Shandong Zhongjie Special Equipment Co., Ltd. specializes in: 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-nitrogenargon 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 thermal energy centers, LNG transport vehicles, and LNG tank containers, among other green energy equipment.
To prevent hazards caused by static electricity in liquid oxygen storage tanks, the following measures can be taken:
Ensure proper grounding of the liquid oxygen storage tank and related equipment. Grounding releases static electricity to the ground, reducing the likelihood of static buildup. Metal components such as tanks and pipes should be connected to a reliable grounding system.
Static Dissipative Materials: Utilize static dissipative materials to reduce the accumulation of static electricity. For instance, apply conductive coatings or materials to the insulating layer of liquid oxygen tanks and pipelines to discharge static electricity to the ground.
Anti-static Equipment: Utilize anti-static equipment, such as static-conductive pipes and hoses, to minimize the accumulation and discharge of static electricity. These devices assist in grounding static electricity, reducing the occurrence of static sparks.
Static grounding wire: Install static grounding wires on liquid oxygen storage tanks and related equipment to discharge static electricity to the ground. These grounding wires should be connected to a reliable grounding system and be inspected and maintained regularly.
Static Eliminator: Utilize a static eliminator to dissipate static electricity. These devices neutralize static by releasing opposite charges, thereby reducing static buildup and the occurrence of sparks.
Electrostatic Safety Training: Conduct electrostatic safety training for personnel using liquid oxygen storage tanks to enhance their understanding of electrostatic hazards and preventive awareness. The training content may include the principles of electrostatic formation, preventive measures, and emergency response procedures.
It is important to note that the static electricity prevention measures for liquid oxygen tanks should be designed and implemented by personnel, following relevant safety operation procedures and standards. During operation, strict adherence to the prescribed operational procedures is required to avoid the generation of static sparks, ensuring the safety of the tank.

The filling of low-temperature liquid nitrogen storage tanks refers to the process of transferring liquid nitrogen from an external supply source into the storage tank. Below is an elaboration on the filling of low-temperature liquid nitrogen storage tanks:
Preparation: Before filling the liquid nitrogen tank, thorough preparation is required. This includes inspecting the tank's condition and safety, ensuring the interior is clean, free of impurities and contaminants. Additionally, check the quality of the liquid nitrogen from the supply source and the safety of the supply pipeline.
Connect supply source: Link the liquid nitrogen supply source to the liquid outlet of the storage tank. Ensure the connection is secure and reliable to prevent leaks.
Control Liquid Level: During the bottling process, it is necessary to control the liquid nitrogen level to prevent overfilling or overflow. A level gauge or level control system can be used to monitor and control the liquid level.
Slow Injection: The injection of liquid nitrogen should be slow to prevent rapid vaporization and increased pressure. Appropriate valves and flow control devices can be used to regulate the injection rate.
Monitor Pressure: During the bottling process, the pressure of the storage tank must be monitored to ensure it remains within a safe range. Pressure gauges or pressure sensors can be used for monitoring.
Canning completed: Stop injecting liquid nitrogen when the liquid level reaches the predetermined filling amount or the tank's capacity limit. Disconnect from the supply source and ensure the sealing integrity of the filling port.
Safety Operation: Throughout the canning process, it is essential to adhere to relevant safety regulations and operational guidelines. Liquid nitrogen is highly flammable at low temperatures, so operators must wear appropriate personal protective equipment and ensure the operation area is free of ignition sources.
When bottling liquid nitrogen, be mindful of its low-temperature properties and safety. Ensure safe operation and control throughout the bottling process to guarantee the safe operation of the storage tank and the effective storage of liquid nitrogen.

Consider the following aspects to distinguish the quality of liquid nitrogen tanks:
Material: Liquid nitrogen storage tanks are typically made of high-strength, corrosion-resistant materials such as stainless steel or aluminum alloy. These materials offer excellent corrosion resistance and mechanical strength, ensuring long-term stable operation of the tank.
Sealing: The liquid nitrogen tank should have excellent sealing performance to effectively prevent nitrogen leakage. The valves, pipeline connections, and other parts of the tank should be designed rationally to ensure reliable sealing.
Insulation: The liquid nitrogen tank should have excellent insulation properties to minimize evaporation loss of liquid nitrogen. The insulation layer of the tank should use insulating materials such as polyethylene foam to reduce heat conduction and evaporation loss.
Safety: The liquid nitrogen tank should have excellent safety performance, including the installation of safety valves, pressure gauges, and other safety equipment, as well as features for fire prevention and explosion-proof. The design and manufacturing of the tank should comply with relevant safety standards and regulations.
Service Life: Liquid nitrogen tanks generally have a longer service life, capable of withstanding prolonged use and transportation. The manufacturer and reputation of the tank are also significant factors in assessing service life.
Price and After-Sales Service: The price of liquid nitrogen tanks should be reasonable, and good after-sales service should be provided. Choosing manufacturers or suppliers with a reputation and excellent after-sales service ensures the quality of the product and technical support.
Considering these factors, one can differentiate the strengths and weaknesses of liquid nitrogen tanks. When selecting a liquid nitrogen tank, it's recommended to choose one that meets the required specifications based on actual needs and operating conditions to ensure safe and reliable storage.

The maintenance and protection of liquid argon cylinder accessories are crucial for ensuring the normal operation and extending the service life of the cylinders. The following are general methods for maintaining and protecting liquid argon cylinder accessories:
Valve Maintenance: Regularly inspect and maintain valves within the tank accessories, including intake valves, exhaust valves, and safety valves. Ensure the valves operate smoothly and reliably with no leaks or obstructions. Regularly lubricate the valves and clean away any debris and dirt.
Pressure Relief Device Maintenance: The pressure relief devices (such as safety valves) in the liquid argon storage tank accessories are critical components for ensuring the safety of the internal pressure of the tank. Regularly inspect and test the operational status of the pressure relief devices to ensure they are functioning properly. Clean and repair as needed.
Sensor and Instrument Maintenance: Sensors and instruments in the liquid argon storage tank accessories are used to monitor and control parameters such as the tank's temperature and pressure. Regularly calibrate and inspect the accuracy and reliability of the sensors and instruments. Maintain the cleanliness and normal operation of the sensors and instruments.
Insulation Protection: The insulation layer of liquid argon storage tank accessories is crucial for maintaining the low temperature state of liquid argon. Regularly inspect the integrity and insulating performance of the insulation layer, and repair or replace damaged insulation materials. Avoid mechanical damage or contamination to the insulation layer.
Cleaning and Corrosion Protection: Regularly clean the accessories of the tank and remove impurities and dirt from the surfaces. Periodically inspect and maintain the corrosion-resistant coating on the accessories to prevent rust and oxidation.
Regular inspections and maintenance: Conduct comprehensive inspections and maintenance of liquid argon cylinder accessories on a regular basis, including the exterior, fittings, and seals. Promptly identify and address any damage, leaks, or other issues with the accessories.
Record and Document Management: Document each maintenance and service result, including the service date, content, issues found, and corrective measures. Establish comprehensive management records and documents for easy tracking and management of the attachment's operational status.
Note that maintenance and protection of liquid argon cylinder accessories should be performed by trained personnel, following relevant specifications and standards. Ensure safety during maintenance and operations, and consult with experts for accurate guidance.
Zhong Jie Special Equipment upholds the great vision of "realizing employees' dreams, creating value for customers, and striving for the prosperity and strength of our motherland," and is dedicated to the development of the green energy equipment industry. We commit to society with high-quality products and services at competitive prices!