METHOD OF SUPPLYING HIGH PRESSURE HYDROGEN GAS TO CONSUMER Russian patent published in 2017 - IPC F17C5/06 F17C9/02 

FIELD: machine engineering.

SUBSTANCE: method of supplying high pressure hydrogen gas to the consumer consists in injecting by a pump the liquid hydrogen through an overlapped pipeline from the reservoir into the gasifier tank in the form of a tank of total volume V_t, where, with increasing temperature and pressure, the liquid hydrogen is converted to a high-pressure gas by means of the supplied heat. The tank with the volume V_t is made with an internal tank of volume V_int, which is connected to the pump with the overlap and through the through holes is connected to the tank of volume V_t. The volume ratio V_int/V_t is selected in the range from 0.3 to 1.0 depending on the maximum hydrogen pressure at a constant maximum temperature of the tank of the volume V_t. The filling the internal tank of the volume V_int for a single cycle is carried out with hydrogen of a dosage mass with supercritical values of pressure and temperature. The constant volume heating of hydrogen is provided by the heat of the surrounding medium with the attainment of a predetermined maximum allowable pressure of hydrogen gas before supplying to the consumer. After filling the consumer's cylinders at a decrease of the pressure in the tank V_t up to the set level, the overlapped pipeline is cut off from the consumer and connected to the technological tank. Cool the remaining hydrogen in the tank with liquid nitrogen along the cryogenic lines from the source and continue to transfer hydrogen into the technological tank with a decrease in pressure and temperature in the V_t tank up to the level of the hydrogen pressure at the pump output during operation. Then turn the pump on, add the dosage mass of hydrogen up to the predetermined value from the tank of liquid hydrogen and conduct next cycle of supplying hydrogen gas to the consumer.

EFFECT: achievement of the maximum allowable pressure of hydrogen gas in the filled tank, exclusion of flow vibrations and reduction of energy consumption, increase the durability of the gasifier tank, increase in the speed of refuelling of cylinders, ensuring the possibility of recovery of high pressure hydrogen tank up to the maximum pressure level after pressure reduction.

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