News Details

AD-2 Dry Air Generator Detailed Information

Product Functions:

 AD-2 Dry Air Generator is suitable for providing dry air required during maintenance of large power equipment such as transformers and reactors in power systems, and can replace the traditional transformer hot oil circulation drying method. It is also suitable for air drying and circulating drying in warehouses, packaging, electronics and other industries. Additionally, it is particularly suitable for drying hydrogen in generator hydrogen cooling systems, as well as drying SF6 gas in SF6 equipment. Using the AD dry air generator for power equipment maintenance is not affected by changes in external weather conditions. Especially for overnight operations, simply seal all flanges and fill with dry air at 0.02-0.03Mpa, so transformers and reactors do not need oil injection and will not be affected by moisture. This reduces the workload of daily oil extraction and injection, achieving the effect of shortening maintenance cycles and improving maintenance quality. During the oil filtration process, it can inflate and dry the equipment tank and oil. When filtering oil in rainy or humid environments, it ensures improved oil insulation and reduced moisture. When idle, it can be used as an indoor air conditioner at the construction site.

Working Principle:

After atmospheric air enters the refrigeration unit below zero degrees Celsius, most water vapor condenses into ice water, and the air undergoes the first drying. Then it enters the dry air filter, passes through color-changing silica gel for the second drying, which adsorbs the remaining water vapor, and after filtration, it is delivered to the equipment requiring dry gas. When the color-changing silica gel becomes saturated with water absorption, its CoCl2 changes from blue to red, indicating that the silica gel has absorbed water to saturation and needs to be replaced with dried blue silica gel to ensure the dry state of the outlet gas.

Technical Parameters:

Performance and Features:

AD-2 Dry Air Generator is a low dew point, mobile, air-cooled high-purity gas generation device composed of four parts: air source system, freeze-drying system, adsorption drying system, and Schneider electric control system.

Air source system composition: It consists of an air dust filter, an oil-free air compressor unit, an air cooler (air-cooled), a gas-water separator, and filters, outputting clean and oil-free gas.

Freeze-drying system composition: This device mainly adopts an imported fully enclosed high-temperature compression refrigeration unit, with stable and reliable performance, and can obtain greater cooling capacity. The system configuration adopts an imported fully enclosed compressor unit, air heat exchanger, evaporator, gas-water separator, and fine filter. In the refrigeration process, R22 refrigerant first passes through the fully enclosed high-temperature compression refrigeration compressor, cooler, desiccant, solenoid valve, expansion valve, and finally returns to the refrigeration compressor through the evaporator, obtaining a low-temperature environment of 0-5 ℃ inside the evaporator.