CN2918742Y - Special exhaust stage blade for remodeling units - Google Patents
Special exhaust stage blade for remodeling units Download PDFInfo
- Publication number
- CN2918742Y CN2918742Y CN 200620021165 CN200620021165U CN2918742Y CN 2918742 Y CN2918742 Y CN 2918742Y CN 200620021165 CN200620021165 CN 200620021165 CN 200620021165 U CN200620021165 U CN 200620021165U CN 2918742 Y CN2918742 Y CN 2918742Y
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- CN
- China
- Prior art keywords
- blade
- vane
- section
- cross
- working part
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- 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.)
- Expired - Lifetime
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Abstract
The utility model relates to a special end vane used for transforming the set, in particular to a steam turbine blade. The purpose of the utility model is to solve the problems that the prior end vane used for condensing 50KW set has unstable quality and short service life, which seriously affects the safe operation of the steam turbine, and to supply a special end vane for transforming the set. As for the utility model, the height of a working part (1) is 540mm; the axial width of the vane working part (1) root is 108.75mm; the frame line of the vane working part (1) is a twisty vane with variable cross-section, the cross-section varies and the area of the cross-section reduces along with the increase of the vane height, and the two adjacent cross-sections have a relative twisting angle; a Phi 11.5/Phi 7.5mm hollow steel pipe and a Phi 10/Phi 6mm hollow steel pipe are connected with each other to form a loose lacing wire (2) with two entire circles; and a vane root (3) is a straight-tooth four-branch type vane root and the axial width H is 97.5mm. The utility model has the advantages of easy assembling, good dynamic frequency adjusting performance, small dynamic stress, elimination of the vane rupture and safe and reliable operation.
Description
Technical field
The utility model relates to a kind of turbine blade.
Background technique
Existing condensation 50MW unit after the time of operation about a year, has some exhaust stage blades that fracture accident has taken place.Fact proved, the existing exhaust stage blade quality instability that is used for condensation 50MW unit, working life is short, has had a strong impact on the safe operation of steam turbine.
The model utility content
The purpose of this utility model is for solving the existing exhaust stage blade quality instability that is used for condensation 50MW unit, and working life is short, has had a strong impact on the problem of the safe operation of steam turbine, and a kind of special-purpose exhaust stage blade of transforming unit is provided.The utlity model has easy to assembly, help moving frequency modulation, dynamic stress little, eliminate leaf destruction, characteristics safe and reliable to operation.The utility model is made up of blade working part 1, loose lacing wire 2 and blade root 3, blade working part 1 and blade root 3 are connected as a single entity, the molded lines of blade working part 1 is the variable cross section twisted blade, along blade height sectional shape difference, sectional area is reduced toward the top gradually by root, has relatively between adjacent two sections and reverses; The geometric data in variable cross section twisted blade cross section: the depth of section in A-A to N-N cross section number is 0～540mm; Section area is 13.171～2.871cm
2Maximum ga(u)ge is 16.3～4.66mm; Established angle be 83 ° 37 '～39 ° 42 '; Trailing edge thickness is 2.4～1.61mm; Chord length is 110.63～87.69mm; Axial width is 108.75～51.5mm, and loose lacing wire 2 is made up of the loose lacing wire of the whole circle of Φ 11.5/ Φ 7.5mm and Φ 10/ Φ 6mm two roads; Blade root 3 is straight-tooth four multifork roots.The utlity model has easy to assembly, help moving frequency modulation, dynamic stress little, eliminated leaf destruction accident, advantage safe and reliable to operation.
Description of drawings
Fig. 1 is a plan view of the present utility model, and Fig. 2 is a side view of the present utility model, and Fig. 3 is a plan structure schematic representation of the present utility model, and Fig. 4 is the superimposed schematic representation of vane type line of the present utility model.
Embodiment
Embodiment one: (referring to Fig. 1～Fig. 4) present embodiment is made up of blade working part 1, loose lacing wire 2 and blade root 3, blade working part 1 and blade root 3 are connected as a single entity, the height of blade working part 1 is 540mm, the root axial width of blade working part 1 is 108.75mm, the molded lines of blade working part 1 is the variable cross section twisted blade, along blade height sectional shape difference, section area is gradually little, has relatively between adjacent two sections and reverses; Loose lacing wire 2 connects into the whole circle loose lacing wire of two roads by the hollow steel pipe of Φ 11.5/ Φ 7.5mm and Φ 10/ Φ 6mm (wherein Φ 11.5mm is that external diameter, Φ 7.5mm are internal diameter, and Φ 10mm is that external diameter, Φ 6mm are internal diameter); Blade root 3 is straight-tooth four multifork roots, and axial width H is 97.5mm, and it makes the blade wheel rim of packing into securely, and assembling is stable, and is safe and reliable.
The geometric data in variable cross section twisted blade cross section: the depth of section in A-A to N-N cross section number is 0～540mm; Section area is 13.171～2.871cm
2Maximum ga(u)ge is 16.3～4.66mm; Established angle be 83 ° 37 '～39 ° 42 '; Trailing edge thickness is 2.4～1.61mm; Chord length is 110.63～87.69mm; Axial width is 108.75～51.5mm.
Table 1: each cross section basic parameter:
| Cross section number | Depth of section mm | Section area cm | Axial width mm | Chord length mm | Established angle ° | Maximum ga(u)ge mm | Trailing edge thickness mm | sin -1o/t |
| A-A | 0 | 13.171 | 108.75 | 110.63 | 83°37′ | 16.30 | 2.40 | 38°14′ |
| B-B | 20 | 12.446 | 108.39 | 109.49 | 81°40′ | 15.80 | 2.35 | 38°02′ |
| C-C | 80 | 10.742 | 103.55 | 106.59 | 76°12′ | 13.93 | 2.22 | 37°18′ |
| D-D | 140 | 9.238 | 98.71 | 104.31 | 71°03′ | 12.25 | 2.17 | 36°26′ |
| E-E | 200 | 7.835 | 93.88 | 102.62 | 66°02′ | 10.65 | 2.08 | 35°28′ |
| F-F | 265 | 6.489 | 88.64 | 101.43 | 60°45′ | 9.19 | 1.98 | 34°19′ |
| G-G | 332.5 | 5.469 | 83.20 | 100.83 | 55°22′ | 7.88 | 1.82 | 33°02′ |
| H-H | 400 | 4.345 | 74.63 | 96.69 | 49°46′ | 6.70 | 1.80 | 31°57′ |
| I-I | 465 | 3.65 | 66.38 | 92.70 | 45°11′ | 5.67 | 1.74 | 30°50′ |
| J-J | 525 | 2.99 | 58.77 | 88.88 | 40°47′ | 4.84 | 1.64 | 29°44′ |
| N-N | 540 | 2.871 | 51.50 | 87.69 | 39°42′ | 4.66 | 1.61 | 28°07′ |
Claims (3)
1, a kind of special-purpose exhaust stage blade of transforming unit, it is made up of blade working part (1), loose lacing wire (2) and blade root (3), blade working part (1) and blade root (3) are connected as a single entity, the molded lines of blade working part (1) is the variable cross section twisted blade, along blade height sectional shape difference, section area is gradually little, has relatively between adjacent two sections and reverses; The geometric data that it is characterized in that variable cross section twisted blade cross section: the depth of section in A-A to N-N cross section number is 0～540mm; Section area is 13.171～2.871cm
2Maximum ga(u)ge is 16.3～4.66mm; Established angle be 83 ° 37 '～39 ° 42 '; Trailing edge thickness is 2.4～1.61mm; Chord length is 110.63～87.69mm; Axial width is 108.75～51.5mm.
2, the special-purpose exhaust stage blade of transformation unit according to claim 1 is characterized in that loose lacing wire (2) connects into the whole circle loose lacing wire of two roads by the hollow steel pipe of Φ 11.5/ Φ 7.5mm and Φ 10/ Φ 6mm.
3, the special-purpose exhaust stage blade of transformation unit according to claim 1 is characterized in that blade root (3) is straight-tooth four multifork roots, and axial width H is 97.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620021165 CN2918742Y (en) | 2006-07-04 | 2006-07-04 | Special exhaust stage blade for remodeling units |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620021165 CN2918742Y (en) | 2006-07-04 | 2006-07-04 | Special exhaust stage blade for remodeling units |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2918742Y true CN2918742Y (en) | 2007-07-04 |
Family
ID=38216559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620021165 Expired - Lifetime CN2918742Y (en) | 2006-07-04 | 2006-07-04 | Special exhaust stage blade for remodeling units |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2918742Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2809579B1 (en) | 2012-01-31 | 2018-08-22 | United Technologies Corporation | Fan stagger angle for geared gas turbine engine |
-
2006
- 2006-07-04 CN CN 200620021165 patent/CN2918742Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2809579B1 (en) | 2012-01-31 | 2018-08-22 | United Technologies Corporation | Fan stagger angle for geared gas turbine engine |
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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: 20070704 |
|
| EXPY | Termination of patent right or utility model |