Internal fuel main pipe for double-way fuel conveying and atomization

Abstract

The invention discloses an internal fuel main pipe for double-way fuel conveying and atomization. The internal fuel main pipe consists of a main pipe (1) and a nozzle (2); the fuel main pipe is fixedthrough a support column (3) with a ball; a main-way fuel supply pipe (5) and a secondary-way fuel supply pipe (6) are connected through a nozzle shell (4); the heat protection of the pipe is realizedthrough a cover (7) and a thermal insulation layer (8); through a bushing (9) with a thread fuel filter and a thread surface on the surface of a secondary fuel filter (10), the filtration and the stable flowing of fuel are realized; the centrifugal atomization of the fuel is realized through cyclone grooves on a cyclone (11) and a nozzle cyclone (12); and accumulated carbons on the nozzle are reduced through inclined intake holes on a gas cover (13). The fuel main pipe can meet the demands of different fuel supply characteristics of double fuel ways, has the advantages of good atomization effect, compact structure, low mass, low influence on the fuel gravity, difficult accumulation of carbons on the end surface of the nozzle and difficult influence from instable fuel flowing, and is suitable for an aero-engine and a gas turbine combustion chamber.

Description

technical field [0001] The invention belongs to the field of engines, and in particular relates to a built-in fuel main pipe for fuel delivery and atomization of dual oil channels. Background technique [0002] Since the ordinary single oil circuit fuel main pipe cannot meet the fuel supply requirements of some equipment under certain working conditions, the fuel main pipes used in some aero-engines and gas turbines are mostly external dual oil circuit fuel main pipes, but the quality of these fuel main pipes Large, the gravity effect of the fuel is greatly affected, the structure of the nozzle pipeline is complex, the end surface of the nozzle is easy to deposit carbon, and the air flow in the external channel is affected to a certain extent, and it is easily affected by the instability of the fuel flow. These have a great impact on the performance of the engine and the fuel manifold. have serious repercussions. Contents of the invention [0003] The object of the presen...

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Problems solved by technology

[0002] Since the ordinary single-oil fuel main pipe cannot meet the fuel supply requirements of some equipment under certain working conditions, the fuel main pipes used in some aero-engines and gas turbines are mostly external dual-oil fuel main pipes, but the quality of these fuel main pipes Large, the gravity effect of the fuel is greatly affected, the structure of the nozzle pipeline is complex, the end surface of the nozzle is prone to carbon deposition, the air flow in the external channel is affected to a certain extent, and it is easily affected by the instability of the fuel flow, which have great influence on the performance of the engine and the performance of the fuel manifold have serious repercussions

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