Special Dry Air Generator for Transformers Product Introduction
The KJ-2 series Special Dry Air Generator for Transformers is specifically designed to provide high-purity dry air with a dew point as low as -55℃ to -70℃ for large power equipment such as transformers and reactors during installation and maintenance. It can replace traditional drying methods such as hot oil circulation, nitrogen supplementation, and vacuum drying, offering high efficiency, economy, safety, and environmental friendliness. Dry Air Generator comprehensively utilizes the advantages of refrigerated dryers, desiccant dryers, coalescing oil-water separators, and fine filtration, scientifically combining freezing, adsorption, and filtration drying purification processes. Through reasonable pipeline connections and capacity matching, it produces high-quality dry air with a low dew point. With an integrated design, PLC automatic control, and automatic detection of various operating parameters, the structure is compact and reasonable, the drying effect is excellent, the regeneration gas consumption is low, and the service life is long. The composite desiccant has a good effect and a lifespan more than three times longer than ordinary adsorbents. It adopts microcomputer program control, which is efficient, energy-saving, safe, and reliable.
II. Dry Air Generator Working Principle
Atmospheric air enters the air storage tank through the air compressor. Most of the moisture is compressed and liquefied, then discharged through the drain valve, achieving the first drying of the air. Subsequently, it enters the refrigerated dryer where water vapor is condensed into water, achieving the second drying. Then it enters the adsorption dryer for the third drying, where the remaining trace moisture is adsorbed. Finally, it passes through high-precision air filters and is delivered to equipment requiring dry gas.
III. Dry Air Generator Product Features
◆ Unique rapid regeneration technology for desiccant
Dry Air Generator adopts rapid regeneration technology, and can provide qualified dry air within 5-20 minutes of operation. It truly achieves instant use without waiting.
◆ Low dew point of product gas
The core indicator to measure a dry air generator is the dew point of the supplied gas. The lower the dew point, the drier the air. Low dew point dry air will absorb moisture inside the transformer to improve its insulation performance. The series of dry air generators integrate compressed drying, refrigerated drying, and adsorption drying, and adopt a multi-stage filtration system. Using "strong composite molecular adsorbent", regardless of the moisture content in the air, the dew point of the product gas will quickly drop below -70℃.
◆ High-efficiency filtration system
Dry Air Generator adopts "gradual density" filtration technology with a filtration precision of 0.01μm and a solid particle retention rate as high as 99.99%. The primary filter has a filtration precision of μm, the secondary filter has a precision of 0.1μm, and the tertiary filter has a precision of 0.01μm.
◆ Completely abandon heating regeneration of adsorbent
The adsorbent adopts a heatless pressure swing automatic regeneration method, completely eliminating the need for manual baking of the adsorbent.
Dry Air Generator Technical Parameters
Model
KJ-2
Air Supply Volume (m3/min)
2
Working Pressure (MPa)
0.6-0.8
Dew Point of Product Gas (℃)
-40℃-- -75℃
Gas Operating Pressure (MPa)
0-0.3
Dust Particle Size (μm)
≦0.01
Adsorbent Regeneration
Heatless automatic regeneration
Adsorbent
Strong composite molecular adsorbent
Ambient Temperature (℃)
-20-40
Power (KW)
18
Power Supply
Dry Air Generator Three-phase four-wire 380V/50HZ (custom power supply available)
