CN203514273U - Large-incidence-angle diffusion-type drop sill underflow energy dissipation structure - Google Patents
Large-incidence-angle diffusion-type drop sill underflow energy dissipation structure Download PDFInfo
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- CN203514273U CN203514273U CN201320435987.0U CN201320435987U CN203514273U CN 203514273 U CN203514273 U CN 203514273U CN 201320435987 U CN201320435987 U CN 201320435987U CN 203514273 U CN203514273 U CN 203514273U
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Abstract
The utility model relates to a large-incidence-angle diffusion-type drop sill underflow energy dissipation structure, and aims to provide the large-incidence-angle diffusion-type drop sill underflow energy dissipation structure which is simple in structure and convenient to construct in order to shorten the length of an energy dissipation building, reduce the project investment and guarantee the project safety. According to the technical scheme, the large-incidence-angle diffusion-type drop sill underflow energy dissipation structure is provided with a discharge groove and a stilling pool and is characterized in that the tail of the discharge groove is divided into a discharge groove curve section and a discharge groove abrupt slope section, the curve section is in smooth joint with the abrupt slope section, the tail end of the abrupt slope section is directly connected with the stilling pool, a drop sill and an sudden enlargement part are arranged at the connecting position of the discharge groove abrupt slope section and the stilling pool and the tail of the stilling pool is provided with a tail sill. The large-incidence-angle diffusion-type drop sill underflow energy dissipation structure is applicable to flood discharge and energy dissipation buildings in water conservancy and hydropower engineering.
Description
Technical field
The utility model relates to a kind of large angle of incidence diffusion type and falls bank disspation through hydraudic jimp structure.Be applicable to Hydraulic and Hydro-Power Engineering flood-discharge energy-dissipating building.
Background technology
In Hydraulic and Hydro-Power Engineering, the underflow stilling basin of flood-discharge energy-dissipating building routine generally forms by letting out groove, anti-arc or parabola, absorption basin and tail bank.It is more slow than generally that water flows into the incident slope of pond absorption basin, generally lets out to connect anti-arc after groove or parabola is adjusted current incident angle, and to reach effect of energy dissipation, general to let out well width consistent with upstream for absorption basin width simultaneously.Some engineering is subject to the restrictions such as topographic and geologic condition, has restricted spillway layout, need to shorten energy-disspating length.How reaching and shorten energy-disspating length, can meet disspation through hydraudic jimp requirement again, guarantee effect of energy dissipation, avoid the pressure fluctuation meter of base plate and underflow speed excessive, guarantee base arrangement safety, is a key technology of disspation through hydraudic jimp Building Design.
Summary of the invention
The technical problems to be solved in the utility model is: for the problem of above-mentioned existence, provide a kind of large angle of incidence diffusion type simple in structure, easy construction to fall bank disspation through hydraudic jimp structure, to shorten energy-disspating length, reduce construction investment, guarantee engineering safety.
The technical scheme that the utility model adopts is: a kind of large angle of incidence diffusion type falls bank disspation through hydraudic jimp structure, there is the groove of letting out and absorption basin, it is characterized in that: described in let out groove end and be divided into and let out groove curved section and let out groove steep slope section, curved section and steep slope section link up smoothly, steep slope section end directly connects absorption basin, let out groove steep slope section and absorption basin junction and arrange and fall bank and sudden expansion, described absorption basin end arranges tail bank.
Described absorption basin strengthens gradually along water (flow) direction width.
Compare for 1:1.5 ~ 1:1.0 on the described groove steep slope section slope of letting out, and the gradient is 33.69 ° ~ 45 °; The depth displacement that falls bank is 5m ~ 10m; The width of sudden expansion is 0.5m ~ 1.5m; The height of tail bank is 5m ~ 15m.
The beneficial effects of the utility model are: the present invention will let out groove steep slope section and directly be connected with absorption basin, in junction, arrange and fall bank, utilize absorption basin to carry out energy dissipating, and the anterior diffusion of the power that wherein disappears, strengthens absorption basin width, and energy dissipating water body increases.The invention solves part engineering because topographic and geologic is former thereby need to shorten the problem of letting out groove and absorption basin length, reach energy dissipating requirement, guaranteed engineering safety requirement, anti-arc or parabola joining section have been reduced simultaneously, build simplifies the structure, this form flood-discharge energy-dissipating building is arranged more flexible, met complex topographical and geological condition condition.
Accompanying drawing explanation
Fig. 1 is layout plan of the present utility model.
Fig. 2 is sectional view of the present utility model.
Fig. 3 is flow-shape schematic diagram in the utility model.
The specific embodiment
As shown in Figure 1 and Figure 2, the present embodiment is that a kind of large angle of incidence diffusion type falls bank disspation through hydraudic jimp structure, by letting out groove 1 and absorption basin 4 forms, lets out groove 1 end and is divided into and lets out groove curved section 101 and let out groove steep slope section 102, curved section and steep slope section smooth connection.Let out groove steep slope section 102 downstreams and be directly connected with absorption basin 4, steep slope section slope is than steep, and the large angle of incidence of current enters absorption basin, and arranges and fall bank 3 and sudden expansion 7 in junction, and the end of absorption basin 4 arranges tail bank 6.The anterior diffusion of absorption basin 4, its width strengthens gradually along water (flow) direction, and energy dissipating water body increases.
The present embodiment utilizes tail bank 6 to make absorption basin 4 keep certain water body, groove 1 end is let out in utilization and downstream absorption basin base plate has certain height difference, current enter in the middle of energy dissipating water body in the mode of jet, the main flow of lower sluicing stream is flowed in absorption basin 4, diffusion, energy dissipating, both guarantee effect of energy dissipation, and made again the pressure fluctuation meter of absorption basin base plate and underflow speed moderate, guaranteed base plate safety, shortened flood-discharge energy-dissipating building length, build simplifies the structure simultaneously.
Letting out groove steep slope section 102 and falling bank 3 is to affect angle of incidence, whirlpool district, bottom, impact zone scope and the big or small principal element that current enter absorption basin 4, is directly connected to effect of energy dissipation and flood-discharge energy-dissipating building length; The size of tail bank 6 was key factors that bank current are stopped up secondary energy dissipating after high and bank.In sum, reasonably design is let out groove steep slope section 102, is fallen bank 3 and tail bank 6 is keys of this routine energy dissipating success or not.In this example, described in let out groove steep slope section 102 slope than being 1:1.5, the gradient is 33.69 °, the depth displacement that falls bank 3 is 6.0m, the width of sudden expansion 7 is 0.5m, the height of tail bank 6 is 6.0m.
As shown in Figure 3, the current flood discharge fluidised form of this example is described below:
1,, along letting out the current B that groove is let out for 1 time, by the gradient of letting out groove steep slope section 102, enter absorption basin 4 letting out groove end.Owing to falling bank 3 effects, make to let out groove face current B and enter absorption basin 4 with mode of jet, C is fluerics, forms bottom whirlpool district F, whirlpool district, top E, impact zone G, Hydraulic Jump Region H under the effect of the level of tail water, and D is whirlpool center, bottom, and A is recirculating zone.
2, let out under groove face and sluice and flow B, because falling the effect of bank 3 and the level of tail water, through the effects such as buffering energy dissipating of water cushion, current arrive impact zone G, than the flow velocity of fluerics C, obviously reduce, and current obviously reduce the impact of absorption basin base plate; Due to sudden expansion 7 and gradual change absorption basin width widen, energy dissipating water body increases, and is of value to reducing of absorption basin length simultaneously.
3, current B is after falling bank 3 and absorption basin 4 combined energy dissipations, latter half of at absorption basin 4, and current tend towards stability, and with the form of fluidised form I, by tail bank, current are during by tail bank 6, and the water surface is lifting slightly, and the rear water surface of tail bank 6 slightly falls.
Claims (3)
1. a large angle of incidence diffusion type falls bank disspation through hydraudic jimp structure, there is the groove of letting out (1) and absorption basin (4), it is characterized in that: described in let out groove (1) end and be divided into and let out groove curved section (101) and let out groove steep slope section (102), curved section and steep slope section link up smoothly, steep slope section end directly connects absorption basin (4), let out groove steep slope section (102) and arrange and fall bank (3) and sudden expansion (7) with absorption basin (4) junction, described absorption basin (4) end arranges tail bank (6).
2. large angle of incidence diffusion type according to claim 1 falls bank disspation through hydraudic jimp structure, it is characterized in that: described absorption basin (4) strengthens gradually along water (flow) direction width.
3. large angle of incidence diffusion type according to claim 1 falls bank disspation through hydraudic jimp structure, it is characterized in that: described in let out groove steep slope section (102) slope than for 1:1.5 ~ 1:1.0, the gradient is 33.69 ° ~ 45 °; The depth displacement that falls bank (3) is 5m ~ 10m; The width of sudden expansion (7) is 0.5m ~ 1.5m; The height of tail bank (6) is 5m ~ 15m.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320435987.0U CN203514273U (en) | 2013-07-22 | 2013-07-22 | Large-incidence-angle diffusion-type drop sill underflow energy dissipation structure |
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| CN201320435987.0U CN203514273U (en) | 2013-07-22 | 2013-07-22 | Large-incidence-angle diffusion-type drop sill underflow energy dissipation structure |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104452691A (en) * | 2014-12-29 | 2015-03-25 | 中国电建集团中南勘测设计研究院有限公司 | Near-surface submersible submerged jet flow energy dissipation structure |
| CN104695391A (en) * | 2015-02-13 | 2015-06-10 | 水利部交通运输部国家能源局南京水利科学研究院 | Diffusion type inverse step rectification and energy dissipation method and absorption basin |
| CN104775393A (en) * | 2015-02-13 | 2015-07-15 | 水利部交通运输部国家能源局南京水利科学研究院 | Deformed inverse step rectifying energy dissipation method and stilling basin |
| CN106120673A (en) * | 2016-06-30 | 2016-11-16 | 四川大学 | The turning spillway being applicable under high Froude number |
| CN106759163A (en) * | 2017-03-02 | 2017-05-31 | 中国电建集团贵阳勘测设计研究院有限公司 | Stilling pool tail sill structure adopting bottom hole for sand discharge |
| CN109594533A (en) * | 2018-12-10 | 2019-04-09 | 四川大学 | A kind of minor air cell's stilling pond |
| 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 |
| CN112854151A (en) * | 2021-01-15 | 2021-05-28 | 安徽省引江济淮集团有限公司 | Rectifying energy dissipation well falling device |
| CN112921916A (en) * | 2021-04-21 | 2021-06-08 | 东莞市水利勘测设计院有限公司 | Abrupt slope energy dissipation facility |
| 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 |
-
2013
- 2013-07-22 CN CN201320435987.0U patent/CN203514273U/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104452691B (en) * | 2014-12-29 | 2016-03-02 | 中国电建集团中南勘测设计研究院有限公司 | A kind of shallow top layer submersible submerged jets energy-dissipating structure |
| CN104452691A (en) * | 2014-12-29 | 2015-03-25 | 中国电建集团中南勘测设计研究院有限公司 | Near-surface submersible submerged jet flow energy dissipation structure |
| CN104695391A (en) * | 2015-02-13 | 2015-06-10 | 水利部交通运输部国家能源局南京水利科学研究院 | Diffusion type inverse step rectification and energy dissipation method and absorption basin |
| CN104775393A (en) * | 2015-02-13 | 2015-07-15 | 水利部交通运输部国家能源局南京水利科学研究院 | Deformed inverse step rectifying energy dissipation method and stilling basin |
| CN106120673A (en) * | 2016-06-30 | 2016-11-16 | 四川大学 | The turning spillway being applicable under high Froude number |
| CN106759163B (en) * | 2017-03-02 | 2022-11-22 | 中国电建集团贵阳勘测设计研究院有限公司 | Stilling pool tail sill structure adopting bottom hole for sand discharge |
| CN106759163A (en) * | 2017-03-02 | 2017-05-31 | 中国电建集团贵阳勘测设计研究院有限公司 | Stilling pool tail sill structure adopting bottom hole for sand discharge |
| CN109594533A (en) * | 2018-12-10 | 2019-04-09 | 四川大学 | A kind of minor air cell's stilling pond |
| 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 |
| CN112854151A (en) * | 2021-01-15 | 2021-05-28 | 安徽省引江济淮集团有限公司 | Rectifying energy dissipation well falling device |
| CN112854151B (en) * | 2021-01-15 | 2022-06-03 | 安徽省引江济淮集团有限公司 | Rectifying energy dissipation well-falling device |
| CN112921916A (en) * | 2021-04-21 | 2021-06-08 | 东莞市水利勘测设计院有限公司 | Abrupt slope energy dissipation facility |
| 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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Granted publication date: 20140402 |
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| CF01 | Termination of patent right due to non-payment of annual fee |