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-nitrogenargon 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 modules. Planned products include large-scale energy centers, LNG transport vehicles, LNG tank containers, and other green energy equipment.
The use of liquid oxygen storage tanks requires special attention to the following safety matters:
Training: Operators of liquid oxygen tanks must undergo training to understand the properties of liquid oxygen, safety operating procedures, and emergency response measures. Only trained personnel are authorized to handle liquid oxygen tanks.
Safety Operating Procedures: Establish and adhere to the safety operating procedures for liquid oxygen storage tanks, including proper operational procedures, protective measures, and emergency response plans. Ensure operators follow the procedures to minimize accident risks.
Protection Measures: When using liquid oxygen tanks, it is essential to take necessary precautions, such as wearing protective gloves and suits. Avoid direct contact with liquid oxygen to prevent chilling.
Leak Control: Regularly inspect the liquid oxygen storage tank for leaks and equip with leak detection and alarm systems. In case of a leak, immediate measures should be taken to control the leak and carry out repairs.
Fire prevention measures: Liquid oxygen has a high oxygen content, which can easily cause fires. Measures such as installing fire barriers around the liquid oxygen storage tanks and using fire-retardant coatings are taken to prevent fires from occurring and spreading.
Electrostatic Protection: Electrostatic buildup in liquid oxygen storage tanks may cause sparks, increasing the risk of fire. Measures such as using electrostatic conductive materials and anti-static equipment should be taken to reduce the accumulation and release of static electricity.
Ventilation Requirements: Ensure adequate ventilation within the enclosed space of the liquid oxygen storage tank to expel vaporization of liquid oxygen.

Prior to using the liquid oxygen tank, the following preparations must be made:
Safety Inspection: Ensure the tank and its surrounding environment are safe. Check for any damage, leaks, or other safety hazards on the tank. Make sure there are no flammable materials or other hazardous items around the tank.
Tank Preparation: Inspect the tank's exterior, including the shell, welds, valves, and fittings. Ensure there are no visible damages or corrosion. Check that the insulation layer is intact and undamaged.
Liquid Oxygen Filling: Utilize liquid oxygen delivery equipment to fill the storage tank. Ensure that the flow rate and pressure of liquid oxygen are maintained within a safe range during the filling process.
Pressure Control: Storage tanks should be equipped with pressure control devices to ensure the internal pressure of the tanks remains within a safe range. Inspect and adjust the pressure control devices to ensure their proper functioning.
Valve Operation: Check that the valves and connections on the tank are operating properly. Ensure that the valves open and close smoothly and reliably. Adjust the valve's open and close positions as needed.
Safety equipment: Inspect the safety equipment around the storage tank, such as fire separation areas and alarm systems, to ensure they are functioning properly.
Operator Training: Ensure operators are proficient in the safe operation of liquid oxygen storage tanks.

The liquid oxygen storage tank features the following safety technical characteristics:
High-pressure Vessel: Liquid Oxygen Storage Tanks are high-pressure vessels capable of withstanding high pressure. Their design and manufacture must comply with relevant standards and specifications to ensure the tank's strength and sealing integrity.
Low Temperature Storage: Liquid oxygen tanks are used for storing liquid oxygen, with operating temperatures typically around -183 degrees Celsius. The material and insulation of the tank must be capable of withstanding low-temperature environments to prevent evaporation of the liquid oxygen and the penetration of external heat.
Fireproof Design: Liquid oxygen has a high oxygen content and is prone to cause fires. The design of liquid oxygen storage tanks must consider fire prevention measures, such as setting up fire walls and using fire-resistant coatings, to prevent the occurrence and spread of fires.
Leak Control: Leaks in liquid oxygen storage tanks can lead to increased oxygen concentrations, heightening the risk of fire and explosion. Tanks must be equipped with leak detection and alarm systems to promptly identify and control leaks, and to implement appropriate emergency measures.
Static protection: Electrostatic buildup in liquid oxygen tanks may cause sparks, increasing the risk of fire. Tanks must be equipped with static conductive materials and anti-static devices to reduce the accumulation and release of static electricity.
Safety valves and pressure control: Liquid oxygen tanks must be equipped with safety valves and pressure control devices to ensure the internal pressure of the tank remains within a safe range. In the event of pressure exceeding the set value, the safety valve will automatically release pressure, protecting the tank's safety.
Regular inspections and maintenance: Liquid oxygen tanks require regular checks

When storing liquid nitrogen in low-temperature storage tanks, the following points should be noted:
Protective Gear: When operating low-temperature storage tanks, appropriate protective gear must be worn, including protective gloves, suits, and non-slip shoes. This gear protects the skin from the low temperatures of liquid nitrogen and other hazards.
Avoid direct contact: Liquid nitrogen is extremely cold and can cause chilling. Therefore, avoid direct contact with liquid nitrogen, especially with skin. Use tools or utensils for handling to prevent direct hand contact with liquid nitrogen.
Ventilation Requirements: In the operation area of low-temperature storage tanks, adequate ventilation must be ensured to expel gases produced by the evaporation of liquid nitrogen. Maintain air circulation to avoid excessive oxygen concentration, and reduce the risk of fire and explosion.
Prevent Leaks: Regularly inspect the low-temperature storage tanks for leaks and equip with leak detectors and alarm systems. In case of a leak, take immediate measures to control and repair it. Avoid the 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 is prone to causing fires. To prevent and contain fires, firewalls and fire-resistant coatings are installed around low-temperature storage tanks.
Electrostatic Protection: Electrostatic buildup in low-temperature storage tanks may cause sparks, increasing the risk of fire. Measures should be
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 non-destructive testing, physical and chemical testing, welding testing, hydrostatic testing, and other testing facilities. 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, etc. 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 a total of 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 Li Yajiang of Shandong University, has jointly developed deep cryogenic container processing technology, which adopts the international plasma arc + filler wire tungsten inert gas arc welding (PAW-GTAW) technology. After being appraised as a provincial-level scientific and technological achievement, the technical level has reached an international standard in the field of deep cryogenic container manufacturing. Choose Zhongjie Special Equipment, let's join hands to create brilliance!