Shandong Zhongjie Special Equipment specializes in: fuel (gas) boilers, organic heat carrier boilers, biomass boilers, waste heat recovery boilers, and other boiler products; vacuum insulation deep-freeze pressure vessels such as LNG storage tanks, oxygen-nitrogen-argon storage tanks, CO2 storage tanks, etc.; pressure vessel products including denitrification engineering equipment, heat storage and energy storage equipment, and complete chemical equipment; central air conditioning and ventilation equipment such as ground (water) source heat pumps, air source units, water-cooled screw units, and air-cooled modules. Planned products include large-scale energy centers, LNG transport vehicles, LNG tank containers, and other green energy equipment.
To extend the service life of low-temperature liquid storage tanks, the following measures can be taken:
Regular Inspections and Maintenance: Conduct periodic visual inspections of the tank, including the shell, welds, valves, and fittings. Check for any anomalies such as cracks, corrosion, or deformation, and promptly repair or replace damaged parts.
Maintain the insulation layer: Insulation is crucial for the thermal retention of low-temperature liquid storage tanks. Regularly inspect the integrity and insulating properties of the insulation layer, repair or replace damaged insulation materials to ensure the tank's insulating effectiveness.
Control temperature and pressure: The temperature and pressure of the low-temperature liquid storage tank should be maintained within a safe range. Avoid excessive or low temperatures and pressures that may damage the tank. Take appropriate cooling or heating measures to ensure stable temperature and pressure of the liquid.
Corrosion Protection: The outer shell and internal structure of the tank should be protected against corrosion and oxidation. Regular inspections and maintenance of the protective coating are required to ensure its integrity.
Avoid excessive pressure and overfilling: Prevent the internal pressure of the tank from being too high or too low, as well as overfilling with liquid. Excessive pressure and overfilling can lead to structural cracks or damage to the tank.
Regular Cleaning and Drainage: Regularly clean the interior of the tank to remove accumulated impurities and dirt. Conduct regular drainage to prevent damage to the tank from impurities and sediments in the liquid.
Safety Operation and Training: Ensure operators are knowledgeable and skilled in the safe handling of cryogenic liquid storage tanks. Enhance safety training to boost operators' awareness and emergency response capabilities.
Manage records and documents: Establish comprehensive management records and documents, including the usage of storage tanks.

The leak treatment methods for liquid argon storage tanks mainly include the following steps:
Leak Detection: Leakages in liquid argon tanks are identified through odors, gas detection equipment, or abnormal pressure in liquid argon storage tanks.
Confirm Air Leaks: Utilize gas detection instruments or foam leak detectors to pinpoint the exact location of air leaks. Inspect tank interfaces, valves, pipe connections, and other areas to locate the air leak sources.
Seal Air Leaks: Take appropriate actions to stop air leaks based on their location. For instance, for leaks at interfaces, inspect and adjust sealing washers or tighten bolts; for valve leaks, check and replace seals.
Isolate Air Leaks: During the process of dealing with air leaks, it is necessary to isolate the leaky areas to ensure personnel safety. Set up warning signs, restrict access to the area, and take necessary protective measures, such as wearing protective masks and gloves.
Emptying liquid argon: If a leak cannot be repaired immediately or the leak rate is significant, consider emptying the liquid argon. By gradually reducing the pressure of liquid argon in the storage tank, it can be converted to gas, thereby reducing the risk of leakage.
Ventilation Treatment: During the air leakage treatment, ensure adequate ventilation and promptly expel the gases produced by the evaporation of liquid argon. Natural ventilation or the use of ventilation equipment can be employed to exhaust the vaporized gas of liquid argon outdoors.
Safety Assessment and Repair: After the air leakage treatment is completed, conduct a safety assessment to ensure the tank's safety. Based on the assessment results, carry out necessary repairs and maintenance to prevent the recurrence of air leakage.
Note that liquid argon is a low-temperature liquid with a low boiling and freezing point. Caution is required when dealing with air leaks to prevent contact with liquid argon, which can cause cold exposure. When handling air leaks in liquid argon storage tanks, it should be operated by personnel and follow relevant safety operating procedures and standards.

The manufacturing materials for liquid oxygen storage tanks typically require excellent low-temperature resistance and corrosion resistance. The following are common materials used for making liquid oxygen storage tanks:
Stainless Steel: A commonly used material for liquid oxygen storage tanks, stainless steel boasts excellent corrosion resistance and mechanical strength. Common stainless steel grades include 304 and 316.
Aluminum Alloy: Aluminum alloys are also commonly used in the manufacturing of liquid oxygen tanks, offering low density and excellent corrosion resistance. Commonly used aluminum alloy materials include 5083 and 6061 aluminum alloys.
Fiberglass Reinforced Plastic (FRP): FRP is a composite material made of glass fibers and resins. It boasts excellent corrosion resistance and mechanical strength, making it suitable for liquid oxygen storage tanks in some special environments.
碳钢（Carbon Steel）：碳钢是一种常见的储罐制作材料，具有较高的强度和耐腐蚀性。然而，碳钢在液氧环境下容易发生氧化反应，因此需要采取防腐措施。
It's important to note that the choice of materials for liquid oxygen tanks should be determined based on specific application requirements, working conditions, and safety standards. When selecting materials, consider the properties of liquid oxygen and the design requirements of the tank to ensure safety and reliability. Additionally, manufacturers and suppliers often provide material selection advice and technical support.

Liquid Oxygen Storage Tanks are specialized equipment that requires careful attention to safety and understanding of their characteristics when in use. Below are the safety precautions and features of liquid oxygen storage tanks: **Safety Precautions:** - **Operation:** The operation of liquid oxygen storage tanks should be performed by trained and experienced personnel. Operators should be familiar with the tank's structure, performance, and operating procedures, and operate strictly according to the manual and safety regulations. - **Fire Prevention Measures:** Liquid oxygen is highly oxidizing and can easily cause fires and explosions. Open flames and sparks, as well as high-temperature objects, should be prohibited around the storage tank. Fire prevention equipment and fire extinguishers should be established and regularly inspected and maintained. - **Leakage Control:** In the event of a leakage in a liquid oxygen storage tank, immediate measures should be taken to control the leakage. Leaks can lead to the evaporation of liquid oxygen and an increase in oxygen concentration, raising the risk of fire and explosion. A leak detection system should be set up, along with leakage control devices and personal protective equipment. - **Insulation Protection:** Liquid oxygen storage tanks should have good insulation to reduce evaporation and maintain a low temperature. The insulation should be regularly inspected and maintained to ensure its integrity and insulating properties. - **Safety Distance:** A certain safety distance should be maintained around the liquid oxygen storage tank to prevent the spread of fires, explosions, and leaks. The specific requirements for safety distance should be assessed and determined according to local regulations and standards. **Features:** - **High Oxidizing Properties:** Liquid oxygen has high oxidizing properties and can support combustion and cause more intense fires. Therefore, fire and explosion prevention measures must be taken when using liquid oxygen storage tanks. - **High-Pressure Storage:** Liquid oxygen storage tanks typically store high-pressure oxygen, with pressures usually around 2-5 bar. Therefore, when operating and maintaining liquid oxygen storage tanks, attention must be paid to pressure control and the safety of pressure relief devices. - **Low-Temperature Storage:** The liquid oxygen in the storage tank is at a low temperature, usually around -183°C. Therefore, when contacting the liquid oxygen storage tank, appropriate protective measures should be taken.
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