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, B-grade boiler installation, and GB2/Class, GC2/Class pressure pipeline installation licenses, as well as mechanical and electrical equipment installation contracting qualifications. It is a member of the China Boiler and Water Treatment Association, the China Chemical Equipment Association, and a council member of the Shandong Equipment Manufacturing Association. The company has also 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.
Carbon dioxide tanks and liquid oxygen tanks are equipment used for storing different gases. They have some physical properties differences: Physical State: Carbon dioxide (CO2) is a gas at room temperature and requires low temperatures and high pressures to be converted into a liquid. Liquid oxygen (LOX) is a liquid at room temperature and can maintain its liquid state without special conditions. Storage Temperature: The liquid storage temperature of carbon dioxide typically ranges from -40°C to -78.5°C, while the liquid storage temperature of liquid oxygen usually ranges from -183°C to -183.15°C. The storage temperature of liquid oxygen is lower and requires stricter insulation measures. Storage Pressure: The liquid storage pressure of carbon dioxide typically ranges from 5 to 20 MPa (megapascals), while the liquid storage pressure of liquid oxygen usually ranges from 0.2 to 2 MPa. The storage pressure of liquid oxygen is lower. Density: The density of liquid carbon dioxide is approximately 0.8 g/cm³, while the density of liquid oxygen is approximately 1.14 g/cm³. The density of liquid oxygen is higher. Safety: Liquid oxygen has a high oxygen content, making it highly flammable and oxidizing, necessitating stricter safety measures. Carbon dioxide is relatively safe but can still be harmful to humans at high concentrations.

Common defects that may occur during the use of carbon dioxide storage tanks include deformation. Below are some causes that may lead to tank deformation: Overpressure: When the internal pressure of the tank exceeds its design pressure, it may cause deformation. This could be due to operational errors, system failures, or other reasons. Temperature Fluctuations: Carbon dioxide tanks expand and contract with temperature changes, and if the temperature changes are too great or too rapid, it may result in tank deformation. Internal Corrosion: If there is internal corrosion in the tank, it can damage the structural integrity of the tank, leading to deformation. External Damage: External impacts, compressions, or other physical damages can cause tank deformation. Incorrect Installation or Use: Incorrect installation or usage methods may lead to uneven stress on the tank, causing deformation. Tank deformation can reduce the structural integrity of the tank and even pose risks of leakage or rupture. Therefore, it is important to regularly inspect and maintain the integrity of the tank, as well as to follow proper operation and installation procedures. If tank deformation or other defects are suspected, use of the tank should be immediately stopped, and professional assistance should be sought for inspection and repair. Do not attempt to repair or continue using a defective tank to ensure operational safety.

Key measures to ensure the quality of CO2 storage tanks include the following aspects: 1. Selecting qualified suppliers: Choose suppliers with a good reputation and experience, ensuring their provided tanks meet relevant quality standards and regulations. This can be achieved by assessing the supplier's qualifications, referring to customer reviews, and conducting on-site inspections to select suitable suppliers. 2. Strict quality control: Implement rigorous quality control measures during the manufacturing process of the tanks. This includes selecting and inspecting raw materials, controlling production processes, monitoring process parameters, and conducting product testing and inspections to ensure the tanks meet quality requirements. 3. Compliance with standards and regulations: The design, manufacturing, and installation of the tanks should adhere to relevant standards and regulations, such as industry standards and regulations. These standards cover aspects like tank structural design, material selection, welding techniques, corrosion prevention measures, safety valves, and pressure sensor configurations. 4. Regular inspections and maintenance: Tanks in use require regular inspections and maintenance to ensure safety and reliability. This involves checking the tank's appearance, seals, valves, and pipeline connections, conducting regular pressure tests and leak detections, and promptly addressing any anomalies. 5. Establishing a quality management system: Set up a comprehensive quality management system, including quality control processes, document records, quality training, and internal audits. By establishing a quality management system, the quality control and continuous improvement of the tanks can be ensured. 6. Third-party testing and certification: Entrust third-party institutions to conduct testing and certification of the tanks to verify their quality and compliance. Third-party testing and certification bodies typically possess independence and objectivity, providing objective assessment and certification results. 7. Through the implementation of these measures, the quality of CO2 storage tanks can be effectively ensured, enhancing their safety and reliability.

Carbon dioxide level gauges are devices used to measure and monitor the liquid level of carbon dioxide within storage tanks. Common types of carbon dioxide level gauges, based on different working principles and application requirements, include the following: - Buoy Level Gauges: Use the floating and sinking of a buoy to indicate the level, measured by a mechanical device or an electrical signal sensor connected to the gauge. - Pressure Level Gauges: Measure the level by utilizing the relationship between liquid pressure and level. The level height is calculated by measuring the pressure changes on a pressure sensor due to the liquid. - Ultrasonic Level Gauges: Measure the level using the propagation time of ultrasound. An ultrasonic transmitter emits waves, and when the beam hits the liquid surface, some of it is reflected back. The level height is calculated by measuring the reflection time. - Capillary Level Gauges: Use the capillary principle to measure the level. By inserting a thin tube into the liquid, the liquid rises within it. The level height is calculated based on the rise of the liquid. - Wave Level Gauges: Measure the level by reflecting waves. A transmitter emits waves, and when the beam hits the liquid surface, some of it is reflected back. The level height is calculated by measuring the reflection time. The application of these level gauges in carbon dioxide storage tanks can be selected based on specific requirements and tank design. When selecting and installing level gauges, consider factors such as the properties of the liquid, working environment, and precision requirements, and ensure they match the tank's safe operation and monitoring system.
Chongjie Special Equipment upholds the great vision of "realizing employees' dreams, creating customer value, and striving for the prosperity and strength of our motherland," and is dedicated to the development of the green energy equipment industry. We offer society high-value products and services!