CN201865829U - Parse-type air compensating valve group for water turbine generator - Google Patents
Parse-type air compensating valve group for water turbine generator Download PDFInfo
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- CN201865829U CN201865829U CN2010206233746U CN201020623374U CN201865829U CN 201865829 U CN201865829 U CN 201865829U CN 2010206233746 U CN2010206233746 U CN 2010206233746U CN 201020623374 U CN201020623374 U CN 201020623374U CN 201865829 U CN201865829 U CN 201865829U
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- turbine generator
- flange
- air compensating
- valve group
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- 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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Abstract
The utility model relates to an air compensating device for a central hole of a main shaft of a water turbine generator unit, in particular to a parse-type air compensating valve group for a water turbine generator, which mainly solves the technical problems that as the air compensating device is arranged on top of the power generator or in the power generator, the air compensating device in the prior art is not easy to maintain and can be maintained only when a power station is overhauled, so that time and effort and the like are wasted. The parse-type air compensating valve group comprises a main shaft flange (1), and is characterized in that more than two flange holes (2) are uniformly arranged on the main shaft flange (1) in a distributing way; each flange hole is provided with a valve shell (3); one end of the valve shell is connected with a valve cover (4); the valve cover (4) is provided with an air hole (5) which is provided with a valve body (6) in a sealing way; and a valve shaft (7) is connected on the valve body (6) in a penetrating way.
Description
Technical field
The utility model relates to a kind of hydraulic generator unit air admission to main shaft central hole device, especially relates to a kind of hydraulic turbine generator march-past aeration valve group.
Background technique
When Francis turbine departs from the optimum operating condition operation, because there is pressure pulsation to some extent in water flow disturbance.Generally when 40%～70% nominal output, the whirlpool band appears in the draft tube, because whirlpool band strong disturbance, or its frequency overlaps with the unit natural frequency and produces resonance, to cause unit vibration or load swing, the effect of making-up air device is exactly when this unstable period occurring, mends air, so as to absorbing and reduction vortex intensity, improve the running state of unit.Chinese patent discloses a kind of Francis turbine air admission to main shaft central hole device (notice of authorization number: CN 1904352A), it places the top of generator, it comprises standing part and rotating part, rotating part comprises aeration valve, tonifying Qi valve seat, tonifying Qi support and fluted disc speed measuring device, and rotating part is fixed on the electric machine main shaft and with electric machine main shaft and rotates; Standing part comprises water spilage tray, condensation discharge pipe, envelope valve guard shield, suction tude and waste pipe, water spilage tray is placed on the slip ring cover of generator, the water of water spilage tray drains into sump through the condensation discharge pipe, air enters the tonifying Qi chamber through suction tude, by aeration valve through spindle hole, runner epicoele to draft tube and Cavitation in Hydraulic Machinery zone tonifying Qi; Adopt labyrinth seal between rotating part and the standing part, the monolateral gap of 8-10 times of top guide bearing is chosen according to installing and the unit operation needs in the gap of labyrinth seal; The gross area of suction tude is not less than the aeration valve orifice area, and the gross area of waste pipe is not less than 4-6 times that seals the area that leaks.But this making-up air device is installed in the top of generator, its complex structure, and cost is higher; Or making-up air device is installed in runner inside, and keep in repair comparatively difficultly, only when the overhaul of water power plant, could overhaul it, waste time and energy.
The model utility content
The utility model provides a kind of hydraulic turbine generator composition as listed formula aeration valve group, and it mainly is to solve the top that the existing in prior technology making-up air device is installed in generator, its complex structure; Or making-up air device is installed in runner inside, and keep in repair comparatively difficultly, only when the overhaul of water power plant, could overhaul it, technical problem such as waste time and energy.
Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals:
Hydraulic turbine generator march-past aeration valve group of the present utility model, comprise spindle flange, be evenly equipped with the flange hole more than 2 on the described spindle flange, all be provided with a valve casing on each flange hole, valve casing one end is connected with valve gap, valve gap is provided with vent, is sealed with valve body on the vent, and cross-under has valve shaft on the valve body.Many uniform being installed on the spindle flange of aeration valve group are contained in the aeration valve at rotary wheel of water turbine inside or generator top before having replaced, can overhaul when compressor emergency shutdown.After valve body moves right, can open vent, i.e. valve opening, air is mended into the runner bottom by flange hole on the spindle flange and center hole.Valve body can be closed vent, i.e. valve closing behind left movement.
As preferably, be fixed with gland by nut on the described valve shaft, be provided with spring between gland and the valve gap.When forming vacuum in the spindle hole, spring can promote valve body to the right automatically, thereby opens whole valve.
As preferably, be provided with sealing gasket between described valve gap and the valve body, the valve gap end is provided with cell body, and Sealing is embedded in the cell body by pressure by pressing plate.Sealing gasket can prevent that air from revealing away from the slit between valve gap and the valve body.
As preferably, be provided with sealing gasket between described spindle flange and the valve gap, can prevent that air from revealing away from the slit between spindle flange and the valve gap.
Therefore, the utility model is contained in an aeration valve at rotary wheel of water turbine inside or generator top with many uniform being installed on the spindle flange of aeration valve group before having replaced, can overhaul when compressor emergency shutdown, and is time saving and energy saving, simple and reasonable for structure.
Description of drawings
Accompanying drawing 1 is a kind of structural representation of the present utility model.
Component, position and numbering among the figure: spindle flange 1, flange hole 2, valve casing 3, valve gap 4, vent 5, valve body 6, valve shaft 7, nut 8, gland 9, spring 10, sealing gasket 11, pressing plate 12, spindle hole 13.
Embodiment
Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment: the hydraulic turbine generator march-past aeration valve group that this is routine as Fig. 1, has a spindle flange 1, be evenly equipped with 2 flange holes 2 on the spindle flange, all be provided with a valve casing 3 on each flange hole, valve casing one end is connected with valve gap 4, is provided with sealing gasket 11 between spindle flange and the valve gap.Valve gap is provided with vent 5, is sealed with valve body 6 on the vent, is provided with sealing gasket 11 between valve gap and the valve body, and the valve gap end is provided with cell body, and Sealing is pressed by pressing plate 12 and is embedded in the cell body.Cross-under has valve shaft 7 on the valve body.Be fixed with gland 9 by nut 8 on the valve shaft, be provided with spring 10 between gland and the valve gap.
During use, form vacuum in spindle hole 13, pressure is during greater than spring 10 elastic force, and valve body 6 drives valve shafts 7 and the pressing plate 12, the sealing gasket 11 that are connected on the valve shaft move right simultaneously, be valve opening, air mends the runner bottom by flange hole on the spindle flange 12 and spindle hole 13; When the spindle hole internal pressure was malleation, valve body was moved to the left and is close to valve gap, i.e. valve closing.
The above only is a specific embodiment of the utility model, but structure characteristic of the present utility model is not limited thereto, any those skilled in the art is in field of the present utility model, and variation of being done or modification all are encompassed among the claim of the present utility model.
Claims (4)
1. hydraulic turbine generator march-past aeration valve group, comprise spindle flange (1), it is characterized in that being evenly equipped with on the described spindle flange (1) flange hole (2) more than 2, all be provided with a valve casing (3) on each flange hole, valve casing one end is connected with valve gap (4), valve gap is provided with vent (5), is sealed with valve body (6) on the vent, and cross-under has valve shaft (7) on the valve body.
2. hydraulic turbine generator march-past aeration valve group according to claim 1 is characterized in that described valve shaft (7) upward is fixed with gland (9) by nut (8), is provided with spring (10) between gland and the valve gap (4).
3. hydraulic turbine generator march-past aeration valve group according to claim 1 and 2 is characterized in that being provided with sealing gasket (11) between described valve gap (4) and the valve body (6), and the valve gap end is provided with cell body, and Sealing is pressed by pressing plate (12) and is embedded in the cell body.
4. hydraulic turbine generator march-past aeration valve group according to claim 1 and 2 is characterized in that being provided with sealing gasket (11) between described spindle flange (1) and the valve gap (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206233746U CN201865829U (en) | 2010-11-25 | 2010-11-25 | Parse-type air compensating valve group for water turbine generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206233746U CN201865829U (en) | 2010-11-25 | 2010-11-25 | Parse-type air compensating valve group for water turbine generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201865829U true CN201865829U (en) | 2011-06-15 |
Family
ID=44136986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206233746U Expired - Fee Related CN201865829U (en) | 2010-11-25 | 2010-11-25 | Parse-type air compensating valve group for water turbine generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201865829U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116906256A (en) * | 2023-09-13 | 2023-10-20 | 哈尔滨电机厂有限责任公司 | Water turbine natural air supplementing method based on stability index of hydroelectric generating set |
-
2010
- 2010-11-25 CN CN2010206233746U patent/CN201865829U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116906256A (en) * | 2023-09-13 | 2023-10-20 | 哈尔滨电机厂有限责任公司 | Water turbine natural air supplementing method based on stability index of hydroelectric generating set |
| CN116906256B (en) * | 2023-09-13 | 2024-03-01 | 哈尔滨电机厂有限责任公司 | Water turbine natural air supplementing method based on stability index of hydroelectric generating set |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110615 Termination date: 20131125 |