Integrally geared compressors

Figure 4-38. Ten-stage, integrally-geared compressor. (Source GHH-Borsig.)...

Figure 5-6. Flow diagram and schematic of an integrally geared compressor.

Figure 7-6. An integral geared compressor driven by a motor with an open drip-proof enclosure. The enclosure also includes 85dba sound attenuation. Courtesy of Elliott Company ...

FIGURE 3.30 Blowup of a three-stage integral gear compressor. (Courtesy of Cooper Industries.)... 

In the case of nitrous acid plants, application of integrally geared process gas radial turbines and compressors are used in plants with capacities ranging from 120-600 t/day and higher. For air compression, up to three compressor stages are connected in series. To increase efficiency, the inlet temperature of the individual stages is reduced by using two external intermediate coolers. 

Figure 4-39. Integrally geared multistage compressor. (Source Demag Delaval.)...

The main power source is a 2,200 kW rated motor, which drives two high-speed pinions through integral gears. The first stage of the compressor operates at 17,900 rpm, while the second and third stages operate at 21,800 rpm. The unit is controlled by a local control system, but operators can also monitor the operating parameters from the plant control room. 

API Std 672, Packaged, Integrally Geared Centrifugal Air Compressors for Petroleum, Chemical, and Gas Industry Services, 3rd Edition, September... 

Figure 4-9. An oil-flooded, Integrally geared screw compressor package. Courted ofSullair)...

Another common type of compressor is manufactured in an integrally geared configuration. It is basically an overhung style machine mounted on a gear box and uses the gear pinion shaft extension to mount an... 

Figure 11 3. Testing of the more standard integrally geared air compressors can be somewhat complex. Courtesy of Cooper Turbocompressor)...

API Standard 672, Packaged, Integrally Geared, Centrifugal Plant and Instrument Air Compressors for General Refinery Services, Second Edition, W shington, D C. American Petroleum Institute, 1988, Reaffirmed 199 . 

Figure 12-39C. Single-stage gas compressor with integrally geared drive shaft. (Used by permission Bui. 1.10, Jan 1994. Sunstrand Compressors, Sunstrand Fluid Handling.)...

Air integral gear-type compressor with open-face impellers... 

Fig. 4.1-40. Ten-stage integrally geared radial compressor (adopted from MAN GHH BOR-SIG)...

Turbo compressors can be of the radial or the axial type. They differ from each other in the direction by which the compressed gas leaves the impeller. If the amount of process air is below about 400 000 m h , radial turbo compressors are preferably applied in two particular designs, i.e. the integrally geared turbo compressor and the single-shaft compressor with integrated cooling devices. Their development has decisively pushed the evolution of industrial air separation. The specific thermodynamic and mechanical properties of these compressors will be introduced in the following. 

High-speed units are normally separable. That is, the compressor frame and driver are separated by a coupling or gear box. This is opposed to an integral unit where power cylinders are mounted on the same frame as the compressor cylinders, and the power pistons are attached to the same drive shaft as the compressor cylinders. 

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