CN108343037A - Reduce the layering flood discharge structure of flood discharge fog precipitation amount - Google Patents
Reduce the layering flood discharge structure of flood discharge fog precipitation amount Download PDFInfo
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- CN108343037A CN108343037A CN201810412361.5A CN201810412361A CN108343037A CN 108343037 A CN108343037 A CN 108343037A CN 201810412361 A CN201810412361 A CN 201810412361A CN 108343037 A CN108343037 A CN 108343037A
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- exhalant canal
- flood discharge
- water outlet
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- precipitation amount
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- 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
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- General Engineering & Computer Science (AREA)
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Abstract
The layering flood discharge structure for reducing flood discharge fog precipitation amount is related to flood discharge field, and to reduce flood discharge fog precipitation amount, technical solution is：Floodwater releasing port is divided into multiple exhalant canals, vertical direction vertical profile, all exhalant canals are all rectangle, top exhalant canal is horizontal, remaining exhalant canal is bent downwardly, water outlet inner wall upper surface is known as the angle of emergence along the tangent line of water (flow) direction and the angle of horizontal direction, and from bottom exhalant canal to top exhalant canal, the angle of emergence is gradually reduced；The area of top exhalant canal water outlet is the area 80 90% of its water inlet.The angle of emergence of bottom exhalant canal is 45 degree.The width of the water outlet horizontal direction of each exhalant canal is both greater than the width of the horizontal direction of the water outlet of the exhalant canal of lower section, and the center line of all water outlets is all located in a plane.There is weather board in the upper surface of the water outlet of top exhalant canal.Advantageous effect is：Flood discharge fog precipitation amount is greatly lowered.
Description
Technical field
The present invention relates to the water mists that the water body below flood discharge field, especially flood discharge water slug is formed.
Background technology
According to professional person in patent a kind of " hydroelectric project flood-discharge atomizing Rainfall measurement method（Application number
201210327163.1）" described in：Flood-discharge atomizing refers to hinge downstream office during hydroelectric project discharge structure aerial drainage
Generated rainfall and spray phenomenon in portion region.Rainfall caused by flood discharge is often far longer than natural precipitation, at present flood discharge
The maximum raininess that atomized rain measures is up to 5000mm/h, and the routinely short time raininess in meteorology, more than 1000~2000mm/h
It is extremely rare.
It can be seen that fog precipitation caused by flood discharge is very big, and the duration is also long from above-mentioned document, to downstream two sides bank slope
Stabilization and the electric appliance and workshop in power station threaten safely, therefore, how to reduce flood discharge fog precipitation amount is exactly one urgent
The problem of.
Invention content
To reduce flood discharge fog precipitation amount, the present invention designs the layering flood discharge structure for reducing flood discharge fog precipitation amount.
The present invention realize goal of the invention the technical solution adopted is that：The layering flood discharge structure of flood discharge fog precipitation amount is reduced, it is special
Sign is：Floodwater releasing port is divided into 3-10 exhalant canal, vertical direction vertical profile, and all exhalant canals are all rectangle, top exhalant canal
Level, remaining exhalant canal are bent downwardly, and water outlet inner wall upper surface is along the tangent line of water (flow) direction and the angle of horizontal direction
The referred to as angle of emergence, from bottom exhalant canal to top exhalant canal, the angle of emergence is gradually reduced；The face of top exhalant canal water outlet
Product is the area 80-90% of its water inlet, and perpendicular and the exhalant canal perpendicular to exhalant canal water (flow) direction central axis exist
The area for the hole that water inlet vertical profile is formed is the area of water inlet, perpendicular to the vertical of exhalant canal water (flow) direction central axis
The area for the hole that plane and exhalant canal are formed in water outlet vertical profile for water outlet area.
The angle of emergence of bottom exhalant canal is 45 degree.Under the width of the water outlet horizontal direction of each exhalant canal is both greater than
The width of the horizontal direction of the water outlet of the exhalant canal of side, the center line of all water outlets are all located in a plane, center
Line refers to the straight line by water outlet centre of surface perpendicular to water outlet discharge surface.The upper surface of the water outlet of top exhalant canal
Have a weather board, i.e., the upper table of the inside of water outlet respectively extend towards both sides 0.5 meter -1 meter, the upper table of the inside of water outlet forward
End extends 0.5-1 meters.The flow of top exhalant canal is the 5%-10% of the total flood discharge flow of floodwater releasing port.
The beneficial effects of the invention are as follows：Since using flood discharge is layered, lower layer's exhalant canal flood discharge forms fog precipitation by upper layer
The blocking for the water curtain that exhalant canal is formed, to reduce the excessive of flood discharge fog precipitation；The center line of all water outlets is all located at one
In plane, i.e., each layer exhalant canal is symmetrical, is conducive to the water curtain of upper layer exhalant canal formation to lower layer's exhalant canal flood discharge
The blocking of the fog precipitation of formation（Covering）；Relative to existing flood discharge mode, the flood discharge fog precipitation that the present invention generates is substantially top
What exhalant canal was formed, if the flow of top exhalant canal is the 5%-10% of the total flood discharge flow of floodwater releasing port, flood discharge fog precipitation amount
It is greatly lowered.Top exhalant canal is since water outlet broadens, and the impact force of water-drop point reduces, the kinetic energy for the water mist that can be splash
It reduces, the distance that water mist is spread is enable to shorten dramatically：Know from common sense, throw away a boulder can splash larger spray,
Small spray can be splash by throwing away a small stone, lose a loose sand, then does not have spray substantially, and top exhalant canal water curtain falls
Overboard face falls the effect of the water surface closer to a loose sand.
Description of the drawings
Fig. 1 is exhalant canal schematic diagram；Fig. 2 is angle of emergence schematic diagram；Fig. 3 is multilayer exhalant canal schematic diagram；
Wherein, 1, exhalant canal, 2, water inlet, 3, water outlet, 4, the angle of emergence, 5, weather board.
Specific implementation mode
The layering flood discharge structure of flood discharge fog precipitation amount is reduced, it is characterized in that：Floodwater releasing port（The water outlet in the flood discharge channel of the prior art
Mouth position abbreviation floodwater releasing port）Be divided into multiple exhalant canals 1 (3-10 exhalant canal 1 is advisable, exhalant canal 1 be more than 10 after,
Its effect improves will not be too apparent), can be that multiple exhalant canals 1 are formed when building floodwater releasing port（That is integral structure）,
Can fix some device in existing floodwater releasing port to form multiple exhalant canals 1（That is separated structure, or it is referred to as removable
Formula structure is unloaded, be conducive to safeguard and is repaired）；The edge contour of vertical direction vertical profile, the inner void of all exhalant canals 1 is all
The bottom and upper segment of rectangle, rectangle is parallel to horizontal plane（That is the bottom and upper segment of 3 inside of water outlet is parallel to horizontal plane）, top
Portion's exhalant canal 1 is horizontally disposed（I.e. the upper and lower surface of top 1 inner wall of exhalant canal is all horizontal plane）, remaining water outlet
Channel 1 is bent downwardly（The upper face and lower surface for pointing out the inner wall of aquaporin 1 are bent downward along flow）, water outlet
Tangent line of the 3 inner wall upper surfaces along water (flow) direction（The upper and lower surface of 3 inner wall of water outlet is mutually parallel）With horizontal direction
Angle is known as the angle of emergence 4, and from bottom exhalant canal 1 to top exhalant canal 1, the angle of emergence 4 is gradually reduced（Top exhalant canal 1
The angle of emergence 4 be 0 degree）；The area of 1 water outlet 3 of top exhalant canal is the area 80-90% of its water inlet 2, is advantageously ensured that
The discharge pressure of water outlet 3, the perpendicular perpendicular to 1 water (flow) direction central axis of exhalant canal are being intake with exhalant canal 1
The area for the hole that 2 vertical profiles of mouth are formed is the area of water inlet 2, perpendicular to the vertical of 1 water (flow) direction central axis of exhalant canal
The area for the hole that plane and exhalant canal 1 are formed in 3 vertical profile of water outlet for water outlet 3 area, i.e., inside exhalant canal 1
Central axis upright is in perpendicular（Perpendicular is exactly vertical section herein）.Central axis, which refers to, passes through water inlet（Water outlet）Table
Face center and perpendicular to water inlet（Water outlet）The straight line on surface.
The angle of emergence 4 of bottom exhalant canal 1 is 45 degree.
The width of 3 horizontal direction of water outlet of each exhalant canal 1 is both greater than the water outlet 3 of the exhalant canal 1 of lower section
The center line of the width of horizontal direction, all water outlets 3 is all located in a plane, and center line refers to perpendicular to 3 table of water outlet
The straight line by 3 centre of surface of water outlet in face.It i.e. can be by all exhalant canals 1 along water (flow) direction in the presence of a perpendicular
It is bisected into two parts.
There are weather board 5, the i.e. inside of water outlet 3 in the upper surface of the water outlet 3 of top exhalant canal 1（Inner wall）Upper surface
Respectively extend 0.5 meter -1 meter, the inside of water outlet 3 to both sides（Inner wall）Upper surface forward end extend 0.5-1 meters, advantageously reduce
3 inner surface of water outlet is rough to cause water to sputter the fog precipitation to be formed.
The flow of top exhalant canal 1 is the 5%-10% of the total flood discharge flow of floodwater releasing port.
For being layered the strength problem of flood discharge:Layering flood discharge structure can be regarded as in the same horizontal flood discharge position（It is horizontal
Coordinate is identical）, in vertical direction（Ordinate）Arrange multiple flood discharge channels（Exhalant canal）, in flood discharge water out（Water outlet 3）,
Since the water outlet of lower end tilts down, the tube wall thickening between water outlet exhalant canal is conducive to enhancing tolerance flood discharge water
Impact force, do not change the construction in existing single flood discharge channel, therefore be feasible.
For Lapping quantity problem：The prior art makes water outlet decline, slightly rise again to reduce the impact force of water,
Keep flow upward, keeps part flow disorderly, while extending the landing time of water（Extend the action time of water and air）, advantage
It is the impact force for reducing flood discharge water, the disadvantage is that having aggravated the atomization of flood discharge water.The water outlet of the present invention can also be designed as choosing stream,
The present invention essentially consist in the top water curtain bridging effect of exhalant canal flood discharge water, top exhalant canal water outlet pressure（With
The head difference of the reservoir water surface）Many that water outlet relative to lower layer's exhalant canal has wanted small chooses stream atomization to top exhalant canal
Influence will not be very serious, therefore do not violated with existing Flow Technique of choosing.
Metal product, such as thick iron plate may be used in upper layer flood discharge channel, is fixed on upper layer flood discharge passway, it is resistance to enhance its
By ability：The surrounding caliber of top exhalant canal water outlet（Cavity）Pass through screw after metal product pipeline is inserted into more than front end
The insertion of fixed or bolt is weldingly fixed on water outlet again, after fixing metal product, the cement of metal product pipeline and front end
The engaging portion of pipeline is smoothly connected（Caliber is equal）.If it is serious that damaged or corrosion occurs in metal product water outlet, it is discharged
The metallic conduit of mouth can be replaced, convenient for safeguarding.
Claims (5)
1. the layering flood discharge structure of flood discharge fog precipitation amount is reduced, it is characterized in that：Floodwater releasing port is divided into 3-10 exhalant canal（1）, vertically
Direction vertical profile, all exhalant canals（1）All it is rectangle, top exhalant canal（1）Level, remaining exhalant canal（1）It is turned under
Song, water outlet（3）Inner wall upper surface is known as the angle of emergence along the tangent line of water (flow) direction and the angle of horizontal direction（4）, go out from bottom
Aquaporin（1）To top exhalant canal（1）, the angle of emergence（4）It is gradually reduced；Top exhalant canal（1）Water outlet（3）Area be
Its water inlet（2）Area 80-90%, perpendicular to exhalant canal（1）The perpendicular and exhalant canal of water (flow) direction central axis
（1）In water inlet（2）The area for the hole that vertical profile is formed is water inlet（2）Area, perpendicular to exhalant canal（1）Water (flow) direction
The perpendicular and exhalant canal of central axis（1）In water outlet（3）The area for the hole that vertical profile is formed is water outlet（3）Face
Product.
2. the layering flood discharge structure according to claim 1 for reducing flood discharge fog precipitation amount, it is characterized in that：Bottom exhalant canal
（1）The angle of emergence（4）It is 45 degree.
3. the layering flood discharge structure according to claim 1 for reducing flood discharge fog precipitation amount, it is characterized in that：Each exhalant canal
（1）Water outlet（3）The width of horizontal direction is both greater than the exhalant canal of lower section（1）Water outlet（3）Horizontal direction width
Degree, all water outlets（3）Center line be all located in a plane, center line refers to perpendicular to water outlet（3）Surface passes through
Water outlet（3）The straight line of centre of surface.
4. the layering flood discharge structure according to claim 1 for reducing flood discharge fog precipitation amount, it is characterized in that：Top exhalant canal
（1）Water outlet（3）Upper surface have weather board（5）, i.e. water outlet（3）Inside upper table respectively extend towards both sides 0.5 meter-
1 meter, water outlet（3）The upper surface forward end of inside extend 0.5-1 meters.
5. the layering flood discharge structure according to claim 1 for reducing flood discharge fog precipitation amount, it is characterized in that：Top exhalant canal
（1）Flow be the total flood discharge flow of floodwater releasing port 5%-10%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810412361.5A CN108343037B (en) | 2018-05-03 | 2018-05-03 | Reduce the layering flood discharge structure of flood discharge fog precipitation amount |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810412361.5A CN108343037B (en) | 2018-05-03 | 2018-05-03 | Reduce the layering flood discharge structure of flood discharge fog precipitation amount |
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| Publication Number | Publication Date |
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| CN108343037A true CN108343037A (en) | 2018-07-31 |
| CN108343037B CN108343037B (en) | 2019-11-08 |
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| CN201810412361.5A Expired - Fee Related CN108343037B (en) | 2018-05-03 | 2018-05-03 | Reduce the layering flood discharge structure of flood discharge fog precipitation amount |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112695709A (en) * | 2021-01-21 | 2021-04-23 | 四川大学 | Flood discharge structure |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040170475A1 (en) * | 2003-03-01 | 2004-09-02 | Hanna Leslie J. | Baffle Apparatus |
| CN102704449A (en) * | 2012-06-25 | 2012-10-03 | 中国水电顾问集团中南勘测设计研究院 | Big-discharge efficient energy dissipater structure of narrow river valley arch dam |
| CN106223273A (en) * | 2016-08-15 | 2016-12-14 | 四川大学 | A kind of apparatus and method for alleviating high dam flood-discharge atomizing |
-
2018
- 2018-05-03 CN CN201810412361.5A patent/CN108343037B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040170475A1 (en) * | 2003-03-01 | 2004-09-02 | Hanna Leslie J. | Baffle Apparatus |
| CN102704449A (en) * | 2012-06-25 | 2012-10-03 | 中国水电顾问集团中南勘测设计研究院 | Big-discharge efficient energy dissipater structure of narrow river valley arch dam |
| CN106223273A (en) * | 2016-08-15 | 2016-12-14 | 四川大学 | A kind of apparatus and method for alleviating high dam flood-discharge atomizing |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112695709A (en) * | 2021-01-21 | 2021-04-23 | 四川大学 | Flood discharge structure |
| CN112695709B (en) * | 2021-01-21 | 2021-09-03 | 四川大学 | Flood discharge structure |
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| CN108343037B (en) | 2019-11-08 |
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