Shandong Zhongjie Special Equipment (formerly Heze Boiler Factory Co., Ltd.) holds an A-grade boiler manufacturing license, A2-grade pressure vessel manufacturing license, A2-grade pressure vessel design license, B-grade boiler installation, and GB2/Class, 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理事 member of the Shandong Equipment Manufacturing Association. The company has also passed the ISO9001 Quality Management System, ISO14001 Environmental Management System, OHSAS18001 Occupational Health and Safety Management System certifications, and the ASME/U2 certification.
Proper installation of the liquid oxygen tank safety valve is a crucial step in ensuring the safe operation of the liquid oxygen tank. Here are the installation steps for the liquid oxygen tank safety valve:
Select the appropriate safety valve: Choose a suitable safety valve based on the design pressure and flow requirements of the liquid oxygen storage tank. Ensure that the rated pressure and flow of the safety valve meet the tank's specifications and comply 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 tank to allow for timely pressure release in the event of overpressure.
Prepare 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 integrity and firm connection of the interfaces.
Install the safety valve: Mount the safety valve onto the prepared interface. Follow the installation instructions for the safety valve to ensure it is properly 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 leak test to ensure its sealing.
Identification and Record: Label the safety valve with relevant information such as rated pressure, flow rate, and installation date. Additionally, document the installation details and test results of the safety valve for future reference and maintenance.
When installing the liquid oxygen storage tank safety valve, it is imperative to adhere to relevant safety regulations and operating guidelines. If lacking in relevant experience and knowledge, it is advisable to seek assistance and guidance from professionals to ensure the correct installation and reliable operation of the safety valve.

When cleaning a low-temperature liquid storage tank, 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.
Cleaning Agent Selection: Choose a cleaning agent suitable for low-temperature environments and liquid storage tank materials. Common cleaning agents include acidic and alkaline solutions, organic solvents, or specialized cleaning agents. Select the appropriate cleaning agent based on the tank 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 removal of contaminants.
Washing and Discharge: 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 residual contaminants remain inside. Appropriate detection 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 follow relevant safety regulations and operating guidelines. Liquid storage tanks typically possess high flammability and low-temperature characteristics, so operators must strictly adhere to 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 their treatment and disposal.

To prevent the explosion of liquid oxygen tanks, the following measures can be taken:
Regular inspections and maintenance: Regularly inspect and maintain the liquid oxygen storage tank, including checking the tank's exterior, welds, valves, and fasteners, to ensure they are intact and damage-free. Regularly clean the tank to remove any dirt and impurities adhering to its surface.
Pressure Control: Tanks should be equipped with pressure control devices to ensure internal pressure remains within a safe range. Regularly inspect and adjust the pressure control devices to ensure proper functioning.
Temperature Control: The liquid oxygen tank should be maintained within an appropriate temperature range to prevent excessive heat from causing increased pressure. Ensure the tank's insulation is intact to minimize heat conduction and loss.
Fire Prevention Measures: Liquid oxygen has a high oxygen content and flammability, hence strict fire prevention measures are necessary. A fire separation zone should be established around the storage tank, with smoking and open flames prohibited. Ensure the tank maintains a sufficient fire separation distance from other facilities.
Pressure relief devices and safety valves: Liquid oxygen storage tanks should be equipped with pressure relief devices and safety valves to prevent overpressure and sudden pressure increases. Regularly inspect and test the operational status of the pressure relief devices and safety valves to ensure their proper functioning.
Tank Operation Guidelines: Adhere strictly to the operational specifications and safety requirements for liquid oxygen tanks. Operators must be trained and familiar with the tank's characteristics and operation techniques. Avoid operational errors and violations.
Emergency Preparedness: Establish emergency response plans and conduct drills to address potential accidents. Train operators in emergency response capabilities to ensure timely and effective actions.

Oxygen storage tanks and liquid oxygen storage tanks are equipment used for storing oxygen, but they have some distinctions: - Storage Form: Oxygen storage tanks are typically used for storing gaseous oxygen, whereas liquid oxygen storage tanks are for storing liquid oxygen. Oxygen is in a gaseous state at room temperature but can be cooled to a liquid state at low temperatures for more efficient storage and use. - Storage Pressure: Oxygen storage tanks usually store high-pressure oxygen, with pressures around 200-300 bar. Liquid oxygen storage tanks, however, store liquid oxygen at lower pressures, generally around 2-5 bar. - Storage Capacity: Oxygen storage tanks usually have smaller capacities, suitable for personal or small-scale use. Liquid oxygen storage tanks have larger capacities, suitable for industrial or large-scale use. - Storage Method: Oxygen storage tanks store oxygen in a gaseous form, through compressed gas storage. Liquid oxygen storage tanks store oxygen in a liquid form, by cooling it to temperatures below its boiling point to convert it into a liquid. - Safety Requirements: Due to the high oxidizing nature of liquid oxygen, liquid oxygen storage tanks require stricter safety standards in design and use. They typically need to have good thermal insulation, leak control, and fire prevention measures to ensure safe operation. - It should be noted that the specific design and specifications of oxygen and liquid oxygen storage tanks may vary depending on different regions, applications, and locations. When using these tanks, it is essential to follow applicable regulations, standards, and safety guidelines and to cooperate with local regulatory authorities and personnel to ensure the safety and reliability of the tanks.
Our company attaches great importance to technological innovation and research and development, boasting one municipal-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., and are equipped with over 600 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 temperature-pressure vessels for welding, biomass boiler emission reduction, and waste heat utilization, have successively been selected for multiple Shandong Provincial Department of Industry and Information Technology scientific and technological innovation projects, Shandong Provincial key projects, and Heze City innovation and excellence projects. We have accumulated 27 authorized utility model patents, 16 authorized invention patents, 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, utilizing the international plasma arc + filler wire tungsten inert gas (PAW-GTAW) welding technology. After provincial-level scientific and technological achievement evaluation, the technology level has reached an international standard in the field of deep cryogenic container manufacturing. Choose Zhongjie Special Equipment, and let's create brilliance together!