Real-time detection system and method for structural integrity under deep sea umbilical cable sea trial scene

Abstract

The application provides a kind of deep sea umbilical cable sea trial scene structural integrity real-time detection system and method, related to ocean engineering technical field, the system includes core detection module, environmental adaptive module, data fusion processing module, integrated protection installation module, the method includes: sea trial preparation: confirm umbilical cable specification and research vessel winch layout;System installation and calibration: system axis and umbilical cable deployment path alignment, installation, calibration core detection module;Sea trial deployment monitoring: real-time data analysis based on mutation threshold algorithm, scientific decision-making;Real-time data processing and storage: real-time display of outer diameter curve, store data, screen suspicious areas;Umbilical cable recovery monitoring: secondary verification umbilical cable structure state, compare deployment data to generate difference report;System removal and maintenance, analysis to generate integrity assessment report.The application can detect the outer diameter, surface defects in the process of umbilical cable sea trial deployment and recovery in real time.

Description

Technical Field

[0001] This invention relates to the field of marine engineering technology, and in particular to a real-time structural integrity detection system and method for deep-sea umbilical cable sea trials. Background Technology

[0002] Deep-sea umbilical cables are core connecting components of heavy-duty deep-sea operational equipment. Sea trials are a critical quality verification stage before delivery, and their physical structural integrity directly determines the safety of deep-sea operations. The deep-sea umbilical cable real-time detection system focuses on detecting the physical structural integrity of the umbilical cable. It precisely captures and provides real-time warnings of dynamic changes in the outer diameter and surface defects (including typical failure modes such as deformation, cracking, and torsion) during the sea trial phase. This system can promptly identify structural hazards generated during the manufacturing or deployment of the umbilical cable, providing operators with accurate defect location and troubleshooting information, ensuring the safety of sea trials and the reliability of the umbilical cable in subsequent service.

[0003] Existing testing technologies related to deep-sea umbilical cables mostly focus on monitoring the operational status of static submarine cables, providing early warnings of external threats, or testing electrical performance. Core technologies largely revolve around temperature strain monitoring, ship anchor damage warnings, and electrical fault diagnosis, generally employing a single-sensor monitoring, single-environment adaptation, or single-function design approach. These technologies either monitor cable stress and strain using distributed fiber optic sensors, provide early warnings of external ship threats using radar, sonar, and video equipment, or determine electrical faults through the fusion of magnetic field and power signals. However, none of these technical solutions are specifically designed to address the core attributes of deep-sea umbilical cables, such as "dynamic sea trial scenarios, large cross-section structures, high linear density characteristics, and the need for adaptation to complex marine environments." Therefore, they cannot meet the core requirement of physical structural integrity testing during the sea trial phase of deep-sea umbilical cables.

[0004] The existing technology has the following problems or shortcomings:

[0005] (1) Large deviation in compatibility: Existing technologies do not address the structural characteristics of deep-sea umbilical cables, such as "large cross-section, high linear density, and high pressure resistance," as well as the core requirements for verifying physical structural parameters (outer diameter, surface defects, and internal integrity) during sea trials. They can only monitor the temperature, strain, or electrical performance of ordinary submarine cables, which cannot meet the precise verification requirements of deep-sea umbilical cables for manufacturing quality and deployment safety during sea trials.

[0006] (2) Lack of deep-sea environment adaptation: Existing detection technologies do not take into account the complex and harsh environment of deep-sea umbilical cable sea trials, and lack integrated adaptation designs for the six degrees of freedom motion of the ship (roll, pitch, bow, sway, heave, and yaw), seawater droplet adhesion, high salt spray corrosion, and extreme temperatures (combined with the heating of the umbilical cable under sunlight). Among these, the ship's roll and pitch can easily cause the detection reference to shift, sway and heave can cause the umbilical cable to move laterally / longitudinally, heave causes fluctuations in the relative height between the detection equipment and the umbilical cable, and bow pitch can cause deviations in the detection angle. All these interferences will lead to a decrease in measurement accuracy. At the same time, existing technologies have not specifically addressed the problems of seawater droplet adhesion, salt spray corrosion, and temperature fluctuations, which can easily lead to equipment failure or detection interruption, and cannot guarantee continuous and stable detection during the sea trial process.

[0007] (3) Single and fragmented detection functions: Existing technologies are mostly single-function designs, or only monitor vibration disturbances, or only warn of external threats, or only detect electrical performance. They have not achieved the linkage detection of "outer diameter monitoring - surface defect identification - length correlation positioning". The detection efficiency and data correlation cannot meet the needs of real-time analysis in sea trials.

[0008] Testing deep-sea umbilical cables during sea trials faces multiple technical challenges: it requires overcoming factors such as deviations in testing benchmarks due to ship rolling, measurement interference caused by seawater droplets, equipment wear and tear due to high salt spray corrosion, and the impact of extreme temperatures on testing accuracy. Furthermore, it necessitates adapting to the large cross-section and high linear density of deep-sea umbilical cables to achieve accurate real-time testing under high-speed movement conditions. This presents significant challenges in technology integration and environmental adaptation. Existing technologies are primarily designed for static submarine cable operation and cannot meet the core requirements of deep-sea umbilical cable sea trials: "short time, high intensity, multiple environmental interferences, and high precision." Summary of the Invention

[0009] The purpose of this invention is to address the problems and shortcomings of existing technologies by providing a real-time structural integrity detection system and method for deep-sea umbilical cables during sea trials. This system can be applied to the deployment and retrieval of deep-sea umbilical cables during sea trials, enabling real-time detection of the cable's outer diameter and surface defects. It can accurately capture changes in outer diameter and surface damage caused by stretching, friction, bending, and collisions during deployment, providing data support for optimizing the manufacturing quality and deployment process of umbilical cables, and significantly reducing subsequent deep-sea maintenance risks.

[0010] To achieve the above objectives, the present invention adopts the following technical solution:

[0011] In a first aspect, the present invention provides a real-time structural integrity detection system for deep-sea umbilical cable sea trials. The system includes: a core detection module, an environment adaptive module, a data fusion processing module, and an integrated protection installation module, wherein:

[0012] The core detection module includes a laser diameter gauge and a meter counter. The laser diameter gauge and the meter counter are fixed by an adjustable lifting bracket, and their central axis is consistent with the direction of movement of the deep-sea umbilical cable.

[0013] The environmental adaptive module includes: an elastic damping guide wheel and a high-pressure airflow drying mold. The elastic damping guide wheel is symmetrically distributed at the front and rear ends of the laser diameter measuring instrument, and the high-pressure airflow drying mold is located between the elastic damping guide wheel and the laser diameter measuring instrument, forming a continuous environmental adaptation link.

[0014] The data fusion processing module includes an industrial control computer, a display terminal, and an alarm unit. The industrial control computer communicates bidirectionally with the laser diameter measuring instrument and the meter counter via an industrial Ethernet to achieve high-speed data transmission and command issuance.

[0015] The integrated protective installation module includes: a closed protective cover, an adjustable lifting bracket, a shock-absorbing pad, a temperature and humidity transmitter, and a three-axis attitude sensor. The closed protective cover is located outside the core detection module and the environmental adaptive module. The bottom of the adjustable lifting bracket is fixedly connected to the shock-absorbing pad. The temperature and humidity transmitter is installed inside the closed protective cover. The three-axis attitude sensor is deployed on the axis of the adjustable lifting bracket, forming a stable installation and protection system.

[0016] In a preferred embodiment, the laser diameter measuring instrument is used to: collect umbilical cable outer diameter data in real time, incorporate a defect identification algorithm, compare the abrupt difference between the real-time outer diameter and the historical average outer diameter, and determine surface defects; the meter counter is synchronously linked with the laser diameter measuring instrument to record the umbilical cable length position corresponding to the defect in real time, and transmit the data to the data fusion processing module at high speed through the industrial Ethernet interface;

[0017] The core detection module is equipped with two sets of elastic damping guide wheels at the front and rear ends. The elastic damping guide wheels are made of high-strength polyurethane. The spacing of each set of elastic damping guide wheels is adaptively matched with the diameter of the deep-sea umbilical cable. Together with the shock-absorbing pad, it absorbs the vertical vibration impact caused by heave.

[0018] The laser diameter measuring instrument is equipped with a high-pressure airflow drying mold at the front end, which fully covers the surface of the umbilical cable through an annular airflow channel to remove water droplets. The inner wall of the high-pressure airflow drying mold is coated with polytetrafluoroethylene.

[0019] In a preferred embodiment, the industrial control computer is used to: display the outer diameter curve, defect type, defect level, and corresponding length position of the umbilical cable in real time; automatically store historical data and support querying by time and length range; have a built-in data anomaly alarm function, triggering an audible and visual alarm when the outer diameter exceeds the tolerance or defects occur continuously, and simultaneously recording the environmental parameters at the alarm time; the industrial control computer also communicates bidirectionally with the temperature and humidity transmitter and the three-axis attitude sensor via industrial Ethernet to achieve high-speed data transmission and command issuance;

[0020] The enclosed protective cover is coated with an anti-salt spray and anti-corrosion coating inside, and a sunshade layer is installed on the top. Ventilation and heat dissipation holes are reserved on the sides. Temperature and humidity transmitters are installed in areas away from the high-pressure airflow drying mold outlet and the laser diameter measuring instrument lens to monitor environmental parameters in real time.

[0021] Secondly, the present invention also provides a method for real-time structural integrity detection in a deep-sea umbilical cable sea trial scenario based on the system described in the first aspect, comprising the following steps:

[0022] Sea trial preparation: Confirming the specifications of the umbilical cable and the layout of the research vessel's winch;

[0023] System installation and calibration: Align the system axis with the umbilical cable laying path, install and calibrate the core detection module;

[0024] Sea trial deployment monitoring: Real-time data analysis based on mutation threshold algorithm for scientific decision-making;

[0025] Real-time data processing and storage: Real-time display of outer diameter curves, storage of raw data, and screening of suspicious areas;

[0026] Umbilical cable retrieval monitoring: secondary verification of the umbilical cable structural status, comparison of deployment data to generate a difference report;

[0027] System dismantling and maintenance: The system is dismantled sequentially, cleaned and maintained, and an integrity assessment report is generated based on the analysis.

[0028] As a preferred embodiment, the sea trial preparation includes the following steps: confirming the specifications, material, and rated deployment speed of the umbilical cable; confirming the layout of the research vessel's winch, the deployment path of the umbilical cable, and its height above the deck; and marking these details.

[0029] In a preferred embodiment, the system installation and calibration includes the following steps:

[0030] Based on the layout of the research vessel winch, adjust the height of the adjustable lifting support to align the central axis of the system with the deep-sea umbilical cable laying path, fix the support and compact the shock-absorbing pads, and install a three-axis attitude sensor on the axis of the adjustable lifting support.

[0031] Install the elastic damping guide wheel, high-pressure airflow drying mold, laser diameter gauge, and meter counter in sequence, and set the zero starting point of the meter counter; after the core detection module is ready, install the enclosed protective cover and temperature and humidity transmitter;

[0032] Turn on the industrial control computer, input the standard parameters of the deep-sea umbilical cable, and perform accuracy calibration of the laser diameter measuring instrument using the standard calibration block;

[0033] Start the high-pressure airflow drying mold, adjust the airflow pressure, verify the water droplet removal effect, and the system enters the test-ready state after operation.

[0034] As a preferred embodiment, the sea trial deployment monitoring includes the following steps:

[0035] The winch is started, the deep-sea umbilical cable is laid, and it passes through the elastic damping guide wheel to correct the deviation caused by the ship's rolling, the high-pressure airflow blows the surface water droplets off the mold, and enters the core detection module.

[0036] The laser diameter gauge collects the outer diameter data of the umbilical cable in real time, the meter counter records the length and position simultaneously, and the data is transmitted to the industrial control computer. The software of the industrial control computer analyzes the data in real time through a mutation threshold algorithm.

[0037] When the outer diameter changes abruptly, it is determined to be a surface defect, and the defect type, corresponding length location, and duration are marked. When the outer diameter of consecutive sampling points exceeds the tolerance or the defect level reaches a critical level, the alarm unit immediately triggers an audible and visual alarm, prompting a pause in deployment and verification.

[0038] The industrial control computer's software synchronously records environmental parameters during the testing process, including temperature, humidity, and ship attitude data inside the protective cover, providing a basis for subsequent data anomaly analysis.

[0039] As a preferred embodiment, the real-time data processing and storage includes the following steps:

[0040] The display terminal displays the outer diameter curve, cumulative length value, and defect distribution map of the deep-sea umbilical cable in real time, and supports real-time viewing of detection data and environmental parameters at any length position;

[0041] The industrial computer stores all raw data and analysis results, facilitating subsequent quality analysis and process optimization.

[0042] Suspected internal defects are marked as "areas to be verified" to provide guidance for subsequent specialized internal structural inspections.

[0043] In a preferred embodiment, the umbilical cord retrieval monitoring includes the following steps:

[0044] The winch initiates the recovery procedure to retrieve the deep-sea umbilical cable. The system repeats the detection process from the deployment phase to conduct a secondary verification of the umbilical cable's structural condition during the recovery process.

[0045] The industrial control computer compares the detection data during the deployment and retrieval phases, generates a difference report, marks the new defects or changes in existing defects during the retrieval process, and comprehensively assesses the impact of the sea trial on the umbilical cable structure.

[0046] In a preferred embodiment, the system dismantling and maintenance includes the following steps:

[0047] After the sea trial, all equipment power was turned off, the core detection module and environmental adaptation module were disassembled, and the salt stains on the surface of the mold and elastic damping guide wheel were rinsed with fresh water and dried with high-pressure airflow. After drying, an anti-corrosion protective agent was applied.

[0048] Clean and maintain the lens of the laser diameter gauge, check the inner coating of the sealed protective cover for damage, and replace worn elastic damping guide wheels and shock-absorbing pads.

[0049] Export all test data from the industrial control computer, perform offline analysis, generate a deep-sea umbilical cable sea trial test report, and clarify the structural integrity assessment results and optimization suggestions.

[0050] Compared with the prior art, the present invention has at least the following beneficial effects:

[0051] (1) This invention can adapt to the six-degree-of-freedom rolling environment of ships, avoid the deviation of the outer diameter and defect detection benchmark caused by the swaying of deep-sea umbilical cables; efficiently remove seawater droplets attached to the surface of the umbilical cable, and ensure the accuracy of outer diameter measurement in high humidity environment; resist the high salt spray corrosion and extreme temperature fluctuations of marine operations, and extend the service life of the system in sea trials; realize the real-time detection and length correlation positioning of the outer diameter and surface defects of deep-sea umbilical cables, and improve the efficiency of sea trial detection.

[0052] (2) Compared with existing technologies that focus on monitoring the static operating status of submarine cables, this invention is specifically designed for deep-sea umbilical cable sea trial scenarios. It focuses on the detection of physical structural parameters and can directly meet the verification requirements for the manufacturing quality and deployment safety of umbilical cables during the sea trial phase, with better scenario adaptability. This invention can be applied to the deployment and retrieval process of deep-sea umbilical cables during sea trials, and can detect the outer diameter and surface defects of the umbilical cable in real time, including deformation, breakage, and torsion. It can accurately capture the changes in outer diameter and surface damage caused by deployment stretching, friction, bending, and collision during the sea trial, providing data support for optimizing the manufacturing quality and deployment process of umbilical cables, significantly reducing the risks of subsequent deep-sea maintenance, and playing an important role in ensuring the technological development of deep-sea engineering, offshore wind power, deep-sea exploration and other fields.

[0053] (3) Compared with existing single-environment-adaptive or single-function detection equipment, the present invention solves multiple marine environmental interferences simultaneously through integrated environmental adaptive design and multi-parameter linkage detection mechanism, and the detection stability and data integrity are significantly better than the existing technology.

[0054] (4) Compared with existing detection technologies that cannot be linked to environmental parameters, this invention links detection data with environmental parameters such as temperature and humidity and ship rolling angle, which helps to distinguish the causes of defects, such as manufacturing defects, deployment damage, and environmental interference, providing a more accurate direction for subsequent optimization, and making the detection depth and practicality stronger.

[0055] (5) Compared with existing fixed-installation testing equipment, the modular and adjustable design of the present invention greatly improves the flexibility of on-site deployment, can be adapted to different specifications of deep-sea umbilical cables and research vessel layouts, has a wider range of applications and stronger reusability. Attached Figure Description

[0056] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0057] Figure 1 This is a structural block diagram of the real-time structural integrity detection system for deep-sea umbilical cable sea trial scenario in Embodiment 1 of the present invention.

[0058] Figure 2 This is a structural block diagram of the core detection module in Embodiments 1 and 2 of the present invention.

[0059] Figure 3 This is a structural block diagram of the environment adaptive module in Embodiments 1 and 3 of the present invention.

[0060] Figure 4 This is a structural block diagram of the data fusion processing module in Embodiments 1 and 4 of the present invention.

[0061] Figure 5 This is a structural block diagram of the integrated protective installation module in Embodiments 1 and 5 of the present invention.

[0062] Figure 6 This is a flowchart of the real-time structural integrity detection method for deep-sea umbilical cable sea trial scenario in Embodiment 6 of the present invention.

[0063] Figure 7 A flowchart illustrating the preparation for the sea trial in Embodiment 7 of the present invention.

[0064] Figure 8 This is a flowchart of the system installation and calibration in Embodiment 8 of the present invention.

[0065] Figure 9 This is a flowchart of the sea trial deployment monitoring in Embodiment 9 of the present invention.

[0066] Figure 10 This is a flowchart of real-time data processing and storage in Embodiment 10 of the present invention.

[0067] Figure 11 This is a flowchart of the umbilical cable recovery monitoring in Embodiment 11 of the present invention.

[0068] Figure 12This is a flowchart of the system dismantling and maintenance in Embodiment 12 of the present invention.

[0069] Figure label:

[0070] 1-Core detection module, 1a-Laser diameter gauge, 1b-Meter counter;

[0071] 2-Environmentally adaptive module, 2a-Elastic damping guide wheel, 2b-High-pressure airflow drying mold;

[0072] 3-Data fusion processing module, 3a-Industrial control computer, 3b-Display terminal, 3c-Alarm unit;

[0073] 4-Integrated protective installation module, 4a-Enclosed protective cover, 4b-Adjustable lifting bracket, 4c-Shock damping pad, 4d-Temperature and humidity transmitter, 4e-Three-axis attitude sensor. Detailed Implementation

[0074] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0075] In the description of this invention, it should be understood that the orientation or positional relationship indicated by terms such as "above" is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this invention is usually placed when in use, or the orientation or positional relationship in which those skilled in the art are usually understood. It is only for the convenience of describing this invention and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this invention.

[0076] The order in which the embodiments are described below is not intended to limit the preferred order of the embodiments. Furthermore, in the description of this application, the term "comprising" means "including but not limited to". Various embodiments of the invention may exist in the form of a range; it should be understood that the description in the form of a range is merely for convenience and brevity and should not be construed as a rigid limitation on the scope of the invention; therefore, it should be considered that the range description has specifically disclosed all possible sub-ranges and single numerical values ​​within that range. For example, it should be considered that the range description from 1 to 6 has specifically disclosed sub-ranges, such as from 1 to 3, from 1 to 4, from 1 to 5, from 2 to 4, from 2 to 6, from 3 to 6, etc., and single numbers within the range, such as 1, 2, 3, 4, 5, and 6, regardless of the range. Additionally, whenever a numerical range is indicated herein, it means including any referenced number (fraction or integer) within the indicated range.

[0077] Example 1: Real-time Structural Integrity Detection System for Deep-Sea Umbilical Cable Sea Trial

[0078] Embodiment 1 of this invention provides a real-time structural integrity detection system for deep-sea umbilical cables during sea trials. For ease of description, it will be referred to as the "umbilical cable real-time detection system" below. See also... Figure 1 As shown, the real-time umbilical cable detection system includes: a core detection module 1, an environmental adaptive module 2, a data fusion processing module 3, and an integrated protective installation module 4. The system is integrated on an adjustable lifting support next to the research vessel winch and works in conjunction with the deep-sea umbilical cable deployment and recovery system.

[0079] See Figure 2 As shown, the core detection module 1 includes a laser diameter gauge 1a and a meter counter 1b. The laser diameter gauge 1a and the meter counter 1b are fixed by an adjustable lifting bracket, and their central axis is consistent with the direction of movement of the deep-sea umbilical cable to ensure a unified detection standard.

[0080] See Figure 3 As shown, the environment adaptive module 2 includes: an elastic damping guide wheel 2a and a high-pressure airflow drying module 2b. The elastic damping guide wheel 2a is symmetrically distributed at the front and rear ends of the laser diameter measuring instrument 1a, and the high-pressure airflow drying module 2b is located between the elastic damping guide wheel 2a and the laser diameter measuring instrument 1a, forming a continuous environment adaptation link.

[0081] See Figure 4 As shown, the data fusion processing module 3 includes: an industrial control computer 3a, a display terminal 3b, and an alarm unit 3c. The industrial control computer 3a communicates bidirectionally with the laser diameter measuring instrument 1a and the meter counter 1b via industrial Ethernet to achieve high-speed data transmission and command issuance.

[0082] See Figure 5 As shown, the integrated protective installation module 4 includes: a closed protective cover 4a, an adjustable lifting bracket 4b, a shock-absorbing pad 4c, a temperature and humidity transmitter 4d, and a three-axis attitude sensor 4e. The closed protective cover 4a is located outside the core detection module 1 and the environmental adaptive module 2. The bottom of the adjustable lifting bracket 4b is fixedly connected to the shock-absorbing pad 4c. The temperature and humidity transmitter 4d is installed inside the closed protective cover 4a. The three-axis attitude sensor 4e is deployed on the axis of the adjustable lifting bracket 4b, forming a stable installation and protection system.

[0083] The industrial computer 3a also communicates bidirectionally with the temperature and humidity transmitter 4d and the three-axis attitude sensor 4e via industrial Ethernet to achieve high-speed data transmission and command issuance.

[0084] Example 2: Core Detection Module in Real-time Umbilical Cable Detection System

[0085] Based on Example 1, in the real-time umbilical cable detection system of this example, the core detection module 1 adopts a modular integrated design, see [link to example]. Figure 2 As shown, in practical applications, both the laser diameter gauge 1a and the meter counter 1b are equipped with a fast calibration interface, which supports parameter calibration within one hour before sea trials and can adapt to the testing needs of deep-sea umbilical cables of different specifications.

[0086] The core detection module 1 integrates a high-precision laser diameter gauge 1a, with a measurement range of 50-100mm and an accuracy of ±0.01mm. It collects umbilical cable outer diameter data in real time through the principle of bidirectional laser projection. It has a built-in defect identification algorithm to compare the sudden difference between the real-time outer diameter and the historical average outer diameter. The threshold can be set to ±0.5mm to accurately determine defects such as surface unevenness, deformation, cracking, and torsion.

[0087] The core detection module 1 is equipped with a high-precision meter counter 1b with a measurement accuracy of ±0.1m. It is synchronized with the laser diameter measuring instrument 1a to record the umbilical cable length and position corresponding to the defect in real time. The data is transmitted at high speed to the data fusion processing module 3 through the industrial Ethernet interface.

[0088] Example 3: Environmental Adaptive Module in Real-time Umbilical Cable Detection System

[0089] Based on Example 2, in order to solve the ship rolling problem, in the real-time umbilical cable detection system of this example, two sets of elastic damping guide wheels 2a are installed at the front and rear ends of the core detection module 1. See [link to example]. Figure 3 As shown, the elastic damping guide wheel 2a is made of high-strength polyurethane. The spacing of each set of elastic damping guide wheels 2a is adaptively matched with the diameter of the deep-sea umbilical cable, for example, 50-100mm, forming a four-point positioning constraint. Through the elastic buffering characteristics of the guide wheel, the detection reference offset caused by roll ±15° and pitch ±10° is offset, while limiting the lateral and longitudinal movement of the umbilical cable caused by sway and pitch. In conjunction with the shock-absorbing pad 4c of the integrated protective installation module 4, the vertical vibration impact caused by heave is further absorbed, reducing the impact of relative height fluctuation on the measurement.

[0090] To address the issue of seawater droplet adhesion, this embodiment incorporates a high-pressure airflow drying mold 2b located 10cm from the front end of the laser diameter gauge 1a. (See [reference]). Figure 3 As shown, the airflow pressure of the high-pressure airflow drying mold 2b is 0.3-0.5MPa, and the airflow temperature is 25±5℃. It fully covers the surface of the umbilical cable through the annular airflow channel, effectively removing water droplets. The inner wall of the high-pressure airflow drying mold 2b is coated with polytetrafluoroethylene to reduce frictional damage to the surface of the umbilical cable.

[0091] Example 4: Data Fusion Processing Module in Real-time Umbilical Cable Detection System

[0092] Based on Example 3, in this example, the hardware of the data fusion processing module 3 in the real-time umbilical cable detection system adopts an industrial-grade industrial control computer 3a, see [link to example]. Figure 4 As shown, the industrial PC 3a supports parallel data acquisition from multiple devices and is equipped with a waterproof and dustproof interface to meet the requirements for use in marine environments.

[0093] The software of the industrial control computer 3a has three core functions: real-time display of the outer diameter curve of the umbilical cable, defect type, defect level and corresponding length position; automatic storage of historical data, supporting quick query by time and length range; and built-in data anomaly alarm function, which triggers an audible and visual alarm when the outer diameter exceeds the tolerance or defects occur continuously, and records the environmental parameters at the time of the alarm.

[0094] Example 5: Integrated protective installation module in the real-time umbilical cable detection system

[0095] Based on Example 4, in order to solve the problems of high salt spray and sun exposure, in this example, the integrated protective installation module 4 of the umbilical cable real-time detection system is designed with a closed protective cover 4a. The closed protective cover 4a is made of 316L stainless steel and PC board. The inside of the cover is coated with an anti-salt spray and anti-corrosion coating. A sunshade and sun protection layer is installed on the top, and ventilation and heat dissipation holes are reserved on the side to take into account both protection and heat dissipation requirements. A temperature and humidity transmitter 4d is installed in the area away from the outlet of the high-pressure airflow drying mold 2b and the lens of the laser diameter measuring instrument 1a to monitor environmental parameters in real time.

[0096] This embodiment is designed with a deep-sea composite environment adaptive system: an integrated environment adaptive module 2 that integrates an elastic damping guide wheel 2a, a high-pressure airflow drying mold 2b, and a closed protective cover 4a. It simultaneously solves the four core interferences of ship swaying, water droplet adhesion, salt spray corrosion, and temperature fluctuation. It has stronger adaptability than existing single environment adaptation technologies and is deeply matched to the harsh environment of deep-sea umbilical cable sea trials.

[0097] See Figure 5 As shown, the real-time umbilical cable detection system in this embodiment is installed on the adjustable lifting bracket 4b of the integrated protective installation module 4. The adjustable lifting bracket 4b has an adjustment range of 50-150cm. The bottom of the adjustable lifting bracket 4b is equipped with a high-strength shock-absorbing pad 4c. The shock-absorbing pad 4c is made of nitrile rubber and has a thickness of 20mm. Its multi-layer damping structure can effectively absorb the vibration energy generated by the ship's heave motion and reduce the risk of equipment resonance. A three-axis attitude sensor 4e is fixed on the adjustable lifting bracket 4b to ensure that the reference for sway angle measurement and umbilical cable offset detection is consistent. The three-axis attitude sensor 4e collects the ship's roll, pitch, and bow angle data in real time and transmits the data to the data fusion processing module 3.

[0098] All electrical equipment in this embodiment is designed with an IP67 waterproof rating, the cables are armored waterproof cables, the joints are waterproof and sealed, and the protective cover and the bracket are connected with a sealing ring to effectively resist the corrosion of high salt spray and high humidity environments.

[0099] This embodiment features a modular integrated rapid deployment structure: the core detection module 1, the environmental adaptive module 2, and the data fusion processing module 3 are all modularly designed, supporting rapid disassembly, calibration, and replacement. The overall support height is adjustable to adapt to the winch layout of different research vessels. Compared with existing fixed-installation equipment, the deployment flexibility is effectively improved, meeting the rapid commissioning requirements of deep-sea umbilical cable sea trials.

[0100] This embodiment is designed with a multi-parameter linkage detection mechanism: through the high-speed synchronous linkage of the laser diameter gauge 1a and the meter counter 1b, combined with the mutation threshold algorithm and data fusion analysis, real-time correlation detection of outer diameter, surface defects and length position is realized, and the data correlation and traceability are significantly enhanced.

[0101] Example 6: Real-time detection method for structural integrity in deep-sea umbilical cable sea trial scenario

[0102] See Figure 6 As shown, based on any one of the embodiments 1-5, Embodiment 6 of the present invention provides a method for real-time detection of structural integrity in a deep-sea umbilical cable sea trial scenario, hereinafter referred to as: umbilical cable real-time detection method, which includes the following steps:

[0103] Step S1, Sea Trial Preparation: Confirm the umbilical cable specifications and the winch layout of the research vessel;

[0104] Step S2, System Installation and Calibration: Align the system axis with the umbilical cable laying path, install and calibrate the core detection module 1 in sequence;

[0105] Step S3, Sea Trial Deployment Monitoring: Real-time data analysis based on the mutation threshold algorithm, and scientific decision-making;

[0106] Step S4, Real-time Data Processing and Storage: Real-time display of outer diameter curve, storage of raw data, and screening of suspicious areas;

[0107] Step S5, Umbilical Cable Retrieval Monitoring: Secondary verification of the umbilical cable structural status, comparison of deployment data to generate a difference report;

[0108] Step S6, System Dismantling and Maintenance: Dismantle the system in sequence, clean and maintain it, and analyze and generate an integrity assessment report.

[0109] The following, in conjunction with specific embodiments and accompanying drawings, further describes the specific steps of the real-time structural integrity detection method for deep-sea umbilical cable sea trials according to embodiments of the present invention. It should be understood that the following embodiments are only used to explain the technical solutions of the method steps in the embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. Equivalent substitutions or modifications made by those skilled in the art without departing from the concept of the present invention should all fall within the scope of protection of the present invention.

[0110] Example 7: Sea Trial Preparation Steps in the Real-Time Detection Method for Umbilical Cables

[0111] Based on Example 6, in this example, step S1 of the real-time detection method for the umbilical cable is specifically applied in a real sea trial scenario, as illustrated below:

[0112] Step S1, Sea Trial Preparation: Confirm the umbilical cable specifications and the winch layout of the research vessel. See [link / reference] Figure 7 As shown, the specific steps include:

[0113] Step S101: Confirm the specifications of the umbilical cable, for example, outer diameter 54mm, material is aramid armored type, rated deployment speed 30m / min;

[0114] Step S102: Confirm the layout of the research vessel's winch, the umbilical cable laying path, and the height above the deck, and mark them.

[0115] Example 8: System Installation and Calibration Steps in the Real-time Detection Method for Umbilical Cables

[0116] Based on Example 7, step S2 of the real-time detection method for umbilical cables in this example is illustrated in one specific application of the method in a real sea trial scenario as follows:

[0117] Step S2, System Installation and Calibration: Align the system axis with the umbilical cable laying path, install sequentially, and calibrate core detection module 1 (see [link]). Figure 8 As shown, the specific steps include:

[0118] Step S201: According to the layout of the research vessel winch, adjust the height of the adjustable lifting support 4b so that the central axis of the system is precisely aligned with the deep-sea umbilical cable laying path, fix the support and compact the shock-absorbing pad 4c, and install the three-axis attitude sensor 4e on the axis of the adjustable lifting support 4b.

[0119] Step S202: Install the elastic damping guide wheel 2a, high-pressure airflow drying mold 2b, laser diameter measuring instrument 1a, and meter counter 1b in sequence, ensuring that the coaxiality error of the central axis of each device is ≤0.1mm. Then set the zero starting point of the meter counter 1b. After the core detection module 1 is ready, install the enclosed protective cover 4a and the temperature and humidity transmitter 4d.

[0120] Step S203: Turn on the industrial control computer 3a, input the standard parameters of the deep-sea umbilical cable, and perform accuracy calibration on the laser diameter measuring instrument 1a through the standard calibration block (which is consistent with the standard outer diameter of the umbilical cable) to ensure that the measurement error is controlled within ±0.01mm;

[0121] Step S204: Start the high-pressure airflow to dry the mold 2b, adjust the airflow pressure to 0.4MPa, verify the water droplet removal effect, and enter the test ready state after the system has been running for 10 minutes.

[0122] Example 9: Sea Trial Deployment Monitoring Steps in Real-Time Detection Method for Umbilical Cables

[0123] Based on Example 8, step S3 of the real-time detection method for umbilical cables in this example is illustrated in one specific application of the method in a real sea trial scenario, as follows:

[0124] Step S3, Sea Trial Deployment Monitoring: Real-time data analysis based on a mutation threshold algorithm to make scientific decisions. (See [link to relevant documentation]). Figure 9 As shown, the specific steps include:

[0125] Step S301: Start the winch and lay the deep-sea umbilical cable at a speed of 30m / min. It passes through the elastic damping guide wheel 2a to correct the deviation caused by the ship's rolling, and the high-pressure airflow blows the drying mold 2b to remove surface water droplets. Then it enters the core detection module 1.

[0126] Step S302: The laser diameter measuring instrument 1a collects the outer diameter data of the umbilical cable in real time, and the meter counter 1b records the length position synchronously. The data is transmitted to the industrial control computer 3a every 0.1 seconds. The software analyzes the data in real time through the mutation threshold algorithm. The threshold can be set to ±0.5mm.

[0127] Step S303: When the outer diameter changes by ≥0.5mm, it is automatically determined to be a surface defect, and the defect type is marked as: uneven, deformed, cracked, or torn, with corresponding length, position, and duration. When the outer diameter of three consecutive sampling points exceeds the tolerance or the defect level reaches a severe level, for example, when the outer diameter changes by ≥1mm, the alarm unit 3c immediately triggers an audible and visual alarm, prompting the operator to suspend deployment and check.

[0128] In step S304, the software of the industrial control computer 3a synchronously records the environmental parameters during the detection process, including the temperature, humidity and ship attitude data inside the protective cover, to provide a basis for subsequent data anomaly analysis.

[0129] Example 10: Real-time data processing and storage steps in the real-time detection method for umbilical cord cables

[0130] Based on Example 9, step S4 of the real-time detection method for the umbilical cable in this example is illustrated in one specific application of the method in a real sea trial scenario as follows:

[0131] Step S4, Real-time Data Processing and Storage: Real-time display of the outer diameter curve, storage of raw data, and screening of suspicious areas. See [link / reference] Figure 10 As shown, the specific steps include:

[0132] Step S401: Display terminal 3b displays the outer diameter curve, cumulative length value, and defect distribution map of the deep-sea umbilical cable in real time, and supports real-time viewing of detection data and environmental parameters at any length position;

[0133] Step S402: The industrial control computer 3a automatically stores all raw data and analysis results, naming the files according to "Date-Sea Trial Batch-Umbilical Cable Specification", supporting export in multiple formats, which facilitates subsequent quality analysis and process optimization;

[0134] Step S403: For suspected internal defects, such as: no significant change in outer diameter, but continuous slight fluctuations in length, the software of industrial control computer 3a automatically marks it as "area to be checked", providing accurate guidance for subsequent special internal structure inspection.

[0135] Example 11: Umbilical cable retrieval monitoring steps in the real-time umbilical cable detection method

[0136] Based on Example 10, step S5 of the real-time detection method for umbilical cables in this example is illustrated in one specific application of the method in a real sea trial scenario as follows:

[0137] Step S5, Umbilical Cable Retrieval Monitoring: Secondary verification of the umbilical cable structural status, comparison of deployment data to generate a difference report, see [link / reference]. Figure 11 As shown, the specific steps include:

[0138] Step S501: The winch starts the recovery procedure, and the deep-sea umbilical cable is recovered at a speed of ≤30m / min. The system repeats the detection process of the deployment stage to verify the structural status of the umbilical cable during the recovery process.

[0139] In step S502, the software of the industrial control computer 3a automatically compares the detection data during the deployment and recovery stages, generates a difference report, highlights the new defects or changes in existing defects during the recovery process, and comprehensively assesses the impact of the sea trial process on the umbilical cable structure.

[0140] Example 12: System Dismantling and Maintenance Steps in the Real-time Detection Method for Umbilical Cables

[0141] Based on Example 11, step S6 of the real-time structural integrity detection method in the umbilical cable sea trial scenario in this example is illustrated as follows:

[0142] Step S6, System Dismantling and Maintenance: Dismantle the system sequentially, clean and maintain it, and analyze and generate an integrity assessment report. (See attached document) Figure 12 As shown, the specific steps include:

[0143] Step S601: After the sea trial, turn off the power to all equipment, disassemble the core detection module 1 and the environmental adaptation module 2, rinse with fresh water and blow dry the salt stains on the surface of the mold 2b and the elastic damping guide wheel 2a with high-pressure airflow, wipe dry and apply anti-corrosion protective agent.

[0144] Step S602: Clean and maintain the lens of the laser diameter measuring instrument 1a, check whether the inner coating of the closed protective cover 4a is intact, and replace the worn elastic damping guide wheel 2a and shock-absorbing pad 4c.

[0145] Step S603: Export all test data from the industrial control computer 3a, perform offline analysis, generate a deep-sea umbilical cable sea trial test report, and clarify the structural integrity assessment results and optimization suggestions.

[0146] In this embodiment of the invention, the advantages of the real-time structural integrity detection system and method for deep-sea umbilical cable sea trials are as follows:

[0147] (1) Strong adaptability to deep-sea environment: The system of this embodiment integrates an elastic damping guide wheel 2a, a high-pressure airflow drying mold 2b, a constant temperature guide channel, and an anti-corrosion protective cover into an integrated environmental adaptive module 2, which can simultaneously cope with ship rolling: ±15° roll, ±10° pitch, as well as complex marine environmental interference such as water droplet adhesion, salt spray corrosion, and temperature fluctuations. No additional auxiliary adaptation equipment is required, and it can stably adapt to the harsh operating conditions of deep-sea umbilical cable sea trials.

[0148] (2) High detection accuracy: The core detection module 1 adopts a high-precision laser diameter gauge 1a and meter counter 1b working in a collaborative mode. The measurement accuracy of the laser diameter gauge 1a can reach ±0.01mm. Combined with the defect identification algorithm, it can accurately capture the subtle changes in the outer diameter of the umbilical cable and defects such as surface deformation, cracking, and torsion, and realize the accurate correlation between defect type and length position, providing clear investigation basis for operators.

[0149] (3) Strong data correlation: The data fusion processing module 3 can simultaneously collect detection data and environmental parameters: temperature and humidity inside the protective cover, ship sway angle, realize multi-dimensional data linkage storage, real-time display and traceability query, provide complete data support for defect cause analysis and data anomaly investigation, and improve the credibility and practicality of detection results.

[0150] (4) Convenient deployment and maintenance: The core detection module 1, environmental adaptive module 2, and data fusion processing module 3 all adopt modular integrated design and are equipped with adjustable lifting bracket 4b, which facilitates quick on-site installation, parameter calibration and equipment disassembly. They can be adapted to the winch layout of different scientific research vessels, significantly reducing the operational difficulty and debugging cost at the sea trial site.

[0151] (5) Reliable protection performance: In the system of this embodiment, all electrical equipment adopts IP67 waterproof design, the protective cover is coated with anti-salt spray and anti-corrosion coating, key interfaces are equipped with sealing structure, and the cable adopts armored waterproof type, which can effectively resist the corrosion of high salt spray and high humidity marine environment, and ensure the long-term stable operation of the system during sea trial.

[0152] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for real-time structural integrity detection in deep-sea umbilical cable sea trial scenarios, based on a real-time structural integrity detection system, the system comprising: The core detection module, environmental adaptation module, data fusion processing module, and integrated protection installation module include: The core detection module includes a laser diameter gauge and a meter counter. The laser diameter gauge and the meter counter are fixed by an adjustable lifting bracket, and their central axis is consistent with the direction of movement of the deep-sea umbilical cable. The environmental adaptation module includes: elastic damping guide wheels and high-pressure airflow drying mold. The elastic damping guide wheels are symmetrically distributed at the front and rear ends of the laser diameter measuring instrument, and the high-pressure airflow drying mold is located between the elastic damping guide wheels and the laser diameter measuring instrument, forming a continuous environmental adaptation link. The data fusion processing module includes an industrial control computer, a display terminal, and an alarm unit. The industrial control computer communicates bidirectionally with the laser diameter measuring instrument and the meter counter via industrial Ethernet to achieve high-speed data transmission and command issuance. The integrated protective installation module includes: a closed protective cover, an adjustable lifting bracket, shock-absorbing pads, a temperature and humidity transmitter, and a three-axis attitude sensor. The closed protective cover is located outside the core detection module and the environmental adaptive module. The bottom of the adjustable lifting bracket is fixedly connected to the shock-absorbing pads. The temperature and humidity transmitter is installed inside the closed protective cover. The three-axis attitude sensor is deployed on the axis of the adjustable lifting bracket, forming a stable installation and protection system. The method is characterized by comprising the following steps: Sea trial preparation: Confirming the specifications of the umbilical cable and the layout of the research vessel's winch; System installation and calibration: Align the system axis with the umbilical cable laying path, install and calibrate the core detection module; Sea trial deployment monitoring: Real-time data analysis based on mutation threshold algorithm for scientific decision-making; Real-time data processing and storage: Real-time display of outer diameter curves, storage of raw data, and screening of suspicious areas; Umbilical cable retrieval monitoring: secondary verification of the umbilical cable structural status, comparison of deployment data to generate a difference report; System dismantling and maintenance: The system is dismantled sequentially, cleaned and maintained, and an integrity assessment report is generated based on the analysis.

2. The method for real-time detection of structural integrity in a deep-sea umbilical cable sea trial scenario as described in claim 1, characterized in that, The sea trial preparation includes the following steps: confirming the specifications, material, and rated deployment speed of the umbilical cable; confirming the layout of the research vessel's winch, the deployment path of the umbilical cable, and its height above the deck; and marking these details.

3. The method for real-time detection of structural integrity in a deep-sea umbilical cable sea trial scenario as described in claim 2, characterized in that, The system installation and calibration include the following steps: Based on the layout of the research vessel winch, adjust the height of the adjustable lifting support to align the central axis of the system with the deep-sea umbilical cable laying path, fix the support and compact the shock-absorbing pads, and install a three-axis attitude sensor on the axis of the adjustable lifting support. Install the elastic damping guide wheel, high-pressure airflow drying mold, laser diameter gauge, and meter counter in sequence, and set the zero starting point of the meter counter; after the core detection module is ready, install the enclosed protective cover and temperature and humidity transmitter. Turn on the industrial control computer, input the standard parameters of the deep-sea umbilical cable, and perform accuracy calibration of the laser diameter measuring instrument using the standard calibration block; Start the high-pressure airflow drying mold, adjust the airflow pressure, verify the water droplet removal effect, and the system enters the test-ready state after operation.

4. The method for real-time detection of structural integrity in a deep-sea umbilical cable sea trial scenario as described in claim 3, characterized in that, The sea trial deployment and monitoring includes the following steps: The winch is started, the deep-sea umbilical cable is laid, and it passes through the elastic damping guide wheel to correct the deviation caused by the ship's rolling, the high-pressure airflow blows the surface water droplets off the mold, and enters the core detection module. The laser diameter gauge collects the outer diameter data of the umbilical cable in real time, the meter counter records the length and position simultaneously, and the data is transmitted to the industrial control computer. The software of the industrial control computer analyzes the data in real time through a mutation threshold algorithm. When the outer diameter changes abruptly, it is determined to be a surface defect, and the defect type, corresponding length location, and duration are marked. When the outer diameter of consecutive sampling points exceeds the tolerance or the defect level reaches a critical level, the alarm unit immediately triggers an audible and visual alarm, prompting a pause in deployment and verification. The industrial control computer's software synchronously records environmental parameters during the testing process, including temperature, humidity, and ship attitude data inside the protective cover, providing a basis for subsequent data anomaly analysis.

5. The method for real-time structural integrity detection in a deep-sea umbilical cable sea trial scenario as described in claim 4, characterized in that, The real-time data processing and storage includes the following steps: The display terminal displays the outer diameter curve, cumulative length value, and defect distribution map of the deep-sea umbilical cable in real time, and supports real-time viewing of detection data and environmental parameters at any length position; The industrial computer stores all raw data and analysis results, facilitating subsequent quality analysis and process optimization. Suspected internal defects are marked as "areas to be verified" to provide guidance for subsequent specialized internal structural inspections.

6. The method for real-time detection of structural integrity in a deep-sea umbilical cable sea trial scenario as described in claim 5, characterized in that, The umbilical cable retrieval monitoring includes the following steps: The winch initiates the recovery procedure to retrieve the deep-sea umbilical cable. The system repeats the detection process from the deployment phase to conduct a secondary verification of the umbilical cable's structural condition during the recovery process. The industrial control computer compares the detection data during the deployment and retrieval phases, generates a difference report, marks the new defects or changes in existing defects during the retrieval process, and comprehensively assesses the impact of the sea trial process on the umbilical cable structure.

7. The method for real-time structural integrity detection in a deep-sea umbilical cable sea trial scenario as described in claim 6, characterized in that, The system dismantling and maintenance includes the following steps: After the sea trial, all equipment power was turned off, the core detection module and environmental adaptation module were disassembled, and the salt stains on the surface of the mold and elastic damping guide wheel were rinsed with fresh water and dried with high-pressure airflow. After drying, an anti-corrosion protective agent was applied. Clean and maintain the lens of the laser diameter gauge, check the inner coating of the sealed protective cover for damage, and replace worn elastic damping guide wheels and shock-absorbing pads. Export all test data from the industrial control computer, perform offline analysis, generate a deep-sea umbilical cable sea trial test report, and clarify the structural integrity assessment results and optimization suggestions.

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