CN217419539U - Separate rivers structure suitable for river course type diversion forebay - Google Patents
Separate rivers structure suitable for river course type diversion forebay Download PDFInfo
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- CN217419539U CN217419539U CN202220354221.9U CN202220354221U CN217419539U CN 217419539 U CN217419539 U CN 217419539U CN 202220354221 U CN202220354221 U CN 202220354221U CN 217419539 U CN217419539 U CN 217419539U
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Abstract
The utility model provides a water flow separating structure suitable for a river channel type diversion forebay, which comprises a water-separating pier wall, a gradual change section and a diversion pier; one end of the waterproof pier wall is close to the reserved rock ridge between the 2 water inlet/outlet ports, the other end of the waterproof pier wall is connected with the transition section, and the other end of the transition section is connected with the flow dividing pier. The utility model discloses a separate rivers structure in the anterior setting of inlet outlet, better solution the regional problem that low water level produced the swirl when the operating mode of influent stream of river course type diversion forebay, avoid having reduced the engineering investment to the regional excessive excavation of forebay, improved the electricity generation benefit.
Description
Technical Field
The utility model relates to a separate rivers structure suitable for river course type diversion front pool is applicable to hydraulic and hydroelectric engineering.
Background
The flow pattern of water flow at the water inlet/outlet of the pumped storage power station is often complex. If the front of the water inlet/outlet is just a river channel type large-turning water diversion open channel, the water surface width of the forebay area is narrow, the water flows among the 2 single water inlet/outlet are easy to mutually influence, the inflow working condition is easy to generate vortex, and the problem is more prominent particularly at low water level. The suction vortex is generated at a low water level, so that the operation of the hydropower station is limited to a certain extent, and the power generation benefit is influenced.
In order to solve the above problems, some measures are taken by engineering builders in actual production. One solution is to add a row of vortex breaking beams to the existing row of vortex breaking beams in the water inlet/outlet vortex breaking beam section. The scheme can effectively solve the vortex right above and near the vortex-preventing section, but cannot play a great role in the vortex of the forebay area caused by insufficient congenital terrains such as long open channels, large turns and the like. The other scheme is to expand and dig the river channel in the forebay area, widen the river channel as much as possible, increase the water surface area of the forebay area of the water inlet and outlet, and reduce the mutual influence between the monomer water inlet and outlet.
Disclosure of Invention
The to-be-solved technical problem of the utility model is: aiming at the problems existing in the prior art, the diversion and water flow isolating structure is provided, so that the problem that the river channel type and large-turning diversion open channel region generates vortexes is solved to a certain extent, the operation of a power station at a low water level is ensured, and the power generation benefit of the power station is ensured.
The utility model adopts the technical proposal that: a water flow separating structure suitable for a river channel type diversion forebay is characterized by comprising a water-resisting pier wall, a gradual change section and a flow-dividing pier; one end of the waterproof pier wall is close to the reserved rock ridge between the 2 water inlet/outlet ports, the other end of the waterproof pier wall is connected with the transition section, and the other end of the transition section is connected with the flow dividing pier.
On the basis of adopting above-mentioned technical scheme, the utility model discloses still can adopt following further technical scheme, or to these further technical scheme combined use:
the section of the waterproof pier wall is isosceles trapezoid; the height of the isosceles trapezoid is the height difference from the reservoir dead water level to the front pool bottom plate, the bottom width is the same as the height of the isosceles trapezoid, and the top width is half of the bottom width.
The cross section of the flow dividing pier is semicircular.
The transition section is located between water-proof pier wall and the shunting pier and is smoothly connected with the two end structures.
The water-proof pier wall and the inner part of the transition section are pre-buried and communicated with the water pipe, and the communicated water pipe (4) is used for communicating the water-proof pier wall with the flow passages on the two sides of the transition section.
And the outer surface of the flow distribution pier is externally coated with a steel plate.
The embedded joint bars at the bottoms of the water-proof pier wall, the transition section and the diversion pier are embedded, and the bottom ends of the joint bars extend into the forebay bottom plate.
The beneficial effects of the utility model are that: the utility model discloses a separate the rivers structure in the anterior setting of inlet outlet, better solution the regional problem that the low water level produced the swirl when the operating mode of influent stream of river course type diversion forebay, avoid the regional excessive excavation of forebay, reduced the engineering investment, improved the electricity generation benefit.
Drawings
Fig. 1 is a schematic plan view of the embodiment.
Fig. 2 is a schematic cross-sectional structure view of a water-stop pier wall in the embodiment.
Fig. 3 is a schematic longitudinal section structure of the water-stop pier wall, the transition section and the diversion pier in the embodiment.
Fig. 4 is an enlarged view of the flow diversion pier of fig. 1.
Fig. 5 is a sectional view a-a in fig. 4.
In the figure: 1. a waterproof pier wall; 2. a transition section; 3. a flow dividing pier; 4. the water pipe is communicated; 5. wrapping a steel plate; 6. a forebay floor; 7. a water inlet/outlet; 8. reserving a rock ridge; 9. and (6) inserting the ribs.
Detailed Description
The embodiment is a water flow separating structure suitable for being built in a riverway type water diversion forebay area, and the structure is provided with a water-proof pier wall 1, a gradual change section 2 and a flow dividing pier 3.
In this embodiment, one end of the waterproof pier wall 1 abuts against the reserved rock ridge 8 between the 2 water inlets/outlets 7, the other end of the waterproof pier wall is connected with the transition section 2, and the other end of the transition section 2 is connected with the flow dividing pier 3.
The section of the waterproof pier wall 1 in this embodiment is an isosceles trapezoid. The height of the isosceles trapezoid is the height difference from the reservoir dead water level to the front pool bottom plate 6, the bottom width is the same as the height of the isosceles trapezoid, and the top width is half of the bottom width. The transition section 2 is located between the waterproof pier wall 1 and the diversion pier 3 and is smoothly connected with the structures on the two sides. The cross section of the flow pier 3 is semicircular, in this embodiment, the radius of the circle is 1.5m, and the height h of the flow pier 3 is 3 m.
In this embodiment, the water-proof pier wall 1 and the gradual change section 2 are internally embedded with the communicating water pipe 4, the communicating water pipe 4 communicates the flow passages on two sides of the water-proof pier wall 1 and the gradual change section 2, the inner diameter of the communicating water pipe 4 is 10cm, and the interval row distance is 4m × 4 m.
The outer surface of the flow dividing pier 3 is externally coated with a steel plate 5 in the embodiment. The clad steel plate 5 is made of Q235A and has a wall thickness of 12 mm.
In this embodiment, water proof pier wall 1, gradual change section 2 and the pre-buried dowel bar 9 in reposition of redundant personnel pier bottom 3 portion, the dowel bar 9 bottom is stretched into forebay bottom plate 6.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A water flow separating structure suitable for a river channel type diversion forebay is characterized by comprising a water-proof pier wall (1), a transition section (2) and a diversion pier (3); one end of the waterproof pier wall (1) is close to a reserved sill (8) between the 2 water inlet/outlet ports (7), the other end of the waterproof pier wall is connected with the transition section (2), and the other end of the transition section (2) is connected with the flow dividing pier (3).
2. The water flow separating structure suitable for the river channel type diversion forebay according to claim 1, wherein the section of the water-resisting pier wall (1) is an isosceles trapezoid; the height of the isosceles trapezoid is the height difference from the reservoir dead water level to the front pool bottom plate (6), the bottom width is the same as the height of the isosceles trapezoid, and the top width is half of the bottom width.
3. The structure of water flow separation for a front basin of river channel type according to claim 1, characterized in that the cross section of the diversion pier (3) is semicircular.
4. The structure of claim 1, wherein the transition section (2) is located between the water-resisting pier wall (1) and the flow-dividing pier (3) and is smoothly connected with the structures at the two ends.
5. The water flow separating structure suitable for the river channel type water diversion forebay according to claim 1, wherein the water-resisting pier wall (1) and the transition section (2) are internally embedded with communicating water pipes (4), and the communicating water pipes (4) communicate the water-resisting pier wall with the flow channels on the two sides of the transition section.
6. The structure for dividing water flow suitable for the river channel type diversion forebay according to claim 3, characterized in that the outer surface of the diversion pier (3) is coated with a steel plate (5).
7. The water flow separating structure suitable for the river channel type diversion forebay according to claim 1, wherein the bottom of the water-resisting pier wall (1), the transition section (2) and the diversion pier (3) is embedded with a dowel (9), and the bottom end of the dowel (9) extends into the forebay bottom plate (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220354221.9U CN217419539U (en) | 2022-02-22 | 2022-02-22 | Separate rivers structure suitable for river course type diversion forebay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220354221.9U CN217419539U (en) | 2022-02-22 | 2022-02-22 | Separate rivers structure suitable for river course type diversion forebay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217419539U true CN217419539U (en) | 2022-09-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220354221.9U Active CN217419539U (en) | 2022-02-22 | 2022-02-22 | Separate rivers structure suitable for river course type diversion forebay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217419539U (en) |
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2022
- 2022-02-22 CN CN202220354221.9U patent/CN217419539U/en active Active
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