CN108442340A - A kind of three-dimensional whole-section aeration bank - Google Patents
A kind of three-dimensional whole-section aeration bank Download PDFInfo
- Publication number
- CN108442340A CN108442340A CN201810131045.0A CN201810131045A CN108442340A CN 108442340 A CN108442340 A CN 108442340A CN 201810131045 A CN201810131045 A CN 201810131045A CN 108442340 A CN108442340 A CN 108442340A
- Authority
- CN
- China
- Prior art keywords
- aeration
- pier
- wedge shape
- bank
- flow
- 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.)
- Pending
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B8/00—Details of barrages or weirs ; Energy dissipating devices carried by lock or dry-dock gates
- E02B8/06—Spillways; Devices for dissipation of energy, e.g. for reducing eddies also for lock or dry-dock gates
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The present invention is to solve the problems, such as the cavitation and cavitation erosion of high-velocity flow, provides a kind of three-dimensional whole-section aeration bank, it reduces greatly difficulty of construction, and largely save engineering cost, and can be used under the situation compared with Small Bottom Slope.The technical solution adopted by the present invention is：Including abutment wall and bottom plate, it is provided with aeration bottom sill on bottom plate, is vertically arranged pier in wedge shape in the middle part of aeration bottom sill, the initial position of pier is overlapped with aeration bottom sill starting point in wedge shape, and vertical height and transverse width are zero.Aeration bottom sill gradually increases along the thickness of water (flow) direction.Longitudinal height of pier is as water (flow) direction gradually increases, transverse width is as water (flow) direction gradually broadens in wedge shape.The upstream face of pier is set as arc upstream face in wedge shape.
Description
One, technical field：
The present invention relates to belong to flood-discharge energy-dissipating field in hydraulic and hydroelectric engineering, and in particular to a kind of three-dimensional whole-section aeration bank.
Two, background technology：
With flourishing for water conservancy and hydropower cause, more and more big libraries of high dam are under construction or are in planning.
Due to the continuous increase of head, the problem of flood discharge flow velocity also increased dramatically, flood-discharge energy-dissipating, is increasingly prominent.
With the increase of flow velocity, the pressure of overcurrent wall surface is gradually reduced, and the pressure of certain point position is less than water inside water body
Saturated vapor pressure when just generate cavitation bubble, cavitation bubble gradually vacillates to the relatively high place of pressure and bursts in some moment
Go out, when cavitation bubble crumble and fall be positioned adjacent to overcurrent wall surface when, percussion will be generated to material, easily cause under long term and let out
The cavitation erosion of circulation road wall surface.
To solve the problems, such as the cavitation and cavitation erosion of high-velocity flow, engineering circles are generally using the method for artificial forced aeration to overcurrent wall
Face forms aeration properties.Flood discharging tunnel bottom aeration is mostly empty in one stabilization negative pressure of high-velocity flow bottom formation using choosing bank or falling bank
Chamber ensures flow aeration using suction function.Traditional air mixing corrosion reducing facility can be used choose bank, fall bank, aeration slot, side extend to
Its various combination form, build and size generally should be verified and optimize through hydraulic model test.But due to general tradition meaning
Bottom aerator in justice is submerged in needs the re-entrant portion between aerator end facade and deflecting nappe corresponding under water
Side wall both sides open up hole and build individually ventilation well tonifying Qi is carried out to it.This had both increased engineering construction difficulty, also increased
Big engineering cost.Custom backplane aerator arrangement form is shown in Fig. 1.
Three, invention content
The present invention is to solve the problems, such as the cavitation and cavitation erosion of high-velocity flow, provides a kind of three-dimensional whole-section aeration bank.
To achieve the above object, the technical solution adopted by the present invention is：A kind of three-dimensional whole-section aeration bank, including abutment wall and
Bottom plate, it is characterised in that：It is provided with aeration bottom sill on the bottom plate, is vertically arranged in wedge shape in the middle part of the aeration bottom sill
Pier, the initial position of pier is overlapped with aeration bottom sill starting point in wedge shape, and vertical height and transverse width are zero.
The aeration bottom sill gradually increases along the thickness of water (flow) direction.
Longitudinal height of pier is as water (flow) direction gradually increases, transverse width is as water (flow) direction is gradual in the wedge shape
It broadens.
The upstream face of pier is set as arc upstream face in the wedge shape.
Bank is highhIt is chosen for 0.5 ~ 2.0m according to specific Practical Project, to which bank is longL=h/α,αTo choose the bank gradient。
Pier is set to the axis line position for letting out trench bottom in wedge shape.
The exit width of pier in wedge shapebValue range be chosen for according to concrete engineering actual state（1/24~1/6）B,
InBTo let out slot overall width.
Compared with prior art, the invention has the advantages that and effect：
1, continuous flow originally is separated into symmetrical two strands of left and right by the present invention by the way that pier in wedge shape is arranged, and then passes through setting
It is formed simultaneously the natural cavity between bottom cavity and two strands of overflows, and bottom cavity and natural cavity in the aeration ramp of bottom plate
Nature Link no longer needs to be separately provided ventilation well and carries out tonifying Qi to it, significantly reduces difficulty of construction, largely save
Engineering cost；
Even 2, aerator proposed by the present invention can use under the situation compared with Small Bottom Slope, even return water has flooded bottom
Cavity, the natural cavity that also buffer action of intermediate wedge pier body can be relied on to generate more adequately mix deflecting nappe
Gas.
Four, it illustrates
Fig. 1 is custom backplane aerator schematic diagram；
The three-dimensional whole-section aeration bank schematic diagram of Fig. 2 present invention；
Fig. 3 is the vertical view of Fig. 2；
Fig. 4 is the sectional view of Fig. 2；
The novel aerator fluidised form figures of Fig. 5；（a）Whole fluidised form figure；（b）Aerator tail portion empty cavity position fluidised form sectional view；
Reference sign：1- abutment walls, pier in 2- wedge shapes, 3- arc upstream faces, 4- aeration bottom sills, 5- bottom plates
Five, specific implementation mode
It is limited with reference to specific embodiment technical scheme of the present invention is further：
The present invention provides a kind of three-dimensional whole-section aeration bank（Referring to Fig. 2）, including abutment wall 1 and bottom plate 5 are set on the bottom plate 5
It is equipped with aeration bottom sill 4, aeration bottom sill 4 gradually increases along the thickness of water (flow) direction；
The middle part of above-mentioned aeration bottom sill 4 is vertically arranged pier 2 in wedge shape, in wedge shape longitudinal height of pier 2 with water (flow) direction by
Cumulative big, transverse width gradually broadens with water (flow) direction, so that the continuous water body of script is divided into symmetrical two strands, due to wedge
The presence of pier in body, will form natural cavity between the flow of both sides, and the lower cavity formed with both sides deflecting nappe from
So connection.
The upstream face of pier 2 is set as arc upstream face 3 in above-mentioned wedge shape.
It is spacious to let out spillway top directly and atmosphere, it ensure that enough air can be continuously by both sides water
Natural cavity among tongue enters deflecting nappe lower part and forms aeration properties to overcurrent wall surface；And for without pressure flood discharging tunnel,
There is certain remaining height on its water surface top and remains the pressure little with normal pressure, so upper part space is fully able to
The tonifying Qi for providing aerator needs.
Aerator of the present invention is not required to be separately provided completely ventilation well and carries out tonifying Qi to it, to significantly reduce build it is difficult
Degree and engineering cost.Show that the present invention chooses the typical flow pattern of bank by numerical computations, as shown in Figure 5.
The wedge-shaped initial positions Zhong Dun are overlapped with aeration bottom sill starting point, and vertical height and transverse width are zero, and two
Person gradually increases along Cheng Jun, is connected not generating too strong water wing phenomenon to ensure high-velocity flow with the smooth-going of pier in wedge shape.
The gradual increase of vertical height is so that pier structure can adapt to the variation of different water depth and have at part-structure always in wedge shape
More than the water surface, and the gradual increase of transverse width can then ensure that flow is not in the phenomenon that being detached from pier side wall surface.
To ensure that high-velocity flow and the smooth-going of pier in wedge shape are connected, the inclined-plane that meets water of pier needs to be arranged to cambered surface in wedge shape,
To enable the preferably adherent traveling of upstream incoming, avoids the occurrence of and too strong around flow phenomenon and flow is caused to take off wall.
The main parameter of the present invention includes the exit width of pier in wedge shapeb, the outlet bank height of two side bottom aeratorshWith
And aerator fair current is to lengthL,（Referring to Fig. 3 and Fig. 4）
What engineering used in practice chooses the bank gradientαIt varies less, about between 1: 5 to 1: 15, and Kan PoαVariation to fluidised form
Influence be not obvious.Therefore, the arrangement of aerator, which essentially consists in, determines that bank is high.Bank height choose principle be：In various utilizations
Under the conditions of, stable cavity and good fluidised form must be kept after bank, otherwise, manually prominent body will be become by choosing bank, in high-velocity flow
Divergence type hole, cavitation erosion caused by instead resulting in artificially will occur when passing through.In general, bank is highhIt can be according to specific reality
Border engineering is chosen for（0.5~2.0）M, to which bank is longL=h/α
Symmetrical fluidised form can be formed after going out bank for the trajectory nappe of the wedge-shaped both sides Zhong Dun, thus will not be due to both sides flow
Asymmetry generates poor fluidised form, and pier needs are set to the axis line position for letting out trench bottom in wedge shape.
The exit width of pier in wedge shapebBigger, then the natural cavity that both sides flow is formed therebetween after growing is bigger, is conducive to
It is rolled up suck and carries out aeration to overflow lower edge；ButbBigger, then both sides flow is deeper in the depth of water for choosing bank outlet, this is unfavorable
In the formation for choosing bank tail portion bottom cavity.Usually,bValue range can be chosen for according to concrete engineering actual state（1/24~1/
6）B, whereinBTo let out slot overall width.
Claims (7)
1. a kind of three-dimensional whole-section aeration bank, including abutment wall（1）And bottom plate（5）, it is characterised in that：The bottom plate（5）On set
It is equipped with aeration bottom sill（4）, the aeration bottom sill（4）Middle part be vertically arranged pier in wedge shape（2）, wedge shape in pier（2）Starting
Position and aeration bottom sill（4）Starting point overlaps, and vertical height and transverse width are zero.
2. a kind of three-dimensional whole-section aeration bank according to claim 1, it is characterised in that：The aeration bottom sill（4）Edge
The thickness for water (flow) direction gradually increases.
3. a kind of three-dimensional whole-section aeration bank according to claim 2, it is characterised in that：Pier in the wedge shape（2）'s
Longitudinal height is as water (flow) direction gradually increases, transverse width is as water (flow) direction gradually broadens.
4. a kind of three-dimensional whole-section aeration bank according to claim 2 or 3, it is characterised in that：Pier in the wedge shape（2）
Upstream face be set as arc upstream face（3）.
5. a kind of three-dimensional whole-section aeration bank according to claim 4, it is characterised in that：Bank is highhAccording to specific practical work
Journey is chosen for 0.5 ~ 2.0m, to which bank is longL=h/α,αTo choose the bank gradient。
6. a kind of three-dimensional whole-section aeration bank according to claim 4, it is characterised in that：Pier, which is set to, in wedge shape lets out slot bottom
The axis line position in portion.
7. a kind of three-dimensional whole-section aeration bank according to claim 4, it is characterised in that：The exit width of pier in wedge shapeb
Value range be chosen for according to concrete engineering actual state（1/24~1/6）B, whereinBTo let out slot overall width.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810131045.0A CN108442340A (en) | 2018-02-09 | 2018-02-09 | A kind of three-dimensional whole-section aeration bank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810131045.0A CN108442340A (en) | 2018-02-09 | 2018-02-09 | A kind of three-dimensional whole-section aeration bank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108442340A true CN108442340A (en) | 2018-08-24 |
Family
ID=63192072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810131045.0A Pending CN108442340A (en) | 2018-02-09 | 2018-02-09 | A kind of three-dimensional whole-section aeration bank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108442340A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110273406A (en) * | 2019-08-12 | 2019-09-24 | 重庆交通大学 | A kind of three-dimensional tunneling boring side diffused air aeration bank |
| CN110902851A (en) * | 2019-10-30 | 2020-03-24 | 南昌工程学院 | Ecological reoxygenation device for small and medium-sized river channels |
| CN112112100A (en) * | 2020-09-18 | 2020-12-22 | 广州维他科技有限公司 | Station safety inspection unidirectional roller gate of lining up |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2266364C1 (en) * | 2004-04-29 | 2005-12-20 | Васильев Алексей Михайлович | Flow spreading hump of projecting spillway structure part |
| CN103410129A (en) * | 2013-08-06 | 2013-11-27 | 中国长江三峡集团公司 | Multistage step drop energy dissipater structure |
| CN103276703B (en) * | 2013-06-14 | 2015-03-11 | 西北农林科技大学 | Folded-line shape diversion pier of spillway |
| CN105908684A (en) * | 2016-05-31 | 2016-08-31 | 南昌大学 | River water automatic energy dissipation silt pipe |
| CN107119644A (en) * | 2017-05-19 | 2017-09-01 | 四川大学 | One lock porous type open channel is pressed into a mouthful whole-section aeration hydraulic facility |
-
2018
- 2018-02-09 CN CN201810131045.0A patent/CN108442340A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2266364C1 (en) * | 2004-04-29 | 2005-12-20 | Васильев Алексей Михайлович | Flow spreading hump of projecting spillway structure part |
| CN103276703B (en) * | 2013-06-14 | 2015-03-11 | 西北农林科技大学 | Folded-line shape diversion pier of spillway |
| CN103410129A (en) * | 2013-08-06 | 2013-11-27 | 中国长江三峡集团公司 | Multistage step drop energy dissipater structure |
| CN105908684A (en) * | 2016-05-31 | 2016-08-31 | 南昌大学 | River water automatic energy dissipation silt pipe |
| CN107119644A (en) * | 2017-05-19 | 2017-09-01 | 四川大学 | One lock porous type open channel is pressed into a mouthful whole-section aeration hydraulic facility |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110273406A (en) * | 2019-08-12 | 2019-09-24 | 重庆交通大学 | A kind of three-dimensional tunneling boring side diffused air aeration bank |
| CN110273406B (en) * | 2019-08-12 | 2021-03-30 | 重庆交通大学 | Three-dimensional full-section side diffusion aerator |
| CN110902851A (en) * | 2019-10-30 | 2020-03-24 | 南昌工程学院 | Ecological reoxygenation device for small and medium-sized river channels |
| CN112112100A (en) * | 2020-09-18 | 2020-12-22 | 广州维他科技有限公司 | Station safety inspection unidirectional roller gate of lining up |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108442340A (en) | A kind of three-dimensional whole-section aeration bank | |
| CN102277862B (en) | Side-wall aeration ramp for free flow tunnel | |
| CN108221843A (en) | A kind of discharge structure structure of water conservancy | |
| CN2915940Y (en) | Curved aerated chute | |
| CN106930199A (en) | Improve the fairing of arc Box-shaped Drainage Culvert water outlet fluidised form | |
| CN202626947U (en) | Picking flow type flaring pier of overflow dam | |
| CN212896234U (en) | Connection structure of bank spillway slow-leveling section and steep groove section | |
| CN216839320U (en) | Anti-cavity-flooding aerator structure capable of controlling transverse ventilation quantity | |
| CN107663851A (en) | A kind of anti-cavitation curved Stepped Spillway of destruction | |
| CN108517842B (en) | Asymmetric aeration method suitable for curved spillway | |
| CN101538842B (en) | Heterotype sudden enlargement and sudden drop aerator | |
| CN209025057U (en) | The baffle wall style of bottom hollow out | |
| CN110273406A (en) | A kind of three-dimensional tunneling boring side diffused air aeration bank | |
| CN106638504A (en) | Energy dissipation and erosion control structure used for energy dissipation by bottom flow and used in water conservancy project | |
| CN202108033U (en) | Sidewall ventilated aerator and free-flow tunnel equipped with sidewall ventilated aerator | |
| CN207525718U (en) | A kind of flood discharging tunnel gentle slope and abrupt slope connection structure | |
| CN203684182U (en) | Improved spillway | |
| CN109594533B (en) | Vortex chamber stilling pool | |
| CN218969937U (en) | Bottom aeration structure of flood discharge facility | |
| CN212294570U (en) | Energy dissipation pool with inverted triangular wedge tail pier | |
| CN108149769A (en) | A kind of method for improving Urban Waterlogging pumping plant side unit Inlet flow pattern | |
| CN217974257U (en) | Space energy dissipation and aerated spillway structure | |
| CN208995999U (en) | A kind of asynchronous three-dimensional air mixing corrosion reducing structure | |
| CN207727508U (en) | A kind of topological training wall of flexibility for beheaded river running water | |
| CN207681475U (en) | A kind of anti-vortex lengthening type upper nozzle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180824 |