JPS5929702A - Vibration damping construction of moving blade - Google Patents
Vibration damping construction of moving bladeInfo
- Publication number
- JPS5929702A JPS5929702A JP14014182A JP14014182A JPS5929702A JP S5929702 A JPS5929702 A JP S5929702A JP 14014182 A JP14014182 A JP 14014182A JP 14014182 A JP14014182 A JP 14014182A JP S5929702 A JPS5929702 A JP S5929702A
- Authority
- JP
- Japan
- Prior art keywords
- tie wire
- blade
- tie
- sleeve
- vibration damping
- 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
- F01D5/12—Blades
- F01D5/22—Blade-to-blade connections, e.g. for damping vibrations
- F01D5/24—Blade-to-blade connections, e.g. for damping vibrations using wire or the like
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】
ターボ機械の動翼には特に翼長が大きくなると振動が生
じ易い。この振動は当然有害であるので従来第1図に斜
視図で示すようなタイワイヤで翼同志をその翼列に亘っ
てつなぐ制振方式がよく用いられる。図で1は動翼、2
はタイワイヤの貫通孔、6はタイワイヤである。タイワ
イヤの制振作用は翼1とタイワイヤ3との間の摩擦によ
るものなので、タイワイヤの摩耗切断の対策として第2
図のようにワイヤ3の孔2の貫通部分3aのみを太くし
翼間部分3bは遠心力の増大を来さぬよう充分細くした
形状のタイワイヤが特許53−119773(特開57
−44705)で提案されている。しかしこのような太
い部分と細い部分とを交互にもつワイヤの製作は工費の
かさむ作業である。それで本発明はタイワイヤを第3図
のように細いワイヤ3に翼の貫通部分にスリーブ4をは
め、これをワイヤ3に溶接5する構造をとることとした
。あるいはタイワイヤ3に対する翼の孔には第4図のよ
うに翼にスリーブ6を溶接7し、タイワイヤ3はスリー
ブ6を通すこととした。DETAILED DESCRIPTION OF THE INVENTION Vibrations are likely to occur in the rotor blades of turbomachines, especially when the blade length becomes large. Since this vibration is of course harmful, conventionally a vibration damping method is often used in which the blades are connected across the blade cascade using tie wires as shown in the perspective view of FIG. In the figure, 1 is the rotor blade, 2
6 is a tie wire through hole, and 6 is a tie wire. Since the vibration damping effect of the tie wire is due to the friction between the blade 1 and the tie wire 3, the second measure against wear and tear of the tie wire is
As shown in the figure, a tie wire having a shape in which only the penetrating portion 3a of the wire 3 through the hole 2 is thick and the inter-blade portion 3b is sufficiently thin to prevent an increase in centrifugal force is disclosed in Patent No. 53-119773 (JP 57
-44705). However, manufacturing such a wire having alternating thick and thin portions is an expensive process. Therefore, in the present invention, as shown in FIG. 3, the tie wire is constructed such that a sleeve 4 is fitted onto a thin wire 3 at the portion through which the blade passes, and this is welded 5 to the wire 3. Alternatively, a sleeve 6 is welded 7 to the wing as shown in FIG. 4 in the hole in the wing for the tie wire 3, and the tie wire 3 is passed through the sleeve 6.
第3図のものでは第2図のもののタイワイヤの製作のよ
うに手数のかかることなくしかも第2図のものと同様の
効果が得られ、第4図のものではタイワイヤと振動部分
との接触面積が大きくなることにより、タイワイヤに対
する応力、摩耗の分散、さらには翼の孔から生ずる翼の
クランクの防止に役立つ。In the case of the one in Fig. 3, it is possible to obtain the same effect as the one in Fig. 2 without requiring the trouble of manufacturing the tie wire in the one in Fig. 2, and in the case of the one in Fig. 4, the contact area between the tie wire and the vibrating part. The increased .DELTA. is helpful in distributing stress and wear on the tie wires and also in preventing wing cranking resulting from the wing holes.
第1図は従来のターボ機械動翼の制振方式を示す斜視図
、第2図は従来のタイワイヤの動翼貫通部分のみを太く
した構造の、第6図は本発明のタイワイヤの動翼貫通部
にスリーブをかぶせてワイヤに溶接した構造の、第4図
は同動翼の孔にタイワイヤの通るスリーブを溶接した構
造の、何れも動翼の横断面図である。
1 動翼
2 タイワイヤの貫通孔
3 タイワイヤ
3a同孔貫通部分
3b同翼間部分
4.6 スリーブ
5.7 溶接
第玉 ′:42図
第3図 茅4図Fig. 1 is a perspective view showing a conventional vibration damping system for turbomachinery rotor blades, Fig. 2 shows a structure in which only the part of the conventional tie wire that penetrates the rotor blade is thickened, and Fig. 6 shows the tie wire of the present invention that penetrates the rotor blade. FIG. 4 is a cross-sectional view of a rotor blade in which a sleeve is placed over the rotor blade and welded to a wire, and FIG. 4 is a cross-sectional view of a rotor blade in which a sleeve through which a tie wire passes is welded to a hole in the rotor blade. 1 Moving blade 2 Tie wire through hole 3 Tie wire 3a through-hole portion 3b inter-blade portion 4.6 Sleeve 5.7 Welding ball ′: 42, 3, and 4
Claims (1)
その翼列を連ねるタイワイヤをおく制振構造において、
タイワイヤの翼の貫通個所にスリーブをかぶせてこれを
タイワイヤに溶接した構造。 2)ターボ機械動翼にロータ周方向の孔を穿ってこれに
その翼列を連ねるタイワイヤをおく構造において、上記
動翼の孔にタイワイヤの通るスリーブを溶接した構造。[Claims] 1) A vibration damping structure in which holes are bored in the rotor circumferential direction in the turbomachinery blades and tie wires connecting the blade rows are placed in the holes,
A structure in which a sleeve is placed over the point where the tie wire passes through the wing, and this is welded to the tie wire. 2) A structure in which a hole in the circumferential direction of the rotor is bored in a turbomachine rotor blade and a tie wire connecting the blade rows is placed in the hole, and a sleeve through which the tie wire passes is welded to the hole in the rotor blade.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14014182A JPS5929702A (en) | 1982-08-11 | 1982-08-11 | Vibration damping construction of moving blade |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14014182A JPS5929702A (en) | 1982-08-11 | 1982-08-11 | Vibration damping construction of moving blade |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5929702A true JPS5929702A (en) | 1984-02-17 |
Family
ID=15261824
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14014182A Pending JPS5929702A (en) | 1982-08-11 | 1982-08-11 | Vibration damping construction of moving blade |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5929702A (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54103909A (en) * | 1978-02-01 | 1979-08-15 | Hitachi Ltd | Moving vane connector |
JPS5554607A (en) * | 1978-10-16 | 1980-04-22 | Hitachi Ltd | Blade connecting apparatus |
JPS57137605A (en) * | 1981-02-19 | 1982-08-25 | Toshiba Corp | Moving blade of turbine |
-
1982
- 1982-08-11 JP JP14014182A patent/JPS5929702A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54103909A (en) * | 1978-02-01 | 1979-08-15 | Hitachi Ltd | Moving vane connector |
JPS5554607A (en) * | 1978-10-16 | 1980-04-22 | Hitachi Ltd | Blade connecting apparatus |
JPS57137605A (en) * | 1981-02-19 | 1982-08-25 | Toshiba Corp | Moving blade of turbine |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4710102A (en) | Connected turbine shrouding | |
JPS59134301A (en) | Blade assembly having pin fixing root part | |
JP3148772B2 (en) | Turbine blade repair | |
US4191508A (en) | Turbine rotor construction | |
JPS5929702A (en) | Vibration damping construction of moving blade | |
US2823895A (en) | Vibration damping blade | |
JPH0713442B2 (en) | Rotating blade ring for axial flow turbo machine | |
US6082970A (en) | Vibration attenuation arrangement for rotor blades | |
US3063674A (en) | Rotor construction and method | |
JP3682131B2 (en) | Turbine blade and its assembly method | |
JPH07332003A (en) | Turbine moving blade | |
US4025232A (en) | Turbomachine rotor assembly | |
JPH0598906A (en) | Rotor blade of steam turbine | |
JPH09209708A (en) | Stationary blade for rotary fluid machine | |
JP2001038525A (en) | Rotary saw | |
JPS6143928Y2 (en) | ||
JPS5943902A (en) | Structure of vane having crack at its root | |
JPH11294102A (en) | Steam turbine bucket | |
JPS5924244B2 (en) | Tie wire mounting structure | |
JPS62206202A (en) | Moving blade for turbine | |
JPS6045285B2 (en) | Moving blade coupling device | |
JPS6212803Y2 (en) | ||
JPH07127645A (en) | Retainer for roller bearing | |
JPS6069211A (en) | Radial turbine | |
JPH09324603A (en) | Turbine rotor blade of high speed rotary machine |