A fish behavior test device

Abstract

The present invention discloses a fish behavior test device, comprising a main frame in an annular structure, and inner and outer blocks in an annular structure that are spaced apart and arranged on the main frame, an annular water trough is formed between the inner and outer blocks, and a plurality of transparent plates that are sealed and connected in sequence are laid on the annular water trough; the inner and outer blocks each include two straight sections and two curved sections arranged between the two straight sections, and a flow pusher and a flow stabilizing grid are respectively provided at the junction of any of the straight sections and the curved section, and the flow stabilizing grid is located at the output end of the flow pusher. Its structure is reliable, and the overall annular frame and transparent plate structure have good permeability, which is conducive to observing the test process. In addition, the test device can be freely matched with multi-level measurement and control equipment according to actual use needs, thereby improving the performance of the device and making accurate tests on the behavioral preferences of fish under different circumstances.

Description

Technical Field

[0001] The invention relates to the technical field of fish habitat test devices, and in particular to a fish behavior test device. Background Art

[0002] Fish behavior studies the interactions of fish with their environment and other organisms, and has important implications for fish resource conservation and aquaculture production. Fish preference behavior is an effective indicator of fish's selection and preference for different thresholds of environmental factors, and is a key component of research related to the protection of fish habitats, the design of fish passage facilities, and welfare-oriented aquaculture. In recent years, numerous domestic research institutes and universities have constructed high-performance test tanks to facilitate experimental research on basic theories. However, most current experimental devices use static water testing, where fish are likely to remain stationary or, although swimming, remain within the boundaries of environmental factors. This fails to accurately reflect their preferred behaviors, leading to experimental errors or erroneous conclusions. Furthermore, existing experimental devices are limited in functionality and cannot accurately test fish behavioral preferences under different circumstances. Summary of the Invention

[0003] In order to solve the above technical problems, the present invention provides a fish behavior testing device.

[0004] The present invention solves the above-mentioned technical problem with the following technical solution: a fish behavior test device comprising a main frame in an annular structure, and an inner enclosure and an outer enclosure spaced apart from each other on the main frame and in an annular structure, an annular water trough being formed between the inner enclosure and the outer enclosure, and a plurality of transparent plates which are sealed and connected in sequence are laid on the annular water trough;

[0005] The inner enclosure and the outer enclosure both include two straight sections and two curved sections arranged between the two straight sections. A flow pusher and a flow stabilizing grid are respectively provided at the junction of any straight section and the curved section. The flow stabilizing grid is located at the output end of the flow pusher.

[0006] Furthermore, the inner enclosure and the outer enclosure are respectively detachably connected with sealing baffles, and adjacent sealing baffles form staggered water flow channels to achieve stepped water flow speed.

[0007] Furthermore, slots are respectively provided on the inner enclosure and the outer enclosure, sealing rings are provided in the slots, and the sealing partitions are sealed in the slots through the sealing rings.

[0008] Furthermore, the sealing ring includes a sealing ring body, a plurality of recessed grooves arranged on the outer side of the sealing ring body, and a plurality of oblique annular protrusions arranged on the inner side of the sealing ring, and the oblique annular protrusions are inclined toward the bottom direction of the sealing partition, and an air compression chamber is formed between adjacent oblique annular protrusions.

[0009] Furthermore, the flow stabilizing grille includes a grille frame detachably connected between the inner enclosure and the outer enclosure and a plurality of grille plates arranged side by side between the grille frames. A flow stabilizing cavity for stabilizing the flow of water is formed between adjacent grille plates, and the extension direction of the flow stabilizing cavity is parallel to the direction of the water flow.

[0010] Furthermore, a plurality of trapezoidal protrusions are provided on the surface of the grid plate, and a guide cavity for guiding water flow is formed between adjacent trapezoidal protrusions.

[0011] Furthermore, a flexible sealing pad that can be folded and opened is provided at one end of the transparent plate, and the other end of the transparent plate is movably connected to the end of the adjacent transparent plate. A lifting member for lifting it is provided under the transparent plate. When lifted, the transparent plate rotates around the end of the adjacent transparent plate, and the flexible sealing pad of the transparent plate opens to be sealed and connected with another transparent plate.

[0012] Furthermore, a receiving groove is provided at the end of the transparent plate, and the receiving groove is used to accommodate the flexible sealing pad in the folded state of the adjacent transparent plate.

[0013] Furthermore, it also includes a propeller flowmeter, a DC regulator, a host computer, and a control box. The DC regulator is respectively connected to the host computer, the control box and the flow pusher in communication, and the control box is also respectively connected to the host computer and the propeller flowmeter in communication.

[0014] Furthermore, it also includes a heating system for automatically heating the water body and an oxygen control system for automatically supplementing oxygen to the water body. The automatic heating system and the automatic oxygen control system are respectively connected to the host computer for communication.

[0015] The present invention has the following beneficial effects: The fish behavioral testing device provided by the present invention has a reliable structure, with an integral annular frame and transparent panels providing excellent transparency, facilitating observation of the experimental process. Furthermore, the testing device can be freely configured with multiple levels of measurement and control equipment according to actual needs, improving its performance. Through various control units and monitoring units, it enables automated and accurate monitoring of parameters such as water velocity, temperature, and dissolved oxygen, enabling integration of equipment and software for hydraulic model testing.

[0016] In addition, the present invention realizes a simulation test of the ecological environment of fishways with different flow rates in a stepped manner in the water tank by arranging stepped slots and partitions; realizes the test of fish behavior activities in different fishways by jacking up the transparent plates to simulate the terrain characteristics in the local area; realizes the self-circulation flow of the water body in the annular water tank by the spiral propulsion of the flow pusher; stabilizes the water body by the flow stabilizing grid, and realizes the guided flow stabilization operation with the assistance of diversion through the structural design of the flow stabilizing grid. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main frame structure of the present invention;

[0018] Figure 2 A top view of the present invention;

[0019] Figure 3 This is a schematic diagram of the layout of the sealing partition in the present invention;

[0020] Figure 4 Schematic diagram of the sealing ring structure of the present invention;

[0021] Figure 5 Schematic diagram of the flow stabilizing grid structure in the present invention;

[0022] Figure 6 Schematic diagram of the grid plate structure of the flow stabilizing grid in the present invention;

[0023] Figure 7 This is a structural schematic diagram of the transparent plate in the jacking state in the present invention;

[0024] Figure 8 is a cross-sectional view of the transparent plate in the present invention;

[0025] Figures 1 to 8 The reference numerals shown in the figure represent respectively: 1-main frame, 2-inner enclosure, 3-outer enclosure, 4-annular water trough, 5-transparent plate, 20-straight section, 21-curved section, 22-flow pusher, 23-flow stabilizing grille, 230-grille frame, 231-grille plate, 232-flow stabilizing cavity, 233-trapezoidal protrusion, 234-flow guide cavity, 6-sealing partition, 7-slot, 8-sealing ring, 80-sealing ring body, 81-recessed groove, 82-oblique annular protrusion, 83-air compression chamber, 50-flexible sealing pad, 51-lifting member, 52-accommodating groove. DETAILED DESCRIPTION

[0026] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0027] like Figures 1 to 2As shown, a fish behavior test device includes a main frame 1 in an annular structure, and inner and outer barriers 2 and 3, which are spaced apart and also in annular structures on the main frame 1. An annular water trough 4 is formed between the inner and outer barriers 2 and 3, and a plurality of transparent panels 5, which are sealed and connected in sequence, are laid on the annular water trough 4. The main frame 1 serves as the load-bearing component of the test device, and its structure is reliable and highly stable. It includes a supporting main beam, and a U-shaped structural frame and a linear structural frame, which are respectively mounted on the supporting main beam. The transparent panels 5 are made of ultra-clear tempered glass, which has strong light transmittance and a stable and reliable structure.

[0028] Both the inner and outer enclosures 2 and 3 include two straight sections 20 and two curved sections 21 disposed between the straight sections 20. A flow promoter 22 and a flow stabilizing grid 23 are provided at the junction of any straight section 20 and a curved section 21. The flow stabilizing grid 23 is located at the output end of the flow promoter 22. The flow promoter 22, as a flow-generating component, uses a screw propeller to achieve self-circulating flow of water in the annular water tank.

[0029] like Figure 3 As shown, sealing baffles 6 are detachably connected to the inner and outer baffles 2 and 3, respectively. Adjacent sealing baffles 6 form interlaced water channels, achieving stepped water flow rates. Slots 7 are provided on each of the inner and outer baffles 2 and 3, each containing a sealing ring 8. The sealing baffles 6 are sealed within these slots via the sealing ring 8. By arranging the stepped slots 7 and sealing baffles 6, stepped water flow rates are achieved within the flume, enabling a simulated experiment of a fishway ecosystem with stepped flow rates within the flume.

[0030] In order to improve the sealing effect between the slot 7 and the sealing partition 6, as shown in FIG. Figure 4 As shown, in the present invention, the sealing ring 8 comprises a sealing ring body 80, a plurality of recessed grooves 81 disposed on the outer surface of the sealing ring body 80, and a plurality of oblique annular protrusions 82 disposed on the inner surface of the sealing ring 8. An air compression chamber 83 is formed between adjacent oblique annular protrusions 82. The recessed grooves 81 enable a coordinated seal under pressure. The oblique annular protrusions 82 are thicker at the base and taper toward the end. The oblique annular protrusions 82 are inclined toward the bottom of the sealing diaphragm 6. As the sealing diaphragm 6 is inserted downward from above, the lowest sealing protrusion contacting the water surface deforms downward under the dual pressure of water pressure and friction generated by the insertion of the sealing diaphragm 6. The oblique design of the annular protrusions causes the lowest sealing protrusion to deform closer to the sealing diaphragm 6, thereby preventing water from escaping through the gap. Simultaneously, each chamber to the right of the lowest sealing protrusion generates pressure due to air compression, causing each oblique annular protrusion 82 to further compress the sealing diaphragm 6, thereby achieving an even more ideal sealing effect.

[0031] like Figure 5As shown, the flow stabilization grille 23 comprises a grille frame 230 detachably connected between the inner enclosure 2 and the outer enclosure 3, and a plurality of parallel grille plates 231 disposed between the grille frame 230. Flow stabilization channels 232 are formed between adjacent grille plates 231 to stabilize the flow of water. These channels extend parallel to the direction of the water flow. In this embodiment, the channels 232 are straight. Water flows through the diversion of the grille plates 231 and then into the straight channels, stabilizing the flow of water.

[0032] In order to further improve the flow stabilization effect, Figure 6 As shown, in the present invention, a plurality of trapezoidal protrusions 233 are provided on the surface of the grid plate 231, and a guide cavity 234 for guiding the water flow is formed between adjacent trapezoidal protrusions 233. The water flow is guided through the guide cavity 234, realizing a guided flow stabilization operation with the aid of the diversion, and the flow stabilization effect is good.

[0033] like Figure 7 As shown, a flexible sealing pad 50 that can be folded and opened is provided at one end of the transparent panel 5, and the other end of the transparent panel 5 is movably connected to the end of the adjacent transparent panel 5. A lifting member 51 for lifting the transparent panel 5 is provided below the transparent panel 5. When lifting, the transparent panel 5 rotates around the end of the adjacent transparent panel 5, and the flexible sealing pad 50 of the transparent panel 5 opens, sealingly connecting with another transparent panel 5. The lifting member 51 is an electric cylinder, the piston section of which is provided with a movable slot, and an active buckle is provided on the lower surface of the transparent panel 5. When it is necessary to simulate the working conditions of the terrain characteristics of a local area, the lifting member 51 is placed below the transparent panel 5 corresponding to one or more areas, and the lifting member 51 is activated. The lifting member 51 pushes the transparent panel 5 to rotate around the adjacent transparent panel 5 to a certain angle, thereby achieving the lifting effect. After lifting, as the opening of the open side of the transparent plate 5 increases, the flexible sealing pad 50 also expands, sealing the adjacent transparent plates 5 to prevent water leakage. The operation is convenient and effectively realizes the experiment of fish behavior in different fishways.

[0034] In order to facilitate the storage of the flexible sealing gasket 50 , in the present invention, a receiving groove 52 is opened at the end of the transparent plate 5 , and the receiving groove 52 is used to store the flexible sealing gasket 50 of the adjacent transparent plate 5 in a folded state.

[0035] In order to further improve the automated operation of the test, the present invention further includes a propeller flow meter, a DC regulator, a host computer, and a control box. The DC regulator is respectively connected to the host computer, the control box, and the flow pusher 22, and the control box is also connected to the host computer and the propeller flow meter. During operation, the software program of the host computer sends a control instruction for the initial flow rate to the control box, which is converted into a control signal by the control box and then sent to the DC controller. The speed of the propeller propeller is adjusted by the frequency converter to control the flow rate of the water, so that a certain flow rate is generated in the water tank. At this time, the propeller flow meter measures the flow rate of the water tank and feeds it back to the control box. After performing signal conversion, it is sent to the host computer. The host computer software issues a control instruction for the next step to adjust the frequency converter according to the difference between the current flow rate and the target flow rate. This is repeated, and the flow rate in the water tank reaches the target flow rate through multiple closed-loop adjustments.

[0036] In order to conduct tests under different temperature conditions or stable temperature conditions, the present invention also includes a heating system for automatically heating the water body. The heating system adopts an air-cooled vortex chiller, and its structure includes a compressor, a refrigerant, a condenser, and an evaporator. The water in the water tank is pumped into the built-in water tank of the air-cooled vortex chiller through a circulating water pump, and the target temperature is input through the PC system. The system automatically determines whether the water in the water tank needs to be heated up or cooled down, and temperature control is achieved through the compressor, condenser, refrigerant and evaporator. When the water temperature in the built-in water tank reaches the set temperature, it is pumped into the water tank from the chilled water outlet by pressure. Preferably, the heating system controls the water temperature at 0-35 degrees and the flow rate at 0-2m 3 / s.

[0037] To conduct experiments under varying or stable dissolved oxygen levels, the present invention also includes an oxygen control system for automatically regulating the dissolved oxygen content in the water. This oxygen control system comprises an oxygen cylinder, an air pipe, a barometer, and a control system. Oxygen is delivered to the water tank via the air pipe. The target dissolved oxygen content is input via a PC system. The system automatically determines whether the water in the tank needs oxygen supplementation using a dissolved oxygen probe. The oxygen control system controls the dissolved oxygen content, automatically stopping oxygen supplementation when the dissolved oxygen content in the built-in water tank reaches the set value. Preferably, the oxygen control system sets the dissolved oxygen content to saturation at 10.

[0038] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A fish behavior test device, characterized in that: The invention comprises a main frame (1) having an annular structure, and inner and outer retaining members (2) and (3) respectively arranged on the main frame (1) and having an annular structure, wherein an annular water trough (4) is formed between the inner and outer retaining members (2) and (3), and a plurality of transparent plates (5) which are sequentially sealed and connected are laid on the annular water trough (4); The inner enclosure (2) and the outer enclosure (3) each include two straight sections (20) and two U-shaped curved sections (21) arranged between the two straight sections (20), and a flow pusher (22) and a flow stabilizing grid (23) are respectively arranged at the connection position between any of the straight sections (20) and the curved section (21), and the flow stabilizing grid (23) is located at the output end of the flow pusher (22); One end of the transparent plate (5) is provided with a flexible sealing pad (50) that can be folded and opened, and the other end of the transparent plate (5) is movably connected to the end of the adjacent transparent plate (5). A lifting member (51) for lifting the transparent plate (5) is provided below the transparent plate (5). When lifting, the transparent plate (5) rotates around the end of the adjacent transparent plate (5), and the flexible sealing pad (50) of the transparent plate (5) is opened to be sealed and connected with the other transparent plate (5); An accommodating groove (52) is provided at the end of the transparent plate (5), and the accommodating groove (52) is used to accommodate the flexible sealing pad (50) in the folded state of the adjacent transparent plate (5); The inner enclosure (2) and the outer enclosure (3) are respectively detachably connected with sealing baffles (6), and adjacent sealing baffles (6) form staggered water flow channels to achieve a stepped water flow speed; The inner enclosure (2) and the outer enclosure (3) are respectively provided with slots (7), a sealing ring (8) is provided in the slots (7), and the sealing partition (6) is sealed and fitted in the slots (7) through the sealing ring (8); The sealing ring (8) comprises a sealing ring body (80), a plurality of recessed grooves (81) arranged on the outer side of the sealing ring body (80), and a plurality of oblique annular protrusions (82) arranged on the inner side of the sealing ring (8), wherein the oblique annular protrusions (82) are inclined toward the bottom direction of the sealing partition (6), and an air compression chamber (83) is formed between adjacent oblique annular protrusions (82).

2. The fish behavior test device according to claim 1, characterized in that: The flow stabilizing grille (23) comprises a grille frame (230) detachably connected between the inner enclosure (2) and the outer enclosure (3), and a plurality of grille plates (231) arranged side by side between the grille frames (230). Flow stabilizing channels (232) for stabilizing the flow of water are formed between adjacent grille plates (231), and the extending direction of the flow stabilizing channels (232) is parallel to the direction of the water flow.

3. The fish behavior test device according to claim 2, characterized in that: A plurality of trapezoidal protrusions (233) are provided on the surface of the grid plate (231), and a guide cavity (234) for guiding water flow is formed between adjacent trapezoidal protrusions (233).

4. The fish behavior test device according to claim 3, characterized in that: It also includes a propeller flowmeter, a DC regulator, a host computer, and a control box. The DC regulator is respectively connected to the host computer, the control box, and the flow pusher (22). The control box is also respectively connected to the host computer and the propeller flowmeter.

5. The fish behavior test device according to claim 4, characterized in that: It also includes a heating system for automatically heating the water body and an oxygen control system for automatically supplementing oxygen to the water body. The automatic heating system and the automatic oxygen control system are respectively connected to the host computer for communication.

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