CN2828320Y - Steam turbine large enthalpy drop reaction moving vane - Google Patents
Steam turbine large enthalpy drop reaction moving vane Download PDFInfo
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- CN2828320Y CN2828320Y CN 200520021489 CN200520021489U CN2828320Y CN 2828320 Y CN2828320 Y CN 2828320Y CN 200520021489 CN200520021489 CN 200520021489 CN 200520021489 U CN200520021489 U CN 200520021489U CN 2828320 Y CN2828320 Y CN 2828320Y
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Abstract
The utility model relates to a steam turbine large enthalpy drop reaction blade which is an improvement of a structure of the steam turbine blade. The purpose of the utility model is to solve the problems that in the existing large enthalpy drop blade, a structure is not completely reasonable; the bending resisting ability of a section is poor, and attack angle loss and secondary flow loss are larger. The position between two adjacent sections of the utility model relatively twists, and the geometric air inlet angle of the working part 2 of the blade is 49.5 DEG to 47.19 DEG to 67.52 DEG from an intermediate body to a surrounding belt. The geometric air outlet angle of the working part 2 of the blade is 22.62 DEG to 23.88 DEG to 21.32 DEG to 22.1 DEG to 20.96DEG from the intermediate body to the surrounding belt. The mounting and rotating angle of the working part 2 of the blade is 64.5 DEG to 37.18 DEG from the intermediate body to the surrounding belt, and the height of the working part 2 of the blade is 30-300 mm. The utility model raises stage enthalpy drop, so the stage reaction degree is reduced from 45-50% of the existing reaction machine set to 40-45%. The utility model has the advantages that the bending resisting ability of the section is high, and the attack angle loss and the secondary flow loss are reduced to ensure that the machine set safely runs with high efficiency.
Description
Technical field:
The utility model relates to a kind of improvement of turbine blade structure.
Background technique:
The existing pressing cylinder 600MW of senior middle school steam turbine set exists that progression is many, the blade number of elements is many, axial length, problem that manufacture cost is high.The length of using progression, blade number of elements and rotor that big enthalpy drop blade can make steam turbine set reduces, and attracts tremendous attention.Though big enthalpy drop blade can make the length of progression, blade number of elements and the rotor of steam turbine set reduce, reduce manufacture cost, but at present the research to big enthalpy drop blade also is in the starting stage, and existing big enthalpy drop blade exists also that structure is unreasonable, the cross section bending resistance is poor, loss of incidence and the bigger problem of secondary flow loss.
The model utility content:
The purpose of this utility model is that the structure that existing big enthalpy drop blade exists is unreasonable, the cross section bending resistance is poor in order to solve, loss of incidence and the bigger problem of secondary flow loss, the big enthalpy drop reactionary style of a kind of steam turbine moving vane is provided, the utlity model has cross section bending resistance height, reduce the loss of merit angle and secondary flow loss, the characteristics of raising unit operation efficient.The utility model is made up of shroud 1, blade working part 2, intermediate 3, blade root 4; Fixedly connected with the upper end of blade working part 2 in the lower end of shroud 1, fixedly connected with the upper end of intermediate 3 in the lower end of blade working part 2, fixedly connected with the upper end of blade root 4 in the lower end of intermediate 3, the molded lines of blade working part 2 is the variable cross section twisted blade, along blade height sectional shape difference, have relatively between adjacent two sections and reverse, the geometry inlet angles of blade working part 2 are 49.5 ° → 47.19 ° → 67.52 ° by intermediate to shroud; How much flow outlet angles of blade working part 2 are 22.62 ° → 23.88 ° → 21.32 ° → 22.1 ° → 20.96 ° by intermediate to shroud; The peace corner of blade working part 2 is 64.5 °～37.18 ° by intermediate to shroud; The height of blade working part 2 is 30～300mm.The utility model has improved a level enthalpy drop, makes grade degree of reaction be reduced to 40～45% by 45～50% of existing reactionary style unit, has cross section bending resistance height, has reduced the loss of merit angle and secondary flow loss, the advantage of the efficient operation of assurance unit safety.
Description of drawings:
Fig. 1 is an overall structure schematic representation of the present utility model, and Fig. 2 is the superimposed schematic representation of blade profile line of the present utility model.
Embodiment:
Embodiment one: (referring to Fig. 1, Fig. 2) present embodiment is made up of shroud 1, blade working part 2, intermediate 3, blade root 4; Fixedly connected with the upper end of blade working part 2 in the lower end of shroud 1, fixedly connected with the upper end of intermediate 3 in the lower end of blade working part 2, fixedly connected with the upper end of blade root 4 in the lower end of intermediate 3, the molded lines of blade working part 2 is the variable cross section twisted blade, along blade height sectional shape difference, have relatively between adjacent two sections and reverse, the geometry inlet angles of blade working part 2 are 49.5 ° → 47.19 ° → 67.52 ° by intermediate to shroud; How much flow outlet angles of blade working part 2 are 22.62 ° → 23.88 ° → 21.32 ° → 22.1 ° → 20.96 ° by intermediate to shroud; The peace corner of blade working part 2 is 64.5 °～37.18 ° by intermediate to shroud; The height of blade working part 2 is 30～300mm.The geometric data in the variable cross section twisted blade cross section of blade working part 2 is: the relative leaf height in A-A molded lines cross section number is 0, and how much inlet angles are 49.5 °, and how much flow outlet angles are 22.62 °, and the peace corner is 64.5 °; The relative leaf height in B-B molded lines cross section number is 12.5%, and how much inlet angles are 47.36 °, and how much flow outlet angles are 23.88 °, and the peace corner is 61.43 °; The relative leaf height in C-C molded lines cross section number is 25%, and how much inlet angles are 47.19 °, and how much flow outlet angles are 22.73 °, and the peace corner is 58.44 °; The relative leaf height in D-D molded lines cross section number is 37.5%, and how much inlet angles are 49.3 °, and how much flow outlet angles are 22.35 °, and the peace corner is 55.41 °; The relative leaf height in E-E molded lines cross section number is 50%, and how much inlet angles are 51.32 °, and how much flow outlet angles are 21.32 °, and the peace corner is 52.36 °; The relative leaf height in F-F molded lines cross section number is 62.5%, and how much inlet angles are 52.82 °, and how much flow outlet angles are 22.09 °, and the peace corner is 49.3 °; The relative leaf height in G-G molded lines cross section number is 75%, and how much inlet angles are 55.49 °, and how much flow outlet angles are 22.1 °, and the peace corner is 45.5 °; The relative leaf height in H-H molded lines cross section number is 87.5%, and how much inlet angles are 59.58 °, and how much flow outlet angles are 21.78 °, and the peace corner is 41.22 °; The relative leaf height in J-J molded lines cross section number is 100%, and how much inlet angles are 67.52 °, and how much flow outlet angles are 20.96 °, and the peace corner is 37.18 °.The corresponding relation of each cross section geometric data of variable cross section twisted blade sees Table 1:
Table 1
| Molded lines cross section number | ?A-A | ?B-B | ?C-C | ?D-D | ?E-E | ?F-F | ?G-G | ?H-H | ?J-J |
| Relative leaf height | ?0 | ?0.125 | ?0.25 | ?0.375 | ?0.5 | ?0.625 | ?0.75 | ?0.875 | ?1 |
| How much inlet angles | 49.50 | ?47.36 | ?47.19 | ?49.30 | ?51.32 | ?52.82 | ?55.49 | ?59.58 | ?67.52 |
| How much flow outlet angles | 22.62 | ?23.88 | ?22.73 | ?22.35 | ?21.32 | ?22.09 | ?22.10 | ?21.78 | ?20.96 |
| The peace corner | 64.50 | ?61.43 | ?58.44 | ?55.41 | ?52.36 | ?49.31 | ?45.50 | ?41.22 | ?37.18 |
Embodiment two: the height of (referring to Fig. 1) present embodiment blade working part 2 is 60mm.Other composition is identical with embodiment one with annexation.
Embodiment three: the height of (referring to Fig. 1) present embodiment blade working part 2 is 90mm.Other composition is identical with embodiment one with annexation.
Embodiment four: the height of (referring to Fig. 1) present embodiment blade working part 2 is 120mm.Other composition is identical with embodiment one with annexation.
Embodiment five: the height of (referring to Fig. 1) present embodiment blade working part 2 is 150mm.Other composition is identical with embodiment one with annexation.
Embodiment six: the height of (referring to Fig. 1) present embodiment blade working part 2 is 200mm.Other composition is identical with embodiment one with annexation.
Embodiment seven: the height of (referring to Fig. 1) present embodiment blade working part 2 is 280mm.Other composition is identical with embodiment one with annexation.
Claims (8)
1, the big enthalpy drop reactionary style of a kind of steam turbine moving vane, it is made up of shroud (1), blade working part (2), intermediate (3), blade root (4); Fixedly connected with the upper end of blade working part (2) in the lower end of shroud (1), fixedly connected with the upper end of intermediate (3) in the lower end of blade working part (2), fixedly connected with the upper end of blade root (4) in the lower end of intermediate (3), the molded lines of blade working part (2) is the variable cross section twisted blade, along blade height sectional shape difference, have relatively between adjacent two sections and reverse, it is characterized in that the geometry inlet angles of blade working part (2) are 49.5 ° → 47.19 ° → 67.52 ° by intermediate to shroud; How much flow outlet angles of blade working part (2) are 22.62 ° → 23.88 ° → 21.32 ° → 22.1 ° → 20.96 ° by intermediate to shroud; The peace corner of blade working part (2) is 64.5 °～37.18 ° by intermediate to shroud; The height of blade working part (2) is 30～300mm.
2, the big enthalpy drop reactionary style of steam turbine according to claim 1 moving vane, the geometric data that it is characterized in that the variable cross section twisted blade cross section of blade working part (2) is: the relative leaf height in A-A molded lines cross section number is 0, how much inlet angles are 49.5 °, how much flow outlet angles are 22.62 °, and the peace corner is 64.5 °; The relative leaf height in B-B molded lines cross section number is 12.5%, and how much inlet angles are 47.36 °, and how much flow outlet angles are 23.88 °, and the peace corner is 61.43 °; The relative leaf height in C-C molded lines cross section number is 25%, and how much inlet angles are 47.19 °, and how much flow outlet angles are 22.73 °, and the peace corner is 58.44 °; The relative leaf height in D-D molded lines cross section number is 37.5%, and how much inlet angles are 49.3 °, and how much flow outlet angles are 22.35 °, and the peace corner is 55.41 °; The relative leaf height in E-E molded lines cross section number is 50%, and how much inlet angles are 51.32 °, and how much flow outlet angles are 21.32 °, and the peace corner is 52.36 °; The relative leaf height in F-F molded lines cross section number is 62.5%, and how much inlet angles are 52.82 °, and how much flow outlet angles are 22.09 °, and the peace corner is 49.31 °; The relative leaf height in G-G molded lines cross section number is 75%, and how much inlet angles are 55.49 °, and how much flow outlet angles are 22.1 °, and the peace corner is 45.5 °; The relative leaf height in H-H molded lines cross section number is 87.5%, and how much inlet angles are 59.58 °, and how much flow outlet angles are 21.78 °, and the peace corner is 41.22 °; The relative leaf height in J-J molded lines cross section number is 100%, and how much inlet angles are 67.52 °, and how much flow outlet angles are 20.96 °, and the peace corner is 37.18 °.
3, the big enthalpy drop reactionary style of steam turbine according to claim 1 moving vane is characterized in that the height of blade working part (2) is 60mm.
4, the big enthalpy drop reactionary style of steam turbine according to claim 1 moving vane is characterized in that the height of blade working part (2) is 90mm.
5, the big enthalpy drop reactionary style of steam turbine according to claim 1 moving vane is characterized in that the height of blade working part (2) is 120mm.
6, the big enthalpy drop reactionary style of steam turbine according to claim 1 moving vane is characterized in that the height of blade working part (2) is 150mm.
7, the big enthalpy drop reactionary style of steam turbine according to claim 1 moving vane is characterized in that the height of blade working part (2) is 200mm.
8, the big enthalpy drop reactionary style of steam turbine according to claim 1 moving vane is characterized in that the height of blade working part (2) is 280mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520021489 CN2828320Y (en) | 2005-08-24 | 2005-08-24 | Steam turbine large enthalpy drop reaction moving vane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520021489 CN2828320Y (en) | 2005-08-24 | 2005-08-24 | Steam turbine large enthalpy drop reaction moving vane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2828320Y true CN2828320Y (en) | 2006-10-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520021489 Expired - Lifetime CN2828320Y (en) | 2005-08-24 | 2005-08-24 | Steam turbine large enthalpy drop reaction moving vane |
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| Country | Link |
|---|---|
| CN (1) | CN2828320Y (en) |
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2005
- 2005-08-24 CN CN 200520021489 patent/CN2828320Y/en not_active Expired - Lifetime
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20150824 Granted publication date: 20061018 |
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| EXPY | Termination of patent right or utility model |