Fish collecting system
By using anti-escaping cages and water replenishment devices in the fish collection system to replace the fish-chasing trolley, a low-cost and efficient fish collection process is achieved, solving the problems of high construction costs and high equipment failure rates in the existing technology, and improving the fish collection effect.
Patent Information
- Application Number
- CN202422284342.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-19
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-09-19
AI Technical Summary
The existing fish collection system has high construction costs and high equipment failure rate, resulting in unsatisfactory fish collection results.
A fish collection system was designed, using anti-escaping cages instead of fishing trolleys. Anti-escaping cages and water replenishment devices were installed in the fish collection path to induce fish into the fish collection path through the water flow, and the fish school was lifted in the fish collection bucket to reduce redundant structure and equipment failures.
It reduces construction costs, reduces equipment failures, improves the effect of fish collection, ensures that the fish enters the fish collection bucket smoothly and reduces the leakage of fish and damages during the upgrade process.
Smart Images
Figure CN223074664U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of water conservancy projects, in particular to a fish collection system. Background Art
[0002] According to statistics, as of 2012, there were 98,002 reservoirs and 46,758 hydropower stations distributed in China. While these water conservancy and hydropower projects are playing their roles in flood control, power generation, shipping and other aspects, they also have an unignorable impact on the ecological environment, especially the impact of blocking the fish migration channels. Compared with so many dams, as of now, there are less than 100 fish passing facilities built in China, and the problem of blocking fish migration channels within the basin is still very significant. Currently, China has entered the stage of ecological civilization construction, and it is very necessary to restore the fish migration channels of the existing projects and repair the river ecosystem.
[0003] As an ecological protection measure to restore fish migration channels, fish passing facilities have been used internationally for more than 300 years, which play a role in restoring fish migration channels and communicating the gene exchange of fish populations upstream and downstream. Currently, the main fish passing forms at home and abroad include fishways, natural-like channels, fish lifts, fish collection and transportation facilities, and fish locks, etc. Among these fish passing facilities, the fish collection system is the most important link.
[0004] The existing fish collection system mainly includes a fish collection channel, a fish driving trolley, a water supply device, a fish collection hopper, and a control gate. The water supply device artificially creates a flow in the fish collection channel, induces fish to enter the fish collection channel from the entrance of the fish collection channel through the water flow, closes the control gate, starts the fish driving trolley to drive the fish school to swim towards the fish collection hopper, and lifts the fish collection hopper to complete the fish collection process. The disadvantages of the existing technology are that the construction cost is high and the equipment failure rate is high, resulting in an unsatisfactory fish collection and attraction effect. Summary of the Utility Model
[0005] In order to overcome the deficiencies of the existing technology, the technical problem to be solved by the utility model is to provide a fish collection system with a simple and reasonable overall layout, no redundant structure, which replaces the fish driving trolley with an escape prevention cage in the fish collection channel, has a low construction cost, is not prone to equipment failure, and improves the fish collection effect.
[0006] To achieve the above object, the utility model provides a fish gathering system, which is arranged in the tail water area downstream of a river dam body and includes a fish gathering channel. A fish attracting port is arranged at the front end of the downstream of the fish gathering channel, and a fish gathering hopper is arranged at the upstream of the fish gathering channel. A first escape prevention cage is placed near the fish gathering hopper at the upstream of the fish gathering channel, and a second escape prevention cage is placed near the fish attracting port at the downstream of the fish gathering channel. The fish gathering hopper is located below the first escape prevention cage. A water replenishing device is arranged outside the end of the fish gathering channel. One end of the water replenishing pipe of the water replenishing device is communicated with the upstream of the fish gathering channel, and the other end of the water replenishing device is connected to the river channel. Water is replenished into the fish gathering channel through the water replenishing device to create a water flow flowing out from the fish attracting port.
[0007] Preferably, the first escape prevention cage and the second escape prevention cage have the same structure, which is a horn-shaped escape prevention device formed by a framework and a permeable grille. The permeable grille extends inwards and the cross-section gradually shrinks. An escape prevention opening is arranged at the small-mouth end of the permeable grille.
[0008] Furthermore, track limiting devices are arranged on both side surfaces of the framework, and lowering guide rails adapted to the track limiting devices are arranged on both side walls of the fish gathering channel. The escape prevention cage moves up and down along the fish gathering channel through the cooperation of the track limiting devices arranged on both sides of the framework and the lowering guide rails.
[0009] Preferably, the fish gathering hopper is located in a fish gathering well connected to the upstream end of the fish gathering channel. Flexible blocking devices are arranged around the top opening of the fish gathering hopper and cooperate with the surrounding of the fish gathering well.
[0010] Furthermore, the fish gathering hopper includes a box body and a lifting lug connected to the upper end of the box body. The lifting lug is connected to a lifting device through a cable, and limiting devices are arranged on both sides of the box body and connected to the lowering tracks on the side walls of the fish gathering well.
[0011] Furthermore, the box body is composed of an upper end of the box body and a lower end of the box body. Permeable holes are arranged on the four sides of the upper end of the box body. The lower end of the box body is a closed water storage area in a funnel shape, and a flip door is arranged at the bottom of the lower end of the box body.
[0012] Preferably, a fish observation room is arranged at the position between the first escape prevention cage and the second escape prevention cage on the outside of the fish gathering channel. An observation window is arranged between the fish observation room and the fish gathering channel, and an observation camera is installed in the fish observation room. The observation camera observes the fish attracting situation through the observation window.
[0013] Furthermore, the water replenishing device includes a water replenishing pool arranged outside the end of the fish collecting channel and a water replenishing pump located outside the water replenishing pool. A communication hole is provided between the water replenishing pool and the fish collecting well. One end of the water replenishing pump is connected to the water replenishing pool, and the other end of the water replenishing pump is connected to the river channel. The water replenishing pump is started to introduce water into the water replenishing pool, and the water in the water replenishing pool replenishes the fish collecting channel through the communication hole.
[0014] Preferably, a control gate is arranged at the position of the fish attracting port. Limiting pulleys are arranged on both sides of the control gate. The limiting pulleys are connected to the lowering slide rails on both sides of the fish attracting port. A lifting ring connected to a hoisting device by a steel cable is arranged at the top of the control gate.
[0015] Preferably, an infrared counting device is arranged in the fish collecting hopper.
[0016] Compared with the prior art, the beneficial effects of the fish collecting system of the present utility model are as follows:
[0017] The fish collecting channel of the present utility model is sequentially provided with a fish collecting hopper, an anti-escape cage and a fish attracting port from upstream to downstream. The fish collecting channel is replenished with water through the water replenishing device to create a water flow flowing out from the fish attracting port, forming a full flow velocity distribution in the fish collecting channel. According to the flow-tending characteristics of the fish school, the fish enter the fish collecting channel from the fish attracting port, pass through the second anti-escape cage, and then cannot escape anymore. They continue to pass through the first anti-escape cage and gather at the fish collecting hopper. The fish collecting hopper is lifted by the lifting device above the fish collecting well to complete fish collection. And during the lifting process, the gap between the fish collecting hopper and the periphery of the fish collecting well is filled by the flexible blocking device, reducing the possible fish leakage and fish injury situations during the lifting of the fish collecting hopper. The overall layout of the present utility model is simple and reasonable, without redundant structures. By arranging the first anti-escape cage and the second anti-escape cage in the fish collecting channel to replace the fish driving trolley, the construction cost and equipment failure rate are reduced, and the fish collecting effect is improved. Description of the Drawings
[0018] In order to more clearly illustrate the technical solutions of the present utility model, the drawings required for use in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0019] Figure 1 It is the front view structural schematic diagram of the fish collecting system of the present utility model;
[0020] Figure 2 It is the top view structural schematic diagram of the fish collecting system of the present utility model;
[0021] Figure 3 It is the structural schematic diagram of the fish collecting hopper of the present utility model;
[0022] Figure 4 This is a schematic structural view of the fish escape prevention cage of the present utility model.
[0023] In the figure: 1, fish collecting channel; 2, fish collecting hopper; 3, first fish escape prevention cage; 4, control gate; 5, fish attracting port; 6, water replenishing pool; 6.1, communication hole; 7, water replenishing pump; 8, fish observation room; 9, observation window; 10, second fish escape prevention cage; 2.1, upper end of the box body; 2.2, lower end of the box body; 2.3, lifting lug; 2.4, flexible blocking device; 3.1, frame; 3.2, permeable grille; 3.3, fish escape prevention opening. Specific implementation manners
[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0025] Next, refer to Figures 1 to 4 for a detailed description of the fish collecting system of the present utility model.
[0026] The fish collecting system of the present utility model includes a fish collecting channel 1 and a water replenishing device arranged outside the end of the fish collecting channel 1. The water replenishing pipe orifice at one end of the water replenishing device is communicated with the upstream of the fish collecting channel 1, and the water inlet at the other end of the water replenishing device is connected to a river channel. The fish collecting channel 1 is successively provided with a fish collecting hopper 2, a fish escape prevention cage, and a fish attracting port 5 from upstream to downstream. A control gate 4 is arranged at the position of the fish attracting port 5. The fish collecting hopper 2 is placed in a fish collecting well connected to the upstream end of the fish collecting channel 1. The fish escape prevention cage includes a first fish escape prevention cage 3 and a second fish escape prevention cage 10. The first fish escape prevention cage 3 is arranged near the fish collecting hopper 2 at the upstream of the fish collecting channel 1. The fish collecting hopper 2 is located below the first fish escape prevention cage 3. The second fish escape prevention cage 10 is arranged near the fish attracting port 5 at the downstream of the fish collecting channel 1.
[0027] The first fish escape prevention cage 3 and the second fish escape prevention cage 10 have the same structure, and both are trumpet-shaped fish escape prevention devices surrounded by a frame 3.1 and a permeable grille 3.2. The permeable grille 3.2 extends inward and the cross-section gradually shrinks. A fish escape prevention opening 3.3 is provided at the small-mouth end of the permeable grille 3.2. The fish escape prevention openings 3.3 at the front end and the rear end of the trumpet mouth are communicated.
[0028] In addition, track limiting devices are provided on both side surfaces of the frame 3.1 of the anti-escape cage. A lifting lug is provided at the top of the frame 3.1, and there are multiple lifting lugs. The anti-escape cage is connected to the lowering guide rails provided at the corresponding positions on both side walls of the fish collecting channel 1 through the track limiting devices provided on both sides of the frame. The connection method between the anti-escape cage and the lowering guide rails is gear connection or sliding connection. The anti-escape cage moves up and down along the fish collecting channel 1 through the cooperation between the track limiting devices provided on both sides of the frame 3.1 and the lowering guide rails.
[0029] As Figure 3 shown, the fish collecting hopper 2 includes a box body and a lifting lug 2.3 connected to the upper end of the box body. The lifting lug 2.3 is connected to the lifting device through a cable. Limiting devices are provided on both sides of the box body and are connected to the lowering tracks on the side walls of the fish collecting well. The box body is composed of an upper end 2.1 of the box body and a lower end 2.2 of the box body. Water permeable holes are provided on the four sides of the upper end 2.1 of the box body. The lower end 2.2 of the box body is a closed water storage area in a funnel shape, and a flip door is provided at the bottom of the lower end 2.2 of the box body. In addition, a flexible blocking device 2.4 is provided around the opening of the upper end 2.1 of the box body of the fish collecting hopper 2, and the flexible blocking device 2.4 cooperates with the surroundings of the fish collecting well.
[0030] In the present utility model, a fish observation room 8 is provided at a position between the first anti-escape cage 3 and the second anti-escape cage 10 on the outer side of the fish collecting channel 1. An observation window 9 is provided between the fish observation room 8 and the fish collecting channel 1. An observation camera is installed in the fish observation room 8, and the observation camera observes the fish attracting situation through the observation window 9.
[0031] Embodiment
[0032] A fish collecting system is set in the tail water area downstream of the river channel dam body. The length of the fish collecting channel 1 is 20 meters and the width is 2 meters. The depth is determined according to the annual average water level downstream of the river channel. The whole fish collecting channel 1 is of concrete structure. A fish attracting opening 5 with a width of 50 cm - 60 cm is set at the downstream front end of the fish collecting channel 1. A control gate 4 is set at the position of the fish attracting opening 5. Limit pulleys are set on both sides of the control gate 4. The limit pulleys are connected to the downward sliding rails on both sides of the fish attracting opening 5. A lifting ring is set at the top of the control gate 4 and is connected to a hoisting device through a steel cable. When there is a maintenance task, the control gate 4 can be lowered to drain the remaining water in the fish collecting channel 1 for maintenance work. A second fish escape prevention cage 10 is placed near the fish attracting opening 5 at the downstream of the fish collecting channel 1. The track limiting devices on both sides of the frame 3.1 of the fish escape prevention cage are placed in the fish collecting channel 1 along the downward guide rail. The bell mouth of the fish escape prevention cage faces the fish attracting opening 5. A first fish escape prevention cage 3 is placed near the fish collecting hopper 2 at the upstream of the fish collecting channel 1. The placement method is the same as that of the second fish escape prevention cage 10. The fish collecting hopper 2 is located in a fish collecting well connected to the upstream end of the fish collecting channel 1. A water replenishing pool 6 is set outside the end of the fish collecting channel 1. The water replenishing pool 6 is communicated with the fish collecting well at the upstream end of the fish collecting channel 1. A communication hole is provided between the water replenishing pool 6 and the fish collecting well. A water replenishing pump 7 is set outside the water replenishing pool 6. One end of the pipe of the water replenishing pump 7 is connected to the water replenishing pool 6, and the other end of the pipe of the water replenishing pump 7 is connected to the river channel. When the water replenishing pump 7 is started to supply water to the water replenishing pool 6, the water in the water replenishing pool 6 is supplied to the fish collecting channel 1 through the communication hole to create a water flow flowing out from the fish attracting opening 5 to form a full flow velocity distribution in the fish collecting channel 1. According to the cross-sectional area of the fish collecting channel 1 and the durable swimming speed of the observed target fish, the reasonable water replenishing amount in the fish collecting channel 1 can be calculated (the calculation method is the prior art), and the water replenishing amount is completed by controlling the water replenishing pump 7. According to the fish school's flow-following characteristics, fish enter the fish collecting channel 1 from the fish attracting opening 5, pass through the second fish escape prevention cage 10, and then cannot escape anymore. They continue to pass through the first fish escape prevention cage 3 and gather at the fish collecting hopper 2. According to the infrared counting device set in the fish collecting hopper 2, the number of fish individuals at the fish collecting hopper 2 can be known, and the fish collecting process can be completed by lifting the fish collecting hopper 2. The water replenishing pool 6 and the water replenishing pump 7 constitute a water replenishing device.
[0033] The frame 3.1 of the fish escape prevention cage and the permeable grille 3.2 can be welded and made of stainless steel material. The width of the bell mouth and the frame 3.1 can be made according to the width of the fish collecting channel 1.
[0034] The box body of the fish collecting hopper 2 can be made of stainless steel. The lifting lugs 2.3 connected to the upper end 2.1 of the box body are connected to the lifting device through a cable. Limit devices are provided on both sides of the box body and are connected to the lowering tracks on the side walls of the fish collecting well to prevent the box body from shaking during the lifting process. Water permeable holes are provided on the four sides of the upper end 2.1 of the box body. During the lifting process, part of the water will filter out through the water permeable holes, reducing the loading load of the lifting device. The four sides of the lower end 2.2 of the box body are closed water storage areas, and there is enough water at the bottom to keep the fish alive during the lifting process. The closed water storage area at the lower end 2.2 of the box body is in the shape of a hopper and is provided with a flip door. When the flip door is opened, the water and fish in the fish collecting hopper 2 can be completely discharged.
[0035] Flexible blocking devices 2.4 are provided around the opening of the upper end 2.1 of the box body of the fish collecting hopper 2. The fish collecting hopper 2 is placed in the fish collecting well, and there is usually a certain gap between it and the four sides of the fish collecting well. Flexible blocking devices 2.4 such as soft brushes can be installed around the opening of the upper end 2.1 of the box body to reduce the gap between the fish collecting hopper 2 and the fish collecting well, and reduce the situation of fish leakage and injury that may occur during the lifting process of the fish collecting hopper 2. In this embodiment, the flexible blocking device 2.4 is a soft brush.
[0036] A fish observation room 8 is provided between the first anti-escape cage 3 and the second anti-escape cage 10 on the outside of the fish collecting channel 1. An observation window 9 made of glass is provided between the fish observation room 8 and the fish collecting channel 1. An observation camera is installed in the observation window 9 to observe the fish attracting situation through the observation window 9. Placing the observation camera in the waterless environment of the fish observation room 8 can, on the one hand, reduce the failure rate of the observation equipment, and on the other hand, also reduce the performance requirements for the observation equipment, and to a certain extent reduce the equipment procurement cost.
[0037] As described above, it is only the specific implementation manner in the present invention, but the protection scope of the present invention is not limited thereto. Any transformation or replacement that can be understood by those familiar with the technology within the technical scope disclosed by the present invention should be covered within the scope of the present invention.
Claims
1. A fish collecting system is arranged in the tail water area downstream of a river channel dam body and includes a fish collecting channel (1), characterized in that: The downstream front end of the fish collecting channel (1) is provided with a fish attracting port (5), and a fish collecting hopper (2) is arranged upstream of the fish collecting channel (1); A first escape prevention cage (3) is placed near the fish collecting hopper (2) upstream of the fish collecting channel (1), and a second escape prevention cage (10) is placed near the fish attracting port (5) downstream of the fish collecting channel (1). The fish collecting hopper (2) is located below the first escape prevention cage (3); A water replenishing device is arranged outside the end of the fish collecting channel (1). One end of the water replenishing pipe opening of the water replenishing device is communicated with the upstream of the fish collecting channel (1), and the other end of the water replenishing device is connected to the river channel. Water is replenished to the fish collecting channel (1) through the water replenishing device to create a water flow flowing out from the fish attracting port (5).
2. The fish-aggregating system according to claim 1, characterized in that, The first escape prevention cage (3) and the second escape prevention cage (10) have the same structure, which is a trumpet-shaped escape prevention device surrounded by a frame (3.1) and a permeable grille (3.2). The permeable grille (3.2) extends inwards and the cross-section gradually shrinks. An escape prevention opening (3.3) is arranged at the small-mouth end of the permeable grille (3.2).
3. The fish aggregating system according to claim 2, wherein Track limiting devices are arranged on both side surfaces of the frame (3.1), and lowering guide rails adapted to the track limiting devices are arranged on both side walls of the fish collecting channel (1). The escape prevention cage moves up and down along the fish collecting channel (1) through the cooperation of the track limiting devices arranged on both sides of the frame (3.1) and the lowering guide rails.
4. The fish-aggregating system according to claim 1, wherein The fish collecting hopper (2) is located in a fish collecting well connected to the upstream end of the fish collecting channel (1). Flexible blocking devices (2.4) are arranged around the top opening of the fish collecting hopper (2), and the flexible blocking devices (2.4) cooperate with the periphery of the fish collecting well.
5. The fish-aggregating system according to claim 4, wherein The fish collecting hopper (2) includes a box body and lifting lugs (2.3) connected to the upper end of the box body. The lifting lugs (2.3) are connected to a lifting device through a cable, and limiting devices are arranged on both sides of the box body and connected to lowering tracks on the side walls of the fish collecting well.
6. The fish-aggregating system according to claim 5, characterized in that, The box body is composed of an upper box body end (2.1) and a lower box body end (2.2). The four sides of the upper box body end (2.1) are provided with water permeable holes. The lower box body end (2.2) is a funnel-shaped closed water storage area, and a turning door is arranged at the bottom of the lower box body end (2.2).
7. The fish-aggregating system according to claim 1, wherein A fish observation chamber (8) is arranged outside the fish collecting channel (1) at a position between the first escape prevention cage (3) and the second escape prevention cage (10). An observation window (9) is arranged between the fish observation chamber (8) and the fish collecting channel (1). An observation camera is installed in the fish observation chamber (8), and the observation camera observes the fish attracting situation through the observation window (9).
8. The fish-aggregating system according to claim 4, wherein The water replenishing device includes a water replenishing pool (6) arranged outside the end of the fish collecting channel (1) and a water replenishing pump (7) located outside the water replenishing pool (6). A communication hole is arranged between the water replenishing pool (6) and the fish collecting well; One end of the pipe opening of the water replenishing pump (7) is connected to the water replenishing pool (6), and the other end of the pipe opening of the water replenishing pump (7) is connected to the river channel. The water replenishing pump (7) is started to supply water to the water replenishing pool (6), and the water in the water replenishing pool (6) replenishes water to the fish collecting channel (1) through the communication hole.
9. The fish-aggregating system according to claim 1, wherein A control gate (4) is arranged at the position of the fish attracting port (5). Limiting pulleys are arranged on both sides of the control gate (4). The limiting pulleys are connected with the downward sliding rails on both sides of the fish attracting port (5). A lifting ring connected to a lifting device through a steel cable is arranged at the top of the control gate (4).
10. The fish-aggregating system according to claim 1, wherein, An infrared counting device is arranged in the fish collecting hopper (2).