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, a B-grade boiler installation license, and GB2/Class and GC2/Class pressure pipeline installation licenses, as well as a qualification for electromechanical equipment installation contracting. It is a member of the China Boiler and Water Treatment Association, the China Chemical Equipment Association, and the Council Member of the Shandong Equipment Manufacturing Association. The company has also passed certifications for the ISO9001 Quality Management System, ISO14001 Environmental Management System, OHSAS18001 Occupational Health and Safety Management System, and the American ASME/U2 certification.
The methods for dealing with air leakage in liquid argon storage tanks mainly include the following steps:
Identified Leaks: Leaks in liquid argon storage tanks are detected through odors, gas detection equipment, or abnormal pressure in liquid argon storage tanks.
Confirm Air Leaks: Utilize gas detection equipment or foam leak detection agents to pinpoint the exact location of air leaks. Inspect tank interfaces, valves, pipe connections, and other areas to locate the points of air leakage.
Seal Air Leaks: Take appropriate measures to stop the air leak source based on the location of the leak. For instance, for leaks at joints, inspect and adjust sealing washers or tighten bolts; for valve leaks, check and replace the seals.
Isolate Air Leaks: During the process of dealing with air leaks, it is necessary to isolate the leaky areas to ensure personnel safety. Set up warning signs, restrict access to the area, and take necessary protective measures, such as wearing protective masks, gloves, etc.
Evacuate liquid argon: If air leakage cannot be repaired immediately or the leakage volume is significant, consider evacuating the liquid argon. By gradually reducing the pressure of liquid argon in the storage tank, convert it into gas to minimize the risk of air leakage.
Ventilation Treatment: During the air leakage treatment, ensure good ventilation and promptly remove the gases produced by the evaporation of liquid argon. Natural ventilation or the use of ventilation equipment can be employed to expel the evaporated gases of liquid argon outdoors.
Safety Assessment and Repair: After completing the air leakage treatment, conduct a safety assessment to ensure the tank's safety. Based on the assessment results, carry out necessary repairs and maintenance to prevent the recurrence of air leakage.
Note that liquid argon is a low-temperature liquid with a low boiling and freezing point. Extra caution is required when dealing with leaks to avoid contact, which can cause chilling. When handling leaks in liquid argon storage tanks, personnel should operate under the relevant safety operating procedures and standards.

Oxygen storage tanks and liquid oxygen storage tanks are equipment used for storing oxygen, but they have some distinctions: - Storage Form: Oxygen storage tanks are typically used for storing gaseous oxygen, while liquid oxygen storage tanks are for storing liquid oxygen. Oxygen is in a gaseous state at room temperature but can be cooled to a liquid state at lower temperatures for more efficient storage and use. - Storage Pressure: Oxygen storage tanks usually hold high-pressure oxygen, with pressures around 200-300 bar. Liquid oxygen storage tanks store liquid oxygen at lower pressures, generally around 2-5 bar. - Storage Capacity: Oxygen storage tanks typically have smaller capacities, suitable for personal or small-scale use. Liquid oxygen storage tanks have larger capacities, suitable for industrial or large-scale use. - Storage Method: Oxygen storage tanks store oxygen as a gas, via compressed gas storage. Liquid oxygen storage tanks store oxygen in its liquid form, by cooling it to below its boiling point to convert it into a liquid. - Safety Requirements: Due to the highly oxidizing nature of liquid oxygen, liquid oxygen storage tanks require more stringent safety measures during design and use. These tanks usually need to have good insulation protection, leak control, and fire prevention measures to ensure safe operation. - It's important to note that the specific design and specifications of oxygen storage tanks and liquid oxygen storage tanks may vary depending on different regions and application sites. When using these tanks, it is necessary to comply with applicable regulations, standards, and safety guidelines, and to cooperate with local regulatory authorities and individuals to ensure the safety and reliability of the tanks.

The temperature difference between the interior and exterior of a low-temperature liquid storage tank depends on various factors, including the tank's design, insulation performance, the temperature of the liquid, and the ambient temperature outside. Generally, the temperature inside the low-temperature liquid storage tank is much lower than the ambient temperature outside.
Low-temperature liquid storage tanks are commonly used for storing liquefied nitrogen, oxygen, argon, and other low-temperature liquids. These liquids have very low boiling points, usually below -100°C. To maintain the low temperature of the liquids, the storage tank must have good insulation properties to minimize heat transfer and evaporation loss.
Low-temperature liquid storage tanks usually offer a smaller temperature difference. Generally, the internal temperature of the tank can be maintained near the boiling point of the liquid, typically several degrees cooler than the external environment. The specific temperature difference depends on the tank's design, insulation performance, and the characteristics of the liquid.
Note that the temperature differences in low-temperature liquid storage tanks may change over time. As time goes by, the insulating material's performance may be affected by wear or aging, leading to an increase in temperature differences. Therefore, it's important to regularly inspect and maintain the tank's insulation to ensure its effective and stable insulating performance.

When storing liquid nitrogen in low-temperature storage tanks, be mindful of the following points:
Protective Gear: When operating low-temperature storage tanks, it is mandatory to wear appropriate protective gear, including gloves, protective clothing, and non-slip shoes. This gear helps protect 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 equipment for handling to prevent hand contact with liquid nitrogen.
Ventilation Requirements: In the operational 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 them with leak detectors and alarm systems. In case of a leak, take immediate action to control and repair it. Avoid the hazards of liquid nitrogen leaks to personnel and the environment.
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 tanks may cause sparks, increasing the risk of fire. Measures should be
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