Shandong Zhongjie Special Equipment's main products include: fuel (gas) boilers, organic heat carrier boilers, biomass boilers, waste heat boilers, and other boiler products; vacuum insulation cryogenic pressure vessels such as LNG tanks, oxygen-nitrogen-argon tanks, and CO2 tanks; pressure vessel products such as denitrification engineering equipment, heat storage equipment, and 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.
Zhongjie Special Tank Co., Ltd. is a company engaged in the manufacturing of low-temperature liquid storage tanks. They offer low-temperature liquid storage tanks in various specifications and capacities, including liquid nitrogen tanks, liquid oxygen tanks, liquid argon tanks, and more.
The medium-temperature liquid storage tanks from Zhongjie are made of high-quality materials and advanced manufacturing techniques, ensuring the tank's strength and sealing integrity. The internal design utilizes special insulation materials and structures, effectively reducing liquid evaporation loss.
The Zhongjie special-purpose low-temperature liquid storage tank features the following characteristics:
High safety: Tanks are made of materials with excellent pressure and sealing performance, capable of safely storing low-temperature liquids.
Low evaporation loss: Insulating materials and structural design used inside the tank effectively reduce liquid evaporation loss, enhancing the economic efficiency of the tank.
A variety of sizes and capacities available: Zhongjie Special Equipment offers a range of sizes and capacities for low-temperature liquid storage tanks to meet diverse customer requirements.
Customized Design: According to specific customer requirements, ZJET can provide customized design and manufacturing services to cater to various application scenarios.
Quantitative manufacturing process: Zhong Jie is equipped with advanced manufacturing equipment and a skilled technical team, ensuring the quality and performance of the storage tanks.
In summary, Zhongjie Special Equipment's low-temperature liquid storage tanks offer high safety, low evaporation loss, and a variety of specifications, making them suitable for storage and transportation needs of low-temperature liquids.

Maintenance and precautions for liquid nitrogen tanks are crucial; here are some key points:
Maintenance:
Regular Inspections: Regularly inspect the exterior, valves, pipelines, and other components of the liquid nitrogen storage tank to ensure they are intact and undamaged. Pay special attention to check for any leaks, corrosion, or other forms of damage.
Clean Storage Tanks: Regularly clean liquid nitrogen storage tanks to remove internal dirt and sediments. Use appropriate cleaning agents and tools, and follow the cleaning procedures and safety operating protocols.
Nitrogen Liquid Top-Up: Regularly replenish nitrogen liquid as needed to maintain adequate storage in the tank, ensuring it meets usage requirements.
Maintain Pressure: Regularly inspect the liquid nitrogen tank's pressure to ensure it stays within the safe range. Conduct pressure tests and adjustments as necessary.
Corrosion Protection: Appropriate corrosion prevention measures are taken based on the material and usage environment of the storage tank to extend its service life. For example, applying anti-corrosion coatings, regular corrosion protection treatments, etc.
Cautionary Notes:
Safe Operation: When using liquid nitrogen tanks, strict adherence to safety operating procedures and standards is mandatory. Operators must be trained, familiar with the properties of liquid nitrogen and safety operating requirements, as well as the tank equipment and operational process.
Protective Measures: When using liquid nitrogen tanks, it is essential to take necessary protective measures, such as wearing protective gloves and suits. Avoid direct contact with liquid nitrogen to prevent frostbite.
Leak Control: Regularly inspect the liquid nitrogen storage tank for leaks, and equip with leak detectors and alarm systems. In case of a leak, immediate action should be taken to control the leak and carry out repairs.
Ventilation Requirements: In enclosed spaces where liquid nitrogen storage tanks are used, adequate ventilation must be ensured.

The reason for occasional venting of liquid oxygen tanks is primarily to maintain the safe pressure range within the tank and prevent excessive pressure buildup. The following are several scenarios where liquid oxygen tanks may occasionally vent:
Pressure Control: During the operation of the liquid oxygen tank, due to the evaporation of liquid oxygen and temperature changes, the pressure inside the tank will vary. To maintain a safe pressure range within the tank, regular venting is required to control the tank's pressure within the safe limits.
Prevent Overpressure Accumulation: During oxygen filling or usage, external factors or operational errors may cause the pressure inside the liquid oxygen tank to exceed the safe limit. To prevent overpressure accumulation, timely venting is required to alleviate the pressure within the tank.
Prevent Gas Accumulation: There may be some gas impurities, such as air and water vapor, in the liquid oxygen tank. These gases can condense into liquids or solids at the low temperatures of liquid oxygen, blocking pipelines or affecting the normal operation of the tank. Regularly releasing gas can expel these impurities, maintaining the tank's cleanliness and unobstructed flow.
It is important that the discharge operation of liquid oxygen be performed by authorized personnel and strictly adhere to the relevant operational procedures and safety measures. During the discharge process, precautions should be taken to prevent any leakage of liquid oxygen and its contact with, ensuring the safety and reliability of the operation.

Liquid nitrogen storage tanks feature the following characteristics during the construction process:
Low-Temperature Construction: The construction of liquid nitrogen tanks must be carried out in a low-temperature environment, as the boiling point of liquid nitrogen is low, approximately -196 degrees Celsius. Construction personnel must take appropriate protective measures, such as wearing thermal protective clothing and gloves, to safeguard against low-temperature injuries.
Welding Technology: A substantial amount of welding is required during the manufacturing process of liquid nitrogen tanks, including the connections of the tank walls, bottom plate, top plate, and welds. Welding technology is crucial for the quality and safety of the tank, necessitating the use of appropriate welding methods and materials to ensure the strength and sealability of the welds.
Insulation Layer Construction: Liquid nitrogen storage tanks must have excellent insulation properties to reduce heat conduction and maintain the low-temperature state of liquid nitrogen. The construction of the insulation layer requires materials such as polyester foam and glass wool, ensuring the thickness and quality of the insulation layer.
Proper installation steps for a liquid nitrogen tank are as follows:
Site Preparation: Select an appropriate site for tank installation, ensuring it is level, sturdy, and has adequate load-bearing capacity. The site should be kept away from flammable, explosive materials, and other hazardous sources.
Foundation Construction: Construction of the foundation based on the tank's dimensions and weight, including excavation of the foundation pit, pouring concrete foundation, etc. The design and construction of the foundation should comply with relevant standards and regulations.
Tank Installation: Transport the tank to the site and perform a vertical installation. Appropriate lifting equipment and safety measures must be used during the installation process to ensure the stability and safety of the tank.
Pipe connections: Connect the storage tank to the relevant pipeline system as required, including intake pipes, exhaust pipes, and liquid supply pipes. Sealing and testing must be conducted during the connection process to ensure pipeline safety.
ZJ Special Equipment upholds the great vision of "realizing employees' dreams, creating value for customers, and striving for the prosperity and strength of our motherland," wholeheartedly devoting itself to the development of green energy equipment. We offer the society high-quality and cost-effective products and services!