CN204419436U - The tail water that prevents for Francis turbine alignment of shafts air compensating system is turned one's coat device - Google Patents
The tail water that prevents for Francis turbine alignment of shafts air compensating system is turned one's coat device Download PDFInfo
- Publication number
- CN204419436U CN204419436U CN201520071246.8U CN201520071246U CN204419436U CN 204419436 U CN204419436 U CN 204419436U CN 201520071246 U CN201520071246 U CN 201520071246U CN 204419436 U CN204419436 U CN 204419436U
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- China
- Prior art keywords
- ball float
- float
- housing
- tail water
- water
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- 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
A kind of tail water that prevents for Francis turbine alignment of shafts air compensating system is turned one's coat device, comprise housing, housing upper end connects aeration valve, housing lower end is provided with blowdown pipe, ball float is provided with in housing, multiple guide rod is installed with around ball float, float valve sealing clamp is provided with above ball float, float valve sealing clamp bottom is provided with float valve sealing, cushion pad is provided with below ball float, be positioned at cushion pad in housing and have filter screen, water turbine is under non-tonifying Qi state, ball float contacts with float valve canned linear and forms hermetic seal under the active force of water, during air supplement of turbine, ball float falls within cushion pad under gravity.The utility model, when unit is in non-optimal operating mode, produces vacuum in tail water region.When degree of vacuum reaches certain value, aeration valve overcomes opening of valve disc weight and damping device resistance under atmospheric pressure, from the tonifying Qi of trend tail water, and then weakens the energy of vortex rope in draft tube, reduce consequent pressure pulsation, ensure the stable operation of unit.
Description
Technical field
The utility model relates to a kind of tail water that prevents for Francis turbine alignment of shafts air compensating system and returns the design of water apparatus structure, relates to Francis turbine air compensating system field.
Background technique
Francis turbine primarily of 1, water part: spiral case; 2, water-guiding element: seat ring, top cover, stator and operating structure thereof; 3, rotatable parts: runner, main shaft, main shaft seal, water pilot bearing, making-up air device; 4, sluicing parts: the parts compositions such as draft tube.
The stable operation of Francis hydroturbine generator set not only comprises unit and can realize smooth running in certain head band certain load; without obviously vibration, cavitation corrosion, eddy current and pressure pulsation; but also should comprise unit startup-shutdown, increase the transient process operating mode such as removal of load under can realize a smooth transition, large vibration without exception, noise, cavitation corrosion, eddy current and pressure pulsation and the destruction caused thus.And affect the main factor of Francis turbine stable operation and be; Draft tube vortex rope is a kind of phenomenon that Francis turbine must occur under partial load condition, is also one of key factor affecting unit vibration and stability, and along with the increasing of machine packet size, the impact of vortex rope on set steady is tending towards increasing.
Summary of the invention
The utility model is the deficiency in order to overcome existing for above-mentioned prior art, provides a kind of tail water that prevents for Francis turbine alignment of shafts air compensating system to turn one's coat device, back-water-proof while ensureing the stable operation of water turbine units.
A kind of tail water that prevents for Francis turbine alignment of shafts air compensating system is turned one's coat device, it comprises housing, housing upper end connects aeration valve, housing lower end is provided with blowdown pipe, ball float is provided with in housing, multiple guide rod is installed with around ball float, float valve sealing clamp is provided with above ball float, float valve sealing clamp bottom is provided with float valve sealing, cushion pad is provided with below ball float, be positioned at cushion pad in housing and have filter screen, water turbine is under non-tonifying Qi state, ball float contacts with float valve canned linear and forms hermetic seal under the active force of water, during air supplement of turbine, ball float falls within cushion pad under gravity.
Above-mentioned housing upper-end surface is provided with seal groove, is provided with O RunddichtringO in seal groove.
The lower end of above-mentioned housing is provided with method hurdle.
Uniform 8 guide rods outside above-mentioned ball float, rise at ball float and play the guiding role in dropping process and guarantee that ball float can arbitrary directional rolling.
The utility model has following beneficial effect:
1, adopt free floating ball type aeration valve structure, adopt stainless steel material.Housing upper connects aeration valve, and connecting flange faces adopts two O to enclose seal groove, can effectively prevent objective factor from causing float valve sealing configuration percolating water to leak outside along flanged surface and thread filament hole.The rubber design of float valve guide rod and cushion pad can effectively prevent ball float from clashing in rising and dropping process and deformation occurs, and that guarantees that ball float and float valve seal effectively linearly contacts, and formation seals.Cushion pad base and filter screen adopt gusset welding manner to be connected can enable gas circulate.Cushion pad base bottom connects filter screen, can tackle dregs and floating debris in river, guarantee that ball float can move freely.
2, alignment of shafts air compensating system; When unit is in non-optimal operating mode, produce vacuum in tail water region.When degree of vacuum reaches certain value, aeration valve overcomes opening of valve disc weight and damping device resistance under atmospheric pressure, from the tonifying Qi of trend tail water, and then weakens the energy of vortex rope in draft tube, reduce consequent pressure pulsation, ensure the stable operation of unit.Alignment of shafts making-up air device is made up of aeration valve, float valve, butterfly valve, center blowdown pipe and the auxiliary piping system such as support, external feed stream draining thereof.Float valve is used for back-water-proof, and butterfly valve is used for compressor emergency shutdown maintenance back-water-proof.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Fig. 1 is structural representation of the present utility model.
Embodiment
As shown in fig. 1, the utility model relates to a kind of tail water that prevents for Francis turbine alignment of shafts air compensating system and to turn one's coat device, it comprises housing 9, housing upper end connects aeration valve, housing lower end is provided with blowdown pipe, ball float 5 is provided with in housing, multiple guide rod 6 is installed with around ball float, float valve sealing clamp 3 is provided with above ball float, float valve sealing clamp bottom is provided with float valve sealing 4, cushion pad 7 is provided with below ball float, be positioned at cushion pad in housing and have filter screen 8, water turbine is under non-tonifying Qi state, ball float contacts with float valve canned linear and forms hermetic seal under the active force of water, during air supplement of turbine, ball float falls within cushion pad under gravity.Described housing upper-end surface is provided with seal groove, is provided with O RunddichtringO 1,2 in seal groove.The lower end of described housing is provided with method hurdle 10.
Uniform 8 guide rods outside described ball float, rise at ball float and play the guiding role in dropping process and guarantee that ball float can arbitrary directional rolling.
This novel employing free floating ball type aeration valve structure, adopts stainless steel material.Housing upper connects aeration valve, and connecting flange faces adopts two O to enclose seal groove, can effectively prevent objective factor from causing float valve sealing configuration percolating water to leak outside along flanged surface and thread filament hole.The rubber design of float valve guide rod and cushion pad can effectively prevent ball float from clashing in rising and dropping process and deformation occurs, and that guarantees that ball float and float valve seal effectively linearly contacts, and formation seals.Cushion pad base and filter screen adopt gusset welding manner to be connected can enable gas circulate.Cushion pad base bottom connects filter screen, can tackle dregs and floating debris in river, guarantee that ball float can move freely.
This novel working principle:
When unit is in optimum operating condition and outage state; water is full of in the blowdown pipe that this device bottom connects; as arrow in Fig. 1; pass through strainer filtering; enter in float valve along gap between gusset; under the effect of water buoyancy and pressure in draft tube, ball float rises and also contacts with float valve canned linear, thus reaches stagnant water effect.
When unit be in run under non-optimum operating mode time, when tail water region vacuum values is greater than the setting resistance of aeration valve, aeration valve is opened under atmospheric pressure, gas enters float valve by aeration valve, ball float falls within cushion pad under gravity, as arrow in Fig. 1, gas enters runner cavity of resorption by float valve and blowdown pipe, completes tonifying Qi.
Claims (4)
1. to turn one's coat device for the tail water that prevents of Francis turbine alignment of shafts air compensating system for one kind, it comprises housing (9), housing upper end connects aeration valve, housing lower end is provided with blowdown pipe, ball float (5) is provided with in housing, multiple guide rod (6) is installed with around ball float, float valve sealing clamp (3) is provided with above ball float, float valve sealing clamp bottom is provided with float valve sealing (4), cushion pad (7) is provided with below ball float, be positioned at cushion pad in housing and have filter screen (8), water turbine is under non-tonifying Qi state, ball float contacts with float valve canned linear and forms hermetic seal under the active force of water, during air supplement of turbine, ball float falls within cushion pad under gravity.
2. the tail water that prevents for Francis turbine alignment of shafts air compensating system according to claim 1 is turned one's coat device, is characterised in that: described housing upper-end surface is provided with seal groove, is provided with O RunddichtringO (1,2) in seal groove.
3. the tail water that prevents for Francis turbine alignment of shafts air compensating system according to claim 1 and 2 is turned one's coat device, is characterised in that: the lower end of described housing is provided with method hurdle (10).
4. the tail water that prevents for Francis turbine alignment of shafts air compensating system according to claim 1 and 2 is turned one's coat device, be characterised in that: uniform 8 guide rods outside described ball float, rise at ball float and play the guiding role in dropping process and guarantee that ball float can arbitrary directional rolling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520071246.8U CN204419436U (en) | 2015-02-02 | 2015-02-02 | The tail water that prevents for Francis turbine alignment of shafts air compensating system is turned one's coat device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520071246.8U CN204419436U (en) | 2015-02-02 | 2015-02-02 | The tail water that prevents for Francis turbine alignment of shafts air compensating system is turned one's coat device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204419436U true CN204419436U (en) | 2015-06-24 |
Family
ID=53469814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520071246.8U Expired - Fee Related CN204419436U (en) | 2015-02-02 | 2015-02-02 | The tail water that prevents for Francis turbine alignment of shafts air compensating system is turned one's coat device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204419436U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107587969A (en) * | 2017-10-30 | 2018-01-16 | 贵州乌江水电开发有限责任公司构皮滩发电厂 | A kind of big axle making-up air device of turbine-generator units and method |
| CN107781495A (en) * | 2017-12-05 | 2018-03-09 | 博纳斯威阀门股份有限公司 | A kind of combined type air inlet and exhaust valve of water hammer-resistant structure |
| CN112031981A (en) * | 2020-09-18 | 2020-12-04 | 张宏杰 | Generator main shaft air supplement pipe drainage system |
-
2015
- 2015-02-02 CN CN201520071246.8U patent/CN204419436U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107587969A (en) * | 2017-10-30 | 2018-01-16 | 贵州乌江水电开发有限责任公司构皮滩发电厂 | A kind of big axle making-up air device of turbine-generator units and method |
| CN107781495A (en) * | 2017-12-05 | 2018-03-09 | 博纳斯威阀门股份有限公司 | A kind of combined type air inlet and exhaust valve of water hammer-resistant structure |
| CN112031981A (en) * | 2020-09-18 | 2020-12-04 | 张宏杰 | Generator main shaft air supplement pipe drainage system |
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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: 20150624 Termination date: 20210202 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |