High Efficiency. High Volume Applications.
Axial flow compressors are designed for high volume, high efficiency, and high reliability applications. These applications include air separation, sewage treatment, wind tunnels, and CAES. Two of our primary applications are FCC air blowers and blast furnaces. The Dresser-Rand axial-flow compressor line includes six standard frame sizes that are each available with 3 to 15 stages. Pressure ratio is determined by the number of stages and flow is varied by changing the length of the blades.
We Design for Performance and ConvenienceThe Dresser-Rand axial compressors are designed to provide excellent accessibility by being horizontally split and providing the variable stator adjusting mechanism outside the casing. Rotor blade replacement can be done individually without removing the rotor from its casing. Axial Compressor Cross-Section. Intake and discharge volutes are either fabricated or cast steel and can be arranged upward or downward. The intake volute has flow taps to provide calibrated flow measurement. Stator casing located in the compressor center section between the intake and discharge volutes is a two piece design manufactured from cast steel. Stator vanes are available in three arrangements: fixed, individually adjustable, or continuously adjustable.
Fixed blading is normally used with variable speed applications.
Individually adjustable blades provide for future changes in operating characteristics or where occasional blade adjustment is desired.
Continuously variable blades with automatic control are usually supplied on constant speed applications with frequent changes or fluctuations in operating conditions.
With continuously variable stators all blades are adjusted simultaneously by a drive ring which is linked to a drive shaft that is automatically adjusted by a electro/hydraulic actuator from a 4-20 ma signal.
Bearing housings are horizontally split for easy access to all bearing parts without the need for disassembly of the volutes or casing. The bearing housing brackets are bolted and doweled to the casing for positive and permanent alignment.
Bearings, journal and thrust can be one of many choices from the traditional sleeve journal to various tilt pad designs and the original design self equalizing thrust to various self leveling, self equalizing, flooded lube or directed lube designs.
Focused on Performance Improvements
Axial compressor and associated component design is always being reviewed for improvement. Performance increases in existing units can be provided to maximize flow and efficiency. Incremental options usually exist for revamping or rerating an axial compressor.