CN201078305Y - Air cushioning type vacuum gulp valve - Google Patents
Air cushioning type vacuum gulp valve Download PDFInfo
- Publication number
- CN201078305Y CN201078305Y CNU2006200215945U CN200620021594U CN201078305Y CN 201078305 Y CN201078305 Y CN 201078305Y CN U2006200215945 U CNU2006200215945 U CN U2006200215945U CN 200620021594 U CN200620021594 U CN 200620021594U CN 201078305 Y CN201078305 Y CN 201078305Y
- Authority
- CN
- China
- Prior art keywords
- valve
- air
- valve rod
- air cushioning
- utility
- 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 - Lifetime
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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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- Check Valves (AREA)
Abstract
An air cushion vacuum aeration valve of the utility model is an aeration device with an air damping device, by which a vacuum degree of a hydraulic turbine can be eliminated or reduced when in operation or stoppage. The utility model is characterized in that: the air damping device is arranged on the valve body; the device is connected with a valve rod by a movable linkage section; 2 to 4 back stop guide caps with an air vent are positioned on a dashpot plunger. The utility model is composed of a compressed spring, a conical valve cap, a valve seat, a shaft sealing and a ball sealer.
Description
Technical field:
The utility model relates to a kind of making-up air device that reduces or eliminate the vacuum that produces when hydraulic turbine operation or shutdown.
Background technique:
Water turbine all can produce huge degree of vacuum when breaking away from nominal operating conditions or shutting down, this degree of vacuum has not only been aggravated the water turbine cavitation erosion, and can cause unit vibration or lift machine, brings very big damage to unit.So on the unit top cover or on the main shaft vacuum gas supplementary valve is being housed all, is reducing or eliminate the damage of degree of vacuum to unit.
Current, some vacuum gas supplementary valve does not have the resilience damping device at all, often causes valve stem crack or causes the damage of sealing rubber ring.Though also some product has damping device, this device has just been opened several holes as the hole of damming on damper piston.When adopting oil to cushion, all be in the buffer status that dams when aeration valve opens or closes, be i.e. during this tonifying Qi, can not open rapidly and cover air and eliminate vacuum at once; When this is closed, can not close immediately, cause and waterbornely come, and the oil that is used for buffer medium also often leaks, cause cushioning effect to reduce or disappear.
The model utility content:
The utility model at the speed of water turbine vacuum gas supplementary open, speed returns, puts in place slow technical requirements of closing and design, broken through because air compression is big, can not be used to do the thinking of buffer medium, changed cushion dashpot and buffering piston structure when adopting air cushioning dexterously, made the utility model patent realize that really vacuum gas supplementary valve speed is opened, speed is returned, slow service condition of closing puts in place.
The utility model mainly is made up of tapered valve cover and valve seat, valve rod, pressure spring, secondary spherical sealing and damping device.Connect the device that air cushioning is housed in the valve rod upper end with flexibly connecting joint, this device is that damper piston is fixed on the buffer bar, 2～4 holes are arranged on damper piston, its diameter is Φ 20～30mm, have the emptying gas port above in each hole, being equipped with, the check that has position-limited lever is below led lid, and buffer bar links to each other with flexibly connecting joint with valve rod; Cushion dashpot is fixed on the spring casing, in the middle of the valve rod stage clip is housed, and lower end and tapered valve cover are fixed together, and puts the sealing drum that has ball sealer and advance air scoop O type rubber ring in the valve body outside.Damping device be with air as buffer medium, 2～4 checks are housed on damper piston lead lid.When water turbine formed vacuum, valve gap moved down rapidly, and air enters the region of no pressure between valve gap and valve seat.When valve gap moves down rapidly, check on the damper piston is led lid and is opened, following air enters into buffer cavity from the hole on the piston, when vacuum reduces or disappear, valve gap is under spring action rapidly during resilience, check is led lid the hole on the piston is blocked up, and the air that enters buffer cavity promptly plays buffer function after Piston Compression.After buffer function reached, air was led the emptying pore that covers along check again and is ejected, had just reached the sealing that puts in place of valve gap and valve seat, had realized that again buffering closes.
The novel uniqueness of the utility model, rational in infrastructure, having solved its like product does not have buffering or has the buffering leakage of oil to cause losing the problem of buffering, the technique effect of having realized really that hydraulic turbine generator leaves in the operation speed per hour, speed is returned, having closed to bit buffering, the utility model also can be realized long-term non-maintaining technical requirements, easy for installation, be widely used in the hydroelectric power field.
Description of drawings:
Fig. 1. air cushioning formula vacuum gas supplementary valve plan view
Fig. 2. air cushioning formula vacuum gas supplementary valve A-A view
Fig. 3. air cushioning formula vacuum gas supplementary valve B-B view
Fig. 4. lead to gas buffering type vacuum gas supplementary valve check and to cover three-view diagram
Wherein:
1, valve rod 2, tapered valve cover 3, top cover (water turbine)
4, valve seat 5, sealing drum are closing screw rod 6, sealing drum
7, bearing support 8, spring casing 9, stage clip
10, stage clip lid 11, stage clip are adjusted nut 12, ball sealer frame
13, ball sealer 14, advance air scoop O type rubber ring 15, emptying gas port
16, piston nut 17, buffer bar 18, check are led lid
19, damper piston 20, position-limited lever 21, flexible connection joint
22, cushion dashpot 23, closing screw rod 24, valve rod limiting block
25, compound guide bushing 26, valve gap nut
Embodiment:
Describe below in conjunction with the structure of accompanying drawing air cushioning formula vacuum gas supplementary valve provided by the utility model:
At first, with welding manner spring casing (8) is fixed on the valve seat (4) by bearing support (7), with valve gap nut (26) tapered valve cover (2) is fixed on the valve rod (1), compound guide bushing (25) is passed in valve rod (1) upper end to be entered in the spring casing (8), stage clip (9) is enclosed within on the valve rod (1), put stage clip lid (10) stage clip of screwing on again and adjust nut (11), valve rod (1) and buffer bar (17) are connected together with flexibly connecting joint (21).Damper piston (19) is fixed on the buffer bar (17) with piston nut (16), the more top check that has emptying gas port (15) is led lid (18) and put into hole on the damper piston (19), use position-limited lever (20) to be fixed on check again and lead lid (18) lower end.Put cushion dashpot (22) with being affixed on the spring casing (8) in damper piston (19) outside closing screw rod (23).Ball sealer (13) is installed in the ball sealer frame (12) of sealing drum (6), on sealing drum (6), enter the air scoop place and load onto into air scoop O type rubber ring (14), then sealing drum (6) is fixed on the valve seat (4) closing screw rod (5) with sealing drum, implements to finish.
Claims (1)
1. air cushioning formula vacuum gas supplementary valve, it is the device that reduces or eliminate the water turbine vacuum, it is characterized in that:
Connect the device that air cushioning is housed in valve rod (1) upper end with flexibly connecting joint (21), this device is that damper piston (19) is fixed on the buffer bar (17), 2～4 holes are arranged on damper piston (19), its diameter is Φ 20～30mm, have emptying gas port (15) above in each hole, being equipped with, the check that has position-limited lever (20) is below led lid, and buffer bar (17) links to each other with flexibly connecting joint (21) with valve rod (1); Cushion dashpot (22) is fixed on the spring casing (8), in the middle of the valve rod (1) stage clip (9) is housed, and lower end and tapered valve cover (2) are fixed together, and puts the sealing drum (6) that has ball sealer (13) and advance air scoop O type rubber ring in the valve body outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200215945U CN201078305Y (en) | 2006-09-04 | 2006-09-04 | Air cushioning type vacuum gulp valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200215945U CN201078305Y (en) | 2006-09-04 | 2006-09-04 | Air cushioning type vacuum gulp valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201078305Y true CN201078305Y (en) | 2008-06-25 |
Family
ID=39570366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006200215945U Expired - Lifetime CN201078305Y (en) | 2006-09-04 | 2006-09-04 | Air cushioning type vacuum gulp valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201078305Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102678426A (en) * | 2011-03-12 | 2012-09-19 | 哈尔滨迅普科技发展有限公司 | Air compression buffering device |
| CN103850854A (en) * | 2012-12-04 | 2014-06-11 | 哈尔滨盛迪电力设备有限公司 | Built-in air buffering air supplement device |
| CN104005900A (en) * | 2013-02-22 | 2014-08-27 | 哈尔滨盛迪电力设备有限公司 | Combined air cushioning air supplement device |
| CN104234911A (en) * | 2013-06-08 | 2014-12-24 | 哈尔滨盛迪电力设备有限公司 | Self-aligning type air buffering device |
| 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 |
-
2006
- 2006-09-04 CN CNU2006200215945U patent/CN201078305Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102678426A (en) * | 2011-03-12 | 2012-09-19 | 哈尔滨迅普科技发展有限公司 | Air compression buffering device |
| CN102678426B (en) * | 2011-03-12 | 2014-09-03 | 哈尔滨迅普科技发展有限公司 | Air compression buffering device |
| CN103850854A (en) * | 2012-12-04 | 2014-06-11 | 哈尔滨盛迪电力设备有限公司 | Built-in air buffering air supplement device |
| CN103850854B (en) * | 2012-12-04 | 2016-12-21 | 哈尔滨盛迪电力设备有限公司 | Built-in air buffering making-up air device |
| CN104005900A (en) * | 2013-02-22 | 2014-08-27 | 哈尔滨盛迪电力设备有限公司 | Combined air cushioning air supplement device |
| CN104005900B (en) * | 2013-02-22 | 2016-12-28 | 哈尔滨盛迪电力设备有限公司 | Combined air buffering making-up air device |
| CN104234911A (en) * | 2013-06-08 | 2014-12-24 | 哈尔滨盛迪电力设备有限公司 | Self-aligning type air buffering device |
| CN104234911B (en) * | 2013-06-08 | 2016-12-28 | 哈尔滨盛迪电力设备有限公司 | Self-centering type air buffer |
| 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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080625 |
|
| EXPY | Termination of patent right or utility model |