CN204225059U - Air entraining facilities bottom high flow rate runner - Google Patents
Air entraining facilities bottom high flow rate runner Download PDFInfo
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- CN204225059U CN204225059U CN201420685875.5U CN201420685875U CN204225059U CN 204225059 U CN204225059 U CN 204225059U CN 201420685875 U CN201420685875 U CN 201420685875U CN 204225059 U CN204225059 U CN 204225059U
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- aeration hole
- bank
- side portions
- mid portion
- flow rate
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Abstract
The utility model relates to air entraining facilities bottom a kind of high flow rate runner, particularly air entraining facilities bottom a kind of high flow rate runner being applied to Hydraulic and Hydro-Power Engineering technical field.The utility model provides a kind of to engineering complex conditions strong adaptability, can air entraining facilities bottom the high flow rate runner of effective bar aeration effect, comprise bottom and choose bank and aeration hole, it is ramp structure that bank is chosen in described bottom, described aeration hole is positioned at the end that bank is chosen in bottom, bank one end near aeration hole is chosen higher than its one end away from aeration hole in described bottom, bottom is chosen bank and is made up of mid portion and two side portions, and the height of described mid portion in the one end near aeration hole is lower than the height of two side portions in the one end near aeration hole.Due to mid portion and two side portions composition, the height of described mid portion in the one end near aeration hole is lower than the height of two side portions in the one end near aeration hole, therefore the overflow of the current formation of both sides is longer, is more conducive to mixing of air when the current of both sides flow through aeration hole.
Description
Technical field
The utility model relates to air entraining facilities bottom a kind of high flow rate runner, particularly air entraining facilities bottom a kind of high flow rate runner being applied to Hydraulic and Hydro-Power Engineering technical field.
Background technology
Along with country is to the demand of water power clean energy resource, build a large amount of high dams, the corresponding flood discharging tunnel also having built high water head for flood discharge, high flow rate.High-velocity flow turbulent fluctuation causes flow cavitation effect to form weak impact power to the concrete of flood discharging tunnel flow-passing surface, and long term easily causes flood discharging tunnel cavitation erosion, for solving this problem, and need to aeration bottom high-velocity flow to protect flow-passing surface.Bottom flood discharging tunnel, the many utilizations of aeration are chosen bank or are fallen bank and bottom high-velocity flow, form one stablize negative pressure cavity, utilize suction function, ensure current aeration.Traditional air mixing corrosion reducing facility can adopt and choose bank, fall bank, aeration groove, side extend to its various combination form, and its build and size generally through hydraulic model test checking and should be optimized.The layout of flood discharging tunnel restricts by many factors such as the hydrology, geology, landform, water conservancy project, construction, water conservancy diversion, particularly in high mountain diagonal valley area, be subject to the restriction of various factors, layout pattern is often comparatively complicated, includes crimping new line, directly slope with no pressure, imperial and adds Long Luowei.And a lot of flood discharging tunnel flow is large at present, flow velocity is high, and the pattern of current existing air mixing corrosion reducing facility there is no the engineering demand that method meets various complex condition.Therefore also do not have a kind of to engineering complex conditions strong adaptability in prior art, can air entraining facilities bottom the high flow rate runner of effective bar aeration effect.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of to engineering complex conditions strong adaptability, can air entraining facilities bottom the high flow rate runner of effective bar aeration effect.
For solving the problems of the technologies described above, air entraining facilities bottom the high flow rate runner that the utility model adopts, comprise bottom and choose bank and aeration hole, it is ramp structure that bank is chosen in described bottom, described aeration hole is positioned at the end that bank is chosen in bottom, bank one end near aeration hole is chosen higher than its one end away from aeration hole in described bottom, and described bottom is chosen bank and is made up of mid portion and two side portions, and the height of described mid portion in the one end near aeration hole is lower than the height of two side portions in the one end near aeration hole.
Further, the slope of described mid portion is than the slope ratio being less than two side portions.
Further, also changeover portion is provided with between described mid portion and two side portions.
Further, described changeover portion is leg-of-mutton inclined-plane, and being connected with two side portions of described inclined-plane, another side is connected with mid portion.
The beneficial effects of the utility model are: due to mid portion and two side portions composition, the height of described mid portion in the one end near aeration hole is lower than the height of two side portions in the one end near aeration hole, therefore the overflow of the current formation of both sides is longer, mixing of air is more conducive to like this when the current of both sides flow through aeration hole, simultaneously because the height of mid portion is lower, the fluidised form of whole current is guaranteed.The height playing slope point due to mid portion and two side portions identical therefore adopts different slope ratios, allow the slope of mid portion than the slope ratio being less than two side portions, bottom just can be made to choose bank and form the height of mid portion in the one end near aeration hole gently lower than two side portions this structure of height in the one end near aeration hole.The slow transition of two parts that the changeover portion arranged between mid portion from two side portions makes the gradient different, avoids the stability affecting current because of unexpected drop.Changeover portion adopts leg-of-mutton inclined-plane, can gently make slope obtain nature transition than different mid portions and two side portions, is conducive under high flow rate, keeping its stability at current.
Accompanying drawing explanation
Fig. 1 is sectional view of the present utility model;
Fig. 2 is three-dimensional structure schematic diagram of the present utility model;
Component, position and numbering in figure: bank 1, aeration hole 2, mid portion 3, two side portions 4, changeover portion 5 are chosen in bottom.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figures 1 and 2, air entraining facilities bottom high flow rate runner of the present utility model, comprise bottom and choose bank 1 and aeration hole 2, bank 1 is chosen for ramp structure in described bottom, described aeration hole 2 is positioned at the end that bank 1 is chosen in bottom, bank 1 one end near aeration hole 2 is chosen higher than its one end away from aeration hole 2 in described bottom, it is characterized in that: described bottom is chosen bank 1 and is made up of mid portion 3 and two side portions 4, the height of described mid portion 3 in the one end near aeration hole 2 is lower than the height of two side portions 4 in the one end near aeration hole 2.Form in mid portion 3 and two side portions 4, the height of described mid portion 3 in the one end near aeration hole 2 is lower than the height of two side portions 4 in the one end near aeration hole 2, therefore the overflow of the current formation of both sides is longer, mixing of air is more conducive to like this when the current of both sides flow through aeration hole 2, simultaneously because the height of mid portion 3 is lower, the fluidised form of whole current is guaranteed.
The slope of described mid portion 3 is than the slope ratio being less than two side portions 4.The height playing slope point due to mid portion 3 and two side portions 4 identical therefore adopts different slope ratios, allow the slope of mid portion 3 than the slope ratio being less than two side portions 4, bottom just can be made to choose bank 1 and form the height of mid portion 3 in the one end near aeration hole 2 gently lower than two side portions 4 this structure of height in the one end near aeration hole 2.
Changeover portion 5 is also provided with between described mid portion 3 and two side portions 4.The slow transition of two parts that the changeover portion 5 arranged between mid portion 3 from two side portions 4 makes the gradient different, avoids the stability affecting current because of unexpected drop.
Described changeover portion 5 is leg-of-mutton inclined-plane, and being connected with two side portions 4 of described inclined-plane, another side is connected with mid portion 3.Changeover portion 5 adopts leg-of-mutton inclined-plane, can gently make slope obtain nature transition than different mid portions 3 and two side portions 4, is conducive under high flow rate, keeping its stability at current.
Claims (4)
1. air entraining facilities bottom high flow rate runner, comprise bottom and choose bank (1) and aeration hole (2), it is ramp structure that bank (1) is chosen in described bottom, described aeration hole (2) is positioned at the end that bank (1) is chosen in bottom, bank (1) one end near aeration hole (2) is chosen higher than its one end away from aeration hole (2) in described bottom, it is characterized in that: described bottom is chosen bank (1) and is made up of mid portion (3) and two side portions (4), the height of described mid portion (3) in the one end near aeration hole (2) is lower than the height of two side portions (4) in the one end near aeration hole (2).
2. air entraining facilities bottom high flow rate runner as claimed in claim 1, is characterized in that: the slope ratio of described mid portion (3) is less than the slope ratio of two side portions (4).
3. air entraining facilities bottom high flow rate runner as claimed in claim 2, is characterized in that: be also provided with changeover portion (5) between described mid portion (3) and two side portions (4).
4. air entraining facilities bottom high flow rate runner as claimed in claim 3, it is characterized in that: described changeover portion (5) is leg-of-mutton inclined-plane, described inclined-plane while be connected with two side portions (4), another side is connected with mid portion (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420685875.5U CN204225059U (en) | 2014-11-14 | 2014-11-14 | Air entraining facilities bottom high flow rate runner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420685875.5U CN204225059U (en) | 2014-11-14 | 2014-11-14 | Air entraining facilities bottom high flow rate runner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204225059U true CN204225059U (en) | 2015-03-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420685875.5U Active CN204225059U (en) | 2014-11-14 | 2014-11-14 | Air entraining facilities bottom high flow rate runner |
Country Status (1)
| Country | Link |
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| CN (1) | CN204225059U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109356119A (en) * | 2018-11-23 | 2019-02-19 | 中国电建集团成都勘测设计研究院有限公司 | Let out slot aerator structure |
| CN112609643A (en) * | 2020-12-21 | 2021-04-06 | 大连理工大学 | Aeration facility combining dovetail ridge and wedge-shaped groove |
-
2014
- 2014-11-14 CN CN201420685875.5U patent/CN204225059U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109356119A (en) * | 2018-11-23 | 2019-02-19 | 中国电建集团成都勘测设计研究院有限公司 | Let out slot aerator structure |
| CN112609643A (en) * | 2020-12-21 | 2021-04-06 | 大连理工大学 | Aeration facility combining dovetail ridge and wedge-shaped groove |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |