Gas pulsation vibration damper

Abstract

The invention discloses a gas pulsation vibration damper for a reciprocating compressor outlet pipe in pipeline transportation. The outside of the gas pulsation vibration damper is a cylindrical shell; a gas inlet is arranged near the side wall of the left end of the shell; the right end of the shell is a gas outlet; the gas inlet is provided with a transition section; the bottom of the transition section extends into the shell and is fixedly communicated with a tapered nozzle; a throttle plate is fixed on the cross section of a shell inner chamber located between the gas inlet and the gas outlet; the throttle plate is provided with a plurality of throttle through holes; a left expansion chamber is formed between the left end of the shell and the throttle plate; a right expansion chamber is formed between the throttle plate and the gas outlet; and the volume of the left expansion chamber accounts for 3 / 5 of the total volume of the whole shell inner chamber. The invention changes the sound wave propagation characteristic through the two expansion chambers and the throttle plate between the two expansion chambers to damp incident waves, thus, the sound wave strength is reduced; and the gas pulsation vibration damper has good damping effect for vibration caused by pulse gas flow. The invention has the advantages of simple structure, low cost, strong adaptability and the like.

Description

technical field [0001] The invention relates to a vibration attenuator, in particular to an airflow pulsation vibration attenuator, which is suitable for pipeline vibration caused by airflow pulsation in the outlet pipe of a reciprocating compressor in pipeline transportation. Background technique [0002] Pipeline transportation is widely used in petroleum, chemical and other industries. Reciprocating compressors are usually the power source for pipeline transportation and important mechanical equipment in oil refining and chemical plants. Pipeline vibration is one of the common faults in the outlet pipeline of reciprocating compressors. If the flow of gas in the pipeline of the reciprocating compressor is constant, the pressure, velocity and density of the specified point in the pipeline do not change with time. However, due to the intermittent nature of suction and exhaust of the reciprocating compressor, the pressure of the airflow And the velocity changes periodical...

AI Technical Summary

Problems solved by technology

[0003] In order to control the vibration of the outlet piping system of the reciprocating compressor, the internal component with the publication number CN 1755070A and the name "Pulse Airflow Vibration Elimination Device" is provided with a transition section and a nozzle, and an airflow expansion is formed between the internal component and the outer casing. However, the effect of the device on changing the shape and velocity of the pulsed airflow is poor, and the attenuation effect on the airflow pulsation is not ideal, and the purpose of reducing the exciting force of the piping system and ancillary equipment cannot be achieved.

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