Shandong Zhongjie Special Equipment's main products include: fuel (gas) boilers, organic heat carrier boilers, biomass boilers, waste heat recovery boilers, and other boiler products; vacuum insulated deep-freeze pressure vessels such as LNG storage tanks, oxygen-nitrogen argon storage tanks, CO2 storage tanks, etc.; pressure vessel products such as denitrification engineering equipment, heat storage and energy storage equipment, and complete chemical equipment sets; central air conditioning and HVAC equipment like 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.
Liquid nitrogen storage tanks are equipment used for storing and transporting liquid nitrogen. To ensure safe operation, here are some common operational protection procedures for liquid nitrogen storage tanks:
Tank Installation: Tanks should be installed on a sturdy and level foundation, away from fire sources and flammable materials. Good ventilation around the tank is essential to prevent gas accumulation. The tank should maintain a safe distance from other equipment and buildings.
Liquid Nitrogen Filling: Use appropriate liquid nitrogen transfer equipment when filling to avoid direct contact with liquid nitrogen. Monitor and control the flow and pressure of the liquid nitrogen during the filling process to prevent over-filling and excessive tank pressure.
Tank Pressure Control: Tanks should be equipped with pressure control devices to ensure internal pressure remains within safe limits. Regularly inspect and maintain these devices to ensure proper operation.
Leak Detection and Alarm Systems: Tanks should be equipped with leak detection and alarm systems to promptly detect and alert of any tank leaks. Regularly inspect and maintain the leak detection equipment to ensure proper functioning.
Fire and Explosion Prevention Measures: A fire-resistant buffer zone should be established around the storage tank, keeping it away from fire sources and flammable materials. The tank itself should implement fire and explosion prevention measures, such as fire-resistant coatings and explosion-proof devices, to prevent fires and explosions.
Regular Inspections and Maintenance: Regularly inspect the tank's exterior, valves, and connections to ensure they are intact and undamaged. Conduct regular leak tests and pressure tests to ensure the tank's safety performance meets requirements.
Safety Training and Awareness Enhancement: Conduct safety training for operators to enhance their awareness and ability to safely handle liquid nitrogen tanks. Regularly hold safety training and drills to respond to emergencies.
Manage records and documents: Establish comprehensive management records and documents, including tank usage, inspection, and maintenance records. Regularly review and update management records to ensure safe management and maintenance of the tanks.
Note that the above are some common protective procedures, which may vary depending on the type of storage tank and application. When using liquid nitrogen tanks, operate according to relevant specifications and standards, and consult with experts to ensure safety and effectiveness.

Liquid oxygen storage tanks offer the following advantages:
High Storage Density: Liquid oxygen tanks can store oxygen in a liquid state, which has a higher storage density compared to gas storage. This means more oxygen can be stored in a limited space, providing a longer supply duration.
High Purity Oxygen Supply: Liquid oxygen tanks can provide high purity oxygen supply. The liquid oxygen undergoes refrigeration and purification processes to achieve high purity, meeting the requirements of various applications such as industry and scientific research.
User-friendly: The liquid oxygen tank features ease of use. It is equipped with devices such as level gauges and pressure gauges inside, allowing for convenient monitoring of the liquid level and pressure. Additionally, the tank is fitted with safety devices like pressure relief valves and level alarms to ensure safe operation and usage.
Long-term Storage: Liquid oxygen tanks are suitable for long-term storage of oxygen. The low-temperature properties of liquid oxygen can slow down the evaporation and oxidation of oxygen, extending its storage life. This is beneficial for applications requiring long-term oxygen storage, such as institutions, laboratories, and industrial production.
Overall, liquid oxygen tanks offer advantages such as high storage density, pure oxygen supply, ease of use, and long-term storage. This makes liquid oxygen tanks a reliable choice for oxygen supply, widely used in industrial and scientific research fields.

Liquid nitrogen 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 protect themselves from 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密封性 of the welds.
Insulation Layer Installation: Liquid nitrogen tanks must have excellent insulation properties to minimize heat conduction and retain the low temperature state of liquid nitrogen. The installation of the insulation layer requires materials such as polyester foam and glass wool, ensuring the thickness and quality of the insulation layer.
Proper steps for installing a liquid nitrogen tank are as follows:
Site Preparation: Select an appropriate site for tank installation, ensuring the area is level, strong, and has sufficient 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 and pouring of concrete foundation. The design and construction of the foundation should comply with relevant standards and specifications.
Tank Installation: Transport the tank to the site and install it vertically. Suitable lifting equipment and safety measures must be used during installation to ensure the tank's stability and safety.
Pipe connections: Connect the storage tank to the relevant pipeline system as required, including intake pipes, exhaust pipes, and liquid supply pipes, etc. Sealing and testing must be performed during the connection process to ensure the safety of the pipes.

Liquid argon storage tanks are equipment used for storing and transporting liquid argon, featuring the following characteristics:
Low Temperature Retention Performance: The liquid argon storage tank employs special insulating materials and structural design, effectively maintaining the low temperature state of liquid argon. The tank is internally equipped with an insulating layer, reducing heat conduction and loss, ensuring long-term storage of liquid argon.
High-sealing performance: The liquid argon tank boasts excellent sealing capabilities, effectively preventing leaks and evaporation of liquid argon. The tank's valves, fittings, and seals, etc., are designed and manufactured with precision, ensuring reliable sealing performance.
High strength and corrosion resistance: The liquid argon tank is made of high-strength materials, capable of withstanding the high pressure and low temperature of liquid argon. Both the internal and external surfaces of the tank are specially treated for excellent corrosion resistance, able to withstand corrosion and oxidation from liquid argon.
Safety Performance: The liquid argon storage tank is equipped with multiple safety protection measures, including safety valves, pressure sensors, and level monitoring devices. These devices can monitor and control the tank's pressure, temperature, and level, ensuring the tank operates within a safe range.
Reliability and Stability: The liquid argon storage tank has undergone rigorous design, manufacturing, and testing, offering excellent reliability and stability. The tank can securely store and transport liquid argon for extended periods without compromising its quality or performance.
Easy to operate and maintain: The liquid argon tank is relatively simple to operate and maintain, equipped with easy-to-use valves and fittings. The maintenance work mainly includes regular inspections, cleaning, and repairs, which can extend the service life of the tank.
The performance characteristics of liquid argon storage tanks make them crucial for the storage and transportation of liquid argon, widely used in scientific research, industry, and other fields. When using liquid argon storage tanks, it is essential to strictly adhere to the relevant operational specifications and safety requirements to ensure safe usage.
Our company attaches great importance to technological innovation and R&D design. We possess 1 municipal-level enterprise technology center in Heze City, equipped with non-destructive testing, physical and chemical testing, welding testing, hydrostatic testing, and other testing facilities. We have over 600 various instruments and equipment, including CNC machine tools, X-ray flaw detectors, digital ultrasonic flaw detectors, mechanical property testing machines, chemical analyzers, spectrometers, tensile testing machines, plasma welding machines, etc. The key products and technologies we have developed, such as welding of temperature and pressure vessels, biomass boiler emission reduction, and waste heat utilization, have successively been selected for multiple Shandong Provincial Department of Industry and Information Technology science and technology innovation projects, Shandong Provincial key projects, and Heze City innovation and excellence projects. We have accumulated a total of 27 authorized utility models, 16 authorized inventions, participated in drafting 2 standards, 2 industry standards, and registered 15 trademarks. The technical team of our company, in collaboration with Professor Yajiang Li of Shandong University, has jointly developed deep cryogenic container processing technology, utilizing the international plasma arc + filler wire tungsten inert gas arc welding (PAW-GTAW) technology. After the provincial-level scientific and technological achievement appraisal, the technical level has reached an international standard in the field of deep cryogenic container manufacturing. Choose Zhongjie Special Equipment, and let's create brilliance together!