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 mechanical and electrical equipment installation contracting qualification. It is a member of the China Boiler and Water Treatment Association, the China Chemical Equipment Association, and the council unit 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.
Liquefied Oxygen Low-Temperature Storage Tanks are primarily used for storing and supplying liquid oxygen. The application methods can vary depending on specific needs and scenarios. Below are some common application methods for Liquefied Oxygen Low-Temperature Storage Tanks:
Application: Liquid Oxygen Low-Temperature Storage Tanks are widely used in the field for cryogenic preservation of biological samples, cells, tissues, and vaccines. Institutions such as biopharmaceutical research organizations and biobanks utilize liquid oxygen low-temperature storage tanks to store and protect these biological materials.
Experimental Research: Liquid Oxygen Low-Temperature Storage Tanks are used to provide low-temperature environments in scientific research and laboratories, for purposes such as cryogenic preservation and cryogenic experiments. These storage tanks play a crucial role in experimental research across various fields, including physics, chemistry, biology, and materials science.
Industrial Applications: Liquid Oxygen Low-Temperature Storage Tanks are used in the industrial field for low-temperature cooling, serving processes such as metal processing, welding, and heat treatment. These tanks provide low temperatures, enabling metals to achieve the required hardness and toughness during processing.
Food Industry: Liquid Oxygen Low-Temperature Storage Tanks are used in the food industry for freezing and refrigeration purposes, such as frozen meats, fruits, and seafood, etc. The low temperature of liquid oxygen can quickly freeze food, preserving its freshness and quality.
Liquid oxygen cryogenic storage tanks are used in the field for storing and supplying liquid oxygen as fuel. Liquid oxygen, as a high-energy fuel, is widely used in the propulsion systems of engines and devices.
During the operation of liquid oxygen low-temperature storage tanks, it is crucial to strictly adhere to relevant safety regulations and operational guidelines to ensure safe operation and use. Liquid oxygen is highly flammable, so fire prevention measures must be taken when using liquid oxygen low-temperature storage tanks, and it must be ensured that there are no sources of fire around the tank.

The reasons for the peak popularity of low-temperature liquid storage tanks in recent years are as follows:
Rising Demand: As industries and scientific research continue to expand, the demand for low-temperature liquids is on the rise. Low-temperature liquid storage tanks can effectively store and supply liquefied oxygen, nitrogen, and other low-temperature liquids, meeting the needs of various fields.
Technical Advancements: In recent years, the manufacturing technology and material technology for low-temperature liquid storage tanks have continually improved and innovated. The application of new insulating materials, advanced refrigeration systems, and safety control devices has enhanced the performance and safety of the tanks, making them more reliable and secure.
Increased Environmental Awareness: Low-temperature liquid storage tanks enable effective storage and utilization of low-temperature liquids, reducing energy waste and environmental pollution. Against the backdrop of heightened environmental awareness, low-temperature liquid storage tanks, as environmentally friendly and energy-saving equipment, have gained more attention and application.
Emerging Application Fields: There is an increasing demand for cryogenic liquid storage tanks in emerging application fields. For instance, the application of liquid nitrogen in frozen food, biopharmaceuticals, and semiconductor manufacturing is becoming more widespread, which has driven the development of cryogenic liquid storage tanks.
Policy Support: The government has provided support and encouragement for the development of low-temperature liquid storage tanks. Through policy guidance and financial support, the industry has been promoted and expanded.
In summary, the peak status of low-temperature liquid storage tanks in recent years is mainly due to increasing demand, technological advancements, heightened environmental awareness, the development of emerging application fields, and policy support. These factors have collectively driven the rapid growth of the low-temperature liquid storage tank industry.

When cleaning low-temperature liquid storage tanks, the following steps should be taken:
Safety Preparations: Prior to cleaning, ensure there are no remaining liquids or gases inside the tank, and that the tank has been emptied and vented. Wear appropriate personal protective equipment, such as protective suits, gloves, and safety shoes.
Cleaner Selection: Choose a cleaner suitable for low-temperature environments and liquid storage tank materials. Common cleaners include acidic and alkaline solutions, organic solvents, or specialized cleaners. Select the appropriate cleaner based on the tank's material and the nature of the contaminants.
Cleaning Process: Inject the cleaning agent into the tank and use appropriate tools (such as sprayers, brushes, or high-pressure water) to clean the interior walls of the tank. Multiple cleanings can be performed as needed to ensure all contaminants are removed.
Washing and Discharging: After cleaning, rinse with clean water or an appropriate solvent to remove all cleaning agents and residues. Ensure the tank is dry and discharge the rinse water into an appropriate treatment system.
Inspection and Verification: After cleaning, inspect the tank to ensure no residues of contaminants remain inside. Appropriate testing equipment or methods, such as optical inspection, chemical analysis, or ultrasonic testing, can be used to verify the cleaning effectiveness.
Be mindful that when cleaning low-temperature liquid storage tanks, it is crucial to adhere to relevant safety regulations and operational guidelines. Liquid storage tanks typically have high flammability and low-temperature characteristics, so operators must strictly follow safety procedures to ensure the safety of personnel and equipment. During the cleaning process, attention should be given to prevent leaks of cleaning agents and contaminants, and appropriate measures should be taken for handling and disposal.

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.
Stabilization System: Select an appropriate stabilization system to maintain stable pressure within the storage tank. The stabilization 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 pressure sensors to monitor the pressure changes inside storage tanks in real-time. The sensors transmit pressure signals to the pressure stabilization system, enabling timely adjustment of the control valve's opening to maintain stable pressure within the tank.
Control Valve: Select an appropriate control valve for regulating the gas flow and pressure within the storage tank. The control valve should have excellent regulating performance and stability to ensure the pressure within the tank remains 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 an appropriate 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 stabilization should be tailored to the specific engineering requirements and the operating conditions of the liquid argon storage tank, adhering to the relevant local regulations, standards, and specifications. When designing and installing the voltage stabilization system, it is recommended to consult with a qualified engineer or seek guidance from relevant institutions to ensure the reliability and safety of the system.
Our company attaches great importance to technological innovation and research and development. We possess one city-level enterprise technology center in Heze City, with testing facilities for non-destructive testing, physical and chemical testing, welding testing, hydrostatic testing, etc. We are equipped with over 600 pieces of various equipment such as 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, emissions reduction in biomass boilers, and waste heat utilization, have successively been shortlisted 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 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 vessel processing technology using the international plasma arc + filler wire argon arc welding (PAW-GTAW) technology. The provincial scientific and technological achievement appraisal has determined that our technology level in the field of deep cryogenic vessel manufacturing has reached international standards. Choose Zhongjie Special Equipment, let's join hands to create brilliance together!