CN102678426A - Air compression buffering device - Google Patents
Air compression buffering device Download PDFInfo
- Publication number
- CN102678426A CN102678426A CN2011100637618A CN201110063761A CN102678426A CN 102678426 A CN102678426 A CN 102678426A CN 2011100637618 A CN2011100637618 A CN 2011100637618A CN 201110063761 A CN201110063761 A CN 201110063761A CN 102678426 A CN102678426 A CN 102678426A
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- China
- Prior art keywords
- valve
- buffering
- hollow core
- fixing head
- baffle ring
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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 invention discloses an air compression buffering device. The key technical scheme of the invention is as follows: a reverse cut-off hollow core valve with 2-4 upper air inlets and an air intake pipe is arranged inside a central guide hole of a buffering piston; and a stop valve spring, a baffle ring and a baffle ring stop pin are arranged at the lower end of the reverse cut-off hollow core valve. The lateral side of a hole-type fixing head is provided with 2-4 lateral air inlets; and the hole-type fixing head is fixed together with the buffering piston and the hole-type fixing head is connected together with a valve shaft through a cross connector. An annular empty groove and 2-4 axial exhaust grooves are machined on the internal surface of the bottom surface of a buffering cylinder, and after sleeved on the buffering piston, the buffering cylinder is fixed on a main spring protecting tube through a mesoposition hexagon socket bolt. The air compression buffering device can be extensively applied to rotation gulp valves and static gulp valves.
Description
Technical field:
The present invention is a kind of air compression damping device that is used to move on the aeration valve.
Background technique:
When the hydraulic generator unit breaks away from the declared working condition operation, can below water turbine, produce the moment vacuum, the vacuum that is produced can cause water turbine when operation, to produce vibration and lift machine, causes the damage of unit, simultaneously also can exacerbate water turbine cavitation erosion degree.For this reason, the operation aeration valve is housed all in hydraulic turbine main shaft upper end, the instantaneous degree of vacuum that produces when water turbine is during greater than the limit value of regulation; The operation aeration valve just overcomes the elastic force of main spring, opens valve gap, mends into air to the water turbine region of no pressure; Eliminate unit vibration, avoid lifting machine, reduce the cavitation erosion degree.After air was mended, vacuum disappeared immediately, and valve gap returns rapidly and closes under the effect of main spring, and in closing closed procedure, the valve gap and the contact surface of valve seat produce huge bump, and not only operating noise is big, and the disconnected valve shaft that often shakes, and causes the accident of water logging unit.For this reason, on aeration valve, increase damping device, such as; Oil buffering, air damping buffering, piston circumference have a plurality of stop valve air compression damping devices; All there is certain defective in these damping devices in the aeration valve actual motion, be bidirectional damper buffering like oily damping device, not only can not make aeration valve reach that speed is opened, speed is returned, slow technical requirements of closing puts in place; And buffer medium oil causes the problem of buffer invalidation and oil pollution through the leakage under the damping pressure effect of being everlasting; Adopt regulating the buffering bolt regulates into the air damping damping device of emptying gas and can't solve water turbine or miscellaneous equipment at all and produce air compensation that degree of vacuum requires and tonifying Qi valve gap switching time at random; Each degree of vacuum that forms is at random, so require the damping device performance must satisfy its randomness; The damping device that also has is equipped with 2～4 stop valves at damper piston; Because these 2～4 stop valves are to be contained on the damper piston circumference, aeration valve is along with the turbine shaft high speed rotating, and stop valve is stuck on the piston in the movement process of being everlasting on the damper piston so be contained in; Cause valve gap not close; The serious accident that causes the valve port water inlet, the hydraulic turbine generator urgent need is a kind of to overcome above-mentioned damping device defective, the safe and reliable new buffer device that satisfies the aeration valve operating conditions.
Summary of the invention:
The object of the invention just provides a kind of technological scheme of air compression damping device; The present technique scheme has overcome the defective of above-mentioned other form damping device, it is characterized in that, is having the reverse after stop valve O type circle is loaded onto in the hollow core valve upper end of inlet hole on 2～4; Damper piston centre pilot hole is put in slip; Put the stop valve spring reverse by the hollow core valve lower end, refill upper baffle ring, reverse the ending on the hollow core valve below baffle ring fixes the baffle ring backing pin; Be fixed on the cellular type fixing head that has 2～4 side inlet holes below the damper piston through adpting flange with the piston fixing bolt; Connect orifice plate to fixing head with the fixing head connecting pin and be connected cross connecting head upper end, with the valve shaft connecting pin valve shaft is connected orifice plate and link to each other with cross connecting head lower end is rotatable, valve shaft connects orifice plate and valve shaft is an one; To have the cushion dashpot of ring-like dead slot, 2～4 air vents again, be fixed on the main spring casing through the meta hexagon socket head cap screw.
The technique effect that technological scheme provided by the present invention realized is such: when the hydraulic generator unit breaks away from the declared working condition operation; Can below water turbine, produce the moment vacuum; Under vacuum action, valve gap is opened rapidly, mends a large amount of air; Simultaneously, valve gap drive valve shaft, cellular type fixing head and damper piston also move down rapidly together.In folding process, also produce vacuum between damper piston upper end and the cushion dashpot, under this vacuum action; The reverse hollow core valve that ends in the damper piston centre pilot hole is mentioned; Expose 2～4 last inlet holes, following air just gets into this region of no pressure from 2～4 side inlet holes rapidly through suction tude and 2～4 last inlet holes, and valve gap is opened rapidly; Realize that operation aeration valve vacuum forms the technical requirements that speed per hour is opened; When carrying on the hollow core valve, below it, increased stop valve spring reverse, prevented to be used for oppositely encircling by the baffle ring damage of hollow core valve upper limit with pooling feature; When the operation aeration valve has been mended the rapid rising of air when closing to the region of no pressure; Under the effect of main spring; Valve gap, valve shaft and damper piston move on together; Close inlet hole on 2～4 last reverse the moving down by hollow core valve that moves past in the journey in the damper piston centre pilot hole, the air between damper piston and ring-like dead slot all 2～4 air vents of favorable balance gets in the main spring casing, and damper piston moves on the ring-like dead slot on can be rapidly; After damper piston is crossed ring-like dead slot; Just the air above the ring-like dead slot is compressed the realization buffering, accomplish the air of buffering the appropriate design gap of favorable balance between damper piston of reserving and cushion dashpot got back in the main spring casing, realize moving aeration valve speed and get back to the slow technical requirements of closing in position.
Because the reverse centre pilot hole that places damper piston by hollow core valve; There is not the influence of centrifugal force to it; Do not have the generation of jam phenomenon, be provided with lubricating grease, oil storage annular groove, reduced the friction factor that moves up and down greatly at the damper piston outer surface.Owing in the present technique scheme, adopted the cross connecting head, the axle cording of operation aeration valve and air compression damping device has the function at automatic adjustment center.
Technological scheme structure involved in the present invention is terse, ingenious, and the safe and reliable life-span is long, produces easy for installationly, has novelty, creativeness and practicability, be bound to be widely used in to rotate and static equipment on aeration valve on.
Description of drawings:
Fig. 1. air compression damping device plan view
Fig. 2. air compression damping device A-A view
Fig. 3. air compression damping device B-B view
Wherein:
Embodiment:
Stop valve O type circle (3) is enclosed within has 2～4 and go up inlet hole (4) and the reverse behind hollow core valve (2) upper end of suction tude (6) arranged, will oppositely end again in the centre pilot hole (7) of hollow core valve (2) insertion damper piston (5), and can freely slide up and down.Be enclosed within stop valve spring (8) and reverse behind hollow core valve (2) lower end, load onto baffle ring (12) in stop valve spring (8) lower end again, reverse by the last fixing upper baffle ring backing pin (13) of hollow core valve (2) baffle ring (12) below.Have 2～4 side inlet holes (38) at cellular type fixing head (15) outer surface; Below cellular type fixing head (15), there is fixing head to connect orifice plate (37); Be fixed on damper piston (5) lower end to cellular type fixing head (15) with piston fixing bolt (10) through adpting flange (39), have two oil storage annular grooves (9) at damper piston (5) outer surface.Connecting orifice plate (37) to fixing head through fixing head connecting pin (36) is connected above the cross connecting head (35); Fixing valve gap (30) with valve shaft nut (31); Main spring (20) be inserted in valve shaft (21) and the main spring casing (17) of packing in; Screw on behind the main spring nut (18), with valve shaft connecting pin (34) valve shaft is connected orifice plate (33) and be connected with cross connecting head (35) lower end, it is one with valve shaft (21) that valve shaft connects orifice plate (33).Behind a processing ring-like dead slot (11) and 2～4 axial air vents (14) on the non-need of cushion dashpot (1) the internal surface buffer position, be enclosed within damper piston (5) outside, use meta hexagon socket head cap screw (16) to be fixed on cushion dashpot (1) on the main spring casing (17) again.Enforcement finishes.
Claims (1)
1. an air compression damping device is characterized in that, is having the reverse after stop valve O type circle is loaded onto in the hollow core valve upper end of inlet hole on 2～4; Damper piston centre pilot hole is put in slip; Put the stop valve spring reverse by the hollow core valve lower end, refill upper baffle ring, reverse the ending on the hollow core valve below baffle ring fixes the baffle ring backing pin; Be fixed on the cellular type fixing head that has 2～4 side inlet holes below the damper piston through adpting flange with the piston fixing bolt; Connect orifice plate to fixing head with the fixing head connecting pin and be connected cross connecting head upper end, with the valve shaft connecting pin valve shaft is connected orifice plate and link to each other with cross connecting head lower end is rotatable, valve shaft connects orifice plate and valve shaft is an one; To have the cushion dashpot of ring-like dead slot, 2～4 air vents again, be fixed on the main spring casing through the meta hexagon socket head cap screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110063761.8A CN102678426B (en) | 2011-03-12 | 2011-03-12 | Air compression buffering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110063761.8A CN102678426B (en) | 2011-03-12 | 2011-03-12 | Air compression buffering device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102678426A true CN102678426A (en) | 2012-09-19 |
| CN102678426B CN102678426B (en) | 2014-09-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110063761.8A Active CN102678426B (en) | 2011-03-12 | 2011-03-12 | Air compression buffering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102678426B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB770886A (en) * | 1954-07-22 | 1957-03-27 | Karlstad Mekaniska Ab | Improvements in air admission valves in francis turbines |
| US3770008A (en) * | 1972-12-11 | 1973-11-06 | Victor Equipment Co | Relief valve that seals against vacuum |
| CN2462103Y (en) * | 2000-12-19 | 2001-11-28 | 谢晓林 | Air make-up device of water turbine |
| CN2706646Y (en) * | 2004-04-30 | 2005-06-29 | 韩宏波 | Buffering type double seal vacuum gas supplying valve |
| KR100795897B1 (en) * | 2006-09-04 | 2008-01-21 | 권오경 | Vacuum breaker system of water turbine for water-power generation |
| CN201078305Y (en) * | 2006-09-04 | 2008-06-25 | 韩宏波 | Air cushioning type vacuum gulp valve |
| CN101392849A (en) * | 2008-11-06 | 2009-03-25 | 福建万新发电设备有限公司 | Amortization type vacuum damage valve |
| CN201991676U (en) * | 2011-03-12 | 2011-09-28 | 哈尔滨迅普科技发展有限公司 | Air compression cushioning device |
-
2011
- 2011-03-12 CN CN201110063761.8A patent/CN102678426B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB770886A (en) * | 1954-07-22 | 1957-03-27 | Karlstad Mekaniska Ab | Improvements in air admission valves in francis turbines |
| US3770008A (en) * | 1972-12-11 | 1973-11-06 | Victor Equipment Co | Relief valve that seals against vacuum |
| CN2462103Y (en) * | 2000-12-19 | 2001-11-28 | 谢晓林 | Air make-up device of water turbine |
| CN2706646Y (en) * | 2004-04-30 | 2005-06-29 | 韩宏波 | Buffering type double seal vacuum gas supplying valve |
| KR100795897B1 (en) * | 2006-09-04 | 2008-01-21 | 권오경 | Vacuum breaker system of water turbine for water-power generation |
| CN201078305Y (en) * | 2006-09-04 | 2008-06-25 | 韩宏波 | Air cushioning type vacuum gulp valve |
| CN101392849A (en) * | 2008-11-06 | 2009-03-25 | 福建万新发电设备有限公司 | Amortization type vacuum damage valve |
| CN201991676U (en) * | 2011-03-12 | 2011-09-28 | 哈尔滨迅普科技发展有限公司 | Air compression cushioning device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
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| Publication number | Publication date |
|---|---|
| CN102678426B (en) | 2014-09-03 |
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