CN109797721B - Water flow energy dissipation device - Google Patents
Water flow energy dissipation device Download PDFInfo
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- CN109797721B CN109797721B CN201910173988.4A CN201910173988A CN109797721B CN 109797721 B CN109797721 B CN 109797721B CN 201910173988 A CN201910173988 A CN 201910173988A CN 109797721 B CN109797721 B CN 109797721B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 114
- 230000021715 photosynthesis, light harvesting Effects 0.000 title claims abstract description 37
- 238000010521 absorption reaction Methods 0.000 claims abstract description 32
- 239000000463 material Substances 0.000 claims abstract description 7
- 230000008602 contraction Effects 0.000 claims description 37
- 230000000903 blocking effect Effects 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 230000007423 decrease Effects 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 238000010276 construction Methods 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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Abstract
The invention relates to a water flow energy dissipation device, and belongs to the field of hydraulic engineering. The invention comprises a water inlet slope, a stilling pool bottom plate, end sill, side walls and an energy dissipation unit; one end of the absorption tank bottom plate is connected with a water inlet slope, the other end of the absorption tank bottom plate is connected with end sill, side walls are arranged on two sides of the absorption tank bottom plate, and 3-5 energy dissipation units are arranged on the same horizontal plane between the two side walls. The energy dissipation device achieves the purpose of dissipating energy of water flow through self energy cancellation of the water flow; the structure is simple, the implementation is facilitated, the problem of overlong construction arrangement of a conventional stilling pool is solved, and the arrangement area of the stilling pool is reduced; the materials are easy to obtain and have good durability.
Description
Technical Field
The invention relates to a water flow energy dissipation device, and belongs to the field of hydraulic engineering.
Background
In a water conservancy and hydropower water discharge building, energy dissipation is a major task borne by the water discharge building, namely, when excessive flood is safely discharged, the flushing of the discharged water flow to a dam body and a downstream foundation pit is strictly controlled, and the dam body is prevented from being damaged and the dam foundation is prevented from being unstable. Especially for high water head and large flow flood discharge engineering, the problems of large flow velocity at the bottom of the bottom plate, large pulsating pressure, large impact protection difficulty, large size of the needed absorption basin, high manufacturing cost and the like exist, so that the research and engineering application of the energy absorption form have limitations. For the energy concentration of the downward drainage flow, the energy dissipation problem of the water flow with insufficient length of the absorption basin limited by boundary topography is solved, the energy dissipation difficulty is high, and the phenomenon of concentrated water flow impact force and surge occurs at the tail ridge. However, with the technical support of the present stage, the demand of the novel stilling pool is great.
Disclosure of Invention
The invention provides a water flow energy dissipation device which is used for dissipating energy of high-speed water flow.
The technical scheme of the invention is as follows: a water flow energy dissipation device comprises a water inlet slope 1, a stilling pool bottom plate 2, end sill, a side wall 8 and an energy dissipation unit;
One end of the absorption tank bottom plate 2 is connected with the water inlet slope 1, the other end of the absorption tank bottom plate 2 is connected with end sill, side walls 8 are arranged on two sides of the absorption tank bottom plate 2, and 3-5 energy dissipation units are arranged on the same horizontal plane between the two side walls.
The water inlet slope 1 can be provided in two forms, one is a plane slope and the other is a curved slope.
The thickness of the stilling pool bottom plate 2 is 0.3m-0.5m.
The end sill height is 0.7m, so that the depth of the pool is kept, and the residual energy of the end water is eliminated.
The energy dissipation unit comprises a flow distribution plate 4, a contraction section 5, a rotating shaft 6 and a water blocking blade 7, wherein the flow distribution plate 4 is arranged between two side walls on the upper side of the stilling pool bottom plate 2 and is parallel to the stilling pool bottom plate 2; the contraction section 5 is arranged between the absorption tank bottom plate 2 and the flow distribution plate 4, the wide initial end of the contraction section 5 is arranged close to the water inlet slope 1 end, and the narrow tail end of the contraction section 5 is arranged close to the end sill end; the rotating shaft 6 is arranged between the two side walls and is close to the narrow tail end of the contraction section 5, and the axis of the rotating shaft 6 is parallel to the flow dividing plate 4; the rotating shaft 6 is provided with a water baffle plate 7, and the water baffle plate 7 drives the rotating shaft 6 to rotate under the impact of water flow.
The width of the flow dividing plate 4 is 1.8m-5.6m, which is smaller than the width of the stilling pool; the distance between the splitter plate 4 and the stilling pool bottom plate 2 is 0.5m-0.7m which is less than half of the stilling pool depth.
The section shape of the contraction section 5 is rectangular, the height of the contraction section 5 is the distance between the absorption basin bottom plate 2 and the flow distribution plate 4, the width of the contraction section 5 gradually decreases from the wide starting end to the narrow end, the width at the wide starting end is largest, the width at the narrow end is 2m-6m, the width at the narrow end is smallest, and the width at the narrow end is 1.6m-4.8m.
The material of the rotating shaft 6 is Q235 steel, the diameter is 0.05m-0.1m, the number of the water retaining blades 7 on the rotating shaft 6 is 4-8, and the water retaining blades are uniformly arranged.
The height of the water baffle blade 7 is 0.4m-0.6m, which is smaller than the interval between the splitter plate 4 and the stilling pool bottom plate 2, and the width of the water baffle blade 7 is 1.8m-5.2m, which is not smaller than the width of the narrow tail end of the contraction section 5; the thickness of the water baffle 7 is 0.02m-0.03m.
The beneficial effects of the invention are as follows: the purpose of dissipating energy of the high-speed water flow is achieved through the self energy offset of the high-speed water flow; the structure is simple, the implementation is facilitated, the problem of overlong construction arrangement of a conventional stilling pool is solved, and the arrangement area of the stilling pool is reduced; the materials are easy to obtain and have good durability.
Drawings
FIG. 1 is a plan view of the device of the present invention;
FIG. 2 is a cross-sectional view of the device of the present invention;
the reference numerals in the figures are: 1-water inlet slope, 2-stilling pool bottom plate, 3-end sill, 4-flow dividing plate, 5-contraction section, 6-rotation shaft, 7-water baffle blade plate and 8-side wall.
Detailed Description
The invention will be further described with reference to the drawings and examples, but the invention is not limited to the scope.
Example 1: 1-2, a water flow energy dissipation device comprises a water inlet slope 1, a stilling pool bottom plate 2, end sill 3, a side wall 8 and an energy dissipation unit;
One end of the absorption tank bottom plate 2 is connected with the water inlet slope 1, the other end of the absorption tank bottom plate 2 is connected with end sill, side walls 8 are arranged on two sides of the absorption tank bottom plate 2, and 3 energy dissipation units are arranged on the same horizontal plane between the two side walls.
Further, the water inlet slope 1 may be provided in two forms, one is a planar slope and the other is a curved slope. In this embodiment a planar ramp is provided.
Further, the thickness of the stilling floor 2 may be set to 0.3m. The length of the stilling pool floor 2 is determined by the number of stilling units arranged.
Further, the end sill height can be set to be 0.7m, so that the depth of the pool is kept and the residual energy of the end water is eliminated.
Further, the energy dissipation unit comprises a flow distribution plate 4, a contraction section 5, a rotating shaft 6 and a water blocking blade 7, wherein the flow distribution plate 4 is arranged between two side walls on the upper side of the absorption basin bottom plate 2 and is parallel to the absorption basin bottom plate 2; the contraction section 5 is arranged between the absorption tank bottom plate 2 and the flow distribution plate 4, the wide initial end of the contraction section 5 is arranged close to the water inlet slope 1 end, and the narrow tail end of the contraction section 5 is arranged close to the end sill end; the rotating shaft 6 is arranged between the two side walls and is close to the narrow tail end of the contraction section 5, and the axis of the rotating shaft 6 is parallel to the flow dividing plate 4; the rotating shaft 6 is provided with a water baffle plate 7, and the water baffle plate 7 drives the rotating shaft 6 to rotate under the impact of water flow.
Further, the width of the splitter plate 4 can be set to be 1.8m, which is smaller than the width of the stilling pool; the distance between the splitter plate 4 and the stilling pool bottom plate 2 is 0.5m and is less than half of the stilling pool depth.
Further, the cross section of the constriction section 5 may be rectangular, the height of the constriction section 5 is the distance between the stilling pool bottom plate 2 and the flow dividing plate 4, the width of the constriction section 5 gradually decreases from the wide start end to the narrow end, the width at the wide start end is maximum, 2m is taken, the width at the narrow end is minimum, and 1.6m is taken.
Further, the material of the rotating shaft 6 can be Q235 steel, the diameter of the rotating shaft is 0.05m, and the number of the water retaining blades 7 on the rotating shaft 6 is 4 and the rotating shaft is uniformly arranged.
Further, the height of the water baffle 7 can be set to be 0.4m, which is smaller than the interval between the splitter plate 4 and the stilling pool bottom plate 2, and the width of the water baffle 7 is 1.8m, which is not smaller than the width of the narrow tail end of the contraction section 5; the thickness of the water baffle 7 is 0.02m.
Example 2: 1-2, a water flow energy dissipation device comprises a water inlet slope 1, a stilling pool bottom plate 2, end sill 3, a side wall 8 and an energy dissipation unit;
one end of the absorption tank bottom plate 2 is connected with the water inlet slope 1, the other end of the absorption tank bottom plate 2 is connected with end sill, side walls 8 are arranged on two sides of the absorption tank bottom plate 2, and 5 energy dissipation units are arranged on the same horizontal plane between the two side walls.
Further, the water inlet slope 1 may be provided in two forms, one is a planar slope and the other is a curved slope. In this embodiment, a curved slope is provided.
Further, the stilling floor 2 may be provided with a thickness of 0.5m. The length of the stilling pool floor 2 is determined by the number of stilling units arranged.
Further, the end sill height can be set to be 0.7m, so that the depth of the pool is kept and the residual energy of the end water is eliminated.
Further, the energy dissipation unit comprises a flow distribution plate 4, a contraction section 5, a rotating shaft 6 and a water blocking blade 7, wherein the flow distribution plate 4 is arranged between two side walls on the upper side of the absorption basin bottom plate 2 and is parallel to the absorption basin bottom plate 2; the contraction section 5 is arranged between the absorption tank bottom plate 2 and the flow distribution plate 4, the wide initial end of the contraction section 5 is arranged close to the water inlet slope 1 end, and the narrow tail end of the contraction section 5 is arranged close to the end sill end; the rotating shaft 6 is arranged between the two side walls and is close to the narrow tail end of the contraction section 5, and the axis of the rotating shaft 6 is parallel to the flow dividing plate 4; the rotating shaft 6 is provided with a water baffle plate 7, and the water baffle plate 7 drives the rotating shaft 6 to rotate under the impact of water flow.
Further, the width of the splitter plate 4 can be set to be 5.6m, which is smaller than the width of the stilling pool; the distance between the splitter plate 4 and the stilling pool bottom plate 2 is 0.7m and is less than half of the stilling pool depth.
Further, the cross section of the constriction section 5 may be rectangular, the height of the constriction section 5 is the distance between the stilling pool bottom plate 2 and the flow dividing plate 4, the width of the constriction section 5 gradually decreases from the wide start end to the narrow end, the width at the wide start end is maximum, 6m is taken, the width at the narrow end is minimum, and 4.8m is taken.
Further, the material of the rotating shaft 6 can be Q235 steel, the diameter of the rotating shaft is 0.1m, and the number of the water retaining blades 7 on the rotating shaft 6 is 8, so that the rotating shaft is uniformly arranged.
Further, the height of the water baffle 7 can be set to be 0.6m, which is smaller than the interval between the splitter plate 4 and the stilling pool bottom plate 2, and the width of the water baffle 7 is 5.2m, which is not smaller than the width of the narrow tail end of the contraction section 5; the thickness of the water baffle 7 is 0.03mm.
Example 3: 1-2, a water flow energy dissipation device comprises a water inlet slope 1, a stilling pool bottom plate 2, end sill 3, a side wall 8 and an energy dissipation unit;
One end of the absorption tank bottom plate 2 is connected with the water inlet slope 1, the other end of the absorption tank bottom plate 2 is connected with end sill, side walls 8 are arranged on two sides of the absorption tank bottom plate 2, and 3-5 energy dissipation units are arranged on the same horizontal plane between the two side walls. The energy dissipation capacity of the energy dissipation units is determined by the number of the energy dissipation units arranged in the energy dissipation pool, and the number of the energy dissipation units needed specifically can be changed by actual engineering.
Further, the water inlet slope 1 may be provided in two forms, one is a planar slope and the other is a curved slope. In this embodiment a planar ramp is provided.
Further, the thickness of the stilling pool floor 2 may be set to be 0.3m-0.5m. The specific size is determined by the actual conditions. The length of the stilling pool floor 2 is determined by the number of stilling units arranged.
Further, the end sill height can be set to be 0.7m, so that the depth of the pool is kept and the residual energy of the end water is eliminated. The specific size is determined by the actual conditions.
Further, the energy dissipation unit comprises a flow distribution plate 4, a contraction section 5, a rotating shaft 6 and a water blocking blade 7, wherein the flow distribution plate 4 is arranged between two side walls on the upper side of the absorption basin bottom plate 2 and is parallel to the absorption basin bottom plate 2; the contraction section 5 is arranged between the absorption tank bottom plate 2 and the flow distribution plate 4, the wide initial end of the contraction section 5 is arranged close to the water inlet slope 1 end, and the narrow tail end of the contraction section 5 is arranged close to the end sill end; the rotating shaft 6 is arranged between the two side walls and is close to the narrow tail end of the contraction section 5, and the axis of the rotating shaft 6 is parallel to the flow dividing plate 4; the rotating shaft 6 is provided with a water baffle plate 7, and the water baffle plate 7 drives the rotating shaft 6 to rotate under the impact of water flow.
Further, the width of the splitter plate 4 can be 1.8m-5.6m, which is smaller than the width of the stilling pool; the distance between the splitter plate 4 and the stilling pool bottom plate 2 is 0.5m-0.7m which is less than half of the stilling pool depth.
Further, the cross section of the constriction section 5 may be rectangular, the height of the constriction section 5 is the distance between the stilling pool bottom plate 2 and the flow dividing plate 4, the width of the constriction section 5 gradually decreases from the wide start end to the narrow end, the width at the wide start end is maximum, 2m-6m is taken, the width at the narrow end is minimum, and 1.6m-4.8m is taken.
Further, the material of the rotating shaft 6 can be Q235 steel, the diameter of the rotating shaft is 0.05m-0.1m, the number of the water retaining blades 7 on the rotating shaft 6 is 4-8, and the water retaining blades are uniformly arranged. The specific number of leaves is determined by the actual conditions.
Further, the height of the water baffle plate 7 can be set to be 0.4m-0.6m, which is smaller than the distance between the splitter plate 4 and the stilling pool bottom plate 2, and the width of the water baffle plate 7 can be set to be 1.8m-5.2m, which is not smaller than the width of the narrow tail end of the contraction section 5; the thickness of the water baffle 7 is 0.02m-0.03m.
The working principle of the invention is as follows: the high-speed water flow is discharged downwards and enters the bottom plate 2 of the stilling pool through the water inlet slope 1, then the high-speed water flow is divided into an upper layer and a lower layer by the flow dividing plate 4, the lower layer water flow is accelerated through the water inlet slope 1 and the contraction section 5 to impact on the water blocking blade plate 7, and meanwhile, the water blocking blade plate 7 is impacted by the lower layer water flow to rotate clockwise, and part of energy of the lower layer water flow is eliminated in the process; the rotating water baffle 7 hits the upper water flow on the upper side of the splitter plate 4, blocks the flow of the upper water flow, and eliminates part of energy of the upper water flow. The self energy of the water flow on the upper layer and the lower layer is counteracted, so that the purpose of energy dissipation of the water energy is achieved.
While the present invention has been described in detail with reference to the drawings, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (7)
1. The utility model provides a rivers energy dissipation device which characterized in that: comprises a water inlet slope (1), a stilling pool bottom plate (2), end sill (3), side walls (8) and an energy dissipation unit;
One end of the stilling pool bottom plate (2) is connected with the water inlet slope (1), the other end of the stilling pool bottom plate (2) is connected with end sill (3), side walls (8) are arranged on two sides of the stilling pool bottom plate (2), and 3-5 energy dissipation units are arranged on the same horizontal plane between the two side walls;
The water inlet slope (1) can be arranged in two forms, namely a plane slope and a curved slope;
The energy dissipation unit comprises a flow distribution plate (4), a contraction section (5), a rotating shaft (6) and a water blocking blade plate (7), wherein the flow distribution plate (4) is arranged between two side walls on the upper side of the absorption tank bottom plate (2) and is parallel to the absorption tank bottom plate (2); the contraction section (5) is arranged between the absorption tank bottom plate (2) and the flow distribution plate (4), the wide starting end of the contraction section (5) is arranged close to the end of the water inlet slope (1), and the narrow tail end of the contraction section (5) is arranged close to the end end sill (3); the rotating shaft (6) is arranged between the two side walls and is close to the narrow tail end of the contraction section (5), and the axis of the rotating shaft (6) is parallel to the flow dividing plate (4); the rotating shaft (6) is provided with a water blocking blade plate (7), and the water blocking blade plate (7) drives the rotating shaft (6) to rotate under the impact of water flow.
2. The water flow energy dissipating device of claim 1, wherein: the thickness of the stilling pool bottom plate (2) is 0.3m-0.5m.
3. The water flow energy dissipating device of claim 1, wherein: the height of end sill (3) is 0.7m, so that the depth of the pool is kept, and the residual energy of the end water is eliminated.
4. The water flow energy dissipating device of claim 1, wherein: the width of the flow dividing plate (4) is 1.8-5.6 m and is smaller than the width of the stilling pool; the distance between the splitter plate (4) and the stilling pool bottom plate (2) is 0.5m-0.7m which is less than half of the stilling pool depth.
5. The water flow energy dissipating device of claim 1, wherein: the section shape of the contraction section (5) is rectangular, the height of the contraction section (5) is the distance between the stilling pool bottom plate (2) and the flow distribution plate (4), the width of the contraction section (5) gradually decreases from the wide starting end to the narrow end, the width at the wide starting end is maximum, the width at the narrow end is 2m-6m, the width at the narrow end is minimum, and the width at the narrow end is 1.6m-4.8m.
6. The water flow energy dissipating device of claim 1, wherein: the material of the rotating shaft (6) is Q235 steel, the diameter of the rotating shaft is 0.05m-0.1m, and the number of the water retaining blades (7) on the rotating shaft (6) is 4-8, and the water retaining blades are uniformly arranged.
7. The water flow energy dissipating device of claim 1, wherein: the height of the water retaining blade plate (7) is 0.4m-0.6m, which is smaller than the distance between the flow dividing plate (4) and the bottom plate (2) of the stilling pool, and the width of the water retaining blade plate (7) is 1.8m-5.2m, which is not smaller than the width of the narrow tail end of the contraction section (5); the thickness of the water baffle blade plate (7) is 0.02m-0.03m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910173988.4A CN109797721B (en) | 2019-03-08 | 2019-03-08 | Water flow energy dissipation device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910173988.4A CN109797721B (en) | 2019-03-08 | 2019-03-08 | Water flow energy dissipation device |
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| Publication Number | Publication Date |
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| CN109797721A CN109797721A (en) | 2019-05-24 |
| CN109797721B true CN109797721B (en) | 2024-05-10 |
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| CN201910173988.4A Active CN109797721B (en) | 2019-03-08 | 2019-03-08 | Water flow energy dissipation device |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107459142A (en) * | 2017-10-12 | 2017-12-12 | 长沙理工大学 | A kind of ecological ground sills system and construction method for urban landscape rivers |
| RU2647895C1 (en) * | 2017-08-08 | 2018-03-21 | Михаил Иванович Голубенко | Water flow energy dampener |
| CN108385625A (en) * | 2018-03-19 | 2018-08-10 | 浙江水利水电学院 | Utilize the stilling pond auxiliary device of itself water energy energy dissipating |
| CN210194577U (en) * | 2019-03-08 | 2020-03-27 | 昆明理工大学 | Water flow energy dissipation device |
-
2019
- 2019-03-08 CN CN201910173988.4A patent/CN109797721B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2647895C1 (en) * | 2017-08-08 | 2018-03-21 | Михаил Иванович Голубенко | Water flow energy dampener |
| CN107459142A (en) * | 2017-10-12 | 2017-12-12 | 长沙理工大学 | A kind of ecological ground sills system and construction method for urban landscape rivers |
| CN108385625A (en) * | 2018-03-19 | 2018-08-10 | 浙江水利水电学院 | Utilize the stilling pond auxiliary device of itself water energy energy dissipating |
| CN210194577U (en) * | 2019-03-08 | 2020-03-27 | 昆明理工大学 | Water flow energy dissipation device |
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| CN109797721A (en) | 2019-05-24 |
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