CN203383966U - Abrasion-resistant water turbine spiral case capable of reducing silt - Google Patents
Abrasion-resistant water turbine spiral case capable of reducing silt Download PDFInfo
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- CN203383966U CN203383966U CN201320482090.3U CN201320482090U CN203383966U CN 203383966 U CN203383966 U CN 203383966U CN 201320482090 U CN201320482090 U CN 201320482090U CN 203383966 U CN203383966 U CN 203383966U
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- Prior art keywords
- silt
- spiral case
- abrasion
- reduced
- water turbine
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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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Abstract
The utility model discloses an abrasion-resistant water turbine spiral case capable of reducing silt. A silt elimination tube communicated with the interior of the spiral case is arranged at a position, close to the nose end, of the outer side of the water turbine spiral case in the downstream direction, a stop valve is arranged on the silt elimination tube which is communicated with a draft tube, and silt is directly discharged downstream. In a flood season, the silt elimination tube is opened, the silt with high concentration and coarse particles is guided into the silt elimination tube through a spiral case water silt separating effect, the content of the silt passing through a water turbine is reduced, abrasion to a turbine runner is lightened. The abrasion-resistant water turbine spiral case capable of reducing silt is utilized, the sand content of water flow passing through the turbine runner can be reduced, the phenomenon that starting-up cannot be achieved due to much silt of a station in the flood season is avoided, abrasion of silt to the runner in the flood season is reduced, meanwhile the situation that the silt is unevenly distributed is reduced, a runner blade is uniformly stressed, vibration of a unit is lightened, frequency of maintenance brought to vibration of the unit is reduced, and capital is saved.
Description
Technical field
The utility model belongs to the Hydraulic and Hydro-Power Engineering technical field, particularly relates to a kind of husky wear-resistant spiral case that subtracts.
Background technique
The continental river sand content in the fully-loaded streams such as the Yellow River and Xinjiang is larger, especially flood season, sediment concentration was quite high, pressing close to the spiral case outer wall under the centrifugal action that silt carrying flow produces at spiral case is large particle high concentration of sediment current, and very low near seat ring place sand content, chiltern is very thin.Only have nearly nose place, large particle, high concentration of sediment current enter stator from here, enter runner, cause the water turbine wearing and tearing.Be positioned at Shang power station, these rivers ubiquity power generation in the flood seasons silt erosion serious, the operation of dare not starting shooting during even a lot of Hydropower station during flood period, bleed off hydraulic power potentials in vain, causes tremendous economic to waste.
During flood season, the streamflow flow velocity is larger, silt still has major part to enter the hydroturbine water intake runner after setting pot, in spiral case due to the separation effect of spiral case, cause the spiral case outside and nose place sediment charge higher, form the vane stress inequality during runner running, easily cause the unit vibration phenomenon.
The model utility content
Technical problem to be solved in the utility model is, a kind of husky wear-resistant spiral case that subtracts of the husky separation effect design of water that utilizes spiral case is provided.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of wear-resistant spiral case of sand that subtracts, in the spiral case outside near nose place, sand discharge pipe that Parallel to the flow direction is provided with to communicate with spiral case inside, be provided with shutoff valve on the sand discharge pipe, the sand discharge pipe is communicated with draft tube, directly silt is discharged to downstream.
Described sand discharge pipe is connected on elbow of draft tube.
The beneficial effects of the utility model are: utilize spiral case to subtract husky wear-resistant, can reduce the sediment concentration by rotary wheel of water turbine, the phenomenon of avoiding the high concentration of sediment Hydropower station during flood period to start shooting, the abrasion of silt to runner while reducing flood season, simultaneously, reduce the situation of silt skewness, make runner bucket stressed evenly, alleviate unit vibration, reduce the maintenance frequency of bringing due to unit vibration, the saving fund.
The accompanying drawing explanation
Fig. 1 is the schematic diagram that subtracts the wear-resistant spiral case of sand of the present utility model.
In figure, the 1-spiral case; 2-sand discharge pipe; The 3-shutoff valve.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
The working principle of spiral case of the present utility model is identical with prior art, can be with reference to prior art, so no longer narration, the difference of the utility model and prior art is to be provided with the sand discharge pipe in the spiral case outside near nose, below is described in detail:
As shown in Figure 1, of the present utility modelly subtract husky wear-resistant spiral case, in spiral case 1 outside, near nose place, sand discharge pipe 2 that Parallel to the flow direction is provided with to communicate with spiral case inside, be provided with shutoff valve 3 on sand discharge pipe 2, sand discharge pipe 2 is communicated with draft tube, directly silt is discharged to downstream.
Described sand discharge pipe 2 is connected on elbow of draft tube.
The above-mentioned spiral case that utilizes subtracts husky wear-resistant method, at spiral case nose arranged outside sand discharge pipe, open the sand discharge pipe when flood season, by the husky separation effect of spiral case water, high concentration, coarse sediment are imported to the sand discharge pipe, reduce the machine sand content, alleviated the abrasion of rotary wheel of water turbine.
Desilting pipeline is communicated on draft tube by stop valve, opens valve during flood season, will directly arrange into draft tube containing husky water.
The utility model utilizes the husky separation effect of the water of spiral case to make the principle of silt in the spiral case outer wall, by install the sand discharge pipe additional at the nose position, subtracts husky wear-resistant.Silt is reduced into water turbine, will greatly alleviate the Sand Erosion on Hydraulic Turbine.The silt that can reduce in spiral case enters stator and runner, and the sediment charge reduced by stator and runner reaches the purpose that reduces the runner abrasion.
During the power station infrastructure, the sand discharge pipe is set on spiral case, the sand discharge tube opening is near the nose of the spiral case outside, sand discharge pipe Parallel to the flow direction is offered, on the sand discharge pipe, shutoff valve is set, opens during flood season, hydraulic turbine operation is got rid of high concentration silt, the oblique lower connection draft tube of sand discharge pipe, directly silt is discharged to downstream tail water, during non-flood season, throttle down, reduce volumetric loss, regularly draining prevents the sand discharge blockage.
Desilting pipeline is communicated on draft tube by stop valve, opens valve during flood season, will directly arrange into draft tube containing husky water, without increasing collection gallery, without increasing draining pump.Reduce the sand content in spiral case by the sand discharge pipe, make to enter the even density of the water of stator and runner, form even circular rector, the unit vibration problem that in reducing, outside density unevenness and granule impact bring.
Above-described embodiment is only for illustrating technological thought of the present utility model and characteristics, its purpose is to make those skilled in the art can understand content of the present utility model and implement according to this, can not only with the present embodiment, limit the scope of the claims of the present utility model, be equal variation or the modification that spirit that all the utility model disclose is done, still drop in the scope of the claims of the present utility model.
Claims (2)
1. one kind subtracts husky wear-resistant spiral case, it is characterized in that, in spiral case (1) outside near nose place, sand discharge pipe (2) that Parallel to the flow direction is provided with to communicate with spiral case inside, be provided with shutoff valve (3) on sand discharge pipe (2), sand discharge pipe (2) is communicated with draft tube, directly silt is discharged to downstream.
2. the wear-resistant spiral case of sand that subtracts according to claim 1, is characterized in that, described sand discharge pipe (2) is connected on elbow of draft tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320482090.3U CN203383966U (en) | 2013-08-08 | 2013-08-08 | Abrasion-resistant water turbine spiral case capable of reducing silt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320482090.3U CN203383966U (en) | 2013-08-08 | 2013-08-08 | Abrasion-resistant water turbine spiral case capable of reducing silt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203383966U true CN203383966U (en) | 2014-01-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320482090.3U Expired - Lifetime CN203383966U (en) | 2013-08-08 | 2013-08-08 | Abrasion-resistant water turbine spiral case capable of reducing silt |
Country Status (1)
| Country | Link |
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| CN (1) | CN203383966U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103362724A (en) * | 2013-08-08 | 2013-10-23 | 中水北方勘测设计研究有限责任公司 | Sediment-reducing and abrasion-resistant water turbine volute and method for reducing sediment and resisting abrasion by means of water turbine volute |
-
2013
- 2013-08-08 CN CN201320482090.3U patent/CN203383966U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103362724A (en) * | 2013-08-08 | 2013-10-23 | 中水北方勘测设计研究有限责任公司 | Sediment-reducing and abrasion-resistant water turbine volute and method for reducing sediment and resisting abrasion by means of water turbine volute |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140108 |