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 insulation cryogenic pressure vessels such as LNG storage tanks, oxygen-nitrogenargon storage tanks, and CO2 storage tanks; pressure vessel products including denitrification engineering equipment, heat storage and energy storage equipment, and 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.
Low-temperature liquid storage tanks (such as liquid nitrogen, liquid oxygen, liquid argon, etc.) possess several advantages:
High-Density Storage: Low-temperature liquid storage tanks can convert gases into liquids, significantly increasing storage density. Compared to gas storage, liquid storage can hold more material in a smaller space, enhancing storage efficiency.
Low-Temperature Retention: The low-temperature liquid storage tank has excellent insulation properties, effectively maintaining the low temperature of the liquid. The design and construction of the insulation layer reduce heat conduction and loss, preserving the low temperature of the liquid, and minimizing evaporation and waste.
Supply: Low-temperature liquid storage tanks provide a stable liquid supply. Through internal pressure control and pipeline system design, precise liquid supply is achievable, catering to industrial production and experimental needs.
Safety: Low-temperature liquid storage tanks offer high safety. Compared to gas storage, liquid storage reduces the risk of gas leakage and explosion. Tanks are typically equipped with safety devices, such as pressure relief valves and level alarms, to ensure timely measures can be taken in abnormal situations, safeguarding the tank's safety.
Multi-functional Applications: Low-temperature liquid storage tanks are widely used in various fields such as industrial production and scientific research. Liquids like liquid nitrogen and liquid oxygen can be utilized for freezing, refrigeration, and gas supply, meeting diverse industry needs.
In summary, low-temperature liquid storage tanks offer advantages such as high-density storage, temperature retention, supply, safety, and versatile applications, providing reliable liquid storage and supply solutions across various fields.

The use of low-temperature liquid storage tanks requires attention to the following matters:
Safe Operation: Operators must receive training to understand the procedures and safety precautions for handling tanks. Adhere to the correct operational steps to ensure safe operation.
Protective Gear: Operators must wear appropriate protective gear, such as thermal suits, gloves, etc., to safeguard themselves from the harm of low-temperature liquids.
Leak Prevention: Regularly inspect the tanks and associated pipelines for tightness to prevent leaks of low-temperature liquids. Keep the area around the tanks clean to avoid debris hindering leak detection and handling.
Fire Protection: Low-temperature liquids are highly flammable and fire precautions must be taken. Maintain a fire-free environment around storage tanks, prohibiting smoking and open flames. Equip with suitable fire-fighting equipment to address fire risks.
Pressure Control: Regularly inspect and maintain the pressure control system of the storage tank to ensure the pressure inside is within a safe range. Safety valves and pressure sensors, among other equipment, should operate normally, and abnormal pressure situations should be detected and addressed promptly.
Insulation Protection: Low-temperature liquid storage tanks should be equipped with an effective insulation layer to minimize heat transfer and evaporation of the liquid. The selection and installation of the insulation layer should comply with relevant standards and requirements.
Regular Inspections and Maintenance: Conduct regular checks of the tank's exterior and interior conditions, including inspecting for leaks, corrosion, wear, or other damage. Pay special attention to the tank's interfaces, valves, and piping, ensuring they operate normally.
Emergency Preparedness: Develop an emergency response plan including measures for leaks, fires, and other emergencies. Operators should be familiar with the plan and equipped with appropriate emergency equipment and fire fighting materials.

Proper management regulations for the use of low-temperature liquid storage tanks encompass the following aspects:
Tank selection and installation: Choose an appropriate low-temperature liquid storage tank and ensure it complies with relevant standards and regulations. Installation should be carried out by personnel and operated according to the manufacturer's instructions and requirements to ensure the stability and safety of the tank.
Safety Operating Procedures: Establish and implement safety operating procedures for liquid storage tanks, including start-up, shutdown, filling, and venting operations. Operators must receive training to understand the characteristics of liquid storage tanks, safety precautions, and emergency response measures.
Safety Equipment and Protective Measures: Tanks should be equipped with necessary safety devices, such as pressure sensors, safety valves, and leak detectors, to monitor and control the tank's pressure and temperature. Operators should also wear appropriate personal protective equipment, like insulating gloves and protective suits, to ensure their safety.
Regular inspections and maintenance: Conduct regular checks and maintenance on low-temperature liquid storage tanks, including inspecting the tank's appearance, seals, and corrosion protection measures. In case of any issues, promptly repair or replace the tank to ensure its proper operation and safety.
Waste Management: Abandoned low-temperature liquid storage tanks should be disposed of in accordance with relevant environmental protection regulations. The residual liquid in the abandoned tanks should be handled properly to prevent environmental pollution.
Tank Records and Tracking: Establish tank usage records, including filling dates, quantities, and usage status. Additionally, it is recommended to set up a tank tracking system for monitoring and managing the usage and maintenance of tanks.
Here are some common management regulations for low-temperature liquid storage tanks. Specific regulations may vary by industry and region. When using low-temperature liquid storage tanks, comply with relevant laws and standards and establish suitable management measures based on the actual situation.

Routine inspections and maintenance of liquid oxygen storage tanks are crucial for ensuring their safe operation. The following are general steps for the daily checks and maintenance of liquid oxygen storage tanks:
Visual Inspection: Regularly inspect the exterior of the storage tank, including the shell, welds, valves, and fittings. Pay attention to any signs of cracks, corrosion, or deformation.
Leak Detection: Utilize appropriate leak detection equipment to inspect for leaks in storage tanks and connecting areas. Leak detection can be carried out using methods such as gas detectors or liquid oxygen detection agents.
Pressure Testing: Conduct regular pressure tests to inspect the tank's sealing and pressure resistance. Perform pressure tests according to relevant standards and specifications, and record the test results.
Valve and Fitting Inspection: Check if the valves and fittings on the tank are functioning properly and for any signs of looseness or damage. Ensure the valves operate smoothly and reliably.
Insulation Layer Inspection: Check for any damage or detachment in the tank's insulation layer. Repair or replace any damaged insulation materials to ensure effective insulation.
Cleaning and Drainage: Regularly clean the interior of the tank to remove accumulated impurities and dirt. Regularly drain to prevent the impurities and sediments in liquid oxygen from damaging the tank.
Safety Equipment Inspection: Check the safety equipment around the storage tank, such as fire separation zones and alarm systems, to ensure they are functioning properly.
Record and Document Management: Document the results of each inspection and maintenance, including the inspection date, content, issues found, and corrective measures. Establish comprehensive management records and documents for tracking and managing the tank's operational status.
Note that inspections and maintenance of liquid oxygen tanks should be conducted by trained personnel and in accordance with relevant regulations and standards. Ensure safety during maintenance and operation, and consult experts for accurate guidance.
Our company places great emphasis on technological innovation and R&D design. We possess 1 municipal-level enterprise technology center in Heze City, equipped with testing facilities for non-destructive testing, physical and chemical testing, welding testing, hydrostatic testing, and more. We have over 600 pieces of 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 others. The key products and technologies we have developed, such as temperature and pressure vessel welding, biomass boiler emissions reduction, and waste heat utilization, have successively been shortlisted for multiple Shandong Provincial Department of Industry and Information Technology science and technology innovation projects, Shandong Provincial key projects, and Heze City innovative and excellent projects. We have accumulated 27 authorized utility models, 16 authorized inventions, participated in drafting 2 standards, 2 industry standards, and registered 15 trademarks. Our technical team, in collaboration with Professor Yajiang Li of Shandong University, has developed deep cryogenic container processing technology using the international plasma arc + wire feeding argon arc welding (PAW-GTAW) technology. The provincial-level scientific and technological achievement appraisal has confirmed that our technology level in deep cryogenic container manufacturing has reached an international standard. Choose Zhongjie Special Equipment, let's create brilliance together!