Double Vacuum Pump Units Insulating Oil Purification for Transformer

Double vacuum pump units insulating oil purification for transformer 

Application:
DVP series double stages vacuum transformer oil purifier is special designed for processing insulating oil of high voltage electric equipments(especially for more than 500KV UHV 
insulating oil) in workshops or the field,storage tanks or drums, it adopts double stages 
vacuum source, double stages vacuum dehydration and degasification vessels, three 
stages precise filtration system, which can separate moisture, gas, particles and other 
harmful ingredients from oil much quickly and effectively to ensure the dry level and 
dielectric strength improving greatly.. Meanwhile, DVP machine can be used for online 
oil treatment for transformers and vacuum drying and oil-pumping for electrical equipment. 
It is also applied to the above 110KV EHV transmission and distribution equipment, 
capacitor oil, cable oil, mutual inductor oil etc.

Features:
1. Horizontal double vacuum separation technology, doubling the evaporation area and 
    degassing time 
2. Double stages vacuum source and dehydration, degasification system, vacuum pump 
    with roots pump, high speed vacuum evacuation, ultimate vacuum ≤ 5Pa
3. Multi-stage precise filtration system with gradually increasing precision, which can 
    effectively remove mechanical impurities from oil.
4. Automatic double-infrared liquid level controller, pressure protector, which ensure 
    long-term safely and reliable operation.
5. Fully automatic temperature controlling system and multi-stages electric oil heater 
    adopts low-load design to ensure uniform heating oil, the load is less than 1.0W/cm2, 
    oil level and temperature protection of heater, which avoid cracking and aging of oil.
6. Automatic defoaming system with dual electronic monitoring system, which avoid the 
    foam ejecting and gushing to vacuum pump.
7. Advanced cooling system of vacuum pump, it reduces the frequency of oil's 
    replacement and extends the life of vacuum pump.
8. Interlocked protective system connects oil pump, heater and liquid level sensor, 
    avoiding blank heating, blank pumping, oil leak and electricity leak. If there is any fault, 
    machine will be power off automatically.
9. Online oil treatment, vacuum drying and vacuum oil-filling for electric equipments.
 Technical Parameters
 
 
 
Index Of Purified Oil 
Working Principle 
The transformer oil is drawn into the system by the use of the vacuum created by the 
vacuum system and is passed through an inlet coalesce filter, before entering into the 
vacuum chamber, where water and gases contained in the oil are thoroughly exposed 
to vacuum by efficient dispersion and removed through a vacuum pumping; the oil is 
heated by the electrical heater to the operator pre-set processing oil temperature. The 
sprayer inside the vacuum chamber maximizes the exposure of oil to the effect of vacuum, 
which make moisture and gas dissolved in oil evaporated and discharged through vacuum
pump. After dehydration and degasification,the purified oil is discharged by a pump through
second filter and fine filter, where a fine polishing of oil takes place. After passing through 
the fine filter, the oil flows through the outlet or re-circulation valve.

 

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