Rotors for screw compressors

Abstract

A rotor for a screw compressor, the rotor (1) comprises a rotor body (2) and a shaft (6), the shaft at least partially protrudes or passes through the rotor body (2) at the center or approximately centered axial bore or channel (5), characterized in that said shaft (6) comprises a stretching element (7) through which the rotor body (2) or at least a part thereof passes (11, 12 ) are held on the shaft (6) with respect to which the tensile elements are axially locked or can be locked and are connected to each other by the stretching elements (7), wherein the stretching elements (7) are in The rotor body (2) is pre-tensioned by a tensile load during assembly on the shaft (6) and remains axially A pre-tensioning force is applied, wherein said axial pre-tensioning force is equal to at least 30% of the yield strength of the material of the stretching element (7) in the case that the rotor (1) is not installed, and is caused by passing through the rotor body ( 2) or a part thereof is achieved by said tensile elements (11, 12) kept apart from each other.

Description

technical field [0001] The invention relates to rotors for screw compressors. Background technique [0002] As is known, screw compressors have a drive, usually in the form of a motor, and a screw compressor element with a housing within which are two meshing rotors, one of which is driven or not by a transmission The device is driven by the driver described above. [0003] Due to the meshing of the rotors, during the operation of the screw compressor, fluid (such as air) is sucked at the inlet of the screw compressor element, then the fluid is compressed between the two rotors, and finally at a certain outlet pressure is discharged on the outlet side of the compressor element. [0004] The intermeshing screw forming parts of the rotor are referred to as the rotor body. As is known, one of the rotors is in the shape of a male rotor with blades and the other is in the shape of a female rotor with grooves in which the blades of the male rotor engage in a known manner. [0...

AI Technical Summary

Problems solved by technology

This results in too large a distance between the introduced cooling channels and the outer surface of the rotor, so that effective cooling cannot be achieved

[0019] Another disadvantage is that it is difficult or even impossible to repair the rotor when only a single component (such as the journal or the rotor body) is damaged

[0020] Another disadvantage is that it is difficult to place sensors in the rotor, e.g. to measure vibration or temperature

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