Resistance composite type pressure pulsation attenuator with length direction restraint

A pressure pulsation and composite technology, applied in the direction of fluid flow, engine components, machines/engines, etc., can solve the problems of large structural size, large pressure loss and narrow attenuation frequency band of pressure pulsation attenuators

Inactive Publication Date: 2020-01-17
中国船舶重工集团公司第七0五研究所
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Problems solved by technology

[0004] In order to solve the problems existing in the prior art, the present invention proposes an impedance composite pressure pulsation attenuator with length direction constraints, which combines the advantages of the resistive attenuator and the resistive attenuator, and has the advantages of compact structure size and low pressure loss. It has the characteristics of small size and excellent pressure pulsation attenuation effect, and has good pulsation attenuation effect in the high, medium and low frequency ranges, which solves the problems of large structure size, large pressure loss, narrow attenuation frequency band and poor attenuation effect of conventional pressure pulsation attenuators. question

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  • Resistance composite type pressure pulsation attenuator with length direction restraint
  • Resistance composite type pressure pulsation attenuator with length direction restraint

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Embodiment Construction

[0019] Pressure pulsation attenuators include resistive attenuators and resistive attenuators. Resistive attenuators use elastic materials to attenuate pressure pulsations. The resistive materials are fixed on the inner wall of the fluid channel or arranged in a certain way in the pipeline to form The elastic wall, when the pressure pulsation enters the attenuator, the resistive material will convert part of the pulsation pressure into heat energy and dissipate it, so as to achieve the purpose of attenuating the pressure pulsation, and has a good attenuation effect in the medium and high frequency range. The resistance attenuator does not directly absorb sound energy, but uses the interface that utilizes the sudden change of pressure pulsation characteristics in the pipeline to reflect part of the pulsation energy back to the pulsation source, which is suitable for eliminating middle and low frequency noise. These two pressure pulsation attenuators have their own advantages, bu...

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Abstract

The invention provides a resistance composite type pressure pulsation attenuator with length direction restraint. An attenuation cavity and a perforated pipe are included. The perforated pipe is located at the axial center position of the pulsation attenuator. A two-section circular pipe type micro perforated pipe structure is adopted in a body structure, and a baffle with a center axial through hole is arranged between the two sections of structures. The perforation rate of the perforated pipe body structure is 10%-20%. The attenuation cavity coaxially sleeves the outer portion of the perforated pipe body structure, and an elastic rubber layer is vulcanized on the inner wall face of the attenuation cavity. The resistance composite type pressure pulsation attenuator has the characteristicsthat the structure size is compact, pressure losses are few, and the pressure pulsation attenuation effect is excellent; and the resistance composite type pressure pulsation attenuator is suitable for the hydraulic field with the extremely high limiting requirements for the size space and the pulsation attenuation effect.

Description

technical field [0001] The invention relates to the technical field of attenuators, in particular to an impedance composite pressure pulsation attenuator with length direction constraints. Background technique [0002] There are two types of conventional pressure pulsation attenuators: resistive attenuator and resistive attenuator. The resistive attenuator is a kind of energy absorbing attenuator. The unique friction and damping effect converts pressure pulsation energy into heat energy to achieve the purpose of attenuating pressure pulsation. Resistive attenuators are suitable for eliminating medium and high frequency pressure pulsations, and have a wide range of anechoic frequency bands, but have poor attenuation effects on low frequency pressure pulsations. The resistance attenuator uses the reflection and interference effect of the pulsation to prevent the outward propagation of the pressure pulsation by changing the propagation characteristics of the pressure pulsation...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L55/04F15D1/00F02M37/00
CPCF02M37/0041F15D1/00F16L55/04
Inventor 白坤雪张海鹰白超孔亮
Owner 中国船舶重工集团公司第七0五研究所
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