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-freezing containers, pressure vessels, central air conditioning, engineering installation, international trade, and Internet of Things. It has three factory areas on Jinnan Road, East Yangtze Road, and Bohai Road, covering a total of 200,000 square meters. The main workshop has an area of 83,000 square meters. It currently employs 710 people, including 247 engineers and technicians and 82 middle-level technical personnel. 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" by the Ministry of Industry and Information Technology. In August 2022, it was identified as a "Specialized and New Small Giant Enterprise" by the Ministry of Industry and Information Technology.
Liquid Oxygen Storage Tank is a specialized piece of equipment that requires particular attention to safety and understanding of its characteristics during use. Below are the precautions and features for using a liquid oxygen storage tank: **Precautions:** - Operation: The operation of a liquid oxygen storage tank should be conducted by trained and experienced personnel. Operators should be familiar with the tank's structure, performance, and procedures, and operate strictly according to the manual and safety regulations. - Fire Prevention: Liquid oxygen is highly oxidizing and prone to causing fires and explosions. Open flames and sparks should be prohibited around the tank, and high-temperature objects should be kept away. Fire protection equipment and fire extinguishers should be installed and regularly checked and maintained. - Leak Control: In the event of a leak, immediate action should be taken to control the leak. Leaks can lead to oxygen evaporation and increased oxygen concentration, raising the risk of fire and explosion. A leak detection system should be established, along with leak control devices and personal protective equipment. - Insulation Protection: Liquid oxygen storage tanks should have good insulation to minimize evaporation and maintain low temperatures. The insulation should be regularly inspected and maintained to ensure its integrity and insulating performance. - Safety Distance: A certain safety distance should be maintained around the tank to prevent the spread of fires, explosions, and leaks. Specific safety distance requirements should be assessed and determined according to local regulations and standards. **Features:** - High Oxidizing: Liquid oxygen is highly oxidizing, supporting combustion and causing it to burn more intensely. Therefore, fire and explosion prevention measures must be taken with extra caution when using liquid oxygen storage tanks. - High Pressure Storage: Liquid oxygen storage tanks typically store high-pressure oxygen, usually around 2-5 bar. Hence, pressure control and the safety of pressure relief devices should be considered during operation and maintenance. - Low Temperature Storage: Liquid oxygen in the storage tank is at a low temperature, generally around -183°C. Therefore, when handling the tank, appropriate protective gear should be worn.

The temperature difference between the interior and exterior of a low-temperature liquid storage tank depends on various factors, including the tank's design, insulation performance, the temperature of the liquid, and the ambient temperature outside. Generally speaking, the temperature inside the low-temperature liquid storage tank is much lower than that of the external environment.
Low-temperature liquid storage tanks are commonly used for storing liquefied nitrogen, oxygen, argon, and other low-temperature liquids. These liquids have very low boiling points, usually below -100 degrees Celsius. To maintain the low temperature of the liquids, the storage tank must have excellent insulation properties to minimize heat transfer and evaporation loss.
Low-temperature liquid storage tanks typically offer a smaller temperature variance. Generally, the internal temperature of the tank can be maintained near the boiling point of the liquid, usually several tens of degrees Celsius lower than the ambient temperature. The specific temperature variance depends on the tank's design and insulation properties, as well as the characteristics of the liquid.
It's important to note that the temperature differences in low-temperature liquid storage tanks may change over time. As time goes by, the insulating material's performance may be affected by wear or aging, leading to increased temperature differences. Therefore, regular inspections and maintenance of the tank's insulation are crucial to ensure its effective and stable insulating performance.

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, applicable in fields such as research, experiments, and more.
Key features and configurations of a 50 cubic meter liquid oxygen storage tank may include the following aspects:
Volume: A 50-cubic-meter liquid oxygen tank has a capacity of 50 cubic meters and can store a large quantity of liquid oxygen.
Structure: Liquid oxygen tanks commonly feature a double or multi-layered design, filled with insulating material in the middle to reduce heat transfer and evaporation of liquid oxygen. The tank material is typically made of stainless steel or aluminum alloy, offering excellent corrosion resistance and low-temperature performance.
Insulation Layer: The insulation layer of liquid oxygen tanks typically employs multi-layered insulation materials, such as polyethylene foam, glass fiber, and vacuum layers, to reduce heat transfer and the 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低温 state of the liquid oxygen.
Safety Equipment: Liquid oxygen tanks are typically equipped with safety devices such as pressure sensors, temperature sensors, and safety valves to ensure safe operation of the tank.
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 use. 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.

The manufacturing process for the heads and cylinders of low-temperature storage tanks typically includes the following steps:
Material Preparation: Select suitable materials based on design requirements and specifications, such as low-temperature alloy steel or stainless steel. Inspect and verify the materials to ensure they meet the required quality 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 forming: Cut sheets are bent and formed to create shapes for caps and cylinders. Common forming methods include cold bending, hot bending, or hydraulic forming, etc.
Welding: Welds the shaped sheets together to form 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.
Strengthening and Support: As required, processing and installation of reinforcing and supporting elements on the head and cylinder sections to enhance structural strength and stability.
Surface Treatment: The heads and cylinders undergo surface treatment, such as applying anti-corrosion coatings, hot-dip galvanizing, or polishing, to enhance their corrosion resistance and aesthetic quality.
Note that the manufacturing process of low-temperature storage tanks must comply with relevant standards and regulations to ensure the quality and safety of the production process. Strict adherence to safety operating procedures and the implementation of necessary protective measures are essential to ensure the safety of the operators.
Zhongjie Special Equipment adheres to the grand vision of "realizing employees' dreams, creating value for customers, and striving for the prosperity and strength of our motherland," and is dedicated to the development of the green energy equipment industry. We offer society high-quality products and services at competitive prices!