Large curvature small elbow cooling structure in reverse flow combustion chamber of turboshaft engine

The invention discloses a large curvature small elbow cooling structure in a reverse flow combustion chamber of a turboshaft engine. The large curvature small elbow cooling structure in the reverse flow combustion chamber of the turboshaft engine comprises an upper inlet bending section and a lower...

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Bibliographic Details
Main Authors WEI JINGTAO, YANG WEIHUA, CHEN ZHENHUA, XIANG LEI, DENG CHUANGXIN
Format Patent
LanguageChinese
English
Published 05.05.2020
Subjects
BLASTING
COMBUSTION APPARATUS
COMBUSTION PROCESSES
GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGHVELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
HEATING
LIGHTING
MECHANICAL ENGINEERING
WEAPONS
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Summary:The invention discloses a large curvature small elbow cooling structure in a reverse flow combustion chamber of a turboshaft engine. The large curvature small elbow cooling structure in the reverse flow combustion chamber of the turboshaft engine comprises an upper inlet bending section and a lower outlet bending section which are connected to the inner wall of a flame tube cavity; the upper inletbending section and the lower outlet bending section are integrally molded; the sum of the curvature radiuses of the upper inlet bending section and the lower outlet bending section is 34 mm; a plurality of air film holes are formed in the surface of a small elbow; and the air film holes are in rhombic cross row distribution. According to the large curvature small elbow cooling structure in the reverse flow combustion chamber of the turboshaft engine, cold air is reasonably distributed by improving the small elbow cooling structure, so that the overall temperature of the small elbow is reduced, and the temperature un
Bibliography:Application Number: CN201911087305