Transformer Oil Regeneration Plant CMM-R2

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GlobeCore regeneration units now offer two (2) revolutionary features:

(1) Energized transformer oil processing; and

(2) Automatic Sorbent Reactivation.

The GlobeCore Process is performed continuously on most energized transformers without the need to remove, replace, and dispose of contaminated Fuller’s Earth sorbent material. No hazardous waste and one man crew equals lower costs and efficient operations.

Technical Specification

NoParameter 
1Processing rate, m3/hour0.3*
2Sorbent reactivation duration, hours (max)16
3Power consumption, kW10
4Three phase 60Hz AC voltage, V380
5

Dimensions, mm max

– length

– width

– height

 

2500

2100

2300

6Weight, kg max2050

* Processing rate and the amount of oil processed depends on the initial quality of the oil

The CMM-R transformer oil regeneration unit has been developed to extend transformer service life by restoring the dielectric strength and chemical composition of electrical insulation oil.

The process of restoration involves removal of oil decomposition products and acidic compounds of the oil, which increases its oxidation stability and reduces gas solubility.

The unique feature of the CMM-R unit is the capability to regenerate insulation oil directly in a transformer, which can still be operated online at the time of treatment. Processing oil in an on-line transformer allows removal of sediment from winding insulation and its extraction by sorbent.

Another feature of the regeneration unit is the Fuller’s earth sorbent with multiple reactivation capability. This allows continuous oil processing without the need to stop and change or replenish the sorbent load.

The process of oil regeneration involves passing the oil through the micro porous sorbent for “molecular filtration”, removing harmful substances and oil degradation products and trapping them in sorbent granules.

When the sorbent is saturated, the unit switches to sorbent reactivation mode. This process clears the pores of the sorbent, removing all contaminants into a special collection tank and a charcoal filter.

The sorbent can be reactivated approximately 300 times, in terms of lifecycle this means 1.5 – 2 years of operation.

When the sorbent is completely exhausted, it poses no environmental hazard and can be disposed of in a regular manner.

Oil regeneration has shown good results of oil processing.

The technology has proven to be very efficient and effective.

Main Features of th GlobeCore Process:

  • Fully Automated Process and Smart Phone and Internet Monitoring;
  • Simplicity of Operation and and Servicing;
  • Service Life Extention Program for electric power transformers;
  • Eliminates the need to Dispose of used Oil;
  • The Most Environmentally Friendly Equipment in the Industry. 

 

 

 

 

GlobeCore CMM Units can be applied for Turbine Oil Processing

Unit design

Figure 1. General view of the unit

Figure 1. General view of the unit

Figure 2. General view of the unit

Figure 2. General view of the unit

The unit consists of the following components:

  1. Frame – welded. The frame supports all components.
  2. Buffer tank. This oil tank contains the oil for priming the unit and condensate for discharge.
  3. Electric control cabinet. The cabinet contains components for registration and display of temperature indications, as well as pump control buttons.
  4. Charcoal filter. This component purifies exhaust during sorbent reactivation.
  5. Input pump. Pumps the oil into the unit.
  6. Transfer pump. Pumps the oil during sorbent reactivation.
  7. Filter. Filter the oil.
  8. Right-hand column. Regenerates transformer oil.
  9. Vacuum pump. Creates vacuum in the system during sorbent reactivation.
  10. Intermediary tank. Separates air bubbles during regeneration of oil, also collects and removes condensate formed during reactivation.
  11. Oil collector. Condenses moisture and heavy fractions during sorbent reactivation.
  12. Control column. Regenerates transformer oil.

Unit installation.

The unit must be placed on a foundation. The unit does not require anchorage to the foundation. When installing the unit, consider ease of maintenance, pipeline and electric cable connections, as well as operation safety.

The placement area must be equipped with a water drainage facility.

Unit operation

Figure 3. Flow diagram.

Figure 3. Flow diagram.

Flow diagram description

Position Item Description
MV1Ball valveOil input valve
MFMesh filterCaptures large solid particles
Р1Input pumpDraws in the oil for processing
MV21Ball valveBypass valve
MV19Ball valveSampling valve
FMFlowmeterIndicates instantaneous flow rate
М1Axial manometer 0-10 bar ф63 
VRRegulation valveCuts off the vacuum line during oil regeneration.
MV2Ball valveAir cut off valve
VB1Return valve 
М2Radial vacuum meter -1 to 0 bar 
MV5Ball valveAir input valve
MV20Ball valveColumn cooling
MV3, МV4Ball valveOil to columns
Н1, Н2HeaterSorbent reactivation
Т1-Т7Thermistor 0-1200СTemperature control during reactivation of sorbent
С1-С2Sorbent columnTransformer oil regeneration
DPDrain potIn this vessel, air bubbles are separated during oil regeneration; also, condensate formed during sorbent reactivation is collected and pumped out
AVAir release valveRemoval of air from DP
LS1Level sensorIndicates oil in the bottom of the DP
LS2Level sensorIndicates oil in the top of the DP
MV10Ball valveOil collector cut off
MV17Ball valveOil drain from DP
MTOil collectorCondensation of moisture and heavy fractions during reactivation
LS3Level sensorMax level of liquid in the oil collector
MV18Ball valveCondensate drain from the oil collector
MV11Ball valveVacuum cut off valve
VPVacuum pumpCreates vacuum in the system during reactivation
CFCharcoal filterPurifies exhaust during reactivation
MV12Ball valveDrains condensate from charcoal filter
Р2Transfer pumpPumping of processed fluid
MV16Ball valveBypass valve
VB3Return valvePrevents oil from being sucked into DP
ВТBuffer tankThe oil tank is used to prime the unit with oil and to collect condensate
LS4Level sensorLimits oil level in the buffer tank
MV8Ball valveSettling vessel cut off valve
MV9Ball valveBuffer tank cut off valve
MV13Ball valveCondensate and bad oil drain from buffer tank
MV14Ball valveSettling tank drain valve
MV7Ball valveOil supply from buffer tank
FFilterOil filtration
MV15Ball valveSampling and drain valve
VB2Return valve 
MV6Ball valveOil outlet valve
LS5Oil level sensorStop the unit if an oil leak is detected

 The electrical components of the unit are controller from the control cabinet, which contains connections, controls and measuring systems.

CMM-R2 during factory quality acceptance testing

CMM-R2 during factory quality acceptance testing

Transformer Oil regenerated by CMM-R

Transformer Oil regenerated by CMM-R

GlobeCore

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