CN207333088U - A kind of big axis making-up air device of turbine-generator units - Google Patents
A kind of big axis making-up air device of turbine-generator units Download PDFInfo
- Publication number
- CN207333088U CN207333088U CN201721418090.1U CN201721418090U CN207333088U CN 207333088 U CN207333088 U CN 207333088U CN 201721418090 U CN201721418090 U CN 201721418090U CN 207333088 U CN207333088 U CN 207333088U
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- China
- Prior art keywords
- aeration valve
- ball
- cock assembly
- valve
- turbine
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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.)
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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
Abstract
The utility model discloses a kind of big axis making-up air device of turbine-generator units, including the aeration valve at the top of generator, the catchment covers for containing the water from aeration valve outflow are provided outside in the aeration valve upper end, the catchment covers form enclosure space with aeration valve upper end outside wall surface, and the upper surface of catchment covers is provided with ball-cock assembly；The utility model installs a porous ball-cock assembly additional on the basis of current aeration valve is retained at the top of aeration valve, and in normal operating conditions, which is in fully open position, and the normal tonifying Qi under unit operation operating mode is carried out by aeration valve；When aeration valve valve disc bad seals or be not closed completely there is leak when, leak can be enclosed in ball-cock assembly by ball-cock assembly, play the role of secondary seal, prevent because the leak of buffer-type aeration valve valve disc trigger accident.
Description
Technical field
A kind of big axis making-up air device of turbine-generator units is the utility model is related to, belongs to hydrogenerator tonifying Qi technology neck
Domain.
Background technology
Power plant's air supplement of turbine mainly uses big axis center tonifying Qi at present, and aeration valve is installed at the top of generator, is generating electricity
One Hand-operated butterfly valve of installation is common valve as isolating valve, the type valve in machine rotor centerbody, is typically only capable in static shape
Used under state, in unit actual moving process, since the powerful centrifugal force of generation can make butterfly valve gear outer worm screw operate machine
The phenomenon that the accessories such as structure are thrown out of.Constantly be found in the inspection of unit rotating part and unit maintenance, although can in time to its into
Luggage is answered, but could not be tackled the problem at its root.In addition, part of generating units in rotor center body due to employing web structure, it is interior
Portion's narrow space, butterfly valve band operating mechanism can not be installed, just remove operating mechanism when mounted, be only mounted with butterfly valve body,
Do not possess the function of switch valve.Such as occur under the above situation and big axis center aeration valve failure leak occurs, it is necessary to emergency cut-off
It but can not in time be operated when isolating valve is overhauled and close valve cut-out water, there are serious security risk, in some instances it may even be possible to sends out
Unboiled water floods workshop accident.The security reliability of aeration valve directly affects the safe and stable operation of unit, especially flood season Gao Shui
When position.
Utility model content
The technical problems to be solved in the utility model is：There is provided a kind of turbine-generator units big axis making-up air device, to solve
When aeration valve breaks down or valve deck is by foreign matter casey, water enters tonifying Qi room and has little time the thing of water logging unit caused by discharging
Therefore.
The technical solution of the utility model is：A kind of big axis making-up air device of turbine-generator units, including installed in generator
The aeration valve at top, the catchment covers for containing the water from aeration valve outflow, the collection are provided outside in the aeration valve upper end
Water cover forms enclosure space with aeration valve upper end outside wall surface, and the upper surface of catchment covers is provided with ball-cock assembly.
The ball-cock assembly is porous ball-cock assembly, compared with single hole ball-cock assembly, 1, porous ball-cock assembly inflow-rate of water turbine it is big, it is completely full
Sufficient unit tonifying Qi needs；2nd, porous ball-cock assembly good seal performance；3rd, porous ball-cock assembly good pressure-resistant performance；The floating ball of porous ball-cock assembly
Gross mass is small, and buoyancy and dead weight difference are big, and buoyancy is more than single hole ball-cock assembly；4th, Integrate porous ball-cock assembly quality is small, so rotating
Inertia is small, does not influence top guide bearing service life.
The porous ball-cock assembly is evenly arranged on catchment covers by circumferencial direction
The catchment covers are bolted on flange.
Increase ball-cock assembly, the basic principle of ball-cock assembly in tonifying Qi pipeline：When inflow sets up sealing more than water yield
Pressure, while when floating ball rises to valve port position under buoyancy, the excessive effect of cut-off water is played, even if not setting up close
Seal pressure have a small amount of water it is excessive when, generating set drainage pipeline can also discharge these excessive water.
The beneficial effects of the utility model are：The utility model is on the basis of current aeration valve is retained, on aeration valve top
Portion installs a porous ball-cock assembly additional.In normal operating conditions, which is in fully open position, and unit operation is carried out by aeration valve
Normal tonifying Qi under operating mode；When aeration valve valve disc bad seals or be not closed completely there is leak when, ball-cock assembly can close leak
In ball-cock assembly, play the role of secondary seal, prevent from, because the leak of buffer-type aeration valve valve disc triggers accident, from operational effect coming
See the normal work for having no effect on former aeration valve.In addition, ball-cock assembly is placed on aeration valve upper end, be not only convenient for porous float valve into
Row maintenance, and when aeration valve breaks down and cannot close, acted on first on the valve deck of aeration valve after coming on water hammer, so
The energy of water hammer is greatly weakened, avoids water hammer from acting directly on porous ball-cock assembly, so that porous float valve extends
Service life.The utility model has simple in structure, easy for installation, highly practical, the features such as improvement expenses is low.
Brief description of the drawings
Fig. 1 is the big axis tonifying Qi valve arrangement of traditional turbine-generator units；
Fig. 2 is the structure diagram of the utility model；
Fig. 3 is the schematic diagram of catchment covers upper surface；
In figure：1st, aeration valve, 2, flange, 3, catchment covers, 4, ball-cock assembly.
Embodiment
It is new to this practicality below in conjunction with attached drawing to make the purpose of this utility model, technical solution and advantage clearer
Type is described in further detail.
Referring to figs. 2 and 3 the big axis making-up air device of a kind of turbine-generator units of the utility model embodiment, in traditional structure
（Fig. 1）In transformed, including original aeration valve 1 and flange 2 at the top of the generator is pacified outside 1 upper end of aeration valve
Equipped with the catchment covers 3 for containing the water flowed out from aeration valve 1, catchment covers 3 are bolted on flange 2, catchment covers 3 with
1 upper end outside wall surface of aeration valve, flange 2 form enclosure space, and ball-cock assembly 4 is provided with the upper surface of catchment covers 3.
As further improvement of this embodiment, ball-cock assembly 4 selects porous ball-cock assembly 4, is evenly arranged in by circumferencial direction
On 3 upper surface of catchment covers.
Above content is to combine specific preferred embodiment further detailed description of the utility model, it is impossible to
Assert that the specific implementation of the utility model is confined to these explanations.For the ordinary skill of the utility model technical field
For personnel, without departing from the concept of the premise utility, some simple deduction or replace can also be made, should all be regarded
To belong to the scope of protection of the utility model.
Claims (4)
1. a kind of big axis making-up air device of turbine-generator units, including the aeration valve at the top of generator（1）, its feature exists
In：In the aeration valve（1）Upper end is provided outside for containing from aeration valve（1）The catchment covers of the water of outflow（3）, it is described to catchment
Cover（3）With aeration valve（1）Upper end outside wall surface forms enclosure space, in catchment covers（3）Upper surface be provided with ball-cock assembly（4）.
2. the big axis making-up air device of turbine-generator units according to claim 1, it is characterised in that：The ball-cock assembly（4）For
Porous ball-cock assembly（4）.
3. the big axis making-up air device of turbine-generator units according to claim 2, it is characterised in that：The porous ball-cock assembly
（4）Catchment covers are evenly arranged in by circumferencial direction（3）On.
4. the big axis making-up air device of turbine-generator units according to claim 1, it is characterised in that：The catchment covers（3）It is logical
Cross and be bolted to flange（2）On.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721418090.1U CN207333088U (en) | 2017-10-30 | 2017-10-30 | A kind of big axis making-up air device of turbine-generator units |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721418090.1U CN207333088U (en) | 2017-10-30 | 2017-10-30 | A kind of big axis making-up air device of turbine-generator units |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207333088U true CN207333088U (en) | 2018-05-08 |
Family
ID=62364130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721418090.1U Active CN207333088U (en) | 2017-10-30 | 2017-10-30 | A kind of big axis making-up air device of turbine-generator units |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207333088U (en) |
Cited By (1)
| 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 |
-
2017
- 2017-10-30 CN CN201721418090.1U patent/CN207333088U/en active Active
Cited By (1)
| 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 |
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