Round plane array turbulent flow device and method for killing larvae of macrobrachium fortunei in water body

Abstract

The invention discloses a circular plane array turbulent flow device and method for killing larvae of macrobrachium fortunei in a water body, the circular plane array turbulent flow device comprises a water storage barrel, a jet flow disc and a water pump, and a water inlet and a water outlet are formed in the water storage barrel; the jet flow disc is rotatably arranged at the water outlet, a water storage cavity is formed in the water storage barrel, and a plurality of jet flow holes communicated with the water storage cavity are formed in the jet flow disc; the output end of the water pump is communicated with the water inlet of the water storage barrel so as to be suitable for inputting pulse high-pressure water flow into the water storage cavity, and the high-pressure water flow in the water storage cavity is suitable for being jetted through the jet holes so as to be suitable for killing larvae of macrobrachium nipponensis. The circular planar array turbulent flow device can destroy the physiological structure of the larvae of the macrobrachium fortunei in a physical mode, so that the larvae of the macrobrachium fortunei are effectively killed; the ecological balance can be protected while efficient killing is achieved; on the basis of reducing the maintenance and cleaning cost of facilities, the sustainability and high efficiency of large-scale water treatment are guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of biological control combining hydraulic engineering fluid mechanics and environmental protection technology, and in particular to a circular plane array disturbance flow device and method for killing larvae of limpet larvae in water bodies. Background Art

[0002] In water conservancy projects and water body management, the problem of attachment of fouling organisms is common, and its prevention and control is difficult, and the impact on the project is huge. Among them, the freshwater mussel Limnoperna fortunei has caused serious fouling problems in many water conservancy projects. In water conservancy projects, the attachment of Limnoperna fortunei will not only cause mechanical damage to the surface of the facilities, but may also cause pipe blockage and increased water flow resistance, thereby affecting the operating efficiency of the entire water conservancy project. In addition, the large-scale reproduction of Limnoperna fortunei may also cause biological invasion of the aquatic ecosystem in the receiving area, destroy the ecological balance, and threaten the survival of local species. However, it is difficult to stop water for maintenance in large-scale projects, and once Limnoperna fortunei is attached, it is difficult to clean it. Therefore, effectively preventing and controlling the attachment and spread of Limnoperna fortunei larvae in the early stages is the most effective way to solve the fouling of Limnoperna fortunei.

[0003] In the related art, the traditional method of killing larvae of the marsh clam mainly relies on chemical agents, such as chloride and copper preparations. However, although such chemical agents can effectively kill larvae to a certain extent, their use also brings many problems. First, the dosage of chemical agents used in a large range of water bodies is difficult to control. Due to the limitations of the diffusion capacity of the water body, the residence time and effective concentration of the agent are difficult to guarantee, and it is difficult to accurately control the dosage. Secondly, the use of chemical agents may cause harm to other non-target organisms such as fish and plankton. Long-term use may even destroy the self-purification ability of the water body and destroy the ecological balance of the water body. In addition, the killing effect of chemical agents is often significantly affected by environmental factors such as water flow velocity, water temperature, and agent concentration, which makes its killing effect unstable and inconsistent, and the processing efficiency is low, and the consumption of resources and costs is huge. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the present invention is to provide a circular plane array disturbance device and method for killing marsh clam larvae in water bodies, which can form strong shear and turbulence in the water body, effectively destroy the physiological structure of the marsh clam larvae, and achieve efficient killing.

[0005] The present application proposes a circular plane array spoiler device for killing swamp clam larvae in water bodies. The circular plane array spoiler device includes a water storage barrel, a jet disk and a water pump. The water storage barrel is formed with a water inlet and a water outlet; the jet disk is rotatably arranged at the water outlet, a water storage chamber is formed in the water storage barrel, and a plurality of jet holes connected with the water storage chamber are formed on the jet disk; the output end of the water pump is connected with the water inlet of the water storage barrel so as to be suitable for inputting pulsed high-pressure water flow into the water storage chamber, and the high-pressure water flow in the water storage chamber is suitable for being ejected through the jet holes so as to be suitable for killing the swamp clam larvae.

[0006] According to the circular plane array spoiler device of the present application, the high-pressure jet with tangential velocity can produce a strong turbulent effect, and use strong shear force to physically destroy the physiological structure of the larvae of the marsh clam, so as to achieve effective killing of the larvae of the marsh clam, which is conducive to curbing the reproduction and spread rate of the clams, reducing the number of clams, and preventing the larvae from spreading downstream; at the same time, the strong shear flow is also conducive to cleaning the clams attached to the surface of the facilities, reducing the problem of clams attaching, and reducing the pollution of water conservancy facilities. While efficiently killing, it will not pollute the water body and the ecological environment, which is conducive to protecting non-target organisms and ecological balance, and avoiding negative impacts on the water body and the surrounding environment; on the basis of reducing the maintenance and cleaning costs of the facilities, it ensures the sustainability and efficiency of large-scale water management.

[0007] According to some embodiments of the present application, the circular plane array spoiler device also includes a driving member, which is disposed in the water storage barrel, and an output end of the driving member is connected to the jet disk to be suitable for driving the jet disk to rotate relative to the water storage barrel.

[0008] According to some embodiments of the present application, the circular plane array spoiler device also includes a mounting frame, which is disposed on the water storage barrel, and the jet disk is rotatably disposed on the mounting frame and opposite to the water outlet; the driving member is disposed on the mounting frame and connected to the jet disk.

[0009] According to some embodiments of the present application, the mounting frame includes a fixing portion and a supporting portion, the fixing portion is connected to the water storage barrel, the water storage barrel is formed with a mounting portion suitable for connecting to the fixing portion, and the mounting portion defines a water outlet; the supporting portion is connected to the fixing portion, the jet disk is rotatably disposed on the supporting portion, the driving member is disposed on the supporting portion, and the output end of the driving member is connected to the jet disk.

[0010] According to some embodiments of the present application, a first matching portion is formed on the jet disk, a second matching portion is formed on the support portion, and the first matching portion is slidably connected to the second matching portion.

[0011] According to some embodiments of the present application, when the circular plane array spoiler device is used, the water outlet is arranged toward the downstream.

[0012] The present application also proposes a method for killing larvae of marsh clams in water bodies, which uses the circular plane array disturbance device for killing larvae of marsh clams in water bodies, and includes the following steps:

[0013] Obtain environmental parameters of the target water area;

[0014] Determine the jet parameters of the circular plane array spoiler device according to the environmental parameters;

[0015] The circular plane array spoiler device is operated according to the jet parameters.

[0016] According to some embodiments of the present application, the method for killing marsh clam larvae in water bodies also includes: monitoring the turbulence characteristics and killing effect of the circular plane array spoiler device; and optimizing the jet parameters of the circular plane array spoiler device based on the monitoring results.

[0017] The present application also proposes a system for killing larvae of a marsh clam, which comprises the circular plane array spoiler device.

[0018] According to some embodiments of the present application, the system for killing larvae of marsh clams also includes a monitoring device and a control device. The monitoring device is suitable for monitoring the water flow characteristics of the water body and the distribution characteristics of the marsh clams; the control device is suitable for adjusting the jet parameters of the circular plane array spoiler device according to the monitoring results of the monitoring device.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0021] Figure 1 is a schematic structural diagram of a circular plane array spoiler device according to some embodiments of the present application;

[0022] Figure 2 is a schematic diagram of a partial structure of a water storage bucket of a circular plane array spoiler device according to some embodiments of the present application;

[0023] Figure 3 is a schematic diagram of the structure and size of a circular plane array spoiler device according to some embodiments of the present application;

[0024] Figure 4 is a partial structural schematic diagram of a mounting frame and a jet disk of a circular plane array spoiler device according to some embodiments of the present application;

[0025] Figure 5 It is a schematic diagram of the circular plane array spoiler device of the present application in use;

[0026] Figure 6 It is a schematic diagram of the process of killing larvae of swamp clams using the circular plane array spoiler device of the present application;

[0027] Figure 7 It is a schematic diagram of the damage of the larvae of the marsh clam under the action of the circular plane array spoiler device of the present application.

[0028] Reference numerals:

[0029] Water storage barrel 10; mounting portion 11;

[0030] Water pump 20;

[0031] Jet disk 30; first matching portion 31;

[0032] A driving member 40;

[0033] Mounting frame 50 ; fixing portion 51 ; supporting portion 52 ; second matching portion 53 . DETAILED DESCRIPTION

[0034] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0035] Reference below Figure 1-Figure 3 A circular plane array spoiler device according to an embodiment of the present invention is described.

[0036] The present application proposes a circular plane array spoiler device for killing larvae of swamp clams in water bodies. The circular plane array spoiler device includes a water storage barrel 10, a jet disk 30 and a water pump 20. The water storage barrel 10 is formed with a water inlet and a water outlet; the jet disk 30 is rotatably arranged at the water outlet, a water storage cavity is formed in the water storage barrel 10, and a plurality of jet holes connected to the water storage cavity are formed on the jet disk 30; the output end of the water pump 20 is connected to the water inlet of the water storage barrel 10 so as to be suitable for inputting pulsed high-pressure water flow into the water storage cavity, and the high-pressure water flow in the water storage cavity is suitable for being ejected through the jet holes so as to be suitable for killing the larvae of swamp clams.

[0037] According to the circular plane array spoiler device of the present application, the water pump 20 can pass high-pressure water flow into the water storage chamber in the water storage barrel 10, and the high-pressure water flow is ejected through the jet holes on the jet disk 30. Since the jet disk 30 can rotate relative to the water storage barrel 10, the high-pressure water flow has a jet velocity and a tangential velocity when it passes through the jet hole to eject outward, and a high shear zone will be formed locally, inducing a small vortex, which will be further amplified under the action of rotation, and a strong turbulent zone will be formed. The superposition of the jet and rotation effects makes the mutual interference effect of the water flow in the high shear zone significant, and a large number of turbulent vortex structures are generated around the jet hole, and finally a stable turbulent energy transfer mechanism is formed. Further, since the water pump 20 injects high-pressure water flow into the water storage chamber by pulse, the circular plane array spoiler device of the present application can intermittently generate turbulence and shear, and the small-scale vortices generated by the high-frequency disturbance and rotational shear of the water body continue to spread, forming a wide and uniform turbulent zone in a large area of ​​water. The water body can continue to maintain strong turbulence. The shear and turbulence intensity generated by the jet flow is related to the rotation speed of the jet disk 30 and the jet frequency. The high-intensity shear force generated by the turbulence in the water body can damage the shell and the inner capsule structure of the larvae of the marsh clam, thereby killing the larvae of the marsh clam. Figure 7 shown.

[0038] According to the circular plane array spoiler device of the present application, the high-pressure jet with tangential velocity can produce a strong turbulent effect, and use strong shear force to physically destroy the physiological structure of the larvae of the marsh clam, so as to achieve effective killing of the larvae of the marsh clam, which is conducive to curbing the reproduction and spread rate of the clams, reducing the number of clams, and preventing the larvae from spreading downstream; at the same time, the strong shear flow is also conducive to cleaning the clams attached to the surface of the facilities, reducing the problem of clams attaching, and reducing the pollution of water conservancy facilities. While efficiently killing, it will not pollute the water body and the ecological environment, which is conducive to protecting non-target organisms and ecological balance, and avoiding negative impacts on the water body and the surrounding environment; on the basis of reducing the maintenance and cleaning costs of the facilities, it ensures the sustainability and efficiency of large-scale water management.

[0039] In addition, since the rotation speed and jet frequency of the circular plane array spoiler device can be changed, the circular plane array spoiler device can be adapted to different water flow conditions by adjusting the relevant parameters, so that it can play a stable killing effect under different water flow conditions. The circular plane array spoiler device of the present application has high adaptability to the water environment, is suitable for waters of different sizes and depths, can be used in a variety of scenarios such as open water bodies, closed water bodies, and special areas (such as channels, drains), and can meet the turbulence requirements under various flow conditions. The device is highly practical and functional. At the same time, the circular plane array spoiler device of the present application has a simple structure, is easy to operate, and is easy to transport, and has a high degree of flexibility and convenience; and has low maintenance costs, and can be applied to long-term governance of a large range of water bodies.

[0040] According to the circular plane array spoiler device of the present application, the water pump 20 can be constructed as a pulse pump to be suitable for introducing pulsed high-pressure water flow into the water storage chamber. The pulse frequency can be adjusted according to the use conditions. In some embodiments, the jet frequency is 50Hz to 120Hz. In some embodiments, the water pump 20 is constructed as a three-phase 380V voltage pump with a power of 7.5kW and a flow rate of 300m 3 / h, the head is 10m, and the outlet area of ​​pump 20 is 0.0314m 2 .

[0041] like Figure 1 , 2 As shown in FIG. 3 , the water storage barrel 10 is constructed as a hollow column, and the jet disk 30 is constructed as a flat disc. The jet disk 30 covers one end of the water outlet of the water storage barrel 10, and a water storage cavity is formed in the water storage barrel 10. In some embodiments, as Figure 3 As shown, the outer diameter D of the water storage barrel 10 is 300 mm, and the outer diameter of the jet disk 30 is 300 mm.

[0042] In addition, the plurality of jet holes are arranged in an array on the jet disk 30 in the circumferential and radial directions of the jet disk 30 , and the aperture size and spacing size of the jet holes can be designed and adjusted according to the use conditions. In some embodiments, the plurality of jet holes are evenly distributed on the jet disk 30 .

[0043] According to some embodiments of the present application, the circular plane array spoiler device further includes a driving member 40, which is disposed on the water storage barrel 10, and the output end of the driving member 40 is connected to the jet disk 30 to drive the jet disk 30 to rotate relative to the water storage barrel 10. In this embodiment, the jet disk 30 is driven to rotate relative to the water storage barrel 10 by the driving member 40. The driving member 40 can be configured as a motor, and the motor controls the rotation speed of the jet disk 30 to adjust the turbulent effect generated by the circular plane array spoiler device.

[0044] According to some embodiments of the present application, the circular plane array spoiler device further includes a mounting frame 50, the mounting frame 50 is disposed on the water storage barrel 10, the jet disc 30 is rotatably disposed on the mounting frame 50 and is directly opposite to the water outlet; the driving member 40 is disposed on the mounting frame 50 and is connected to the jet disc 30. In this embodiment, the jet disc 30 and the driving member 40 are disposed on the water storage barrel 10 through the mounting frame 50, and the output end of the driving member 40 can be coaxially mounted with the jet disc 30 and the water storage barrel 10 through the mounting frame 50, so that the driving member 40 drives the jet disc 30 to rotate relative to the water storage barrel 10 around the central axis.

[0045] According to some embodiments of the present application, the mounting frame 50 includes a fixing portion 51 and a supporting portion 52. The fixing portion 51 is connected to the water storage barrel 10. The water storage barrel 10 is formed with a mounting portion 11 suitable for connecting to the fixing portion 51. The mounting portion 11 defines a water outlet. The supporting portion 52 is connected to the fixing portion 51. The jet disk 30 is rotatably disposed on the supporting portion 52. The driving member 40 is disposed on the supporting portion 52, and the output end of the driving member 40 is connected to the jet disk 30. Figure 2 As shown, in this embodiment, the mounting portion 11 is constructed as the edge portion of the barrel wall of the water storage barrel 10, and the fixing portion 51 is constructed as a circular ring, which is connected to the mounting portion 11 to fix the mounting frame 50 on the water storage barrel 10; the supporting portion 52 is arranged on the inner side of the circular fixing portion 51, so that the driving member 40 can be directly opposite or close to the center of the jet disk 30 to drive the jet disk 30 to rotate around the central axis.

[0046] Further, in some embodiments, the jet disc 30 is disposed between the mounting frame 50 and the water storage barrel 10, and the mounting frame 50 axially limits the jet disc 30; at the same time, the support portion 52 is rotatably connected to the jet disc 30 so that it can rotate around the central axis. The driving member 40 is disposed on the side of the mounting frame 50 away from the water storage barrel 10, which will not affect the water storage function of the water storage chamber, and will not affect the jet effect.

[0047] Furthermore, the support part 52 includes a support body and a connecting frame, the support body is located at the center of the mounting frame 50, and is suitable for mounting the driving member 40 and the jet disk 30, and the connecting frame is configured as a plurality of connecting frames and is arranged at intervals on the peripheral side of the support body, and the connecting frame connects the support body and the fixing part 51. The support part 52 is configured as the above structure to reduce the shielding area of ​​the jet hole and reduce the impact on the jet.

[0048] According to some embodiments of the present application, a first matching portion 31 is formed on the jet disk 30, and a second matching portion 53 is formed on the support portion 52, and the first matching portion 31 is slidably connected to the second matching portion 53. Figure 4 As shown, in this embodiment, the first matching portion 31 and the second matching portion 53 can radially limit the jet disk 30 without affecting the rotation of the jet disk 30, thereby enhancing the stability of the rotation of the jet disk 30. Specifically, the first matching portion 31 is configured as a circle or arc centered on the rotation axis of the jet disk 30, and the second matching portion 53 is configured as an arc centered on the rotation axis of the jet disk 30. Further, the second matching portion 53 is disposed on the above-mentioned connecting frame.

[0049] According to some embodiments of the present application, the circular plane array spoiler device is used with the outlet facing downstream. In this embodiment, the outlet facing downstream can further enhance the disturbance effect of the jet on the water body in the downstream direction, thereby improving the killing effect and efficiency of the larvae of the marsh clam.

[0050] It should be noted that the setting direction of the circular plane array spoiler device of the present application is arbitrary and is not limited to the above-mentioned downstream direction. It can also be set in the upstream direction or vertically along the water flow, etc.

[0051] The circular plane array spoiler device of the present application is mainly used in waters where clams are seriously attached. By killing the larvae of the clams and cleaning the attached clams, the spread and aggregation of the larvae of the clams can be effectively avoided, and the killing of the larvae of the clams can be effectively achieved.

[0052] The present application also proposes a method for killing marsh clam larvae in water bodies, which uses the above-mentioned circular plane array spoiler device for killing marsh clam larvae in water bodies, including the following steps: obtaining environmental parameters of the target water body area; determining the jet parameters of the circular plane array spoiler device according to the environmental parameters; and operating the circular plane array spoiler device according to the jet parameters.

[0053] According to some embodiments of the present application, the environmental parameters of the target water area include water flow information, water quality parameters and parameters of the larvae of the marsh clam, and the steps of obtaining the environmental parameters of the target water area specifically include: using a water quality analyzer to measure water quality parameters such as water temperature, pH, dissolved oxygen, and conductivity on site; using a microscope to observe the morphology and activity of the larvae of the marsh clam, and to count parameters such as larval density, live body density, and mortality rate; using a sensor device to monitor the flow field, flow velocity, and turbulence characteristics of the target water body and other water flow information. According to the above environmental parameters, combined with the water body conditions and the distribution of the larvae of the marsh clam, the jet frequency of the circular plane array spoiler and the rotation speed of the jet disk 30 are adjusted and preliminarily determined, and the circular plane array spoiler is operated. In addition, according to the environmental parameters, the geometric parameters of the circular plane array spoiler can also be reasonably designed, including the aperture and spacing of the jet holes.

[0054] In order to improve the killing effect of the circular plane array spoiler, it is necessary to further determine the optimal operating parameters of the circular plane array spoiler to produce the best turbulence effect, ensure that sufficient turbulence effect can be generated to destroy the larval structure, and ensure that the turbulence can cover the effective target area. Therefore, according to some embodiments of the present application, the method for killing marsh clam larvae in water bodies also includes: monitoring the turbulence characteristics and killing effect of the circular plane array spoiler; optimizing the jet parameters of the circular plane array spoiler according to the monitoring results.

[0055] Specifically, the method for killing larvae of the marsh clam in the water body includes the verification of the killing effect of the pulse jet on the larvae of the marsh clam and the debugging of the device. Figure 5 As shown in the figure, during the operation of the circular plane array spoiler, it is necessary to set up test points within the turbulent range of the test water body to monitor the changes in the survival rate of the larvae of the marsh clam at the test points, so as to evaluate the killing effect of the larvae of the marsh clam. During the verification process, indicators such as the Kappa coefficient and the F1 value can be used to evaluate the accuracy of the killing effect, among which the Kappa coefficient and the F1 value are performance measurement indicators for classification. Figure 6 As shown, if the killing effect is not good, the duration and related parameters of the circular plane array spoiler device, including the jet frequency and rotation speed, will continue to be adjusted based on the environmental parameters and monitoring results; if the killing effect is good, the circular plane array spoiler device can continue to be operated to achieve large-scale and effective killing of the marsh clam larvae.

[0056] In some embodiments, test points may also be set both upstream and downstream of the test water body to analyze the killing effect of the larvae of the marsh clam through comparison.

[0057] In order to further improve the performance of the circular plane array spoiler, the method for killing the larvae of the marsh clam in the water body also includes monitoring and analyzing the turbulence performance of the circular plane array spoiler and debugging the device. Specifically, during the operation of the circular plane array spoiler, an ADV (acoustic Doppler velocimeter) is used to measure the time series of water flow velocity at different spatial positions of the water body, and the turbulence conditions at different spatial positions after the jet are analyzed based on the measurement results.

[0058] Specifically, the ADV probe is set vertically, and the measuring point is 5 cm away from the ADV probe in a straight line to reduce the influence of the probe on the water flow disturbance at the measuring point. The sampling frequency is set to 100 Hz, and the single-point sampling time is 4 minutes. When measuring the flow rate, the ADV is fixed on a mobile bracket with a two-way guide rail, on which a depth gauge and a level gauge are respectively set. The ADV body moves precisely along the depth gauge and the level gauge for positioning.

[0059] After ADV collects data, the ADV data is preprocessed to remove data with SNR < 20 and COR < 70, and the sampling phase space threshold method is used to remove burr data, and the data is denoised. Based on the ADV preprocessed data, the time-averaged velocity field, Reynolds stress, turbulence intensity, turbulence total energy TKE, turbulence dissipation rate, energy spectrum and other turbulence parameter distributions at each measuring point are calculated, and the energy spectrum of each measuring point is further calculated and analyzed. Based on the above turbulence analysis results, the jet parameters of the circular plane array spoiler device can be further optimized.

[0060] Furthermore, the above monitoring process conducts multiple test operations to compare and analyze the effective operating water range under different operating parameters; compare and analyze the differences in turbulence performance under the influence of different layout methods, focusing on analyzing key parameters such as the proportion of high-frequency pulsation, the contribution rate of three-way turbulence intensity, and the characteristic scale of turbulence structure; compare and analyze the differences in turbulence performance under different layout methods, focusing on analyzing key parameters such as the proportion of high-frequency pulsation, the contribution rate of three-way turbulence intensity, and the characteristic scale of turbulence structure. Through comparative analysis, the optimal layout parameters of the circular plane array spoiler device are determined to improve the performance of the circular plane array spoiler device.

[0061] The present application also proposes a system for killing larvae of a marsh clam, which comprises the circular plane array spoiler device.

[0062] According to some embodiments of the present application, the system for killing larvae of marsh clams also includes a monitoring device and a control device. The monitoring device is suitable for monitoring the water flow characteristics of the water body and the distribution characteristics of the marsh clams; the control device is suitable for adjusting the jet parameters of the circular plane array spoiler device according to the monitoring results of the monitoring device.

[0063] In this embodiment, the monitoring device is used to obtain environmental parameters before the circular plane array spoiler device is operated, collect water flow information, water body parameters and marsh clam larvae distribution parameters of the target water area; during the operation of the circular plane array spoiler device, it is used to monitor the jet turbulence characteristic parameters upstream and downstream of the target water body and the changes in the marsh clam larvae;

[0064] The control device adjusts the frequency of the pulse jet of the water pump 20 according to the monitoring results of the monitoring device and the input instructions; adjusts the output speed of the motor to adjust the rotation speed of the jet disk 30; the control device realizes that the circular plane array spoiler device generates sufficient turbulent flow field and shear force through regulation to cover the target area and achieve effective killing of the marsh clam larvae.

[0065] The present application can realize real-time dynamic monitoring and immediate intervention of marsh clam larvae in water bodies through the linkage of a circular plane array spoiler device with a monitoring device and a control device; and can improve the degree of automation in killing marsh clam larvae, reduce maintenance requirements, and reduce human intervention. It has high adaptability to complex environments and is suitable for the control of marsh clams in large-scale waters.

[0066] According to the circular plane array spoiler device, the method for killing larvae of marsh clams in water bodies, and the marsh clams larvae killing system, the test conditions are as follows:

[0067] The jet hole area of ​​the circular plane array spoiler is A 孔 =0.0314m 2 , total flow Q = 300m3 / h, jet velocity V = Q / A 孔 ≈3.32m / h, calculated as 20% turbulent velocity V 紊动 =0.2×V=0.664m / h; For the turbulent jet ejected from the jet hole, the turbulent field diffusion range R is estimated by the empirical formula 紊动 =0.2m, that is, the jet radius R≈0.2m, the radius of the turbulence effect range R 紊动 ≈0.2m.

[0068] After monitoring and calculation, the circular plane array spoiler device can achieve 100% killing of the larvae of the marsh clam in the target range. The damage of the larvae of the marsh clam under the action of the circular plane array spoiler device is shown in the figure below. Figure 7The test results show that the device can effectively hinder the growth process of the larvae of the marsh clam and significantly reduce the spread of the larvae to the downstream of the water body.

[0069] The above test proves that the circular plane array spoiler can effectively kill the larvae of the marsh clam and significantly reduce the spread of the larvae. In practical engineering applications, the operating parameters of the device can be flexibly adjusted according to the working conditions and conditions of different water bodies to ensure that it can play a significant killing role in various complex water flow environments.

[0070] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0071] In the description of the present invention, "first feature" or "second feature" may include one or more of the features.

[0072] In the description of the present invention, "plurality" means two or more.

[0073] In the description of the present invention, a first feature being “on” or “under” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact with each other but are in contact with each other via another feature therebetween.

[0074] In the description of the present invention, “on”, “over” and “above” a first feature from a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0075] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0076] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A circular plane array disturbance device for killing larvae of limulus larvae in water, characterized in that: include: A water storage barrel, wherein the water storage barrel is formed with a water inlet and a water outlet; A jet disc, the jet disc is rotatably arranged at the water outlet, a water storage cavity is formed in the water storage barrel, and a plurality of jet holes connected with the water storage cavity are formed on the jet disc; A water pump, wherein the output end of the water pump is connected to the water inlet of the water storage barrel so as to be suitable for inputting pulsed high-pressure water flow into the water storage chamber, and the high-pressure water flow in the water storage chamber is suitable for jetting through the jet hole to kill the larvae of the marsh clam.

2. The circular plane array disturbance device for killing larvae of limpet larvae in water according to claim 1, characterized in that: Also includes: A driving member is arranged on the water storage barrel, and an output end of the driving member is connected to the jet disk so as to be suitable for driving the jet disk to rotate relative to the water storage barrel.

3. The circular plane array disturbance device for killing larvae of limpet larvae in water according to claim 2, characterized in that: Also includes: A mounting frame, the mounting frame is arranged on the water storage barrel, and the jet disk is rotatably arranged on the mounting frame and directly faces the water outlet; The driving member is disposed on the mounting frame and connected to the jet disk.

4. The circular plane array disturbance device for killing larvae of limpet clams in water according to claim 3, characterized in that: The mounting frame comprises: A fixing part, the fixing part is connected to the water storage barrel, the water storage barrel is formed with a mounting part suitable for connecting with the fixing part, and the mounting part defines the water outlet; A supporting part is connected to the fixing part, the jet disk is rotatably arranged on the supporting part, the driving member is arranged on the supporting part, and an output end of the driving member is connected to the jet disk.

5. The circular plane array disturbance device for killing larvae of limpet clams in water according to claim 4, characterized in that: A first matching portion is formed on the jet disk, and a second matching portion is formed on the support portion. The first matching portion is slidably connected with the second matching portion.

6. The circular plane array disturbance device for killing larvae of limpet clams in water according to claim 1, characterized in that: When the circular plane array spoiler device is used, the water outlet is arranged toward the downstream.

7. A method for killing larvae of limulus larvae in water, characterized in that: The circular plane array disturbance device for killing larvae of limpet larvae in water bodies as claimed in any one of claims 1 to 6 comprises the following steps: Obtain environmental parameters of the target water area; Determining the jet parameters of the circular plane array spoiler device according to environmental parameters; The circular plane array spoiler device is operated according to the jet parameters.

8. The method for killing larvae of aquatic clams according to claim 7, characterized in that: Also includes: Monitoring the turbulence characteristics and killing effect of the circular plane array spoiler; The jet parameters of the circular plane array spoiler device are optimized according to the monitoring results.

9. A system for killing larvae of a marsh clam, characterized in that: It comprises a circular plane array spoiler device as described in any one of claims 1 to 6.

10. The system for killing larvae of the marsh clam according to claim 9, characterized in that: Also includes: A monitoring device, wherein the monitoring device is suitable for monitoring the flow characteristics of the water body and the distribution characteristics of the clams; A control device is adapted to adjust the jet parameters of the circular plane array spoiler device according to the monitoring result of the monitoring device.

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