CN214005620U - A steady flow state structure for in absorption basin - Google Patents
A steady flow state structure for in absorption basin Download PDFInfo
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- CN214005620U CN214005620U CN202022814548.3U CN202022814548U CN214005620U CN 214005620 U CN214005620 U CN 214005620U CN 202022814548 U CN202022814548 U CN 202022814548U CN 214005620 U CN214005620 U CN 214005620U
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- stilling pool
- grid
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- water
- grating
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- 238000010521 absorption reaction Methods 0.000 title description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 76
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 6
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000009194 climbing Effects 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
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Abstract
The utility model relates to the field of water conservancy devices, in particular to a stable flow state structure used in a stilling pool, which comprises a grid, wherein the grid is provided with through holes and is arranged at the bottom of the stilling pool; the grids comprise 7-shaped horizontal grids and vertical grids; the vertical grating is perpendicular to the water flow direction to block water flow, the bottom of the vertical grating is fixedly connected with the bottom of the stilling pool, and the top of the vertical grating extends towards the water inlet direction and is fixedly connected with the horizontal grating. The utility model discloses can effectively reduce the steady flow state of upwelling of rivers, reduce the velocity of flow.
Description
Technical Field
The utility model relates to a water conservancy device field specifically is a steady flow state structure for in absorption basin.
Background
From ancient human civilization, people build cities and develop along rivers and seas, and the people breed and grow on both sides of rivers, so that the needs of flood control, drainage, irrigation, shipping and urban water supply are generated, and the water conservancy project is created and developed. Energy dissipation is also required while utilizing water energy. The stilling pool is an energy dissipation facility which promotes the generation of underflow type hydraulic jump at the downstream of a water outlet structure. The stilling basin can quickly change the downward flow into the slow flow, generally can eliminate the kinetic energy of the downward flow by 40-70 percent, can shorten the length of the apron and is an effective and economic energy dissipation facility.
Traditional underflow energy dissipation requires a certain topography to meet the conditions for forced water jump, and the depth of the pool is restricted by the engineering geological conditions. In order to increase the energy dissipation capability of the stilling pool in an auxiliary manner, increase the service life of the stilling pool and the like, a grid structure is additionally arranged in the stilling pool.
Present grid structure is mostly vertical structure, can reduce to cross grid rivers ability, but upward gushes out the water suddenly the phenomenon very serious before the grid, has great disturbance to the rivers in the pond, causes great adverse effect to the energy dissipation effect of pond itself.
SUMMERY OF THE UTILITY MODEL
Problem to at present the pond grid that disappears, the utility model provides a steady flow state structure for in the pond that disappears realizes the interior rivers flow state of steady pond that disappears, the purpose of further energy dissipation.
The utility model provides a technical scheme as follows: a stable flow state structure used in a stilling pool comprises a grid, wherein a through hole is formed in the grid and is installed at the bottom of the stilling pool; the grids comprise 7-shaped horizontal grids and vertical grids; the vertical grating is perpendicular to the water flow direction to block water flow, the bottom of the vertical grating is fixedly connected with the bottom of the stilling pool, and the top of the vertical grating extends towards the water inlet direction and is fixedly connected with the horizontal grating.
Further, the bottom of the vertical grid is arranged in the middle 1/4-3/4 of the water inlet and the water outlet of the stilling pool.
Further, the bottom of the vertical grid is arranged in the middle 1/2 between the water inlet and the water outlet of the stilling pool.
Through a hydraulic model test, the grid is moved forwards to a position which is far from an inlet 1/4 of the stilling pool, although the flow state of water flow behind the grid is improved, the turbulence degree of the water flow in front of the grid and the height of an upwelling water bump are further increased, the impact effect of submerged jet on the grid is obviously enhanced, so that the turbulence of the water flow in front of the grid is intensified, the effect of the horizontal grid is reduced, the water bump is still obvious, the falling influence of the upwelling water bump is superposed by the water flow passing through the grid, the flow state is worsened, and the position length of the water flow which tends to be stable is increased.
The grid is moved to a position which is far away from the inlet 3/4 of the stilling pool, the height of the water burst is not obviously changed, the water flow behind the grid cannot be adjusted in time, the surging of the downstream tail water is aggravated, the water surface in front of the grid is in a climbing shape, the part of the water is in a remote-drive water jump shape, partial kinetic energy of the jet flow is consumed in the water body in the pool, the water flow passing the grid is relatively stable, but the cross section does not appear in the stilling pool after the jump, and the adverse effect is caused to the downstream tail water.
The grid is arranged at the position 1/2 in the middle of the stilling pool, the submerged jet water flow is blocked by the vertical grid, and as with the vertical grid, the submerged jet water flow rolling towards the inlet of the stilling pool can be formed, and the submerged jet water flow are mutually rubbed, mixed and sheared, so that the water flow turbulence is large; meanwhile, due to the action of the horizontal grating, the upwelling water burst phenomenon basically disappears, and a certain submergence can be formed in the stilling pool; turbulence of water flow behind the grid is reduced, the disturbance length behind the grid is nearly 250mm, the water flow tends to be stable, and the connection with downstream tail water is good.
Further, the area of the through holes accounts for 20% -30% of the area of the grating.
Furthermore, the horizontal grids are 100-120mm long, the vertical grids are 120mm high, and the thicknesses of the vertical grids are 5-15 mm.
Further, the width of the grid is consistent with that of the stilling pool.
Further, the horizontal grids and the vertical grids are integrally cast and formed, and strength is improved.
Compared with the prior art, the utility model discloses an advantage part does:
1. the grid is designed to be 7, water flows to the grid after entering the stilling pool, the horizontal grid reduces the upwelling steady flow state of the water, and the vertical grid reduces the flow velocity of the water.
2. The bottom of the vertical grid is arranged at 1/2 between the water inlet and the water outlet of the stilling basin, so that the energy of the incident water body can be reduced by using the water body in front of the grid, the water depth of the section after jumping can be objectively reduced, smooth connection with the downstream water flow is realized, and energy dissipation is effectively realized.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the present invention in use;
1 horizontal grid, 2 through holes, 3 vertical grids, 4 grids and 5 stilling pools.
Detailed Description
For a better understanding of the technical solutions of the present technology, the present technology is described in detail below with reference to the accompanying drawings, and the description of the present technology is only exemplary and explanatory, and should not be construed as limiting the scope of the present technology in any way.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
It should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings or orientations or positional relationships that are conventionally placed when the products of the art are used, and are used only for convenience in describing the technology and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the technology.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present technology, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present technology can be understood in a specific case to those of ordinary skill in the art.
As shown in FIG. 1, a stable flow state structure for a stilling pool comprises a grid 4, wherein a through hole 2 is formed in the grid 4 and is arranged at the bottom of the stilling pool 5; the grating 4 comprises a horizontal grating 1 and a vertical grating 3 which are in a 7 shape; the vertical grating 3 is perpendicular to the water flow direction and blocks water flow, the bottom of the vertical grating is fixedly connected with the bottom of the stilling pool 5, and the top of the vertical grating extends towards the water inlet direction and is fixedly connected with the horizontal grating 1.
Further, the bottom of the vertical grid 3 is arranged in the middle 1/2 between the water inlet and the water outlet of the stilling pool.
Preferably, the area of the through holes 2 accounts for 20% -30% of the area of the grid 4.
Preferably, the horizontal grids 1 are 110mm long, the vertical grids 3 are 110mm high, and the thickness of each grid is 10 mm.
Preferably, the width of the grid 4 is consistent with that of the stilling pool 5.
Preferably, the horizontal grating 1 and the vertical grating 3 are integrally cast and formed, so that the strength is increased.
As shown in fig. 2, after the grid 4 is installed in the stilling pool 5 as required, water flows from the water inlet to the water outlet of the stilling pool 5, the submerged water flow is blocked by the vertical grid 3 to form a back-submerged water flow rolling towards the inlet of the stilling pool 5, and the back-submerged water flow rubs, mixes and shears the submerged water flow and the submerged water flow, so that the water flow turbulence is large; meanwhile, due to the action of the horizontal grating 1, the upwelling water burst phenomenon basically disappears, and the stilling pool 5 can be submerged to a certain extent; the turbulence of the water flow is reduced after passing through the grating 4, the water flow tends to be stable, and the energy dissipation effect is achieved.
It should be noted that there are no specific structures in the above description, and it will be apparent to those skilled in the art that various modifications, decorations, or changes can be made without departing from the technical principles of the present invention; such modifications, variations, or combinations, or applying the concepts and solutions of the technology directly to other applications without further modifications, are intended to be within the scope of the present technology.
Claims (7)
1. A stable flow state structure used in a stilling pool comprises a grid and is characterized in that the grid is provided with a through hole and is arranged at the bottom of the stilling pool; the grids comprise 7-shaped horizontal grids and vertical grids; the vertical grating is perpendicular to the water flow direction to block water flow, the bottom of the vertical grating is fixedly connected with the bottom of the stilling pool, and the top of the vertical grating extends towards the water inlet direction and is fixedly connected with the horizontal grating.
2. The smooth flow structure for a stilling pool as set forth in claim 1, wherein: the bottom of the vertical grid is arranged in the middle of the water inlet and the water outlet of the stilling pool 1/4-3/4.
3. The smooth flow structure for a stilling pool as set forth in claim 1, wherein: the bottom of the vertical grid is arranged in the middle 1/2 of the water inlet and the water outlet of the stilling pool.
4. The smooth flow structure for a stilling pool as set forth in claim 1, wherein: the area of the through holes accounts for 20% -30% of the area of the grating.
5. The smooth flow structure for a stilling pool as set forth in claim 1, wherein: the horizontal grids are 100-120mm long, the vertical grids are 100-120mm high, and the thicknesses are 5-15 mm.
6. The smooth flow structure for a stilling pool as set forth in claim 1, wherein: the width of the grating is consistent with that of the stilling pool.
7. The smooth flow structure for a stilling pool as set forth in claim 1, wherein: the horizontal grating and the vertical grating are integrally cast and molded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022814548.3U CN214005620U (en) | 2020-11-30 | 2020-11-30 | A steady flow state structure for in absorption basin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022814548.3U CN214005620U (en) | 2020-11-30 | 2020-11-30 | A steady flow state structure for in absorption basin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214005620U true CN214005620U (en) | 2021-08-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022814548.3U Expired - Fee Related CN214005620U (en) | 2020-11-30 | 2020-11-30 | A steady flow state structure for in absorption basin |
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| CN (1) | CN214005620U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114351663A (en) * | 2022-01-07 | 2022-04-15 | 新疆水利水电科学研究院 | Grid type novel stilling pool |
-
2020
- 2020-11-30 CN CN202022814548.3U patent/CN214005620U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114351663A (en) * | 2022-01-07 | 2022-04-15 | 新疆水利水电科学研究院 | Grid type novel stilling pool |
| CN114351663B (en) * | 2022-01-07 | 2023-03-28 | 新疆水利水电科学研究院 | Grid type novel stilling pool |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210820 |