Variable-Pressure Vacuum Drying Equipment

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Product Code : 20

Product Description

Variable-pressure vacuum drying equipment

Description of variable-pressure vacuum drying equipment：
This kind of furnace adopts variable-pressure drying principle suggested by Dr. Moll from Germany, specialized for drying transformer and power capacitor bodies. Comparing to conventional vacuum heating drying method, drying duration of this variable-pressure type has been saved about 30-45%.

Application of variable-pressure vacuum drying equipment:

Drying transformer bodies in grade 10~110kV, capacity less than 100,000kVA
Drying transformer windings in 110~500kV grade
Drying current transformer and potential transformer bodies in 110~500kV grade
Drying power capacitors
Drying other electrical materials

Main features of variable-pressure vacuum drying equipment:

Compact structure, small occupation
High productivity: when drying one 110kV, 40000KVA transformer body, it will take only about 50 hours, close to that by kerosene vapor-phase drying equipment
Heating system is controlled by power control module, assuring even and stable temperature; Real power consumption during temperature-keeping is only about 35% of total power; There is no fluctuation of heating load and thus reduces actual heating power very much.
PLC control, high automation, more stable and reliable
Special baffle valves for vacuum drying, better vacuuming performance

Specifications of variable-pressure vacuum drying equipment:

Vacuum drying tank

Tank size: according to requirement
Ultimate vacuity: <50Pa (unloaded, cold)
Tank leakage: 300Pa•L/S
Heating temperature: 130℃
Temperature tolerance: ±2℃
Vacuum system
Ultimate vacuity: ＜10Pa (unloaded, cold)
Max. extracting speed: 900L/S

Adopts low-temperature condenser, better condensing result, shorter drying duration
Heating system: electric heating, power 96kW, heating oil media
Water-cooling system: can be cooling tower or special water cooler
Control system: Siemens PLC control, automatic controlling vacuity, heating and cooling.