JPS6024431A - Testing method of rotary vibration of rotor having blade - Google Patents
Testing method of rotary vibration of rotor having bladeInfo
- Publication number
- JPS6024431A JPS6024431A JP58131835A JP13183583A JPS6024431A JP S6024431 A JPS6024431 A JP S6024431A JP 58131835 A JP58131835 A JP 58131835A JP 13183583 A JP13183583 A JP 13183583A JP S6024431 A JPS6024431 A JP S6024431A
- Authority
- JP
- Japan
- Prior art keywords
- air
- vibration
- steam
- rotor
- blades
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
-
- 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
- F01D21/00—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
- F01D21/003—Arrangements for testing or measuring
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
Description
【発明の詳細な説明】
本発明はタービン、プロワ等の翼の回転振動試験法に係
るものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rotary vibration testing method for blades of turbines, blowers, etc.
従来の大型蒸気タービン翼等の回転振動試験法につきそ
の概要を第１図により述べる。An outline of the conventional rotational vibration testing method for large steam turbine blades, etc. is described with reference to Fig. 1.
駆動用タービン１でテストロータ２を回転する。A test rotor 2 is rotated by a driving turbine 1.
テストロータ２は、軸受３および軸受架台４により支持
されている。The test rotor 2 is supported by a bearing 3 and a bearing frame 4.
テストロータ２の回転振動試験は、高速回転で行なわれ
るため、ウィンディージロスが生じ、翼７が加熱するた
め、それを防ぐ手段として、テストロータ２をケーシン
グ５に納め、配管６でエジェクタあるいはコンデンサ（
図示省略）と連結し、ケーシング５内を約７００ｍＨｇ
の真空度に保っている。The rotational vibration test of the test rotor 2 is performed at high speed rotation, which causes windage loss and heats the blades 7. To prevent this, the test rotor 2 is housed in a casing 5, and the piping 6 is connected to an ejector or condenser. (
(not shown), and the inside of the casing 5 is approximately 700 mHg.
It is maintained at a vacuum level of
そして、回転中の翼７をノズル８より吹き出す蒸気によ
シ加振して回転振動試験を行っていた。Then, the rotating blade 7 was vibrated by the steam blown out from the nozzle 8 to conduct a rotational vibration test.
上記した如く、従来の回転振動試験法は蒸気により加振
して行なっていたので、蒸気設備が必要であシ、蒸気の
だめの真空室内機器のぬれおよび危険を伴う欠点があっ
た。As mentioned above, the conventional rotary vibration test method was carried out by exciting with steam, which required steam equipment and had the disadvantage that the equipment in the vacuum chamber of the steam reservoir was wet and dangerous.
本発明は、仁のような従来法の欠点を除去せんとしてな
したもので、翼加振源として最も得やすく安全な空気を
利用したことを特徴とするものである。The present invention was developed in an attempt to eliminate the drawbacks of the conventional method, and is characterized by the use of air, which is the easiest to obtain and safest, as a source of blade vibration.
以下、本発明の実施例について第２図を参照して詳述す
る。Hereinafter, embodiments of the present invention will be described in detail with reference to FIG.
第２図において、符号９は駆動用モータ、１０はテスト
ロータ、１１は真空室、１２は配管、１３は翼、１４は
ノズル、１５は軸受、１６は軸受架台を示す。In FIG. 2, reference numeral 9 indicates a drive motor, 10 a test rotor, 11 a vacuum chamber, 12 piping, 13 a blade, 14 a nozzle, 15 a bearing, and 16 a bearing frame.
駆動用モータ９でテストロータ１０を回転する。A test rotor 10 is rotated by a drive motor 9.
テストロータ１０は軸受１５および軸受架台１６により
支持されている。The test rotor 10 is supported by a bearing 15 and a bearing frame 16.
ウィンディージロスによる翼１３の加熱を防ぐため、テ
ストロータ１０を真空室１１に納め、配管１２により、
真空ポンプ（図示しない）で真空室１１を高真空（７５
０〜７５９■）Ｔｇ ）に保つ。In order to prevent the blades 13 from heating due to windy losses, the test rotor 10 is placed in a vacuum chamber 11, and the piping 12 allows
The vacuum chamber 11 is brought to a high vacuum (75 cm) using a vacuum pump (not shown).
0 to 759■)Tg).
回転中の翼１３をノズル１４より吹き出す空気により加
振して、回転振動試験を行う。A rotational vibration test is performed by exciting the rotating blade 13 with air blown out from the nozzle 14.
従来のような蒸気加振では、蒸気設備が必要であり、真
空室１１０機器のぬれおよび真空ポンプのぬれが生じる
ため、本発明の加振試験法では、加振流体として空気を
使用する。Conventional steam excitation requires steam equipment and causes wetting of the vacuum chamber 110 equipment and wetting of the vacuum pump. Therefore, in the excitation test method of the present invention, air is used as the excitation fluid.
本発明の回転振動試験法を採用すると、蒸気設備が不要
であり、蒸気によらないため、機器がぬれる心配が無く
、加振源が空気であるので、入手が容易である。また、
空気であるため、危険性がなく、操作が簡単であること
および蒸気より比重が大きく、加振効果が大きいこと等
の効果を有すWhen the rotational vibration test method of the present invention is adopted, steam equipment is not required, and since it does not depend on steam, there is no risk of the equipment getting wet, and since the vibration source is air, it is easy to obtain. Also,
Because it is air, it is non-hazardous, easy to operate, has a higher specific gravity than steam, and has a greater vibration effect.
第１図は従来の回転振動試験法を説明するだめの断面図
、第２図は本発明試験法を説明する断面図である。
９・・駆動用モータ、１０・・テストロータ、１１・・
真空室、１２＠ｅ配管、１３・＠翼、１４・・ノズル、
１５・・軸受、１６・・軸受架台。FIG. 1 is a cross-sectional view for explaining the conventional rotational vibration test method, and FIG. 2 is a cross-sectional view for explaining the test method of the present invention. 9... Drive motor, 10... Test rotor, 11...
Vacuum chamber, 12@e piping, 13.@wings, 14.. nozzle,
15...Bearing, 16...Bearing stand.
Claims (1)
振動試験において、翼の加振源として空気を利用しこの
空気をノズルよシ圧力をもってロータ回転中の翼に吹き
つけ、該翼の振動試験を行々うこと全特徴とする、有翼
ロータの回転振動試験法。In vacuum indoor rotational vibration tests of steam turbines, gas turbines, blowers, etc., air is used as the vibration source for the blades, and this air is blown onto the rotating rotor blades with pressure through a nozzle to conduct vibration tests on the blades. A rotational vibration test method for winged rotors that has all the features.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58131835A JPS6024431A (en) | 1983-07-21 | 1983-07-21 | Testing method of rotary vibration of rotor having blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58131835A JPS6024431A (en) | 1983-07-21 | 1983-07-21 | Testing method of rotary vibration of rotor having blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6024431A true JPS6024431A (en) | 1985-02-07 |
Family
ID=15067209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58131835A Pending JPS6024431A (en) | 1983-07-21 | 1983-07-21 | Testing method of rotary vibration of rotor having blade |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6024431A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2730057A1 (en) * | 1995-01-31 | 1996-08-02 | Mtu Muenchen Gmbh | Arrangement for testing turbine blades |
| CN105510044A (en) * | 2015-12-31 | 2016-04-20 | 苏州东菱科技有限公司 | High-speed rotor blade flying-off test device and test method |
| KR20180035517A (en) * | 2016-09-29 | 2018-04-06 | 한국전력공사 | Spin test |
-
1983
- 1983-07-21 JP JP58131835A patent/JPS6024431A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2730057A1 (en) * | 1995-01-31 | 1996-08-02 | Mtu Muenchen Gmbh | Arrangement for testing turbine blades |
| CN105510044A (en) * | 2015-12-31 | 2016-04-20 | 苏州东菱科技有限公司 | High-speed rotor blade flying-off test device and test method |
| KR20180035517A (en) * | 2016-09-29 | 2018-04-06 | 한국전력공사 | Spin test |
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