CN203476593U - Water turbine air supply structure - Google Patents
Water turbine air supply structure Download PDFInfo
- Publication number
- CN203476593U CN203476593U CN201320596048.4U CN201320596048U CN203476593U CN 203476593 U CN203476593 U CN 203476593U CN 201320596048 U CN201320596048 U CN 201320596048U CN 203476593 U CN203476593 U CN 203476593U
- Authority
- CN
- China
- Prior art keywords
- main shaft
- air supply
- water turbine
- supply structure
- turbine air
- Prior art date
- 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 - Fee Related
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Hydraulic Turbines (AREA)
Abstract
The utility model relates to a water turbine air supply structure which is used for eliminating generating set resonant vibration caused by pressure pulsation occurring inside a draft tube. According to the water turbine air supply structure, a main shaft and a turning wheel are connected with each other through a main shaft flange, and a main shaft seal device is arranged on the upper portion of the main shaft flange. The water turbine air supply structure is characterized in that 10-12 inclined holes are formed in the main shaft flange, and an air inlet pipe is mechanically fixed to a support of the main shaft seal device and is communicated with a cavity of the main shaft seal device arranged on the upper portion of the main shaft flange. Compared with an original air supply device, the complex structure of the original air supply device is eliminated, the weight of a generating set is reduced, and production cost is lowered; although the water turbine air supply structure is quite simple in structure, the water turbine air supply structure plays the same role as an original main shaft center hole air supply device in actual operation, so that the water turbine air supply structure is worth popularizing.
Description
Technical field
The utility model relates to air supplement of turbine structure, is applied to eliminate the caused generating set resonant vibration of pressure pulsation occurring in draft tube.
Background technique
When water turbine departs from optimum operating condition operation, due to current disturbance, there is to some extent pressure pulsation, generally 40%, during to 70% rated load operation, in draft tube, occur whirlpool band, due to whirlpool band strong disturbance, or its frequency overlaps and produces resonance with unit natural frequency, will cause unit vibration or load swing, therefore in unstable period region, fill into air, can reduce vibration, improve cavitation and improve hydraulic efficiency.At present, aspect water turbine, modal natural gas supplementary structure is to adopt draft tube tonifying Qi and air admission to main shaft central hole, and draft tube tonifying Qi is generally used for Pump for Medium and Small Power Generating Set, and air admission to main shaft central hole is generally used for medium-and-large-sized unit.
At present, the air admission to main shaft central hole apparatus structure adopting on medium-and-large-sized unit is comparatively complicated.Its tonifying Qi mode is that air enters runner bottom from spindle hole and carries out tonifying Qi, this making-up air device is to be installed on the connecting base of generator top, conventionally need two pipes, a suction tude, another root waste pipe, and the supporting support member seat of honour and lower, many cost of production have been increased, meanwhile, owing to being installed on generator top, be also unfavorable for that the factory building in power station is attractive in appearance.
Summary of the invention
The purpose of this utility model is overcoming above-mentioned deficiency of the prior art, and a kind of air supplement of turbine structure simple in structure is provided.
The purpose of this utility model can reach by following technical proposals: air supplement of turbine structure, main shaft is connected by spindle flange with runner, above spindle flange with main shaft sealing device, it is characterized in that spindle flange opens 10～12 inclined holes, suction tude is mechanically anchored on the bearing of main shaft sealing device, and is communicated with the cavity of the main shaft seal on spindle flange top.
The utlity model has following advantage: compare with original making-up air device, saved the structure of original making-up air device complexity, alleviated the weight of unit, reduced cost of production, its structure is very simple, but in actual motion, brought into play the effect with original air admission to main shaft central hole device, so this structure is worthy to be popularized.
Accompanying drawing explanation
Accompanying drawing 1 is the utility model structural representation.
In figure, 1 is runner, the 2nd, and inclined hole, the 3rd, spindle flange, the 5th, suction tude, the 7th, main shaft, the 9th, main shaft sealing device.
Embodiment
Below the utility model, be further described.Air supplement of turbine structure, the same runner of main shaft (7) (1) is connected by spindle flange (3), in spindle flange (3) top with main shaft sealing device (9), spindle flange (3) is opened 10～12 inclined holes (2), suction tude (5) is mechanically anchored on the bearing of main shaft sealing device (9), and is communicated with the cavity of the main shaft seal on spindle flange top.
When needs tonifying Qi, air enters by suction tude (5) in the cavity of main shaft seal on spindle flange top, then by inclined hole (2), enters runner (1) bottom and carries out tonifying Qi.Structure is very simple, saves the structure of original making-up air device complexity, has alleviated the weight of unit, has reduced cost of production. and meanwhile, generator floor is owing to not had this covering device to become more attractive in appearance, and in the actual motion of power station, this making-up air device effect is good.
Claims (1)
1. air supplement of turbine structure, the same runner of main shaft (7) (1) is connected by spindle flange (3), in spindle flange (3) top with main shaft sealing device (9), it is characterized in that spindle flange (3) opens 10～12 inclined holes (2), suction tude (5) is mechanically anchored on the bearing of main shaft sealing device (9), and is communicated with the cavity of the main shaft seal on spindle flange top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320596048.4U CN203476593U (en) | 2013-09-26 | 2013-09-26 | Water turbine air supply structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320596048.4U CN203476593U (en) | 2013-09-26 | 2013-09-26 | Water turbine air supply structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203476593U true CN203476593U (en) | 2014-03-12 |
Family
ID=50224933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320596048.4U Expired - Fee Related CN203476593U (en) | 2013-09-26 | 2013-09-26 | Water turbine air supply structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203476593U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019173873A1 (en) * | 2018-03-15 | 2019-09-19 | Henry Young & Sons Proprietary Limited | Cavitation free rotary mechanical device with improved output |
-
2013
- 2013-09-26 CN CN201320596048.4U patent/CN203476593U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019173873A1 (en) * | 2018-03-15 | 2019-09-19 | Henry Young & Sons Proprietary Limited | Cavitation free rotary mechanical device with improved output |
| AU2019235615B2 (en) * | 2018-03-15 | 2022-11-24 | Henry Young & Sons Proprietary Limited | Cavitation free rotary mechanical device with improved output |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140312 Termination date: 20140926 |
|
| EXPY | Termination of patent right or utility model |