Research On Quality Evaluation Index And Quality Classification Of High-pressure Hydrogen Storage Vessel

The automobile industry is an important force to promote economic development,but the environmental problems caused by automobiles cannot be underestimated.The oil consumed by automobiles in the world accounts for more than half of the total consumption.At the same time,the exhaust gas emitted by automobiles is the main substance that causes global climate abnormalities and environmental pollution.Efforts to promote the construction of a safe,environmentally friendly,and efficient energy system is an effective way to alleviate the current global energy shortage and abnormal climate,and it is of great significance to enhance the country’s energy technology innovation and international competitiveness.Water is the only product when hydrogen energy is burned as a fuel and will not pollute the human living environment.Not only that,the reserves of this kind of material on the earth are extremely rich and can be obtained from multiple sources.Therefore,the development and utilization of hydrogen energy is the best solution to the human energy crisis and environmental problems,and it is favored by many scientific and technological workers.As a new type of energy,hydrogen has not yet matured many development and utilization technologies,and faces many challenges in practical applications.Whether hydrogen energy can be widely developed and utilized depends on the safe and effective transportation and storage of hydrogen energy.At present,countries in the world are focusing on the research and development of hydrogen storage materials and technologies.In this dissertation,the evaluation indicators of the quality of the high-pressure hydrogen storage container were analyzed,and a statistical model of the quality classification evaluation method of the high-pressure hydrogen storage container was constructed.With reference to existing related research results,the indicators that affect the quality evaluation of hydrogen storage containers and their distribution types were determined,and the unknown information in the distribution was inferred.Based on the inference results,a quality classification model for high-pressure hydrogen storage vessels was constructed.The Monte Carlo method was used to simulate 150 high-pressure hydrogen storage containers to generate the samples needed in the modeling process.Compare the existing classification general rules of related equipment to verify the applicability and effectiveness of the established model.The quality of hydrogen storage containers was evaluated by using ordered multi-class Logistic regression model.The empirical analysis results show that the main quality characteristics and key quality characteristics in the model have significant effects.Under the condition that the main quality characteristics remain unchanged,if the total index level in the key quality characteristics increases by one unit,the odds of the hydrogen storage container is a superior product will be reduced by 82.88%.When the total index level is reduced by one unit,the odds increases by4.84 times.Under the condition that the key quality characteristics remain unchanged,the total index level in the main quality characteristics increases by one unit,and the odds of the hydrogen storage container is a superior product will be reduced by57.42%.When the total index level decreases by one unit,the odds increases by 1.35 times.The model evaluates the quality level of the hydrogen storage container,and the accuracy of the judgment result is above 76%,and there is no extreme result of judging a container whose actual category is a good product as a qualified product,or judging a container whose actual category is a qualified product as a good product,which verifies the reliability of the model.The research results of the dissertation provide theoretical and technical supports for the rationally designing high-pressure hydrogen storage vessels and scientifically assessing the quality of the vessels.The development of hydrogen energy has a long way to go,and there are many problems to be solved urgently.This research has important theoretical significance and practical value.