CN220598374U - Flat water tank applied in fishway - Google Patents
Flat water tank applied in fishway Download PDFInfo
- Publication number
- CN220598374U CN220598374U CN202322242602.5U CN202322242602U CN220598374U CN 220598374 U CN220598374 U CN 220598374U CN 202322242602 U CN202322242602 U CN 202322242602U CN 220598374 U CN220598374 U CN 220598374U
- Authority
- CN
- China
- Prior art keywords
- fishway
- weir body
- baffle plate
- folding
- line weir
- 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.)
- Active
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 53
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 9
- 238000012544 monitoring process Methods 0.000 abstract description 3
- 241000251468 Actinopterygii Species 0.000 description 4
- 208000034699 Vitreous floaters Diseases 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Classifications
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/60—Ecological corridors or buffer zones
Landscapes
- Farming Of Fish And Shellfish (AREA)
Abstract
A flat water tank applied in a fishway belongs to the field of hydraulic engineering. Comprising the following steps: the broken line weir body bends the short baffle plate and the outflow drain hole; the folding line weir body is arranged at the upstream of the folding short baffle plate, one end of the folding line weir body is connected to the folding short baffle plate, and the other end of the folding line weir body is connected to the fishway side wall; the bottom of the cavity formed by the broken line weir body and the bent short baffle plate is connected with an outflow drain hole; the function of the overflow weir water-flattening groove is integrated on the fishway short retaining wall body, so that the fishway short retaining wall has the function of automatically adjusting the extra water head difference between fishway pool chambers; in particular when the monitoring system is not adequately covered, the flat water tank can still function.
Description
Technical Field
The utility model relates to a water leveling tank applied to a fishway, belongs to the construction of fish passing facilities of hydraulic and hydroelectric engineering, and particularly relates to a water leveling tank for helping the fishway to control the upstream water level.
Background
The biggest problem encountered in the operation of the baffle-type fishway is as follows: when objects such as branches in water block the vertical seams of the fishway or the passage of the overflow holes. The water level in the upstream pool chamber is raised, the water level in the downstream pool chamber is lowered, and the water level difference between the adjacent pool chambers is increased due to the blocking of the normal passage of water flow. Sometimes, the water level difference between adjacent cells is increased due to the accumulation and the unsatisfied construction quality.
In the prior art, such problems are typically accomplished by closing the fishway gate to service the fishway. But this can have a significant effect on the fish passage time of the fishway. The total fish passing time of a fish passing season is affected. And the problem of increased water head between adjacent cells cannot be quickly detected. Unless the individual cells are constantly monitored for water level. In all the established fishways in the current stage, no fishway has the whole-course water level monitoring, that is, the existing fishway can not find the change of the water level of the fishway, and the problem of the increase of the water level difference can not be solved.
Disclosure of Invention
The utility model discloses a flat water tank applied to a fishway, which aims to: when the upstream side cell water level exceeds the design criteria, the high water level may be automatically lowered to the design criteria.
The specific technical scheme is as follows:
a flat water trough for use in a fishway comprising: the broken line weir body bends the short baffle plate and the outflow drain hole; the folding line weir body is arranged at the upstream of the folding short baffle plate, one end of the folding line weir body is connected to the folding short baffle plate, and the other end of the folding line weir body is connected to the fishway side wall;
the bottom of the cavity formed by the broken line weir body and the bent short baffle plate is connected with an outflow drain hole;
the outflow drain hole passes through the side wall of the fishway and is communicated with a drain device outside the fishway;
the top of the broken line weir body is wedge-shaped, and the vertex angle of the wedge-shaped section is smaller than 30 degrees;
the broken line weir body is formed by two sections of straight lines, and the intersection angle formed by the two sections of straight lines is smaller than 45 degrees; in experiments, the inventor finds that when the intersection angle formed by two sections of straight lines is larger than 45 degrees, the water head is high at the broken line weir body due to the travelling flow velocity, so that floaters can pass through the weir body and enter a cavity formed by the broken line weir body and the bent short baffle plate, and further the outflow and drainage holes are blocked, so that drainage is not smooth;
the top elevation of the broken line weir body is the designed water level of the corresponding baffle plate in the fishway.
When the water level in the fishway exceeds the designed water level of the fishway, water flows into the cavities of the folding line weir and the folding short baffle through the top of the folding line weir body and then is discharged out of the fishway side wall through the outflow drain hole.
The utility model has the beneficial effects that:
the horizontal water tank design structure applied to the fishway integrates the functions of the fishway short retaining wall body and the overflow weir, and provides an automatic adjustment scheme for the extra water head difference between fishway pool chambers; in particular when the monitoring system is not adequately covered, the flat water tank can still function.
Drawings
FIG. 1 is a schematic top view of the entirety of the present utility model disposed in a fishway;
FIG. 2 is a schematic top view of the present utility model, with arrows indicating water flow direction;
FIG. 3 is an enlarged schematic view of a single weir of the present utility model;
FIG. 4 is a schematic view of the utility model in section A-A' of FIG. 1;
FIG. 5 is a schematic view of the utility model in section B-B' of FIG. 3.
Detailed Description
The utility model will now be further described with reference to the accompanying drawings.
Example 1
A flat water trough for use in a fishway comprising: bending the short baffle plate 1, folding the line weir body 2 and discharging the water hole 3;
the folding line weir body 2 is arranged at the upstream of the folding short baffle plate 1, one end of the folding line weir body 2 is connected to the folding short baffle plate 1, and the other end is connected to the fishway side wall;
the bottom of a cavity formed by the broken-line weir body 2 and the bent short baffle plate 1 is connected with an outflow drain hole 3;
the outflow drain hole 3 passes through the side wall of the fishway and is communicated with a drain device outside the fishway;
the top of the broken line weir body 2 is wedge-shaped, and the vertex angle of the wedge-shaped section is smaller than 30 degrees;
the broken line weir body 2 is formed by two sections of straight lines, and the intersection angle formed by the two sections of straight lines is smaller than 45 degrees; in experiments, the inventor finds that when the intersection angle formed by two sections of straight lines is larger than 45 degrees, the water head is blocked up at the position of the broken-line weir body 2 due to the travelling flow velocity, so that floaters can pass through the weir body and enter a cavity formed by the broken-line weir body 2 and the bent short baffle plate 1, and further the outflow and drainage hole 3 is blocked, so that the drainage is not smooth;
the top elevation of the broken line weir body 2 is the designed water level of the corresponding baffle plate in the fishway.
When the water level in the fishway exceeds the designed water level of the fishway, water flows into a cavity formed by the broken-line weir body 2 and the bent short baffle plate 1 through the top of the broken-line weir body 2, and then is discharged out of the fishway side wall through the outflow drain hole 3. The arrangement is that when the water level upstream of the partition plate exceeds the design water level, the broken line weir body 2 drains the ultrahigh water body, and the water level upstream of the partition plate is kept not to exceed the specified design water level.
Claims (5)
1. A flat water tank for use in a fishway, characterized in that: comprising the following steps: the broken line weir body bends the short baffle plate and the outflow drain hole;
the folding line weir body is arranged at the upstream of the folding short baffle plate, one end of the folding line weir body is connected to the folding short baffle plate, and the other end of the folding line weir body is connected to the fishway side wall;
the bottom of a cavity formed by the broken line weir body and the bent short baffle plate is connected with an outflow drain hole;
the outflow drain hole is communicated with the outside through the fishway side wall.
2. A flat water tank for use in a fishway as claimed in claim 1 wherein: the top of the broken line weir body is wedge-shaped, and the vertex angle of the wedge-shaped section is smaller than 30 degrees.
3. A flat water tank for use in a fishway as claimed in claim 1 wherein: the broken line weir body is formed by two sections of straight lines, and the intersection angle formed by the two sections of straight lines is smaller than 45 degrees.
4. A flat water tank for use in a fishway as claimed in claim 1 wherein: the top elevation of the broken line weir body is the designed water level of the fishway.
5. A flat water tank for use in a fishway as claimed in claim 1 wherein: when the water level in the fishway exceeds the designed water level of the fishway, water flows into the cavities of the folding line weir and the folding short baffle through the top of the folding line weir body and then is discharged out of the fishway side wall through the outflow drain hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322242602.5U CN220598374U (en) | 2023-08-18 | 2023-08-18 | Flat water tank applied in fishway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322242602.5U CN220598374U (en) | 2023-08-18 | 2023-08-18 | Flat water tank applied in fishway |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220598374U true CN220598374U (en) | 2024-03-15 |
Family
ID=90167897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322242602.5U Active CN220598374U (en) | 2023-08-18 | 2023-08-18 | Flat water tank applied in fishway |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220598374U (en) |
-
2023
- 2023-08-18 CN CN202322242602.5U patent/CN220598374U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |