Pulsation air current vibration-damping arrangement

A pulsating airflow and vibration damping technology, applied in the direction of muffler, fluid flow, engine components, etc., can solve the problem of not finding a solution, and achieve a good vibration damping effect and the effect of reducing the excitation force.

Inactive Publication Date: 2006-04-05
刘友宏 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It is the best way to reduce the excitation force, that is, to reduce the vibration source. It is theoret

Method used

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  • Pulsation air current vibration-damping arrangement
  • Pulsation air current vibration-damping arrangement
  • Pulsation air current vibration-damping arrangement

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Embodiment Construction

[0015] The present invention is further described with reference to the embodiments given in the accompanying drawings: figure 1 As shown, the device of the present invention is mainly composed of an outer casing 4, an inner member and an airflow expansion space 6; the inner member is composed of a transition section 2 and a nozzle 3; the outer casing has an air outlet 5; An airflow expansion space 6 is formed; the outlet of the nozzle 3 communicates with the airflow expansion space between the inner member and the outer casing 4 .

[0016] The cross-sectional shape of the nozzle - it is composed of a straight line segment or a circular arc segment or a parabola segment or a hyperbola segment or an unfolded segment and a periodic segment consisting of a straight line segment and a circular arc segment or a parabola segment or a hyperbola segment or an unfolded segment. The space plane curve structure is extended and arranged in the circumferential direction, or along the direc...

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Abstract

The invention discloses a pulse air-flow damping device in the vibration damping and damageproof technique domain, which comprises the following parts: outer case, inside component and air-flow expansion space, wherein the inside component contains transition section and injector whose exit connects the air-flow expansion space between inside component and outer case; the cross-section shape of injector is periodic plane curve structure in space along the circle direction or quadrangle, triangle and regular polygon direction to extend arrangement, which is composed of straightway, arc segment or parabolic segment or hyperbolic segment or expansion segment; forming a closed plane curve in space; stretching the section shape along the axial direction of outer case; forming hollow channel with two end opening; the outlet of condenser sprays out through transition section and forms current direction vortex, extension vortex structure in the gas flow expansion space, which turns the pulse air-flow as stable air-flow.

Description

Technical field [0001] The invention belongs to the technical field of vibration damping and disaster prevention, and mainly relates to a pulsating airflow vibration damping device. Background technique [0002] The piping system is widely used in industrial production, especially in the petrochemical, electric power, and chemical industries. Usually, the vapor-liquid two-phase flow piping system, the pipeline with large pressure difference and the pulsating gas flow piping system will vibrate during operation, especially In the delivery piping system of reciprocating compressors. The working characteristic of the reciprocating compressor is that the suction and exhaust flow are periodic and / or intermittent, so it is inevitable to stimulate the air flow in the inlet and outlet piping of the compressor to be in a pulsating state. This phenomenon is called air pulsation. The flow parameters (such as pressure, velocity, density) of pulsating airflow change periodically with lo...

Claims

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Application Information

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IPC IPC(8): F01N1/08F15D1/00
CPCF16L55/02
Inventor 刘友宏罗志军王劲
Owner 刘友宏
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