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, and CO2 tanks; pressure vessel products like denitration 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.
Low-temperature liquid oxygen storage tanks typically require some safety accessories to ensure safe operation and to address potential risks. The following are some common safety accessories for low-temperature liquid oxygen storage tanks:
Pressure sensor: Used to monitor pressure changes within storage tanks. If the pressure exceeds the set range, it triggers alarms or automatically stops filling measures to prevent overpressure in the tank.
Safety valve: Used 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 tank.
Pressure Relief Device: Used to release gas to a safe area when the pressure inside the storage tank is too high, thereby reducing the pressure on the tank. The pressure relief device typically includes pressure relief valves, relief pipes, etc.
Level sensor: Used to monitor the level changes of liquid oxygen inside storage tanks, ensuring an adequate supply and preventing overfilling.
Temperature Sensor: Used to monitor temperature changes within storage tanks to ensure that the temperature of liquid oxygen inside remains within a safe range.
Fire Detectors and Fire Suppression Systems: Designed to monitor fire risks around storage tanks and activate fire suppression systems as needed, to prevent the spread of fires to surrounding areas.

To ensure the quality of liquid oxygen storage tanks, the following measures can be taken:
选择可靠的供应商：选择有资质和经验的储罐制造商或供应商，确保其具备良好的声誉和可靠的质量管理体系。
Comply strictly with relevant standards and regulations: The design, manufacturing, and installation of liquid oxygen storage tanks should conform to relevant standards and regulations, such as standards, industry standards, or.
Quality Control and Inspection: Rigorous quality control and inspection are conducted throughout the manufacturing process, including material inspection, process monitoring, and finished product testing. Ensure that the materials, welding, and sealing of the storage tanks meet the required standards.
Comprehensive Quality Management System: Establish and implement a comprehensive quality management system, including quality control plans, quality inspection records, and quality training, to ensure each stage meets quality requirements.
Regular maintenance and inspection: Conduct regular maintenance and inspections of the liquid oxygen storage tank, including cleaning, coating protection, and anti-corrosion treatment, to extend the tank's service life and maintain its optimal working condition.
Safety Operation and Management: Establish and implement safety operation and management systems, including proper use of tanks, operational procedures, safety training, etc., to ensure the safety and reliability of tanks during use.
Regular inspections and evaluations: Conduct regular inspections and evaluations of liquid oxygen tanks, including visual inspections, pressure tests, and leak detection, as well as non-destructive testing and material analysis as required to ensure the tank's quality and safety.
By implementing these measures, the quality, reliability, and safety of the liquid oxygen storage tanks can be effectively ensured, meeting usage requirements and standards.

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. Here are several situations where liquid oxygen tanks may occasionally vent:
Pressure Control: During operation, the pressure inside the liquid oxygen storage tank varies due to evaporation of the liquid oxygen and temperature changes. To maintain a safe pressure range within the tank, regular venting is required to control the tank's pressure within the safe limits.
Prevent Overpressure Accumulation: During oxygen filling or usage, external factors or operational errors may cause the pressure inside the liquid oxygen tank to exceed safe limits. To prevent overpressure accumulation, timely venting is required to reduce the pressure within the tank.
Prevent Gas Accumulation: There may be some gas impurities, such as air and water vapor, in the liquid oxygen storage tank. These gases will condense into liquid or solid at the low temperature of liquid oxygen, blocking pipes or affecting the normal operation of the tank. Regular venting can expel these impurities, keeping the tank clean and unobstructed.
Note that the venting operation of liquid oxygen should be carried out by authorized personnel, strictly adhering to the relevant operating procedures and safety measures. During the venting process, precautions should be taken to prevent any leakage of liquid oxygen and contact with it, ensuring the safety and reliability of the operation.

Operation procedures for liquid oxygen storage tanks should be established based on the specific tank design and usage requirements. Below are some common contents of general operation procedures for liquid oxygen storage tanks: - Operator Training: Ensure that operators have received relevant training on liquid oxygen storage tanks, understanding the tank's structure, performance, operating procedures, and safety considerations. - Safety Inspections: Conduct necessary safety checks before operating a liquid oxygen storage tank, including checking the integrity of the tank, the sealing of valves and pipes, and the condition of the insulation layer. - Liquid Oxygen Supply: Ensure the liquid oxygen supply system is functioning properly, including checking the status of liquid oxygen supply pipes, valves, and pressure gauges, and ensuring an adequate supply. - Tank Pressure Control: Monitor the pressure in the liquid oxygen storage tank and ensure it remains within a safe range. If necessary, control the tank pressure by adjusting pressure valves or pressure relief devices. - Leak Control: Regularly check the sealing of the tank and pipes to ensure there are no leaks. If leaks are detected, take immediate measures to control the leak and notify relevant personnel. - Fire Prevention Measures: Prohibit open flames and prevent sparks and high-temperature objects from contacting the tank around the storage tank. Establish fire protection facilities and fire-fighting equipment, and inspect and maintain them regularly. - Safety Distance: Maintain a certain safety distance around the liquid oxygen storage tank to prevent the spread of fires, explosions, and leaks. - Maintenance and Inspection: Regularly perform maintenance and inspections on the tank, including cleaning the tank, inspecting the insulation layer, valves, and pipe conditions, ensuring the tank operates normally. - Waste Disposal: Properly dispose of waste generated by liquid oxygen storage tanks, including residual liquid oxygen, exhaust gases, and wastewater, in accordance with relevant environmental protection regulations and standards. Note that operation procedures for liquid oxygen storage tanks should be established based on the specific tank design and usage requirements, and should comply with applicable regulations, standards, and safety guidelines. When operating liquid oxygen storage tanks, cooperation with local regulatory authorities and personnel should be sought to ensure the safety and reliability of the tank.
Our company attaches great importance to technological innovation and R&D design, boasting 1 city-level enterprise technology center in Heze City. We have established testing facilities for non-destructive testing, physical and chemical testing, welding testing, hydrostatic testing, etc. We are equipped with over 600 various instruments and 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 of temperature and pressure vessels, biomass boiler emission reduction, and waste heat utilization, have successively been shortlisted for multiple Shandong Provincial Department of Industry and Information Technology science and technology innovation projects, key projects in Shandong Province, and Heze City innovation and excellence projects. We have accumulated a total of 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 of Shandong University, has developed deep cryogenic container processing technology using the internationally recognized plasma arc + filler wire tungsten inert gas arc welding (PAW-GTAW) technique. After being appraised as a provincial-level scientific and technological achievement, our technology level has reached international standards in the field of deep cryogenic container manufacturing. Choose Zhongjie Special Equipment, let's join hands to create brilliance together!