Ocean current sensor fixing device, ocean current measuring device and ocean current observation platform

The sea current sensor fixation system addresses the issues of magnetic interference and vibrations in floating platforms by using non-magnetic materials and a universal joint mechanism, enhancing measurement accuracy and data reliability.

CN223106959UActive Publication Date: 2025-07-15STATE OCEAN TECH CENT
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Patent Information

Application Number
CN202422423114.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-10-09
Publication Date
2025-07-15
Estimated Expiration
2034-10-09

AI Technical Summary

Technical Problem

The magnetic properties of the steel material of the existing floating platform affect the accuracy of current sensor measurement, and the violent shaking in high sea conditions leads to a significant reduction in the accuracy of current measurement.

Method used

The current sensor fixing device made of magnetic-free materials includes a universal follower mechanism and a current limiting mechanism. The current sensor is fixed under the floating platform and rotates through the universal follower mechanism to resist the platform shaking. The current limiting mechanism is used to maintain the vertical state of the sensor.

Benefits of technology

The magnetic effect of the steel material of the floating platform on the current sensor is reduced, the accuracy of current flow direction measurement and the stability of the floating platform are improved, and the reliability of current measurement is enhanced.

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Abstract

The utility model discloses an ocean current sensor fixing device, which relates to the technical field of ocean current observation and mainly comprises a universal follow-up mechanism and an ocean current limiting mechanism, the top of the universal follow-up mechanism is used for being fixed with a floating platform, and the ocean current limiting mechanism is positioned below the universal follow-up mechanism and is fixedly connected with the bottom of the universal follow-up mechanism. The ocean current limiting mechanism can rotate relative to the floating platform through the universal follow-up mechanism; wherein the ocean current limiting mechanism is used for fixing the ocean current sensor. The utility model further provides an ocean current measuring device which comprises the ocean current sensor and the ocean current sensor fixing device. The utility model further provides an ocean current observation platform which comprises a floating platform and the ocean current measurement device. According to the utility model, the influence of the magnetism of the steel material of the floating platform on the ocean current sensor is reduced, the ocean current sensor is basically not influenced by the shaking of the floating platform, and the accuracy of ocean current measurement is improved.
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Description

Technical Field

[0001] The utility model relates to the technical field of ocean current observation, in particular to a fixing device for an ocean current sensor, an ocean current measuring device and an ocean current observation platform. Background Art

[0002] Ocean current observation is not only of great significance for people to understand the ocean environment, climate change, fishery and ocean resource development, but also helps to predict ocean disasters such as tsunamis and storm surges, give early warnings and take corresponding defensive measures to reduce losses and protect people's lives and property safety. At present, ocean current observation is mainly carried out through floating platform observation and remote sensing observation means. Since floating platforms can obtain necessary meteorological and hydrological observation data in real time for a long time, floating platforms are currently commonly used ocean current observation platforms.

[0003] The existing ocean current observation technology based on floating platforms mainly installs ocean current sensors on floating platforms to obtain flow velocity and direction data. However, floating platforms are generally made of steel materials or have steel skeletons inside. The magnetism of the steel structure will cause poor accuracy in direction measurement. Although there is already an external azimuth compass method to reduce the measurement error of the steel materials of the floating platform on the ocean current direction, in high sea conditions, the floating platform shakes violently, and the accuracy of ocean current measurement is greatly reduced, resulting in the inability to use valuable observation data.

[0004] Therefore, there is an urgent need to provide an ocean current measuring device to solve the above problems existing in the prior art. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a fixing device for an ocean current sensor, an ocean current measuring device and an ocean current observation platform to solve the above problems existing in the prior art, reduce the influence of the magnetism of the steel materials of the floating platform on the ocean current sensor, and make the ocean current sensor basically not affected by the shaking of the floating platform, thereby improving the accuracy of ocean current measurement.

[0006] To achieve the above purpose, the utility model provides the following scheme:

[0007] The utility model provides a fixing device for an ocean current sensor, which includes a universal follow-up mechanism and an ocean current limiting mechanism. The top of the universal follow-up mechanism is used to be fixed to a floating platform. The ocean current limiting mechanism is located below the universal follow-up mechanism and is fixedly connected to the bottom of the universal follow-up mechanism. The ocean current limiting mechanism can rotate relative to the floating platform through the universal follow-up mechanism; wherein, the ocean current limiting mechanism is used to fix the ocean current sensor.

[0008] Preferably, the fixing device for the ocean current sensor is processed from non-magnetic materials.

[0009] Preferably, the universal follow-up mechanism includes an upper flange base, a middle body connection block, and a lower flange base. The top of the upper flange base is used to be fixed to the floating platform, and the bottom is rotatably connected to the middle body connection block through a first limit pin shaft. The bottom of the lower flange base is fixedly connected to the sea current limit mechanism, and the top is rotatably connected to the middle body connection block through a second limit pin shaft; wherein, the first limit pin shaft and the second limit pin shaft are perpendicular to each other.

[0010] Preferably, through holes are provided on the upper flange base, the middle body connection block, and the lower flange base for the cables of the floating platform to pass through; wherein, the cables of the floating platform are armored cables passing through the cabin.

[0011] Preferably, the sea current limit mechanism includes a top fixed seat and an anchor connection base. The top fixed seat is connected to the bottom of the universal follow-up mechanism. The anchor connection base is located below the top fixed seat, and the top fixed seat and the anchor connection base are connected by a plurality of support rods. The plurality of support rods enclose a fixed space for fixing the sea current sensor.

[0012] Preferably, a limit clamping ring is provided on any one of the support rods, and the limit clamping rings on the plurality of support rods jointly lock the sea current sensor.

[0013] Preferably, the top fixed seat includes a rotating flange base, a connecting cylinder, and a fixed base. The top of the rotating flange base is fixedly connected to the bottom of the universal follow-up mechanism, and the bottom is rotatably connected to the top of the fixed base through the connecting cylinder. The bottom of the fixed base is connected to the anchor connection base through the support rod;

[0014] Wherein, a cable watertight connection seat is provided on the rotating flange base for connecting the cables of the floating platform, and a cable watertight connection seat is provided on the fixed base for connecting the equipment cables of the sea current sensor, and the two cable watertight connection seats are electrically connected.

[0015] Preferably, the sea current limit mechanism further includes a limit column and a limit column base; wherein, there are two support rods, and the two support rods are respectively located on both sides of the sea current sensor. The two ends of the limit column base are respectively fixed on the two support rods, and the limit column is fixed in the middle of the limit column base and is located above the sea current sensor for limiting;

[0016] The ocean current limiting mechanism also includes two protective brackets, which are respectively located on both sides of the ocean current sensor, and the two protective brackets and the two support rods are distributed in a cross shape; wherein the top end of any one of the protective brackets is fixedly connected to the limiting column base, and the bottom end is fixedly connected to the anchor connection base.

[0017] The utility model also provides an ocean current measuring device, comprising an ocean current sensor and the ocean current sensor fixing device as described above.

[0018] The utility model also provides an ocean current observation platform, comprising a floating platform and the ocean current measuring device as described above.

[0019] Compared with the prior art, the utility model has achieved the following technical effects:

[0020] In the utility model, the ocean current sensor is arranged below the floating platform through the ocean current limiting mechanism, so that the ocean current sensor is far away from the floating platform, reducing the influence of the magnetism of the steel material of the floating platform on the ocean current sensor, and improving the accuracy of the ocean current direction measurement; and the ocean current measuring device composed of the ocean current sensor fixing device and the ocean current sensor is located below the floating platform, which reduces the center of gravity of the floating platform, improves the stability of the floating platform, and helps to improve the measurement accuracy and service life of the meteorological observation equipment of the floating platform. Furthermore, the ocean current limiting mechanism in the utility model can rotate relative to the floating platform through the universal follower mechanism, so that the ocean current sensor is not affected by the shaking of the floating platform and is basically in a vertical state, which greatly improves the accuracy of the flow velocity and direction measurement, and provides highly reliable ocean current data support for marine scientific research. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 This is a schematic diagram of the structure of the ocean current measuring device in the embodiment of the utility model;

[0023] Figure 2 This is a structural schematic diagram of the universal follower mechanism in the embodiment of the utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the limiting mechanism in the embodiment of the utility model;

[0025] Figure 4This is a split schematic diagram of the ocean current observation platform in the embodiment of the present utility model.

[0026] In the figure: 1-universal follow-up mechanism; 2-ocean current limiting mechanism; 3-upper flange base; 4-middle body connection block; 5-first limiting pin shaft; 6-lower flange base; 7-cable watertight connection seat; 8-rotating flange base; 9-connecting cylinder; 10-fixed base; 11-limiting column base; 12-limiting column; 13-limiting snap ring; 14-supporting rod; 15-ocean current sensor; 16-protection bracket; 17-anchor system connection base; 18-floating platform; 19-through-hull armored cable; 20-equipment cable. Specific embodiments

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0028] The purpose of the present utility model is to provide an ocean current sensor fixing device, an ocean current measuring device and an ocean current observation platform to solve the problems existing in the above-mentioned prior art, reduce the influence of the magnetism of the steel material of the floating platform on the ocean current sensor, and make the ocean current sensor basically unaffected by the shaking of the floating platform, thereby improving the accuracy of ocean current measurement.

[0029] In order to make the above objects, features and advantages of the present utility model more obvious and understandable, the present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0030] Embodiment 1

[0031] As Figures 1 - 4 shown, in this embodiment, an ocean current sensor fixing device is provided, mainly including a universal follow-up mechanism 1 and an ocean current limiting mechanism 2. The top of the universal follow-up mechanism 1 is used to be fixed to the floating platform 18. The ocean current limiting mechanism 2 is located below the universal follow-up mechanism 1 and is fixedly connected to the bottom of the universal follow-up mechanism 1. The ocean current limiting mechanism 2 can rotate relative to the floating platform 18 through the universal follow-up mechanism 1. Among them, the ocean current limiting mechanism 2 is used to fix the ocean current sensor 15.

[0032] In this embodiment, the current sensor 15 is arranged below the floating platform 18 through the current limiting mechanism 2, so that the current sensor 15 is far away from the floating platform 18, reducing the influence of the magnetic properties of the steel material of the floating platform 18 on the current sensor 15, and improving the accuracy of the current direction measurement; and the current measurement device composed of the current sensor fixing device and the current sensor 15 is located below the floating platform 18, which reduces the center of gravity of the floating platform 18, improves the stability of the floating platform 18, and helps to improve the measurement accuracy and service life of the meteorological observation equipment of the floating platform 18. Further, in this embodiment, the current limiting mechanism 2 can rotate relative to the floating platform 18 through the universal follower mechanism 1, so that the current sensor 15 is not affected by the shaking of the floating platform 18 and is basically in a vertical state, which greatly improves the accuracy of the flow velocity and direction measurement, and provides highly reliable current data support for marine scientific research.

[0033] In this embodiment, the current sensor fixing device is made of non-magnetic material, which is non-magnetic itself, and basically avoids the influence of the magnetism of the steel material of the floating platform 18 on the current sensor 15; wherein, the non-magnetic material is preferably non-magnetic stainless steel material, which improves the overall strength and prolongs the service life while achieving non-magnetism. Further, the current sensor 15 can also be made of non-magnetic stainless steel material.

[0034] In this embodiment, if Figure 2 As shown, the universal follower mechanism 1 mainly includes an upper flange base 3, a middle body connecting block 4 and a lower flange base 6, the top of the upper flange base 3 is used to be fixed to the floating platform 18, and the bottom is rotatably connected to the middle body connecting block 4 through a first limit pin 5, the bottom of the lower flange base 6 is fixedly connected to the ocean current limiting mechanism 2, and the top is rotatably connected to the middle body connecting block 4 through a second limit pin; wherein, the first limit pin 5 and the second limit pin are horizontally arranged and perpendicular to each other, so as to realize the rotation of the ocean current limiting mechanism 2 in two directions relative to the floating platform 18.

[0035] Specifically, the upper part of the upper flange base 3 is a circular flat plate with a circular through-hole in the middle for the cable of the floating platform 18 to pass through. Among them, the cable of the floating platform 18 is an armored cable 19 passing through the cabin; and a plurality of bolt holes are evenly distributed along the circumference at the edge of the circular flat plate for bolt connection with the floating platform 18. And two ear plates are arranged side by side at the lower part of the circular flat plate, and the two ear plates are respectively located on the front and rear sides of the middle body connection block 4. And a round hole is provided at the lower part of the ear plate for the first limit pin 5 to pass through and rotate with the middle connection block. And the middle connection block is a cuboid structure with a circular through-hole penetrating up and down for the cable of the floating platform 18 to pass through. And round holes are provided on the front, rear, left and right of the middle connection block for connecting the first limit pin 5 and the second limit pin. The lower flange base 6 is similar in structure to the upper flange base 3. Its lower part is a circular flat plate with a circular through-hole in the middle for the cable of the floating platform 18 to pass through; and a plurality of bolt holes are evenly distributed along the circumference at the edge of the circular flat plate for bolt connection with the sea current limiting mechanism 2. And two ear plates are arranged side by side at the upper part of the circular flat plate, and the two ear plates are respectively located on the left and right sides of the middle body connection block 4. And a round hole is provided at the upper part of the ear plate for the second limit pin to pass through and rotate with the middle connection block.

[0036] In this embodiment, when the floating platform 18 sways, only the upper flange base 3 sways with the floating platform 18, and the lower flange base 6 and the sea current limiting mechanism 2 are not affected by the sway of the floating platform 18. When the floating platform 18 rotates, the rotating flange base 8 of the sea current limiting mechanism 2 rotates with the floating platform 18, and the lower half is not affected by the rotational movement of the platform, so that the sea current sensor 15 is basically in a vertical state.

[0037] Furthermore, it should be noted that other universal follow-up mechanisms 1 can also be selected according to specific working requirements, such as selecting a universal ball joint structure, etc.

[0038] In this embodiment, as Figure 3 shown, the sea current limiting mechanism 2 mainly includes a top fixing seat and an anchor connection base 17. The top fixing seat is connected to the bottom of the universal follow-up mechanism 1. The anchor connection base 17 is located below the top fixing seat and is used for anchor connection with the floating platform 18; among them, the top fixing seat and the anchor connection base 17 are connected by a plurality of support rods 14, and the plurality of support rods 14 are arranged around the top fixing seat and the anchor connection base 17 to enclose a fixed space for fixing the sea current sensor 15.

[0039] In this embodiment, the top fixing base mainly includes a rotating flange base 8, a connecting cylinder 9, and a fixing base 10. Among them, the top of the rotating flange base 8 is a circular flange, and a plurality of bolt holes are evenly distributed on the outer edge of the circular flange for bolt connection with the lower flange base 6. A threaded hole is provided in the middle of the rotating flange base 8, and a cable watertight connection base 7 is fixed on the rotating flange base 8 by threads. Another cable watertight connection base 7 is fixed below the fixing base 10 by threads. The two cable watertight connection bases 7 are used to connect the cables of the floating platform 18 and the equipment cable 20 of the sea current sensor 15.

[0040] In this embodiment, the rotating flange base 8, the connecting cylinder 9, and the fixing base 10 are coaxially arranged, and the bottom of the rotating flange base 8 is rotationally connected to the top of the fixing base 10 through the connecting cylinder 9, enabling the rotating flange base 8 and the fixing base 10 to rotate freely (rotate around their axes). Therefore, when the rotating flange base 8 rotates together with the floating platform 18, the fixing base 10 can remain stationary, thus ensuring that the area below the rotating flange base 8 is not affected by the platform's rotational movement.

[0041] Among them, the rotational connection method can be selected according to specific working requirements. For example, the bottom of the rotating flange base 8 is provided with an annular boss, the connecting cylinder 9 is a hollow cylinder, and its top is threadedly connected to the annular boss at the bottom of the rotating flange base 8. The bottom of the fixing base 10 is a circular flat plate, and an annular boss is provided on the circular flat plate and extends into the interior of the connecting cylinder 9 for rotational connection with the connecting cylinder 9. A threaded hole is provided below the middle of the circular flat plate for threaded connection with a cable watertight connection base 7. Alternatively, the connecting cylinder 9 can be divided into two parts of the cylinder, one part of the cylinder is fixedly connected to the rotating flange base 8, and the other part of the cylinder is fixedly connected to the fixing base, and the two parts of the cylinder can rotate relative to each other, thereby enabling the rotating flange base 8 and the fixing base 10 to rotate freely.

[0042] It should be further noted that the cable watertight connection base 7 on the rotating flange base 8 and the cable watertight connection base 7 below the fixing base 10 are electrically connected by a cable. Since the rotating flange base 8 can rotate relative to the fixing base 10 and drives the cable thereon to rotate when rotating, an electric slip ring is provided on the fixing base 10, and the cables on the two cable watertight connection bases 7 are connected through the electric slip ring. Thus, when the cable watertight connection base 7 on the rotating flange base 8 drives the cable connected thereto to rotate, electrical connection with the cable watertight connection base 7 below the fixing base 10 can be achieved.

[0043] In this embodiment, a limit retaining ring 13 is provided on each of the support rods 14, and the limit retaining rings 13 on the plurality of support rods 14 jointly lock the sea current sensor 15; specifically, the limit retaining ring 13 is an inverted L-shaped structure, including a horizontally connected portion and a vertically connected portion connected to each other. The horizontally connected portion is a hoop-shaped structure, and a vertically penetrating through hole is provided in the middle for the support rod 14 to pass through, and two horizontal through holes are provided on the side surface of the horizontally connected portion, and the two horizontal through holes are located on both sides of the support rod 14, and the limit retaining ring 13 can be fixed to the support rod 14 by bolts. The vertically connected portion is located on the side of the horizontally connected portion close to the sea current sensor 15 and can be attached to the sea current sensor 15, so that the sea current sensor 15 is jointly locked by the limit retaining rings 13 on the plurality of support rods 14, and the sea current sensor 15 is fixed in the sea current limiting mechanism 2; wherein, the sea current sensor 15 is a cylindrical structure, and round holes are provided on both sides of the bottom, and the side of the limit retaining ring 13 close to the sea current sensor 15 is an arc surface, which can better fit with it; further, fastening bolts can also be provided on the limit retaining ring 13 to assist in locking the sea current sensor 15.

[0044] In this embodiment, a circular boss is provided in the middle of the support rod 14, and the circular boss is located below the limit retaining ring 13, which can prevent the limit retaining ring 13 from falling off.

[0045] In this embodiment, preferably two support rods 14 are provided, and the two support rods 14 are respectively located on both sides of the sea current sensor 15; wherein, the support rod 14 is a round rod, and round holes are provided on both sides of the circular flat plate at the bottom of the fixed base 10 for fixing to the top of the support rod 14; the mooring connection base 17 is made of sheet metal, and round holes are provided on the left and right sides for fixing to the bottom of the support rod 14, and the bottom of the mooring connection base 17 is semi-circular, and a circular mooring hole is provided at the center of the arc for mooring connection with the floating platform 18.

[0046] In this embodiment, the sea current limiting mechanism 2 further includes a limit upright post 12 and a limit upright post base 11. The limit upright post base 11 is a cuboid structure, and round holes are respectively provided at both ends for fixing to the two support rods 14. The limit upright post 12 is fixed in the middle of the limit upright post base 11 and is located on the top of the sea current sensor 15 for limiting.

[0047] Further, the ocean current limiting mechanism 2 further comprises two protection brackets 16, the two protection brackets 16 are respectively located on both sides of the ocean current sensor 15, and the two protection brackets 16 and the two support rods 14 are distributed in a cross shape; wherein, the top end of any one of the protection brackets 16 is fixedly connected to the limiting column base 11, and the bottom end is fixedly connected to the anchor connection base 17. Specifically, the top end and the bottom end of the protection bracket 16 are respectively provided with fixing plates, and the two fixing plates are respectively fixedly connected to the limiting column base 11 and the anchor connection base 17 by bolts.

[0048] This embodiment also provides an ocean current measuring device, including an ocean current sensor 15 and the ocean current sensor fixing device as described above.

[0049] This embodiment also provides an ocean current observation platform, including a floating platform 18 and the ocean current measurement device as described above.

[0050] The method of using the ocean current measuring device in this embodiment is as follows:

[0051] First, connect the equipment cable 20 to the current sensor 15, and then connect it to the cable watertight connector 7; then pass the cabin-penetrating armored cable 19 through the upper flange base 3, the middle body connecting block 4 and the middle through hole on the lower flange base 6 in turn, and connect it to the cable watertight connector 7 on the rotating flange base 8; finally, fix the upper flange base 3 of the current measuring device to the floating platform 18 by bolts.

[0052] In this embodiment, when the ocean current measuring device is in use, the cabin-penetrating armored cable 19 is located in the middle of the universal follow-up mechanism 1. The shaking of the floating platform 18 does not affect the cabin-penetrating armored cable 19. The cabin-penetrating armored cable 19 can be directly connected to the floating platform 18 from the bottom, avoiding exposure to the water surface or human damage, thereby improving the reliability of the long-term on-site operation of the floating platform 18.

[0053] The present invention uses specific examples to illustrate the principle and implementation of the present invention. The above examples are only used to help understand the method and core idea of the present invention. At the same time, for those skilled in the art, according to the idea of the present invention, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A fixed device for a sea current sensor, characterized in that: It includes a universal follow-up mechanism and a sea current limiting mechanism. The top of the universal follow-up mechanism is used to be fixed to a floating platform. The sea current limiting mechanism is located below the universal follow-up mechanism and is fixedly connected to the bottom of the universal follow-up mechanism. The sea current limiting mechanism can rotate relative to the floating platform through the universal follow-up mechanism. Among them, the sea current limiting mechanism is used to fix a sea current sensor.

2. The sea current sensor fixing device according to claim 1, characterized in that: The sea current sensor fixing device is processed from non-magnetic materials.

3. The current sensor fixing device according to claim 1, wherein: The universal follow-up mechanism includes an upper flange base, a middle body connection block and a lower flange base. The top of the upper flange base is used to be fixed to the floating platform, and the bottom is rotationally connected to the middle body connection block through a first limit pin shaft. The bottom of the lower flange base is fixedly connected to the sea current limiting mechanism, and the top is rotationally connected to the middle body connection block through a second limit pin shaft. Among them, the first limit pin shaft and the second limit pin shaft are perpendicular to each other.

4. The sea current sensor fixing device according to claim 3, characterized in that: Through holes are provided on the upper flange base, the middle body connection block and the lower flange base for the cables of the floating platform to pass through. Among them, the cables of the floating platform are armored cables passing through the cabin.

5. The fixing device for the sea current sensor according to claim 1, wherein: The sea current limiting mechanism includes a top fixing seat and an anchor connection base. The top fixing seat is connected to the bottom of the universal follow-up mechanism. The anchor connection base is located below the top fixing seat, and the top fixing seat and the anchor connection base are connected by a plurality of support rods. The plurality of support rods enclose a fixing space for fixing the sea current sensor.

6. The fixing device for the ocean current sensor according to claim 5, characterized in that: A limit snap ring is provided on any one of the support rods, and the limit snap rings on the plurality of support rods jointly lock the sea current sensor.

7. The fixing device for the ocean current sensor according to claim 5, characterized in that: The top fixing seat includes a rotating flange base, a connecting cylinder and a fixing base. The top of the rotating flange base is fixedly connected to the bottom of the universal follow-up mechanism, and the bottom is rotationally connected to the top of the fixing base through the connecting cylinder. The bottom of the fixing base is connected to the anchor connection base through the support rods. Among them, a cable watertight connection seat is provided on the rotating flange base for connecting the cables of the floating platform, and a cable watertight connection seat is provided on the fixing base for connecting the equipment cables of the sea current sensor, and the two cable watertight connection seats are electrically connected.

8. The seacurrent sensor fixing device according to claim 5 or 6, characterized in that: The sea current limiting mechanism further includes a limit column and a limit column base. Among them, there are two support rods, and the two support rods are respectively located on both sides of the sea current sensor. The two ends of the limit column base are respectively fixed on the two support rods, and the limit column is fixed in the middle of the limit column base and is located on the top of the sea current sensor for limiting. The sea current limiting mechanism further includes two protection brackets. The two protection brackets are respectively located on both sides of the sea current sensor, and the two protection brackets and the two support rods are distributed in a cross shape. Among them, the top end of any one of the protection brackets is fixedly connected to the limit column base, and the bottom end is fixedly connected to the anchor connection base.

9. A sea current measuring device, characterized in that: It includes a sea current sensor and a sea current sensor fixing device as described in any one of claims 1-8.

10. An ocean current observation platform, characterized in that: It includes a floating platform and a sea current measurement device as described in claim 9.