As the core power equipment of hydrogen related systems, the stable operation and safe operation of hydrogen circulation pumps are crucial. The following elaborates on its usage details from multiple dimensions to assist in efficient and safe operations.
1、 Precise preparation before use
1. Environmental verification: The work area needs to be forcibly ventilated to eliminate the risk of hydrogen accumulation; Smoking and static electricity sources are strictly prohibited. Electrical equipment must meet explosion-proof standards and be reliably grounded to eliminate static electricity.
2. System leak detection: Use soap water or specialized leak detectors to carefully inspect the pump body, connecting pipelines, valves, and other interfaces to ensure no leaks. Small bubbles may indicate serious hazards and must be eliminated.
3. Parameter preset: Based on process requirements, accurately set parameters such as inlet/outlet pressure, flow rate, and speed. The initial debugging should be carried out at low speed and low load, gradually increasing to the rated working condition, and closely monitoring vibration and noise.
4. Lubrication confirmation: If it is an oil lubricated model, check the amount and quality of lubricating oil to avoid increased wear caused by oil shortage or deterioration; For oil-free models, attention should be paid to the status of self-lubricating components.
2、 Dynamic control during operation
1. Real time monitoring: Continuously monitor data from pressure gauges, flow meters, and temperature sensors to ensure that all parameters fluctuate within the set range. Abnormal increase in pressure or temperature may indicate blockage or malfunction, and immediate troubleshooting is required.
2. Vibration analysis: Regularly check the vibration amplitude of the pump body. Excessive vibration may be caused by rotor imbalance, bearing damage, or loose foundation, and should be stopped for maintenance in a timely manner.
3. Impurity protection: The purity of hydrogen directly affects the service life of the pump, and the pre filter can intercept particulate matter; If it contains moisture, a dryer should be configured to prevent internal corrosion. Regularly clean or replace filter elements to maintain ventilation efficiency.
4. Emergency preparedness: Inert gas (such as nitrogen) flushing devices should be equipped on site. In the event of a leak, the power should be immediately cut off, ventilation should be turned on, and hydrogen concentration should be diluted. Open flames are strictly prohibited from approaching.
3、 Key points for shutdown and maintenance
1. Orderly shutdown: unload the load first, slowly reduce to low speed, and then shut down, closing the inlet and outlet valves. When not in use for a long time, it is necessary to empty the residual hydrogen gas in the pump and fill it with nitrogen for storage to prevent oxidation.
2. Periodic maintenance: Replace vulnerable parts (such as seals and bearings) according to the manual, clean the impeller and flow channel, and check the insulation performance of the motor. Record maintenance logs and track performance trends.
3. Storage management: The backup pump should be stored in a dry and ventilated place, and the shaft should be turned regularly to prevent bending. Power on and test the machine every certain period to ensure that it is ready for use at any time.
The use of hydrogen circulation pumps should adhere to the principle of "prevention first, strict process control". From early preparation to operation and maintenance, every step needs to be treated rigorously, with particular emphasis on safety protection and parameter monitoring. Through standardized operations and refined management, the efficient and stable operation of equipment can be ensured, and the risk of accidents can be reduced.