Self-oscillation gas jet auxiliary atomization device

A technology of atomization device and gas jet, applied in the direction of injection device, injection device, etc., can solve problems such as increased viscosity of propellant, complex nozzle structure, high viscosity, etc., to improve combustion efficiency and specific impulse, improve atomization effect, The effect of accelerated cracking

Active Publication Date: 2016-03-30
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although the addition of metal components can improve the specific impulse and other parameters of the propellant, it greatly increases the viscosity of the propellant, and even presents the properties of a non-Newtonian fluid
This kind of complex fluid with added metal components is difficult to atomize, and the current use of complex fluid atomization in rocke...

Method used

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  • Self-oscillation gas jet auxiliary atomization device
  • Self-oscillation gas jet auxiliary atomization device
  • Self-oscillation gas jet auxiliary atomization device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A self-excited oscillating gas jet assisted atomization device: the device is provided with a connected inlet, an oscillating chamber, a feedback loop, a gas nozzle, and an independently arranged liquid nozzle; wherein the inlet is connected to the oscillating chamber, and the outlet of the oscillating chamber is connected to the The gas nozzle is provided with several feedback loops near the outlet of the vibration chamber and is connected back to the inlet of the vibration chamber; the liquid nozzle is structurally independent from the above four parts, and is used to generate a liquid jet, which is atomized under the action of the oscillating air flow.

[0023] Specifically, such as figure 1 As shown, the shape of the entrance 1 of the device is contracted toward the direction of the oscillation cavity, and the oscillation cavity 2 is a cuboid cavity that gradually widens from the entrance to the exit. Exit bump 9. Protrusions can be arranged above and below the out...

Embodiment 2

[0033] A self-excited oscillating gas jet assisted atomization device, mainly comprising a main board and a cover plate sealed and closed to the main board. The main board is specifically provided with an inlet, an oscillation chamber, a feedback loop, a gas nozzle, and a liquid nozzle as described in Embodiment 1.

[0034] like figure 2As shown, the main board 10 is provided with: the inlet 1 is connected to the oscillating chamber 2, the oscillating chamber 2 is connected to the gas nozzles 5 and 6, and there are two feedback loops 3 and 4 connected to the inlet 21 of the oscillating chamber near the outlet of the oscillating chamber; the liquid nozzle 8 is structurally independent from the above four parts.

[0035] like image 3 As shown, a gas pipe joint 11 is provided on the cover plate 20 at a position corresponding to the inlet, and a liquid pipe joint 12 is provided at a position corresponding to the liquid nozzle.

[0036] The main board and the cover board are co...

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Abstract

The invention discloses a self-oscillation gas jet auxiliary atomization device. The self-oscillation gas jet auxiliary atomization device is provided with an inlet, an oscillation cavity, feedback loops and a gas spraying opening which are communicated, and further provided with an independently arranged liquid spraying opening, wherein the inlet is communicated with the oscillation cavity; an outlet of the oscillation cavity is communicated with the gas spraying opening; the multiple feedback loops are arranged near the outlet of the oscillation cavity and connected back to an inlet of the oscillation cavity; the liquid spraying opening is near the gas spraying opening, independent from the above four parts structurally, and used for generating liquid jet flow which is atomized under the action of oscillation air flow. Breaking of liquid is accelerated through oscillation of gas medium, and the self-oscillation gas jet auxiliary atomization device is mainly used for the fields of liquid atomization, cleaning and the like. The self-oscillation gas jet auxiliary atomization device does not need any movable components, is convenient to use, and is simple and compact in structure. Through the self-oscillation gas jet auxiliary atomization device, the self-oscillation of the gas medium acts on the liquid jet flow, breaking of the liquid is accelerated, the atomization effect of complex fluid is further improved, and the combustion efficiency and the specific impulse of a liquid-propellant rocket engine are effectively improved.

Description

technical field [0001] The invention relates to the field of applying complex fluid atomization, in particular to a self-excited oscillation gas jet assisted atomization device. Background technique [0002] Oscillating jets have important applications in liquid atomization, enhanced heat transfer, cleaning, cutting and other fields. When the jet is ejected from the nozzle, the self-excited oscillation will accelerate the stabilization of the jet, thereby promoting the breakage and atomization of the jet. The self-excited oscillation of the gas jet can be realized by using the property that the fluid will change its direction of motion when it approaches the protruding solid surface—that is, the Coanda effect, and the fluid feedback loop. For enhanced heat transfer, the oscillating jet will destroy the boundary layer, increase the convective heat transfer coefficient, and enhance the heat transfer. In the field of jet cutting and cleaning, the oscillating jet improves the ...

Claims

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Application Information

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IPC IPC(8): B05B1/02
CPCB05B1/02
Inventor 富庆飞杨立军贾伯琦
Owner BEIHANG UNIV
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