Water electrolysis hydrogen production liquid level measurement filtering method

CN119121319APending Publication Date: 2024-12-13CHENGDU HOUPU HYDROGEN ENERGY TECH CO LTD
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Patent Information

Application Number
CN202411255899.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-09-09
Publication Date
2024-12-13

AI Technical Summary

Technical Problem

The liquid level fluctuates greatly in the existing electrolytic water hydrogen production system, and the existing filtering method has limited improvement in the system's liquid level balance adjustment effect, resulting in frequent adjustment of the regulating valve, affecting the hydrogen quality and the life of the regulating valve.

Method used

The two-stage filtering method is used to filter the liquid level sensors on the oxygen side and hydrogen side respectively, calculate the liquid level difference and perform further filtering. Combined with rate of change filtering and Kalman filtering, the filtering method is adjusted to reduce hysteresis and provide a smoother The liquid level difference is given to the regulating valve.

Benefits of technology

Effectively reduce liquid level fluctuations, improve hydrogen quality, reduce hydrogen and oxygen impurities content, extend the service life of the regulating valve, and improve system safety and response speed.

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Abstract

The invention relates to the technical field of water electrolysis hydrogen production, aims at solving the problems that in the prior art, the liquid level fluctuation amount in a water electrolysis hydrogen production system is large, and the improvement of an existing filtering mode on the system liquid level balance adjusting effect is limited, and provides a water electrolysis hydrogen production liquid level measurement filtering method. Comprising the following steps: S1, respectively measuring liquid levels of an oxygen side and a hydrogen side of an electrolytic cell through an oxygen liquid level sensor on the oxygen side of an electrolytic cell separator and a hydrogen liquid level sensor on the hydrogen side of the electrolytic cell separator, and respectively filtering measured values of the oxygen liquid level sensor and the hydrogen liquid level sensor to obtain primary filtering values of the liquid levels of the oxygen side and the hydrogen side; at the moment, the first-stage filtering value of the liquid level on the side serves as the actual liquid level on the side; s2, performing filtering on the oxygen side liquid level and the hydrogen side liquid level to obtain actual liquid levels, and subtracting the actual liquid levels from each other to obtain a liquid level difference; and S3, the liquid level difference is filtered, and a smooth liquid level difference is obtained and serves as the adjusting basis of the adjusting valve. According to the invention, the liquid level fluctuation quantity in the water electrolysis hydrogen production system is improved.
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