Shaft structure communicated with release structures and flood discharge method
A technology for drainage structures and shafts, which can be used in construction, water conservancy projects, marine engineering, etc., and can solve problems such as single drainage structures and side wall cavitation damage.
Active Publication Date: 2015-09-09
POWERCHINA ZHONGNAN ENG
View PDF9 Cites 4 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] For discharge structures with high flow head (such as flood discharge tunnels, vent holes, and bottom holes), when the outlet flow velocity is greater than 30m / s, the possibility of water flow causing cavitation damage to the side wall is relatively high, so the shaft type is generally suitable for Drainage structure with low flow head, and only suitable for single drainage structure
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0028] A shaft structure connected to drainage structures, such as figure 1 As shown, the shaft structure of this embodiment includes a shaft 2, and the shaft 2 is provided with three vortex chambers 21, three vortex wells 22 and one stilling shaft 23 in sections at different elevations; each stage of the vortex chamber 21 The lower end communicates with the upper end of the vortex well 22, and the diameter of the lower end of the vortex well 22 is smaller than the diameter of the upper end, and is in the shape of an inverted cone; , flood discharge tunnel 12, vent hole or bottom hole 13 are communicated; the lower end of the bottom vortex well 22 is communicated with the stilling well 23, and is communicated with the diversion tunnel 3; The diversion tunnel 3 is connected with the downstream canal.
[0029] In summary, the vertical shaft of the present invention is provided with multi-stage vortex chambers and vortex wells in sections at different elevations, and the vortex ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a shaft structure communicated with release structures and a flood discharge method. The shaft structure comprises a shaft, multiple stages of release structures and a diversion tunnel communicated with a downstream graff. The shaft comprises multiple stages of volute chamber and volute well units vertically communicated in series and a dissipation well. The volute chamber and volute well unit on each stage comprises a volute chamber and a volute well communicated with the bottom end of the volute chamber, the bottom end of the volute well of the last-stage volute chamber and volute well unit of every two adjacent stages of volute chamber and volute well units is communicated with the top end of the volute chamber of the next-stage volute chamber and volute well unit of every two adjacent stages of volute chamber and volute well units, and the bottom end of the volute well of the lowest-stage volute chamber and volute well unit is communicated with the dissipation well and the diversion tunnel. The release structure on each stage is communicated with the volute chamber of the volute chamber and volute well unit of the corresponding stage. By means of the shaft structure, the shaft is suitable for the release structures with high-flow-speed water heads, the release structures share one shaft, and therefore the problems of flood discharge and energy dissipation of a tunnel spillway or an emptying tunnel or an underport and other release structures with the high-speed kinetic heads are solved.
Description
technical field [0001] The invention relates to the field of flood discharge and energy dissipation of water conservancy and hydropower projects, in particular to a shaft structure and a flood discharge method connected to discharge structures. Background technique [0002] The diversion tunnel is a drainage structure used in many water conservancy and hydropower projects during the construction period. In order to make the diversion tunnel play a permanent role after the completion of the project, engineers and technicians have carried out a lot of research work. More and more projects choose to rebuild the diversion tunnel as a part of the spillway, spillway, vent hole or bottom hole, and the basic types of reconstruction are mainly dragon head type and shaft type. [0003] The shaft type is a structural type that uses a vertical shaft to connect the upper spillway, spillway, vent hole or bottom hole with the lower diversion hole. Guided by the vortex chamber arranged on ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): E02B8/06
Inventor 戴晓兵
Owner POWERCHINA ZHONGNAN ENG