Failure of industrial pipelines due to low-frequency vibrations

Resumo

A nonstationary gas flow in the piping of a compressor station at the entrance to a gas pipeline has been considered. Factors that affect the emergence and development of gas flow pulsations that result in hazardous low-frequency pipeline vibrations have been studied. A mathematical model of the process is described. The system of acoustic-approximation equations is used that makes it possible to allow for the tree-type topology of pipeline network in the booster part of a compressor station, with 90-deg pipe turns, the presence of obstacles in the form of shut-off and control valves, and pipeline pitch being disregarded.