JPS63150401A - Overhauling method of turbine rotor - Google Patents

Overhauling method of turbine rotor

Info

Publication number
JPS63150401A
JPS63150401A JP29850086A JP29850086A JPS63150401A JP S63150401 A JPS63150401 A JP S63150401A JP 29850086 A JP29850086 A JP 29850086A JP 29850086 A JP29850086 A JP 29850086A JP S63150401 A JPS63150401 A JP S63150401A
Authority
JP
Japan
Prior art keywords
rotor
wheel
wheels
turbine
sleeves
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
Application number
JP29850086A
Other languages
Japanese (ja)
Inventor
Fujiyo Honda
本田 藤代
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Priority to JP29850086A priority Critical patent/JPS63150401A/en
Publication of JPS63150401A publication Critical patent/JPS63150401A/en
Pending legal-status Critical Current

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  • Turbine Rotor Nozzle Sealing (AREA)

Abstract

PURPOSE:To quickly and safely overhaul a turbine rotor by taking out a blade of a turbine rotor from each wheel, then gas cutting two surfaces opposite to each other in the diametrical direction of each wheel in parallel, end forming a notch reaching a rotor on each cutting plane. CONSTITUTION:A turbine rotor comprises a plurality of wheels 2 fitted with a blade 1 on the outer periphery thereof, which are fitted to a rotor 3, and a pair of sleeves 4 fitted to the rotor 3 from both ends of be plural wheels 2. In case of overhauling the turbine rotor, first both end portions of the rotor 3 of the turbine rotor taken out from a compartment are placed on a pedestal. Secondly all the blades 1 of every stages are drawn out from the respective wheels 2, and then two surfaces opposite to each other in the diametrical direction of each wheel 2 are sequentially gas-cut. Subsequently with the respective cutting planes directed in the vertical direction, a notch 2a extended in the axial direction of the rotor from each cutting plane through the sleeve 4 to the outer periphery of the rotor 3 is formed by oxy arc cutting to separate the respective wheels 2 end the sleeves 4 from the rotor 3.

Description

【発明の詳細な説明】 〔発明の目的〕 (産業上の利用分野) 本発明は原子力発電所のタービン回転体の解体方法に係
り、とりわけ迅速かつ安全に解体することができるター
ビン回転体の解体方法に関する。
[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention relates to a method for dismantling a turbine rotating body of a nuclear power plant, and particularly to a method for dismantling a turbine rotating body that can be dismantled quickly and safely. Regarding the method.

(従来の技術) 発電用の蒸気タービンは、車室内に蒸気を送り込み車内
のタービン回転体を回転させて発電するものである。
(Prior Art) A steam turbine for power generation generates electricity by feeding steam into a vehicle interior and rotating a turbine rotating body inside the vehicle.

一般にこのタービン回転体は、外周にブレードが取付け
られた複数のホイールを、ロータに焼嵌めによって嵌着
し、さらにロータに一対のスリーブを嵌込み構成されて
いる。
Generally, this turbine rotating body is constructed by shrink-fitting a plurality of wheels each having blades attached to the outer periphery of the rotor, and further fitting a pair of sleeves into the rotor.

従来、使用済の火力発電所のタービン回転体は、ブレー
ドのみ堰外しロータに各ホイールを取付けたまま廃棄し
ていた。しかしながら、原子力発電所のタービン回転体
を廃棄する際は、除染を行なわなければならず、とりわ
けロータと各ホイールとの間の嵌込部を除染する必要が
あるため、ロー夕と各ホイールとを分解することが求め
られていた。
Conventionally, turbine rotating bodies from used thermal power plants were disposed of by removing only the blades and leaving each wheel attached to the rotor. However, when disposing of a nuclear power plant's turbine rotating body, it is necessary to decontaminate it, and in particular, it is necessary to decontaminate the fitting part between the rotor and each wheel. It was required to disassemble the

従来、原子力発電所のタービン回転について、必要のな
くなった一部の段のブレードをホイールと伴にロータか
ら取外すことが行なわれていた。
Conventionally, when rotating a turbine in a nuclear power plant, the blades of some stages that are no longer needed are removed from the rotor together with the wheel.

例えば、この取外し方法は、取外すべきホイールのブレ
ードを抜き取り、隣接するホイールを保護して取外すホ
イールの両側部にボール盤が入るだけの切欠部を形成し
、この切欠部にボール盤を入れてホイールの両側部をシ
ャフトまで複数個所開孔し、ホイールを上下方向に取外
すものである。
For example, this removal method involves removing the blade of the wheel to be removed, forming a notch on both sides of the wheel to be removed while protecting the adjacent wheel, and inserting the drill press into this notch to remove both sides of the wheel. Holes are drilled in multiple locations up to the shaft, and the wheel is removed in the vertical direction.

そしてこの取外したホイールの後にはスペーサを挿着し
ていた。
A spacer was then inserted after the removed wheel.

しかしながら、これは一部の段のホイールを取外すもの
であり、ロータと各ホイールを分解したりして全体とし
て解体することはなかった。
However, this involved removing the wheels of some stages, and the rotor and each wheel were not disassembled as a whole.

(発明が解決しようとする問題点) 上述のように、原子力発電所のタービン回転体は、使用
後除染して廃棄しなければならない。とりわけロータと
ホイールとの間の嵌込部等を除染するためにはロータと
各ホイールを分解することが必要であるが、従来タービ
ン回転体を全体として分解するることはなかった。
(Problems to be Solved by the Invention) As described above, the turbine rotor of a nuclear power plant must be decontaminated and disposed of after use. In particular, in order to decontaminate the fitting part between the rotor and the wheel, it is necessary to disassemble the rotor and each wheel, but conventionally the turbine rotating body has not been disassembled as a whole.

本発明はこのような点を考慮してなされたものであり、
安全かつ迅速に解体することができるタービン回転体の
解体方法を提供することを目的とする。
The present invention has been made in consideration of these points,
It is an object of the present invention to provide a method for dismantling a turbine rotating body that can be dismantled safely and quickly.

〔発明の構成〕[Structure of the invention]

(問題点を解決するための手段) 本発明は、外周にブレードが取付けられた複数のホイー
ルをロータに嵌着し、複数のホイールの両端からロータ
に一対のスリーブを嵌着して構成したタービン回転体の
解体方法であって、タービン回転体を車室から取出しロ
ータの両端部を受台に載置して各ホイールからブレード
を取外し、各ホイールの下側を水平に切断し、ロータを
略180”回転させて各ホイールの未切断の下側を水平
に切断し、ロータを略90°回転させて各ホイールおよ
び一対のスリーブの両側にロータ外周に到達する切込み
を入れ、ロータから各ホイールおよび一対のスリーブを
上下方向より取外すことを特徴としている。
(Means for Solving the Problems) The present invention provides a turbine constructed by fitting a plurality of wheels each having blades on the outer periphery onto a rotor, and fitting a pair of sleeves onto the rotor from both ends of the plurality of wheels. This is a method of disassembling a rotating body. The turbine rotating body is removed from the casing, both ends of the rotor are placed on a pedestal, the blades are removed from each wheel, the bottom of each wheel is cut horizontally, and the rotor is roughly removed. Rotate 180" to horizontally cut the uncut underside of each wheel. Rotate the rotor approximately 90 degrees to make cuts on both sides of each wheel and pair of sleeves that reach the outer circumference of the rotor. The feature is that the pair of sleeves can be removed from the top and bottom.

(作 用) 本発明千よれば、各ホイールおよび一対のスリーブをロ
ータから切断し取外すことによって、安全かつ迅速にタ
ービン回転体を分解することができる。
(Function) According to the present invention, the turbine rotating body can be safely and quickly disassembled by cutting and removing each wheel and the pair of sleeves from the rotor.

(実施例) 以下図面を参照して本発明の実施例について説明する。(Example) Embodiments of the present invention will be described below with reference to the drawings.

第1図乃至第10図は本発明によるタービン回転体の解
体方法の一実施例を示す図である。
1 to 10 are diagrams showing an embodiment of a method for dismantling a turbine rotating body according to the present invention.

第1図に示すように、タービン回転体は外周にブレード
1が取付けられた複数のホイール2をロータ3に嵌着し
、複数のホイール2の両端からロータ3に一対のスリー
ブ4を嵌着して構成されている。
As shown in FIG. 1, the turbine rotating body includes a plurality of wheels 2 having blades 1 attached to the outer periphery, which are fitted onto a rotor 3, and a pair of sleeves 4 which are fitted onto the rotor 3 from both ends of the plurality of wheels 2. It is composed of

このうちホイール2はブレード1を埋め込み支持するも
のであり、ロータ3に焼嵌めによって嵌着されている。
Of these, the wheel 2 embeds and supports the blade 1, and is fitted onto the rotor 3 by shrink fitting.

またホイール2とロータ3との間にはキー(支持せず)
が取付けられ、ホイール2とロータ3の回転方向のずれ
が防止されている。
Also, there is a key (not supported) between wheel 2 and rotor 3.
is attached to prevent the wheel 2 and rotor 3 from shifting in the rotational direction.

また、ロータ3に嵌着される一対のスリーブ4は、ロー
タ3とホイール2との間から流出する蒸気の漏洩を防ぐ
ものである。
Further, a pair of sleeves 4 fitted to the rotor 3 prevents leakage of steam flowing out from between the rotor 3 and the wheel 2.

次にタービン回転体の解体方法について説明する。Next, a method for disassembling the turbine rotating body will be explained.

まず第1図に示すように車室(図示せず)よりタービン
回転体を取り出し、ロータ3の両端部を受台に載置する
。次に第2図に示すように、各段のブレード1を全部各
ホイール2の外周から抜き出し、同時に受台の高さを低
くする。次に第3図に示すように、各ホイール2の下側
を水平に全部ガス切断する。次に第4図に示すように、
ロータ3を180@回転させる。次に第5図に示すよう
に、各ホイール2の下側(未切断側)を水平に全部ガス
切断する。次に第6図に示すようにロータ3を90°回
転させて各ホイール2の切断面を垂直方向に向けておく
。次に第7図に示すように各ホイール2に切断面の両側
からロータ3の軸線方向に切込み2aを入れる。この切
込み2aはロータ3の外周まで到達するよう酸素アーク
により溶断して形成する。次に第8図に示すように、一
対のスリーブ4にも両側から切込み2aの延長上に切込
み4aを入れる。この切込み4aもロータ3の外周まで
到達するよう酸素アークにより溶断して形成する。次に
第9図に示すように一対のスリーブ4をロータから上下
方向に取外し、続いて第10図に示すように各ホイール
2を全部ロータ3から上下方向に取外して、ロータ3の
み残すようにタービン回転体を分解する。
First, as shown in FIG. 1, the turbine rotating body is taken out of the casing (not shown), and both ends of the rotor 3 are placed on pedestals. Next, as shown in FIG. 2, all the blades 1 of each stage are extracted from the outer periphery of each wheel 2, and at the same time, the height of the pedestal is lowered. Next, as shown in FIG. 3, the entire lower side of each wheel 2 is gas-cut horizontally. Next, as shown in Figure 4,
Rotate rotor 3 180@. Next, as shown in FIG. 5, the entire lower side (uncut side) of each wheel 2 is horizontally gas cut. Next, as shown in FIG. 6, the rotor 3 is rotated 90 degrees so that the cut surface of each wheel 2 is oriented vertically. Next, as shown in FIG. 7, cuts 2a are made in each wheel 2 from both sides of the cut surface in the axial direction of the rotor 3. This cut 2a is formed by cutting by oxygen arc so as to reach the outer periphery of the rotor 3. Next, as shown in FIG. 8, cuts 4a are also made from both sides of the pair of sleeves 4 on the extension of the cuts 2a. This notch 4a is also formed by cutting by oxygen arc so as to reach the outer periphery of the rotor 3. Next, as shown in Fig. 9, remove the pair of sleeves 4 from the rotor in the vertical direction, and then, as shown in Fig. 10, remove all the wheels 2 from the rotor 3 in the vertical direction, leaving only the rotor 3. Disassemble the turbine rotating body.

このように本実施例によれば、安全かつ迅速にタービン
回転体を分解することができる。このため、それぞれに
分解された部材を除染することにより、とりわけキーを
含むホイール2とロータ3の嵌合部等を確実に除染でき
る。
As described above, according to this embodiment, the turbine rotating body can be disassembled safely and quickly. Therefore, by decontaminating each disassembled member, it is possible to reliably decontaminate especially the fitting portion between the wheel 2 and the rotor 3 including the key.

〔発明の効果〕〔Effect of the invention〕

本発明によれば、タービン回転体を安全かつ迅速に分解
することができ、それぞれに分解された部材を除染する
ことによってタービン回転体全体を確実に除染すること
ができる。このため、原子力発電所における使用済ター
ビン回転体を安全に廃棄することができる。
According to the present invention, the turbine rotating body can be disassembled safely and quickly, and by decontaminating each disassembled member, the entire turbine rotating body can be reliably decontaminated. Therefore, spent turbine rotors in nuclear power plants can be safely disposed of.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図乃至第10図は本発明によるタービン回転体の解
体方法の一実施例を示すタービン回転体の斜視図である
。 1・・・ブレード、2・・・ホイール、3・・・ロータ
、4・・・スリーブ、5・・・受台。 出願人代理人  佐  藤  −雄 弔 l 図 名2 図 第 72 第F3 図
1 to 10 are perspective views of a turbine rotor showing an embodiment of a method for dismantling a turbine rotor according to the present invention. 1...blade, 2...wheel, 3...rotor, 4...sleeve, 5...cradle. Applicant's agent Yusuke Sato l Figure name 2 Figure 72 Figure F3

Claims (1)

【特許請求の範囲】[Claims] 外周にブレードが取付けられた複数のホイールをロータ
に嵌着し、複数のホイールの両端からロータに一対のス
リーブを嵌着して構成したタービン回転体の解体方法に
おいて、タービン回転体を車室から取出しロータの両端
部を受台に載置して各ホイールからブレードを取外し、
各ホイールの下側を水平に切断し、ロータを略180°
回転させて各ホイールの未切断の下側を水平に切断し、
ロータを略90°回転させて各ホイールおよび一対のス
リーブの両側にロータ外周に到達する切込みを入れ、ロ
ータから各ホイールおよび一対のスリーブを上下方向よ
り取外すことを特徴とするタービン回転体の解体方法。
A method for dismantling a turbine rotating body constructed by fitting a plurality of wheels with blades attached to the outer periphery to a rotor, and fitting a pair of sleeves to the rotor from both ends of the plurality of wheels, in which the turbine rotating body is removed from a casing. Place both ends of the take-out rotor on the pedestal and remove the blades from each wheel.
Cut the bottom of each wheel horizontally and rotate the rotor approximately 180°.
Rotate to cut horizontally on the uncut underside of each wheel;
A method for disassembling a turbine rotating body, the method comprising rotating the rotor approximately 90 degrees, making cuts that reach the outer periphery of the rotor on both sides of each wheel and a pair of sleeves, and removing each wheel and a pair of sleeves from the rotor from above and below. .
JP29850086A 1986-12-15 1986-12-15 Overhauling method of turbine rotor Pending JPS63150401A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP29850086A JPS63150401A (en) 1986-12-15 1986-12-15 Overhauling method of turbine rotor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP29850086A JPS63150401A (en) 1986-12-15 1986-12-15 Overhauling method of turbine rotor

Publications (1)

Publication Number Publication Date
JPS63150401A true JPS63150401A (en) 1988-06-23

Family

ID=17860513

Family Applications (1)

Application Number Title Priority Date Filing Date
JP29850086A Pending JPS63150401A (en) 1986-12-15 1986-12-15 Overhauling method of turbine rotor

Country Status (1)

Country Link
JP (1) JPS63150401A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018111993A (en) * 2017-01-12 2018-07-19 株式会社ナベカヰ Demolition method of turbine facility
JP2020041541A (en) * 2018-09-06 2020-03-19 エトスエナジー・イタリア・ソシエタ・ペル・アチオニEthosenergy Italia S.P.A. Method for repairing rotor of multi-stage axial compressor of gas turbine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018111993A (en) * 2017-01-12 2018-07-19 株式会社ナベカヰ Demolition method of turbine facility
JP2020041541A (en) * 2018-09-06 2020-03-19 エトスエナジー・イタリア・ソシエタ・ペル・アチオニEthosenergy Italia S.P.A. Method for repairing rotor of multi-stage axial compressor of gas turbine

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