Shandong Zhongjie Special Equipment Co., Ltd. specializes in the following products: fuel (gas) boilers, organic heat carrier boilers, biomass boilers, waste heat recovery boilers, and other boiler products; vacuum insulation cryogenic pressure vessels such as LNG tanks, oxygen/nitrogen/argon tanks, and CO2 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.
Liquid oxygen storage tanks are devices used for storing liquid oxygen. Liquid oxygen is the liquid form of oxygen cooled below its boiling point and is commonly used in various fields such as equipment, industrial production, and devices. These tanks are typically made of high-strength materials like stainless steel to withstand the low temperatures and high pressures of liquid oxygen. The interior usually features an insulating layer to minimize evaporation of the liquid oxygen and maintain its低温 state. The design and manufacturing of liquid oxygen storage tanks must prioritize safety and reliability to prevent leaks and explosions. Strict operational procedures and safety standards must be followed when using these tanks to ensure the safety of personnel and equipment. The development and manufacturing of liquid oxygen storage tanks are carried out by engineers and technical teams, involving knowledge and technology from various fields such as materials science, mechanical engineering, and chemical engineering. Different manufacturers may employ different design and manufacturing methods to meet the diverse needs and application scenarios of users.

During the operation of low-temperature liquid storage tanks, the following points should be noted:
Protective Gear: When handling low-temperature liquid storage tanks, it is mandatory to wear appropriate protective gear, including gloves, protective clothing, and non-slip shoes. This gear safeguards the skin from the harm of low-temperature liquids.
Avoid direct contact: Low-temperature liquids can be very cold and cause chilling. Therefore, it is essential to avoid direct contact with low-temperature liquids, especially with the skin. Use tools or utensils for handling, and prevent hands from coming into direct contact with low-temperature liquids.
Ventilation Requirements: In the operational area of low-temperature liquid storage tanks, adequate ventilation must be ensured to expel gases produced by the evaporation of low-temperature liquids. Maintain air circulation to avoid excessive oxygen concentration, and reduce the risk of fire and explosion.
Prevent Leaks: Regularly inspect the leakage of low-temperature liquid storage tanks, equip with leak detection and alarm systems. In case of leakage, take immediate measures to control and repair it. Avoid the hazards of low-temperature liquid leaks to personnel and the environment.
Fire prevention measures: Low-temperature liquids have low boiling and freezing points, making them prone to fires. To prevent and contain fires, fireproof walls and fire-resistant coatings are installed around low-temperature liquid storage tanks.
Static Dissipation: Handling low-temperature liquids may generate static electricity, increasing the risk of sparks causing fires. Measures such as using static-conductive materials and anti-static equipment are taken to reduce the accumulation and release of static electricity.
Regular inspections and maintenance: Conduct regular checks on the condition of low-temperature liquid storage tanks and related equipment, including valves, pipes, pressure gauges, etc. Ensure that the equipment is in perfect condition, and promptly repair or replace any damaged parts.
Waste Gas Treatment: During the process of using low-temperature liquids, waste gas is produced, and appropriate waste gas treatment measures must be taken to minimize environmental impact.
The above are the precautions to be taken when using low-temperature liquid storage tanks, ensuring safe operation and normal tank function. During operation, strict adherence to relevant operational procedures and safety requirements is mandatory.

Liquid Oxygen Storage Tanks Offer the Following Advantages:
High Storage Density: Liquid oxygen tanks can store oxygen in a liquid state, which offers a higher storage density compared to gas storage. This means more oxygen can be stored in a limited space, providing a longer supply time.
High Purity Oxygen Supply: Liquid oxygen tanks can provide high purity oxygen supply. After undergoing refrigeration and purification processes, liquid oxygen can yield high purity oxygen, meeting the requirements of various applications such as industry and scientific research.
User-friendly: The liquid oxygen tank features ease of use. It is equipped with devices such as level gauges and pressure gauges inside, allowing for convenient monitoring of the liquid level and pressure. Additionally, the liquid oxygen tank is fitted with safety devices like pressure relief valves and level alarms to ensure safe operation and usage.
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, thereby extending its storage life. This is beneficial for applications requiring long-term oxygen storage, such as institutions, laboratories, and industrial production.
Overall, liquid oxygen tanks offer advantages such as high storage density, high-purity oxygen supply, ease of use, and long-term storage. This makes liquid oxygen tanks a reliable choice for oxygen supply, widely used in industrial and scientific research fields.

The reason for occasional venting of liquid oxygen tanks is primarily to maintain the safe pressure range within the tank and prevent excessive pressure buildup. The following are several scenarios where liquid oxygen tanks may be vented occasionally:
Pressure Control: During the operation of the liquid oxygen storage tank, the pressure inside the tank may change due to evaporation of liquid oxygen and temperature fluctuations. To maintain the safe pressure range within the tank, regular venting is required to control the tank's pressure within the safe limits.
Prevent Excessive Pressure Build-up: During oxygen filling or usage, external factors or operational errors may cause the pressure inside the liquid oxygen tank to exceed the safe limit. To prevent excessive pressure build-up, timely venting is required to alleviate the pressure within the tank.
Prevent Gas Accumulation: Liquid oxygen storage tanks may contain certain gas impurities such as air and water vapor. These gases can condense into liquids or solids at the low temperatures of liquid oxygen, blocking pipelines or affecting the normal operation of the tank. Regular venting can expel these impurities, maintaining cleanliness and unobstructed flow within the tank.
It should be noted that the degassing operation of liquid oxygen must be performed by qualified personnel and strictly adhere to the relevant operational procedures and safety measures. During the degassing process, care should be taken to prevent leaks of liquid oxygen and exposure to it, ensuring the safety and reliability of the operation.
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