JPS59110804A - Method of fixing rotor root on actual machine static vibration test of steam turbine rotor - Google Patents
Method of fixing rotor root on actual machine static vibration test of steam turbine rotorInfo
- Publication number
- JPS59110804A JPS59110804A JP22023682A JP22023682A JPS59110804A JP S59110804 A JPS59110804 A JP S59110804A JP 22023682 A JP22023682 A JP 22023682A JP 22023682 A JP22023682 A JP 22023682A JP S59110804 A JPS59110804 A JP S59110804A
- Authority
- JP
- Japan
- Prior art keywords
- rotor
- root
- blade
- steam turbine
- groove
- 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
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/04—Antivibration arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、タービンディスクの翼溝部に翼根を係合させ
た蒸気タービン粱翼に、タッピング用ハンマにて衝Ｓを
与えて行なう静的振動試験に捺して、翼根を翼溝部に固
定させる方法の改良に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention is based on a static vibration test in which a force S is applied with a tapping hammer to a steam turbine blade whose blade root is engaged with a blade groove of a turbine disk. This invention relates to an improvement in the method of fixing roots to the wing groove.
蒸気タービンの動翼は、タービンディスクの翼溝部に翼
根に係合させて取付けられている。第１図は従来の取付
状態を示したもので、／バタービンディスク、２は動翼
であり、その稚根３がタービンディスク／の翼溝部ｑに
係合されている。このように取付けられた状態で、動翼
２をタッピング用ハンマで衝撃を与えて静的振動試験を
行なう場合、翼溝部ｑに接着剤を注入して、翼根３を固
定するようにしていた。The rotor blades of the steam turbine are attached to the blade grooves of the turbine disk so as to engage with the blade roots. FIG. 1 shows a conventional installation state, in which a /butter turbine disk, 2 is a rotor blade, and its young root 3 is engaged with a blade groove q of the turbine disk /. When a static vibration test was performed by applying an impact to the rotor blade 2 with a tapping hammer while it was installed in this way, adhesive was injected into the blade groove q to fix the blade root 3. .
しかし多数の勘Ｒ２に対して、接着剤の注入量や浸透量
等の注入条件に微妙な違いを生ずるので、そのため振動
試験によって測定される振動数にばらつきを生じていた
。また、接着剤の注入は、各動翼コに対し順次行なって
いくので、試験のための準備に長時間を要する等の欠点
があった。However, since there are slight differences in the injection conditions such as the amount of adhesive to be injected and the amount of penetration of the adhesive for a large number of R2s, this has caused variations in the vibration frequencies measured by the vibration test. Furthermore, since the adhesive is injected into each rotor blade in turn, there is a drawback that preparation for the test requires a long time.
本発明はこのような従来の欠点を除去して、動翼の固定
を短時間で均一に行ない得るような方法を提供し、以っ
て試験の精度を向上することを目的としてなされたもの
である。The present invention has been made with the aim of eliminating these conventional drawbacks and providing a method that can uniformly fix rotor blades in a short time, thereby improving the accuracy of testing. be.
以下本発明の一実施例を第２図ないし第４図を参照して
詳細に説明する。An embodiment of the present invention will be described in detail below with reference to FIGS. 2 to 4.
第２図は本発明を実施するのに適するように加工したタ
ービンディスクの・刈溝部を示したもので、タービンデ
ィスク／、動翼コ、翼根３は第１図と同じであるが、翼
溝部／／だけが第１図と異なり、翼根３の最下部と翼溝
部／ｌの底面との間に隙間／コが形成されている。Figure 2 shows the cutting groove of a turbine disk that has been machined to suit the present invention.The turbine disk, rotor blade, and blade root 3 are the same as in Figure 1; Only the groove portion // is different from FIG. 1, and a gap is formed between the lowest part of the blade root 3 and the bottom surface of the blade groove portion /l.
第３図は本発明に使用される油田ジヤツキの一例を示し
たものであり、／３に油田調整ポンプ、ｌｌＩは油田配
管、／３は配管／ｑに分岐して接続された油圧ジヤツキ
、／Ａは油田ジヤツキのシリンダ、／７はブルドン管で
ある。FIG. 3 shows an example of an oil field jack used in the present invention, where /3 is an oil field adjustment pump, llI is an oil field pipe, /3 is a hydraulic jack branched and connected to pipe /q, / A is an oil field jack cylinder, and /7 is a Bourdon tube.
第９図に蒸気タービン動翼の実機静的振動試験の方法を
説明する図であり、タービンディスク／の翼溝部／／に
係合した動翼コの先端に振動ピックアラ７’ ／ ｇ
′ｆ！：取看し、このピックアップ／ｇｄリード線／９
によシ周波数分析器−〇に接続され、更に周波数分析器
２０はＸ−Ｙレコーダ２／に接続される。一方、翼根３
の最下部と翼溝部ｌ／の底面との間に形成されている隙
間／λには、油圧ジヤツキ７．５を挿入する。そして油
田調整ポンプ／３を動作させて、油田ジヤツキ／、Ｓ′
へ油８Ｅヲ送り込み、そのシリンダ／乙によって４根３
を押し上げて固定する。このときの押上刃はブルドン管
／りを見ながら油田調帯ポンプによって調整する。FIG. 9 is a diagram illustrating a method of actual machine static vibration testing of steam turbine rotor blades, in which a vibration picker 7'/g is attached to the tip of the rotor blade engaged with the blade groove portion of the turbine disk.
'f! :Torikashi, this pickup/gd lead wire/9
The frequency analyzer 20 is further connected to the X-Y recorder 2/. On the other hand, wing root 3
A hydraulic jack 7.5 is inserted into the gap /λ formed between the lowermost part of the blade and the bottom surface of the blade groove l/. Then, operate the oil field adjustment pump /3 and oil field adjustment pump /, S'
Send oil 8E to the cylinder / O and 4 roots 3
Push up to secure. At this time, the push-up blade is adjusted using an oil field adjustment pump while watching the Bourdon tube.
このようにして翼根３を固定した後、従来とおり動翼２
をタッピング用ハンマ２２でタッピングし、このとき振
動ピックアップ／ｇからｉ斗られる信号を周波数分析器
２０で分析し、Ｘ−Ｙレコーダ２１に記録する。After fixing the blade root 3 in this way, the rotor blade 2 is fixed as before.
is tapped with a tapping hammer 22, and the signal received from the vibration pickup/g at this time is analyzed by a frequency analyzer 20 and recorded on an XY recorder 21.
従来の実機静的振動試験にあっては、翼溝部に接着剤を
流し込んで翼根全固定していたので、多数の動翼毎に固
定条件を均一にすることが困難であったが、本発明によ
れば、全ての動翼を同一の条件で固定することができる
ため正確な測定値を得ることができる。また固定のため
の作業も短時間で行なうことができ作業効率も向上する
等の効果を奏することができる。In conventional static vibration tests on actual machines, adhesive was poured into the blade grooves to completely fix the blade roots, which made it difficult to uniformize the fixing conditions for each of the many rotor blades. According to the invention, since all rotor blades can be fixed under the same conditions, accurate measurement values can be obtained. Further, the work for fixing can be done in a short time, and the work efficiency can be improved.
第１図はタービンディスクの翼溝部に８１０翼の翼根を
取付けた従来の状態を示した断面図、第２図は本発明を
実施するのに適した翼溝部への翼根の取付状態を示した
断面図、第３図は本発明に使用される油圧ジヤツキの一
例を示した図、第９図は本発明の一実施例を説明するた
めに示した図である。
／・・タービンディスク、λ＠−勤１Ｌ、３・拳翼根、
／／・・翼溝部、１２・・隙間、／３・・油田調整ポン
プ、ｌｌＩ・・油田配管、／３・・油圧シリンダ。Fig. 1 is a sectional view showing a conventional state in which the blade root of an 810 blade is attached to the blade groove of a turbine disk, and Fig. 2 shows a state in which the blade root is attached to the blade groove suitable for implementing the present invention. The sectional view shown in FIG. 3 is a diagram showing an example of a hydraulic jack used in the present invention, and FIG. 9 is a diagram shown for explaining one embodiment of the present invention. /...Turbine disk, λ@-Kin 1L, 3.Fist blade root,
//...Blade groove, 12...Gap, /3...Oil field adjustment pump, llI...Oil field piping, /3...Hydraulic cylinder.
Claims (1)
ビン動翼に、タッピング用ハンマにて衝撃を与えて行な
う静的振動試験に際し、予め形成されている前記翼根の
最下部と翼溝部底面との間の隙間に油圧ジヤツキ全挿入
し、この油田ジヤツキに油圧を加えることによって前記
翼根ヲー床な力で押し上げて前記翼溝部に固定すること
を特徴とする、蒸気タービン動翼の実機静的振動試、験
時における翼根の固定方法。During a static vibration test in which a impact is applied with a tapping hammer to a steam turbine rotor blade in which the blade root is engaged with the blade broom part of the turbine disk, the lowermost part of the blade root and the blade groove part which have been formed in advance are tested. An actual steam turbine rotor blade, characterized in that a hydraulic jack is fully inserted into the gap between the blade and the bottom surface, and by applying hydraulic pressure to the oil field jack, the blade root is pushed up with a gentle force and fixed in the blade groove. Static vibration test, how to fix the blade root during the test.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22023682A JPS59110804A (en) | 1982-12-17 | 1982-12-17 | Method of fixing rotor root on actual machine static vibration test of steam turbine rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22023682A JPS59110804A (en) | 1982-12-17 | 1982-12-17 | Method of fixing rotor root on actual machine static vibration test of steam turbine rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59110804A true JPS59110804A (en) | 1984-06-26 |
Family
ID=16748021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22023682A Pending JPS59110804A (en) | 1982-12-17 | 1982-12-17 | Method of fixing rotor root on actual machine static vibration test of steam turbine rotor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59110804A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014222068A (en) * | 2014-08-12 | 2014-11-27 | 三菱日立パワーシステムズ株式会社 | Fixing jig |
| JP2015028340A (en) * | 2014-08-12 | 2015-02-12 | 三菱日立パワーシステムズ株式会社 | Fixing jig |
| JP2015086749A (en) * | 2013-10-29 | 2015-05-07 | 三菱重工業株式会社 | Method for fixing moving blade |
| GB2543526A (en) * | 2015-10-20 | 2017-04-26 | Rolls Royce Plc | Blade positioning |
-
1982
- 1982-12-17 JP JP22023682A patent/JPS59110804A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015086749A (en) * | 2013-10-29 | 2015-05-07 | 三菱重工業株式会社 | Method for fixing moving blade |
| JP2014222068A (en) * | 2014-08-12 | 2014-11-27 | 三菱日立パワーシステムズ株式会社 | Fixing jig |
| JP2015028340A (en) * | 2014-08-12 | 2015-02-12 | 三菱日立パワーシステムズ株式会社 | Fixing jig |
| GB2543526A (en) * | 2015-10-20 | 2017-04-26 | Rolls Royce Plc | Blade positioning |
| US10160086B2 (en) | 2015-10-20 | 2018-12-25 | Rolls-Royce Plc | Blade positioning |
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