CN107587969A - A kind of big axle making-up air device of turbine-generator units and method - Google Patents
A kind of big axle making-up air device of turbine-generator units and method Download PDFInfo
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- CN107587969A CN107587969A CN201711041256.7A CN201711041256A CN107587969A CN 107587969 A CN107587969 A CN 107587969A CN 201711041256 A CN201711041256 A CN 201711041256A CN 107587969 A CN107587969 A CN 107587969A
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- Prior art keywords
- aeration valve
- ball
- cock assembly
- valve
- turbine
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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)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
The invention discloses a kind of big axle making-up air device of turbine-generator units and method, including the aeration valve at the top of generator, the catchment covers for containing the water from aeration valve outflow are provided with outside the aeration valve upper end, the catchment covers form closing space with aeration valve upper end outside wall surface, and the upper surface of catchment covers is provided with ball-cock assembly；The present invention 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, the ball-cock assembly 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 a part of secondary seal, prevent because the leak of buffer-type aeration valve valve disc trigger accident.
Description
Technical field
The present invention relates to a kind of big axle making-up air device of turbine-generator units and method, 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 arranged at the top of generator, generated 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, because caused powerful centrifugal force can make butterfly valve gear outer worm screw operate machine
The phenomenon that the accessories such as structure are thrown out of.Constantly it is found in the inspection of unit rotating part and unit maintenance, although can enter in time to it
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, serious potential safety hazard be present, in some instances it may even be possible to send 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.
The content of the invention
The technical problem to be solved in the present invention is：A kind of big axle making-up air device of turbine-generator units and method are provided, with solution
Certainly when aeration valve breaks down or bonnet is by foreign matter jam, water enters tonifying Qi room and has little time water logging unit caused by discharging
Accident.
The technical scheme is that：A kind of big axle making-up air device of turbine-generator units, including at the top of generator
Aeration valve, be provided with outside the aeration valve upper end for contain from aeration valve outflow water catchment covers, the catchment covers
Closing space is formed with aeration valve upper end outside wall surface, 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 ball float of porous ball-cock assembly
Gross mass is small, and buoyancy and deadweight 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 circumferentially evenly arranged on catchment covers in direction
The catchment covers are bolted on flange.
Increase ball-cock assembly, the general principle of ball-cock assembly in tonifying Qi pipeline：When inflow sets up sealing more than water yield
Pressure, while when ball float rises to valve port position under buoyancy, the excessive effect of cut-off water is played, even if not setting up close
When seal pressure has a small amount of water excessive, generating set drainage pipeline can also discharge these excessive water.
The beneficial effects of the invention are as follows：The present invention installs one additional on the basis of current aeration valve is retained at the top of aeration valve
Individual porous ball-cock assembly.In normal operating conditions, the ball-cock assembly is in fully open position, is carried out by aeration valve under unit operation operating mode
Normal tonifying Qi；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
It is interior, play a part of secondary seal, prevent because the leak of buffer-type aeration valve valve disc triggers accident, the not shadow from the point of view of operational effect
Ring the normal work of former aeration valve.In addition, ball-cock assembly is placed on aeration valve upper end, it is not only convenient for overhauling porous float valve,
And when aeration valve breaks down and can not closed, acted on first on the bonnet of aeration valve after coming on water hammer, so to water hammer
Energy greatly weakened, avoid water hammer from acting directly on porous ball-cock assembly so that porous float valve extend use the longevity
Life.The present invention has simple in construction, easy for installation, practical, the features such as improvement expenses is low.
Brief description of the drawings
Fig. 1 is the big axle tonifying Qi valve arrangement of traditional turbine-generator units；
Fig. 2 is the structural representation of the present invention；
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
To make the object, technical solutions and advantages of the present invention clearer, the present invention is made into one below in conjunction with accompanying drawing
It is described in detail on step ground.
Referring to figs. 2 and 3 the big axle making-up air device of a kind of turbine-generator units of the embodiment of the present invention, in traditional structure（Fig. 1）
In transformed, including original aeration valve 1 and flange 2 at the top of the generator is provided with use outside the upper end of aeration valve 1
In 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 and aeration valve
1 upper end outside wall surface, flange 2 form closing 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, and circumferentially direction is evenly arranged in
On the upper surface of catchment covers 3.
Above content is to combine specific preferred embodiment further description made for the present invention, it is impossible to is assert
The specific implementation of the present invention is confined to these explanations.For general technical staff of the technical field of the invention,
On the premise of not departing from present inventive concept, some simple deduction or replace can also be made, should all be considered as belonging to the present invention's
Protection domain.
Claims (4)
1. a kind of big axle 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）It is provided with outside upper end 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 closing space, in catchment covers（3）Upper surface be provided with ball-cock assembly（4）.
2. the big axle 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 axle making-up air device of turbine-generator units according to claim 2, it is characterised in that：The porous ball-cock assembly
（4）Circumferentially direction is evenly arranged in catchment covers（3）On.
4. the big axle 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 |
|---|---|---|---|
| CN201711041256.7A CN107587969A (en) | 2017-10-30 | 2017-10-30 | A kind of big axle making-up air device of turbine-generator units and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711041256.7A CN107587969A (en) | 2017-10-30 | 2017-10-30 | A kind of big axle making-up air device of turbine-generator units and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107587969A true CN107587969A (en) | 2018-01-16 |
Family
ID=61043658
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711041256.7A Pending CN107587969A (en) | 2017-10-30 | 2017-10-30 | A kind of big axle making-up air device of turbine-generator units and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107587969A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112031981A (en) * | 2020-09-18 | 2020-12-04 | 张宏杰 | Generator main shaft air supplement pipe drainage system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0972270A (en) * | 1995-09-06 | 1997-03-18 | Mitsubishi Heavy Ind Ltd | Water turbine or reversible pump turbine |
| CN201078305Y (en) * | 2006-09-04 | 2008-06-25 | 韩宏波 | Air cushioning type vacuum gulp valve |
| CN204345017U (en) * | 2014-12-26 | 2015-05-20 | 华能澜沧江水电股份有限公司小湾水电厂 | The anti-aeration valve water leakage device of a kind of generator's motor shaft |
| CN204419436U (en) * | 2015-02-02 | 2015-06-24 | 中国长江电力股份有限公司 | The tail water that prevents for Francis turbine alignment of shafts air compensating system is turned one's coat device |
| CN205026191U (en) * | 2015-10-10 | 2016-02-10 | 杭州福朗机电科技有限公司 | Normal close formula ball -cock assembly |
| CN205858555U (en) * | 2016-08-08 | 2017-01-04 | 中国长江电力股份有限公司 | A kind of alignment of shafts aeration valve without pin location |
| CN207333088U (en) * | 2017-10-30 | 2018-05-08 | 贵州乌江水电开发有限责任公司构皮滩发电厂 | A kind of big axis making-up air device of turbine-generator units |
-
2017
- 2017-10-30 CN CN201711041256.7A patent/CN107587969A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0972270A (en) * | 1995-09-06 | 1997-03-18 | Mitsubishi Heavy Ind Ltd | Water turbine or reversible pump turbine |
| CN201078305Y (en) * | 2006-09-04 | 2008-06-25 | 韩宏波 | Air cushioning type vacuum gulp valve |
| CN204345017U (en) * | 2014-12-26 | 2015-05-20 | 华能澜沧江水电股份有限公司小湾水电厂 | The anti-aeration valve water leakage device of a kind of generator's motor shaft |
| CN204419436U (en) * | 2015-02-02 | 2015-06-24 | 中国长江电力股份有限公司 | The tail water that prevents for Francis turbine alignment of shafts air compensating system is turned one's coat device |
| CN205026191U (en) * | 2015-10-10 | 2016-02-10 | 杭州福朗机电科技有限公司 | Normal close formula ball -cock assembly |
| CN205858555U (en) * | 2016-08-08 | 2017-01-04 | 中国长江电力股份有限公司 | A kind of alignment of shafts aeration valve without pin location |
| CN207333088U (en) * | 2017-10-30 | 2018-05-08 | 贵州乌江水电开发有限责任公司构皮滩发电厂 | A kind of big axis making-up air device of turbine-generator units |
Non-Patent Citations (1)
| Title |
|---|
| 尹宁: "国产600MW 大型水轮发电机组组合式补气阀探索与应用", 《高新技术》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112031981A (en) * | 2020-09-18 | 2020-12-04 | 张宏杰 | Generator main shaft air supplement pipe drainage system |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180116 |
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| RJ01 | Rejection of invention patent application after publication |