Broad-frequency pressure-variable pressure pulsation attenuator

Abstract

The invention discloses a broad-frequency pressure-variable pressure pulsation attenuator which comprises a shell, end caps, elastic diaphragms and orifice plates. The two ends of the shell are used for being connected with a water inlet pipe and a water outlet pipe respectively, the side wall of the outer portion of the shell is evenly provided with multiple cavities in the axial direction and the circumferential direction, each cavity is divided into an upper cavity body and a lower cavity body through one elastic diaphragm in the corresponding cavity, the upper end of each upper cavity body compresses the corresponding elastic diaphragm through the corresponding end cap so as to seal the corresponding cavity, the upper cavity bodies serve as gas pressure cavities, the lower cavity bodies serve as energy storage cavities, and energy storage device holes are machined in the side wall of the shell so that the energy storage cavities can be communicated with the inside of the shell; the inside of the shell is axially provided with multiple round orifice plates provided with inclined through holes, the orifice plates are located between two axially adjacent energy storage device holes, and the surfaces of the orifice plates are axially perpendicular to the shell. A diaphragm device energy storage set is effectively combined with an orifice plate pulsation attenuator, so that attenuation can be carried out on pressure pulsation of different frequencies and pressures, broad-frequency pressure-variable pressure pulsation attenuation can be achieved, and the attenuator is suitable for various pressure application occasions.

Description

technical field [0001] The invention belongs to the technical field of fluid pipeline attachments, and in particular relates to a wide-band variable pressure pulsation attenuator. Background technique [0002] Various industries such as water conservancy and hydropower, fluid machinery, petroleum and natural gas transportation cannot do without fluid transportation pipelines, which are indispensable system components in fluid transmission, transmission and control. However, there are pressure pulsations in the piping system, which can cause equipment vibration and noise pollution. [0003] At present, accumulators are usually installed on pipelines to reduce pressure pulsation, and the attenuation effect of accumulators is obvious, but relevant data point out that conventional accumulators only attenuate pressure pulsations at low frequencies and under specific pressure conditions; Install one or more orifice plates at the appropriate position to attenuate the pressure puls...

AI Technical Summary

Problems solved by technology

However, there are pressure pulsations in the piping system, which can cause equipment vibration and noise pollution

[0003] At present, accumulators are usually installed on pipelines to reduce pressure pulsation, and the attenuation effect of accumulators is obvious, but relevant data point out that conventional accumulators only attenuate pressure pulsations at low frequencies and under specific pressure conditions; Install one or more orifice plates at the appropriate position to attenuate the pressure pulsation. This method is simple and easy to implement, but usually only has an obvious effect on high-frequency pulsation attenuation.

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