CN202914229U - Blade of water turbine - Google Patents
Blade of water turbine Download PDFInfo
- Publication number
- CN202914229U CN202914229U CN2012206136618U CN201220613661U CN202914229U CN 202914229 U CN202914229 U CN 202914229U CN 2012206136618 U CN2012206136618 U CN 2012206136618U CN 201220613661 U CN201220613661 U CN 201220613661U CN 202914229 U CN202914229 U CN 202914229U
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- CN
- China
- Prior art keywords
- blade
- water turbine
- turbine
- cavitation
- water
- 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 provides a blade of a water turbine. The blade of the water turbine is semi-spherical-shell-shaped. The middle of an inner cavity of the blade of the water turbine extends to form a protrusion. The top of the protrusion is as high as an opening of a spherical shell. A periphery section formed by the protrusion and the blade of the water turbine is W-shaped. An anti-cavitation layer is respectively arranged on inner walls of two buckets of the inner cavity of the blade of the water turbine. Due to the facts the W-shaped buckets are adopted to enable water flow to be divided, and meanwhile anti-cavitation layers are arranged, the blade of the water turbine has the advantages of improving bubble corrosion resistant capability of the blade of the water turbine, prolonging service life of the blade of the water turbine, enabling the water turbine to be capable of bearing high rotating speed, and meanwhile reducing cost.
Description
Technical field
The utility model relates to a kind of water turbine, particularly a kind of blade of water turbine.
Background technique
A kind of microcell fatigue ruption of flow passage components part during cavitation phenomenons is the one of the main reasons that turbine blade lost efficacy.Serious cavitation erosion has influence on the water turbine working efficiency, shortens the repair cycle, increases the cost of overhaul, reduces economic benefit.The generation of cavitation and the order of severity and flow characteristics, the hydraulic turbine structure design, the factors such as performance of the employed material of flow component are relevant.
Summary of the invention
The purpose of this utility model provides a kind of turbine blade of anti-cavitation.
For achieving the above object, the utility model takes following technical proposals to realize:
A kind of blade of water turbine, described blade are the hemisphere shelly, extend projection in the middle of the inner chamber of blade, and the top of described projection and spherical shell mouth are contour, and the circumferential cross-section that this projection and blade form is the W shape, and two bucket inwalls of described blade inner chamber are provided with the anti-cavitation layer.
Further, described blade is uniformly arranged and fixed on the runner of water turbine.
Further, described vacuum side of blade is provided with support device, and described support device one side is connected with the back side of blade, and another side is connected with described runner.
The utility model is by above technological scheme, a kind of turbine blade of anti-cavitation simple in structure is provided, with W shape bucket current are shunted, be provided with simultaneously the anti-cavitation layer, strengthen the anti-bubble corrosion ability of blade, increase the working life of turbine blade, made water turbine can bear higher rotational velocity, reduced simultaneously maintenance cost.
Description of drawings
Fig. 1 is the schematic diagram of the utility model turbine blade.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in detail.
The blade of water turbine as shown in Figure 1 is the hemisphere shelly, adopts this type of hemisphere shelly blade can reduce the adverse current moment of rotation, improves the power of water turbine, does not need larger water flow and higher water-head when making the water turbine generating.
Blade comprises blade cast main body 1, anti-cavitation layer 2 and W shape bucket 3.Extend projection in the middle of the inner chamber of its Leaf cast main body 1, the top of described projection and spherical shell mouth are contour, and the circumferential cross-section that this projection and blade form is the W shape, thereby form W shape bucket 3 in inside.
The effect of current shuntings has been played in the setting of described W shape bucket 3, increase and hold water area and water guide direction, the blade internal surface of twin-bucket shape is stressed more balanced, thereby has strengthened the blade bearing capacity, improve the anti-cavitation performance of blade intracavity bottom central authorities, prolonged the working life of blade.
Described blade inner chamber W shape bucket 3 inwalls are provided with anti-cavitation layer 2.Described anti-cavitation layer 2 can be multiple material, comprises macromolecular material, alloy material, extraordinary enamel etc.Different according to selected material, take corresponding Placement that anti-cavitation layer 2 is covered blade cast main body 1 surface.
By the setting of anti-cavitation layer 2, increased the anti-cavitation performance of turbine blade, make blade can bear higher rotational velocity, increase the working life of blade, reduce the maintenance cost that increases because of the frequent blade.
Among the present invention, blade can arrange according to the actual conditions of required power quantity and the size of blade, thereby guarantees that the water wheels function provides enough power.Described blade is uniformly arranged and fixed on the runner of water turbine.
In the preferred embodiment of the invention, described vacuum side of blade is provided with support device, and described support device one side is connected with the back side of blade, and another side is connected with runner.Adopt this support device can strengthen the intensity of blade.
Although the utility model discloses as above with preferred embodiment, the utility model is not to be defined in this.Any those skilled in the art within not breaking away from spirit and scope of the present utility model, all can make various changes or modifications, and therefore protection domain of the present utility model should be as the criterion with the claim limited range.
Claims (3)
1. the blade of a water turbine, described blade is the hemisphere shelly, extends projection in the middle of the inner chamber of blade, the top of described projection and spherical shell mouth are contour, the circumferential cross-section that this projection and blade form is the W shape, it is characterized in that, described blade inner chamber W shape bucket inwall is provided with the anti-cavitation layer.
2. blade according to claim 1 is characterized in that, described blade is uniformly arranged and fixed on the runner of water turbine.
3. blade according to claim 1 is characterized in that, described vacuum side of blade is provided with support device, and described support device one side is connected with the back side of blade, and another side is connected with described runner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206136618U CN202914229U (en) | 2012-11-20 | 2012-11-20 | Blade of water turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206136618U CN202914229U (en) | 2012-11-20 | 2012-11-20 | Blade of water turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202914229U true CN202914229U (en) | 2013-05-01 |
Family
ID=48162548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012206136618U Expired - Fee Related CN202914229U (en) | 2012-11-20 | 2012-11-20 | Blade of water turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202914229U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762332A (en) * | 2016-12-29 | 2017-05-31 | 湖南省正侃水力水电研发有限公司 | New Washdown type universal hydranlic turbine and its bucket |
-
2012
- 2012-11-20 CN CN2012206136618U patent/CN202914229U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762332A (en) * | 2016-12-29 | 2017-05-31 | 湖南省正侃水力水电研发有限公司 | New Washdown type universal hydranlic turbine and its bucket |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130501 Termination date: 20151120 |
|
| EXPY | Termination of patent right or utility model |