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Wheel-disc-type flow pulsation generator

A technology of flow pulsation and generator, which is applied in the direction of fluid pressure actuation device, fluid pressure actuation system components, mechanical equipment, etc., can solve the problem that the plunger pulsator cannot generate flow pulsation, and achieve the effect of simple structure

Inactive Publication Date: 2012-04-11
BEIHANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the limitation of the inertia of the reciprocating components, the plunger pulsator cannot generate high frequency flow pulsation

Method used

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  • Wheel-disc-type flow pulsation generator
  • Wheel-disc-type flow pulsation generator
  • Wheel-disc-type flow pulsation generator

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Embodiment Construction

[0025] Such as figure 1 , 2 As shown, a wheel-disc type flow pulsation generator with adjustable frequency and amplitude of the present invention mainly consists of a front housing 1, a rear housing 2, a sleeve 3, a front end cover 7, a rear end cover 4, a shaft 8, a wheel Disc 6 and bearing 5 are formed. image 3 The liquid flow channel 34 formed for the sleeve 3 and its components is composed of the sleeve 3 , the compression bolt 31 , the spring 32 and the sleeve sealing device 33 . Figure 4 It is the shaft 8 and its components, which are composed of the shaft 8, the fixing nut 81, the washer 82, the retaining ring 83 and the key 84. Figure 5 It is a wheel disc 6, on which several through holes 61 and 62 uniformly distributed along the circumferential direction are the wheel disc sealing surfaces.

[0026] The specific connection relationship is: the front shell 1 and the rear shell 2 are connected by bolts 21, the front shell 1 and the rear shell 2 are sealed with the...

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Abstract

The invention discloses a wheel-disc-type flow pulsation generator. The generator is characterized in that a front shell and a rear shell are connected through a bolt to form a cavity; the center holes of the front shell and the rear shell are respectively internally provided with a bearing which is provided with a shaft; each shaft is connected with a wheel disc through a key; a certain number of through holes are uniformly distributed on the wheel disc along the circumferential direction; the radial parts, corresponding to the through holes on the wheel disc, of the front shell and the rear shell are provided with sleeve mounting holes, and a sleeve sealing device, a sleeve, a spring and a compression bolt are arranged in each sleeve mounting hole; the compression bolt is used for compacting the sleeve and the sleeve sealing device through the spring, and the sleeve sealing device is closely contacted with a wheel disc surface; a motor drives the wheel disc on each shaft to rotate, the through holes on the wheel disc and a liquid flow channel in the sleeve are connected or disconnected according to a certain cycle so as to control the opening and closing of the liquid flow channel and further generate flow oscillation based on an approximation sinusoidal law; the motor speed can be adjusted through a frequency converter so as to regulate the pulsation frequency; and the flow pulsation of different amplitude values can be obtained by adjusting the valve opening before liquid enters the flow pulsation generator.

Description

technical field [0001] The invention relates to a wheel-disc flow pulsation generator, in particular to a wheel-disc flow pulsation generator with adjustable amplitude and frequency, which is mainly used in the research on the dynamic characteristics of liquid rocket engine injectors and pipelines and other fields. Background technique [0002] Liquid rocket engines often encounter the problem of unstable combustion, in which the medium and low frequency unstable combustion is often related to the flow oscillation of the propellant supply system and pipeline. In order to study the dynamic characteristics of the liquid rocket engine supply system, pipeline and injector when unstable combustion occurs, it is necessary to simulate the flow pulsation in the experiment. [0003] At present, the commonly used mechanical flow pulsation generating device is a plunger type flow pulsation generator. For example, the Chinese patent application with the application number 200810232217...

Claims

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Application Information

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IPC IPC(8): F15B21/12
Inventor 杨立军富庆飞
Owner BEIHANG UNIV
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