What is the cause of compressor pipeline vibration When the compressor is running, it will malfunction, such as pipeline vibration. This is a relatively common problem. Pipeline vibration is caused by many reasons. If you want to understand what is happening to your compressor pipeline vibration, you need to carry out a cause Check it out. The reasons for the vibration of the inlet and outlet pipelines of reciprocating compressors are more complicated, including:
First, the compressor intermittently sucks and exhausts to cause the air column to vibrate. During the operation of the reciprocating compressor, the suction and discharge are intermittent and periodic changes, which will cause the pressure of the gas to pulsate. When the pulsating fluid is transported along the pipeline, it will encounter elbows, reducers, valves, etc. After the component, due to the change of instantaneous pressure, speed and density, the excitation force will change with time, and the pipeline will be subjected to a large impact force. If there is a lack of a fixed fulcrum at the elbow or the fulcrum is not strong enough, violent vibration will occur. In general, pressure pulsation is the main cause of vibration in the outlet pipeline of reciprocating compressors. 2. The unbalanced power of the shrinking machine causes the machine to vibrate with its connected pipes. The unit itself has problems such as poor dynamic balance performance, improper installation, improper foundation and support, etc., which can cause vibration of the unit. Due to the transmission of vibration, the vibration of the body will cause the vibration of the pipeline, so the vibration of the body is strong, and the vibration of the pipeline is also strong. III. Resonance generated when the frequency of machine excitation is close to or equal to the natural frequency of the pipeline, including air column resonance and pipeline mechanical resonance. When the frequency of the cylinder excitation force on the airflow in the pipeline is close to or equal to the natural frequency of the air column in the pipeline, the air column resonance will occur, which will cause strong vibration of the pipeline and become larger with the amplitude of the pressure pulsation, resulting in The damage of the gas valve and even the vibration of the entire unit and pipeline are intensified. The pipeline system composed of pipelines, pipeline accessories, containers and brackets, etc., is excited by the excitation force to produce a mechanical vibration response, which is commonly known as pipeline vibration. When the frequency of the excitation force is close to or equal to the natural frequency of the pipeline system, mechanical resonance will occur, and the mechanical vibration amplitude will be maximum at this time. When the excitation frequency, the natural frequency of the air column, and the natural frequency of the pipeline system are similar or equal, the most serious pipeline vibration will occur. In short, resonance will cause greater displacement and stress in the pipeline.
