598 results about "Hydrogen concentration" patented technology

The invention relates to the technical field of pipeline safety, and discloses a hydrogen-doped pipeline hydrogen damage grading evaluation method based on fracture mechanics. Comprising the following steps: acquiring initial pipeline state data by establishing a hydrogen-doped pipeline digital twin model; then introducing a hydrogen concentration dependency term to correct the J integral expression, and performing stress analysis based on the J integral expression; generating a material toughness attenuation curve based on a stress analysis result; hydrogen diffusion and accumulation rate parameters are obtained based on a material toughness attenuation curve; predicting a damage development track in combination with real-time operation data; establishing a grading standard system of dynamic response based on the model for risk assessment; and finally, real-time monitoring and scientific grading of the hydrogen damage of the hydrogen-doped pipeline are realized. According to the invention, comprehensive dynamic evaluation of hydrogen damage of the hydrogen-doped pipeline is realized, and scientific decision support is provided for safe operation of the pipeline.

The invention relates to the technical field of new energy power generation vehicles, and discloses a hydrogen leakage monitoring method and device and a fuel cell vehicle, and the method comprises the steps: carrying out the hydrogen concentration monitoring of a first space through a first concentration sensor, and obtaining first hydrogen concentration data; monitoring the hydrogen concentration in the hydrogen bottle through a second concentration sensor to obtain second hydrogen concentration data; determining hydrogen mass change data in the hydrogen cylinder based on the second hydrogen concentration data; performing leakage assessment according to the hydrogen mass change data and the first hydrogen concentration data to obtain hydrogen leakage assessment data; performing temperature detection on the first space through a first imaging sensor to obtain first temperature distribution data; and determining the hydrogen leakage condition in the first space according to the first hydrogen concentration data, the hydrogen leakage evaluation data and the first temperature distribution data. The fuel cell hydrogen leakage detection device has the beneficial effects that the problem of single hydrogen leakage detection means is solved, and the fuel cell hydrogen leakage detection accuracy is improved.

The invention belongs to the technical field of green hydrogen preparation, discloses an intelligent monitoring method for hydrogen impurities in oxygen in an electrolytic cell system, and solves the problems of response lag, high false alarm rate, incapability of dynamically adjusting working conditions and lack of prediction capability in the prior art. According to the method, the hydrogen concentration in oxygen and key operation parameters of an electrolytic cell are preprocessed, then multi-dimensional correlation analysis is carried out, a dynamic characteristic matrix is constructed, then a hydrogen concentration prediction model is trained based on the constructed dynamic characteristic matrix, and an SVM classifier is adopted to carry out abnormal mode recognition; in the monitoring process, if the predicted hydrogen concentration exceeds a threshold value or an abnormal mode is recognized, grading response is triggered, operation of the electrolytic cells is controlled by adopting a closed-loop control strategy according to real-time detection values of key operation parameters of the electrolytic cells, and finally transverse data comparison of the multi-electrolytic-cell system is achieved through a cloud collaborative optimization technology. And identifying common problems and providing maintenance suggestions.

The invention discloses a hydrogen leakage positioning method, system and device for an electricity-hydrogen coupling station and a medium. The hydrogen leakage positioning method for the electricity-hydrogen coupling station comprises the following steps: analyzing a hydrogen leakage scene of the electricity-hydrogen coupling station, and determining a hydrogen leakage position and working condition; according to the hydrogen leakage position, the overall structure of the electricity-hydrogen coupling station and the real layout of the hydrogen-related area, geometric models of areas where different leakage positions of the electricity-hydrogen coupling station are located are established; performing three-dimensional grid division on the geometric model; hydrogen concentration data of a hydrogen concentration sensor monitoring point are obtained; building and training a leakage positioning model according to the data set; optimizing the sensor layout; and applying the optimized sensor layout and the trained leakage positioning model to an actual electro-hydrogen coupling station scene to realize hydrogen leakage monitoring and leakage positioning. Through the sensor layout optimized by an intelligent algorithm and an advanced machine learning algorithm, the accuracy and efficiency of hydrogen leakage positioning are greatly improved.

The invention discloses a lithium precipitation rapid quantitative detection method and system, a storage medium and a program product, and relates to the field of equipment specially suitable for material research and analys.The method comprises the steps that after ethyl alcohol of a preset volume is dropwise added to the surface of a to-be-detected pole piece, real-time concentration data of hydrogen is collected; determining a time-varying curve of the hydrogen concentration; determining the reaction activity of metal lithium on the surface of the to-be-detected pole piece based on the curve; compensating and correcting the real-time concentration data of the hydrogen according to the reaction activity; and converting the corrected hydrogen concentration data into a lithium quality detection result. The hydrogen generation container is the closed reaction bottle, the needle connected with the hydrogen sensor is inserted into the reaction bottle, the hydrogen concentration can be rapidly detected, the hydrogen concentration in different reaction bottles can be rapidly detected by inserting different reaction bottles, and the detection process is in a closed environment. The method is used for improving the precision of quantitative detection of precipitated lithium, so that the frequency of electrode replacement and calibration is reduced, and the continuity and reliability of detection data in the production process are improved.

The invention relates to a hydrogen safety rapid early warning method based on hydrogen micro leakage judgment. The early warning method comprises the following steps: acquiring technological process information of a hydrogen refueling station system, and carrying out hazard source identification to obtain a hazard source identification result; a risk point where hydrogen leakage is likely to happen in the hydrogen refueling station is determined, and a combined criterion of the hydrogen concentration change rate, the hydrogen concentration sudden change value and the hydrogen concentration threshold value is formulated; carrying out a hydrogen leakage test, and determining a parameter threshold value of a hydrogen leakage criterion; and obtaining a fault state operation parameter change rule, and positioning hydrogen leakage so as to realize rapid early warning of hydrogen leakage. Compared with the prior art, the micro leakage test and the fault state operation parameter test are combined, the leakage alarm is realized at the hydrogen micro leakage stage, and the safety of the hydrogen related system can be improved to a great extent. The method is not only suitable for rapid early warning of hydrogen leakage of a hydrogen related system, but also suitable for leakage early warning of other toxic gases or combustible gases, and has wide application scenarios.

To suppress hydrogen concentration in surrounding atmosphere to a determined reference value or less by detecting a change in the hydrogen concentration if liquefied hydrogen leaks.SOLUTION: A liquefied hydrogen pump system includes a liquefied hydrogen pump and a control device, and the liquefied hydrogen pump includes a cylinder, a piston, a rod, a drive part, and a seal part. The seal part includes a first seal member, a second seal member provided with an interval in the direction of separating from the piston an axial direction with respect to the first seal member, a flow passage part, one end of which communicates with a gap between the rod and the cylinder and the other end of which opens to the outside of the cylinder, and an information acquisition part for acquiring information on hydrogen concentration in a fluid flowing to the outside of the cylinder through the flow passage part. The control device stops the operation of the liquefied hydrogen pump in the case of determining that hydrogen concentration in the fluid exceeds a preset reference value on the basis of information on the acquired hydrogen concentration.SELECTED DRAWING: Figure 2

The invention relates to an active and passive integrated protection method and system for hydrogen safety in a confined space, and the protection method specifically comprises the steps: building an equal ratio test model and a simulation model of a hydrogen utilization system in the confined space, and carrying out the numerical simulation analysis; carrying out limited space hazard source identification, determining installation positions of a limited space hydrogen leakage collection device and a hydrogen concentration sensor, and formulating a hydrogen micro-leakage criterion combining a hydrogen concentration change rate, a hydrogen concentration break variable and a hydrogen concentration threshold value; and determining an arrangement scheme of a limited space exhaust system and an explosion pressure relief system. The protection system comprises an active protection device and a passive protection device. Compared with the prior art, the method has the advantages that the accuracy of the simulation model is verified, the simulation model is continuously optimized and adjusted until the accuracy meets the requirement, and the obtained result is more reliable and is more consistent with the actual situation. The hydrogen safety active and passive integrated protection device provided by the invention has early warning and protection functions, and comprehensively and efficiently realizes prevention and control of system hydrogen safety.

The invention relates to a method for preventing an automatically continued ignition of hydrogen in an exhaust (150) of a fuel cell unit, in particular of a fuel cell vehicle, when the fuel cell unit is started, characterized in that, when at least one start condition of the fuel cell unit is met, reactive hydrogen is removed from a cathode- side and / or exhaust-side gas of the fuel cell unit until, when the fuel cell unit is started, an actual level of a hydrogen concentration in the exhaust (150) is below the lower hydrogen explosion limit, and the method is preferably carried out only when an initial level of the hydrogen concentration of the cathode-side and / or exhaust-side gas in the fuel cell unit is above the lower hydrogen explosion limit for the exhaust (150).

The invention discloses a safety type damaged state rock hydrogen permeation simulation device and method.The simulation device comprises a box body, a simulation mechanism, a hydrogen injection mechanism and an explosion-proof mechanism, and the simulation mechanism comprises a pressure box, a lower cushion block, a thermal shrinkage sleeve, an upper pressing block, an axial pressure assembly and a confining pressure assembly; and the hydrogen injection mechanism is communicated with the gas inlet hole and the gas outlet hole and is used for injecting gas with preset gas pressure and preset hydrogen concentration into the thermal shrinkable sleeve. The device has the beneficial effects that gas with preset pressure and preset hydrogen concentration is continuously injected into the rock sample in the thermal shrinkable sleeve through the hydrogen injection mechanism, the influence of different hydrogen environments on rock mechanical properties can be simulated, meanwhile, the first hydrogen concentration detection piece continuously monitors the hydrogen concentration in the box body, and if the concentration exceeds a preset safety threshold value, the hydrogen concentration is detected. And the fan is immediately started, and hydrogen in the box body is discharged to an outdoor safe area, so that explosion accidents caused by hydrogen leakage can be avoided, and the safety of an experiment process is improved.

The invention discloses a cable fault diagnosis method and system based on ablation gas of a semi-conductive resistance water buffer zone, and the method comprises the steps: extracting gas in a to-be-detected cable buffer layer through a gas collection assembly disposed outside a main insulation part of a cable body; analyzing the gas in the buffer layer of the to-be-detected cable through a cable characteristic gas analysis instrument to obtain the concentrations of hydrogen and propane in the buffer layer of the to-be-detected cable; and comparing the hydrogen concentration with the hydrogen concentration of the cable in a normal operation state, and determining the operation state of the cable to be detected according to the propane content. The problem that the detection time is interfered or missed in the prior art is solved, and whether the semi-conductive resistance water buffer strip is ablated or not can be rapidly and accurately detected and judged.

A method for estimating a quantity of natural hydrogen in a subterranean formation includes degassing drilling fluid obtained from a wellbore to obtain a gas sample including a quantity of hydrogen gas, measuring a concentration of hydrogen in the gas sample, and applying a correction to the measured concentration of hydrogen to estimate the quantity of natural hydrogen in the subterranean formation.

The invention discloses a liquid hydrogen leakage diffusion solving method and device based on the inlet velocity of an atmospheric boundary layer, and belongs to the field of numerical solution, and the method comprises the steps: based on the inlet velocity contour characteristics of the atmospheric boundary layer, combining the characteristics of the atmospheric boundary layer and a liquid hydrogen leakage diffusion model, solving the density through conjugate heat transfer, and solving a thermal diffusion coefficient at the same time; the method is closer to the actual physical process, so that the simulation result is more authentic. Residual errors are introduced, PBiCGStab is adopted in the virtual residual errors and the virtual search direction, and high convergence speed and high calculation efficiency are achieved. And through a PIMPLE algorithm pre-estimation-correction optimization strategy, the method has the advantages of high stability and precision. The method can accurately describe diffusion rules in complex environments, such as gas flow state, diffusion behavior characteristics, hydrogen concentration distribution and the like, of the hydrogen cloud cluster after liquid hydrogen leakage.

The invention relates to the technical field of water electrolysis hydrogen production, and provides a safety control method and control device of an alkaline electrolysis hydrogen production system and the hydrogen production system.The safety control method of the alkaline electrolysis hydrogen production system comprises the steps that the current-moment oxygen concentration and the current-moment hydrogen concentration of each alkaline electrolysis bath are obtained; and when the current oxygen concentration of at least one alkaline electrolytic cell is smaller than a first oxygen concentration threshold value or the current hydrogen concentration of at least one alkaline electrolytic cell is smaller than a first hydrogen concentration threshold value, the alkaline electrolytic hydrogen production system is controlled to stop running, and inert gas is injected into the hydrogen separator and the oxygen separator. By means of the arrangement, the gas concentration of the oxygen side outlet and the hydrogen side outlet of each alkaline electrolytic cell is monitored, the working condition of each alkaline electrolytic cell can be accurately known, and when the concentration exceeds the threshold value range, the hydrogen production system can be stopped, inert gas can be injected into the separator, and therefore the hydrogen production efficiency is improved. The hydrogen concentration in the oxygen separator and the oxygen concentration in the hydrogen separator are reduced, and explosion is effectively avoided.

The invention relates to the technical field of hydrogen leakage detection, in particular to a visual monitoring method and device for simulating hydrogen leakage of a vehicle-mounted hydrogen system.The method comprises the steps that a hydrogen simulation input device is adopted for supplying leaked hydrogen, and the leaked hydrogen is input into a hydrogen leakage concentration monitoring device; a hydrogen leakage simulation scene is constructed by combining a hydrogen leakage concentration monitoring device and a to-be-analyzed vehicle-mounted hydrogen system, and leakage working condition characteristics of hydrogen leakage are configured; the hydrogen leakage concentration monitoring device adopts a preset layout strategy to set a plurality of hydrogen concentration sensors to monitor the hydrogen concentration of a plurality of specific positions; and calculating and drawing a transient change curve of the hydrogen concentration of the plurality of hydrogen concentration sensors along with time and a hydrogen concentration distribution matrix according to the time sequence monitoring result of the hydrogen concentration. According to the invention, real scenes under different leakage working conditions can be simulated to analyze the incidence relation of hydrogen concentration change conditions, evolution characteristics of hydrogen leakage diffusion in a space are obtained, and reference is provided for safety monitoring of hydrogen leakage.

The invention discloses a fuel cell test bench safety monitoring execution method, device, equipment and medium, and relates to the technical field of fuel cell system bench testing.The method comprises the steps that the hydrogen pressure change rate, the hydrogen concentration value and the reference value of the hydrogen concentration change rate are set respectively; collecting a hydrogen pressure signal and a hydrogen concentration signal in the test bench; based on the collected hydrogen pressure signal and hydrogen concentration signal, calculating to obtain a hydrogen pressure change rate, a hydrogen concentration value and a hydrogen concentration change rate in the test bench; and respectively comparing the hydrogen pressure change rate, the hydrogen concentration value and the hydrogen concentration change rate obtained by calculation with set reference values so as to adjust the working state of the test bench. By monitoring and automatically adjusting the hydrogen pressure and concentration, the system can quickly respond to hydrogen leakage and automatically take measures to guarantee the test safety, the safety risk is reduced, and the test efficiency and quality are improved.

The invention discloses a hydrogen refueling station hydrogen leakage flow prediction method, system and device, a medium and a product, and relates to the field of hydrogen energy safety, and the method comprises the steps: obtaining a hydrogen concentration value of a to-be-predicted position of a target hydrogen refueling station, a hydrogen temperature value in a hydrogen storage system, an environment temperature value, and a wind direction and wind speed in the target hydrogen refueling station; according to the parameters, determining the hydrogen leakage flow of the to-be-predicted position of the target hydrogen refueling station by using a hydrogen leakage flow prediction model; wherein the hydrogen leakage flow prediction model is obtained by training each base learner by using a first training data set and training a meta learner by using a second training data set; the first training data set is composed of monitoring point hydrogen concentration calculated by a simulation model, a relational database and time sequence key features of the relational database, and the second training data set is composed of a verification data set and hydrogen leakage flow prediction results generated by all trained base learners. The accuracy of hydrogen leakage flow prediction is improved.

The invention discloses a hydrogen diffusion evaluation method and device for an irregular corrosion defect pipeline, equipment and a medium, and relates to the technical field of oil and gas pipeline safety, a stress field calculation result of the irregular corrosion defect pipeline is obtained, the stress field calculation result is coupled with a hydrogen diffusion field, and a hydrogen diffusion model is established; generating a hydrogen concentration distribution cloud picture based on the hydrogen diffusion model, and analyzing the hydrogen concentration distribution cloud picture to obtain an association relationship between the hydrogen diffusion behavior and hydrostatic stress distribution; based on the incidence relation, hydrogen concentration distribution change curves under irregular defect shapes, regular and irregular defect shapes, corrosion defect lengths and corrosion defect depths of different morphologies are determined respectively; hydrogen diffusion evaluation is carried out on the irregular corrosion defect pipeline based on the hydrogen concentration distribution change curve, the problem that the diffusion behavior and the concentration distribution rule of hydrogen in a real defect area are difficult to accurately reflect is solved, the accuracy and reliability of hydrogen diffusion evaluation of the irregular corrosion defect pipeline are improved, and the safety of pipeline operation is improved.

The invention discloses a metal material delayed cracking threshold hydrogen concentration and stress test method, which comprises the following steps: S1, preparing a sample, treating the surface of the sample, and removing hydrogen concentration surface pollutants in the sample; s2, measuring the material tensile strength of the sample; s3, placing the sample in a hydrogen charging solution in an electrochemical constant current mode for charging hydrogen at different time lengths, and measuring the diffusible hydrogen content; s4, drawing a hydrogen concentration change curve, and preparing samples with different hydrogen concentrations from the samples in the step S3 according to the hydrogen concentration change curve; s5, galvanizing the sample prepared in the step S4 by adopting an electrogalvanizing process; and S6, stress loading is conducted on the sample galvanized in the step S5, and the threshold hydrogen concentration and the threshold stress value are obtained through standing and observation. The hydrogen resistance of the high-strength automobile steel is obtained, the hydrogen embrittlement cracking risk of the high-strength automobile steel under different hydrogen concentration and stress conditions is obtained, and prevention measures are provided.

The invention relates to the technical field of gas permeability testing, in particular to a method and device for measuring the hydrogen permeation rule of nonmetal in the thickness direction, and the device comprises a first supporting seat, a hydrogen filling tank, a sample, a hydrogen measuring hose, a hydrogen concentration detector, a second supporting seat, a hydrogen filling hole, a pressure relief hole, a detection hole, an exhaust window and a sealing O-shaped ring; hydrogen is charged through a hydrogen charging hole in one side of the hydrogen charging tank, the hydrogen permeates in the thickness direction of the sample according to the concentration gradient, and the hydrogen permeates into a detection hole and then enters a hydrogen concentration detector through a hydrogen measuring hose; the device can be used for measuring the hydrogen permeation rule of nonmetal in the thickness direction, and provides experimental support for related hydrogen permeation simulation, so that a basis is provided for research, development and selection of nonmetal materials of a hydrogen conveying system.

The invention relates to a material performance testing technology in a hydrogen environment, and aims to provide a method for acquiring the surface hydrogen concentration of a hydrogen permeation sample by considering a hydrogen trap effect. Comprising the following steps: performing multiple groups of hydrogen permeation experiments on a to-be-tested material; fitting a hydrogen permeation curve by using test data to obtain steady-state hydrogen permeation current density and hysteresis diffusion time under different conditions, and calculating the lattice hydrogen concentration of the hydrogen-filled surface; calculating the hydrogen trap density based on the progressive analysis curve of the hydrogen diffusion kinetic equation and the lattice hydrogen diffusion coefficient of the to-be-detected material; calculating the hydrogen trap binding energy of the to-be-tested material according to a thermal desorption spectrum experiment result; and establishing a balance relationship between lattice hydrogen concentration and trap hydrogen concentration, and obtaining a concentration distribution rule in the hydrogen diffusion direction and the hydrogen concentration on the hydrogen charging surface during steady-state diffusion. According to the method, the nonlinear effect, caused by the hydrogen trap effect in the hydrogen permeation process, of hydrogen distribution in the material during steady-state hydrogen diffusion is considered, and the hydrogen concentration on the surface of the hydrogen permeation experiment material can be obtained more accurately.

The invention relates to the technical field of hydrogen production, in particular to an efficient hydrogen leakage explosion meter and rapid emptying linkage system and an emergency treatment method. Comprising a hydrogen concentration detection module, a data processing module, a rapid emptying device, an emergency processing module and a communication module, the hydrogen concentration detection module is used for collecting hydrogen concentration data in the surrounding environment of the hydrogen production equipment in real time and transmitting the collected data to the data processing module; the data processing module receives the data transmitted by the hydrogen concentration detection module, analyzes and processes the data based on a preset algorithm, and judges whether hydrogen leakage occurs or not and the leakage level; the quick emptying device is in communication connection with the data processing module, and when the data processing module judges that hydrogen leakage occurs, corresponding emptying operation is executed according to the leakage level; according to the invention, the timeliness, accuracy and safety of hydrogen leakage detection and processing can be improved.

The invention discloses an electrolytic bath gas control system and a control method thereof. According to the application, the first purge gas supply pipeline is arranged on the pure water supply pipeline on the anode side of the electrolytic cell, and the hydrogen concentration detector is arranged on the oxygen output pipeline on the anode side of the electrolytic cell and is used for detecting the real-time hydrogen concentration of the gas in the oxygen output pipeline; and the first purge gas supply pipeline is controlled to be opened to inject purge gas into the electrolytic cell until the real-time hydrogen concentration is smaller than a preset hydrogen concentration limit value, the hydrogen concentration of gas in the oxygen output pipeline can be effectively controlled to prolong the operation time of the electrolytic cell, and the low-load operation duration of the electrolytic cell can be prolonged.

The invention discloses a hydrogen concentration sensor which comprises a thermoelectric power generation module, a concentration detection module and a control module, wherein the temperature difference power generation module carries out catalytic combustion when hydrogen is sucked in so as to generate target voltage, and the target voltage is used for supplying power to the concentration detection module and the control module; the concentration detection module is used for detecting the hydrogen concentration in the environment after power supply, generating a voltage signal and sending the voltage signal to the control module; and the control module is used for judging the hydrogen concentration in the environment according to the voltage signal. Therefore, compared with a linear hydrogen concentration sensor, the self-powered hydrogen concentration sensor has the advantages that an additional power supply is not needed, complicated circuits and related circuit loss are avoided, the sensor can be integrated and miniaturized, the sensor can be better applied to a complicated environment, and the self-powered hydrogen concentration sensor can guarantee continuous monitoring.

The invention discloses a hydrogen leakage detection device and a vehicle. The hydrogen leakage detection device is used for the vehicle, the vehicle comprises a frame body and a plurality of hydrogen storage bottles, each hydrogen storage bottle is connected with a bottle opening valve, and the hydrogen leakage detection device comprises a hydrogen concentration detection part, a moving module and a control module; the moving module is connected with the hydrogen concentration detection part and is used for driving the hydrogen concentration detection part to move; the control module is electrically connected with the hydrogen concentration detection part and the moving module, and the control module is used for acquiring position information of the plurality of bottleneck valves, determining a plurality of inspection areas based on the position information of the plurality of bottleneck valves, and controlling the moving module to drive the hydrogen concentration detection part to sequentially move to the plurality of inspection areas so as to perform area inspection on the plurality of inspection areas; wherein the area inspection comprises the steps of obtaining the hydrogen concentration detected by the hydrogen concentration detection piece, and determining whether hydrogen leaks or not based on the hydrogen concentration. According to the scheme, the problem that the hydrogen leakage detection precision is low is solved.

The invention discloses an intelligent monitoring system for hydrogen embrittlement detection and an implementation method of the intelligent monitoring system, and relates to the field of material structure monitoring, a strain sensor, a temperature sensor and a hydrogen concentration sensor are installed, and a wireless sensor network is constructed to achieve real-time monitoring of the strain state, the temperature change and the hydrogen concentration of a material; in the data processing stage, monitoring data is smoothed, cleaned and normalized, noise is effectively eliminated, the data quality is improved, the characteristics of the strain rate, the temperature change rate and the hydrogen concentration change rate are extracted, and subdata sets are obtained through recursion division; evaluating the relationship between the characteristics and the hydrogen embrittlement risk by calculating a Pearson's correlation coefficient, and calculating an abnormal score by using an isolated tree algorithm so as to divide risk conditions; creating a RESTfu API interface, regularly generating a hydrogen embrittlement risk report, and implementing corresponding monitoring and maintenance measures according to the risk level; through the method, the equipment safety and the management efficiency are improved, accidents and loss caused by hydrogen embrittlement are reduced, and the overall management efficiency is improved.

A method for modifying an insulating film is provided. The method includes a first step of preparing an insulating film containing hydrogen, and a second step of performing microwave treatment on the insulating film to release the hydrogen in the insulating film as water molecules, so that a hydrogen concentration in the insulating film is reduced. Note that the microwave treatment is preferably performed using an oxygen gas and an argon gas at a temperature range of higher than or equal to 200° C. and lower than or equal to 300° C., and the proportion of the flow rate of the oxygen gas to the total of the flow rate of the oxygen gas and the flow rate of the argon gas is preferably greater than 0% and less than or equal to 50%.

The utility model discloses a hydrogen removal system which comprises a first hydrogen removal module, a second hydrogen removal module and a third hydrogen removal module, the reactor coolant system comprises a reactor coolant system main loop and a voltage stabilizer; the first hydrogen removal module is connected with a main loop of the reactor coolant system, and the first hydrogen removal module is used for carrying out circulating degassing on a coolant in the main loop of the reactor coolant system before shutdown, so that the hydrogen concentration of the coolant is within a preset range; the second hydrogen removal module is connected with the voltage stabilizer; the second hydrogen removal module is used for reducing the hydrogen concentration of a gaseous space in the voltage stabilizer after shutdown; and the third hydrogen removal module is connected with the reactor coolant system main loop and is used for carrying out chemical hydrogen removal on the reactor coolant system main loop after the reactor is shut down and the temperature of the coolant is lower than the preset temperature until the hydrogen concentration is reduced to be lower than the preset concentration. Therefore, long hydrogen removal time of the reactor coolant system in the maintenance process is avoided, and the hydrogen removal efficiency is improved.

The invention discloses a metal material hydrogen compatibility simulation test method based on hydrogen content. The method comprises the following steps: S1, sample preparation; s2, charging hydrogen in a high-pressure hydrogen environment; s3, diffusible hydrogen is measured; s4, preparing an electrochemical hydrogen charging solution; s5, carrying out hydrogen charging by using an electrochemical hydrogen charging solution; s6, storing the sample; s7, drawing a hydrogen concentration change curve; s8, electrogalvanizing process parameters are set; s9, performing hydrogen charging in a simulated high-pressure hydrogen environment; s10, the sample is galvanized; s11, carrying out a slow tensile test and a fracture toughness test on the sample; and S12, evaluating the high-pressure hydrogen embrittlement of the sample based on the results of the slow tensile test and the fracture toughness test. According to the method, the hydrogen embrittlement performance of the material under different hydrogen pressure environments can be obtained, and the influence of the influence factors on the high-pressure hydrogen embrittlement performance of the steel can be analyzed in combination with the process, alloy components and stress states of the steel.