CN203684195U - Lip air entrainment system for water delivery valve of high-lift ship lock - Google Patents
Lip air entrainment system for water delivery valve of high-lift ship lock Download PDFInfo
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- CN203684195U CN203684195U CN201420061354.2U CN201420061354U CN203684195U CN 203684195 U CN203684195 U CN 203684195U CN 201420061354 U CN201420061354 U CN 201420061354U CN 203684195 U CN203684195 U CN 203684195U
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/30—Flood prevention; Flood or storm water management, e.g. using flood barriers
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Abstract
The utility model provides a lip air entrainment system for a water delivery valve of a high-lift ship lock. The lip air entrainment system comprises the water delivery valve, a water delivery gallery, a first vent pipe, a rotary joint and a second vent pipe; the water delivery valve adopts a reversed radial gate without a gate slot and comprises a valve trunnion, a valve faceplate and a valve supporting arm connecting the valve trunnion and the valve faceplate; the first vent pipe is embedded into concrete during pouring of a valve well, and the inlet end of the first vent pipe is positioned on the top of the valve well and connected with the atmosphere; the second vent pipe communicated with the outside is led out from the lip of the water delivery valve, the second vent pipe enters the valve trunnion along the valve supporting arm, and the valve trunnion is provided with the rotary joint connecting the first vent pipe and the second vent pipe. The lip air entrainment system can improve the problem of water flow cavitation of the ship lock valve, avoids cavitation erosion, not only can improve the operation safety of the ship lock, but also reduces the buried depth of the valve, and simplifies the gallery shape, so that the forming of a new cavitation source caused by the complicated valve shape is avoided, and simultaneously the construction difficulty is lowered and theengineering cost of the valve gallery is lowered.
Description
Technical field
The utility model relates to the high-lift lock valve section corrosion inhibitor technical field in hydraulic engineering, specifically a kind of high-lift lock water-delivery valve root edge aeration system.
Background technology
Ship lock is arranged on navigable river and helps ship to overcome the navigation structure of the water-head causing because building a dam.Along with the development of maritime engineering, the scale of ship lock constantly increases, and the size of valve and head also increase and improve corresponding.The high-lift lock that built and head that plan to build exceedes 20m in the world has tens, mainly concentrate on the countries such as the former Soviet Union, the U.S., Brazil, Portugal and China, particularly China is in the western hydraulic development of carrying out in recent years, build, building and planning to build the large storehouse of multiple high dams, therefore supportingly also need to build multiple high-lift locks.
The operation of ship lock is to rely on the water-carriage system that is embedded in both sides or bottom to complete the sluicing of filling of lock chamber, and water-delivery valve is the throat equipment of water-carriage system, whether it normally moves the safety that has directly determined ship lock, high-lift lock valve working is in non-constant high-velocity flow environment, relating to the high-velocity flow problem of the series of complex such as flow cavitation, pulsation, is the most thorny issue in hydraulics of shiplock research.
When high-lift lock water-delivery valve opens and closes, the lower main flow flow velocity of door is high, pressure is low, when the pressure of current is during lower than vapor pressure, just produce hole current, form gasification bubble, gasification bubble constantly generates, mobile breaking, enormous impact power when current border is subject to gasifying follicular rupture causes denudation, and building wall is produced to great destructive power.As U.S. Litt goose, Lower ship lock (head is 30.8m), Johm Day ship lock (head 34.8m), Muscovite water gold power station ship lock (working head 23.0m), with China's Gezhouba Shiplock (head 27.0m), Design of Wanan Ship Lock (head 32.4m) etc., huge explosion sound all once occurred in running, after valve panel and water-delivery valve there is cavitation erosion phenomenon in gallery wall.
The adverse consequences producing for fear of cavitation and cavitation erosion, Chinese scholars has been carried out a large amount of research work.Within 1934, the U.S. has adopted first without the anti-arc door of gate slot, has evaded gate slot Cavitation Problems under high-velocity flow condition, is widely applied afterwards without the good vibrationproof of the anti-arc Men Yiqi of gate slot and anti-cavitation performance on high-lift lock.And a large amount of practices shows, along with the raising of lock lift, anti-arc door is in opening process, and valve lintel gap, root edge and behind the door shear band easily form cavitation current, when particularly valve moves in aperture 0.3～0.6 scope, valve root edge and shear band Cavitation Problems is more outstanding behind the door.The U.S. has proposed the measure of gallery top natural ventilation after valve the earliest with deduction and exemption cavitation, but China's river level luffing is larger, and after valve, the method for gallery top natural ventilation is inapplicable under a lot of conditions.The former Soviet Union has proposed gallery limit wall sudden expansion behind the door, valve root edge current are separated and behind the door the cavitation current of formation of shear bands away from gallery limit wall to alleviate cavitation erosion.The scholars of China have carried out a large amount of research work, have proposed to arrange at sealing lintel place, anti-arc door top the measure of air vent, have substantially eliminated lintel top seam cavitation, also make valve root edge cavitation obtain certain alleviation.
After eighties of last century a series of exploration amendments taking model testing as master of the seventies to the beginning of this century, China's high-lift lock valve section corrosion inhibitor adopts the method for " other ancillary method such as anti-arc door+sudden expansion chamber+lintel aeration+increase valve section buried depth " substantially, this combination measure has obtained generally approval in the industry, in recent years the research in this field is not had to new breakthrough substantially.A large amount of Prototype Observation are mainly carried out, observation is found after the operation of a period of time, the method of lintel ventilation is remarkable to eliminating top seam cavitation effect, but limited because arriving the tolerance of valve root edge, to deduction and exemption valve root edge and shear band cavitation DeGrain behind the door; Adopt the method for sudden expansion to make culvert shape complexity behind the door, some new cavitation sources have been produced simultaneously, particularly comparatively outstanding in the cavitation that rises Kan Chu, (certain high-lift lock rises Kan Chu and has monitored obvious cavitation existence at present, rises the existing cavitation corrosion phenomenon of Kan Chu and occur after long-term operation).
As mentioned above, for common valve section build, after high-lift lock water-delivery valve, topmost cavitation source has 3, is respectively valve root edge and shear band and valve lintel gap place behind the door.Solve the at present existing more ripe measure of lintel gap cavitation, therefore how can avoid valve root edge and behind the door shear band current generation cavitation, avoid adopting complicated valve section build to occur new cavitation source again, to increasing ship lock security of operation, the design head that reduces construction costs and improve ship lock is a project that has scientific research meaning and economic worth.
Utility model content
The utility model is the deficiency existing for overcoming prior art, effectively solves navigation lock valve section cavitation erosion problem, and proposes a kind of high-lift lock water-delivery valve root edge aeration system.
A kind of high-lift lock water-delivery valve root edge aeration system, comprise water-delivery valve, water delivery gallery, the first ventilating pipe, swivel coupling, the second ventilating pipe, described water-delivery valve adopts without the anti-arc door of gate slot, comprise that valve props up hinge, valve panel and connect valve the valve support arm that props up hinge and valve panel, described the first ventilating pipe is imbedded in concrete in the time that valve well is built, the entrance point of the first ventilating pipe is positioned at valve well top, joins with atmosphere; The root edge of water-delivery valve is drawn the second ventilating pipe communicating with the external world, and described the second ventilating pipe enters valve along valve support arm and props up hinge, and described valve props up hinge place the swivel coupling that connects the first ventilating pipe and the second ventilating pipe is set.
High-lift lock water-delivery valve root edge aeration system as above, the root edge of water-delivery valve is provided with a step-like bank that falls as aerator, the ladder of described aerator is provided with multiple root edge air vents, described multiple root edge air vent is communicated with ventilation transverse tube, and ventilation transverse tube is communicated with described the second ventilating pipe.
High-lift lock water-delivery valve root edge aeration system as above, the pipeline of the first ventilating pipe is divided into two, and one joins with atmosphere, and import department arranges unidirectional air door; Another connects air collector and air compressor successively.
The utility model is by being arranged in air entraining facilities on the valve of rotation, in the border constantly changing in locus and with flow direction angle, can obtain stable ventilatory effect, can improve ship lock valve section flow cavitation problem by simple measures like this, avoid occurring cavitation erosion, not only can improve the safety of ship lock operation, also can reduce valve section buried depth, simplify valve section culvert shape, avoid because of the too complicated new cavitation source that forms of valve section build, also can reduce valve section gallery difficulty of construction and construction costs simultaneously, reduce aeration equipment, thereby reduce ship lock operational and administrative expenses.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model high-lift lock water-delivery valve root edge aeration system;
Fig. 2 is the enlarged diagram of II part in Fig. 1;
Fig. 3 is the upstream elevation of the utility model water-delivery valve.
In figure: 1-water-delivery valve, 2-water delivery gallery, 3-valve well, 4-valve props up hinge, 5-valve support arm, 6-swivel coupling, the 7-the first ventilating pipe, 8-unidirectional air door, 9-air collector, 10-air compressor, the 11-the second ventilating pipe, 12-root edge air vent, 13-ventilation transverse tube, 14-aerator.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the utility model, the technical scheme in the utility model is clearly and completely described.
Figure 1 shows that the structural representation of the utility model high-lift lock water-delivery valve root edge aeration system, described aeration system comprises water-delivery valve 1, water delivery gallery 2, the first ventilating pipe 7, swivel coupling 6, the second ventilating pipe 11.Described water-delivery valve 1 adopts without the anti-arc door of gate slot, comprises that valve props up hinge 4, valve panel and connect valve the valve support arm 5 that props up hinge 4 and valve panel.
Described the first ventilating pipe 7 is imbedded in concrete in the time that valve well 3 is built, and the entrance point of the first ventilating pipe 7 is positioned at valve well 3 tops, joins with atmosphere.The port of export of the first ventilating pipe 7 connects into the valve of water-delivery valve 1 and props up hinge 4 places.The root edge of water-delivery valve 1 is drawn the second ventilating pipe 11 communicating with the external world, described the second ventilating pipe 11 is one-sided or bilateral along valve support arm 5() enter valve and prop up hinge 4, described valve props up hinge 4 places the swivel coupling 6 that connects the first ventilating pipe 7 and the second ventilating pipe 11 is set.Described swivel coupling 6 can ensure that the first ventilating pipe 7 and the second ventilating pipe 11 are opened with water-delivery valve 1 and still keeps unimpeded while rotating.
Please further refer to Fig. 2 and Fig. 3, be provided with a step-like bank that falls as aerator 14 at the root edge of water-delivery valve 1, the ladder of described aerator 14 is provided with multiple root edge air vents 12, and multiple root edge air vents 12 are communicated with ventilation transverse tube 13, and ventilation transverse tube 13 is communicated with described the second ventilating pipe 11.
Corrosion inhibitor mechanism of the present utility model is in the time that water-delivery valve 1 moves, air enters from the root edge of the water-delivery valve 1 that occurs negative pressure by the first ventilating pipe 7, swivel coupling 6, the second ventilating pipe 11, ventilation transverse tube 13, root edge air vent 12, gas enters water body after valve by the root edge current surface of shear of water-delivery valve 1, the positice ground effect of aerated flow and mix air and the blending of the cavitation bubble impact of cavity while crumbling and fall that be used for decaying.
The engineering special to utilization condition, as excessive in downstream water level amplitude, cause the pipeline of the first ventilating pipe 7 to be divided into two in the time that some operating mode nature tonifying Qi is not enough, as shown in Figure 1, one joins with atmosphere, and import department arranges unidirectional air door 8; Another connects air collector 9 and air compressor 10 successively.
For more particularly bright innovative point of the present utility model, the evolution process of anti-high-lift lock valve section cavitation measure is made to a basic explanation: 1. changed into without the anti-arc door of gate slot by plain batton door---evade gate slot Cavitation Problems under high-velocity flow; 2. gallery top ventilation behind the door---solve valve root edge current and separate and shear behind the door the Cavitation Problems that current produce, but natural ventilation is weak effect in the time that ship lock level of tail water luffing is large, artificial aeration has increased equipment, and the place not reaching at top aerated flow still there will be Cavitation Problems; 3. lintel ventilation---solve lintel water outlet flow cavitation; 4. gallery adopts sudden expansion pattern behind the door---valve root edge current are separated and behind the door the cavitation current of formation of shear bands away from gallery limit wall to alleviate cavitation erosion, but because of gallery limit wall change excessive again easily falling bank, Sheng Kan position forms new cavitation source, difficulty of construction is high, maintenance difficulty; 5. gallery adopts sudden expansion pattern behind the door, simultaneously falling bank, Sheng Kan position adds ladder bank and artificial aeration equipment, corrosion inhibitor system build is still complicated, equipment is numerous and diverse, Practical Condition and effect wait Practical Project inspection.
3. above-mentioned be the lintel gap Cavitation Problems in 3 main cavitation sources after solution valve, 2. be 5. 4. solve after valve 3 main cavitation source medium root edge cavitations and shear behind the door flow cavitation problem, if 5. 4. employing the utility model, 2. all no longer need, anti-cavitation corrosion measure is greatly simplified.
Novelty of the present utility model shows: all air entraining facilitieses are arranged on not mobile building limit wall both at home and abroad, and the space coordinates at its place is constant, and the problem of solution is also the flow cavitation problem of a certain fixed space after air entraining facilities.It is all like this falling bank and rise bank air entraining facilities as gallery top board air entraining facilities, lintel air entraining facilities and sudden expansion chamber after the flood discharging tunnel air entraining facilities of a large amount of utilizations, ship lock valve, and the utility model for valve root edge flow cavitation problem, its cavitation source is with the spatially constantly variation of valve opening process, air entraining facilities by fixed position is to the cavitation source place aeration of this variation, and effect is undesirable.Therefore be all the time by change valve root edge pattern and behind the door the measure such as culvert shape solve this thorny problem, and on the utility model valve that air entraining facilities is arranged in to rotation off the beaten track, obtaining stable ventilatory effect in the border constantly changing in locus and with flow direction angle is the novel part of uniqueness of the present utility model.
The utility model improves ship lock valve section flow cavitation problem with simple measures, avoid occurring cavitation erosion, not only can improve the safety of ship lock operation, also can reduce valve section buried depth, simplify valve section culvert shape, avoid because of the too complicated new cavitation source that forms of valve section build, also can reduce valve section gallery difficulty of construction and construction costs simultaneously, reduce aeration equipment, thereby reduce ship lock operational and administrative expenses.
Case study on implementation
The utility model high-lift lock water-delivery valve root edge aeration system is studied on certain high-lift lock water-carriage system valve section model, research shows by adjusting valve root edge build, can make root edge in valve opening process, particularly in the time that valve moves to least favorable aperture scope, stable negative pressuren zone can be there is, the needs of root edge natural ventilation can be met.In addition, tested the perforation validity of ventilating pipe swivel coupling in certain high-lift lock prototype, test shows, adopts the existing swivel coupling in market can ensure with the ventilating pipe of valve motion unimpeded.
The above; it is only detailed description of the invention of the present utility model; but protection domain of the present utility model is not limited to this; any belong to those skilled in the art the utility model disclose technical scope in; the variation that can expect easily or replacement, within all should being encompassed in protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of claim.
Claims (3)
1. a high-lift lock water-delivery valve root edge aeration system, comprise water-delivery valve (1), water delivery gallery (2), described water-delivery valve (1) adopts without the anti-arc door of gate slot, comprise that valve props up hinge (4), valve panel and connection valve prop up the valve support arm (5) of hinge (4) and valve panel, it is characterized in that: also comprise the first ventilating pipe (7), swivel coupling (6), the second ventilating pipe (11), described the first ventilating pipe (7) is imbedded in concrete in the time that valve well (3) is built, the entrance point of the first ventilating pipe (7) is positioned at valve well (3) top, join with atmosphere, the root edge of water-delivery valve (1) is drawn the second ventilating pipe (11) communicating with the external world, described the second ventilating pipe (11) enters valve along valve support arm (5) and props up hinge (4), and described valve props up hinge (4) and locates to arrange the swivel coupling (6) that connects the first ventilating pipe (7) and the second ventilating pipe (11).
2. high-lift lock water-delivery valve root edge aeration system as claimed in claim 1, it is characterized in that: the root edge of water-delivery valve (1) is provided with a step-like bank that falls as aerator (14), the ladder of described aerator (14) is provided with multiple root edge air vents (12), described multiple root edge air vents (12) are communicated with ventilation transverse tube (13), and ventilation transverse tube (13) is communicated with described the second ventilating pipe (11).
3. high-lift lock water-delivery valve root edge aeration system as claimed in claim 1, is characterized in that: the pipeline of the first ventilating pipe (7) is divided into two, and one joins with atmosphere, and import department arranges unidirectional air door (8); Another connects air collector (9) and air compressor (10) successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420061354.2U CN203684195U (en) | 2014-02-11 | 2014-02-11 | Lip air entrainment system for water delivery valve of high-lift ship lock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420061354.2U CN203684195U (en) | 2014-02-11 | 2014-02-11 | Lip air entrainment system for water delivery valve of high-lift ship lock |
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| Publication Number | Publication Date |
|---|---|
| CN203684195U true CN203684195U (en) | 2014-07-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420061354.2U Withdrawn - After Issue CN203684195U (en) | 2014-02-11 | 2014-02-11 | Lip air entrainment system for water delivery valve of high-lift ship lock |
Country Status (1)
| Country | Link |
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| CN (1) | CN203684195U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103758099A (en) * | 2014-02-11 | 2014-04-30 | 长江水利委员会长江科学院 | Bottom edge aerification system of water delivery valve of high lift lock |
| CN105544476A (en) * | 2016-02-01 | 2016-05-04 | 邓翔宇 | Flow control facility for pressure flood discharge orifice |
-
2014
- 2014-02-11 CN CN201420061354.2U patent/CN203684195U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103758099A (en) * | 2014-02-11 | 2014-04-30 | 长江水利委员会长江科学院 | Bottom edge aerification system of water delivery valve of high lift lock |
| CN103758099B (en) * | 2014-02-11 | 2015-09-09 | 长江水利委员会长江科学院 | A kind of bottom edge aerification system of water delivery valve of high lift lock |
| CN105544476A (en) * | 2016-02-01 | 2016-05-04 | 邓翔宇 | Flow control facility for pressure flood discharge orifice |
| CN105544476B (en) * | 2016-02-01 | 2017-12-15 | 邓翔宇 | One kind has pressure discharge orifice flow control facility |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140702 Effective date of abandoning: 20150909 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20140702 Effective date of abandoning: 20150909 |
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| RGAV | Abandon patent right to avoid regrant |