CN201254714Y - Suddenly enlarged and drop sill type underflow energy dissipating work structure - Google Patents
Suddenly enlarged and drop sill type underflow energy dissipating work structure Download PDFInfo
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- CN201254714Y CN201254714Y CNU2008200812502U CN200820081250U CN201254714Y CN 201254714 Y CN201254714 Y CN 201254714Y CN U2008200812502 U CNU2008200812502 U CN U2008200812502U CN 200820081250 U CN200820081250 U CN 200820081250U CN 201254714 Y CN201254714 Y CN 201254714Y
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- base plate
- side wall
- main flow
- energy dissipating
- utility
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- 238000010521 absorption reaction Methods 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 11
- 230000021715 photosynthesis, light harvesting Effects 0.000 abstract description 4
- 238000009792 diffusion process Methods 0.000 abstract description 2
- 230000003116 impacting effect Effects 0.000 abstract description 2
- 230000003247 decreasing effect Effects 0.000 abstract 2
- 238000000889 atomisation Methods 0.000 abstract 1
- 230000003628 erosive effect Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
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Abstract
The utility model relates to a sudden enlargement drop-sill underflow energy dissipater structure, which provides a falling-sill with a certain vertical height downwards from a base plate at the end of a spillway of a stilling basin, the sudden enlargement with a certain distance is arranged on a horizontal direction of a side wall. After an incoming main flow moves a certain distance in energy dissipation water and obtains certain diffusion, the main flow can just reaches the base plate and the side wall, the incoming main flow directly impacting the base plate and the side wall is avoided. So compared with a traditional underflow energy dissipater, hydraulic indexes of the base plate and the side wall are decreased greatly, the stability of the base plate and the side wall is increased, the hydraulic indexes of the stilling basin base plate and the side wall can be decreased effectively, the efficiency is increased greatly, and the utility model has the advantages that atomization is lower, the flow state is stable and the like.
Description
Technical field
The utility model relates to a kind of sudden expansion and falls bank type disspation through hydraudic jimp worker structure, and it can solve high water head, big discharge per unit width and atomizing be had the flood-discharge energy-dissipating problem of strict demand engineering.
Background technology
As everyone knows, traditional disspation through hydraudic jimp worker utilizes to produce a kind of energy dissipating mode that hydraulic jump is carried out energy dissipating in the absorption basin.The principal character of disspation through hydraudic jimp is that jet faces the end, and underflow speed is very high, and water surface has the milky whirlpool to roll, a large amount of aerations.Jet by turbulent fluctuation, diffusion and blending etc., carries out the exchange of quality, momentum and energy to reach the purpose of energy dissipating with water body on every side in the hydraulic jump district.Continuous increase along with the high water head outlet structure escape works; though being used for the disspation through hydraudic jimp worker of high water head flood discharge increases to some extent; but compare with the flip trajectory bucket form, be still minority, its reason is to adopt traditional disspation through hydraudic jimp mode; then exist face the end and to face the hydraulic indexes of abutment wall higher; the bigger problem of erosion protection difficulty of base plate and abutment wall still, is compared with trajectory bucket type energy; the flood-discharge atomizing that disspation through hydraudic jimp worker causes is very little, and is less to the surrounding enviroment influence.Along with improving constantly of national environmental consciousness, the application of disspation through hydraudic jimp in high dam, big traffic engineering is the problem of demanding urgently researching and solving.
Summary of the invention
The problem that hydraulic indexes is higher, the erosion protection difficulty is bigger that absorption basin faces the end and faces abutment wall when being used for the high water head outlet structure escape works in order to overcome traditional disspation through hydraudic jimp worker; the utility model provides a kind of sudden expansion to fall bank type disspation through hydraudic jimp worker structure; this novel energy dissipating construction not only can reduce absorption basin and face the end and face the hydraulic indexes of abutment wall, and has the advantage of energy dissipation rate height and downstream fluid stable.
The technical scheme that its technical problem that solves the utility model adopts is: it is on space ternary energy dissipation by hydraulic jump mechanism and submerged jets mechanism of energy dissipation basis that bank type disspation through hydraudic jimp worker structure is fallen in sudden expansion, let out the terminal absorption basin base plate of groove excavate downwards certain vertical height form fall bank and abutment wall in the horizontal direction the certain distance of spread form sudden expansion, make down and let out high-velocity flow and enter energy dissipating water body middle part, formed strong shear layer and strong whirlpool rolls, blending to be to reach the purpose of energy dissipating around main flow.
The utility model is owing to all have certain vertical and horizontal range apart from base plate and abutment wall by letting out after the jet of letting out under the groove enters absorption basin, going into the pond main flow moves in the energy dissipating water body and just arrives base plate and abutment wall after a segment distance is necessarily spread, avoided the pond main flow directly to impact base plate and abutment wall, so compare with traditional disspation through hydraudic jimp worker, the hydraulic indexes at base plate and abutment wall place reduces greatly, has increased the stability of base plate and abutment wall.
The beneficial effects of the utility model are: can reduce absorption basin base plate and abutment wall place hydraulic indexes effectively, improve the usefulness rate significantly, and have advantages such as atomizing is lower, fluid stable.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further specified, but structure of the present utility model is not limited to shown in the accompanying drawing.
Fig. 1 is a build floor map of the present utility model.
Fig. 2 is a build elevational schematic view of the present utility model.
The specific embodiment
Among Fig. 1 and Fig. 2,1 for let out groove, 2 for abutment wall spread distance, 3 for absorption basin, 4 for the absorption basin end, 5 for tail water section, 6 for going into pond angle, 7 for falling bank.
Go into pond current along letting out groove 1 or overfall dam enters absorption basin 3, because the existence of the sudden expansion of abutment wall spread distance 2 is arranged, current enter energy dissipating water body middle part, go into pond current and discontinuity surface that hastens of impounded body generation on every side, by the turbulence force Xue Zhi, velocity discontinuity is unsettled, must produce fluctuation, and develop into vortex, thus cause turbulent fluctuation, mixed ginseng and momentum, mass exchange, to consume big energy.Because fall the existence of bank 7, main flow avoids directly impacting absorption basin 3 base plates after entering absorption basin 3, after journey consumption part energy, just arrive base plate, so the hydraulic indexes of absorption basin 3 base plates is lower greatly.When current flowed out absorption basin end 4 tail banks, energy reduced greatly, and fluidised form is steady, and it is low to atomize.
Claims (1)
1, bank type disspation through hydraudic jimp worker structure is fallen in a kind of sudden expansion, it is characterized in that: letting out the bank that falls that the terminal absorption basin of groove (1) (3) base plate has certain vertical height downwards, having the sudden expansion of certain distance in the horizontal direction of abutment wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200812502U CN201254714Y (en) | 2008-05-26 | 2008-05-26 | Suddenly enlarged and drop sill type underflow energy dissipating work structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200812502U CN201254714Y (en) | 2008-05-26 | 2008-05-26 | Suddenly enlarged and drop sill type underflow energy dissipating work structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201254714Y true CN201254714Y (en) | 2009-06-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200812502U Expired - Fee Related CN201254714Y (en) | 2008-05-26 | 2008-05-26 | Suddenly enlarged and drop sill type underflow energy dissipating work structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201254714Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101858069A (en) * | 2010-06-23 | 2010-10-13 | 河海大学 | Method for judging flow state of throat-type energy dissipater |
| CN102286963A (en) * | 2011-07-01 | 2011-12-21 | 大连理工大学 | New shape overflow dam and bottom flow energy dissipation method |
| RU2478751C1 (en) * | 2011-10-28 | 2013-04-10 | Федеральное Государственное Автономное Образовательное Учреждение Высшего Профессионального Образования "Сибирский Федеральный Университет" | Downstream apron of water discharge structure |
| CN103266583A (en) * | 2013-05-24 | 2013-08-28 | 中国水电顾问集团北京勘测设计研究院 | Bent slope underflow energy dissipation structure of water conservancy and hydropower engineering |
| CN110284468A (en) * | 2019-07-12 | 2019-09-27 | 中国电建集团北京勘测设计研究院有限公司 | A kind of flood-discharge energy-dissipating structure for high flow rate non-pressure tunnel |
| CN113718727A (en) * | 2021-09-07 | 2021-11-30 | 中国电建集团昆明勘测设计研究院有限公司 | Sudden expansion and falling sill absorption basin suitable for large single wide discharge of high water head |
-
2008
- 2008-05-26 CN CNU2008200812502U patent/CN201254714Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101858069A (en) * | 2010-06-23 | 2010-10-13 | 河海大学 | Method for judging flow state of throat-type energy dissipater |
| CN101858069B (en) * | 2010-06-23 | 2012-02-15 | 河海大学 | Method for judging flow state of throat-type energy dissipater |
| CN102286963A (en) * | 2011-07-01 | 2011-12-21 | 大连理工大学 | New shape overflow dam and bottom flow energy dissipation method |
| RU2478751C1 (en) * | 2011-10-28 | 2013-04-10 | Федеральное Государственное Автономное Образовательное Учреждение Высшего Профессионального Образования "Сибирский Федеральный Университет" | Downstream apron of water discharge structure |
| CN103266583A (en) * | 2013-05-24 | 2013-08-28 | 中国水电顾问集团北京勘测设计研究院 | Bent slope underflow energy dissipation structure of water conservancy and hydropower engineering |
| CN103266583B (en) * | 2013-05-24 | 2015-05-20 | 中国水电顾问集团北京勘测设计研究院 | Bent slope underflow energy dissipation structure of water conservancy and hydropower engineering |
| CN110284468A (en) * | 2019-07-12 | 2019-09-27 | 中国电建集团北京勘测设计研究院有限公司 | A kind of flood-discharge energy-dissipating structure for high flow rate non-pressure tunnel |
| CN113718727A (en) * | 2021-09-07 | 2021-11-30 | 中国电建集团昆明勘测设计研究院有限公司 | Sudden expansion and falling sill absorption basin suitable for large single wide discharge of high water head |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090610 Termination date: 20120526 |