CN201635060U - High-waterhead flow energy dissipation device - Google Patents

High-waterhead flow energy dissipation device Download PDF

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Publication number
CN201635060U
CN201635060U CN2009202631578U CN200920263157U CN201635060U CN 201635060 U CN201635060 U CN 201635060U CN 2009202631578 U CN2009202631578 U CN 2009202631578U CN 200920263157 U CN200920263157 U CN 200920263157U CN 201635060 U CN201635060 U CN 201635060U
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China
Prior art keywords
energy
energy dissipation
energy dissipating
bank
flow
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Expired - Fee Related
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CN2009202631578U
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Chinese (zh)
Inventor
廖泽球
徐锡荣
刘明
李维文
王晓村
马兆荣
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China Energy Engineering Group Guangdong Electric Power Design Institute Co Ltd
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Guangdong Electric Power Design Institute
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Abstract

The utility model discloses a high-waterhead flow energy dissipation device arranged on a mountain slope with a side slope step. The high-waterhead flow energy dissipation device comprises an energy dissipation water tank, a permeable vertical wall and an energy dissipation bank, wherein the permeable vertical wall and the energy dissipation bank are sequentially positioned in the energy dissipation water tank at the side slope step, and the permeable vertical wall is perpendicular to a flow direction and is positioned at the upstream side of the energy dissipation bank. The high-waterhead flow energy dissipation device has the advantages of compact structure set, reasonable layout, full utilization of the terrain set of the side slope step, less downstream land occupation and good energy dissipation effect.

Description

A kind of high water head current energy dissipator
Technical field
The utility model relates to a kind of energy-dissipating installation that drains off floodwaters, and especially relates to high water head current energy dissipator.
Background technology
The high water head current fall from the higher position, and streaming potential will be converted into kinetic energy, because current are in dropping process, height of drop is big more, and flow rate of water flow is big more, and the energy that the Unit Weight water body is had is also increasing.Therefore; for the high water head current if adopt the bad energy dissipator of effect of energy dissipation; high-velocity flow not only can produce bigger erosion damage ability to the downstream building; but also because the earial drainage process is accompanied by problems such as producing cavitation, cavitation corrosion and atomizing, the safety that usually can threaten earial drainage building and downstream perimeter building.
Following dual mode is usually adopted in the energy dissipating of high water head current: 1, with most of flood discharge concentration of energy to the downstream, in the downstream by excavation or build tail bank etc. and make up absorption basin or cushion pool, with the underflow energy dissipation by hydraulic jump mode flood energy that dissipates, be characterized in that with water and water mutual effect be the main dissipation of finishing energy, water smoke flies away bigger, being generally used in the downstream has enough broad river surface or public land, neighbouring not building or human settlements, the situation that the water smoke that allows hydraulic jump to form flies away; 2, by increasing roughness in runner (comprising overflow body, abrupt slope, chute section etc.) section bottom, increase that laterally revolving of current rolled, aeration and violent turbulent fluctuation, part flood discharge energy is eliminated at runner midway, and dump energy is responsible for energy dissipating by the absorption basin or the cushion pool in downstream; Be characterized in: utilize the interaction of water and water, water and solid boundaries, water and air to come energy dissipating, be applicable to that generally head is not high, flow is little, the situation that the runner gradient is not steep.
Consult Fig. 1, structural representation for common a kind of disspation through hydraudic jimp device, the toe place of the flood spillway 2 on massif 1 is provided with the absorption basin 3 of the certain size and the depth of water, flood flows into absorption basin 3 bottoms by flood spillway 2, the bottom water body collision friction generation hydraulic jump of flood concentration of energy in absorption basin 3 and in the absorption basin 3 carried out energy dissipating.In this energy dissipator, special shaped form flood spillway 2 need be set on the massif side slope, absorption basin 3 will possess the enough sizes and the depth of water simultaneously, and construction investment is bigger, and area occupied is wide, and particularly absorption basin 3 must keep the enough depth of water, has relatively high expectations.Consult Fig. 2, be a kind of structural representation of jumping the stream energy dissipator, wherein the 2 toe places of the flood spillway on massif 1 are provided with and choose bank 4, choose the bank 4 outer river courses that are provided with certain width, flood is let out for 2 times by flood spillway, jumps inflow in the air by choosing bank 4, falls into then in the water body in river course, flood aloft rubs with air, rock with water body even bottom, river course in the river course bumps, and carries out energy dissipating, in this energy dissipator, flood spillway on the massif side slope need be shaped form equally, construction investment is big, and in addition, will there be the certain width and the degree of depth in the river course, the occupied ground area is big, is not suitable for the limited occasion of flood spillway bottom space.Consult Fig. 3, structural representation for another kind of submerged bucket dissipator device, wherein the toe place of flood spillway 2 is provided with and chooses bank 4 on the massif 1, choose the bank 4 outer absorption basins 3 that are provided with certain size and degree of depth, flood is let out by under the flood spillway, to let out high-velocity flow down and guide absorption basin 3 water surface into by choosing bank 4, the concentration of energy of flood in absorption basin 3 with absorption basin 3 top water body collision friction generation hydraulic jumps, carry out energy dissipating.The same existence of this mode must be provided with the flood spillway of shaped form, and absorption basin occupation of land size is bigger, defectives such as engine request height.
Therefore, for high water head, current energy dissipating that flow is bigger, and in power engineering, toe plant area ground does not have enough construction to disappear under the situation in power (energy) place, pond, and above-mentioned current energy dissipating mode commonly used all can not be suitable for.
Summary of the invention
The purpose of this utility model provide a kind of occupied ground less, can utilize the setting of existing side slope step, fully to the high water head current energy dissipator of water conservancy energy dissipating.
Technical solution of the present utility model is: a kind of high water head current energy dissipator, be arranged on the hillside with side slope step, it is made up of energy dissipating tank, saturating empty stalk and energy dissipating bank, wherein saturating empty stalk and energy dissipating bank are positioned at the energy dissipating tank at described side slope step place in turn, and saturating empty stalk is positioned at the upstream side of energy dissipating bank perpendicular to water (flow) direction.
Saturating empty stalk is vertical body of wall, its bottom is unsettled, the stream that can supply water passes through, top can dash and confinement of flow, the energy dissipating bank is dash and confinement of flow further, therefore, and when flood falls when entering the side slope step from eminence, because stopping of saturating empty stalk, the current water level that causes empty stalk upstream side is stopped up height, and the fierce collision of formation is revolved and rolled, and makes water flow dynamic energy obtain part and dissipates, realize primary energy dissipating, in addition, the current that pass through from saturating vacancy, saturating empty stalk bottom enter energy dissipating Kan Chu, and are stopped by the energy dissipating bank, cause that current form again fierce collision and revolve and roll between saturating empty stalk and energy dissipating bank, the kinetic energy of current is further dissipated, realize secondary energy dissipating, after twice energy dissipating, water flow dynamic energy dissipates substantially, by the smooth-going downstream that flows to of energy dissipating bank upper surface, realize effective energy dissipating, can make full use of the setting of existing side slope step, occupied ground is little, and effect of energy dissipation is good.
Extend towards described empty stalk direction on the top of described energy dissipating bank, further guide current into empty stalk after, the collision of current is revolved and is rolled fiercely more, improves the effect of energy dissipating.
The vertical cross-section of described energy dissipating bank is curved, and confinement of flow improves effect of energy dissipation, guiding current break-in that can be smooth-going effectively.
The utility model has the advantages that: structure is provided with compactness, and is rationally distributed, utilized the landform setting of side slope step fully, and the downstream occupied ground is few, and effect of energy dissipation is good.
Description of drawings
Accompanying drawing 1 is the structural representation of disspation through hydraudic jimp device in the prior art;
Accompanying drawing 2 is the structural representation of jumping the stream energy dissipator in the prior art;
Accompanying drawing 3 is the structural representation of submerged bucket dissipator device in the prior art;
Accompanying drawing 4 is the structural representation of the utility model embodiment;
Accompanying drawing 5 is the structural representation at side slope step place among the utility model embodiment;
Accompanying drawing 6 be among Fig. 5 A-A to sectional view;
Accompanying drawing 7 be among Fig. 5 B-B to sectional view;
1, massif, 2, flood spillway, 3, absorption basin, 4, choose bank, 5, the side slope step, 6, the energy dissipating tank, 7, saturating empty stalk, 8, the energy dissipating bank.
The specific embodiment
Embodiment:
Consult Fig. 4-7, a kind of high water head current energy dissipator, be arranged on the hillside with three side slope steps 5, it is made up of energy dissipating tank 6, saturating empty stalk 7 and energy dissipating bank 8, a saturating empty stalk 7 and energy dissipating bank 8 wherein are set respectively in the energy dissipating tank 6 at each side slope step 5 place, constitute one group of secondary energy-dissipating structure.Wherein saturating empty stalk 7 is positioned at the upstream side of energy dissipating bank 8 perpendicular to the direction of current, and the vertical cross-section of energy dissipating bank 8 is curved, and extend towards saturating empty stalk 7 directions on its top.
Consult Fig. 6 and 7, saturating empty stalk 7 is vertical body of wall, its bottom is unsettled, the stream that can supply water passes through, top can dash and confinement of flow, energy dissipating bank 8 is arranged on the downstream of empty stalk 7, further dash and confinement of flow, when flood falls when entering side slope step 5 from eminence, because stopping of saturating empty stalk 7 causes that the current water level of empty stalk 7 upstream sides is stopped up high, the fierce collision of formation is revolved and is rolled, make water flow dynamic energy obtain part and dissipate, realize primary energy dissipating, in addition, the current that pass through from saturating vacancy, saturating empty stalk 7 bottoms enter energy dissipating Kan8Chu, and stopped by the energy dissipating bank, cause that current flow to empty stalk 7 sides along the energy dissipating bank 8 of arc, between saturating empty stalk and energy dissipating bank, form fierce again collision and revolve and roll, the kinetic energy of current is further dissipated, realize secondary energy dissipating, after twice energy dissipating, water flow dynamic energy dissipates substantially.
In the present embodiment, energy dissipating tank 6 wide 10m, high 1.45m, side slope step 5 wide 3m, saturating empty stalk 7 wall thickness 0.3m, high 1.8m, the saturating outage 0.5m in bottom, energy dissipating bank 8 wall thickness 0.3m, high 1.5m, the wide 1.75m of level.Head fall 62.4m, classification height 12m, the design maximum flow 84.4m3/s that drains off floodwaters.Adopt traditional energy dissipating scheme, the absorption basin of 15*40m need be set at the toe place, it is more to take plant area ground, adopts the mode of present embodiment, takies ground, toe place only for about 1/4 of conventional absorption basin, has good economic benefit.
Above-listed detailed description is specifying at one of the utility model possible embodiments, this embodiment is not in order to limit claim of the present utility model, allly do not break away from the equivalence that the utility model does and implement or change, all should be contained in the claim of this case.

Claims (3)

1. high water head current energy dissipator, be arranged on the hillside with side slope step, it is characterized in that: it is made up of energy dissipating tank, saturating empty stalk and energy dissipating bank, wherein saturating empty stalk and energy dissipating bank are positioned at the energy dissipating tank at described side slope step place in turn, and saturating empty stalk is positioned at the upstream side of energy dissipating bank perpendicular to water (flow) direction.
2. a kind of high water head current energy dissipator according to claim 1 is characterized in that: extend towards described empty stalk direction on the top of described energy dissipating bank.
3. a kind of high water head current energy dissipator according to claim 1 and 2, it is characterized in that: the vertical cross-section of described energy dissipating bank is curved.
CN2009202631578U 2009-11-23 2009-11-23 High-waterhead flow energy dissipation device Expired - Fee Related CN201635060U (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103243685A (en) * 2013-05-16 2013-08-14 黄河勘测规划设计有限公司 Overflow dam building structure suitable for ecological water landscape
CN103898882A (en) * 2014-04-21 2014-07-02 四川大学 Classified pool-inlet high-dam flood discharge energy dissipater for bottom flow and energy dissipating method
CN103898881A (en) * 2014-04-17 2014-07-02 四川大学 Graded flow configuration energy dissipation method for deflecting water streams
CN104294801A (en) * 2014-09-11 2015-01-21 四川大学 Suspension drop flow type plunge pool energy dissipation system
CN104695390A (en) * 2015-01-30 2015-06-10 中国水利水电科学研究院 Integrated super-discharge energy-dissipation flood-overflowing unit and method
CN106702978A (en) * 2017-01-24 2017-05-24 河海大学 Low-overflow dam equal-water head step-by-step energy dissipation structure
CN113237631A (en) * 2021-05-08 2021-08-10 中国水利水电科学研究院 Urban accumulated water monitoring oscillation eliminating structure based on underflow energy dissipation and energy dissipation method thereof

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103243685A (en) * 2013-05-16 2013-08-14 黄河勘测规划设计有限公司 Overflow dam building structure suitable for ecological water landscape
CN103898881A (en) * 2014-04-17 2014-07-02 四川大学 Graded flow configuration energy dissipation method for deflecting water streams
CN103898882A (en) * 2014-04-21 2014-07-02 四川大学 Classified pool-inlet high-dam flood discharge energy dissipater for bottom flow and energy dissipating method
CN104294801A (en) * 2014-09-11 2015-01-21 四川大学 Suspension drop flow type plunge pool energy dissipation system
CN104695390A (en) * 2015-01-30 2015-06-10 中国水利水电科学研究院 Integrated super-discharge energy-dissipation flood-overflowing unit and method
CN104695390B (en) * 2015-01-30 2016-03-16 中国水利水电科学研究院 A kind of combined type is super to be let out energy dissipating and to overflow big vast unit and method
CN106702978A (en) * 2017-01-24 2017-05-24 河海大学 Low-overflow dam equal-water head step-by-step energy dissipation structure
CN113237631A (en) * 2021-05-08 2021-08-10 中国水利水电科学研究院 Urban accumulated water monitoring oscillation eliminating structure based on underflow energy dissipation and energy dissipation method thereof
CN113237631B (en) * 2021-05-08 2021-12-21 中国水利水电科学研究院 Urban accumulated water monitoring oscillation eliminating structure based on underflow energy dissipation and energy dissipation method thereof

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Owner name: CHINA ENERGY ENGINEERING GROUP GUANGDONG ELECTRIC

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Address before: 510600 No. 846 Dongfeng East Road, Guangzhou, Guangdong, Yuexiu District

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Owner name: CHINA ENERGY ENGINEERING GROUP GUANGDONG ELECTRIC

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Address after: 510663 Luogang District, Guangdong, Guangzhou Science City Fung Road, No. 1, No.

Patentee after: Company limited of China Energy Engineering Group Guangdong Electric Power Design Institute

Address before: 510663 Luogang District, Guangdong, Guangzhou Science City Fung Road, No. 1, No.

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Granted publication date: 20101117

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CF01 Termination of patent right due to non-payment of annual fee