The QL-3 electrolytic pure water hydrogen generator plays an important role as the core gas supply equipment in laboratory research, energy development, and industrial applications. However, when the equipment needs to be shut down for a long time due to project intermittency or maintenance plans, if scientific maintenance measures are not taken, it can easily lead to problems such as electrode passivation, pipeline blockage, and seal failure. This article will elaborate on the full process maintenance strategy from shutdown preparation to restart recovery, helping technicians effectively extend equipment life and ensure stable operation when restarted.

Pre treatment before shutdown is for protectionQL-3 Electrolytic Pure Water Hydrogen GeneratorThe crucial first step. It is recommended to gradually reduce the working current density 48 hours before the planned shutdown, so that the bubbles in the electrolytic cell can escape in an orderly manner and avoid pressure shocks caused by sudden power outages. When emptying the hydrogen storage tank, a slow release rate should be maintained to prevent stress damage to the pressure vessel caused by rapid depressurization.

The maintenance of electrolytic units requires special attention to detail. When disassembling the anode and cathode plates, anti-static gloves must be worn to avoid contamination of the catalytic coating surface by human oil. For proton exchange membrane (PEM) type electrolytic cells, deionized water should be repeatedly rinsed until the conductivity is below the specified value, and then soaked in a dilute sulfuric acid solution with a concentration of 2% for preservation and storage. It is crucial to regularly check for pinhole leaks in the diaphragm, and the bubble method can be used for integrity testing.

The anti blocking treatment of pipeline systems cannot be ignored. Rinse the entire flow path with anhydrous ethanol to dissolve and accumulate salt crystal deposits. For stubborn scaling areas, EDTA chelating agents can be used for special dredging. All valves should be stored in a semi open state to avoid long-term compression deformation of the sealing ring, which may affect the subsequent sealing performance.

The protection of the power control system is equally important. Before disconnecting the main circuit, it is necessary to measure and record the insulation resistance values of each connection point to ensure that there is no leakage hazard. The lithium battery inside the control module needs to be stored at a state of charge of about 50%. If it is too low, it may cause data loss, while if it is too high, it may pose a risk of bloating.

The selection of environmental storage conditions directly affects the storage quality of the device. Ideally, the equipment should be placed in a constant temperature environment with temperature fluctuations of less than ± 5 ℃/day, and the relative humidity should be controlled within the range of 30% -60%. Regularly powering on for preheating is also an effective protective measure - starting it briefly once a month to dissipate internal moisture through self heating.

Comprehensive testing before restart is a guarantee for safe operation. Conduct a visual inspection to confirm that there are no signs of rodent bites or insect infestations; Then gradually apply pressure to test the airtightness, with a focus on monitoring the leakage at the flange connection; Then verify whether the hydrogen production has returned to the nameplate calibration value through load testing.

The long-term storage of QL-3 electrolytic pure water hydrogen generator requires technical support, from precision components to the overall system. Establishing standardized operating procedures and cultivating a professional operation and maintenance team are essential to truly unleash the scientific research value of equipment. When every device is carefully cared for, it will become the guardian of laboratory safety, rather than just a gas supply tool. This reliability centered operation and maintenance concept is driving the management of special equipment towards intelligence. Through scientific maintenance strategies and standardized operating procedures, we can not only extend the service life of equipment, but also ensure its safe and reliable operation at critical moments.