CN207130700U - Energy dissipater is concentrated in the underwater undercurrent collision of bilateral - Google Patents
Energy dissipater is concentrated in the underwater undercurrent collision of bilateral Download PDFInfo
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- CN207130700U CN207130700U CN201721078745.5U CN201721078745U CN207130700U CN 207130700 U CN207130700 U CN 207130700U CN 201721078745 U CN201721078745 U CN 201721078745U CN 207130700 U CN207130700 U CN 207130700U
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Abstract
Water conservancy and hydropower industry is the utility model is related to, it is especially a kind of effectively to reduce transverse flow speed component, overflow is reduced to bank slope lateral impact forces, energy dissipater is concentrated in the underwater undercurrent collision of bilateral for improving channel revetment safety guarantee.Including downstream river course, the downstream river course side is at least provided with a bank discharge construction, at least one bank discharge construction outlet is provided with the bank discharge construction, overflow from the outlet of bank discharge construction realizes energy dissipating in downstream river course, and the intersection point between the overflow outer rim of each of which overflow and downstream river course bottom is located at this side of Talweg.The utility model cleverly make use of the energy and structure distribution of current itself, so as to protect facility well while energy dissipating is ensured, be particularly suitable for use among various flood discharging tunnel energy dissipaters.
Description
Technical field
Water conservancy and hydropower industry is the utility model is related to, energy dissipater is concentrated in especially a kind of underwater undercurrent collision of bilateral.
Background technology
As country is to the demand of water power clean energy resource, build substantial amounts of high dam, utilized head is generated electricity, flood season due to
It is big to carry out flow, part water body needs to lead off to downstream by flood releasing structure.At present flood releasing structure mainly by flood relief through dam and
Bank flood releasing structure composition, the outlet of bank flood releasing structure are located at dam downstream, and general use chooses stream mode and is released to downstream
In river course, flood releasing structure outlet can be disposed at unilateral or two sides.
The flood discharge outlet of one side is arranged in, causes downstream river course punching hole too deep to avoid overflow from concentrating, generally cloth successively
Put, trajectory nappe separately falls into downstream river course successively.Overflow is too short, easily dry to pound this bank；Overflow is long, easily washes away opposite bank, equal band
Carry out the increase of two sides protection works amount.If release floodwatering facility is more, the scope that flood releasing structure outlet arrangement occupies is too big, flood discharge
The increase of facility its length, flood releasing structure itself quantities increase, and due to length increase, high-velocity flow cavitation corrosion cavitation risk
Increase；Because outlet arrangement scope increases, corresponding overflow falling zone increases, and the downstream river course scope and quantities that need to be protected also increase
Add larger.
If being arranged in two sides, concentration is washed away to avoid flood discharge from exporting trajectory nappe, at present most of flood releasing structure outlets
Using two sides interlaced arrangement pattern, drop point staggeredly separates after overflow enters river, mutually using turbulent energy dissipating, underuses overflow horizontal stroke
Mutual energy dissipating is carried out to current, energy dissipation rate is relatively low, and current are disorderly, and downstream returns groove to have some setbacks；It is corresponding to bring energy dissipating area to protect intensity
With scope increase, increase investment and risk safe for operation.
Therefore, current structure design not yet makes full use of the trajectory nappe of both sides to carry out mutual collision friction energy dissipating.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of effectively reduction transverse flow speed component, reduces overflow pair
To bank slope lateral impact forces, energy dissipater is concentrated in the underwater undercurrent collision of bilateral for improving channel revetment safety guarantee.
Technical scheme is used by the utility model solves its technical problem：Energy dissipating is concentrated in the underwater undercurrent collision of bilateral
Work, including downstream river course, the downstream river course side is at least provided with a bank discharge construction, on the bank discharge construction
At least one bank discharge construction outlet is provided with, the overflow from the outlet of bank discharge construction is realized in downstream river course to disappear
Can, the intersection point between the overflow outer rim of each of which overflow and downstream river course bottom is located at this side of Talweg.
It is further that the bank discharge construction is correspondingly arranged in downstream river course both sides in pairs, bank discharge construction
The overflow of corresponding bank discharge construction exit outflow realizes energy dissipating in downstream river course.
It is further, on each bank discharge construction between the central axis of adjacent two banks discharge construction outlet
Away from outlet axes spacing (B1) is defined as, the overflow horizontal proliferation Breadth Maximum of the overflow of corresponding bank discharge construction outlet is determined
Justice is overflow horizontal proliferation Breadth Maximum (B2), wherein, B1 ＞ B2.
It is further that the incident angle of side bank discharge construction outlet is defined as the first incidence angle, opposite side
The incident angle of bank discharge construction outlet is defined as the second incidence angle, and first incidence angle is equal with the second incidence angle.
It is further that the overflow inner edge of the overflow is intersected with the downstream river course water surface.
The beneficial effects of the utility model are：The utility model cleverly devises the incident form of overflow, so as to improve
The quality of energy dissipating.Concretely, when flood discharge exports unilateral open, trajectory nappe falling zone is located at this side of stream central line, water cushion
Deep, energy dissipation rate is high；When flood discharge exports double-side opening, trajectory nappe falling zone is located at this side of respective stream central line, and water cushion is deep, and water
Lower horizontal undercurrent part collides in stream central line, and when double side acting power is close, horizontal force basic neutralisation is zero.This reality
With the new energy and structure distribution that cleverly make use of current itself, set so as to be protected well while energy dissipating is ensured
Apply, be particularly suitable for use among various flood discharging tunnel energy dissipaters.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model bilateral arrangement.
Fig. 2 is the structural representation of the utility model bilateral arrangement.
Fig. 3 is Fig. 2 M-M sectional views.
Fig. 4 is the structural representation of the utility model single-sided arrangement.
Fig. 5 is Fig. 4 N-N sectional views.
In figure mark for：Talweg 1, downstream river course 11, bank discharge construction 2, dash dam 3, water (flow) direction 4,
Form line 6, overflow inner edge 7, overflow outer rim 8, outlet axes spacing (B1), overflow horizontal proliferation Breadth Maximum (B2), first enter
Firing angle α, the second incident angle β, bank discharge construction outlet (a, b, c, d, e, f, g, h), overflow (A, B, C, D, E, F, G, H), water
The overboard maximum length L of tongue, flood discharge outlet overflow choose stream main body inner edge to water surface length L1, flood discharge be exported to flowage line distance L2,
Flood discharge is exported to Talweg distance L3, downstream river course zone of protection is L4, middle channel protection region L5, the both sides overflow water surface
Upper distance is L6.
Embodiment
The utility model is further illustrated below in conjunction with the accompanying drawings.
Energy dissipater, including downstream river course 11, the downstream are concentrated in the underwater undercurrent collision of bilateral as shown in Figure 1, Figure 2, Figure 3 shows
The side of river course 11 is provided with least one bank at least provided with a bank discharge construction 2, on the bank discharge construction 2 and let out
Water building outlet (a), the overflow (A) from bank discharge construction outlet (a) realize energy dissipating, each of which in downstream river course 11
Intersection point between the overflow outer rim 8 of bar overflow (A) and the bottom of downstream river course 11 is located at this side of Talweg 1.
In the field where the utility model, " energy dissipater " refers to：Eliminate and let out urgency under outlet structure escape works or drop structure
The unnecessary kinetic energy of stream, prevent or mitigate current to hydraulic structure and downstream the erosion damage of rivers and canals etc. and the engineering built is set
Apply；Stream central line：Along the line of each cross section Peak Flow Rate point of water (flow) direction in river.Traditional structure is such：In both sides
Flood releasing structure outlet is arranged, and trajectory nappe is due to more than Talweg, when one side is run, the punching pair of trajectory nappe top
Bank, shock component is big, causes channel protection quantities to increase and risk safe for operation；When bilateral is run, trajectory nappe is in river
Midair collision above road stream central line, atomization is caused to aggravate, the heavy showers that atomization zone comes influences surrounding building safety.Therefore, originally
Utility model looks for another way, and starts with from the positional structure of overflow and Talweg 1, allows trajectory nappe to be located at Talweg 1
This bank side, itself it is a technical advantage that：When flood discharge exports unilateral open, as shown in Figure 4 and Figure 5, the overboard position of trajectory nappe
In stream central line, water cushion is deep, and energy dissipation rate is high；When flood discharge exports double-side opening, as shown in Figure 1 to Figure 3, the overboard position of trajectory nappe
In this side of respective stream central line, water cushion is deep, and underwater horizontal undercurrent part collides in stream central line, when double side acting power approaches
When, horizontal force basic neutralisation is zero.
Concretely, when the bank discharge construction 2 is correspondingly arranged in 11 both sides of downstream river course in pairs, bank sluices and built
The overflow (A, F) for building 2 corresponding bank discharge construction outlet (a, f) place outflow realizes energy dissipating in downstream river course (11).Such as
Shown in Fig. 1 to Fig. 3, bank discharge construction outlet (a, f), bank discharge construction outlet (b, g), the outlet of bank discharge construction
(c, h) in correspondence with each other, realizes mutual energy dissipating.
In order to avoid intersection and overlapping phenomenon occurs in overflow, as shown in Figure 1 and Figure 4, such scheme can be selected：Often
The spacing of the central axis of adjacent two banks discharge construction outlet is defined as outlet axes spacing on individual bank discharge construction 2
(B1), the overflow horizontal proliferation Breadth Maximum of the overflow of corresponding bank discharge construction outlet is defined as overflow horizontal proliferation maximum
Width (B2), wherein, B1 ＞ B2.
In the case of both sides are arranged, in order that both sides overflow is intersecting in Talweg 1, Yokogawa approaches to component, reaches
When being opened to both sides simultaneously, lateral current collides the purpose of energy dissipating, can select such scheme：The side bank sluices and built
The incident angle for building outlet (a) is defined as the first incidence angle (α), and the incident angle of opposite side bank discharge construction outlet (f) is determined
Justice is the second incidence angle (β), and first incidence angle (α) is equal with the second incidence angle (β).In actual design, can try one's best
Allow overflow overboard maximum length L and overflow horizontal proliferation Breadth Maximum B2 are bigger, and the overflow volume that such unit water surface is born is use up
Measure small, reduction impulsive force.
Avoid overflow is dry from pounding this bank to place, as shown in figure 3, the overflow inner edge 7 of the overflow can be selected to allow with
The trip water surface of river course 11 intersects, as shown in figure 3, allowing flood discharge outlet overflow to choose stream main body inner edge to water surface length L1 >=flood discharge outlet
To flowage line distance L2, so as to fall in the water surface under making overflow directly complete, rather than this bank is dropped to.
In actual use, this structure is as far as possible symmetrical to open operation, i.e., opens both sides simultaneously, concretely, exactly open
During even number flood releasing structure, bank discharge construction outlet (a) is opened as far as possible and bank discharge construction outlet (f), bank sluice and built
Build outlet (b) and bank discharge construction outlet (g), bank discharge construction outlet (c) and bank discharge construction outlet (h).
The utility model cleverly devises the incident form of overflow, so as to improve the quality of energy dissipating.Concretely, when
When flood discharge outlet one side is opened, trajectory nappe falling zone is located at this side of stream central line, and water cushion is deep, and energy dissipation rate is high；When flood discharge outlet is double
When side is opened, trajectory nappe falling zone is located at this side of respective stream central line, and water cushion is deep, and underwater horizontal undercurrent part is sent out in stream central line
Raw collision, when double side acting power is close, horizontal force basic neutralisation is zero.The utility model cleverly make use of current certainly
The energy and structure distribution of body, so as to protect facility well while energy dissipating is ensured, be particularly suitable for use in various flood discharging tunnels
Among energy dissipater, there is very wide market promotion prospect.
Claims (5)
1. energy dissipater, including downstream river course (11) are concentrated in the underwater undercurrent collision of bilateral, it is characterised in that：The downstream river course (11)
Side is provided with least one bank and sluiced at least provided with a bank discharge construction (2) on the bank discharge construction (2)
Building outlet (a), the overflow (A) from bank discharge construction outlet (a) realize energy dissipating, each of which in downstream river course (11)
Intersection point between the overflow outer rim (8) of bar overflow (A) and downstream river course (11) bottom is located at this side of Talweg (1).
2. energy dissipater is concentrated in the underwater undercurrent collision of bilateral as claimed in claim 1, it is characterised in that：The bank discharge construction
(2) it is correspondingly arranged in downstream river course (11) both sides in pairs, the corresponding bank discharge construction outlet of bank discharge construction (2) (a,
F) overflow (A, F) of place's outflow realizes energy dissipating in downstream river course (11).
3. energy dissipater is concentrated in the underwater undercurrent collision of bilateral as claimed in claim 2, it is characterised in that：Each bank discharge construction
(2) spacing of the central axis of adjacent two banks discharge construction outlet is defined as outlet axes spacing (B1) on, corresponding
The overflow horizontal proliferation Breadth Maximum of the overflow of bank discharge construction outlet is defined as overflow horizontal proliferation Breadth Maximum (B2), its
In, B1 ＞ B2.
4. energy dissipater is concentrated in the underwater undercurrent collision of bilateral as claimed in claim 2, it is characterised in that：The side bank sluices
The incident angle of building outlet (a) is defined as the first incidence angle (α), the incident angle of opposite side bank discharge construction outlet (f)
The second incidence angle (β) is defined as, first incidence angle (α) is equal with the second incidence angle (β).
5. energy dissipater is concentrated in the underwater undercurrent collision of bilateral as claimed in claim 2, it is characterised in that：In the overflow of the overflow
Edge (7) intersects with downstream river course (11) water surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721078745.5U CN207130700U (en) | 2017-08-25 | 2017-08-25 | Energy dissipater is concentrated in the underwater undercurrent collision of bilateral |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721078745.5U CN207130700U (en) | 2017-08-25 | 2017-08-25 | Energy dissipater is concentrated in the underwater undercurrent collision of bilateral |
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| CN207130700U true CN207130700U (en) | 2018-03-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107326877A (en) * | 2017-08-25 | 2017-11-07 | 中国电建集团成都勘测设计研究院有限公司 | Energy dissipater is concentrated in bilateral undercurrent collision under water |
-
2017
- 2017-08-25 CN CN201721078745.5U patent/CN207130700U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107326877A (en) * | 2017-08-25 | 2017-11-07 | 中国电建集团成都勘测设计研究院有限公司 | Energy dissipater is concentrated in bilateral undercurrent collision under water |
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