thrust collar in centrifugal compressor

Changes in End Play. The purpose of thrust bearing end play is to provide axial clearance between the thrust collar and the thrust bearing assemblies. The end 

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recommendations on centrifugal compressor axial thrust evaluation and on the physical model . THRUST CALCULATION During operation the rotor of a centrifugal compressor is subject to an axial thrust T resulting from the sum of several components: T m due to variation of gas momentum T a due to differential pressure across the impellers T b

Thrust bearings are used to restrict axial motion. Thrust collar is hydraulically fitted with rotor so that it rotates with it.

A thrust collar ( 161 ) includes a central disk ( 162 ), a forward wing ( 163 ), and an aft wing ( 164 ). The central disk ( 162 ) is a disk shaped hollow cylinder with a central axis ( 97 ). US20140112774A1 - Centrifugal gas compressor magnetic bearing thrust collar with mounting pilots - Google Patents

Centrifugal Compressor Failure Analysis Mr. Cliff Knight, PE President and Chief Engineer Dr. Carlos R Corleto Director of Materials Lab & Field Services Introduction & Background • Compressor failure at refining facility in Gulf Coast of USA 6000 HP two stage

Fig. 4 Centrifugal compressors working principle. Firstly, the air is drawn into the center of the impeller with a radial blade. It is then pushed to the center by the centrifugal force as the impellers keep on rotating. The radial movement of the gas or air raises the pressure and generates kinetic energy.

Thrust collars The symmetry of the centrifugal design cancels out the bulk of power-rob thrust loads. Tapered thrust collars on the pinion shafts create an oil wedge which carries the small remaining net thrust to the bull gear where it is absorbed by a simple low speed thrust bearing.

The thrust bearings are of the hydrodynamic tilting pad design. Here again the thrust collar rides on a cushion of oil and there is no metal to metal contact.

Centrifugal compressor Axial thrust force Animation Backward and Forward motion when Variating Refrigerant pressure in Evaporator due to building temperature

A centrifugal compressor in ethylene plant charge gas service experienced high thrust bearing temperatures after startup from an overhaul and rerate • The pad metal temperatures reached 265°F with a 40°F spread between instrumented pads • Pad metal temperature would have been higher, but compressor speed