Compressor with Suction and Discharge Pulsation Bottles

This compressor, its driver and coupling have undergone a torsional natural frequency analysis of the motor-coupling-compressor drive train.   The objective of this analysis is to demonstrate acceptable margins of avoidance between mechanical and acoustic natural frequencies.  As part of that analysis a forced response vibration analysis is also conducted to evaluate torque and amplitude.

Key Benefits

• As every engineering student learns (e.g. Tacoma Narrows Bridge), that structures or components in resonance may fail
• Ensuring adequate separation in natural frequencies at operating speed (including multiples of operating speed), between mechanical, structural and piping components, prevents systems from becoming resonant
• Fact is, as precise as analysis gets, overlooking some features of the layout can cause components to start shaking. 

TTS Audit Tools

API 318 Appendix M Analysis

 

Mechanical Piping System Analysis (M4)

       Mechanical Compressor Manifold System Analysis (M5)

Compressor Manifold System Vibration and Dynamic Stress Analysis (M6)

       Piping System Dynamic Analysis (M7)

Calculation of Dynamic and Static Stresses on Pulsation Suppressor Internals (M8)

       Pulsation Suppression Device Low Cycle Fatigue Analysis (M10)

Piping System Flexibility (M11)

 

Dynamic Analysis

Confirm adequate separation between frequencies of mechanical, piping and structural systems

Audit the Design

Use a vibration checklist as a tool to walk-down the design to discover items that might "tune-up"

Detailing and Supports

Develop company standards for piping branch connections, attachments and instrument connections that are stiff, with centers of mass that are close to the frame or header.

Send mail to info@tolpatechnical.com for your advanced analysis and design needs.
Last modified: 04/14/08