Shandong Zhongjie Special Equipment's main products include: fuel (gas) boilers, organic heat carrier boilers, biomass boilers, waste heat boilers, and other boiler products; vacuum insulation cryogenic pressure vessels such as LNG tanks, oxygen/nitrogen/argon tanks, and CO2 tanks; pressure vessel products such as 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.
When initially using a liquid nitrogen tank, there are several precautions to consider for safe and effective operation. Here are some suggested precautions:
Safe Operation: Liquid nitrogen is a low-temperature liquid with strong refrigerating and asphyxiating effects. When handling liquid nitrogen tanks, it is mandatory to wear appropriate personal protective equipment, such as insulated gloves and protective suits. Avoid direct contact with liquid nitrogen to prevent injury or other harm.
Ventilation Environment: Liquid nitrogen evaporation produces a large amount of gas, which may displace other gases, leading to a decrease in oxygen content in the air. Therefore, when using liquid nitrogen tanks, it is essential to ensure good ventilation in the operating area to prevent oxygen deficiency.
Tank Inspection: Before first use of the liquid nitrogen tank, a thorough visual inspection and check of the tank's seal should be conducted. Ensure there are no visible damages, leaks, or other safety hazards. If any issues are found, they should be repaired or the tank replaced promptly.
Tank Filling: Prior to the first use of the liquid nitrogen tank, it is necessary to fill the tank with liquid nitrogen. During the filling process, adhere to the correct operational steps and safety protocols to ensure a safe and reliable filling procedure. Additionally, be mindful to control the filling speed and pressure to avoid excessive tank pressure and temperature increase.
Labeling and Record Keeping: Prior to the initial use of the liquid nitrogen tank, relevant information should be labeled on the tank, such as the storage medium, capacity, manufacturing date, etc. It is also recommended to establish a tank usage record, including filling dates, filling quantities, usage details, etc., for future tracking and management.
Note that the use of liquid nitrogen tanks involves safety risks such as low temperatures and high pressures. Operators should receive training and strictly adhere to the relevant operational procedures and safety measures. If unfamiliar with the operation or have doubts, it is recommended to consult with individuals or relevant organizations for guidance.

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. Here are the basic facts about low-temperature industrial gas filling stations:
Storage Tank Type: Low-temperature industrial gas storage tanks commonly use double-walled vacuum insulated storage tanks, with the inner wall for storing liquid gas and the outer wall for insulation to reduce heat transfer and 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 pump is 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 typically includes the following steps: preparation (checking equipment, preparing filling medium), connecting equipment (connecting filling pumps, pipelines, etc.), starting equipment (starting the filling pump, adjusting flow and pressure), filling operation (filling liquid gas into the target storage tank), monitoring and control (monitoring parameters such as pressure and flow during the filling process to ensure safety and quality), and completion of operation (shutting down equipment, cleaning the work area).
Safety Measures: Strict adherence to relevant safety operation procedures and standards is required during the operation of low-temperature industrial gas storage tank filling stations. Operators must receive training to understand the characteristics and safety precautions of liquid 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: During the filling process, quality control at the filling station is required, including monitoring parameters such as the flow, pressure, and temperature of the filling medium, to ensure the accuracy and quality of the filling.
It's important to note that the operation of low-temperature industrial gas filling stations must be conducted by trained personnel and strictly adhere to the relevant operational procedures and safety measures. Additionally, the design and manufacture of the filling stations should comply with applicable standards and regulations to ensure the safety and reliability of the equipment.

To ensure the quality of liquid oxygen 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 the relevant standards and regulations, such as standards, industry standards, or.
Quality Control and Inspection: Rigorous 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 required standards.
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 every stage meets quality requirements.
Regular maintenance and inspection: Conduct regular maintenance and inspections on liquid oxygen tanks, including cleaning, coating protection, and anti-corrosion treatment, to extend the tank's lifespan and maintain its optimal working 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 assessments: Conduct regular checks and assessments on liquid oxygen storage tanks, including visual inspections, pressure tests, leak detection, and as required, non-destructive testing and material analysis to ensure the tank's quality and safety.
By implementing these measures, the quality, reliability, and safety of the liquid oxygen tanks can be effectively ensured, meeting usage requirements and standards.

The reasons for the peak popularity of low-temperature liquid storage tanks in recent years are as follows:
Rising Demand: With the development of industries, scientific research, and other fields, the demand for low-temperature liquids is continually increasing. Low-temperature liquid storage tanks can effectively store and supply liquid oxygen, liquid nitrogen, liquid gases, and other low-temperature liquids, meeting the needs of various sectors.
Technical Advancements: In recent years, the manufacturing technology and material technology for low-temperature liquid storage tanks have been continuously improved and innovated. The application of new insulation materials, advanced refrigeration systems, and safety control devices has enhanced the performance and safety of the tanks, making them more reliable and secure.
Enhanced Environmental Awareness: Low-temperature liquid storage tanks enable effective storage and utilization of low-temperature liquids, reducing energy waste and environmental pollution. Against the backdrop of increased environmental awareness, low-temperature liquid storage tanks, as an environmentally friendly and energy-saving device, have garnered more attention and application.
Emerging Application Fields: There is an increasing demand for cryogenic liquid storage tanks in emerging application fields. For instance, the application of liquid nitrogen in frozen food, biomedicine, and semiconductor manufacturing is becoming more widespread, which has driven the development of cryogenic 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 peak of low-temperature liquid storage tanks in recent years is mainly due to increasing demand, technological advancements, heightened environmental awareness, the development of new application areas, and policy support. These factors have collectively driven the rapid growth of the low-temperature liquid storage tank industry.
Our company attaches great importance to technological innovation and R&D design. We have one municipal-level enterprise technology center in Heze City, equipped with testing facilities for non-destructive testing, physical and chemical testing, welding testing, hydrostatic testing, etc. We have over 600 various 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 and technologies we have developed, such as temperature and pressure vessel welding, biomass boiler emission reduction, and waste heat utilization, have successively been selected for 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 accumulated 27 authorized utility models, 16 authorized inventions, participated in drafting 2 standards, 2 industry standards, and registered 15 trademarks. The technical team of our company, in collaboration with Professor Yajiang Li 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. The provincial-level scientific and technological achievement identification has confirmed that the technology level in the field of deep cryogenic container manufacturing has reached an international standard. Choose Zhongjie Special Equipment, and let's create brilliance together!