www.oilregeneration.globecore.com

GlobeCore CMM (UVM) 10

Mobile Transformer Oil Purification Plant with High Vacuum

GlobeCore CMM (UVM) 10

CMM-10 (UVM) depending on your requirements will be mounted: on a roadworthy trailer with torsion suspension, appropriate reflectors and tail lights and capable of being

towed at speeds of up to 80 km/h. It will be enclosed with water proof metal covers (protection class IP45) and have a mechanism to secure plant in stationary position while in operation. Maximum noise level emitted by the unit is below 80 db. CMM-10

(UVM) will have Camlock (quick couplings) on inlet and outlet.

Production capacity of CMM-10 (UVM) is 10000 L/H in Thermo-Vacuum Mode and

15000 l/h in Heating and Filtration Mode. Allowing to process up to 360000 L of

transformer oil per day and provide:

Globecore GmbH

Edewechter Landstraße 173,

Oldenburg-Eversten,

Deutschland, 26131

Tel: +49 4484 202 35 91

Email: chyk@globecore.de

Skype: mg2globecore_de

• Removal of Water from 100 ppm down to 10 ppm and from 50 ppm to 5

ppm in a single pass and down to 2 ppm after 2 passes (ASTM method D-1533).

• Reduction of Gas content from fully saturated with air (10 to 12% by

volume) to less than 0.05% (ASTM D-2945) in a single pass.

• Removal of Particulate Matter to 1 micron

• Improvement in dielectric strength up to 70 kV.

COMPONENTS DESCRIPTION:

I. VACUUM SYSTEM

CMM-10 (UVM) will have the following two stage vacuum facilities:

1. Three “GlobeCore” Rotary Vane Positive Displacement Pumps

Pumping Speed 3 x 100 m3/h

Ultimate Pressure 0.5 mbar

2. “GlobeCore” Vacuum Booster

Pumping Speed 2160 m3/h

Ultimate Pressure 0.01 mbar

II. VACUUM CHAMBER

This Oil Purification plant has a Vacuum Column with Coalescers.

Vacuum Chamber Vessels and all internal parts are made of carbon steel and

feature Coalescers, Sight Glass, Oil Level Controller, Foam Sensor and Vacuum

Gauge. Vacuum Chamber’s rigid design makes it suitable for stationary and

mobile installation. Appropriate flexible connections are provided to the outlet

pump and inlet pump to minimize negative effect of vibration during plant

operation and transportation.

Vacuum Chamber

1-Vessel

2-Cover

3-Vacuum Pump Connection

4-Oil Inlet

5-Oil Outlet

6-Illuminated Sight Glass

7-Level Sensors

8-Coalescers

9-Vacuum Sensor

10-Air Admittance Valve

11- Oil Indicator

Coalescers - built-in fiberglass coalescers are provided for the maximum

exposure of oil to the effect of vacuum. Each litre of oil is exposed by coalescers

to corresponding surface of up to 500 m2. Due to reduced pressure dissolved

water and gases are vaporised through secondary chamber and filter into

atmosphere.

Secondary Chamber (Oil Trap) – serves as safety feature to ensure that no oil

is pulled into the vacuum pump. It is equipped with oil level sensor which will

activate the alarm in case of oil presence.

Oil Level Controller – consists of three capacitive probes provided to maintain

required level of oil in the Vacuum Chamber.

Vacuum Gauge – is provided to monitor Vacuum level in the Vacuum

Chamber. Vacuum gauge will be absolute type with display in mbar and torr.

Vacuum Ports – vacuum connection is provided to simultaneously pull vacuum

on a transformer being filled.

Sampling Ports – inlet and outlet oil ports are provided for incoming and

processed oil.

Air Admittance Devise – is installed to automatically break the vacuum within

the plant, when the plant is shut down.

Foam Sensor - prevents excessive foaming.

III. OIL HEATER

Oil heater is a chamber keeping 3-cell heating cluster, inlet and outlet pipelines,

and drainage valve.

Use separate controls on the control panel for each of three cells to manage

overall cluster. Operate either each separate or any two parallel cells as well as all

cells simultaneously (mode capacity results in operating cells; thus, one or two

Oil heater 1 – 3-cell heating cluster;

2 –inlet cold oil branch pipe; 3 –outlet hot oil branch pipe;

4 – drainage valve

cells are sufficient for degassing mode while heating and filtering mode supposes

three cells operating).

Oil temperature after heating is controlled by the measuring regulator using

thermistor Th2.

Flow relay FR prevent damage to heating section, signaling presence of oil flow.

The heater is also equipped with thermostat TR for additional control.

IV. INLET AND OUTLET OIL PUMPS

Inlet Oil Pump: Centrifugal Pump with power consumption of 7.5 kW and

maximum capacity of 30 m³/h.

Outlet Oil Pump: Centrifugal Pump with power consumption of 7.5 kW and

maximum capacity of 30 m³/h.

V. FILTERS

Unit input is mesh coarse filter equipped to purify oil of mechanical

contaminants. Filtration fineness is caused by body fixed brass mesh of 200

micron cells. To wash filtering element remove mesh filter off the body and

rinse it with clean transformer oil.

Fine filter the oil to be treated. Filtration fineness is 1 micron.

Coarse preliminary filter 1 – inlet oil branch pipe;

2 – shut-off valve; 3 – outlet oil branch pipe;

4 – filter body; 5 – inspection hole (for oil level control); 6 – oil stream sensor;

7 – press lever of filter lid; 8 – sludge drainage valve

9 – air release valve

The filter is lid and frame keeping two filtering packages inside. The top lid has

a valve to release air when oil fills the filter and let the air in when oil exits the

filter. Body bottom is mounted with valve keeping branch pipe. Inlet and outlet

oil branch pipes are body welded.

To replace filtering elements (cartridges), open valve 3 to discharge sludge off

the cartridge filter. Then make several turns of union nut lever 7

counterclockwise, turn lid home the same direction and remove it off the filter,

remove union nut and take filtering element off. Place new cartridge and fix it

with union nut. To place lid onto the filter, perform reverse sequence of

removal.

VI. ALARMS AND INTERLOCKS

GlobeCore’s CMM plants feature the following safety devises which ensure

simple and reliable operation and will safely shut down the system in case of any

alarm situation:

High Level Alarm - will alert plant’s operator by activating sound and light

alarms and shut down the system safely should high level of oil persist.

Low Level Alarm – interlocked with the inlet pump low level alarm will safely

shut down the plant in case of insufficient oil level.

Flow Sensor - only activates the Heater when oil flow is detected.

Overloads – all motors and Oil Heater are protected by overloads.

Alarms – sound and light alarm with silence button will alert plant’s operator of

any emergency situations.

Fine filter

1 – inlet oil branch pipe;

2 – outlet purified oil branch pipe; 3 – sludge drainage valve; 4 – filtering element;

5 – air discharge plug; 6 – magnets;

7 - lever

VII. INSTRUMENTATION AND CONTROLS

Control panel is a dust proof enclosure to IP54 featuring the following elements:

Control Panel

1–Power “on” and “off” switch

2–Temperature controllers

3–Digital vacuum gauges

4–Power indicator «Power»

5–Emergency «STOP» button

6–Indicating lamp of correct phase

connection «Phase control»

7–Mode selection switch «Mode»

8–Push button «Start»

9–Push button «Stop»

10–LEDs operation control button «Check»

11–Vacuum pumps switches

12–Oil pumps switches.

13–Heater switch

14–Valves control switches

15– Manometers

VIII. OIL TRAP

Oil trap is designed for prevention of vacuum system from ingress of processed

oil. For general view of the trap see Figure 6. The trap is a metal case 1 with

welded connections to vacuum chamber 2 and vacuum valve 3, with oil indicator

4, oil presence sensor 5 and emergency vacuum release valve 6. Ball valve 7 is

installed in the bottom of the trap for connection with reservoir. The reservoir is

designed to drain the oil during operation of vacuum pumps; to do so, close the

valve on the trap and open the drain valve on the reservoir, after draining is

complete, close the drain valve and open the trap valve.

Oil trap

1 – body; 2 – vacuum column connection;

3 – vacuum valve connection; 4 – oil indicator; 5 – oil level sensor;

6 – electromagnetic valve; 7 – drain valve

IX. FLOW DIAGRAM

Typical Flow Diagram CMM-10(UVM)

VT – vacuum chamber (tank); P1 - P2 – oil pumps; V1 – disk shutter; V2 – V7 – ball valves D 32; V8

– V9 – ball valves D 20; V10 – V17, V19 – V20 – ball valves D15; V18 – vacuum valve; V21 – V23

– ball valves D 32; Н – oil heater; CV – check valve; FP1, FP2 – fine filter; М1 – М4 – pressure

gauges; Th1 – Th2 – temperature controller sensor; TR – thermostat; FR – flow relay; VR1 – VR2 –

vacuum relay; L1 – L5 – level sensors; VP1 – VP4 – vacuum pumps; PF – mesh filter; CP – oil trap;

EV1 – EV2 – electromagnetic valve sensors; VP1, VP2 – Vacuum Pumps; РF – Mesh Filter; R – Oil

Trap, RP– Pressure Relay.

X. OPERATIONAL PRINCIPLE

CMM-10(UVM) can operate in the following modes:

- Oil heating, water removal and filtration

- Degassing, filtration and water removal

- Pulling vacuum on a transformer tank

- Diagnostic mode

- Oil heating and filtration mode: oil is drawn by Inlet Oil Pump through Mesh

Filter into Oil Heater where it is heated to required temperature and through

Coarse Filter Electromagnetic Valves and Ball Valve to external vessel or

transformer’s tank.

- Degassing, filtration and water removal mode: transformer oil is drawn by

Inlet Oil Pump through Mesh Filter into Oil Heater and through 2 microns Coarse

Filter, Electromagnetic Valve into Vacuum Column. In the Vacuum Column oil

is pumped through Coalescers used for maximum exposure of oil to the effect of

vacuum. Dissolved and free water and gasses are removed from the oil. Vacuum

Pumps and Vacuum Booster are used to maintain required level of vacuum.

Treated oil is drawn by Outlet Oil Pump through 1micron Fine Oil Filter,

Electromagnetic Valve and Ball Valve into external vessel or transformer’s tank.

- Puling vacuum on a transformer tank is carried out by Vacuum Pump and

Vacuum Booster through the Vacuum Port.

- Diagnostic Mode is required to prevent contamination of oil in a transformer

tank or external vessel with unqualified oil during start-up. In this mode Vacuum

Column is filled with oil and then oil is recirculated through Vacuum Column,

Outlet oil Pump, Fine Filter, Electromagnetic Valve, Oil Heater and Coarse Filter.

XI. SPECIFICATIONS

Parameter Value

1 Capacity, m3/h, minimum

- in degassing, drying and filtration modes 10

- in heating and filtration modes 15

2* Processed oil parameters:

- maximum gas content by volume, % 0,1

- maximum moisture content by mass, ppm 3,0

- max filtration fineness, micron 1

3 Maximum outlet oil temperature in heating mode, ºС 90

4 Outlet pressure, MPa 0,4

5 Oil heater power, kW 155

6 Maximum power consumption, kW 185

7 Vacuum chamber max. residual pressure in degassing mode,

mbar

2,7

8 Vacuum chamber max. residual pressure at air tightness, mbar 1

9 Maximum inleakage within 1 hour of vacuum tightness check,

mbar:

10

10 Electric power supply

- voltage, V 400

- three phase AC frequency, Hz 50

11 Max. overall dimensions, mm

- length 5550

- width 2100

- height 2320

12 Max. weight, kg 4675

CMM-10(UVM) PICTURES