Shandong Zhongjie Special Equipment specializes in: fuel (gas) boilers, organic heat carrier boilers, biomass boilers, waste heat recovery boilers, and other boiler products; vacuum insulated cryogenic pressure vessels such as LNG storage tanks, oxygen/nitrogen/argon storage tanks, CO2 storage tanks; pressure vessel products including denitrification engineering equipment, heat storage and energy storage equipment, complete chemical equipment sets; central air conditioning and HVAC equipment such as ground (water) source heat pumps, air source units, water-cooled screw units, and air-cooled modular units. Planned products include large-scale energy centers, LNG transport vehicles, LNG tank containers, and other green energy equipment.
The manufacturing process for the heads and cylinders of low-temperature storage tanks typically includes the following steps:
Material Preparation: Select suitable materials, such as low-temperature alloy steel or stainless steel, based on design requirements and specifications. Conduct inspections and acceptances to ensure material quality meets the standards.
Sheet Cutting: Sheets are cut according to design dimensions and shapes. Common cutting methods include flame cutting, plasma cutting, or laser cutting, etc.
Bending and Shaping: Cut sheets are bent and shaped to form heads and cylindrical shapes. Common shaping methods include cold bending, hot bending, or hydraulic forming, etc.
Welding: The formed sheets are welded together to create the structure of the head and cylinder. Common welding methods include manual arc welding, gas shielded welding, or laser welding, etc.
Weld Seam Treatment: Process the weld seams after welding, such as sanding, polishing, or applying anti-corrosion coatings, to enhance the quality and appearance of the welds.
Inspection and Acceptance: Conduct inspections and acceptances on the finished caps and cylinders to ensure their quality and compliance with design specifications. Common inspection methods include ultrasonic testing, radiographic testing, or liquid penetrant testing, etc.
Reinforcement and Support: As required, reinforcement and support processing and installation are performed on the heads and cylinders to enhance the structural strength and stability.
Surface Treatment: The heads and cylinders are subjected to surface treatment, such as applying anti-corrosion coatings, hot-dip galvanizing, or polishing, to enhance their corrosion resistance and aesthetic quality.
It is important to note that the manufacturing process of low-temperature storage tanks must comply with relevant standards and regulations to ensure quality and safety during production. Strict adherence to safety operation procedures and the implementation of necessary protective measures are required to ensure the safety of the operators.

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 storage tank, including the shell, welds, valves, and connections. Check for any abnormalities such as cracks, corrosion, or deformation, and promptly repair or replace damaged parts.
Maintain Insulation: Insulation is crucial for the thermal preservation of low-temperature liquid storage tanks. Regularly inspect the integrity and insulating properties of the insulation, repair or replace damaged insulation materials to ensure the tank's insulating effectiveness.
Control temperature and pressure: The temperature and pressure of low-temperature liquid storage tanks should be maintained within a safe range. Avoid excessive or low temperatures and pressures that may damage the tank. Implement appropriate cooling or heating measures to ensure stable temperature and pressure of the liquid.
Corrosion Protection: The outer shell and internal structure of the storage tank should be protected against corrosion and oxidation. Regularly inspect and maintain the protective coating to ensure it remains intact and undamaged.
Avoid excessive pressure and over-filling: Prevent excessive internal pressure or under-pressure in tanks, as well as over-filling with liquids. Excessive pressure and over-filling can lead to structural cracks or damage to the tank.
Regular Cleaning and Drainage: Periodically clean the interior of the tank to remove accumulated impurities and dirt. Regularly drain to prevent damage to the tank from impurities and sediments in the liquid.
Safe Operation and Training: Ensure operators are equipped with knowledge and skills for the safe handling of low-temperature 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 tanks

A 50 cubic meter liquid oxygen tank refers to a storage tank with a capacity of 50 cubic meters. Liquid oxygen tanks are commonly used for storing and supplying liquid oxygen, for applications such as scientific research, laboratory experiments, etc.
Key features and configurations of a 50 cubic meter liquid oxygen tank may include the following aspects:
Volume: A 50 cubic meter liquid oxygen tank can store a substantial amount of liquid oxygen.
Structure: Liquid oxygen tanks are typically designed with double or multi-layer construction, filled with insulating material in between to minimize heat transfer and evaporation of the liquid oxygen. The tank material is usually stainless steel or aluminum alloy, offering excellent corrosion and low-temperature resistance.
Insulation Layer: The insulation layer of liquid oxygen storage tanks is typically made of multi-layered insulating materials, such as polyethylene foam, glass fiber, and vacuum layers, to minimize heat transfer and evaporation of liquid oxygen.
Temperature Control System: Liquid oxygen tanks are typically equipped with a temperature control system to regulate the tank's temperature, maintaining the low-temperature state of the liquid oxygen.
Safety Equipment: Liquid Oxygen Storage Tanks are typically equipped with safety devices such as pressure sensors, temperature sensors, and safety valves to ensure safe operation.
It is crucial to adhere strictly to the relevant safety regulations and operational guidelines when using liquid oxygen tanks to ensure their safe operation and usage. Liquid oxygen is highly flammable, so fire prevention measures must be taken when using liquid oxygen tanks, and it is essential to ensure there are no ignition sources nearby.

Liquid oxygen tanks are used for storing and supplying liquid oxygen as fuel and oxidizer, playing a crucial role in launch propulsion systems and more. Industrial Production: Liquid oxygen is used as an oxidizer in industrial production for processes such as combustion, oxidation, and oxygen supply. Liquid oxygen tanks are used to store and supply liquid oxygen to meet the needs of industrial applications like metal cutting, welding, and chemical reactions. Equipment: Liquid oxygen tanks are used in equipment to supply oxygen, such as oxygen therapy, oxygen inhalation, and operating rooms. These tanks provide high-purity oxygen while maintaining low temperatures to meet the equipment's oxygen requirements. Laboratory Research: Liquid oxygen tanks are used in scientific research and laboratories to provide liquid oxygen as experimental materials and reagents. The low temperature and high purity of liquid oxygen make it widely applicable in laboratories for fields such as materials science, chemical reactions, and biomedical research. In summary, liquid oxygen tanks are important in various fields including industrial production, equipment, and laboratory research, providing storage and supply functions for liquid oxygen at application sites.
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