A strong tidal current profile observation buoy device

Abstract

This application discloses a strong current-type profile observation buoy device, comprising: a hollow buoy body with an opening at its lower end; a pulley located within the buoy body; a winding motor installed within the buoy body; a detection element with a measuring sensor mounted on it; a cable, one end connected to the upper end of the detection element, and the other end connected to the winding motor after passing through the pulley; and a counterweight mechanism disposed within the buoy body, comprising multiple counterweight blocks of different masses, which are detachably connected to the lower end of the detection element. This application, by setting up a counterweight mechanism, allows for switching between counterweight blocks of different masses installed on the detection element as needed, effectively reducing power consumption during deployment and retrieval during weak current periods while ensuring the sensor is not carried away by the current.

Description

Technical Field

[0001] This invention relates to the field of marine equipment, and more specifically to a strong tidal current profile observation buoy device. Background Technology

[0002] Currently, long-term unmanned fixed-point observation platforms near the coast are mainly based on buoys. There are two types of buoys: one type measures surface seawater temperature, salinity, depth, turbidity, and other factors, with the measurement sensors installed at the bottom of the buoy; the other type measures full-depth profile temperature, salinity, depth, and turbidity, with the measurement sensors installed inside the buoy and deployed and retrieved by an internal winch to achieve profile observation.

[0003] Existing profiling buoys are not suitable for areas with strong tidal currents. Areas with strong tidal currents have large tidal ranges, require high sampling rates, and have relatively light sensor weights. To ensure that the sensor is not carried away by the tidal current, a certain amount of weight needs to be added. However, if the weight is considered based on the maximum tidal current, the power consumption during deployment and retrieval during weak currents will be too high, which may cause the profiling buoy to fail to meet the power requirements of the winch. Summary of the Invention

[0004] In view of the above problems and to overcome at least one deficiency, the present invention proposes a strong tidal current profile observation buoy device.

[0005] The technical solution adopted in this invention is as follows:

[0006] A strong tidal current profile observation buoy device includes:

[0007] The buoy body is hollow, with an opening at the bottom.

[0008] The pulley is located within the buoy body;

[0009] A winding motor is installed inside the buoy body;

[0010] A testing component, on which a measuring sensor is mounted;

[0011] One end of the cable is connected to the upper end of the detection element, and the other end is connected to the winding motor after passing around the rotating part.

[0012] A counterweight mechanism is installed inside the buoy body. The counterweight mechanism includes multiple counterweight blocks of different masses, which are detachably connected to the lower end of the detection element.

[0013] This application, by setting a counterweight mechanism, allows for the switching of counterweight blocks of different masses on the detection component as needed. This ensures that the sensor is not carried away by the current, while effectively reducing the power consumption during deployment and retrieval in weak currents.

[0014] In one embodiment of the present invention, the counterweight block and the lower end of the detection element are magnetically attracted together, and the counterweight mechanism includes a counterweight switching component and a counterweight unloading component.

[0015] The counterweight switching component includes:

[0016] A support frame is rotatably mounted within the buoy body. The upper surface of the support frame has multiple positioning slots, and the counterweight is placed in the corresponding positioning slot. The support frame has a clearance working position and multiple different loading / unloading working positions, each corresponding to a positioning slot. In the clearance working position, the support frame is offset from the space swept by the detection component during lifting and lowering. In the loading / unloading working position, the corresponding positioning slot of the support frame is located directly below the detection component.

[0017] A servo motor is fixed inside the buoy body. The rotation shaft of the servo motor is fixed to the support frame. The servo motor is used to drive the support frame to rotate and switch working positions.

[0018] The unloading counterweight component includes:

[0019] The annular component is capable of moving up and down. When the detection component retracts upward into the buoy body, the annular component is wrapped around the detection component.

[0020] An electric push rod is provided, with its piston rod fixed to the annular component. When the counterweight needs to be unloaded, the electric push rod is used to push the annular component downwards to contact the counterweight on the annular component.

[0021] In practical applications, the operation method for loading the counterweight block by the counterweight mechanism is as follows:

[0022] The servo motor controls the support frame to be in an obstacle-avoiding working position;

[0023] The inspection piece was moved upwards into the buoy body and positioned above the support frame;

[0024] The servo motor controls the support frame to be in a loading and unloading position;

[0025] The winding motor controls the detection element to move downwards, so that the lower end of the detection element is magnetically attracted to the counterweight directly below;

[0026] The winding motor controls the detection component and the counterweight adsorbed on the detection component to move upward, and the counterweight disengages from the positioning groove;

[0027] The servo motor controls the support frame to be in the avoidance working position.

[0028] The counterweight mechanism has two unloading methods. The first unloading method is:

[0029] The servo motor controls the support frame to be in an obstacle-avoiding working position;

[0030] The inspection piece was moved upwards into the buoy body and positioned above the support frame;

[0031] The servo motor controls the support frame to be in the corresponding loading and unloading position;

[0032] The electric push rod pushes the ring-shaped part down to contact the counterweight on the ring-shaped part, causing the counterweight to detach from the detection piece and fall into the positioning groove directly below.

[0033] The first uninstallation method is:

[0034] The servo motor controls the support frame to be in an obstacle-avoiding working position;

[0035] The inspection piece was moved upwards into the buoy body and positioned above the support frame;

[0036] The servo motor controls the support frame to be in the corresponding loading and unloading position;

[0037] The winding motor controls the detection component to move downwards, so that the counterweight below the detection component is positioned on the corresponding positioning slot;

[0038] The electric actuator pushes the ring-shaped component downwards, bringing it into contact with the counterweight on the ring-shaped component;

[0039] The winding motor controls the detection element to move upward, causing the counterweight to detach from the detection element.

[0040] In practical applications, one of the two parts, the counterweight and the detection component, has a magnet and the other has iron, or both parts have magnets.

[0041] In one embodiment of the present invention, a float is fixed below the support frame, and after the strong tidal current profile observation buoy device is placed at sea, the float is partially underwater.

[0042] To save space, the support frame is set in an umbrella shape (the center line of each positioning slot is the same distance from the rotation axis of the support frame). With this setting, the center of gravity of the support frame is not on the rotation center. By setting up floats, the sea entering the buoy body can be effectively utilized to apply an upward force to the support frame using buoyancy, thereby reducing the torque of the support frame on the rotation axis of the servo motor.

[0043] In one embodiment of the present invention, the positioning groove is conical, the lower end face of the detection element has a conical hole, the upper end face of the counterweight has a first conical portion that mates with the conical hole, and the lower end face of the counterweight has a second conical portion that mates with the positioning groove.

[0044] The tapered design facilitates self-positioning.

[0045] In one embodiment of the present invention, a limiting plate is further included, which is fixed inside the upper part of the buoy body. The pulley is located above the limiting plate, and the detection element is located below the limiting plate. The lower end of the limiting plate has a limiting groove, the side wall of the limiting groove is conical, the upper end of the detection element is also conical, the bottom wall of the limiting groove has a through hole for the cable to pass through, and the bottom wall of the limiting groove also has a limit switch that cooperates with the upper end of the detection element to provide feedback on the upward movement of the detection element.

[0046] In one embodiment of the present invention, the lower part of the outer wall of the detection element has the measuring sensor, and the inner wall of the annular element has a plurality of nozzles evenly distributed around the axis of the annular element. The nozzles are used to spray water to clean the measuring sensor.

[0047] After the detection component is recovered into the buoy body, the high salinity seawater will crystallize on the surface, affecting the measurement accuracy of the measurement sensors (such as conductivity sensors). The nozzle can clean the surface of the measurement sensors to ensure the measurement accuracy of subsequent work.

[0048] The annular component of this application has three functions:

[0049] 1. It cooperates with the limiting groove of the limiting plate to reliably limit the recovered detection piece. That is, when the detection piece is at the top, the upper end of the detection piece is positioned in the limiting groove, and the detection piece is fitted inside the ring-shaped piece.

[0050] 2. Unload the counterweight;

[0051] 3. The measuring sensor is cleaned by changing the up and down position of the nozzle.

[0052] In practical applications, it also includes a water tank and a water pump, with the water pump used to pump water from the tank into the nozzles for rinsing.

[0053] In one embodiment of the present invention, the inner sidewall of the annular member includes a conical region located below, and the inner sidewall of the annular member also has an annular groove, and the nozzle is completely disposed within the annular groove.

[0054] The conical area allows the test piece to quickly and easily enter the annular part when it moves upward. The design of the annular groove allows the nozzle to be completely placed inside the annular groove, preventing interference between the nozzle and the outer wall of the test piece.

[0055] In one embodiment of the present invention, the buoy body includes:

[0056] A ring-shaped buoyancy base;

[0057] The cover is fixed to the buoyancy base.

[0058] In one embodiment of the present invention, an acoustic Doppler current profiler is installed below the buoyancy base.

[0059] By installing an acoustic Doppler current profiler, full-depth water flow data can be observed, providing a basis for the load on the test equipment. When the flow velocity is strong, a heavier counterweight should be selected, while when the flow velocity is low, a lighter counterweight can be selected.

[0060] In one embodiment of the present invention, it further includes:

[0061] The battery is mounted on the cover or buoyancy base.

[0062] The solar charging panel is fixed to the outer wall of the enclosure;

[0063] The controller is used to control the operation of the strong tidal current profile observation buoy device.

[0064] In practical applications, components such as communication transmission antennas, GPS positioning modules, anchor lights, and wind speed and direction sensors can also be installed on the top of the outer side of the enclosure.

[0065] In practical applications, the controller can perform threshold judgments after receiving flow velocity information from the acoustic Doppler current profiler to determine the strength of the tidal current. If the current is strong, a large counterweight is loaded and lowered; if the current is weak, a small counterweight is loaded and lowered. After completing one test, the test piece returns to the buoy body, and the controller transmits the collected data to the shore for reception and display via a communication antenna.

[0066] In practical applications, lighter Kevlar ropes can be used for the cables.

[0067] In one embodiment of the invention, a tidal current generator connected to a buoyancy base is also included. By utilizing tidal current energy and solar power, more electricity can be provided to meet the requirements of high-frequency detection.

[0068] The beneficial effects of this invention are: by setting a counterweight mechanism, this application can switch the installation of counterweight blocks of different masses on the detection component as needed, which can effectively reduce the power consumption of the release and take-up during weak currents while ensuring that the sensor is not carried away by the current. Attached Figure Description

[0069] Figure 1 This is a schematic diagram of a strong tidal current profile observation buoy device;

[0070] Figure 2 This is a schematic diagram of another angle of the strong current profile observation buoy device;

[0071] Figure 3 This is a top view of a strong tidal current profile observation buoy device;

[0072] Figure 4 yes Figure 3 AA section view;

[0073] Figure 5 yes Figure 4 Enlarged view of point B in the middle;

[0074] Figure 6 yes Figure 4 Enlarged view of point C in the middle;

[0075] Figure 7 yes Figure 4 Enlarged view at point D;

[0076] Figure 8 This is a schematic diagram showing the inspection piece being lowered after being loaded with counterweights;

[0077] Figure 9 yes Figure 8 Enlarged view at point E in the middle;

[0078] Figure 10 This is a schematic diagram showing the downward movement of the detection piece and its adsorption by the corresponding counterweight.

[0079] Figure 11 This is a schematic diagram showing the movement of the annular component to the location of the measuring sensor;

[0080] Figure 12 This is a schematic diagram showing the testing component and counterweight directly above the positioning slot;

[0081] Figure 13 This is a schematic diagram of the ring-shaped component moving to the measuring sensor.

[0082] The labels for the attached figures are as follows:

[0083] 1. Buoy body; 11. Buoyancy base; 12. Cover; 13. Acoustic Doppler current profiler; 14. Solar charging panel; 2. Pulley; 3. Detection component; 31. Measuring sensor; 32. Conical hole; 4. Rewinding motor; 5. Cable; 61. Counterweight switching assembly; 611. Support frame; 6111. Positioning groove; 612. Servo motor; 613. Float; 62. Unloading counterweight assembly; 621. Ring-shaped component; 6211. Conical area; 6212. Annular groove; 6213. Nozzle; 622. Electric push rod; 63. Counterweight block; 631. First conical part; 632. Second conical part; 7. Limiting plate; 71. Limiting groove; 72. Through hole; 73. Limit switch. Detailed Implementation

[0084] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0085] In the description of this application, it should be noted that the terms "inner" and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0086] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0087] The present invention will now be described in detail with reference to the accompanying drawings.

[0088] like Figures 1-13 As shown, a strong current profile observation buoy device includes:

[0089] The buoy body 1 is hollow, and the lower end of the buoy body 1 is open;

[0090] Pulley 2 is located inside buoy body 1;

[0091] The winding motor 4 is installed inside the buoy body 1;

[0092] Detection component 3, on which a measuring sensor 31 is installed;

[0093] Cable 5, one end is connected to the upper end of the detection piece 3, and the other end is connected to the winding motor 4 after passing around the rotating part;

[0094] The counterweight mechanism is installed inside the buoy body 1. The counterweight mechanism includes multiple counterweight blocks 63 of different masses. The counterweight blocks 63 are used for detachable connection with the lower end of the detection element 3.

[0095] This application, by setting a counterweight mechanism, can switch the installation of counterweight blocks 63 of different masses on the detection component 3 as needed. While ensuring that the sensor is not carried away by the current, it can effectively reduce the power consumption of the release and take-off during weak current periods.

[0096] like Figure 2 , 4 As shown in Figure 8, in this embodiment, the counterweight 63 is magnetically attracted to the lower end of the detection element 3, and the counterweight mechanism includes a counterweight switching component 61 and an unloading counterweight component 62.

[0097] The counterweight switching component 61 includes:

[0098] The support frame 611 is rotatably mounted inside the buoy body 1. The upper surface of the support frame 611 has multiple positioning slots 6111, and counterweights 63 are placed in the corresponding positioning slots 6111. The support frame 611 has a clearance working position and multiple different loading / unloading working positions, each corresponding to a positioning slot 6111. In the clearance working position, the support frame 611 is offset from the space swept by the detection element 3 during lifting and lowering. In the loading / unloading working position, the corresponding positioning slot 6111 of the support frame 611 is located directly below the detection element 3.

[0099] Servo motor 612 is fixed inside the buoy body 1. The rotation shaft of servo motor 612 is fixed to the support frame 611. Servo motor 612 is used to drive the support frame 611 to rotate and switch working positions.

[0100] Unloading counterweight component 62 includes:

[0101] The annular component 621 can move up and down. When the detection component 3 is retracted upward into the buoy body 1, the annular component 621 is wrapped around the detection component 3.

[0102] The electric push rod 622 has its piston rod fixed to the ring 621. When it is necessary to unload the counterweight 63, the electric push rod 622 is used to push the ring 621 down to contact the counterweight 63 on the ring 621.

[0103] In practical applications, the operation method for loading the counterweight 63 by the counterweight mechanism is as follows:

[0104] The servo motor 612 controls the support frame 611 to be in the avoidance working position;

[0105] The detection component 3 is moved upward into the buoy body 1 and is located above the support frame 611;

[0106] The servo motor 612 controls the support frame 611 to be in a loading and unloading working position;

[0107] See Figure 10The winding motor 4 controls the detection element 3 to move downward, so that the lower end of the detection element 3 is magnetically attracted to the counterweight 63 directly below it;

[0108] See Figure 11 The winding motor 4 controls the detection element 3 and the counterweight 63 adsorbed on the detection element 3 to move upward, and the counterweight 63 disengages from the positioning groove 6111;

[0109] Servo motor 612 controls the support frame 611 to be in the avoidance working position.

[0110] The counterweight mechanism has two unloading methods. The first unloading method is:

[0111] The servo motor 612 controls the support frame 611 to be in the avoidance working position;

[0112] The detection component 3 is moved upward into the buoy body 1 and is located above the support frame 611;

[0113] The servo motor 612 controls the support frame 611 to be in the corresponding loading and unloading position;

[0114] The electric push rod 622 pushes the ring 621 down to contact the counterweight 63 on the ring 621, causing the counterweight 63 to fall off the detection piece 3 and onto the positioning groove 6111 directly below.

[0115] The second uninstallation method is:

[0116] The servo motor 612 controls the support frame 611 to be in the avoidance working position;

[0117] See Figure 11 The detection component 3 is moved up into the buoy body 1 and is located above the support frame 611. The servo motor 612 controls the support frame 611 to be in the corresponding loading and unloading position.

[0118] See Figure 10 The winding motor 4 controls the detection element 3 to move down, so that the counterweight 63 below the detection element 3 is located on the corresponding positioning groove 6111;

[0119] See Figure 12 The electric push rod 622 pushes the ring 621 down to contact the counterweight 63 on the ring 621. The winding motor 4 controls the detection element 3 to move up, so that the counterweight 63 is separated from the detection element 3.

[0120] In practical applications, one of the two parts, counterweight 63 and detection component 3, has a magnet and the other has iron, or both parts have magnets.

[0121] like Figure 2 and 4As shown, in this embodiment, a float 613 is fixed below the support frame 611. After the strong current profile observation buoy device is placed at sea, part of the float 613 is underwater.

[0122] To save space, the support frame 611 is set in an umbrella shape (the center line of each positioning groove 6111 is the same as the rotation axis of the support frame 611). With this setting, the center of gravity of the support frame 611 is not on the rotation center. By setting the float 613, the sea entering the buoy body 1 can be effectively utilized to apply an upward force to the support frame 611 using buoyancy, thereby reducing the torque of the support frame 611 on the rotation axis of the servo motor 612.

[0123] like Figure 4 and 7 As shown, in this embodiment, the positioning groove 6111 is conical, the lower end face of the detection element 3 has a conical hole 32, the upper end face of the counterweight 63 has a first conical part 631 that cooperates with the conical hole 32, and the lower end face of the counterweight 63 has a second conical part 632 that cooperates with the positioning groove 6111.

[0124] The tapered design facilitates self-positioning.

[0125] like Figure 4 and 5 As shown, in this embodiment, a limiting plate 7 is fixed inside the upper part of the buoy body 1. The pulley 2 is located above the limiting plate 7, and the detection element 3 is located below the limiting plate 7. The lower end of the limiting plate 7 has a limiting groove 71. The side wall of the limiting groove 71 is conical, and the upper end of the detection element 3 is also conical. The bottom wall of the limiting groove 71 has a through hole 72 for the cable to pass through. The bottom wall of the limiting groove 71 also has a limit switch 73 that cooperates with the upper end of the detection element 3 to provide feedback on the upward movement of the detection element 3.

[0126] like Figure 4 , 6 As shown in Figures 8 and 9, in this embodiment, the lower part of the outer wall of the detection element 3 has a measuring sensor 31, and the inner wall of the annular element 621 has a plurality of nozzles 6213 evenly distributed around the axis of the annular element 621. The nozzles 6213 are used to spray water to clean the measuring sensor 31.

[0127] After the detection component 3 is retrieved into the buoy body 1, the high-salinity seawater will crystallize on the surface, affecting the measurement accuracy of the measuring sensor 31 (such as the conductivity sensor). The nozzle 6213 can clean the surface of the measuring sensor 31 to ensure the measurement accuracy in subsequent operations. In actual use, it also includes a water tank (not shown in the figure) and a water pump (not shown in the figure). The water pump is used to input water from the water tank into the nozzle 6213 for rinsing.

[0128] The annular member 621 of this application has three functions:

[0129] 1. Cooperating with the limiting groove 71 of the limiting plate 7, the recovered detection piece 3 is reliably limited, that is, when the detection piece 3 is at the top, the upper end of the detection piece 3 is positioned in the limiting groove 71, and the detection piece 3 is inner sleeved on the annular piece 621.

[0130] 2. Unload counterweight 63;

[0131] 3. The measuring sensor 31 is cleaned by changing the up and down position of the nozzle 6213.

[0132] like Figure 6 As shown, in this embodiment, the inner wall of the annular member 621 includes a conical region 6211 located below, and the inner wall of the annular member 621 also has an annular groove 6212, with the nozzle 6213 completely disposed within the annular groove 6212.

[0133] The conical region 6211 facilitates the quick and easy entry of the detection piece 3 into the annular piece 621 when it moves upward. The design of the annular groove 6212 allows the nozzle 6213 to be completely placed within the annular groove 6212, preventing interference between the nozzle 6213 and the outer wall of the detection piece 3.

[0134] like Figure 1 and 4 As shown, in this embodiment, the buoy body 1 includes:

[0135] 11-shaped buoyancy base;

[0136] The cover 12 is fixed on the buoyancy base 11.

[0137] like Figure 2 As shown, in this embodiment, an acoustic Doppler current profiler 13 is installed below the buoyancy base 11.

[0138] By installing an acoustic Doppler current profiler 13, full-depth water flow data can be observed, providing a basis for the load on the detection element 3. When the flow velocity is strong, a heavier counterweight 63 is selected; when the flow velocity is low, a lighter counterweight 63 can be selected.

[0139] like Figure 1 As shown, in this embodiment, it also includes:

[0140] A storage battery (not shown in the figure) is mounted on the cover 12 or the buoyancy base 11;

[0141] The solar charging panel 14 is fixed to the outer wall of the cover 12;

[0142] The controller (not shown in the figure) is used to control the operation of the strong current profile observation buoy device.

[0143] In practical applications, components such as communication transmission antennas, GPS positioning modules, anchor lights, and wind speed and direction sensors can also be installed on the top outer side of the cover 12.

[0144] In practical applications, the controller can perform threshold judgment after receiving the flow velocity information from the acoustic Doppler current profiler 13 to determine the strength of the tidal current. If the tidal current is strong, a large-mass counterweight 63 is lowered; if the tidal current is weak, a small-mass counterweight 63 is lowered. After completing one detection, the detection element 3 returns to the buoy body 1, and the controller transmits the collected data to the shore for reception and display via the communication transmission antenna.

[0145] In practical applications, lighter Kevlar ropes can be used for the cables.

[0146] In practical applications, it can also include a tidal current generator connected to a buoyancy base, which is electrically connected to a battery and a controller. By utilizing tidal current energy and solar power, more electricity can be provided to meet the needs of high-frequency detection.

[0147] The above description is merely a preferred embodiment of the present invention and does not limit the scope of patent protection of the present invention. Any equivalent structural transformations made based on the description and drawings of the present invention, whether directly or indirectly applied to other related technical fields, are similarly included within the scope of protection of the present invention.

Claims

1. A strong tidal current profile observation buoy device, characterized by, include: The buoy body is hollow, with an opening at the bottom. The pulley is located within the buoy body; A winding motor is installed inside the buoy body; A testing component, on which a measuring sensor is mounted; The cable has one end connected to the upper end of the detection piece, and the other end connected to the winding motor after passing around the pulley. A counterweight mechanism is installed inside the buoy body. The counterweight mechanism includes multiple counterweight blocks of different masses. The counterweight blocks are detachably connected to the lower end of the detection element. The counterweight block is magnetically attracted to the lower end of the detection component, and the counterweight mechanism includes a counterweight switching component and a counterweight unloading component. The counterweight switching component includes: A support frame is rotatably mounted within the buoy body. The upper surface of the support frame has multiple positioning slots, and the counterweight is placed in the corresponding positioning slot. The support frame has a clearance working position and multiple different loading / unloading working positions, each corresponding to a positioning slot. In the clearance working position, the support frame is offset from the space swept by the detection component during lifting and lowering. In the loading / unloading working position, the corresponding positioning slot of the support frame is located directly below the detection component. A servo motor is fixed inside the buoy body. The rotation shaft of the servo motor is fixed to the support frame. The servo motor is used to drive the support frame to rotate and switch working positions. The unloading counterweight component includes: The annular component is capable of moving up and down. When the detection component retracts upward into the buoy body, the annular component is wrapped around the detection component. An electric push rod is provided, with its piston rod fixed to the annular component. When the counterweight needs to be unloaded, the electric push rod is used to push the annular component downwards to contact the counterweight on the annular component.

2. The strong tidal current profile observation buoy apparatus according to claim 1, characterized by A buoy is fixed below the support frame. After the strong current profile observation buoy device is placed at sea, the buoy is partially underwater.

3. The strong tidal current profile observation buoy apparatus as claimed in claim 1, wherein The positioning groove is conical, the lower end face of the detection element has a conical hole, the upper end face of the counterweight has a first conical part that mates with the conical hole, and the lower end face of the counterweight has a second conical part that mates with the positioning groove.

4. The strong tidal current profile observation buoy apparatus of claim 1, wherein It also includes a limiting plate fixed inside the upper part of the buoy body, the pulley is located above the limiting plate, the detection element is located below the limiting plate, the lower end of the limiting plate has a limiting groove, the side wall of the limiting groove is conical, the upper end of the detection element is also conical, the bottom wall of the limiting groove has a through hole for the cable to pass through, and the bottom wall of the limiting groove also has a limit switch that cooperates with the upper end of the detection element to provide feedback on the detection element moving into position.

5. The strong tidal current profile observation buoy apparatus as claimed in claim 4, wherein The measuring sensor is located on the lower part of the outer wall of the detection component, and the inner wall of the annular component has a plurality of nozzles evenly distributed around the axis of the annular component. The nozzles are used to spray water to clean the measuring sensor.

6. The strong tidal current profile observation buoy device as described in claim 5, characterized in that, The inner wall of the annular component includes a conical region located below, and the inner wall of the annular component also has an annular groove, in which the nozzle is completely disposed.

7. The strong tidal current profile observation buoy apparatus of claim 1, wherein The buoy body includes: A ring-shaped buoyancy base; The cover is fixed to the buoyancy base.

8. The strong tidal current profile observation buoy apparatus as claimed in claim 7, wherein An acoustic Doppler current profiler is installed below the buoyancy base.

9. The strong tidal current profile observation buoy apparatus as claimed in claim 8, wherein Also includes: The battery is mounted on the cover or buoyancy base. The solar charging panel is fixed to the outer wall of the enclosure; The controller is used to control the operation of the strong tidal current profile observation buoy device.

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