JPS63193701U - - Google Patents
Info
- Publication number
- JPS63193701U JPS63193701U JP8575187U JP8575187U JPS63193701U JP S63193701 U JPS63193701 U JP S63193701U JP 8575187 U JP8575187 U JP 8575187U JP 8575187 U JP8575187 U JP 8575187U JP S63193701 U JPS63193701 U JP S63193701U
- Authority
- JP
- Japan
- Prior art keywords
- low
- pressure turbine
- pressure
- turbine
- steam turbine
- 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
- 238000010586 diagram Methods 0.000 description 3
Description
第１図は本考案による蒸気タービンの２車室か
らなる低圧タービンの一部概略段面図、第２図は
動翼の振動モードにおける振動方向を示す図、第
３図はその低圧タービン主体モードの固有振動数
及び共振周波数との大小関係の３つのケースを示
す比較図、第４図はその殊に２のケースに相当す
る低圧最終段の振動応答の変化（減少）を示す図
、第５図は本考案及び従来の蒸気タービンの代表
的な配置図、第６図、第７図は夫々低圧最終段の
一部正面図及び側面図、第８図は低圧最終段動翼
の典型的なキヤンベル線図である。
１，２……２車室、３……低圧タービン、４…
…シヤフト、８……単独翼（又は動翼）、９……
（低圧タービン）中央部。
Fig. 1 is a partial schematic view of a low-pressure turbine consisting of two casings of a steam turbine according to the present invention, Fig. 2 is a diagram showing the vibration direction in the vibration mode of the rotor blade, and Fig. 3 is the main mode of the low-pressure turbine. Figure 4 is a diagram showing the change (decrease) in the vibration response of the low-pressure final stage corresponding to case 2. Figures 6 and 7 are partial front and side views of the low-pressure final stage, respectively, and Figure 8 is a typical layout of the low-pressure final stage rotor blades. It is a Campbell diagram. 1, 2...2 casing, 3...low pressure turbine, 4...
...Shaft, 8...Single blade (or rotor blade), 9...
(Low pressure turbine) central part.
Claims (1)
ービンにおいて、低圧タービンの低圧最終段に植
え込む動翼を単独翼の１次モード振動数の高いも
のと低いものとに２分する構造及び上記低圧ター
ビン中央部のシヤフト径を異ならせる構造の少な
くとも一方の構造により、低圧タービン主体モー
ドの固有振動数を共振周波数から離すようにした
ことを特徴とする蒸気タービン。 In a steam turbine in which the low-pressure turbine is configured with two casings, a structure in which the rotor blades installed in the low-pressure final stage of the low-pressure turbine is divided into two individual blades with high and low primary mode frequencies, and the low-pressure turbine described above A steam turbine characterized in that the natural frequency of the low-pressure turbine main mode is separated from the resonance frequency by at least one structure in which the shaft diameters of the central portion are different.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8575187U JPS63193701U (en) | 1987-06-03 | 1987-06-03 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8575187U JPS63193701U (en) | 1987-06-03 | 1987-06-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63193701U true JPS63193701U (en) | 1988-12-13 |
Family
ID=30941442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8575187U Pending JPS63193701U (en) | 1987-06-03 | 1987-06-03 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63193701U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02286802A (en) * | 1989-04-17 | 1990-11-27 | General Electric Co <Ge> | Rotor assembly for gas turbine engine |
-
1987
- 1987-06-03 JP JP8575187U patent/JPS63193701U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02286802A (en) * | 1989-04-17 | 1990-11-27 | General Electric Co <Ge> | Rotor assembly for gas turbine engine |
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