Shandong Zhongjie Special Equipment (formerly Heze Boiler Factory Co., Ltd.) was established in 2001, located at No. 2218 Jinnan Road, Economic and Technological 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-freeze 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. The main workshop spans 83,000 square meters. It currently employs 710 people, including 247 engineering and technical personnel 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 of Shandong Province" by the Ministry of Industry and Information Technology. In June 2022, it was recognized as a "Gazelle Enterprise of Shandong Province" and in August 2022, as a "Specialized and New Small Giant Enterprise" by the Ministry of Industry and Information Technology.
The reasons for the peak popularity of low-temperature liquid storage tanks in recent years are as follows:
Rising Demand: With the development of industries such as manufacturing and scientific research, the demand for low-temperature liquids is continually increasing. Low-temperature liquid storage tanks can effectively store and supply liquid oxygen, liquid nitrogen, and other low-temperature liquids, meeting the needs of various fields.
Technological Advancements: In recent years, the manufacturing and material technology for low-temperature liquid storage tanks has 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.
Rising Environmental Awareness: Low-temperature liquid storage tanks can effectively store and utilize low-temperature liquids, reducing energy waste and environmental pollution. Amidst the growing environmental awareness, low-temperature liquid storage tanks, as an environmentally friendly and energy-saving equipment, have garnered more attention and application.
Emerging Application Fields: There is a growing demand for low-temperature liquid storage tanks in emerging application fields. For instance, the application of liquid nitrogen in frozen food, biopharmaceuticals, and semiconductor manufacturing is becoming increasingly widespread, driving the development of low-temperature 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 reasons for the peak popularity of low-temperature liquid storage tanks in recent years mainly include increasing demand, technological advancements, heightened environmental awareness, the development of new application areas, and policy support. These factors have collectively propelled the rapid growth of the low-temperature liquid storage tank industry.

The installation of the safety valve on the liquid oxygen 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. Below are the steps for installing the safety valve on the liquid oxygen tank:
Determine the rated pressure of the safety valve: Select an appropriate safety valve based on the design pressure and flow requirements of the liquid oxygen storage tank. Ensure the rated pressure of the safety valve meets the tank's specifications and complies with relevant safety standards and regulations.
Valve Installation Location: Select a suitable 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 tightness and stability of the connections.
Install the safety valve: Mount the safety valve onto the prepared interface. Follow the installation instructions for the safety valve to ensure it is correctly connected and securely fastened.
Adjustment and Testing: After installation, adjust and test according to the requirements of the safety valve. Ensure that the opening and closing pressures of the safety valve meet the design specifications, and conduct a leakage test to ensure its sealing.
Connect exhaust pipe: The exhaust pipe of the safety valve should be properly connected to the outlet of the safety valve. The exhaust pipe must have sufficient diameter and flow capacity to ensure effective release 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 imperative to follow the relevant safety regulations and operational guidelines. If you lack the necessary experience and knowledge, it is advisable to seek assistance and guidance from a professional to ensure the correct installation and reliable operation of the safety valve.

During the process of constructing low-temperature liquid oxygen storage tanks with central oxygen supply, special attention should be paid to the following aspects:
Safe Operation: Adhere strictly to safety operation procedures and standards during the storage tank assembly process. Operators must be trained to understand the characteristics and safety requirements of liquid oxygen, be familiar with the equipment and operational procedures, ensuring the safety of the operation.
Fire Prevention Measures: Liquid oxygen has a high oxygen content, which is prone to causing fires. During the installation process, necessary fire prevention measures should be taken, such as setting up fire barriers, using fire-resistant coatings, and prohibiting open flames, to prevent the occurrence and spread of fires.
Leakage Control: Pay attention to leakage control during the installation process. Oxygen leakage from liquid oxygen can increase oxygen concentration, raising the risk of fire and explosion. Leak detectors and alarm systems should be equipped to detect and control leaks in a timely manner, and appropriate emergency measures should be taken.
Oxygen Concentration Monitoring: During the installation process, the oxygen concentration around the liquid oxygen storage tank should be monitored regularly. High oxygen concentrations can intensify the combustion of flammable materials, increasing the risk of fire and explosion. Take timely measures to ensure the oxygen concentration remains within safe limits.
Grounding and Static Protection: During the liquid oxygen plant process, ensure proper grounding of the storage tank and related equipment to minimize static accumulation and discharge. Utilize static-conductive materials and anti-static equipment to reduce the dangers caused by static.
Regular Inspections and Maintenance: After the installation is complete, the liquid oxygen tank should be regularly inspected and maintained. This includes visual inspections, pressure tests, leak detection, etc., to ensure the tank's safety and stability.
Note that during the installation of the central oxygen supply low-temperature liquid oxygen storage tank, operations should be conducted by experienced personnel and in accordance with relevant safety operation procedures and standards. Throughout the installation process, safety risks should be closely monitored, and timely measures should be taken to ensure the safety and stability of the installation.

The reasons for not allowing a liquid oxygen tank to be left empty for extended periods are mainly as follows:
Evaporation Loss of Liquid Oxygen: Liquid oxygen has a low boiling point, and prolonged storage without use will cause continuous evaporation, resulting in a loss of liquid oxygen within the storage tank. The evaporation rate of liquid oxygen is relatively fast, with daily evaporation amounts potentially reaching several percent of the tank's capacity. Extended periods of storage without use can lead to waste of liquid oxygen.
Safety Risk: Liquid oxygen is a strong oxidizer with high flammability and explosive properties. Prolonged empty storage of liquid oxygen tanks increases the likelihood of contact with the surrounding environment, thereby raising the risk of accidental fires and explosions.
Tank damage risk: Long-term emptying of liquid oxygen tanks can lead to internal oxidation reactions, accelerating tank corrosion and damage. Tank damage can affect its sealing performance and structural integrity, increasing the risk of leaks and safety accidents.
Therefore, to ensure the safe storage and effective use of liquid oxygen, the liquid oxygen storage tank should be regularly maintained and serviced to avoid long-term idleness. When the tank is not in use, appropriate measures should be taken, such as sealing the tank and reducing oxygen evaporation, to minimize the loss of liquid oxygen and the associated safety risks.
Shandong Zhongjie Special Equipment, welcome customers to our factory for business discussions.