As a key equipment for storing liquid nitrogen and low-temperature samples, the normal operation of liquid nitrogen tanks is crucial for fields such as scientific research and medical treatment. Regular maintenance and upkeep are essential to ensure the stable performance and service life of liquid nitrogen tanks. Here are some suggestions for repairing and maintaining liquid nitrogen tanks:

1、 Daily maintenance

Cleaning the shell: Regularly wipe the liquid nitrogen tank shell with a clean soft cloth to remove dust and dirt. Avoid using corrosive cleaning agents to prevent damage to the surface coating.

Check the vacuum degree: Vacuum degree is a key indicator of the insulation performance of liquid nitrogen tanks. It is recommended to use a vacuum gauge to check the vacuum level once a year. If a decrease in vacuum level is found, professional personnel should be contacted for repair in a timely manner.

Check liquid level: Regularly check the liquid nitrogen level, replenish liquid nitrogen in a timely manner, and avoid sample damage caused by liquid nitrogen depletion.

Check valves and seals: Regularly inspect the valves and seals of the liquid nitrogen tank to ensure they are intact and free from leaks. If damage is found, it should be replaced in a timely manner.

2、 Regular maintenance

Internal cleaning: Every two years or so, the liquid nitrogen tank should be thoroughly cleaned to remove residual impurities and frost. When cleaning, specialized cleaning agents and tools should be used, and the operating procedures should be strictly followed.

Replace desiccant: The desiccant in the liquid nitrogen tank is used to adsorb moisture and keep the interior dry. It is recommended to replace the desiccant once a year to ensure its moisture absorption performance.

Comprehensive inspection: Every three years or so, professional technicians should be invited to conduct a comprehensive inspection of the liquid nitrogen tank, including vacuum degree, sealing, valve performance, etc., and necessary repairs and maintenance should be carried out based on the inspection results.

3、 Precautions

Avoid collision and vibration: The liquid nitrogen tank should be placed in a stable place to avoid collision and vibration, so as not to damage the vacuum layer.

Keep away from heat sources: Liquid nitrogen tanks should be kept away from heat sources and open flames, and avoid direct sunlight to avoid affecting insulation performance.

Safe operation: The liquid nitrogen temperature is extremely low, and protective gloves and goggles should be worn during operation to avoid frostbite.

Professional maintenance: Liquid nitrogen tanks are precision equipment, and in case of malfunction, professional personnel should be contacted for repair. Do not disassemble them by yourself.

4、 Extend service life

Choose high-quality products: When purchasing liquid nitrogen tanks, choose reputable brands and manufacturers to ensure product quality and after-sales service.

Standardized operation: Strictly follow the operating procedures to use liquid nitrogen tanks and avoid human damage.

Regular maintenance: Adhere to regular maintenance, promptly identify and solve problems, and extend the service life of liquid nitrogen tanks.

In short, the maintenance and upkeep of liquid nitrogen tanks is an important task that users need to take seriously. Through daily maintenance, regular upkeep, and standardized operation, the service life of liquid nitrogen tanks can be effectively extended, ensuring their safe and reliable operation.