Oil immersed transformer power transformer coil vacuum drying plant

Introduction

GH-PC series Pressure-changed vacuum drying plant is currently used for voltage 220kv and 110kv and below the power transformer , 500kv and below transformer and other paper-insulated power equipment ideal for drying equipment, it is compared to the traditional hot air circulation drying, ordinary vacuum drying and Low-frequency drying plant, processing time reduced by about 1/3, energy consumption decreased by 30% -50%, after treatment, the minimum water content of insulating materials can be 5ppm. Its equipment investment is only kerosene vapor phase drying equipment 25% -45%. Transformer manufacturers is the preferred drying equipment.

Structure

1, Vacuum drying chamber: According to the use of points divided into two kinds of round and rectangular, round manual lock manually open the door, the door is electrically open hydraulic locking, heated pipes arranged in the tank. Configuration trolley, for the transformer out of the chamber, in order to facilitate the general sinking the chamber below the ground to ensure trolley track and ground level. Users can also configure the air cushion vehicle.

2 ,Trolley system: a load trolley and drive device two parts, trolley for low-speed operation, sub-manual and automatic two kinds. The power of automatic trolley has the use of workshop and driving vehicle with two forms.

3 ,Vacuum system: According to the requirements of the configuration of two or three vacuum pump, in order to prevent water vapor on the pump corrosive, the system is equipped with a condenser.   

4 ,Heating system: The general use of thermal conductivity of oil as a heat transfer medium, with electric heater heating oil and a forced circulation of high temperature pump, through the vacuum tank exhaust pipe heat. System configuration temperature controller, using PID regulator, temperature control accuracy can reach 1 ° C. The system can also use steam heating and pneumatic diaphragm control valve.

5. Condensation system: It is mainly used for condensing the moisture evaporated from the dried object to protect the vacuum pump effectively. General small equipment use water cooling and large equipment plus industrial chillers.

6. Pneumatic system: Compressed air source, control valve, pressure detection system and other components for the vacuum, material valve control.

1 Round chamber

2 , Rectangular chamber

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