Shandong Zhongjie Special Equipment (formerly Heze Boiler Factory Co., Ltd.) holds an A-grade boiler manufacturing license, an A2-grade pressure vessel manufacturing license, an A2-grade pressure vessel design license, B-grade boiler installation, and GB2/Class, GC2/Class pressure pipeline installation licenses, as well as a mechanical and electrical equipment installation contracting qualification. It is a member of the China Boiler and Water Treatment Association, the China Chemical Equipment Association, and a council member of the Shandong Equipment Manufacturing Association. The company has also passed the ISO9001 Quality Management System, ISO14001 Environmental Management System, OHSAS18001 Occupational Health and Safety Management System certifications, and the U.S. ASME/U2 certification.
Liquid Oxygen Storage Tanks are specialized equipment that require particular attention to safety and an understanding of their characteristics. Below are the safety precautions and features of using liquid oxygen storage tanks: **Safety Precautions:** - **Operation:** The operation of liquid oxygen storage tanks should be conducted by trained and experienced personnel. Operators should be familiar with the tank's structure, performance, and operational procedures, and must operate strictly according to the manual and safety regulations. - **Fire Prevention Measures:** Liquid oxygen is highly oxidizing and can easily cause fires and explosions. Open flames and hot objects should be prohibited near the storage tank, and fire prevention facilities and fire extinguishing equipment should be established and regularly inspected and maintained. - **Leakage Control:** In the event of a leakage, immediate measures should be taken to control the leakage. Leaks can cause evaporation of liquid oxygen and an increase in oxygen concentration, raising the risk of fire and explosion. A leakage alarm system should be installed, and leakage control devices and personal protective equipment should be provided. - **Insulation Protection:** Liquid oxygen storage tanks should have good insulation to reduce evaporation and maintain a low temperature. The insulation layer should be regularly inspected and maintained to ensure its integrity and insulating properties. - **Safety Distance:** A certain safety distance should be maintained around the liquid oxygen storage tank to prevent the spread of fires, explosions, and leaks. The specific requirements for safety distance should be assessed and determined according to local regulations and standards. **Features:** - **High Oxidizing Property:** Liquid oxygen is highly oxidizing and can support combustion more intensely. Therefore, particular attention must be paid to fire and explosion prevention measures when using liquid oxygen storage tanks. - **High Pressure Storage:** Liquid oxygen storage tanks typically store high-pressure oxygen, with pressures usually around 2-5 bar. Thus, when operating and maintaining liquid oxygen storage tanks, attention must be given to pressure control and the safety of pressure relief devices. - **Low Temperature Storage:** The liquid oxygen in the storage tank is at a low temperature, typically around -183°C. Therefore, when contacting the liquid oxygen storage tank, appropriate protective measures should be taken.

Before cooling the liquid oxygen tank, the following prerequisites must be met:
Clean the tank: Ensure the interior of the tank is clean, free of impurities and contaminants. The tank should be properly cleaned and flushed to maintain its internal cleanliness.
Drainage and Exhaust: To empty the gas within the storage tank and expel it through the exhaust system, reducing the gas content inside the tank. This helps minimize interference of the gas on the cooling process.
Safety Precautions: Necessary safety measures must be taken before cooling the liquid oxygen tank. Liquid oxygen is highly flammable and has low-temperature characteristics. Operators should wear appropriate protective suits, gloves, and other personal protective equipment to ensure safe operation.
Temperature Control: During the cooling process of the liquid oxygen tank, the temperature of the tank must be controlled. Typically, low-temperature media such as liquid nitrogen are used to cool the tank, ensuring that the tank's temperature gradually decreases below the boiling point of liquid oxygen.
Insulation and Heat Retention: Liquid oxygen storage tanks commonly use double or multi-layer structures with insulating materials filled in the middle to reduce heat transfer and evaporation of the liquid oxygen. Ensuring the integrity and good insulating properties of the insulation layer enhances the cooling efficiency of the tank.
Under the aforementioned conditions, cooling operations for liquid oxygen tanks may be conducted. The cooling process must strictly adhere to relevant safety regulations and operational guidelines to ensure the safe operation and usage of the tank.

Protection tips for liquid nitrogen tanks include the following:
Wear protective gear: When operating liquid nitrogen tanks, it is mandatory to wear appropriate protective gear, including gloves, protective clothing, and non-slip shoes. This gear helps shield the skin from the low temperatures of liquid nitrogen and other hazards.
Avoid direct contact: Liquid nitrogen is extremely cold and can cause frostbite. Therefore, it is crucial to avoid direct contact with liquid nitrogen, especially with the skin. Use tools or implements for handling to prevent direct hand contact with liquid nitrogen.
Note Ventilation: In the operational area of the liquid nitrogen tank, proper ventilation must be ensured to exhaust gases produced by the evaporation of liquid nitrogen. Maintain air circulation to avoid excessive oxygen concentration, reducing the risk of fire and explosion.
Prevent Leaks: Regularly inspect the liquid nitrogen storage tank for leaks and equip with leak detectors and alarm systems. In case of a leak, take immediate action to control and repair it. Avoid harm to personnel and the environment caused by the leakage of liquid nitrogen.
Fire Prevention Measures: Liquid nitrogen has a low boiling and freezing point, which makes it prone to causing fires. Measures such as installing firewalls around the liquid nitrogen storage tanks and using fire-retardant coatings are taken to prevent the occurrence and spread of fires.
Electrostatic Protection: The static buildup in liquid nitrogen tanks can cause sparks, increasing the risk of fire. Measures such as using conductive materials and static-dissipative equipment should be taken to reduce the accumulation and release of static electricity.
Regular Inspections and Maintenance: Conduct regular checks on the condition of liquid nitrogen tanks and related equipment, including valves, pipes, pressure gauges, etc. Ensure that the equipment is in perfect condition without any damage, and promptly repair or replace any damaged parts.
Waste Gas Treatment: Liquid nitrogen storage tanks produce waste gas during operation, proper waste gas treatment must be implemented.

When selecting liquid oxygen storage tanks with medical oxygen generators, several factors should be considered:
Requirement: First, determine the oxygen demand of the institution or individual. Select the appropriate oxygen concentrator model and specification based on the required oxygen flow rate and pressure.
Safety and Reliability: Ensure the chosen oxygen concentrator offers high safety and reliability. Select products that comply with relevant standards and regulations, featuring safety functions such as overpressure protection, leakage protection, and overload protection.
Ease of operation: Choose an oxygen concentrator that is simple to operate and user-friendly. Consider the methods for adjusting oxygen flow and concentration, as well as the clarity and readability of the operating interface.
Quality and Reputation: Choose an oxygen concentrator with excellent quality and reliability. Refer to customer reviews, word-of-mouth, and institutional endorsements to select the product.
Maintenance and After-Sales Service: Familiarize yourself with the maintenance requirements and after-sales support for oxygen generators. Ensure timely access to repairs and technical assistance to guarantee the smooth operation and maintenance of the oxygen generator.
Cost-Effectiveness: Choose a product with a good cost-performance ratio by considering the price, performance, and features of the oxygenator. Select the appropriate oxygenator based on actual needs and budget.
Be mindful that when selecting liquid oxygen storage tanks with medical oxygen generators, adhere to relevant equipment procurement regulations and standards. It's advisable to consult with equipment suppliers or relevant institutions to ensure the chosen oxygen generator meets your requirements and safety standards.
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 types 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 more. The key products we have developed, such as temperature and pressure vessel welding, biomass boiler emissions 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 a total of 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 internationally recognized plasma arc + wire-in-tube argon 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, let's create brilliance together!