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Add: Rugao City, Jiangsu Province, China
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Vacuum oil treatment equipment

Vacuum oil treatment equipment Vacuum oil treatment equipment Vacuum oil treatment equipment
Product name:Vacuum oil treatment equipment


This plant has big treating capacity for degassing and filtering insulation oil (or silicon oil) used in super high voltage grade 35kV~1000kV oil-immersed instrument transformers, transformers and capacitors.


- The plant is equipped with a crude oil tank with adequate volume for storing crude oil; The tank has functions such as metering, max. & min. level controlling, breathing and sewage discharging, etc.

- Equipped with 2 sets vacuum degassing tanks (6 – 12tons), which is has functions such as heating, temperature keeping, max. & min. level controlling, etc.

- Equipped with clean oil storing tank for storing qualified oil after treated.

- Adopts mutual filtering or single filtering process.

- Combined with filtering function of vacuum oil filter, increases the filtering result.

- Equipped with advanced and reliable vacuum system, heating system and measuring & control system to make sure accurate and reliable control.

- Pipeline layout is reasonable, can be extended to join with vacuum oil-filling system, recycling system and crude oil system outside of factory to become a complete oil system.

- Processing capacity: 6-12m3/h

- Performance value of electric insulating oil after treatment:

Voltage withstanding: ≥65kV (under standard electrode)
tgδ: ≤ 0.04%

Moisture content: ≤5ppm

Air content: ≤0.2

Filtering fineness: ≤3μm

Gas chromatograph: C2H2=0, H2 ≤5ppm, total hydrocarbon ≤0.4ppm.

Process flow

1.      Preparation phase:

Crude oil --- crude oil tank --- vacuum oil filter (or plate-frame oil filter) --- vacuum degassing tank (close the inlet valve when the vacuum degassing tank is full of oil).

 2. Filtering phase:

Filtering mode (mutual filtering): vacuum degassing tank 1 --- filter (vacuum oil filter or other filter) --- vacuum degassing tank 2 --- circulated degassing between both vacuum degassing tanks till the sampling is accepted --- degassed oil tank.

3.      Oil feeding:

Keep the temperature of degassed oil tank within 60±5, the degassed oil can be transported by oil pump to each oil filling ports after received the oil filling signal from control system.

4.      Other requirements:

 ●The level meter in degassed oil tank can really show the quantity of oil in the tank.

● Automatic constant temperature, the heating system will control the temperature of oil in degassed oil tank within 60±5 automatically.

● Maximum & minimum level meter in each tank has alarm and protection functions.

● Vacuum system has both auto and manual control modes.

● Auto and manual control modes, necessary protection, alarm and other functions are available in each phase.

● The mutual filtering can be transformed automatically, no need operator to watch over the operation, it is safe and reliable.

● Processing capacity: ≥6000L (adjustable as per requirement).

● Operating vacuum: ≤10-100Pa (adjustable as per the characteristics of product).

● Ultimate vacuum: ≤10Pa

● Pressure of oil filling: 0.15MPa±0.01MPa (adjustable).

● Operating temperature of oil: 60±5

● Filter fineness: ≤5µm

● Pumping speed of vacuum unit: 2000m3/h

● Pumping speed of oil pump: ≥6m3/h (adjustable as per requirement).

●Usable capacity of vacuum degassing tank: 612 m3 (as per the requirement).

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