CN2851582Y - Superlong final-stage moving blades for full-speed steam turbine - Google Patents
Superlong final-stage moving blades for full-speed steam turbine Download PDFInfo
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- CN2851582Y CN2851582Y CN 200520022030 CN200520022030U CN2851582Y CN 2851582 Y CN2851582 Y CN 2851582Y CN 200520022030 CN200520022030 CN 200520022030 CN 200520022030 U CN200520022030 U CN 200520022030U CN 2851582 Y CN2851582 Y CN 2851582Y
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- blade
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- steam turbine
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Abstract
The utility model relates to a super long final stage movable blade for a full rotating speed steam turbine which is a steam turbine blade. The purpose of the utility model is to solve the problems that the maximum length of the blade of the existing steam turbine is only 1100 mm to not satisfy the requirement of a power market for a machine set with larger capacity. The height of the blade working part 2 of the utility model is 1200 mm, the axial width of a root of the blade working part 2 is 328 mm and the diameter of the root of the blade working part 2 is 1800 mm. An air discharging area of the blade is 11.31m< 2 >, the molded line is provided with a twist blade with a variable section, a blade root 1 is a skewed tooth longitudinal tree type blade root and axial width is 400 mm. The thickness of a damping surrounding belt 3 which is self-contained with a crown is 20 mm, and a lacing wire 4 is a complete ring wing type lacing wire. The utility model has the advantages that a long blade of 1200 mm has bigger air discharging area to effectively increase the single machine capacity of the machine set, and by giving twist assembly, a movable blade forms a complete ring connection, which is favorable to adjustment and frequency modulation. The defect that the past arch-shaped surrounding belt is fractured is changed, stress concentration which is caused by riveting does not exist and running is safe.
Description
Technical field
The utility model relates to a kind of turbine blade.
Background technique
Along with electricity market to increase efficient, the energy-saving equipment demand, this is faced with severe tests present overcritical, supercritical turbine group in the competition in market.The more jumbo unit of the market demand, more jumbo unit require the more blade of length, yet, the length of blade maximum of existing steam turbine have only 1100mm, can not satisfy the demand of electricity market to bigger capacity unit.
The model utility content
The purpose of this utility model is the 1100mm that has only for the length of blade maximum that solves existing steam turbine, can not satisfy the needs of problems of electricity market to bigger capacity unit, and a kind of full rotary speed steam turbine overlength final stage moving blade is provided.The utlity model has bigger leaving area, can effectively improve the single-machine capacity of unit, the characteristics of the high-power fired power generating unit heat-economy of raising.The utility model is made up of blade root 1, blade working part 2, self-crown damping shroud 3 and lashing wire 4, self-crown damping shroud 3 is connected as a single entity with the upper end of blade working part 2, blade root 1 is connected as a single entity with the lower end of blade working part 2, lashing wire 4 is arranged in the lacing wire hole 5 on the blade working part 2, the height of blade working part 2 is 1200mm, the root axial width of blade working part 2 is 328mm, and the root diameter (RD) of blade working part 2 is 1800mm, and the leaving area of blade is 11.31m
2, molded lines is the variable cross section twisted blade, and along blade height sectional shape difference, section area reduces, and has relatively between adjacent two sections and reverse, and blade root 1 is a helical teeth vertical tree type blade root, and axial width is 400mm, the thickness of self-crown damping shroud 3 is 20mm; Lashing wire 4 is whole circle aerofoil profile lashing wire.Blade is the pine assembling during assembling, makes moving vane form whole circle by twist recovery during operation and connects.The beneficial effects of the utility model are: the 1200mm linear leaf has bigger leaving area, can effectively improve the single-machine capacity of unit, significant to the heat-economy that improves high-power fired power generating unit and exploitation nuclear power generating sets, huge social benefit and economic benefit are arranged.The 1200mm linear leaf is a longest domestic final stage moving blade at present.With one dimension/standard three-dimensional/complete three-dimensional pneumatic, thermodynamic analysis calculates this exhaust stage blade and adopted the full three dimensional design of bending united forming, movable vane forms the compound bending chip level that comes into leaves along counter the turning round of leaf height; Vane tip adopts and carries shroud, reduces the loss, and multi-disc sealing gland tooth can be assembled in the top, prevents gas leakage, improves unit efficiency; Easy to assembly, make moving vane form whole circle connection by giving turning round to assemble, You Li Yu Tone puts in order and frequency modulation, has changed the defective of past arch form shroud fracture, and the stress that does not exist riveted joint to cause is concentrated, safe and reliable to operation.
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 folium of the present utility model, and Fig. 3 is the structural representation of lashing wire 4.
Embodiment
Embodiment one: (referring to Fig. 1, Fig. 2) present embodiment is made up of blade root 1, blade working part 2, self-crown damping shroud 3 and lashing wire 4, self-crown damping shroud 3 is connected as a single entity with the upper end of blade working part 2, blade root 1 is connected as a single entity with the lower end of blade working part 2, lashing wire 4 is arranged in the lacing wire hole 5 on the blade working part 2, the height of blade working part 2 is 1200mm, the root axial width of blade working part 2 is 328mm, the root diameter (RD) of blade working part 2 is 1800mm, and the leaving area of blade is 11.31m
2, molded lines is the variable cross section twisted blade, and along blade height sectional shape difference, section area reduces, and has relatively between adjacent two sections and reverse, and blade root 1 is a helical teeth vertical tree type blade root, and axial width is 400mm, the lock sheet of packing into during assembling avoids sharf to jumping; The thickness of self-crown damping shroud 3 is 20mm; Lashing wire 4 is whole circle aerofoil profile lashing wire, and blade is the pine assembling during assembling, makes moving vane form whole circle by twist recovery during operation and connects.On the steam turbine unit, use this blade one circle to have 66, can be used as subcritical, the supercritical steam turbine unit of variable power scope 300MW-1000MW grade or the exhaust stage blade of nuclear steam turbine group.No matter be in Economy, the safety reliability aspect of strength vibration characteristic, static strength and assurance unit all reaches advanced level.
Embodiment two: the leaf height that the geometric data in the variable cross section twisted blade cross section of (referring to Fig. 2) present embodiment sees Table 1:A-A to U-U cross section number is 0～1200mm; Section area is 9271.22～777.49mm
2Maximum ga(u)ge is 34.51～6.09mm; Established angle is 82～12.35 °; Inlet angle is 52.11～167.04 °; Exit angle is 41.65～21.65 °.
Each cross section basic parameter of table 1 is as follows:
| The cross section | Relative leaf height | The leaf height | Section area | b | B | Established angle | Maximum ga(u)ge | Inlet angle | Exit angle |
| mm | mm 2 | mm | mm | ° | mm | ° | ° | ||
| A-A | 0 | 0 | 9271.22 | 331.73 | 328 | 82 | 34.51 | 52.11 | 41.65 |
| B-B | 0.05 | 60 | 8688.21 | 302.21 | 297.24 | 80.2 | 36.64 | 52.2 | 38.79 |
| C-C | 0.1 | 120 | 7903.2 | 277.54 | 270.55 | 77.71 | 37.92 | 52.29 | 36.2 |
| D-D | 0.15 | 180 | 7110.23 | 258.55 | 248.45 | 74.51 | 37.28 | 53.41 | 35.29 |
| E-E | 0.2 | 240 | 6515.77 | 244.59 | 230.04 | 70.67 | 37.67 | 57.14 | 33.85 |
| F-F | 0.25 | 300 | 5899.17 | 234.17 | 213.73 | 66.35 | 37.26 | 61.82 | 33.7 |
| G-G | 0.3 | 360 | 5299.36 | 225.47 | 197.66 | 61.63 | 35.61 | 66.35 | 33.64 |
| H-H | 0.35 | 420 | 4723.47 | 217.91 | 181.31 | 56.61 | 33.19 | 71.4 | 32.48 |
| I-I | 0.4 | 480 | 4156.67 | 211.14 | 164.55 | 51.39 | 30.43 | 76.4 | 30.99 |
| J-J | 0.45 | 540 | 3614.93 | 205 | 147.51 | 46.09 | 27.7 | 82.98 | 29.83 |
| K-K | 0.5 | 600 | 3140.85 | 200.16 | 131.16 | 40.9 | 25.15 | 91.86 | 28.12 |
| L-L | 0.55 | 660 | 2599.15 | 196.88 | 116.14 | 36.01 | 21.39 | 102.07 | 26.44 |
| M-M | 0.6 | 720 | 2170.14 | 195.94 | 103.17 | 31.59 | 17.87 | 113.72 | 25.14 |
| N-N | 0.65 | 780 | 1839.29 | 196.45 | 91.81 | 27.65 | 14.91 | 125.47 | 24.29 |
| O-O | 0.7 | 840 | 1546.22 | 197.25 | 81.47 | 23.99 | 12.23 | 136.06 | 24.15 |
| P-P | 0.75 | 900 | 1282.54 | 198.2 | 72.29 | 20.76 | 12.86 | 145.79 | 24.11 |
| Q-Q | 0.8 | 960 | 1059.72 | 199.38 | 64.57 | 18.08 | 8.06 | 154.49 | 23.98 |
| R-R | 0.85 | 1020 | 896.06 | 200.91 | 58.61 | 16.04 | 7.05 | 161.54 | 23.83 |
| S-S | 0.9 | 1080 | 804.57 | 202.91 | 54.5 | 14.77 | 6.62 | 166.06 | 23.44 |
| T-T | 0.95 | 1140 | 765.33 | 205.56 | 48.86 | 13.68 | 6.21 | 167.02 | 22.83 |
| U-U | 1 | 1200 | 777.49 | 208.57 | 47.06 | 12.35 | 6.09 | 167.04 | 21.65 |
Claims (2)
1, a kind of full rotary speed steam turbine overlength final stage moving blade, it is by blade root (1), blade working part (2), self-crown damping shroud (3) and lashing wire (4) are formed, self-crown damping shroud (3) is connected as a single entity with the upper end of blade working part (2), blade root (1) is connected as a single entity with the lower end of blade working part (2), lashing wire (4) is arranged in the lacing wire hole (5) on the blade working part (2), the height that it is characterized in that blade working part (2) is 1200mm, the root axial width of blade working part (2) is 328mm, the root diameter (RD) of blade working part (2) is 1800mm, and the leaving area of blade is 11.31m
2, molded lines is the variable cross section twisted blade, and along blade height sectional shape difference, section area reduces, and has relatively between adjacent two sections and reverse, and blade root (1) is a helical teeth vertical tree type blade root, and axial width is 400mm, the thickness of self-crown damping shroud (3) is 20mm; Lashing wire (4) is whole circle aerofoil profile lashing wire.
2, full rotary speed steam turbine overlength final stage moving blade according to claim 1 is characterized in that the geometric data in variable cross section twisted blade cross section is: the leaf height in A-A to U-U cross section number is 0～1200mm; Section area is 9271.22～777.49mm
2Maximum ga(u)ge is 34.51～6.09mm; Established angle is 82～12.35 °; Inlet angle is 52.11～167.04 °; Exit angle is 41.65～21.65 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520022030 CN2851582Y (en) | 2005-11-28 | 2005-11-28 | Superlong final-stage moving blades for full-speed steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520022030 CN2851582Y (en) | 2005-11-28 | 2005-11-28 | Superlong final-stage moving blades for full-speed steam turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2851582Y true CN2851582Y (en) | 2006-12-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520022030 Expired - Lifetime CN2851582Y (en) | 2005-11-28 | 2005-11-28 | Superlong final-stage moving blades for full-speed steam turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2851582Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101333936B (en) * | 2007-06-27 | 2011-09-28 | 株式会社东芝 | Steam turbine, and intermediate support structure for holding row of long moving blades therein |
| CN106246236A (en) * | 2016-08-31 | 2016-12-21 | 南京赛达机械制造有限公司 | A kind of turbine blade of high intensity |
-
2005
- 2005-11-28 CN CN 200520022030 patent/CN2851582Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101333936B (en) * | 2007-06-27 | 2011-09-28 | 株式会社东芝 | Steam turbine, and intermediate support structure for holding row of long moving blades therein |
| US8105038B2 (en) | 2007-06-27 | 2012-01-31 | Kabushiki Kaisha Toshiba | Steam turbine, and intermediate support structure for holding row of long moving blades therein |
| CN106246236A (en) * | 2016-08-31 | 2016-12-21 | 南京赛达机械制造有限公司 | A kind of turbine blade of high intensity |
| CN106246236B (en) * | 2016-08-31 | 2017-07-25 | 南京赛达机械制造有限公司 | A kind of turbine blade of high intensity |
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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: 20061227 |
|
| EXPY | Termination of patent right or utility model |