Manufacturer: OJSC Kazankompressormash

Designed to compress atmospheric air used in various industries for pneumatic equipment, pneumatic tools and technological processes.

Cleaning the flow path and connector surfaces 

The rotor can be repaired in the following scope: 

1. Cleaning the rotor from deposits 

2. Flaw detection of the rotor by VIC, PVC, MPD methods 

3. Replacement of defective parts: sealing ridges; gear bushings; thrust disc; axial relay disk; impeller; shaft 

4. Grinding necks, thrust disc 

5. Replacement of bearings, filing on breadcrumbs and alignment of babbitt filling. With rotor positioning in the flow path along the housing bores

During long-term operation of the compressor, misalignment of the embedded parts of the compressor may occur (due to warpage of the housing, wear of the centering pins, etc.). Misalignment leads to unevenness of the gap between the rotor and the embedded parts, it is not uncommon for them to touch. This defect leads to a decrease in compressor performance.

Replacement of gas (air) seals is carried out in order to ensure the drawing values of the clearances in the seals to bring the compressor capacity to the formulated values.

Replacement of oil seals is carried out in order to maintain the drawing values of the clearances in the seals to prevent oil leaks.

1. Cleaning the connector surfaces 

2. Replacement of bearings, filing on the outer diameter, sizing of the babbitt layer, with setting the center distance, skew and intersection of the axes of the gear pair 

3. Grinding of necks, thrust disc of the gear pair 

4. Balancing the gear pair

1. Replacing bearings 

2. Replacing the oil seals 

3. Aligning the rotor in the stator magnetic field 

4. Balancing the rotor of the electric motor

Compressor unit alignment, reducer-compressor, reducer-electric motor

1. Mechanical cleaning of the tube bundle 

2. Chemical cleaning of the tube bundle 

3. Pressure testing of the heat exchanger

Productivity m³ / s (m³ / min)  2,67 (160)
Initial pressure  m³ / s (m³ / min)  0,098 (1)
Final pressure  m³ / s (m³ / min)  0,88 (9)
Initial temperature  К (°С) 293 (20
Final temperature  К (°С) 323 (50)
Power consumption  kW  928
Rotation frequency of I-II stages s-(rpm) 324,2 (19455)
Rotation frequency of III-IV stages   (20) s-(rpm) 418,1 (25086)
Electric motor    4АРМ-1000/6000УХЛ4
Drive power kW  1000
Rotational speed  s-(rpm) 49.65 (2979)
Voltage 6000
Overall dimensions  mm    4000х2300х2050
Weight kg  12000

The compressor is a compact monoblock unit with an overdrive gear and gas coolers built into the compressor housing.

Compressor casing, electric motor, lubrication unit, oil and water supply systems are mounted on a common frame, which is also an oil tank.

The compressor is assembled from two modules, each of which consists of a rotor resting on two journal bearings, with two impellers mounted on it, and parts forming the flow path of the stages (blade diffusers, volutes, suction chambers, gas coolers, moisture separators).

The module casing is cast iron, with an internal air bypass from stage to stage within the module, and from module to module with an external bypass.  The rotors are made of high alloy steel.  The impellers are fitted back-to-back, which balances the axial forces from gas-dynamic overloads.

The lubrication system is circulating, forced with free drainage of oil into the tank.  Lubricating oil TP-22s.

Photo gallery of performed works