CN207295659U - Mechanism of multi-horizontal submerged jets stiling basin - Google Patents
Mechanism of multi-horizontal submerged jets stiling basin Download PDFInfo
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- CN207295659U CN207295659U CN201721332909.2U CN201721332909U CN207295659U CN 207295659 U CN207295659 U CN 207295659U CN 201721332909 U CN201721332909 U CN 201721332909U CN 207295659 U CN207295659 U CN 207295659U
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- stiling basin
- jet exit
- sill
- current
- stiling
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Abstract
The utility model discloses a kind of mechanism of multi-horizontal submerged jets stiling basin, including：Current by pass, stiling basin, end sill, the end jet exit of the current by pass is connected with the front end of stiling basin and the lower end of jet exit is concordant with the bottom plate of stiling basin, the end sill is connected with the tail end of stiling basin, the end jet exit of the current by pass horizontal and vertical is divided into multiply multilayer jet exit along its, top layer jet exit is submerged under water, bottom jet exit is higher than force reduction pool bottom, the neighbouring interlaced arrangement of layer jet exit, between the upper and lower the jet exit of alternating floor be located in same perpendicular.The stiling basin of the utility model can effectively solve the problem that the hydraulic engineering flood-discharge energy-dissipating technical barrier that flood discharge front porch width is limited, discharge per unit width is larger, current are concentrated and jet stream underflow speed is very high.
Description
Technical field
A kind of energy dissipater is the utility model is related to, belongs to hydraulics dam energy-dissipating tech field.More specifically, this practicality
It is new to be related to a kind of mechanism of multi-horizontal submerged jets stiling basin.
Background technology
With developing rapidly for China's high dam construction, high water head large discharge per unit flood-discharge energy-dissipating problem is hydraulic engineering circle pole
For the research topic of concern.Flip trajectory bucket is atomized than more serious；Traditional energy dissipation by hydraulic jump atomization is relatively low, but current are concentrated and jet stream
Underflow speed is very high, and the anti-impact protection of bottom plate is difficult；The Current connectin situation of surface current is difficult to control, surface wave influence compared with
Far, it is unfavorable for downstream stream bank erosion control protection.Therefore, solution energy dissipation by hydraulic jump current are concentrated, underflow speed is big, force reduction pool bottom is stablized
The problems such as property, becomes engineering difficult point.The example that discharge structure caused by flood discharge high-velocity flow destroys is commonplace, has according to statistics
There is different degrees of destruction in the discharge structure of nearly 1/3 hydraulic and hydroelectric engineering, and it is most normal that downstream stiling basin safeguard structure, which destroys,
The form seen, flood-discharge energy-dissipating safety problem are very prominent, it has also become Design of Water Resources and Hydroelectric Projects and governing factor safe for operation
One of.
Utility model content
One purpose of the utility model is to solve at least the above, and provides the advantages of at least will be described later.
The utility model also has a purpose to be to provide a kind of mechanism of multi-horizontal submerged jets stiling basin, can effectively solve
The hydraulic engineering flood-discharge energy-dissipating that certainly flood discharge front porch width is limited, discharge per unit width is larger, current are concentrated and jet stream underflow speed is very high
Technical barrier.
In order to realize these purposes and further advantage according to the present utility model, there is provided a kind of multi-lever and multi-strand level is flooded
Jet stream stiling basin, including：Current by pass, stiling basin, end sill, the end jet exit of the current by pass and the front end of stiling basin
It is connected and the lower end of jet exit and the bottom plate of stiling basin is concordant, the end sill is connected with the tail end of stiling basin, and the aerial drainage leads to
The end jet exit in road along its it is horizontal and vertical be divided into multiply multilayer jet exit, top layer jet exit is submerged under water, bottom
Layer jet exit is higher than force reduction pool bottom, the neighbouring interlaced arrangement of layer jet exit, and the jet stream of alternating floor goes out between the upper and lower
Mouth is in same perpendicular.
Preferably, part flow arrangement is further fixedly arranged on the force reduction pool bottom, it includes more vertical cylinders, institute
State cylinder equal uniform intervals along the length direction and width of stiling basin and multiple rows of multiple row and the cylinder of adjacent row or row are set
Interlaced arrangement.
Preferably, the cylinder is recessed inwardly to form four cambered surfaces for four sides of quadrangular and quadrangular, adjacent
Prismatic between cambered surface is into the semicircle of evagination, and one pair of which semicircle is arranged to consistent with water (flow) direction, and another pair is semicircle
It is located relatively at both sides.
Preferably, the stiling basin gradually widens setting from front end to tail end, and the bottom plate of the stiling basin is in isosceles ladder
Shape.
Preferably, the tail end-side of the stiling basin tilts upward extension towards end sill, forms the extended surface of arc.
Preferably, depression forms falling-sill pool to the bottom plate of the stiling basin downwards, and the falling-sill pool is located at the stiling basin
Middle part and falling-sill pool base areas be force reduction pool bottom area half.
The utility model includes at least following beneficial effect：
1st, the mechanism of multi-horizontal submerged jets Energy Dissipation Modes of the utility model have the excellent of flip trajectory bucket and energy dissipation by hydraulic jump concurrently
Point：Jet stream clicks and enters pond more, and the surrounding per one jet stream forms a relatively stable ternary turbulent fluctuation whirlpool rolling, and energy dissipating is more abundant；
Mainstream disperses and has the turbulent fluctuation transition region of small scale between mainstream and force reduction pool bottom and side wall, avoid force reduction pool bottom occur compared with
Large impact pressure and larger underflow speed；Fogging degree is low, fluid stable is good etc..
2nd, the part flow arrangement of the utility model can realize shunting function, while column side face is arranged to the arcwall face of indent,
Rib is arranged to semicircle, can further more sufficient energy dissipating, while two arcwall faces of cylinder rear end can go back to its rear end
The water of stream carries out further energy dissipating, can aggravate the turbulent fluctuation of current.
3rd, the falling-sill pool of the utility model can realize further energy dissipating, simultaneously because current have first passed through disappearing for multi-lever and multi-strand
Can, falling-sill pool is entered back into, avoids current from directly impacting force reduction pool bottom, reduces the flow fluctuation in stiling basin, in energy dissipating
Safe operation and the service life of stiling basin can be ensured at the same time.
The further advantage, target and feature of the utility model embody part by following explanation, and part will also pass through
Research and practice to the utility model and be understood by the person skilled in the art.
Brief description of the drawings
Fig. 1 is the front view of prior art stiling basin；
Fig. 2 is the top view of prior art stiling basin；
Fig. 3 is the front view of the utility model stiling basin；
Fig. 4 is the top view of the utility model stiling basin；
Fig. 5 is the distribution schematic diagram of the utility model jet exit.
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings, to make those skilled in the art with reference to explanation
Book word can be implemented according to this.
It should be noted that in the description of the utility model, term " transverse direction ", " longitudinal direction ", " on ", " under ", " preceding ",
The orientation or position relationship of the instruction such as " rear ", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " be based on
Orientation shown in the drawings or position relationship, are for only for ease of description the utility model and simplify and describe, and are not instruction or dark
Show that the device of meaning or element there must be specific orientation, with specific azimuth configuration and operation, thus it is it is not intended that right
The limitation of the utility model.
As shown in Fig. 1 to 5, the utility model provides a kind of mechanism of multi-horizontal submerged jets stiling basin, including：Aerial drainage leads to
Road 1, stiling basin 2, end sill 3, the end jet exit 4 of the current by pass 1 is connected with the front end of stiling basin 2 and jet exit 4
Lower end it is concordant with the bottom plate of stiling basin 2, the end sill 3 is connected with the tail end of stiling basin 2, and the end of the current by pass 1 is penetrated
Flow export 4 along its it is horizontal and vertical be divided into multiply multilayer jet exit 4, top layer jet exit 4 is submerged under water, and bottom jet stream goes out
Mouthfuls 4 are higher than 2 bottom plate of stiling basin, neighbouring 4 interlaced arrangement of layer jet exit, between the upper and lower the jet exit of alternating floor 4
In in same perpendicular.
In the above-mentioned technical solutions, current by pass 1 transversely and is divided longitudinally into multiply multilayer jet exit 4, top layer is penetrated
Flow export 4 is submerged under water, and bottom jet exit 4 has certain height difference, neighbouring layer jet exit 4 with 2 bottom plate of stiling basin
It is staggeredly arranged.The arrangement of multilayer jet exit 4 can increase flood discharge front porch width, reduce discharge per unit width；Multiple submerged jets condition
Under, there are the rolling of upper return whirlpool and lower, transverse whirlpool around per share jet stream to roll, and free property and interval are also produced between two strands of jet streams
Property not through vertical-axis eddy, the surrounding per one jet stream forms a relatively stable ternary turbulent fluctuation whirlpool rolling, by strong
The three-dimensional turbulent fluctuations such as shearing, whirlpool rolling, blending carry out energy dissipating；Each hole jet stream eliminates the same of energy with water body shearing blending in stiling basin 2
When, it water body can fully spread around, there is higher energy dissipating efficiency and fluid stable.
In another technical solution, part flow arrangement 5 is further fixedly arranged on 2 bottom plate of stiling basin, it includes more
Vertical cylinder, the cylinder equal uniform intervals along the length direction and width of stiling basin 2 set multiple rows of multiple row and phase
Neighbour row or the cylinder interlaced arrangement of row.More cylinders uniform intervals in stiling basin 2 are staggered, and shunting work is carried out to water jets
With further energy dissipating.
In another technical solution, the cylinder is recessed inwardly to form four for four sides of quadrangular and quadrangular
Cambered surface, for the prismatic between adjacent cambered surface into the semicircle of evagination, one pair of which semicircle is arranged to consistent with water (flow) direction, another
Both sides are located relatively to semicircle.Four sides of cylinder are inwardly formed identical arcwall face, and four ribs are respectively formed evagination
Semicircular arc, the direction where a pair of of rib is consistent with water (flow) direction, and the direction where another pair rib is vertical with water (flow) direction, i.e.,
Adjacent pair cambered surface is located relatively at the both sides of water (flow) direction, and current smoothly arrive its two adjacent arcwall face along semicircular arc,
At arcwall face occur shunting at the same time arcwall face current are carried out to choose stream so that current herein further by strong shearing,
The three-dimensional turbulent fluctuation such as whirlpool rolling, blending carries out energy dissipating, and in addition the two of rear end arcwall face, can be one when turbulent fluctuation occurs for the current of rear end
Determine to play the role of choosing stream in degree.
In another technical solution, the stiling basin 2 gradually widens setting from front end to tail end, the stiling basin 2
Bottom plate is in isosceles trapezoid.Stiling basin 2 is arranged to the wide form of flaring, it is possible to increase the volume of stiling basin 2, improves the receiving energy of current
Power, on the other hand can also avoid strong impact of the strong current to 2 side wall of stiling basin, protect stiling basin 2.
In another technical solution, the tail end-side of the stiling basin 2 tilts upward extension towards end sill 3, forms arc
Extended surface.Extended surface is arcuate structure, and current can further choose stream along extension cambered surface, improve effect of energy dissipation.
In another technical solution, depression forms falling-sill pool to the bottom plate of the stiling basin 2 downwards, and the falling-sill pool is located at
The middle part of the stiling basin 2 and the half that falling-sill pool base areas is 2 base areas of stiling basin.Falling-sill pool is arranged on stiling basin 2
Bottom plate below, further increase the volume of stiling basin 2, while current can carry out certain fall from stiling basin 2 into falling-sill pool
Fall energy dissipating, further improve energy dissipating efficiency, while the length of 3 rear end protection-apron of end sill can be reduced.
Mechanism of multi-horizontal submerged jets Energy Dissipation Modes have the advantages of flip trajectory bucket and energy dissipation by hydraulic jump concurrently：Jet stream is clicked and entered more
Pond, the surrounding per one jet stream form a relatively stable ternary turbulent fluctuation whirlpool rolling, and energy dissipating is more abundant；Mainstream is disperseed and mainstream
Have the turbulent fluctuation transition region of small scale between force reduction pool bottom and side wall, avoid force reduction pool bottom occur greater impact pressure and compared with
Big underflow speed；Fogging degree is low, fluid stable is good etc..Can effectively solve the problem that flood discharge front porch width is limited, discharge per unit width compared with
Greatly, the hydraulic engineering flood-discharge energy-dissipating technical barrier that current are concentrated and jet stream underflow speed is very high.
According to the energy dissipating principle of stiling basin, stiling basin need to carry out good Dam Configuration Design.Neighbouring layer and with layer hole
Spacing is too small, and each hole goes out fluid capacitance and is easily attached together, and influences energy dissipating efficiency；Pitch of holes is excessive, or downstream water depth is excessive causes to flood
Do not spend greatly, can all reduce unit of water body energy dissipation rate, increase the unnecessary quantities of stiling basin；Its shape parameter passes through physics mould
Type is tested to determine.
Although the embodiment of the utility model is disclosed as above, it is not restricted in specification and embodiment
Listed utilization, it can be applied to the field of various suitable the utility model completely, for those skilled in the art,
Other modification is easily achieved, therefore under the universal limited without departing substantially from claim and equivalency range, this reality
Specific details is not limited to new and shown here as the legend with description.
Claims (6)
- A kind of 1. mechanism of multi-horizontal submerged jets stiling basin, it is characterised in that including：Current by pass, stiling basin, end sill, institute The end jet exit for stating current by pass is connected and the lower end of jet exit is concordant with the bottom plate of stiling basin with the front end of stiling basin, The end sill is connected with the tail end of stiling basin, and horizontal and vertical to be divided into multiply more along its for the end jet exit of the current by pass Layer jet exit, top layer jet exit are submerged under water, and bottom jet exit is higher than force reduction pool bottom, and neighbouring layer jet stream goes out Mouthful interlaced arrangement, between the upper and lower the jet exit of alternating floor be located in same perpendicular.
- 2. mechanism of multi-horizontal submerged jets stiling basin as claimed in claim 1, it is characterised in that on the force reduction pool bottom Part flow arrangement is further fixedly arranged on, it includes more vertical cylinders, and the cylinder is along the length direction of stiling basin and width side Uniform intervals set multiple rows of multiple row and the cylinder interlaced arrangement of adjacent row or row upwards.
- 3. mechanism of multi-horizontal submerged jets stiling basin as claimed in claim 2, it is characterised in that the cylinder is quadrangular And four sides of quadrangular are recessed inwardly to form four cambered surfaces, the prismatic between adjacent cambered surface into evagination semicircle, wherein A pair of of semicircle is arranged to consistent with water (flow) direction, and another pair semicircle is located relatively at both sides.
- 4. mechanism of multi-horizontal submerged jets stiling basin as claimed in claim 1, it is characterised in that the stiling basin is from front end Setting is gradually widened to tail end, the bottom plate of the stiling basin is in isosceles trapezoid.
- 5. mechanism of multi-horizontal submerged jets stiling basin as claimed in claim 4, it is characterised in that the tail end of the stiling basin Side tilts upward extension to end sill, forms the extended surface of arc.
- 6. mechanism of multi-horizontal submerged jets stiling basin as claimed in claim 4, it is characterised in that the bottom plate of the stiling basin Depression forms falling-sill pool downwards, and the falling-sill pool is located at the middle part of the stiling basin and falling-sill pool base areas is force reduction pool bottom The half of area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721332909.2U CN207295659U (en) | 2017-10-16 | 2017-10-16 | Mechanism of multi-horizontal submerged jets stiling basin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721332909.2U CN207295659U (en) | 2017-10-16 | 2017-10-16 | Mechanism of multi-horizontal submerged jets stiling basin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207295659U true CN207295659U (en) | 2018-05-01 |
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ID=62414462
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721332909.2U Expired - Fee Related CN207295659U (en) | 2017-10-16 | 2017-10-16 | Mechanism of multi-horizontal submerged jets stiling basin |
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| Country | Link |
|---|---|
| CN (1) | CN207295659U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112663555A (en) * | 2021-01-12 | 2021-04-16 | 扬州大学 | Combined rectifying device and rectifying method for front pool with large diffusion angle |
-
2017
- 2017-10-16 CN CN201721332909.2U patent/CN207295659U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112663555A (en) * | 2021-01-12 | 2021-04-16 | 扬州大学 | Combined rectifying device and rectifying method for front pool with large diffusion angle |
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| 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: 20180501 Termination date: 20181016 |