Gas cylinder filling process safety detection method and system

Abstract

The invention relates to a gas cylinder filling process safety detection method and system. The method comprises the following steps: S1, acquiring hydrogenation vehicle gas cylinder information; s2, acquiring a gas mass-gas cylinder pressure standard condition change curve in the gas cylinder and a gas mass-gas cylinder temperature standard condition change curve in the corresponding standard condition filling process of the gas cylinder; s3, the actual pressure of the gas cylinder is corrected for the first time according to the actual temperature of the gas cylinder in the actual filling process of the gas cylinder and the temperature of the gas cylinder at the gas mass position, corresponding to the standard condition change curve, in the gas cylinder; s4, on the basis of the actual pressure of the gas cylinder after the first correction, according to the actual filling temperature in the actual filling process of the gas cylinder and the standard filling temperature in the standard condition filling process, the actual pressure of the gas cylinder is corrected for the second time; and S5, judging whether the actual filling process is safe or not according to the actual pressure of the gas cylinder after the second correction and the pressure of the gas cylinder at the gas mass position in the gas cylinder corresponding to the standard condition change curve. According to the invention, the reliability of the safety detection result in the gas cylinder filling process can be improved.

Description

technical field [0001] The invention belongs to the technical field of gas cylinder filling detection, and in particular relates to a safety detection method and system for a gas cylinder filling process. Background technique [0002] Hydrogen energy is internationally recognized as the future green energy due to its advantages of high energy efficiency, wide sources, renewable, and zero pollution of combustion products. In recent years, many countries and regions, including the United States, Japan, China, South Korea and the European Union, Vigorously develop hydrogen energy vehicles, actively build hydrogen refueling stations and related hydrogen energy infrastructure, and use hydrogen as power has become an important application direction in the new energy field. The high-pressure form is stored in the vehicle-mounted hydrogen cylinder, so it is particularly important for the safety inspection during the filling process of the gas cylinder. [0003] The safety detection...

AI Technical Summary

Problems solved by technology

[0003] At present, the safety detection in the hydrogenation process mainly judges whether the gas cylinder is in an abnormal state by obtaining the deviation between the filling and discharging size change of the gas cylinder during the filling process and the preset size change and comparing the safety deviation with the safety deviation. During the process, the change in the size of the gas cylinder is relatively small, and it is necessary to add a vehicle-mounted gas cylinder installation size detection device, which is difficult to apply

In addition, the preset size change is based on standard conditions, and some factors will change accordingly during the actual filling process, resulting in low reliability of the final safety test results

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