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a straight jet nozzle

A technology of nozzles and oil injection holes, applied in the field of direct injection nozzles, which can solve the problems of small spray angle, poor atomization effect, and simplicity, and achieve the effects of improving performance, increasing spray angle, and improving atomization effect

Active Publication Date: 2021-03-26
AECC SHENYANG ENGINE RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the simple structure of the direct spray nozzle in the prior art, the atomization effect is poor, and the atomization performance does not meet the requirements of use. Generally speaking, it is obviously inferior to the air atomization nozzle, and the spray angle is small (usually 15 to 20 °), the key performance of the direct injection nozzle affects the combustion performance of the combustor to a certain extent

Method used

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Embodiment Construction

[0017] In order to make the purpose, technical solution and advantages of the application more clear, the technical solution in the embodiment of the application will be described in more detail below in conjunction with the drawings in the embodiment of the application.

[0018] This application mainly aims at the problems of small spray cone angle and poor atomization effect of the direct injection nozzle used in the compact structure of the afterburner, multi-point injection combustion chamber and ram combustion chamber, and proposes a new direct injection nozzle. It can effectively improve the shortcomings of traditional direct injection nozzles and effectively improve the performance of the combustion chamber.

[0019] The present application is the same as the traditional direct injection nozzle, but still adopts pressure atomization, and the liquid fuel is sprayed out at a certain angle after being sprayed out through the oil injection hole 3, and is interacted with air ...

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Abstract

The invention discloses a direct-jetting nozzle. The direct-jetting nozzle comprises a nozzle body and a flow guiding pillar, and an oil jetting hole is formed in the inner part of the nozzle body; and the flow guiding pillar is arranged in the nozzle body and stretches into the oil jetting hole, an axis of the flow guiding pillar and an axis of the oil jetting hole are coincident, wherein a diameter ratio value range of the flow guiding pillar and the oil jetting hole is 0.6-0.9. According to the direct-jetting nozzle, the compact space structure of the direct-jetting nozzle is retained, thearranged flow guiding pillar takes full advantage of a principle of oil film atomization, so that the atomization effect of the direct-jetting nozzle is improved, and meanwhile the atomizing angles are enlarged obviously; and the atomization and the combustion of fuel oil are facilitated greatly, and the combustion chamber performance can be improved obviously.

Description

technical field [0001] The application belongs to the field of aero-engines, in particular to a direct injection nozzle. Background technique [0002] The nozzle is one of the most important components in the combustion equipment. The function of the nozzle is to atomize the liquid fuel and form a liquid mist with a small diameter to increase the contact area between the liquid fuel and the surrounding medium to achieve rapid evaporation, mixing and combustion. Purpose. Since nozzles are generally used for the combustion of liquid fuels, the design of the nozzles has a great influence on the combustion of liquid fuels. [0003] Commonly used nozzle types include direct jet nozzles, centrifugal nozzles, rotating cup nozzles, pneumatic atomizing nozzles and special nozzles, among which straight jet nozzles and centrifugal nozzles are called pressure atomizing nozzles. [0004] In the main combustion chamber nozzle in the field of aero-engine, the aerodynamic atomizing nozzle...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23R3/28
CPCF23R3/28
Inventor 郭帅帆扈鹏飞芮长胜
Owner AECC SHENYANG ENGINE RES INST
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