CN204610125U - The gas supplementary structure of water turbine draft tube cone - Google Patents
The gas supplementary structure of water turbine draft tube cone Download PDFInfo
- Publication number
- CN204610125U CN204610125U CN201520144855.1U CN201520144855U CN204610125U CN 204610125 U CN204610125 U CN 204610125U CN 201520144855 U CN201520144855 U CN 201520144855U CN 204610125 U CN204610125 U CN 204610125U
- Authority
- CN
- China
- Prior art keywords
- centerbody
- water turbine
- transverse tube
- air drain
- draft tube
- 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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Classifications
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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 discloses a kind of gas supplementary structure of water turbine draft tube cone, it comprises centerbody, transverse tube, all air drain and suction tude, described equal air drain is annular, described suction tude is communicated with described equal air drain, described centerbody is arranged on described equal air drain and surrounds center into annular, be communicated with by described transverse tube between described centerbody with described equal air drain, described centerbody and described transverse tube all set out pore.Its structure is simple, reliable, saves the workload of power station maintenance, simplifies technique, reduce cost.
Description
Technical field
The utility model relates to vertical hydropower generator technical field, is specifically related to a kind of gas supplementary structure of water turbine draft tube cone.
Background technique
The tonifying Qi of existing tonifying Qi mode many employings alignment of shafts nature, its principle is that air enters draft tube from the alignment of shafts by pull of vacuum valve when draft tube vacuum reaches certain certain value, destroys draft tube vacuum.This tonifying Qi mode plays the vibrational energy caused due to waterpower reason and certain slackens effect, but its air compensation is all few, is often not enough to eliminate the pressure pulsation that draft tube eddy current causes.In addition, this tonifying Qi mode, no matter suction valve is placed on top or the bottom of main shaft, tonifying Qi noise is all very large.
As shown in Figure 3, Fig. 3 is spindle hole structural representation, this structural principle is when in draft tube, vacuum reaches certain value, aeration valve is opened automatically, air enters runner bottom from spindle hole by aeration valve, to improve the degree of vacuum at this place, thus reduce cavity cavitation, but because this tonifying Qi mode is difficult to the cavitation position of air being mended aerofoil profile and lower ring, therefore it is bad to improving aerofoil profile cavitation corrosion effect, air compensation is less again, be often not enough to the pressure pulsation that elimination draft tube vortex rope causes, and tonifying Qi noise is very large.
Model utility content
The utility model overcomes the deficiencies in the prior art, provides a kind of simple and reasonable, can improve the gas supplementary structure of the water turbine draft tube cone of work efficiency and safety reliability.
Consider the problems referred to above of prior art, an aspect disclosed in the utility model, the utility model by the following technical solutions:
A kind of gas supplementary structure of water turbine draft tube cone, it comprises centerbody, transverse tube, all air drain and suction tude, described equal air drain is annular, described suction tude is communicated with described equal air drain, described centerbody is arranged on the annular center that described equal air drain surrounds, be communicated with by described transverse tube between described centerbody with described equal air drain, described centerbody and described transverse tube all set out pore.
In order to realize the utility model better, further technological scheme is:
According to an embodiment of the present utility model, the angle of described transverse tube and horizontal plane is 8 ° ~ 11 °.
According to another embodiment of the present utility model, described transverse tube diameter is 100 ~ 150mm.
According to another embodiment of the present utility model, described transverse tube is 4.
The utility model can also be:
According to another embodiment of the present utility model, the air outlet hole quantity on described centerbody is greater than the air outlet hole quantity on described transverse tube.
Compared with prior art, one of the beneficial effects of the utility model are:
The gas supplementary structure of a kind of water turbine draft tube cone of the present utility model, it, compared with traditional air admission to main shaft central hole structure, has structure simpler, reliable, saves the workload of power station maintenance, simplifies technique, reduce cost; Gas supplementary structure due to this water turbine draft tube cone is convenient to position gas being filled into needs, and this gas supplementary structure itself is also a kind of current-stabilizing structure, and have the effect of broken vortex rope, therefore effect is better.
Accompanying drawing explanation
In order to clearer explanation present specification embodiment or technological scheme of the prior art, below the accompanying drawing used required in the description to embodiment or prior art is briefly described, apparently, the accompanying drawing that the following describes is only the reference to some embodiments in present specification, for those skilled in the art, when not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 shows the gas supplementary structure schematic top plan view of the water turbine draft tube cone according to the utility model embodiment;
Fig. 2 shows the gas supplementary structure side schematic view of the water turbine draft tube cone according to another embodiment of the utility model.
Fig. 3 is spindle hole structural representation.
Wherein, the name corresponding to the reference character in accompanying drawing is called:
1-centerbody, 2-transverse tube, the equal air drain of 3-, 4-suction tude.
Embodiment
Below in conjunction with embodiment, the utility model is described in further detail, but mode of execution of the present utility model is not limited thereto.
As shown in Figure 1, Fig. 1 shows the gas supplementary structure schematic top plan view of the water turbine draft tube cone according to the utility model embodiment, the gas supplementary structure of this water turbine draft tube cone is generally arranged on apart from ring (1/3 ~ 1/4) D1 (runner diameter) place under rotary wheel of water turbine, it is best tonifying Qi position herein, best air compensation can be obtained and play the effect of abundant weakening, be unlikely to again the efficiency reducing water turbine simultaneously; It can comprise centerbody 1, transverse tube 2, all air drain 3 and suction tude 4, described equal air drain 3 is annular, namely equal air drain 3 defines the gas pipeline of a ring-type, described suction tude 4 is communicated with described equal air drain 3, described centerbody 1 is arranged on described equal air drain 3 and surrounds center into annular, be communicated with by described transverse tube 2 between described centerbody 1 with described equal air drain 3, described centerbody 1 and described transverse tube 2 all set out pore.First gas is entered in equal air drain 3 by suction tude 4, then enters in transverse tube 2 and centerbody 1, then respectively by the air outlet hole on centerbody 1 and transverse tube 2 to the tonifying Qi of water turbine draft tube cone.
In general, the air outlet hole on transverse tube 2 leaves at land side, enters in transverse tube 2 to prevent water.Air outlet hole on centerbody 1 is many as far as possible, then unsuitable too many near the air outlet hole at draft tube surrounding place on transverse tube 2.Can select to make the air outlet hole quantity on described centerbody 1 to be greater than air outlet hole quantity on described transverse tube 2 in another embodiment.
Described transverse tube 2 can be many, preferably shows the situation that transverse tube 2 is 4 in Fig. 1.
As long as the diameter for transverse tube 2 can solve a technical problem of the present utility model, but in order to obtain best air compensation and play the effect of abundant weakening, be unlikely to again the efficiency reducing water turbine, the diameter of described transverse tube 2 can be preferably 100 ~ 150mm in another embodiment simultaneously.
As shown in Figure 2, Fig. 2 shows the gas supplementary structure side schematic view of the water turbine draft tube cone according to another embodiment of the utility model, and described transverse tube 2 can be 8 ° ~ 11 ° with horizontal plane angle.
In sum, when the runner bucket back side produces negative pressure, air enters in equal air drain 3 from suction tude 4, then is entered in centerbody 1 by transverse tube 2, thus destroys the vacuum of runner bottom, and cuts down eddy current.Gas supplementary structure itself because of this water turbine draft tube cone is a kind of current-stabilizing structure, can destroy the fluidised form that current are original, can obtain more suitable air compensation, can improve hydraulic turbine operation efficiency.
By the gas supplementary structure of water turbine draft tube cone of the present utility model, effectively alleviate the pressure pulsation in draft tube, improve the safety and stability performance of unit, thus alleviate the maintenance workload of power plant to a great extent.
In this specification, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiment, identical similar portion cross-reference between each embodiment.
Spoken of in this manual " embodiment ", " another embodiment ", " embodiment ", etc., refer to the specific features, structure or the feature that describe in conjunction with this embodiment and be included at least one embodiment of the application's generality description.Multiple place occurs that statement of the same race is not necessarily refer to same embodiment in the description.Furthermore, when describing specific features, structure or a feature in conjunction with any embodiment, what advocate is also drop in scope of the present utility model to realize this feature, structure or feature in conjunction with other embodiments.
Although be described the utility model with reference to multiple explanatory embodiment of the present utility model here, but, should be appreciated that, those skilled in the art can design a lot of other amendment and mode of execution, these amendments and mode of execution will drop within spirit disclosed in the present application and spirit.More particularly, in the scope of and claim open in the application, multiple modification and improvement can be carried out to the constituent elements of subject combination layout and/or layout.Except the modification of carrying out constituent elements and/or layout is with except improvement, to those skilled in the art, other purposes also will be obvious.
Claims (5)
1. the gas supplementary structure of a water turbine draft tube cone, it is characterized in that it comprises centerbody (1), transverse tube (2), all air drain (3) and suction tude (4), described equal air drain (3) is annular, described suction tude (4) is communicated with described equal air drain (3), described centerbody (1) is arranged on the annular center that described equal air drain (3) surrounds, be communicated with by described transverse tube (2) between described centerbody (1) with described equal air drain (3), described centerbody (1) and described transverse tube (2) all set out pore.
2. the gas supplementary structure of water turbine draft tube cone according to claim 1, is characterized in that described transverse tube (2) is 8 ° ~ 11 ° with the angle of horizontal plane.
3. the gas supplementary structure of water turbine draft tube cone according to claim 1, is characterized in that the diameter of described transverse tube (2) is 100 ~ 150mm.
4. the gas supplementary structure of water turbine draft tube cone according to claim 1, is characterized in that described transverse tube (2) is 4.
5. the gas supplementary structure of water turbine draft tube cone according to claim 1, the air outlet hole quantity that it is characterized in that on described centerbody (1) is greater than the air outlet hole quantity on described transverse tube (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520144855.1U CN204610125U (en) | 2015-03-13 | 2015-03-13 | The gas supplementary structure of water turbine draft tube cone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520144855.1U CN204610125U (en) | 2015-03-13 | 2015-03-13 | The gas supplementary structure of water turbine draft tube cone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204610125U true CN204610125U (en) | 2015-09-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520144855.1U Expired - Fee Related CN204610125U (en) | 2015-03-13 | 2015-03-13 | The gas supplementary structure of water turbine draft tube cone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204610125U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113958439A (en) * | 2021-11-25 | 2022-01-21 | 国网新源控股有限公司 | Method and device for weakening turbine tail water vortex band |
-
2015
- 2015-03-13 CN CN201520144855.1U patent/CN204610125U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113958439A (en) * | 2021-11-25 | 2022-01-21 | 国网新源控股有限公司 | Method and device for weakening turbine tail water vortex band |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 610000, Datong Town, Qingbaijiang District, Sichuan City, Chengdu province (Industrial Park) Patentee after: Chengdu Tianxiang environmental Limited by Share Ltd Address before: 610000, Datong Town, Qingbaijiang District, Sichuan City, Chengdu province (Industrial Park) Patentee before: Chengdu Tianbao Heavy Industry Co., Ltd. |
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| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20180907 Granted publication date: 20150902 |
|
| PD01 | Discharge of preservation of patent | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20210907 Granted publication date: 20150902 |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150902 Termination date: 20200313 |