Gas circulation charging/discharging fatigue test system for full-automatic high pressure vessel

Abstract

The invention discloses a full-automatic high-pressure container gas circular charging and discharging fatigue test system which not only can realize the full-automatic control of the high-pressure gas circular charging and discharging fatigue test but also can carry out the on-line automatic detection to the fatigue condition of the high-pressure container. The automatic control of the circular charging and discharging is realized through the dynamic response signals of a temperature sensor arranged inside the tested container, the dynamic response signals of each pressure sensor on the high-pressure pipelines and switching of solenoid valves controlled by the control strategy. The gas medium in the circular charging and discharging process can be recycled after the pressurizing by a pressure-releasing receiving tank and a gas compressor so as to avoid the gas waste and environment contamination. The dynamic fatigue states of the high-pressure container in the circular charging and discharging process are acquired through the changing of response signals of a hydrogen sensor arranged in a sealed bin of the tested container and the response signals of a strain sensor stuck to the surface of the tested container; and when the released hydrogen concentration reaches the set value or the strain of the container material exceeds the set value in the charging and discharging process, the fatigue test system is closed automatically.

Description

technical field [0001] The invention belongs to the field of new energy, and relates to a high-pressure gas storage container testing system, in particular to a fatigue test and detection system suitable for a composite material high-pressure container caused by cyclic charging and discharging under the condition of working medium gas (usually fuel gas). Background technique [0002] The major changes in the form of human energy utilization have not only greatly promoted the development of human economy and society, but also had an important impact on the environment on which human beings depend. Under the dual pressure of increasingly scarce oil resources and increasingly serious environmental pollution, people are forced to pursue the maximization of energy utilization efficiency and the minimization of emissions. Due to the high energy efficiency and low emission of low-carbon fuels, gaseous fuels will surely occupy an increasingly important position in the near future, f...

AI Technical Summary

Problems solved by technology

In fact, during the development and production of this type of pressure vessel, it is necessary to pass the hydraulic fatigue test, which generally requires more than 8,000 times. During the process, due to the incompressibility of water, there is no thermal effect, while the gas filling and discharging process has obvious thermal effects - scorched soup effect, and for composite gas cylinders, the general heat transfer performance is poor, and the high-pressure vessel needs to be kept under a large temperature change. Under the condition of rapid pressure change, its fatigue characteristics will inevitably drop significantly. Therefore, it is of great significance to carry out the fatigue test and fatigue performance detection of high-pressure vessel gas circulation. The fully automatic unattended high-pressure container gas filling and discharging cycle fatigue test system should be the best choice

[0004] The application number of Zhejiang University is 200810060100.8, the hydrogen environment fatigue test system for hydrogen storage container, which shows the design of a hydrogen charging and discharging fatigue test system for hydrogen storage containers, which can only be used for simple hydrogen charging and discharging tests, not only can not be used for charging and discharging The process is accurately controlled, and it is impossible to obtain accurate information on the fatigue of the container during the filling and discharging process (only from the pressure maintenance of the container to judge whether it is invalid)

At the same time, the fatigue test system mentioned in the patent requires manual operation, which is inconvenient

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