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/nitrogen/argon tanks, CO2 tanks; pressure vessel products like denitrification engineering equipment, heat storage and energy storage equipment, 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 high-pressure, highly oxidizing equipment that requires special attention to safety during use. Here are some safety precautions for liquid oxygen storage tanks: - Operation: The operation of liquid oxygen storage tanks should be conducted by trained personnel with relevant experience. Operators should be familiar with the tank's structure, performance, and operational procedures, and must operate strictly according to the manual and safety regulations. - Fire Prevention Measures: Liquid oxygen is highly oxidizing and can easily cause fires and explosions. Open flames and sources of sparks and high temperatures should be prohibited near the liquid oxygen storage tank. Fire protection equipment and fire extinguishers should be installed and regularly inspected and maintained. - Leak Control: In the event of a leak in the liquid oxygen storage tank, immediate action should be taken to control the leak. Leaks can lead to oxygen evaporation and increased oxygen concentration, which can heighten the risk of fire and explosion. A leak detection system should be installed, and leak control devices and personal protective equipment should be available. - Insulation Protection: Liquid oxygen storage tanks should have adequate insulation to reduce evaporation and maintain low temperatures. The insulation should be inspected and maintained regularly to ensure its integrity and insulating properties. - Safety Distance: A certain safety distance should be maintained around the liquid oxygen storage tank to prevent the spread of fires, explosions, and leaks. The specific requirements for safety distances should be assessed and determined according to local regulations and standards. - Regular Inspection and Maintenance: Liquid oxygen storage tanks should be inspected and maintained regularly, including checking the structural integrity of the tank, valves, and pipelines for leaks.

The use and operation of the liquid oxygen storage tank system should be mindful of the following points:
Safe Operation: When operating the liquid oxygen storage tank system, it is mandatory to adhere to the relevant safety operation procedures and standards to ensure the safety of the operators.
Tanks Selection: Choose liquid oxygen tanks that comply with specifications and standards, ensuring their quality and safety performance.
Tank Installation: Tanks should be installed on a sturdy foundation to ensure stability. Additionally, the surrounding area of the tank should maintain good ventilation and be kept away from flammable materials and heat sources.
Seal Integrity Inspection: Regularly check the sealing performance of the storage tank system to ensure there are no leaks at valve and pipeline connections.
Pressure Control: Storage tank systems should be equipped with pressure gauges and safety valves, with regular inspections and maintenance to ensure pressure remains within safe limits.
Fire Prevention Measures: Liquid oxygen has a high oxygen content and is highly flammable. Install firewalls around the storage tank system, prohibit smoking and open flames, and ensure safety.
Electrostatic Protection: During the operation of the liquid oxygen system, electrostatic buildup can cause sparks, increasing the risk of fire. Measures such as using electrostatic 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 tank system and related equipment, including valves, pipes, pressure gauges, etc. Ensure the equipment is in perfect condition, and promptly repair or replace any damaged parts.
Wastegas Treatment: During the operation of the liquid oxygen system, waste gases are produced, and appropriate waste gas treatment measures must be implemented to minimize environmental impact.
Above are the precautions to be taken when using the liquid oxygen storage tank system, ensuring safe operation and the normal functioning of the system. During operation, strictly follow the relevant operational procedures and safety requirements to prevent accidents from occurring.

The safe placement of liquid oxygen tanks is a crucial measure to ensure they do not pose a danger to the surrounding environment and personnel during use. The following are the safety requirements for the placement of liquid oxygen tanks:
Safety Distance: Liquid oxygen tanks should maintain a certain distance from other buildings and equipment. This is to ensure effective control and minimize the impact on the surrounding environment in the event of a tank leak or fire.
Fire and explosion prevention measures: Liquid oxygen tanks should be placed in fire-resistant areas, away from open flames, high-temperature sources, and flammable materials. The surrounding area should be equipped with fire and explosion prevention facilities, such as fire extinguishers and foam sprinkler systems, to address potential fire risks.
The liquid oxygen tank should be placed on a sturdy, flat foundation to ensure stability. The bottom of the tank should make full contact with the ground to prevent tilting or rocking.
Ventilation Requirements: Liquid oxygen tanks should be placed in a well-ventilated area to ensure normal circulation of gas emissions and oxygen supply. There should be no obstructions around the tank that hinder gas flow.
Labeling and Warning: Oxygen Liquid Storage Tanks must be clearly labeled with information such as the stored medium, capacity, pressure, etc. Warning signs and safety警示 signs should be placed in the surrounding area to remind personnel of the presence and potential hazards of the Oxygen Liquid Storage Tank.
Regular inspections and maintenance: Liquid oxygen storage tanks should be regularly inspected and maintained, including checking the tank's appearance, sealing, and corrosion prevention measures. Any issues found should be promptly repaired or the tank replaced to ensure its normal operation and safety.
It's important to note that the safety requirements for the placement of liquid oxygen tanks can vary by region and industry. When positioning liquid oxygen tanks, adhere to relevant regulations, standards, and safety procedures, and establish appropriate safety measures based on the actual situation. If you're unfamiliar with or have questions about the safety requirements, it's advisable to consult with experts or relevant institutions.

The inspection of liquid nitrogen tanks refers to regular checks and maintenance to ensure their safe operation and efficient use. Here is a common introduction to the inspection of liquid nitrogen tanks:
Visual Inspection: Regularly inspect the appearance of the storage tank, including the tank body, insulation layer, valves, and pipelines, etc. Note any cracks, corrosion, wear, or other damage. Also, check that the insulation layer is intact with no damage or detachment.
Level Check: Regularly inspect the liquid nitrogen tank's level to ensure it remains within the normal range. This can be done using a level gauge or a level ruler, among other equipment.
Pressure Check: Inspect the tank's pressure to ensure it is within the safe range. Pressure gauges or pressure sensors can be used for the inspection.
Leak Inspection: Check for signs of liquid nitrogen leakage around the tank, such as vapor mist, frost, or ice formation. If leakage is detected, take prompt action to repair it.
Valve and Pipe Inspection: Verify that the valves and pipes of the storage tank are functioning properly, without any gas leaks or blockages. Ensure the tightness and unobstructed flow of the valves and pipes.
Safety Device Inspection: Check the storage tank's safety devices, such as pressure relief valves, temperature sensors, and level alarms, to ensure they are functioning properly.
Maintenance Records: Timely record the inspection results and maintenance records of the tank, including liquid level, pressure, insulation condition, leakage situations, etc. These records aid in monitoring the tank's operational status and identifying issues promptly.
Note that the inspection of liquid nitrogen storage tanks must comply with relevant safety regulations and operating guidelines. Liquid nitrogen is highly flammable at low temperatures, so operators must wear appropriate personal protective equipment and ensure there are no ignition sources in the operating environment. Regular inspections can identify issues promptly and allow for timely repairs, ensuring the safe and efficient operation of the tank.
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 testing facilities for non-destructive testing, physical and chemical testing, welding testing, hydrostatic testing, etc. We have over 600 types of 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, and more. The key products and technologies we have developed, such as welding for temperature and pressure vessels, emission reduction for biomass boilers, and waste heat utilization, have successively been included in multiple Shandong Provincial Department of Industry and Information Technology scientific and technological innovation projects, key projects of Shandong Province, and Heze City innovation and excellence projects. We have cumulatively obtained 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 Yajiang Li 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 by the provincial scientific and technological achievement, the technical level has reached an international standard in the field of deep cryogenic container manufacturing. Choose Zhongjie Special Equipment, and let's create brilliance together!