Sea surface monitoring buoy device for nuclear power plant

Abstract

The utility model provides a nuclear power plant sea surface monitoring buoy device which comprises a floating body and an anchoring mechanism, the anchoring mechanism is connected to the bottom of the floating body, the anchoring mechanism comprises an anchor chain, an anchor point and a three-level buffering module, the two ends of the anchor chain are connected to the floating body and the anchor point respectively, and the three-level buffering module is connected to the floating body. The three-stage buffering modules are sequentially arranged in the extending direction of the anchor chain from the floating body to the anchor point. The technical problem that an anchor chain of a traditional buoy device is broken due to the fact that the anchor chain cannot bear multi-dimensional impact loads due to stress concentration is solved.

Description

Technical Field

[0001] This utility model relates to the field of nuclear power plant detection technology, and more specifically to a nuclear power plant sea surface monitoring buoy device. Background Technology

[0002] Monitoring buoys in coastal waters near nuclear power plants are critical equipment for ensuring the safe operation of nuclear facilities, requiring long-term, stable data collection of water temperature, radiation intensity, ocean currents, and other data. Traditional buoy devices typically employ a fixed anchoring structure with the buoy directly connected to an anchor chain, improving shock resistance by increasing the length of the anchor chain or adding weight. However, this design has significant drawbacks in complex marine environments: First, the instantaneous impacts from typhoons, strong ocean currents, or ship collisions can easily cause localized stress concentration in the anchor chain, leading to breakage or plastic deformation, causing the buoy to drift or even be lost. Second, conventional single-buffer structures, such as springs or rubber dampers, are mostly unidirectional and cannot cope with multi-dimensional composite loads. Especially in deep waters where there is a difference in tidal and surface current directions, the anchor chain is prone to asymmetrical oscillation, accelerating the fatigue failure of the buffer components. Therefore, there is an urgent need to develop a buoy device with graded buffering capabilities that can adapt to multi-directional dynamic loads to improve the reliability and data stability of the buoy. Utility Model Content

[0003] The purpose of this invention is to overcome the defects of the prior art and provide a nuclear power plant sea surface monitoring buoy device. Its purpose is to solve the technical problem that the anchor chain of the traditional buoy device cannot withstand multidimensional impact loads due to stress concentration.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A nuclear power plant sea surface monitoring buoy device includes a buoy body and an anchoring mechanism. The anchoring mechanism is connected to the bottom of the buoy body and includes an anchor chain, anchor points, and a three-stage buffer module. The two ends of the anchor chain are respectively connected to the buoy body and the anchor points. The three-stage buffer module is arranged sequentially along the extension direction of the anchor chain from the buoy body to the anchor points.

[0006] In one embodiment, the three-stage buffer module includes a first buffer module, a second buffer module, and a third buffer module; the first buffer module is located at the bottom of the float and connected to one end of the anchor chain, the second buffer module is located in the middle section of the anchor chain and is arranged parallel to the anchor chain, and the third buffer module is located at the other end of the anchor chain and connected to the anchor point.

[0007] In one embodiment, the first buffer module includes a first buffer plate, a spring assembly, and a second buffer plate. The first buffer plate is fixedly connected to the bottom of the float, the spring assembly is distributed in a circular array on the first buffer plate, and the end of the spring assembly is fixedly connected to the second buffer plate. The first buffer plate and the second buffer plate are arranged in parallel.

[0008] In one embodiment, the second buffer plate has a spherical hinge seat at one end away from the first buffer plate, and one end of the anchor chain is fixedly connected to the spherical hinge seat.

[0009] In one embodiment, the second buffer module is located at one-third of the distance between the anchor chain and the buoy and the anchor point.

[0010] In one embodiment, the second buffer module includes a shackle assembly and a hydraulic damper, the hydraulic damper being disposed between the shackle assemblies and perpendicular to the axis of the anchor chain.

[0011] In one embodiment, the shackle assembly includes a first buckle and a second buckle, both of which are hooked onto the anchor chain; a first connecting plate is welded to the ends of the first buckle and the second buckle; one end of the hydraulic damper is connected to the first connecting plate, and the other end is fixedly connected to the second connecting plate; the first connecting plate and the second connecting plate are arranged opposite to each other.

[0012] In one embodiment, the third buffer module includes a locking sleeve and an energy-absorbing plate. The locking sleeve is formed by a cylindrical side wall and a bottom wall. The inner wall of the cylindrical side wall is interference-fitted with the outer wall of the energy-absorbing plate. The bottom wall is provided with a fixing buckle on the side near the anchor chain. The fixing buckle is fixedly connected to the end of the anchor chain so that the energy-absorbing plate is sleeved on the outside of the anchor chain. The side of the bottom wall near the anchor point is connected to the anchor point.

[0013] In one embodiment, the outer wall of the anchor point is provided with a base, and the locking sleeve is detachably connected to the base.

[0014] In one embodiment, the energy-absorbing plate is a composite structure, consisting of an elastic protective layer, an energy-absorbing honeycomb layer, and an anti-corrosion layer from the inside out.

[0015] The advantages of this invention compared to existing technologies are: by distributing three-stage buffer modules sequentially along the anchor chain from the float to the anchor point, a progressive energy dissipation path is formed. When the float is impacted by sea waves, ocean currents, or ship collisions, the impact force is gradually attenuated through the three-stage modules, avoiding localized stress concentration in the anchor chain caused by traditional single-point buffering and reducing the risk of anchor chain breakage.

[0016] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model, it can be implemented according to the contents of the specification. In order to make the above and other objects, features and advantages of this utility model more obvious and easy to understand, the following are preferred embodiments, which are described in detail below. Attached Figure Description

[0017] Figure 1 A schematic diagram of the overall structure of a nuclear power plant sea surface monitoring buoy device provided by this utility model;

[0018] Figure 2 for Figure 1 A magnified view of part A in the diagram;

[0019] Figure 3 A plan view of the locking sleeve of a nuclear power plant sea surface monitoring buoy device provided by this utility model.

[0020] Figure Labels

[0021] 1. Float; 2. Anchor chain; 3. Anchor point; 31. Base; 4. First buffer module; 41. First buffer plate; 42. Spring assembly; 43. Second buffer plate; 44. Spherical hinge seat; 5. Second buffer module; 51. Shackle assembly; 511. First buckle; 512. Second buckle; 513. First connecting plate; 514. Second connecting plate; 52. Hydraulic damper; 6. Third buffer module; 61. Locking sleeve; 611. Cylindrical sidewall; 612. Bottom wall; 613. Fixed lock; 62. Energy-absorbing plate. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0024] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0025] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0026] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0027] See Figures 1 to 3 As shown in the figure, this utility model embodiment discloses a nuclear power plant sea surface monitoring buoy device, including a float 1 and an anchoring mechanism. The anchoring mechanism is connected to the bottom of the float 1. The anchoring mechanism includes an anchor chain 2, an anchor point 3 and a three-stage buffer module. The two ends of the anchor chain 2 are respectively connected to the float 1 and the anchor point 3. The three-stage buffer module is arranged sequentially along the extension direction of the anchor chain 2 from the float 1 to the anchor point 3.

[0028] Specifically, this embodiment provides a nuclear power plant sea surface monitoring buoy device. The buoy 1 is fixed to the seabed by an anchoring mechanism, which includes an anchor chain 2, anchor points 3, and three-stage buffer modules arranged sequentially along the extension direction of the anchor chain 2. One end of the anchor chain 2 is connected to the bottom of the buoy 1, and the other end is fixed to a seabed pile via the anchor point 3. The three-stage buffer modules are respectively arranged at the near end below the buoy 1, the middle of the anchor chain 2, and the far end near the anchor point 3. When the buoy 1 is impacted by waves, ocean currents, or ship collisions, the axial distribution of the three-stage buffer modules on the anchor chain 2 allows the three-stage buffer modules to respectively withstand the high-frequency wave energy of the surface water, the combined load generated by the mid-level water flow, and the low-frequency high-energy vibrations brought by deep-sea swells or tides. The impact energy is attenuated in stages, avoiding stress concentration at a single location that could lead to anchor chain 2 breakage.

[0029] In one embodiment, the three-stage buffer module includes a first buffer module 4, a second buffer module 5, and a third buffer module 6; the first buffer module 4 is located at the bottom of the float 1 and connected to one end of the anchor chain 2, the second buffer module 5 is located in the middle section of the anchor chain 2 and is arranged parallel to the anchor chain 2, and the third buffer module 6 is located at the other end of the anchor chain 2 and connected to the anchor point 3.

[0030] Specifically, the first buffer module 4 is installed at the bottom of the float 1 and directly connected to one end of the anchor chain 2; the second buffer module 5 is fixed to the middle section of the anchor chain 2 and arranged parallel to the anchor chain 2; and the third buffer module 6 is integrated into the other end of the anchor chain 2 and connected to the anchor point 3. When the float 1 is subjected to external impact, the first buffer module 4 first bears the instantaneous load transmitted by the float 1, such as when waves crash or ships collide, and absorbs surface high-frequency vibrations through its rigid connection with the float 1; the second buffer module 5 constrains the lateral swing and pressure of the anchor chain 2 at the middle section, reducing the stress peak in the middle of the anchor chain 2; and the third buffer module 6 dissipates low-frequency high-energy impacts from tides or bottom swells in the deep-sea area near the anchor point 3, preventing the connection structure at the anchor point 3 from loosening due to long-term stress. By arranging buffer modules at the beginning, middle, and end of anchor chain 2, a tiered energy dissipation path is formed from float 1 to the seabed. This allows impact forces of varying intensities, directions, and frequencies to be processed in segments, effectively reducing the risk of anchor chain 2 fracture due to localized stress concentration. Simultaneously, it suppresses the overall sway amplitude of anchor chain 2, reduces displacement deviation of float 1, and ensures the relative stability of the monitoring sensors on float 1 with the target water area. Furthermore, the segmented and independent layout of the three-stage modules avoids cascading damage caused by the overload failure of a single buffer unit, significantly extending the overall service life of anchor chain 2 and the anchoring mechanism.

[0031] In one embodiment, the first buffer module 4 includes a first buffer plate 41, a spring assembly 42, and a second buffer plate 43. The first buffer plate 41 is fixedly connected to the bottom of the float 1. The spring assembly 42 is arranged in a ring array on the first buffer plate 41. The end of the spring assembly 42 is fixedly connected to the second buffer plate 43. The first buffer plate 41 and the second buffer plate 43 are arranged in parallel.

[0032] Specifically, the first buffer module 4 consists of a first buffer plate 41, a spring assembly 42, and a second buffer plate 43. The first buffer plate 41 is fixed to the bottom of the float 1 by welding or bolting, and the second buffer plate 43 is connected to the near end of the anchor chain 2. The spring assembly 42 is evenly distributed on the surface of the first buffer plate 41 in a ring array, with its two ends rigidly connected to the first buffer plate 41 and the second buffer plate 43 respectively, ensuring that the first buffer plate 41 and the second buffer plate 43 are arranged in parallel at intervals. When the float 1 is subjected to vertical or tilting impacts from waves or ship collisions, the first buffer plate 41 transfers the load to the ring-distributed spring assembly 42. The axial compression and radial deformation of the springs disperse the impact force, preventing stress concentration at a single connection point between the anchor chain 2 and the float 1. The parallel arrangement of the first buffer plate 41 and the second buffer plate 43 limits the asymmetric deformation of the spring assembly 42, ensuring that the impact energy is transmitted axially along the anchor chain 2 to the downstream buffer module, while simultaneously suppressing the tilting of the float 1 caused by uneven local stress. This design enables the first buffer module 4 to reduce the peak load through the distributed elastic deformation of the spring assembly 42 when subjected to high-frequency impacts, thereby reducing fatigue damage at the connection between the float 1 and the anchor chain 2, extending the overall life of the anchor chain 2 and maintaining the stability of the float 1's attitude.

[0033] In one embodiment, the second buffer plate 43 is provided with a spherical hinge seat 44 at one end away from the first buffer plate 41, and one end of the anchor chain 2 is fixedly connected to the spherical hinge seat 44.

[0034] Specifically, the spherical structure of the spherical hinge 44 allows the anchor chain 2 to rotate freely within a certain angle range. When the float 1 is impacted by waves or ocean currents from different directions, the anchor chain 2 can adaptively adjust the direction of force through the rotation of the spherical hinge 44, avoiding stress concentration at the connection between the anchor chain 2 and the second buffer plate 43 due to excessive load in one direction. At the same time, the rotational freedom of the spherical hinge 44 can alleviate the rigid constraint between the float 1 and the anchor chain 2, allowing the spring assembly 42 of the first buffer module 4 to transmit impact energy to the anchor chain 2 more evenly, reducing the asymmetric deformation of the spring assembly 42 caused by the tilting or swaying of the float 1. This further disperses the dynamic load at the near-end connection point of the anchor chain 2, suppresses local fatigue damage, and ensures that the anchor chain 2 always maintains a stable force transmission path with the float 1 under complex sea conditions, thereby improving the overall impact resistance and service life of the anchoring mechanism.

[0035] In one embodiment, the second buffer module 5 is located at one-third of the distance between the anchor chain 2 and the float 1 and the anchor point 3.

[0036] Specifically, the second buffer module 5 is located at one-third of the length of the anchor chain 2 between the float 1 and the anchor point 3, which is the position one-third of the total length of the anchor chain 2 near the end of the float 1. Because the surface waters are subject to high instantaneous impact frequencies from waves, ocean currents, and ship collisions, the mid-section of the anchor chain 2 needs to cope with the combined loads caused by changes in the direction of the current. When the float 1 is impacted by the surface, the first buffer module 4 preferentially absorbs high-frequency energy, and the remaining impact force is transmitted through the anchor chain 2 to the second buffer module 5 located at one-third of the length. At this point, the front section of the anchor chain 2 where the second buffer module 5 is located simultaneously bears the vertical tension from the float 1 and the lateral shear force from the mid-depth current. In other words, the second buffer module 5 forms a secondary energy dissipation node on the impact force propagation path, dispersing the dynamic stress in the front section of the anchor chain 2 and preventing overload at a single location due to continuous stress. Simultaneously, this position adapts to the changes in velocity and pressure gradient in the mid-water, enabling the second buffer module 5 to effectively suppress the asymmetric swaying of the anchor chain 2 caused by sudden changes in the direction of the current, reducing fatigue damage to the mid-section of the anchor chain 2.

[0037] In one embodiment, the second buffer module 5 includes a shackle assembly 51 and a hydraulic damper 52, wherein the hydraulic damper 52 is disposed between the shackle assemblies 51 and perpendicular to the axis of the anchor chain 2.

[0038] Specifically, the second buffer module includes a shackle assembly 51 and a hydraulic damper 52. The shackle assembly 51 consists of two symmetrical metal buckles, fixed to both sides of the middle section of the anchor chain 2. The hydraulic damper 52 is laterally positioned between the two shackle assemblies 51 and perpendicular to the axis of the anchor chain 2. When the anchor chain 2 is subjected to tension or lateral swaying due to ocean currents or waves, the load is transferred to the hydraulic damper 52, which dissipates the impact energy through its reciprocating extension and retraction. Due to the combined design of the hydraulic damper 52 and the shackle assembly 51, the second buffer module 5 can simultaneously counteract the axial tensile force and lateral shear force of the middle section of the anchor chain 2, avoiding residual stress caused by unidirectional buffering. When the anchor chain 2 sways horizontally due to surface ocean currents, the hydraulic damper 52 converts the lateral load into a compression stroke, suppressing the sway amplitude. When deep-sea swells cause vertical tension in the anchor chain 2, the hydraulic damper 52 absorbs longitudinal impact energy through the resistance of the damping fluid. In addition, the layout of the shackle assembly 51 and the hydraulic damper 52 facilitates partial replacement during offshore maintenance without disassembling the entire anchor chain 2.

[0039] In one embodiment, the shackle assembly 51 includes a first buckle 511 and a second buckle 512, both of which are hooked onto the anchor chain 2; a first connecting plate 513 is welded to the ends of the first buckle 511 and the second buckle 512, one end of the hydraulic damper 52 is connected to the first connecting plate 513, and the other end is fixedly connected to a second connecting plate 514, with the first connecting plate 513 and the second connecting plate 514 arranged opposite to each other.

[0040] Specifically, the shackle assembly 51 includes a first shackle ring 511 and a second shackle ring 512, both of which are hooked onto the middle section surface of the anchor chain 2 through a U-shaped opening structure. The ends of the first shackle ring 511 and the second shackle ring 512 are welded with a first connecting plate 513 perpendicular to the axial direction of the anchor chain 2, thereby hooking the first connecting plate 513 onto the anchor chain 2. One end of the hydraulic damper 52 is connected to the first connecting plate 513, and the other end is fixedly connected to a second connecting plate 514, with the first connecting plate 513 and the second connecting plate 514 arranged parallel to each other and spaced apart. It can be understood that both ends of the hydraulic damper 52 are respectively fixed to the corresponding mounting holes of the first connecting plate 513 and the second connecting plate 514 by bolts, forming a damping structure that laterally spans both sides of the anchor chain 2. When the anchor chain 2 is subjected to lateral swaying or axial stretching due to ocean currents or wave impacts, the load forces the hydraulic damper 52 to compress or stretch along its axial direction. The impact energy is dissipated through the throttling resistance of the hydraulic damping fluid, thereby suppressing the sway amplitude. When the anchor chain 2 is stretched vertically, the relative separation of the first connecting plate 513 and the second connecting plate 514 drives the hydraulic damper 52 to stretch and dissipate energy. In addition, the modular design of the first buckle 511 and the second buckle 512, which are hooked and bolted together, facilitates quick disassembly and maintenance of the hydraulic damper 52 on the offshore platform.

[0041] In one embodiment, the third buffer module 6 includes a locking sleeve 61 and an energy-absorbing plate 62. The locking sleeve 61 is formed by a cylindrical side wall 611 and a bottom wall 612. The inner wall of the cylindrical side wall 611 is interference-fitted with the outer wall of the energy-absorbing plate 62. The bottom wall 612 is provided with a fixing buckle 613 on the side near the anchor chain 2. The fixing buckle 613 is fixedly connected to the end of the anchor chain 2 so that the energy-absorbing plate 62 is sleeved on the outside of the anchor chain 2. The side of the bottom wall 612 near the anchor point 3 is connected to the anchor point 3.

[0042] Specifically, the locking sleeve 61 of the third buffer module 6 is formed by a cylindrical side wall 611 and a bottom wall 612, and the whole is a cylindrical structure closed at one end: the inner wall of the cylindrical side wall 611 and the outer wall of the energy-absorbing plate 62 are tightly connected by an interference fit to ensure that the energy-absorbing plate 62 does not slide relative to the locking sleeve 61; a fixing buckle 613 is provided on the side of the bottom wall 612 near the anchor chain 2, which is fixed to the end of the anchor chain 2 by welding or bolting, so that the energy-absorbing plate 62 is completely fitted outside the anchor chain 2; the other side of the bottom wall 612 is rigidly connected to the anchor point 3 by a flange or hinge mechanism. When deep-sea swells or tidal impacts are transmitted to the end of the anchor chain 2, the bottom wall 612 of the locking sleeve 61 converts the longitudinal tensile load into the radial compressive deformation of the energy-absorbing plate 62. The frictional force generated at the interference fit interface and the elastic deformation of the energy-absorbing plate 62 work together to dissipate energy. At the same time, the rigid constraint of the locking buckle 613 on the end of the anchor chain 2 can suppress the fretting wear at the connection between the anchor chain 2 and the locking sleeve 61, avoiding loosening of the connection due to long-term impact. The direct connection design between the bottom wall 612 and the anchor point 3 allows the impact energy to be stably transmitted to the seabed pile through the locking sleeve 61, reducing the low-frequency vibration amplitude at the end of the anchor chain 2 and preventing fatigue cracks in the connection structure of the anchor point 3 due to stress fluctuations.

[0043] In one embodiment, the outer wall of the anchor point 3 is provided with a base 31, and the locking sleeve 61 is detachably connected to the base 31.

[0044] Specifically, the outer wall of anchor point 3 is provided with a base 31, which is integrally formed with the outer wall of anchor point 3 through welding or casting. It is understood that the locking sleeve 61 is detachably connected to the surface of base 31 via a flange or bolt assembly. When maintenance or replacement of the third buffer module 6 is required, operators can separate the locking sleeve 61 from the base 31 by removing the flange bolts without damaging the fixed connection between anchor point 3 and the seabed pile. The presence of base 31 provides a rigid mounting plane for locking sleeve 61, ensuring the coaxiality of locking sleeve 61 and anchor point 3, and avoiding additional bending moments caused by connection eccentricity under the impact of deep-sea swells. Simultaneously, the detachable connection design allows the third buffer module 6, consisting of locking sleeve 61 and energy-absorbing plate 62, to be replaced independently, significantly reducing the complexity and time cost of maintenance operations at the end of anchor chain 2.

[0045] In one embodiment, the energy-absorbing plate 62 is a composite structure, consisting of an elastic protective layer, an energy-absorbing honeycomb layer, and an anti-corrosion layer from the inside out.

[0046] Specifically, the elastic protective layer is directly fitted onto the outer surface of the anchor chain 2. By matching its elastic modulus to the deformation characteristics of the anchor chain 2 material, it generates uniform radial compressive deformation under impact loads, dispersing localized stress concentration on the surface of the anchor chain 2. The energy-absorbing honeycomb layer consists of continuously arranged honeycomb cavities. Through the plastic folding and elastic recovery of the cavity walls, it absorbs the impact energy transmitted by the locking sleeve 61, achieving rapid dissipation of high-frequency vibration energy. The anti-corrosion layer, as the outermost covering structure, uses seawater-resistant materials to prevent seawater from penetrating into the energy-absorbing honeycomb layer, avoiding corrosion or fatigue cracking of the cavity structure due to long-term immersion. The synergistic effect of the three layers enables the energy-absorbing plate 62 to maintain stable energy absorption performance under deep-sea high pressure, salt spray corrosion, and periodic impact environments, thus eliminating the need for additional anti-corrosion coatings or stress dispersion devices.

[0047] The above examples are merely illustrative of the technical content of this utility model to facilitate reader understanding, but do not imply that the implementation of this utility model is limited to these embodiments. Any technical extensions or re-creations made based on this utility model are protected by this utility model. The scope of protection of this utility model is defined by the claims.

Claims

1. A surface monitoring buoy device for nuclear power plants, comprising a buoy body and an anchoring mechanism, wherein the anchoring mechanism is connected to the bottom of the buoy body, characterized in that, The anchoring mechanism includes an anchor chain, an anchor point, and a three-stage buffer module. The two ends of the anchor chain are respectively connected to the float and the anchor point. The three-stage buffer module is arranged sequentially along the extension direction of the anchor chain from the float to the anchor point.

2. The nuclear power plant sea surface monitoring buoy device according to claim 1, characterized in that, The three-stage buffer module includes a first buffer module, a second buffer module, and a third buffer module; the first buffer module is located at the bottom of the float and connected to one end of the anchor chain, the second buffer module is located in the middle section of the anchor chain and is arranged parallel to the anchor chain, and the third buffer module is located at the other end of the anchor chain and connected to the anchor point.

3. The nuclear power plant sea surface monitoring buoy device according to claim 2, characterized in that, The first buffer module includes a first buffer plate, a spring assembly, and a second buffer plate. The first buffer plate is fixedly connected to the bottom of the float. The spring assembly is arranged in a circular array on the first buffer plate. The end of the spring assembly is fixedly connected to the second buffer plate. The first buffer plate and the second buffer plate are arranged in parallel.

4. The nuclear power plant sea surface monitoring buoy device according to claim 3, characterized in that, The second buffer plate has a spherical hinge seat at one end away from the first buffer plate, and one end of the anchor chain is fixedly connected to the spherical hinge seat.

5. A nuclear power plant sea surface monitoring buoy device according to claim 2, characterized in that, The second buffer module is located at one-third of the distance between the anchor chain and the buoy and the anchor point.

6. A nuclear power plant sea surface monitoring buoy device according to claim 2, characterized in that, The second buffer module includes shackle assemblies and a hydraulic damper, wherein the hydraulic damper is disposed between the shackle assemblies and perpendicular to the axis of the anchor chain.

7. A nuclear power plant sea surface monitoring buoy device according to claim 6, characterized in that, The shackle assembly includes a first buckle and a second buckle, both of which are hooked onto the anchor chain. A first connecting plate is welded to the ends of the first buckle and the second buckle. One end of the hydraulic damper is connected to the first connecting plate, and the other end is fixedly connected to the second connecting plate. The first connecting plate and the second connecting plate are arranged opposite to each other.

8. A nuclear power plant sea surface monitoring buoy device according to claim 2, characterized in that, The third buffer module includes a locking sleeve and an energy-absorbing plate. The locking sleeve is formed by a cylindrical side wall and a bottom wall. The inner wall of the cylindrical side wall is interference-fitted with the outer wall of the energy-absorbing plate. The bottom wall is provided with a fixing buckle on the side near the anchor chain. The fixing buckle is fixedly connected to the end of the anchor chain so that the energy-absorbing plate is sleeved on the outside of the anchor chain. The side of the bottom wall near the anchor point is connected to the anchor point.

9. A nuclear power plant sea surface monitoring buoy device according to claim 8, characterized in that, The anchor point has a base on its outer wall, and the locking sleeve is detachably connected to the base.

10. A nuclear power plant sea surface monitoring buoy device according to claim 9, characterized in that, The energy-absorbing panel has a composite structure, consisting of an elastic protective layer, an energy-absorbing honeycomb layer, and an anti-corrosion layer from the inside out.

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