1. Chemical nitrogen generatorRegularly replace the filter element to intercept the invasion of impurities
Core components: pre filter element, precision filter element, and activated carbon filter element in the air purification system.
Operation points:
The pre filter element should be replaced every 2000-4000 hours to shorten the cycle in harsh environments;
The precision filter element should be replaced every 6-12 months, and if the pressure difference exceeds 0.05MPa, it should be replaced immediately;
The activated carbon filter cartridge should be replaced every 6-12 months, and it will become ineffective after adsorption saturation.
Risk Warning: Filter blockage can cause pressure drop, and impurities entering the molecular sieve can cause irreversible damage.
2. Strictly control the refrigerated dryer and dryer to prevent moisture from entering
Core components: refrigerated dryer, adsorption dryer.
Operation points:
Daily discharge of condensate water to prevent water accumulation from corroding equipment;
Check the drainage valve weekly to ensure it is functioning properly and prevent water droplets from entering the molecular sieve.
Risk warning: Moisture can cause molecular sieve pulverization and decrease adsorption efficiency.
3. Monitor pressure and flow, and warn of system abnormalities
Core parameters: Air compressor outlet pressure (5-8 bar), adsorption tower pressure (4-7 bar), nitrogen flow rate.
Operation points:
Record the pressure gauge reading daily and observe the fluctuation range;
Use a flow meter to monitor nitrogen production and check for valve or pipeline leaks in case of abnormalities.
Risk Warning: Abnormal pressure may indicate unstable gas supply or system blockage.
4. Regularly check the purity of nitrogen and identify the source of performance degradation
Core tool: Nitrogen analyzer.
Operation points:
Weekly testing of nitrogen purity to ensure compliance with set standards (such as 99.99%);
When the purity decreases, check the quality of the gas source or the status of the molecular sieve.
Risk Warning: Insufficient purity can affect the effectiveness of chemical reactions and even lead to safety accidents.
5. Check the sealing of the valve to prevent internal leakage
Core components: pneumatic valve, solenoid valve, one-way valve.
Operation points:
Test the valve switch performance every 6 months to ensure no jamming or leakage;
When a leak is detected, clean the valve core or replace the seal.
Risk warning: Valve failure can cause disruption in the nitrogen production process and a decrease in nitrogen purity.
6. Activate or replace the molecular sieve to restore the adsorption core performance
Core component: Carbon molecular sieve (the "heart" of the nitrogen generator).
Operation points:
Check the performance of the molecular sieve every 3-5 years, and activate or replace it when the technical indicators decrease;
Wear protective equipment during replacement to avoid inhaling dust.
Risk Warning: Molecular sieve failure can lead to a sharp decrease in nitrogen production and non-compliance with purity standards.
7. Clean the surface and heat dissipation holes of the equipment to ensure efficient heat dissipation
Operation points:
Wipe the equipment casing with a dry cloth daily and avoid using corrosive cleaning agents;
Clean the heat dissipation holes weekly to prevent dust accumulation from affecting heat dissipation.
Risk Warning: High temperatures can accelerate the aging of electronic components and shorten the lifespan of equipment.
8. Optimize the operating environment to avoid temperature, humidity, and dust hazards
Environmental requirements: temperature 5-40 ℃, humidity<80%, good ventilation, avoid direct sunlight.
Operation points:
Install an intake filter and shorten the filter replacement cycle in dusty environments;
Avoid installing equipment in high-temperature and humid areas to prevent electrical system short circuits.
Risk Warning: Adverse environments can accelerate component wear and increase failure rates.
9. Establish a systematic maintenance plan that covers the entire lifecycle
Maintenance cycle:
Daily inspection: Check instrument readings and record operating data;
Weekly inspection: Check the status of the filter and listen to the sound of the equipment running;
Monthly inspection: Check for leaks in pipeline joints and clean the surface of equipment;
Annual inspection: Comprehensive maintenance by professional personnel, including molecular sieve performance testing and valve maintenance.
Risk Warning: Lack of planned maintenance can lead to small problems escalating into major failures.
10. Chemical nitrogen generatorTrain operators to standardize operations and emergency response
Training content:
Correct startup and shutdown sequence (such as restarting when the compressed air pressure reaches 0.7 MPa or above);
Common troubleshooting methods (such as air leakage and abnormal pressure);
Emergency response procedures (such as shutdown inspection in case of nitrogen purity alarm).
Risk Warning: Incorrect operation can cause equipment damage and even lead to safety accidents.