Device for monitoring electric leakage discharge of electrolytic cell and monitoring method

By combining a microphone and a PLC controller, leakage discharge in the electrolytic cell is monitored in real time, solving the problems of slow response and high false alarm rate in existing technologies, and enabling rapid identification and safe interception of early faults.

CN121992422APending Publication Date: 2026-05-08JIANGSU HYDROGEN CORE POWER TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202610344096.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-03-20
Publication Date
2026-05-08

AI Technical Summary

Technical Problem

Existing technologies suffer from slow response and high false negative rates in monitoring leakage discharge in proton exchange membrane electrolyzers, making early warning impossible and posing a risk of explosion or serious malfunction.

Method used

The system uses a microphone to collect sound signals from the electrolytic cell in real time. The signal is amplified and interference is filtered out by a signal conditioner. The built-in algorithm of the PLC controller is used to calculate the sound pressure level RMS value, the proportion of high-frequency energy, and the rise slope of the sound pulse in real time, triggering alarm and emergency stop commands to block the flow of materials.

Benefits of technology

It enables timely monitoring of leakage discharge in electrolytic cells with a low rate of missed detection. It can quickly identify and block material flow before the signs of a fault appear, thus improving operational safety.

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Abstract

The invention relates to a device for monitoring electric leakage discharge of an electrolytic bath and a monitoring method. The device comprises a power grid power supply unit, a contactor, a hydrogen production power supply, a proton exchange membrane electrolytic bath body, at least one sound pickup, a controller, an alarm unit, a valve control unit and a signal conditioner, the power grid power supply unit is connected with the hydrogen production power source through the contactor, the proton exchange membrane electrolytic bath body is connected with the hydrogen production power source and the valve control unit, and the sound pick-up is arranged on the periphery of the proton exchange membrane electrolytic bath body and used for collecting sound signals in the operation process of the proton exchange membrane electrolytic bath body. The sound pickup is connected with the signal conditioner, and the controller is connected with the signal conditioner, the alarm unit, the valve control unit and the contactor, so that timely monitoring can be realized, the omission ratio is low, and the operation safety can be improved.
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