CN206360841U - A kind of turbine draft tube making-up air device - Google Patents
A kind of turbine draft tube making-up air device Download PDFInfo
- Publication number
- CN206360841U CN206360841U CN201621423032.3U CN201621423032U CN206360841U CN 206360841 U CN206360841 U CN 206360841U CN 201621423032 U CN201621423032 U CN 201621423032U CN 206360841 U CN206360841 U CN 206360841U
- Authority
- CN
- China
- Prior art keywords
- draft tube
- tonifying
- turbine
- pipe
- air device
- 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 is related to vacuum, the device to turbine draft tube tonifying Qi in air supply equipment of hydraulic turbine, more particularly to a kind of destruction turbine draft tube.The turbine draft tube making-up air device includes being provided with gas supplementing opening on the blowdown pipe being arranged in draft tube, the tube wall of blowdown pipe, it is characterised in that：The turbine draft tube making-up air device also includes an air admission valve, and the blowdown pipe is provided with some tonifying Qi branch pipes, the tube wall of tonifying Qi branch pipe and is provided with gas supplementing opening, and the blowdown pipe passes through a tonifying Qi branch pipe and air admission valve UNICOM.The turbine draft tube making-up air device that the utility model is provided, considerably increase the air compensation of draft tube, the vacuum that can effectively destroy in draft tube, the pressure in draft tube is set to increase, mitigate cavitation erosion, ensure the stabilization of unit operation, while reducing regular maintenance amount, reduction maintenance cost, saving the energy.
Description
Technical field
The utility model is related to vacuum in air supply equipment of hydraulic turbine, more particularly to a kind of destruction turbine draft tube, given
The device of turbine draft tube tonifying Qi.
Background technology
The existing hydraulic turbine produces huge vacuum in its spiral case, caused when departing from nominal operating conditions or shutting down
The vibration of water turbine set, can cause cavitation erosion to the blade of the hydraulic turbine, influence the service life of the hydraulic turbine.In order to destroy in the hydraulic turbine
Vacuum, making-up air device is generally set in the draft tube of the hydraulic turbine, mainly there is Francis turbine device, short tube making-up air device
Deng, a kind of vacuum gulp valve for tail water pipe of water turbine as disclosed in Authorization Notice No. is CN201786538U, including bonnet, with tail
The valve body of waterpipe jointing, valve plug, spring is characterized in that：Bonnet is fixedly connected with valve body by fastener, bonnet lower edge with
Valve body top edge is brought into close contact, and valve body is that plug holes are carried on hollow cavity, bonnet, and spring one end is fixedly connected with the valve body or sat
In valve body, the other end is fixedly connected with or held valve plug with valve plug, and spring is in compressive state, and the diameter of plug holes is less than valve plug
Maximum gauge, the cross-sectional area of plug holes is less than the maximum cross-section area of valve plug.
Existing making-up air device all has that such as Francis turbine device easily comes off, short tube making-up air device
Air compensation deficiency etc..As in recent years, with the raising of hydraulic turbine capacity and application head, tailwater level makes draft tube also with raising
Tonifying Qi is more difficult.Therefore it is badly in need of a kind of big air compensation, energy effective guarantee stable operation of unit, the making-up air device of economical and energy saving.
Utility model content
In order to solve the above problems, the utility model provides a kind of turbine draft tube making-up air device, including is arranged at
Gas supplementing opening is provided with blowdown pipe in draft tube, the tube wall of blowdown pipe, it is characterised in that：The turbine draft tube making-up air device
Also include an air admission valve, the blowdown pipe is provided with some tonifying Qi branch pipes, the tube wall of tonifying Qi branch pipe and is provided with gas supplementing opening,
The blowdown pipe passes through a tonifying Qi branch pipe and air admission valve UNICOM.
Further, the blowdown pipe is arranged at the center of draft tube.
Further, the blowdown pipe is provided with three tonifying Qi branch pipes, except with addition to the tonifying Qi branch pipe that hollow destructive valve is connected,
Another two is enclosed construction with one end that tonifying Qi branch pipe is not connected with blowdown pipe.
Further, the tonifying Qi branch pipe is uniformly distributed centered on blowdown pipe in same level.
The utility model has the advantages that：The turbine draft tube making-up air device that the utility model is provided, significantly
The air compensation of draft tube is added, the vacuum that can effectively destroy in draft tube rises the pressure in draft tube, mitigate gas
Erosion destruction, the stabilization of guarantee unit operation, while reducing regular maintenance amount, reduction maintenance cost, saving the energy.
Brief description of the drawings
The utility model is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 is the structural representation of the present embodiment turbine draft tube making-up air device.
Fig. 2 is the front view of the present embodiment turbine draft tube making-up air device.
Embodiment
In order to be better understood from the technical solution of the utility model, the utility model is described in detail below in conjunction with the accompanying drawings and provides
Embodiment.
Shown in reference picture 1, Fig. 2, a kind of turbine draft tube making-up air device, including the blowdown pipe being arranged in draft tube 1
2nd, tonifying Qi branch pipe 3,4,5 and air admission valve 6；Blowdown pipe 2 is arranged at the center in draft tube 1, and benefit is provided with its tube wall
Gas port 21, same level is provided with three tonifying Qi branch pipes 3,4,5, three tonifying Qi branch pipes and opened respectively centered on blowdown pipe 2
Have a gas supplementing opening 31,41,51, the two ends of tonifying Qi branch pipe 3 respectively with blowdown pipe 2 and the UNICOM of air admission valve 6, another two is with tonifying Qi branch
Pipe 4,5 one end and the UNICOM's other end of blowdown pipe 2 are enclosed construction.
Above-mentioned turbine draft tube making-up air device, considerably increases the air compensation of draft tube, can effectively destroy draft tube
Interior vacuum, rises the pressure in draft tube, mitigates cavitation erosion, the stabilization of unit operation is ensured, while reducing day
Normal maintenance, reduction maintenance cost, the saving energy.
It is described above, only the utility model preferred embodiment, therefore the utility model implementation can not be limited with this
Scope, i.e., the equivalent changes and modifications made according to present utility model application the scope of the claims and description all should still belong to this reality
In the range of being covered with new patent.
Claims (4)
1. it is provided with a kind of turbine draft tube making-up air device, including the blowdown pipe being arranged in draft tube, the tube wall of blowdown pipe
Gas supplementing opening, it is characterised in that：The turbine draft tube making-up air device also includes an air admission valve, and the blowdown pipe is provided with
Gas supplementing opening is provided with some tonifying Qi branch pipes, the tube wall of tonifying Qi branch pipe, the blowdown pipe passes through a tonifying Qi branch pipe and vacuum breaking
Valve UNICOM.
2. turbine draft tube making-up air device according to claim 1, it is characterised in that：The blowdown pipe is arranged at tail water
The center of pipe.
3. turbine draft tube making-up air device according to claim 1, it is characterised in that：The blowdown pipe is provided with three
Tonifying Qi branch pipe, except with addition to the tonifying Qi branch pipe that hollow destructive valve is connected, one end that another two is not connected with tonifying Qi branch pipe with blowdown pipe
For enclosed construction.
4. turbine draft tube making-up air device according to claim 3, it is characterised in that：The tonifying Qi branch pipe is with blowdown pipe
Centered on be uniformly distributed in same level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621423032.3U CN206360841U (en) | 2016-12-23 | 2016-12-23 | A kind of turbine draft tube making-up air device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621423032.3U CN206360841U (en) | 2016-12-23 | 2016-12-23 | A kind of turbine draft tube making-up air device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206360841U true CN206360841U (en) | 2017-07-28 |
Family
ID=59376132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621423032.3U Expired - Fee Related CN206360841U (en) | 2016-12-23 | 2016-12-23 | A kind of turbine draft tube making-up air device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206360841U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110886673A (en) * | 2019-11-26 | 2020-03-17 | 清华大学 | Draft tube and method for reducing water pressure pulsation and pressure gradient of water turbine |
| 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 |
| CN114215676A (en) * | 2021-11-25 | 2022-03-22 | 国网新源控股有限公司 | Method for reducing pressure pulsation of tail water of water turbine |
-
2016
- 2016-12-23 CN CN201621423032.3U patent/CN206360841U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110886673A (en) * | 2019-11-26 | 2020-03-17 | 清华大学 | Draft tube and method for reducing water pressure pulsation and pressure gradient of water turbine |
| CN110886673B (en) * | 2019-11-26 | 2021-06-08 | 清华大学 | Draft tube and method for reducing water pressure pulsation and pressure gradient of water turbine |
| 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 |
| CN114215676A (en) * | 2021-11-25 | 2022-03-22 | 国网新源控股有限公司 | Method for reducing pressure pulsation of tail water of water turbine |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170728 Termination date: 20181223 |