Copeland Industrial LP

Pallavi Narkhede

Jean-Louis Picouet

Steven Fels

Abhijit Pande

Slide valve assemblies are provided that have volume slide valve members that are self-positioning, as well as compressors that include such slide-valve assemblies. The self-positioning volume slide valve member automatically slidably adjusts to control compressor volume ratio and power input to the compressor during operation of the compressor. A volume slide valve balance piston is connected to discharge gasses of the compressor and by a valve to suction gasses of the compressor. The volume slide valve balance piston exerts a balance piston pressure force on the volume slide valve member that is equal to a discharge pressure force when the valve is closed, and a balance piston pressure force that is the result of the combined pressure of the discharge gasses and suction gasses when the valve is open.

Self-positioning volume slide control for screw compressor

Slide valve assemblies are provided that have volume slide valve members that are self-positioning, as well as compressors that include such slide-valve assemblies. The self-positioning volume slide valve member automatically slidably adjusts to control compressor volume ratio and power input to the compressor during normal operation of the compressor. A positioning guide assembly includes a pinion gear and a movable rackshaft. The rackshaft engages the volume slide valve member and moves the volume slide valve member to an initial position when the rackshaft moves from a first position to a second position. Thus, the volume slide valve member may be placed in its initial position prior to normal operation of the compressor.

Self-positioning volume slide control with position feedback for screw compressor

A seal assembly configured for use with a high pressure single screw compressor includes a seal body and at least one attachment structure. The at least one attachment structure fixedly attaches the seal body to the rotor of the compressor, such that the seal body is rotatable along with the rotor. The seal body has a textured outer surface which creates a labyrinthine path between the compressor housing and the seal body.

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Pune, India

Pallavi Narkhede