Delivery system of liquid hydrogen refueling station and liquid hydrogen refueling station

Abstract

The embodiment of the invention provides a delivery system of a liquid hydrogen refueling station and the hydrogen refueling station, and belongs to the field of hydrogen refueling stations. The hydrogen refueling station comprises a hydrogen refueling machine. The delivery system comprises an evaporator, a cooler, hydrogen delivery pipelines and circulating pipelines; the evaporator is connectedwith liquid hydrogen supplied by a liquid hydrogen source through the corresponding hydrogen delivery pipeline, and the liquid hydrogen is vaporized in the evaporator; the cooler is connected betweenthe hydrogen refueling machine and the evaporator through the corresponding hydrogen delivery pipelines and used for cooling the vaporized liquid hydrogen; and the circulating pipelines are arranged between the evaporator and the cooler and are independent of the hydrogen delivery pipelines in terms of the connectivity, heat exchange media are contained in the circulating pipelines, and then the heat exchange media circulate between the evaporator and the cooler to achieve heat exchange with the liquid hydrogen in the evaporator and achieve heat exchange with the vaporized liquid hydrogen in the cooler. According to the delivery system of the liquid hydrogen refueling station and the liquid hydrogen refueling station, energy consumption of the hydrogen refueling station can be reduced.

Description

technical field [0001] The invention relates to a hydrogen refueling station, in particular to a delivery system of a liquid hydrogen refueling station and a liquid hydrogen refueling station. Background technique [0002] Hydrogen is refueled for fuel cell vehicles through a hydrogenation machine at a hydrogenation station, and stored in a vehicle-mounted hydrogen cylinder in a high-pressure form. The mainstream storage pressure is divided into two types: 35MPa and 70MPa. [0003] The high-pressure hydrogen expands in the hydrogen storage bottle, and due to the scorching effect of hydrogen, the temperature inside the bottle rises. Due to the fast filling speed, the vehicle-mounted hydrogen storage bottle cannot dissipate heat in time, causing the temperature inside the hydrogen storage bottle to rise rapidly, which may exceed the current international standard of 85°C, posing a great safety hazard. The temperature rise of the hydrogenation process with a pressure level of ...

AI Technical Summary

Problems solved by technology

The 70MPa filling hydrogen is in high-speed flow and expansion, and the temperature rises sharply. If the 35MPa filling mode is still adopted, the hydrogenation time will be very long

However, purely relying on energy such as electric energy to cool high-pressure hydrogen gas consumes a lot of electricity, and the energy consumption of hydrogen refueling stations is relatively serious.

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