Electrolytic hydrogen production system and temperature control method and device thereof

Abstract

The invention discloses an electrolytic hydrogen production system and a temperature control method and device thereof. The method comprises the steps: obtaining a power supply parameter of an electrolytic bath; determining a first temperature regulation control variable according to the power supply parameter; obtaining a working temperature parameter of the electrolytic hydrogen production system; determining a second temperature regulation control variable according to the working temperature parameter; and adjusting the valve opening degree of the cooler according to the first temperature adjustment control variable and the second temperature adjustment control variable. The control variables required for temperature regulation are calculated through the power supply parameters of the electrolytic bath and the working temperature parameters of the system, the working temperature of the hydrogen production system is actively regulated, the temperature regulation response speed is increased, the temperature regulation effect is improved, and the safety performance and the operation reliability of the system are improved.

Description

technical field [0001] The invention relates to the technical field of electrolytic hydrogen production, in particular to an electrolytic hydrogen production system and a temperature control method and device thereof. Background technique [0002] The electrolytic hydrogen production system is a system that uses electrolyzed water as the raw material to produce high-purity hydrogen from water electrolyzers, hydrogen-oxygen liquid separators, coolers, and circulating pumps. [0003] In the electrolytic water hydrogen production system, it is necessary to control the working temperature of the electrolytic hydrogen production equipment. The existing temperature control adopts a passive control method, and a closed-loop control system is composed of a temperature sensor, a control system and a cooler valve. The hydrogen and oxygen generated by electrolysis in the electrolyzer enter the hydrogen-oxygen liquid separator together with the electrolyzed water, and the outlet temper...

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Problems solved by technology

[0004] However, the existing temperature control technology must first detect the temperature signal, and then adjust the valve opening through the control algorithm and the execution unit, which has the following problems: the time from the change of system power to the change of system temperature and being recognized by the temperature sensor is relatively long, And there is a certain delay in the action of the regulating valve, which leads to a long cycle of the entire temperature regulation and a serious lag in response. When the energy of the electrolytic cell is provided by new energy, the fluctuation of the new energy power will cause rapid changes in the input power of the electrolytic cell, and the temperature The adjustment speed cannot meet the requirements of rapid changes in input power, which will affect the temperature adjustment effect and easily cause the temperature in the electrolytic cell to rise, resulting in the shutdown of the equipment due to overtemperature, posing a safety hazard

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