Shandong Zhongjie Special Equipment (formerly Heze Boiler Factory Co., Ltd.) was established in 2001, located at No. 2218 Jinnan Road, Development Zone, Heze City, with a registered capital of 50 million yuan and total assets of 500 million yuan. The company has 7 business centers: boilers, deep-freeze containers, pressure vessels, central air conditioning, engineering installation, international trade, and Internet of Things. It has three factory sites on Jinnan Road, East Changjiang Road, and Bohai Road, covering a total of 200,000 square meters, with the main workshop spanning 83,000 square meters. It currently employs 710 people, including 247 engineers and technicians and 82 intermediate-level technicians. In December 2016, it was recognized as a "High-tech Enterprise" by the Science and Technology Department. In June 2021, it was identified as a "Specialized and New Enterprise in Shandong Province" by the Ministry of Industry and Information Technology. In June 2022, it was recognized as a "Gazelle Enterprise in Shandong Province" and in August 2022, it was identified as a "Specialized and New Small Giant Enterprise" by the Ministry of Industry and Information Technology.
Maintaining and being aware of liquid nitrogen tanks is crucial; here are some key points:
Maintenance:
Regular Inspections: Conduct regular inspections of the liquid nitrogen tank's exterior, valves, pipes, and other components to ensure they are in perfect condition. Pay special attention to check for any leaks, corrosion, or other damage.
Clean Storage Tanks: Regularly clean liquid nitrogen storage tanks to remove internal dirt and deposits. Use appropriate cleaning agents and tools, and follow the cleaning procedures and safety operating protocols.
Liquid Nitrogen Refill: Refill liquid nitrogen regularly as needed. Ensure an adequate storage amount of liquid nitrogen in the tank to meet usage requirements.
Maintain Pressure: Regularly inspect the liquid nitrogen tank's pressure to ensure it stays within the safe range. Perform pressure tests and adjustments as needed.
Corrosion Prevention: Depending on the material of the storage tank and its operating environment, appropriate corrosion prevention measures are taken to extend the service life of the tank. For instance, applying corrosion-resistant coatings, conducting regular corrosion 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 operation requirements, and be acquainted with the tank equipment and operational procedures.
Protective Measures: When using liquid nitrogen tanks, necessary protective measures must be taken, such as wearing protective gloves and suits. Avoid direct contact with liquid nitrogen to prevent frostbite.
Leak Control: Conduct regular inspections of liquid nitrogen tanks for leaks and equip with leak detection and alarm systems. In case of a leak, take immediate action to control the leak and perform repairs.
Ventilation Requirements: In enclosed spaces where liquid nitrogen tanks are used, adequate ventilation must be ensured.

The safe distance between liquid oxygen storage tanks and buildings is typically specified by relevant safety standards and regulations to ensure the safety buffer and fire separation between them. The following is a general reference for the safe spacing between liquid oxygen storage tanks and buildings:
Horizontal Clearance: The horizontal clearance between the liquid oxygen storage tank and the structure is typically required to maintain a certain distance to prevent danger to the structure in case of tank leakage or accidents. The specific clearance distance should be determined based on factors such as the tank's capacity, pressure, and the nature of the structure, with a general recommendation to maintain a safe distance.
Vertical clearance: The vertical distance between the liquid oxygen storage tank and the building must also comply with relevant safety requirements. This is to prevent any danger to the building in case of tank leakage or accidents. The specific clearance requirements will be determined based on factors such as the tank's capacity, pressure, and the height of the building, with a general recommendation to maintain a safe distance.
Fire Protection Distance: Liquid oxygen has a high oxygen content and flammability, and in the event of a leak or accident, it may cause a fire. Therefore, a certain fire protection distance must be maintained between the liquid oxygen storage tank and any buildings to ensure that the fire does not spread or pose a danger to the structures. Specific fire protection distance requirements

Low-temperature liquid storage tanks are equipment used for storing low-temperature liquids, commonly used for storing liquid oxygen, liquid nitrogen, liquid argon, and other low-temperature liquids. These liquids are in a gaseous state at room temperature but are cooled to a liquid state at low temperatures for better storage and use. Low-temperature liquid storage tanks are typically made of high-strength materials like stainless steel or aluminum alloys to withstand low temperatures and high pressures. The interior usually has an insulating layer to reduce evaporation of the liquid and maintain a low-temperature state. Applications of low-temperature liquid storage tanks include but are not limited to the following: They are widely used in rocket and spacecraft fuel and propulsion systems, such as liquid oxygen, liquid nitrogen, and liquid hydrogen tanks, for storing and supplying low-temperature liquids as fuel and oxidizers to propel the launch and operation of the vehicle. Industrial Production: Low-temperature liquid storage tanks are used in industrial production for storing and supplying low-temperature liquids like liquid oxygen, liquid nitrogen, and liquid argon. These liquids are used as coolants, feedstocks for gas separation, and raw materials for chemical reactions in industrial production. Medical Applications: Low-temperature liquid storage tanks are used in the medical field to store and supply liquid oxygen for oxygen therapy, oxygen inhalation, and operating rooms. Laboratory Research: Low-temperature liquid storage tanks are used in scientific research and laboratories to provide low-temperature liquids as coolants and refrigerants. They are used for cooling laboratory equipment, material research, superconductivity, and low-temperature physics, among other areas. In summary, low-temperature liquid storage tanks are widely used in aerospace, industrial production, and laboratory research fields to store and supply low-temperature liquids, meeting the needs of various industries.

When using a 50-cubic-liter liquid oxygen tank, the following safety precautions should be observed:
Tank Pressure Control: Ensure the liquid oxygen pressure within the tank is consistently maintained within a safe range. Monitor and control the tank's pressure to avoid risks associated with either excessive or insufficient pressure.
Leakage and Fire Prevention: Regularly inspect the tank and associated piping for seal integrity to prevent liquid oxygen leakage. Liquid oxygen is highly flammable and fire prevention measures must be implemented to ensure no ignition sources are present around the tank.
Explosion-proof Measures: Oxygen inside the liquid oxygen storage tank can ignite when in contact with flammable materials, potentially causing an explosion. Ensure there are no flammable items around the tank and implement explosion-proof measures, such as explosion-proof electrical equipment and static grounding.
Safety valves and exhaust systems: Tanks should be equipped with safety valves and exhaust systems to prevent overpressure situations. Ensure the proper functioning of the safety valves and the unobstructed operation of the exhaust system.
Routine Maintenance and Inspection: Regularly maintain and inspect the storage tanks, including cleaning, coating protection, and anti-corrosion treatment. Ensure the structural integrity and safety of the tanks.
Safety Operation and Training: Operators must undergo relevant safety training, familiarize themselves with the safe operation procedures for liquid oxygen tanks and emergency response measures. Adhere to the correct operational steps to ensure safe operation.
Environmental Monitoring: Regularly monitor the oxygen concentration and temperature, among other environmental parameters, around the storage tank to ensure safety.
Emergency Preparedness: Develop an emergency response plan including measures for leaks, fires, and explosions. Equip with appropriate emergency equipment and firefighting supplies to handle unforeseen incidents.
Above are some safety issues to be aware of when using a 50-cubic liquid oxygen tank. To ensure safety, it is recommended to follow relevant safety regulations and operation guidelines, and seek assistance and guidance from experts when necessary.
Shandong Zhongjie Special Equipment, welcome customers to our factory for cooperation discussions.