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Pre-burning-grade auxiliary oil way valve used for aero-engine fuel nozzle and use method of pre-burning-grade auxiliary oil way valve

A technology for aero-engines and fuel nozzles, applied to engine components, fuel valves of turbine/propulsion devices, turbine/propulsion fuel delivery systems, etc., can solve poor atomization quality, great influence of pollutant emissions, and uneven concentration distribution and other issues to achieve the effect of ensuring accuracy, increasing safety, reliability and maintainability

Pending Publication Date: 2017-08-08
AECC COMML AIRCRAFT ENGINE CO LTD
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

Poor atomization quality, uneven concentration distribution, improper spray cone angle, etc. will directly affect the life of the combustion chamber and turbine and the emission of pollutants, especially the atomization quality of the ground gas turbine nozzle has a great impact on pollutant emissions

Method used

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  • Pre-burning-grade auxiliary oil way valve used for aero-engine fuel nozzle and use method of pre-burning-grade auxiliary oil way valve
  • Pre-burning-grade auxiliary oil way valve used for aero-engine fuel nozzle and use method of pre-burning-grade auxiliary oil way valve
  • Pre-burning-grade auxiliary oil way valve used for aero-engine fuel nozzle and use method of pre-burning-grade auxiliary oil way valve

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Embodiment Construction

[0028] The technical solution of this patent will be further described in detail below in conjunction with specific embodiments.

[0029] see Figure 1-11 , a pre-combustion level auxiliary oil circuit valve for aero-engine fuel nozzles, including a casing 1, a primary valve system 2 and a secondary valve system 3; the casing 1 includes an external standard quick connector 4, a casing 5 and a secondary oil The oil pipe 6, the primary valve system 2 and the secondary valve system 3 are all installed inside the casing 1; the external standard quick connector 4 includes a standard size external quick end 25, a cylindrical shell 26 and an inner cavity 27; the shell 5 includes Cylindrical auxiliary casing 28, stepped inner chamber 29 and auxiliary oil passage hole 30, the stepped inner chamber 29 is located inside the cylindrical auxiliary casing 28, the auxiliary oil passage hole 30 passes through one end of the cylindrical auxiliary casing 28 and the stepped inner chamber 29 con...

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Abstract

The invention discloses a pre-burning-grade auxiliary oil way valve used for an aero-engine fuel nozzle. The pre-burning-grade auxiliary oil way valve comprises a housing, a first-grade valve assembly and a second-grade valve system. The size of the adopted each grade of valve is relevant to the oil pressure range, when the oil pressure is too large, the relatively-stable oil supply amount can be controlled as well, power is not supply when the oil pressure is too small, and therefore it is ensured that fuel injected by a nozzle is constant; a purely-mechanical structure is adopted, and safety reliability and maintainability are greatly improved; and two grades of valves are adopted for simultaneous control, and fuel supply accuracy is ensured.

Description

technical field [0001] The invention relates to the technical field of fuel injection systems for aerospace engines, in particular to a pre-combustion stage auxiliary oil passage valve for fuel nozzles of aeroengines and a method for using the same. Background technique [0002] The aero engine is known as the "heart" of the aircraft, and the combustion chamber is the "heart" of the engine. Together with the compressor and the turbine, it constitutes the three core components of the aeropropulsion system. The combustion chamber is mainly composed of basic components such as air intake device, flame tube, shell, nozzle and igniter. The fuel nozzle is one of the most important components of the combustion chamber. Its function is to atomize the fuel, accelerate the formation of the mixture, ensure stable combustion and improve combustion efficiency. However, in order to ensure that the pressure and flow of the fuel oil reaching the fuel nozzle are relatively constant, a valve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02C7/232
CPCF02C7/232
Inventor 高明军刘献忠王力娜王鹏谢涛张晓明
Owner AECC COMML AIRCRAFT ENGINE CO LTD
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