CN115162291B - Fishway back-stream water flow control structure - Google Patents
Fishway back-stream water flow control structure Download PDFInfo
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- CN115162291B CN115162291B CN202210859590.8A CN202210859590A CN115162291B CN 115162291 B CN115162291 B CN 115162291B CN 202210859590 A CN202210859590 A CN 202210859590A CN 115162291 B CN115162291 B CN 115162291B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 42
- 241000251468 Actinopterygii Species 0.000 claims abstract description 92
- 230000001276 controlling effect Effects 0.000 claims abstract description 21
- 230000001105 regulatory effect Effects 0.000 claims abstract description 17
- 238000001514 detection method Methods 0.000 claims description 26
- 239000012528 membrane Substances 0.000 claims description 24
- 238000005096 rolling process Methods 0.000 claims description 9
- 238000013016 damping Methods 0.000 claims description 8
- 238000011144 upstream manufacturing Methods 0.000 claims description 8
- 235000013305 food Nutrition 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 12
- 230000000903 blocking effect Effects 0.000 abstract description 9
- 230000009182 swimming Effects 0.000 abstract description 6
- 230000005484 gravity Effects 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000005188 flotation Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000013589 supplement Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B8/00—Details of barrages or weirs ; Energy dissipating devices carried by lock or dry-dock gates
- E02B8/08—Fish passes or other means providing for migration of fish; Passages for rafts or boats
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B8/00—Details of barrages or weirs ; Energy dissipating devices carried by lock or dry-dock gates
- E02B8/08—Fish passes or other means providing for migration of fish; Passages for rafts or boats
- E02B8/085—Devices allowing fish migration, e.g. fish traps
-
- 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Marine Sciences & Fisheries (AREA)
- Farming Of Fish And Shellfish (AREA)
Abstract
The invention discloses a fishway back-stream water flow control structure, and belongs to the technical field of hydraulic engineering. The structure comprises a dam body and a flow speed regulating and controlling assembly, wherein a fishway is formed in the dam body, a plurality of turbulence rings are arranged in the fishway, and the flow speed regulating and controlling assembly is arranged in the fishway and is close to the downstream end of the fishway. Besides the flow blocking and turbulent flow by arranging the turbulent flow ring, the flow speed regulating and controlling assembly is arranged at the position, close to the downstream end, in the fishway for flow blocking and turbulent flow, so that the effect and flexibility of controlling the flow speed of water flow in the fishway are improved through the flow speed regulating and controlling assembly. When fish back-stream through the fishway, if the physical strength of the fish is insufficient and the fish stops swimming, the fish can fall to a slow flow area between adjacent turbulence rings under the action of gravity, so that the fish can not be directly flushed to the downstream of the fishway by water flow, and the fish can stay in the slow flow area and temporarily rest, and back-stream is continued after the physical strength is recovered.
Description
Technical Field
The invention relates to a fishway back water flow control structure, and belongs to the technical field of hydraulic engineering.
Background
The aquatic organism protection is an important problem to be considered in the hydraulic engineering construction project, in order to reduce the influence of hydraulic engineering on the living condition and hydrologic situation of aquatic organisms such as fish and the like and reduce the damage of blocking of upstream and downstream aquatic organisms caused by dam construction, the main measure adopted at present is to construct a fishway in the hydraulic engineering, and fish can return to the stream through the fishway. The fish channel is a channel for fish to swim back, mainly considering the upstream habit of fish, at the downstream of the fish channel, fish flows back into the fish channel under the attraction of water flow and swim back to the upstream of the fish channel, because part of river water flow is relatively turbulent, the water flow in the fish channel is easy to be disturbed, the fish is difficult to swim back smoothly by means of self force, and after a small distance of fish swim back, the fish is flushed back to the downstream of the fish channel by the water flow due to insufficient physical strength.
For this purpose, chinese patent document publication No. CN105862687a discloses a spoiler pipeline type fishway comprising: and the air flow blocking plates are uniformly arranged in the tubular main body along the tubular main body. The flow velocity of water in the tubular main body is reduced through the flow blocking plate, so that the probability of successful upstream return of the downstream fish is improved.
However, the flow rate of water in the tubular body is controlled only by the spoilers, and the flow rate control effect and the flow rate control flexibility thereof are to be further improved.
Disclosure of Invention
In order to solve the technical problems, the invention provides a fishway back water flow control structure.
The invention is realized by the following technical scheme:
the utility model provides a fishway back stream water flow control structure, includes dam body and velocity of flow regulation and control subassembly, the fishway has been seted up in the dam body, be equipped with a plurality of vortex ring in the fishway, velocity of flow regulation and control subassembly establishes in the fishway to near the downstream end of fishway.
A plurality of turbulent flow rings are arranged in the fishway at equal intervals, the turbulent flow rings are conical, and the small ends of the turbulent flow rings point to the upstream end of the fishway.
The flow speed regulating and controlling assembly comprises a servo motor, a roller wheel and a connecting plate, wherein a rotary groove is formed in the bottom of the fishway, the roller wheel is located in the rotary groove and sleeved on an output shaft of the servo motor, an air flotation bag is arranged in the connecting plate, the top of the connecting plate is connected with the top of the fishway through an elastic folding curtain, and the bottom of the connecting plate is connected with the roller wheel through a connecting rope.
And a plurality of guide holes are uniformly formed in the elastic folding curtain.
The inner wall of the rotary groove is uniformly provided with a plurality of magnetic blocks, the inside of the rolling wheel is fixedly provided with a follow-up strip, and the follow-up strip can be attracted by the magnetic blocks.
The bottom of the connecting plate is provided with a plurality of flexible streamers, and the flexible streamers are provided with a plurality of metal sheets.
The fishway back water flow control structure further comprises a controller, a waterproof film is arranged on the inner wall of the vortex ring, the inner wall of the waterproof film is connected with the vortex ring through an elastic block, a detection box is arranged on the inner side of the waterproof film on the vortex ring, a travel switch is arranged on the inner side of the detection box on the vortex ring, a sliding plate is connected in the detection box in a sliding mode, a detection block is arranged on one side of the sliding plate, the other side of the sliding plate is connected with the inner wall of the waterproof film through a connecting rod, and the controller is electrically connected with the travel switch and the servo motor.
The detection box is internally provided with gas, the sliding plate is provided with a through hole, one side of the sliding plate, which is close to the connecting rod, is hinged with a flexible sheet at a position corresponding to the through hole, the flexible sheet is provided with a damping hole, and the diameter of the damping hole is smaller than that of the through hole.
And a drainage hole is axially arranged at the position, close to the fishway, on the turbulence ring.
An elastic membrane is arranged on the outer wall of the turbulence ring at a position close to the bottom of the fishway, a discharge hole is formed in the elastic membrane, and fish food is filled in a space surrounded by the elastic membrane and the turbulence ring.
The invention has the beneficial effects that:
1. besides the flow blocking and turbulent flow by arranging the turbulent flow ring, the flow speed regulating and controlling assembly is arranged at the position, close to the downstream end, in the fishway for flow blocking and turbulent flow, so that the effect and flexibility of controlling the flow speed of water flow in the fishway are improved through the flow speed regulating and controlling assembly.
2. When fish back-stream through the fishway, if the physical strength of the fish is insufficient and the fish stops swimming, the fish can fall to a slow flow area between adjacent turbulence rings under the action of gravity, so that the fish can not be directly flushed to the downstream of the fishway by water flow, and the fish can stay in the slow flow area and temporarily rest, and back-stream is continued after the physical strength is recovered.
3. After fish swim into the fishway, the rolling wheel can be driven by the servo motor to rotate, so that the elastic folding curtain is unfolded and used for plugging the fishway, the fluidity of water in the fishway is reduced, and the resistance of fish swim back is reduced, so that fish swim back through the fishway more easily.
4. When fish is positioned in the slow flow area between the adjacent turbulent flow rings at the lower part of the fishway, if the fish moves to squeeze the elastic membrane, fish food in the elastic membrane can be discharged through the discharge port for the fish to eat and supplement physical strength.
Drawings
FIG. 1 is a cross-sectional view of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is a partial enlarged view of FIG. 2 at B;
FIG. 4 is an enlarged view of a portion of FIG. 1 at C;
FIG. 5 is an enlarged view of a portion of FIG. 1 at D;
fig. 6 is a schematic view of the assembled structure of the flexible streamer and sheet metal of the invention.
In the figure: the device comprises a 1-dam body, a 2-fishway, a 3-turbulent ring, a 4-elastic folding curtain, a 5-connecting plate, a 6-air bag, a 7-rotating groove, an 8-rolling wheel, a 9-connecting rope, a 10-waterproof film, an 11-elastic block, a 12-detection box, a 13-sliding plate, a 14-connecting rod, a 15-travel switch, a 16-detection block, a 17-guide hole, an 18-through hole, a 19-flexible sheet, a 20-damping hole, a 21-drainage hole, a 22-elastic film, a 23-discharge hole, a 24-magnetic block, a 25-follow-up strip, a 26-flexible ribbon and a 27-metal sheet.
Detailed Description
The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the above.
As shown in fig. 1 to 6, the fishway back-stream water flow control structure of the invention comprises a dam body 1 and a flow speed regulating and controlling assembly, wherein a fishway 2 is arranged in the dam body 1, a plurality of turbulence rings 3 are arranged in the fishway 2, and the flow speed regulating and controlling assembly is arranged in the fishway 2 and is close to the downstream end of the fishway 2. When the flow-stopping and turbulence device is used, besides the turbulence ring 3 is arranged in the fishway 2 to perform flow-stopping and turbulence, the flow-speed regulating and controlling assembly is arranged at a position, close to the downstream end, in the fishway 2 to perform flow-stopping and turbulence, so that the effect and flexibility of controlling the flow speed of water flow in the fishway 2 are improved through the flow-speed regulating and controlling assembly.
A plurality of turbulence rings 3 are arranged in the fishway 2 at equal intervals, the turbulence rings 3 are conical, and the small ends of the turbulence rings 3 point to the upstream end of the fishway 2. The equidistant setting of a plurality of vortex rings 3 in the fishway 2 to constitute the slow flow region between the adjacent vortex rings 3 of fishway 2 lower part, because the interference effect of vortex ring 3 to rivers makes the rivers mobility in this slow flow region relatively poor, when fish back-stream through fishway 2, if fish physical power is not enough and stop swimming, can receive gravity effect and fall the slow flow region between the adjacent vortex rings 3, make fish can not directly be washed the fishway 2 low reaches by rivers, and fish can stop and briefly rest in this slow flow region, continue back-stream after physical power resumes again. By arranging a plurality of turbulence rings 3, namely forming a plurality of slow flow areas, fishes can stay and rest for a plurality of times in the fishway 2 until smoothly flowing back to the upstream of the fishway 2.
The flow speed regulating and controlling assembly comprises a servo motor, a rolling wheel 8 and a connecting plate 5, wherein a rotary groove 7 is formed in the bottom of the fishway 2, the rolling wheel 8 is located in the rotary groove 7 and sleeved on an output shaft of the servo motor, an air flotation bag 6 is installed in the connecting plate 5, the top of the connecting plate 5 is connected with the top of the fishway 2 through an elastic folding curtain 4, and the bottom of the connecting plate 5 is connected with the rolling wheel 8 through a connecting rope 9. When in use, the elastic folding curtain 4 is perpendicular to the central axis of the fishway 2 and is used for throttling or blocking the water flow in the fishway 2. After fish swim to the fishway 2, can drive reel 8 through servo motor and rotate, and then will connect rope 9 roll-up through reel 8, connect rope 9 pulling connecting plate 5 downwardly moving until laminating with fishway 2 bottom plate for elasticity folding curtain 4 is expanded and is plugged to fishway 2, thereby reduces the mobility of the inside water of fishway 2, and then reduces the resistance when fish back reaches, makes fish more easily pass through fishway 2 back reaches.
A plurality of guide holes 17 are uniformly formed in the elastic folding curtain 4. When the elastic folding curtain 4 is unfolded to block the fishway 2, part of water still can flow through the guide hole 17, so that a certain water flow effect exists in the fishway 2, and the fish is prevented from stopping back-swimming due to the fact that the fish loses water flow attraction after the fishway 2 is completely blocked.
A plurality of magnetic blocks 24 are uniformly distributed on the inner wall of the rotary groove 7, a follow-up strip 25 is fixedly arranged in the reel 8, and the follow-up strip 25 can be attracted by the magnetic blocks 24. In the rotation process of the reel 8, the follow-up strips 25 are sequentially attracted by the magnetic blocks 24, so that an intermittent resistance effect is generated on the rotation process of the reel 8, the reel 8 can drive the connecting rope 9 to intermittently shake, the connecting rope 9 drives the connecting plate 5 and the elastic folding curtain 4 to continuously shake, the nearby fishes are frightened and dispersed, and the fishes are prevented from being extruded and killed in the downward movement process of the connecting plate 5. The reel 8 can also be eccentrically sleeved on the output shaft of the servo motor to produce intermittent shaking.
The bottom of the connecting plate 5 is provided with a plurality of flexible streamers 26, and a plurality of metal sheets 27 are arranged on the flexible streamers 26. When the connecting plate 5 shakes, the plurality of flexible streamers 26 are driven to swing, the continuously swinging flexible streamers 26 and the metal sheets 27 are in contact with nearby fishes, so that the fishes are further frightened and dispersed, the fishes are prevented from yielding, and the fishes are further prevented from being extruded and killed in the downward moving process of the connecting plate 5.
The fishway back water flow control structure further comprises a controller, the inner wall of the turbulent flow ring 3 is provided with a waterproof film 10, the inner wall of the waterproof film 10 is connected with the turbulent flow ring 3 through an elastic block 11, the inner side of the waterproof film 10 is provided with a detection box 12, the turbulent flow ring 3 is provided with a travel switch 15 at the inner side of the detection box 12, the detection box 12 is slidably connected with a sliding plate 13, one side of the sliding plate 13 is provided with a detection block 16, the other side of the sliding plate 13 is connected with the inner wall of the waterproof film 10 through a connecting rod 14, and the controller is electrically connected with the travel switch 15 and a servo motor. When fish moves inside the turbulence ring 3, if the fish contacts and presses the waterproof membrane 10, the connecting rod 14 drives the sliding plate 13 to slide inside the detection box 12, so that the detection block 16 is pushed to contact with the travel switch 15, the travel switch 15 is continuously triggered, a relevant signal is transmitted to the controller by the travel switch 15, and the controller controls the servo motor to act so that the elastic folding curtain 4 expands to seal the fishway 2, so that the flow rate of water in the fishway 2 is reduced, and the fish back-stream is facilitated. Only when fish enters the fishway 2 and extrudes the waterproof membrane 10, the servo motor is started, the starting times of the servo motor are reduced, energy is saved, after the fish does not extrude the waterproof membrane 10 any more, the elastic block 11 (also can be a spring) pushes the waterproof membrane 10 to reset and bulge, the detection block 16 is separated from the travel switch 15, the servo motor is controlled to stop rotating after the controller receives a relevant signal of the travel switch 15, the servo motor is controlled to reversely rotate after a certain time delay, a section of connecting rope 9 is released, and then the connecting plate 5 is automatically reset upwards under the buoyancy action of the air flotation bag 6.
The detection box 12 stores gas, the sliding plate 13 is provided with a through hole 18, one side of the sliding plate 13, which is close to the connecting rod 14, is hinged with a flexible sheet 19 at a position corresponding to the through hole 18, the flexible sheet 19 is provided with a damping hole 20, and the diameter of the damping hole 20 is smaller than that of the through hole 18. When the slide plate 13 moves towards the direction close to the travel switch 15, the flexible sheet 19 is pushed away directly by the gas in the rodless cavity of the detection box 12, so that the through hole 18 is opened by the flexible sheet 19, and the gas can flow through the through hole 18, therefore, the movement speed of the slide plate 13 is higher, when the slide plate 13 is reset under the action of the elastic block 11, the flexible sheet 19 is pressed on the slide plate 13 by the gas in the rod cavity of the detection box 12, and the through hole 18 is blocked, and then the gas can only flow through the damping hole 20, so that the movement speed of the slide plate 13 is slower, namely the separation speed of the detection block 16 and the travel switch 15 is slower, the working time of the servo motor for driving the reel 8 to roll up the connecting rope 9 is prolonged, and the connecting plate 5 is pulled to the bottom of the fishway 2 as much as possible.
And a drainage hole 21 is axially arranged at a position, close to the fishway 2, on the turbulence ring 3. The drainage holes 21 are formed in the turbulence rings 3, so that water can flow through the drainage holes 21, when fish is located in a slow flow area between adjacent turbulence rings 3, the water flow effect brought by the drainage holes 21 can be felt, certain water flow still exists in the slow flow area, and the problem that the fish stops flowing back due to losing water flow attraction is avoided.
An elastic membrane 22 is arranged on the outer wall of the turbulence ring 3 at a position close to the bottom of the fishway 2, a discharge hole 23 is arranged on the elastic membrane 22, and fish food is filled in a space surrounded by the elastic membrane 22 and the turbulence ring 3. When fish is positioned in the slow flow area between the adjacent turbulence rings 3 at the lower part of the fishway 2, if the fish moves to squeeze the elastic membrane 22, fish food in the elastic membrane 22 can be discharged through the discharge port 23 for the fish to eat and supplement physical strength.
The invention relates to a fishway back water flow control structure, which has the following working principle:
a plurality of turbulence rings 3 are arranged in the fishway 2 at equal intervals, and the turbulence rings 3 are used for carrying out flow resistance and turbulence on water flow in the fishway 2 so as to reduce the flow speed of the water flow and form turbulence in the fishway 2, thereby being beneficial to the back stream of fish in the fishway 2; meanwhile, a slow flow area is formed between the adjacent turbulence rings 3 at the lower part of the fishway 2, because the interference effect of the turbulence rings 3 on water flow is poor, when fish returns to the stream through the fishway 2, if the physical strength of the fish is insufficient and the fish stops swimming, the fish can fall into the slow flow area between the adjacent turbulence rings 3 under the action of gravity, so that the fish can not be directly flushed to the downstream of the fishway 2 by the water flow, and the fish can stay and temporarily rest in the slow flow area and continue to return to the stream after the physical strength is recovered.
When fish moves inside the turbulence ring 3, if the fish contacts and presses the waterproof membrane 10, the connecting rod 14 drives the sliding plate 13 to slide inside the detection box 12, so as to push the detection block 16 to contact with the travel switch 15 and continuously trigger the travel switch 15, the travel switch 15 transmits related signals to the controller, and the controller controls the servo motor to act so that the elastic folding curtain 4 expands to seal the fishway 2, thereby reducing the flow rate of water flow in the fishway 2 and being beneficial to fish back-stream. When the fish does not squeeze the waterproof membrane 10 any more, the elastic block 11 pushes the waterproof membrane 10 to reset and bulge, the detection block 16 is separated from the travel switch 15, the controller controls the servo motor to stop rotating after receiving the relevant signal of the travel switch 15, after a period of time, the controller controls the servo motor to reversely rotate to release a section of connecting rope 9, and then the connecting plate 5 is automatically reset upwards under the buoyancy effect of the air flotation bag 6.
When fish is positioned in the slow flow area between the adjacent turbulence rings 3 at the lower part of the fishway 2, if the fish moves to squeeze the elastic membrane 22, fish food in the elastic membrane 22 can be discharged through the discharge port 23 for the fish to eat and supplement physical strength.
The fishway back-stream water flow control structure provided by the invention has the beneficial effects that:
1. Besides the flow blocking and turbulent flow by the turbulent flow ring 3, a flow speed regulating and controlling component is arranged at the position, close to the downstream end, in the fishway 2 to block flow and turbulent flow, so that the effect and flexibility of controlling the flow speed of the water flow in the fishway 2 are improved through the flow speed regulating and controlling component.
2. When the fish returns to the journey through the fishway 2, if the physical strength of the fish is insufficient and the fish stops swimming, the fish can fall into a slow flow area between the adjacent turbulence rings 3 under the action of gravity, so that the fish can not be directly flushed to the downstream of the fishway 2 by water flow, and the fish can stay in the slow flow area and briefly rest, and then continue to return to the journey after the physical strength is recovered.
3. After fish swims into the fishway 2, the roller 8 can be driven by the servo motor to rotate, so that the elastic folding curtain 4 is unfolded and seals the fishway 2, the fluidity of water in the fishway 2 is reduced, the resistance of fish during back swimming is reduced, and the fish can more easily back swim through the fishway 2.
4. When fish is positioned in the slow flow area between the adjacent turbulence rings 3 at the lower part of the fishway 2, if the fish moves to squeeze the elastic membrane 22, fish food in the elastic membrane 22 can be discharged through the discharge port 23 for the fish to eat and supplement physical strength.
Claims (8)
1. The utility model provides a fishway back stream control structure which characterized in that: the device comprises a dam body (1) and a flow speed regulating and controlling assembly, wherein a fishway (2) is formed in the dam body (1), a plurality of turbulence rings (3) are arranged in the fishway (2), and the flow speed regulating and controlling assembly is arranged in the fishway (2) and is close to the downstream end of the fishway (2);
The flow speed regulating and controlling assembly comprises a servo motor, a rolling wheel (8) and a connecting plate (5), wherein a rotary groove (7) is formed in the bottom of the fishway (2), the rolling wheel (8) is positioned in the rotary groove (7) and sleeved on an output shaft of the servo motor, an air floatation bag (6) is arranged in the connecting plate (5), the top of the connecting plate (5) is connected with the top of the fishway (2) through an elastic folding curtain (4), and the bottom of the connecting plate (5) is connected with the rolling wheel (8) through a connecting rope (9);
The fishway back water flow control structure further comprises a controller, a waterproof film (10) is arranged on the inner wall of the vortex ring (3), the inner wall of the waterproof film (10) is connected with the vortex ring (3) through an elastic block (11), a detection box (12) is arranged on the inner side of the waterproof film (10) on the vortex ring (3), a travel switch (15) is arranged on the inner side of the detection box (12) on the vortex ring (3), a sliding plate (13) is connected in the detection box (12) in a sliding manner, a detection block (16) is arranged on one side of the sliding plate (13), the other side of the sliding plate is connected with the inner wall of the waterproof film (10) through a connecting rod (14), and the controller is electrically connected with the travel switch (15) and a servo motor.
2. The fishway back stream control structure of claim 1, wherein: a plurality of turbulence rings (3) are arranged in the fishway (2) at equal intervals, the turbulence rings (3) are conical, and the small ends of the turbulence rings (3) point to the upstream end of the fishway (2).
3. The fishway back stream control structure of claim 1, wherein: a plurality of guide holes (17) are uniformly formed in the elastic folding curtain (4).
4. The fishway back stream control structure of claim 1, wherein: a plurality of magnetic blocks (24) are uniformly distributed on the inner wall of the rotary groove (7), a follow-up strip (25) is fixedly arranged in the reel (8), and the follow-up strip (25) can be attracted by the magnetic blocks (24).
5. The fishway back stream control structure of claim 1, wherein: the bottom of the connecting plate (5) is provided with a plurality of flexible streamers (26), and the flexible streamers (26) are provided with a plurality of metal sheets (27).
6. The fishway back stream control structure of claim 1, wherein: the detection box (12) stores gas, the sliding plate (13) is provided with a through hole (18), one side, close to the connecting rod (14), of the sliding plate (13) is hinged with a flexible sheet (19) at a position corresponding to the through hole (18), the flexible sheet (19) is provided with a damping hole (20), and the diameter of the damping hole (20) is smaller than that of the through hole (18).
7. The fishway back stream control structure of claim 1, wherein: and a drainage hole (21) is axially arranged at the position, close to the fishway (2), of the turbulence ring (3).
8. The fishway back stream control structure of claim 1, wherein: an elastic membrane (22) is arranged on the outer wall of the turbulence ring (3) at a position close to the bottom of the fishway (2), a discharge hole (23) is formed in the elastic membrane (22), and fish food is filled in a space surrounded by the elastic membrane (22) and the turbulence ring (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210859590.8A CN115162291B (en) | 2022-07-20 | 2022-07-20 | Fishway back-stream water flow control structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210859590.8A CN115162291B (en) | 2022-07-20 | 2022-07-20 | Fishway back-stream water flow control structure |
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| CN115162291A CN115162291A (en) | 2022-10-11 |
| CN115162291B true CN115162291B (en) | 2024-05-10 |
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| KR20150109701A (en) * | 2014-03-20 | 2015-10-02 | 변찬우 | An ecologocal check dam having zigzag-typed fishways and the method for the construction |
| CN203890976U (en) * | 2014-04-29 | 2014-10-22 | 长江勘测规划设计研究有限责任公司 | Novel fishway structure |
| CN104480913A (en) * | 2014-11-18 | 2015-04-01 | 河海大学 | Ecological fish way with staggered spacer block structures |
| CN205712014U (en) * | 2016-03-23 | 2016-11-23 | 李春垒 | A kind of have regulation current and the bionical ecological fishway of inducing action |
| CN206554039U (en) * | 2017-03-07 | 2017-10-13 | 国电大渡河沙坪水电建设有限公司 | A kind of vertical seam type fish channel structure |
| CN206547639U (en) * | 2017-03-07 | 2017-10-13 | 国电大渡河沙坪水电建设有限公司 | A kind of vertical seam type fish channel rest pond |
| CN108277784A (en) * | 2018-02-05 | 2018-07-13 | 安徽理工大学 | It is adapted to the imitative nature fish pass of different Burden-Swimming Ability of KM fish |
| CN113235530A (en) * | 2021-04-06 | 2021-08-10 | 珠江水利委员会珠江水利科学研究院 | Fishway system beneficial to stable and smooth migration of fishes |
| CN113279363A (en) * | 2021-05-27 | 2021-08-20 | 中国长江三峡集团有限公司 | Intelligent regulation and control device for fish migration and operation method thereof |
| CN114481978A (en) * | 2022-02-12 | 2022-05-13 | 郑州大学 | Multi-way energy dissipation and resistance reduction type ecological fishway |
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