A testing experimental system for fish aggregating lights simulating the marine environment

Abstract

The present invention discloses a test experimental system for fish-aggregating lights simulating the marine environment. Imitating the environment of fish-aggregating lights in marine operations, a seawater simulation device is arranged on a platform. The seawater simulation device is connected to a wave simulation device distributed on one side of the platform through a pipeline. On the other side of the platform corresponding to the wave simulation device, a sea breeze simulation device is equipped. The air outlet of the sea breeze simulation device faces the fish-aggregating light connection assembly arranged in the middle part of the platform. The operation of each device is uniformly controlled by an electric box system. The fish-aggregating lights to be tested are installed on the fish-aggregating light connection assembly. The present invention takes into account any environmental impacts on offshore production, especially strong winds and big waves, including seawater scouring and corrosion, and strong sunlight on the sea surface, etc., and conducts preliminary tests on the shock resistance, anti-corrosion, waterproof and durability of the device, laying a premise and foundation for actual offshore production, and is of great significance for improving efficiency and the success rate of equipment R & D put into production.

Description

Technical Field

[0001] The present invention belongs to the technical field of testing marine production tools, and particularly relates to a test experimental system for fish aggregating lights that simulates the marine environment. Background Art

[0002] Medium and large-sized fish aggregating lights are basically used in the light fishing industry for ocean fishing. As an important fishing aid device, the development of fish aggregating lights requires processes such as design, manufacturing, testing, and mass production. Simulation and testing can detect whether the current product can meet the production needs and market demands. This process directly affects whether the product can enter the next stage of mass production and commercial promotion. Ocean fishing vessels often take half a year or a year to return to port each time they go to sea. If the fish aggregating light equipment fails during offshore production, it is very difficult to repair and it is hard to replace immediately. Therefore, the reliability of fish aggregating light products must be emphasized.

[0003] The existing technologies for testing fish aggregating lights mainly include software simulation and sea trials. Each of these two modes has its own advantages, but both have deficiencies. Software simulation is difficult to achieve and reach the inspection effect of the product, especially it is difficult to achieve all special and extreme sea conditions. If direct ocean trials are carried out, it is time-consuming, laborious, costly, and the risk is also high. If testing is carried out in coastal waters and it is difficult to encounter various typical sea conditions, a certain effect cannot be achieved. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a test experimental system for fish aggregating lights that simulates the marine environment. The purpose is to, by simulating the impacts of seawater, seawater corrosion, sea waves, wind conditions, and ultraviolet rays on the functions, appearance, and structure of fish aggregating lights and their components in the sea, and also simulate the scenario of the sudden impact of seawater on the fish aggregating light components under high-temperature conditions. Through multi-faceted simulation, it is convenient for the manufacturer to evaluate the functions, structures, etc. of fish aggregating lights. Evaluating fish aggregating lights in various aspects through the experimental system is more convenient, more comprehensive, and cost-saving compared to sea trials, and is more persuasive and closer to the actual situation compared to software simulation.

[0005] The object of the present invention is achieved by the following technical solutions:

[0006] A test experimental system for fish aggregating lights that simulates the marine environment, characterized in that, imitating the environment of fish aggregating lights in marine operations, a seawater simulation device is arranged on a platform. The seawater simulation device is connected to a sea wave simulation device distributed on one side of the platform through a pipeline. On the other side of the platform corresponding to the sea wave simulation device, a sea breeze simulation device is provided. The air outlet of the sea breeze simulation device faces the fish aggregating light connection component arranged in the middle of the platform; the operation of each device is uniformly controlled by an electrical box system; the fish aggregating light to be tested is installed on the fish aggregating light connection component.

[0007] The preferred solution is that the seawater simulation device includes a seawater tank, a centrifugal pump and a sprinkler. The seawater tank is used to store simulated seawater that is precisely proportioned with seawater. The seawater tank is connected to the centrifugal pump. The centrifugal pump is connected to multiple groups of sprinklers through a main water pipe. Each group of sprinklers is provided with a branch pipe that is orthogonally connected to the main water pipe. Each branch pipe is evenly spaced on the platform. A plurality of sprinkler pipes are evenly distributed and vertically connected to each branch pipe. The lengths of the plurality of sprinkler pipes are selected according to the law of arithmetic progression. The upper end of each sprinkler pipe is connected to a trumpet-shaped sprinkler port. The main water pipe and all branch pipes are fixed to the floor of the platform by clamps. The nozzles of each sprinkler are obliquely opposite to a set of fish-collecting lamp connection components. A seawater return channel is provided around the platform. A water collecting cylinder is connected in series in the channel. A submersible pump is provided in the water collecting cylinder to return the simulated seawater to the seawater tank.

[0008] According to the preferred embodiment, the fish attracting lamp connection assembly is composed of an angle rod, an outward rod, a support rod and a stirring chassis; the bottom of the stirring chassis is fixed to the platform on the front side of the main water pipe, and the lower end of the support rod is connected to the stirring chassis; one end of the angle rod is hinged to the top of the support rod in an adjustable position, and the other end of the angle rod is also hinged to the outward rod in an adjustable position; the lower end of the outward rod and the part near the lower end of the support rod are connected by screws; there are 6 holes on the outward rod, and the outward rod can be connected to the support rod to achieve angle adjustment by connecting different holes; the fish attracting lamp as an experimental object is fixed on the outward rod.

[0009] The preferred solution is that the wave simulation device is controlled by a controller to cause the stirring chassis to swing in a simulated regular manner, and the support rod drives the angle rod to swing up and down and circumferentially. The angle rod drives the outward rod to swing, and the outward rod drives the fish attracting light connected thereto to swing, thereby realizing wave simulation movement.

[0010] The preferred solution is that the sea breeze simulation device is mainly composed of an electric fan, which is used to transmit simulated sea wind conditions with randomly changing speed and direction.

[0011] The preferred solution is that the experimental system is equipped with a movable sprayer, the droplet size of the sprayer is adjustable, and the direction of the spray head can swing up and down and rotate greatly.

[0012] The impact kinetic energy of water droplets wrapped in sea breeze can cause damage to the surface of the specimen, which must be fully considered in the experiment; the spray head of the sprayer can swing up and down and rotate greatly, mainly spraying at the back of the fish-attracting lamp.

[0013] The preferred solution is that the electrical box system supplies power to various devices in the experimental system, and can control the intensity and time of sprinklers, sprayers, fans, and wave simulation platforms through programs; and can control the output of simulated seawater by a centrifugal pump through programs.

[0014] Optimal solution: According to the similarity principle and dimensional analysis, the equation analysis method and dimensional analysis method are used to obtain dimensionless quantities related to the phenomenon under study, and the correlation function formula is obtained and used to conduct model tests. Since the tests are arranged according to the similarity criterion numbers, the results obtained from individual test data have risen to the status of representing the entire similarity group, thus greatly reducing the number of tests, and the obtained results have a certain generality (representing the similarity group). Using the similarity principle to guide the model tests and process the test data, that is, using a model with a geometric scale different from that of the actual object (usually a reduced model). For example, by accelerating or strengthening certain test conditions, the test time can be shortened and the test efficiency can be improved.

[0015] Optimal solution: The platform and the devices on it are a combined structure formed by multiple groups of units. Each unit has an independent sprinkler, a sea wave simulation device, a sea breeze simulation device, and a fish aggregating lamp connection component; a roller mechanism is installed under the bottom plate of each unit, and a pulling hook is connected to the bottom plate of the unit. After adjacent units are spliced, they are locked with buckles, and at the same time, the corresponding water pipes, power lines, and control lines are connected. A set of casters is provided under each bottom plate, and each caster in each set has a locking mechanism; the platform is provided with a mechanism for rotating around the center of the platform to be used for simulating and adjusting the angle between the fish aggregating lamp and the sunlight irradiation.

[0016] Optimal solution: A protective screen is provided around the experimental system platform. The protective screen is provided with a door. An arched or herringbone top cover that can be opened manually is provided on the top of the experimental system. The experimental system is converted from an open type to a limited closed type. The so-called limited closed means that the protective screen and the top cover can be closed during non-use periods to protect the experimental system equipment, and the top cover can be opened during the day to facilitate sunlight irradiation.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. The experimental system of the present invention can take into account any environmental impacts on offshore production, especially strong winds and big waves, including seawater scouring and corrosion, and strong sunlight on the sea surface, etc., and whether the fish aggregating lamp device is damaged after a series of thermal expansion and contraction effects, and conduct preliminary tests on the shock resistance, anti-corrosion, waterproof, and durability of the device, laying a premise and foundation for actual offshore production, and having important significance for improving efficiency and the success rate of equipment R & D put into production.

[0019] 2. The experimental system of the present invention is an open-air experimental system. The fish aggregating lamp is directly placed in the open-air experimental system for exposure to the sun, which is more in line with the actual ultraviolet situation at sea and is more in line with the actual situation at sea than the software simulation of the prior art;

[0020] 3. This experimental system can simulate the scenario where the fish aggregating lamp assembly is suddenly impacted by seawater under high-temperature conditions. Such extreme sea conditions are not available in various test modes of the prior art;

[0021] 4. The experiment system of the present invention takes less time and funds and is more targeted compared with the sea trial of the prior art;

[0022] 5. The combined structure formed by multiple groups of units is convenient for manufacturing and transportation during transfer;

[0023] 6. The limited closed type miniaturizes the experiment system, requires less floor space and is more convenient to operate.

[0024] 7. The experiment system of the present invention takes less time, saves funds and is more targeted for test working conditions compared with the sea trial. Description of the Drawings

[0025] Figure 1 is a schematic structural diagram of Embodiment 1 of the present invention;

[0026] Figure 2 is Figure 1 a schematic diagram of a mobile electric fan cooperating with the structure shown;

[0027] Each symbol in the figure represents: fish attracting lamp 1; platform 2; seawater simulation device 3; sea wave simulation device 4; sea breeze simulation device 5; fish attracting lamp connection component 6; electrical box system 7; seawater tank 8; centrifugal pump 9; water sprayer 10; main water pipe 11; branch water pipe 12; spray water pipe 13; hoop 14; angle rod 15; outer extension rod 16; support rod 17; stirring chassis 18; electric fan 19; atomizer 20. Detailed Embodiments

[0028] The embodiments of the present invention will be described in detail below with reference to the drawings: These embodiments are implemented on the premise of the technical solution of the present invention, and detailed implementation manners and specific operation processes are given, but the protection scope of the present invention is not limited to the following embodiments.

[0029] Embodiment 1: A fish attracting lamp test experiment system for simulating a marine environment, imitating the environment of the fish attracting lamp 1 during ocean operation, a seawater simulation device 3 is arranged on a platform 2 placed on the ground, the seawater simulation device 3 is connected through a pipeline to a sea wave simulation device 4 distributed on one side of the platform 2, and a sea breeze simulation device 5 is arranged on the other side of the platform 2 corresponding to the sea wave simulation device 4, the air outlet of the sea breeze simulation device 5 faces the fish attracting lamp connection component 6 arranged in the middle of the platform 2; the operation of each device is uniformly controlled by the electrical box system 7; the fish attracting lamp 1 to be tested is installed on the fish attracting lamp connection component 6. See Figure 1 .

[0030] The seawater simulation device 3 includes a seawater tank 8, a centrifugal pump 9, and a water sprayer 10. The seawater tank 8 is used to store the simulated seawater with precise seawater ratio. The seawater tank 8 is connected to the centrifugal pump 9, and the centrifugal pump 9 is connected to multiple groups of water sprayers 10 through a main water pipe 11. Each group of water sprayers 10 is provided with a branch water pipe 12 that is orthogonally connected to the main water pipe 11. The branch water pipes 12 are evenly spaced and distributed on the platform 2. A number of spray water pipes 13 are vertically and evenly distributed and connected to the branch water pipes 12. The lengths of the several spray water pipes 13 are selected according to the law of arithmetic progression. The upper ports of each spray water pipe 13 are all connected with a flared water spray opening; the main water pipe 11 and all branch water pipes 12 are respectively fixed on the floor of the platform 2 by hoop 14. The nozzles of each water sprayer 10 are respectively obliquely facing a set of fish attracting lamp connection components 6; a seawater return channel is arranged around the platform 2, and the channel is connected in series with a water collecting cylinder. There is a submersible pump in the water collecting cylinder to return the simulated seawater to the seawater tank 8.

[0031] The centrifugal pump 9 can promote the water sprayer 10 to increase the water pressure and spray seawater with higher water pressure on the fish attracting lamp 1. By programming to control the output of the centrifugal pump 9 of the simulated seawater, selecting the lengths of the several spray water pipes 13 according to the law of arithmetic progression and evenly distributing them can make the distances from each nozzle to the fish attracting lamp 1 equal, and selecting the lengths of the spray water pipes 13 according to the law of arithmetic progression can make the distances from the pipe orifices to the fish attracting lamp 1 the same.

[0032] The fish attracting lamp connection component 6 is composed of an angle rod 15, an outer extension rod 16, a support rod 17, and a stirring chassis 19 connected; the bottom of the stirring chassis 18 is fixed on the platform 2 in front of the main water pipe 11, and the lower end of the support rod 17 is connected to the stirring chassis 18; one end of the angle rod 15 is adjustably hinged to the top of the support rod 17, and the other end of the angle rod 15 is also adjustably hinged to the outer extension rod 16; the lower end of the outer extension rod 16 and the position close to the lower end of the support rod 17 are connected by screws; there are 6 holes on the outer extension rod 16, and the outer extension rod 16 can be connected to the support rod 17 by connecting different holes to achieve angle adjustment; the fish attracting lamp 1 as the experimental object is fixed on the outer extension rod 16 by screws.

[0033] The wave simulation device 4 is controlled by a controller to make the stirring chassis 18 swing in a simulated wave pattern, and drive the angle rod 15 to swing up and down and circumferentially through the support rod 17. The angle rod 15 drives the outer extension rod 16 to swing, and the outer extension rod 16 then drives the fish attracting lamp 1 connected to it to swing, so as to achieve the wave simulation movement.

[0034] For the existing simulation of waves, as described by modern theory, waves are regarded as a statistical mixture composed of many waves with different wavelengths, directions, and energies. Therefore, the imitated waves are also composed of a composite of many simple harmonic waves with different wavelengths, directions, and energies. The wave simulation device 4 is also called a wave simulation and emulation platform.

[0035] The sea breeze simulation device 5 is mainly composed of an electric fan 19, and the electric fan 19 is used to convey the simulated sea wind conditions with random changes in speed and direction.

[0036] This experimental system is equipped with a movable sprayer 20. The size of the droplets of the sprayer 20 can be adjusted, and the direction of the spray head can swing up and down and rotate greatly. See Figure 2 .

[0037] Marine water mist generally contains a large number of water droplets of different sizes. The viscosity of water is 50 - 90 times that of air (depending on the temperature). Due to the action of capillary force, extremely small freely falling water droplets are actually spherical. If the diameter of the water droplet is about 0.1 mm, it is a fog droplet, and this kind of fog droplet follows Stokes' rigid sphere motion law; if the diameter of the water droplet is between 1 mm and 4 mm, it follows Newton's law; if the diameter of the water droplet is greater than 4 mm, it is generally no longer spherical, for example, it will be squeezed into a flat shape or a cap shape, or even into a strip shape or broken, just like in heavy rain, large raindrops cannot be formed. And the sea breeze carrying water droplets has impact kinetic energy that can damage the surface of the test piece, which also needs to be fully considered in the experiment; the direction of the spray head of the sprayer 20 can swing up and down and rotate greatly, mainly to be able to spray on the back of the fish attracting lamp 1.

[0038] The electric box system 7 supplies power to each device of the experimental system, and can control the intensity, time, etc. of the water sprayer 10, the sprayer 20, the electric fan 19, and the sea wave simulation device 4 through a program; control the output of the centrifugal pump 9 to simulate seawater through a program.

[0039] Furthermore, considering by the similarity principle and dimensional analysis, using the equation analysis method and dimensional analysis method to obtain the dimensionless quantities related to the phenomenon under study, and finding and based on the correlation function formula, conducting model tests. Because arranging tests according to the similarity criterion numbers, the results obtained from individual test data have risen to the status of representing the entire similar group, thus the number of tests can be greatly reduced, and the obtained results have a certain generality (representing that similar group). Using the similarity principle to guide model tests and process test data, that is, using a model with a geometric scale different from the actual object (generally a reduced model), for example, accelerating or strengthening certain test conditions, can shorten the test time and improve the test efficiency.

[0040] Embodiment 2: The platform 2 and the devices thereon form a combined structure composed of multiple groups of units. Each unit has an independent water sprayer 10, a sea wave simulation device 4, a sea breeze simulation device 5, and a fish attracting lamp connection component 6; a roller mechanism is installed under the bottom plate of each unit, and a pulling hook is connected to the bottom plate of the unit. After adjacent units are spliced, they are locked with a buckle, and at the same time, the corresponding water pipes, power lines, and control lines are connected. A set of casters is provided under each bottom plate, and one of the casters in each set of casters is equipped with a locking mechanism; the platform 2 is provided with a mechanism for rotating around the center of the platform 2 to adjust the angle between the fish attracting lamp and the sunlight. The rest of the structure is the same as that of Embodiment 1.

[0041] Embodiment 3: A protective screen is provided around the experimental system platform 2, and the protective screen is provided with a portal. An arch-shaped or herringbone top cover that can be opened manually is provided on the top of the experimental system. The experimental system is converted from an open type to a limited closed type. The so-called limited closure means that the protective screen and the top cover can be closed during non-use periods to protect the experimental system equipment, and the top cover can be opened during the day to facilitate sunlight irradiation. The rest of the structure is the same as that of Embodiment 1 or 2.

[0042] In a fish attracting lamp test experimental system for simulating the marine environment in this application, in order to verify the corrosion of each factor in the marine environment on the fish attracting lamp device, after 7 days in an outdoor exhibition hall, a total of 4 waterproof test methods were carried out, and the experimental results are as follows:

[0043] Test 1: After the lamp is lit in the rain for waterproof test for ≥2 hours and then the lamp is turned off, check that there is no water vapor condensation on the inner surface of the lamp lens, and there is no water ingress at the solder wire position of the PCB board and the middle position between two adjacent screw holes;

[0044] Continue to light the lamp the next day and check the internal situation of the lens. Everything is normal and there is no water ingress;

[0045] Test 2: The lamp is lit until it reaches a thermal constant state, and a water spray test is carried out after turning off the lamp (the first time): the water spray time is 30 minutes, and then check the inner surface of the lamp lens. There is no water vapor condensation; there is no water ingress at the solder wire position of the PCB board and the middle position between two adjacent screw holes;

[0046] Test 3: The lamp is lit until it reaches a thermal constant state, and ice is applied to the surface of the lens; after the PC lens is iced at 0°C: there is no phenomenon of lens cracking and everything is normal;

[0047] Test 4: The lamp is lit until it reaches a thermal constant state, and after turning off the lamp (the first time), pour ice water (from the side and above) to simulate the wave impact test: check that there is no water vapor condensation on the inner surface of the lamp lens, and there is no water ingress at the solder wire position of the PCB board and the middle position between two adjacent screw holes.

[0048] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and what is described in the above embodiments and the specification is only to illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will also have various changes and improvements, and these changes and improvements fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A testing experimental system for fish-aggregating lights simulating the marine environment, characterized in that, Imitating the environment of fish-aggregating lights in ocean operations, a seawater simulation device is set up on a platform. The seawater simulation device is connected to a wave simulation device distributed on one side of the platform through pipelines. On the other side of the platform corresponding to the wave simulation device, a sea breeze simulation device is equipped. The air outlet of the sea breeze simulation device faces the fish-aggregating light connection assembly set in the middle part of the platform; the operation of each device is uniformly controlled by an electrical box system; the fish-aggregating light to be tested is installed on the fish-aggregating light connection assembly; The seawater simulation device includes a seawater tank, a centrifugal pump, and a sprinkler. The seawater tank is used to store simulated seawater with precise seawater ratio. The seawater tank is connected to the centrifugal pump. The centrifugal pump is connected to multiple groups of sprinklers through a main water pipe. Each group of sprinklers is provided with a branch water pipe orthogonally connected to the main water pipe. The branch water pipes are evenly spaced on the platform. A number of spray pipes are vertically and evenly distributed and connected to the branch water pipes. The lengths of the number of spray pipes are selected according to the arithmetic progression law. The upper ports of each spray pipe are all connected to a horn-shaped water spray nozzle; the main water pipe and all branch water pipes are respectively fixed on the floor of the platform by clamps. The nozzles of each sprinkler are respectively obliquely facing a set of fish-aggregating light connection assemblies; a seawater return channel is set around the platform. The channel is connected in series with a water collecting cylinder. There is a submersible pump in the water collecting cylinder to return the simulated seawater to the seawater tank; The fish-aggregating light connection assembly is composed of an angle rod, an outer extension rod, a support rod, and a stirring chassis. The bottom of the stirring chassis is fixed on the platform in front of the main water pipe. The lower end of the support rod is connected to the stirring chassis; one end of the angle rod is adjustably hinged to the top of the support rod, and the other end of the angle rod is also adjustably hinged to the outer extension rod; the lower end of the outer extension rod and the position close to the lower end of the support rod are connected by screws; there are 6 holes on the outer extension rod. The outer extension rod is connected to the support rod by connecting different holes to achieve angle adjustment; the fish-aggregating light as the experimental object is fixed on the outer extension rod.

2. The testing experimental system for fish aggregating lights simulating the marine environment according to claim 1, wherein The wave simulation device is controlled by a controller to make the stirring chassis swing regularly to simulate waves, and drive the angle rod to swing up and down and circumferentially through the support rod. The angle rod drives the outer extension rod to swing, and the outer extension rod then drives the fish-aggregating light connected to it to swing, thus realizing the wave simulation movement.

3. The fish-aggregating lamp test experimental system for simulating the marine environment according to claim 2, characterized in that, The sea breeze simulation device is mainly composed of an electric fan, which is used to convey the simulated sea wind conditions with random changes in speed and direction.

4. The testing experimental system for fish aggregating lights simulating the marine environment according to claim 3, characterized in that, This experimental system is equipped with a movable sprayer, and the droplet size of the sprayer can be adjusted. The direction of the spray head can swing up and down and rotate greatly.

5. The experimental system for testing fish aggregating lights simulating the marine environment according to claim 4, characterized in that, The electrical box system supplies power to each device of the experimental system, and controls the intensity and time of the sprinkler, the sprayer, the fan, and the wave simulation and simulation platform through a program; controls the output of the centrifugal pump to output simulated seawater through a program.

6. The experimental system for testing fish aggregating lights simulating a marine environment according to claim 5, characterized in that, The platform and the devices thereon form a combined structure composed of multiple groups of units. Each unit has an independent sprinkler, a sea wave simulation device, a sea breeze simulation device, and a fish attracting lamp connection component. Below the bottom plate of each unit, a roller mechanism is installed, and the bottom plate of the unit is connected with a pulling hook. After adjacent units are spliced, they are locked with buckles, and at the same time, the corresponding water pipes, power lines, and control lines are connected. There is a set of casters under each bottom plate, and each caster in each set has a locking mechanism. The platform is provided with a mechanism that rotates around the center of the platform to simulate and adjust the angle between the fish attracting lamp and the sunlight irradiation.

7. A fish aggregating lamp test experimental system for simulating a marine environment according to claim 6, characterized in that, A protective screen is set around the experimental system platform. The protective screen is provided with a portal. An arch-shaped or herringbone-shaped top cover that can be opened manually is set on top of the experimental system. The experimental system is converted from an open type to a limited closed type. The so-called limited closed means that the protective screen and the top cover can be closed during non-use periods to protect the experimental system equipment, and the top cover can be opened during the day to facilitate sunlight irradiation.

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