Fish collecting system

Abstract

The utility model provides a fish collecting system. The fish collecting system comprises a fish collecting tank and a power system used for generating water flow in the fish collecting tank, a plurality of water inlet holes and water outlet holes are evenly distributed in the side wall forming the fish collecting tank, and the power system comprises a water pump, a water inlet pipe used for connecting the water inlet holes and the water pump and a water outlet pipe used for connecting the water pump and the water outlet holes. And the water outlet holes are communicated with the interior of the fish collecting tank. The water pump is adopted to provide moving water to form a fish luring flow field, a natural drainage mode in the prior art is changed, the flow speed of the flow field is controllable, fishes gathered near tail water or in other fish enrichment areas are induced to enter the fish collecting tank to a great extent, and the fish collecting efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of artificial water flow fish luring, in particular to a fish gathering system. Background Art

[0002] As a renewable clean energy, water conservancy and hydropower projects have huge economic and social benefits such as flood control, power generation, shipping, and emission reduction, but at the same time they have a great negative impact on the river's ecological environment. Engineering hubs inevitably destroy the connectivity of rivers, block fish migration channels, block fish gene exchange, and cause damage to ecological diversity. Therefore, it is very necessary to design and build fishways, simulated natural channels, fish lifts, fish locks, fish collection and transportation systems, or fish passing facilities in different combinations for the purpose of protecting fish resources.

[0003] The fish gathering system is an important part of the fish passing facilities. At present, the fish attracting methods used by the fish gathering system mainly include water flow attracting, sound attracting, light attracting, smell attracting, bubble curtain attracting, etc. Relatively speaking, based on the behavioral characteristics of fish that move against the current, using water flow attracting is the most effective way to gather fish.

[0004] The water flow fish luring method usually uses the tailwater of power generation flowing through the fish collection system (fish collection trough) with a certain speed to induce fish into the fish collection box. The fish collection system using the water flow luring method needs to be arranged in conjunction with the power station hub, and is generally arranged in the downstream area of ​​the tailwater of the power station. Due to the restrictions of the river terrain and geological conditions and water flow conditions, the flow velocity / flow rate of the water flowing through the fish collection system (fish collection trough) is much lower than the flow velocity / flow rate of the power generation tailwater. Fish are often attracted by the power generation tailwater and eventually gather near the tailwater instead of the fish collection system (fish collection trough), resulting in low fish collection efficiency; in the reservoir area or the river with a slow flow rate, the water flow under natural conditions is difficult to meet the requirements of water flow luring. How to improve the efficiency of fish collection is an urgent problem to be solved in the design and construction of fish collection systems. Utility Model Content

[0005] The utility model aims to provide a fish gathering system to improve the fish gathering efficiency.

[0006] The technical solution of the utility model is: a fish collecting system, including a fish collecting trough, a power system for generating water flow in the fish collecting trough, forming a plurality of water inlet holes and water outlet holes evenly distributed on the side wall of the fish collecting trough, the power system includes a water pump, a water inlet pipe for connecting the water inlet hole and the water pump, and a water outlet pipe for connecting the water pump and the water outlet hole, and the water outlet hole is communicated with the inside of the fish collecting trough.

[0007] In the above scheme, a water pump is used to provide moving water to form a fish-attracting flow field, changing the natural drainage method of the existing technology. The flow rate of the flow field is controllable, which can greatly induce the fish gathered near the tailwater or other fish-enriched areas to enter the fish collecting tank, thereby improving the fish collecting efficiency.

[0008] Preferably, a fish collecting box and a plurality of partitions are provided in the length direction of the fish collecting trough. The partitions are located at one or both ends of the fish collecting box. The partitions are provided with vertical slits that pass through the water flow from top to bottom, and a gap L is formed between every two partitions.

[0009] Preferably, the vertical slits on the plurality of partitions are staggered.

[0010] Preferably, the fish collecting system further comprises a lifting system for lifting or placing the fish collecting box in the fish collecting tank.

[0011] Preferably, the interval L is equal to 0.8-1.5 m.

[0012] In a technical solution, the fish collecting tank includes two spaced-apart side walls, an end wall connected to one end of the two side walls, and a bottom plate connected to the bottom of the two side walls; the other ends of the two side walls form an opening; at least one water inlet is provided on a side of each side wall close to the opening; and the water outlets are evenly distributed on the side wall and the end wall; the partition is located at one end of the fish collecting box, the partition is close to the opening, and the partition is connected between the two side walls.

[0013] In another technical solution, the fish collecting tank includes two spaced-apart side walls and a bottom plate connected to the bottom of the two side walls, both ends of the two side walls are open, the water inlet holes are arranged at the ends of the side walls, and the water outlet holes are evenly distributed on the side walls; the partition is located at both ends of the fish collecting box, and the partition is connected between the two side walls.

[0014] Compared with the related art, the beneficial effects of the utility model are:

[0015] 1. Use a water pump to drive the water flow in the fish collecting tank, change the natural drainage method of the existing technology, so that an artificial water flow field is formed in the fish collecting tank for fish to flow headlong, and the flow rate of the flow field is controllable, which can greatly induce the fish gathered near the tailwater or other fish-rich areas to enter the fish collecting tank, thereby improving the fish collecting efficiency. It is especially suitable for fish gathering areas in reservoir areas and rivers with slow water flow rates;

[0016] 2. The water outlet holes in the fish collecting tank are evenly arranged, which provides a uniform flow field for attracting fish in the fish collecting tank;

[0017] 3. The vertical slits on multiple partitions are staggered to form multi-directional water flow, which can effectively improve the efficiency of attracting fish. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the top view of the fish gathering system according to the first embodiment of the present invention;

[0019] Figure 2 for Figure 1 A schematic diagram of a front cross-sectional structure;

[0020] Figure 3 This is a schematic diagram of the top structure of the fish gathering system of Example 2 provided by the utility model.

[0021] In the attached figure: 1. fish collecting trough; 11. bottom plate; 12. side wall; 13. end wall; 14. partition; 15. water inlet hole; 16. water outlet hole; 17. opening; 18. vertical seam; 2. fish collecting box; 3. power system; 31. water pump; 32. water inlet pipe; 33. water outlet pipe; 4. lifting system. DETAILED DESCRIPTION

[0022] The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict. For the convenience of description, if the words "upper", "lower", "left" and "right" appear in the following text, they only indicate that the upper, lower, left and right directions are consistent with the drawings themselves, and do not limit the structure.

[0023] Embodiment 1

[0024] like Figure 1 As shown, a fish collecting system provided in this embodiment includes a fish collecting tank 1, a fish collecting box 2, a power system 3 and a lifting system 4.

[0025] In this embodiment, the fish collecting tank 1 includes two spaced-apart side walls 12, an end wall 13 connected to one end of the two side walls 12, and a bottom plate 11 connected to the bottom of the two side walls 12. The other end of the two side walls 12 forms an opening 17. Two water inlet holes 15 are arranged on one side of each side wall 12 near the opening 17. Figure 2 As shown, the two water inlet holes 15 are arranged at intervals in the height direction of the side wall 12, and the water inlet holes 15 are connected to the natural water area.

[0026] The water outlet holes 16 are evenly distributed on the side wall 12 and the end wall 13, wherein two groups are arranged on the end wall 13, and one group is arranged on the middle part of the side wall 12, and each group is provided with two in the height direction.

[0027] The fish collecting tank 1 has a net width of 2 m, a length of 10 m, and a water depth of 2 m.

[0028] The fish collecting box 2 is arranged in the fish collecting tank 1 and is arranged near the end wall 13. A gauze is arranged on the top of the fish collecting box 2, and the lifting system 4 is hung with the gauze.

[0029] Four partitions 14 are provided on the side of the fish collecting box 2 away from the end wall 13, and the partitions 14 are connected between the two side walls 12. The partitions 14 are provided with vertical slits 18, and the width of the vertical slits 18 is 0.4m. The vertical slits 18 on the four partitions 14 are staggered. A gap L is formed between every two partitions 14, and the gap L=1.2m.

[0030] The power system 3 includes a water pump 31 (including a controller), a water inlet pipe 32 and a water outlet pipe 33. The water inlet pipe 32 is connected between the water inlet hole 15 and the water pump 31, and the water outlet pipe 33 is connected between the water pump 31 and the water outlet hole 16. Each of the multiple water inlet holes 15 is provided with a water inlet pipe 32 connected in parallel with the water pump 31. Each of the multiple water outlet holes 16 is provided with a water outlet pipe 33 connected in parallel with the water pump 31.

[0031] The water supply flow rate of the water pump 31 is not less than 1.6m 3 / s, the diameters of the water inlet hole 15 and the water outlet hole 16 are 1m, and the diameters of the water inlet pipe 32 and the water outlet pipe 33 are 0.6m. The water pump 31 has stepless speed change capability and can arbitrarily adjust the water supply flow rate.

[0032] In addition, a valve may be provided to adjust the flow rate (flow velocity) of the water outlet 16 (water inlet 15). The openings of the water inlet 15 and the water outlet 16 are trumpet-shaped, and the opening of the water inlet 15 faces the downstream open water area.

[0033] The lifting system 4 is used to lift the fish collecting box 2 or place it in the fish collecting tank 1. The lifting system 4 can be carried on a ship and a hoist is used.

[0034] The operation steps of the fish gathering system provided by the utility model are:

[0035] S1, the lifting system 4 is hooked on the screen of the fish collecting box 2 through the steel wire rope, and the fish collecting box 2 is placed in the designated position of the fish collecting tank 1. The lifting system 4 descends, the steel wire rope is released to make the screen fall, and the upper part of the fish collecting box 2 is opened (the steel wire rope and the screen are not unhooked);

[0036] S2, turn on the water pump 31, the water inlet 15 absorbs water and the water outlet 16 sprays water, forming a water flow from the end wall 13 to the opening 17 in the fish collecting tank 1, and the water flow rate is automatically controlled by the power system 3 according to the characteristics of the fish. Under the guidance of the water flow, the fish in the natural open water area swim upstream from the opening 17 and enter the water area above the fish collecting box 2;

[0037] S3, lifting the lifting system 4, tightening the wire rope to make the gauze vertical, blocking the escape channel of the fish, and making the fish gather in the fish collecting box 2;

[0038] S4, continue to lift the lifting system 4 to transport the fish collecting box 2 to a designated area;

[0039] Repeat the above steps S1-S4.

[0040] Embodiment 2

[0041] like Figure 3 As shown, the first embodiment is repeated, except that, in this embodiment, the fish collecting tank 1 includes two spaced side walls 12 and a bottom plate 11 connected to the bottom of the two side walls 12. Both ends of the two side walls 12 form openings 17. The ends of the side walls 12 are provided with the water inlet holes 15, and the water outlet holes 16 are evenly distributed on the side walls 12. The partitions 14 are located at both ends of the fish collecting tank 2, and the partitions 14 are connected between the two side walls 12.

[0042] The water flow fish attracting method is the most effective way to attract fish, but the layout of the fish collecting system is restricted by the natural river terrain and geological conditions and water flow conditions, and it is difficult to form an effective induced water flow in the fish collecting tank. The fish collecting system provided by the utility model can drive the water flow movement by the power system (water pump and controller) according to the characteristics of different fish, and by adjusting the flow rate (flow rate) of the water outlet (water inlet), an effective fish attracting water flow is formed in the fish collecting tank to achieve the best fish attracting effect.

[0043] The fish gathering system provided by the utility model is not limited by river channel conditions and water flow conditions, has a wide range of applications, and is suitable for any open water area, especially for fish gathering areas in reservoir areas and rivers with slow water flow rates.

[0044] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A fish collecting system, comprising a fish collecting tank (1), characterized in that: It also includes a power system (3) for generating water flow in the fish collecting tank (1), forming a plurality of water inlet holes (15) and water outlet holes (16) evenly distributed on the side wall of the fish collecting tank (1), the power system (3) including a water pump (31), a water inlet pipe (32) for connecting the water inlet holes (15) and the water pump (31), and a water outlet pipe (35) for connecting the water pump (31) and the water outlet holes (16), and the water outlet holes (16) are in communication with the inside of the fish collecting tank (1).

2. The fish gathering system according to claim 1, characterized in that: A fish collecting box (2) and a plurality of partitions (14) are provided in the length direction of the fish collecting tank (1). The partitions (14) are located at one end or both ends of the fish collecting box (2). The partitions (14) are provided with vertical slits (18) that pass through the water flow from top to bottom, and a gap L is formed between every two partitions (14).

3. The fish gathering system according to claim 2, characterized in that: The vertical slits (18) on the plurality of partitions (14) are arranged in a staggered manner.

4. The fish gathering system according to claim 2, characterized in that: It also includes a lifting system (4) for lifting or placing the fish collecting box (2) in the fish collecting tank (1).

5. The fish gathering system according to claim 2, characterized in that: The interval L is equal to 0.8-1.5 m.

6. The fish gathering system according to any one of claims 2 to 5, characterized in that: The fish collecting tank (1) comprises two spaced-apart side walls (12), an end wall (13) connected to one end of the two side walls (12), and a bottom plate (11) connected to the bottom of the two side walls (12); the other ends of the two side walls (12) form an opening (17); at least one water inlet (15) is provided on a side of each side wall (12) close to the opening (17); and the water outlet holes (16) are evenly distributed on the side wall (12) and the end wall (13); the partition (14) is located at one end of the fish collecting tank (2); the partition (14) is close to the opening (17), and the partition (14) is connected between the two side walls (12).

7. The fish gathering system according to any one of claims 2 to 5, characterized in that: The fish collecting tank (1) comprises two spaced-apart side walls (12) and a bottom plate (11) connected to the bottoms of the two side walls (12); both ends of the two side walls (12) form openings (17); the ends of the side walls (12) are provided with water inlet holes (15); and the side walls (12) are evenly distributed with water outlet holes (16); the partitions (14) are located at both ends of the fish collecting tank (2), and the partitions (14) are connected between the two side walls (12).

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