member 4b and the circumferential surface of the circular concave fitting portion 5a of the rotor member 4a, and an axial key 17 is installed therein.
このロータ構造によれば以下の機能を発揮することがで
きる。This rotor structure can exhibit the following functions.
（１） 各はめ込み部でロータを結合するため、各ロー
タ部材の芯出しが可能となる。(1) Since the rotors are joined at each fitting part, it is possible to center each rotor member.
（２）隣接する部材間の回転力の伝達は基本的には、は
め込み部接触面９での摩擦力で行なわれるが、信頼性確
保のための設置したアクシャルキ−１７の剪断力でも可
能な構造となる。(2) Transmission of rotational force between adjacent members is basically carried out by frictional force at the contact surface 9 of the fitting part, but in order to ensure reliability, it is also possible to use the shearing force of the installed axial key 17. becomes.
（３）中心孔に設置した締結ボルト７により、各はめ込
み部接触面９の面圧を確保でき、軸方向蒸気力によるは
め込み部のぬけ出しを防止できる。(3) The fastening bolt 7 installed in the center hole can ensure surface pressure on the contact surface 9 of each fitting part, and can prevent the fitting part from slipping out due to axial steam force.
このように、ロータの重量制約なく信頼性の高いロータ
構造が可能となる。In this way, a highly reliable rotor structure can be achieved without any restrictions on the weight of the rotor.
一方、第４図は、本発明の一応用例を示す。On the other hand, FIG. 4 shows an example of application of the present invention.
第４図は、四分割されたロータ部材からなり、部材締結
用ポルｌ内包するケースである。FIG. 4 shows a case consisting of a rotor member divided into four parts and containing a member fastening pole l.
ロータ部材１０３の発電機側端面には、はめ込み部を形
成するフランジ継手部１１ａ’（ｒ形成する。A flange joint portion 11a' (r) is formed on the generator side end surface of the rotor member 103 to form a fitting portion.
ロータ部材１０１）ターピノ側端面にも、フラッジ継手
部１１ｂを設け、更にナツト用円形凹部１２ａを形成し
、発電機側端面には、円形四部はめ込み部１３ａを設け
る。Rotor member 101) A fludge joint portion 11b is also provided on the end face on the terpino side, and a circular recess 12a for a nut is further formed, and a four-circular fitting portion 13a is provided on the end face on the generator side.
また、ロータ部材ＩＱｃタービ／側端面には、円形凹部
はめ込み部１３ａとはめ合う、円形凸部はめ込み部１３
ｂ全形成し、発電機側端面には、ロータ部材１０ｂのタ
ーピノ側端面と四形状のフランジ継手部１１Ｃ及び、ナ
ツト用円形凹部１２ｂを設ける。Further, on the rotor member IQc turbine/side end surface, a circular convex fitting part 13 that fits with the circular concave fitting part 13a is provided.
b, and the generator side end face is provided with a four-shaped flange joint portion 11C and a circular nut recess 12b with the terpino side end face of the rotor member 10b.
ロータ部材１０ｄのタービン側端面には、ロータ部材１
０ａの発電機側端面と同様に、７２ンジ継手部１１ｄを
設ける。The rotor member 1 is provided on the turbine side end surface of the rotor member 10d.
Similarly to the generator side end face of 0a, a 72-inch joint portion 11d is provided.
以上のロータ部材で、まず、はめ込み部１３ａ１３ｂで
ロータ部材１０ｂ、１０ｃをはめ込み、その中心孔３を
利用して部材締結用ボルト１４及び二個のナラ）１５ａ
、１５ｂでロータ部材の納会を行ない、次にロータ部材
１０ａとロータ部材］ ０１）及びロータ部材１０ｃと
ロータ部材１０ｄとの結合全フラ／ジ継手部で、７う／
ジボルト１６により行なう。In the above rotor member, first, fit the rotor members 10b and 10c at the fitting portion 13a13b, and use the center hole 3 to tighten the member fastening bolt 14 and the two nuts 15a.
, 15b, and then the rotor member 10a and the rotor member] 01) and the joint part of the rotor member 10c and rotor member 10d at the full flanged joint part, 7u/
This is done using a divolt 16.
第４図に示したロータ構造の特徴は、中心孔を貫通して
設けられる部材締結用ボルト長さを短くする事ができる
点及び、ナツトをロータ内部に内包させることができる
。すなわち、ロータの必要な部所にのみ、本発明はめ込
み構造を採用できる。Features of the rotor structure shown in FIG. 4 are that the length of the member fastening bolt provided through the center hole can be shortened, and the nut can be contained inside the rotor. That is, the inset structure of the present invention can be applied only to necessary parts of the rotor.
本発明の応用例として、タービン一段落ごとにロータ部
材を製作し、はめ込み締結する構造、又、高温部のみ、
高温材料でめるＡ２８６材を使用し、他は従来のＣｒ−
Ｍｏ−Ｖ鋼を使用するなど異種材の継手構造も考えられ
る。As an application example of the present invention, there is a structure in which a rotor member is manufactured for each stage of the turbine, and the rotor member is fitted and fastened.
A286 material made of high temperature material is used, and the rest is conventional Cr-
A joint structure made of different materials, such as using Mo-V steel, is also conceivable.
不発Ｅ！Ａを利用したロータ冷却構造を第５図に示す。Unexploded E! A rotor cooling structure using A is shown in FIG.
中心孔に導いた冷却蒸気を、中心孔と部側締結用ボルト
１４間の環帯状空隙２１を流通させ、ロータ部材はめ込
み部へ導く。導かれた冷却用蒸気は、隣接した部材間の
軸方内空＠２２を通り、凹状はめ込み部をもつ部材に設
けられた、複数のキー溝状空隙２３、及び、半径方向空
隙２４を通過し、ロータ外周部２５へ噴出させる。この
方法により、ロータ外表面を冷却することが可能であり
、冷却したい部所に部材はめ込み部を設ければより効果
的となる。このような意味では、第５図に示すようにデ
ィスク付根部２６をはめ込み部とするのがよい。The cooling steam led to the center hole is passed through the annular gap 21 between the center hole and the part-side fastening bolt 14, and is led to the rotor member fitting portion. The guided cooling steam passes through an axial inner space @ 22 between adjacent members, and passes through a plurality of keyway-shaped spaces 23 and radial spaces 24 provided in a member having a concave fitting. , and is ejected to the rotor outer circumferential portion 25. By this method, it is possible to cool the outer surface of the rotor, and it becomes more effective if a member fitting part is provided at the part to be cooled. In this sense, it is preferable to use the disk root portion 26 as a fitting portion as shown in FIG.
本発明によれば、素材−個の重量を小さくすることがで
き、これらの部材を結ぎ合わせ信頼性の高い、素材鍛造
制限からの制約のない、大型ロータを制作することかで
きる。また、容易にロータの冷却ができる。According to the present invention, it is possible to reduce the weight of each piece of material, and by joining these members together, it is possible to produce a large rotor that is highly reliable and free from limitations imposed by material forging limitations. In addition, the rotor can be easily cooled.
第１図は従来形状の蒸気タービンロータの側面図、第２
図は本発明の一実施例の部分断面図、第３図（ａ）、
（ｂ）は本発明の一実施例のはめ込み部詳細図で第３図
（ｂ）は（ａ）のＢ−Ｂ矢視断面図、第４図は本発明の
他の実施例の部分断面図、第５図（ａ）、 （ｂ）は本
発明のロータ冷却構造の断面図（ａ）およびＢ−Ｂ矢視
断面図（ｂ）でろる。
４ａ・・・タービン部材Ａ１４ｂ・・・タービン部材Ｂ
、４Ｃ・・・タービン部材Ｃ１５ａ、５ｂ・・・円形凹
状はめこみ部、５ａ、５ｂ・・・円形凸状はめ込み部、
７・・・締結ポル）、８ａ、８ｂ・・・ナラ）、１５ａ
、１５ｂ・・・ナツト、１７・・・アクシャルキー。
代理人 弁理士 高橋明夫
第づ
ＯＬ）
（４）Figure 1 is a side view of a conventionally shaped steam turbine rotor;
The figure is a partial sectional view of one embodiment of the present invention, FIG. 3(a),
(b) is a detailed view of the fitting part of one embodiment of the present invention, FIG. 3(b) is a sectional view taken along the line B-B of (a), and FIG. 4 is a partial sectional view of another embodiment of the present invention. , FIGS. 5(a) and 5(b) are a sectional view (a) and a sectional view taken along the line B-B (b) of the rotor cooling structure of the present invention. 4a...Turbine member A14b...Turbine member B
, 4C...Turbine member C15a, 5b...Circular concave fitting part, 5a, 5b...Circular convex fitting part,
7...Conclusion Pol), 8a, 8b...Nara), 15a
, 15b...Natsuto, 17...Axial key. Agent: Patent Attorney Akio Takahashi (OL) (4)
Claims (1)
り構成され、歯温雰囲気中で回転するロータにおいて、 隣接する前記部材間に面する、一方の部材の端面に前記
部材と同心で、前記部材の外径より小さい円板状の凸部
を、他方の部材の端面に同様に前記部材と同心で前記部
材の外径より小さい円形状の凹部、すなわち、隣接する
部材間にはめ込み部を形成し、このはめ込み部で複数の
部材を連続的に結合し、隣接した部材の回転力の伝達確
保のため、はめ込み部面部外周面にアクシャルキーを設
置し、更に、前記各部材の中心孔を貫通するように設置
したボルトで複数の前記部材より構成されるロータを締
結することを特徴とするロータ構造。 ２、特許請求の範囲第１項において、 ロータ中心孔に導いた冷却用流体を部材締結ボルトと前
記ロータ中心孔間の環状空隙部を流通させるために部材
はめ込み部半径方向両部材接触面に設けた軸方向溝、及
び軸方向接触面に設けた半径方向溝を設けたことを特徴
とするロータ冷却構造。[Claims] 1. In a rotor that is composed of a plurality of cylindrical or disk-shaped members having a central hole and rotates in a tooth temperature atmosphere, an end face of one member facing between the adjacent members. A disc-shaped convex portion concentric with the member and smaller than the outer diameter of the member is provided on the end face of the other member, and a circular recess similarly concentric with the member and smaller than the outer diameter of the member, i.e., adjacent. An inset part is formed between the members to be connected to each other, a plurality of members are connected continuously at this inset part, and an axial key is installed on the outer peripheral surface of the face part of the inset part in order to ensure transmission of rotational force between adjacent members. A rotor structure characterized in that a rotor made up of a plurality of the members is fastened together with a bolt installed so as to pass through a center hole of each member. 2. In claim 1, a member fitting portion is provided at the radial contact surface of both members in order to allow the cooling fluid introduced into the rotor center hole to flow through the annular gap between the member fastening bolt and the rotor center hole. What is claimed is: 1. A rotor cooling structure characterized in that a rotor cooling structure is provided with an axial groove provided on the axial contact surface and a radial groove provided on the axial contact surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17301883A JPS6065202A (en) | 1983-09-21 | 1983-09-21 | Rotor construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17301883A JPS6065202A (en) | 1983-09-21 | 1983-09-21 | Rotor construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6065202A true JPS6065202A (en) | 1985-04-15 |
Family
ID=15952675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17301883A Pending JPS6065202A (en) | 1983-09-21 | 1983-09-21 | Rotor construction |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6065202A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62189301A (en) * | 1986-02-14 | 1987-08-19 | Hitachi Ltd | High and low pressure integrated steam turbine rotor |
| FR2800124A1 (en) * | 1999-10-21 | 2001-04-27 | Toshiba Kk | Compound steam turbine rotor uses steel with different amounts of chromium, nickel, molybdenum and vanadium for high, intermediate and low pressure stages joined by welding |
| JP2007132352A (en) * | 2005-11-11 | 2007-05-31 | General Electric Co <Ge> | Rotor assembly for stacking type reactionary steam turbine |
| JP2009216094A (en) * | 2008-03-07 | 2009-09-24 | General Electric Co <Ge> | Steam turbine rotor and method of assembling the same |
-
1983
- 1983-09-21 JP JP17301883A patent/JPS6065202A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62189301A (en) * | 1986-02-14 | 1987-08-19 | Hitachi Ltd | High and low pressure integrated steam turbine rotor |
| FR2800124A1 (en) * | 1999-10-21 | 2001-04-27 | Toshiba Kk | Compound steam turbine rotor uses steel with different amounts of chromium, nickel, molybdenum and vanadium for high, intermediate and low pressure stages joined by welding |
| JP2007132352A (en) * | 2005-11-11 | 2007-05-31 | General Electric Co <Ge> | Rotor assembly for stacking type reactionary steam turbine |
| US7537430B2 (en) * | 2005-11-11 | 2009-05-26 | General Electric Company | Stacked reaction steam turbine rotor assembly |
| JP2009216094A (en) * | 2008-03-07 | 2009-09-24 | General Electric Co <Ge> | Steam turbine rotor and method of assembling the same |
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