Volume-choke-volume type pulsation damper capable of rapidly switching outer inserting pipe

Abstract

The invention discloses a volume-choke-volume type pulsation damper capable of rapidly switching an outer inserting pipe. The damper comprises a buffer tank and the outer inserting pipe. A switching valve is arranged in the middle of the buffer tank and divides the interior of the buffer tank into a left cavity and a right cavity, and the two cavities are communicated through the two ends of the outer inserting pipe. The bottom of the cavity on one side is provided with an air inlet, and the bottom of the cavity on the other side is provided with an air outlet. The damper has two application modes comprising the gas storage tank mode and the volume-choke-volume mode. In the gas storage tank mode, the switching valve is opened, and the damper is used as a common gas storage tank to controlgas flow pulsation. In the volume-choke-volume mode, the switching valve is closed, the outer inserting pipe type volume-choke-volume type pulsation damper is formed, gas flows through the cavity on one side, the outer inserting pipe and the cavity on the other side, and the damping effect of the damper on gas flow pulsation is improved. The two modes can be rapidly switched, and engineering application is flexible. The outer inserting pipe is arranged in an S shape and is compact in structure, the outer inserting pipe is fixed to the outer side of the buffer tank through an outer inserting pipe supporting component, so that vibration of the outer inserting pipe can be reduced, and the service life of the outer inserting pipe can be prolonged.

Description

technical field [0001] The invention relates to the technical field of air flow pulsation attenuation of compressors and pipeline systems, in particular to a tube-capacitance pulsation attenuator capable of quickly switching externally inserted tubes. Background technique [0002] The periodic suction and exhaust of the compressor will cause the airflow pulsation in the pipeline. The airflow pulsation is one of the main causes of pipeline vibration and pipeline stress damage. Therefore, the study and control of airflow pulsation is the key to improving the safety and reliability of the compressor. important link. Commonly used devices for controlling airflow pulsation include a buffer tank, which is a commonly used device for controlling airflow pulsation at present. It is equivalent to a gas spring and can reduce the pressure pulsation behind the buffer tank. Although the buffer tank can effectively attenuate the airflow pulsation of the downstream pipeline, it has several...

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Problems solved by technology

However, the existing intubation type pulsation attenuator is inconvenient to process and install, and it is difficult to adjust during use. The internal parts and the tank body need to be connected by welding parts, and the vibration of the internal parts will generate additional stress to drive the tank body to vibrate, which is not good for the strength of the tank body. Moreover, pulsation coupling is prone to affect the attenuation effect, and because the length of the inner cannula is limited by the volume of the buffer tank, the volume of the buffer tank is too large or the pulsation attenuation effect is not good in field application.

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