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 seven business centers: boilers, deep-freezing containers, pressure vessels, central air conditioning, engineering installation, international trade, and Internet of Things. It operates three factory sites on Jinnan Road, East Changjiang Road, and Bohai Road, covering a total area of 200,000 square meters, with the main workshop spanning 83,000 square meters. The company currently employs 710 people, including 247 engineers and technicians, and 82 intermediate-level technical personnel. 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, it was identified as a "Specialized and New Small Giant Enterprise" by the Ministry of Industry and Information Technology.
The testing and maintenance of liquid oxygen storage tanks are crucial for ensuring safe operation and extending their service life. Below is a general breakdown of the testing and maintenance procedures for liquid oxygen storage tanks: - Visual Inspection: Regularly inspect the exterior of the liquid oxygen storage tank for signs of corrosion, wear, and cracks. In case of any abnormalities, promptly repair or replace the affected parts. - Internal Cleaning: Regularly clean the interior of the liquid oxygen storage tank to remove accumulated impurities and dirt. Use appropriate cleaning agents and tools to avoid damaging the tank. - Level Measurement: Conduct regular level measurements to ensure the liquid level within the storage tank is within a safe range. Use a level gauge or other measuring equipment, and record the results. - Pressure Testing: Regularly perform pressure tests to verify the tank's pressure-bearing capabilities. Pay attention to controlling pressure and time during testing to ensure safety and accuracy. - Leak Detection: Regularly check for leaks to ensure the tank's sealing integrity. Use leak detection instruments, such as gas detectors or foam leak detectors, for the inspection. - Valve and Pipeline Inspection: Regularly inspect the valves and pipeline connections of the liquid oxygen storage tank to ensure proper sealing and no leakage. Promptly repair or replace any issues found. - Maintenance Records: Document the testing and maintenance activities of the liquid oxygen storage tank, including inspection dates, contents, and results. These records help track the tank's maintenance history and issue resolution. - Scheduled Maintenance: Develop a regular maintenance plan based on the tank's usage and requirements. This includes lubrication, bolt tightening, and replacement of seals to ensure normal operation.

Low-temperature carbon dioxide storage tanks offer several advantages: - Low-temperature storage capability: These tanks can store carbon dioxide at low temperatures, typically between -40°C and -70°C. This low-temperature storage allows carbon dioxide to be stored in liquid form, significantly reducing the space required for storage. - High storage density: Due to the liquid form of carbon dioxide at low temperatures, its storage density is relatively high. Compared to gaseous storage, liquid storage can hold more carbon dioxide in a smaller tank, improving storage efficiency. - Environmental friendly and renewable: Carbon dioxide is an eco-friendly gas, with minimal harmful by-products during storage and use. Moreover, it can be reused through technologies like capture and recycling, reducing environmental impact. - High safety: Low-temperature carbon dioxide storage tanks are made from high-strength materials, featuring good sealing and corrosion resistance. They are equipped with safety valves and pressure relief devices to effectively control internal pressure and temperature, ensuring safety during storage. - Wide application: These tanks are widely used in various industries, including food and beverage, pharmaceutical, and chemical industries. They can be used for freezing food, refrigeration equipment, gas supply, and more, meeting diverse industry needs. In summary, low-temperature carbon dioxide storage tanks provide low-temperature storage capability, high storage density, environmental friendliness, renewability, high safety, and wide application. These advantages make them crucial equipment for storing and using carbon dioxide in many industries.

Carbon dioxide tank level gauges are devices used to measure and monitor the liquid level of carbon dioxide within the tank. Depending on different working principles and application requirements, common types of carbon dioxide tank level gauges include the following: - Buoy Level Gauge: Uses a buoy to indicate the liquid level by its floating and sinking, measured through a mechanical device or an electrical signal sensor connected to the gauge. - Pressure Level Gauge: Measures the level by utilizing the relationship between liquid pressure and level. It calculates the level height by measuring the pressure change on a pressure sensor. - Ultrasonic Level Gauge: Measures the level using the propagation time of ultrasound. An ultrasonic transmitter emits sound waves, and when the beam encounters the liquid surface, some of the beam is reflected back. The level height is calculated by measuring the reflection time. - Capillary Level Gauge: Uses the capillary principle to measure the level. By inserting a thin tube into the liquid, the liquid rises in the tube, and the level height is calculated based on the rise. - Level Gauge: Measures the level by reflecting waves. The transmitter emits waves, and when the beam hits the liquid surface, some of the beam is reflected back. The level height is calculated by measuring the reflection time. These level gauges can be applied to carbon dioxide tanks based on specific needs and tank design. When selecting and installing level gauges, consider factors such as liquid properties, working environment, precision requirements, and ensure they match the tank's safe operation and monitoring system.

清洁低温液体储罐的过程需要谨慎操作，以确保安全性和有效性。以下是一般的清洁步骤： 安全准备：在清洁液体储罐之前，确保储罐内的液体已经完全排空，并且储罐的压力已经释放。确保所有相关的安全设备和阀门处于关闭状态。 防护措施：低温液体储罐通常存储着冷的液体，如液氮或液氧。在进行清洁操作时，必须佩戴适当的个人防护装备，如绝缘手套、、防护服等，以防止冷或其他伤害。 清洁剂选择：选择适合清洁低温液体储罐的清洁剂。清洁剂应具备良好的腐蚀性能和低温适应性。可以咨询清洁剂供应商或储罐制造商以获取建议。 清洁过程：将清洁剂注入储罐中，使用适当的工具（如喷洒器、刷子等）进行清洁。根据储罐的尺寸和污染程度，可以选择手动清洁或使用清洗设备。 冲洗和排放：清洁完成后，使用清水或其他适当的冲洗剂进行冲洗，以确保清洁剂和污物。冲洗完成后，将废水和废液排放到合适的处理系统中，遵循环境保护的相关规定。 检查和验证：清洁完成后，进行储罐的检查和验证，确保储罐内部干净、无残留物，并符合相关的安全和卫生要求。 需要注意的是，清洁低温液体储罐的具体步骤和要求可能会因不同的储罐设计和使用场景而有所差异。在进行清洁操作时，应遵循相关的安全操作规程和标准，确保操作的安全性和有效性。好咨询工程师或储罐制造商以获取具体的清洁指导。
ZJ Special Equipment adheres to the great vision of "realizing employees' dreams, creating customer value, and striving for the prosperity and strength of our motherland," focusing on the development of green energy equipment industry, and dedicating products and services with high cost-performance to society!