Vertical slit type fishway with tourism viewing function and operation method

Abstract

This invention discloses a vertical slotted fishway with tourism and sightseeing functions and its operation method, belonging to the field of water conservancy and hydropower ecological protection technology. The fishway includes a dam body, a vertical slotted fishway, a landscape tourism system, and a fish transfer system. The vertical slotted fishway is located on one side of the dam body and passes through it. Both the landscape tourism system and the fish transfer system are located on the vertical slotted fishway. The landscape tourism system integrates tourism and sightseeing design concepts into the vertical slotted fishway. Specifically, a ramp is built above the fishway guide plate and the fishway pool, and a running track is installed on the water-facing side of the ramp, providing sightseeing facilities with different experiences for tourists and local residents. The fish transfer system has advantages such as novel structure, flexible fish transfer, and high transfer efficiency, adding the function of peak-hour evacuation and transfer to the vertical slotted fishway, while also possessing a certain degree of scenic value, further enhancing the tourism and sightseeing benefits of the fishway.

Description

Technical Field

[0001] This invention relates to a vertical slotted fishway with tourism and sightseeing functions and its operation method, belonging to the field of water conservancy and hydropower ecological protection technology. Background Technology

[0002] Currently, to mitigate the impact of dam barriers on migratory fish and promote gene exchange between fish populations upstream and downstream of the dam site, fish passages are mainly facilitated domestically and internationally through fishways, simulated natural channels, fish lifts, fish collection and transport facilities, and fish locks. While these various types of fish passage facilities have contributed to promoting gene exchange between fish populations upstream and downstream of the dam, they are integral parts of the dam's structure, involving substantial investment and complex operation. Existing engineering design examples primarily focus on providing fish passageways without considering investment strategies to enhance operational efficiency and achieve social benefits through these facilities.

[0003] Based on the above research status, the applicant has proposed several patents from the perspective of leveraging the tourism and scenic functions of fish passage facilities, such as patent CN114673124B entitled "A Fish Passing System and Method with Tourism and Sightseeing Functions", patent CN115162290B entitled "A Sightseeing Fish Passing System and Method", and patent CN202310179245.4 entitled "A Floating Fish Passing System and Its Usage Method". However, existing technical solutions mainly modify vertical slotted fishways into fish-attracting and short-distance upstream swimming systems. Furthermore, the channels connecting to the fish transfer system have not been specifically developed and designed for the tourism and scenic functions of conventional vertical slit-style long fishways. In addition, the issue of staggered evacuation of high-density fish populations within the fishway during peak fish passage periods has not been considered. For example, in the Shaliu River in Qinghai Province, the low-head fishway specifically built for Qinghai naked carp was designed to have a fish passage capacity of 30 fish / min. Actual measurement results show that during peak fish passage periods, the number of naked carp broodstock passing through the fishway upstream reaches 37-39 fish / min. During some periods, the high density of fish populations leads to a decrease in fish passage efficiency, and the narrow space within the fishway may reduce the survival rate of the fish population.

[0004] To further explore the tourism landscape function of vertical slotted fishways and improve the efficiency of fish attraction, dispersal, and transfer during peak fish passage periods, a vertical slotted fishway with tourism and sightseeing functions and its operation method are proposed, so as to further improve the technical system of landscape tourism fish passage facilities. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the present invention provides a vertical slotted fishway with tourism and sightseeing functions and its operation method.

[0006] This invention is achieved through the following technical solution:

[0007] A vertical slotted fishway with tourism and sightseeing functions includes a dam body, a vertical slotted fishway, a landscape tourism system, and a fish transfer system. The vertical slotted fishway is located on one side of the dam body and passes through the dam body. The landscape tourism system and the fish transfer system are both located on the vertical slotted fishway.

[0008] The vertical slotted fishway includes a fishway base plate and two side walls arranged side by side on the fishway base plate. The fishway base plate, the side walls, and the side walls enclose the fishway pool. Multiple fishway guide plates are arranged side by side on the side walls, and multiple fishway partitions are arranged side by side on the side walls. The fishway guide plates and fishway partitions are staggered.

[0009] The landscape tourism system includes several running tracks, several ramp elevators, and several viewing platforms. The running tracks and ramp elevators are arranged side by side on the straight sections of the vertical slot fishway, with one side of the running track and one side of the ramp elevator close to each other. Several viewing platforms are located on the turning sections of the vertical slot fishway, and the viewing platforms connect two adjacent running tracks and two adjacent ramp elevators.

[0010] The running track is a plastic running track, located on the water-facing side of the water-facing wall, and the bottom of the running track is connected to the water-facing wall through a support frame.

[0011] Both sides of the track are equipped with track railings, and the inside of the track railings is equipped with a waterproof electronic display screen.

[0012] The ramp elevator is located on the back side of the water-facing wall and is installed on the fishway guide plate. The side of the ramp elevator away from the runway is equipped with an elevator railing.

[0013] Bamboo railings are installed on both sides of the viewing platform.

[0014] The fish transfer system includes a fish transfer mechanism and a water replenishment component. The fish transfer mechanism is located on the water-facing side of the backwater sidewall and above the fish passage partition. A transfer groove is provided on the backwater sidewall, and one side of the transfer groove is connected to the fish passage chamber. One end of the water replenishment component is connected to the transfer groove, and the other end extends directly above the fish transfer mechanism.

[0015] The fish transfer mechanism includes a drive motor, a drive sprocket, a driven sprocket, and multiple fish transfer boxes. The drive motor is fixedly mounted on the backwater side wall. The drive sprocket is mounted on the output shaft of the drive motor. The driven sprocket is rotatably connected to the backwater side wall through a driven shaft, and the driven sprocket is connected to the drive sprocket via a chain. Two rails are arranged side by side on the backwater side wall, located between the drive sprocket and the driven sprocket. The rails are made of C-shaped steel, and the middle part of the chain is located inside the rails. Multiple fish transfer boxes are connected to the chain.

[0016] The chain is circular and includes multiple connecting modules that are connected end to end. Each connecting module includes an inner chain plate and two outer chain plates. The two ends of the two outer chain plates are connected by a rotating shaft C, and the outer chain plates have meshing holes. One end of the inner chain plate is rotatably connected to one of the rotating shafts C, and the inner chain plate is located between the two outer chain plates. The inner chain plate is broken into two halves in the middle, and the two halves of the inner chain plate are rotatably connected by a rotating shaft B.

[0017] Multiple support rollers are arranged side by side on the bottom surface inside the track;

[0018] The water replenishment component includes a pipe with a water pump installed on it. Part of the pipe is buried in the back wall. The inlet of the pipe is connected to the transfer groove, and a fish net is installed at the inlet. The outlet of the pipe faces downward and extends to the top of the transfer groove.

[0019] The fish transport box includes a fixed casing and a fish-filling box. A support sleeve is fixedly installed on one side wall of the fixed casing. The support sleeve is rotatably connected to one end of one of the rotating shafts B in the chain. The fish-filling box has an opening on the upper side and a counterweight plate at the bottom. The fish-filling box is located below the fixed casing and is connected to the fixed casing via multiple electric cylinders. A fish passage opening is provided on the lower part of the side of the fish-filling box near the fish passage chamber. A water-permeable net is provided above the fish passage opening, and a lightweight baffle is connected to the lower part of the fish passage opening via a rotating shaft A. A water passage opening is provided on the opposite side of the fish passage opening, and a fish-blocking net is installed at the water passage opening. A fish-attracting light and a fish-repelling light are installed inside the fish-filling box.

[0020] A method for operating a vertical slotted fishway with tourism and sightseeing functions includes the following steps:

[0021] Step 1: When tourists visit, activate the ramp elevator. Tourists can enjoy the views of mountains and rivers, as well as the operation of the power station and fishway from the runway or ramp elevator.

[0022] Step 2: During non-peak fish passage periods, fish downstream of the dam migrate to the upstream of the dam via the vertical slotted fishway, thus achieving fish passage.

[0023] Step 3: During peak fish passage period, activate the fish transfer system. The fish transfer system works in conjunction with the vertical slotted fishway to facilitate fish passage between the upstream and downstream sides of the dam.

[0024] The operation method of the fish transfer system includes the following steps:

[0025] A. Start the drive motor. The drive motor drives the chain and driven sprocket to rotate through the drive sprocket, and the chain drives the fish transport box to move.

[0026] B. When a fish transfer box is aligned with a transfer groove downstream of the dam, the drive motor is turned off, the electric cylinder in the fish transfer box is activated, and the fish box is pushed down into the transfer groove. The lightweight baffle rotates around the rotating shaft A into the fish box under the action of water pressure and is in an open state.

[0027] C. The water pump starts. Under the action of the water pump, the water in the fish tank in step B enters the pipe and then sprays out from the drain outlet of the pipe. At the same time, the water in the fish passage pool flows into the fish tank to replenish it, so as to form a water flow to attract fish in the fish passage pool to enter the fish tank and keep the lightweight baffle open. During this process, the fish barrier net can block the fish in the transfer fish tank and prevent the fish from being sucked into the pipe. At the same time, the fish attraction light in the fish tank is turned on to further attract fish into the fish tank.

[0028] D. The electric cylinder operates, lifting the fish tank from step C above the fish passage partition. Excess water in the fish tank flows out through the permeable net. The water pump is turned off, and the lightweight baffle loses the suction effect of the water pump. Under the action of water pressure in the fish tank, it rotates downward around the rotating shaft A, closing the lower part of the fish mouth. Then, the fish-attracting light in the fish tank is turned off.

[0029] E. Repeat steps A to D intermittently to transport fish from downstream of the dam to upstream of the dam. When the fish transfer box is moved directly below the drain outlet of the pipe, water in the pipe is sprayed into the fish transfer box.

[0030] F. When a fish transfer box is aligned with the upstream transfer groove, the drive motor is turned off, and the water pump on the pipe connected to the transfer groove is also turned off. The electric cylinder in the fish transfer box is activated, pushing the fish box body downward into the transfer groove. The lightweight baffle rotates around the rotating shaft A into the fish box body under the action of water pressure and is in an open state. Then the fish-repelling light in the fish box body is turned on, driving the fish into the fish passage pool. After that, the fish can continue to swim upstream along the vertical slit fish passage and enter the upstream water of the dam through the fish passage outlet.

[0031] G. The electric cylinder operates, lifting the fish-loading box from step F above the fish passage partition. Excess water in the fish-loading box flows out through the permeable net. The lightweight baffle rotates downward around axis A under the action of water pressure in the fish-loading box, closing the lower part of the fish mouth. At the same time, the fish-repelling light in the fish-loading box is turned off. Then, the fish that need to go from upstream to downstream are put into the fish-loading box.

[0032] The beneficial effects of this invention are as follows:

[0033] 1. Deeply explore the functional benefits of vertical slot fish passages: As the most widely used fish passage facility in China, vertical slot fish passages have only considered the function of providing passage for fish in the past design and application. This application incorporates a landscape tourism system, integrating tourism design concepts into vertical slotted fishways. Specifically, a ramp is installed above the fishway guide rails and fishway pool, with a running track on the water-facing side of the ramp, providing sightseeing facilities with different experiences for tourists and local residents. Waterproof electronic display screens are installed inside the running track railings, capable of playing promotional videos on river systems, hydropower development, or fish conservation projects, providing tourists with science and news exhibitions. The landscape tourism system can be applied to both newly constructed vertical slotted fishways in water conservancy and hydropower projects and existing vertical slotted fishways without tourism functions. Installing a landscape tourism system on the cascade vertical slotted fishways of watershed hydropower projects can form a fishway tourism network that connects points to lines and combines points, lines, and surfaces, deeply exploring the tourism functions of vertical slotted fishways. It can also generate revenue for scenic areas through the layout of the tourism network, realizing ecological, social, and economic benefits for fish passage facilities.

[0034] 2. Innovation enhances the efficiency of vertical slotted fishway transfer: The fish transfer system has the advantages of novel structure, flexible fish transfer, and high transfer efficiency. It adds the function of peak-hour evacuation and transfer to the vertical slotted fishway, and also has a certain ornamental value, which can further enhance the tourism benefits of the fishway.

[0035] 3. Ingenious Solution to the Problem of Fish Gathering in Transfer Fish Boxes: As the fish box sinks into the transfer groove, the lightweight baffle rotates around axis A and opens under the combined action of water pump suction and water pressure, automatically opening the channel for fish to enter the fish box. After the water pump starts, water from the fish passage chamber flows into the fish box to replenish it, creating a water flow that attracts fish from the fish passage chamber into the fish box, keeping the lightweight baffle open. As the fish box is lifted upwards, the water pump is turned off, and excess water in the fish box flows out through the permeable net. The lightweight baffle loses the suction of the water pump and, under the action of water pressure and its own weight inside the fish box, rotates downwards around axis A and closes. By using the operation of the water pump and changes in water pressure to drive the lightweight baffle to automatically open and close, the problem of human interference during the attraction and dispersal of fish in the transfer fish box is cleverly solved, while further improving the working efficiency of the transfer fish box. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the structure of the present invention;

[0037] Figure 2 This is a schematic diagram of the assembly structure of the vertical slotted fishway, landscape tourism system, and fish transfer system of the present invention.

[0038] Figure 3This is a schematic diagram of the assembly structure of the viewing platform, two running tracks, and two ramp elevators of the present invention.

[0039] Figure 4 This is a longitudinal sectional view of the straight section of the vertical slit fish passage when the electric cylinder of the present invention lifts the fish box upwards;

[0040] Figure 5 This is a longitudinal sectional view of the straight section of the vertical slit fishway when the electric cylinder of the present invention pushes the fish box body downward into the transfer groove.

[0041] Figure 6 This is a schematic diagram of the structure of the fish transfer box when the electric cylinder of the present invention pushes the fish box body downwards;

[0042] Figure 7 This is a partial schematic diagram of the fish transport box of the present invention;

[0043] Figure 8 This is a schematic diagram of the structure of the electric cylinder of the present invention for lifting the fish box upward and then transferring the fish box;

[0044] Figure 9 This is a schematic diagram of the structure of the fish transport box of the present invention, in which a counterweight plate is installed inside.

[0045] Figure 10 This is a schematic diagram of the water replenishment component of the present invention;

[0046] Figure 11 This is a partial cross-sectional schematic diagram of the present invention;

[0047] Figure 12 This is a schematic diagram of the fish transport system of the present invention;

[0048] Figure 13 This is a schematic diagram of the assembly structure of the track, chain, drive sprocket, and driven sprocket of the present invention;

[0049] Figure 14 This is a partial schematic diagram of the chain of the present invention;

[0050] Figure 15 This is a schematic diagram of the assembly structure of the fish transport box, chain, and track of the present invention;

[0051] Figure 16 This is a schematic diagram of the track structure of the present invention;

[0052] Figure 17 This is a schematic diagram of the assembly structure of the support sleeve, rotating shaft B, and fish transport box of the present invention;

[0053] Figure 18 This is a schematic diagram of the assembly structure of the support sleeve and the rotating shaft B of the present invention.

[0054] In the diagram: 1-Dam body, 2-Vertical slotted fishway, 201-Waterfront sidewall, 202-Fishway guide plate, 203-Fishway partition, 204-Backwater sidewall, 205-Fishway pool, 206-Fishway base, 3-Landscape tourism system, 301-Runway, 302-Support, 303-Runway railing, 304-Waterproof electronic display screen, 305-Slope elevator, 306-Elevator railing, 307-Bamboo railing, 308-Viewing platform, 4-Fish transfer system, 401-Transfer groove. 402-Fish barrier net, 403-Fish transfer box, 404-Fixed sleeve, 405-Lightweight baffle, 406-Shaft A, 407-Permeable net, 408-Electric cylinder, 409-Railway, 411-Pipe, 412-Drain outlet, 415-Drive sprocket, 416-Shaft B, 417-Inner chain plate, 418-Outer chain plate, 419-Shaft C, 420-Meshing hole, 424-Support sleeve, 425-Driven sprocket, 426-Chain, 427-Support roller, 428-Counterweight plate. Detailed Implementation

[0055] The technical solution of the present invention is further described below, but the scope of protection is not limited to what is described.

[0056] like Figures 1 to 18 As shown, the present invention provides a vertical slotted fishway with tourism and sightseeing functions, comprising a dam body 1, a vertical slotted fishway 2, a landscape tourism system 3, and a fish transfer system 4. The vertical slotted fishway 2 is located on one side of the dam body 1 and passes through the dam body 1. The landscape tourism system 3 and the fish transfer system 4 are both installed on the vertical slotted fishway 2.

[0057] The vertical slotted fishway 2 includes a fishway base plate 206 and two side walls 201 and 204 built side-by-side on the base plate 206. The base plate 206, side walls 201, and 204 enclose a fishway chamber 205. Multiple fishway guide plates 202 are built side-by-side on the side walls 201, and multiple fishway partitions 203 are built side-by-side on the retardant side walls 204. The guide plates 202 and partitions 203 are staggered. The vertical slotted fishway 2 is a conventional vertical slotted fishway.

[0058] The landscape tourism system 3 includes multiple runways 301, multiple ramp elevators 305, and multiple viewing platforms 308. The runways 301 and ramp elevators 305 are installed side-by-side on the straight sections of the vertical slotted fishway 2, with one side of the runway 301 and one side of the ramp elevator 305 close to each other. The viewing platforms 308 are installed on the turning sections of the vertical slotted fishway 2, connecting two adjacent runway sections 301 and two adjacent ramp elevators 305. In use, the ramp elevators 305 have a slope similar to that of the fishway pool chamber 205, providing a convenient elevator for tourists to enjoy the scenery. The viewing platforms 308 separate the runway sections 301 and the ramp elevators 305, and can be equipped with information boards or benches, providing a place for tourists and local residents to relax and enjoy their visit.

[0059] The running track 301 is a plastic running track, which is installed on the water-facing side of the water-facing wall 201, and the bottom of the running track 301 is connected to the water-facing wall 201 through the bracket 302.

[0060] Both sides of the track 301 are equipped with track railings 303, and a waterproof electronic display screen 304 is installed on the inner side of the track railings 303.

[0061] The ramp elevator 305 is installed on the back side of the water-facing wall 201 and on the fishway guide plate 202. An elevator railing 306 is installed on the side of the ramp elevator 305 away from the runway 301.

[0062] Bamboo railings 307 are installed on both sides of the viewing platform 308. When in use, tourists or nearby residents can choose to walk, jog, or exercise on the running track 301, whose railings 303 are made of stainless steel. The waterproof electronic display screen 304 can play promotional videos about river systems, hydropower development, or fish conservation projects, providing tourists with science and news exhibitions, while also enhancing the power station's social impact and economic benefits.

[0063] The fish transfer system 4 includes a fish transfer mechanism and a water replenishment component. The fish transfer mechanism is installed on the water-facing side of the backwater sidewall 204 and is located above the fish passage partition 203. A transfer groove 401 is built on the backwater sidewall 204, and one side of the transfer groove 401 is connected to the fish passage chamber 205. One end of the water replenishment component is connected to the transfer groove 401, and the other end extends to the top of the fish transfer mechanism.

[0064] The fish transfer mechanism includes a drive motor, a drive sprocket 415, a driven sprocket 425, and multiple fish transfer boxes 403. The drive motor is fixedly mounted on the backwater sidewall 204. The drive sprocket 415 is mounted on the output shaft of the drive motor. The driven sprocket 425 is rotatably connected to the backwater sidewall 204 via a driven shaft and is driven by a chain 426. Two rails 409 are installed side-by-side on the backwater sidewall 204, located between the drive sprocket 415 and the driven sprocket 425. The rails 409 are made of C-shaped steel, and the middle part of the chain 426 is located within the rails 409. The multiple fish transfer boxes 403 are all connected to the chain 426. The middle part of the chain 426 is limited by the rails 409.

[0065] The chain 426 is ring-shaped and includes multiple connecting modules connected end to end. Each connecting module includes an inner chain plate 417 and two outer chain plates 418. The two ends of the two outer chain plates 418 are connected by a rotating shaft C419, and the outer chain plates 418 are provided with meshing holes 420. One end of the inner chain plate 417 is rotatably connected to one of the rotating shafts C419, and the inner chain plate 417 is located between the two outer chain plates 418. The inner chain plate 417 is broken into two halves in the middle, and the two halves of the inner chain plate 417 are rotatably connected by a rotating shaft B416. The inner chain plate 417 and the outer chain plate 418 are rotatably connected by a rotating shaft C419, which can meet the requirement of the chain 426 turning with the vertical slotted fishway 2; the two halves of the inner chain plate are rotatably connected by a rotating shaft B416, and the outer chain plate 418 is provided with a meshing hole 420, which can meet the requirement of the chain 426 meshing with the drive sprocket 415 and the driven sprocket 425.

[0066] Multiple support rollers 427 are installed side by side on the bottom surface of the inner side of the track 409. The support rollers 427 reduce the friction between the chain 426 and the track 409, thereby extending the service life of the chain 426.

[0067] The water replenishment component includes a pipe 411 with a water pump installed on it. Part of the pipe 411 is embedded in the backwater sidewall 204. The inlet of the pipe 411 is connected to the transfer groove 401, and a fish-blocking net 402 is installed at the inlet. The outlet 412 of the pipe 411 faces downwards and extends directly above the transfer groove 401. The water replenishment component has two functions: first, when the fish tank is lowered into the transfer groove 401, the water pump creates a directional water flow from the fish passage chamber 205 to the fish tank, attracting some fish from the fish passage chamber 205 into the fish tank; second, when the transfer fish tank 403 passes under the outlet 412, water is replenished into the transfer fish tank 403, increasing the oxygen content and ensuring the survival rate of the fish in the transfer fish tank 403.

[0068] The fish transport box 403 includes a fixed sleeve 404 and a fish-filling box body. A support sleeve 424 is fixedly welded to one side wall of the fixed sleeve 404. The support sleeve 424 is rotatably connected to one end of one of the rotating shafts B416 inside the chain 426. The upper side of the fish-filling box body is open, and a counterweight plate 428 is installed at the bottom of the fish-filling box body. The fish-filling box body is located below the fixed sleeve 404, and the fish-filling box body is connected to the fixed sleeve 404 through multiple electric cylinders 408. The lower part of the fish tank near the fish passage chamber 205 has a fish passage opening. A water-permeable net 407 is provided above the fish passage opening. A lightweight baffle 405 is connected to the lower part of the fish passage opening via a pivot A406. A water passage opening is provided on the opposite side of the fish passage opening on the fish tank, and a fish-blocking net 402 is installed at the water passage opening. The fish-blocking net 402 can block the fish in the transfer fish tank 403 and prevent the fish from being sucked into the pipe 411. The fish tank is equipped with a fish-attracting light and a fish-repelling light. In use, the support sleeve 424 has a T-shaped stepped hole inside. One end of the rotating shaft B416 has a stepped structure that matches the shape and size of the stepped hole. The stepped structure extends into the stepped hole and is rotatably connected to it. Based on this, a counterweight plate 428 is installed at the bottom of the fish tank, similar to the principle of a self-righting toy, ensuring that the open side of the fish tank always faces upwards. This facilitates the transfer of fish downstream of dam 1 to upstream and vice versa. Excess water in the fish tank is drained through the permeable net 407 to prevent the water level from becoming too high, thus helping to ensure the survival rate of the fish in the fish tank.

[0069] A method for operating a vertical slotted fishway with tourism and sightseeing functions includes the following steps:

[0070] Step 1: When tourists visit, activate ramp 305. Tourists can enjoy the views of mountains and rivers, as well as the operation of the power station and fishway from runway 301 or ramp 305.

[0071] Step 2: During non-peak fish passage periods, fish downstream of dam 1 migrate to upstream of dam 1 via vertical slotted fishway 2, thus achieving fish passage.

[0072] Step 3: During the peak fish passage period, activate the fish transfer system 4. The fish transfer system 4 works in conjunction with the vertical slotted fishway 2 to facilitate fish passage between the upstream and downstream sides of the dam body 1.

[0073] The operation method of the fish transfer system 4 includes the following steps:

[0074] A. Start the drive motor. The drive motor drives the chain 426 and the driven chain 425 to rotate through the active sprocket 415. The chain 426 drives the fish transfer box 403 to move.

[0075] B. When a certain fish transfer box 403 is aligned with a certain transfer groove 401 downstream of the dam body 1, the drive motor is turned off, the electric cylinder 408 in the fish transfer box 403 is activated, and the fish box body is pushed down into the transfer groove 401. The lightweight baffle 405 rotates around the rotating shaft A406 into the fish box body under the action of water pressure and is in an open state.

[0076] C. The water pump starts. Under the action of the water pump, the water in the fish tank in step B enters the pipe 411 and then sprays out from the drain 412 of the pipe 411. At the same time, the water in the fish passage chamber 205 flows into the fish tank to replenish it, so as to form a water flow to attract the fish in the fish passage chamber 205 into the fish tank and keep the lightweight baffle 405 open. During this process, the fish net 402 can block the fish in the transfer fish box 403 to prevent the fish from being sucked into the pipe 411. At the same time, the fish attraction light in the fish tank is turned on to further attract fish into the fish tank.

[0077] D. When the electric cylinder 408 is activated, the fish tank in step C is lifted above the fish passage partition 203. Excess water in the fish tank flows out through the permeable net 407. The water pump is turned off, and the lightweight baffle 405 loses the suction effect of the water pump. Under the action of the water pressure in the fish tank, it rotates downward around the rotating shaft A406 to close the lower part of the fish mouth. Then the fish attracting light in the fish tank is turned off.

[0078] E. Repeat steps A to D to intermittently transport fish from the downstream of the dam to the upstream of the dam. When the fish transfer box 403 is moved directly below the drain outlet 412 of the pipe 411, the water in the pipe 411 is sprayed into the fish transfer box 403.

[0079] F. When a fish transfer box 403 is aligned with the upstream transfer groove 401, the drive motor is turned off, and the water pump on the pipe 411 connected to the transfer groove 401 is also turned off. The electric cylinder 408 in the fish transfer box 403 is activated, pushing the fish box body downward into the transfer groove 401. The lightweight baffle 405 rotates around the rotating shaft A406 into the fish box body under the action of water pressure and is in an open state. Then the fish-repelling light in the fish box body is turned on, driving the fish into the fish passage pool 205. After that, the fish can continue to swim upstream along the vertical slit fish passage 2 and enter the upstream water of the dam body 1 through the fish passage outlet.

[0080] G. When the electric cylinder 408 is activated, the fish-loading box from step F is lifted above the fish passage partition 203. Excess water in the fish-loading box flows out through the permeable net 407. The lightweight baffle 405 rotates downward around the pivot A406 under the action of water pressure in the fish-loading box, closing the lower part of the fish mouth. At the same time, the fish-repelling light in the fish-loading box is turned off. Then, the fish that need to go from upstream to downstream are put into the fish-loading box.

[0081] Specifically, the vertical slotted fishway, which has tourism and sightseeing functions, can be connected to the power station's central control system, so that it can be uniformly scheduled and operated through the power station's central control system.

Claims

1. A vertical slotted fishway with tourism and sightseeing functions, characterized in that: It includes a dam body (1), a vertical slot fishway (2), a landscape tourism system (3) and a fish transfer system (4). The vertical slot fishway (2) is located on one side of the dam body (1) and passes through the dam body (1). The landscape tourism system (3) and the fish transfer system (4) are both located on the vertical slot fishway (2). The vertical slotted fishway (2) includes a fishway bottom plate (206) and a water-facing side wall (201) and a back-water side wall (204) arranged side by side on the fishway bottom plate (206). The fishway bottom plate (206), the water-facing side wall (201) and the back-water side wall (204) enclose a fishway pool (205). Multiple fishway guide plates (202) are arranged side by side on the water-facing side wall (201), and multiple fishway partition plates (203) are arranged side by side on the back-water side wall (204). The fishway guide plates (202) and the fishway partition plates (203) are staggered. The landscape tourism system (3) includes several sections of running track (301), several ramp elevators (305) and several viewing platforms (308). The running track (301) and the ramp elevators (305) are arranged side by side on the straight section of the vertical slot fishway (2), and one side of the running track (301) and one side of the ramp elevator (305) are close to each other. Several viewing platforms (308) are located on the turning section of the vertical slot fishway (2), and the viewing platform (308) connects two adjacent sections of running track (301) and two adjacent ramp elevators (305).

2. The vertical slotted fishway with tourism and sightseeing functions as described in claim 1, characterized in that: The running track (301) is a plastic running track, located on the water-facing side of the water-facing wall (201), and the bottom of the running track (301) is connected to the water-facing wall (201) through a bracket (302); Both sides of the track (301) are provided with track railings (303), and the inner side of the track railings (303) is provided with a waterproof electronic display screen (304). The ramp elevator (305) is located on the back side of the water-facing wall (201) and on the fishway guide plate (202). The ramp elevator (305) is equipped with an elevator railing (306) on the side away from the runway (301). Bamboo railings (307) are provided on both sides of the viewing platform (308).

3. The vertical slotted fishway with tourism and sightseeing functions as described in claim 1, characterized in that: The fish transfer system (4) includes a fish transfer mechanism and a water replenishment component. The fish transfer mechanism is located on the water-facing side of the backwater sidewall (204) and above the fish passage partition (203). The backwater sidewall (204) is provided with a transfer groove (401), and one side of the transfer groove (401) is connected to the fish passage chamber (205). One end of the water replenishment component is connected to the transfer groove (401), and the other end extends to the top of the fish transfer mechanism.

4. The vertical slotted fishway with tourism and sightseeing functions as described in claim 3, characterized in that: The fish transfer mechanism includes a drive motor, a drive sprocket (415), a driven sprocket (425), and multiple fish transfer boxes (403). The drive motor is fixed on the backwater sidewall (204). The drive sprocket (415) is mounted on the output shaft of the drive motor. The driven sprocket (425) is rotatably connected to the backwater sidewall (204) through a driven shaft. The driven sprocket (425) is connected to the drive sprocket (415) through a chain (426). Two rails (409) are arranged side by side on the backwater sidewall (204). The two rails (409) are located between the drive sprocket (415) and the driven sprocket (425). The rails (409) are made of C-shaped steel. The middle part of the chain (426) is located inside the rail (409). Multiple fish transfer boxes (403) are all connected to the chain (426).

5. The vertical slotted fishway with tourism and sightseeing functions as described in claim 4, characterized in that: The chain (426) is ring-shaped and includes multiple connecting modules that are connected end to end in sequence. Each connecting module includes an inner chain plate (417) and two outer chain plates (418). The two ends of the two outer chain plates (418) are connected by a rotating shaft C (419) respectively. The outer chain plate (418) is provided with a meshing hole (420). One end of the inner chain plate (417) is rotatably connected to one of the rotating shafts C (419). The inner chain plate (417) is located between the two outer chain plates (418). The inner chain plate (417) is broken into two halves in the middle. The two halves of the inner chain plate (417) are rotatably connected by a rotating shaft B (416). Multiple support rollers (427) are arranged side by side on the bottom surface inside the track (409). The water replenishment component includes a pipe (411), a water pump is installed on the pipe (411), part of the pipe (411) is buried in the back wall (204), the water inlet of the pipe (411) is connected to the transfer groove (401), and a fish net (402) is installed at the water inlet. The drain outlet (412) of the pipe (411) faces downward and extends to the top of the transfer groove (401).

6. The vertical slotted fishway with tourism and sightseeing functions as described in claim 5, characterized in that: The fish transport box (403) includes a fixed sleeve (404) and a fish-filling box body. A support sleeve (424) is fixedly provided on one side wall of the fixed sleeve (404). The support sleeve (424) is rotatably connected to one end of one of the rotating shafts B (416) inside the chain (426). The upper side of the fish-filling box body is open, and a counterweight plate (428) is provided at the bottom of the fish-filling box body. The fish-filling box body is located below the fixed sleeve (404), and the fish-filling box body is connected to the fixed sleeve (404) through the chain (426). Multiple electric cylinders (408) are connected to a fixed box (404). A fish passage opening is provided on the lower part of the side of the fish tank near the fish passage chamber (205). A water-permeable net (407) is provided on the upper part of the fish passage opening. A lightweight baffle (405) is connected to the lower part of the fish passage opening through a rotating shaft A (406). A water passage opening is provided on the opposite side of the fish passage opening on the fish tank, and a fish-blocking net (402) is installed at the water passage opening. A fish-attracting lamp and a fish-repelling lamp are provided inside the fish tank.

7. A method for operating a vertical slotted fishway with tourism and sightseeing functions as described in any one of claims 1 to 6, characterized in that: Includes the following steps: Step 1: When tourists visit, start the ramp elevator (305). Tourists can enjoy the scenery of mountains and rivers, as well as the operation of the power station and fishway, from the runway (301) or the ramp elevator (305). Step 2: During non-peak fish passage periods, fish downstream of the dam (1) migrate to the upstream of the dam (1) via the vertical slotted fishway (2) to pass through the dam (1); Step 3: During the peak fish passage period, start the fish transfer system (4). The fish transfer system (4) works in conjunction with the vertical slot fishway (2) to enable fish to pass through the upstream and downstream of the dam (1).

8. The method for operating a vertical slotted fishway with tourism and sightseeing functions as described in claim 7, characterized in that: The operation method of the fish transfer system (4) includes the following steps: A. Start the drive motor. The drive motor drives the chain (426) and the driven chain (425) to rotate through the active sprocket (415). The chain (426) drives the transfer fish box (403) to move. B. When a certain fish transfer box (403) is aligned with a certain transfer groove (401) downstream of the dam body (1), the drive motor is turned off, the electric cylinder (408) in the fish transfer box (403) is activated, and the fish box body is pushed down into the transfer groove (401). The lightweight baffle (405) rotates around the rotating shaft A (406) into the fish box body under the action of water pressure and is in an open state. C. The water pump starts. Under the action of the water pump, the water in the fish tank in step B enters the pipe (411) and then sprays out from the drain (412) of the pipe (411). At the same time, the water in the fish passage pool (205) flows into the fish tank to replenish it, so as to form a water flow to attract the fish in the fish passage pool (205) into the fish tank and keep the lightweight baffle (405) open. During this process, the fish net (402) can block the fish in the transfer fish box (403) to prevent the fish from being sucked into the pipe (411). At the same time, the fish-attracting lamp in the fish tank is turned on to further attract fish into the fish tank. D. The electric cylinder (408) is activated, lifting the fish tank in step C above the fish passage partition (203). Excess water in the fish tank flows out through the permeable net (407). The water pump is turned off, and the lightweight baffle (405) loses the suction effect of the water pump. Under the action of the water pressure in the fish tank, it rotates downward around the rotating shaft A (406) to close the lower part of the fish mouth. Then the fish-attracting light in the fish tank is turned off. E. Repeat steps A to D to intermittently transport fish from the downstream of the dam to the upstream of the dam. When the transfer fish box (403) is moved directly below the drain outlet (412) of the pipe (411), the water in the pipe (411) is sprayed into the transfer fish box (403). F. When a fish transfer box (403) is aligned with the upstream transfer groove (401), the drive motor is turned off, and the water pump on the pipe (411) connected to the transfer groove (401) is turned off. The electric cylinder (408) in the fish transfer box (403) is activated, pushing the fish box body downward into the transfer groove (401). The lightweight baffle (405) rotates around the rotating shaft A (406) into the fish box body under the action of water pressure and is in an open state. Then the fish-driving light in the fish box body is turned on, driving the fish into the fish passage pool (205). After that, the fish can continue to go upstream along the vertical slit fish passage (2) and enter the upstream water of the dam body (1) through the fish passage outlet. G. The electric cylinder (408) is activated, lifting the fish box from step F above the fish passage partition (203). Excess water in the fish box flows out through the permeable net (407). The lightweight baffle (405) rotates downward around the rotating shaft A (406) under the action of water pressure in the fish box, closing the lower part of the fish mouth. At the same time, the fish-repelling light in the fish box is turned off. Then, the fish that need to go from upstream to downstream are put into the fish box.

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