CN203977378U - A kind of shaft spillway - Google Patents
A kind of shaft spillway Download PDFInfo
- Publication number
- CN203977378U CN203977378U CN201420427492.8U CN201420427492U CN203977378U CN 203977378 U CN203977378 U CN 203977378U CN 201420427492 U CN201420427492 U CN 201420427492U CN 203977378 U CN203977378 U CN 203977378U
- Authority
- CN
- China
- Prior art keywords
- communicated
- water
- break tunnel
- power
- disappears
- 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.)
- Withdrawn - After Issue
Links
Abstract
The utility model discloses a kind of shaft spillway, comprise overflow weir, described overflow weir bottom is connected with vertical shaft top by changeover portion, and described silo bottom is connected with the power well top that disappears, described in power well one side that disappears be communicated with water-break tunnel; In the described power of disappearing well, be provided with communicating pipe, comprise horizontal segment and vertical section of being communicated with described horizontal segment described communicating pipe, described horizontal segment with described in the power bottom that disappears be communicated with, described vertical section is communicated with the import of described water-break tunnel; Described changeover portion is all communicated with outside by ventilating pipe with described water-break tunnel.The utility model can be guaranteed the safety of water-break tunnel concrete structure, makes the flow-shape steady and smooth in water-break tunnel simultaneously.
Description
Technical field
The utility model relates to the flood-discharge energy-dissipating field of Hydraulic and Hydro-Power Engineering shaft spillway, particularly a kind of shaft spillway.
Background technology
Shaft spillway is for the flood-discharge energy-dissipating of Hydraulic and Hydro-Power Engineering, and as shown in Figure 1, its chief component is: overflow weir 1, changeover portion 2, vertical shaft 3, the power that disappears well 4 and water-break tunnel 5.Water-break tunnel is connected with vertical shaft (or the power well that disappears).
The current of shaft spillway, through overflow weir, form high-velocity flow in overflow weir curve lower end; High-velocity flow departs from shaft wall at changeover portion, and freely fall in vertical shaft cavity, in falling process, occurring shear and entrainment effect with air, a large amount of gas of carrying under one's arms is injected in the water body in the power well that disappears, cause fierce collision, shearing and blending, a large amount of energy of stopping disappears; Current turn to and enter water-break tunnel in the mode of pressure flow or free flow in vertical shaft (or the power well that disappears), then flow into downstream rivers and canals.
The current that freely fall in vertical shaft entrainment aeration, and foam-like is creamy white.Current are injected at a high speed the power well that disappears, and bump with the water body in the power well that disappears, and produce strong sharply spatter and launch, and water surface rolling springs up, and in the power that disappears well, current form the vortex movement of large scale.The top that the sharp water body that spatters and launch bounces water-break tunnel import section, brings adverse influence to top, hole concrete structure.The current that spring up when rolling turn to while entering water-break tunnel in the mode of free flow, and the flow-shape in water-break tunnel is extremely unstable.Therefore, in order to ensure the safety of water-break tunnel concrete structure, make the flow-shape steady and smooth in water-break tunnel simultaneously, in shaft spillway, need to have a kind of structure of stationary flow fluidised form.
Summary of the invention
Technical problem to be solved in the utility model is, not enough for prior art, and a kind of shaft spillway is provided, and guarantees the safety of water-break tunnel concrete structure, makes the flow-shape steady and smooth in water-break tunnel simultaneously.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of shaft spillway, comprise overflow weir, and described overflow weir bottom is connected with vertical shaft top by changeover portion, described silo bottom is connected with the power well top that disappears, described in power well one side that disappears be communicated with water-break tunnel; In the described power of disappearing well, be provided with communicating pipe, comprise horizontal segment and vertical section of being communicated with described horizontal segment described communicating pipe, described horizontal segment with described in the power bottom that disappears be communicated with, described vertical section is communicated with the import of described water-break tunnel; Described changeover portion is all communicated with outside by ventilating pipe with described water-break tunnel.
Described water-break tunnel import top is communicated with outside by ventilating pipe, and ventilating pipe can discharge the bubble that overflow aerated flow inside better, further guarantees the flow-shape steady and smooth in water-break tunnel.
The ventilating pipe being communicated with described changeover portion, the ventilating pipe intercommunication being communicated with described water-break tunnel, easy construction.
Compared with prior art, the beneficial effect that the utility model has is: the utility model arranges communicating pipe in the power that the disappears well of shaft spillway, communicating pipe occurs separated by the import of water-break tunnel with current Ji Jian district in the plane, thereby avoid swashing the body that dabbles and bounce water-break tunnel top, guaranteed the safety of water-break tunnel concrete structure; The current that rolling springs up are through the adjustment of communicating pipe, and current can turn to reposefully and enter water-break tunnel, thereby have improved the flow-shape in water-break tunnel, make the flow-shape steady and smooth in water-break tunnel; When the current of water-break tunnel are flowed and changed into pressure flow when moving by free flow, the ventilating pipe being communicated with changeover portion can be to tonifying Qi in vertical shaft, the ventilating pipe being communicated with water-break tunnel top can discharge the bubble that overflow aerated flow inside, further guarantees the flow-shape steady and smooth in water-break tunnel.
Accompanying drawing explanation
Fig. 1 is existing shaft spillway sectional view;
Fig. 2 is the utility model one embodiment sectional view.
The specific embodiment
As shown in Figure 2, the utility model one embodiment comprises overflow weir 1, and described overflow weir 1 bottom is connected with vertical shaft 3 tops by changeover portion 2, and described vertical shaft 3 bottoms are connected with power well 4 tops that disappear, described in power well 4 one sides that disappear be communicated with water-break tunnel 5; In the described power of disappearing well 4, be provided with communicating pipe 6, comprise horizontal segment and vertical section of being communicated with described horizontal segment described communicating pipe 6, described horizontal segment with described in power well 4 bottoms that disappear be communicated with, described vertical section is communicated with described water-break tunnel 5 imports; Described changeover portion 2 is all communicated with outside by ventilating pipe 7 with described water-break tunnel 5 imports.
In the utility model, shaft spillway import adopts ring-like overflow weir, ring-like diameter 4m, and weir crest upstream curve is 1/4 circular curve, weir crest downstream is 1/4 elliptic curve; Changeover portion 2 adopts flaring mode to be connected with vertical shaft 3; Vertical shaft adopts the Circular Shaft that internal diameter is 3m; Silo bottom is established the power well 4 that disappears; It is the circular pipe of 2m that the horizontal segment of communicating pipe 6 and vertically section all adopt internal diameter; Vertical section of water-break tunnel 5 and communicating pipe is communicated with, the Bottom Altitude ratio of the water-break tunnel import high 4m of power well shaft bottom elevation that disappears, and water-break tunnel is gateway opening type structure; Ventilating pipe 7 is communicated with changeover portion lower end and water-break tunnel import top respectively, and ventilating pipe 7 upper ends communicate with atmosphere, and ventilating pipe internal diameter is 0.5m.
Claims (3)
1. a shaft spillway, comprise overflow weir (1), described overflow weir (1) bottom is connected with vertical shaft (3) top by changeover portion (2), be connected with power well (4) top that disappears bottom described vertical shaft (3), described in power well (4) one sides that disappear be communicated with water-break tunnel (5); It is characterized in that, in the described power of disappearing well (4), be provided with communicating pipe (6), comprise horizontal segment and vertical section of being communicated with described horizontal segment described communicating pipe (6), described horizontal segment with described in power well (4) bottom that disappears be communicated with, described vertical section is communicated with described water-break tunnel (5) import; Described changeover portion (2) is all communicated with outside by ventilating pipe (7) with described water-break tunnel (5).
2. shaft spillway according to claim 1, is characterized in that, the top of described water-break tunnel (5) import is communicated with outside by ventilating pipe (7).
3. shaft spillway according to claim 1 and 2, is characterized in that, the ventilating pipe being communicated with described changeover portion (2), the ventilating pipe intercommunication being communicated with described water-break tunnel (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420427492.8U CN203977378U (en) | 2014-07-31 | 2014-07-31 | A kind of shaft spillway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420427492.8U CN203977378U (en) | 2014-07-31 | 2014-07-31 | A kind of shaft spillway |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203977378U true CN203977378U (en) | 2014-12-03 |
Family
ID=51974836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420427492.8U Withdrawn - After Issue CN203977378U (en) | 2014-07-31 | 2014-07-31 | A kind of shaft spillway |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203977378U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104088259A (en) * | 2014-07-31 | 2014-10-08 | 中国电建集团中南勘测设计研究院有限公司 | Vertical shaft spillway |
| CN107268547A (en) * | 2017-07-24 | 2017-10-20 | 重庆交通大学 | Karst funnel reservoir and its flood releasing structure and construction method |
| CN107503331A (en) * | 2017-07-24 | 2017-12-22 | 重庆交通大学 | Karst funnel reservoir and its well formula flood releasing structure and construction method |
-
2014
- 2014-07-31 CN CN201420427492.8U patent/CN203977378U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104088259A (en) * | 2014-07-31 | 2014-10-08 | 中国电建集团中南勘测设计研究院有限公司 | Vertical shaft spillway |
| CN104088259B (en) * | 2014-07-31 | 2015-11-04 | 中国电建集团中南勘测设计研究院有限公司 | A kind of shaft spillway |
| CN107268547A (en) * | 2017-07-24 | 2017-10-20 | 重庆交通大学 | Karst funnel reservoir and its flood releasing structure and construction method |
| CN107503331A (en) * | 2017-07-24 | 2017-12-22 | 重庆交通大学 | Karst funnel reservoir and its well formula flood releasing structure and construction method |
| CN107268547B (en) * | 2017-07-24 | 2020-02-14 | 重庆交通大学 | Karst funnel reservoir and flood discharge building and construction method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203977378U (en) | A kind of shaft spillway | |
| CN204570628U (en) | The fairing that a kind of pumping plant is combined | |
| CN205196548U (en) | Water conservancy sprinkling irrigation equipment | |
| CN102966082A (en) | Aeration facility with downward-bent base slab | |
| CN204544496U (en) | The discharging device of hollow water curtain can be formed | |
| CN2915940Y (en) | Curved aerated chute | |
| CN203411957U (en) | Aerification device used for flood discharge deep hole | |
| CN202039329U (en) | Dividing pier structure capable of eliminating the water ring at tail part of sluice pier | |
| CN102787588A (en) | Shaft with vertical eddy-flow energy dissipaters of hole stoppers | |
| CN104088259B (en) | A kind of shaft spillway | |
| CN202441680U (en) | Anti-vortex device | |
| CN204147762U (en) | A kind of circulating fluid bed flue-gas desulfurizing device adopting special-shaped many venturi | |
| CN204602449U (en) | A kind of air bubble spiral nozzle | |
| CN203808031U (en) | Sealed type hydropower station pressure regulating chamber | |
| CN105220663B (en) | Stilling well for connecting vertical shaft with recession tunnel | |
| CN103321189B (en) | A kind of gate top overflow air ventilation shock-proof apparatus and method | |
| CN204717076U (en) | A kind of reduction valve | |
| CN204738277U (en) | High altitude localities is moved water and is opened and close plane gate gate slot | |
| CN203087266U (en) | Fish hatching ring channel | |
| CN204825776U (en) | Water conservancy diversion separates stream dyke | |
| CN203821342U (en) | Local hollow bottom plate shrinkage-type energy dissipator | |
| CN205088647U (en) | Power that disappears well of connecting shaft and water -break tunnel | |
| CN202876642U (en) | Device for preventing siphonage of thionizer overflow pipe | |
| CN203034540U (en) | Bubbling water-saving water nozzle | |
| CN204225066U (en) | Hydropower station tail water gate in surge chamber hole doubles as impedance pore structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141203 Effective date of abandoning: 20151104 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |