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.
Low-temperature industrial gas filling stations are equipment used to fill liquid low-temperature industrial gases (such as liquid oxygen, liquid nitrogen, liquid argon, etc.) into gas storage tanks. Below is some basic knowledge about low-temperature industrial gas filling stations:
Tanks Type: Low-temperature industrial gas tanks usually employ double-walled vacuum insulated tanks, where the inner wall is used for storing liquefied gas and the outer wall serves as insulation to reduce heat transfer and the evaporation loss of the liquid gas.
Filling Equipment: Low-temperature industrial gas storage tank filling stations include liquid-gas filling pumps, filling pipelines, flowmeters, pressure sensors, and other equipment. The liquid-gas filling pumps are used to extract liquid gas from storage tanks or gas holders and fill it into the target storage tank.
Filling Process: The operation procedure at the filling station generally includes the following steps: preparation (checking equipment, preparing filling medium), equipment connection (connecting filling pumps, pipelines, etc.), equipment activation (starting the filling pump, adjusting flow and pressure), filling operation (filling the liquid gas into the target storage tank), monitoring and control (monitoring parameters such as pressure and flow during the filling process, ensuring safety and quality), and completion (shutting down equipment, cleaning the work area).
Safety Measures: Strict adherence to relevant safety operating procedures and standards is required during the operation of low-temperature industrial gas storage tank filling stations. Operators must receive training to understand the properties and safety precautions of liquefied gases. Additionally, filling stations should be equipped with safety equipment such as pressure sensors and safety valves to ensure safety during the filling process.
Quality Control: Quality control is essential during the filling process at the filling station, including monitoring parameters such as flow rate, pressure, and temperature of the filling medium to ensure accuracy and quality of the filling.
It is important to note that the operation of low-temperature industrial gas filling stations must be conducted by trained personnel and strictly adhere to relevant operational procedures and safety measures. Furthermore, the design and manufacture of the filling station should comply with applicable standards and regulations to ensure the safety and reliability of the equipment.

Consider the following aspects to differentiate the quality of liquid nitrogen tanks:
Material: Liquid nitrogen storage tanks are typically made of high-strength, corrosion-resistant materials such as stainless steel or aluminum alloy. These materials offer excellent corrosion resistance and mechanical strength, ensuring the tank's long-term stable operation.
Sealability: The liquid nitrogen storage tank should have excellent sealing performance, effectively preventing any leakage of liquid nitrogen. The valves, pipe connections, and other parts of the tank should be designed reasonably to ensure reliable sealing.
Insulation: Liquid nitrogen tanks should have excellent insulation properties to minimize evaporation losses. The insulation layer of the tank should use materials like polyethylene foam to reduce heat conduction and evaporation losses.
Safety: The liquid nitrogen storage tank should possess excellent safety features, including the installation of safety valves, pressure gauges, and other safety equipment, as well as fire-resistant and explosion-proof capabilities. The design and manufacture of the tank must comply with relevant safety standards and regulations.
Service Life: Liquid nitrogen tanks typically have a long service life, capable of withstanding prolonged use and transportation. The manufacturer and reputation are also significant factors in evaluating the service life.
Price and After-Sales Service: The price of liquid nitrogen tanks should be reasonable, and excellent after-sales service is provided. Choosing manufacturers or suppliers with a good reputation and reliable after-sales service ensures access to high-quality products and technical support.
Considering these factors, one can distinguish the quality of liquid nitrogen tanks. When selecting a liquid nitrogen tank, it is recommended to choose one that meets the requirements based on actual needs and usage environment to ensure safe and reliable storage.

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 research, experiments, and more.
Key features and configurations of a 50 cubic meter liquid oxygen storage tank may include the following aspects:
Volume: The 50 cubic meter liquid oxygen tank has a capacity of 50 cubic meters, capable of storing a large quantity of liquid oxygen.
Structure: Liquid oxygen tanks are typically designed with double or multi-layered 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 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 low-temperature state of the liquid oxygen.
Safety Equipment: Liquid oxygen tanks are usually equipped with safety devices such as pressure sensors, temperature sensors, and safety valves to ensure the safe operation of the tank.
It is crucial to strictly adhere 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.

When using a 50-cubic-liter liquid oxygen storage tank, the following safety concerns should be noted:
Tank Pressure Control: Ensure the liquid oxygen pressure within the tank is consistently within the safe range. Monitor and control the tank's pressure to avoid risks from excessive or insufficient pressure.
Leakage and Fire Prevention: Regularly inspect the tank and associated pipelines 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 in the liquid oxygen tank may cause explosion upon contact with flammable materials. Ensure there are no flammables 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 flow of the exhaust system.
Routine Maintenance and Inspection: Regularly maintain and inspect the storage tanks, including cleaning, coating protection, and corrosion prevention. Ensure the structural integrity and safety of the tanks.
Safe Operation and Training: Operators must undergo relevant safety training, familiarize themselves with the safe operation procedures and emergency response measures for liquid oxygen storage tanks. 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 tanks to ensure environmental safety.
Emergency Preparedness: Develop an emergency response plan, including measures for leaks, fires, and explosions. Equip with appropriate emergency and firefighting equipment to handle unforeseen events.
Above are some safety issues to be aware of when using a 50-cubic-liter liquid oxygen storage tank. To ensure safety, it is recommended to follow relevant safety regulations and operation guidelines, and seek assistance and guidance from professionals when necessary.
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