Shandong Zhongjie Special Equipment Co., Ltd. specializes in the following products: fuel (gas) boilers, organic heat carrier boilers, biomass boilers, waste heat recovery boilers, and other boiler products; vacuum insulation cryogenic pressure vessels such as LNG tanks, oxygen/nitrogen/argon tanks, and CO2 tanks; pressure vessel products including denitrification engineering equipment, heat storage and energy storage equipment, and complete chemical equipment; central air conditioning and ventilation 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.
Oxygen storage tanks and liquid oxygen storage tanks are equipment used for storing oxygen, but they have some distinctions: Storage form: Oxygen storage tanks are typically used for storing gaseous oxygen, while liquid oxygen storage tanks are for storing liquid oxygen. Oxygen is in a gaseous state at room temperature but is cooled to a liquid state at low temperatures for more efficient storage and use. Storage pressure: Oxygen storage tanks usually store high-pressure oxygen, with pressure generally around 200-300 bar. Liquid oxygen storage tanks store liquid oxygen at a lower pressure, typically around 2-5 bar. Storage capacity: Oxygen storage tanks generally have smaller capacities, suitable for personal or small-scale use. Liquid oxygen storage tanks have larger capacities, suitable for industrial or large-scale use. Storage method: Oxygen storage tanks store oxygen in a gaseous form, via compressed gas storage. Liquid oxygen storage tanks store oxygen in a liquid form, converting it to liquid by cooling it to below its boiling point. Safety requirements: Due to the highly oxidizing nature of liquid oxygen, liquid oxygen storage tanks require stricter safety requirements in design and use. They usually need to have good thermal insulation, leak control, and fire prevention measures to ensure safe operation. It should be noted that the specific design and specifications of oxygen and liquid oxygen storage tanks may vary depending on different regions and application sites. When using these tanks, it is important to follow applicable regulations, standards, and safety guidelines, and to cooperate with local regulatory authorities and personnel to ensure the safety and reliability of the tanks.

Tanks are specialized storage equipment, and to ensure their safe operation, regular inspections and maintenance are necessary. Here are common inspection methods for tanks:
Appearance Inspection: Regularly inspect the tank's exterior for any signs of leakage, corrosion, deformation, or cracks. Pay special attention to the integrity of the tank's joints, welds, and valves.
Pressure Test: Conduct pressure tests to inspect the tank's sealing performance and pressure resistance. Use a pressure gauge or pressure sensor to perform pressure tests on the tank to ensure it can withstand the designed pressure.
Ultrasonic Testing: Ultrasonic testing can be used to detect corrosion and cracks in storage tank walls. By scanning the tank with an ultrasonic probe, potential defects and issues are identified.
Magnetic Particle Inspection: Magnetic particle inspection can be used to detect cracks and weld quality in tank walls. By applying magnetic particles to the tank surface and then using a magnetic particle inspection device to observe for particle accumulation, one can determine if there are any cracks or weld issues.
Environmental Monitoring: Conduct regular environmental monitoring around storage tanks, including testing for gas concentrations and temperatures, to ensure the safety of the surrounding environment.
Note that tank inspections should be conducted by a certified inspection agency or qualified inspectors. The frequency and methods of inspection should be determined based on the tank's usage, size, and relevant regulatory requirements. Regular inspections and maintenance can help identify potential issues early on, ensuring the safe operation of the tank.

The normal pressure range for liquid oxygen tanks is typically between 2-5 bar. This range refers to the oxygen pressure inside the tank, which is necessary to maintain the liquid state of the oxygen. The design and manufacturing of liquid oxygen tanks must comply with relevant standards and specifications to ensure they can safely withstand this pressure range under normal operating conditions. It should be noted that the pressure in liquid oxygen tanks can be affected by various factors, such as the temperature of the liquid oxygen, tank design, and materials. In actual use, the normal pressure range of the tank should be determined based on the specific tank design and operational requirements, and operations and maintenance should be carried out in accordance with relevant regulations and standards. Additionally, liquid oxygen tanks should be equipped with pressure control devices, such as pressure valves or relief devices, to ensure that the internal pressure of the tank remains within a safe range. These devices can automatically release gas when pressure exceeds the set value, ensuring the safety of the tank. Regular inspections and maintenance of these pressure control devices should be conducted when using liquid oxygen tanks to ensure they function properly.

Several reasons explain why low-temperature liquid storage tanks have been at the peak in recent years:
Rising Demand: With the development of industries, scientific research, and other fields, there is an increasing demand for low-temperature liquids. Low-temperature liquid storage tanks can effectively store and supply liquefied oxygen, nitrogen, and other low-temperature liquids, meeting the needs of various sectors.
Technological Advancements: In recent years, the manufacturing and material technologies for low-temperature liquid storage tanks have continuously improved and innovated. The application of new insulating materials, advanced refrigeration systems, and safety control devices has enhanced the performance and safety of the tanks, making them more reliable and secure.
Increased environmental awareness: Low-temperature liquid storage tanks can effectively store and utilize low-temperature liquids, reducing energy waste and environmental pollution. Against the backdrop of rising environmental awareness, low-temperature liquid storage tanks, as an environmentally friendly and energy-saving device, have gained more attention and application.
Emerging Application Fields: The demand for low-temperature liquid storage tanks is increasing in emerging application fields. For instance, the application of liquid nitrogen in frozen food, biopharmaceuticals, and semiconductor manufacturing is becoming more widespread, driving the development of low-temperature liquid storage tanks.
Policy Support: The government has provided support and encouragement for the development of low-temperature liquid storage tanks. Through policy guidance and financial support, the industry has been promoted and expanded.
In summary, the reasons for the peak popularity of low-temperature liquid storage tanks in recent years include increasing demand, technological advancements, heightened environmental awareness, the development of new application fields, and policy support. These factors have collectively propelled the rapid growth of the low-temperature liquid storage tank industry.
Zhongjie Special Equipment upholds the great 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 products and services with high cost-performance!