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, GC2/Class pressure pipeline installation licenses, as well as equipment and machinery installation contracting qualifications. 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, and has 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.
To extend the service life of liquid argon storage tanks, the following measures can be taken:
Regular inspections and maintenance: Conduct periodic visual inspections of the liquid argon storage tank, check valves and fittings, and perform leak detection and pressure tests. Promptly identify and repair potential issues to ensure the tank operates normally.
Maintain Insulation: Insulation is crucial for the thermal preservation of liquid argon tanks. Regularly inspect the integrity and insulating properties of the insulation, repair or replace any damaged insulation materials to ensure the tank's insulating effectiveness.
Control Liquid Argon Temperature: The temperature of liquid argon should be maintained within an appropriate range to prevent damage to the storage tank from excessive or insufficient temperatures. Employ suitable cooling or heating measures to ensure stable temperature of the liquid argon.
Corrosion Protection: The outer shell and internal structure of the liquid argon tank should be protected against corrosion and oxidation. Regular inspections and maintenance of the protective coating are essential to ensure its integrity.
Avoid excessive pressure and overfilling: Prevent the internal pressure of the tank from being too high or too low, as well as overfilling with liquid argon. Excessive pressure and overfilling can lead to structural cracks or damage to the tank.
Regular Cleaning and Drainage: Perform regular internal tank cleaning to remove accumulated impurities and dirt. Regularly drain to prevent contaminants and sediments in liquid argon from damaging the tank.
Safety Operations and Training: Ensure operators possess the knowledge and skills for safe operation of liquid argon storage tanks. Enhance safety training to boost operators' safety awareness and emergency response capabilities.
Establish comprehensive management records and documents, including tank usage, inspection, and maintenance records. Regularly review and update these records to ensure safe management and maintenance of the tanks.
These measures can help extend the service life of liquid argon storage tanks, but specific operations and management must be tailored to the type and application of the tank. When performing maintenance and operation, adhere to relevant regulations and standards, and consult with experts to ensure safety and effectiveness.

When storing liquid nitrogen in low-temperature storage tanks, be mindful of the following points:
Protective Gear: When handling low-temperature storage tanks, it is mandatory to wear appropriate protective gear, including gloves, protective clothing, and non-slip shoes. This equipment safeguards 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, 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 operational area of low-temperature storage tanks, adequate 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 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-retardant 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

Material control for low-temperature liquid storage tanks is a crucial aspect in ensuring the safety and reliability of the tanks. The following are some common material control measures:
Material Selection: Choose materials suitable for low-temperature environments, such as low-temperature alloy steel, stainless steel, etc. These materials possess excellent low-temperature resistance and crack resistance, maintaining strength and toughness under low-temperature conditions.
Material Quality Control: Ensure the selected materials meet relevant standards and specifications. Conduct chemical composition analysis, mechanical property tests, and impact tests on the materials to ensure their performance meets design requirements.
Welding Material Selection: Choose welding materials suitable for low-temperature environments, such as low-temperature electrodes or welding wires. The welding materials should match the storage tank material, featuring good welding properties and crack resistance.
Welding Process Control: Monitor welding process parameters such as current, voltage, and speed to ensure the quality and reliability of焊接 joints. Low heat input welding methods like pulse welding and laser welding can minimize the temperature gradient and residual stress in the heat-affected zone.
Corrosion Protection Measures: Apply corrosion-resistant treatments to the internal and external metal surfaces of storage tanks to extend their service life. Options include corrosion-resistant coatings and paints to safeguard the metal structure of the tank from corrosion.
Material Performance Monitoring: Regularly conduct performance monitoring of the storage tank materials, such as mechanical property tests,

The stable pressure design of a 15-cubic-meter liquid argon storage tank requires consideration of the following aspects:
Tank Pressure: Determine the design pressure of the tank to meet the storage and supply requirements for liquid argon. Establish an appropriate design pressure range based on the properties and usage conditions of liquid argon.
Pressure Regulation System: Select an appropriate pressure regulation system to maintain stable pressure within the storage tank. The pressure regulation system typically includes components such as pressure regulators, pressure sensors, and control valves, which are used for monitoring and adjusting the pressure inside the tank.
Pressure Sensor: Install a pressure sensor for real-time monitoring of pressure changes within the storage tank. The sensor transmits pressure signals to the voltage stabilization system to adjust the control valve promptly, maintaining stable pressure inside the tank.
Control Valve: Select an appropriate control valve for regulating gas flow and pressure within the storage tank. The control valve should possess excellent regulating performance and stability to ensure the pressure within the tank stays within the set range.
Safety Valve: Install a safety valve to automatically release gas when the pressure inside the storage tank exceeds the set value, preventing overpressure. The safety valve should be selected and installed based on the design pressure and capacity of the storage tank.
Voltage Stabilization System Control: Equipped with a suitable control system for monitoring and regulating the operation of the voltage stabilization system. The control system enables automatic adjustments and alarm functions to ensure stable and safe pressure within the storage tank.
Note that the design of the voltage regulation system should be tailored to the specific engineering requirements and operating conditions of the liquid argon storage tank, adhering to relevant local laws, regulations, and standards. When designing and installing the voltage regulation system, it is recommended to consult with an engineer or a relevant institution for guidance to ensure the reliability and safety of the system.
Our company highly values technological innovation and R&D design. We possess 1 municipal 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 types of equipment, including CNC machines, 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 and technologies we have developed, such as thermal 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 innovative and excellent projects. We have cumulatively obtained 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 from Shandong University, has developed deep cryogenic vessel processing technology using the international plasma arc + filler wire argon arc welding (PAW-GTAW) technique. After provincial scientific and technological achievement assessment, the technology level has reached international standards in the field of deep cryogenic vessel manufacturing. Choose Zhongjie Special Equipment, and let's create brilliance together!