Double-resonance fluid pulsation attenuator

A technology of pulsation attenuation and double resonance, applied in the direction of pipes/pipe joints/fittings, mechanical equipment, pipe components, etc., can solve the problems of pipeline system fatigue damage, radiation noise, etc., and achieve increased effective vibration elimination bandwidth, small size, Good vibration damping effect

Active Publication Date: 2015-03-25
BEIHANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of pipeline vibration due to fluid-solid coupling is easy to cause fatigue damage and radiation noise to the pipeline system

Method used

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  • Double-resonance fluid pulsation attenuator
  • Double-resonance fluid pulsation attenuator

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Embodiment Construction

[0026] Embodiments of the present invention will be described below with reference to the drawings. Elements and features described in one drawing or one embodiment of the present invention may be combined with elements and features shown in one or more other drawings or embodiments. It should be noted that representation and description of components and processes that are not related to the present invention and known to those of ordinary skill in the art are omitted from the drawings and descriptions for the purpose of clarity.

[0027] figure 1 It is a structural schematic diagram of an embodiment of the double-resonance fluid pulsation attenuator of the present invention.

[0028] Such as figure 1 As shown, in this embodiment, the double-resonance fluid pulsation damper of the present invention includes a housing, a first piston 6 , a second piston 5 , a first compression spring 9 and a second compression spring 7 .

[0029] The housing includes a housing main body 4 w...

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Abstract

The invention provides a double-resonance fluid pulsation attenuator which comprises a shell. A piston cavity is arranged in the shell, a first piston is slidably arranged in the piston cavity, the piston cavity is divided into a first cavity and a second cavity, and a first pressure spring which can push the first piston is arranged in the second cavity; a first through hole and a second through hole are formed in the shell, the first through hole is communicated with the first cavity, and the second through hole is communicated with the second cavity. First overflow gaps are reserved between the side walls of the first piston and the piston cavity. A first groove is formed in the side, which faces the first cavity, of the first piston, a second piston and a second pressure spring are slidably arranged in the first groove, and the second pressure spring can push the second piston. Second overflow gaps are reserved between the second piston and the side walls of the first groove. A damping hole is formed in the first piston, and the first groove can be communicated with the second cavity via the damping hole. The double-resonance fluid pulsation attenuator has the advantages that the double-resonance fluid pulsation attenuator is simple in structure and is small and light, effective vibration damping frequency widths can be greatly enlarged by the double-resonance fluid pulsation attenuator in a double-resonance flow pulsation eliminating design as compared with a single-resonance vibration damper, and excellent vibration damping effects can be realized for flow pulsation in hydraulic pipelines.

Description

technical field [0001] The invention relates to the technical field of fluid mechanical devices, in particular to a double-resonance fluid pulsation attenuator. Background technique [0002] At present, most hydraulic energy systems use axial piston pumps to provide hydraulic energy, because axial piston pumps have the advantages of high output pressure, high work efficiency and high reliability. However, the axial piston pump will inevitably produce fluid pulsation due to its own structure and working principle. Due to the unavoidable liquid resistance inside the pump and in the pipeline system, the fluid pulsation will cause the pressure pulsation. The harm of pressure pulsation to the hydraulic energy pipeline system is usually manifested in the form of fluid-solid coupling vibration, that is, pressure pulsation produces pipeline vibration, and pipeline vibration in turn affects pressure pulsation. The pipeline vibration caused by fluid-solid coupling is easy to cause f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L55/04
CPCF16L55/04
Inventor 焦宗夏吕国国徐远志尚耀星
Owner BEIHANG UNIV
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