CN2828323Y - Large enthalpy drop reaction stator blade - Google Patents
Large enthalpy drop reaction stator blade Download PDFInfo
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- CN2828323Y CN2828323Y CN 200520021490 CN200520021490U CN2828323Y CN 2828323 Y CN2828323 Y CN 2828323Y CN 200520021490 CN200520021490 CN 200520021490 CN 200520021490 U CN200520021490 U CN 200520021490U CN 2828323 Y CN2828323 Y CN 2828323Y
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Abstract
The big enthalpy drop reactionary style of steam turbine stator blade, it relates to a kind of improvement of turbine blade structure.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 molded lines of blade working part 2 of the present utility model is the variable cross section twisted blade, along blade height sectional shape difference, have relatively between adjacent two sections and reverse, the height of blade working part 2 is 30～300mm, the geometry inlet angles of blade working part 2 are 41.95 ° → 59.5 ° → 55.63 ° by following connecting body 3 supreme connecting bodys 1, how much flow outlet angles of blade working part 2 are 21.14 ° → 21.15 ° → 20.28 ° → 20.53 ° → 19.8 ° by following connecting body 3 supreme connecting bodys 1, and the peace corner is 55.42 °～42.04 °.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
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, the length of rotor is long, the manufacture cost problem of higher.After using big enthalpy drop blade, the length of progression, blade number of elements and the rotor of steam turbine set is reduced, and attracting attention of industry extremely.Though using the length of progression, blade number of elements and rotor that big enthalpy drop blade can make steam turbine set reduces, 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 are not resolved.
The model utility content:
The purpose of this utility model be have also for solving existing big enthalpy drop blade that structure is unreasonable, the cross section bending resistance is poor, loss of incidence and the bigger problem of secondary flow loss, the big enthalpy drop reactionary style of a kind of steam turbine stator blade 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 by last connecting body 1, blade working part 2 and following connecting body 3 are formed, fixedly connected with the lower end of last connecting body 1 in the upper end of blade working part 2, fixedly connected with the upper end of following connecting body 3 in the lower end of blade working part 2, 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 height of blade working part 2 is 30～300mm, the geometry inlet angles of blade working part 2 are 41.95 ° → 59.5 ° → 55.63 ° by following connecting body 3 supreme connecting bodys 1, how much flow outlet angles of blade working part 2 are 21.14 ° → 21.15 ° → 20.28 ° → 20.53 ° → 19.8 ° by following connecting body 3 supreme connecting bodys 1, and the peace corner is 55.42 °～42.04 °.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 by last connecting body 1, blade working part 2 and following connecting body 3 are formed, fixedly connected with the lower end of last connecting body 1 in the upper end of blade working part 2, fixedly connected with the upper end of following connecting body 3 in the lower end of blade working part 2, 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 height of blade working part 2 is 30～300mm, the geometry inlet angles of blade working part 2 are 41.95 ° → 59.5 ° → 55.63 ° by following connecting body 3 supreme connecting bodys 1, how much flow outlet angles of blade working part 2 are 21.14 ° → 21.15 ° → 20.28 ° → 20.53 ° → 19.8 ° by following connecting body 3 supreme connecting bodys 1, and the peace corner is 55.42 °～42.04 °.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 41.95 °, and how much flow outlet angles are 21.14 °, and the peace corner is 55.42 °; The relative leaf height in B-B molded lines cross section number is 12.5%, and how much inlet angles are 46.71 °, and how much flow outlet angles are 21.59 °, and the peace corner is 52.66 °; The relative leaf height in C-C molded lines cross section number is 25%, and how much inlet angles are 52.37 °, and how much flow outlet angles are 21.88 °, and the peace corner is 49.93 °; The relative leaf height in D-D molded lines cross section number is 37.5%, and how much inlet angles are 55.02 °, and how much flow outlet angles are 21.25 °, and the peace corner is 47.37 °; The relative leaf height in E-E molded lines cross section number is 50%, and how much inlet angles are 57.9 °, and how much flow outlet angles are 20.28 °, and the peace corner is 45.06 °; The relative leaf height in F-F molded lines cross section number is 62.5%, and how much inlet angles are 59.5 °, and how much flow outlet angles are 20.53 °, and the peace corner is 43.73 °; The relative leaf height in G-G molded lines cross section number is 75%, and how much inlet angles are 57.98 °, and how much flow outlet angles are 20.35 °, and the peace corner is 43 °; The relative leaf height in H-H molded lines cross section number is 87.5%, and how much inlet angles are 57.09 °, and how much flow outlet angles are 20.34 °, and the peace corner is 42.42 °; The relative leaf height in J-J molded lines cross section number is 100%, and how much inlet angles are 55.63 °, and how much flow outlet angles are 19.8 °, and the peace corner is 42.04 °.The corresponding relation of each cross section geometric data of variable cross section twisted blade sees Table 1:
Table 1
| The type wire size | 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 | 41.95 | 46.71 | 52.37 | 55.02 | 57.90 | 59.50 | 57.98 | 57.09 | 55.63 |
| How much flow outlet angles | 21.14 | 21.59 | 21.88 | 21.25 | 20.28 | 20.53 | 20.35 | 20.34 | 19.80 |
| The peace corner | 55.42 | 52.66 | 49.93 | 47.37 | 45.06 | 43.73 | 43.00 | 42.42 | 42.04 |
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 stator blade, it is by last connecting body (1), blade working part (2) and following connecting body (3) are formed, fixedly connected with the lower end of last connecting body (1) in the upper end of blade working part (2), fixedly connected with the upper end of following connecting body (3) in the lower end of blade working part (2), 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 height that it is characterized in that blade working part (2) is 30～300mm, the geometry inlet angles of blade working part (2) are 41.95 ° → 59.5 ° → 55.63 ° by the following supreme connecting body of connecting body (3) (1), how much flow outlet angles of blade working part (2) are 21.14 ° → 21.15 ° → 20.28 ° → 20.53 ° → 19.8 ° by the following supreme connecting body of connecting body (3) (1), and the peace corner is 55.42 °～42.04 °.
2, the big enthalpy drop reactionary style of steam turbine according to claim 1 stator blade, 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 41.95 °, how much flow outlet angles are 21.14 °, and the peace corner is 55.42 °; The relative leaf height in B-B molded lines cross section number is 12.5%, and how much inlet angles are 46.71 °, and how much flow outlet angles are 21.59 °, and the peace corner is 52.66 °; The relative leaf height in C-C molded lines cross section number is 25%, and how much inlet angles are 52.37 °, and how much flow outlet angles are 21.88 °, and the peace corner is 49.93 °; The relative leaf height in D-D molded lines cross section number is 37.5%, and how much inlet angles are 55.02 °, and how much flow outlet angles are 21.25 °, and the peace corner is 47.37 °; The relative leaf height in E-E molded lines cross section number is 50%, and how much inlet angles are 57.9 °, and how much flow outlet angles are 20.28 °, and the peace corner is 45.06 °; The relative leaf height in F-F molded lines cross section number is 62.5%, and how much inlet angles are 59.5 °, and how much flow outlet angles are 20.53 °, and the peace corner is 43.73 °; The relative leaf height in G-G molded lines cross section number is 75%, and how much inlet angles are 57.98 °, and how much flow outlet angles are 20.35 °, and the peace corner is 43 °; The relative leaf height in H-H molded lines cross section number is 87.5%, and how much inlet angles are 57.09 °, and how much flow outlet angles are 20.34 °, and the peace corner is 42.42 °; The relative leaf height in J-J molded lines cross section number is 100%, and how much inlet angles are 55.63 °, and how much flow outlet angles are 19.8 °, and the peace corner is 42.04 °.
3, the big enthalpy drop reactionary style of steam turbine according to claim 1 stator blade 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 stator blade 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 stator blade 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 stator blade 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 stator blade 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 stator blade is characterized in that the height of blade working part (2) is 280mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520021490 CN2828323Y (en) | 2005-08-24 | 2005-08-24 | Large enthalpy drop reaction stator blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520021490 CN2828323Y (en) | 2005-08-24 | 2005-08-24 | Large enthalpy drop reaction stator blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2828323Y true CN2828323Y (en) | 2006-10-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520021490 Expired - Lifetime CN2828323Y (en) | 2005-08-24 | 2005-08-24 | Large enthalpy drop reaction stator blade |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102052095A (en) * | 2010-07-07 | 2011-05-11 | 北京全四维动力科技有限公司 | Asymmetric diaphragm static cascade and asymmetric blades in nozzle set for axial flow steam turbine |
-
2005
- 2005-08-24 CN CN 200520021490 patent/CN2828323Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102052095A (en) * | 2010-07-07 | 2011-05-11 | 北京全四维动力科技有限公司 | Asymmetric diaphragm static cascade and asymmetric blades in nozzle set for axial flow steam turbine |
| CN102052095B (en) * | 2010-07-07 | 2013-12-04 | 北京全四维动力科技有限公司 | Asymmetric diaphragm static cascade and asymmetric blades in nozzle set for axial flow steam turbine |
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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 |
|
| EXPY | Termination of patent right or utility model |