285-61-1СМП Compressor

Centrifugal Compressor 285-61-1СМП is one of the recent REP Holding  developments. Compressor 285-61-1СМП  is designed for compression and transportation of natural gas. It is applied in assembly with gas-pumping units at booster compressor stations of the gas producing industry. 


The compressor design employs  the active magnetic bearing  system and dry gas dynamic seals. The active magnetic bearing provides rotor contactless  rotation  in  the controlled magnetic field. Absence of friction and oil elements increases the life time of the bearing parts, the unit efficiency, reduces operating costs.   REP Holding established in-house production of electric drives and magnetic bearings under  S2M (SKF) licenses.


Compressor  285-61-1СМП configuration  :

barrel type casing 

-     - six compression stages

      - volute outlet chamber

      - dry gas dynamic seals

      - active magnetic bearing

 

Compressor  285-61-1СМП technical characteristics:

Value description

UOM

Nominal mode

Second warranted  operating mode

Capacity referred to  20°С and 0.1013 MPa

MMNCMD

21.30

26.93

Capacity referred to  initial conditions

m3/min

283.0

318.0

Final gas pressure, abs., at the discharge branch pipe outlet

MPa

10.35

10.35

Pressure ratio

-

2.2

1.953

Power consumed by compressor

MW

23.75

26.70

Compressor rotor speed

rpm

4900

 

Polytropic efficiency, no less than

-

0.825

0.780

Gas density referred to  20°С and 0.1013 MPa

kg/m3

0.763

 

Compressor  285-61-1СМП main advantages:

“dry” version (dry gas dynamic seals and active magnetic bearing  system)

- twofold operational life increase

- higher efficiency due to no mechanical losses

- assemblies and parts commonality (up to 80% elements substitutability)

- universal compression casing  accommodating  replaceable flow passages with pressure ratio from  1.5 to 4.0

- reduced operational costs

- improved reliability of the design

- reduced amount of additional equipment


Centrifugal Compressor 285-61-1СМП