Pump pressure control method for plunger type booster pump of hydrogen refueling station

Abstract

The invention discloses a pump pressure control method for a plunger type booster pump of a hydrogen refueling station. The pump pressure control method comprises the following steps: S1, acquiring the pump pressure of the plunger type booster pump in a working state through a sensor; S2, filtering pump pressure data acquired in the step S1 through a processor; S3, calculating the average rate ofthe pump pressure filtered in the step S2; and S4, comparing the average rate of the pump pressure in the step S3 with a standard value, adjusting, if the average rate of the pump pressure is greaterthan the standard value, prolonging the reversing time of the pump, reducing the pressurization rate of the pump and reducing the flow of gas through a controller, and if the average rate of the pumppressure is less than the standard value, reducing the reversing time of the pump, increasing the pressurization rate of the pump, and increasing the flow of gas through the controller. According to the pump pressure control method for the plunger type booster pump of the hydrogen refueling station provided by the invention, pressure is filtered and acquired, large calculation errors caused to thestamping speed are avoided, and the stamping reliability is improved.

Description

technical field [0001] The invention relates to the technical field of gas booster pumps, in particular to a pump pressure control method of a plunger type booster pump in a hydrogenation station. Background technique [0002] In hydrogen refueling stations, booster pumps are commonly used. The booster equipment mainly drives the booster pump to reciprocate through hydraulic pressure, thereby increasing the gas (hydrogen) pressure. The end pressure of the high-pressure container has a relationship with the temperature and initial pressure. Close relationship, if the current temperature is 10 degrees Celsius and the initial pressure of the container is 10MPa, it needs to be pressurized at a speed of 8.8MPa / min to the end pressure of the volume is 86.6MPa. However, the previous control strategy is to pressurize the high-pressure vessel separately, without participating in any control of the speed, which actually does not meet the requirements for pressurizing the high-pressure...

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Problems solved by technology

[0003] Aiming at the problems in the related technologies, the present invention proposes a pump pressure control method of a plunger type booster pump in a hydrogenation station, which solves the problem of charging pressure when using a plunger type booster pump to pressurize a high-pressure container in a hydrogenation station. The problem of uncontrollable speed

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