Shandong Zhongjie Special Equipment (formerly Heze Boiler Factory Co., Ltd.) was established in 2001, located at No. 2218 Jinnan Road, Development Zone, Heze City, with a registered capital of 50 million yuan and total assets of 500 million yuan. The company has 7 business centers: boilers, deep-freezing containers, pressure vessels, central air conditioning, engineering installation, international trade, and Internet of Things. It has three factory sites on Jinnan Road, East Changjiang Road, and Bohai Road, covering a total of 200,000 square meters, with the main workshop spanning 83,000 square meters. It currently employs 710 people, including 247 engineering and technical staff and 82 intermediate-level technicians. In December 2016, it was recognized as a "High-tech Enterprise" by the Science and Technology Department. In June 2021, it was identified as a "Specialized and New Enterprise in Shandong Province" by the Ministry of Industry and Information Technology. In June 2022, it was recognized as a "Gazelle Enterprise in Shandong Province" and in August 2022, as a "Specialized and New Small Giant Enterprise" by the Ministry of Industry and Information Technology.
In pressure vessel design, several common "thickness" parameters must be considered:
Wall Thickness: Refers to the actual thickness of the pressure vessel wall, i.e., the thickness of the container wall. The selection of wall thickness must consider factors such as the design pressure of the container, the strength of the material, and its corrosion resistance to ensure the strength and safety of the container.
Bend Allowance: The bend allowance refers to the additional thickness added to the wall thickness during the manufacturing process to ensure the strength and shape of the container's bending section. The calculation and selection of the bend allowance must consider factors such as the container's bending radius and the material's bendability.
Corrosion Allowance: The corrosion allowance refers to the additional thickness added to the wall to counteract corrosion effects on either the inside or outside of the container. The selection of the corrosion allowance must consider the working environment of the container and the corrosive properties of the medium it encounters, to ensure that the container can withstand corrosion throughout its service life.
These "thickness" parameters play a crucial role in pressure vessel design, affecting the container's strength, corrosion resistance, and safety. During the design process, it is necessary to reasonably select and calculate these thickness parameters, in accordance with relevant standards and specifications, considering the container's usage conditions and requirements, to ensure that the design and manufacturing meet the required standards.

A 50 cubic meter liquid oxygen tank refers to a storage tank with a capacity of 50 cubic meters. Liquid oxygen tanks are commonly used for storing and supplying liquid oxygen, applicable in fields such as laboratory research, etc.
Key features and configurations of a 50 cubic meter liquid oxygen storage tank may include the following aspects:
Volume: The 50 cubic meter liquid oxygen tank has a capacity of 50 cubic meters, allowing for the storage of larger quantities of liquid oxygen.
Structure: Liquid oxygen tanks are typically designed with double or multi-layer construction, filled with insulating material in between to minimize heat transfer and evaporation of the liquid oxygen. The tank material is usually stainless steel or aluminum alloy, offering excellent corrosion and low-temperature resistance.
Insulation Layer: The insulation layer of liquid oxygen storage tanks typically uses multi-layer insulation materials such as polyethylene foam, glass fiber, and vacuum layers, to reduce heat transfer and the evaporation of liquid oxygen.
Temperature Control System: Liquid oxygen tanks are typically equipped with a temperature control system to regulate the tank's temperature, maintaining the low-temperature state of the liquid oxygen.
Safety Equipment: Liquid oxygen tanks are typically equipped with safety devices such as pressure sensors, temperature sensors, and safety valves to ensure safe operation of the tank.
Note that the use of liquid oxygen tanks must 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 tanks, and it must be ensured that there are no sources of fire around the tank.

Liquid Oxygen Low-Temperature Storage Tanks are primarily used for storing and supplying liquid oxygen, with their application methods varying based on specific needs and scenarios. Here are some common application methods of liquid 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 these 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 freezing preservation and experimental purposes. These tanks play a crucial role in experimental research across various fields such as physics, chemistry, biology, and materials science.
Industrial Applications: Liquid Oxygen Low-Temperature Storage Tanks are used in industrial sectors for providing low-temperature cooling, applicable in processes such as metalworking, welding, and heat treatment. These tanks can offer 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 refrigerating foods such as frozen meats, frozen fruits, and frozen seafood. The low temperature of liquid oxygen can quickly freeze foods, preserving their freshness and quality.
Liquid oxygen low-temperature 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, strict adherence to relevant safety regulations and operational guidelines is required to ensure the safe operation and use of the tanks. 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 ignition sources in the vicinity of the tank.

The installation of the safety valve on the liquid oxygen storage tank is a crucial component to ensure that the tank can release pressure in a timely manner during overpressure situations, protecting the tank and related equipment. The following are the steps for installing the safety valve on the liquid oxygen storage tank:
Determine the rated pressure of the safety valve: Based on the design pressure and flow requirements of the liquid oxygen tank, select an appropriate safety valve. Ensure that the rated pressure of the safety valve meets the tank's requirements and complies with relevant safety standards and regulations.
Valve Installation Location: Select an appropriate location for installing the safety valve. Typically, the safety valve should be mounted on the top or side of the liquid oxygen storage tank to allow for timely pressure release in the event of overpressure.
Preparation for installation interfaces: Prepare the corresponding interfaces based on the connection method of the safety valve. This may include welding interfaces, threaded interfaces, or flange interfaces, etc. Ensure the sealing and firmness of the connections.
Install the safety valve: Mount the safety valve onto the prepared fitting. Follow the installation instructions for the safety valve to ensure it is properly connected and tightened.
Adjustment and Testing: After installation, adjust and test the safety valve according to its specifications. Ensure that the opening and closing pressures of the safety valve meet the design requirements, and conduct an air leakage test to verify its sealing integrity.
Connect exhaust pipes: The exhaust pipes of the safety valve should be properly connected to the outlet of the safety valve. The exhaust pipes should have sufficient diameter and flow capacity to ensure effective exhaust of overpressure gas when the safety valve is opened.
Identification and Record: Label safety valves and discharge pipes with relevant information such as rated pressure, flow rate, and installation date. Additionally, record the installation details and test results of the safety valves for future reference and maintenance.
When installing the safety valve on the liquid oxygen storage tank, it is essential to follow the relevant safety regulations and operation guidelines. If you lack the necessary experience and knowledge, it is advisable to seek assistance and guidance from experts to ensure the correct installation and reliable operation of the safety valve.
Zhong Jie Special Equipment upholds the grand 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 contribute to society with products and services that offer high value for money!