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Multi-point jetting device for reinforcing atomization

An injection device, multi-point technology, applied in the fuel valve of the turbine/propulsion device, charging system, turbine/propulsion fuel delivery system, etc., can solve the problems of low fuel supply pressure, limited size, complex structure, etc. The effect of improving combustion efficiency and improving atomization ability

Inactive Publication Date: 2018-07-06
AECC SICHUAN GAS TURBINE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for the small and medium working conditions of the engine, the main oil circuit has just been opened, the oil supply pressure is low, and the combustion efficiency is slightly poor
If the multi-point injection device of the main oil circuit adopts a centrifugal nozzle, the structure is often complicated and the size is limited

Method used

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  • Multi-point jetting device for reinforcing atomization
  • Multi-point jetting device for reinforcing atomization

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Embodiment Construction

[0018] The present invention will be described in detail below in conjunction with the accompanying drawings and specific implementation examples.

[0019] refer to figure 1 , figure 2 , a multi-point injection device for enhancing atomization, the device includes a throat 1, a shell 2, a main nozzle 3, a secondary nozzle 4, and a cyclone 5. An eccentric bore 10 is arranged on the conical surface 7 of the throat 1 .

[0020] Further, it is characterized in that the number of main nozzles 3 is 6-12.

[0021] Further, it is characterized in that the eccentric holes 10 deviate from the central axis 12 of the main nozzle 3 by a certain distance, and the eccentric holes 10 are distributed along the circumferential direction of the central axis 12, and the number is 1-2.

[0022] Further, it is characterized in that the main nozzle 3 is provided with a swirl chamber 8 with a diameter of 2-3 mm, and transitions to the nozzle hole 9 along the converging cone surface 13, and the di...

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Abstract

The invention relates to a multi-point jetting device for reinforcing atomization. The multi-point jetting device comprises a throat channel (1), a shell (2), a main spout (3), an auxiliary nozzle (4)and a swirler (5); and eccentric holes (10) are formed in the conical face (7) of the throat channel (1), and an annular cavity (11) communicates with the main spout (3) through the eccentric holes (10). By utilizing forming of the eccentric holes in the conical face at an inlet of each jetting point, fuel oil enters a swirling flow chamber to generate centrifugal rotation, atomization is reinforced due to the effect of centrifugal force, the burning efficiency is improved under the medium and small working conditions of an engine, and the size of the nozzle is not increased.

Description

technical field [0001] The invention belongs to the field of aero-engines and relates to a multi-point injection device for enhancing atomization. Background technique [0002] The fuel nozzle is an important part in the main combustion chamber of an aero-engine. Its main function is to atomize the fuel, spray it into the combustion chamber and mix it with air for combustion. With the expansion of the flight envelope of aero-engines, the range of fuel flow is becoming wider and wider. Therefore, the fuel nozzles in the main combustion chamber of modern aero-engines are generally designed with dual oil circuits to meet the wide range of fuel flow. However, as the engine has higher and higher requirements for combustion chamber rise and pollution emission, it is often difficult to balance the performance of the combustion chamber under various working conditions with the current fuel supply method. In order to solve this problem, a method of partitioning oil supply is propose...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02C7/232F02C7/22
CPCF02C7/22F02C7/232
Inventor 邱伟房人麟王蓉隽邓远灏黄兵桂韬
Owner AECC SICHUAN GAS TURBINE RES INST
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