CN202788947U - Triplet movable vane of turbine - Google Patents
Triplet movable vane of turbine Download PDFInfo
- Publication number
- CN202788947U CN202788947U CN 201220374074 CN201220374074U CN202788947U CN 202788947 U CN202788947 U CN 202788947U CN 201220374074 CN201220374074 CN 201220374074 CN 201220374074 U CN201220374074 U CN 201220374074U CN 202788947 U CN202788947 U CN 202788947U
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- groove
- moving vane
- vane
- movable vane
- shaped
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Abstract
The utility model relates to a triplet movable vane of a turbine. The movable vane comprises a first movable vane, a second movable vane and a third movable vane. Each movable vane is formed by a surrounding belt, a vane portion and a T-shaped vane root. A slope opening is respectively arranged on the back faces of the surrounding belt and the bottom of the T-shaped vane root of the first movable vane. A slope opening is respectively arranged on the inner faces and the back faces of the surrounding belt and the bottom of the T-shaped vane root of the second movable vane. A slope opening is respectively arranged on the inner faces of the surrounding belt and the bottom of the T-shaped vane root of the third movable vane. The first movable vane, the second movable vane and the third movable vane are sequentially connected through the slope openings in welding mode. The movable vane increases anti-bending coefficient, greatly reduces dynamic stress of movable vanes in a group and remarkably improves vane strength and rigidity compared with a single T-shaped vane root movable vane with identical size.
Description
Technical field
The utility model relates to a kind of turbine blade, belongs to the Machining Technology field.
Background technique
T-shaped blade root generally is used for the short moving vane of steam turbine, it is simple in structure, processing, easy to assembly, but for the moving vane under the complicated operating conditions, such as front and back extraction opening, moving vane that working conditions change is large are arranged, disturbing factor is many, excitation force is large, dynamic stress that blade bears is larger, and the narrowest section of especially T-shaped blade root bears the dynamic stress maximum, and blade has the danger of damage to the terminal.The scheme of the present invention's design has designed a kind of moving vane in groups, has both made simple, easy to assembly, strengthen again intensity and the rigidity of moving vane, change the natural frequency of vibration of moving vane, reduce steam flow to the dynamic stress of moving vane, effectively prevent the generation of leaf destruction accident.
The model utility content
The purpose of this utility model provides a kind of moving vane simple, easy to assembly of making, and the intensity of reinforced blade and rigidity enable effectively to prevent leaf destruction.
Technological scheme: steam turbine triplet moving vane of the present utility model, comprise the first moving vane, the second moving vane and the 3rd moving vane, described the first moving vane, the second moving vane and the 3rd moving vane all are made of shroud, blade profile part and T-shaped blade root from top to bottom, described shroud is for being tabular, and described airfoil portion is divided into the uniform section molded line; The shroud back side of described the first moving vane and T-shaped blade root bottom rear are respectively equipped with the first groove and the second groove, the shroud inner face of described the second moving vane, T-shaped blade root bottom inner face, the shroud back side and T-shaped blade root bottom rear are respectively equipped with the 3rd groove, the 4th groove, the 5th groove and the 6th groove, and the shroud inner face of described the 3rd moving vane and T-shaped blade root bottom inner face are respectively equipped with the 7th groove and the 8th groove; Described the first moving vane and the second moving vane are welded to connect at the first groove and the 3rd groove place, the second cut and the 4th groove place respectively, and described the second moving vane and the 3rd moving vane are welded to connect at the 5th groove and the 7th groove place, the 6th groove and the 8th groove place respectively.
As preferably, described the first groove and the 3rd groove, the second cut and the 4th groove, the 5th groove and the 7th groove, the 6th groove and the 8th groove all surround U-shaped groove.Pass through U-shaped groove welding between the first moving vane, the second moving vane and the 3rd moving vane.U-shaped groove welding junction is larger, and easier through welding welds more firm.
Advantage of the present utility model: triplet's moving vane group of T-shaped blade root is with respect to unidimensional single T-shaped blade root moving vane, the strength and stiffness of blade are significantly improved, ability of anti-deformation is strengthened, and vibration frequency is also effectively changed, and has reduced the dynamic stress of steam flow to moving vane.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is plan view of the present utility model.
Fig. 3 is the right elevation of Fig. 2.
Fig. 4 is the right elevation of Fig. 3.
Embodiment
Further introduce the utility model below in conjunction with accompanying drawing.
As shown in Figures 1 to 4, steam turbine triplet moving vane of the present utility model, comprise the first moving vane 1, the second moving vane 2 and the 3rd moving vane 3, described the first moving vane, the second moving vane and the 3rd moving vane all are made of shroud 4, blade profile part 5 and T-shaped blade root 6 from top to bottom, described shroud 4 is tabular, and described blade profile part 5 is the uniform section molded line; The back side shroud of described the first moving vane 1 and the back side T-shaped blade root bottom is respectively equipped with the first groove 7 and the second groove 8, the T-shaped blade root of inner face shroud, the inner face of described the second moving vane 2 bottom, the T-shaped blade root of back side shroud and back side bottom are respectively equipped with the 3rd groove 9, the 4th groove 10, the 5th groove 11 and the 6th groove 12, and the T-shaped blade root of the inner face shroud of described the 3rd moving vane and inner face bottom is respectively equipped with the 7th groove 13 and the 8th groove 14; Described the first moving vane 1 and the second moving vane 2 are welded to connect at the first groove 7 and the 3rd groove 9 places, the second cut 8 and the 4th groove place 10 respectively, and described the second moving vane 2 and the 3rd moving vane 3 are welded to connect at the 5th groove 11 and the 7th groove place 13, the 6th groove 12 and the 8th groove place 14 respectively.
In the present embodiment, described the first groove 7 and the 3rd groove 9, the second cut 8 and the 4th groove 10, the 5th groove 11 and the 7th groove 13, the 6th groove 12 and the 8th groove 14 all surround U-shaped groove.Pass through U-shaped groove welding between the first moving vane 1, the second moving vane 2 and the 3rd moving vane 3.
Preparation method of the present utility model: go out the moving vane of the required undressed T-shaped blade root of whole circle by the roughing of finished product size elder generation, moving vane is processed respectively three kinds of moving vanes with different grooves again: the shroud back side and blade root bottom rear are provided with the moving vane that the back side of the back side of moving vane, shroud of groove and inner face and blade root bottom and moving vane, shroud inner face and blade root bottom inner face that inner face is equipped with groove are provided with groove.Three one group of assembly weldings of the moving vane that has different grooves are formed triplet's moving vane together, then accurately process the T-shaped blade root of blade by the finished product size, and get final product.
Claims (2)
1. steam turbine triplet moving vane, it is characterized in that, comprise the first moving vane, the second moving vane and the 3rd moving vane, described the first moving vane, the second moving vane and the 3rd moving vane all are made of shroud, blade profile part and T-shaped blade root from top to bottom, described shroud is for being tabular, and described airfoil portion is divided into the uniform section molded line; The shroud back side of described the first moving vane and T-shaped blade root bottom rear are respectively equipped with the first groove and the second groove, the shroud inner face of described the second moving vane, T-shaped blade root bottom inner face, the shroud back side and T-shaped blade root bottom rear are respectively equipped with the 3rd groove, the 4th groove, the 5th groove and the 6th groove, and the shroud inner face of described the 3rd moving vane and T-shaped blade root bottom inner face are respectively equipped with the 7th groove and the 8th groove; Described the first moving vane and the second moving vane are welded to connect at the first groove and the 3rd groove place, the second cut and the 4th groove place respectively, and described the second moving vane and the 3rd moving vane are welded to connect at the 5th groove and the 7th groove place, the 6th groove and the 8th groove place respectively.
2. steam turbine triplet moving vane as claimed in claim 1, it is characterized in that: described the first groove and the 3rd groove, the second cut and the 4th groove, the 5th groove and the 7th groove, the 6th groove and the 8th groove all surround U-shaped groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220374074 CN202788947U (en) | 2012-07-31 | 2012-07-31 | Triplet movable vane of turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220374074 CN202788947U (en) | 2012-07-31 | 2012-07-31 | Triplet movable vane of turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202788947U true CN202788947U (en) | 2013-03-13 |
Family
ID=47816222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220374074 Expired - Lifetime CN202788947U (en) | 2012-07-31 | 2012-07-31 | Triplet movable vane of turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202788947U (en) |
-
2012
- 2012-07-31 CN CN 201220374074 patent/CN202788947U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130313 |
|
| CX01 | Expiry of patent term |