Review of methods for vibration diagnostics of screw compressor

carried out which structures all the features of diagnosing mechanisms using ISO 1816-1-97 State Standard. In the material presented practical examples of the analysis of the acceleration and vibration velocity spectrograms are given. A scheme of the possible path of the vibration signal from the source to the body of a sealed vertical screw compressor is drawn up. Fixed points of measurement of the vibration signal are indicated. The result of this material is the justification and direction of further research in the field of vibration analysis. The requirements for individual diagnostics of sealed vertical screw compressors, which includes the solution of the following issues: assessment of the technical condition of the overall level of vibration on the basis of modeling the development of damage, recognition of the technical condition of the spectral patterns with the loss of the oil layer between the screws; and taking into account the degree of attenuation of the vibration signal at the information frequencies of possible damage are formulated.