CN102912772B - Discharge chute - Google Patents
Discharge chute Download PDFInfo
- Publication number
- CN102912772B CN102912772B CN201210477206.4A CN201210477206A CN102912772B CN 102912772 B CN102912772 B CN 102912772B CN 201210477206 A CN201210477206 A CN 201210477206A CN 102912772 B CN102912772 B CN 102912772B
- Authority
- CN
- China
- Prior art keywords
- base plate
- smooth
- hemispherical
- bottom plates
- discharge chute
- 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.)
- Active
Links
Landscapes
- Hydraulic Turbines (AREA)
- Sewage (AREA)
Abstract
The invention discloses a discharge chute which comprises a bottom plate and side walls at two sides of the bottom plate, wherein the bottom plate comprises a plurality of stepped bottom plates and a plurality of smooth bottom plates; the stepped bottom plates and the smooth bottom plates are alternately arranged; and a plurality of convex bodies are arranged on the smooth bottom plates and/or the side walls. According to the discharge chute, the convex bodies are arranged on the smooth bottom plates and/or the side walls, so that the roughness of the discharge chute is improved, the frictional resistance is increased, the turbulent energy dissipation rate is improved, a mass of water flow energy is dissipated, the risks of the cavitation erosion destroy of the discharge chute and the erosion destroy are reduced and the flood discharge safety is improved.
Description
Technical field
The present invention relates to Hydraulic and Hydro-Power Engineering outlet structure escape works and let out groove, particularly a kind of ladder becoming the high roughness of the gradient lets out groove.
Background technology
For Hydraulic and Hydro-Power Engineering outlet structure escape works, letting out groove is confinement of flow, the passage guiding current.At present, let out the base plate of groove, the smooth-going pattern of the smooth continuous print of the many employings of side wall, ideally, smooth-going groove of letting out, under the cooperation of air mixing corrosion reducing facility, has good adaptive capacity to high-velocity flow, lets out under can guiding current preferably, and reduce or remit self cavitation erosion and erosion attack, but in reality, because flow velocity is high, smooth-going groove of letting out still has and is subject to cavitation erosion and erosion attack example., discharge per unit width less at the flow rate of water flow letting out groove is little, let out groove and can adopt stair-step pattern, ladder is let out groove and can be disappeared the energy of current stopped along journey under the effect of ladder, flow rate of water flow is let out under reduction, be conducive to the linking of downstream river course current, ladder lets out groove easily by high-velocity flow erosion attack, and letting out groove flow rate of water flow needs to control within the specific limits.
Summary of the invention
Technical problem to be solved by this invention is, not enough for prior art, provides one to let out groove, reduces the risk of letting out groove self cavitation erosion and erosion attack, reduces the dissipation and scouring pressure letting out groove downstream, improves flood discharge safety.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is: one lets out groove, comprise the side wall of base plate and base plate both sides, described base plate comprises some sections of step boards and some sections of smooth-going base plates, step board and smooth-going base plate interval are arranged, described smooth-going base plate and/or side wall are provided with several prominent bodies.
Preferably, described prominent body interlaced arrangement.
Described prominent body is hemispherical or streamlined, and the height of prominent body is 0.5m ~ 2.0m.
The described step board gradient is 5 ~ 60
0.
Preferably, also comprise air mixing corrosion reducing facility, described air mixing corrosion reducing facility is connected with base plate upstream extremity.
Compared with prior art, the beneficial effect that the present invention has is: the present invention by arranging prominent body on chute bottom slab and/or side wall, improve the roughness of letting out groove, increase frictional resistance, improve disorderly kinetic energy dissipation rate, dissipate a large amount of flow energy, reduces the risk of letting out groove self cavitation erosion and erosion attack, reduce the dissipation and scouring pressure letting out groove downstream, improve flood discharge safety.
Accompanying drawing explanation
Fig. 1 is one embodiment of the invention front view;
Fig. 2 is one embodiment of the invention longitudinal sectional view;
Fig. 3 is one embodiment of the invention transverse sectional view.
Detailed description of the invention
As shown in Figure 1-Figure 3, one embodiment of the invention comprises the side wall 3 of base plate 2 and base plate both sides, described base plate 2 comprises some sections of step boards 5 and some sections of smooth-going base plates 6, and step board 5 and smooth-going base plate 6 interval are arranged, smooth-going base plate 6 and/or side wall 3 are provided with several prominent bodies 1; Prominent body 1 is hemispherical or streamlined, and the height of prominent body 1 is 0.5m ~ 2.0m, prominent body 1 interlaced arrangement; Step board 5 gradient is 5 ~ 60
0; Air mixing corrosion reducing facility 4 is connected with base plate 2 upstream extremity.
The size of prominent body 1 should be determined according to letting out groove hydraulics, and when employing hemispherical dashes forward body, the ratio of hemispherical height and end circular diameter can be controlled between 1:2 ~ 1:8; Vertical or horizontal spacing-controllable between prominent body 1 is built at the bottom of 2 ~ 8 times of hemisphericals between circular diameter, and to obtain maximum roughness value, roughness value can be controlled between 0.04 ~ 0.12; Prominent body can adopt prefabricated units, and reserved steel bar joint, lifted during construction to installation site, reserved steel bar and periphery bar connecting, then groove concrete is let out in cast.
Chute bottom slab and side wall arrange prominent body, the roughness of letting out groove can be improved, increase frictional resistance, current are under the effect of prominent body, flow to and sharply change, prominent body downstream forms the shearing energy dissipating whirlpool body of various yardstick, and the inner turbulence intensity of water body obviously increases, improve disorderly kinetic energy dissipation rate, dissipate a large amount of flow energy.Current are formed on step board shears energy dissipating whirlpool body, and can increase substantially along journey energy dissipation rate, simultaneously because base plate is fold-line-shaped, current are attached on chute bottom slab, and the water surface rises and falls, and current gradient increases, and operation length increases, and disappear more flow energy of stopping.
Claims (2)
1. let out a groove, comprise the side wall of base plate and base plate both sides, it is characterized in that, described base plate comprises some sections of step boards and some sections of smooth-going base plates, and step board and smooth-going base plate interval are arranged, described smooth-going base plate and/or side wall are provided with several prominent bodies; Described prominent body is hemispherical or streamlined, and the height of prominent body is 0.5m ~ 2.0m; Described prominent body interlaced arrangement; Described hemispherical height of dashing forward is 1:2 ~ 1:8 with the ratio of circular diameter at the bottom of hemispherical, and the hemispherical vertical or horizontal spacing of body of dashing forward is circular diameter at the bottom of hemispherical 2 ~ 8 times; The described step board gradient is 5 ~ 60
0.
2. according to claim 1ly let out groove, it is characterized in that, also comprise air mixing corrosion reducing facility, described air mixing corrosion reducing facility is connected with base plate upstream extremity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210477206.4A CN102912772B (en) | 2012-11-22 | 2012-11-22 | Discharge chute |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210477206.4A CN102912772B (en) | 2012-11-22 | 2012-11-22 | Discharge chute |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102912772A CN102912772A (en) | 2013-02-06 |
| CN102912772B true CN102912772B (en) | 2015-05-13 |
Family
ID=47611322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210477206.4A Active CN102912772B (en) | 2012-11-22 | 2012-11-22 | Discharge chute |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102912772B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103437332A (en) * | 2013-09-05 | 2013-12-11 | 中国水电顾问集团中南勘测设计研究院 | Protruding body and discharge chute for mounting protruding body |
| CN103774625B (en) * | 2014-01-22 | 2015-11-18 | 河海大学 | Tooth bank formula slit-type energy dissipation and energy dissipating method |
| CN108560477B (en) * | 2018-02-07 | 2020-07-10 | 四川大学 | Aeration facility and method using calcium carbide as gas source |
| CN114855721A (en) * | 2022-05-27 | 2022-08-05 | 中国电建集团西北勘测设计研究院有限公司 | Water intaking energy absorber |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1033627A1 (en) * | 1982-02-22 | 1983-08-07 | Туркменский научно-исследовательский институт гидротехники и мелиорации | Mud stream protecting structure |
| CN101195999A (en) * | 2007-10-30 | 2008-06-11 | 四川大学 | Ladder energy dissipater with doped gas device preposed |
| CN101349048A (en) * | 2008-09-04 | 2009-01-21 | 四川大学 | Full section ladder energy dissipater |
| CN101368380A (en) * | 2008-10-10 | 2009-02-18 | 四川大学 | Roughening and energy dissipating method for flood discharging groove |
| CN202925532U (en) * | 2012-11-22 | 2013-05-08 | 中国水电顾问集团中南勘测设计研究院 | Discharging groove |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102677640B (en) * | 2012-05-25 | 2014-11-26 | 四川大学 | Step energy dissipater comprising reverse arc surfaces |
-
2012
- 2012-11-22 CN CN201210477206.4A patent/CN102912772B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1033627A1 (en) * | 1982-02-22 | 1983-08-07 | Туркменский научно-исследовательский институт гидротехники и мелиорации | Mud stream protecting structure |
| CN101195999A (en) * | 2007-10-30 | 2008-06-11 | 四川大学 | Ladder energy dissipater with doped gas device preposed |
| CN101349048A (en) * | 2008-09-04 | 2009-01-21 | 四川大学 | Full section ladder energy dissipater |
| CN101368380A (en) * | 2008-10-10 | 2009-02-18 | 四川大学 | Roughening and energy dissipating method for flood discharging groove |
| CN202925532U (en) * | 2012-11-22 | 2013-05-08 | 中国水电顾问集团中南勘测设计研究院 | Discharging groove |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102912772A (en) | 2013-02-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101349048B (en) | Full section ladder energy dissipater | |
| CN101349047B (en) | Aeration type curve ladder energy dissipater in flood discharge hole | |
| CN102912772B (en) | Discharge chute | |
| CN202925532U (en) | Discharging groove | |
| CN202440803U (en) | Air-entraining structure for flood releasing building | |
| CN101195999A (en) | Ladder energy dissipater with doped gas device preposed | |
| CN102900053B (en) | Modified model deep-cylinder stilling well | |
| CN201254715Y (en) | Drop sill type underflow energy dissipating work structure | |
| CN102926360A (en) | Discharge chute with projections | |
| CN102733361B (en) | Narrow river valley, deep tail water induced joint flood-discharge energy-dissipating structure | |
| CN103669301B (en) | The height bank absorption basin of double-layer disperse energy dissipating | |
| CN201254714Y (en) | Suddenly enlarged and drop sill type underflow energy dissipating work structure | |
| CN202899097U (en) | Protruding body discharge chute | |
| CN103526731B (en) | Inverted v-shaped ladder energy dissipater | |
| CN102322047A (en) | Broken line inlet type hole plug energy dissipater | |
| CN109577292A (en) | A kind of energy dissipating flow passage structure reducing flow velocity | |
| CN101603306A (en) | The comprehensive sudden expansion build of high-lift lock water-delivery valve section | |
| CN102409642B (en) | Reducing and sudden expansion type inner energy dissipator | |
| CN108517842B (en) | Asymmetric aeration method suitable for curved spillway | |
| CN102704447A (en) | V-shaped step energy dissipater with transition section | |
| CN201447699U (en) | Integrated sudden expansion shape of high head ship lock water conveyance valve section | |
| CN107503330A (en) | It is weak in hole to there is pressure is prominent to fall expansion type jet stiling basin energy-dissipating system | |
| CN205000306U (en) | Flexible concrete apron structure | |
| CN207295659U (en) | Mechanism of multi-horizontal submerged jets stiling basin | |
| CN210636397U (en) | Breather pipe structure of dam flood discharge hole |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent for invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 410014 Hunan province Changsha Yuhua District, camphor Road No. 16 Applicant after: Company limited of Central-South survey and design research institute of electricity Jian group of China Address before: 410014, 9 camphor Road, Yuhua District, Hunan, Changsha Applicant before: Zhongnan Prospecting Design Inst. China Hydrauelectric Consultant Group |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: ZHONGNAN PROSPECTING DESIGN INST. CHINA HYDRAUELECTRIC CONSULTANT GROUP TO: CHINA POWER GROUP ZHONGNAN INVESTIGATION DESIGN + RESEARCH INSTITUTE CO., LTD. |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |