Shandong Zhongjie Special Equipment Co., Ltd. specializes in the following products: fuel (gas) boilers, organic heat carrier boilers, biomass boilers, waste heat boilers, and other boiler products; vacuum insulated deep-chilled pressure vessels such as LNG storage tanks, oxygen/nitrogen/argon storage tanks, CO2 storage tanks; pressure vessel products including denitrification engineering equipment, heat storage and energy storage equipment, complete chemical equipment sets; central air conditioning and HVAC 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.
To ensure the quality of liquid oxygen storage tanks, the following measures can be taken:
选择可靠的供应商：选择有资质和经验的储罐制造商或供应商，确保其具备良好的声誉和可靠的质量管理体系。
Comply strictly with relevant standards and regulations: The design, manufacturing, and installation of liquid oxygen tanks should adhere to applicable standards and regulations, such as industry standards or.
Quality Control and Inspection: Strict quality control and inspection are conducted throughout the manufacturing process, including raw material inspection, process monitoring, and finished product testing. Ensure that the materials, welding, and sealing of the storage tanks meet the requirements.
A comprehensive quality management system: Establish and implement a comprehensive quality management system, including quality control plans, quality inspection records, and quality training, to ensure each stage meets quality requirements.
Routine Maintenance and Inspections: Regular maintenance and inspections of liquid oxygen storage tanks are conducted, including cleaning, coating protection, and corrosion prevention, to extend the tank's service life and maintain its optimal operational condition.
Safety Operations and Management: Establish and implement safety operations and management systems, including proper use of tanks, operational procedures, and safety training, to ensure the safety and reliability of tanks during use.
Regular inspections and evaluations: Conduct regular checks and assessments of the liquid oxygen storage tank, including visual inspections, pressure tests, leakage detection, and as required, non-destructive testing and material analysis, to ensure the tank's quality and safety.
By implementing these measures, the quality of the liquid oxygen tanks can be effectively ensured, enhancing their reliability and safety, and meeting usage requirements and standards.

The filling of a low-temperature liquid nitrogen tank refers to the process of transferring liquid nitrogen from an external supply source into the tank. Below is an explanation of the filling process for low-temperature liquid nitrogen tanks:
Preparation: Before filling the liquid nitrogen tank, preparatory work is required. This includes checking the tank's condition and safety to ensure the interior is clean, free of impurities and contaminants. Additionally, inspect the quality of the liquid nitrogen from the supply source and the safety of the supply pipeline.
Connect supply source: Link the liquid nitrogen supply source to the liquid outlet of the storage tank. Ensure the connection is securely fastened to prevent leaks.
Control the Liquid Level: During the bottling process, it is necessary to control the liquid nitrogen level to avoid overfilling or spilling. A liquid level gauge or a liquid level control system can be used to monitor and control the level.
Slow Injection: The injection of liquid nitrogen should be done slowly to prevent rapid vaporization and increased pressure. Appropriate valves and flow control devices can be used to regulate the injection rate.
Monitor Pressure: During the canning process, it is necessary to monitor the pressure of the storage tank to ensure it remains within a safe range. Pressure gauges or pressure sensors can be used for monitoring.
Canning Complete: Cease the injection of liquid nitrogen when the liquid level reaches the predetermined filling quantity or the tank's capacity limit. Disconnect from the supply source and ensure the sealing integrity of the filling port.
Safe Operation: Throughout the entire bottling process, relevant safety regulations and operational guidelines must be followed. Liquid nitrogen is highly flammable and has low temperatures; operators should wear appropriate personal protective equipment and ensure there are no ignition sources in the operating environment.
When bottling liquid nitrogen, be mindful of its low-temperature characteristics and safety. Ensure safe operation and control during the bottling process to guarantee the safe operation of the storage tank and effective storage of the liquid nitrogen.

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, the internal temperature of a low-temperature liquid storage tank is much lower than the ambient temperature.
Low-temperature liquid storage tanks are commonly used for storing liquids like liquid nitrogen, liquid oxygen, and liquid argon. These liquids have very low boiling points, typically below -100°C. To maintain the low temperature of the liquids, the interior of the tank must have good insulation properties to minimize heat conduction and evaporation loss.
Low-temperature liquid storage tanks usually offer a smaller temperature difference. Generally, the internal temperature of the tank can be maintained near the boiling point of the liquid, typically several dozen degrees lower than the ambient temperature. The specific temperature difference depends on the tank's design and insulation properties, as well as the characteristics of the liquid.
Note that the temperature differences in low-temperature liquid storage tanks may change over time. As time passes, the insulating material's performance may be affected by wear or aging, leading to increased temperature differences. Therefore, regular inspection and maintenance of the tank's insulating layer are crucial to ensure its effective and stable insulating performance.

The liquid oxygen tank boasts the following advantages:
High Storage Density: Liquid oxygen tanks store oxygen in its liquid form, which offers a higher storage density compared to gas storage. This means more oxygen can be stored within a limited space, providing extended supply times.
High Purity Oxygen Supply: Liquid oxygen tanks provide high purity oxygen supply. After undergoing refrigeration and purification processes, liquid oxygen can achieve high purity to meet the requirements of various applications, such as industrial and scientific research fields.
Convenient and Easy to Use: Our liquid oxygen tank boasts convenience and ease of use. Equipped with a level gauge and pressure gauge inside, it allows for easy monitoring of liquid level and pressure. Additionally, the tank is fitted with safety features such as a pressure relief valve and level alarm to ensure safe operation and use.
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.
In summary, liquid oxygen tanks offer advantages such as high storage density, pure oxygen supply, ease of use, and long-term storage. This makes them a reliable choice for oxygen supply, widely used in industrial and scientific research fields.
Our company places great emphasis on technological innovation and R&D, boasting one municipal-level enterprise technology center in Heze City. We have established testing facilities for non-destructive testing, physical and chemical testing, welding testing, hydrostatic testing, and more. We are equipped with over 600 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, and more. The key products we have developed, such as welding for temperature and pressure vessels, biomass boiler emissions reduction, and waste heat utilization, have successively been included in 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 cumulatively obtained 27 authorized utility model patents, 16 authorized invention patents, participated in drafting 2 standards, 2 industry standards, and registered 15 trademarks. Our technical team, in collaboration with Professor Li Yajiang of Shandong University, has developed deep cryogenic container processing technology using the international plasma arc + filler wire tungsten inert gas arc welding (PAW-GTAW) technology. This technology has been appraised as reaching international standards in the field of deep cryogenic container manufacturing at the provincial level. Choose Zhongjie Special Equipment, and let's create brilliance together!