Anti-cracking hydrogen-doped pipeline system and performance degradation monitoring method thereof

Abstract

The invention relates to the technical field of new energy pipelines, in particular to an anti-cracking hydrogen-doped pipeline system and a performance degradation monitoring method thereof. The hydrogen-doped pipeline system comprises a pipeline assembly, a supporting assembly, an operation assembly, a power assembly, a storage battery pack, a system control cabinet and a power generation assembly, the phenomena of hydrogen permeation and gas stratification are effectively inhibited through innovative pipeline structure design and material optimization in the system level, the hydrogen embrittlement risk is reduced from the source, and the energy consumption is reduced. According to the method, the hydrogen atom diffusion tracking and crack initiation prediction are combined, and a multi-scale collaborative monitoring system is constructed, so that the whole-process monitoring from hydrogen atom diffusion tracking to crack initiation prediction is realized, and particularly, a quantum dot marking technology is combined with a traditional sensing network, so that the service life of the pipeline can be effectively prolonged, and the reliability and the maintenance efficiency of safety monitoring are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy pipelines, and in particular to a crack-proof hydrogen-doped pipeline system and a method for monitoring performance degradation thereof. Background Art

[0002] Since the density of hydrogen is lower than that of natural gas, during the gas transmission process of the hydrogen-blended pipeline, under the action of gravity, hydrogen will gradually float to the top of the pipeline, while natural gas will sink to the bottom, forming a clear stratification phenomenon. This causes the concentration of hydrogen in the local space of the pipeline, leading to "hydrogen embrittlement" of the metal material of the transmission pipeline, accelerating the degradation of material properties, and even structural cracking, affecting the strength and stability of the pipeline. Currently, the industry has proposed a "segmented automated inspection of detection equipment" method to strengthen the investigation of defects in hydrogen-blended pipelines. By wirelessly locating defect points, maintenance personnel are guided to perform on-site fixed-point maintenance. However, the detection and maintenance of the above method is very difficult, and it does not effectively alleviate the performance degradation and cracking trend of the hydrogen-blended pipeline, that is, it fails to effectively extend the service life of the hydrogen-blended pipeline and reduce the detection and maintenance costs. In response to the problems of material performance degradation and structural cracking caused by gas stratification in hydrogen-blended pipelines, the present invention proposes a crack-resistant hydrogen-blended pipeline system and a performance degradation monitoring method thereof. Summary of the Invention

[0003] The present invention overcomes the deficiencies of the prior art and provides a crack-resistant hydrogen-doped pipeline system and a method for monitoring performance degradation thereof.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is:

[0005] A first aspect of the present invention discloses a crack-resistant hydrogen-doped pipeline system, comprising a pipeline assembly, a support assembly, an operating assembly, a power assembly, a battery pack, a system control cabinet, and a power generation assembly;

[0006] The pipeline assembly consists of a flange, bolt holes, a pipeline, an air inlet and an air outlet. The flange is welded and fixed to the pipeline. The bolt holes are evenly distributed on the flange. The air inlet and the air outlet are evenly distributed on the pipeline.

[0007] The operating assembly consists of a rotating sleeve, an exhaust pipe, a fan housing, a fan control circuit, an air blowing pipe, fan blades, a fan drive motor and a fan drive motor support frame; the exhaust pipe is welded and fixed to the rotating sleeve, and a hole is opened at a preset position of the rotating sleeve; the exhaust pipe is welded and fixed to the fan housing, and the air blowing pipe is welded and fixed to the fan housing; the air blowing pipe is welded and fixed to the rotating sleeve, and a hole is opened at a preset position of the rotating sleeve; the fan drive motor support frame is welded and fixed to the fan housing, the fan drive motor is welded and fixed to the fan drive motor support frame, and the fan blades are fixed to the fan drive motor by bolts;

[0008] The power assembly consists of a motor base, a bearing seat, a power assembly bearing outer ring, a power assembly ball, a power assembly bearing inner ring, a transmission worm gear, a transmission worm, a motor fixing bolt, a power assembly drive motor and a motor control circuit; the motor base is welded and fixed to the pipeline, the bearing seat is welded and fixed to the motor base, the power assembly bearing outer ring is installed on the bearing seat, and the power assembly drive motor is fixed to the motor base by the motor fixing bolts.

[0009] Furthermore, one end of the fan control circuit is connected to the fan drive motor, and the other end is connected to the system control cabinet; one end of the motor control circuit is connected to the powertrain drive motor, and the other end is connected to the system control cabinet; the transmission worm gear is engaged with the transmission worm.

[0010] Furthermore, the support assembly is composed of a locking nut, a support assembly ball, a bearing limit frame, a support plate, a support assembly bearing outer ring and a support assembly bearing inner ring. The support plate is welded and fixed to the pipe, and the bearing limit frame is evenly distributed around the circumference and welded and fixed to the support plate. The locking nut and the bearing limit frame are threadedly matched, and the pressure between the locking nut and the support assembly bearing outer ring is adjusted by rotating the locking nut, and the support assembly bearing outer ring and the support assembly bearing inner ring transmit the clamping force through the support assembly balls. The support assembly bearing inner ring is welded and fixed to the rotating sleeve, and the support assembly bearing outer ring and the support assembly bearing inner ring rotate relative to the support assembly balls.

[0011] Furthermore, the power generation assembly consists of wind turbine blades, photovoltaic panels, a wind turbine main shaft, a wind turbine generator set, an anemometer, a wind turbine tower, tower fixing bolts, a fixing sleeve, a tower support frame and a wind power photovoltaic cable; the photovoltaic panels are respectively fixed to the windward and leeward sides of the wind turbine blades, the wind turbine blades are fixed to the wind turbine main shaft, the wind turbine main shaft is installed on the wind turbine generator set, the anemometer is installed on the wind turbine generator set, the wind turbine generator set is installed on the wind turbine tower through a rotating pair, the wind tower is installed on the tower support frame through tower fixing bolts, the tower support frame is welded and fixed to the fixing sleeve, and the fixing sleeve is welded and fixed to the pipeline; one end of the wind power photovoltaic cable is connected to the photovoltaic panel and the wind turbine generator set, and the other end is connected to the system control cabinet; the battery pack is fixed to the tower support frame, one end of the battery pack cable is connected to the battery pack, and the other end is connected to the system control cabinet.

[0012] Furthermore, sealing rings are provided on the air inlet and air outlet of the pipeline, and the shape of the sealing rings is corrugated; the cross-sectional area of the air inlet is larger than that of the air outlet, and the diameter of the exhaust pipe is larger than that of the air blowing pipe, so as to increase the air flow velocity at the air outlet, so that the natural gas and hydrogen in the pipeline are fully mixed.

[0013] Furthermore, the angle between the axis of the exhaust pipe and the axis of the rotating sleeve is less than 45°, so that the conveying gas can smoothly enter the exhaust pipe and increase the air intake of the exhaust pipe; the angle between the axis of the blowing pipe and the axis of the rotating sleeve is greater than 60°, so that the natural gas and hydrogen in the pipeline are fully mixed.

[0014] A second aspect of the present invention discloses a method for monitoring performance degradation of a crack-resistant hydrogen-doped pipeline system, which is applicable to any of the aforementioned crack-resistant hydrogen-doped pipeline systems and comprises the following steps:

[0015] The diffusion trajectory of hydrogen atoms in the metal lattice of the tube wall is captured in real time, and the three-dimensional hydrogen concentration gradient field is reconstructed by combining gas stratification data to mark the hydrogen preferential enrichment area;

[0016] Based on the hydrogen concentration gradient field and the micro grain boundary structure parameters of the pipeline material, the initiation probability and potential propagation path of hydrogen embrittlement cracks in the hydrogen preferentially enriched area are simulated;

[0017] The hydrogen concentration gradient field, initiation probability, and potential expansion path are spatially mapped to generate a circumferential risk heat map of the pipeline, showing the location evolution trend of the risk core area in real time.

[0018] A photoluminescent quantum dot marker array is implanted in the risk core area marked on the risk heat map. By real-time monitoring of abnormal changes in the quantum dot luminescence characteristics, the crack initiation characteristic information is determined and the final monitoring report is generated.

[0019] Furthermore, the diffusion trajectory of hydrogen atoms in the metal lattice of the tube wall is captured in real time, and the three-dimensional hydrogen concentration gradient field is reconstructed in combination with the gas stratification data to mark the hydrogen preferential enrichment area, specifically:

[0020] The hydrogen permeation sensor array embedded in the inner wall of the pipe monitors the dynamic permeation behavior of hydrogen atoms in the metal lattice, records the hydrogen diffusion rate, penetration depth and local lattice strain data, and generates a time-series distribution map of the hydrogen atom migration path;

[0021] Synchronously collect hydrogen concentration distribution data at the top and bottom of the pipeline, combine it with the time series distribution diagram of the hydrogen atom migration path, and construct a dynamic hydrogen concentration field on the pipeline cross section through spatial interpolation;

[0022] Based on the dynamic hydrogen concentration field, a voxel modeling method is used to three-dimensionally superimpose the hydrogen concentration variation trend along the axial, radial and circumferential directions of the pipeline to generate a three-dimensional gradient field reflecting the enrichment degree of hydrogen atoms in the pipe wall metal;

[0023] According to the distribution of extreme concentration points in the three-dimensional gradient field and the mutation characteristics of the lattice strain data, the tube wall area where the hydrogen atom aggregation rate exceeds the critical threshold is delineated, and the hydrogen preferential enrichment area is obtained.

[0024] Furthermore, based on the hydrogen concentration gradient field combined with the microscopic grain boundary structure parameters of the pipeline material, the initiation probability and potential propagation path of hydrogen embrittlement cracks in the hydrogen preferentially enriched area are simulated, specifically:

[0025] Based on the microscopic grain boundary structure parameters of the pipeline material, the dislocation density distribution, phase interface type and grain boundary orientation difference data at the grain boundary are identified, and a grain boundary defect characteristic map including the grain connection path and grain boundary weakening tendency is established;

[0026] spatially matching the hydrogen concentration gradient field with a characteristic map of grain boundary defects to determine the enrichment coefficient of hydrogen atoms at different types of grain boundary defects, and generating a hydrogen-grain boundary coupling sensitivity distribution map reflecting the degree of hydrogen-induced grain boundary weakening;

[0027] Based on the hydrogen-grain boundary coupling sensitivity distribution map and the local stress field data of the tube wall, the hydrogen embrittlement crack initiation probability of each grain boundary area is determined, and a crack initiation probability distribution map containing probability quantization values is output;

[0028] Marking an area in the crack nucleation probability distribution map where the probability value exceeds a preset probability value threshold as a high probability initiation area;

[0029] According to the high-probability initiation area and combined with the grain connection path and grain boundary type data in the grain boundary defect characteristic map, the preferential main extension path of the crack along the weakened grain boundary and the potential bifurcation extension path affected by grain boundary anisotropy are simulated to obtain the potential extension path of hydrogen embrittlement cracks.

[0030] Furthermore, the hydrogen concentration gradient field, initiation probability, and potential expansion path are spatially mapped to generate a circumferential risk heat map of the pipeline, which displays the location evolution trend of the risk core area in real time. Specifically:

[0031] The hydrogen concentration gradient field, the probability of hydrogen embrittlement crack initiation in hydrogen-rich areas, and the potential propagation path data are aligned in time and space. A unified spatial mapping benchmark is established through pipeline coordinate system transformation to form a pipeline risk field matrix with multi-parameter superposition.

[0032] Based on the hydrogen embrittlement sensitivity coefficient and stress concentration factor of the pipeline material, adaptive weight coefficients are assigned to the three characteristic dimensions of hydrogen concentration gradient, initiation probability and potential expansion path to generate a weighted risk index distribution cloud map;

[0033] The three-dimensional pipeline surface is mapped into a two-dimensional unfolded surface, and the weighted risk index distribution cloud map is converted into a chromaticity-saturation coded thermal layer. The areas in the thermal layer with chromaticity values higher than the preset chromaticity threshold are marked as risk core areas.

[0034] By analyzing the migration patterns of the risk core areas through time series analysis, the motion vectors of the risk core areas are extracted, and a real-time evolution trend overlay map with directional arrows is generated.

[0035] Furthermore, a photoluminescent quantum dot marker array is implanted in the risk core area marked on the risk heat map. By real-time monitoring of abnormal changes in the quantum dot luminescence characteristics, the crack initiation characteristic information is determined and a final monitoring report is generated, specifically:

[0036] In the risk core area marked by the risk heat map, stress-sensitive photoluminescent quantum dots are embedded into the tube wall surface of the risk core area according to a preset lattice spacing, forming a quantum dot monitoring network that is consistent with the metal lattice orientation.

[0037] The fluorescence spectrum data of the quantum dot monitoring network is collected in real time through a distributed fiber optic spectroscopy system. The characteristic peak position shift, half-peak width change rate and fluorescence lifetime parameters of each quantum dot are recorded synchronously to build a quantum dot strain response time series database.

[0038] Based on the quantum dot strain response time series database, when three or more adjacent quantum dots are detected to have a characteristic peak position blue shift exceeding a preset threshold, it is determined to be a crack initiation characteristic signal, and the signal intensity and spatial distribution range of the crack initiation characteristic signal are recorded;

[0039] The spatial distribution of the crack initiation characteristic signal is compared with the corresponding risk core area in the risk heat map to determine the position deviation of the crack initiation, and a final monitoring report including signal strength, spatial distribution range and position deviation is output.

[0040] This invention addresses the technical deficiencies of the prior art and offers the following beneficial effects: At the system level, innovative pipeline structural design and material optimization effectively suppress hydrogen permeation and gas stratification, mitigating the risk of hydrogen embrittlement at the source. In terms of monitoring technology, a multi-scale collaborative monitoring system is constructed, enabling full-process monitoring from hydrogen atom diffusion tracking to crack initiation prediction. In particular, the integration of quantum dot labeling technology with traditional sensor networks effectively extends pipeline service life, improving the reliability of safety monitoring and maintenance efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, without paying any creative work, they can also obtain drawings of other embodiments based on these drawings.

[0042] Figure 1 This is a schematic diagram of the overall structure of the hydrogen blending pipeline system;

[0043] Figure 2 This is a structural diagram of the pipeline assembly in the hydrogen blending pipeline system;

[0044] Figure 3 This is a structural diagram of the support assembly in the hydrogen blending pipeline system;

[0045] Figure 4 This is a first structural schematic diagram of the operating assembly in the hydrogen blending pipeline system;

[0046] Figure 5 This is a second structural schematic diagram of the operating assembly in the hydrogen blending pipeline system;

[0047] Figure 6 This is a schematic diagram of the structure of the powertrain in the hydrogen blending pipeline system;

[0048] Figure 7 This is a structural schematic diagram of the power generation assembly in this hydrogen blending pipeline system. DETAILED DESCRIPTION

[0049] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments of the present application and the features therein can be combined with each other.

[0050] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0051] like Figure 1 As shown, the present invention consists of a pipeline assembly 1, a support assembly 2, an operating assembly 3, a power assembly 4, a battery pack 5, a system control cabinet 6 (including a DC box, an inverter, an AC distribution cabinet, a junction box, a rectifier and a motor driver), and a power generation assembly 7.

[0052] like Figure 2 As shown, the pipeline assembly 1 consists of a flange 101, bolt holes 102 (each flange 101 has 10), a pipeline 103, an air inlet 104 (with a sealing ring) (3 in number), and an air outlet 105 (with a sealing ring) (3 in number).

[0053] The flange 101 is welded and fixed to the pipe 103 , the bolt holes 102 are evenly distributed around the flange 101 , and the air inlet 104 and the air outlet 105 are evenly distributed around the pipe 103 .

[0054] like Figure 3As shown, the support assembly 2 consists of a locking nut 201 (5 in number), a support assembly ball 202 (several in number), a bearing limit frame 203 (5 in number), a support plate 204, a support assembly bearing outer ring 205, and a support assembly bearing inner ring 206.

[0055] Among them, the support plate 204 is welded and fixed to the pipe 103, the bearing limit frame 203 is welded and fixed to the support plate 204 evenly distributed around the circumference, the locking nut 201 and the bearing limit frame 203 are matched through threads, and the pressure of the locking nut 201 and the support assembly bearing outer ring 205 is adjusted by rotating the locking nut 201, the support assembly bearing outer ring 205 and the support assembly bearing inner ring 206 are matched with concentric axes, the support assembly bearing outer ring 205 and the support assembly bearing inner ring 206 transmit the clamping force through the support assembly ball 202, the support assembly bearing inner ring 206 is welded and fixed to the rotating sleeve 301, and the support assembly bearing outer ring 205, the support assembly bearing inner ring 206 and the support assembly ball 202 rotate relative to each other.

[0056] like Figure 4 、 Figure 5 As shown, the operating assembly 3 is composed of a rotating sleeve 301, an exhaust pipe 302 (3 in number), a fan housing 303 (3 in number), a fan control circuit 304, an air blowing pipe 305 (3 in number), a fan blade 306, a fan drive motor 307 (3 in number), and a fan drive motor support frame 308 (3 in number).

[0057] Among them, the rotating sleeve 301 and the pipeline 103 are coaxially matched, the rotating sleeve 301 and the pipeline 103 can rotate relative to each other, the exhaust pipe 302 is welded and fixed to the rotating sleeve 301, and a hole is opened at the corresponding position of the rotating sleeve 301, the exhaust pipe 302 is welded and fixed to the fan housing 303, the blowing pipe 305 is welded and fixed to the fan housing 303, the blowing pipe 305 is welded and fixed to the rotating sleeve 301, and a hole is opened at the corresponding position of the rotating sleeve 301, the fan drive motor support frame 308 is welded and fixed to the fan housing 303, the fan drive motor 307 is welded and fixed to the fan drive motor support frame 308, the fan blades 306 are fixed to the fan drive motor 307 by bolts, one end of the fan control circuit 304 is connected to the fan drive motor 307, and the other end is connected to the system control cabinet 6.

[0058] It should be noted that the sealing rings of the air inlet 104 and the air outlet 105 of the pipeline 103 are of corrugated shape, which can achieve the purpose of sealing between the pipeline 103 and the rotating sleeve 301, and can also greatly reduce the friction resistance of the relative rotation between the pipeline 103 and the rotating sleeve 301; the cross-sectional area of the air inlet 104 is larger than that of the air outlet 105, and the diameter of the air extraction pipe 302 is larger than that of the air blowing pipe 305, so as to increase the air flow velocity at the air outlet 105 and achieve sufficient mixing of natural gas and hydrogen in the pipeline 103; the angle between the axis of the air extraction pipe 302 and the axis of the rotating sleeve 301 is less than 45°, so as to ensure that the conveying gas enters the air extraction pipe 302 smoothly and increase the air intake of the air extraction pipe 302; the angle between the axis of the air blowing pipe 305 and the axis of the rotating sleeve 301 is greater than 60°, so as to achieve sufficient mixing of natural gas and hydrogen in the pipeline 103.

[0059] like Figure 6 As shown, the power assembly 4 consists of a motor base 401, a bearing seat 402, a power assembly bearing outer ring 403, a power assembly ball 404, a power assembly bearing inner ring 405, a transmission worm gear 406, a transmission worm 407, motor fixing bolts 408 (4 in number), a power assembly drive motor 409, and a motor control circuit 410.

[0060] Among them, the motor base 401 is welded and fixed to the pipeline 103, the bearing seat 402 is welded and fixed to the motor base 401, the powertrain bearing outer ring 403 is fixed to the bearing seat 402, the powertrain bearing outer ring 403 and the powertrain ball 404 are rolling fit, the powertrain ball 404 and the powertrain bearing inner ring 405 are rolling fit, the powertrain bearing inner ring 405 is fixed to the transmission worm 407, the transmission worm 407 and the output shaft of the powertrain drive motor 409 are coaxially fixed and rotate synchronously, the powertrain drive motor 409 is fixed to the motor base 401 by the motor fixing bolt 408, one end of the motor control circuit 410 is connected to the powertrain drive motor 409, and the other end is connected to the system control cabinet 6, the transmission worm gear 406 is coaxially fixed with the rotating sleeve 301, and the transmission worm gear 406 is engaged with the transmission worm 407.

[0061] like Figure 7 As shown, the power generation assembly 7 consists of wind turbine blades 701 (3 in number), photovoltaic panels 702 (63 in number), a wind turbine main shaft 703, a wind turbine generator set 704 (including a yaw system), an anemometer 705, a wind turbine tower 706, tower fixing bolts 707 (10 in number), a fixing sleeve 708, a tower support frame 709, and a wind power photovoltaic cable 710.

[0062] Among them, the photovoltaic panels 702 are respectively fixed to the windward and leeward sides of the wind turbine blades 701, the wind turbine blades 701 are fixed to the wind turbine main shaft 703, the wind turbine main shaft 703 is installed on the wind turbine generator set 704, the anemometer 705 is installed on the wind turbine generator set 704, the wind turbine generator set 704 is installed on the wind turbine tower 706 through a rotating pair, the wind turbine tower 706 is installed on the tower support frame 709 through the tower fixing bolts 707, the tower support frame 709 is welded and fixed to the fixed sleeve 708, and the fixed sleeve 708 is welded and fixed to the pipeline 103, one end of the wind power photovoltaic cable 710 is connected to the photovoltaic panel 702 and the wind turbine generator set, and the other end is connected to the system control cabinet 6; the battery pack 5 is fixed to the tower support frame 709, one end of the battery pack cable 501 is connected to the battery pack 5, and the other end is connected to the system control cabinet 6.

[0063] It should be noted that the photovoltaic panels 702 installed on the wind turbine blades 701 can realize the integrated power generation of photovoltaic and wind energy, greatly improving the power generation efficiency; the photovoltaic panels 702 installed on the wind turbine blades 701 are not of the same specifications and models, and photovoltaic panels of different specifications and models need to be adapted according to the wing surface dimensions along the span of the windward and leeward sides of the blades.

[0064] Working principle of this system: solar energy is converted into direct current through photovoltaic panels 702, and the electric energy is stored in battery pack 5 through junction box and DC box in system control cabinet 6; wind energy is converted into alternating current by driving wind turbine generator set 704 through wind turbine blades 701, and the electric energy is stored in battery pack 5 through rectifier in system control cabinet 6; the electric energy stored in battery pack 5 is used by fan drive motor 307 in operating assembly 3 and power assembly drive motor 409 in power assembly 4; when the system is started, power assembly drive motor 409 drives transmission worm 407 to rotate, transmission worm 407 drives transmission worm gear 406 to rotate, and transmission worm gear 406 drives rotating sleeve 301 to rotate; when the mouth of exhaust pipe 302 is aligned with air inlet 104 and the mouth of blowing pipe 305 is aligned with air outlet 105, power assembly drive motor 409 stops and fan drive motor 307 drives the fan blades 306 to rotate, and the hydrogen-doped gas in the pipeline 103 enters the exhaust pipe 302 from the air inlet 104, passes through the fan housing 303 and the blowing pipe 305 in turn, and enters the pipeline 103 again through the air outlet 105, breaking the laminar flow state of the gas in the hydrogen-doped pipe, avoiding stratification of hydrogen and natural gas, promoting the mixed transportation of hydrogen and natural gas, and preventing the pipeline from "hydrogen embrittlement"; when the system is shut down, the power assembly drive motor 409 rotates in the opposite direction, and the speed of the fan drive motor 307 gradually decreases. When the pipe opening of the exhaust pipe 302 is completely staggered with the air inlet 104, and the pipe opening of the blowing pipe 305 is completely staggered with the air outlet 105, the power assembly drive motor 409 and the fan drive motor 307 are both shut down. This process prevents the hydrogen-doped gas from remaining in the exhaust pipe 302, the fan housing 303 and the blowing pipe 305, and prevents the pipeline from "hydrogen embrittlement".

[0065] The transmission relationship during the system start-up and shutdown process is as follows:

[0066] Solar energy is converted into direct current (DC) by photovoltaic panels 702. This DC is then transmitted to the system control cabinet 6 via wind-powered photovoltaic cables 710. The energy passes through the combiner box, DC box, and battery cables 501 within the system control cabinet 6, and is stored in the battery bank 5. Anemometers 705 capture real-time wind speed and direction. The yaw system within wind turbine generator set 704 rotates the generator set around the wind turbine tower 706, adjusting the angle between the wind turbine blades 701 and the wind direction to achieve efficient utilization of wind energy. Natural wind, through wind blades 701, drives wind turbine generator set 704, converting wind energy into alternating current (AC). This AC energy is then transmitted to the system control cabinet 6 via wind-powered photovoltaic cables 710. The AC energy passes through the rectifier and battery cables 501 within the system control cabinet 6, and is stored in the battery bank 5.

[0067] When the system starts, the battery pack 5 transmits electric energy to the system control cabinet 6 through the battery pack cable 501, and the DC power is converted into AC power through the inverter. The powertrain drive motor 409 is started through the motor driver and the motor control circuit 410. The powertrain drive motor 409 drives the transmission worm 407 to rotate, the transmission worm 407 drives the transmission worm wheel 406 to rotate, the transmission worm wheel 406 drives the rotating sleeve 301 to rotate, the transmission worm 407 drives the powertrain bearing inner ring 405 to rotate, and the rotating sleeve 301 drives the support assembly The inner ring 206 of the bearing rotates. When the pipe opening of the exhaust pipe 302 is aligned with the air inlet 104 and the pipe opening of the blowing pipe 305 is aligned with the air outlet 105, the power assembly drive motor 409 stops, and the fan drive motor 307 is started through the motor driver and the fan control circuit 304. The fan drive motor 307 drives the fan blades 306 to rotate, and the hydrogen-mixed gas in the pipeline 103 enters the exhaust pipe 302 from the air inlet 104, passes through the fan housing 303 and the blowing pipe 305 in sequence, and enters the pipeline 103 again through the air outlet 105.

[0068] When the system is shut down, the battery pack 5 transmits electric energy to the system control cabinet 6 through the battery pack cable 501, and the DC power is converted into AC power through the inverter. The powertrain drive motor 409 is started to rotate in the opposite direction through the motor driver and the motor control circuit 410. The powertrain drive motor 409 drives the transmission worm 407 to rotate, the transmission worm 407 drives the transmission worm gear 406 to rotate, the transmission worm gear 406 drives the rotating sleeve 301 to rotate, the transmission worm 407 drives the powertrain bearing inner ring 405 to rotate, and the rotating sleeve 301 drives the support assembly bearing inner ring 206 to rotate. At the same time, the speed of the fan drive motor 307 gradually decreases. When the pipe opening of the exhaust pipe 302 is completely offset from the air inlet 104 and the pipe opening of the blowing pipe 305 is completely offset from the air outlet 105, the powertrain drive motor 409 and the fan drive motor 307 are both shut down.

[0069] It should also be noted that when the system is started, after the pipe opening of the exhaust pipe 302 is aligned with the air inlet 104 and the pipe opening of the blowing pipe 305 is aligned with the air outlet 105, the fan drive motor 307 is restarted; when the system is shut down, while the power assembly drive motor 409 rotates in the opposite direction, the speed of the fan drive motor 307 gradually decreases, and the power assembly drive motor 409 and the fan drive motor 307 are shut down at the same time to prevent hydrogen-mixed gas from remaining in the exhaust pipe 302, the fan housing 303 and the blowing pipe 305.

[0070] A second aspect of the present invention discloses a method for monitoring performance degradation of a crack-resistant hydrogen-doped pipeline system, which is applicable to any of the aforementioned crack-resistant hydrogen-doped pipeline systems and comprises the following steps:

[0071] The diffusion trajectory of hydrogen atoms in the metal lattice of the tube wall is captured in real time, and the three-dimensional hydrogen concentration gradient field is reconstructed by combining gas stratification data to mark the hydrogen preferential enrichment area;

[0072] Based on the hydrogen concentration gradient field and the micro grain boundary structure parameters of the pipeline material, the initiation probability and potential propagation path of hydrogen embrittlement cracks in the hydrogen preferentially enriched area are simulated;

[0073] The hydrogen concentration gradient field, initiation probability, and potential expansion path are spatially mapped to generate a circumferential risk heat map of the pipeline, showing the location evolution trend of the risk core area in real time.

[0074] A photoluminescent quantum dot marker array is implanted in the risk core area marked on the risk heat map. By real-time monitoring of abnormal changes in the quantum dot luminescence characteristics, the crack initiation characteristic information is determined and the final monitoring report is generated.

[0075] It should be noted that this method solves the technical problem of difficulty in timely and accurate monitoring of hydrogen embrittlement cracks caused by hydrogen stratification in hydrogen-doped pipelines. By establishing a comprehensive monitoring system from hydrogen diffusion tracking to crack prediction, it achieves early warning and precise location of hydrogen embrittlement risks, proactively captures precursors to crack initiation, improves the accuracy of hydrogen embrittlement risk assessments, and enables intuitive verification of microcracks, forming a closed prediction-verification loop that provides a reliable basis for subsequent maintenance decisions.

[0076] Furthermore, the diffusion trajectory of hydrogen atoms in the metal lattice of the tube wall is captured in real time, and the three-dimensional hydrogen concentration gradient field is reconstructed in combination with the gas stratification data to mark the hydrogen preferential enrichment area, specifically:

[0077] The hydrogen permeation sensor array embedded in the inner wall of the pipe monitors the dynamic permeation behavior of hydrogen atoms in the metal lattice, records the hydrogen diffusion rate, penetration depth and local lattice strain data, and generates a time-series distribution map of the hydrogen atom migration path;

[0078] Synchronously collect hydrogen concentration distribution data at the top and bottom of the pipeline, combine it with the time series distribution diagram of the hydrogen atom migration path, and construct a dynamic hydrogen concentration field on the pipeline cross section through spatial interpolation;

[0079] Based on the dynamic hydrogen concentration field, a voxel modeling method is used to three-dimensionally superimpose the hydrogen concentration variation trend along the axial, radial and circumferential directions of the pipeline to generate a three-dimensional gradient field reflecting the enrichment degree of hydrogen atoms in the pipe wall metal;

[0080] According to the distribution of extreme concentration points in the three-dimensional gradient field and the mutation characteristics of the lattice strain data, the tube wall area where the hydrogen atom aggregation rate exceeds the critical threshold is delineated, and the hydrogen preferential enrichment area is obtained.

[0081] A specific embodiment of this technical solution is now provided: a hydrogen permeation sensor array is arranged in a ring with a spacing of 20mm on the inner wall of an X80 steel hydrogen-doped pipeline. Each sensor unit contains a Pd / Ni composite thin film hydrogen sensitive layer and a micro strain gauge, which outputs hydrogen permeation flux and lattice microstrain in real time. A gas sampling port is set every 5 meters along the axial direction of the pipeline, and a laser spectrometer is used to collect the hydrogen gas volume fraction at the top and bottom at a frequency of 1Hz. After receiving the above data, the central processor compares the pipe wall permeation data with the gas concentration in the pipe at a rate of 0.1mm. 3 Voxel units are spatially correlated. When the hydrogen concentration gradient of three or more consecutive voxel units in a region exceeds 0.5 ppm / mm and is accompanied by a sudden increase in lattice strain of 50 με, it is determined to be a region of preferential hydrogen enrichment. In this embodiment, the sensor is fixed using a vacuum brazing process to ensure atomic-level contact with the metal lattice of the tube wall.

[0082] In summary, this step achieves accurate identification of hydrogen-enriched areas in pipelines through multi-dimensional data fusion, and can dynamically track the microscopic diffusion behavior of hydrogen atoms in the metal lattice in real time, breaking through the spatiotemporal resolution limitations of traditional detection methods. By combining the hydrogen distribution inside and outside the pipe with the lattice strain data, a three-dimensional gradient field reflecting the actual hydrogen permeation state is constructed. The final marking result of the hydrogen preferentially enriched area provides an accurate spatial positioning basis for subsequent hydrogen embrittlement risk assessment.

[0083] Furthermore, based on the hydrogen concentration gradient field combined with the microscopic grain boundary structure parameters of the pipeline material, the initiation probability and potential propagation path of hydrogen embrittlement cracks in the hydrogen preferentially enriched area are simulated, specifically:

[0084] Based on the microscopic grain boundary structure parameters of the pipeline material, the dislocation density distribution, phase interface type and grain boundary orientation difference data at the grain boundary are identified, and a grain boundary defect characteristic map including the grain connection path and grain boundary weakening tendency is established;

[0085] spatially matching the hydrogen concentration gradient field with a characteristic map of grain boundary defects to determine the enrichment coefficient of hydrogen atoms at different types of grain boundary defects, and generating a hydrogen-grain boundary coupling sensitivity distribution map reflecting the degree of hydrogen-induced grain boundary weakening;

[0086] The calculation formula of the enrichment coefficient is:

[0087] K=K0×(1+α×ΔC)

[0088] Where K is the enrichment coefficient; ΔC is the domain hydrogen concentration gradient vector (obtained by spatial matching); α is the material-related proportional coefficient (such as 0.05-0.08 for X80 steel); K0 is the benchmark hydrogen enrichment coefficient, which is 1.2-1.5.

[0089] Based on the hydrogen-grain boundary coupling sensitivity distribution map and the local stress field data of the tube wall, the hydrogen embrittlement crack initiation probability of each grain boundary area is determined, and a crack initiation probability distribution map containing probability quantization values is output;

[0090] Among them, the calculation formula for the probability of hydrogen embrittlement crack initiation is:

[0091]

[0092] Where P is the probability of hydrogen embrittlement crack initiation; S is the hydrogen-grain boundary coupling sensitivity; γ is the stress sensitivity coefficient, which is 0.15-0.25 for X80 steel; K is the hydrogen enrichment coefficient; β is the dislocation density correction factor; σ is the local stress value in the grain boundary area; σ0 is the material reference stress, such as 200 MPa for X80 steel.

[0093] Marking an area in the crack nucleation probability distribution map where the probability value exceeds a preset probability value threshold as a high probability initiation area;

[0094] According to the high-probability initiation area and combined with the grain connection path and grain boundary type data in the grain boundary defect characteristic map, the preferential main extension path of the crack along the weakened grain boundary and the potential bifurcation extension path affected by grain boundary anisotropy are simulated to obtain the potential extension path of hydrogen embrittlement cracks.

[0095] The specific embodiment of the technical solution is provided as follows: X80 steel pipe samples are subjected to EBSD analysis to obtain parameters such as grain size (20-50μm), grain boundary orientation difference (15°-45°) and Σ3 phase boundary ratio (≥40%), and to establish a dislocation density (105-107 / cm 2) grain boundary feature database. The hydrogen concentration gradient field data (resolution 0.1mm) is aligned with the grain boundary features. When the hydrogen concentration in the high-angle grain boundary (>15°) region reaches 10ppm and the local stress exceeds 300MPa, the hydrogen enrichment coefficient K at that location is determined to be ≥1.5. The hydrogen enrichment coefficient of each region is then visualized as a two-dimensional distribution map to obtain a hydrogen-grain boundary coupling sensitivity distribution map. When the probability of grain initiation P in a certain area is greater than 0.7, it is marked as a high-risk area (high probability initiation area). Then, through ABAQUS / CAE software, combined with its extended finite element method (XFEM) module, the grain boundary feature data is imported through a custom user subroutine (UEL) to simulate the crack propagation behavior along the weakened grain boundary. In specific implementation, the grain boundary defect feature map data must first be converted into an input format that can be recognized by the software (such as ABAQUS's .inp file). When setting the material parameters, the following must be included: the curve of the grain boundary energy changing with orientation difference; the grain boundary bonding strength attenuation coefficient under the influence of hydrogen; and the critical shear stress of each slip system. By setting crack growth criteria (such as the maximum circumferential stress criterion) and bifurcation conditions (such as a local stress intensity factor ratio greater than 0.5), the software automatically outputs visualizations of the main crack path and potential bifurcation paths. Simulation results can be exported as vector diagrams containing position coordinates and propagation directions through the post-processing module for comparison and verification with experimental observations.

[0096] In summary, this step achieves accurate prediction of hydrogen embrittlement crack initiation and propagation behavior by integrating the hydrogen concentration field with the material microstructural characteristics. It can accurately identify the locations of microscopic defects in pipeline materials that are most susceptible to hydrogen embrittlement and predict high-risk areas where cracks will preferentially initiate. By analyzing the grain boundary network characteristics, the possible propagation path and bifurcation trend of cracks can be judged in advance, providing a scientific basis for pipeline safety assessment and improving the accuracy of hydrogen embrittlement risk warning.

[0097] Furthermore, the hydrogen concentration gradient field, initiation probability, and potential expansion path are spatially mapped to generate a circumferential risk heat map of the pipeline, which displays the location evolution trend of the risk core area in real time. Specifically:

[0098] The hydrogen concentration gradient field, the probability of hydrogen embrittlement crack initiation in hydrogen-rich areas, and the potential propagation path data are aligned in time and space. A unified spatial mapping benchmark is established through pipeline coordinate system transformation to form a pipeline risk field matrix with multi-parameter superposition.

[0099] Based on the hydrogen embrittlement sensitivity coefficient and stress concentration factor of the pipeline material, adaptive weight coefficients are assigned to the three characteristic dimensions of hydrogen concentration gradient, initiation probability and potential expansion path to generate a weighted risk index distribution cloud map;

[0100] The three-dimensional pipeline surface is mapped into a two-dimensional unfolded surface, and the weighted risk index distribution cloud map is converted into a chromaticity-saturation coded thermal layer. The areas in the thermal layer with chromaticity values higher than the preset chromaticity threshold are marked as risk core areas.

[0101] By analyzing the migration patterns of the risk core areas through time series analysis, the motion vectors of the risk core areas are extracted, and a real-time evolution trend overlay map with directional arrows is generated.

[0102] A specific embodiment of this technical solution is provided. For a DN500 X80 steel hydrogen-doped pipeline, a cylindrical coordinate system with the pipeline axis as the Z axis and a circumferential angle of θ was established. The hydrogen concentration gradient field (resolution 1 mm × 1°), crack initiation probability map (0.1° accuracy), and expansion path data (0.5 mm spacing) were uniformly sampled into a 100 × 360 grid matrix. The hydrogen concentration gradient was assigned a weight of 0.4, the initiation probability a weight of 0.35, and the expansion path a weight of 0.25 (specific weights can be adjusted adaptively based on accuracy requirements). The pipeline surface was unfolded into a rectangular plane using conformal mapping, and the risk index was encoded using the HSV color space (hue 0-120° corresponds to a risk value of 0-1, with saturation fixed at 100%). When a region's hue value exceeds 90° (red) and continues to deepen for more than three consecutive frames, it is identified as a risk core area, and its center of mass movement vector is determined (e.g., 0.2 mm / min at 30°).

[0103] In summary, this step achieves intuitive dynamic monitoring of the safety status of hydrogen-blended pipelines through multi-dimensional risk data fusion and visualization processing. It integrates multiple key parameters of hydrogen embrittlement risk into a unified visualization expression, and intuitively presents the real-time distribution of high-risk areas in the pipeline in the form of a heat map. It can accurately reflect the synergistic effect of different risk factors, achieve non-destructive display of the risk status of the pipeline in all directions, predict the evolution direction of risk areas in advance, and provide an intuitive basis for pipeline maintenance decisions.

[0104] Furthermore, a photoluminescent quantum dot marker array is implanted in the risk core area marked on the risk heat map. By real-time monitoring of abnormal changes in the quantum dot luminescence characteristics, the crack initiation characteristic information is determined and a final monitoring report is generated, specifically:

[0105] In the risk core area marked by the risk heat map, stress-sensitive photoluminescent quantum dots are embedded into the tube wall surface of the risk core area according to a preset lattice spacing, forming a quantum dot monitoring network that is consistent with the metal lattice orientation.

[0106] The fluorescence spectrum data of the quantum dot monitoring network is collected in real time through a distributed fiber optic spectroscopy system. The characteristic peak position shift, half-peak width change rate and fluorescence lifetime parameters of each quantum dot are recorded synchronously to build a quantum dot strain response time series database.

[0107] Based on the quantum dot strain response time series database, when three or more adjacent quantum dots are detected to have a characteristic peak position blue shift exceeding a preset threshold, it is determined to be a crack initiation characteristic signal, and the signal intensity and spatial distribution range of the crack initiation characteristic signal are recorded;

[0108] The spatial distribution of the crack initiation characteristic signal is compared with the corresponding risk core area in the risk heat map to determine the position deviation of the crack initiation, and a final monitoring report including signal strength, spatial distribution range and position deviation is output.

[0109] A specific embodiment of this technical solution is now provided: the fluorescence spectrum of each quantum dot is collected at a frequency of 10 Hz by an 8-channel fiber optic spectrometer (resolution 0.1 nm). When the peak position of three adjacent quantum dots simultaneously shows a blue shift of ≥ 2 nm, a crack alarm is triggered.

[0110] In summary, this step utilizes the ultra-high sensitivity of quantum dots to microscopic strain to achieve in-situ capture with nanometer-level precision at the early stages of crack initiation, effectively distinguishing hydrogen-induced lattice distortion from actual crack initiation. The final monitoring report analyzes the spatial matching between the predicted results and the measured data, providing a reliable verification basis for pipeline safety assessment and improving the accuracy and credibility of hydrogen embrittlement monitoring.

[0111] During actual operation, the monitoring method further includes the following steps:

[0112] When the quantum dot monitoring network detects that the characteristic peak position blue shift of three or more adjacent quantum dots exceeds the preset threshold at the same time, it is determined to be a valid crack signal, and the coordinates of the crack starting point and the expansion direction angle are extracted;

[0113] Based on the crack length and direction parameters, the electromagnetic coil array in the corresponding area is activated to generate a rotating gradient magnetic field that matches the crack direction. The magnetic field intensity increases with the crack depth. The rotating gradient magnetic field forms a dynamic magnetic vortex core at the crack tip, and the vortex rotation frequency is proportional to the crack growth rate.

[0114] The embedded ferrofluid microcapsules are magnetized and aligned under the action of magnetic vortices. When the angle between the magnetic moment direction of the microcapsules and the tangential direction of the crack path is detected to be less than a preset angle threshold, pulsed magnetic field acceleration is activated to drive the microcapsules to align linearly along the main direction of the crack, forming a single-layer tightly arranged repair chain.

[0115] The crack width data fed back by the quantum dots is compared in real time with the microcapsule particle size distribution: when the crack width exceeds the average diameter of the microcapsules for a preset time, an alternating magnetic field with a resonant frequency of f0 (f0 = the natural frequency of the microcapsule shell material) is applied; if the crack width shrinks below the preset width threshold, a static magnetic field is switched to maintain the microcapsule positioning.

[0116] Among them, ferrofluid microcapsules refer to core-shell structured functional materials formed by magnetic nanoparticles dispersed in a carrier liquid. The core is a ferrofluid with magnetic response, and the shell is a rupturable polymer protective layer. Under the action of an external magnetic field, it can move in a directed manner and release repair substances at specific locations.

[0117] It should be noted that, also using an X80 steel pipeline as an example, a 20×20 quantum dot array (200μm spacing) was implanted in a high-risk area on the inner wall of the X80 steel pipeline. When three adjacent quantum dots simultaneously detected a characteristic peak blue shift ≥3nm, it was determined to be a valid crack signal and the coordinates (e.g., X=35mm, Y=120mm) and the extension direction angle (e.g., 45°) were recorded. An 8×8 electromagnetic coil array (single coil diameter 5mm) was activated in the crack area, generating a gradient magnetic field with an intensity gradient of 0.1T / mm and a rotation frequency of 5Hz (maximum intensity 0.8T). Under the action of the magnetic field, the pre-embedded Fe3O4@SiO2 microcapsules (particle size 50-80μm) formed a single-layer arranged chain along the crack direction (error angle <10°). When the quantum dot monitor detects a crack width greater than 75μm for 60 seconds, a 28kHz alternating magnetic field is applied to trigger the microcapsule shell to rupture. If the width shrinks to less than 50μm, a 0.5T static magnetic field is applied to fix the microcapsule in place. This solution has been tested to repair a 300μm crack within 30 minutes.

[0118] In summary, in this embodiment, by combining magnetic field control and ferrofluid repair technology, intelligent identification and active repair of pipeline cracks are achieved. It can accurately capture the microscopic signals of crack initiation and track the expansion dynamics in real time, forming a closed-loop protection system from crack detection to autonomous repair, thereby improving the accuracy and timeliness of pipeline self-repair.

[0119] During actual operation, the monitoring method further includes the following steps:

[0120] By discretizing the hydrogen concentration gradient field vector distribution, a three-dimensional gridded manifold structure covering the pipe wall thickness is constructed. The hydrogen diffusion vector direction at each grid node is mapped to a tangent vector in the manifold tangent bundle space, forming a vector field principal bundle with topological constraints.

[0121] The curl tensor distribution of the vector field is calculated based on the connection coefficient of the manifold tangent bundle, and the curl zero point is identified as the potential intersection point of the manifold knot. The difference value of the principal curvature direction angle at each intersection point is extracted using covariant differential operation to generate the initial knot projection map.

[0122] The initial knot projection graph is simplified by performing a Reedmeister shift operation to eliminate the topological redundancy caused by iso-trace equivalence while retaining the knot winding number characteristics in the hydrogen concentration gradient mutation region, ultimately obtaining a standardized three-dimensional knot invariant set.

[0123] For each critical point in the set of normalized knot invariants, the root distribution characteristics of the Alexander polynomial in its neighborhood on the complex plane are determined. When the sign flip of the highest-order coefficient of the polynomial or the sudden change in the number of repeated roots is detected, it is marked as the trigger point of the topological phase transition of the crack bifurcation.

[0124] The position coordinates of the topological phase transition trigger point are matched with the microscopic grain boundary slip direction by Lie group symmetry. By constructing a homology class mapping of the stress intensity factor at the crack tip, a Grassmann manifold probability distribution model of the bifurcation path is established, and a weighted probability cloud map of the crack propagation path is output.

[0125] The probability cloud map is fused with the real-time risk heat map by tensor product to generate a bifurcation evolution warning signal with temporal and spatial correlation, and the probability weight distribution of the potential crack propagation path in the pipeline circumferential risk map is dynamically corrected.

[0126] It should be noted that, taking the X80 steel pipe as an example, for the X80 steel pipe (wall thickness 15mm), the hydrogen concentration gradient field is discretized into a voxel grid of 0.1mm×0.1mm×0.05mm, and the hydrogen diffusion vector at each grid node (range 0-10ppm / mm) is converted into the tangent vector of the manifold tangent bundle space (accuracy 0.01°) through exponential mapping. When determining the curl tensor field, in the hydrogen concentration mutation region (gradient change rate > 5ppm / mm 2 ) identifies curl zeros, and marks knot intersections where the principal curvature angles of their neighbors differ by more than 30° (spatial resolution 50 μm). After simplification using three-dimensional Ridgemeister shifts, standardized knots with a winding number ≥ 3 (such as trefoil knots) are retained. A bifurcation warning is triggered when the Alexander polynomial (degree ≥ 4) at a critical point exhibits a triple root on the unit circle in the complex plane.

[0127] In summary, by mapping the hydrogen concentration gradient field into a topological manifold knot invariant and combining Alexander polynomial mutation detection with Lie group symmetry matching, the topological phase transition prediction of the crack bifurcation path is achieved, which effectively breaks through the limitations of traditional empirical models, accurately captures the critical mutation characteristics of crack bifurcation under complex microstructures, and improves the spatiotemporal correlation and dynamic warning reliability of hydrogen embrittlement crack propagation prediction.

[0128] The above are only specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field can easily think of changes or replacements within the technical scope disclosed by the present invention, which should be covered by the scope of protection of the present invention.

Claims

1. A crack-resistant hydrogen-doped pipeline system, comprising a pipeline assembly, a support assembly, an operating assembly, a power assembly, a battery pack, a system control cabinet, and a power generation assembly, characterized in that: The pipeline assembly consists of a flange, bolt holes, a pipeline, an air inlet and an air outlet, and the air inlet and the air outlet are circumferentially arranged on the pipeline; The operating assembly consists of a rotating sleeve, an exhaust pipe, a fan housing, a fan control circuit, an air blowing pipe, a fan blade, a fan drive motor and a fan drive motor support frame; the exhaust pipe is welded and fixed to the rotating sleeve; the exhaust pipe is welded and fixed to the fan housing, and the air blowing pipe is welded and fixed to the fan housing; the air blowing pipe is welded and fixed to the rotating sleeve; the fan drive motor support frame is welded and fixed to the fan housing, and the fan drive motor is welded and fixed to the fan drive motor support frame; The power assembly consists of a motor base, a bearing seat, a power assembly bearing outer ring, a power assembly ball, a power assembly bearing inner ring, a transmission worm gear, a transmission worm, a power assembly drive motor and a motor control circuit; the motor base is welded and fixed to the pipeline, the bearing seat is welded and fixed to the motor base, the power assembly bearing outer ring is installed on the bearing seat, and the power assembly drive motor is fixed to the motor base.

2. The anti-cracking hydrogen-doped pipeline system according to claim 1, characterized in that: The support assembly consists of a locking nut, a support assembly ball, a bearing limit frame, a support plate, a support assembly bearing outer ring and a support assembly bearing inner ring. The support plate is welded and fixed to the pipe. The bearing limit frames are evenly distributed around the circumference and welded to the support plate. The support assembly bearing inner ring is welded and fixed to the rotating sleeve. The support assembly bearing outer ring and the support assembly bearing inner ring rotate relative to the support assembly ball.

3. The anti-cracking hydrogen-doped pipeline system according to claim 1, characterized in that: The power generation assembly consists of wind turbine blades, photovoltaic panels, a wind turbine main shaft, a wind turbine generator set, an anemometer, a wind turbine tower, a fixed sleeve, a tower support frame and a wind power photovoltaic cable; the photovoltaic panels are respectively fixed to the windward and leeward sides of the wind turbine blades, the wind turbine generator set is installed on the wind turbine tower through a rotating pair, the wind turbine tower is fixedly installed on the tower support frame, the tower support frame is welded and fixed to the fixed sleeve, and the fixed sleeve is welded and fixed to the pipeline.

4. The anti-cracking hydrogen-doped pipeline system according to claim 1, characterized in that: The air inlet and air outlet of the pipeline are provided with sealing rings, and the shape of the sealing rings is corrugated; the cross-sectional area of the air inlet is larger than that of the air outlet, and the diameter of the exhaust pipe is larger than that of the air blowing pipe, so as to increase the air flow velocity at the air outlet and ensure that the natural gas and hydrogen in the pipeline are fully mixed.

5. The anti-cracking hydrogen-doped pipeline system according to claim 1, characterized in that: The included angle between the axis of the exhaust pipe and the axis of the rotating sleeve is less than 45°, so that the conveying gas can enter the exhaust pipe smoothly and increase the air intake of the exhaust pipe; the included angle between the axis of the blowing pipe and the axis of the rotating sleeve is greater than 60°, so that the natural gas and hydrogen in the pipeline are fully mixed.

6. A method for monitoring performance degradation of a crack-resistant hydrogen-doped pipeline system, applied to the crack-resistant hydrogen-doped pipeline system according to any one of claims 1 to 5, characterized in that: The following steps are involved: The diffusion trajectory of hydrogen atoms in the metal lattice of the tube wall is captured in real time, and the three-dimensional hydrogen concentration gradient field is reconstructed by combining gas stratification data to mark the hydrogen preferential enrichment area; Based on the hydrogen concentration gradient field and the micro grain boundary structure parameters of the pipeline material, the initiation probability and potential propagation path of hydrogen embrittlement cracks in the hydrogen preferentially enriched area are simulated; The hydrogen concentration gradient field, initiation probability, and potential expansion path are spatially mapped to generate a circumferential risk heat map of the pipeline, showing the location evolution trend of the risk core area in real time. A photoluminescent quantum dot marker array is implanted in the risk core area marked on the risk heat map. By real-time monitoring of abnormal changes in the quantum dot luminescence characteristics, the crack initiation characteristic information is determined and the final monitoring report is generated.

7. The method for monitoring performance degradation of a crack-resistant hydrogen-doped pipeline system according to claim 6, characterized in that: The diffusion trajectory of hydrogen atoms in the metal lattice of the tube wall is captured in real time. The three-dimensional hydrogen concentration gradient field is reconstructed by combining the gas stratification data to mark the hydrogen preferential enrichment area, specifically: The hydrogen permeation sensor array embedded in the inner wall of the pipe monitors the dynamic permeation behavior of hydrogen atoms in the metal lattice, records the hydrogen diffusion rate, penetration depth and local lattice strain data, and generates a time-series distribution map of the hydrogen atom migration path; Synchronously collect hydrogen concentration distribution data at the top and bottom of the pipeline, combine it with the time series distribution diagram of the hydrogen atom migration path, and construct a dynamic hydrogen concentration field on the pipeline cross section through spatial interpolation; Based on the dynamic hydrogen concentration field, a voxel modeling method is used to three-dimensionally superimpose the hydrogen concentration variation trend along the axial, radial and circumferential directions of the pipeline to generate a three-dimensional gradient field reflecting the enrichment degree of hydrogen atoms in the pipe wall metal; According to the distribution of extreme concentration points in the three-dimensional gradient field and the mutation characteristics of the lattice strain data, the tube wall area where the hydrogen atom aggregation rate exceeds the critical threshold is delineated, and the hydrogen preferential enrichment area is obtained.

8. The method for monitoring performance degradation of a crack-resistant hydrogen-doped pipeline system according to claim 6, characterized in that: Based on the hydrogen concentration gradient field and the microscopic grain boundary structure parameters of the pipeline material, the initiation probability and potential propagation path of hydrogen embrittlement cracks in the hydrogen preferentially enriched area are simulated, specifically: Based on the microscopic grain boundary structure parameters of the pipeline material, the dislocation density distribution, phase interface type and grain boundary orientation difference data at the grain boundary are identified, and a grain boundary defect characteristic map including the grain connection path and grain boundary weakening tendency is established; spatially matching the hydrogen concentration gradient field with a characteristic map of grain boundary defects to determine the enrichment coefficient of hydrogen atoms at different types of grain boundary defects, and generating a hydrogen-grain boundary coupling sensitivity distribution map reflecting the degree of hydrogen-induced grain boundary weakening; Based on the hydrogen-grain boundary coupling sensitivity distribution map and the local stress field data of the tube wall, the hydrogen embrittlement crack initiation probability of each grain boundary area is determined, and a crack initiation probability distribution map containing probability quantization values is output; Marking an area in the crack nucleation probability distribution map where the probability value exceeds a preset probability value threshold as a high probability initiation area; According to the high-probability initiation area and combined with the grain connection path and grain boundary type data in the grain boundary defect characteristic map, the preferential main extension path of the crack along the weakened grain boundary and the potential bifurcation extension path affected by grain boundary anisotropy are simulated to obtain the potential extension path of hydrogen embrittlement cracks.

9. The method for monitoring performance degradation of a crack-resistant hydrogen-doped pipeline system according to claim 6, characterized in that: The hydrogen concentration gradient field, initiation probability, and potential expansion path are spatially mapped to generate a circumferential risk heat map of the pipeline, which displays the location evolution trend of the risk core area in real time. Specifically: The hydrogen concentration gradient field, the probability of hydrogen embrittlement crack initiation in hydrogen-rich areas, and the potential propagation path data are aligned in time and space. A unified spatial mapping benchmark is established through pipeline coordinate system transformation to form a pipeline risk field matrix with multi-parameter superposition. Based on the hydrogen embrittlement sensitivity coefficient and stress concentration factor of the pipeline material, adaptive weight coefficients are assigned to the three characteristic dimensions of hydrogen concentration gradient, initiation probability and potential expansion path to generate a weighted risk index distribution cloud map; The three-dimensional pipeline surface is mapped into a two-dimensional unfolded surface, and the weighted risk index distribution cloud map is converted into a chromaticity-saturation coded thermal layer. The areas in the thermal layer with chromaticity values higher than the preset chromaticity threshold are marked as risk core areas. By analyzing the migration patterns of the risk core areas through time series analysis, the motion vectors of the risk core areas are extracted, and a real-time evolution trend overlay map with directional arrows is generated.

10. The method for monitoring performance degradation of a crack-resistant hydrogen-doped pipeline system according to claim 6, characterized in that: A photoluminescent quantum dot marker array is implanted in the risk core area marked on the risk heat map. By real-time monitoring of abnormal changes in the quantum dot luminescence characteristics, the crack initiation characteristics are determined and a final monitoring report is generated, specifically: In the risk core area marked by the risk heat map, stress-sensitive photoluminescent quantum dots are embedded into the tube wall surface of the risk core area according to a preset lattice spacing, forming a quantum dot monitoring network that is consistent with the metal lattice orientation. The fluorescence spectrum data of the quantum dot monitoring network is collected in real time through a distributed fiber optic spectroscopy system. The characteristic peak position shift, half-peak width change rate and fluorescence lifetime parameters of each quantum dot are recorded synchronously to build a quantum dot strain response time series database. Based on the quantum dot strain response time series database, when three or more adjacent quantum dots are detected to have a characteristic peak position blue shift exceeding a preset threshold, it is determined to be a crack initiation characteristic signal, and the signal intensity and spatial distribution range of the crack initiation characteristic signal are recorded; The spatial distribution of the crack initiation characteristic signal is compared with the corresponding risk core area in the risk heat map to determine the position deviation of the crack initiation, and a final monitoring report including signal strength, spatial distribution range and position deviation is output.

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