CN208009378U - A kind of longitudinal direction formula High-low Bucket Energy Dissipation Building straggly - Google Patents
A kind of longitudinal direction formula High-low Bucket Energy Dissipation Building straggly Download PDFInfo
- Publication number
- CN208009378U CN208009378U CN201820416356.7U CN201820416356U CN208009378U CN 208009378 U CN208009378 U CN 208009378U CN 201820416356 U CN201820416356 U CN 201820416356U CN 208009378 U CN208009378 U CN 208009378U
- Authority
- CN
- China
- Prior art keywords
- bank
- angle
- chosen
- tall
- choose
- 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 - Fee Related
Links
Abstract
A kind of longitudinal direction formula High-low Bucket Energy Dissipation Building straggly, is related to a kind of energy dissipater of hydraulic and hydroelectric engineering, especially a kind of trajectory bucket type energy of discharge structure outlet section.It includes that bank is chosen and bank is chosen at low angle of choosing in tall angle, it includes that bank is chosen and bank is chosen at the tall angle of billet in the tall angle of strip that its key technology, which is that bank is chosen at tall angle, choose that bank is chosen at the tall angle of bank, strip and to choose bank in the longitudinal direction be in that formula straggly arranges at billet tall angle in low angle of choosing, i.e. bank is chosen at the tall angle of strip and the tall angle of billet is chosen straggly before and after bank, and tall angle chooses bank and low choose angle to choose bank straggly in height.The utility model has the beneficial effects that：Using flip trajectory bucket principle, letdown flow is divided into the share split overflow of three kinds of different shooting angles when flowing through this energy dissipater, can elongate overflow as far as possible; increase and air contact area; flow is chosen remote as far as possible from weir location, multiple scour holes is formed, to protect the basis of discharge structure.
Description
Technical field：
The utility model is related to choosing for a kind of energy dissipater of hydraulic and hydroelectric engineering, especially a kind of discharge structure outlet section
Flow energy dissipater.
Background technology：
In hydraulic and hydroelectric engineering, the discharge structures such as gate dam, spillway, flood discharging tunnel are compared with the form for mostly using flip trajectory bucket
Dissipation energy.Flip trajectory bucket refers to that defrlector bucket is arranged in discharge structure end so that flow downstream flip shot.Pass through jet stream
Skyborne diffusion, turbulent fluctuation and aeration effect, fall after eliminating portion of energy in the riverbed of downstream.And in scour hole and water cushion
Portion of energy is eliminated again.Wherein defrlector bucket can be divided into continous way, differential type, narrow slit type, diffusion type etc. by build.And differential type
Defrlector bucket chooses the high bank at angle by a series of differences and the alternate arrangement of low bank is constituted, therefore again can entitled height bank formula flip trajectory bucket
Work.The outgoing overflow for flowing through this bucket lip disperses up and down, and contact area increase, the turbulent fluctuation of each stock overflow and air are stronger.
Defrlector bucket can effectively control position, range and flow distribution that jet stream falls into underwater bed by bucket lip build,
But it is more serious to washing away for downstream.The hydraulic factors for influencing local scour hole have：Water levels of upstream and downstream is poor, water flows into the single wide of water
Flow, the energy loss of crest overflow section and aerial diffuser, overflow immersion angle, the spallation of overflow and aeration degree etc..Wherein
The above two are to influence maximum principal element at (discharge per unit width of water levels of upstream and downstream difference and water inflow water).Existing height bank disappears
Can work longitudinal diffusion degree it is limited, positioned at same cross section height bank rise choose a little so that choose away from starting point it is identical, enter water Dan Kuanliu
It measures larger, the base stabilization of hydraulic structure is unfavorable for washing away for water cushion pool downstream.
Invention content：
Problem to be solved in the utility model provides one kind and further increasing height bank energy dissipating aiming above insufficient
Work is emitted overflow longitudinal diffusion area, reduces the trajectory bucket type energy for the hydraulic and hydroelectric engineering that flow washes away downstream river course.Its skill
Art scheme is as follows：
The utility model includes that bank is chosen and bank is chosen at low angle of choosing in tall angle, and it includes strip that key technology, which is that bank is chosen at tall angle,
Bank is chosen at tall angle and bank is chosen at the tall angle of billet, and two tall angles of strip choose bank and are located at the low both sides chosen angle and choose bank, and billet is high
It chooses angle and chooses bank and be located at low angle of choosing and choose on bank and be located at the low centre position chosen angle and choose bank, the tall angle of bank, billet is chosen at the tall angle of strip
Choose bank and it is low choose angle and choose rising for bank choose a little on the same cross section, the longitudinal length of bank is chosen at the tall angle of strip and bank is chosen at low angle of choosing
Longitudinal length it is equal, the longitudinal length that bank is chosen at the tall angle of billet is the longitudinal length that bank is chosen at the tall angle of strip
Bank is chosen at the tall angle of strip and to choose the flip shot angle of bank be 10 °~35 ° at billet tall angle.
It is described it is low choose angle choose bank flip shot angle be 3 °~5 °.
Compared with prior art, the utility model has the advantages that：
1, using flip trajectory bucket principle, letdown flow is divided into point of three kinds of different shooting angles when flowing through this energy dissipater
Stock overflow, what respectively bank was chosen at the tall angle of strip chooses angle θ1, what bank was chosen at the tall angle of billet chooses angle θ2And bank θ is chosen at low angle of choosing3, θ1
And θ2Choose 10 °~35 ° of angle value, overflow can be elongated as far as possible, increase and air contact area, flow is chosen from weir location
It is remote as far as possible, to protect the basis of discharge structure, and θ3To choose angle smaller, be 3 °~5 °, can be by low bank overflow and its
He mutually staggers the outgoing overflow of angle, is conducive to the mutual collision energy dissipating of each stock overflow.
2, the longitudinal length for choosing bank due to the tall angle of billet is smaller, that is, chooses bank end and be located at before other choose bank, flow through short
The overflow that bank is chosen at the tall angle of item will choose bank and low bank prior to the tall angle of strip and rise and choose.It can be obtained away from estimation formula or model experiment by choosing
It must choose away from and obtain a scour hole position；And to choose bank different with angle is chosen due to choosing bank terminal position at the tall angle of strip of both sides,
The share split overflow flowed through will form two scour hole positions of the left and right sides；Although and bank is chosen in low bank end with the tall angle of strip
End be located at same cross section, but due to choosing angle difference, and it is intermediate by the tall angle of billet choose bank between be divided into left and right two parts, again
Two scour hole positions can be additionally formed.In other words, the setting of longitudinal formula height bank straggly can form multiple jets, be effectively increased
The longitudinal diffusion degree of flow, air contact area so that moisture mixing is more violent, the position relative distribution of each scour hole,
Be conducive to mitigate and underwater bed is washed away, protects base fixed.
3, the tall angle of strip chooses bank and chooses the wide setting of bank with the tall angle of billet, and the two width is chosen equal to the tall angle of billet
Bank chooses the distance of bank to the tall angle of side strip.Such parameter setting be for allow it is lower sluice stream the purpose evenly distributed,
Avoid excessively concentrating so as to cause to uprush destruction and the cavitation erosion of choosing bank local pressure for overflow flow.
4, in conclusion the utility model, which further increases height bank energy dissipater, is emitted overflow longitudinal diffusion area, reinforce
The collision turbulent fluctuation energy of overflow and air reduces the discharge per unit width that water flows into water, increases scour hole number and area, avoids lower sluicing
It flows through and downstream river course is washed away with reducing flow in concentration.
Description of the drawings：
Fig. 1 is the utility model structure diagram；
Fig. 2 is the utility model from weir crest Parallel to the flow direction vertical view；
Fig. 3 is the utility model from weir crest Parallel to the flow direction vertical view (another mark)；
Fig. 4 is Fig. 3 A-A sectional views；
Fig. 5 is Fig. 2 right views.
Specific implementation mode：
Referring to Fig. 1~Fig. 5, the utility model includes that bank is chosen and bank 3 is chosen at low angle of choosing in tall angle, and key technology is tall
It includes that bank 1 is chosen and bank 2 is chosen at the tall angle of billet in the tall angle of strip that bank is chosen at angle, and two tall angles of strip, which are chosen bank 1 and are located at, low chooses angle
The both sides of bank 3 are chosen, the tall angle of billet is chosen bank 2 and chosen on bank 3 and positioned at the low centre position chosen angle and choose bank 3 positioned at low angle of choosing.Strip
Tall angle choose the tall angle of bank 1, billet choose bank 2 and it is low choose angle and choose rising for bank 3 choose a little same cross positioned at immediately anti-arc radius section B-B
In section C-C, the tall angle of strip chooses the longitudinal length L1 of bank 1 and chooses that the longitudinal length L3 of bank (3) is equal, and billet is tall with low angle of choosing
The longitudinal length L2 that bank 2 is chosen at angle is the longitudinal length L1 that bank 1 is chosen at the tall angle of stripSo that bank 3, strip are chosen in low angle of choosing
It is in that formula straggly arranges that tall angle, which chooses the tall angle of bank 1, billet and chooses bank 2 in the longitudinal direction, i.e., bank and the tall angle of billet are chosen in the tall angle of strip
Choose it is straggly before and after bank, tall angle choose bank and it is low choose angle to choose bank straggly in height, constitute longitudinal formula height bank energy dissipater straggly, therefore
Lower sluicing stream is being divided into three kinds of overflows after anti-arc radius section.
The shooting angle that bank is chosen at the tall angle of strip is θ1, the shooting angle that the tall bank of billet chooses angle is θ2, two are chosen angle
Value range be 10 °~35 °, be conducive to the abundant injection of overflow, it is as big as possible with air contact area, with reach relatively manage
The effect of energy dissipation thought.
The low shooting angle θ for choosing angle and choosing bank3, value range is 3 °~5 °.Relatively high bank to choose angle lower, be conducive to
It is staggered with the deflecting nappe of high bank, contributes to more violent moisture mixing.
It is described it is low choose angle and choose the transverse width B3 of bank 3 choose the distance between bank 1 equal to two tall angles of strip.
The tall angle of strip choose the tall angle of bank 1, billet choose bank 2 be it is wide choose bank, the transverse direction of bank 1 is chosen at the tall angle of strip
The transverse width B2 that bank 2 is chosen at width B1 and the tall angle of billet is equal, and bank 2 is chosen at the tall angle of billet and bank 1 is chosen at strip tall angle in both sides
Distance L4 and the tall angle of billet equal, the i.e. B2=L4 that chooses the transverse width B2 of bank 2, and the transverse direction of bank 1 is chosen at the tall angle of strip
Width chooses the sum of transverse width of bank 3 equal to downflow weir overall width with low angle of choosing.
It chooses the tall angle of bank 1, billet and chooses bank 2 and the low tail end top setting slope chosen angle and choose bank 3 in the tall angle of strip
4, the stabilization and reinforcement for choosing bank.
The utility model energy dissipating principle is as follows：Flow through the tall angle of intermediate billet choose the flow of bank 2 due to its longitudinal length compared with
It is short, overflow weir is left by flip shot first, is formed by scour hole position also relative close.It flows through the tall angle of strip and chooses bank and low
It rises although choosing angle and choosing the overflow of bank and chooses a little identical, cause finally to choose away from unequal due to choosing the difference at angle.Three kinds of differences go out
Five strands of overflows of firing angle degree mutual friction energy dissipation in the air, will so form multiple scour holes, significantly increase flow
Longitudinal diffusion degree and contact area with air, have disperseed concentration local scour point of the trajectory nappe to riverbed, have been conducive to letting out
The basis protection of water buildings.
Claims (6)
1. a kind of longitudinal direction formula High-low Bucket Energy Dissipation Building straggly, including bank is chosen at tall angle and bank (3) is chosen at low angle of choosing, it is characterised in that
It includes that bank (1) is chosen and bank (2) is chosen at the tall angle of billet in the tall angle of strip that bank is chosen at tall angle, and bank (1) is chosen respectively in two tall angles of strip
Positioned at the low both sides chosen angle and choose bank (3), the tall angle of billet, which chooses bank (2) and is located at low angle of choosing, chooses on bank (3) and chooses bank positioned at low angle of choosing
(3) centre position, bank (1) is chosen at the tall angle of strip, bank (2) is chosen at the tall angle of billet and it is low choose angle and choose rising for bank (3) choose and be a little located at
On same cross section, the tall angle of strip chooses the longitudinal length of bank (1) and chooses that the longitudinal length of bank (3) is equal, and billet is high with low angle of choosing
It is longitudinal length that bank (1) is chosen at the tall angle of strip to choose angle and choose the longitudinal length of bank (2)
2. longitudinal direction formula High-low Bucket Energy Dissipation Building straggly according to claim 1, it is characterised in that choose bank in the tall angle of strip
(1) and to choose the flip shot angle of bank (2) be 10 °~35 ° at billet tall angle.
3. longitudinal direction formula High-low Bucket Energy Dissipation Building straggly according to claim 1, it is characterised in that choose bank (3) in low angle of choosing
Flip shot angle is 3 °~5 °.
4. longitudinal direction formula High-low Bucket Energy Dissipation Building straggly according to claim 1, it is characterised in that choose bank (3) in low angle of choosing
Transverse width chooses the distance between bank (1) equal to two tall angles of strip.
5. longitudinal direction formula High-low Bucket Energy Dissipation Building straggly according to claim 1, it is characterised in that choose bank in the tall angle of strip
(1) transverse width that bank (2) is chosen at the tall angle of transverse width and billet is equal, and bank (2) is chosen at the tall angle of billet and both sides strip is high
Angle is chosen to choose the distance of bank (1) to choose the transverse width of bank (2) with the tall angle of billet equal.
6. longitudinal direction formula High-low Bucket Energy Dissipation Building straggly according to claim 1, it is characterized in that choosing bank at the tall angle of strip
(1), bank (2) and the low tail end top setting slope (4) chosen angle and choose bank (3) are chosen in the tall angle of billet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820416356.7U CN208009378U (en) | 2018-03-27 | 2018-03-27 | A kind of longitudinal direction formula High-low Bucket Energy Dissipation Building straggly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820416356.7U CN208009378U (en) | 2018-03-27 | 2018-03-27 | A kind of longitudinal direction formula High-low Bucket Energy Dissipation Building straggly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208009378U true CN208009378U (en) | 2018-10-26 |
Family
ID=63890546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820416356.7U Expired - Fee Related CN208009378U (en) | 2018-03-27 | 2018-03-27 | A kind of longitudinal direction formula High-low Bucket Energy Dissipation Building straggly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208009378U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109826298A (en) * | 2019-02-18 | 2019-05-31 | 枣庄学院 | A kind of mud-rock flow aerofoil profile drainage groove structure |
-
2018
- 2018-03-27 CN CN201820416356.7U patent/CN208009378U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109826298A (en) * | 2019-02-18 | 2019-05-31 | 枣庄学院 | A kind of mud-rock flow aerofoil profile drainage groove structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108086260B (en) | Differential type High-low Bucket Energy Dissipation Building-height falls bank type stilling pond system and energy dissipating method | |
| CN103806419A (en) | Rectification pool type fishway and flow state control method | |
| CN207003391U (en) | A kind of water gate energy-dissipating installation | |
| CN101182707A (en) | Flood discharging and energy dissipating device | |
| CN106498909B (en) | For spillway on bank or the defrlector bucket of flood discharge hole outlet | |
| CN208009378U (en) | A kind of longitudinal direction formula High-low Bucket Energy Dissipation Building straggly | |
| CN203530941U (en) | Split-level and dislocated type multiple-grooved spillway structure | |
| CN202626947U (en) | Picking flow type flaring pier of overflow dam | |
| CN205421200U (en) | A class dissipation structure is chosen in outlet structure escape works export | |
| CN201915369U (en) | Vehicle sheet water flow control and energy dissipation structure for high overfall dam | |
| CN109098152B (en) | Anti-cavitation facility of ladder overflow dam | |
| CN206408596U (en) | The double defrlector bucket energy dissipaters of narrow slit type | |
| CN204982814U (en) | Power that disappears structure in low water head dam low reaches riverbed | |
| CN203429607U (en) | Combination high-low threshold stilling pool with flow deflecting structure | |
| CN106638504B (en) | The dissipation and scouring structure of energy dissipation by hydraulic jump in a kind of hydraulic engineering | |
| CN106013009A (en) | Multi-reverse-slope type stilling pool | |
| CN204139139U (en) | Flood discharge absorption basin structure | |
| CN209412796U (en) | A kind of energy dissipation by hydraulic jump structure extending to stilling pond suitable for flaring gate pier | |
| CN206928256U (en) | Overfall dam flip trajectory bucket facility | |
| CN203654245U (en) | Auxiliary energy dissipation structure for flood discharging tunnel outlet in hydraulic and hydro-power engineering | |
| CN206971181U (en) | A kind of multichannel bank stiling basin of dispersible energy dissipating | |
| CN205035778U (en) | Flip trajectory bucket worker | |
| CN208762979U (en) | Band blocks water the stilling pond or cushion pool of pier | |
| CN207739232U (en) | A kind of Y type flaring gate piers with stilling pond combined energy dissipation | |
| CN111101491A (en) | Asymmetric steering contraction differential flip bucket body type |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181026 Termination date: 20200327 |