Circular planar array spoiler device and method for killing juvenile hard clam larvae in a body of water

Abstract

The application discloses a circular plane array disturbance flow device and method for killing mussel larvae in water bodies, and relates to the field of water body treatment. The circular plane array disturbance flow device comprises a water storage barrel, a jet disc and a water pump, the water storage barrel is formed with a water inlet and a water outlet, the jet disc is rotatably arranged at the water outlet, a water storage cavity is formed in the water storage barrel, a plurality of jet holes are formed on the jet disc and communicated with the water storage cavity, and the output end of the water pump is communicated with the water inlet of the water storage barrel to input pulse high-pressure water flow into the water storage cavity. The high-pressure water flow in the water storage cavity is adapted to jet through the jet holes to kill the mussel larvae. The circular plane array disturbance flow device can destroy the physiological structure of the mussel larvae by a physical method, effectively kills the mussel larvae, protects the ecological balance at the same time of high-efficiency killing, and guarantees the sustainability and high efficiency of large-scale water body treatment on the basis of reducing the maintenance and cleaning cost of the device.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of biological prevention and control technology combining fluid mechanics of hydraulic engineering and environmental protection technology, and particularly relates to a circular planar array disturbance flow device and method for killing Limnoperna fortunei larvae in water. BACKGROUND

[0002] In hydraulic engineering and water body management, the problem of fouling organisms is widespread, and it is difficult to prevent and control, which has a huge impact on engineering. Among them, Limnoperna fortunei has caused serious fouling problems in many water conservancy projects. In water conservancy projects, the attachment of Limnoperna fortunei not only causes mechanical damage to the surface of the facility, but also can cause pipe blockage and increase water flow resistance, thereby affecting the operating efficiency of the entire water conservancy project. In addition, the massive reproduction of Limnoperna fortunei can cause biological invasion to the water ecosystem of the receiving area, destroy the ecological balance, and threaten the survival of local species. However, it is difficult to clean up Limnoperna fortunei once it is attached in large-scale engineering, so effectively preventing and controlling the attachment and spread of Limnoperna fortunei larvae in the early stage is the most effective way to solve the problem of Limnoperna fortunei fouling.

[0003] In related technologies, the traditional method for killing Limnoperna fortunei larvae mainly relies on chemical agents such as chlorides and copper preparations. However, such chemical agents, although can effectively kill the larvae to some extent, have brought many problems. First, the dosage of chemical agents used in a large range of water bodies is difficult to control, and due to the limitation of water body diffusion capacity, the residence time and effective concentration of the agents are difficult to guarantee, and the dosage is difficult to control accurately. Second, the use of chemical agents can cause harm to other non-target organisms such as fish and plankton, and long-term use can even destroy the self-purification capacity 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 the killing effect unstable and inconsistent, and the treatment efficiency is low, and the resources and cost consumption are huge. SUMMARY

[0004] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, one object of the present application is to provide a circular planar array disturbance flow device and method for killing Limnoperna fortunei larvae in water, which can form strong shear and turbulence in water, effectively destroy the physiological structure of Limnoperna fortunei larvae, and achieve efficient killing.

[0005] The application provides a circular plane array disturbance device for killing juvenile clams in a water body.

[0006] According to the circular plane array disturbance device, the high-pressure jet flow with tangential velocity can generate a strong turbulent effect, and the strong shear force can physically destroy the physiological structure of the juvenile clams, so that the juvenile clams can be effectively killed, the propagation and diffusion speed of the juvenile clams can be controlled, the number of the juvenile clams can be reduced, and the diffusion of the juvenile clams to the downstream can be avoided. Meanwhile, the strong shear flow can be used for cleaning the juvenile clams attached to the surface of a facility, reducing the attachment of the juvenile clams, and reducing the fouling of the water conservancy facility. While the juvenile clams are effectively killed, the water body and the ecological environment are not polluted, the non-target organisms and the ecological balance can be protected, and the negative influence on the water body and the surrounding environment can be avoided. On the basis of reducing the maintenance and cleaning cost of the facility, the sustainability and efficiency of large-scale water body treatment can be ensured.

[0007] According to some embodiments of the application, the circular plane array disturbance device further comprises a driving member, the driving member is arranged on the water storage barrel, and the output end of the driving member is connected with the jet disc to drive the jet disc to rotate relative to the water storage barrel.

[0008] According to some embodiments of the application, the circular plane array disturbance device further comprises a mounting frame, the mounting frame is arranged on the water storage barrel, the jet disc is rotatably arranged on the mounting frame and faces the water outlet, and the driving member is arranged on the mounting frame and connected with the jet disc.

[0009] According to some embodiments of the application, the mounting frame comprises a fixed part and a supporting part, the fixed part is connected with the water storage barrel, the water storage barrel is formed with a mounting part connected with the fixed part, and the mounting part defines the water outlet; the supporting part is connected with the fixed part, the jet disc is rotatably arranged on the supporting part, and the driving member is arranged on the supporting part and connected with the jet disc.

[0010] According to some embodiments of the application, the jet disc is formed with a first matching part, the supporting part is formed with a second matching part, and the first matching part is slidably connected with the second matching part.

[0011] According to some embodiments of the application, the water outlet of the circular plane array disturbance device is arranged to face the downstream when the device is applied.

[0012] The application also provides a method for killing juvenile clams in a water body, which comprises the following steps of using the circular planar array spoiler device for killing juvenile clams in a water body.

[0013] Obtaining an environmental parameter of a target water body area;

[0014] Determining jet flow parameters of the circular planar array spoiler device according to the environmental parameter;

[0015] Operating the circular planar array spoiler device according to the jet flow parameters.

[0016] According to some embodiments of the application, the method for killing juvenile clams in a water body further comprises monitoring the turbulent characteristics and killing effect of the circular planar array spoiler device; and optimizing the jet flow parameters of the circular planar array spoiler device according to the monitoring results.

[0017] The application also provides a juvenile clam killing system, which comprises the circular planar array spoiler device.

[0018] According to some embodiments of the application, the juvenile clam killing system further comprises a monitoring device and a control device, wherein the monitoring device is adapted to monitor the flow characteristics of the water body and the distribution characteristics of the juvenile clams; and the control device is adapted to adjust the jet flow parameters of the circular planar array spoiler device according to the monitoring results of the monitoring device.

[0019] Additional aspects and advantages of the application will be made apparent by the following description and the appended claims. BRIEF DESCRIPTION OF DRAWINGS

[0020] The above and / or additional aspects and advantages of the application will become apparent and be readily understood by considering the following detailed description, including the accompanying drawings, in which:

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

[0022] Figure 2 is a partial structural schematic diagram of a water storage barrel of a circular planar array spoiler device according to some embodiments of the application;

[0023] Figure 3 is a structural size schematic diagram of a circular planar array spoiler device according to some embodiments of the application;

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

[0025] Figure 5 is a schematic diagram of a use state of a circular planar array spoiler device of the application;

[0026] Figure 6 This is a schematic diagram of the process of killing marsh clam larvae using the circular plane array spoiler device of the present application;

[0027] Figure 7 This is a schematic diagram of the damage to 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] The following describes embodiments of the present invention in detail. Examples of the embodiments 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 intended only to explain the present invention and are not to be construed as limiting the present invention.

[0035] Reference below Figures 1-3 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 flow disturbance device for killing marsh clam larvae in water bodies. The circular plane array flow disturbance 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 to kill the marsh clam larvae.

[0037] According to the circular plane array disturbance device, the water pump 20 can inject high-pressure water flow into the water storage cavity in the water storage barrel 10, and the high-pressure water flow is jetted through the jet holes on the jet disc 30. Since the jet disc 30 can rotate relative to the water storage barrel 10, when the high-pressure water flow is jetted outward through the jet holes, the high-pressure water flow has jet velocity and tangential velocity, and a local high shear zone is formed, which can induce micro vortex flow. The vortex flow is further amplified under the rotation effect, and a strong turbulent flow zone is formed. The superposition of the jet effect and the rotation effect makes the mutual interference effect of the water flow in the high shear zone significant, a large number of turbulent vortex structures are generated around the jet holes, 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 cavity in pulses, the circular plane array disturbance device can intermittently generate turbulence and shear, and the water body is subjected to high-frequency disturbance and small-scale vortex flow generated by rotational shear, which continuously spreads in a large area of water body to form a wide and uniform turbulent flow zone. The water body can continuously maintain strong turbulence. The shear and turbulence generated by the jet are related to the rotation speed of the jet disc 30 and the jet frequency. The high-intensity shear force generated by the turbulence in the water body can damage the shell and inner sac structure of the clam larvae, achieving the killing of the clam larvae. The damage of the jet to the clam larvae is as shown in FIG. 8. Figure 7

[0038] According to the circular plane array disturbance device, the high-pressure jet with tangential velocity can generate strong turbulent effect, and the physiological structure of the clam larvae is damaged by strong shear force through a physical method, achieving effective killing of the clam larvae, which is conducive to restraining the propagation and diffusion speed of the clam, reducing the number of clams, and avoiding the diffusion of the larvae to the downstream. At the same time, the strong shear flow is also conducive to cleaning the clams attached to the surface of the facility, reducing the problem of clam attachment, and reducing the fouling of the water conservancy facility. While achieving efficient 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 effects on the water body and the surrounding environment. On the basis of reducing the maintenance and cleaning cost of the facility, the sustainability and efficiency of large-scale water body treatment are ensured.

[0039] In addition, since the rotation speed of the circular plane array disturbance device and the jet frequency can be changed, by adjusting the related parameters, the circular plane array disturbance device can adapt to different water flow conditions, so that it can play a stable killing role under different water flow conditions. The circular plane array disturbance device has high adaptability to the water environment, and is suitable for water bodies of different scales and depths, and can be used in various scenes such as open water, closed water, and special areas (such as channels and drainage outlets), to meet the turbulence requirements under various flow conditions, and has high practicability and functionality. At the same time, the circular plane array disturbance device has a simple structure, is easy to operate, is convenient to transport, has high flexibility and convenience, and has low maintenance cost, and can be applied to long-term treatment of a large range of water bodies.

[0040] ​According to the circular planar array turbulence device of the present application, the water pump 20 can be configured as a pulse pump to supply pulse high pressure water flow into the water storage cavity, and the pulse frequency can be adjusted according to the use condition. In some embodiments, the jet frequency is 50Hz-120Hz. In some embodiments, the water pump 20 is configured as a three-phase 380v voltage pump with a power of 7.5kW, a flow rate of 300m 3 / h, and a lift of 10m. The outlet area of the water pump 20 is 0.0314m 2 .

[0041] As shown in Figure 1 , 2 , 3, the water storage barrel 10 is configured as a hollow cylinder, and the jet disc 30 is configured as a planar disc. The jet disc 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 shown in Figure 3 , the outer diameter D of the water storage barrel 10 is 300mm, and the outer diameter of the jet disc 30 is 300mm.

[0042] In addition, a plurality of jet holes are arranged in an array on the jet disc 30 with respect to the circumferential direction and the radial direction of the jet disc 30. The size of the jet holes and the spacing can be designed and adjusted according to the use condition. In some embodiments, the plurality of jet holes are uniformly distributed on the jet disc 30.

[0043] According to some embodiments of the present application, the circular planar array turbulence device further comprises a driving member 40 arranged on the water storage barrel 10. The output end of the driving member 40 is connected to the jet disc 30 to drive the jet disc 30 to rotate relative to the water storage barrel 10. In this embodiment, the jet disc 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, which controls the rotation speed of the jet disc 30 to adjust the turbulence effect generated by the circular planar array turbulence device.

[0044] According to some embodiments of the present application, the circular planar array turbulence device further comprises a mounting bracket 50 arranged on the water storage barrel 10. The jet disc 30 is rotatably arranged on the mounting bracket 50 and opposite to the water outlet. The driving member 40 is arranged on the mounting bracket 50 and connected to the jet disc 30. In this embodiment, the jet disc 30 and the driving member 40 are arranged on the water storage barrel 10 through the mounting bracket 50. The output end of the driving member 40 is coaxially arranged with the jet disc 30 and the water storage barrel 10 through the mounting bracket 50, so that the driving member 40 drives the jet disc 30 to rotate around the central axis relative to the water storage barrel 10.

[0045] According to some embodiments of the present application, the mounting frame 50 comprises a fixing part 51 and a supporting part 52. The fixing part 51 is connected with the water storage barrel 10, the water storage barrel 10 is formed with a mounting part 11 adapted to be connected with the fixing part 51, the mounting part 11 defines a water outlet. The supporting part 52 is connected with the fixing part 51, the fluidic disc 30 is rotatably arranged on the supporting part 52, and the driving member 40 is arranged on the supporting part 52, and the output end of the driving member 40 is connected with the fluidic disc 30. As shown in Figure 2 In the present embodiment, the mounting part 11 is configured as an edge portion of the barrel wall of the water storage barrel 10, the fixing part 51 is configured as a circular ring, and is connected with the mounting part 11 to fix the mounting frame 50 on the water storage barrel 10. The supporting part 52 is arranged on the inner side of the annular fixing part 51, so that the driving member 40 can be opposite to or close to the center of the fluidic disc 30 to drive the fluidic disc 30 to rotate around the central axis.

[0046] Further, in some embodiments, the fluidic disc 30 is arranged between the mounting frame 50 and the water storage barrel 10, and the mounting frame 50 axially limits the fluidic disc 30. At the same time, the supporting part 52 is rotatably connected with the fluidic disc 30 so that it can rotate around the central axis. The driving member 40 is arranged on the side of the mounting frame 50 away from the water storage barrel 10, which does not affect the water storage function of the water storage cavity and also does not affect the fluidic effect.

[0047] Further, the supporting part 52 comprises a supporting body and a connecting frame. The supporting body is located at the center of the mounting frame 50 and is adapted to mount the driving member 40 and the fluidic disc 30. The connecting frame is configured as a plurality of and is arranged at intervals on the circumferential side of the supporting body, and connects the supporting body and the fixing part 51. The supporting part 52 configured as the above structure can reduce the shielding area of the fluidic hole and reduce the influence on the fluidic effect.

[0048] According to some embodiments of the present application, the fluidic disc 30 is formed with a first matching part 31, and the supporting part 52 is formed with a second matching part 53. The first matching part 31 is slidably connected with the second matching part 53. As shown in Figure 4 In the present embodiment, the first matching part 31 and the second matching part 53 can radially limit the fluidic disc 30 without affecting the rotation of the fluidic disc 30, thereby enhancing the stability of the rotation of the fluidic disc 30. Specifically, the first matching part 31 is configured as a circle or an arc with the rotation axis of the fluidic disc 30 as the center, and the second matching part 53 is configured as an arc with the rotation axis of the fluidic disc 30 as the center. Further, the second matching part 53 is arranged on the connecting frame.

[0049] According to some embodiments of the present application, the circular planar array spoiler device is applied, and the water outlet is arranged to face downstream. In the present embodiment, the water outlet arranged to face downstream can further enhance the disturbance effect of the fluidic disc on the water body in the downstream direction, thereby improving the killing effect and efficiency of the juvenile clam.

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

[0051] The circular planar array turbulence device of the present application is mainly used in water areas where the clam is seriously attached. Through the killing of the clam larvae and the cleaning of the attached clams, the spread and aggregation of the clam larvae can be effectively avoided, and the killing of the clam larvae can be effectively realized.

[0052] The present application also provides a method for killing clam larvae in a water body, which adopts the circular planar array turbulence device for killing clam larvae in a water body, and comprises the following steps: obtaining environmental parameters of a target water body area; determining jet flow parameters of the circular planar array turbulence device according to the environmental parameters; and operating the circular planar array turbulence device according to the jet flow parameters.

[0053] According to some embodiments of the present application, the environmental parameters of the target water body area include water flow information, water quality parameters and clam larvae parameters, and the step of obtaining the environmental parameters of the target water body area specifically comprises: 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 clam larvae, and to count parameters such as the density of the larvae, the density of the living bodies, the mortality rate, etc.; and using a sensing device to monitor water flow information such as the flow field, the flow rate and the turbulence characteristics of the target water body. According to the above-mentioned environmental parameters, the jet flow frequency and the rotation speed of the jet flow disc 30 of the circular planar array turbulence device are adjusted and preliminarily determined in combination with the water body conditions and the distribution conditions of the clam larvae, and the circular planar array turbulence device is operated. In addition, the geometric parameters of the circular planar array turbulence device, including the aperture and the spacing of the jet flow holes, etc., can also be reasonably designed according to the environmental parameters.

[0054] In order to improve the killing effect of the circular planar array turbulence device, the best operation parameters of the circular planar array turbulence device need to be further determined to produce the best turbulence effect, so as to ensure that sufficient turbulence effect can be produced to destroy the structure of the larvae and ensure that the turbulence can cover the effective target area. Therefore, according to some embodiments of the present application, the method for killing clam larvae in a water body further comprises: monitoring the turbulence characteristics and the killing effect of the circular planar array turbulence device; and optimizing the jet flow parameters of the circular planar array turbulence device according to the monitoring results.

[0055] Specifically, the method for killing clam larvae in a water body comprises verification of the killing effect of the pulse jet flow on the clam larvae and device debugging. As shown in FIG. 8, during the operation of the circular planar array turbulence device, test points need to be set in the turbulence range of the test water body, and the survival rate change of the clam larvae at the test points is monitored to evaluate the killing effect of the clam larvae. During the verification process, the accuracy of the killing effect can be evaluated by using indicators such as the Kappa coefficient and the F1 value, wherein the Kappa coefficient and the F1 value are performance measurement indicators of classification. Figure 5 ​Figure 6 As shown, if the killing effect is not good, the duration and related parameters of the circular planar array spoiler device are continuously adjusted based on the environmental parameters and monitoring results, including jet frequency and rotation speed, etc.; if the killing effect is good, the circular planar array spoiler device can continue to run to achieve large-scale and effective killing of the clam larvae.

[0056] In some embodiments, test points can also be arranged upstream and downstream of the test water body, and the killing effect of the clam larvae is compared and analyzed.

[0057] To further improve the performance of the circular planar array spoiler device, the method for killing clam larvae in water also includes monitoring and analyzing the jet turbulence performance of the circular planar array spoiler device and adjusting the device. Specifically, during the operation of the circular planar array spoiler device, the ADV (Acoustic Doppler Velocimeter) is used to measure the water flow velocity time series at different spatial positions in the water body, and the turbulence at different spatial positions after the jet is analyzed based on the measurement results.

[0058] Specifically, the ADV probe is set vertically, 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 support with a bidirectional guide rail, a depth scale and a horizontal scale are arranged on the guide rail, and the ADV body is accurately moved along the depth scale and the horizontal scale for positioning.

[0059] After the ADV collects data, the ADV data is preprocessed, the data with SNR<20 and COR<70 is removed, the burr data is removed by the sampling phase space threshold method, and the data is denoised. Based on the ADV preprocessed data, the time-averaged flow 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 analysis results of the above turbulence conditions, the jet parameters of the circular planar array spoiler device can be further optimized.

[0060] Further, the above monitoring process is carried out for multiple test operations, and the effective water body range under different operation parameters is compared and analyzed; the turbulence performance difference under different arrangement modes is compared and analyzed, and the key parameters such as the proportion of high-frequency pulsation, the contribution rate of three-dimensional turbulence intensity, and the turbulence structure characteristic scale are analyzed; the turbulence performance difference under different arrangement modes is compared and analyzed, and the key parameters such as the proportion of high-frequency pulsation, the contribution rate of three-dimensional turbulence intensity, and the turbulence structure characteristic scale are analyzed. The best arrangement parameters of the circular planar array spoiler device are determined by comparison and analysis, and the performance of the circular planar array spoiler device is improved.

[0061] The present application also provides a clam larvae killing system, which comprises the circular planar array spoiler device.

[0062] According to some embodiments of the present application, the system for killing baby clams further comprises a monitoring device and a control device, the monitoring device is adapted to monitor the flow characteristics of the water body and the distribution characteristics of the baby clams; the control device is adapted to adjust the jet parameters of the circular planar array turbulence device according to the monitoring results of the monitoring device.

[0063] In the present embodiment, the monitoring device is used to obtain environmental parameters before the circular planar array turbulence device operates, to collect the flow information, water body parameters and baby clam distribution parameters of the target water area; and to monitor the jet turbulence characteristic parameters and the change of baby clams upstream and downstream of the target water body during the operation of the circular planar array turbulence device.

[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 disc 30; the control device realizes the generation of sufficient turbulent flow field and shear force by the circular planar array turbulence device, covers the target area range, and realizes the effective killing of baby clams.

[0065] Through the linkage of the circular planar array turbulence device, the monitoring device and the control device, the present application can realize real-time dynamic monitoring and immediate intervention of baby clams in the water body; and can improve the automation degree of killing baby clams, reduce the maintenance requirement, reduce the manual intervention, have high adaptability to complex environment, and are suitable for the management and application of baby clams in large-scale water area.

[0066] According to the above-mentioned circular planar array turbulence device, the method for killing baby clams in the water body and the system for killing baby clams, tests are carried out under the following test conditions:

[0067] The jet hole area of the circular planar array turbulence device is A 孔 = 0.0314 m 2 , the total flow Q = 300 m3 / h, the jet velocity V = Q / A 孔 ≈ 3.32 m / h, the turbulent velocity V 紊动 = 0.2 × V = 0.664 m / h; for the turbulent jet ejected by the jet hole, the turbulent field diffusion range R 紊动 is estimated by an empirical formula = 0.2 m, that is, the jet radius R 紊动 ≈ 0.2 m, and the radius R of the turbulent effect influence range ≈ 0.2 m.

[0068] After monitoring and calculation, the circular planar array turbulence device can realize 100% killing of baby clams in the target range, and the destruction of baby clams under the action of the circular planar array turbulence device is as follows: Figure 7The test results show that the device can effectively hinder the growth process of the clam larvae and greatly reduce the spread of the larvae to the downstream of the water body.

[0069] The above tests prove that the circular planar array spoiler device can effectively kill the clam larvae and greatly reduce the spread of the larvae. In engineering practical 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 the device can play a significant killing role in various complex water flow environments.

[0070] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0071] In the description of the present application, "first feature" and "second feature" can include one or more of the features.

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

[0073] In the description of the present application, "above" or "below" the first feature in the second feature can include that the first and second features are in direct contact, or can include that the first and second features are not in direct contact but are in contact through another feature between them.

[0074] In the description of the present application, "above", "over", and "on" the first feature in the second feature includes that the first feature is directly above and obliquely above the second feature, or only means that the first feature is higher in level than the second feature.

[0075] In the description of the present application, the description referring to the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0076] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and changes can be made by those skilled in the art without departing from the spirit and scope of the application. The scope of the application is not to be limited by the embodiments shown and described, but only by the claims and their equivalents.

Claims

1. A circular planar array spoiler device for use in the eradication of juvenile hard clam (Mercenaria mercenaria) larvae in a body of water, characterized by, include: A water storage barrel, wherein the water storage barrel is formed with a water inlet and a water outlet; A jet disc is rotatably disposed at the water outlet, a water storage cavity is formed in the water storage barrel, and a plurality of jet holes are formed on the jet disc and communicate with the water storage cavity; 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 marsh clam larvae.

2. The circular planform array spoiler device for the killing of juvenile hard clam larvae in a body of water of claim 1, wherein, Also includes: A driving member is provided 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 planform array spoiler device for the killing of juvenile hard clam larvae in a body of water of claim 2, wherein, 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 planform array spoiler device for the killing of juvenile hard clam larvae in a body of water of claim 3, wherein, The mounting frame comprises: a fixing portion connected to the water storage barrel, the water storage barrel being formed with a mounting portion suitable for connecting to the fixing portion, the mounting portion defining the 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 an output end of the driving member is connected to the jet disk.

5. The circular planform array spoiler device for the killing of juvenile hard clam larvae in a body of water of claim 4, wherein, 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 to the second matching portion.

6. The circular planform array spoiler device for the killing of juvenile hard clam larvae in a body of water of claim 1, wherein, When the circular plane array flow disruptor is used, the water outlet is arranged toward the downstream.

7. A method for the eradication of juvenile clams in a body of water, characterized in that, The circular plane array flow disturbance device for killing larvae of the marsh clam in water according to 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 the eradication of the larvae of the hard clam in water bodies according to claim 7, characterized by the fact 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 juvenile hard clam larvae, the system comprising: It comprises the circular plane array spoiler device as described in any one of claims 1 to 6.

10. The system of claim 9, wherein the system is configured to: Also includes: A monitoring device, wherein the monitoring device is suitable for monitoring water flow characteristics of the water body and distribution characteristics of the marsh 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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