CN102926360A - Discharge chute with projections - Google Patents
Discharge chute with projections Download PDFInfo
- Publication number
- CN102926360A CN102926360A CN2012104773654A CN201210477365A CN102926360A CN 102926360 A CN102926360 A CN 102926360A CN 2012104773654 A CN2012104773654 A CN 2012104773654A CN 201210477365 A CN201210477365 A CN 201210477365A CN 102926360 A CN102926360 A CN 102926360A
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- Prior art keywords
- base plate
- prominent
- prominent body
- out groove
- hemispherical
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Abstract
The invention discloses a discharge chute with projections, comprising a bottom plate and side walls at the two sides of the bottom plate. The bottom plate is in the folded line or inclined straight line shape, and the bottom plate and/or the side walls are provided with a plurality of projections. As the bottom plate and/or the side walls of the discharge chute are provided with projections, the roughness of the discharge chute is improved, the frictional resistance is increased, the turbulent energy dissipation rate is improved, a large amount of water flow energy is consumed, the risk of cavitation damage and erosion damage of the discharge chute is reduced, and the flood discharge safety is improved..
Description
Technical field
The present invention relates to the Hydraulic and Hydro-Power Engineering outlet structure escape works and let out groove, particularly a kind of prominent body that is applicable to the high roughness of high-velocity flow is let out groove.
Background technology
For the Hydraulic and Hydro-Power Engineering outlet structure escape works, letting out groove is the passage of confinement of flow, guiding current.At present, base plate, the side wall of letting out groove adopt smooth continuous smooth-going pattern more, ideally, the smooth-going groove of letting out has preferably adaptive capacity to high-velocity flow under the cooperation of air mixing corrosion reducing facility, can guide preferably under the current and let out, and reduce or remit self cavitation erosion and erosion attack, but in the reality, because flow velocity is high, smooth-goingly let out the risk that groove still exists cavitation erosion and erosion attack.In the situation less at the flow rate of water flow of letting out groove, that discharge per unit width is little, let out groove and can adopt the ladder pattern, ladder is let out groove can be along the journey energy of current stopped that disappears under the effect of ladder, reduce the lower stream flow velocity that sluices, be conducive to the linking of downstream river course current, ladder is let out groove easily by the high-velocity flow erosion attack, lets out the groove flow rate of water flow and need to control within the specific limits.
Summary of the invention
Technical problem to be solved by this invention is, and is not enough for prior art, provides a kind of prominent body to let out groove, reduces the risk of letting out groove self cavitation erosion and erosion attack, reduces the anti-stamping press of the energy dissipating of letting out the groove downstream, improves the flood discharge safety.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is: a kind of prominent body is let out groove, comprises the side wall of base plate and base plate both sides, and described base plate is fold-line-shaped, and perhaps described base plate is the linear of inclination, and base plate and/or side wall are provided with several prominent bodies.
As preferred version, described prominent body interlaced arrangement.
Described prominent body is hemispherical or streamlined, and the height of prominent body is 0.5m～2.0m.
The average grade of described base plate is 5～60
0
As preferred version, also comprise the air mixing corrosion reducing facility, described air mixing corrosion reducing facility is connected with the base plate upstream extremity.
Compared with prior art, the beneficial effect that the present invention has is: the present invention is by arranging prominent body at chute bottom slab and/or side wall, improve the roughness of letting out groove, increase frictional resistance, improved disorderly kinetic energy dissipation rate, a large amount of flow energy that dissipates has reduced the risk of letting out groove self cavitation erosion and erosion attack, reduce the anti-stamping press of the energy dissipating of letting out the groove downstream, improved the flood discharge safety.
Description of drawings
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.
The specific embodiment
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, and described base plate 2 is fold-line-shaped, and base plate 2 and side wall 3 are provided with several prominent bodies 1; Prominent body 1 is hemispherical or streamlined, and the height of prominent body is 0.5m～2.0m, prominent body 1 interlaced arrangement; The average grade of base plate 2 is 5～60
0Air mixing corrosion reducing facility 4 is connected with the upstream extremity of base plate 2;
The size of prominent body 1 should determine that when adopting the prominent body of hemispherical, the ratio of hemispherical height and end circular diameter can be controlled between 1:2～1:8 according to letting out the groove hydraulics; Vertical or horizontal spacing between the prominent body 1 can be controlled at the bottom of 2～8 times of hemisphericals between the circular diameter, and to obtain maximum roughness value, the roughness value can be controlled between 0.04～0.12; According to letting out the hydraulics such as groove flow rate of water flow, the depth of water, prominent body can be set directly on the chute bottom slab, also can will prominent body be set behind the parallel recessed certain depth of chute bottom slab again; Prominent body can adopt prefabricated units, and the reserved steel bar joint, during construction it is lifted to the installation site, and reserved steel bar is connected with peripheral reinforcing bar, and then the groove concrete is let out in cast.
At chute bottom slab and side wall prominent body is set, can improves the roughness of letting out groove, increase frictional resistance.High-velocity flow flows to sharply change under the effect of prominent body, prominent body downstream forms the shearing energy dissipating whirlpool body of various yardsticks, and the inner turbulence intensity of water body obviously increases, and has improved disorderly kinetic energy dissipation rate, and a large amount of flow energy dissipates.
Claims (6)
1. a prominent body is let out groove, comprises the side wall of base plate and base plate both sides, it is characterized in that, described base plate is fold-line-shaped, and perhaps described base plate is the linear of inclination, and base plate and/or side wall are provided with several prominent bodies.
2. prominent body according to claim 1 is let out groove, it is characterized in that, described prominent body interlaced arrangement.
3. prominent body according to claim 1 and 2 is let out groove, it is characterized in that, described prominent body is hemispherical or streamlined, and the height of prominent body is 0.5m～2.0m.
4. prominent body according to claim 3 is let out groove, it is characterized in that, the prominent height of described hemispherical is 1:2～1:8 with the ratio of circular diameter at the bottom of the hemispherical, and the prominent vertical or horizontal spacing of body of hemispherical is 2～8 times of circular diameters at the bottom of the hemispherical.
5. prominent body according to claim 1 is let out groove, it is characterized in that, the average grade of described base plate is 5～60
0
6. prominent body according to claim 1 is let out groove, it is characterized in that, also comprises the air mixing corrosion reducing facility, and described air mixing corrosion reducing facility is connected with the base plate upstream extremity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104773654A CN102926360A (en) | 2012-11-22 | 2012-11-22 | Discharge chute with projections |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104773654A CN102926360A (en) | 2012-11-22 | 2012-11-22 | Discharge chute with projections |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102926360A true CN102926360A (en) | 2013-02-13 |
Family
ID=47641277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104773654A Pending CN102926360A (en) | 2012-11-22 | 2012-11-22 | Discharge chute with projections |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102926360A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103225292A (en) * | 2013-05-27 | 2013-07-31 | 珠江水利委员会珠江水利科学研究院 | Dam face energy dissipation tool |
| CN103614994A (en) * | 2013-12-06 | 2014-03-05 | 河海大学 | Energy dissipation flood discharging device |
| CN107663851A (en) * | 2017-09-29 | 2018-02-06 | 昆明理工大学 | A kind of anti-cavitation curved Stepped Spillway of destruction |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004027579A (en) * | 2002-06-25 | 2004-01-29 | Kubota Corp | De-energizing pipe for sewage |
| 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 |
| CN202073075U (en) * | 2011-05-09 | 2011-12-14 | 广东省水利水电科学研究院 | Discontinuous convex type step energy dissipater |
| CN202899097U (en) * | 2012-11-22 | 2013-04-24 | 中国水电顾问集团中南勘测设计研究院 | Protruding body discharge chute |
-
2012
- 2012-11-22 CN CN2012104773654A patent/CN102926360A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004027579A (en) * | 2002-06-25 | 2004-01-29 | Kubota Corp | De-energizing pipe for sewage |
| 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 |
| CN202073075U (en) * | 2011-05-09 | 2011-12-14 | 广东省水利水电科学研究院 | Discontinuous convex type step energy dissipater |
| CN202899097U (en) * | 2012-11-22 | 2013-04-24 | 中国水电顾问集团中南勘测设计研究院 | Protruding body discharge chute |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103225292A (en) * | 2013-05-27 | 2013-07-31 | 珠江水利委员会珠江水利科学研究院 | Dam face energy dissipation tool |
| CN103225292B (en) * | 2013-05-27 | 2015-10-28 | 珠江水利委员会珠江水利科学研究院 | A kind of dam face energy dissipation tool |
| CN103614994A (en) * | 2013-12-06 | 2014-03-05 | 河海大学 | Energy dissipation flood discharging device |
| CN103614994B (en) * | 2013-12-06 | 2015-08-12 | 河海大学 | Energy dissipating flood discharge device |
| CN107663851A (en) * | 2017-09-29 | 2018-02-06 | 昆明理工大学 | A kind of anti-cavitation curved Stepped Spillway of destruction |
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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 of 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. |
|
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130213 |