Modular replaceable buoy chain assembly and method of operation thereof

Abstract

The application discloses a branch connector assembly, aiming to provide a modular replaceable buoy chain assembly and an operating method thereof, and technical scheme points are as follows: a bearing unit is woven by aramid fiber with high tensile strength, and the diameter-to-cable diameter ratio ranges from 1:1.5 to 1:2.2; a distributed cable clamp system includes a plurality of cable clamps arranged at a preset interval along the length direction of the bearing unit; a short branch assembly includes a main cable, a connecting part arranged at one end of the main cable and capable of being connected with a cabin interface, and a butt joint arranged at the other end of the main cable and capable of being connected with a long branch assembly; the long branch assembly includes a secondary cable and a butt interface arranged at one end of the secondary cable and capable of being connected with the butt joint; and a fixing unit includes an anti-unhooking ring arranged at the end of the bearing unit and used for being fixed at a specified position outside the cabin, and the application is suitable for the underwater transmission technical field.

Description

Technical Field

[0001] This invention relates to a branch connector assembly, and more specifically, to a modular replaceable buoy chain assembly and its operating method. Background Technology

[0002] In deep-sea environments, underwater transmission components, especially branch connector assemblies, face complex mechanical stress challenges. Traditionally, vertically deployed branch connectors on the seabed typically rely on buoyancy devices with fixed structures to offset some of the gravity effects, thereby reducing tensile loads on the cables and connector bodies. However, with increasing depth and scale of marine development, traditional non-modular buoyancy solutions are gradually revealing some limitations:

[0003] Mechanical stress concentration: Traditional buoyancy units are difficult to adjust once installed, which may lead to local stress concentration during long-term service, thus affecting the structural integrity and service life of the entire system.

[0004] Inconvenient maintenance: Since the buoyancy unit is closely integrated with the main structure, replacement or repair often involves complex disassembly and assembly procedures, which not only increases the difficulty and cost of operation, but may also cause additional risks due to improper operation.

[0005] Poor adaptability: When faced with different marine environmental conditions and different mission requirements, traditional fixed buoyancy solutions lack flexibility and cannot quickly respond to changes in actual working conditions. Summary of the Invention

[0006] To address the shortcomings of existing technologies, the present invention aims to provide a modular replaceable buoy chain assembly and its operation method.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a modular replaceable buoy chain assembly, comprising:

[0008] The load-bearing unit is woven from high tensile strength aramid fibers, and its diameter to cable diameter ratio ranges from 1:1.5 to 1:2.2.

[0009] A distributed cable clamp system includes several cable clamps arranged at preset intervals along the length of the load-bearing unit;

[0010] The short branch assembly includes a main cable, a connector located at one end of the main cable and capable of docking with the cabin interface, and a butt joint located at the other end of the main cable and capable of docking with the long branch assembly.

[0011] The long branch assembly includes a secondary cable and a connector located at one end of the secondary cable that can be connected to a connector.

[0012] The fixing unit includes an anti-detachment hook ring located at the end of the load-bearing unit and used to fix it to a designated position on the outside of the cabin.

[0013] The present invention is further configured such that: the surface of the load-bearing unit is coated with a polyurethane protective layer with a thickness of 0.2-0.5mm, the weight of which does not exceed 8% of the total weight of the load-bearing unit.

[0014] The present invention is further configured such that the docking structure formed after the docking interface and the docking head are connected includes a self-aligning conical surface structure, wherein the taper angle α satisfies tanα=0.15-0.25.

[0015] The present invention is further configured such that the flexible interface of the connecting part has a bending radius ratio of ≥12 to the diameter of the main cable.

[0016] The present invention is further configured such that the anti-detachment hook ring is provided with a double locking mechanism, the ratio of its unlocking force to working load being 1.5:1-2:1.

[0017] A method for operating a modular replaceable buoy chain assembly, characterized by comprising the following steps:

[0018] S1. Pre-assembly and testing stage:

[0019] Prepare the necessary components and equipment, and measure the initial tensile strength F0 of the load-bearing unit using a tension tester; if F0 < preset threshold Fmin × 1.15, trigger an alarm and stop the installation, and the operator needs to select a qualified load-bearing unit for installation again; if F0 ≥ preset threshold Fmin × 1.15, then proceed to S2;

[0020] S2. Cable clamp positioning and installation:

[0021] Use a laser rangefinder to calibrate the installation spacing, with an allowable deviation of ≤±2%. Fit one side hole of the cable clamp tightly with the long branch assembly and secure it with an Allen screw on that side to ensure there is no looseness. Then, pass the load-bearing unit through the other side hole of the cable clamp to the designated position and secure it again with an Allen screw on that side to ensure that the cable clamp does not wobble or slip on the load-bearing unit.

[0022] S3. Installation of the load-bearing unit:

[0023] After all cable clamps are installed, fix the anti-detachment hook ring at the end of the load-bearing unit to the designated position on the outside of the hull to ensure a secure and reliable connection and prevent accidental detachment during underwater operations.

[0024] S4. Connecting short branch components:

[0025] Connect the short branch assembly to the cabin interface and secure it, ensuring that the connection is tight and correct.

[0026] S5, Long branch component water immersion installation:

[0027] After the short branch assembly is installed, wait for most of the cables of the long branch assembly to sink underwater, then quickly and accurately connect the connectors of the short branch assembly and the connectors of the long branch assembly. After confirming that the connection is complete, slowly lower the entire structure into the predetermined underwater position to ensure that the mechanical connection and sealing performance between the components are maintained.

[0028] S6. Overall System Stability Test:

[0029] Apply multi-band vibration excitation and collect response spectra; compare with the reference vibration mode, and mark the state requiring maintenance when the natural frequency deviation is >5% so as to notify the operator.

[0030] The present invention is further configured such that: a distributed optical fiber sensor array is also provided in the load-bearing unit for real-time monitoring of strain distribution and generation of load distribution cloud map; if the local strain exceeds the threshold A = 0.8(F0 / E), an early warning is triggered to notify the operator, where E is the elastic modulus of the load-bearing unit.

[0031] The present invention is further configured such that the water immersion installation of the S5 long branch assembly also includes the following determination process:

[0032] S51. Dynamic monitoring of the docking process:

[0033] A three-stage contact force determination method is adopted:

[0034] S51.1 Initial Contact Stage: Detect the axial pressure M, and M satisfies M∈[0.8M0,1.2M0], otherwise stop docking, and the operator shall check and make corresponding adjustments; where M0 is the preset standard pressure threshold.

[0035] S51.2 Conical meshing stage: Compare the vibration spectrum energy distribution E(f) with the reference template, and satisfy the main frequency band energy difference ≤15%;

[0036] S51.3 Full Lock-up Stage: Verify the strain gauge reading Δε of the double locking mechanism when... The system will forcibly interrupt operations for personnel to inspect until no problems are found, then switch to S51.1 for re-connection; where ε0 is the preset standard strain threshold.

[0037] S52, Rear Sealing Verification:

[0038] S52.1 Establishing a pressure decay test:

[0039] Inject 2.5 times the working pressure and maintain Δt = 180s, while recording the slope K of the pressure drop curve. If K > K0 + 0.02K0, then switch to S52.2 to activate the emergency sealing procedure; where K0 is the critical slope threshold.

[0040] S52.2 Sealing Compensation Agreement:

[0041] Try them one by one:

[0042] Double locking cycle;

[0043] Inject spare sealant;

[0044] The system triggers an early warning to alert operators.

[0045] The beneficial effects of this invention are:

[0046] 1. Compared to existing technologies, the modular replaceable buoy chain assembly of this invention, by using aramid fiber as the load-bearing unit material, provides very high tensile strength, enabling the entire assembly to maintain strong durability and stability even in complex underwater environments. Furthermore, the design using a distributed cable clamp system and short and long branch components allows for flexible adaptation to different underwater application scenarios. This modular design not only facilitates replacement and maintenance but also reduces the overall system weight, improves construction efficiency, and lowers costs. In underwater operations, the reliability and ease of operation of the assembly will significantly improve work efficiency and reduce the risk of human error.

[0047] 2. The modular replaceable buoy chain assembly of the present invention effectively increases the wear resistance and corrosion resistance of the load-bearing unit by coating the surface of the load-bearing unit with a polyurethane protective layer, making it particularly suitable for applications that are exposed to harsh underwater environments for a long time. The reasonable design of the coating thickness ensures the protective effect without adding too much weight, which is crucial for maintaining the buoyancy and stability of the entire assembly. The design of the protective layer can also extend the service life of the assembly and reduce the frequency of replacement due to corrosion and wear.

[0048] 3. In this invention, the self-aligning conical structure formed after the interface and connector are connected not only simplifies the installation process but also enhances the stability of the connection. Through precise control of the taper angle, the self-alignment function during the docking process can be ensured, effectively reducing connection instability caused by human docking errors. This design greatly improves the accuracy and efficiency of equipment installation and reduces losses and delays caused by installation errors.

[0049] 4. The present invention has a simple and reasonable structure, is easy to manufacture and operate, avoids the defects of the prior art, and is suitable for promotion and application. Attached Figure Description

[0050] Figure 1This is a structural diagram of the modular replaceable buoy chain assembly of the present invention.

[0051] Figure 2 This is a structural diagram of the cable clamp in the modular replaceable buoy chain assembly of the present invention.

[0052] Figure 1-2 Reference numerals: 1. Load-bearing unit; 2. Cable clamp; 3. Short branch assembly; 4. Connector; 5. Long branch assembly; 6. Connector; 7. Anti-detachment ring. Detailed Implementation

[0053] Reference Figure 1-2 The embodiments of the modular replaceable buoy chain assembly and its operation method of the present invention are further described below.

[0054] For ease of explanation, spatial relative terms such as “up,” “down,” “left,” and “right” are used in the embodiments to describe the relationship of one element or feature shown in the figures relative to another element or feature. It should be understood that, in addition to the orientations shown in the figures, spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the figures is inverted, an element described as being “down” of other elements or features would be positioned “up” of those other elements or features. Therefore, the exemplary term “down” can encompass both up and down orientations. The device may be positioned in other ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0055] Moreover, relational terms such as “first” and “second” are used merely to distinguish one component from another that has the same name, without necessarily requiring or implying any such actual relationship or order between the components.

[0056] Figures 1 to 2 The modular replaceable buoy chain assembly shown includes:

[0057] The load-bearing unit 1 is woven from high tensile strength aramid fibers, and its diameter to cable diameter ratio ranges from 1:1.5 to 1:2.2.

[0058] The distributed cable clamp 2 system includes a plurality of cable clamps 2 arranged at a preset interval along the length of the load-bearing unit 1; each cable clamp 2 is composed of two fasteners combined and fixed by hexagonal screws, and the cable clamp 2 has two holes for fixing the load-bearing unit 1 and the long branch assembly 5, respectively.

[0059] The short branch assembly 3 includes a main cable, a connector located at one end of the main cable and capable of docking with the cabin interface, and a connector 4 located at the other end of the main cable and capable of docking with the long branch assembly 5.

[0060] The long branch assembly 5 includes a secondary cable and a mating interface 6 located at one end of the secondary cable and capable of being connected to the mating connector 4.

[0061] The fixing unit includes an anti-detachment hook 7 disposed at the end of the load-bearing unit 1 and used to fix it at a designated position on the outside of the cabin;

[0062] This modular buoy chain assembly utilizes aramid fiber as the load-bearing unit 1 material, providing extremely high tensile strength and ensuring the entire assembly maintains strong durability and stability even in complex underwater environments. Furthermore, the use of a distributed cable clamp system 2 and short and long branch components allows for flexible adaptation to various underwater application scenarios. This modular design not only facilitates replacement and maintenance but also reduces the overall system weight, improves construction efficiency, and lowers costs. During underwater operations, the assembly's reliability and ease of operation significantly improve work efficiency and reduce the risk of human error.

[0063] The surface of the load-bearing unit 1 is coated with a polyurethane protective layer with a thickness of 0.2-0.5mm, and its weight accounts for no more than 8% of the total weight of the load-bearing unit 1.

[0064] The polyurethane protective layer coated on the surface of the load-bearing unit 1 can effectively increase the wear resistance and corrosion resistance of the load-bearing unit 1, making it particularly suitable for applications that are exposed to harsh underwater environments for a long time. The reasonable design of the coating thickness ensures the protective effect without adding too much weight, which is crucial for maintaining the buoyancy and stability of the entire component. The design of the protective layer can also extend the service life of the component and reduce the frequency of replacement due to corrosion and wear.

[0065] The docking structure formed after the connection of the interface 6 and the connector 4 includes a self-aligning conical surface structure, whose taper angle α satisfies tanα=0.15-0.25;

[0066] The self-aligning conical structure formed after the connection of interface 6 and connector 4 not only simplifies the installation process but also enhances the stability of the connection. Through precise control of the taper angle, the self-alignment function during the docking process can be ensured, effectively reducing connection instability caused by human docking errors. This design greatly improves the accuracy and efficiency of equipment installation and reduces losses and delays caused by installation errors.

[0067] The flexible interface of the connection part has a bending radius ratio of ≥12 to the diameter of the main cable;

[0068] The ratio of the bending radius of the flexible interface to the diameter of the main cable is greater than or equal to 12. This design can effectively reduce the risk of damage caused by frequent bending at the interface and extend the service life of the cable. When the ratio is less than 12, the internal conductors of the cable are prone to plastic deformation under repeated bending, resulting in impedance mutation. Therefore, a ratio of ≥12 is selected. The bending performance of the flexible interface ensures that the cable can adapt to various stress conditions in complex underwater environments, avoiding cable breakage or poor contact, thereby improving the reliability of the system.

[0069] The anti-detachment hook ring 7 is equipped with a double locking mechanism, and the ratio of its unlocking force to working load is 1.5:1-2:1;

[0070] The dual locking mechanism of the anti-detachment hook 7 enhances system safety, ensuring that the connection will not loosen due to external impact or accidents under extreme working conditions. When the ratio is <1.5, accidental impact can easily trigger unlocking; when the ratio is >2.0, emergency disassembly requires excessive manual operation. Therefore, through precise design of the locking force and working load ratio, the anti-detachment hook 7 can be guaranteed to work effectively even under heavy loads, ensuring that the equipment can maintain a stable connection during long-term use and reducing potential safety risks.

[0071] A method for operating a modular replaceable buoy chain assembly, characterized by comprising the following steps:

[0072] S1. Pre-assembly and testing stage:

[0073] Prepare the necessary components and equipment, and measure the initial tensile strength F0 of the load-bearing unit 1 using a tension tester; if F0 < preset threshold Fmin × 1.15, trigger an alarm and stop the installation, and the operator needs to select a qualified load-bearing unit 1 again for installation; if F0 ≥ preset threshold Fmin × 1.15, then proceed to S2.

[0074] S2, Cable clamp 2 positioning installation:

[0075] Use a laser rangefinder to calibrate the installation spacing, with an allowable deviation of ≤±2%. Fit one side hole of the cable clamp 2 tightly with the long branch assembly 5 and fix it with an Allen screw on that side to ensure there is no looseness. Then, pass the load-bearing unit 1 through the other side hole of the cable clamp 2 to the designated position and fix it again with an Allen screw on that side to ensure that the cable clamp 2 will not wobble or slip on the load-bearing unit 1.

[0076] S3. Installation of load-bearing unit 1:

[0077] After all cable clamps 2 are installed, the anti-detachment hook ring 7 at the end of the load-bearing unit 1 is fixed to the designated position outside the cabin to ensure a stable and reliable connection and prevent accidental detachment during underwater operations.

[0078] S4, Connection of short branch component 3:

[0079] Connect the connecting part of the short branch assembly 3 to the cabin interface and fix it in place, ensuring that the connection is tight and correct.

[0080] S5, Long Branch Component 5-Inlet Water Installation:

[0081] After the short branch assembly 3 is installed, wait for most of the cable of the long branch assembly 5 to sink underwater, and then quickly and accurately connect the connector 4 of the short branch assembly 3 and the connector 6 of the long branch assembly 5 together; after confirming that the connection is complete, slowly lower the whole structure into the predetermined underwater position to ensure that the components maintain good mechanical connection and sealing performance.

[0082] S6. Overall System Stability Test:

[0083] Apply multi-band vibration excitation and acquire response spectra; compare with reference vibration modes, and mark the state requiring maintenance when the natural frequency deviation is >5% so as to notify the operator;

[0084] The pre-installation testing phase in the operation method uses tension testing and real-time monitoring of the tensile strength of the load-bearing unit 1 to promptly identify potential component problems in the early stages of installation, avoiding subsequent failures caused by substandard component quality. This effective screening ensures that only qualified components are allowed to enter the installation process, greatly improving the overall reliability of the system. In addition, the precise positioning of the cable clamp 2, the installation of the load-bearing unit 1, and the docking process of the branch components ensure the stability of the entire system after installation and its reliability during long-term operation.

[0085] The load-bearing unit 1 is also equipped with a distributed fiber optic sensor array, which is used to monitor the strain distribution in real time and generate a load distribution cloud map. If the local strain exceeds the threshold A = 0.8 (F0 / E), an early warning is triggered to notify the operator, where E is the elastic modulus of the load-bearing unit 1.

[0086] By setting up a fiber optic sensor array in the load-bearing unit 1 for real-time monitoring, the internal strain distribution can be accurately sensed and a load distribution cloud map can be generated. This real-time monitoring mechanism enables operators to promptly detect potential structural risks, especially under excessive load conditions, triggering warnings and responding accordingly, thereby avoiding failures or accidents caused by overload. This can greatly improve safety and real-time response capabilities.

[0087] The water inlet installation of the S5 long branch assembly 5 also includes the following determination process:

[0088] S51. Dynamic monitoring of the docking process:

[0089] A three-stage contact force determination method is adopted:

[0090] S51.1 Initial Contact Stage: Detect the axial pressure M, and M satisfies M∈[0.8M0,1.2M0], otherwise stop docking, and the operator shall check and make corresponding adjustments; where M0 is the preset standard pressure threshold.

[0091] S51.2 Conical meshing stage: Compare the vibration spectrum energy distribution E(f) with the reference template, and satisfy the main frequency band energy difference ≤15%;

[0092] S51.3 Full Lock-up Stage: Verify the strain gauge reading Δε of the double locking mechanism when... The system will forcibly interrupt operations for personnel to inspect until no problems are found, then switch to S51.1 for re-connection; where ε0 is the preset standard strain threshold.

[0093] S52, Rear Sealing Verification:

[0094] S52.1 Establishing a pressure decay test:

[0095] Inject 2.5 times the working pressure and maintain Δt = 180s, while recording the slope K of the pressure drop curve. If K > K0 + 0.02K0, then switch to S52.2 to activate the emergency sealing procedure; where K0 is the critical slope threshold.

[0096] S52.2 Sealing Compensation Agreement:

[0097] Try them one by one:

[0098] Double locking cycle;

[0099] Inject spare sealant;

[0100] Trigger an early warning to alert operators;

[0101] The system ensures the installation accuracy and water tightness of the components; the three-stage contact force determination, vibration spectrum comparison, and real-time feedback of strain gauges effectively ensure that every detail in the connection process meets the standards and avoids subsequent problems caused by incomplete docking; in addition, the pressure decay test and emergency sealing procedure further enhance the system's adaptability in complex environments and ensure that the system can maintain its integrity and sealing during long-term use.

[0102] By using high-strength aramid rope as the main load-bearing unit 1 and installing cable clamps 2 at equal intervals on the cable, the mechanical stress of the dynamic load of seawater on the cable is effectively dispersed. This dense and uniform layout of fixing points avoids the occurrence of local stress concentration, thereby significantly reducing the risk of failure due to fatigue damage. At the same time, the connection process is decomposed into two independent but complementary parts: long branch assembly 5 and short branch assembly 3, making on-site installation and maintenance simpler and faster. The compact and easy-to-disassemble short branch assembly 3 ensures high efficiency and accuracy in the connection process, reducing operational difficulty and cost. The customized cable clamp 2 and modular design allow for quick replacement of damaged or maintenance-required parts without complex disassembly and reassembly, further improving the maintainability of the system. In other words, by using this modular replaceable buoy chain assembly, not only can the service life of the seabed vertical deployment branch connector system be significantly extended, but its operational convenience and mechanical performance can also be greatly improved, ensuring long-term stable operation of the system in complex marine environments, with high reliability and economy.

[0103] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any ordinary changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for operating a modular replaceable buoy chain assembly, characterized in that: include: The load-bearing unit (1) is woven from high tensile strength aramid fibers, and the ratio of its diameter to the cable diameter is 1:1.5-1:2.

2. A distributed cable clamp (2) system includes a number of cable clamps (2) arranged at preset intervals along the length of the load-bearing unit (1); The short branch assembly (3) includes a main cable, a connector located at one end of the main cable and capable of docking with the cabin interface, and a connector (4) located at the other end of the main cable and capable of docking with the long branch assembly (5). The long branch assembly (5) includes a secondary cable and a connector (6) located at one end of the secondary cable and capable of connecting to the connector (4); The fixing unit includes an anti-detachment hook ring (7) disposed at the end of the load-bearing unit (1) and used to fix it at a designated position outside the cabin; Its operation method includes the following steps: S1. Pre-assembly and testing stage: Prepare the necessary components and equipment, and measure the initial tensile strength F0 of the load-bearing unit (1) using a tension tester; If F0 < preset threshold Fmin × 1.15, an alarm will be triggered and installation will be stopped. The operator will need to select a qualified load-bearing unit (1) for installation again. If F0 ≥ preset threshold Fmin × 1.15, then proceed to S2. S2, Cable clamp (2) positioning and installation: Use a laser rangefinder to calibrate the installation spacing, with an allowable deviation of ≤±2%; fit one side hole of the cable clamp (2) tightly with the long branch assembly (5), and fix it with an internal hex screw on the same side to ensure that there is no looseness. Then pass the load-bearing unit (1) through the other side hole of the cable clamp (2) to the designated position, and fix it again with an internal hex screw on the same side to ensure that the cable clamp (2) will not shake up and down or slip on the load-bearing unit (1); S3. Installation of load-bearing unit (1): After all cable clamps (2) are installed, the anti-detachment hook ring (7) at the end of the load-bearing unit (1) is fixed in the designated position outside the cabin to ensure a stable and reliable connection and prevent accidental detachment during underwater operations. S4. Connection of short branch component (3): Connect the connecting part of the short branch assembly (3) to the cabin interface and fix it to ensure that the connection is tight and correct; S5, Long branch assembly (5) water inlet installation: After the short branch assembly (3) is installed, wait for most of the cable of the long branch assembly (5) to sink underwater, and then quickly and accurately connect the connector (4) of the short branch assembly (3) and the connector (6) of the long branch assembly (5); after confirming that the connection is completed, slowly lower the whole structure into the predetermined underwater position to ensure that the components maintain good mechanical connection and sealing performance. S6. Overall System Stability Test: Apply multi-band vibration excitation and collect response spectra; compare with the reference vibration mode, and mark the state requiring maintenance when the natural frequency deviation is >5% so as to notify the operator.

2. The operating method of a modular replaceable buoy chain assembly according to claim 1, characterized in that, The surface of the load-bearing unit (1) is coated with a polyurethane protective layer with a thickness of 0.2-0.5mm, and its weight accounts for no more than 8% of the total weight of the load-bearing unit (1).

3. The operating method of a modular replaceable buoy chain assembly according to claim 1, characterized in that, The docking structure formed after the docking interface (6) and the docking head (4) are connected includes a self-aligned conical surface structure, whose taper angle α satisfies tanα=0.15-0.

25.

4. The operating method of a modular replaceable buoy chain assembly according to claim 1, characterized in that, The flexible interface of the connection part has a bending radius ratio of ≥12 to the diameter of the main cable.

5. The operating method of a modular replaceable buoy chain assembly according to claim 1, characterized in that, The anti-detachment hook ring (7) is equipped with a double locking mechanism, and the ratio of its unlocking force to working load is 1.5:1-2:

1.

6. The operating method of a modular replaceable buoy chain assembly according to claim 1, characterized in that, The load-bearing unit (1) is also equipped with a distributed optical fiber sensor array, which is used to monitor the strain distribution in real time and generate a load distribution cloud map. If the local strain exceeds the threshold A=0.8 (F0 / E), an early warning is triggered to notify the operator, where E is the elastic modulus of the load-bearing unit (1).

7. The operating method of a modular replaceable buoy chain assembly according to claim 1, characterized in that, The water immersion installation of the S5 long branch assembly (5) also includes the following determination process: S51. Dynamic monitoring of the docking process: A three-stage contact force determination method is adopted: S51.1 Initial Contact Stage: Detect the axial pressure M, and M satisfies M∈[0.8M0,1.2M0], otherwise stop docking, and the operator shall check and make corresponding adjustments; where M0 is the preset standard pressure threshold. S51.2 Conical meshing stage: Compare the vibration spectrum energy distribution E(f) with the reference template, and ensure that the energy difference in the main frequency band is ≤15%; S51.3 Full Lock-up Stage: Verify the strain gauge reading Δε of the double locking mechanism when Δε / ε0 At [0.9,1.1], the operator is forced to stop and inspect the equipment until there are no problems, then proceed to S51.1 to reconnect; where ε0 is the preset standard strain threshold. S52, Rear Sealing Verification: S52.1 Establishing a pressure decay test: Inject 2.5 times the working pressure and maintain Δt=180s, while recording the slope K of the pressure drop curve. If K>K0+0.02K0, then switch to S52.2 to activate the emergency sealing procedure; where K0 is the critical slope threshold. S52.2 Sealing Compensation Agreement: Try them one by one: Double locking cycle; Inject spare sealant; trigger an early warning to alert operators.

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